Invention Grant
US09193842B2 Method for producing noncrosslinked polyethylene resin expanded particle (first stage expanded particle) and re-expanded noncrosslinked polyethylene resin expanded particle
有权
非交联聚乙烯树脂发泡粒子（第一阶段发泡粒子）和再膨胀非交联聚乙烯树脂发泡粒子的制造方法
- Patent Title: Method for producing noncrosslinked polyethylene resin expanded particle (first stage expanded particle) and re-expanded noncrosslinked polyethylene resin expanded particle
- Patent Title (中): 非交联聚乙烯树脂发泡粒子（第一阶段发泡粒子）和再膨胀非交联聚乙烯树脂发泡粒子的制造方法
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Application No.: US14168930Application Date: 2014-01-30
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Publication No.: US09193842B2Publication Date: 2015-11-24
- Inventor: Kiyotaka Nakayama
- Applicant: KANEKA CORPORATION
- Applicant Address: JP Osaka
- Assignee: KANEKA CORPORATION
- Current Assignee: KANEKA CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2010-007234 20100115
- Main IPC: C08F110/02
- IPC: C08F110/02 ; B29C44/02 ; C08L23/08 ; C08J9/16 ; C08J9/00 ; C08J9/12 ; C08J9/18 ; C08J9/232 ; C08L23/04 ; C08J9/228
Abstract:
A noncrosslinked polyethylene resin expanded particle is provided having a bulk density BD in a range of 10 g/L to 100 g/L, the particle being obtained by expanding a polyethylene resin particle whose density is in a range of 0.920 g/cm3 to 0.940 g/cm3, the noncrosslinked polyethylene resin expanded particle having a shrinkage factor in a range of 2% to 30%, the shrinkage factor being obtained by the following formula (1): Shrinkage Factor=(BD−VBD)×100/VBD (1), wherein: the BD of the noncrosslinked polyethylene expanded particle is a bulk density at 23° C. and at 0.1 MPa (at a normal atmospheric pressure); and the VBD of the noncrosslinked polyethylene expanded particle is a bulk density at 23° C. and at a reduced pressure of 0.002 MPa or less.
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