Title:
DEVICE FOR PRODUCING POLYURETHANE FOAM FOR POLISHING PAD
Document Type and Number:
Japanese Patent JP3455187
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device for producing a polyurethane foam for polishing pads, which can produce the homogeneous polyurethane foam having scarcely irregular specific gravity by a method not using hollow balloons.
SOLUTION: This device for producing the polyurethane foam for the polishing pads, comprising a tank in which a prepolymer and a foaming agent are charged and a mixer 2 for whipping the prepolymer, the foaming agent and a curing agent charged in the tank, is characterized in that the mixer comprises the first mixer blade 11 and the second mixer blade 21 having their rotation axes in the vertical direction and in that the first mixer blade 11 and the second mixer blade 21 are rotated in such the mutually opposite directions as engaging with each other and as not interfacing with each other.
Inventors:
Hiroshi Seyanagi
Kaoru Inoue
Kaoru Inoue
Application Number:
JP2001025343A
Publication Date:
October 14, 2003
Filing Date:
February 01, 2001
Export Citation:
Assignee:
Toyo Tire & Rubber Co., Ltd.
TOYO BOSEKI KABUSHIKI KAISHA
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
B24B37/00; B24B37/24; B24D13/14; B24D18/00; B29C44/34; B29C44/36; C08G18/00; C08G18/08; C08G18/10; C08J5/14; H01L21/304; C08G101/00; (IPC1-7): C08G18/00; C08J5/14
Domestic Patent References:
| JP2000178374A | ||||
| JP59179136A | ||||
| JP366170Y1 |
Attorney, Agent or Firm:
Takao Suzuki (3 others)
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