Extrusion type coating head

Details Extrusion type coating head Extrusion type coating head

1995-03-22

1997-01-07

Lamb, Brenda A.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118419, B05C 302

Patent

active

055912664

ABSTRACT:
In an extrusion type coating head according to the present invention, a center line average roughness (Ra) of an inner wall surface of a pocket is made in a predetermined range of 3.5 .mu.m or less and preferably a curvature part is provided, in the part where a surface of a slit joins to a surface of the pocket, which has the radius of curvature R of within a predetermined range. By these configurations, an easiness of cleaning in the pocket of the extrusion type coating head which is difficult to be cleaned is remarkably improved in particular, the rate of operation is improved, labor is saved, and adverse effects are prevented that might be brought by insufficient cleaning on the product coating such as streak generated on the coating surface and thickness fluctuation in the coating.

REFERENCES:
patent: 5173119 (1992-12-01), Watanabe et al.
patent: 5336322 (1994-09-01), Tobisawa et al.
patent: 5397600 (1995-03-01), Shibata et al.
Patent Abstracts of Japan, No. 58 (C-1028), JP-4-281876, Oct. 7, 1992.

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