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Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film

A resin compound and vinylidene chloride technology, applied in the field of biaxially stretched films and poly1, can solve the problems of increased number of defects, interlayer peeling, insufficient and so on, and achieve the effect of prolonging the continuous running time

Active Publication Date: 2010-12-15
KUREHA KAGAKU KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the research results of the present inventors, it has been found that if the polyethylene component and the wax component are used in combination according to the compounding ratios disclosed in the specification of US Patent No. 5,002,989 and Japanese Patent No. 2801323, the obtained PVDC resin is used to compound The film is biaxially stretched by the inflation method. Although the continuous running time can be extended to a certain extent, it is still not sufficient. After 100 hours to 200 hours, the defects caused by the pyrolysis of the PVDC resin in the biaxially stretched film significantly increased
It was also found that when the resulting biaxially stretched film was made into a two-layer film, delamination tended to occur

Method used

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  • Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film
  • Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film
  • Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] (1) Modulation of the complex

[0132] As PVDC resin, 1,1-dichloroethylene-vinyl chloride copolymer (1,1-dichloroethylene / vinyl chloride=88 / 12% by weight, reduced viscosity=0.058 liter / g) obtained by suspension polymerization method was used powder resin (particle size = 442 μm).

[0133] In the blade mixer, add 100 parts by weight of powdered resin, 2.00 parts by weight of heat stabilizer (epoxidized linseed oil), 3.00 parts by weight of plasticizer (dibutyl sebacate), 0.20 parts by weight thin film surface modifier [silicon dioxide (SiO 2 ); produced by Mizusawa Chemical Industry Co., Ltd., trade name "Silhonait M-1"], 0.20 parts by weight of coloring agent (pigment red 166 produced by Dainichi Seika Co., Ltd.), 0.10 parts by weight of oxidized polyethylene wax (OPE wax; manufactured by Honeywell Co., Ltd. , trade name "Honeywell A-C629A"; melt viscosity=200mPa·s, density=0.930g / cm 3 , melting point=95°C, acid value=16KOHmg / g), and 0.05 parts by weight of high-dens...

Embodiment 2～18

[0137] The biaxially stretched film was continuously produced in the same manner as in Example 1, except that the types and compounding ratios of various additive components were changed as shown in Tables 1 and 2. PVDC resin (powder resin), heat stabilizer, plasticizer, film surface modifier, and coloring agent, are identical with embodiment 1 prescription.

[0138] However, in Example 11, calcium carbonate was used instead of silica as a film surface modifier. Oxidized polyethylene wax (OPE wax) and high-density polyethylene (HDPE) were the same as in Example 1.

[0139] The additive components not used in Example 1 are as follows.

[0140] (1) Polyethylene wax (PE wax): manufactured by Honeywell, trade name "Honeywell A-C617", melt viscosity = 180 mPa·s, density = 0.910 g / cm 3 , melting point = 97°C;

[0141] (2) Low-density polyethylene (LDPE): manufactured by Mitsui Chemicals, trade name "Mirason", density = 0.921 g / cm 3 , melting point=109°C, MFR=3.3g / 10min;

[0142...

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Abstract

The present invention provides a polyvinylidene chloride resin composition wherein 0.01-0.20 parts by weight of at least one wax powder selected from the group consisting of polyethylene waxes and oxidized polyethylene waxes and 0.01-0.20 parts by weight of at least one polyethylene resin powder selected from the group consisting of high-density polyethylenes and low-density polyethylenes are adhered to powder particle surfaces of a polyvinylidene chloride resin per 100 parts by weight of the polyvinylidene chloride resin powder. Also disclosed are a method for producing a biaxially stretchedfilm wherein such a composition is biaxially stretched by an inflation method, and a thus-obtained biaxially stretched film.

Description

technical field [0001] The present invention relates to a polyvinylidene chloride resin compound, a biaxially stretched film formed from the polyvinylidene chloride resin compound, and a method for producing the biaxially stretched film. The biaxially stretched film of the present invention is preferably used as a packaging material for processed foods such as fish sausages and processed meat products. Background technique [0002] Polyvinylidene chloride resin (hereinafter referred to as "PVDC resin") is generally a copolymer of 1,1-dichloroethylene and other monomers that can be copolymerized with the 1,1-dichloroethylene. The homopolymer of 1,1-dichloroethylene is difficult to perform melt processing such as extrusion molding because its melting temperature is close to its decomposition temperature. In addition, since a homopolymer of 1,1-dichloroethylene has insufficient compatibility with a plasticizer, if only a plasticizer is added, the processability improvement due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/08B29C55/26B29C55/28C08J5/18C08K5/098
CPCC08J2327/08C08L27/08C08L23/04C08L23/30C08J5/18B29C55/28C08K5/13C08K5/098
Inventor 樋口敦宏菅野胜彦饭冢均
Owner KUREHA KAGAKU KOGYO KK
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