Stock material or miscellaneous articles – Hollow or container type article – Nonself-supporting tubular film or bag
Patent
1993-12-30
1996-05-07
Ball, Michael W.
Stock material or miscellaneous articles
Hollow or container type article
Nonself-supporting tubular film or bag
156277, 156289, 156290, 15624411, 383107, 427250, 427294, 428 352, 428 358, 446224, B32B 706, B32B 3112, B32B 3130
Patent
active
055144314
ABSTRACT:
An air bag is made by bonding a pair of sheets to each other by heat-sealing with a releasing layer corresponding to a pattern of a number of cellular air chambers sandwiched therebetween. A check valve for air infusion, which is used for filling air in the air bag, is mounted in one of the air chambers. When air is infused into a space between either of a pair of sheets and the releasing layer through an air infusion port of the check valve, the releasing layer and the corresponding sheet are peeled from each other by the air pressure. As a result, the air chambers are formed between the two layers.
REFERENCES:
patent: 1625582 (1927-04-01), Anderson
patent: 3051605 (1962-08-01), Stannard
patent: 3491791 (1970-01-01), Polk
patent: 4367071 (1983-01-01), Mizuno et al.
patent: 4490420 (1984-12-01), Yoshida
patent: 5248275 (1993-09-01), McGrath et al.
Ball Michael W.
Dai Nippon Printing Co. Ltd.
Lorin Francis J.
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