公开(公告)号：JPH08103581A

公开(公告)日：1996-04-23

申请号：JP26312694

申请日：1994-10-03

Applicant: JSP CORP

Inventor： TSURUGAI KAZUO ,  TOKORO TOSHIO ,  OIKAWA MASAHARU ,  TEZUKA HISAO

IPC: A47C27/14 ,  B68G5/02

Abstract: PURPOSE: To improve air permeability and flexibility of a cushion material by forming a foamed body having voids communicating at a designated percentage of void out of deformed polyolefine resin foam particles, and setting the compressive strength to a designated value. CONSTITUTION: A foamed body having voids communicating at the percentage of void of 10% or more is formed out of deformed polyolefine resin foam particles 1. The respective foam particles 1 have a hollow hole P, and have projections (e) according to the sphere. In order to obtain flexibility required as a cushion material, the 40% compressive strength of the foamed body is set to 0.5kgf/cm or less. To be preferable, it is 0.4kgf/cm or less. The compressive strength is given to the cushion material, whereby in the case where the compressive stress applied to the cushion material is comparatively small, it is possible to obtain cushioning performance like soft or semi-hard urethane foam.

公开(公告)号：JPH07304895A

公开(公告)日：1995-11-21

申请号：JP11951794

申请日：1994-05-09

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  OIKAWA MASAHARU ,  TSURUGAI KAZUO

IPC: C08J9/18

Abstract: PURPOSE:To provide a polypropylene-based resin foamed particle containing an antistatic agent, however, excellent in fusion-bonding properties of particles when molded in a mold and capable of producing a foamed molding excellent in antistatic properties and its production method. CONSTITUTION:This foamed particle is produced by foaming a resin particle composed of a polypropylene-based resin containing 0.1 to 5.0-wt.% nonionic surfactant having antistatic properties and 200 to 1000 average molecular weight and exhibiting 50 to 95 J/g heat of fusion in DSC curve as the base resin. The foamed particle has a specified crystal structure and the quantity of heat at the high-temperature peak is 10 to 30J/g. Production of this foamed particle is carried out by dispersing polypropylene-based resin particles containing a nonionic surfactant in the presence of an inorganic gas-based foaming agent in a dispersion medium in a tightly closed tank, heating them up to >= the softening temperature of the resin particles and then discharging the resin particles and the dispersion medium from the tank under a reduced pressure to foam the resin particles.

公开(公告)号：JPH059329A

公开(公告)日：1993-01-19

申请号：JP18335991

申请日：1991-06-28

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08L23/00

Abstract: PURPOSE:To obtain the subject expanded resin particles at a high expansion ratio by dispersing crosslinked polyolefinic resin particles impregnated with an inorganic gaseous foaming agent in a dispersion medium in a hermetically sealed container, then releasing the resultant resin particles and dispersion medium at a temperature above the softening temperature of the resin to an atmosphere under a low pressure and expanding the resin. CONSTITUTION:A water-soluble inorganic substance (e.g. borax) and a water-insoluble inorganic substance (e.g. silica) are added to a polyolefinic resin (e.g. low-density polyethylene) and the resultant mixture is then melt kneaded in an extruder, extruded from a die at the tip of the extruder into a strand form, quenched in water, subsequently cut and granulated into a pellet-like shape. The obtained pellets are then subjected to crosslinking treatment with dicumyl peroxide and further dispersed in a dispersion medium (e.g. water) in a hermetically sealed container. An inorganic gaseous foaming agent (e.g. dry ice) is then added and volatilized to impregnate the resin particles. The resin particles and the dispersion medium are subsequently released from the interior of the container to an atmosphere under a low pressure to expand the resin particles. Thereby, the objective expanded resin particles are obtained.

公开(公告)号：JP2019001334A

公开(公告)日：2019-01-10

申请号：JP2017118439

申请日：2017-06-16

Applicant: JSP CORP

Inventor： CHIBA TAKUYA ,  OIKAWA MASAHARU

IPC: B60N2/90 ,  B32B5/32 ,  B32B27/32 ,  B32B27/40

Abstract: 【課題】本発明は、熱可塑性樹脂発泡体からなる芯材にポリウレタンフォームを積層接着した車両用シート部材において、芯材の強度や剛性に優れ、芯材とポリウレタンフォームとの接合性に優れる車両用シート部材を提供することを課題とする。【解決手段】本発明の車両用シート部材は、熱可塑性樹脂発泡体からなる芯材と、芯材の上面に積層接着されているポリウレタンフォームとからなり、熱可塑性樹脂発泡体の上面の少なくとも一部が、接着性改質樹脂を表面に有する発泡粒子を含む発泡粒子群から構成される発泡粒子成形体の上面からなり、発泡粒子成形体の上面に、接着性改質樹脂を表面に有する発泡粒子が露出しており、発泡粒子がポリオレフィン系樹脂(A2)から構成され、該接着性改質樹脂が、ポリオレフィン系樹脂(A1)と、ポリスチレン系樹脂及び/又はポリエステル系樹脂(B)との混合樹脂から構成されている。【選択図】なし

