US 12,059,871 B2 · Multilayer films for airbag applications and related methods

Abstract

A multilayer film is provided that includes a) a barrier layer including a thermoplastic polyester elastomer or a polyamide copolymer; b) an intermediate layer provided on the barrier layer and including a maleic anhydride (MAH)-grafted polyolefin and an α-olefin copolymer; and c) an adhesive layer provided on the intermediate layer and including a thermoplastic polyester elastomer or a polyamide copolymer. The multilayer film enables production of gas-tight multilayer laminates which exhibit an excellent peel resistance combined with a low weight and/or thickness. Further, a multilayer laminate and an inflatable airbag that include a fabric layer adhered to the multilayer film, as well as methods of manufacturing are described.

Claims20

Dependent claims

A multilayer film comprising:

a) a barrier layer comprising a thermoplastic polyester elastomer or a polyamide copolymer;
b) an intermediate layer provided on the barrier layer and comprising both a maleic anhydride (MAH)-grafted polyolefin and an α-olefin copolymer;
and
c) an adhesive layer provided on the intermediate layer and comprising a thermoplastic polyester elastomer or a polyamide copolymer;
and
wherein in the intermediate layer, the content of maleic anhydride (MAH)-grafted polyolefin is between 10 to 95 wt.-%, and the content of α-olefin copolymer is between 5 to 90 wt.-%, based on the total weight of the intermediate layer;
and
wherein a content of the MAH-grafted polyolefin is capable of exceeding the content of the α-olefin copolymer in the intermediate layer.

5 more elements

Dependencies are inferred from the claim text.

Multilayer films for airbag applications and related methods

Life of this patent

Multilayer films for airbag applications and related methods

Life of this patent

Abstract

Claims20