Method for applying and exposing coating or ink compositions on substrates to radiation and the product thereof

Patent metadata

Field	Value
Publication number	US-9751332-B2
Application number	US-201113993858-A
Country	US
Kind code	B2
Filing date	Dec 13, 2011
Priority date	Dec 13, 2010
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

The present invention describes a two-sided radiation exposure method including a step of applying a coating or ink composition on a surface of a nonporous substrate. The applied coating or ink composition surface of the nonporous substrate is exposed to radiation one or more times. In addition, a non-applied surface of the nonporous substrate is exposed to radiation one or more times. The two-sided radiation exposure method improves adhesion and/or curing properties of the coating or ink composition applied on the nonporous substrate. The present invention also describes a radiation exposed, nonporous substrate with a coating or ink composition applied on a surface thereof produced by the steps of the above-mentioned method.

First claim

What is claimed is:

1. A method for applying a coating or ink composition on a nonporous substrate comprising:
applying said coating or ink composition onto a first surface of said nonporous substrate;
exposing said applied first surface of said nonporous substrate to radiation one or more times; and
exposing a second surface of said nonporous substrate to radiation one or more times; wherein said nonporous substrate is an unprimed or non-chemically treated substrate.

2. The method according to claim 1 , wherein said applied first surface is exposed to radiation before said second surface.

3. The method according to claim 1 , wherein said second surface is exposed to radiation before said applied first surface.

4. The method according to claim 3 , wherein said composition has less than 2,000 ppb of extractable monomers from a surface area of 51 cm when immersed in 30 ml of a food simulant liquid after both said first and second surfaces are exposed to actinic radiation.

5. The method according to claim 1 , wherein said applied first surface is subject to less aggregate exposure of radiation than said second surface.

6. The method according to claim 1 , wherein said nonporous substrate is transparent or semi-transparent.

7. The method according to claim 1 , wherein said nonporous substrate is selected from: polypropylene, polyethylene, polyethylene terephthalate, polyethylene terephthalate glycol, polyvinyl chloride or mixtures thereof.

8. The method according to claim 1 , wherein said ink composition is an energy-curable ink.

9. The method according to claim 8 , wherein said energy-curable ink comprises one or more thermoplastic acrylic inert resins.

10. The method according to claim 1 , wherein greater than or equal to about 95% of said coating or ink composition adheres to said substrate after both said first and second are exposed to radiation.

11. The method according to claim 10 , wherein greater than or equal to about 99% of said coating or ink composition adheres to said substrate.

12. The method according to claim 11 , wherein greater than or equal to about 99.99% of said coating or ink composition adheres to said substrate.

13. A radiation exposed, nonporous substrate with a coating or ink composition applied thereon produced by the steps:
applying said composition onto a first surface of said nonporous substrate;
exposing said applied first surface of said nonporous substrate to radiation one or more times; and
exposing a second surface of said nonporous substrate to radiation one or more times; wherein said nonporous substrate is an unprimed or non-chemically treated substrate.

14. The radiation exposed, nonporous substrate according to claim 13 , wherein said applied first surface is exposed to radiation before said second surface.

15. The radiation exposed, nonporous substrate according to claim 14 , wherein said second surface is exposed to radiation before said applied first surface.

16. The radiation exposed, nonporous substrate according to claim 15 , wherein said composition has less than 2,000 ppb of extractable monomers from a surface area of 51 cm when immersed in 30 ml of a food simulant liquid.

17. The radiation exposed, nonporous substrate according to claim 13 , wherein said applied first surface is subject to less aggregate exposure of radiation than said second surface.

18. The radiation exposed, nonporous substrate according to claim 13 , wherein said nonporous substrate is transparent or semi-transparent.

19. The radiation exposed, nonporous substrate according to claim 13 , wherein said nonporous substrate is selected from: polypropylene, polyethylene, polyethylene terephthalate, polyethylene terephthalate glycol, polyvinyl chloride or mixtures thereof.

20. The radiation exposed, nonporous substrate according to claim 13 , wherein said composition is an energy-curable ink.

21. The radiation exposed, nonporous substrate according to claim 13 , wherein said energy-curable ink comprises one or more thermoplastic acrylic inert resins.

22. The radiation exposed, nonporous substrate according to claim 13 , wherein greater than or equal to about 95% of said composition adheres to said substrate after both said first and second surfaces are exposed to radiation.

23. The radiation exposed, nonporous substrate according to claim 22 , wherein greater than or equal to about 99% of said composition adheres to said substrate.

24. The radiation exposed, nonporous substrate according to claim 23 , wherein greater than or equal to about 99.99% of said composition adheres to said substrate.

25. Packaging materials selected from plastic materials, food-grade materials, cosmetic materials, industrial coating materials and pharmaceutical materials comprising the radiation exposed nonporous substrate according to claim 13 .

Assignees

• Zhang Yuemei
• Adhikari Prasad K
• Sun Chemical Corp

Inventors

• Zhang Yuemei
• Adhikari Prasad K

Classifications

• B05D3/067

  Curing or cross-linking the coating · CPC title

• B05D3/007

  After-treatment · CPC title

• B41J11/00214

  using UV radiation · CPC title

• B05D5/10 Primary

  to obtain an adhesive surface · CPC title

• B41M7/009

  using thermal means, e.g. infrared radiation, heat · CPC title