Patent ID: 8268736

Claim:
An adsorptive filtering material having a protective function against chemical agents, the adsorptive filtering material comprising: a textile backing material, constructed and arranged as a warp-knitted fabric, said warp-knitted fabric having an area weight and including a plurality of wales, extending in a first direction, a plurality of courses, extending in a second direction, and a plurality of structural elements for improving the strength of the warp-knitted fabric; wherein a portion of each structural element of said plurality of structural elements extends over at least two wales of said plurality of wales such that the strength of the warp-knitted fabric is increased in said first direction; wherein in response to a stress force applied to the warp-knitted fabric, the plurality of structural elements that extend over said at least two wales are constructed and arranged for being bundled together, the plurality of structural elements being selected from the group consisting of floats, handle loops and inlays; said textile backing material including an adsorbent for said chemical agents, said adsorbent having a composition based on activated carbon in the form of discrete particles; said warp-knitted fabric further including a discontinuously and dotwise applied adhesive for securing the adsorbent wherein said discrete particles of activated carbon are secured to said dotwise adhesive such that at least fifty percent (50%) of the surface area of each discrete particle is not contacted by said dotwise adhesive and is freely accessible for said chemical agents to be adsorbed, wherein the amount of applied adhesive is less than 100 g/m 2 , wherein said adhesive is applied to said warp-knitted fabric such that the plurality of structural elements extending over said at least two wales retain an ability to float and to become bundled together; and an air-pervious textile material layer having an area weight, said adsorbent being positioned between said air-pervious textile material layer and said textile backing material, wherein the area weight of said air-pervious textile material layer is lower than the area weight of said warp-knitted fabric.