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Patent Searching and Data


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)
Application Number:
PCT/JP2021/035873
Publication Date:
April 07, 2022
Filing Date:
September 29, 2021
Export Citation:
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Assignee:
TOPPAN INC (JP)
International Classes:
B32B9/00; B32B27/32; B32B29/00; B65D65/40
Domestic Patent References:
WO2021010040A12021-01-21
Foreign References:
JP2002037312A2002-02-06
JPH07223686A1995-08-22
JPH07256811A1995-10-09
JP2004204366A2004-07-22
JP2002046775A2002-02-12
JPS56118992A1981-09-18
JPS57137337A1982-08-24
JP2020116880A2020-08-06
JP6944023B12021-10-06
JP2020069783A2020-05-07
Other References:
See also references of EP 4209342A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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