Apparatus for coating a web with coating mix

Details Apparatus for coating a web with coating mix Apparatus for coating a web with coating mix

D - Textiles, Paper

21

H

32/39

D21H 23/46 (2006.01) B05C 3/18 (2006.01) B05C 11/04 (2006.01) D21H 23/36 (2006.01)

Patent

CA 1312462

Abstract of the Disclosure This invention describes a short-dwell coater for coating a web with coating mix against a rotating backing roll. The coater comprises a support structure, a feeder means adapted to the front lip for feeding the coating mix into an application zone formed between the backing roll and the support structure, and an actual doctor blade, adapted into the support structure to press against the web, with which blade the excess coating mix passing over from the application zone can be removed. According to the invention, a separate predoctoring blade is adapted at a short distance before the actual doctor blade in the machine direction of the web for smoothing out disturbances in the coating mix flow before the mix proceeds up to the actual doctor blade.

588650

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