Patent ID: 8266726

Claim:
Air pervious adsorption filter material for NBC protective apparel for wearing next to the skin, wherein the adsorption filter material has a multilayered construction, wherein the multilayered construction comprises: a first air pervious textile sheet material, a second air pervious textile sheet material and an adsorption layer disposed between the first and the second textile sheet materials, wherein the adsorption layer includes discrete sorbent particles based on activated carbon, the sorbent particles adsorbing chemical or biological poison and noxiant materials and the sorbent particles being in the form of activated carbon particles in grain form or spherical form, wherein the sorbent particles are secured to at least one of the first textile sheet material and to the second textile sheet material by means of an adhesive, wherein the adhesive is applied discontinuously to at least one of the first textile sheet material and the second textile sheet material, wherein the second textile sheet material is bonded to at least one of the first textile sheet material and the sorbent particles such that a firm bond results; wherein the first textile sheet material and the second textile sheet material are each constructed to be elastic in at least one direction and have at least essentially the same elasticity properties; wherein at least one of the first textile sheet material and the second textile sheet material comprises a mixture of at least two different fiber varieties, wherein at least one of the first textile sheet material and the second textile sheet material comprises at least one elastic or reversibly stretchable fiber variety: wherein the fiber variety is physically and chemically stable; wherein the fiber variety is a fiber variety other than polyurethane fibers and is selected from polyolefin fibers and polyester fibers; and wherein the adsorption filter material has an elastic stretch in at least one direction of at least 10 % at 20 N, based on the adsorption filter material.