Title:
TRANSPARENT GAS BARRIER FILM
Document Type and Number:
WIPO Patent Application WO/2022/118710
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide an inexpensive transparent barrier film with excellent acid resistance in which the environment is taken into account and a plastic film created using a recycled resin from PET bottles is used. [Solution] A transparent gas barrier film having an aluminum oxide layer in which aluminum oxide is the main component on at least one surface of a substrate polyester film, wherein the transparent gas barrier film is characterized in that the absorption coefficient of the aluminum oxide layer immediately after vapor deposition is less than 0.03 nm-1, the vapor deposition film thickness is 6-10 nm, the substrate polyester film includes 50 wt% or more of a polyester resin recycled from PET bottles and is a polyester film obtained by biaxial stretching, and the isophthalic acid content, the limiting viscosity, the thermal shrinkage rate, the lamination strength, and the variation in thickness are within predetermined ranges.
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Inventors:
ISEKI KIYOSHI (JP)
Application Number:
PCT/JP2021/043001
Publication Date:
June 09, 2022
Filing Date:
November 24, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B9/00; B32B27/36; C23C14/08
Domestic Patent References:
| WO2015146496A1 | 2015-10-01 | |||
| WO2019031263A1 | 2019-02-14 | |||
| WO2020241621A1 | 2020-12-03 | |||
| WO2014050844A1 | 2014-04-03 | |||
| WO2015146496A1 | 2015-10-01 |
Foreign References:
| JP2017177343A | 2017-10-05 | |||
| JP2000025183A | 2000-01-25 | |||
| JP2005178100A | 2005-07-07 | |||
| JP2929609B2 | 1999-08-03 | |||
| JP2638797B2 | 1997-08-06 |
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