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44 条记录 (耗时 0.021 秒)

    Production method of expansion-molded article of polypropylene resin
    2.
    发明授权
    Production method of expansion-molded article of polypropylene resin 失效
    聚丙烯树脂发泡成型制品的生产方法

    公开(公告)号：US4777000A

    公开(公告)日：1988-10-11

    申请号：US934806

    申请日：1986-11-25

    申请人： Hideki Kuwabara ,  Masato Kanbe

    发明人： Hideki Kuwabara ,  Masato Kanbe

    IPC分类号： C08J9/22 ,  B29B9/16 ,  B29B11/14 ,  B29C44/00 ,  B29K23/00 ,  B29K105/04 ,  C08J9/16 ,  C08J9/232 ,  C08J9/14 ,  C08J9/18

    CPC分类号： C08J9/232 ,  C08J2323/10 ,  Y10S264/09 ,  Y10S264/15 ,  Y10S264/16

    摘要： An expansion-molded article of a polypropylene resin is produced by filling pre-foamed particles of the polypropylene resin, which have a crystalline structure featuring an inherent peak inherent to the polypropylene resin and a high-temperature peak on the temperature side higher than the temperature corresponding to the inherent peak on a DSC curve obtained by differential scanning calorimetry of the pre-foamed particles and a bulk density of 0.04 g/cm.sup.3 or higher and require melting energy of 8-12 J/g at the high-temperature peak, in a mold without applying any pretreatment to the pre-foamed particles to build up an internal pressure therein, and then heating the pre-foamed particles, whereby the pre-foamed particles are caused to expand into the expansion-molded article conforming with the mold. The pre-foamed particles may alternatively have a bulk density lower than 0.04 g/cm.sup.3 and require melting energy of at least 8 J/g.

    摘要翻译： 通过填充聚丙烯树脂的预发泡颗粒，其具有特征在于聚丙烯树脂固有的固有峰的结晶结构和在温度方面高于温度的高温峰，来生产聚丙烯树脂的发泡模塑制品 对应于通过预发泡颗粒的差示扫描量热法获得的DSC曲线上的固有峰，堆积密度为0.04g / cm 3或更高，并且在高温峰处需要8-12J / g的熔融能， 对预发泡颗粒进行任何预处理以在其内形成内部压力的模具，然后加热预发泡颗粒，由此使预发泡颗粒膨胀到与模具相符的发泡模塑制品中。 预发泡颗粒可以替代地具有低于0.04g / cm 3的堆积密度，并且需要至少8J / g的熔融能。

    Process and apparatus for extruding plastic foams through a fluorocarbon lined die shaping means having extended wear characteristics
    4.
    发明授权
    Process and apparatus for extruding plastic foams through a fluorocarbon lined die shaping means having extended wear characteristics 失效
    用于通过具有延长的磨损特性的氟碳化合物衬里模具成型装置挤压塑料泡沫的方法和装置

    公开(公告)号：US4324748A

    公开(公告)日：1982-04-13

    申请号：US189944

    申请日：1980-09-22

    申请人： Hideo Hatakeyama ,  Toru Yamamoto

    发明人： Hideo Hatakeyama ,  Toru Yamamoto

    IPC分类号： B29C33/40 ,  B29C44/50 ,  B29C48/30 ,  B29C48/90 ,  B29D27/00 ,  B29C1/04

    CPC分类号： B29C44/605 ,  B29C44/50 ,  B29C47/0019 ,  B29C47/12 ,  B29C33/40 ,  B29K2827/18 ,  Y10S425/055 ,  Y10S425/115

    摘要： In a method for producing a plastic foam of a desired expanded dimension which is constituted by extruding a melt of a thermoplastic synthetic resin containing a blowing agent through a die of an extruder and passing the extrudate through a shaping device located outwardly of the extruder and secured to the discharge end of the extruder while expanding and solidifying the molten mass so that it fills the shaping device; the improvement wherein at least a part of that area of the inside surface of the shaping device with which the expanded resin makes contact is formed of a plate of a fluorocarbon resin, said plate being secured to the inside surface of the shaping device by fitting portions, said fitting portions having a sufficient space for absorbing an increase in the volume of the fluorocarbon resin plate at the temperature of extrusion molding; and an apparatus for use in the above described process.

