Invention Grant
US07678839B2 Expanded polypropylene resin beads, method of producing foam molding of expanded polypropylene resin beads and foam molding obtained by the method
有权
膨胀聚丙烯树脂珠，发泡聚丙烯树脂珠的发泡成型方法和通过该方法获得的泡沫成型
- Patent Title: Expanded polypropylene resin beads, method of producing foam molding of expanded polypropylene resin beads and foam molding obtained by the method
- Patent Title (中): 膨胀聚丙烯树脂珠，发泡聚丙烯树脂珠的发泡成型方法和通过该方法获得的泡沫成型
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Application No.: US11387787Application Date: 2006-03-24
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Publication No.: US07678839B2Publication Date: 2010-03-16
- Inventor: Hidehiro Sasaki
- Applicant: Hidehiro Sasaki
- Applicant Address: JP
- Assignee: JSP Corporation
- Current Assignee: JSP Corporation
- Current Assignee Address: JP
- Agency: Bacon & Thomas, PLLC
- Priority: JP2005-095066 20050329
- Main IPC: C08J9/00
- IPC: C08J9/00 ; C08J9/16
Abstract:
Expanded beads including cell walls which define a plurality of cells and which comprise a base resin containing a polypropylene resin, each of the beads having a through hole extending therein from one end to the other end. The expanded beads have a maximum diameter D0 (mm), an average cell diameter LCV in a radial direction, an average cell diameter LCH in a circumferential direction and a maximum through hole diameter HD (mm) satisfying the following conditions: LCV/LCH is at least 1.05, HD/D0 is 0.08 to 0.4 and the ratio HD/LCV is 0.1 to 10, where D0, LCV and LCH are as defined in the specification. The expanded beads may give a foam molding by an in-mold molding method.
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