Textile fabric comprising EMF absorbing materials and its use for ...

Author: GE

Aug. 18, 2025

Textile fabric comprising EMF absorbing materials and its use for ...

EPA1 - Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation - Google Patents

Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation Download PDF

Info

Publication number: EPA1
Authority: EP; European Patent Office
Prior art keywords: emf; fibers; radiation; use according; mhz
Prior art date: -07-18
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EPA

Other languages

German (de)

French (fr)

Inventor

Lutz Henning Prof. Dr. Block

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

MONDOBIOTECH SA

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

-07-18

Filing date

-07-18

Publication date

-01-23

-07-18 Application filed by Individual filed Critical Individual

-07-18 Priority to EPA priority Critical patent/EPA1/en

-07-11 Priority to PCT/EP/ priority patent/WOA1/en

-07-11 Priority to AUA priority patent/AUA1/en

-01-23 Publication of EPA1 publication Critical patent/EPA1/en

Status Withdrawn legal-status Critical Current

Classifications

- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/16—Screening or neutralising undesirable influences from or using, atmospheric or terrestrial radiation or fields

Definitions

the invention relates to textile fabrics in general, but in particular to clothing of any kind that contain materials that are electromagnetic Fields (EMF) can dampen, and their use to shield high-frequency radiation (HF radiation).
EMF electromagnetic Fields
HF radiation high-frequency radiation
Such fabrics are therefore excellent suitable for radiation emitted by radio or microwaves Devices and devices, in particular cell phones, cell phones or others Radio systems, and their base stations, shield.
Radio and microwaves belong to high-frequency electromagnetic radiation (HF radiation). While radio waves have a frequency between 0.5 MHz and approximately 150 MHz (e.g. VHF: 88-108 MHz), the frequency range of microwaves extends from approximately 300 MHz to 300 GHz and thus encompasses numerous fields of application currently used, in particular in communications engineering. In the lower range of this frequency band (300 to approx. 890 MHz) television broadcasts (UHF range) are broadcast; radar devices work in a frequency range of approx.
C-Band 400 - 600 MHz
radiotelephony devices such as CB radio ("walkie-talkies") or Polzeifunk generally work in the frequency ranges of the radio waves, namely between approximately 20 and 80 MHz.
microwave radiation in particular in the area between 400 and MHz increase significantly in everyday life.
Mobile phones or radio communication devices of the type mentioned differ in this respect of most other HF generating devices of everyday life that they or must be worn or used in the immediate vicinity of the body and the duration of exposure to radiation, particularly on the head and chest area is sometimes considerable.
RF fields are generally emitted by the antenna of the transmitter.
the electrical and magnetic fields can vary depending on the frequency with the corresponding fields of electrically charged particles in the human body interact. However, electrical charges occur also in certain molecules / ions and, for example, on cell walls. Nerve stimuli are based on changes in electrical potential at the Synapses and the human brain itself generates measurable electric fields. All such charges or fields can possibly be connected to the outer, fields generated by RF radiation resonate and biological changes cause.
the invention thus relates to the use of fabrics based on Textile fibers and at least one component, which consists of an electromagnetic Fields (EMF) of damping material are used to shield radio frequency (RF) radiation from wireless cell phones and radiotelephones is emitted.
EMF electromagnetic Fields
RF radio frequency
that radiation is also here including which of the base stations or repeater units is broadcast, even if this is usually only in the immediate vicinity of the Transmission equipment / transmission towers should pose a danger.
RF radiation in the sense of the invention includes electromagnetic radiation in the Radio wave range between 20 and 100 MHz, preferably between 20 and 50 MHz, in particular between 20 and 35 MHz, and microwave radiation between 400 and MHz.
the latter preferably comprises the frequency bands from 400 to 650 MHz, 850 to MHz, to MHz and to MHz. These include the ranges 880 to 960 MHz, to MHz and to MHz of particular interest.
the invention thus relates in particular to the use for Shielding of microwave radiation in the range from 400 to MHz (mobile radio) and for shielding from radio radiation in the range from 20 to 50 MHz (Voice / CB radio).
the fabrics according to the invention essentially consist of conventional ones Textile fibers and at least one other material component, which electromagnetic Fields from high-frequency radiation of the frequencies mentioned is generated, can shield completely or partially.
This tissue has a damping factor of 2 to , depending on the composition 5 to 500, especially 5 to 100. Sometimes there are Damping factors from 2 to 15 are sufficient, which is only a small proportion (less than 3%) of the EMF shielding material.
damping factor in the sense of the invention, in order to the electrical or magnetic field strength (and indirectly related to it standing sizes, see above) by reducing the material properties can be.
a damping factor of, for example, 5 means that e.g. B. the field strength of a certain initial value (undamped) when passing through is reduced to a fifth by the material according to the invention.
the Damping factor can also be set to a power loss specified in decibels (dB) can be converted. The power damping is ten times higher the decimal logarithm of the damping factor.
a performance dampening of 30db corresponds to an attenuation factor of approximately .
the invention thus relates to the use of corresponding fabrics, which are characterized by being an EMF-damping material have a damping factor of the fabric between 2 and , especially between 5 and 100 effects.
metals according to the invention preference is given above all to noble metals, that is to say those which have a positive value of the normal potential ⁇ 0 (V) (in acidic solution); these are in particular copper, silver, platinum or gold.
base metals negative ⁇ 0
iron and nickel can be mentioned.
alloys of the noble metals mentioned, but also alloys of noble metals with base metals are particularly suitable, for example Ag / Cu, Ag / Au, Au / Cu, Cu / Ni, Cu / Fe, Ag / Ni , Cu / Pt-, Fe / Pt-, Cu / Ag / Au-.
Cu / Fe / Ni alloys preference is given above all to noble metals, that is to say those which have a positive value of the normal potential ⁇ 0 (V) (in acidic solution); these are in particular copper, silver, platinum or gold.
base metals negative ⁇ 0
iron and nickel can be mentioned.
semiconductor materials are to be understood as substances that get their conductivity from existing defects in their crystal structure. These are, for example, materials that are silicon, germanium, boron or selenium contain. Also non - conductive materials, which are caused by the incorporation of dopants Achieve electrical conductivity are included according to the invention. Such materials and their production are well known and in the literature described in numerous.
Polymer materials in the sense of the invention are polymeric substances that are electrical Show conductivity or absorption of electromagnetic fields. In the Typically, these are polymers that have an increased number of hydrophilic groups exhibit. Examples of suitable substances are polyaniline, polypyrrole, polyacetylene, Poly (para) phenylene or poly (ortho) toluides, optionally also can be endowed. About other substances and their physical, in particular Electromagnetic properties are described in detail in "Microvave Properties of Conductive Polymers "(Handbook of Organic Conductive Molecules and Polymers, Vol. 3, , John Wiley & Sons).
a preferred subject of the invention is the use of corresponding Fabrics that contain metal as an EMF shielding material wherein the metal is copper, silver, gold, platinum or an alloy of these metals with each other or an alloy of these metals with other metals, preferably Is nickel and / or iron.
the EMF-damping materials can be applied or applied to the fabric in different ways.
One possibility is to provide the material in the form of fibers, which are woven with the conventional fabric fibers during the manufacture of the fabric.
the fibers themselves can be made entirely of the material in question, that is to say metal fibers, semiconductor material fibers or polymer fibers.
the material can also be in the form of particles, for example sheets, spheres or lattice structures. These particles can then be introduced directly on or between the conventional fabric fibers.
the particles can also be initially taken up in suitable carrier materials, for example conventional polymers, preferably suitable for textiles, during their production.
carrier polymers loaded with the said particles can either be drawn into their own fibers, which are processed with the conventional fabric fibers, but they can also serve as coating material for the conventional fabric fibers.
the conventional fabric fibers can also be coated directly, ie without using an additional carrier material.
the respective coating (for example by vapor deposition or spraying) is carried out according to common techniques known in the textile industry, it being possible for the individual fibers as well as the finished fabric to be coated.
the EMF-damping material is preferably in the form of fibers which are woven together with the conventional fabric fibers in the manufacture of the fabric.
the diameter of these fibers is 10 to 100 ⁇ m, preferably 10 up to 50 ⁇ m, in particular 15 to 35 ⁇ m. Ensure these diameters not only a sufficient reflection of the incident electromagnetic Field, but also good machining and comfortable properties of the fabric.
the proportion of the EMF shielding material in the total fabric depends on the desired damping factor to be achieved. This in turn is dependent on the energy (frequency) of the emitted radiation. Surprisingly it was found that an attenuation factor of 20 (10dB) to (30dB) with a radiation between 400 and MHz already with a portion of the EMF-shielding material of 5 to 15%, preferably 8 to 12%, reached (15% here means: 15 out of 100 fibers consist of or contain the EMF shielding material). A damping factor between 2 and 15, preferably between 4 and 10, may already have an appropriate proportion of 1 to 5% can be achieved. The proportions here relate to proportions of fibers of the EMF - shielding material to the total fibers of the fabric.
fabric is understood that includes all types of textiles in the broadest sense.
all natural fibers are suitable, especially wool, cotton, linen or silk, or mixtures of these fibers.
the natural fibers can be easily with the EMF - shielding fibers, or the latter can be processed without bring more into this. With a share of up to 15%, especially between 1 and 5% preserve the fabric both visually and haptically original quality and are therefore generally applicable.
the tissue can but also if there are special requirements for water repellency or crease resistance be made entirely or partially based on conventional textile polymer fibers, such as. Polyester, polyacrylic, polyethylene, etc. can be constructed.
the textile fabrics can according to the invention to garments, for. B. in Form of shirts, blouses, jackets, coats, head scarves and headgear processed of any kind. But there is also the possibility To use inserts from the fabric according to the invention, for example in Bags, e.g. B. breast and jacket pockets, in which the operational very often Cell is kept or carried. Here the insert is appropriate between the mobile and the body. Protection at Phoning, i.e. in the head or ear area can be done by using suitable Headgear or headbands can be made.
an alternating electromagnetic field becomes a certain frequency, which is a frequency of a mobile or a Corresponding radio device, by means of an RF signal generator and RF amplifier generated.
the generator and one with a field strength meter provided probe is the respective EMF shielding tissue arranged in such a way that the tissue immediately on or above the probe is appropriate.
a field strength of 10 V / m is generated as the initial value. This corresponds approximately to the field strength, which is in the immediate vicinity (3 - 5 cm)
Antenna of a conventional cell (400- MHz) occurs.
the damping is given in dB. See above for conversion to damping factors.
Example 1 The arrangement described in Example 1 is used to attenuate the excitation frequency at 900 MHz for a cotton / linen fabric (75/25) which contains a polymer fiber (65 ⁇ m) which contains copper flakes (approx. 20 ⁇ m) (Polmer / Kupfer 65 / 35 w / w). The proportion of polymer fibers is 20% (80 natural fibers and 20 polymer-copper fibers). Damping factors between 8 and 20 are obtained.