    摘要翻译： 在制造具有所需膨胀尺寸的塑料泡沫塑料的方法中，该方法是将包含发泡剂的热塑性合成树脂的熔体通过挤出机的模头挤出并使挤出物通过位于挤出机外部的成形装置并固定 到达挤出机的排出端，同时使熔融体膨胀和固化，使其填充成形装置; 改进之处在于，与发泡树脂接触的成形装置的内表面的至少一部分区域由碳氟树脂板形成，所述板通过装配部分固定到成形装置的内表面 所述装配部分具有足够的空间，用于在挤出成型温度下吸收氟碳树脂板的体积增加; 以及用于上述方法的装置。

    Pre-foamed beads of polyethylene base resin
    5.
    发明授权
    Pre-foamed beads of polyethylene base resin 失效
    聚乙烯基树脂预发泡颗粒

    公开(公告)号：US5015667A

    公开(公告)日：1991-05-14

    申请号：US267725

    申请日：1988-11-02

    申请人： Shohei Yoshimura ,  Hideki Kuwabara ,  Toru Yamaguchi

    发明人： Shohei Yoshimura ,  Hideki Kuwabara ,  Toru Yamaguchi

    IPC分类号： B29C44/00 ,  B29K23/00 ,  B29K105/04 ,  C08J9/16 ,  C08J9/22 ,  C08J9/228

    CPC分类号： C08J9/228 ,  C08J9/16 ,  C08J2323/04

    摘要： A method of forming pre-foamed beads of a polyethylene-base resin are disclosed. The polyethylene-base resin has been obtained by crosslinking a starting polyethylene-base resin having a density greater than 0.940 g/cm.sup.3 and the pre-foamed beads have a crosslinking degree of 10-45% gel content. The pre-foamed beads can provide a molded articles having excellent rigidity and dimensional accuracy and showing superb dimensional stability under heat.

    摘要翻译： 公开了一种形成聚乙烯基树脂的预发泡颗粒的方法。 聚乙烯基树脂通过交联密度大于0.940g / cm 3的起始聚乙烯基树脂并且预发泡珠粒的交联度为10-45％凝胶含量而获得。 预发泡颗粒可以提供具有优异的刚性和尺寸精度的模制品，并且在加热下显示出极好的尺寸稳定性。

    Casting method
    7.
    发明授权
    Casting method 失效
    铸造方法

    公开(公告)号：US4711287A

    公开(公告)日：1987-12-08

    申请号：US830730

    申请日：1986-02-19

    申请人： Hideki Kuwabara ,  Masato Naito ,  Teishiro Watanabe ,  Tadatsugu Hamada

    发明人： Hideki Kuwabara ,  Masato Naito ,  Teishiro Watanabe ,  Tadatsugu Hamada

    IPC分类号： B22C9/04 ,  B22C7/02

    CPC分类号： B22C9/046

    摘要： A consumable pattern of an expanded polyolefin resin and a bulk density of 0.025-0.012 g/cm.sup.3 is embedded in a mold body, a gating system leading to the pattern is formed in the mold body, and molten metal is poured into the gating system to volatilize and replace the pattern. The polyolefin resin is selected from noncrosslinked polypropylene resins, crosslinked polypropylene resins, crosslinked high-density polyethylene and mixtures thereof.

