Curtain coater slide hopper with improved transition profile and

Details Curtain coater slide hopper with improved transition profile and Curtain coater slide hopper with improved transition profile and

1993-06-07

1995-03-21

Beck, Shrive

Coating processes

Falling curtain of coating material utilized

118324, 118DIG4, B05D 130

Patent

active

053993853

ABSTRACT:
The present invention minimizes the effects of capillary and inertial forces on the film profile for a slide hopper, thereby making the film profile smooth and predictable even when the transition section is short. The invention enables improved coating uniformity over the main width of the coating and particularly at the edges. The slide hopper has a slide surface and a lip surface, with a transition surface connecting the two surfaces. The transition surface profile has a variable curvature that is zero at the first end, increases continuously to a maximum at point between the first and second ends and decreases continuously to zero at the second end.

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