Composite sheet material comprising polyamide film and fabric

Details Composite sheet material comprising polyamide film and fabric Composite sheet material comprising polyamide film and fabric

B - Operations, Transporting

32

B

B32B 27/12 (2006.01) B32B 27/34 (2006.01) B60R 21/16 (2006.01)

Patent

CA 2283819

A composite sheet material comprising a polymeric polyamide film bonded to a fabric, the polymeric polyamide film being selected from films having a melting point of less than about 220 ~C and the fabric is selected from polyamides and polyesters. The composite sheet materials may be used in many different applications, for example tarpaulins, sails and parachutes, but most especially for use in airbags. A method for manufacturing the composite and an airbag structure, a method for making the airbag structure and a method for recovering the composite sheet materials for recycling purposes. There is also described a method for selecting the formulation of a multiphase polymer system so as to produce films having particular laminating properties.

L'invention concerne un matériau composite en feuille comprenant une pellicule en polyamide polymère qui est liée à une toile, la pellicule en polyamide polymère étant choisie parmi des pellicules dont le point de fusion est inférieur à 220 ·C environ et la toile étant choisie parmi des polyamides et des polyesters. Les matériaux composites en feuille ont de nombreuses applications: ils peuvent entrer, par exemple, dans la composition de bâches, voiles, parachutes ou, plus particulièrement, d'airbags. L'invention se rapporte également à un procédé de fabrication du composite et d'une structure pour airbag et à un procédé de récupération des matériaux composites en feuille à des fins de recyclage. L'invention concerne en outre un procédé de sélection de la formulation d'un système polymère multiphase de façon à produire des pellicules qui aient des propriétés de stratification particulières.

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