Reinforced thermoplastic resin film air bag
First Claim
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1. A thermoplastic resin film air bag, comprising:
- a plurality of thermoplastic resin films for constituting the air bag, said thermoplastic resin films having peripheries and being superposed together along the peripheries, andat least one reinforcing thermoplastic resin film superposed on at least one surfaces of the peripheries of the thermoplastic resin films opposite to facing surfaces superposed each other, said at least one reinforcing thermoplastic resin film and the thermoplastic resin films superposed together being fused and bonded together along the peripheries of the thermoplastic resin films inside the at least one reinforcing thermoplastic resin film to thereby securely connect the thermoplastic resin films while reinforcing a fuse bonded portion of the thermoplastic resin films, total thicknesses of the fuse bonded portion of the thermoplastic resin films and the at least one reinforcing thermoplastic resin film being less than total thicknesses of the thermoplastic resin films and the at least one reinforcing thermoplastic resin film outside the fuse bonded portion, the width of the fuse bonded portion being less than the width of the at least one reinforcing thermoplastic resin film and greater than the width between edges of the thermoplastic resin films and an edge of the fuse bonded portion near the edges of the thermoplastic resin films.
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Abstract
An air bag is formed of a plurality of thermoplastic resin films fused together, wherein the thermoplastic resin films include a first film and second film which are superposed on each other and fused together by heat sealing along the peripheries thereof. Third thermoplastic resin films are superposed on a fused portion of the first and second films and fused together with the first and second films by heat sealing. The third thermoplastic resin films are disposed at the front side of the first film and at the front side of the second film.
43 Citations
6 Claims
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1. A thermoplastic resin film air bag, comprising:
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a plurality of thermoplastic resin films for constituting the air bag, said thermoplastic resin films having peripheries and being superposed together along the peripheries, and at least one reinforcing thermoplastic resin film superposed on at least one surfaces of the peripheries of the thermoplastic resin films opposite to facing surfaces superposed each other, said at least one reinforcing thermoplastic resin film and the thermoplastic resin films superposed together being fused and bonded together along the peripheries of the thermoplastic resin films inside the at least one reinforcing thermoplastic resin film to thereby securely connect the thermoplastic resin films while reinforcing a fuse bonded portion of the thermoplastic resin films, total thicknesses of the fuse bonded portion of the thermoplastic resin films and the at least one reinforcing thermoplastic resin film being less than total thicknesses of the thermoplastic resin films and the at least one reinforcing thermoplastic resin film outside the fuse bonded portion, the width of the fuse bonded portion being less than the width of the at least one reinforcing thermoplastic resin film and greater than the width between edges of the thermoplastic resin films and an edge of the fuse bonded portion near the edges of the thermoplastic resin films. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification