Continuous melt coating method and apparatus

Details Continuous melt coating method and apparatus Continuous melt coating method and apparatus

1993-07-07

1995-04-18

Beck, Shrive

Coating processes

Frictional application

427277, 427278, 427365, 427369, 4273883, 427287, 118 76, 118 77, 156231, 156238, B05D 100

Patent

active

054076978

ABSTRACT:
A method of continuously painting one side of a moving substrate metal strip (1) utilizing a thermosetting polymer based paint composition comprises pre-heating the strip in a pre-heat furnace (2) to a pre-heat temperature above the glass transition temperature of the paint composition, driving a solid block (8) of the paint composition into collision with the strip at a predetermined block speed to cause liquid paint to be melted from the block and applied to the strip at a precisely controlled deposition rate. The deposit, which for thin paint coats is discontinuous, is then spread over the surface of the strip by a pressure roll (14) and emerges therefrom as a smooth coat of wet paint. A bead of liquid paint (17) builds up on the strip on the up stream side of the pressure roll and the block speed may be adjusted in response to the bead size. The emergent strip then travels through a paint curing furnace (5) and a bath (6) to complete the process.

REFERENCES:
patent: 257761 (1882-05-01), Ridgway
patent: 2327739 (1943-08-01), Peters
patent: 3305392 (1967-02-01), Britt
patent: 3551184 (1970-12-01), Dremann et al.
patent: 3630802 (1971-12-01), Dettling
patent: 3791856 (1974-02-01), Duling et al.
patent: 5059446 (1991-10-01), Winkle, Sr. et al.
patent: 5077080 (1991-12-01), Zeiss et al.
patent: 5281435 (1994-01-01), Buecher

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