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1. (WO2014192500) GAS-BARRIER PACKAGING MATERIAL

Pub. No.:    WO/2014/192500    International Application No.:    PCT/JP2014/062058
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Fri May 02 01:59:59 CEST 2014
IPC: B65D 65/40
B32B 27/36
Applicants: TOPPAN PRINTING CO., LTD.
凸版印刷株式会社
Inventors: OMORI Noboru
大森 望
KAWAGUCHI Katsumi
河口 克己
Title: GAS-BARRIER PACKAGING MATERIAL
Abstract:
This gas-barrier packaging material is provided with: a support body; an adhesive layer layered on the support body; a first barrier layer layered on the adhesive layer; a second barrier layer layered on the first barrier layer; and a protective layer layered on the second barrier layer and formed from a coating liquid containing a polyvalent metal compound, a polyester resin, and a dispersant which is a sodium salt of a polycarboxylic acid resin. Therein: given that the protective layer is contained in the amount of 100 wt%, the polyvalent metal compound is contained in the amount of 40-90 wt%; and when measuring the infrared absorption spectrum of the second barrier layer after separating the second barrier layer using a transmission method, the ratio (α/β) of the maximum peak height (α) in the range of 1490-1659cm-1 to the maximum peak height (β) in the range of 1660-1750cm-1 is less than 1.