Transferable enamel sheet and method and apparatus for its fabrication

• US 4,451,522 A
• Filed: 10/27/1981
• Issued: 05/29/1984
• Est. Priority Date: 10/29/1980
• Status: Expired due to Fees

• Current Assignee: Nordipa AG
• Original Assignee: Nordipa AG
• Inventors: de Vroom, Hubertus M.
• Primary Examiner(s): Hess, Bruce H.
• Application Number:
  US06/315,295
• Time in Patent Office: 945 Days
• Field of Search: 156/234, 156/240, 427/147, 428/40, 428/195, 428/201, 428/202, 428/207, 428/211, 428/343, 428/352, 428/354, 428/484, 428/486, 428/488, 428/537, 428/914, 428/203, 428/204, 428/353, 428/355 , 428/423.3, 428/447, 428/515
• US Class Current: 428/201
• CPC Class Codes: B05D 1/28 performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• CPC Class Codes: B44C 1/1737 Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff on a substrate unsuitable for direct deposition
• CPC Class Codes: B44C 1/1741 Decalcomanias provided with a layer being specially adapted to facilitate their release from a temporary carrier
• CPC Class Codes: Y10S 428/914 Transfer or decalcomania
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/2486 with outer strippable or release layer
• CPC Class Codes: Y10T 428/2839 with release or antistick coating
• CPC Class Codes: Y10T 428/2843 including a primer layer
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/31554 Next to second layer of polyamidoester
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31801 Of wax or waxy material
• CPC Class Codes: Y10T 428/31909 Next to second addition polymer from unsaturated monomers

Abstract

A transferable enamel sheet and the process for producing it is disclosed, which consists of a carrier film, a release layer applied thereon, a paint or enamel layer and an adhesive layer whereby a neutralization layer of wax-type consistency, preferably carnauba wax is applied to the release layer which is of the dimethyl-siloxane type (silicone). It is possible to preform two types of transferable enamel sheets. One of them is characterized by the adhesive layer between the neutralization layer and the paint or enamel layer. In this case the enamel paint itself is used as a removable coating, which can immediately be adhered to the surface to be touched up or painted. The other type is characterized by a buffer layer, preferably acrylic resin coated on the neutralization layer and by sharp defined enamel-characters being printed on the buffer layer with an adhesive layer on the outer side to transfer the characters to any surface.

Claims

1. In a transferable enamel sheet formed as a laminate including a carrier film, a silicone release layer applied thereon, an enamel layer and a pressure sensitive adhesive layer, the improvement of a neutralization layer of wax-like consistency applied to the release layer, said neutralization layer being comprised of a mixture of branched and unbranched hydrocarbon chains with an average length of 30 carbon atoms and a COOH group at several locations in the chain.

2. A transferable enamel sheet in accordance with claim 1 wherein said neutralization layer comprises a layer of carnauba wax.

3. A transferable enamel sheet in accordance with claim 1, wherein said carrier film comprises clear polyethylene terephthalate polyester film.

4. A transferable enamel sheet in accordance with any of claims 1, 2 or 3, wherein the composition of the adhesive layer comprises a solution capable of dissolving the neutralization layer.

5. A transferable enamel sheet in accordance with claim 4, wherein said enamel paint comprises automotive enamel paint.

6. A transferable enamel sheet in accordance with claim 5, wherein said enamel paint layer comprises acrylate resin-based automotive enamel paint and said adhesive layer comprises acrylate glue.

7. A transferable enamel sheet according to claim 1 wherein said adhesive and enamel layers both comprise cross-linking agents, and said cross-linking agents of said adhesive are co-reacted with the cross-linking agents of said enamel.

8. A transferable enamel sheet according of claim 7 wherein said cross-linking agents comprise isocyanate.

9. A transferable enamel sheet in accordance with claim 1 wherein said wax-type neutralization layer is covered by a buffer layer which is covered by the enamel layer covered by the adhesive layer.

10. A transferable enamel sheet in accordance with claim 9, wherein the enamel paint layer is applied to the buffer layer in the form of symbols, and the adhesive layer is applied to said enamel symbols in a shape which corresponds to that of the symbols.

11. A transferable enamel sheet in accordance with claim 10, wherein the adhesive is provided with a bonding primer for improved adherence to the enamel paint symbols, and the primer comprises a solution capable of dissolving the neutralization layer.

12. A transferable enamel sheet in accordance with claim 9, wherein the composition of the buffer layer is compatible with the composition of the enamel paint layer as well as the neutralization and silicone layer.

13. A transferable enamel sheet in accordance with claim 9 wherein said buffer layer is transparent.

14. A transferable enamel sheet in accordance with claim 9 wherein said buffer layer comprises an acrylic resin layer.

15. A transferable enamel sheet in accordance with claim 14, wherein said enamel paint layer comprises an acrylic resin-based enamel paint.

16. A transferable enamel sheet in accordance with claim 1, wherein said release layer comprises a long siloxane chain wherein the silicon atom is substituted with two methyl groups.

17. The transferable enamel sheet of claim 1 wherein the enamel layer is an enamel paint.

18. In a transferable enamel sheet formed as a liminate including a carrier film, a silicone release layer applied thereto, and enamel layer and a pressure sensitive adhesive layer, the improvement comprising a neutralization layer comprised of a mixture of branched and unbranched hydrocarbon chains, of wax-like consistency applied to said release layer.

19. In a transferable enamel sheet formed as a laminate including a carrier film, a release layer of silicone applied thereon, a layer of enamel paint, and a pressure sensitive adhesive layer, the improvement comprising a neutralization layer comprised of a mixture of branched and unbranched hydrocarbon chains of wax-like consistency applied to said release layer.

20. The transferable enamel sheet of claim 19, wherein said carrier film comprises a film of a synthetic resin.

21. In a transferable enamel sheet formed as a liminate including a carrier film, a release layer comprising a long siloxane chain wherein the silicon atom is substituted with two methyl groups, the release layer being applied thereon, a layer of an enamel paint and a pressure sensitive adhesive layer, the improvement comprising a neutralization layer comprised of a mixture of branched and unbranched hydrocarbon chains of wax-like consistency applied to said release layer.

22. The transferable enamel sheet of claim 21, wherein said carrier film comprises a film of a synthetic resin.