Vacuum coating box

Details Vacuum coating box Vacuum coating box

B - Operations, Transporting

05

C

32/25

B05C 3/18 (2006.01) B05C 11/04 (2006.01) B05C 11/10 (2006.01)

Patent

CA 1110843

ABSTRACT A coating composition is applied to a paper web while the web passes over an opening in a box in which a partial vacuum is maintained. The opening is divided into two sections by means of a support member disposed perpendicular to the direction of travel of the web. The coating composition is applied to the web in the downstream section of the opening, and the up- stream section is considerably greater in area than the downstream section to create a tension on the web and thereby eliminate unstretched areas in the web.

296839

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