公开(公告)号：JP2007168705A

公开(公告)日：2007-07-05

申请号：JP2005372080

申请日：2005-12-26

Applicant: Jsp Corp ,  Nissan Motor Co Ltd ,  日産自動車株式会社 ,  株式会社ジェイエスピー

Inventor： SHIOTANI AKIRA ,  HASHIMOTO KEIICHI ,  YONEYAMA YASUHIKO ,  TANIGUCHI MASANORI ,  HARIGAI TOSHIYUKI

IPC: B60R19/18 ,  F16F7/00

CPC classification number: B60R19/18 ,  B60R2019/184 ,  B60R2019/1873

Abstract: PROBLEM TO BE SOLVED: To provide an energy absorbing member having an excellent impact absorbing effect.
SOLUTION: The energy absorbing member is made of a synthetic resin foam body formed in a direction substantially orthogonal to an impact pressure receiving surface, and provided with two ribs 3 substantially parallel with each other. A ratio H/T between the height H(mm) and the thickness T(mm) of two ribs 3 is 3 to 5. On the impact pressure receiving surface and/or the opposite surface of the impact pressure receiving surface, a notch 6 is formed at an outer corner along the width direction of the two ribs 3.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供具有优异的冲击吸收效果的能量吸收构件。 解决方案：能量吸收构件由合成树脂发泡体制成，该合成树脂泡沫体在基本上与冲击压力接收表面正交的方向上形成，并且设置有基本上彼此平行的两个肋3。 两个肋3的高度H（mm）和厚度T（mm）之间的比率H / T为3〜5。在冲击受压面和/或冲击受力面的相对面上，凹口6 形成在两个肋3的宽度方向的外角处。（C）2007，JPO＆INPIT

公开(公告)号：JP2004082957A

公开(公告)日：2004-03-18

申请号：JP2002249532

申请日：2002-08-28

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： MURATA SEISHIRO ,  SHIOTANI AKIRA ,  FUKUDA MASAYUKI

IPC: B60R19/03

Abstract: PROBLEM TO BE SOLVED: To provide a bumper core material of an impact absorbing bumper capable of absorbing collision energy without generating impact force to destroy legs of a pedestrian up to nonrecoverable states, even when a collision with the pedestrian occurs at comparatively fast speed of 40km/hour.
SOLUTION: This bumper core material is made of polyorefin resin foam of density 0.045 to 0.20g/cm
3 . Maximum thickness in front and rear directions of the core material is ≤15cm. When a compression test (test speed: 500mm/min.) by a pipe having a diameter of 70mm is performed, a ratio F
20 /F
40 of compression load (F
20 ) at 20% strain and compression load (F
40 ) at 40% strain is 0.75 to 1.30, and a radio of F
60 /F
40 of compression load (F
60 ) at 60% strain and the compression load (F
40 ) at 40% strain is 0.75 to 1.30.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了提供能够吸收碰撞能量而不产生冲击力的冲击吸收保险杠的保险杠芯材料，以破坏行人的腿直到不可恢复的状态，即使当与行人的碰撞相对较快地发生时 速度40公里/小时。

解决方案：该保险杠芯材料由密度为0.045至0.20g / cm 3的聚烯烃树脂泡沫制成。 芯材的前后方向最大厚度≤15cm。 当通过直径为70mm的管子进行压缩试验（试验速度：500mm / min）时，压缩载荷（F）的比例F（F）<40 / 在40％应变下的20％应变和压缩载荷（F 40 ）下， 20 为0.75〜1.30，F 60 / 在40％应变下，60％应变下的压缩载荷（F 60S）的F 40 和40％应变下的压缩载荷（F 40 ）为0.75〜1.30 。 版权所有（C）2004，JPO

