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Gas-barrier packaging material

A packaging material and gas-barrier technology, applied in the field of gas-barrier packaging materials, can solve the problems of reduced gas-barrier properties such as oxygen and deterioration of resistance, and achieve excellent productivity and excellent deterioration resistance

Active Publication Date: 2016-01-13
TOPPAN HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although packaging materials composed of these polymers have very excellent gas barrier properties such as oxygen under dry conditions, on the other hand, under high humidity conditions, there is a problem that The problem that the gas barrier property against oxygen etc. is greatly reduced, or the problem that the resistance of the above-mentioned film to humidity and hot water deteriorates

Method used

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  • Gas-barrier packaging material

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 》

[0030] The gas barrier packaging material according to the first embodiment of the present invention has a support, an adhesive layer laminated on the support, a first barrier layer laminated on the adhesive layer, and a first barrier layer laminated on the first adhesive layer. A second barrier layer on the barrier layer, and a protective layer laminated on the second barrier layer, the protective layer is formed from a coating solution containing a polyvalent metal compound, a polyester resin, and a dispersant, the dispersant It is a sodium salt of a polycarboxylic acid-based resin, wherein, relative to 100% by weight of the protective layer, the polyvalent metal compound is contained in an amount of 40% to 90% by weight, and after the second barrier layer is separated and When the infrared absorption spectrum of the separated second barrier layer is measured by the transmission method, 1490cm -1 to 1659cm -1 The maximum peak height α within the range is 1660cm -1 to 1750c...

no. 2 Embodiment approach 》

[0144] The gas-barrier packaging material according to the second embodiment of the present invention is obtained by subjecting the gas-barrier packaging material according to the above-mentioned first embodiment to at least one treatment selected from the group consisting of retort treatment, boiling treatment, and humidity-conditioning treatment. A gas-barrier packaging material, wherein, when the second barrier layer is separated and the infrared absorption spectrum of the separated second barrier layer is measured by the transmission method, 1490 cm -1 to 1659cm -1 The maximum peak height α within the range is 1660cm -1 to 1750cm -1 The ratio α / β of the maximum peak height β within the range is 1 or more.

[0145] [Steaming treatment, boiling treatment and humidity conditioning treatment]

[0146] Regarding the gas barrier packaging material of the present embodiment, the above gas barrier packaging material is subjected to at least one treatment selected from the group...

Embodiment 1

[0226] A stretched PET film was used as a base material, and the coating solution A was applied onto the base material using a bar coater so that the thickness after drying was 0.2 μm, and dried to obtain a [substrate / adhesive layer]. As the stretched PET film, a polyethylene terephthalate film Lumilar P60 (12 μm) manufactured by Toray was used.

[0227] On the adhesive layer in the [substrate / adhesive layer], metal aluminum is evaporated using an electron beam heating vacuum deposition device, and oxygen is introduced into the vaporized aluminum so that aluminum oxide is deposited on the adhesive layer, thereby An inorganic deposition layer with a thickness of 20 nm was formed to obtain [substrate / adhesive layer / first barrier layer].

[0228]On the first barrier layer of [substrate / adhesive layer / first barrier layer] obtained in this way, use a bar coater so that the thickness of the above-mentioned coating solution E after drying becomes 0.3 μm, and the drying of the above-m...

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Abstract

This gas-barrier packaging material is provided with: a support body; an adhesive layer layered on the support body; a first barrier layer layered on the adhesive layer; a second barrier layer layered on the first barrier layer; and a protective layer layered on the second barrier layer and formed from a coating liquid containing a polyvalent metal compound, a polyester resin, and a dispersant which is a sodium salt of a polycarboxylic acid resin. Therein: given that the protective layer is contained in the amount of 100 wt%, the polyvalent metal compound is contained in the amount of 40-90 wt%; and when measuring the infrared absorption spectrum of the second barrier layer after separating the second barrier layer using a transmission method, the ratio ([Alpha] / [Beta]) of the maximum peak height ([Alpha]) in the range of 1490-1659cm-1 to the maximum peak height ([Beta]) in the range of 1660-1750cm-1 is less than 1.

Description

technical field [0001] The invention relates to a gas barrier packaging material. [0002] This application claims the priority of Japanese Patent Application No. 2013-112135 filed in Japan on May 28, 2013, the content of which is incorporated herein by reference. Background technique [0003] For packaging materials used for packaging food, pharmaceuticals, etc., it is required to prevent deterioration of the contents. For example, for food packaging materials, it is required to be able to inhibit the oxidation and deterioration of protein and oil, and then maintain the flavor and freshness. Deterioration of active ingredients, thereby maintaining their potency. This deterioration of the contents is primarily caused by oxygen permeating the packaging material as well as water vapor or other gases that react with the contents. Therefore, packaging materials used for packaging foods, pharmaceuticals, and the like are required to have properties (gas barrier properties) tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B27/36C08J7/043C08J7/046C08J7/048
CPCC08J2367/02C08J2433/00C08J2475/04Y10T428/31605Y10T428/1379Y10T428/31551Y10T428/31786C08J7/048C08J7/043C08J7/046B32B27/08B32B2250/05B32B27/26B32B2439/80B32B15/08B32B2255/10B32B2255/28B32B2307/7242B32B27/18B32B2367/00B32B2439/70B32B2307/7244B32B2255/26B32B2311/00B32B2439/00B32B7/12B32B2375/00B32B7/10B32B27/306B32B27/36B32B27/40B32B15/09B32B2307/7246B32B7/04B05D3/02C09D175/06C09D175/04B05D3/107C09D133/02B05D3/10C09D175/14C09J133/00C09J175/04C08J7/08C09J133/066C09J133/02C08J2375/06C08J2367/00C08K5/5465C08K3/20C08K5/541C08K3/22C08K5/0025C08K3/18C08K5/548C08K5/54C08K5/29C08J7/0427C09D167/00
Inventor 大森望河口克己
Owner TOPPAN HLDG INC
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