EP1677636B1 - Breathable protective glove with abc protection - Google Patents

Description

The present invention relates to a breathable protective glove with protective function against chemical toxins, in particular chemical warfare agents, according to the preamble of claim 1, in particular for military use or for ABC use.

There are a number of substances that are absorbed by the skin and cause serious physical injury. As an example, the blistering Lost (yellow cross) and the nerve agent sarin are mentioned. People who may come into contact with such toxins must wear suitable protective equipment or be protected by suitable protective materials against these toxins.

To protect the body, especially the extremities and the trunk, there are appropriate protective suits. To protect the head, in particular the face, as well as the respiratory tract, gas masks (ABC protective masks), possibly together with hoods, are generally worn.

Furthermore, it is also important to ensure that the hands are provided with sufficient protection against such toxins, especially by wearing protective gloves. In particular, such a protective glove must be suitable for military use or ABC use.

For this purpose, according to the prior art for military use or ABC use air and waterproof rubber gloves, in particular on butyl rubber base, used, which are impermeable to chemical toxins, especially chemical warfare agents. Disadvantage of this protective gloves is the lack of breathability and consequently low wearing comfort, which is a hindrance, especially for longer use.

The originating from the applicant itself US 6 301 715 B1 or belonging to the same patent family WO 01/82728 A1 and DE 201 21 518 U1 describe a glove for pilots with increased tactility and protection against chemical toxins, which consists of a breathable outer material, such as As leather or a textile material, and can be equipped with an activated carbon adsorption layer for adsorption of chemical warfare agents. Although this glove offers an excellent protective function against chemical poisons, in particular warfare agents, due to the activated carbon-based adsorption layer, the wearing time of this glove is limited in a military or ABC use due to the limited adsorption capacity of the activated carbon. Furthermore, this one is. Glove not easily decontaminable or regenerable.

Furthermore, the describes FR 2 752 994 A1 a protective glove against nuclear, biological and chemical pollutants with an inner filter layer containing activated carbon and adhered to a fabric carrier. The protective glove has an outer layer of cotton / polyester, which is partially subjected to a Hydrooleofugen treatment.

It is therefore an object of the present invention to provide a protective glove, in particular a breathable protective glove, with protective function against chemical toxins, in particular chemical warfare agents, which is particularly suitable for military use or ABC use and the disadvantages of the prior Technology at least partially avoids.

Another object of the present invention is that in the US 6,301,715 B1 resp., In the two aforementioned parallel patent applications WO 01/82728 A1 and DE 201 21 518 U1 further developed glove.

To solve the above-described problem, the present invention proposes a protective glove, in particular a breathable protective glove (eg military protective glove or ABC protective glove) according to claim 1. Further, advantageous embodiments of the protective glove according to the invention are the subject of the dependent claims.

The basic idea of the present invention is to provide a breathable protective glove with a multilayered layer structure having a particular flat, outside carrier layer and a barrier layer which prevents, or at least retards, the inner side (ie, in the carrying state of the hand facing) the barrier layer associated with the carrier layer and which has a Adsorption layer based on a adsorbent adsorbent material (eg based on activated charcoal) comprising chemical poisons, thereby providing an enhanced function of protection against chemical poisons, in particular chemical warfare agents, that the barrier layer in addition to the adsorption at least substantially water-impermeable, but permeable to water vapor, the passage of chemical poisons retarding or at least substantially impermeable to chemical poisons membrane which between the Trägersch and the adsorption layer is arranged.

The aforementioned membrane, which is arranged between the carrier layer and the adsorption, causes any chemical poisons which may have penetrated through the outside carrier layer, such as e.g. As chemical warfare agents, the adsorption or not reach at least for the most part not at all, so that the adsorption capacity of the adsorption remains virtually inexhaustible. By equipping the protective glove according to the invention with a special breathable membrane, which delays the passage of chemical poisons or at least substantially impermeable to chemical poisons, a good decontamination and regenerability of the protective glove according to the invention is achieved.

Fig. 1

Eine schematische Darstellung eines atmungsaktiven Schutz-handschuhs gemäß einem bevorzugten Ausführungsbeispiel der Erfindung;

Fig.2A

eine schematische Schnittdarstellung durch den Schichtaufbau eines atmungsaktiven Schutzhandschuhs gemäß einem bevorzugten Ausführungsbeispiel der Erfindung entsprechend einer Ausführungsform, bei der die Adsorptionsschicht mittels diskontinuierlichem Klebstoffauftrag an der Membran befestigt ist;

Fig.2B

eine schematische Schnittdarstellung durch den Schichtaufbau eines atmungsaktiven Schutzhandschuhs gemäß einem bevorzugten Ausführungsbeispiel der Erfindung entsprechend einer alternativen Ausführungsform, bei der die Adsorptionsschicht mittels kontinuierlichem Klebstoffauftrag an der Membran befestigt ist.

Further advantages, features, aspects and features of the present invention will become apparent from the following description of a preferred embodiment shown in the drawings. It shows:

Fig. 1

A schematic representation of a breathable protective glove according to a preferred embodiment of the invention;

2A

a schematic sectional view through the layer structure of a breathable protective glove according to a preferred embodiment of the invention according to an embodiment in which the adsorption layer is attached by means of discontinuous adhesive application to the membrane;

2B

a schematic sectional view through the layer structure of a breathable protective glove according to a preferred embodiment of the invention according to an alternative embodiment, wherein the adsorption layer is attached by means of continuous adhesive application to the membrane.

Fig. 1 shows a breathable protective glove 1 according to the invention with protective function against chemical toxins, in particular against chemical warfare agents. The protective glove 1 according to the invention has a multi-layered layer structure 2 with a particular flat, outer side carrier layer 3 and an inner side (ie, in the wear state of the hand facing), the passage of chemical poisons preventing or at least retarding barrier layer 4, which an adsorption 5 Based on a chemical poisons adsorbing adsorbent material, in particular based on activated carbon, comprises. In addition to the adsorption layer 5, the barrier layer 4 has an at least substantially water and air impermeable, but water vapor permeable (ie breathable) chemical vapor retardant or at least substantially impermeable to chemical poisons membrane 6 sandwiched between the support layer 3 and the adsorbent layer 5 is arranged. According to Urfindujigs accordingly the barrier layer 4 comprises both an adsorption layer 5 and a membrane 6 with the aforementioned properties. The combination of adsorption layer 5, on the one hand, and membrane 6, on the other hand, according to the layer structure 2 according to the invention, ensures efficient protection against chemical poisons, in particular chemical warfare agents, with simultaneously high wearing comfort, in particular breathability.