公开(公告)号：JP2002096323A

公开(公告)日：2002-04-02

申请号：JP2000290786

申请日：2000-09-25

Applicant: JSP CORP

Inventor： SHINOHARA MITSURU ,  SHIOTANI AKIRA ,  TOKIWA TOMOO ,  TOKORO TOSHIO

IPC: C08J9/228 ,  B29B9/12 ,  C08J9/24 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a small piece of a polyester resin foam which is formed into moldings of foam pieces with good biodegradability revealing itself upto the interior of the moldings as well as the moldings of foam pieces. SOLUTION: The small pieces of a polyester resin foam are characterized in that the polyester resin containing at least 60 mol.% aliphatic ester component in the main chain is a base material resin and the ratio (Dt/Db) of the true density Dt (g/cm3) to the bulk density Db (g/cm3) is 1.7-3 and the average weight of one small piece of the foam is 1-10 mg and further, the bulk density Db (g/cm3) is 0.008-0.035 g/cm3. The moldings of the small pieces of the polyester resin foam having communicating spaces are obtained by filling a molding die with the small pieces of the polyester resin foam and thermally molding the small pieces.

公开(公告)号：JP2001106821A

公开(公告)日：2001-04-17

申请号：JP2000285547

申请日：2000-09-20

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  SHIOTANI AKIRA ,  SHINOHARA MITSURU

IPC: C08J9/228 ,  C08J9/232 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a molding of expandable aliphatic polyester resin particles having biodegradability and a low molding shrinkage. SOLUTION: This process comprises heat-molding expandable aliphatic polyester resin particles having biodegradability and a gel content of at least 5%. It is desirable that the base resin of the expandable aliphatic polyester resin particles is the one that contains at least 60 mol% aliphatic ester component.

公开(公告)号：JPH07300537A

公开(公告)日：1995-11-14

申请号：JP11591294

申请日：1994-05-02

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  HINOKAWA TERU ,  SHIOTANI AKIRA

IPC: C08J9/12 ,  C08J9/18 ,  C08J9/232

Abstract: PURPOSE:To produce a uniformly colored molded polypropylene resin foam by filling a mold with foamed colored polypropylene resin particles and thermally foaming the foamed particles in the mold, and to provide foamed colored polypropylene resin particles for producing such a molded foam. CONSTITUTION:Foamed colored polypropylene resin particles are obtd. by foaming, using an inorg. gas blowing agent, polypropylene resin particles colored with color pellets contg. 1-40wt.% color pigment. A colored molded polypropylene resin foam contg. the pigment in a concn. of 1.4X10 -2.0X10 g/cm (per unit vol. of the molded foam) is obtd. by molding the foamed particles in a metal mold to the shape of the mold.

公开(公告)号：JPH07138399A

公开(公告)日：1995-05-30

申请号：JP30977893

申请日：1993-11-16

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  SHIOTANI AKIRA ,  HINOKAWA TERU

IPC: C08J9/12 ,  C08J9/22

Abstract: PURPOSE:To prepare a foamed propylene resin molding having a satisfactory water permeability. CONSTITUTION:This resin molding is prepared by packing foamed propylene resin particles having a crystalline structure in which a high-temperature peak appears on the higher-temperature side of the intrinsic peak in the DSC curve and having an S/(6V ) value of 1 to 3 (wherein V [mm ] and S [mm ] represent the volume and surface area, respectively), a high-temperature peak heat quantity of 5-30J/g and a bulk density of 0.012-0.2g/cm in a mold without application of internal pressure and heated at a temperature ranging from the melting point minus 30 deg.C to that plus 10 deg.C to effect secondary foaming.

公开(公告)号：JPH0524125A

公开(公告)日：1993-02-02

申请号：JP20754591

申请日：1991-07-24

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  SASAKI HIDEHIRO ,  SHIOTANI AKIRA

IPC: B29C44/00 ,  B29K105/04

Abstract: PURPOSE:To constitute the above method so that a fixed weight of foamed particles is filled into a mold by measuring the weight of the foamed particles and the foamed particles can be filled reliably into the mold to solve a problem where dispersion in weight of molded bodies is generated by dispersion in foamed magnifications when it is made so that the foamed particles having fixed capacity is filled always in the mold in an in-mold molding method performing hot molding by filling the mold with the foamed particles. CONSTITUTION:A capacity regulating cylinder 14 communicating with the inside of a cavity 13 of a mold and a piston 15 moving within the same are provided, a foamed particles measured at a fixed weight is filled into the cavity 13 under a state where inside capacity is expanded, the inside capacity is reduced to the original capacity after the filling, mold clamping is performed and molding is performed.

