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Title:
GAS BARRIER FILM, LAMINATE, AND PACKAGING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/270490
Kind Code:
A1
Abstract:
This gas barrier film comprises a substrate having polyethylene as the main resin component, and an inorganic oxide layer formed on a first surface side of the substrate. The birefringence ΔN of a first surface, calculated on the basis of measurement by a parallel Nicol rotation method, is 0-0.007, and the proportion of the polyethylene in the gas barrier film as a whole is at least 90 mass%.

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Inventors:
TANAKA RYOTA (JP)
OMORI HARUKA (JP)
OSAWA KENTA (JP)
MATSUHISA KENJI (JP)
Application Number:
PCT/JP2022/024648
Publication Date:
December 29, 2022
Filing Date:
June 21, 2022
Export Citation:
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Assignee:
TOPPAN INC (JP)
International Classes:
B32B9/00; B32B27/32; B65D65/40; C09J7/30
Domestic Patent References:
WO2021029156A12021-02-18
WO2019189092A12019-10-03
WO2003009998A12003-02-06
Foreign References:
JP2013022918A2013-02-04
JP2000355068A2000-12-26
JP2004203023A2004-07-22
JP2001157705A2001-06-12
US20190022988A12019-01-24
US20110226723A12011-09-22
JP2021102659A2021-07-15
JP2021102660A2021-07-15
JP6191221B22017-09-06
JP2000254994A2000-09-19
JP4373797B22009-11-25
JP2020055157A2020-04-09
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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