Invention Grant
- Patent Title: Shoe press belt for papermaking
- Patent Title (中): 用于造纸的鞋带
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Application No.: US12866195Application Date: 2009-02-04
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Publication No.: US07947154B2Publication Date: 2011-05-24
- Inventor: Takao Yazaki , Nobuharu Suzuki , Shintaro Yamazaki , Atsushi Ishino , Yuya Takamori , Ryo Umehara , Ai Tamura
- Applicant: Takao Yazaki , Nobuharu Suzuki , Shintaro Yamazaki , Atsushi Ishino , Yuya Takamori , Ryo Umehara , Ai Tamura
- Applicant Address: JP Tokyo
- Assignee: Ichikawa Co., Ltd.
- Current Assignee: Ichikawa Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-028971 20080208
- International Application: PCT/JP2009/051912 WO 20090204
- International Announcement: WO2009/099114 WO 20090813
- Main IPC: D21F3/02
- IPC: D21F3/02

Abstract:
A belt for papermaking shoe press is provided which comprises a reinforcing fibrous base (6) and a polyurethane layer (2) united therewith, the reinforcing fibrous base (6) having been embedded in the polyurethane layer (2). The belt includes a polyurethane layer obtained by curing a mixture comprising: a urethane prepolymer obtained by reacting a polyisocyanate compound selected among p-phenylene-diisocyanate, 4,4′-methylene-bis(phenyl isocyanate), and tolylene-diisocyanate with a polyol compound selected among polypropylene glycol, polytetramethylene glycol, and a polycarbonate diol; a hardener selected among an aliphatic diol compound, hydroquinone-bis-β-hydroxyethyl ether, and organic polyamine compound; and an aliphatic triol compound. Due to this layer, the shoe press belt for papermaking is excellent in wearing resistance and flexing fatigue resistance.
Public/Granted literature
- US20100314067A1 SHOE PRESS BELT FOR PAPERMAKING Public/Granted day:2010-12-16
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