COMPOSITE RESIN PRE-EXPANDED PARTICLES CONTAINING CARBON BLACK AND METHOD FOR PRODUCING SAME, AND EXPANDED MOLDED ARTICLE
    104.
    发明申请
    COMPOSITE RESIN PRE-EXPANDED PARTICLES CONTAINING CARBON BLACK AND METHOD FOR PRODUCING SAME, AND EXPANDED MOLDED ARTICLE 审中-公开
    含有炭黑的复合树脂预扩展粒子及其生产方法,以及膨胀型制品

    公开(公告)号:US20160229971A1

    公开(公告)日:2016-08-11

    申请号:US15023005

    申请日:2014-09-11

    Abstract: Carbon black-containing composite resin pre-expanded particles comprising 100 to 400 parts by mass of a polystyrene-based resin with respect to 100 parts by mass of a carbon black-containing polyolefin-based resin; having a carbon black content of 0.5 to 5.0% by mass and a bulk density of 0.015 to 0.25 g/cm3; and having an outermost layer of 30 to 80 pm after undergoing the following tests: (a) one of the carbon black-containing composite resin pre-expanded particles is sliced into a 1-mm slice in such a way that cross-section surfaces of cells are exposed on both surfaces of the slice; (b) the obtained slice is immersed in toluene at 25° C. for 24 hours to extract a polystyrene-based resin component as described above; (c) the cross-section surface of the slice is then subjected to magnified photographing by a microscope; (d) the obtained microscope image is observed.

    Abstract translation: 含有炭黑的复合树脂预发泡粒子,相对于100质量份含炭黑的聚烯烃类树脂,含有100〜400质量份的聚苯乙烯类树脂; 炭黑含量为0.5〜5.0质量%,堆积密度为0.015〜0.25g / cm3; 并在进行以下试验后具有30至80μm的最外层:(a)将含炭黑的复合树脂预发泡颗粒之一切成1mm切片,使得横截面为 细胞暴露在切片的两个表面上; (b)将得到的切片在25℃下浸入甲苯中24小时以提取如上所述的聚苯乙烯类树脂组分; (c)切片的横截面由显微镜进行放大拍摄; (d)观察所得显微镜图像。

    Polyethylene resin foamed particles, polyethylene resin in-mold foam molded article, and method for producing polyethylene resin foamed particles
    105.
    发明授权
    Polyethylene resin foamed particles, polyethylene resin in-mold foam molded article, and method for producing polyethylene resin foamed particles 有权
    聚乙烯树脂发泡颗粒,聚乙烯树脂模内发泡成型体,以及聚乙烯树脂发泡粒子的制造方法

    公开(公告)号:US09309384B2

    公开(公告)日:2016-04-12

    申请号:US14003407

    申请日:2012-03-02

    Applicant: Toru Yoshida

    Inventor: Toru Yoshida

    Abstract: Provided are (i) polyethylene resin foamed particles which are obtained by foaming polyethylene resin particles to be foamed having good productivity and a high expansion ratio and which are suppressed in reduction of cell diameters, and (ii) a polyethylene resin in-mold foam molded article obtained from the polyethylene resin foamed particles which has good surface smoothness while being reduced in surface yellowing. The polyethylene resin foamed particles (i) contain, as a base resin, a polyethylene resin composition containing, in an amount of not less than 1000 ppm to not more than 4000 ppm in total, one or more compounds selected from the group consisting of antioxidants, metal stearates, and inorganic substances and (ii) have Z-average molecular weight of not less than 40×104 to not more than 70×104, an average cell diameter of not less than 180 μm to not more than 450 μm, and an open-cell ratio of not more than 12%.

