Hot stamping glass

• US 5,391,247 A
• Filed: 05/06/1994
• Issued: 02/21/1995
• Est. Priority Date: 01/24/1992
• Status: Expired due to Fees

• Current Assignee: DECO Patents Incorporated
• Original Assignee: Revlon Consumer Products Corporation (Ronald Owen Perelman, MBA)
• Inventors: Patel, Bhupendra, Kamen, Melvin E., Bernstein, Phillip
• Primary Examiner(s): Simmons, David A.
• Assistant Examiner(s): Rainwater, Charles
• Application Number:
  US08/239,262
• Time in Patent Office: 291 Days
• Field of Search: 156/233, 156/234, 156/235, 156/239, 156/240, 156/241, 156/277, 156/273.3, 156/273.5, 428/914, 428/195, 428/200, 428/201, 428/285, 430/128
• US Class Current: 156/233
• CPC Class Codes: B41M 1/34 on glass or ceramic surfaces ink-jet printing on glass or ceramic surfaces B41M5/00
• CPC Class Codes: B41M 7/0081 using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
• CPC Class Codes: B41M 7/009 using thermal means, e.g. infrared radiation, heat
• CPC Class Codes: B44C 1/14 Metallic leaves or foils, e.g. gold leaf
• CPC Class Codes: B44C 1/1729 Hot stamping techniques
• CPC Class Codes: C03C 17/007 containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
• CPC Class Codes: C03C 17/32 with synthetic or natural resins C03C17/30 takes precedence
• CPC Class Codes: C03C 17/38 at least one coating being a coating of an organic material
• CPC Class Codes: C03C 2217/485 Pigments
• CPC Class Codes: C08G 59/24 carbocyclic
• CPC Class Codes: C08L 2666/18 Polyesters or polycarbonates according to C08L67/00 - C08L69/00; Derivatives thereof
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C09D 11/101 Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
• CPC Class Codes: Y10S 428/914 Transfer or decalcomania
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

A method for applying a decorative coating to glass and the resulting glass products.

Claims

1. A method of decorating a glass substrate with hot stamping foil consisting essentially of:

a) applying a radiation curable adhesive ink to the glass substrate in a predetermined design that leaves some areas of the glass ink-free, said ink being operable, when cured, to bond to glass and, when heated after curing to adhere to hot stamping foil,

b) curing the ink on the substrate by exposing it to the radiation by which it is curable, thereby bonding the ink design to the glass;

c) pressing a sheet of hot stamping foil against the substrate with a compress heated to a temperature sufficient to cause the foil to adhere to the heated, cured ink design but not to the ink-free areas of the glass; and

d) peeling the foil away from the substrate, thereby leaving behind a portion of the foil adhered to the adhesive ink design.

2. The method of claim 1 wherein the adhesive is an actinic radiation curable polymeric composition.

3. The method of claim 1 wherein the adhesive ink is an ultra-violet radiation curable polymeric composition.

4. The method of claim 3 wherein the polymeric composition comprises an acrylic resin.

5. The method of claim 4 wherein the adhesive ink comprises a silane coupling agent for glass.

6. The method of claim 5 wherein the adhesive ink comprises a radiation-activated photoinitiator that is operable to cure the polymeric composition upon exposure to the radiation to which the photoinitiator is sensitive.

7. The method of claim 6 wherein the photoinitiator is one that is activated by actinic radiation.

8. The method of claim 7 wherein the photoinitiator is one that is activated by ultraviolet radiation.

9. The method of claim 8 wherein the foil is gold hot stamping foil.

10. The method of claim 8 wherein the foil is silver hot stamping foil.

11. The method of claim 10 wherein the monomer is selected from the group consisting of isobornyl acrylate, aromatic urethane methacrylate, urethane acrylate, aromatic urethane acrylate, tetrahydrofurfuryl acrylate, acrylic acid, and hydroxyethylmethacrylate.

12. The method of claim 11 wherein the adhesive ink comprises an effective amount of a wetting agent.

13. The method of claim 12 wherein the adhesive ink comprises an effective amount of a leveling agent.

14. The method of claim 13 wherein the adhesive ink comprises an effective amount of a defoaming agent.

15. A method for decorating a glass substrate containing a decorated and nondecorated portion consisting essentially of:

a) painting a decoration on a glass substrate using a radiation curable adhesive ink,

b) curing the adhesive ink,

c) compressing a layer of hot stamping foil against the glass with a compress heated to at least 250°

F.,

d) whereby foil becomes adhesively adhered to the decoration but does not adhere to the nondecorated areas of the glass substrate;

e) removing the foil which is not adhered to the nondecorated glass substrate, to obtain a glass substrate where foil remains adhered only to the decoration.

16. The composition of claim 15 wherein the adhesive ink is an actinic-radiation-curable polymeric composition.

17. The method of claim 15 wherein the adhesive ink is an ultraviolet-radiation-curable polymeric composition.

18. The method of claim 17 wherein the polymeric composition comprises an acrylic resin.

19. The method of claim 18 wherein the adhesive ink comprises a silane coupling agent for glass.

20. The method of claim 19 wherein the adhesive ink comprises a radiation-activated photoinitiator that is operable to cure the polymeric composition upon exposure to the radiation to which the photoinitiator is sensitive.

21. The method of claim 20 wherein the photoinitiator is one that is activated by actinic radiation.

22. The method of claim 20 wherein the photoinitiator is one that is activated by ultraviolet radiation.

23. The method of claim 22 wherein the foil is gold hot stamping foil.

24. The method of claim 23 wherein the foil is silver hot stamping foil.

25. A method of decorating a glass substrate consisting essentially of:

a) applying a radiation curable adhesive ink in a predetermined design that leaves some areas of the glass ink-free, said ink being operable when cured to bond to glass and, after curing, to adhere to the hot melt adhesive layer of hot stamping foil that is a multilayer web comprised of a backing film carrier, a release coating, protective top coating, and a hot melt adhesive, in that order;

b) curing the ink on the substrate thereby bonding the ink design to the glass;

c) compressing a sheet of said hot stamping foil against the substrate with the hot melt adhesive layer being in contact with the substrate, using pressing means heated to a temperature sufficient to cause the hot melt adhesive layer to bond to the heated, cured ink design but not to the ink-free areas of the glass and to cause the release coating to release the backing film carrier in those locations where the hot melt adhesive bonds to the ink design; and

d) peeling the foil away from the substrate thereby leaving on the substrate only the portion of the foil that has bonded to the adhesive ink design.