Like from the Fig. 1 2A and 2B, the inventive arrangement of the membrane 6 between the carrier layer 3 and the adsorption layer 5 ensures that poisons which may have penetrated through the outer carrier layer 3 of the protective glove 1 are already retained by the membrane 6 and consequently the adsorption layer 5 is not only reach or at best in extremely small quantities; In this way, on the one hand the adsorption capacity of the adsorption virtually never exhausted, and on the other hand, the presence of the membrane 6, an additional protection for the wearer of the protective glove 1 is provided so that a protective glove 1 with so-to-double protection against chemical toxins results (namely on the one hand by the blocking effect of the membrane 6 and on the other hand by the adsorption effect of the adsorption layer 5). Due to the presence of the special membrane 6 is also achieved that the protective glove 1 is decontaminated and regenerable; since poisons which may have penetrated through the outer layer 3 can be removed again from the membrane 6 by appropriate treatment methods (eg by flushing), for example with suitable decontamination solutions which are well known to the person skilled in the art for these purposes.

Like from the Fig. 1 2A and 2B, the membrane 6 or the barrier layer 4 is indirectly connected to the carrier layer 3 on its side facing away from the hand in the carrying state. On the other hand, the side facing the wearer's hand or the support layer 3 facing away from the diaphragm 6 (ie, the inside) of the membrane 6 is charged with the adsorption layer 5; In general, the adsorption layer 5 is attached to the membrane 6 by means of adhesive application 7. As the FIGS. 2A and 2B In this case, the adhesive application 7 can in principle be discontinuous ( Fig. 2A ) or continuously or completely ( Fig. 2B ) respectively. However, a discontinuous, in particular punctiform adhesive application is preferred accordingly Fig. 2A because this increases the wearing comfort of the protective glove 1 according to the invention, in particular prevents additional rigidity of the membrane 6, as may be the case in the case of a full-surface or continuous adhesive application. Nevertheless, it is in principle possible to provide a full-area or continuous adhesive application 7 for purposes of securing the adsorption layer 5 to the membrane 6; but in this case, care should be taken be that the adhesive 7 has breathable properties, in particular water vapor permeable, to ensure the necessary comfort.

Furthermore, it is provided that between the membrane 6 and the support layer 3, an additional, preferably flat carrier layer 8 is arranged. In this way, the membrane 6 is only indirectly connected to the carrier layer 3, via the additional carrier layer 8. The additional carrier layer 8 serves to stabilize and / or support the membrane 6, both in the processing of the membrane 6, in particular at the application of adhesive 7 and the adsorption layer 5, as well as in use or when wearing the protective glove 1. The additional support layer 8 in particular the wear resistance, such. As the tensile strength, the membrane 6 increased. For this purpose, the membrane 6 is laminated or laminated on the additional support layer by means of an adhesive (not shown in the drawings) which is applied in a point-like manner, because this prevents excessive rigidity of the membrane 6 and in this way increases the wearing comfort , The additional carrier layer 8, which is arranged between the membrane 6 and the outer carrier layer 3, can then be joined to the carrier layer 3, usually by means of a preferably discontinuous, in particular punctiform, applied adhesive. As materials for the additional carrier layer 8, for example, textile materials, in particular textile fabrics such. As wovens, knits, knits, scrims or Terctilverbundstoffe (eg., Nonwovens), which are preferably designed to be permeable to air. According to the invention, the additional carrier layer 8 has a lower basis weight than the carrier layer 3. In general, the weight per unit area of the additional carrier layer 8 is less than 60 g / m ² , in particular less than 50 g / m ² , preferably less than 40 g / m ² ; This contributes to an increased wearing comfort, because in this way the flexibility of the layer structure 2 as a whole is not substantially impaired and a good wearing comfort is achieved.

As described above, the membrane 6 is acted upon on the inside (ie on the side facing the wearer in the carrying state) with an adsorption layer 5. The adsorption layer 5, in turn, may be provided with a covering layer 9 on its side facing the hand in the wearing state, ie, facing away from the membrane 6, which is advantageously fastened to the adsorption layer 5; For example, adhesives which are preferably applied intermittently, in particular punctiform, on the cover layer 9 or else so-called hot melt adhesive webs ("hot melt adhesive webs") which are arranged between the cover layer 9 and the adsorption layer 5 are suitable for fastening the cover layer 9 to the adsorption layer 5 "Air-permeable textile materials, in particular textile fabrics, such as woven, knitted or knitted fabrics, scrims or textile composites (eg nonwovens, in particular polyamide / polyester nonwovens or PA / PES nonwovens) are preferably suitable as covering layer 9. Advantageously, the cover 9 is formed abrasion resistant or consists of an abrasion-resistant textile material. Advantageously, the covering material 9 has a weight per unit area of 5 to 150 g / m ² , in particular 10 to 125 g / m ² , preferably 40 to 100 g / m ² . The presence of the covering material or the covering layer 9 has the particular advantage that a direct contact of the skin or the hand with the adsorption 5 during. Wearing the protective glove 1 is avoided; This on the one hand causes the adsorption layer 5 is not contaminated by sweat, and on the other hand, a higher comfort is achieved because the cover layer 9 in the context of the layer structure 2 of the invention occupies the puncture of a textile inner glove, which causes a comfortable fit. On the other hand, the covering layer 9 prevents excessive mechanical loading of the adsorption material of the adsorption layer.

As described above, the membrane 6 is glued to the outside (ie, on the side facing away from the hand in the carrying state) with the additional carrier layer 8. Advantageously, the bonding takes place only discontinuously, namely punctiform, in particular in the form of a dot-shaped raster or pattern, wherein the adhesive only 30% at most, in particular only at most 25%, preferably only at most 20%, more preferably only at most 10% in the state of wear of the Hand facing away from the membrane 6 covered.

On the inside (ie on the side facing the wearer in the carrying state), the adsorption layer 5 is applied to the membrane 6, in particular by means of an adhesive 7; the application of the adhesive 7 takes place-as described above-advantageously discontinuously, in particular only punctiform, usually in the form of a dot-shaped grid, with at least 50%, in particular at least 60%, preferably at least 70%, particularly preferably at least 75%, to achieve a high adsorption performance. , most preferably at least 80% of the hand-facing, d. H. Thus, the support layer 3 opposite side of the membrane 6 may be covered or acted upon with the adsorbent material of the adsorption layer 5; Accordingly, the adhesive application 7 is to be provided over these areas of the membrane 6. In the event that the adsorption of the adsorption layer 5, a fabric (Grewebe, knitted fabric, scrim, fleece, etc.) is used from activated carbon fibers, the in the worn state of the hand facing, d. H. So the carrier layer 3 opposite side of the membrane 6 completely, d. H. 100%, to be covered with the adsorption material of the adsorption layer 5; the activated carbon fiber structure can be fixed to the membrane 6, for example, by only point-wise adhesive application.

