Urethane based coating applied in-line for improved ink adhesion
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United States of America Patent
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May 27, 2008
Grant Date -
Sep 30, 2004
app pub date -
Mar 18, 2004
filing date -
Mar 25, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A printable, coated, biaxially oriented film is provided that includes a polypropylene base film having a first and a second side, and a urethane coating on the first side. The coating has been applied to the base film between a machine direction orientation and a transverse direction orientation of a two step tentering operation. A method for manufacturing the film is also provided which includes the steps of forming a base film of a substantially uniform film layer of polypropylene, uniaxially orienting the base film by machine direction stretching, applying a coating of urethane to a first side of the uniaxially oriented base film, and biaxially orienting the coated film by stretching the film transversely to the machine direction.
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