Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1983-10-31
1984-11-13
Van Balen, William J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 90, 156310, 156313, 2065241, 428 71, 428 76, 428157, 428194, 4283133, 4283215, B32B 104, B32B 106, B32B 318
Patent
active
044824149
ABSTRACT:
An enclosure for having foam generated and contained therein is defined between two layers of flexible thermoplastic material, which are edge sealed to define an enclosed unit. One inwardly facing surface of one layer is coated with a first foam generating agent, such as crystals, and the opposite, inwardly facing surface of the other layer is coated with capsules of another foam forming agent, wherein the capsules prevent mixing of the two agents for generating foam. Upon subsequent rupture of the capsules, the foam generating agents mix, react and generate foam in the enclosure. An additional layer may be disposed between the two exterior layers. Both surfaces of the additional layer also carry one of the foam forming agents, whereby two enclosures are defined, one over the other, each for generating and containing foam. In forming the enclosed unit, each layer is separately coated with its respective foam forming agent and thereafter the layers are secured together to define the enclosure.
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patent: 4273827 (1981-06-01), Sweeney et al.
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