Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1978-05-12
1981-04-21
Goolkasian, John T.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156240, 156277, 156279, 1563075, 156315, 427152, 427408, 428151, 428165, 264113, B32B 3100
Patent
active
042630770
ABSTRACT:
A painted surface is applied to a piece of hardboard simultaneously while the board is being formed in a press. A heat-resistant paint layer is coated onto a carrier, and the painted carrier is placed over a loose layer of exploded wood fibers in a heated press. The press applies pressure in excess of 400 psi and heat above 400.degree. F. to compact the wood fibers into an integral hardboard piece while the heat from the press simultaneously transfers the paint layer from the carrier and bonds it to a surface of the board. In one embodiment of the invention, the paint layer is a thermosetting resinous paint system, and the paint coat is sufficiently heat-resistant to remain in a hardened condition at or above the temperature at which the board is formed, thus forming a separate hardened paint layer on the surface of the board. The carrier can include an adherence coat which is heat-activated in the press to crosslink and bond the paint layer to the wood fibers.
REFERENCES:
patent: 3185614 (1965-05-01), Hartesveldt et al.
patent: 3511731 (1970-05-01), Raynal
patent: 3661672 (1972-05-01), McQuade, Jr.
patent: 3846219 (1974-11-01), Kunz
Avery International Corporation
Bokan Thomas
Goolkasian John T.
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