Landscapes

Health & Medical Sciences (AREA)
Engineering & Computer Science (AREA)
Biomedical Technology (AREA)
Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
Radiology & Medical Imaging (AREA)
Life Sciences & Earth Sciences (AREA)
Animal Behavior & Ethology (AREA)
General Health & Medical Sciences (AREA)
Public Health (AREA)
Veterinary Medicine (AREA)
Professional, Industrial, Or Sporting Protective Garments (AREA)
Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The invention relates to textile fabrics in general, but in particular to garments of any type, which contain materials which are capable of attenuating electromagnetic fields (EMF), and to their use for shielding high-frequency radiation (HF radiation). Fabrics of this type are consequently outstandingly suitable for attenuating or shielding radiation which emanates from equipment and devices emitting radio waves or microwaves, in particular mobile phones, hand-held phones or other radio- systems, and their base stations.

Description

Die Erfindung betrifft Textilgewebe im allgemeinen, insbesondere aber Kleidungstücke jeglicher Art, welche Materialien enthalten, die elektromagnetische Felder (EMF) zu dämpfen vermögen, und ihre Verwendung zur Abschirmung von hochfrequenter Strahlung (HF-Strahlung). Derartige Gewebe sind somit hervorragend geeignet, Strahlung, welche von Radio- oder Mikrowellen emittierenden Geräten und Einrichtungen, insbesondere Mobiltelefone, Handys oder anderen Sprechfunksystemen, und ihren Basisstationen ausgeht, abzuschwächen bzw. abzuschirmen.The invention relates to textile fabrics in general, but in particular to clothing of any kind that contain materials that are electromagnetic Fields (EMF) can dampen, and their use to shield high-frequency radiation (HF radiation). Such fabrics are therefore excellent suitable for radiation emitted by radio or microwaves Devices and devices, in particular cell phones, cell phones or others Radio systems, and their base stations, shield.

If you are looking for more details, kindly visit texcraf.

Radio- und Mikrowellen gehören zur hochfrequenten elektromagnetischen Strahlung (HF-Strahlung). Während Radiowellen eine Frequenz zwischen 0,5 MHz und etwa 150 MHz (z. B. UKW: 88 - 108 MHz) aufweisen, erstreckt sich der Frequenzbereich von Mikrowellen von etwa 300 MHz bis 300 GHz und umfaßt somit zahlreiche zur Zeit genutzte Anwendungsgebiete, insbesondere in der Nachrichtentechnik. Im unteren Bereich dieses Frequenzbandes (300 bis ca. 890 MHz werden Fernsehsendungen (UHF-Bereich) ausgestrahlt; Radargeräte arbeiten in einem Frequenzbereich von etwa 1 - 50 GHz, während Mikrowellengeräte für den Haushalt Strahlung in der Regel zwischen 2 - 4 GHz erzeugen. Neben dem sogenannten "C-Band" (400 - 600 MHz) benutzen moderne Mobilfunkgeräte zur Zeit vor allem Frequenzen in drei unterschiedlichen Bändern: 890 - 960 MHz, etwa - MHz und etwa - MHz. Eine neue Generation von mobilen drahtlosen Telefonen wird bei einer Frequenz von über MHz senden.
Sprechfunkeinrichtungen, wie CB-Funk ("Walkie-Talkies") oder Polzeifunk arbeiten in der Regel in Frequenzbereichen der Radiowellen, nämlich zwischen etwa 20 und 80 MHz.Radio and microwaves belong to high-frequency electromagnetic radiation (HF radiation). While radio waves have a frequency between 0.5 MHz and approximately 150 MHz (e.g. VHF: 88-108 MHz), the frequency range of microwaves extends from approximately 300 MHz to 300 GHz and thus encompasses numerous fields of application currently used, in particular in communications engineering. In the lower range of this frequency band (300 to approx. 890 MHz) television broadcasts (UHF range) are broadcast; radar devices work in a frequency range of approx. 1 - 50 GHz, while microwave devices for the household generally generate radiation between 2 - 4 GHz The so-called "C-Band" (400 - 600 MHz) currently use modern mobile devices mainly frequencies in three different bands: 890 - 960 MHz, about - MHz and about - MHz, a new generation of mobile wireless telephones will transmit at a frequency above MHz.
Radiotelephony devices such as CB radio ("walkie-talkies") or Polzeifunk generally work in the frequency ranges of the radio waves, namely between approximately 20 and 80 MHz.

Während früher schwere und unhandliche Geräte vorwiegend im militärischen und nicht-öffentlichen Bereichen (Polizei, Zoll, etc.) nur einem kleinen Personenkreis zugänglich war, fanden in den letzten Jahren immer kleinere, leichtere und preiswertere Mobiltelefone ("Handys") bei einem immer größer werdenden Publikum für den privaten und geschäftlichen Einsatz großen Anklang, zumal der Ausbau flächendeckender Netze - eine Grundvoraussetzung für die Kommerzialisierung dieser Technologie - kontinuierlich vorangetrieben wurde. Zur Zeit sind weltweit etwa 400 Millionen solcher Geräte im Einsatz, und ihre Zahl wird sich in drei bis vier Jahren etwa verdoppeln.While in the past heavy and unwieldy devices were mainly used in the military and non-public areas (police, customs, etc.) only a small group of people has become increasingly smaller, lighter and more accessible in recent years cheaper mobile phones ("cell phones") with an ever increasing audience great appeal for private and business use, especially the expansion nationwide networks - a basic requirement for commercialization this technology - has been continuously advanced. Are currently Around 400 million such devices are in use worldwide, and their number will increase in about double three to four years.

Somit wird auch die Mikrowellenstrahlung, insbesondere in dem Bereich zwischen 400 und MHz im alltäglichen Leben erheblich zunehmen. Mobiltelefone bzw. Sprechfunkeinrichtungen der genannten Art unterscheiden sich insofern von den meisten anderen HF erzeugenden Geräten des Alltags, dass sie am oder in unmittelbarer Nähe des Körpers getragen bzw. verwendet werden müssen und die Dauer der Strahleneinwirkung auf insbesondere Kopf- und Brustbereich zum Teil erheblich ist. Die Frage, ob durch die zunehmende HF-Strahlung, die Gesundheit gefährdet ist, wird in letzter Zeit verstärkt diskutiert.Thus, the microwave radiation, in particular in the area between 400 and MHz increase significantly in everyday life. Mobile phones or radio communication devices of the type mentioned differ in this respect of most other HF generating devices of everyday life that they or must be worn or used in the immediate vicinity of the body and the duration of exposure to radiation, particularly on the head and chest area is sometimes considerable. The question of whether due to the increasing RF radiation, health is at risk, there has been increasing discussion recently.

HF - Felder werden im allgemeinen von der Antenne des Sendeteils ausgestrahlt. Die elektrischen und magnetischen Felder können in Abhängigkeit von der Frequenz mit den entsprechenden Feldern von elektrisch geladenen Teilchen im menschlichen Körper in Wechselwirkung treten. Elektrische Ladungen treten aber auch in bestimmten Molekülen / lonen sowie beispielsweise an Zellwänden auf. Nervenreize basieren auf Änderungen von elektrischen Potentialen an den Synapsen und das menschliche Gehirn erzeugt selbst messbare elektrische Felder. All solche Ladungen oder Felder können unter Umständen mit den äußeren, durch HF-Strahlung erzeugten Feldern in Resonanz treten und biologische Veränderungen bewirken.RF fields are generally emitted by the antenna of the transmitter. The electrical and magnetic fields can vary depending on the frequency with the corresponding fields of electrically charged particles in the human body interact. However, electrical charges occur also in certain molecules / ions and, for example, on cell walls. Nerve stimuli are based on changes in electrical potential at the Synapses and the human brain itself generates measurable electric fields. All such charges or fields can possibly be connected to the outer, fields generated by RF radiation resonate and biological changes cause.

Wie tief die HF - Strahlung in biologisches Gewebe eindringt, hängt von der Sendefrequenz ab. Bei den heute gängigen Mobilfrequenzen von ungefähr 890/960 bzw. / MHz beträgt die Eindringtiefe in den menschlichen Körper mehre Zentimeter (im C-Band darüber), bei den höher frequenten Systemen der neuen Generation ( - und - , UMTS) liegt sie entsprechend geringer. Bei hochfrequenten Systemen (über 10 GHz), wie Radareinrichtungen, kann eine Eindringtiefe von lediglich 1 mm und darunter festgestellt werden. Zu beachten ist jedoch, dass erwiesenermaßen beim Telefonieren auch die der Antenne gegenüberliegende Kopfseite exponiert wird, und meßbare Strahlung aus dem Kopf wieder austritt.How deep the RF radiation penetrates into biological tissue depends on the Frequency. With today's common mobile frequencies of approximately 890/960 or / MHz is the depth of penetration into the human body several centimeters (in the C band above), for the higher-frequency systems it suits the new generation ( - and - , UMTS) lower. In high-frequency systems (over 10 GHz), such as radar devices, a penetration depth of only 1 mm and below can be determined. It should be noted, however, that it has been proven that even when making calls the head opposite the antenna is exposed, and measurable radiation emerges from the head.

Mikrowellenstrahlung im Funksendebereich (Fernsehen, Mobiltelefone) erzeugen in biologischem Gewebe vor allem eine mehr oder weniger ausgeprägte Wärmeentwicklung. Diese Wärmeentwicklung kann auch bei intensiver Einwirkung physisch wahrgenommen werden. Da die Wärmeentwicklung maximal nur zu einer lokalen Temperaturerhöhung von etwa 1°C führt, sollte ihr ein ernsthafter pathologischer Effekt jedoch abzusprechen sein.Generate microwave radiation in the radio transmission range (television, mobile phones) in biological tissue above all a more or less pronounced heat development. This heat development can also occur with intensive exposure be perceived physically. Since the heat development only goes up a local temperature increase of about 1 ° C, you should be serious pathological effect must be discussed.

Seit geraumer Zeit werden jedoch auch HF - Strahlungseffekte diskutiert, welche auf nicht-thermischen Ursachen beruhen sollen. Tatsächlich wird verbreitet von zum Teil unspezifischen gesundheitlichen Irritationen, wie Kopfschmerzen, Gedächtnisschwäche, Müdigkeit, motorische Störungen, Schwindel, Herzrhythmusstörungen und Unwohlsein berichtet, die mit der exzessiven Benutzung von Mobiltelefonen in Verbindung gebracht werden.For some time now, however, RF radiation effects have been discussed, which should be based on non-thermal causes. It is actually spread by some non-specific health irritations, such as headaches, memory loss, Fatigue, motor disorders, dizziness, irregular heartbeat and reported malaise associated with excessive use of cell phones be associated.

Teilweise widersprüchliche Untersuchungen an Tieren, welche einer permanenten erhöhten Mikrowellenstrahlung in einer gewöhnlichen Mobiltelefonen üblichen Intensität ausgesetzt wurden, berichten von einer Erhöhung von Enzymaktivitäten, Bluthochdruck, Zunahme der Gehirnstromtätigkeit, Veränderungen der Permeabilität der Blut-Gehirn Schranke, Veränderung der REM - Phase, der Hormonproduktion sowie Auslösung von Alzheimer-Symptomen und sogar Initiierung von Tumorwachstum. Obwohl die Energie von Mikrowellenstrahlung nicht ausreichen dürfte, um Atome zu ionisieren oder chemische Bindungen von Molekülen zu spalten, wurde Befunde publiziert, nach denen eine Zunahme an DNA - Kettenverkürzungen unter Einwirkung von HF - Strahlung bei Ratten festgestellt wurde.Sometimes contradictory studies on animals, which are permanent increased microwave radiation usual in an ordinary mobile Have been exposed to an increase in enzyme activity, Hypertension, increased brain activity, changes in permeability the blood-brain barrier, change in the REM phase, hormone production as well as triggering Alzheimer's symptoms and even initiation of tumor growth. Although the energy from microwave radiation is insufficient likely to ionize atoms or chemical bonds of molecules to split, results were published, according to which an increase in DNA chain shortening found under the influence of HF radiation in rats has been.

Für all diese Untersuchungen gibt es zur Zeit noch keine oder keine allgemein anerkannte Rationale, insbesondere weil die durch HF-Strahlung vorrangig im Mikrowellenbereich biologisch aufgenommene Strahlenleistung nach gegenwärtigem Verständnis zu gering erscheint, um die genannten prognostizierten zum Teil erheblichen Wirkungen zu erklären. Die aufgenommene Strahlenleistung (Spezifische Absorptionsrate SAR, W / kg) kann aber trotz verhältnismäßiger geringer Ausgangsleistung des Senders vor allem bei längerer Benutzung oder längerem Tragen der mobilen Telekommunikationseinheit im eingeschalteten Zustand beträchtlich sein (Dauerbelastung). Die SAR berücksichtigt nämlich nicht nur den Betrag der übertragenen HF - Energie, sondern auch in welcher Zeit diese Energie auf eine bestimmte Masse biologischen Gewebes übertragen wird. Die SAR und ihre Verteilung im Körper ist von vielen Faktoren abhängig. Neben der Frequenz spielen räumliche und zeitliche Veränderungen des Feldes eine Rolle. Daneben sind elektrische Eigenschaften und Strukturen des biologischen Gewebes, welche eigene elektromagnetischen Felder in ihnen generieren, die mit dem externen Sendefeld in Resonanz treten können, von Bedeutung. So nimmt zum Beispiel Knochengewebe die Energie anders auf als gut durchblutetes Muskelgewebe. Auch können individuell unterschiedliche Physiologien zu unterschiedlichen Ladungszuständen und damit Wechselwirkungen und Veränderungen in bestimmten Körperbereichen und Zellen führen. Der Einfluß und das Zusammenwirken elektrischer bzw. elektromagnetischer lokaler Mini- und Mikrofelder auf biologische oder pathologische Veränderungen ist bislang nicht ausreichend untersucht worden. Erschwerend kommt hinzu, dass die SAR meßtechnisch nicht einfach zu erfassen ist. Aus diesem Grund wird in der Praxis oft mit abgeleiteten Feldgrößen, wie der Leistungsflußdichte (W/m2) oder der elektrischen, bzw. magnetischen Feldstärke ( V / m bzw. A / m) gearbeitet, wodurch zuweilen nicht vergleichbare Versuchsanordnungen und Ergebnisse resultieren. So entspricht einer SAR von 1 - 4 W/ kg, dies ist etwa der Durchschnittswert der Strahlungsaufnahme im Körper eines Erwachsenen bei Benutzung eines Mobiltelefons (950 MHz), ca. 20 bis 40 V / m.There is currently no or no generally recognized rationale for all of these investigations, especially because the radiation power that is primarily biologically absorbed by HF radiation in the microwave range appears to be too low to understand the predicted effects, some of which are considerable, according to current understanding. The absorbed radiation power (specific absorption rate SAR, W / kg) can be considerable despite the relatively low output power of the transmitter, especially when the mobile telecommunication unit is in use for a longer period of time or when it is switched on (continuous load). The SAR takes into account not only the amount of transmitted RF energy, but also the time in which this energy is transferred to a specific mass of biological tissue. SAR and its distribution in the body depend on many factors. In addition to the frequency, spatial and temporal changes in the field also play a role. In addition, electrical properties and structures of the biological tissue, which generate their own electromagnetic fields in them, which can resonate with the external transmission field, are important. For example, bone tissue absorbs energy differently than well-supplied muscle tissue. Individually different physiologies can also lead to different charge states and thus interactions and changes in certain areas of the body and cells. The influence and interaction of electrical or electromagnetic local mini and micro fields on biological or pathological changes has not been sufficiently investigated. To make matters worse, the SAR is not easy to measure. For this reason, derived field sizes such as the power flux density (W / m 2 ) or the electrical or magnetic field strength (V / m or A / m) are often used in practice, which sometimes results in comparable test arrangements and results. A SAR of 1 - 4 W / kg corresponds to this, which is approximately the average value of the radiation absorption in the body of an adult when using a mobile (950 MHz), approx. 20 to 40 V / m.

