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Adhesive wrap film

A film and resin composition technology, applied in thin material processing, special packaging objects, applications, etc., can solve the problems of high film adhesion, insufficient adhesion and pull-out properties, etc., and achieve high adhesion and maintenance. The effect of adhesion

Inactive Publication Date: 2009-08-26
ASAHI KASEI HOME PRODS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion of the film obtained by this method is too high, resulting in entanglement between films, and it is not suitable for use as a stretch film
[0007] In summary of these prior art, biodegradable stretch film that satisfies the adhesion and pull-out properties while maintaining the adhesion in low temperature environment has not yet been obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A mixture of aliphatic polyester resin (A) and ethylene-vinyl acetate copolymer (B) is melt-mixed using a twin-screw extruder, wherein, relative to 100 parts by weight of aliphatic polyester resin (A), ethylene-acetic acid Vinyl ester copolymer (B) is 2 weight parts, and described aliphatic polyester resin (A) is the multipolymer of lactic acid monomer L body and D body, namely D body content is the crystalline polylactic acid resin (melting point : about 150° C.), Leysia H-440 (trade name) manufactured by Mitsui Chemicals Co., Ltd., and the ethylene-vinyl acetate copolymer (B) is Ebaflex EV45LX manufactured by Mitsui DuPont Poly Chemical Co., Ltd. with a vinyl acetate content of 46% by weight. (Product name). At this time, 20 parts by weight of Rikemar PLO19 (trade name, acetylated monoglyceride) manufactured by Riken Bitumin as a liquid additive (C) was injected from the liquid injection part provided in the barrel of the extruder using a quantitative liquid delivery ...

Embodiment 2

[0065] For the resin composition (D) of Example 1, except that the ethylene-vinyl acetate copolymer (B) was changed to 5 parts by weight of Ebaflex EV45LX with a vinyl acetate content of 46% by weight, the same method as in Example 1 was used. In the same way, a film with a thickness of 9 μm was obtained. The work of adhesion, pull-out force, transparency, tensile modulus, and low-temperature adhesion were evaluated for this stretch film. As shown in Table 1, good results were obtained.

Embodiment 3

[0067] For the resin composition (D) of Example 1, except changing the ethylene-vinyl acetate copolymer (B) to 3 parts by weight of Ebaflex EV45LX with a vinyl acetate content of 46% by weight and adding 2 parts by weight of (C) Except for Niu-Saiza-510R (trade name, epoxidized soybean oil) manufactured by NOF Corporation, a film with a thickness of 9 μm was obtained in the same manner as in Example 1. The work of adhesion, pull-out force, transparency, tensile modulus, and low-temperature adhesion were evaluated for this stretch film. As shown in Table 1, good results were obtained.

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Abstract

The present invention relates to a wrapping film comprising, as at least one surface layer, a resin composition (D) layer comprising 0.5 to 5 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 30 to 60% by weight (B) and 5 to 40 parts by weight of a liquid additive (C) based on 100 parts by weight of an aliphatic polyester resin (A).

Description

technical field [0001] The present invention relates to a film used for packaging articles and the like, for example, a film for food packaging or a wrapping film for food packaging in households. In particular, it is a biodegradable stretch film that has both adhesion and pull-out properties, excellent flexibility, transparency, and touch, and maintains high adhesion even in low temperature environments. Background technique [0002] Thermoplastic resin films have been used in businesses involving food, such as restaurants and food stores, and in general households, when food needs to be preserved and when it is heated in a microwave oven. Among these, wrapping films for food packaging using vinylidene chloride-based copolymer resins are widely used. In addition, non-halogen-based wrapping films for food packaging made of resins other than vinylidene chloride-based copolymer resins have been proposed in recent years, and wrapping films made of polyethylene or polypropylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36C08J5/18C08K5/103C08L67/02
CPCC08J2367/04C08L67/04C08L23/0853C08J5/18C08K5/103B32B27/36B32B27/08B32B27/306B32B27/32B32B27/34B32B2270/00B32B2307/412B32B2307/54B32B2307/7163B32B2439/70Y10T428/2852C08L2666/06
Inventor 坂本祐一郎石川浩嗣
Owner ASAHI KASEI HOME PRODS CORP
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