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Easy-split contracted film, easy-split laminated film, easy-split bag, and manufacturing method for easy-split contracted film

A technology of shrink film and manufacturing method, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of inner peeling, large inner peeling, unstable strength of laminated film, etc. Excellent properties, excellent linear cutoff, excellent effect of anti-peeling effect in the layer

Active Publication Date: 2008-01-23
IDEMITSU UNITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a biaxially stretched film composed of a mixed resin of Ny6 and MXD6 is placed under severe conditions after forming a laminated film, there is a fear that so-called intralayer peeling may occur within the layers of the biaxially stretched film
If this layer peeling occurs, the strength of the laminated film will be unstable, and in the case of forming a bag, there will be practical problems.
Especially in the case of shrink packaging bags where the laminated film shrinks when boiling or retorting, internal peeling of the layer is a big problem

Method used

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  • Easy-split contracted film, easy-split laminated film, easy-split bag, and manufacturing method for easy-split contracted film
  • Easy-split contracted film, easy-split laminated film, easy-split bag, and manufacturing method for easy-split contracted film
  • Easy-split contracted film, easy-split laminated film, easy-split bag, and manufacturing method for easy-split contracted film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (Manufacture of breakable shrink film)

[0074] In the mixture that is mixed with Ny6 granule and MXD6 granule in the ratio of 70 mass parts and 30 mass parts respectively, mix with 15 mass % of raw material total amount and have once-in-a-time melt-mixing and make the thermal experience product of granule with this mixing ratio (MXD6 The melting point is 236°C). After melting and kneading the dry mixture in an extruder at 270° C., the melted product was extruded from a die in the form of a cylindrical film, followed by quenching with water to prepare a film blank.

[0075] Among them, the melting point of MXD6 was measured by using a differential scanning calorimeter (DSC) manufactured by Perkin Elma Co., Ltd., from 50° C. to 280° C. at a heating rate of 10° C. / min. All values ​​are melting points in the first melting.

[0076] Ny6 used as Ny6 manufactured by Ube Industries, Ltd. [UBE Nylon 1023FD (trade name), relative viscosity μr=3.6], used as MXD6 was manufacture...

Embodiment 2～8

[0106] [Examples 2-8, Comparative Examples 1-7]

[0107] In the above-mentioned embodiment 1, the mixing amount of Ny6 particles, MXD6 particles and heat history products and the melting point of MXD6 in heat history products are changed, and the heat fixing conditions after stretching are changed simultaneously, and the same manufacturing process as in embodiment 1 is carried out. film forming. An evaluation test was also performed in the same manner as in Example 1. Table 1 shows the production conditions and evaluation results of Examples, and Table 2 shows the production conditions and evaluation results of Comparative Examples.

[0108] Table 1

[0109] Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8

Ne6

(parts by mass)

70

70

70

70

70

70

70

80

MXD6

(parts by mass)

...

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Abstract

The invention relates to a fissility shrinkable film, containing 60-85 mass portion of nylon 6 (Ny6) and 15-40 mass portion of m(p-xylylene adipamide) (MXD6) (total is 100 mass portion) as materials. The material comprises original materials containing 60-85 mass portion of Ny and 15-40 mass portion portion of MXD, and a heat processing matter for melting refining the Ny6 and MXD6 to make the MXD6 melting point be 233-238 DEG C. The content of the heat processing matter is 5-40 mass%. The shrinkage of the fissility shrinkable film is 3-20% when keeping in the hot water at 95 DEG C for 30 mins.

Description

technical field [0001] The present invention relates to methods of making breakable films, breakable laminated films, breakable bags and breakable shrink films. Background technique [0002] In Japan, in order to help the aging society and enable the elderly or disabled to adapt to the rapid social life together with the young or normal people, attention has been paid to the "barrier-free" of removing barriers (impediments) in various fields. "concept. [0003] On the other hand, films such as linear low-density polyethylene (L-LDPE) are often used as sealing substrate (sealing material) films for packaging bags of food and pharmaceuticals. However, this L-LDPE film is safe due to its excellent sealing strength, but has a problem that it cannot be opened straight along the crack during use due to its high tear resistance, making it difficult to open the film. [0004] Therefore, even in the field of packaging, the requirement for "barrier-free" is very high. Specifically, ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L77/02C08K5/18B32B27/34B29C55/10
CPCB32B27/08B32B27/34B65D75/28C08J3/20C08J5/18C08J2377/02C08K5/16C08L77/02C08L2203/16
Inventor 高重真男
Owner IDEMITSU UNITECH CO LTD
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