Apparatus and method for applying coating materials to individua

Coating processes – With post-treatment of coating or coating material – Vacuum or reduced pressure utilized

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4272084, 427211, 427395, 427428, 118224, 118227, 118258, 118249, 118236, 118239, 118 50, 118500, B05D 312, B05D 128, B05C 108, B05C 1300

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058515925

ABSTRACT:
Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).

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