System and method for applying a desired, protective finish to p

Details System and method for applying a desired, protective finish to p System and method for applying a desired, protective finish to p

1994-12-22

1996-05-28

Beck, Shrive

Coating processes

With pretreatment of the base

Heating or drying pretreatment

427359, 427361, 427365, 118101, 118118, 118410, B05D 126, B05D 312

Patent

active

055209580

ABSTRACT:
A system and method are provided for applying a desired protective finish to a web of printed label stock. The web of printed label stock is moved through a coating station, where a layer of hot melt varnish is extruded onto the web of printed label stock. Then, the web of printed label stock is transferred to a working station in an environment which causes the layer of varnish to at least partially solidify to a predetermined state as it reaches the working station. At the working station, the layer of varnish is worked to a desired finish. Preferably the web is carried through a nip formed by a pair of rolls, including a highly polished chrome roll which contacts the layer of varnish and works the layer of varnish to a glossy finish. After the layer of varnish is worked to a glossy finish, the web is directed through a finishing station, where the glossy finish is fixed in the layer of varnish, and the web is conditioned to a state in which it can be processed as a web of finished label stock.

REFERENCES:
patent: 1792414 (1931-02-01), Cole
patent: 3349749 (1967-10-01), Utschig
patent: 3385721 (1968-05-01), Leach
patent: 4372244 (1983-02-01), Rebel
patent: 4490418 (1984-12-01), Yoshida
patent: 4612152 (1986-09-01), Kawabata et al.
patent: 4805544 (1989-02-01), McIntyre
patent: 4815413 (1989-03-01), Kota
patent: 4848268 (1989-07-01), Sollinger et al.
patent: 5033403 (1991-07-01), Mladota
patent: 5039560 (1991-08-01), Durgin et al.
Hawley, ed., The Condensed Chemical Dictionary, 1981, p. 1080.

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