Multilayer body

Patent metadata

Field	Value
Publication number	US-9597825-B2
Application number	US-201013381595-A
Country	US
Kind code	B2
Filing date	Jun 18, 2010
Priority date	Jul 1, 2009
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

The invention relates to a multilayer body ( 100 ) for producing a decorated plastic article ( 50 ) having a surface relief ( 40 ). The multilayer body ( 100 ) comprises a relief film ( 1 ) with a first carrier film ( 2 ) and a structural layer ( 3 ), arranged on one side of the first carrier film ( 2 ). The multilayer body ( 100 ) also comprises a multilayer film ( 5 ) with a second carrier film ( 10 ) and at least one decorative layer ( 12, 14 ). The structural layer ( 3 ) is arranged here between the first carrier film ( 2 ) and the second carrier film ( 10 ). Furthermore, the multilayer body ( 100 ) has a film body ( 19 ) which comprises the relief film ( 1 ) and can be released from the at least one decorative layer ( 12, 14 ), and the at least one decorative layer ( 12, 14 ) is formed such that it can be deformed by the structural layer ( 3 ) formed as a stamped structure. The invention also relates to a process for producing such a multilayer body ( 100 ), and to two processes for producing a decorated plastic article ( 50 ) having a surface relief ( 40 ) by using such a multilayer body ( 100 ).

First claim

The invention claimed is:

1. A multilayer body for producing a decorated plastic article having a surface relief, the multilayer body comprising:
a relief film with a first carrier film, a structural layer arranged on one side of the first carrier film and an adhesive layer completely covering the structural layer, the adhesive layer being softer than the structural layer; and
a multilayer transfer film laminated to the relief film, the multilayer transfer film comprising a first portion facing the relief film and a second portion on a side of the first portion opposite the relief film, the first portion having a second carrier film facing the relief film and a release layer on a side of the second carrier film opposite the relief film and the second portion having at least one decorative layer, the at least one decorative layer being deformable by the structural layer upon molding of the decorated plastic article,
wherein the structural layer of the relief film is arranged between the first carrier film of the relief film and the second carrier film of the multilayer transfer film, and
wherein the structural layer is formed as a stamped structure for deforming the at least one decorative layer during molding of the decorated plastic article, and
wherein, after molding, the first portion of the multilayer transfer film is separable from the second portion of the multilayer transfer film to form a decorated plastic article having the second portion with a surface relief formed by the structural layer.

2. The multilayer body as claimed in claim 1 , wherein the structural layer has depressed regions which are formed as voids and/or comprise a material which is softer than the structures of the structural layer.

3. The multilayer body as claimed in claim 1 , wherein the multilayer transfer film does not have any deformation originating from the structural layer.

4. The multilayer body as claimed in claim 1 , wherein a layer of the multilayer body which is arranged on a side of the structural layer that is facing away from the first carrier film directly adjacent the structural layer, has a constant layer thickness.

5. The multilayer body as claimed in claim 1 , wherein the first carrier film is a polyester film.

6. The multilayer body as claimed in claim 1 , wherein the first carrier film has a thickness in the range from 12 to 50 μm.

7. The multilayer body as claimed in claim 1 , wherein the second carrier film is a polyester film or an ABS film.

8. The multilayer body as claimed in claim 7 , wherein the polyester film has a thickness in the range from 12 to 50 μm or the ABS film has a thickness in the range from 200 μm to 750 μm.

9. The multilayer body as claimed in claim 1 , wherein the structural layer comprises a radiation-curable lacquer which is completely cured.

10. The multilayer body as claimed in claim 1 , wherein the at least one decorative layer comprises a radiation-curable lacquer which is not completely cured.

11. The multilayer body as claimed in claim 1 , wherein the structural layer has a thickness in the range from 5 to 250 μm.

12. The multilayer body as claimed in claim 1 , wherein the structural layer has a structure depth in the range from 5 to 250 μm.

13. The multilayer body as claimed in claim 1 , wherein neighboring elevated regions and/or neighboring depressed regions of the structural layer have a spacing in the range from 1 μm to 50 cm.

14. The multilayer body as claimed in claim 1 , wherein an adhesive layer is arranged directly on the side of the structural layer that is facing away from the first carrier film.

15. The multilayer body as claimed in claim 14 , wherein the adhesive layer has a thickness in the range from 0.5 to 4 μm.

16. The multilayer body as claimed in claim 1 , wherein the side of the first carrier film that is facing away from the structural layer is uncoated.

17. The multilayer body as claimed in claim 1 , wherein the structural layer forms a positive or a negative for a pattern, an alphanumeric character or a pictorial representation.

18. The multilayer body as claimed in claim 1 , wherein the at least one decorative layer comprises at least one protective layer and/or at least one layer with a decorative effect.

19. The multilayer body as claimed in claim 18 , wherein the decorative effect is produced by an at least partially arranged metal layer and/or an at least partially arranged interference layer and/or an at least partially arranged replicating layer with relief structures, and/or an at least partially arranged color layer and/or an at least partially arranged pigmented layer, which comprises fluorescent, phosphorescent, thermochromic or photochromic pigments or pigments with viewing-angle-dependent color-changing effects.

20. The multilayer body as claimed in claim 1 , wherein the structural layer is arranged in register with at least one decoration of at least one of the at least one decorative layer(s).

21. The multilayer body as claimed in claim 1 , wherein the multilayer transfer film comprises, adjoining the structural layer in the following sequence, the at least one decorative layer and the second carrier film.

22. The multilayer body as claimed in claim 21 , wherein the multilayer transfer film comprises a third carrier film, which is arranged between the structural layer and the at least one decorative layer.

23. The multilayer body as claimed in claim 22 , wherein the third carrier film is a polyester film.

Assignees

• Schmidt Jurgen
• Jungmann Gert
• Attner Juri
• Leonhard Kurz Stiftung & Co Kg

Inventors

• Schmidt Jurgen
• Jungmann Gert
• Attner Juri

Classifications

• Y10T428/24802

  Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title

• B32B3/30

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B2367/00

  Polyesters, e.g. PET, i.e. polyethylene terephthalate · CPC title

• B32B27/08

  of synthetic resin · CPC title

• B32B2250/24

  All layers being polymeric · CPC title