Extrusion-type application device

Details Extrusion-type application device Extrusion-type application device

1990-03-23

1994-04-12

Jones, W. Gary

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118411, 118419, B05C 302, B05C 312

Patent

active

053022068

ABSTRACT:
An extrusion-type application device with which a liquid can be very rapidly applied to a carrier to form a thin layer thereon without causing streaking in the applied layer. The liquid is continuously expelled from the outside part of a slot to the surface of a flexible carrier continuously moving at a speed of 300 m/min or more along the surface of a back edge portion and the surface of a doctor edge portion so that the liquid is applied to the surface of the carrier. The surface of the doctor edge portion is curved, the inner longitudinal edge B of the surface of the back edge portion is located at the outlet of the slot so that the angle .theta..sub.1 between a tangent to the surface of the back edge portion at the inner longitudinal edge B and a tangent to the surface of the doctor edge portion at the outer longitudinal edge A of the surface of the doctor edge portion and the angle .theta..sub.2 between the former tangent and a tangent to the surface of the doctor edge portion and to the inner longitudinal edge B are as follows:

REFERENCES:
patent: 4681062 (1987-07-01), Shibata et al.
patent: 4854262 (1989-08-01), Chino et al.
patent: 4995339 (1991-02-01), Tobisawa et al.

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