发明授权
- 专利标题： Process for producing polyurethane foam
- 专利标题（中）： 生产聚氨酯泡沫的方法
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申请号： US12593174申请日： 2008-02-29
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公开(公告)号： US08314029B2公开(公告)日： 2012-11-20
- 发明人: Junji Hirose , Takeshi Fukuda , Masato Doura , Akinori Sato , Kenji Nakamura
- 申请人： Junji Hirose , Takeshi Fukuda , Masato Doura , Akinori Sato , Kenji Nakamura
- 申请人地址： JP Osaka-shi
- 专利权人： Toyo Tire & Rubber Co., Ltd.
- 当前专利权人： Toyo Tire & Rubber Co., Ltd.
- 当前专利权人地址： JP Osaka-shi
- 代理机构： Morrison & Foerster LLP
- 优先权： JP2007-081403 20070327
- 国际申请： PCT/JP2008/053602 WO 20080229
- 国际公布： WO2008/126497 WO 20081023
- 主分类号： H01L21/302
- IPC分类号： H01L21/302
摘要：
A method for manufacturing a polishing pad containing substantially spherical cells and having high thickness accuracy includes preparing a cell-dispersed urethane composition by a mechanical foaming method; continuously discharging the cell-dispersed urethane composition from a single discharge port to a substantially central portion in the width direction of a face material A, while feeding the face material A; laminating a face material B on the cell-dispersed urethane composition; then uniformly adjusting the thickness of the cell-dispersed urethane composition by thickness adjusting means; curing the cell-dispersed urethane composition with the thickness adjusted in the preceding step without applying any additional load to the composition so that a polishing sheet including a polyurethane foam is formed; and cutting the polishing sheet.
公开/授权文献
- US20100120249A1 PROCESS FOR PRODUCING POLYURETHANE FOAM 公开/授权日：2010-05-13
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