Title:
INORGANIC-FIBER SHEET AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/230536
Kind Code:
A1
Abstract:
Provided is an inorganic-fiber sheet in which bio-soluble fibers are used and which has enhanced strength after calcination. This method for producing the inorganic-fiber sheet includes a step in which 15-50 wt% bentonite is mixed with inorganic fibers and organic fibers and the resultant mixture is formed into a sheet by a wet-process papermaking method. This method renders a safe inorganic-fiber sheet possible with a bio-soluble material. Furthermore, the mixing of bentonite in the papermaking step, in place of adding bentonite in a later step, brings about an advantage in that the production steps can be simplified.
Inventors:
IWASA YUTAKA (JP)
NAGANO TERUAKI (JP)
NAGANO TERUAKI (JP)
Application Number:
PCT/JP2022/015042
Publication Date:
November 03, 2022
Filing Date:
March 28, 2022
Export Citation:
Assignee:
AWA PAPER & TECH COMPANY INC (JP)
International Classes:
D21H17/68; D21H13/40
Foreign References:
| JPS5668198A | 1981-06-08 | |||
| JPH0247396A | 1990-02-16 | |||
| JP2012140311A | 2012-07-26 | |||
| JP2012514721A | 2012-06-28 | |||
| JP2021050421A | 2021-04-01 |
Attorney, Agent or Firm:
TOYOSU & CO. (JP)
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