    摘要翻译： 将发泡聚烯烃树脂的消耗图案和0.025-0.012g / cm 3的堆积密度嵌入模具体中，在模具体中形成导向图案的浇注系统，并将熔融金属倒入浇注系统中 挥发并更换图案。 聚烯烃树脂选自非交联聚丙烯树脂，交联聚丙烯树脂，交联的高密度聚乙烯及其混合物。

    Bumper core and process producing same
    8.
    发明授权
    Bumper core and process producing same 失效
    保险杠核心和工艺生产相同

    公开(公告)号：US4598001A

    公开(公告)日：1986-07-01

    申请号：US591542

    申请日：1984-03-20

    申请人： Noboru Watanabe ,  Hisao Tokoro ,  Syuichi Ohhara

    发明人： Noboru Watanabe ,  Hisao Tokoro ,  Syuichi Ohhara

    IPC分类号： B29C67/00 ,  B29C44/00 ,  B29C59/00 ,  B29C65/02 ,  B29C65/48 ,  B29C67/20 ,  B29K55/00 ,  B29K105/04 ,  B29L31/30 ,  B60R19/22 ,  B60R13/04

    CPC分类号： B60R19/22 ,  Y10T428/233

    摘要： A bumper core suitable for use in the fabrication of an energy-absorbing automobile bumper is formed by molding core-constituting members in accordance with the expansion molding process and then bonding them together at their confronting lengthwise end portions into a unitary body. The core-constituting members are formed into such configurations and dimensions that conform with configurations and dimensions obtained by longitudinally dividing the intended core into at least two parts. The bumper core enjoys extremely-high dimensional accuracy.

    摘要翻译： 适用于制造能量吸收型汽车保险杠的保险杠芯通过根据膨胀成型工艺成型芯构成构件，然后将它们在相对的纵向端部粘合在一起而形成为一体。 芯构成构件形成为符合通过将预期芯部纵向分割为至少两个部分而获得的构造和尺寸的这种构造和尺寸。 保险杠芯具有极高的尺寸精度。

    Process for producing pre-foamed particles of polyolefin resin
    9.
    发明授权
    Process for producing pre-foamed particles of polyolefin resin 失效
    生产聚烯烃树脂预发泡颗粒的方法

    公开(公告)号：US4436840A

    公开(公告)日：1984-03-13

    申请号：US420874

    申请日：1982-09-21

    申请人： Hiroyuki Akiyama ,  Sumio Shimada ,  Kuninori Hirosawa ,  Hideki Kuwabara

    发明人： Hiroyuki Akiyama ,  Sumio Shimada ,  Kuninori Hirosawa ,  Hideki Kuwabara

    IPC分类号： B29C67/00 ,  B29B9/16 ,  B29C44/00 ,  B29C59/00 ,  B29K23/00 ,  B29K105/04 ,  C08J9/16 ,  C08J9/18 ,  C08J9/22 ,  B29D27/00

    CPC分类号： C08J9/18 ,  C08J2203/142 ,  C08J2323/02 ,  Y10S264/09

    摘要： In a process for producing pre-foamed particles of a polyolefin resin which comprises impregnating a volatile blowing agent into particles of a polyolefin resin while dispersing the resin particles and the blowing agent in a dispersing medium under heat in a closed vessel, opening one end of the vessel and releasing the resin particles and the dispersing medium simultaneously into an atmosphere kept at a lower pressure than the inside pressure of the vessel; the improvement wherein the pressure of the inside of the vessel after opening its one end is maintained at a substantially constant pressure which is at least 0.7 times the vapor pressure of the blowing agent before opening the end of the vessel.

    摘要翻译： 在制造聚烯烃树脂的预发泡颗粒的方法中，其包括将挥发性发泡剂浸入聚烯烃树脂颗粒中，同时将树脂颗粒和发泡剂在密封容器中分散在分散介质中的加热分散介质中， 并将树脂颗粒和分散介质同时放入保持在低于容器内部压力的压力下的气氛中; 改进之处在于，在打开其一端之后，容器内部的压力保持在打开容器末端之前的发泡剂的蒸气压f的至少0.7倍的基本恒定的压力。