Invention Grant
- Patent Title: Method for manufacturing polishing pad
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Application No.: US13294835Application Date: 2011-11-11
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Publication No.: US08500932B2Publication Date: 2013-08-06
- Inventor: Takeshi Fukuda , Tsuguo Watanabe , Junji Hirose , Kenji Nakamura , Masato Doura
- Applicant: Takeshi Fukuda , Tsuguo Watanabe , Junji Hirose , Kenji Nakamura , Masato Doura
- Applicant Address: JP Osaka-shi
- Assignee: Toyo Tire & Rubber Co., Ltd.
- Current Assignee: Toyo Tire & Rubber Co., Ltd.
- Current Assignee Address: JP Osaka-shi
- Agency: Morrison & Foerster LLP
- Priority: JP2006-115890 20060419; JP2006-115897 20060419; JP2006-115904 20060419; JP2006-115907 20060419; JP2007-088388 20070329
- Main IPC: B29C39/18
- IPC: B29C39/18 ; B32B37/15

Abstract:
A method for manufacturing a polishing pad, which may be laminated, with a small number of manufacturing steps, high productivity and no peeling between a polishing layer and a cushion layer includes preparing a cell-dispersed urethane composition by a mechanical foaming method; continuously discharging the cell-dispersed urethane composition onto a face material, while feeding the face material; laminating another face material on the cell-dispersed urethane composition; curing the cell-dispersed urethane composition, while controlling its thickness to be uniform, so that a polishing layer including a polyurethane foam is formed; cutting the polishing layer parallel to the face into two pieces so that two long polishing layers each including the polishing layer and the face material are simultaneously formed; and cutting the long polishing layers to produce the polishing pad.
Public/Granted literature
- US20120108065A1 METHOD FOR MANUFACTURING POLISHING PAD Public/Granted day:2012-05-03
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