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Title:
GAS BARRIER LAMINATE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/190269
Kind Code:
A1
Abstract:
Provided is a gas barrier laminate which is a thinner film and can exhibit excellent gas barrier properties even in a high-temperature and high-humidity environment. A gas barrier laminate comprises a plastic base (I) and a gas barrier layer (II) laminated on the plastic base, and has a total thickness of 100 μm or less, the gas barrier laminate being characterized in that: (1) the plastic base (I) comprises a metal-containing layer that contains a resin component and at least one among metal and a metal compound; (2) the total content of the metal and the metal compound in the metal-containing layer is 0.1-70 mass%; (3) the gas barrier layer (II) contains a polycarboxylic acid; (4) the metal-containing layer and the gas barrier layer are laminated to be in direct contact with each other; and (5) after hot water treatment at 95 °C for 30 minutes, the oxygen permeability of said gas barrier laminate is 300 mL/(m2·day·MPa) or less in an environment of a temperature of 40 °C and a humidity of 90% RH.

Inventors:
ASHIHARA HIROSHI (JP)
ARAKI GORO (JP)
MAEHARA ATSUSHI (JP)
Application Number:
PCT/JP2023/012060
Publication Date:
October 05, 2023
Filing Date:
March 25, 2023
Export Citation:
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Assignee:
UNITIKA LTD (JP)
International Classes:
B32B27/18; B29C55/14; B29C55/16; B32B27/30; B65D65/40; C08J7/048
Domestic Patent References:
WO2014042133A12014-03-20
Foreign References:
JP2017185652A2017-10-12
JP2018058280A2018-04-12
Attorney, Agent or Firm:
FUJII, Atsushi (JP)
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