Breathable elastic polymeric film laminates

Details Breathable elastic polymeric film laminates Breathable elastic polymeric film laminates

B - Operations, Transporting

29

C

B29C 47/04 (2006.01) A61F 13/15 (2006.01) B26F 1/26 (2006.01) B32B 3/10 (2006.01) B32B 3/14 (2006.01) B32B 27/12 (2006.01) D03D 17/00 (2006.01)

Patent

CA 2268431

An elastomeric breathable three-dimensional composite laminate (18) and the process for producing the same are disclosed. A carrier material (10) is supplied onto a top surface of continuous portions of an elastomeric film (12) to form the composite material. A pressure differential is applied to a bottom surface of the film for a period of time sufficient for three-dimensional apertured structures (36) to be formed in the film.

Cette invention se rapporte à un laminé composite (18) imper-respirant, élastomère, à trois dimensions et au procédé de fabrication correspondant. On dispose une matière support (10) sur la face supérieure de zones continues d'un film élastomère (12) afin de former la matière composite. On applique un différentiel de pression au niveau de la face inférieure du film pendant un laps de temps suffisant pour former dans le film des structures (36) perforées en trois dimensions.

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