Coating apparatus – With heat exchange – drying – or non-coating gas or vapor... – With solid heat exchange means contacting work
Patent
1995-12-18
1997-07-08
Lamb, Brenda A.
Coating apparatus
With heat exchange, drying, or non-coating gas or vapor...
With solid heat exchange means contacting work
118 69, B05C 1300
Patent
active
056456395
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.
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Hawley, ed., The Condensed Chemical Dictionary, 1981, p. 1080.
Doesburg Eric John
Zirkle Marc L.
Lamb Brenda A.
Nordson Corporation
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