Abstract: The composite material comprises an elastic film (F), made of polymer material, and a coating made of flocked fibers (13) on at least one face. The fibers are fixed to the film by a layer (C) of bonding material.

Abstract: The composite material comprises an elastic film (F), made of polymer material, and a coating made of flocked fibers (13) on at least one face. The fibers are fixed to the film by a layer (C) of bonding material.

Abstract: A method to produce a perforated web material, wherein the web material (N) is fed through a nip (11) between a first roller (7) and a second roller (9) rotating in opposite directions and pressed against each other, the first roller (7) being provided with protuberances (7P) for perforation. Characteristically, the web material is heated before being fed into said nip.

Abstract: An absorbent structure is described, said structure comprising: a first acquisition and distribution layer (S1) formed by a nonwoven fabric consisting of non-absorbent fibers; a second absorbent layer (s2) formed by a nonwoven fabric consisting of absorbent fibers and comprising particles (P) of at least one superabsorbent polymer distributed in the nonwoven fabric, in which at least said second layer is formed by staple fibers.

Abstract: An apparatus is described for forming a web (N) that is permeable to liquids and designed to separate two environments and to allow the liquid to flow in one direction from one of said environments to the other, in which said web is caused to pass between two contra-rotating cylinders (5, 7) that are pressed against each other, one of said cylinders (7) having a surface provided with projections which cause perforations in said web (N). The cylinder (7) with the projections is turned at a peripheral speed greater than the peripheral speed of the other cylinder (5), with a consequent relative slipping action between the surfaces of the two cylinders (5, 7).

Abstract: There is described a three-dimensional membrane generally of a thin plastic film which has apertures therein created by simultaneously perforating the film and pushing the material from the holes to one side of the apertures and piling it up to create an overall membrane thickness which is at least 10 times the original thickness of the film. It has particular application as a topsheet for sanitary napkins and the like.

Abstract: A method for forming a web (N) that is permeable to liquids and designed to separate two environments and to allow the liquid to flow in one direction from one of said environments to the other. The web is caused to pass between two contra-rotating cylinders (5, 7) that are pressed against each other, one of said cylinders (7) having a surface provided with projections which cause perforations in said web (N). The cylinder (7) with the projections is turned at a peripheral speed greater than the peripheral speed of the other cylinder (5), with a consequent relative slipping action between the surfaces of the two cylinders (5, 7).