PVC sheet screen printing process

Details PVC sheet screen printing process PVC sheet screen printing process

1993-10-18

1995-09-05

Dudash, Diana

Coating processes

Direct application of electrical, magnetic, wave, or...

Polymerization of coating utilizing direct application of...

427296, 427316, 427322, 4273935, 101129, B05D 302, B05D 306, B05D 310, B41M 112

Patent

active

054477581

ABSTRACT:
A screen printing process for providing long-lasting, visually-appealing images on PVC sheet material such PVC venetian blind slats, through use of a computer hardware and CAD/CAM and computer color-matching software. The process, which is for ink-printing the outer surface of a siliconeless PVC sheet (preferably a blind slat) inside a work room, comprises the following steps: (a) purging the atmosphere of the work room from substantially all airborne silicone particles and maintaining the purged atmosphere at a positive pressure relative to air pressure; (b) heating the slat for a duration and at a temperature level sufficient to fully ink prime the slat outer surface; (c) oxydizing the primed slat outer surface; (d) screen coating the slat outer surface with an ink, this ink being of the type curable under the action of an ultra-violet radiation; and (e) curing the ink-coated slat by submitting the latter to an electromagnetic radiation at a radiation intensity and duration sufficient to completely set the ink onto the slat outer surface; wherein the ink-coated slat outer surface becomes highly scratch-resistant.

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