Notched doctored single kiss roll applicator

Details Notched doctored single kiss roll applicator Notched doctored single kiss roll applicator

1987-11-02

1989-03-21

Bell, Janyce A.

Coating processes

Nonuniform coating

Striping

118204, 118261, 427288, 427359, 427360, 427428, B05D 500, B05D 312, B05C 100

Patent

active

048142042

ABSTRACT:
An apparatus for applying spaced apart discontinuous stripes of a fluid to the surface of a moving web. The apparatus includes a rotating applicator roll partially immersed in a bath of the fluid. A notched doctor blade in contact with the surface of the roll removes fluid from the surface of the roll except in the region of the notches to form spaced apart circumferential beads of the fluid on the surface of the roll. The moving web partially wraps the applicator roll where the beads are formed, but is travelling between 20 to 200 times the speed of the surface of the applicator roll, which results in a relatively even distribution of the fluid, in the form of a discontinuous stripe, on the surface of the web.

REFERENCES:
patent: 2102984 (1937-12-01), Von Hoffe
patent: 2754796 (1956-07-01), Faulkner et al.

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