Processes and apparatus for coating paper and cardboard and...

Details Processes and apparatus for coating paper and cardboard and... Processes and apparatus for coating paper and cardboard and...

B - Operations, Transporting

05

C

117/105

B05C 11/04 (2006.01)

Patent

CA 1095345

IMPROVEMENT TO PROCESSES AND APPARATUS FOR COATING PAPER AND CARDBOARD AND AN APPARATUS FOR PERFORMING THEM Abstract of the Disclosure The thickness of the coating of an aqueous compo- sition deposited in excess on a continuous strip of paper or cardboard supported by the lateral surface of a cylinder is regulated and regularized by removing the excess substance by scraping by means of at least two successively acting blades. The process makes it possible to obtain coatings of regular thickness, which are free from streaks and furrows, corresponding to quantities of dry material which are generally below 15 g/m2 to as low as 5 g/m2 without decreasing the viscosity of the coating baths.

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