Title:
GAS BARRIER LAMINATE AND PACKAGING BAG
Document Type and Number:
WIPO Patent Application WO/2022/071398
Kind Code:
A1
Abstract:
A gas barrier laminate that comprises a paper base material and a vapor deposition layer, that is sealable by heat sealing, and wherein the weight per unit area of the paper base material is 30-100 g/m2, the water vapor permeability at 40ºC and 90% RH is 3 g/m2/d or less, the water vapor permeability at 40ºC and 90% RH as measured after placing the paper base material on the outside, folding, rolling a roller weighing 2 kg once over the result, and opening the fold is 4 g/m2/d or less, and the water vapor permeability at 40ºC and 90% RH as measured after placing the paper base material on the inside, folding, rolling a roller weighing 2 kg once over the result, and opening the fold is 4 g/m2/d or less.
Inventors:
KAMINAGA JUNICHI (JP)
KOSHIYAMA YOSHIKI (JP)
KOJIMA YUMIKO (JP)
ISHII RIKA (JP)
KOSHIYAMA YOSHIKI (JP)
KOJIMA YUMIKO (JP)
ISHII RIKA (JP)
Application Number:
PCT/JP2021/035873
Publication Date:
April 07, 2022
Filing Date:
September 29, 2021
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
B32B9/00; B32B27/32; B32B29/00; B65D65/40
Domestic Patent References:
WO2021010040A1 | 2021-01-21 |
Foreign References:
JP2002037312A | 2002-02-06 | |||
JPH07223686A | 1995-08-22 | |||
JPH07256811A | 1995-10-09 | |||
JP2004204366A | 2004-07-22 | |||
JP2002046775A | 2002-02-12 | |||
JPS56118992A | 1981-09-18 | |||
JPS57137337A | 1982-08-24 | |||
JP2020116880A | 2020-08-06 | |||
JP6944023B1 | 2021-10-06 | |||
JP2020069783A | 2020-05-07 |
Other References:
See also references of EP 4209342A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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