Decorative film with hot melt adhesive layer

• US 5,981,009 A
• Filed: 01/30/1997
• Issued: 11/09/1999
• Est. Priority Date: 01/30/1997
• Status: Expired due to Fees

• Current Assignee: Leonhard KURZ Stiftung & Company KG
• Original Assignee: Leonhard KURZ Stiftung & Company KG
• Inventors: Miller, Robert E., Iacono, Charles A.
• Primary Examiner(s): Ahmad, Nasser
• Application Number:
  US08/791,303
• Time in Patent Office: 1,013 Days
• Field of Search: 428/40.1, 428/41.5, 428/41.6, 428/41.7, 428/41.8, 428/42.1, 428/195, 428/204, 428/914, 427/147
• US Class Current: 428/40.1
• CPC Class Codes: B44C 1/1712 Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
• CPC Class Codes: B44C 1/1729 Hot stamping techniques
• CPC Class Codes: Y10S 428/914 Transfer or decalcomania
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1462 Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
• CPC Class Codes: Y10T 428/1467 Coloring agent
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24876 Intermediate layer contains particulate material [e.g., pigment, etc.]

Abstract

A decorative film is provided which has a heat-activatable transfer layer for affixation to a substrate to be decorated. The film includes a carrier sheet and a transfer layer in contact with the carrier sheet. The transfer layer includes a decorative layer and a heat-activatable adhesive layer for affixing the film to a substrate, wherein the heat-activatable adhesive layer is a solidified layer of a molten adhesive formulation. In a method of making such a decorative film, a thermoplastic adhesive formulation is heated to a temperature in excess of the softening temperature of the thermoplastic in the formulation to form a molten adhesive formulation, which is then applied to a decorative layer on the carrier sheet thereby forming a transfer layer having a transfer surface. The second surface of the carrier sheet and the transfer surface are chilled.

Claims

1. A decorative film having a heat-activatable transfer layer for affixation to a substrate to be decorated, comprising:

(a) a carrier sheet; and

(b) a transfer layer in contact with the carrier sheet, the transfer layer comprising a decorative layer and a heat-activatable adhesive layer for affixing the film to a substrate, the decorative layer being situated between the carrier sheet and the heat-activatable adhesive layer, wherein the heat-activatable adhesive layer is a solidified layer of a molten adhesive formulation which is solvent-free.

2. The decorative film according to claim 1, wherein the molten adhesive formulation comprises a polyamide copolymer.

3. The decorative film according to claim 2, wherein the molten adhesive formulation further comprises a filler selected from the group consisting of pigments and extenders.

4. The decorative film according to claim 3, wherein the filler is a pigment.

5. The decorative film according to claim 3, wherein the molten adhesive formulation comprises from about 1 to about 99.9% by weight of the polyamide copolymer and from about 99 to about 0.1% by weight of the filler.

6. The decorative film according to claim 3, wherein the molten adhesive formulation comprises from about 60 to about 98% by weight of the polyamide copolymer and from about 40 to about 2% by weight of the filler.

7. The decorative film according to claim 3, wherein the molten adhesive formulation comprises from about 65 to about 95% by weight of the polyamide copolymer and from about 35 to about 5% by weight of the filler.

8. The decorative film according to claim 1, wherein the decorative layer comprises a base coat in contact with the adhesive layer, a print layer in contact with the base coat and a protective coating in contact with the print layer, wherein the protective coating is situated between the print layer and the carrier sheet.

9. The decorative film according to claim 8, wherein the decorative layer further comprises a patterned marking layer situated between the protective coating and the carrier sheet.

10. The decorative film according to claim 8, wherein the decorative layer further comprises a patterned marking layer situated between the print layer and the protective coating.

11. A decorative film having a heat-activatable adhesive layer for affixation to a substrate to be decorated, comprising:

(a) a carrier sheet; and

(b) a transfer layer in contact with the carrier sheet, the transfer layer comprising a decorative layer and a heat-activatable adhesive layer for affixing the film to a surface, the decorative layer being situated between the carrier sheet and the heat-activatable adhesive layer, wherein the heat-activatable adhesive layer is a solidified layer of a molten adhesive formulation which is solvent-free and which comprises from about 1 to about 99.9% by weight of a polyamide copolymer and from about 99 to about 0.1% by weight of a filler selected from the group consisting of pigments and extenders.