Capillary device for lacquering or coating plates or disks
First Claim
1. A method for coating a series of plates substrates sequentially, said method comprising the steps of:
- a) providing a channel and filling said channel with a liquid coating medium;
b) arranging in said channel two parallel means for forming therebetween a capillary slot;
c) immersing said two parallel means in the liquid coating medium contained in said channel;
d) decreasing a distance between said parallel means to a capillary width to form said capillary slot and to press an amount of the liquid coating medium out of said capillary slot;
e) advancing a plate with a surface to be coated facing said capillary slot across said capillary slot;
f) depositing a film of the liquid coating medium on the plate by a capillary effect of said capillary slot and by adhesion;
g) after said step of depositing enlarging a distance between said parallel means to cancel the capillary effect of said capillary slot in order to preserve the liquid coating medium; and
h) repeating the steps d) through g).
6 Assignments
0 Petitions
Accused Products
Abstract
A device for coating a plate has an open channel being open in an upward direction and a device for supplying a liquid to the open channel. The liquid in the open channel forms an convexly curved portion projecting upwardly from the open channel. A device for transporting a plate at a close distance past the open channel is provided, with which a surface to be coated of the plate facing the convexly curved portion of the liquid is guided such that a thin film of the liquid is deposited on the surface to be coated by adhesion effects. Another device for lacquering or coating plates or disks has a capillary slot that is filled with a liquid coating medium. The plate to be coated is advanced across the capillary slot with the surface to be coated facing downwardly so that due to the capillary effect a thin layer is deposited on the surface of the plate.
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Citations
8 Claims
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1. A method for coating a series of plates substrates sequentially, said method comprising the steps of:
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a) providing a channel and filling said channel with a liquid coating medium; b) arranging in said channel two parallel means for forming therebetween a capillary slot; c) immersing said two parallel means in the liquid coating medium contained in said channel; d) decreasing a distance between said parallel means to a capillary width to form said capillary slot and to press an amount of the liquid coating medium out of said capillary slot; e) advancing a plate with a surface to be coated facing said capillary slot across said capillary slot; f) depositing a film of the liquid coating medium on the plate by a capillary effect of said capillary slot and by adhesion; g) after said step of depositing enlarging a distance between said parallel means to cancel the capillary effect of said capillary slot in order to preserve the liquid coating medium; and h) repeating the steps d) through g). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification