Expanded particle of noncrosslinked polyethylene-based resin and expansion molded article of noncrosslinked polyethylene-based resin
    53.
    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
    54.
    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。

    Polylactic acid-based resin foamed particles for in-mold foam-molding and method for producing the same, as well as method for producing polylactic acid-based resin foam-molded article
    56.
    发明授权
    Polylactic acid-based resin foamed particles for in-mold foam-molding and method for producing the same, as well as method for producing polylactic acid-based resin foam-molded article 有权
    用于模内发泡成型的聚乳酸类树脂发泡粒子及其制造方法以及聚乳酸类树脂发泡成型品的制造方法

    公开(公告)号:US08372512B2

    公开(公告)日:2013-02-12

    申请号:US12593293

    申请日:2008-03-27

    Abstract: The present invention provides a method for producing polylactic acid-based resin foamed particles for in-mold foam-molding from which a polylactic acid-based resin foam-molded article excellent in heat resistance and mechanical strength can be obtained by in-mold foam-molding. In the method of the present invention for producing polylactic acid-based resin foamed particles for in-mold foam-molding, a rotary blade is rotated at a given rotation speed while being always in contact with the front end surface of a nozzle and a polylactic acid-based resin extrudate extrusion-foamed through a nozzle is cut with the rotary blade, so that it is possible to cut the polylactic acid-based resin extrudate surely to obtain substantially spherical polylactic acid-based resin foamed particles. Therefore, when polylactic acid-based resin foamed particles are used for in-mold foam-molding, the polylactic acid-based resin foamed particles foam uniformly in all directions and, as a result, the foamed particles are thermal fusin bonded to unite together strongly in all direction.

    Abstract translation: 本发明提供了一种用于模内发泡成型的聚乳酸类树脂发泡粒子的制造方法,通过模内发泡成型法可以获得耐热性和机械强度优异的聚乳酸类树脂发泡成型体, 成型。 在本发明的用于模内发泡成型的聚乳酸类树脂发泡粒子的制造方法中,旋转刀片以一定的转速旋转,同时始终与喷嘴的前端面接触,聚乳酸 通过旋转刀片切割通过喷嘴挤出发泡的酸性树脂挤出物,从而可以确切地切割聚乳酸类树脂挤出物,以获得基本上为球形的聚乳酸类树脂发泡颗粒。 因此,当聚乳酸类树脂发泡粒子用于模内发泡成型时,聚乳酸类树脂发泡粒子在各个方向均匀发泡,结果发泡粒子结合成团聚强度 在所有方向。

    METHOD FOR PRODUCING CELLULAR POLYOLEFIN-BASED PLASTIC PARTICLES

    公开(公告)号:US20240209171A1

    公开(公告)日:2024-06-27

    申请号:US18558025

    申请日:2022-04-27

    Abstract: The invention relates to a method for producing cellular plastic particles, including the steps of: —providing a plastic material in the form of pre-expanded plastic material particles, —loading the pre-expanded plastic material particles with a blowing agent under the influence of pressure, —expanding the pre-expanded plastic material particles loaded with blowing agent in order to produce cellular plastic particles, more particularly, cellular plastic particles having lower density, under the influence of temperature, in which the expanding of the plastic material particles loaded with blowing agent is carried out under the influence of temperature by irradiation of the plastic material particles loaded with blowing agent with high-energy thermal radiation, more particularly, infrared radiation.

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