IP Library › Granted Patent US 7,097,881
Granted Patent B2
US 7,097,881 · App. 10/339,306 · Granted Aug 29, 2006

Printed release liners

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Quick Facts
Patent No.
US 7,097,881
App. No.
10/339,306
Granted
Aug 29, 2006
Kind
B2
Abstract

Cationic radiation curable inks do not exhibit ghosting when coated over by a solvent, solventless and radiation curable silicone release coatings. When aggressive solvent borne adhesives are cast over the ink applied to a substrate, and peeled off after drying, no ghosting is observed. The result is the ability to print graphics onto a substrate and cover the substrate with a silicone release coating and a coat with an adhesive layer that retains acceptable clarity after removal of the release coating.

Claims (32)

1. A laminate, comprising:

a substrate,

an ink printed on said substrate,

a coaling placed over said printed substrate, wherein the ink comprises a cycloaliphatic resin, bisphenol epoxy resin, polyol, photoinitiator, bubble breaker, surfactant, wetting agent and pigment, and

wherein said coating is silicone.

2. The laminate of claim 1 , wherein said substrate is at least one member selected from the group consisting of nylon, PET, and a polyolefin.

3. A method for making a printed substrate, comprising:

providing a substrate,

printing said substrate with an ink comprising a cycloaliphatic resin, bisphenol epoxy resin, polyol, photoinitiator, bubble breaker, surfactant, wetting agent and pigment

curing said ink, and

applying a release coating to said printed substrate,

wherein said coating is applied by wire-wound rod, direct granite, offset gravure of fibril coating.

4. A method for making a printed substrate, comprising:

providing a substrate,

printing said substrate with an ink comprising a cycloaliphatic resin, bisphenol epoxy resin, polyol, photoinitiator, bubble breaker, surfactant, wetting agent and pigment

curing said ink, and

applying a coating to said printed substrate,

wherein said coating is silicone.

5. A method for making a printed substrate, comprising:

providing a substrate,

printing said substrate with an ink comprising a cycloaliphatic resin, bisphenol epoxy resin, polyol, photoinitiator, bubble breaker, surfactant, wetting agent and pigment

curing said ink,

applying a release coating to said printed substrate, and

pretreating said substrate prior to printing to enhance ink adhesion,

wherein said pretreating includes application of an ink adherable coating.

6. A method for making a printed substrate, comprising:

providing a substrate,

printing said substrate with an ink comprising a cycloaliphatic resin, bisphenol epoxy resin, polyol, photoinitiator, bubble breaker, surfactant, wetting agent and pigment

curing said ink,

applying a release coating to said printed substrate, and

pretreating said substrate prior to printing to enhance ink adhesion,

wherein said pretreating includes corona discharge treatment.