Unabhängig von der teilweise kontroversen und wissenschaftlich nicht einheitlichen Lage erscheint es notwendig, bei der Benutzung von Mobiltelefonen oder anderen Sprechfunkeinheiten, welche im HF-Bereich in der Regel in unmittelbarer Körpernähe senden, Vorsichtsmaßnahmen zu ergreifen, um sowohl nachweislich auftretende jedoch oft unspezifische subjektive Symptome als auch eventuell durch HF - Strahlung ausgelöste Krankheiten zu vermeiden. Aufgabe dieser Erfindung war es somit, einen hinreichenden Schutz für Personen, welche betriebsbereite mobile Telefone in unmittelbarer Nähe zu ihrem Körper tragen oder benutzen, bereit zustellen. Hierbei ergibt sich das Problem, dass der naheliegende Schutz, die Geräte selbst durch die hierfür üblichen und bekannten Maßnahmen abzuschirmen, nicht oder ungenügend realisierbar ist, da hierdurch die Sende- und Empfangsleistung unterbunden oder stark beeinträchtigt wird. Damit kann der Schutz nur am oder beim Benutzer des mobilen Telefons vorgenommen werden.Regardless of the sometimes controversial and scientifically non-uniform Location seems necessary when using cell phones or other radio units, which are usually in the HF range in the immediate vicinity Send close to the body, take precautions to both demonstrably however often occurring non-specific subjective symptoms as well avoid diseases caused by HF radiation. The object of this invention was therefore to provide adequate protection for persons which operational mobile phones are in close proximity to your body carry or use, ready to deliver. The problem here is that the obvious protection, the devices themselves through the usual and known for this Shielding measures is not or insufficiently feasible because this prevents or severely impairs the transmission and reception performance becomes. This means that the protection can only be on or by the user of the mobile be made.

Gegenstand der Erfindung ist somit die Verwendung von Geweben auf Basis von Textilfasern und mindestens einer Komponente, welche aus einem elektromagnetische Felder (EMF) dämpfenden Material besteht, zur Abschirmung von hochfrequenter (HF) Strahlung, die von drahtlosen Mobiltelefonen und Sprechfunkeinrichtungen emittiert wird. Erfindungsgemäß ist hierbei auch jene Strahlung mit eingeschlossen, welche von den Basisstationen oder Verstärkereinheiten ausgestrahlt wird, auch wenn diese in der Regel nur in unmittelbarer Nähe der Sendeeinrichtungen / Sendemasten eine Gefahr darstellen sollte.The invention thus relates to the use of fabrics based on Textile fibers and at least one component, which consists of an electromagnetic Fields (EMF) of damping material are used to shield radio frequency (RF) radiation from wireless cell phones and radiotelephones is emitted. According to the invention, that radiation is also here including which of the base stations or repeater units is broadcast, even if this is usually only in the immediate vicinity of the Transmission equipment / transmission towers should pose a danger.

HF-Strahlung im Sinne der Erfindung umfaßt elektromagnetische Strahlung im Radiowellenbereich zwischen 20 und 100 MHz, vorzugsweise zwischen 20 und 50 MHz, insbesondere zwischen 20 und 35 MHz, sowie Mikrowellenstrahlung zwischen 400 und MHz. Letztere umfaßt vorzugsweise die Frequenzbänder von 400 bis 650 MHz, 850 bis MHz, bis MHz und bis MHz. Hierunter sind wiederum die Bereiche 880 bis 960 MHz, bis MHz sowie bis MHz von besonderem Interesse.RF radiation in the sense of the invention includes electromagnetic radiation in the Radio wave range between 20 and 100 MHz, preferably between 20 and 50 MHz, in particular between 20 and 35 MHz, and microwave radiation between 400 and MHz. The latter preferably comprises the frequency bands from 400 to 650 MHz, 850 to MHz, to MHz and to MHz. These include the ranges 880 to 960 MHz, to MHz and to MHz of particular interest.

Gegenstand der Erfindung ist somit insbesondere die besagte Verwendung zur Abschirmung von Mikrowellenstrahlung im Bereich von 400 bis MHz (Mobilfunk) und zur Abschirmung von Radiostrahlung in Bereich von 20 bis 50 MHz (Sprech- / CB- Funk). The invention thus relates in particular to the use for Shielding of microwave radiation in the range from 400 to MHz (mobile radio) and for shielding from radio radiation in the range from 20 to 50 MHz (Voice / CB radio).

Die erfindungsgemäßen Gewebe bestehen im wesentlichen aus herkömmlichen Textilfasern und mindestens einer weiteren Materialkomponente, welche elektromagnetische Felder, die von hochfrequenter Strahlung der genannten Frequenzen erzeugt wird, ganz oder teilweise abzuschirmen vermag. Dieses Gewebe weist je nach Zusammensetzung einen Dämpfungsfaktor von 2 bis , vorzugsweise 5 bis 500 auf, insbesondere 5 bis 100. Zuweilen sind auch schon Dämpfungsfaktoren von 2 bis 15 ausreichend, was einen nur geringen Anteil (unter 3%) des EMF - abschirmenden Materials erforderlich macht.The fabrics according to the invention essentially consist of conventional ones Textile fibers and at least one other material component, which electromagnetic Fields from high-frequency radiation of the frequencies mentioned is generated, can shield completely or partially. This tissue has a damping factor of 2 to , depending on the composition 5 to 500, especially 5 to 100. Sometimes there are Damping factors from 2 to 15 are sufficient, which is only a small proportion (less than 3%) of the EMF shielding material.

Als Dämpfungsfakor im Sinne der Erfindung wird jener Faktor bezeichnet, um den die elektrische oder magnetische Feldstärke (und die damit indirekt in Verbindung stehenden Größen, siehe oben) durch die Materialeigenschaften reduzieren werden kann. Ein Dämpfungsfakor von beispielsweise 5 besagt, dass z. B. die Feldstärke eines bestimmten Ausgangswertes (ungedämpft) bei Durchtritt durch das erfindungsgemäße Material auf ein Fünftel herabgesetzt wird. Der Dämpfungsfaktor kann auch auf eine in Dezibel (dB) angegebene Leistungsdämpfung umgerechnet werden. Die Leistungsdämpfung ist hierbei das Zehnfache des dekadischen Logarithmus des Dämpfungsfaktors. Eine Leistungsdämpfung von beispielsweise 30db entspricht einen Dämpfungsfaktor von etwa .That factor is referred to as damping factor in the sense of the invention, in order to the electrical or magnetic field strength (and indirectly related to it standing sizes, see above) by reducing the material properties can be. A damping factor of, for example, 5 means that e.g. B. the field strength of a certain initial value (undamped) when passing through is reduced to a fifth by the material according to the invention. The Damping factor can also be set to a power loss specified in decibels (dB) can be converted. The power damping is ten times higher the decimal logarithm of the damping factor. A performance dampening of 30db, for example, corresponds to an attenuation factor of approximately .