In general, the individual layers 3, 4, 5, 6, 8 and 9 of the layer structure 2 are connected to each other; This is done by methods known per se for this purpose (eg by gluing, welding, sewing, stapling etc.). Advantageously, the bonding or fixing of the individual layers 3, 4, 5, 6, 8 and 9 of the layer structure 2 takes place in each case seamlessly, preferably without damaging the individual layers 3, 4, 5, 6, 8 and 9 (eg. by gluing, welding, etc.). In the event that the layers 3, 4, 5, 6, 8 and 9 are - at least partially - sewn or the like, it is recommended to seal the seams (eg with a so-called seam-sealing tape). In particular, the individual layers 3, 4, 5, 6, 8 and 9 of the layer structure 2 form a coherent composite.

The individual layers 3, 4, 5, 6, 8 and 9 or the layer structure 2 can extend over the entire hand including the wrist and a part of the lower forearm ( Fig. 1 ). According to this embodiment, the individual layers 3, 4, 5, 6, 8 and 9 or the layer structure 2 form a coherent glove in the form of a hand with five fingers and a shaft which extends over the knuckle of the hand.

Advantageously, the protective glove 1 is designed as a finger glove, thus has the shape of a hand with five fingers on; This not only increases the wearing comfort, but also facilitates the use for military or ABC purposes. The fact that the glove 1 according to the invention advantageously extends over the knuckle (i.e., has a glove shaft) enables a sealing connection with a simultaneously worn ABC protective suit; For this purpose, the glove and / or the ABC protective suit may be provided with appropriate sealing elements (eg zippers, hook-and-loop fasteners, sealing lips, etc.) in order to seal the transition between protective glove 1 and ABC protective suit or to seal them together.

In particular, the individual layers 3, 4, 8 and 9 in each case form the shape of a glove with five fingers: the covering layer 9 forms an inner glove, so to speak, while the carrier layer 3 forms, so to speak, an outer glove. The barrier layer 4 with adsorption layer 5 on the inside and outer membrane 6 forms, together with the additional carrier layer 8, a core glove located between inner glove and outer glove, wherein all three glove parts - outer, inner and core glove - are connected together and together form the protective glove 1 according to the invention ,

As regards the material of the carrier layer 3, which generally forms the outer layer of the protective glove 1, any, in particular breathable, materials as used for gloves in general can be used here. Examples of these are textile materials, preferably air-permeable textile materials, in particular in the form of textile fabrics, such. For example, woven, knitted, knitted, scrim or textile composites. For example, the nonwoven fabric may be a nonwoven. alternative However, the carrier layer 3 may also be formed as a leather material. It is advantageous to form the outer glove or the carrier layer 3 seamlessly in the region of the fingertips. For further details please refer to the above mentioned documents US 6 301 715 B1 respectively. WO 01/82728 A1 and DE 201 21 518 U1 to get expelled.

In order to prevent or aggravate the penetration of chemical poisons (eg concentrated droplets of warfare agents), oleophobization and / or hydrophobing of the material of the outer carrier layer 3 is recommended, in particular by a special impregnation.

The material of the carrier layer 3 or of the outer glove generally has a basis weight of 50 to 300 g / m ² , in particular 75 to 250 g / m ² , preferably 75 to 175 g / m ² . In particular, the carrier layer 3 as an air-permeable, 75 to 250 g / m ² , preferably 75 to 175 g / m ² heavy textile fabric, which may be equipped oleophobic and / or hydrophobic formed.

As far as the membrane 6 is concerned, this is generally a continuous, in particular closed or at most microporous membrane. The thickness of the membrane 6 is generally 1 to 500 .mu.m, in particular 1 to 250 .mu.m, preferably 1 to 100 .mu.m, preferably 1 to 50 .mu.m, more preferably from 2.5 to 30 .mu.m, most preferably 5 to 25 μ. To increase the wearing comfort, in particular the breathability, the membrane 6 at 25 ° C and at a thickness of 50 microns high water vapor permeability of at least 12.5 1 / m ² per 24 h, in particular at least 17.5 1 / m ² per 24 h, preferably at least 20 l / m ² per 24 h or more (measured according to the "inverted cup method" according to ASTM E 96 and at 25 ° C.) (For further details on the measurement the water vapor permeability [water vapor transmission, WVT], see also McCullough et al. "A comparison of standard methods for measuring water vapor permeability of fabrics" in Meas. Sci. Technol. [Measurements Science and Technology] 14, 1402-1408, August 2003 ). This ensures a particularly high wearing comfort.

Due to the large number of layers 3, 4, 5, 6, 8 and 9 of the layer structure 2, the water vapor permeability of the protective glove 1 as a whole is slightly lower compared to the membrane 6 alone; the water vapor permeability of the protective glove 1 overall is still very high and is at least 101 / m ² per 24 h, in particular at least 15 1 / m ² per 24 h, preferably at least 201 / m ² per 24 h, with a thickness of the membrane 6 of 50 μm (at 25 ° C).

The membrane 6 was for reasons of breathability a low water vapor transmission resistance R _et under stationary conditions - measured according to DIN EN 31 092: 1993 of February 1994 ("Textiles - Physiological effects, measurement of heat and water vapor transmission resistance under steady state conditions [sweating guarded-hotplate test ] ") or according to the same international standard ISO 11 092 - at 35 ° C of at most 30 (m ² · Pascal) / watt, in particular at most 25 (m ² · Pascal) / watt, preferably at most 20 (m ² · Pascal) / Watt, have a thickness of the membrane 6 of 50 microns. Due to the large number of layers 3, 4, 5, 6, 8 and 9 of the layer structure 2, the water vapor transmission resistance R _{et of} the protective glove 1 as a whole is slightly higher than that of the membrane 6 alone; In general, the water vapor transmission resistance R _{et of} the glove 1 is at most 30 (m ² · Pascal) / watt, in particular at most 25 (m ² Pascal) / watt, preferably at most 20 (m ² · Pascal) / watt, with a thickness of the membrane 6 of 50 μm.

Otherwise, the membrane 6 should at most only be able to absorb or swell water to a slight extent; a slight water absorption capacity or swelling capacity increases the wearing comfort. In particular, the swelling capacity or the water absorption capacity of the membrane 6 should be at most 35%, in particular at most 25%, preferably at most 20%, based on the intrinsic weight of the membrane 6. Moreover, the membrane 6 should be at least substantially impermeable to liquids, in particular water, and / or aerosols, or at least delay their passage. To achieve at most a slight swelling capacity, the membrane 6 should have no or substantially no strongly hydrophilic groups, in particular no hydroxyl groups. For the purposes of a slight swelling, the membrane 6 but weakly hydrophilic groups, such as polyether groups have.

The membrane 6 may consist of or comprise a plastic or a polymer material. Such a plastic or such a polymer may suitably z. B. be selected from the group of polyurethanes, polyetheramides, polyesteramides, polytetrafluoroethylenes and / or polymers based on cellulose and derivatives of the aforementioned compounds. For example, the membrane 6 can be obtained as a reaction product from the reaction of an isocyanate, in particular a masked or blocked isocyanate, with an isocyanate-reactive crosslinker. For example, the membrane 6 may be a polyurethane-based membrane. Similarly, the membrane 6 may also be an expanded, optionally microporous membrane based on polytetrafluoroethylene.

