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Decorative sheet

A decorative sheet and polyester film technology, which is applied in decorative arts, decorative structures, and techniques for producing decorative surface effects, etc., can solve problems such as decorative sheet cracking, and achieve good adhesion and impact resistance.

Inactive Publication Date: 2009-09-09
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when forming a three-dimensional curved surface shape with a high degree of deep drawing, since the decorative sheet cannot sufficiently follow the concave-convex shape of the mold, there is a problem that the decorative sheet is broken due to the temperature and impact of the injection resin during injection molding.

Method used

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  • Decorative sheet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Manufacture of decorative sheets

[0065] In the thickness of 75μm, and has figure 2 Use the following coating solution on the biaxially stretched PET film with the dynamic elastic modulus shown in the coating amount of 4g / m 2 Implement gravure printing to form a peeling layer. The coating liquid uses acrylic resin as a binder resin and silicone resin as a release material; acrylic printing ink is used in a coating amount of 8 g / m 2 Gravure prints the wood grain pattern, forming the pattern layer. Then, an acrylic resin-based coating solution was applied to a thickness of 4 μm to form a thermally adhesive resin layer, thereby obtaining a decorative sheet.

[0066] (2) Manufacture of decorative moldings

[0067] The decorative sheet obtained in the above (1) was heated with a heating plate temperature of 150° C. to form it according to the inner shape of the injection molding mold and closely bond with the inner surface of the mold. The mold used has a shape wit...

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Abstract

The present invention provides a sheet for decoration which is excellent in an impact resistance in molding a surface form having a three-dimensional curved surface having a high deep-drawing degree and which has a good followability toward a molding surface of a metal die and is suited to decorated moldings. The above sheet for decoration comprises a peel layer, a picture layer and a heat adhesive resin layer which are laminated in order on the surface of a base film comprising a polyester film, wherein a dynamic elastic modulus of the above base film is 1.0 10 6 Pa or more at any temperature falling in a range of 190 to 240 DEG C.

Description

technical field [0001] The present invention relates to a decorative sheet used for a decorative molded article obtained by injection molding. Background technique [0002] Conventionally, in the decoration of a resin molded body having a complex surface shape such as a three-dimensional curved surface, an injection molding simultaneous decoration method has been used. Injection molding simultaneous decoration method refers to the method of decorating the surface of the resin molded body by integrating the decorative sheet inserted into the mold with the molten injection resin injected into the cavity during injection molding. The structure of the integrated decorative sheet is different, and this method can generally be roughly divided into an injection molding simultaneous lamination decoration method and an injection molding simultaneous transfer decoration method. [0003] In the injection molding simultaneous transfer decoration method, the transfer layer side of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44C1/17B32B27/36B29C45/14B29L9/00
CPCB29C45/14827B44C1/1729B32B27/36B32B7/12B32B15/09B32B15/20B32B27/08B32B27/20B32B2255/10B32B2255/26B32B2255/28B32B2264/025B32B2264/10B32B2264/102B32B2264/104B32B2307/4026B32B2307/414B32B2307/422B32B2307/51B32B2307/518B32B2307/702B32B2307/71B32B2457/00B32B2605/003Y10T428/24843B44C3/02
Inventor 名木义幸阿竹浩之大田健史
Owner DAI NIPPON PRINTING CO LTD
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