Gas barrier laminate and packaging material

A gas-barrier laminate and gas-barrier layer technology, used in packaging, wrapping paper, transportation and packaging, etc., can solve problems such as reduced incineration efficiency, clogging of exhaust ports or furnace interiors by incineration residues, and generation of dioxins, etc. , to achieve excellent gas barrier properties, less environmental load, and the effect of inhibiting immersion

Inactive Publication Date: 2012-12-12
TOPPAN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these materials are incinerated, in the case of aluminum, there will be a problem that the incineration residue clogs the exhaust port or the inside of the furnace, reducing the incineration efficiency; in the case of polyvinylidene chloride, dioxin will be formed. English and other issues, therefore, it is necessary to seek materials with less environmental load

Method used

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  • Gas barrier laminate and packaging material
  • Gas barrier laminate and packaging material
  • Gas barrier laminate and packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~10

[0091] [Manufacture of Gas Barrier Films in Examples 1 to 10]

[0092] On a substrate of polyethylene terephthalate film (Lumila-P60, manufactured by Toray Co., Ltd.) with a thickness of 12 μm, it was prepared by bar coating at the compounding ratios shown in Formulations 1 to 10 in Table 1. The coating solution was prepared to have a film thickness of 0.2 μm, and then dried to form a gas barrier layer to produce a gas barrier film.

[0093] [Manufacture of gas barrier film for packaging materials in Examples 1 to 10]

[0094] Furthermore, in order to use the produced gas barrier film as a packaging material, the heat-seal layer was laminated on the side of the gas barrier layer via the adhesive layer for lamination by dry lamination, and left at 50°C for 4 days to produce a package. The material uses a gas barrier film. As the heat-sealing layer, a linear low-density polyethylene film (TUX-FCS, manufactured by Toseiro Co., Ltd.) with a thickness of 50 μm was used, and as an...

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Abstract

Provided is a gas barrier laminate that maintains the outstanding gas barrier properties of a cellulose film even under high humidity, and which can minimize the contamination of and penetration into a film of water vapor and / or foreign bodies etc., which cause deterioration. The gas barrier laminate comprises a base material, and a gas barrier layer which is provided to at least one side of the base material. The gas barrier layer contains at least cellulose fibers and one or more types of water-soluble polymer. The fiber width of the cellulose fibers falls within the range of 3 nm to 50 nm.

Description

technical field [0001] The present invention relates to a laminate which is a gas barrier laminate which effectively utilizes a cellulose-based material as a natural resource, and which is composed of a layer made of cellulose fibers having a high water solubility and good compatibility with cellulose. molecule, making it excellent in flexibility, and exhibiting high gas barrier properties even in a high-humidity environment. Background technique [0002] In the field of packaging materials including food and pharmaceuticals, in order to protect the contents, gas barrier properties that can prevent gases such as oxygen and water vapor from permeating the packaging materials are required. [0003] Conventionally, aluminum and polyvinylidene chloride, which are less affected by temperature and humidity, have been used as gas barrier materials. However, when these materials are incinerated, in the case of aluminum, there will be a problem that the incineration residue clogs th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B23/02B32B27/20B65D65/40C08K5/5415C08K7/00C08L1/00C08L29/04C08J7/043C08J7/048C08J7/052
CPCC08J7/04B32B27/322B32B7/12C08J7/047C08J2367/02C08J2429/04C08K5/5419B32B27/36C08J2401/02C08L1/02C08L2205/16B32B27/08C08L29/04C08K2201/012C08K5/3435C08K3/16C08K2201/008Y10T428/31971Y10T428/31663C08J7/0427C08J7/052C08J7/048C08J7/043
Inventor 今井香朱子大森友美子
Owner TOPPAN PRINTING CO LTD
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