公开(公告)号：DE602004028977D1

公开(公告)日：2010-10-21

申请号：DE602004028977

申请日：2004-02-23

Applicant: JSP CORP

Inventor： IMANARI DAISUKE ,  OKUDA MASAYASU ,  KOGURE NAOCHIKA ,  NAITO MASATO

IPC: B29C49/22 ,  B32B5/18 ,  B29C47/04 ,  B29C48/32 ,  B29C49/00 ,  B29C49/04 ,  B29K23/00 ,  B29K101/12 ,  B29K105/04 ,  B29L9/00 ,  B29L23/00 ,  B32B27/32

公开(公告)号：CA2555549C

公开(公告)日：2013-06-18

申请号：CA2555549

申请日：2006-08-03

Applicant: JSP CORP

Inventor： IMANARI DAISUKE ,  TAKASE KENICHI ,  OKUDA MASAYASU ,  NAITO MASATO

IPC: B29C49/04 ,  B29C44/02 ,  B32B5/20

Abstract: A method for producing a hollow foam molding having a thin and uniform wall thickness, including extruding a foamable melt containing a polypropylene resin having an equilibrium compliance J eo of 0.5 × 10 -3 to 1.8 × 10 -3 Pa-1 and a swell ratio S w of 2.5 or less and a physical blowing agent through a die to obtain a parison having a softened polypropylene resin foam layer, placing the parison in a mold, and blowing a gas into the parison to obtain a hollow foam molding having a hardened polypropylene resin foam layer with an apparent density of 0.35 to 0.65 g/cm3.

公开(公告)号：DE69724753D1

公开(公告)日：2003-10-16

申请号：DE69724753

申请日：1997-12-20

Applicant: JSP CORP

Inventor： NAITO MASATO ,  KITAHAMA TAKASHI ,  NARITA KEIGO ,  KIKUSAWA RYOU

IPC: B29C67/20 ,  B29C44/30 ,  B29C44/44 ,  B29K23/00 ,  B29K105/04

Abstract: Disclosed herein is a method for continuously producing an expansion-molded article, comprising feeding foamed particles between a belt continuously traveling along the upper surface within a passageway defined by structural members and having a rectangular form in section and a belt continuously traveling along the lower surface within the passageway, and then causing the foamed particles to successively pass through a super heated steam-feeding region and a cooling region within the passageway. The foamed particles used are foamed particles of a polyolefin resin, in which a recovery factor from compression defined by the equation (1): wherein V1 is the original bulk volume of the foamed particles, and V2 is a bulk volume of the foamed particles measured upon elapsed time of 10 seconds after the foamed particles are compressed to a bulk volume of 60% on the original bulk volume, and the compressive force is then removed, is at least 80%. The foamed particles are transferred to the super heated steam-feeding region after the foamed particles are compressed on the upstream side of the super heated steam-feeding region, and then released from a part or the whole of the compression. An apparatus for producing the expansion-molded article is also disclosed.

公开(公告)号：EP1327656A4

公开(公告)日：2005-04-13

申请号：EP01965660

申请日：2001-09-14

Applicant: JSP CORP

Inventor： NAITO MASATO ,  GOKURAKU HIROYUKI ,  IMANARI DAISUKE ,  NISHIYAMA NORITOSHI

IPC: B29C44/50 ,  C08F6/00 ,  C08F6/10 ,  F16L59/065 ,  C08J9/14 ,  B29C47/00 ,  B29C47/76 ,  B29K25/00 ,  B29K105/04 ,  C08L25/06 ,  F16L59/02

CPC classification number: B29C44/505 ,  Y10T428/233 ,  Y10T428/239 ,  Y10T428/249953 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/249991 ,  Y10T428/249992

Abstract: An open-cell polystyrene resin foam having an organic volatile content lower than 100 ppm. It is suitable for use as a core material for soundproofing materials or vacuum heat insulation materials. The open-cell foam can be produced by melt-kneading a polystyrene resin having an organic volatile content of 100 ppm or higher in an extruder together with water to cause the organic volatiles to undergo azeotropy, sucking up the resultant vapor through the vent, injecting a foaming agent, kneading the resultant mixture, and then extruding the mixture at a low pressure to foam it.

公开(公告)号：AT513004T

公开(公告)日：2011-07-15

申请号：AT05023248

申请日：2005-10-25

Applicant: JSP CORP

Inventor： TAKASE KENICHI ,  OKUDA MASAYASU ,  NAITO MASATO

IPC: C08J9/12 ,  B29C44/04 ,  B29C44/08 ,  B29C49/04 ,  C08L67/04

公开(公告)号：CA2024228C

公开(公告)日：1996-06-18

申请号：CA2024228

申请日：1990-08-29

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  NAITO MASATO ,  SASAKI HIDEHIRO

IPC: C08J9/22 ,  C08J9/00 ,  C08J9/224 ,  C08J9/16

Abstract: A process for the production of expanded resin particles is disclosed, wherein an aqueous dispersion containing expandable particles of a polyolefin resin is discharged at a temperature higher than the softening point of the resin from a high pressure condition to a low pressure condition to expand the expandable particles and wherein the expandable particles contain fine particles of an inorganic material coated with an agent selected from isopropyltriisostearic titanate, tetraoctadecyl titanate, acetoalkoxyaluminum diisopropylates, stearic acid, methyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane and vinyltriethoxysilane.

