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Resin composition for foam production and foam using the same

A technology of resin composition and foamed resin layer, which is applied in the field of foam and resin composition for foam manufacture, to achieve the effect of improving discoloration

Active Publication Date: 2014-05-28
DAI NIPPON PRINTING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above compounding example, when the resin component is changed to a carboxyl group-containing resin (such as ethylene-methacrylic acid copolymer EMAA), there is a resulting Discoloration (yellowing) of the foamed resin layer or yellowing of the paper substrate
It is considered that the reason is that the chemical reaction between the carboxyl group-containing resin and the foaming aid (metal oxides and fatty acid metal salts) damages the effect of the foaming aid to promote foaming, so excessive heating is required in the foaming process. , so that the resin layer and the paper substrate are baked (discolored)

Method used

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  • Resin composition for foam production and foam using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110]

[0111] Using a T-die extruder, a foaming agent-containing resin layer (100 μm) was extruded on a substrate (lining paper) to form a film. As a base material, a liner paper (WK-665DO (manufactured by Kohin), thickness 110 μm, grammage 65 g) was prepared, and a resin layer containing a foaming agent was extruded thereon to form a film.

[0112] In the extrusion conditions, the temperature of the cylinder containing the resin composition for forming the foaming agent-containing resin layer was 100°C.

[0113] Electron beams (200 kV, 50 kGy) were irradiated to the above-mentioned laminate from the side of the foaming agent-containing resin layer to resin-crosslink EMAA contained in the foaming agent-containing resin layer.

[0114] Then, on the resin layer that contains blowing agent, coat EVA type aqueous emulsion (2g / m 2 ) to form the bottom layer, and then print the cloth pattern with the water-based ink "Haidrick" (manufactured by Dainichi Seika Co., Ltd.).

[01...

Embodiment 2

[0120] Except that the foaming aid was replaced by dodecanedioic acid dihydrazide (product name "DDH", manufactured by Otsuka Chemical Industry), the foamed decorative sheet was produced in the same manner as in Example 1.

Embodiment 3

[0122] A foam decorative sheet was produced in the same manner as in Example 1, except that the foaming aid was replaced with isophthalic acid dihydrazide (product name "IDH", manufactured by Otsuka Chemical).

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Abstract

Disclosed is a resin composition for foam production, which contains a carboxyl group-containing resin and an ADCA foaming agent. The resin composition is improved in problems such as discoloration (yellowing) of a foam which is obtained by thermally foaming the resin composition. A foam obtained by using the resin composition for foam production is also disclosed. Specifically, the resin composition for foam production is characterized by containing a carboxyl group-containing resin, an azodicarbonamide foaming agent, and a carboxylic acid hydrazide compound.

Description

technical field [0001] The present invention relates to a resin composition for foam production and a foam using the same. [0002] As a foam, the foamed resin layer used for a foam decorative sheet is mentioned, for example. Background technique [0003] Conventionally, a foam decorative sheet in which a foamed resin layer of a vinyl chloride resin is formed on a paper base material (backing paper) is known as a foam decorative sheet. In recent years, halogen-free resins such as ethylene-vinyl acetate copolymer resins (EVA), acrylic resins, and olefin resins have been used for the foamed resin layer in consideration of the impact on the environment (Patent Documents 1 to 3, etc.). [0004] The foamed resin layer can be obtained, for example, by heating and foaming a foaming agent-containing resin layer formed of a resin composition containing a resin component, a thermally decomposable foaming agent, and a foaming auxiliary agent. As a compounding example of the above-me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/10B32B5/18B32B27/32B32B29/00B32B33/00C08K5/23C08K5/25C08L23/08C08L23/26C08L31/02C08L101/08
CPCC08L23/0869C08L2203/14C08J2333/06C08K5/25C08J9/103
Inventor 本野裕幸高桥一弘西尾俊和黑田敦司竹本正孝增田洋史森浩司安丸千秋大塚健二郎
Owner DAI NIPPON PRINTING CO LTD