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

1989-01-27

1990-10-23

Willard, Hoag

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118413, 118419, B05C 312

Patent

active

049643649

ABSTRACT:
This publication 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 form 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.

REFERENCES:
patent: 4398494 (1983-08-01), Alheld
patent: 4534309 (1985-08-01), Damrau et al.
patent: 4594963 (1986-06-01), Krautzberger
patent: 4688516 (1987-08-01), Sommer

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