Gegenstand der Erfindung ist somit die Verwendung von entsprechenden Geweben, welche dadurch gekennzeichnet sind, dass sie ein EMF - dämpfendes Material aufweisen, welches einen Dämpfungsfakor des Gewebes zwischen 2 und , insbesondere zwischen 5 und 100 bewirkt.The invention thus relates to the use of corresponding fabrics, which are characterized by being an EMF-damping material have a damping factor of the fabric between 2 and , especially between 5 and 100 effects.

Als EMF-dämpfende Materialien eignen sich Metalle, Halbleitermaterialien oder entsprechende polymere Stoffe.Metals, semiconductor materials or are suitable as EMF-damping materials corresponding polymeric substances.

Als erfindungsgemäße Metalle sind im Prinzip alle gängigen bekannten Metalle zu nennen. Bevorzugt sind jedoch vor allem edle Metalle, also solche, die einen positiven Wert des Normalpotentials ε0 (V) (in saurer Lösung) aufweisen; dies sind insbesondere Kupfer, Silber, Platin oder Gold. Von den weniger bevorzugten, aber prinzipiell geeigneten unedlen Metallen (negatives ε0) sind Eisen und Nickel zu nennen. Erfindungsgemäß sind auch Legierungen der genannten edlen Metalle aber auch Legierungen von edlen Metallen mit unedlen Metallen bestens geeignet, so beispielsweise Ag/Cu-, Ag/Au, Au/Cu-, Cu/Ni-, Cu/Fe-, Ag/Ni-, Cu/Pt-, Fe/Pt-, Cu/Ag/Au-. Cu/Fe/Ni- Legierungen.In principle, all common known metals can be mentioned as metals according to the invention. However, preference is given above all to noble metals, that is to say those which have a positive value of the normal potential ε 0 (V) (in acidic solution); these are in particular copper, silver, platinum or gold. Of the less preferred but in principle suitable base metals (negative ε 0 ), iron and nickel can be mentioned. According to the invention, alloys of the noble metals mentioned, but also alloys of noble metals with base metals, are particularly suitable, for example Ag / Cu, Ag / Au, Au / Cu, Cu / Ni, Cu / Fe, Ag / Ni , Cu / Pt-, Fe / Pt-, Cu / Ag / Au-. Cu / Fe / Ni alloys.

Als Halbleitermaterialien im Sinne der Erfindung sind solche Stoffe zu verstehen, die ihre Leitfähigkeit durch vorhandene Störstellen in ihrer Kristallstruktur erhalten. Dies sind beispielsweise Materialien, die Silicium, Germanium, Bor oder Selen enthalten. Auch nicht - leitfähige Materialien, welche durch Einbau von Dotierstoffen elektrische Leitfähigkeit erlangen, sind erfindungsgemäß mit umfaßt. Solche Materialien und ihre Herstellung sind hinlänglich bekannt und in der Literatur zahlreich beschrieben.For the purposes of the invention, semiconductor materials are to be understood as substances that get their conductivity from existing defects in their crystal structure. These are, for example, materials that are silicon, germanium, boron or selenium contain. Also non - conductive materials, which are caused by the incorporation of dopants Achieve electrical conductivity are included according to the invention. Such materials and their production are well known and in the literature described in numerous.

Als Polymermaterialien im Sinne der Erfindung gelten polymere Stoffe, die elektrische Leitfähigkeit oder Absorption elektromagnetischer Felder zeigen. In der Regel sind dies Polymere, die eine erhöhte Anzahl von hydrophilen Gruppen aufweisen. Beispiele für geeignete Stoffe sind Polyanilin, Polypyrrol, Polyacetylen, Poly(para)phenylen oder Poly(ortho)toluiden, die gegebenenfalls ebenfalls dotiert sein können. Über weitere Stoffe und ihre physikalischen, insbesondere elekromagnetischen Eigenschaften wird ausführlich bei "Microvave Properties of Conductive Polymers" (Handbook of Organic Conductive Molecules and Polymers, Vol. 3, , John Wiley & Sons) berichtet.Polymer materials in the sense of the invention are polymeric substances that are electrical Show conductivity or absorption of electromagnetic fields. In the Typically, these are polymers that have an increased number of hydrophilic groups exhibit. Examples of suitable substances are polyaniline, polypyrrole, polyacetylene, Poly (para) phenylene or poly (ortho) toluides, optionally also can be endowed. About other substances and their physical, in particular Electromagnetic properties are described in detail in "Microvave Properties of Conductive Polymers "(Handbook of Organic Conductive Molecules and Polymers, Vol. 3, , John Wiley & Sons).

Bevorzugter Gegenstand der Erfindung ist jedoch eine Verwendung von entsprechenden Geweben, welche als EMF - abschirmendes Material Metall enthalten, worin das Metall Kupfer, Silber, Gold, Platin oder eine Legierung dieser Metalle untereinander oder eine Legierung dieser Metalle mit anderen Metallen, vorzugsweise Nickel und / oder Eisen ist.A preferred subject of the invention, however, is the use of corresponding Fabrics that contain metal as an EMF shielding material wherein the metal is copper, silver, gold, platinum or an alloy of these metals with each other or an alloy of these metals with other metals, preferably Is nickel and / or iron.

Die EMF - dämpfenden Materialien können auf unterschiedliche Weise in das Gewebe ein- oder aufgebracht werden.
Eine Möglichkeit besteht darin, das Material in Form von Fasern bereitzustellen, die beim Herstellen des Gewebes mit den herkömmlichen Gewebefasern verwoben werden. Die Fasern selbst können hierbei vollständig aus dem betreffenden Material sein, also Metallfasern, Halbleitermaterial-Fasern oder Polymerfasern. Das Material kann aber auch in Form von Partikeln, beispielsweise Blättchen, Kügelchen oder Gitternetzstrukturen vorliegen. Diese Partikel können dann direkt auf oder zwischen die herkömmlichen Gewebefasern eingebracht werden. Die Partikel können aber auch zunächst in geeigneten Trägermaterialien, beispielsweise herkömmliche, vorzugsweise für Textilien geeignete Polymere bei deren Herstellung aufgenommen werden. Diese mit den besagten Partikeln beladenen Trägerpolymere können entweder zu eigenen Fasern gezogen werden, die mit den herkömmlichen Gewebefasern verarbeitet werden, sie können aber auch als Beschichtungsmaterial für die herkömmlichen Gewebefasern dienen. Letztlich können die herkömmlichen Gewebefasern aber auch unmittelbar, d.h. ohne Verwendung eines zusätzlichen Trägermaterials beschichtet werden. Die jeweilige Beschichtung (z.B. durch Bedampfen oder Besprühen) erfolgt dabei nach gängigen in der Textilindustrie bekannten Techniken, wobei die Beschichtung der einzelnen Fasern wie auch des fertigen Gewebes erfolgen kann.
Vorzugsweise liegt das EMF - dämpfende Material in Form von Fasern vor, welche mit den herkömmlichen Gewebefasern bei der Herstellung des Gewebes miteinander verwoben werden.The EMF-damping materials can be applied or applied to the fabric in different ways.
One possibility is to provide the material in the form of fibers, which are woven with the conventional fabric fibers during the manufacture of the fabric. The fibers themselves can be made entirely of the material in question, that is to say metal fibers, semiconductor material fibers or polymer fibers. However, the material can also be in the form of particles, for example sheets, spheres or lattice structures. These particles can then be introduced directly on or between the conventional fabric fibers. However, the particles can also be initially taken up in suitable carrier materials, for example conventional polymers, preferably suitable for textiles, during their production. These carrier polymers loaded with the said particles can either be drawn into their own fibers, which are processed with the conventional fabric fibers, but they can also serve as coating material for the conventional fabric fibers. Ultimately, however, the conventional fabric fibers can also be coated directly, ie without using an additional carrier material. The respective coating (for example by vapor deposition or spraying) is carried out according to common techniques known in the textile industry, it being possible for the individual fibers as well as the finished fabric to be coated.
The EMF-damping material is preferably in the form of fibers which are woven together with the conventional fabric fibers in the manufacture of the fabric.