公开(公告)号：JP2014173012A

公开(公告)日：2014-09-22

申请号：JP2013047126

申请日：2013-03-08

Applicant: Jsp Corp ,  株式会社ジェイエスピー ,  Japan Polypropylene Corp ,  日本ポリプロ株式会社

Inventor： KOSHITA NOBUMASA ,  SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08L23/08 ,  C08L23/14 ,  C08L53/00

Abstract: PROBLEM TO BE SOLVED: To provide a polypropylene-based resin foam particle which is suppressed in embrittlement of foam at low temperatures and has good low-temperature impact resistance, and a compact thereof.SOLUTION: A polypropylene-based resin foam particle is produced from a polypropylene-based resin composition which has a melting point of 125-150°C, shows a single peak in the range of -20 to 20°C in a temperature-loss tangent(tanδ) curve obtained by solid dynamic viscoelasticity measurement, a temperature of the peak of 8°C or lower and a maximum value of tanδ of 0.12 or greater. A polypropylene-based resin foam particle has such a crystalline structure that there appear an endothermic peak (intrinsic peak) intrinsic to the polypropylene-based resin composition and another endothermic peak (high-temperature peak) on the high-temperature side relative to the intrinsic peak in the DSC curve (DSC curve for first heating) obtained when heating 1-3 mg of the foam particles from 25°C to 200°C at a programming rate of 10°C/min by the heat flux differential scanning calorimetry.

Abstract translation: 要解决的问题：提供在低温下抑制泡沫脆化并具有良好的低温耐冲击性的聚丙烯类树脂发泡体颗粒及其成型体。解决方案：聚丙烯基树脂泡沫颗粒由 熔点为125-150℃的聚丙烯类树脂组合物在通过固体动态粘弹性测定得到的温度损失角正切（tanδ）曲线中表现出-20〜20℃的单峰， 8℃以下的峰的温度和tanδ的最大值为0.12以上。 聚丙烯类树脂发泡体颗粒具有这样的晶体结构，即在聚丙烯类树脂组合物中存在吸热峰（固有峰），在高温侧出现另一吸热峰（高温峰） 通过热通量差示扫描量热法以10℃/ min的编程速度加热1-3mg泡沫颗粒从25℃至200℃获得的DSC曲线（第一次加热的DSC曲线）中的峰。

公开(公告)号：JP2014077045A

公开(公告)日：2014-05-01

申请号：JP2012225005

申请日：2012-10-10

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： CHIBA TAKUYA ,  OIKAWA MASAHARU ,  SHINOHARA MITSURU

IPC: C08J9/228

CPC classification number: H01B1/24 ,  C08J9/0061 ,  C08J9/008 ,  C08J9/122 ,  C08J9/18 ,  C08J9/232 ,  C08J9/34 ,  C08J2201/034 ,  C08J2203/06 ,  C08J2205/052 ,  C08J2323/10 ,  C08J2423/04 ,  C08J2453/00

Abstract: PROBLEM TO BE SOLVED: To provide a polyolefinic resin foam particle molding excellent in terms of expandability and molding fusibility and stably expressing, while preserving excellent characteristics unique to polyolefinic resins, an electrostatic diffusibility confined to a surface resistivity range of 1×10to 1×10Ω.SOLUTION: The polyolefinic resin foam particle molding of the present invention is a foam particle molding obtained by intra-mold-molding composite foam particles wherein polyolefinic resin coat layers are coated on polyolefinic resin foam core layers and have the following characteristics: the polyolefinic resin coat layer is constituted by a mixture of a polyolefinic resin (A), a polymeric antistatic agent (B), and electroconductive carbon black (C); the polymeric antistatic agent (B) is a block copolymer of a polyether block and a polyolefin block; the weight ratio between the polyolefinic resin (A) and the polymeric antistatic agent (B) (A : B) is confined to a specified range; the blending ratio of the electroconductive carbon black (C) is confined to a specified range; the surface resistivity of the foam particle molding is 1×10to 1×10Ω.

