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Patent Searching and Data


Title:
LAMINATED SHEET
Document Type and Number:
WIPO Patent Application WO/2021/235500
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a laminated sheet which has a fiber layer containing microfibrous cellulose, and is provided with yellowing resistance and curling resistance. The present invention pertains to a laminated sheet obtained by directly layering at least two fiber layers containing fibrous cellulose, the substituent group introduction amount of which is less than 0.5mmol/g, and the fiber width of which is no greater than 1,000nm, wherein each fiber layer has a different fibrous cellulose content percentage in the thickness direction thereof.

Inventors:
MIKAMI EIICHI (JP)
NISHIKORI YOSHIHARU (JP)
FUSHIMI HAYATO (JP)
SHISHIDO RINA (JP)
KOIZUMI KAZUKI (JP)
Application Number:
PCT/JP2021/019069
Publication Date:
November 25, 2021
Filing Date:
May 19, 2021
Export Citation:
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Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
B32B27/10; B32B5/26; D21H11/18; D21H11/20; D21H27/30
Domestic Patent References:
WO2017073555A12017-05-04
WO2015182438A12015-12-03
WO2013176049A12013-11-28
WO2017126432A12017-07-27
Foreign References:
JP6680392B12020-04-15
Attorney, Agent or Firm:
SIKs & Co. (JP)
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