According to a particular embodiment, the optionally present membrane 6 may be formed as a multilayer membrane laminate or as a multilayer membrane composite. This membrane laminate or membrane composite can consist of at least two, preferably at least three interconnected membrane layers or layers. By way of example, this membrane laminate or membrane composite may comprise a core layer based on a cellulose-based polymer and two outer layers bonded to the core layer, in particular based on a polyurethane, a polyetheramide and / or a polyesteramide. The core layer based on a cellulose-based polymer may be formed as a 1 to 100 μm, in particular 5 to 50 μm, preferably 10 to 20 μm thick membrane and the two outer layers connected to the core layer may each be 1 to 100 μm, in particular 5 be formed to 50 microns, preferably 5 to 10 microns thick membrane. This particular embodiment of the membrane 6 makes it possible to combine different membrane materials, each with different properties, in particular different water vapor permeabilities and / or Baniefewirkung compared to chemical poisons, and thus to achieve an optimization of the properties of the membrane 6. For example, cellulose and cellulose derivatives are excellent barrier materials, especially against chemical pollutants or toxins such. B. warfare agents (Lost etc.), and are not attacked or dissolved by these poisons; on the other hand polyurethane-based materials prevent migration or diffusion of the softeners optionally present in the cellulosic layer and also attenuate the cellulose-related, crackling occurring during the application. Therefore, according to this particular embodiment, it is preferred that, in the case of a membrane laminate or composite, the core layer be based on a cellulose-based polymer, while the two outer layers of the membrane 6 are formed by polyurethane layers.

As described above, in particular in order to increase the stability or sealing resistance, in particular the tear strength, of the membrane 6 in the production process (eg when printing on the membrane 6 with hot adhesive 7) as well as when wearing it, the membrane 6 can be mounted on one be applied or laminated on additional carrier layer 8. In this regard, reference may be made to the above statements.

To increase the wearing comfort on the one hand and to achieve good wear resistance on the other hand, it is advantageous if the membrane 6 has a certain elasticity. In particular, it is advantageous if the membrane 6 can be stretched or stretched to at least 10%, in particular to at least 20%, preferably to at least 30% or more, at least in one direction (based on the membrane 6). The layer structure 2 as a whole should for the aforementioned purposes - in addition to a good flexibility - also have a certain elasticity; However, compared to the membrane 6, the elasticity of the layer structure 2 as a whole is slightly lower, and generally the layer structure 2 is at least 5%, preferably at least 10%, more preferably at least 15% or more, at least one Direction stretchable or stretchable.

According to a particular, not shown in the figures embodiment, the membrane 6 can simultaneously represent the adhesive layer 7 for fixing the adsorption layer 5. In this case, the membrane 6 must be self-adhesive, in particular heat-tacky, formed. According to this particular embodiment, there is a saving in weight, as can be dispensed with an additional adhesive layer 7 entirely.

In the design of the protective glove 1 according to the invention is generally carried out in such a way that the membrane 6 of the protective glove 1 consists of two interconnected, preferably sealingly interconnected, in particular glued together and / or welded pieces of material. In this case, both pieces of material each have the shape of a hand with five fingers, one of the two pieces of material for covering the front of the hand (hand inside) and the other piece of material for covering the Andrückseite (back of the hand) is determined and the two pieces of material only along their respective outer contours, in particular along the outline of the hand, connected to each other, preferably sealingly connected to each other, in particular glued together and / or welded, are.

As regards the adsorption layer 5 of the protective glove 1 according to the invention, this is generally discontinuous, d. H. the A.dsorptionsschicht 5 generally comprises discrete, adsorbent adsorbent chemical particles (eg based on activated carbon), which may be fixed for example by means of an adhesive 7 on the membrane 6. The adsorption material of the adsorption layer 5 is in particular an adsorbent material containing or consisting of activated carbon, for example a material based on activated carbon in the form of activated carbon particles and / or activated carbon fibers.

For if activated carbon-containing materials are used as adsorption material for the formation of the adsorption layer 5, the already existing high wearing comfort can be further increased because the activated carbon serves as an intermediate moisture or water reservoir (eg for sweat) and moisture or moisture Water can, so to speak, "buffer" it. When using, for example, activated carbon beads as adsorption material for the Adsarptionssehicht 5 runs of up to about 250 g / m ² or more are common, so that z. B. in a sweat break about 40 g / m ² moisture can be stored, which can then be given back to the environment in the case of a breathable carrier or outer layer 3.

According to one embodiment of the present invention, the adsorbent layer 5 comprises discrete particles of activated carbon, preferably in conformance ("charcoal") or ("carbon spheres"). In this case, the average diameter of the activated carbon particles is less than 1.0 mm, in particular less than 0.5 mm, preferably less than 0.4 mm, preferably less than 0.35 mm; however, the average diameter of the activated carbon particles is at least 0.1 mm. In this embodiment, the activated carbon particles are generally in an amount of 5 to 500 g / m ² , preferably 20 to 300 g / m ² , preferably 25 to 250 g / m ² , particularly preferably 50 to 120 g / m ² , on the Membrane 6 applied. Suitable activated carbon particles have internal surface areas (BET) of at least 800 m ² / g, in particular of at least 900 m ² / g, preferably of at least 1000 m ² / g, preferably in the range of 800 to 1500 m ² / g. Grain, especially ball carbon, has the distinct advantage that it is extremely abrasion resistant and very hard, which is of great importance in terms of wear properties. Preferably, the bursting pressure for a single particle of activated carbon, especially activated carbon granules, is generally at least about 5 Newton, more preferably at least about 10 Newton, and may reach up to about 20 Newton.

According to an alternative embodiment, the adsorption layer 5 as adsorption material comprise activated carbon fibers, in particular in the form of activated carbon fiber sheets. Such activated carbon fiber sheetings may, for example, have a weight per unit area of 20 to 200 g / m ² , in particular 30 to 150 g / m ² , preferably 15 to 120 g / m ² . These activated carbon fiber sheets may be, for example, activated carbon fiber fabrics, knits, blends or composites (eg, based on carbonized and activated cellulose and / or carbonized and activated acrylonitriles).

Likewise, it is also possible to combine 5 adsorbent material of the adsorption layer Aktivkahleteilchen and activated carbon fibers with each other. Active carbon particles have the advantage of higher adsorption capacity, while activated carbon fibers have better adsorption kinetics.

