Title:
METHOD FOR MANUFACTURING PAPER-MAKING BARRIER SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2020/203616
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method for manufacturing a paper-making barrier substrate in which an occurrence of coating unevenness in wet-on-wet coating with a curtain coating method is suppressed. As a solution, the present invention provides a method for manufacturing a paper-making barrier substrate, the method comprising: a step for coating, through a curtain coating method, a paper substrate with a water vapor barrier layer coating liquid containing at least a water vapor barrier resin and a pigment to form a water vapor barrier; and a step for coating, through the curtain coating method, the water vapor barrier layer with a gas barrier layer coating liquid containing at least one type polymer selected from water-soluble polymers and water-dispersible polymers to form a gas barrier layer without interposing a drying step between the two coating steps. The B-type viscosity of the gas barrier layer coating liquid is greater than or equal to the B-type viscosity of the water vapor barrier layer coating liquid.
Inventors:
WATANABE KENTA (JP)
OISHI YURI (JP)
TSUDA SATOSHI (JP)
OKAMOTO MASASHI (FI)
KOYAMOTO HIROSHI (JP)
OISHI YURI (JP)
TSUDA SATOSHI (JP)
OKAMOTO MASASHI (FI)
KOYAMOTO HIROSHI (JP)
Application Number:
PCT/JP2020/013558
Publication Date:
October 08, 2020
Filing Date:
March 26, 2020
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
JUJO THERMAL OY (FI)
JUJO THERMAL OY (FI)
International Classes:
D21H23/48; D21H19/36; D21H19/82; D21H27/10
Domestic Patent References:
| WO2012133091A1 | 2012-10-04 | |||
| WO2017170462A1 | 2017-10-05 | |||
| WO2013140620A1 | 2013-09-26 | |||
| WO2001054828A1 | 2001-08-02 | |||
| WO2020154167A1 | 2020-07-30 |
Foreign References:
| JP2004148307A | 2004-05-27 | |||
| JP2005270954A | 2005-10-06 | |||
| JP2010529316A | 2010-08-26 | |||
| JPS5485811A | 1979-07-07 | |||
| JPS5474761A | 1979-06-15 | |||
| JPH06294099A | 1994-10-21 | |||
| EP2777934A1 | 2014-09-17 |
Other References:
ANONYMOUS: "Technical Datasheet PRIMACOR™ 3460", UNINVERSAL SELECTOR, 19 September 2023 (2023-09-19), pages 1 - 3, XP093130287
BABAIE A., MADADKHANI S., STOEBER B.: "Evaporation-driven low Reynolds number vortices in a cavity", PHYSICS OF FLUIDS, vol. 26, no. 3, 1 March 2014 (2014-03-01), pages 1 - 22, XP093130207
See also references of EP 3951054A4
BABAIE A., MADADKHANI S., STOEBER B.: "Evaporation-driven low Reynolds number vortices in a cavity", PHYSICS OF FLUIDS, vol. 26, no. 3, 1 March 2014 (2014-03-01), pages 1 - 22, XP093130207
See also references of EP 3951054A4
Attorney, Agent or Firm:
YAMADA Yasuyuki et al. (JP)
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