Self Adhesive Film and Method to Minimize or Eliminate Print Defects in Such Film

Patent metadata

Field	Value
Publication number	US-2019118569-A1
Application number	US-201816171185-A
Country	US
Kind code	A1
Filing date	Oct 25, 2018
Priority date	Aug 31, 2011
Publication date	Apr 25, 2019
Grant date	—

Abstract

The present invention relates to a self adhesive ink jet printable polymer film. The film comprises a polymeric resin and a low surface energy additive that is in a substantially free form. The polymeric resin can be PVC, and the low surface energy additive can be silicone. The film comprising the low surface energy additive exhibits high print resolution and substantially uniform printing quality even after the print surface of the film has been in contact with a back surface of a release liner comprising residual silicone.

First claim

1 . A self adhesive print film comprising:
a polymeric print layer having an upper surface and a lower surface, the upper surface suitable for receiving printed indicia thereon; and an adhesive layer disposed on the lower surface of the polymeric print layer; wherein the polymeric print layer comprises a low surface energy additive distributed in the polymeric print layer; wherein the low surface energy additive is covalently bonded to a polymer material forming the polymeric print layer, wherein the polymeric print layer comprises from about 0.1 to about 10 wt. % of the low surface energy additive.

2 . (canceled)

3 . The self adhesive print film of claim 1 , wherein the polymeric print layer comprises from about 0.1 to about 5 wt. % of the low surface energy additive.

4 . (canceled)

5 . (canceled)

6 . The self adhesive print film of claim 1 , wherein the low surface energy material is selected from the group consisting of a silicone-containing material, a fluoropolymer, parylene, a polyamide, a polyimide, and-combinations thereof.

7 . The self adhesive print film of claim 1 , wherein the low surface energy additive is a silicone-containing material selected from the group consisting of a siloxane, a silane, and combinations thereof.

8 . The self adhesive print film of claim 7 , wherein the low surface energy additive is a siloxane of the formula:

where the R groups are each independently selected from the group consisting of an alkyl group, an aryl group, an alkenyl group, an alkinyl group, an acyl group, an alkoxy group, a glycidyl group, and combination thereof.

9 . The self adhesive print film of claim 7 , wherein the polymeric print layer comprises at least about 3 Atomic % of atomic Si at the upper surface of the polymeric print layer.

10 . The self adhesive print film of claim 7 , wherein the polymeric print layer comprises at least about 4 Atomic % of atomic Si at the upper surface of the polymeric print layer.

11 . The self adhesive print film of claim 7 , wherein the polymeric print layer comprises at least about 5 Atomic % of atomic Si at the upper surface of the polymeric print layer.

12 . The self adhesive print film of claim 7 , wherein the polymeric print layer comprises from about 3 to about 15 Atomic % of atomic Si at the upper surface of the polymeric print layer.

13 . The self adhesive print film of claim 1 , wherein the polymeric print layer comprises polyvinyl chloride.

14 . The self adhesive print film of claim 1 , wherein the adhesive layer has an upper surface and a lower surface, and wherein the self adhesive print film further comprises:
a release liner disposed over the lower surface of the adhesive layer.

15 . The self adhesive print film of claim 14 , wherein the release liner comprises a silicone release layer in contact with the lower surface of the adhesive layer, and a lower layer opposite the silicone release layer.

16 . The self adhesive print film of claim 1 , wherein the low surface energy additive has a surface energy of from about 5 dynes/cm to about 50 dynes/cm.

17 . The self adhesive print film of claim 1 , wherein the polymeric print layer has the characteristic of having a first dot area when a fresh film is printed at room temperature, and a second dot area when a film is printed after exposure to a temperature of 50 QC and a pressure of 2 psi for two weeks, the second dot area having a value within about 20% that of the first dot area.

18 . The self adhesive print film of claim 1 , wherein the polymeric print layer has the characteristic of having a first dot area when a fresh film is printed at room temperature, and a second dot area when a film is printed after exposure to a temperature of 50 QC and a pressure of 2 psi for two weeks, the second dot area having a value that is within about 15% of the first dot area.

19 . The self adhesive print film of claim 1 , wherein the polymeric print layer has the characteristic of having a first dot area when a fresh film is printed at room temperature, and a second dot area when a film is printed after exposure to a temperature of 50 QC and a pressure of 2 psi for two weeks, the second dot area having a value within about 10% of the first dot area.

20 . The self adhesive print film of claim 1 , wherein the polymeric print layer has the characteristic of having a first dot area when a fresh film is printed at room temperature, and a second dot area when a film is printed after exposure to a temperature of 50 QC and a pressure of 2 psi for two weeks, the second dot area having a value within about 0.1% to about 20% that of the first dot area.

21 . The self adhesive print film of claim 1 , wherein the polymeric print layer has the characteristic of having a first dot area when a fresh film is printed at room temperature, and a second dot area when a film is printed after exposure to a temperature of 50 QC and a pressure of 2 psi for two weeks, the second dot area having a value within about 1% to about 17% that of the first dot area.

22 . A method for improving the print resolution of a self adhesive film provided in a roll form, the method comprising:
providing a polymer print film layer having an upper surface for receiving a print media thereon, and a lower surface opposite the upper surface; providing an adhesive film layer on the lower surface of the polymer print film layer; and providing a release liner having an upper surface comprising a release coating thereon, and a lower surface, the lower surface of the release liner contacting the upper surface of the polymer print film layer when the self adhesive film is wound about itself into a roll; wherein the polymer print film layer comprises a low surface energy additive distributed in the polymer layer or disposed about the surface of the polymer layer.

23 . The method of claim 22 , wherein the low surface energy material is chosen from a silicone-containing material, a fluoropolymer, parylene, a polyamide, a polyimide, or a combination of two or more thereof.

24 . The method of claim 22 , wherein the low surface energy additive comprises a silicon-containing material chosen from a siloxane, a silane, or a combination thereof.

25 . The method of any of claim 24 , wherein the polymer print film layer comprises from about 3 to about 15 Atomic % of Si atoms at the upper surface of the polymer print film layer.

26 . The method of claim 24 , wherein the film exhibits a substantially uniform print resolution along the length and width of the film after the film is unwound from a roll form.

27 . The method of claim 22 , wherein the polymer print film layer comprises polyvinyl chloride.

28 . The method of claim 22 , wherein the upper surface exhibits a first print resolution prior to contacting the lower surface of the release liner, and a second print resolution subsequent to contacting the lower surface of the release liner, and the first print resolution is substantially the same as the second print resolution.

29 . The method of claim 28 , wherein the second print resolution does not change significantly with the time, temperature and pressure.

30 . The method of claim 22 , wherein the polymer print film layer has the character

Assignees

• Avery Dennison Corp

Inventors

• Srivatsan Nagarajan
• Mallya Prakash
• Chacko Sujith
• Ramsay Michael
• Wesseling Jolanda
• Miller Stuart

Classifications

• C08K5/5419

  containing at least one Si—C bond · CPC title

• C08L27/06 Primary

  Homopolymers or copolymers of vinyl chloride · CPC title

• C09J7/201

  characterised by the release coating composition on the carrier layer · CPC title

• C09J7/22

  Plastics; Metallised plastics · CPC title

• B41M5/508 Primary

  Supports · CPC title