Patent ID: 6420045
Filing Date: 2002-07-16
Classification: B32B,C08G,D06N,D21H,Y10T

Abstract:
Multilayer structure comprising a material wherein the material is paper, board, a nonwoven comprising cellulose fibres, a nonwoven comprising polyolefin fibres or a woven chosen from cotton, polyamide or polyester covered with a copolymer having polyamide blocks with the proviso that the polyamide blocks are not condensed from caprolactam and hydrophilic blocks wherein the hydrophilic blocks of the copolymer are polyethers having at least 50% by weight of â€”(C2H4â€”O)â€” units, the copolymer having a melting point of less than 135Â° C.; wherein the structure is a barrier to water and permeable to water vapor.