    Abstract translation: 本发明提供(i)聚乙烯树脂发泡粒子,其通过发泡聚乙烯树脂颗粒发泡得到,生产率高,膨胀率高,抑制了细胞直径的降低,(ⅱ)聚乙烯树脂模内发泡成型 从具有良好表面平滑性的聚乙烯树脂发泡颗粒获得的物品在表面变黄的同时减少。 聚乙烯树脂发泡粒子(i)含有作为基础树脂的含有不少于1000ppm至不超过4000ppm总量的一种或多种选自抗氧化剂的化合物的聚乙烯树脂组合物 ,金属硬脂酸盐和无机物质,(ii)Z平均分子量为40×10 4〜70×10 4以下,平均气泡直径为180μm以上且450μm以下,以及 开细胞比例不超过12%。

    Expanded particle of noncrosslinked polyethylene-based resin and expansion molded article of noncrosslinked polyethylene-based resin
    108.
    发明授权
    Expanded particle of noncrosslinked polyethylene-based resin and expansion molded article of noncrosslinked polyethylene-based resin 有权
    非交联聚乙烯类树脂的膨胀颗粒和非交联聚乙烯类树脂的发泡成型品

    公开(公告)号:US08779019B2

    公开(公告)日:2014-07-15

    申请号:US13521655

    申请日:2011-01-14

    Abstract: A noncrosslinked polyethylene resin expanded particle is provided having a bulk density BD in a range of 10 g/L to 100 g/L, the particle being obtained by expanding a polyethylene resin particle whose density is in a range of 0.920 g/cm3 to 0.940 g/cm3, the noncrosslinked polyethylene resin expanded particle having a shrinkage factor in a range of 2% to 30%, the shrinkage factor being obtained by the following formula (1): Shrinkage Factor =(BD−VBD)×100/VBD  (1), wherein: the BD of the noncrosslinked polyethylene expanded particle is a bulk density at 23° C. and at 0.1 MPa (at a normal atmospheric pressure); and the VBD of the noncrosslinked polyethylene expanded particle is a bulk density at 23° C. and at a reduced pressure of 0.002 MPa or less.

    Abstract translation: 提供了一种非交联聚乙烯树脂发泡粒子,其堆积密度BD在10g / L至100g / L的范围内,该颗粒通过使密度在0.920g / cm 3至0.940的范围内的聚乙烯树脂颗粒膨胀而获得 g / cm3,收缩率在2%〜30%的收缩率的非交联聚乙烯树脂发泡体,收缩率由下式(1)求出:收缩系数=(BD-VBD)×100 / VBD( 1),其中:非交联聚乙烯发泡粒子的BD为23℃,0.1MPa(正常大气压)时的体积密度; 非交联聚乙烯发泡粒子的VBD为23℃,0.002MPa以下的减压下的体积密度。

    MOLDED ARTICLE OF POLYOLEFIN-BASED RESIN EXPANDED BEADS
    109.
    发明申请
    MOLDED ARTICLE OF POLYOLEFIN-BASED RESIN EXPANDED BEADS 有权
    基于聚烯烃的树脂膨胀珠的成型品

    公开(公告)号:US20140097389A1

    公开(公告)日:2014-04-10

    申请号:US14047584

    申请日:2013-10-07

    Abstract: An electrostatic dissipating molded article having a surface resistivity of 1×105 to 1×1010Ω and obtained by in-mold molding of multi-layered polyolefin-based resin expanded beads each having an polyolefin-based resin expanded core layer and a polyolefin-based resin cover layer which covers the polyolefin-based resin expanded core layer and which is formed from a polyolefin-based resin (A), a polymeric antistatic agent (B) of a block copolymer of a polyether block and a polyolefin block, and an electrically conductive carbon black (C), the components (A) to (C) being present in a specific proportion.

    Abstract translation: 一种表面电阻率为1×105〜1×1010&OHgr的静电消散模制品; 并且通过模内成型多层聚烯烃系树脂发泡珠而获得,所述多层聚烯烃类树脂发泡珠均具有聚烯烃类树脂发泡芯层和覆盖聚烯烃类树脂发泡芯层的聚烯烃系树脂覆盖层,该聚烯烃类树脂覆盖层由 聚烯烃类树脂(A),聚醚嵌段和聚烯烃嵌段的嵌段共聚物的聚合抗静电剂(B)和导电性炭黑(C),成分(A)〜(C) 具体比例。

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