Method and apparatus for controlling coating width

Details Method and apparatus for controlling coating width Method and apparatus for controlling coating width

2007-11-06

2007-11-06

Lamb, Brenda A. (Department: 1734)

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

C118S410000, C118S419000, C118SDIG020

Reexamination Certificate

active

10760794

ABSTRACT:
A method of applying a material to a moving substrate is disclosed. The method includes providing a die comprising a die body having a cavity therein, wherein the cavity is in fluid communication with an applicator slot. The die is then oriented such that the applicator slot is positioned so as to dispense the material onto the substrate. The material is introduced into the die cavity such that the material is dispensed onto the substrate through the applicator slot. At least one end of the slot includes means for preventing lateral widening of the dispensed material. In another embodiment, means will be disposed at both ends of the applicator slot. The method is particularly useful when the capillary number characteristic of the coating process is less than 0.5

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