Gas-barrier film and process for producing same, and gas-barrier laminate

A technology of gas barrier and manufacturing method, applied in chemical instruments and methods, coatings, layered products, etc., to achieve the effects of low haze value, suppression of background reflection, and excellent transparency

Active Publication Date: 2014-12-03
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As mentioned above, in order to exert high gas barrier properties for packaging applications, various researches have been carried out on gas barrier films. A gas-barrier film of a mixture of particles (for example, refer to Patent Document 1), etc., but this proposal is aimed at improving the barrier property or stability, and does not focus on improving transparency, suppressing appearance defects, suppressing background reflection, glare etc.

Method used

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  • Gas-barrier film and process for producing same, and gas-barrier laminate
  • Gas-barrier film and process for producing same, and gas-barrier laminate

Examples

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preparation example Construction

[0091] The preparation method of the silicon compound particles is not particularly limited, for example, the 2nd page 16th line to the 10th page 26th line of the International Publication Pamphlet WO95 / 17349 or the [0012] to [0031 of the Japanese Patent Laid-Open No. 6-16414 A ], specifically, by hydrolyzing and aging alkoxysilane, dissolving water glass, performing ion exchange, and concentrating. The calculation of the functional group ratio when using the former preparation method can be performed, for example, by the method described in the above-mentioned International Publication Pamphlet on page 15, line 19 to page 16, line 8, and when the latter preparation method is used, it can be estimated that 100 silanol groups mol %.

[0092] In general, for the use of alkoxysilane, it is known to apply a coating solution in which alkoxysilane or its hydrolyzate is mixed in resin to a film having an inorganic layer, but since alkoxysilane or its hydrolyzate The cohesion stress ...

Embodiment

[0146] Next, the present invention will be described in further detail through examples, but the present invention is not limited by these examples.

[0147] The measurement methods of the properties of the gas barrier films and gas barrier laminates obtained in each example are shown below.

[0148]

[0149] Based on the conditions of JIS Z0222 "Moisture-proof packaging container test method for water vapor transmission" and JIS Z0208 "moisture-proof packaging material water vapor transmission test method", the following methods were used for evaluation.

[0150] Use 2 laminated films or laminates with a moisture permeable area of ​​10.0cm×10.0cm square, add about 20g of anhydrous calcium chloride as a moisture absorbent, make a bag with four sides sealed, and put the bag in a temperature of 40°C and a relative humidity In a 90% constant temperature and humidity device or a constant temperature and humidity device with a temperature of 60°C and a relative humidity of 90%, t...

preparation example 1

[0174] The preparation of preparation example 1 anchor coating agent

[0175] An isocyanate compound ("CORONATE L" manufactured by Nippon Polyurethane Industry Co., Ltd.) and a saturated polyester ("Vylon 300" manufactured by Toyobo Co., Ltd. with a number average molecular weight of 23,000) were mixed at a mass ratio of 1:1 to prepare an anchor coating agent.

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Abstract

Provided are a gas-barrier film, etc. which have a low haze and excellent transparency, cause no appearance failure, and are effective in inhibiting reflection, and which have excellent impermeability to water vapor. The gas-barrier film comprises a base film, an inorganic layer formed on at least one surface thereof, and a resin layer formed on the inorganic layer and comprising polyvinyl alcohol and a silicon compound. The film has values of b* and a*, determined in accordance with JIS Z8722, of -1.0 to 1.0 and -1.0 to 1.0, respectively.

Description

technical field [0001] The present invention relates to a gas barrier film, a method for producing the same, and a gas barrier laminate. Background technique [0002] Gas-barrier plastic films, which use plastic film as a base material and form an inorganic film such as silicon oxide on the surface, are widely used in the packaging of items that need to be isolated from various gases such as water vapor and oxygen, such as for preventing food, industrial supplies and Deteriorated packaging of pharmaceuticals, etc. [0003] Film packaging materials used for this purpose are desired to have high gas barrier properties against water vapor and oxygen in order to preserve food and medicine for a long period of time, and a lot of developments have been made. [0004] In recent years, with the rapid advancement of electronic technology, the demand for electronic equipment such as liquid crystal panels, organic EL panels, touch panels, electronic paper, and solar cells has continue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B27/30C23C14/06C23C16/42
CPCC23C14/06C23C16/42C23C28/04C23C14/10C23C14/58C23C16/30C23C28/00
Inventor 杉田健太郎大川原千春山内康嗣
Owner MITSUBISHI CHEM CORP
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