Invention Grant
- Patent Title: Pellet-type foams of non-crosslinked polypropylene resin having lower melting point and process and device for producing the same and molded foams therefrom
- Patent Title (中): 具有较低熔点的非交联聚丙烯树脂的颗粒型泡沫及其制造方法及其制造装置
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Application No.: US10478337Application Date: 2002-05-15
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Publication No.: US07118362B2Publication Date: 2006-10-10
- Inventor: Hee-Sung Lee , Chul Lee , Ryeong Lee , Jea-Myung Kim
- Applicant: Hee-Sung Lee , Chul Lee , Ryeong Lee , Jea-Myung Kim
- Applicant Address: KR Kyunggi-do
- Assignee: A San Chemicals, Co., Ltd.
- Current Assignee: A San Chemicals, Co., Ltd.
- Current Assignee Address: KR Kyunggi-do
- Agency: Baker Botts L.L.P.
- Priority: KR2001/28241 20010523; KR2001/28242 20010523; KR2001/28243 20010523; KR2002/23836 20020430; KR2002/26539 20020514
- International Application: PCT/KR02/00915 WO 20020515
- International Announcement: WO02/094916 WO 20021128
- Main IPC: B29C47/82
- IPC: B29C47/82 ; B29C44/34
Abstract:
The present invention relates to a pellet-type non-crosslinked polypropylene foam having a melting point of 125 to 140° C., and a process and device for producing said foam. Since the pellet-type foams of non-crosslinked polypropylene of the present invention has a lower melting point and a closed cell content of 80% or more, it is advantageous to mold such foams. The present invention also relates to an article molded from the above pellet-type non-crosslinked polypropylene foams.
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