To increase the adsorption efficiency or adsorption capacity, it is possible to additionally impregnate the adsorption material of the adsorption layer 5, in particular the activated carbon particles and / or the activated carbon fibers, with at least one catalyst. Suitable catalysts according to the invention are, for example, enzymes and / or metal ions, preferably copper, silver, cadmium, platinum, palladium, zinc and / or mercury ions. The amount of catalyst can vary widely; In general, it is 0.05 to 12 wt .-%, preferably 1 to 10 wt .-%, particularly preferably 2 to 8 wt .-%, based on the weight of the adsorption layer fifth

For efficient adsorption performance, it is preferred if at least 50%, in particular at least 60%, preferably at least 70%, of the adsorption layer 5 or of the adsorption material of the adsorption layer 5 are freely accessible for the poisons or warfare agents to be adsorbed, d. H. not covered with adhesive 7. This happens because the amount and type, in particular the viscosity, of the adhesive 7 are designed such that the adsorption material of the adsorption layer 5 is not completely pressed into the adhesive 7 or sinks.

A typical protective glove 1 according to the present invention may for example consist of the following layers: The carrier layer 3 ("outer glove") may for example consist of a robust and possibly flame-retardant fiber type, preferably in a seamless round-knit form. The cover layer 9 ("inner glove") may consist of materials that are comfortable to wear on the skin (Co, Rayon, PA, PES, m-aramid), possibly in flame-resistant design, preferably in a seamless, circular knit design. The barrier layer 4, which is arranged between the inner and the outer glove, may contain activated carbon-carbon beads and / or fibers in addition to the membrane 6 for forming the adsorption layer 5 for the purpose of adsorbing the pollutants.

The protective glove 1 according to the invention offers efficient protection against chemical poisons, in particular chemical warfare agents, at the same time as high wearing comfort, in particular good breathability. The decisive advantage of the protective glove 1 according to the invention after present invention is that the protective function against chemical toxins in the protective glove 1 itself is integrated and no additional equipment is required. This not only achieves considerable weight savings and increased comfort, but also opens up the possibility of an efficient sealing connection of the transition to an ABC protective suit, so that chemical poisons, e.g. As warfare agents, the transition of protective glove / protective suit or not easily can happen. Due to these properties, the protective glove 1 according to the invention according to the present invention is particularly suitable for military use or ABC use (eg in the form of a military protective glove or ABC protective glove).

Owing to the high efficiency of the protective function of the adsorption layer 5, which is increased by the use according to the invention of the membrane 6, it is also possible to use breathable glove outer materials, such as e.g. Leather or textiles, use, so that in this way the wearing comfort can be increased without the wearer of the protective glove 1 is exposed to increased risk through the use of a breathable glove outer material.

Due to the high flexibility or good flexibility of the individual layers 3, 4, 5, 6, 8 and 9 or the layer structure 2 overall, not only a good wearing comfort is achieved, but also a good wear resistance of the protective glove 1 according to the invention with good tactility ,

The inventive design of the protective glove 1 according to the present invention, an excellent barrier effect against chemical warfare agents is achieved. The barrier effect of the protective glove 1 or, the membrane 6 to chemical warfare agents, especially bis [2-chloroethyl] sulfide (synonymously also called mustard gas, Lost or yellow cross), measured according to CRDEC-SP-84010, method 22, is at most 4 micrograms / cm ² per 24 h, in particular at most 3.5 μg / cm ² per 24 h, preferably at most 3.0 μg / cm ² per 24 h, particularly preferably at most 2.5 μg / cm ² per 24 h, at a thickness the membrane 6 of 50 microns.

The preparation of the protective glove 1 according to the invention can be carried out in a manner known per se. This is well known to those skilled in the manufacture of gloves expert.

For example, in the manufacture of a glove according to the invention, the following procedure can be followed: A membrane 6 approximately 50 to 100 μm thick is laminated or laminated by means of a point-wise applied adhesive to a carrier layer 8 which serves to reinforce and stabilize the membrane. Subsequently, the membrane 6, which may be, for example, a Polyurethanrrxernbran, on the side facing away from the carrier layer 8 printed with a water vapor permeable adhesive 7 in the form of a dot-like grid on the connecting in the still adhesive state of the adhesive 7 activated carbon beads to form the Adsorption 5 are applied. Then the adhesive 7 is optionally dried and / or cured. Subsequently, two pieces of material of the material thus obtained are cut out in the form of a hand with five fingers and along the contours of the hand - in each case with the membranes 6 to the inside - glued or welded, so that a barrier layer 4 according to the invention results in the form of an activated charcoal membrane glove. The adsorption layer 5 is subjected on the inside with a covering material 9 in the form of an inner glove, for example by gluing with a hot melt adhesive web; This can for example be done by the inner glove is placed over a metal mandrel in the form of a hand with five fingers, then z. B. is acted upon by the Schmelzkleberweb and then the previously prepared membrane glove is then slipped on. The support layer 8 is then externally connected to a support layer 3 in the form of an outer glove (eg., By means of the technique described above), so that ultimately a protective glove 1 according to the invention with a cover layer 9 as an inner glove, an outer support layer 3 as an outer glove and a between the inner and outer glove arranged barrier layer 4 of adsorption layer 5 and membrane 6, which together with the additional stabilizing layer 8 for the membrane 6 so to speak, forms a core or middle glove results, wherein the individual layers 3, 4 and 9 connected to each other are.

1. 1. Die Trägerschicht 3 ("Außenhandschuh") kann beispielsweise aus einer robusten und gegebenenfalls schwer entflammbaren Faserart bestehen, bevorzugt in einer nahtlosen rundgestrickten Form ausgeführt.
2. 2. Die Abdeckschicht 9 ("Innenhandschuh") kann aus Materialien bestehen, die angenehm auf der Haut zu tragen sind (Co, Rayon, PA, PES, m-Aramid), gegebenenfalls in flammfester Ausführung, bevorzugt in einer nahtlosen, rundgestrickten Ausführung.
3. 3. Die Sperrschicht 4 ("Funktionsschicht"), die zwischen dem Innen- und dem Außenhandschuh angeordnet ist, kann neben der Membran 6 aktivierte Aktivkohlestoffkügelchen und/oder -fasern zur Ausbildung der Adsorptionsschicht 5 zu Zwecken der Adsorption der Schadstoffe enthalten, und zwar in unterschiedlichen alternativen Ausgestaltungen, wie im folgenden beschrieben:
   1. a) Auf eine atmungsaktive Membranschicht 6 (z. B. aus PU, PES, PA, PTFE, Cellulose etc.) werden aktivierte Aktivkohlekügelchen aufgebracht. Das Erzeugen der Schicht und das Auftragen der Kügelchen kann durch Tauchen oder durch übliche Beschichtungs- und Belegungsprozesse erfolgen. Falls als Zwischenschritt eine beschichtete Folie erzeugt wird, wird diese durch geeignete Verfahren (z. B. Verkleben, Nähen, Schweißen etc.) in eine zwei- oder dreidimensionale Handform gebracht. Die Funktionsschicht wird in der Beschichtung mittels eines Netzes oder Gewirkes aus thermoplastischen Fasern verstärkt.
   2. b) Die Funktionsschicht besteht aus einem handschuhförmigen Gestrick aus aktivierten Kohlenstoffasern, hergestellt durch Carbonisieren eines entsprechenden Handschuhs aus Rayon oder Polyacrylnitrilfasern und anschließender Aktivierung bzw. gestrickt aus den auf den entsprechenden Weg hergestellten aktivierten Kohlenstoffasern.
   3. c) Auf die atmungsaktive Membranschicht gemäß a) können anstatt der Kohlenstoffkügelchen oder zusätzlich zu diesen durch herkömmliche Beflockungstechniken auch aktivierte Kohlenstofflockfasem aufgebracht werden.
   4. d) Die Kohlenstoffkügelchen und/oder -fasern werden auf einen nahtlosen oder vernähten Innenhandschuh gemäß 2.) aufgebracht.
   5. e) Über die Funktionsschichten gemäß b) oder d) kann ein nahtloser oder verschweißter Membranhandschuh (z. B. lose oder verklebend) als Flüssigkeitssperre gelegt werden.