Liegt das EMF - dämpfende Material in Form von Fasern vor oder in Partikeln, welche in zu Fasern gezogenen Trägermaterialien eingebettet sind, sollte der Durchmesser dieser Fasern erfindungsgemäß 10 bis 100 µm, vorzugsweise 10 bis 50 µm, insbesondere 15 bis 35 µm betragen. Diese Durchmesser gewährleisten nicht nur eine ausreichende Reflektion des einstrahlenden elektromagnetischen Feldes, sondern auch eine gute Bearbeitung und komfortable Eigenschaften des Gewebes.If the EMF - damping material is in the form of fibers or in particles, which are embedded in carrier materials drawn into fibers should the According to the invention, the diameter of these fibers is 10 to 100 μm, preferably 10 up to 50 µm, in particular 15 to 35 µm. Ensure these diameters not only a sufficient reflection of the incident electromagnetic Field, but also good machining and comfortable properties of the fabric.

Der Anteil des EMF - abschirmenden Materials am Gesamtgewebe hängt von dem gewünschten zu erzielenden Dämpfungsfaktor ab. Dieser wiederum ist abhängig von der Energie (Frequenz) der emittierten Strahlung. Überraschenderweise wurde gefunden, dass ein Dämpfungsfakor von 20 (10dB) bis (30dB) bei einer Strahlung zwischen 400 und MHz bereits bei einem Anteil des EMF - abschirmende Material von 5 bis 15 %, vorzugsweise 8 bis 12%, erreicht werden kann (15% bedeuten hier: 15 von 100 Fasern bestehen aus oder enthalten das EMF - abschirmende Material). Ein Dämpfungsfaktor zwischen 2 und 15, vorzugsweise zwischen 4 und 10, kann bereits mit einem entsprechenden Anteil von 1 bis 5% erzielt werden. Die Anteile beziehen sich hier auf Anteile Fasern des EMF - abschirmenden Materials zu den Gesamtfasern des Gewebes. Auch bei Einsatz von Partikeln in welcher Form auch immer, sind bei den genannten Gehalten (1 - 15% bezogen auf das Gewebe, hier w/w) vergleichbare Dämpfungsfaktoren zu erzielen. Strahlung mit höheren Frequenzen (Energie) wird durch die erfindungsgemäßen Materialien stärker gedämpft als durch Strahlung beispielsweise im Radio- oder niederen Mikrowellenbereich.The proportion of the EMF shielding material in the total fabric depends on the desired damping factor to be achieved. This in turn is dependent on the energy (frequency) of the emitted radiation. Surprisingly it was found that an attenuation factor of 20 (10dB) to (30dB) with a radiation between 400 and MHz already with a portion of the EMF-shielding material of 5 to 15%, preferably 8 to 12%, reached (15% here means: 15 out of 100 fibers consist of or contain the EMF shielding material). A damping factor between 2 and 15, preferably between 4 and 10, may already have an appropriate proportion of 1 to 5% can be achieved. The proportions here relate to proportions of fibers of the EMF - shielding material to the total fibers of the fabric. Also when using particles in whatever form, are in the mentioned Contained (1 - 15% based on the fabric, here w / w) comparable damping factors to achieve. Radiation with higher frequencies (energy) damped more by the materials according to the invention than by radiation for example in the radio or low microwave range.

Als herkömmliches Gewebe im Sinne der Erfindung wird Gewebe verstanden, dass alle Arten von Textilien im weitesten Sinne mit einschließt. Vorzugsweise eignen sich alle Naturfasern, insbesondere Wolle, Baumwolle, Leinen oder Seide, bzw. Gemische aus diesen Fasern. Die Natur fasern lassen sich problemlos mit den EMF - abschirmenden Fasern verarbeiten, bzw. letztere lassen sich ohne weiteres in diese einbringen. Mit einem Anteil von bis zu 15%, insbesondere zwischen 1 und 5% bewahren die Gewebe sowohl optisch als auch haptisch ihre ursprüngliche Qualität und sind somit generell einsetzbar. Das Gewebe kann aber auch, falls besondere Anfordernisse an Wasserabweisung oder Knitterfestigkeit gestellt werden, ganz oder teilweise auf Basis herkömmlicher textiler Polymerfasern, wie z.B. Polyester, Polyacryl, Polyethylen etc., aufgebaut sein.As conventional fabric in the sense of the invention, fabric is understood that includes all types of textiles in the broadest sense. Preferably all natural fibers are suitable, especially wool, cotton, linen or silk, or mixtures of these fibers. The natural fibers can be easily with the EMF - shielding fibers, or the latter can be processed without bring more into this. With a share of up to 15%, especially between 1 and 5% preserve the fabric both visually and haptically original quality and are therefore generally applicable. The tissue can but also if there are special requirements for water repellency or crease resistance be made entirely or partially based on conventional textile polymer fibers, such as. Polyester, polyacrylic, polyethylene, etc. can be constructed.

Die textilen Gewebe können erfindungsgemäß zu Kleidungsstücken, z. B. in Form von Hemden, Blusen, Jacken, Mänteln, Hals- und Kopftüchern und Kopfbedeckungen jeglicher Art verarbeitet sein. Es besteht aber auch die Möglichkeit Einlagen aus dem erfindungsgemäßen Gewebe einzusetzen, beispielsweise in Taschen, z. B. Brust- und Jackentaschen, in denen sehr oft das betriebsbereite Handy aufbewahrt bzw. getragen wird. Hier wird die Einlage zweckmäßigerweise zwischen dem Mobiltelefon und dem Körper angebracht. Auch der Schutz beim Telefonieren, also im Kopf-, bzw. Ohrbereich kann durch Verwendung von geeigneten Kopfbedeckungen oder Stirnbändern hergestellt werden. The textile fabrics can according to the invention to garments, for. B. in Form of shirts, blouses, jackets, coats, head scarves and headgear processed of any kind. But there is also the possibility To use inserts from the fabric according to the invention, for example in Bags, e.g. B. breast and jacket pockets, in which the operational very often Cell is kept or carried. Here the insert is appropriate between the mobile and the body. Protection at Phoning, i.e. in the head or ear area can be done by using suitable Headgear or headbands can be made.

Beispiel 1:Example 1:

Die Dämpfung der elektromagnetischen Feldstärke durch ein erfindungsgemäßes Gewebe wird gemessen. Hierbei wird ein elekromagnetisches Wechselfeld einer bestimmten Frequenz, die einer Frequenz eines Mobiltelefons oder einer Sprechfunkeinrichtung entspricht, mittels eines HF-Signalgenerators und eines HF-Verstärkers erzeugt. Zwischen dem Generator und einer mit einem Feldstärkemeßgerät versehenen Sonde ist das jeweilige EMF - abschirmende Gewebe angeordnet, und zwar so, dass das Gewebe unmittelbar an oder über der Sonde angebracht ist. Als Ausgangswert wird eine Feldstärke von 10 V/m generiert. Dies entspricht etwa der Feldstärke, die in unmittelbarer Nähe (3 - 5 cm) der Antenne eines üblichen Mobiltelefons (400 - Mhz) auftritt. Die Dämpfung wird in dB angegeben. Zur Umrechnung in Dämpfungsfaktoren siehe oben.The damping of the electromagnetic field strength by an inventive Tissue is measured. Here, an alternating electromagnetic field becomes a certain frequency, which is a frequency of a mobile or a Corresponding radio device, by means of an RF signal generator and RF amplifier generated. Between the generator and one with a field strength meter provided probe is the respective EMF shielding tissue arranged in such a way that the tissue immediately on or above the probe is appropriate. A field strength of 10 V / m is generated as the initial value. This corresponds approximately to the field strength, which is in the immediate vicinity (3 - 5 cm) Antenna of a conventional cell (400- MHz) occurs. The damping is given in dB. See above for conversion to damping factors.

Beispiel 2:Example 2:

Die in Beispiel 1 beschriebene Anordnung wird benutzt, um die Dämpfung bei 900 MHz Erregerfrequenz für ein Baumwollgewebe, das eine Metallfaser zu 4% (96 Baumwollfasern, 4 Metallfasern) enthält. Die Metallfaser (30 µm) ist eine Kupfer / Silber - Legierung (75/25 w/w).

Gewebe in unmittelbarer Nähe (1 - 3 cm) der Meßsonde:

Dämpfung bei horizontaler Ausrichtung der Antenne: 15 (dB)

Dämpfung bei vertikaler Ausrichtung der Antenne: 5 (dB).

Gewebe in 10 - 15 cm der Meßsonde:

Dämpfung bei horizontaler Ausrichtung der Antenne: 8 (dB)

Dämpfung bei vertikaler Ausrichtung der Antenne: 1 (dB).

