Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1982-12-06
1984-11-06
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
118419, B05C 502
Patent
active
044805837
ABSTRACT:
An extrusion coating apparatus continuously extrudes a coating solution from a top portion of a slot and applies the same in the form of a coat on the surface of a flexible support which is continuously run along a back edge surface and a doctor edge surface of the apparatus. The apparatus is characterized in that the doctor edge has a triangular cross-section. In addition, assuming that the downstream end of the doctor edge is indicated by A, the vertex of the triangular cross-section is indicated by B, the outlet end of the slot is indicated C, the outlet end of the slot on the back edge surface is indicated by D, and the upstream end is indicated by E, the outlet end of the slot on the back edge surface D is disposed at a position which satisfies the following equation: .angle.ABC<.angle.ABD<180.degree.. Finally, the angle between the tangent line of the back edge surface at D and the line A-B is greater than that between the line B-D and the line A-B, and the back edge surface does not extend beyond the tangent line to the base surface.
REFERENCES:
patent: 2464771 (1949-03-01), Van Guelpen
patent: 2774327 (1956-12-01), Saint-Hilaire
patent: 4299186 (1981-11-01), Pipkin et al.
patent: 4386998 (1983-06-01), McIntyre et al.
Noda Shinji
Tanaka Yasunori
Fuji Photo Film Co. , Ltd.
McIntosh John P.
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