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Decorative sheet and decorative molded product

A decorative sheet and thermoplastic resin technology, which is applied in the direction of decorations, decorative arts, decorative structures, etc., can solve the problems of reduced productivity, high viscosity of resin composition, poor transfer of resin composition, etc., and achieve the effect of excellent productivity

Active Publication Date: 2013-06-19
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a high-molecular-weight resin is selected, the following problems sometimes occur: generally speaking, the viscosity of the resin composition tends to become high, and the resin composition forming the peeling layer clogs on the printing plate or the nozzle, which sometimes causes the resin composition to The so-called dry plate problem of poor material transfer, the printing adaptability is reduced, and the productivity is significantly reduced.

Method used

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  • Decorative sheet and decorative molded product
  • Decorative sheet and decorative molded product
  • Decorative sheet and decorative molded product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0141] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited at all by this Example. First, examples and comparative examples related to the above-mentioned embodiment (a) will be described.

[0142] (Evaluation method)

[0143] (a-1) Pollution resistance

[0144] Sunscreen (“SUNSCREEN LOTION (trade name)”, manufactured by Walgreens Corporation), and insect repellent spray (“Cutter MAX100 (trade name)”, manufactured by Parkenna Corporation) were applied to each of Examples a-1 to a-4 and compared The decorated molded articles obtained in Examples a-1 to a-3 were left in an oven at 70° C. for 1 hour, taken out from the oven, and the state of the surface of the decorated molded article after wiping was observed visually. Evaluation was performed based on the following judgment criteria.

[0145] 〇: The state of the surface does not change at all

[0146] △: A part of the surface is slightly rough, and there is no practical prob...

Embodiment a-1

[0159] Embodiment a-1 (manufacture of decorative sheet)

[0160] An acrylic-melamine resin was coated by a gravure coating method on a biaxially stretched PET sheet (thickness: 75 μm) subjected to an adhesion treatment as a base material sheet to form a release layer (thickness: 3 μm).

[0161] Next, a thermoplastic resin (acrylic resin, methyl methacrylate and methacrylic acid) containing 40 parts by mass of a multifunctional (meth)acrylate monomer (pentaerythritol triacrylate, molecular weight: 298) and a weight average molecular weight Mw of 150000 Rods for ionizing radiation curable compositions of copolymers, glass transition temperature Tg: 95°C) 60 parts by mass, other ultraviolet absorbers: 1.1 parts by mass, light stabilizers: 0.6 parts by mass, and leveling agents: 0.2 parts by mass A coater coated on the release layer, and irradiated electron beams with an acceleration voltage of 165kV and an irradiation dose of 50kGy (5Mrad) to cross-link and cure to form a surface...

Embodiment a-2～a-3 and comparative example a-1～a-3

[0166] In Example a-1, the decorative sheet was produced in the same manner as in Example a-1, except that the mass ratio of the polyfunctional (meth)acrylate monomer, thermoplastic resin, and them was changed to the values ​​shown in Table 1. , were evaluated by the above methods. The evaluation results are shown in Table a-1.

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Abstract

Provided are a decorative sheet and a decorative molded product with excellent productivity that impart the decorative molded product with superior stain resistance and moldability. The decorative sheet and the decorative molded product sequentially have a releasable layer and a surface protecting layer on one side of a base sheet, the surface protecting layer composed of an ionizing radiation-curable resin composition containing a polyfunctional (meth)acrylate monomer and a thermoplastic resin with a molecular weight of 175 to 1000, the thermoplastic resin having a predetermined weight average molecular weight, and the polyfunctional (meth)acrylate monomer and the thermoplastic resin being of predetermined mass ratios.

Description

technical field [0001] The present invention relates to a decorative sheet and a decorative molded product. Background technique [0002] At present, the decoration of resin molded objects with complex surface shapes such as three-dimensional curved surfaces can use the injection molding simultaneous transfer decoration method. According to the simultaneous transfer decoration method of injection molding, after the decorative sheet is bonded to the inner surface of the mold and the mold is closed, the molten injection resin is injected into the cavity to integrate the decorative sheet and the injection resin, and then the decorative molded product is cooled and removed from the mold. After taking out of the mold, the base material sheet is peeled off to obtain a decorative molded article on which the transfer layer has been transferred. [0003] The decorative molded article obtained as above is not only used in the field of household electrical appliances, automobile inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/00B44C1/165
CPCB32B27/16B32B2250/42B32B2270/00B32B2451/00B32B38/0008B32B2038/0076B29C45/14811Y10T428/31935B32B27/308B32B27/06B32B7/12B44C1/165B44C3/02C09D133/10
Inventor 野田明寿阿竹浩之名木义幸高野万理
Owner DAI NIPPON PRINTING CO LTD