公开(公告)号：DE69022814T2

公开(公告)日：1996-05-23

申请号：DE69022814

申请日：1990-11-24

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  SASAKI HIDEHIRO ,  NAITO MASATO ,  TURUGAI KAZUO

IPC: C08J9/228 ,  C08J9/22

Abstract: Prefoamed synthetic resin particles are produced by dispersing foamable resin particles in a dispersing medium within a closed vessel, said foamable resin particles containing a water-soluble inorganic substance and a blowing agent therein, and then releasing the foamable resin particles and the medium into an atmosphere of a pressure lower than that inside the vessel, whereby the thus-released foamable resin particles are allowed to undergo foaming.

公开(公告)号：CA2024228A1

公开(公告)日：1991-03-01

申请号：CA2024228

申请日：1990-08-29

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  NAITO MASATO ,  SASAKI HIDEHIRO

IPC: C08J9/22 ,  C08J9/00 ,  C08J9/224

公开(公告)号：DE60322159D1

公开(公告)日：2008-08-28

申请号：DE60322159

申请日：2003-09-24

Applicant: JSP CORP

Inventor： IMANARI DAISUKE ,  AKIYAMA TERUYUKI ,  KOGURE NAOCHIKA ,  NAITO MASATO

IPC: B29C49/04 ,  C08J9/04 ,  B29C44/06 ,  B29C44/42 ,  B29C47/04 ,  B29C49/22 ,  B29K23/00 ,  B29K105/04 ,  B29L9/00

Abstract: A polypropylene resin hollow molded foam article has polypropylene resin foam layer (21) formed by placing softened cylindrical foam (2) in metal mold. The melt tension at 230[deg]C of the resin that forms the foam layer is 10-49 mN. The foam layer has apparent density of less than 0.3 g/cm 3>. An independent claim is also included for a process for production of polypropylene resin hollow molded foam article in which a cylindrical foam having foam layer is formed by extruding from a die (3) a foamable molten resin comprising a base resin containing a foaming agent, and then placing the foam in a metal mold while in a softened state. The base resin consists of: (i) a resin composed of polypropylene resin (a) (20-70 wt.%) with melt tension of >= 98 mN and melt flow rate of 0.5-15 g/10 minutes and polypropylene resin (b) (30-80 wt.%) with melt tension of less than 30 mN and melt flow rate of 2-30 g/10 minutes; (ii) resin composed of polypropylene resin (c) (30-70 wt.%) with melt tension of 30-98 mN and melt flow rate of 2-15 g/10 minutes and 30-702 wt.% of (b); (iii) resin composed of 20-70 wt.% (a) and less than 80 wt.% of (c); or (iv) resin composed of (a) (5-65 wt.%) (b) (30-78 wt.%), and (c) (5-65 wt.%). The resin has a composition within the bounds (including the lines) of a quadrangle ABCD defined by the four xyz coordinates A (17, 78, 5), B (5, 72, 23), C (5, 30, 65) and D (65, 30, 5), where resin (a) is x wt.%, (b) is y wt.% and (c) is z wt.% in a triangular component graph in which the upper triangle is marked as 100 wt.% (a), the lower left vertex is marked as 100 wt.% (b) and the lower right vertex is 100 wt.% (c).

公开(公告)号：AT401188T

公开(公告)日：2008-08-15

申请号：AT03021516

申请日：2003-09-24

Applicant: JSP CORP

Inventor： IMANARI DAISUKE ,  AKIYAMA TERUYUKI ,  KOGURE NAOCHIKA ,  NAITO MASATO

IPC: B29C49/04 ,  C08J9/04 ,  B29C44/06 ,  B29C44/42 ,  B29C47/04 ,  B29C49/22 ,  B29K23/00 ,  B29K105/04 ,  B29L9/00

Abstract: A polypropylene resin hollow molded foam article has polypropylene resin foam layer (21) formed by placing softened cylindrical foam (2) in metal mold. The melt tension at 230[deg]C of the resin that forms the foam layer is 10-49 mN. The foam layer has apparent density of less than 0.3 g/cm 3>. An independent claim is also included for a process for production of polypropylene resin hollow molded foam article in which a cylindrical foam having foam layer is formed by extruding from a die (3) a foamable molten resin comprising a base resin containing a foaming agent, and then placing the foam in a metal mold while in a softened state. The base resin consists of: (i) a resin composed of polypropylene resin (a) (20-70 wt.%) with melt tension of >= 98 mN and melt flow rate of 0.5-15 g/10 minutes and polypropylene resin (b) (30-80 wt.%) with melt tension of less than 30 mN and melt flow rate of 2-30 g/10 minutes; (ii) resin composed of polypropylene resin (c) (30-70 wt.%) with melt tension of 30-98 mN and melt flow rate of 2-15 g/10 minutes and 30-702 wt.% of (b); (iii) resin composed of 20-70 wt.% (a) and less than 80 wt.% of (c); or (iv) resin composed of (a) (5-65 wt.%) (b) (30-78 wt.%), and (c) (5-65 wt.%). The resin has a composition within the bounds (including the lines) of a quadrangle ABCD defined by the four xyz coordinates A (17, 78, 5), B (5, 72, 23), C (5, 30, 65) and D (65, 30, 5), where resin (a) is x wt.%, (b) is y wt.% and (c) is z wt.% in a triangular component graph in which the upper triangle is marked as 100 wt.% (a), the lower left vertex is marked as 100 wt.% (b) and the lower right vertex is 100 wt.% (c).