Abstract translation: 要解决的问题：为了提供在扩展性和成型熔融性方面优异且稳定表达的聚烯烃树脂泡沫颗粒成型体，同时保持聚烯烃树脂特有的优异特性，限制在1×10〜1×10＆OHgr的表面电阻率范围内的静电扩散性 本发明的聚烯烃树脂发泡体成型体是将聚烯烃类树脂涂层涂布在聚烯烃类树脂发泡芯层上的复合泡沫体的模内成形而得到的泡沫塑料成形体，具有以下特征： 树脂涂层由聚烯烃树脂（A），聚合抗静电剂（B）和导电炭黑（C）的混合物构成; 聚合抗静电剂（B）是聚醚嵌段和聚烯烃嵌段的嵌段共聚物; 聚烯烃树脂（A）和聚合抗静电剂（B）（A：B）之间的重量比限制在规定范围内; 导电性炭黑（C）的配合比例限定在规定范围内; 泡沫颗粒成型体的表面电阻率为1×10〜1×10＆OHgr。

公开(公告)号：JP2013199600A

公开(公告)日：2013-10-03

申请号：JP2012069158

申请日：2012-03-26

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NISHIJIMA HIROKI ,  SHIMA MASAOMI ,  NOHARA NORINAGA ,  OIKAWA MASAHARU

IPC: C08J9/228 ,  B29C44/00 ,  B29K23/00 ,  B29K25/00 ,  B29K105/04 ,  B60R21/04

Abstract: PROBLEM TO BE SOLVED: To provide an impact absorption member for vehicles which is formed of a foamed synthetic resin particle molding using a composite resin, comprising a polystyrene resin component and a polyethylene resin component, as a base resin, and, even if having a structure with a minimum thickness of less than 10 mm, exhibits satisfactory flame retardancy and is excellent in mechanical properties such as impact absorption performance.SOLUTION: A foamed synthetic resin particle molding includes a thin part having a minimum thickness of less than 10 mm. The foamed synthetic resin particle molding includes a composite resin comprising 50-80 pts.mass of a polystyrene resin component and 20-50 pts.mass of a polyethylene resin component (wherein the total amount of both is 100 pts.mass), as a base resin, and includes a flame retardant. The polystyrene resin contains a butyl acrylate component unit as a copolymerization component, and the content of the butyl acrylate component unit is not less than 1 mass% and less than 3 mass% per 100 mass% of the polystyrene resin.

Abstract translation: 要解决的问题：提供一种由包含聚苯乙烯树脂组分和聚乙烯树脂组分的复合树脂的发泡合成树脂颗粒成型体形成的车辆用冲击吸收构件作为基础树脂，并且即使具有 具有最小厚度小于10mm的结构，显示出令人满意的阻燃性，并且机械性能如冲击吸收性能优异。解决方案：发泡合成树脂颗粒模制件包括具有小于10mm的最小厚度的薄部分。 发泡合成树脂颗粒模制品包括包含聚苯乙烯树脂组分50-80磅和聚乙烯树脂组分20-50质量份（其中两者的总量为100重量份）的复合树脂，作为 基础树脂，并且包括阻燃剂。 聚苯乙烯树脂含有作为共聚成分的丙烯酸丁酯成分单元，丙烯酸丁酯成分单元的含量相对于聚苯乙烯树脂100质量％为1质量％以上3质量％以下。

公开(公告)号：JP2011016914A

公开(公告)日：2011-01-27

申请号：JP2009162271

申请日：2009-07-08

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NOHARA NORINAGA ,  SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: C08J9/16 ,  C08F110/06

Abstract: PROBLEM TO BE SOLVED: To provide foamed polypropylene resin particles that can be heat-molded under a low steam pressure, does not leave any resin deposit on a surface of a molding die in molding, is excellent in fusibility between the foamed particles and is capable of yielding a smooth-surfaced, highly flexible molded product of foamed particles, and the smooth-surfaced, highly flexible molded product of the foamed polypropylene resin particles.SOLUTION: The foamed polypropylene resin particles are multilayered foamed particles obtained by expanding multilayered resin particles comprising a core layer and a coating layer formed from a polypropylene resin, provided that the weight ratio of the core layer to the coating layer is from 99.5:0.5 to 80:20. Regarding the polypropylene resin forming the core layer and the polypropylene resin forming the coating layer, the difference in their melting points falls within a specific range, the ratio of amounts of partial melting heat within the temperature range equal to or higher than the melting point falls within a specific range, the difference in their flexural modulus falls within a specific range, and the flexural modulus of the polypropylene resin forming the core layer is equal to or smaller than a prescribed value.

