Coating processes – Application to opposite sides of sheet – web – or strip – Roller applicator utilized
Patent
1981-07-22
1983-07-26
Lawrence, Evan K.
Coating processes
Application to opposite sides of sheet, web, or strip
Roller applicator utilized
427209, 427290, 427292, 427314, 427316, B05D 306
Patent
active
043954413
ABSTRACT:
A liquid penetrable material such as a compactible gasket material is coated with a liquid dispersion of polymer or polymers, by first preheating the liquid penetrable material to a temperature sufficient to prevent any substantial penetration of liquid into the material when the material at the preheated temperature is coated with the liquid dispersion of polymer or polymers. The preheated material is then coated with the liquid dispersion of polymer or polymers in an amount sufficient to form a fluid-impermeable barrier over the material and the coated material is supported on a plurality of support members through a drying section until the coating is in a tack-free condition. After drying the material to a tack-free condition, it is supported on a conveyor through a curing station to cure the coating. Thereafter the material is delivered by suitable conveyors to an inspection and packaging station, but may be passed en route through another coating station, this time to receive a suitable release coating. In a specific embodiment of the invention, the gasket is supported through the drying section on a plurality of continuous elastomeric cords.
REFERENCES:
patent: 2627482 (1953-02-01), Martin et al.
patent: 2665221 (1954-01-01), Grangaard
patent: 2889806 (1959-06-01), Conant
patent: 3526207 (1970-09-01), Nadelson
patent: 3632383 (1972-01-01), Dominick et al.
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