Title:
GAS BARRIER LAMINATE, PACKAGING MATERIAL, PACKAGING BODY AND PACKAGED ARTICLE
Document Type and Number:
Japanese Patent JP2022081953
Kind Code:
A
Abstract:
To provide a gas barrier laminate, a packaging material, a packaging body and a packaged article, simultaneously realizing transparency and gas barrier properties under a high-temperature high-humidity environment.SOLUTION: A gas barrier laminate includes a base material 1, an inorganic vapor-deposited layer 2 containing an inorganic oxide and a coating layer 3 in this order. The coating layer contains a carboxyl group-containing polymer (a), a polyvalent metal-containing particle (b), a surfactant (c) and a silicon-containing compound (d). The silicon-containing compound (d) is at least one kind selected from a group consisting of a silane coupling agent having a specific structure, a hydrolyzate thereof, and a condensation product thereof. A mole ratio (dt/at) expressed by [a mole number (dt) of the silicon-containing compound (d)/a mole number (at) of a carboxyl group in the carboxyl group-containing polymer (a)] is 0.15 to 6.10%, inclusive. Film thickness of the coating layer is 230 to 600 nm, inclusive. However, the above (dt) is a mass obtained by converting the silicon-containing compound (d) to the silane coupling agent.SELECTED DRAWING: Figure 1
Inventors:
MAEDA MASAKI
Application Number:
JP2020193219A
Publication Date:
June 01, 2022
Filing Date:
November 20, 2020
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
B32B9/00; B32B27/18; B32B27/30; B65D65/40
Attorney, Agent or Firm:
Masatoshi Kurata
Nobuhisa Nogawa
Tadashi Inoue
Naoki Kono
Shigeru Iino
Sanae Kaneko
Nobuhisa Nogawa
Tadashi Inoue
Naoki Kono
Shigeru Iino
Sanae Kaneko
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