Faced foam insulation board and froth-foaming method for making same
AssigneeThe Celotex Corporation
InventorsDavid G. Gluck, Alberto DeLeon, John P. Oliver
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Abstract
A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on one or both of the major surfaces, the method including conveying a facing material along a production line, depositing a partially expanded froth foam of a plastic mixture, which contains at least one frothing agent, on the facing material, and further expanding and curing the froth foam in contact wiht the facing material to form the insulation board. The board is particularly useful as roof insulation.
Claims54
A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on at least one of the major surfaces, the method comprising:
- (a) conveying a facing material along a production line,
- (b) depositing a partially expanded froth foam, which contains at least one frothing agent, on the facing material, the partially expanded froth foam comprising a mixture for forming a rigid polymer foam selected from the group consisting of polyurethane, polyisocyanurate, phenolic polymer, polyester and epoxide foams, and the frothing agent being easily vaporizable at atmospheric pressure, and
- (c) further expanding and curing the froth foam in contact with the facing material to form the insulation board.
Dependencies are inferred from the claim text.