公开(公告)号：US20140145364A1

公开(公告)日：2014-05-29

申请号：US14168930

申请日：2014-01-30

Applicant: KANEKA CORPORATION

Inventor： Kiyotaka NAKAYAMA

IPC: C08J9/228

CPC classification number: C08J9/16 ,  C08J9/0023 ,  C08J9/12 ,  C08J9/18 ,  C08J9/228 ,  C08J9/232 ,  C08J2201/034 ,  C08J2323/06 ,  C08J2323/08 ,  C08L23/04

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.

Abstract translation: 提供了一种非交联聚乙烯树脂发泡粒子，其堆积密度BD在10g / L至100g / L的范围内，该颗粒通过使密度在0.920g / cm 3至0.940的范围内的聚乙烯树脂颗粒膨胀而获得 g / cm3，收缩率在2％〜30％的收缩率的非交联聚乙烯树脂发泡体，收缩率由下式（1）求出：收缩系数=（BD-VBD）×100 / VBD（ 1），其中：非交联聚乙烯发泡粒子的BD为23℃，0.1MPa（正常大气压）时的体积密度; 非交联聚乙烯发泡粒子的VBD为23℃，0.002MPa以下的减压下的体积密度。