The arrangement described in Example 1 is used to attenuate at 900 MHz excitation frequency for a cotton fabric containing 4% metal fiber (96 cotton fibers, 4 metal fibers). The metal fiber (30 µm) is a copper / silver alloy (75/25 w / w).

Tissue in the immediate vicinity (1 - 3 cm) of the measuring probe:

Attenuation with horizontal alignment of the antenna: 15 (dB)

Attenuation with vertical alignment of the antenna: 5 (dB).

Tissue in 10 - 15 cm of the measuring probe:

Attenuation with horizontal alignment of the antenna: 8 (dB)

Attenuation with vertical alignment of the antenna: 1 (dB).

Beispiel 3:Example 3:

Wie Beispiel 2, jedoch MHz Erregerfrequenz.

Gewebe in unmittelbarer Nähe (1 - 3 cm) der Meßsonde:

Dämpfung bei horizontaler Ausrichtung der Antenne: 20 (dB)

Dämpfung bei vertikaler Ausrichtung der Antenne: 26 (dB).

Gewebe in 10 - 15 cm der Meßsonde:
Dämpfung bei horizontaler Ausrichtung der Antenne: 9,5 (dB).

As example 2, but MHz excitation frequency.

Tissue in the immediate vicinity (1 - 3 cm) of the measuring probe:

Attenuation with horizontal alignment of the antenna: 20 (dB)

Attenuation with vertical alignment of the antenna: 26 (dB).

Tissue in 10 - 15 cm of the measuring probe:
Attenuation with horizontal alignment of the antenna: 9.5 (dB).

Beispiel 4:Example 4:

Die in Beispiel 1 beschriebene Anordnung wird benutzt, um die Dämpfung bei 900 MHz Erregerfrequenz für ein Baumwoll-/Leinengewebe (75/25), das eine Polymerfaser (65 µm), welche Kupferblättchen (ca. 20 µm) enthält (Polmer / Kupfer 65 / 35 w/w), aufweist. Der Anteil der Polymerfaser beträgt 20% (80 Naturfasern und 20 Polymer-Kupfer - Fasern).
Man erhält Dämpfungsfaktoren zwischen 8 und 20.The arrangement described in Example 1 is used to attenuate the excitation frequency at 900 MHz for a cotton / linen fabric (75/25) which contains a polymer fiber (65 µm) which contains copper flakes (approx. 20 µm) (Polmer / Kupfer 65 / 35 w / w). The proportion of polymer fibers is 20% (80 natural fibers and 20 polymer-copper fibers).
Damping factors between 8 and 20 are obtained.

Claims (12)

Verwendung von Geweben auf Basis von Textilfasern und mindestens einer Komponente, welche aus einem elektromagnetische Felder (EMF) dämpfenden Material besteht, zur Abschirmung von hochfrequenter (HF) Strahlung, die von drahtlosen Mobiltelefonen und Sprechfunkeinrichtungen einschließlich ihrer Basisstationen emittiert wird.Use of fabrics based on textile fibers and at least one Component resulting from an electromagnetic field (EMF) damping material is used to shield high-frequency (HF) Radiation from wireless cell phones and radiotelephony including their base stations is emitted. Verwendung nach Anspruch 1 zur Abschirmung von Mikrowellenstrahlung im Bereich von 400 bis MHz (Mobilfunk).Use according to claim 1 for shielding microwave radiation in the range of 400 to MHz (mobile radio). Verwendung nach Anspruch 1 zur Abschirmung von Radiostrahlung in Bereich von 20 bis 50 MHz (Sprech- / CB- Funk).Use according to claim 1 for shielding radio radiation in the area from 20 to 50 MHz (voice / CB radio). Verwendung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das EMF - dämpfende Material einen Dämpfungsfakor zwischen 2 und bewirkt.Use according to one of claims 1 to 3, characterized in that that the EMF - damping material has a damping factor between 2 and causes. Verwendung nach Anspruch 4, dadurch gekennzeichnet, dass das EMF-dämpfende Material einen Dämpfungsfakor zwischen 5 und 100 bewirkt.Use according to claim 4, characterized in that the EMF-damping Material causes a damping factor between 5 and 100. Verwendung nach einem der Anspruch 4, dadurch gekennzeichnet, dass das EMF - dämpfende Material ausgewählt ist aus mindestens einem Metall und / oder einem Halbleitermaterial und / oder einem Polymerstoff.Use according to one of claim 4, characterized in that the EMF damping material is selected from at least one Metal and / or a semiconductor material and / or a polymer material. Verwendung nach Anspruch 6, dadurch gekennzeichnet, dass das EMF - dämpfende Material ein Metall ist.Use according to claim 6, characterized in that the EMF - damping material is a metal. Verwendung nach Anspruch 7, dadurch gekennzeichnet, dass das Metall Kupfer, Silber, Gold, Platin oder eine Legierung dieser Metalle untereinander oder eine Legierung dieser Metalle mit anderen Metallen ist. Use according to claim 7, characterized in that the metal Copper, silver, gold, platinum or an alloy of these metals with each other or is an alloy of these metals with other metals. Verwendung nach Anspruch 4, dadurch gekennzeichnet, dass das EMF - dämpfende Material in Form von Fasern, welche mit den Textilfasern verwoben sind, oder in Form von gesonderten Partikeln oder Strukturen, welche in das Textilgewebe eingebracht sind, vorliegt, oder dass die Textilfasern mit besagtem EMF - dämpfende Material beschichtet sind.Use according to claim 4, characterized in that the EMF - cushioning material in the form of fibers, which are woven with the textile fibers are, or in the form of separate particles or structures, which are introduced into the textile fabric, or that the textile fibers are coated with said EMF-damping material. Verwendung nach Anspruch 9, dadurch gekennzeichnet, dass das EMF - dämpfende Material in Form von Fasern vorliegt.Use according to claim 9, characterized in that the EMF - damping material is in the form of fibers. Verwendung nach Anspruch 10, dadurch gekennzeichnet, dass die Fasern einen Durchmesser von 10 - 100 µm aufweisen.Use according to claim 10, characterized in that the fibers have a diameter of 10 - 100 µm. Verwendung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass als Textilfasern Baumwolle, Wolle, Leinen, Seide oder Mischgewebe dieser Fasern eingesetzt werden, wobei Anteile von Kunstfasern enthalten sein können.Use according to one of the preceding claims, characterized in that that as textile fibers cotton, wool, linen, silk or Blended fabrics of these fibers are used, with proportions of synthetic fibers can be included. EPA -07-18 -07-18 Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation Withdrawn EPA1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title EPA EPA1 (en) -07-18 -07-18 Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation PCT/EP/ WOA1 (en) -07-18 -07-11 Textile fabrics with emf-attenuating materials AUA AUA1 (en) -07-18 -07-11 Textile fabrics with emf-attenuating materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title EPA EPA1 (en) -07-18 -07-18 Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation

Publications (1)

Publication Number Publication Date EPA1 true EPA1 (en) -01-23

Family

ID=

Family Applications (1)

Application Number Title Priority Date Filing Date EPA Withdrawn EPA1 (en) -07-18 -07-18 Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation

Country Status (3)

Country Link EP (1) EPA1 (en) AU (1) AUA1 (en) WO (1) WOA1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party Publication number Priority date Publication date Assignee Title DEA1 (en) * -07-29 -03-23 Dräger Safety AG & Co. KGaA Method and device for radio transmission of signals generated close to the body EPA4 (en) * -07-06 -08-10 First Data Corp Secure rfid packaging FRA1 (en) * -02-01 -08-02 Pascal Duthilleul MULTILAYER ENVELOPE DEVICE FOR ATTENUATING ELECTROMAGNETIC WAVES.

