Abstract: The invention is directed to a process for producing non-woven fabric materials in which nano- and/or microfibers are produced by an electrostatic spinning process from a polymer melt or a polymer solution and deposited to form a non-woven fabric. A carrier material in web form is arranged or is passed through between at least two spraying devices which are in the form of electrodes for producing an electrical field and each side of the carrier material is coated with the nano- and/or microfibers of opposite polarity, which are produced by means of the spraying devices.

Abstract: Described is an additional filter element for a filter apparatus for reducing emissions from a motor vehicle tank venting system. The additional filter element is connected to a main activated carbon filter and has adsorbents which, to achieve a high working capacity, in particular at 42° C., has a high micropore volume. To retain a residual loading possibly present in the micropores the adsorbents further have a mesopore volume. The micropore volume is at least 0.4 cm3/g and the mesopore volume is at a maximum 0.95 cm3/g.

Abstract: An activated carbon molded body, more particularly in honeycomb form and for use as an adsorption filter, can be produced from a mixture including activated carbon, water, novolak powder, clay, cellulose ether, liquid starch, wax, polyacrylamide and soap, by a procedure involving thoroughly mixing the constituents, extruding the mixture to form a monolithic molded body and cutting same to size, drying the body and effecting pyrolysis thereof. The adsorption filter produced therefrom can be regenerated by electrical heating under specified conditions.

Abstract: The invention relates to a mechanically stable, porous shaped activated carbon article having a first three-dimensional framework structure based on carbonized resin, a second three-dimensional inorganic framework structure comprising ceramic material and/or baked refractory material, and binding agent, as well as activated carbon particles, in which the first and second framework structures penetrate each other at least partially and the activated carbon particles are fixed to the framework structures. The invention also relates to a process for the production of such a shaped activated carbon article and to the use thereof.

Abstract: An activated carbon molded body, more particularly in honeycomb form and for use as an adsorption filter, can be produced from a mixture including activated carbon, water, novolak powder, clay, cellulose ether, liquid starch, wax, polyacrylamide and soap, by a procedure involving thoroughly mixing the constituents, extruding the mixture to form a monolithic molded body and cutting same to size, drying the body and effecting pyrolysis thereof. The adsorption filter produced therefrom can be regenerated by electrical heating under specified conditions.

Abstract: There is described a filter material, in particular in the form of a flat article, for fluid media, comprising a carrier layer and an adsorption layer, wherein the adsorption layer is formed by melt adhesive threads loaded with adsorber particles. There is also described a process for producing a filter material of that kind.

Abstract: Proposed is a process for the production of activated carbon, in which the characteristics of the activated carbon are specifically controllable by way of adjustment of the parameters of the process.

Abstract: Described is a surface element (10) which is provided for controlledly transporting moisture and for the storage of moisture and which has an air-permeable carrier (14) provided with an adsorbent. The surface element (10) also has an absorbent, moisture-storing fleece layer (12), wherein the adsorber carrier (14) and the fleece layer (12) are connected together in areal relationship by needling (16) to give an air-permeable composite material (22; 22'). The needling (16) is oriented from the fleece layer (12) towards the adsorber carrier (14). The fiber barbs (18) of the needling (16) extend from the fleece layer (12) to the adsorber carrier (14) and through the adsorber carrier (14). The fiber barbs (18) provide a wick action for the moisture, whereby moisture transport to the fleece layer (12) is optimized. Particularly upon saturation of the fleece layer (12) excess moisture is stored in the adsorbent of the adsorber carrier (14).

Abstract: In a method of producing a filter body which comprises adsorber particles fixedly connected together by an adhesive and which is formed with through passages, a base member having through holes is used, through the through holes in which are passed needles which close off the through holes. The needles project into a housing chamber which is defined by the base member and into which the adsorber particles are then introduced. The needles project with end portions out of the adsorber particle bed. The adsorber particles are consolidated by the adhesive to constitute the filter body. Thereafter the needles are withdrawn from the consolidated filter body to give a filter body with corresponding through passages.

Abstract: A process for the production of flexible surface filter material for dealing with noxious substances is described, in which a foam layer impregnated with a paste containing active particles is simultaneously joined to a preferably textile carrier layer and heavily compressed during the operation of joining it to the carrier layer. That produces a surface filter material which is highly suitable for use for protective clothing in particular because of its comparatively low level of thermal insulation, while the material is also distinguished in comparison with known materials by activity relative to noxious substances, which is uniform over the entire surface thereof.

Abstract: A filter device includes a housing having an inlet for a gaseous medium to be filtered and an outlet for the filtered medium. Disposed in the housing is a flat carrier providing a plurality of mutually adjacent layers forming a stack. The layers are so arranged in the housing that they extend in the direction of flow of the medium from the inlet through the housing to the outlet. Adsorber particles of elongate configuration are fixed on the layers and oriented at least approximately in the direction of flow of the medium through the housing.

Abstract: To produce a flexible material comprising a carrier with active particles fixed thereon by adhesive points, the adhesive points are applied to the carrier when the carrier is of larger area than in its final condition, whereby the adhesive points with active particles adhering thereto are brought closer together in the final condition of the material than when the adhesive points were initially applied.

Abstract: A multi-layer protective breathing mask adapted to cover the mouth and the nose of a wearer thereof comprises an outer layer, an inner layer and, between the outer and inner layers, a filter element comprising a particle filter and an adsorber filter. The adsorber filter may comprise one or more layers of foam material and the layers of foam material may be of different porosities. The at least one layer of foam material adsorber particles which may preferably be of a plurality of particle sizes.

Abstract: In a process for the production of a filter material comprising an open-pore foam carrier carrying adsorber particles of different particle sizes secured thereto, an adhesive is applied to the foam carrier material and then first adsorber particles are applied to the foam carrier material and into the open pores thereof. When the adhesive is still in a non-set condition, second adsorber particles which are of substantially smaller size than the first adsorber particles are then applied to the foam carrier material and into the open pores thereof.