Printable film

• US 8,663,760 B2
• Filed: 02/17/2011
• Issued: 03/04/2014
• Est. Priority Date: 01/25/1996
• Status: Expired due to Fees

• Current Assignee: Innovia Films Limited (Innovia Films)
• Original Assignee: Innovia Films Limited (Innovia Films)
• Inventors: Servante, Alastair Hugh, Power, Gary, Marshall, Colin
• Primary Examiner(s): Raudenbush, Ellen S
• Application Number:
  US13/029,788
• Publication Number:
  US 20110201736A1
• Time in Patent Office: 1,111 Days
• Field of Search: 428/32.71, 428/325, 428/327, 430/270.1, 430/286.1
• US Class Current: 428/35.7
• CPC Class Codes: B41M 5/504 Backcoats
• CPC Class Codes: B41M 5/506 Intermediate layers
• CPC Class Codes: B41M 5/508 Supports
• CPC Class Codes: B41M 5/52 Macromolecular coatings
• CPC Class Codes: B41M 5/5254 characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
• CPC Class Codes: B41M 5/5281 Polyurethanes or polyureas
• CPC Class Codes: B41M 7/0081 using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
• CPC Class Codes: C08J 2451/00 Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds for ABS polymers C08J2455/02; Derivatives of such polymers
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/24893 including particulate material
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/254 Polymeric or resinous material
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/2848 : Three or more layers
• CPC Class Codes: Y10T 428/31551 : Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31573 : Next to addition polymer of ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/31667 : Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31678 : Of metal
• CPC Class Codes: Y10T 428/31699 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31725 : Of polyamide
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31797 : Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31855 : Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31906 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31913 : Monoolefin polymer
• CPC Class Codes: Y10T 428/31928 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31938 : Polymer of monoethylenically unsaturated hydrocarbon
• CPC Class Codes: Y10T 428/31993 : Of paper
• CPC Class Codes: Y10T 442/20 : Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer

Abstract

The invention relates to printable films comprising a substrate and at least a surface layer, said layer covering at least one face of said substrate and comprising a water-dispersible polymer and an ethylenically unsaturated compound; to a process for the manufacture of such films; to printed films and especially to printed labels obtained from such printable films.

Claims

1. A printable surface layer, comprisingto 98% by weight of an aliphatic polyester based polyurethane;

2 to 90% by weight of an ethylenically unsaturated compound, and

further comprising a crosslinker,

wherein said aliphatic polyester based polyurethane is not a polyurethane acrylate, and

wherein said ethylenically unsaturated compound is miscible with said aliphatic polyester based polyurethane in an aqueous phase in a wet stage during production of said printable surface layer such that said ethylenically unsaturated compound acts as a plasticiser for said surface layer, and wherein said printable surface layer does not contain an additional polymerization photoinitiator.

2. The printable surface layer of claim 1, wherein said ethylenically unsaturated compound comprises an ester derivative of an α

,β

-ethylenically unsaturated acid with a polyol or alkoxylated polyol.

3. The printable surface layer of claim 2, wherein said α

,β

-ethylenically unsaturated acid is selected from the group consisting of acrylic acids, methacrylic acids, itaconic acids, citraconic acids, maleic acids and fumaric acids.

4. The printable surface layer of claim 3, wherein said α

,β

-ethylenically unsaturated acid is an acrylic acid or a methacrylic acids.

5. The printable surface layer of claim 1, wherein said ethylenically unsaturated compound comprises polyfunctional acrylates.

6. The printable surface layer of claim 1, wherein said crosslinker is selected from the group consisting of isocyante, epoxy, aziridine and silane derivatives.

7. The printable surface layer of claim 1, wherein said crosslinker is an aziridine-based crosslinker.

8. The printable surface layer of claim 1, further comprising a silica dispersion.

9. The printable surface layer of claim 1, further comprising an anti-blocking additive.

10. The printable surface layer of claim 1, further comprising a pigment.

11. The printable surface layer of claim 1, further comprising an antistatic agent.

12. The printable surface layer of claim 1, wherein said ethylenically unsaturated compound comprises 1 to 10 ethylenical bonds per molecule.

13. The printable surface layer of claim 12, wherein said ethylenically unsaturated compound comprises 2 to 5 ethylenical bonds per molecule.

19. The printable surface layer of claim 1, wherein said aliphatic polyester based polyurethane is an isocyanate-terminated polyurethane.

22. The printable surface layer of claim 2, wherein the surface layer comprises the ethylenically unsaturated compound in the form of an acrylate in an amount from 2% to 15% by dry weight.

14. A printable surface layer, comprisingto 98% by weight of a urethane polymer;

2 to 90% by weight of an ethylenically unsaturated compound; and

a silicate dispersion,

wherein said urethane polymer is not a polyurethane acrylate, wherein said ethylenically unsaturated compound is miscible with said urethane polymer in an aqueous phase in a wet stage during production of said printable surface layer such that said ethylenically unsaturated compound acts as a plasticiser for said surface layer, and wherein said printable surface layer does not contain an additional polymerization photoinitiator.

15. The printable surface layer of claim 14, further comprising a crosslinking agent.

16. The printable surface layer of claim 15, wherein said crosslinking agent is an aziridine derivative.

17. A printable surface layer, comprising:

an aliphatic polyester based polyurethane polymer;

an ethylenically unsaturated compound;

a crosslinking agent; and

a silicate dispersion,

wherein said aliphatic polyester based polyurethane polymer is not a polyurethane acrylate, and

wherein said layer does not contain an additional polymerization photoinitiator, wherein said ethylenically unsaturated compound is miscible with said aliphatic polyester based polyurethane in an aqueous phase in a wet stage during production of said printable surface layer such that said ethylenically unsaturated compound acts as a plasticiser for said surface layer.

18. The printable surface layer of claim 17, wherein said crosslinking agent is an aziridine derivative.

20. A printable surface layer, comprisingto 98% by weight of an aliphatic isocyanate-terminated polyurethane;

and

2 to 15% by dry weight of an ethylenically unsaturated compound,

wherein said ethylenically unsaturated compound is miscible with said aliphatic polyester based polyurethane in an aqueous phase in a wet stage during production of said printable surface layer such that said ethylenically unsaturated compound acts as a plasticiser for said surface layer, and wherein said printable surface layer does not contain an additional polymerization photoinitiator.

21. The printable surface layer of claim 20, wherein said isocyanate-terminated polyurethane is formed by reacting at least:

(a) an excess of an organic polyisocyanate; and

(b) an organic compound containing at least two isocyanate-reactive groups and an isocyanate-reactive compound selected from the group consisting of;

(i) anionic salt functional groups;

(ii) acid groups subsequently converted to such anionic salt functional groups, or

(iii) non-ionic groups; and

(iv) an active hydrogen-containing chain extender.