Urethane based coating applied in-line for improved ink adhesion
First Claim
1. A printable, coated, biaxially oriented film, comprising:
- (a) a polymeric base film having a predominant polymer, and a first and a second side, said predominant polymer being polypropylene; and
(b) a urethane coating on said first side, said coating having been applied to said base film between a machine direction orientation and a transverse direction orientation of a two step tentering operation.
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Accused Products
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.
62 Citations
23 Claims
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1. A printable, coated, biaxially oriented film, comprising:
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(a) a polymeric base film having a predominant polymer, and a first and a second side, said predominant polymer being polypropylene; and (b) a urethane coating on said first side, said coating having been applied to said base film between a machine direction orientation and a transverse direction orientation of a two step tentering operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification