Apparatus for coating liquid penetrable articles with polymeric

Coating apparatus – With means to apply electrical and/or radiant energy to work... – Radiant heating

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118 58, 118 70, 118227, 118239, 118316, 118324, 118643, B05C 1100, B05C 1300

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044637047

ABSTRACT:
Apparatus is provided to allow a liquid penetrable material, such as a gasket part made of compactible gasket material, while being conveyed flatwise along a given path, to be 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 pointed projections 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.

REFERENCES:
patent: 2627482 (1953-02-01), Martin et al.
patent: 2665221 (1954-01-01), Grangaard
patent: 2702761 (1955-02-01), Mannheim
patent: 2889806 (1959-06-01), Conant
patent: 3526207 (1970-09-01), Nadelson
patent: 3632383 (1972-01-01), Dominick et al.

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