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Patent Searching and Data


Title:
METHOD FOR PRODUCING FIBERBOARD
Document Type and Number:
WIPO Patent Application WO/2018/194096
Kind Code:
A1
Abstract:
An objective of the present invention is to provide a method for producing fiberboard with which fiberboard exhibiting high bend strength and high rigidity at a wide range of heating temperatures and a wide range of pressures and heating durations. In the present invention, fiberboard having an initial flexural modulus of at least 300MPa in a three-point bending test is obtained by forming a fiber web by aggregating core-sheath composite fibers, of the which the core component is formed from a copolymer comprising ethylene glycol and terephthalic acid and the sheath component is formed from a copolymer comprising ethylene glycol, adipic acid, terephthalic acid, isophthalic acid and/or diethylene glycol. The fiber web is then compressed in the thickness direction thereof and heated so that the sheath component softens or melts and the core-sheath composite fibers are fused together and molded into a flat plate shape.

Inventors:
HANAYA Kazutoshi (1-3 Kyutaro-machi 4-chome, Chuo-ku, Osaka-sh, Osaka 66, 〒5418566, JP)
AKAO Masaya (6-7 Nihonbashi-Hongoku-cho 4-chome, Chuo-k, Tokyo 21, 〒1038321, JP)
NAGATSUKA Yusuke (4-1 Hinakita-machi, Okazaki-sh, Aichi 11, 〒4448511, JP)
Application Number:
JP2018/016013
Publication Date:
October 25, 2018
Filing Date:
April 18, 2018
Export Citation:
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Assignee:
UNITIKA LTD. (50 Higashihon-machi 1-chome, Amagasaki-shi Hyogo, 24, 〒6600824, JP)
International Classes:
D04H1/541; D01F8/14
Domestic Patent References:
WO2006092835A12006-09-08
WO2018110524A12018-06-21
Foreign References:
JPH08188947A1996-07-23
JP2004107860A2004-04-08
JP2018009256A2018-01-18
Attorney, Agent or Firm:
OKUMURA Shigeki (3F Sakaisujichishima BLD, 1-1 Awaji-machi 2-chome, Chuo-ku, Osaka-sh, Osaka 47, 〒5410047, JP)
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