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Pellet mixture, molded article and method for manufacturing the molded article

A manufacturing method and molding technology, applied to flat products, applications, household appliances, etc., can solve the problems of resin composition becoming white and turbid, achieve the effect of smoothing the surface and inhibiting the generation of gel-like substances

Active Publication Date: 2010-08-11
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, as mentioned above, the improved physical properties are affected by various materials, compounding amounts, etc.
For example, in Patent Document 3 and Patent Document 4, when a large amount of low-density polyethylene is blended into the cyclic olefin-based resin, undesirable effects such as whitening of the obtained resin composition occur.

Method used

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  • Pellet mixture, molded article and method for manufacturing the molded article
  • Pellet mixture, molded article and method for manufacturing the molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0110] According to the materials and compounding ratios listed in Table 2, the cyclic olefin-based resin particles and low-density polyethylene particles were mixed to obtain the particle mixture of the present invention. This pellet mixture was supplied to a molding machine while blowing nitrogen gas into the hopper mouth, and the films of Examples were produced using a T-die under the molding conditions shown in Table 1 below. The size of the obtained thin film was 10 m long x 12 m wide x 50 m thick.

[0111] In addition, the conditions at the time of film formation were visually observed and judged according to the following three levels.

[0112] ○: Stable

[0113] Δ: Slightly unstable and the thickness varies, but film formation is possible.

[0114] ×: Unstable spit out, unable to form film

[0115] [Molding conditions]

[0116] Table 1

[0117]

[0118] Comparative Examples 1-4 and Reference Examples 1 and 2

[0119] According to the materials and compoundin...

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Abstract

The invention provides a pellet mixture containing specific amount of a specific additive agent capable of keeping various excellent properties of matter belonging to ring olefin resin, capable of being used under various conditions and capable of efficiently inhibiting the production of gelatinous matter, and a molded article for molding the pellet mixture, and a method for manufacturing the molded article containing ring olefin resin and low-density polyethylene. The pellet mixture contains ring olefin resin and low-density polyethylene, wherein the melt mass flow rate of the low-density polyethylene is 4-80 g per 10 minutes, and the melt mass flow rate is detected according to JIS K6922-1 under the conditions that the temperature is 190 DEG C and the load is 2.16 Kg.

Description

technical field [0001] The present invention relates to a particle mixture containing cyclic olefin resin particles and low-density polyethylene, a molded article obtained by molding the particle mixture, and a method for producing a molded article containing cyclic olefin resin and low-density polyethylene. Background technique [0002] Cyclic olefin-based resins are excellent in transparency, chemical resistance, moisture resistance, mechanical properties, and the like, and are used as materials for optical applications, pharmaceuticals, and medical instrument applications. In addition, cyclic olefin-based resins are also used in film-like or sheet-like molded articles and packaging materials because they are excellent in melt processability and fluidity. Furthermore, the cyclic olefin-based resin is also excellent in heat shrinkability and printing properties. Thus, cyclic olefin-based resins are used in various fields. [0003] Cyclic olefin-based resins have the side ...

Claims

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Application Information

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IPC IPC(8): C08L45/00C08L23/06B29C47/00B29L7/00
CPCC08J3/20C08J5/18C08L45/00
Inventor 大川秀俊青岛广宣
Owner POLYPLASTICS CO LTD