Title:
METHOD OF MANUFACTURING POLYURETHANE FOAM FOR POLISHING PAD WITH MICROCAVITY
Document Type and Number:
Japanese Patent JP2005169571
Kind Code:
A
Abstract:
To provide a method of manufacturing polyurethane foam with micro and uniform cavities.
The method of manufacturing the polyurethane foam for a polishing pad with microcavities comprises an agitating process for mixing an isocyanate component and a reaction component containing an active hydrogen group containing a compound, in a container by an agitator with an agitating blade to obtain a foaming reaction liquid; a process for extracting the agitating blade from the foaming reaction liquid; and a reaction process for reaction-curing the foaming reaction liquid. In the agitating process, a scraper makes at least one round along the internal wall surface of a container.
Inventors:
KAZUNO ATSUSHI
KIMURA TAKESHI
NAKAMORI MASAHIKO
SHIMOMURA TETSUO
YAMADA TAKATOSHI
KIMURA TAKESHI
NAKAMORI MASAHIKO
SHIMOMURA TETSUO
YAMADA TAKATOSHI
Application Number:
JP2003413594A
Publication Date:
June 30, 2005
Filing Date:
December 11, 2003
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO
International Classes:
B24B37/20; B24B37/24; B29C39/02; B29C39/22; C08G18/00; H01L21/304; B29K75/00; B29K105/04; C08G101/00; (IPC1-7): B24B37/00; B29C39/02; B29C39/22; C08G18/00; H01L21/304
Attorney, Agent or Firm:
Aoyama Aoi
Muneo Yamamoto
Masaishi Nishishita
Muneo Yamamoto
Masaishi Nishishita
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