B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/41
B32B 5/18 (2006.01) B63B 3/68 (2006.01) C09D 5/00 (2006.01) F17C 13/00 (2006.01)
Patent
CA 1114274
ABSTRACT SPONGE CARRIER ADHESIVE PROCESS A flexible, e.g. polyurethane, open cell foam sheet is impregnated with a controlled amount of a liquid poly- merizable resin system which cures at ambient tempera- ture, and the resin impregnated sheet is immediately chilled at a suitably reduced temperature, e.g. 40°F or below, to arrest polymerization or hardening. The resulting resin impregnated sheet is stored at such reduced temperature. When needed for adhesive bonding the chilled resin impregnated sheet, cut to the de- sired pattern or size, is applied between the surfaces of objects to be bonded, e.g. fiber reinforced poly- urethane insulation blocks and plywood strips, or such insulation blocks and the steel hull of a liquid natu- ral gas (LNG) container or marine tanker. With or with- out the application of bonding pressure, as the temp- erature of the resin impregnated sheet rises to am- bient temperature, curing of the resin in the sheet to the solid state takes place, and bonding of the ad- jacent surfaces of the objects occurs, substantially without extrusion of any excess resin from the sheet, the open cell foam sheet containing the cured resin forming an integral part of the resulting bondline.
324069
Mcdonnell Douglas Corporation
Smart & Biggar
LandOfFree
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