公开(公告)号：US20120214886A1

公开(公告)日：2012-08-23

申请号：US13460143

申请日：2012-04-30

申请人： Minoru SUGAWARA ,  Yasuhiko OTSUKI ,  Ryoichi TSUNORI

发明人： Minoru SUGAWARA ,  Yasuhiko OTSUKI ,  Ryoichi TSUNORI

IPC分类号： C08J9/36

CPC分类号： C08J9/04 ,  B29C44/3469 ,  B29C44/507 ,  B29C48/00 ,  B29C48/022 ,  B29C48/03 ,  B29C48/30 ,  B29C48/32 ,  B29C2948/922 ,  B29C2948/92266 ,  B29C2948/92485 ,  B29C2948/92514 ,  B29C2948/92695 ,  B29C2948/92704 ,  B29C2948/92761 ,  B29C2948/92904 ,  B29C2948/9298 ,  B29K2023/12 ,  B29K2105/045 ,  B29L2031/3011 ,  B29L2031/3014 ,  B29L2031/3017 ,  C08J2201/03 ,  C08J2205/052 ,  C08J2323/12 ,  Y10T428/249977

摘要： Extruded propylene-based resin foam according to the present invention is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has a closed cell content of less than 40% and an expansion ratio of 10 or more. Since the extruded propylene-based resin foam has an open-cell structure in which a cell-broken state is formed at a desired level and has a high expansion ratio, each cell in the foam has a sound absorption performance, such that the extruded foam is excellent in sound absorption performance.

摘要翻译： 根据本发明的挤出丙烯类树脂发泡体通过挤出发泡丙烯类树脂形成，挤出的丙烯类树脂发泡体的闭孔含量小于40％，膨胀率为10以上。 由于挤出的丙烯类树脂发泡体具有开孔状结构，其中细胞破碎状态形成在期望的水平并且具有高膨胀比，泡沫中的每个泡孔都具有吸声性能，使得挤出的泡沫 具有优异的吸声性能。