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Structure and cyclic olefin resin molded body

A technology for olefin-based resins and moldings, which is applied in the field of structures and cyclic olefin-based resin moldings. It can solve problems such as discoloration and deformation of molded products, achieve high transparency, and improve printing suitability.

Active Publication Date: 2015-02-18
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is known that combustion treatment tends to cause deformation and discoloration of molded articles. Especially, cycloolefin-based resin molded articles are used in applications requiring transparency, so it is necessary to easily perform desired surface treatment by methods other than combustion treatment. technology

Method used

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  • Structure and cyclic olefin resin molded body
  • Structure and cyclic olefin resin molded body
  • Structure and cyclic olefin resin molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0101] Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these Examples.

[0102]

[0103] Cyclic olefin-based resin 1: Copolymer of ethylene and norbornene (manufactured by Topas Advanced Polymers, "TOPAS6013S-04", glass transition temperature: 138° C.)

[0104] Cyclic olefin-based resin 2: Copolymer of ethylene and norbornene (manufactured by Topas Advanced Polymers, Inc. "TOPAS6015S-04", glass transition temperature: 158° C.)

[0105]

[0106] Using the cyclic olefin-based resin 1 as a raw material, an ISO178 bending test piece was produced using an injection molding machine under the conditions of a barrel temperature of 280°C, a mold temperature of 110°C, an injection speed of 100mm / s, and a holding pressure of 50MPa. This test piece was used as a swelling test piece, and the mass before immersion was measured. In addition, the mass after immersion and the mass after drying mentioned later were ca...

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Abstract

Provided is a surface treatment technique for cyclic olefin resin molded bodies, which improves the printability of the surface of a cyclic olefin resin molded body and causes almost no problems such as discoloration that deteriorate transparency of the cyclic olefin resin molded body. Specifically provided is a structure which is provided with a cyclic olefin resin molded body that is at least partially subjected to a surface treatment and a print layer that is formed on the treated surface of the molded body. The surface treatment is carried out using a solvent that causes swelling of the cyclic olefin resin molded body. It is preferable that the solvent contains at least one substance that is selected from the group consisting of butyl acetate, methyl isobutyl ketone and liquid paraffins.

Description

technical field [0001] The present invention relates to a structured body and a cyclic olefin-based resin molded body. Background technique [0002] Cyclic olefin-based resins are resins having a cyclic olefin skeleton in the main chain, and have high transparency, low birefringence, high heat distortion temperature, light weight, dimensional stability, low water absorption, hydrolysis resistance, and chemical resistance. A resin with many characteristics such as chemical properties, low dielectric constant, low dielectric loss, and no substances harmful to the environment. [0003] As described above, cyclic olefin-based resins are very excellent resins, and molded articles formed from such resins are used in various fields. [0004] However, a printed layer may be formed on the surface of the resin molded body. For example, when the resin molded article is a container, the case where the printed layer on which the information of the content is printed is formed etc. are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/02C08L45/00
CPCC08J7/02C08J2323/08
Inventor 小野寺章晃宫崎广隆
Owner POLYPLASTICS CO LTD