According to a typical embodiment, a three-layered protective glove 1 according to the present invention may be composed as follows:

1. 1. The carrier layer 3 ("outer glove") may for example consist of a robust and possibly flame-retardant fiber type, preferably in a seamless circular knitted form.
2. 2. The cover layer 9 ("inner glove") may consist of materials that are comfortable to wear on the skin (Co, Rayon, PA, PES, m-aramid), possibly in flame-resistant design, preferably in a seamless, round-knit design.
3. 3. The barrier layer 4 ("functional layer"), which is arranged between the inner and the outer glove, may contain activated carbon-carbon beads and / or fibers in addition to the membrane 6 for forming the adsorption layer 5 for purposes of adsorbing the pollutants, namely different alternative embodiments, as described below:
   1. a) Activated activated carbon beads are applied to a breathable membrane layer 6 (eg made of PU, PES, PA, PTFE, cellulose, etc.). The production of the layer and the application of the beads can be done by dipping or by conventional coating and coating processes. If a coated film is produced as an intermediate step, it is brought into a two- or three-dimensional hand mold by suitable methods (eg gluing, sewing, welding, etc.). The functional layer is reinforced in the coating by means of a net or knitted fabric of thermoplastic fibers.
   2. b) The functional layer consists of a glove-shaped knit made of activated carbon fibers, prepared by carbonizing a corresponding glove made of rayon or polyacrylonitrile fibers and subsequent activation or knitted from the activated carbon fibers produced in the corresponding way.
   3. c) On the breathable membrane layer according to a) instead of the carbon beads or in addition to these by conventional Flockungstechniken also activated Kohlenstofflockfasem can be applied.
   4. d) The carbon beads and / or fibers are applied to a seamless or sewn inner glove according to 2.).
   5. e) A seamless or welded membrane glove (eg, loose or adhesive) may be applied as a liquid barrier via the functional layers according to b) or d).

The individual layers mentioned above (inner glove, functional layer and outer glove) are - according to the structure - put together and the arm end z. B. connected by a seam. In addition, if desired, the layers may also be fixed to the tops of the fingers and on the back of the hand by adhesives (such as by hot melt adhesive, for example with thermal activation of the adhesive), double sided adhesive tape strips or hook and loop fasteners or the like.

Further embodiments, modifications and variations of the present invention will be readily apparent to those skilled in the art upon reading the description and practicable without departing from the scope of the present invention.

Claims (30)

1. Breathable protective glove (1) having a protective function against chemical poisons, especially chemical warfare agents, comprising a multilayered layer construction (2) comprising a specifically sheetlike carrier layer (3) and, assigned to the carrier layer (3), a blocking layer (4) which, in the donned state, faces the hand and which prevents or at least retards the passage of chemical poisons, the blocking layer (4) comprising

   - an adsorbing layer (5) based on an adsorbing material for chemical poisons which is based on activated carbon in particular, and

   - an at least essentially water and air impervious but water vapour pervious membrane (6) which retards the passage of chemical poisons or is at least essentially impervious to chemical poisons and which is disposed between the carrier layer (3) and the adsorbing layer (5),

