Invention Grant
- Patent Title: Layered sheets and processes for producing the same
- Patent Title (中): 分层片材及其制造方法
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Application No.: US11995311Application Date: 2006-07-07
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Publication No.: US07927452B2Publication Date: 2011-04-19
- Inventor: Junji Hirose , Takeshi Fukuda
- Applicant: Junji Hirose , Takeshi Fukuda
- 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: JP2005-206950 20050715; JP2006-072873 20060316; JP2006-072907 20060316; JP2006-072945 20060316; JP2006-072957 20060316
- International Application: PCT/JP2006/313597 WO 20060707
- International Announcement: WO2007/010766 WO 20070125
- Main IPC: B32B37/10
- IPC: B32B37/10 ; B32B5/18

Abstract:
Provided herein is a process for producing a layered sheet. The process involves preparing a cell dispersed urethane composition by a mechanical foaming method. The cell dispersed urethane composition is applied to a base material sheet and cured to produce a polyurethane foam layer of uniform thickness. A releasing sheet may be utilized to make the thickness of the polyurethane foamed layer uniform. Also, provided herein is a layered sheet produced by the above process. The polyurethane foamed layer may have spherical fine cells having an average cell diameter of 20 to 300 μm. The polyurethane foamed layer may have a specific gravity of 0.2 to 0.5. The polyurethane foamed layer may also have a Asker C hardness of 10 to 50 degrees.
Public/Granted literature
- US20090148687A1 LAYERED SHEETS AND PROCESSES FOR PRODUCING THE SAME Public/Granted day:2009-06-11
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