Auto-expansible cushioning bag

Details Auto-expansible cushioning bag Auto-expansible cushioning bag

1979-01-31

1980-11-11

Lesmes, George F.

Special receptacle or package

Evacuated

206241, 206523, 206591, 428 35, 156 78, B65D 8102, B65D 8530

Patent

active

042327881

ABSTRACT:
An auto-expansible cushioning bag constituted by a completely closed envelope of flexible, impervious and transparent material, and by at least two hermetically closed sachets, likewise of flexible, transparent and impervious material, which are integrated into the envelope and contain the ingredients necessary for the production of a foam of polyurethane or the like. The one sachet contains a mixture of polypropylene glycol ("polyol"), activators, water from which CO.sub.2 gas is generated to cause the expansion, and possibly a supplementary inflating agent, such as trichlorofluoromethane, and the other contains an isocyanate.

REFERENCES:
patent: 3451534 (1969-06-01), Remer et al.
patent: 3485347 (1969-12-01), McGill et al.
patent: 3598671 (1971-08-01), Wortman
patent: 3966521 (1976-06-01), Patton et al.
patent: 4087389 (1978-05-01), Coppola

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