   wherein the membrane (6) is on its side which in the donned state faces the hand and faces away from the carrier layer (3) invested with the adsorbing layer (5),
   characterized in that
   an additional, sheetlike carrier layer (8) serving to stabilize and/or support the membrane (6) is disposed between the membrane (6) and the carrier layer (3), wherein the additional carrier layer (8) has a lower basis weight than the carrier layer (3), and wherein the membrane (6) is laminated by means of a dotwise applied adhesive, via its side which in the donned state faces away from the hand, onto the additional carrier layer (8).
2. Protective glove according to Claim 1 characterized in that the adsorbing layer (5) can be secured to the membrane (6) by means of adhesive (7).
3. Protective glove according to one or more of the preceding claims characterized in that the additional carrier layer (8) is constructed as a preferably air pervious textile material, especially a textile fabric, such as a woven, loop-formingly knitted, loop-drawingly knitted, nonwoven-scrim or bonded fabric and/or in that the additional carrier layer (8) has a basis weight of less than 60 g/m², especially of less than 50 g/m² and preferably of less than 40 g/m², and/or in that the additional carrier layer (8) is conjugated with the carrier layer (3), in particular by means of a preferably dotwise applied adhesive.
4. Protective glove according to one or more of the preceding claims characterized in that a covering layer (9) is applied atop that side of the adsorbing layer (5) which in the donned state faces the hand and faces away from the membrane (6), in particular wherein the covering layer (9) is secured to the adsorbing layer (5), in particular by means of an adhesive applied atop the covering layer (9) in a preferably discontinuous and more preferably dotwise manner, or by means of a hotmelt web, and/or in particular wherein the covering layer (9) is a preferably air pervious textile material, especially a textile fabric, preferably a woven, loop-formingly knitted, loop-drawingly knitted, nonwoven-scrim or bonded fabric such as a batt, especially a polyamide-polyester (PA/PES) batt, and/or in particular wherein the covering layer (9) is constructed to be abrasion resistant and consists of an abrasion-resistant textile material in particular, and/or in particular wherein the covering layer (9) has a basis weight in the range from 5 to 150 g/m², especially in the range from 10 to 125 g/m² and preferably from 40 to 100 g/m².
5. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is adhered to the additional carrier layer (8) by means of an adhesive applied in the form of a dotwise grid,
   wherein the adhesive covers not more than 30 %, in particular not more than 25 %, preferably not more than 20 % and more preferably not more than 10 % of that side of the membrane (6) which in the donned state faces away from the hand, and/or in that adsorbing layer (5) is applied atop the membrane (6) by means of an adhesive (7), in particular wherein the adhering is only dotwise and in particular in the form of a dotwise grid, and/or in particular wherein not less than 50 %, especially not less than 60 %, preferably not less than 70 %, more preferably not less than 75 % and most preferably not less than 80 % of that side of the membrane (6) which in the donned state faces the hand and faces away from the carrier layer (3) is invested with the adsorbing material of the adsorbing layer (5).
6. Protective glove according to one or more of the preceding claims characterized in that the individual layers (3, 4, 5, 6, 8, 9) of the layer construction (2) are each interconjugated and/or in that the individual layers (3, 4, 5, 6, 8, 9) of the layer construction (2) form a composite.
7. Protective glove according to one or more of the preceding claims characterized in that the protective glove (1) is constructed as a finger glove, and/or in that the protective glove (1) has the shape of a hand with five fingers.
8. Protective glove according to one or more of the preceding claims characterized in that the carrier layer (3) is constructed as a textile material, preferably an air pervious textile material, especially a textile fabric, in particular wherein the textile material can be a woven, loop-formingly knitted, loop-drawingly knitted, nonwoven-scrim or bonded fabric, in particular
   wherein the bonded fabric can be a batt, and/or in that the carrier layer (3) is constructed as a leather material.
9. Protective glove according to one or more of the preceding claims characterized in that the carrier layer (3) is oleophobicized and/or hydrophobicized, especially by a specific impregnation, and/or in that the material of the carrier layer (3) has a basis weight in the range from 50 to 300 g/m², especially in the range from 75 to 250 g/m² and preferably from 75 to 175 g/m², and/or in that the carrier layer (3) is constructed as an air pervious textile fabric which has a basis weight in the range from 75 to 250 g/m² and preferably from 75 to 175 g/m² and may have been finished to be oleophobic and/or hydrophobic.
10. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is a continuous, in particular uninterrupted or at most microporous membrane, and/or in that the thickness of the membrane (6) is in the range from 1 to 500 µm, especially in the range from 1 to 250 µm, preferably in the range from 1 to 100 µm, more preferably in the range from 1 to 50 µm, even more preferably in the range from 2.5 to 30 µm and most preferably in the range from 5 to 25 µm, and/or in that the membrane (6) has a 25 °C water vapour transmission rate of not less than 12.5 l/m² per 24 h, especially not less than 17.5 l/m² per 24 h and preferably not less than 20 l/m² per 24 h or more when 50 µm thick, and/or in that the protective glove (1) has a 25 °C water vapour transmission rate of not less than 10 l/m² per 24 h, especially not less than 15 l/m² per 24 h and preferably not less than 20 l/m² per 24 h when membrane (6) is 50 µm thick.
11. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) has a steady state water vapour transmission resistance R_et, measured according to DIN EN 31 092: 1993 (February 1994) and ISO 11 092, at 35 °C of not more than 25 (m² · pascal)/watt, especially not more than 20 (m² · pascal)/watt and preferably not more than 13 (m² · pascal)/watt when 50 µm thick, and/or in that the protective glove (1) has a steady state water vapour transmission resistance R_et, measured according to DIN EN 31 092: 1993 (February 1994) and ISO 11 092, at 35 °C of not more than 30 (m² · pascal)/watt, especially not more than 25 (m² · pascal)/watt, preferably not more than 20 (m² · pascal)/watt, when membrane (6) is 50 µm thick.
12. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is at most only minimally swellable and/or capable of imbibing water, in particular wherein the swellability and/or the water-imbibing capacity of the membrane (6) is not more than 35 %, especially not more than 25 % and preferably not more than 20 %, based on the self-weight of membrane (6) and/or in that the membrane (6) is at least essentially impervious to liquids, especially water, and/or to aerosols, or at least retards their passage.
13. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) comprises no or essentially no strongly hydrophilic groups, especially no hydroxyl groups, and/or in that the membrane (6) comprises weakly hydrophilic groups, especially polyether groups.
14. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) comprises a plastics material and/or a polymer and/or consists thereof, in particular wherein the plastics material and/or the polymer may be selected from the group of polyurethanes, polyetheramides, polyesteramides, polytetrafluoroethylenes and/or polymers based on cellulose and/or derivatives of the aforementioned compounds.
15. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is obtained as a product of the reaction of an isocyanate, especially of a masked or blocked isocyanate, with an isocyanate-reactive crosslinker.
16. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is a polyurethane-based membrane, and/or in that the membrane (6) is an expanded, possibly microporous membrane based on polytetrafluoroethylene.
17. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is constructed as a multilayered membrane laminate and/or as a multilayered membrane conjugate, in particular wherein the membrane laminate and/or the membrane conjugate consists of at least two and preferably at least three interconjugated layers or plies.
18. Protective glove according to Claim 17 characterized in that the membrane laminate or conjugate comprises a core layer based on a cellulose-based polymer and two outer layers conjugated with the core layer, in particular on the basis of a polyurethane, of a polyetheramide and/or of a polyesteramide, in particular wherein the core layer may be constructed on the basis of a cellulose-based polymer, as a membrane from 1 to 100 µm, especially from 5 to 50 µm and preferably from 10 to 20 µm in thickness, and/or in particular wherein the two outer layers conjugated with the core layer can each be constructed as a membrane from 1 to 100 µm, especially from 5 to 50 µm and preferably from 5 to 10 µm in thickness.
19. Protective glove according to Claim 17 characterized in that the membrane laminate or conjugate comprises a core layer based on a polymer based on a polyurethane and two polyurethane-based outer layers conjugated with the core layer.
20. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) consists of two interconjugated, preferably sealingly interconjugated, in particular mutually adhered and/or welded together pieces of material, in particular wherein the two pieces of material each have the shape of a hand with five fingers, one of the two pieces of material being intended to cover a hand's front surface (a hand's inside surface) and the other piece of material being intended to cover a hand's reverse surface (back of the hand) and the two pieces of material being interconjugated, preferably sealingly interconjugated, especially mutually adhered and/or welded together, only along their respective outer contours, in particular along the hand outline.
21. Protective glove according to one or more of the preceding claims characterized in that the membrane (6) is self-adhesive, in particular thermotacky, and/or in that the membrane (6) simultaneously serves as an adhesive layer (7) to secure the adsorbing layer (5).
22. Protective glove according to one or more of the preceding claims characterized in that the adsorbing layer (5) is discontinuous, and/or in that the adsorbing layer (5) comprises discrete adsorbing particles which are capable of adsorbing chemical poisons which are in particular based on activated carbon, and/or in that the adsorbing material of the adsorbing layer (5) is an adsorbing material containing activated carbon or consisting thereof, and/or in that the adsorbing material of the adsorbing layer (5) is a material based on activated carbon, especially in the form of activated carbon particles and/or activated carbon fibers.
23. Protective glove according to one or more of the preceding claims characterized in that the adsorbing layer (5) comprises discrete particles of activated carbon, preferably in granule form ("granulocarbon") or spherical form ("spherocarbon"), in particular wherein the average diameter of the activated carbon particles is < 1.0 mm, especially < 0.5 mm, preferably < 0.4 mm, more preferably < 0.35 mm, even more preferably < 0.3 mm, and/or the average diameter of the activated carbon particles is not less than 0.1 mm, and/or in particular wherein the activated carbon particles have been applied atop the membrane (6) in an amount in the range from 5 to 500 g/m², especially in the range from 10 to 400 g/m², preferably in the range from 20 to 300 g/m², more preferably in the range from 25 to 250 g/m², even more preferably in the range from 50 to 150 g/m² and most preferably in the range from 50 to 120 g/m², and/or in particular wherein the activated carbon particles have an internal surface area (BET) of not less than 800 m²/g, especially of not less than 900 m²/g, preferably of not less than 1000 m²/g and more preferably in the range from 800 to 1500 m²/g, and/or in particular wherein the activated carbon particles have a bursting pressure per individual activated carbon particle, especially activated carbon granule or spherule, of not less than 5 newtons, especially not less than 10 newtons and/or of up to 20 newtons.
24. Protective glove according to one or more of the preceding claims characterized in that the adsorbing layer (5) comprises activated carbon fibers, in particular in the form of an activated carbon fabric, in particular wherein the activated carbon fabric has a basis weight in the range from 20 to 200 g/m², especially in the range from 30 to 150 g/m² and preferably in the range from 50 to 120 g/m², and/or in particular wherein the activated carbon fabric is a woven, loop-formingly knitted, nonwoven-scrim or bonded fabric, in particular on the basis of carbonized and activated cellulose and/or of a carbonized and activated acrylonitrile.
25. Protective glove according to one or more of the preceding claims characterized in that the adsorbing layer (5) is additionally impregnated with at least one catalyst, in particular wherein the catalyst used comprises enzymes and/or metal ions, preferably copper, silver, cadmium, platinum, palladium, zinc and/or mercury ions, and/or the amount of catalyst is in the range from 0.05 % to 12 % by weight, preferably in the range from 1 % to 10 % by weight and more preferably in the range from 2 % to 8 % by weight, based on the weight of the adsorbing layer (5).
26. Protective glove according to one or more of the preceding claims characterized in that the proportion of the adsorbing layer (5) which is freely accessible to the poisons and warfare agents to be adsorbed is not less than 50 %, in particular not less than 60 % and preferably not less than 70 %.
27. Protective glove according to one or more of the preceding claims characterized in that the protective glove (1) and/or the membrane (6) offers a permeation resistance to chemical warfare agents, especially bis[2-chloroethyl] sulphide (mustard gas, Hd, Yellow Cross), measured according to CRDEC-SP-84010, method 2.2, that allows the passage of not more than 4 µg/cm² per 24 h, in particular not more than 3.5 µg/cm² per 24 h, preferably not more than 3.0 µg/cm² per 24 h and more preferably not more than 2.5 µg/cm² per 24 h when membrane (6) is 50 µm thick.
28. Breathable protective glove (1) according to one or more of the preceding claims having a protective function against chemical poisons, especially chemical warfare agents, according to one or more of the preceding claims comprising a multilayered layer construction (2) comprising a specifically sheetlike carrier layer (3) and, assigned to the carrier layer (3), a blocking layer (4) which, in the donned state, faces the hand, which prevents or at least retards the passage of chemical poisons, the blocking layer (4) comprising

    - an adsorbing layer (5) based on an adsorbing material for chemical poisons which is based on activated carbon in particular and

    - an at least essentially water and air impervious but water vapour pervious membrane (6) which retards the passage of chemical poisons or is at least essentially impervious to chemical poisons and which is disposed between the carrier layer (3) and the adsorbing layer (5),

    wherein the membrane (6) is on its side which in the donned state faces the hand and faces away from the carrier layer (3) invested with the adsorbing layer (5),
    characterized in that
    an additional, sheetlike carrier layer (8) serving to stabilize and/or support the membrane (6) is disposed between the membrane (6) and the carrier layer (3), wherein the additional carrier layer (8) has a lower basis weight than the carrier layer (3), and wherein the membrane (6) is laminated by means of a dotwise applied adhesive, via its side which in the donned state faces away from the hand, onto the additional carrier layer (8), and in that the protective glove (1) and/or the membrane (6) have a permeation resistance to chemical warfare agents, especially bis[2-chloroethyl] sulphide, allowing the passage of not more than 4 µg/cm² per 24 h when the membrane (6) is 50 µm thick.
29. Breathable protective glove (1) according to one or more of the preceding claims having a protective function against chemical poisons, especially chemical warfare agents, comprising a multilayered layer construction (2) comprising a specifically sheetlike carrier layer (3) and, assigned to the carrier layer (3), a blocking layer (4) which, in the donned state, faces the hand, which prevents or at least retards the passage of chemical poisons, the blocking layer (4) comprising

    - an adsorbing layer (5) based on an adsorbing material for chemical poisons which is based on activated carbon in particular and

    - an at least essentially water and air impervious but water vapour pervious membrane (6) which retards the passage of chemical poisons or is at least essentially impervious to chemical poisons and which is disposed between the carrier layer (3) and the adsorbing layer (5),

    wherein the membrane (6) is on its side which in the donned state faces the hand and faces away from the carrier layer (3) invested with the adsorbing layer (5),
    characterized in that
    an additional, sheetlike carrier layer (8) serving to stabilize and/or support the membrane (6) is disposed between the membrane (6) and the carrier layer (3), wherein the additional carrier layer (8) has a lower basis weight than the carrier layer (3), and wherein the membrane (6) is laminated by means of a dotwise applied adhesive, via its side which in the donned state faces away from the hand, onto the additional carrier layer (8), and in that the protective glove (1) has a 25 °C water vapour transmission rate of not less than 10 l/m² per 24 h when the membrane (6) is 50 µm thick.
30. Breathable protective glove (1) according to one or more of the preceding claims having a protective function against chemical poisons, especially chemical warfare agents, comprising a multilayered layer construction (2) comprising a specifically sheetlike carrier layer (3) and, assigned to the carrier layer (3), a blocking layer (4) which, in the donned state, faces the hand, which prevents or at least retards the passage of chemical poisons, the blocking layer (4) comprising

    - an adsorbing layer (5) based on an adsorbing material for chemical poisons which is based on activated carbon in particular and

    - an at least essentially water and air impervious but water vapour pervious membrane (6) which retards the passage of chemical poisons or is at least essentially impervious to chemical poisons and which is disposed between the carrier layer (3) and the adsorbing layer (5),

    wherein the membrane (6) is on its side which in the donned state faces the hand and faces away from the carrier layer (3) invested with the adsorbing layer (5),
    characterized in that
    an additional, sheetlike carrier layer (8) serving to stabilize and/or support the membrane (6) is disposed between the membrane (6) and the carrier layer (3), wherein the additional carrier layer (8) has a lower basis weight than the carrier layer (3), and wherein the membrane (6) is laminated by means of a dotwise applied adhesive, via its side which in the donned state faces away from the hand, onto the additional carrier layer (8), and in that the protective glove (1) has a steady state water vapour transmission resistance R_et at 35 °C of not more than 30 (m² · pascal)/watt when the membrane (6) is 50 µm thick.

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