公开(公告)号：JP2004168077A

公开(公告)日：2004-06-17

申请号：JP2002332583

申请日：2002-11-15

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： MURATA SEISHIRO ,  SHIOTANI AKIRA ,  FUKUDA MASAYUKI

IPC: B60R19/22 ,  B60R19/18

Abstract: PROBLEM TO BE SOLVED: To provide a small, lightweight, and sophisticated bumper core capable of absorbing collision energy without generating high impact even when it collides with a pedestrian at a relatively high speed.
SOLUTION: The bumper core of the present invention is a front bumper core 10 made of a polypropylene-based resin foam having a density of 0.06-0.20 g/cm
3 . The bumper core is compose of two or more U-shaped parts each of which consisting of at least two legs and a front surface, and a connection part. The horizontal opening 15 of the U-shaped part is located at the back, and the connection part connects the legs at the back of the frontmost surface of the U-shaped part in the cross direction of the core, thereby connecting the U-shaped parts in the substantially vertical direction of the core.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了提供一种小型，轻便和复杂的保险杠芯，能够吸收碰撞能量，而不会产生高冲击，即使它们以较高的速度与行人碰撞。 解决方案：本发明的保险杠芯是由密度为0.06-0.20g / cm 3 / SP>的聚丙烯基树脂泡沫制成的前保险杠芯10。 保险杠芯部由两个或更多个U形部件组成，每个部件由至少两个腿部和前表面构成，以及连接部件。 U形部分的水平开口15位于后部，并且连接部分在U形部分的最前面的背面沿着芯的横向连接腿部，从而将U形部件 在芯的大致垂直方向的部分。 版权所有（C）2004，JPO

公开(公告)号：JP2000063556A

公开(公告)日：2000-02-29

申请号：JP15916699

申请日：1999-06-07

Applicant: JSP CORP

Inventor： SHIOTANI AKIRA ,  TAIRA AKINOBU ,  SASAKI HIDEHIRO ,  TOKORO TOSHIO

IPC: C08J9/228 ,  B29C44/00 ,  C08K3/24 ,  C08K5/13 ,  C08L23/10

Abstract: PROBLEM TO BE SOLVED: To obtain a high density and high stiffness molding of foamed particles, by charging propylene-based resin foamable particles in a mold or the like, and heating and foaming the foamable particles. SOLUTION: This molding of propylene-based foamable particles is obtained by heating and molding the propylene-based resin foamable particles. The molding product has 0.11-0.45 g/cm3 density, and >=155 (kgf/cm2)/(g/cm3) value obtained by dividing the maximum flexural strength (kgf/cm2) measured by JIS K7221, by the density (g/cm3). The molding product also has 5-100/mm2 average number of bubbles on the cross section of the molding product. The molding can solve the problem of reducing the appearance possessed by the conventional high-density molding product of the propylene-based resin foamable particles, and the problem of not sufficiently providing the effect of the improvement of the stiffness accompanied by the lowering of the magnification of the expansion.

公开(公告)号：JP2000017079A

公开(公告)日：2000-01-18

申请号：JP20272198

申请日：1998-07-02

Applicant: JSP CORP

Inventor： TAIRA AKINOBU ,  SHIOTANI AKIRA ,  TOKORO TOSHIO ,  TSURUGAI KAZUO

IPC: C08J3/12 ,  C08J9/18

Abstract: PROBLEM TO BE SOLVED: To prepare an expanded particle of an uncrosslinked polyethylenic resin with a high expansion ratio which is moldable within a wide range of temperatures, and a molding of a high expansion ratio with excellent surface smoothness using the expanded particle. SOLUTION: A polyethylenic resin particle having a density of at least 0.920 g/cm3 is expanded to give an uncrosslinked polyethylenic resin expanded particle having a true density of 0.024-0.042 g/cm3, a melt flow index of 0.1-10 g/10 min measured at 190 deg.C and 2.16 kgf, a melt tension of 2.5 g or less measured at 190 deg.C and an average diameter of cells constituting the expanded particle of at least 250 μm, and the expanded article is molded.