Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1981-01-19
1983-02-22
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
264321, 4283166, 4283179, 428198, 4283084, B32B 326
Patent
active
043748856
ABSTRACT:
A cushion material and method of making the same, in which a soft polyurethane foam is cut into a slab in a predetermined form; applied to or injected into this polyurethane foam slab at a predetermined portion thereof a bonding agent or forming keeping binder which has a property to be solidified in reaction under certain conditions; said slab is shaped as compressed in a pair of forming dies into a predetermined cubic form, or integrally bonded on a cushion layer constituted by said slab of polyurethane foam another cushion layer made of polyurethane foam chips shaped in a predetermined cubic form by chopping or comminuting soft polyurethane foam scrap into chips, applying a bonding agent to them, and compressing them in a pair of forming dies.
REFERENCES:
patent: 2878153 (1959-03-01), Hacklander
patent: 3285768 (1966-11-01), Habib
patent: 4037013 (1977-07-01), Sprague
patent: 4042751 (1977-08-01), Roth
patent: 4054706 (1977-10-01), Shapiro
Hosoda Yuuichi
Ikeda Hisashi
Ikeda Bussan Co. Ltd.
Van Balen William J.
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