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1. (WO2018100781) METHOD FOR PRODUCING MEDIUM-DENSITY FIBERBOARD

Pub. No.:    WO/2018/100781    International Application No.:    PCT/JP2017/024309
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Tue Jul 04 01:59:59 CEST 2017
IPC: B27N 3/04
C09J 175/04
Applicants: KOYO SANGYO CO., LTD.
光洋産業株式会社
Inventors: KIMURA, Mitsukazu
木村 光一
ENDO, Kozo
遠藤 康三
ITABASHI, Saori
板橋 さおり
MAKINO, Kazuko
牧野 和子
FURUYA, Masaru
古矢 大
Title: METHOD FOR PRODUCING MEDIUM-DENSITY FIBERBOARD
Abstract:
According to the present invention, an organic isocyanate compound is prepared first as a main component of an adhesive, and a polyhydric alcohol having a weight average molecular weight of 60-200 is prepared as an additive of the adhesive. Then, the main component and additive of the adhesive are sprayed on a wooden fiber such that an isocyanuration catalyst is not included and 5-30 parts by mass of the polyhydric alcohol is included with respect to 100 parts by mass of the organic isocyanate compound. Next, the wooden fiber sprayed with the main component and additive of the adhesive is dried, and the water content of the wooden fiber is adjusted to 5.0-10.0%. In addition, the dried wooden fiber is hot-press molded at a temperature of 150-250°C under a pressure of 0.5-5.0 MPa.