公开(公告)号：DE602008005396D1

公开(公告)日：2011-04-21

申请号：DE602008005396

申请日：2008-12-10

Applicant: JSP CORP

Inventor： OIKAWA MASAHARU ,  NOHARA TOKUNOBU

IPC: B29C44/00

公开(公告)号：AT553149T

公开(公告)日：2012-04-15

申请号：AT08752701

申请日：2008-05-14

Applicant: JSP CORP

Inventor： SASAKI HIDEHIRO ,  OIKAWA MASAHARU ,  NOHARA TOKUNOBU

IPC: C08J9/18 ,  C08F10/06 ,  C08J9/00 ,  C08J9/12 ,  C08J9/232

Abstract: A polypropylene resin foamed bead from which a foamed bead molded article excelling in appearance, heat resistance and mechanical properties can be obtained at the molding temperature lower than that for conventional polypropylene resin foamed beads; and a foamed bead molded article obtained by molding the same. The polypropylene resin foamed bead is characterized by having such a crystal structure that in the first DSC curve obtained when the temperature of the foamed bead sample is raised from ordinary temperature to 200°C at a temperature rising rate of 2°C/min by a differential scanning calorimetry, there appear a main endothermic peak of 100° to 140°C endothermic peak apex temperature exhibiting 70 to 95% endothermic peak calorific value based on the total endothermic peak calorific value and two or more endothermic peaks exhibited on the high temperature side with respect to the main endothermic peak.

公开(公告)号：AT500945T

公开(公告)日：2011-03-15

申请号：AT08021413

申请日：2008-12-10

Applicant: JSP CORP

Inventor： OIKAWA MASAHARU ,  NOHARA TOKUNOBU

IPC: B29C44/00

Abstract: Expanded polypropylene resin beads having a melting point of not less than 120°C but less than 140°C, the melting point being determined from a DSC curve obtained by heat flux differential scanning calorimetry in accordance with JIS K7121-1987 in which a sample of 1 to 3 mg of the expanded polypropylene resin beads is heated to 200°C at a heating rate of 10°C/minute, then cooled to 30°C at a rate of 10°C/minute, and again heated from 30°C to 200°C at a heating rate of 10°C/minute to obtain the DSC curve. The expanded polypropylene resin beads has an apparent density Á 1 before heating and an apparent density Á 2 after being heated for 10 seconds with steam at a temperature higher by 5°C than the melting point thereof, wherein a ratio of Á 1 to Á 2 is not greater than 1.5.

公开(公告)号：EP2653283A4

公开(公告)日：2018-01-10

申请号：EP11849834

申请日：2011-12-08

Applicant: JSP CORP

Inventor： NOHARA TOKUNOBU ,  SHINOHARA MITSURU ,  CHIBA TAKUYA ,  OIKAWA MASAHARU

IPC: B29C44/00 ,  C08J9/16

CPC classification number: C08J9/122 ,  B29C44/04 ,  B29C44/445 ,  B29C67/205 ,  C08J9/0061 ,  C08J9/16 ,  C08J9/18 ,  C08J9/232 ,  C08J2201/03 ,  C08J2323/00 ,  C08J2323/12 ,  C08J2323/14 ,  C08J2423/00 ,  Y10T428/249921

Abstract: [Problem] The objective problem of the present invention is to provide a process for producing a polyolefin-based resin expanded beads molded article that is excellent in bending deflection characteristics, high in porosity, low in bulk density and light in weight. [Solution] A process for producing a polyolefin-based resin expanded beads molded article having interconnected void spaces, including filling, in a mold cavity, multi-layered polyolefin-based resin expanded beads each of which has a cylindrical, polyolefin-based resin expanded core layer and a polyolefin-based resin outer layer covering the expanded core layer and which satisfy specific requirements, introducing steam in the mold cavity to heat the multi-layered expanded beads filled in the mold cavity to fuse bond and mold the multi-layered expanded beads in the mold cavity.

公开(公告)号：EP2161298A4

公开(公告)日：2011-08-10

申请号：EP08752701

申请日：2008-05-14

Applicant: JSP CORP

Inventor： SASAKI HIDEHIRO ,  OIKAWA MASAHARU ,  NOHARA TOKUNOBU

IPC: C08J9/18 ,  C08F10/06 ,  C08J9/232

CPC classification number: C08J9/122 ,  C08F110/06 ,  C08F210/06 ,  C08J9/0061 ,  C08J9/18 ,  C08J9/232 ,  C08J2323/12 ,  C08J2423/00 ,  C08F2500/18 ,  C08F2500/21 ,  C08F210/16