Title:
GAS BARRIER LAMINATE AND GAS BARRIER SEAL SHEET
Document Type and Number:
Japanese Patent JP2022158269
Kind Code:
A
Abstract:
To provide a gas barrier laminate having excellent water resistance, moisture barrier property and gas barrier property, further capable of exhibiting sufficient gas barrier property even after imparting a sealant with an aqueous medium.SOLUTION: A gas barrier laminate having a water vapor barrier layer and a gas barrier layer in this order on at least one surface of a paper substrate, wherein the gas barrier layer contains a water-suspendable polymer, and the wet tension of the surface of the gas barrier layer is 60 mN/m or more and 70 mN/m or less, and the Cobb water absorbency of the gas barrier layer surface measured under conditions of a temperature of 23°C and a contact time of 120 seconds is 2.5 g/m2 or less, and when a laminate sheet is formed by adhering a non-stretched polypropylene film having a thickness of 20 μm on the gas barrier layer surface of the gas barrier laminate, the oxygen permeability of the laminated sheet measured at a temperature of 23°C and a relative humidity of 85% is 20 mL/m2 day atm or less.SELECTED DRAWING: None
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Inventors:
NOISHIKI YASUTOMO
SHAMOTO YUTA
WAKABAYASHI MISAKI
SHAMOTO YUTA
WAKABAYASHI MISAKI
Application Number:
JP2021063036A
Publication Date:
October 17, 2022
Filing Date:
April 01, 2021
Export Citation:
Assignee:
OJI HOLDINGS CORP
International Classes:
B32B27/10; B32B29/00; B65D65/40
Attorney, Agent or Firm:
Patent Attorney Corporation Shuwa Patent Office