Families Citing this family (3)

* Cited by examiner, † Cited by third party Publication number Priority date Publication date Assignee Title ROB1 (en) * -02-01 -11-29 Tomescu Angelica-Ecaterina-Ioana Device and method for reducing electromagnetic field-induced stress in the human body, mobile -generated fields included FRA1 (en) * -04-12 -10-17 Lim Meang Sor ANTI-RADIATION POUCH WOA1 (en) -04-28 -12-27 Emsi Rabat Device for protecting the human body and equipment against electromagnetic radiation

Citations (5)

* Cited by examiner, † Cited by third party Publication number Priority date Publication date Assignee Title FRA1 (en) * -02-02 -11-09 Medovnik Aron Woven belts having metallic threads and electromagnetic inserts - for therapeutic stimulation and radiation screening WOA1 (en) * -01-11 -07-23 Wool Service S.R.L. Cloth for protection against terrestrial electromagnetic fields DEA1 (en) * -08-19 -02-26 Werner Ahrens Cap protecting wearer against electro-smog DEA1 (en) * -11-25 -05-28 Manfred Kledzik Electromagnetic radiation screening arrangement e.g. for wireless telecommunication services WOA1 (en) * -01-09 -07-15 Roberto Cappellari Protection device, particularly for protection against electromagnetic radiation

Family Cites Families (2)

* Cited by examiner, † Cited by third party Publication number Priority date Publication date Assignee Title DEA1 (en) * -07-29 -02-03 Lanio H Radiation absorbent layers - for biological and physical shielding DEU1 (en) * -09-27 -02-12 Lange, Alexander, Darmstadt Cell hat

- -07-18 EP EPA patent/EPA1/en not_active Withdrawn
- -07-11 WO PCT/EP/ patent/WOA1/en active Application Filing
- -07-11 AU AUA patent/AUA1/en not_active Abandoned

Patent Citations (5)

Cited By (7)

* Cited by examiner, † Cited by third party Publication number Priority date Publication date Assignee Title DEA1 (en) * -07-29 -03-23 Dräger Safety AG & Co. KGaA Method and device for radio transmission of signals generated close to the body DEB4 (en) * -07-29 -04-10 Dräger Safety AG & Co. KGaA Method and device for radio transmission of signals generated close to the body USB2 (en) -07-29 -09-30 Dräger Safety AG & Co. KGaA Process and device for the radio transmission of signals generated near the body EPA4 (en) * -07-06 -08-10 First Data Corp Secure rfid packaging FRA1 (en) * -02-01 -08-02 Pascal Duthilleul MULTILAYER ENVELOPE DEVICE FOR ATTENUATING ELECTROMAGNETIC WAVES. WOA1 (en) * -02-01 -08-08 Duthilleul Pascal Multilayer casing device for attenuating electromagnetic waves USB2 (en) -02-01 -05-02 Pascal Duthilleul Multilayer casing device for attenuating electromagnetic waves

Also Published As

Publication number Publication date WOA1 (en) -01-24 AUA1 (en) -01-30

Legal Events

Date Code Title Description -12-07 PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE:

Are you interested in learning more about emf fabric? Contact us today to secure an expert consultation!

-01-23 17P Request for examination filed

Effective date:

-01-23 AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

-01-23 AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

-08-07 17Q First examination report despatched

Effective date:

-10-09 AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

-11-13 RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MONDOBIOTECH SA

-11-13 RIN1 Information on inventor provided before grant (corrected)

Inventor name: BLOCK, LUTZ HENNING, PROF. DR.

-05-30 STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

-07-16 18D Application deemed to be withdrawn

Effective date:

What is EMF Protection Clothing (and Why is Everyone Talking ...

We live in a wireless world. Phones in our pockets. Laptops on our laps. Smartwatches on our wrists. We’re more connected than ever – but at what cost?

Enter EMF protection clothing.

Whether you’re hearing about it for the first time or already curious, this article will break down what EMF protection clothing is, why it matters, and how fashion is stepping in to make it wearable for both women and men.

First Things First – What Is EMF?

EMF stands for electromagnetic fields. These are invisible waves of energy associated with the use of electrical power and various forms of natural and man-made lighting, including:

Mobile phones
Wi-Fi routers
Laptops and tablets
Bluetooth devices
Cell towers
Smart meters

There are two main types of EMF:

Low-frequency EMFs – from things like power lines and household appliances.
High-frequency EMFs – from things like cell phones, 5G, and Wi-Fi.

While many of these are considered “non-ionizing” (meaning they don’t immediately damage DNA the way X-rays or gamma rays can), the long-term effects of daily, constant exposure are still being studied.

Some people report symptoms they associate with EMF exposure, such as:

Headaches
Sleep issues
Brain fog
Fatigue
Anxiety

This has led to a growing movement of people seeking ways to limit their EMF exposure, and one of the easiest methods is through EMF-blocking clothing.

So, What Is EMF Protection Clothing?

EMF protection clothing is made with special materials (often silver or copper-infused fabrics) designed to create a shield between your body and the electromagnetic waves around you.

Think of it like a wearable Faraday cage. The fabric acts as a barrier, deflecting or absorbing radiation before it reaches your skin or internal organs. These pieces look and feel like regular clothes, but they’re working behind the scenes to block signals. The best part? You don’t need to change your lifestyle. Just wear them like you would your favorite hoodie or pair of boxers.

Why EMF Protection Clothing Is Important

It’s easy to ignore EMFs because we can’t see or touch them. But just because they’re invisible doesn’t mean they aren’t affecting us.

Let’s be real – most of us aren’t ditching our phones or moving off-grid anytime soon. That’s where EMF protection clothing steps in. It gives you a layer of protection while letting you live life normally.

Here’s why people are taking it seriously:

It’s preventative. Even if you don’t feel EMF symptoms now, your body is still exposed to them constantly. EMF clothing offers peace of mind.
It’s easy. No need to unplug everything. Just put your clothes on and go.
It’s discreet. Unlike clunky gadgets or devices, EMF-blocking clothing looks just like your everyday wardrobe.
It’s inclusive. Brands are designing options for women and men – and they’re not skimping on style.

EMF Protection Clothing for Men and Women

The fashion side of EMF protection is heating up. Brands are finally catching on that people want functionality and style.

For women, there are EMF-blocking shirts, leggings, camisoles, and even long-sleeve tops for travel or office wear.

For men, products range from T-shirts and hoodies to EMF-blocking underwear – an option that’s especially popular with guys who keep their phones in their pockets. One standout piece is the WaveStopper Boxer Briefs by HAVN. These boxers look like your standard premium underwear but are made with EMF-shielding silver fibers that help protect vital areas from radiation exposure.

Who Should Consider Wearing EMF Clothing?

You don’t have to be a tech minimalist or hardcore health nut to be interested in EMF protection. This kind of clothing is ideal for:

Frequent users
Remote workers glued to their laptops
Gamers or streamers with multiple screens
Anyone living near a cell tower or 5G hub
Pregnant women looking for added protection People who already experience EMF-related symptoms

That said, you don’t need to tick all those boxes to want an extra layer of protection. Just like sunscreen protects you from UV rays, EMF clothing shields you from invisible environmental stressors.

What to Look for in EMF Protection Clothing

If you’re new to this space, here are a few tips to keep in mind when shopping:

Material matters. Silver is one of the best conductors and is often used in high-quality EMF protection fabrics. Copper and stainless steel are also common.
Tested and verified. Look for brands that test their products using standard shielding tests.
Comfort counts. Just because it blocks EMF doesn’t mean it should be itchy or bulky. High-quality pieces feel just like your normal clothing.
Everyday wearability. Start with pieces you already wear (like underwear, tanks, or tees) and build from there.
Style still matters. You shouldn’t have to choose between protection and looking good. The best brands offer both.

Wrapping It Up

EMF protection clothing might sound niche now, but it’s quickly becoming part of the modern wardrobe. As we continue to live in a hyper-connected world, the need for wearable tech defense is growing, and fashion is finally stepping up to meet it.

From subtle undergarments to stylish basics that you can layer into any outfit, there are more options than ever for men and women who want to feel protected and look good doing it.

EMF protection isn’t about fear – it’s about awareness. And as more people choose to be proactive about their health, this clothing trend is becoming a fashion essential.

Contact us to discuss your requirements of emf shielding fabric. Our experienced sales team can help you identify the options that best suit your needs.

Comments

All Comments (0)

Previous: None
Next: Discover the Benefits of Silver Coated Fabric

Textile fabric comprising EMF absorbing materials and its use for ...

Textile fabric comprising EMF absorbing materials and its use for ...

EPA1 - Textile fabric comprising EMF absorbing materials and its use for protecting against HF radiation - Google Patents

Info

Links

Classifications

Definitions

Landscapes

Abstract

Description

Claims (12)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=

Family Applications (1)

Country Status (3)

Cited By (3)

Families Citing this family (3)

Citations (5)

Family Cites Families (2)

Patent Citations (5)

Cited By (7)

Also Published As

Similar Documents

Legal Events

What is EMF Protection Clothing (and Why is Everyone Talking ...

First Things First – What Is EMF?

So, What Is EMF Protection Clothing?

Why EMF Protection Clothing Is Important

EMF Protection Clothing for Men and Women

Who Should Consider Wearing EMF Clothing?

What to Look for in EMF Protection Clothing

Wrapping It Up