Abstract translation: 要解决的问题：为了提供可以在低蒸汽压力下被热模塑的发泡聚丙烯树脂颗粒，在模制中不会在模塑模具的表面上留下任何树脂沉积物，发泡颗粒之间的熔融性是优异的，并且能够 产生泡沫颗粒的光滑表面，高度柔性的模制产品，以及发泡聚丙烯树脂颗粒的光滑表面，高度柔性的模制产品。溶解性：发泡聚丙烯树脂颗粒是通过膨胀多层树脂颗粒获得的多层发泡颗粒， 核心层和由聚丙烯树脂形成的涂层，只要芯层与涂层的重量比为99.5:0.5至80:20。 关于形成芯层的聚丙烯树脂和形成涂层的聚丙烯树脂，其熔点差落在特定范围内，在等于或高于熔点的温度范围内的部分熔融热量的比率下降 在特定范围内，弯曲模量的差异在特定范围内，形成芯层的聚丙烯树脂的挠曲模量为规定值以下。

公开(公告)号：JP2010144078A

公开(公告)日：2010-07-01

申请号：JP2008323659

申请日：2008-12-19

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： OIKAWA MASAHARU ,  SHINOHARA MITSURU ,  NOHARA NORINAGA

IPC: C08J9/12 ,  C08L23/14 ,  C08L23/16

Abstract: PROBLEM TO BE SOLVED: To provide a molded product of a polypropylene-based resin expanded particle with a low expansion ratio having excellent fusibility between expanded particles mutually, small density difference between a surface part and an inner part of the molded product, better mechanical properties, such as compressive strength, compared with a conventional one, and also excellent appearance. SOLUTION: In an in-mold molding method with the polypropylene-based resin expanded particle, the expanded particle has apparent density of 100-720 g/L, a ratio between the apparent density before and after heating of 1 to 1.7 when heated in a pressure-resistant container with saturated water vapor at a melting temperature of the expanded particle for 10 seconds, and compressibility of 0-15% when filled in the mold. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供具有相互膨胀的颗粒之间具有优异的熔融性的低膨胀率的聚丙烯类树脂膨胀颗粒的模制产品，模制产品的表面部分和内部之间的密度差小， 与常规的相比具有更好的机械性能，例如抗压强度，以及优异的外观。 解决方案：在具有聚丙烯基树脂发泡粒子的模内成型方法中，发泡粒子的表观密度为100-720g / L，加热前后的表观密度之比为1〜1.7， 在具有饱和水蒸汽的耐压容器中在发泡颗粒的熔融温度下加热10秒，并且当填充到模具中时压缩率为0-15％。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009144096A

公开(公告)日：2009-07-02

申请号：JP2007324644

申请日：2007-12-17

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： OIKAWA MASAHARU ,  NOHARA NORINAGA

IPC: C08J9/228

CPC classification number: B29C44/3461 ,  C08J9/0061 ,  C08J9/18 ,  C08J2203/06 ,  C08J2323/12 ,  C08J2423/00

Abstract: PROBLEM TO BE SOLVED: To provide a molded article from polypropylenic resin foamed particles which is capable of stably giving a foamed molded article therefrom having excellent physical properties even when produced in-mold molding at low heating temperatures, without impairing the excellent properties of the above foamed molded article characteristic in high toughness, high heat resistance, ready-to-incinerate property, easy-to-recycle property, etc. SOLUTION: The polypropylenic resin foamed particles are provided, which have a melting point of 120°C or higher and lower than 140°C, wherein the melting point is determined from a DSC curve determined by heat flux differential scanning calorimetry in accordance with JIS K7121-1987 in which a test piece of 1 to 3 mg of the polypropylene resin foamed particles is heated to 200°C at a heating rate of 10°C/min, then cooled to 30°C at a rate of 10°C/min, and again heated from 30°C to 200°C at a heating rate of 10°C/min, to determine the DSC curve. The polypropylenic resin foamed praticles have an apparent density ratio [(the apparent density before heated)/(the apparent density after heated)] of not greater than 1.5 when heated for 10 s by saturated steam at a temperature higher by 5°C than the melting point thereof in a pressure vessel. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种聚丙烯类树脂发泡粒子的成型体，即使在低温加热下进行模内成型也能够稳定地赋予具有优异物理性能的发泡成形体，而不损害优异的性能 的上述发泡成型体，其特征在于高韧性，高耐热性，即焚烧性，易于再循环性等。解决方案：提供聚丙烯树脂发泡颗粒，其熔点为 120℃以上且低于140℃，其熔点由根据JIS K7121-1987的热通量差示扫描量热法测定的DSC曲线求出，其中将1〜3mg的聚丙烯树脂 将发泡颗粒以10℃/ min的加热速率加热到200℃，然后以10℃/ min的速度冷却至30℃，并以30℃至30℃以加热速率 10℃/分钟 确定DSC曲线。 聚丙烯树脂发泡原料在表观密度比[（加热前的表观密度）/（加热后的表观密度）]不高于1.5时，通过饱和蒸汽在比5℃高5℃的温度下加热10秒时， 在压力容器中的熔点。 版权所有（C）2009，JPO＆INPIT