A short dwell coater apparatus for coating a moving web

Details A short dwell coater apparatus for coating a moving web A short dwell coater apparatus for coating a moving web

B - Operations, Transporting

05

C

B05C 1/08 (2006.01) B05C 1/14 (2006.01) B05C 3/12 (2006.01) B05C 11/04 (2006.01) D21H 23/36 (2006.01)

Patent

CA 2047695

A coater apparatus (10A) is disclosed for applying a primary flow (36A) of coating material to a moving web of paper (WA). The apparatus (10A) includes a frame (12A) and a first and a second guide roll (38, 40) rotatably supported by the frame (12A). The first and second guide rolls (38, 40) rotate respectively around first and second rotational axes (42, 44). The second axis of rotation (44) is disposed spaced and parallel relative to the first axis (42). A backing blanket (46) extends around and is guided by the guide rolls (38, 40). The blanket (46) defines an endless loop around the guide rolls (38, 40) such that the web of paper (WA) is supported by the blanket (46) during movement of the web (WA) from the first guide roll (38) to the second guide roll (40). The blanket (46) is disposed between the web (WA) and the guide rolls (38, 40). A short dwell coater (14A) is disposed adjacent to the web (WA) and between the guide rolls (38, 40) for applying the primary flow (36A) of coating material to the web (WA). While the web (WA) supported by the blanket (46) is moving between the guide rolls (38, 40), the web (WA) is moving in a plane (P) disposed tangentially relative to the guide rolls (38, 40) such that secondary flows within the coater (14A) are inhibited.

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