Shape retaining film and production method therefor, laminated filmtape, self-adhesive filmtape, anisotropic thermal conductive film, and shape retaining fiber

A manufacturing method and a technology for a substrate layer, which are applied in fiber processing, chemical instruments and methods, layered products, etc., can solve the problem of time-consuming and laborious aluminum separation and waste, and achieve excellent shape retention, high tensile elastic modulus, Excellent longitudinal crack resistance

Inactive Publication Date: 2013-04-24
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because aluminum is time-consuming and laborious to separate and discard, and it cannot be used for products that are filled with water in a container and then heated in a microwave oven, a shape-retaining film made of resin has been studied.

Method used

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  • Shape retaining film and production method therefor, laminated filmtape, self-adhesive filmtape, anisotropic thermal conductive film, and shape retaining fiber
  • Shape retaining film and production method therefor, laminated filmtape, self-adhesive filmtape, anisotropic thermal conductive film, and shape retaining fiber
  • Shape retaining film and production method therefor, laminated filmtape, self-adhesive filmtape, anisotropic thermal conductive film, and shape retaining fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0173] Hereinafter, the present invention will be specifically described based on examples. The technical scope of the present invention is not limited to these Examples.

[0174] 1. Various raw materials

[0175] HDPE: high-density polyethylene (trade name "Novatec HD HB530", manufactured by Japan Polyethylene Corporation), density: 965kg / m 3 , Mw / Mn: 15.8, MFR (190°C): 0.36g / 10min

[0176] LLDPE (1): Linear low-density polyethylene (trade name "Evolue H SP4505", manufactured by Prime Polymer Co., Ltd.),

[0177] LLDPE (2): Linear low-density polyethylene (trade name "Moretec0278G", manufactured by Prime Polymer Co., Ltd.)

[0178] Thermoplastic elastomer: α-olefin copolymer (trade name "Tafmer A4090", manufactured by Mitsui Chemicals), melting point Tm2: 77°C

[0179] 2. Manufacture of shape-retaining film (Example 1)

[0180] HDPE was used as a raw material for the base material layers (A) and (B), and a thermoplastic elastomer was used as a raw material for the soft l...

Embodiment 2

[0183] Except having stretched the base film to a draw ratio of 20 times, it carried out similarly to the said Example 1, and obtained the uniaxially stretched film. In addition, the thermal conductivity in the stretching direction (X direction) of the obtained uniaxially stretched film was 7.86 W / mK, and the thermal conductivity in the direction substantially perpendicular to the X direction (Y direction) was 0.289 W / mK.

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Abstract

The purpose of the present invention is to provide a shape retaining film excellent in shape retention, and further having high tensile elasticity and good longitudinal tear resistance. The shape retaining film is composed of at least one base material layer containing an ethylene polymer that has the density of 900 kg / m3 or more, and the weight-average molecular weight (Mw) / number-average molecular weight (Mn) of 5 to 20, and at least one soft layer containing a high polymer material. The ethylene polymer is an ethylene homopolymer or an ethylene-a-olefin copolymer in which the content of a-olefin unit having 3 to 6 carbon atoms is less than 2% by weight. The high polymer material has the melting point (Tm2) lower than the melting point (Tm1) of the ethylene polymer, the tensile elasticity of 10 to 50 GPa, and the recovery angle of 65 or less as a result of 180 bending test.

Description

technical field [0001] The present invention relates to a shape-retaining film, a method for producing the same, a laminated film, a laminated tape, an adhesive film, an adhesive tape, an anisotropic heat-conductive film, and a shape-retaining fiber. Background technique [0002] In containers containing food such as cup noodles and puddings, it is required to maintain the open shape when the lid is opened, and maintain the closed shape when the lid is closed (shape retention). Aluminum etc. have conventionally been used as a lid material used for such a container. However, because aluminum is time-consuming and laborious to separate and discard, and it cannot be used for products that are filled with water in a container and heated in a microwave oven, a shape-retaining film made of resin has been studied. [0003] As a shape-retaining film made of resin, for example, a film obtained by uniaxially stretching polyethylene has been proposed (for example, refer to Patent Docu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32D02G3/02
CPCB32B27/32H01L2224/73204D10B2401/046D02G3/045B32B27/30D01D5/30D01F6/04H01L23/373B32B27/08D02G3/02H01L2224/16225B65D31/02D01D5/426H01L2224/32225Y10T428/2495Y10T428/3192Y10T428/31909H01L2924/00
Inventor 川住民生江里口真男西川茂雄
Owner MITSUI CHEM INC
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