中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.042 seconds)

    POLYPROPYLENE RESIN FOAMED PARTICLES, POLYPROPYLENE RESIN IN-MOLD FOAM MOLDED ARTICLE, AND METHOD FOR PRODUCING SAME
    5.
    发明申请
    POLYPROPYLENE RESIN FOAMED PARTICLES, POLYPROPYLENE RESIN IN-MOLD FOAM MOLDED ARTICLE, AND METHOD FOR PRODUCING SAME 有权
    聚丙烯树脂泡沫颗粒，聚丙烯树脂模内泡沫塑料制品及其生产方法

    公开(公告)号：US20150284526A1

    公开(公告)日：2015-10-08

    申请号：US14441375

    申请日：2013-11-25

    Applicant: KANEKA CORPORATION

    Inventor： Toru Yoshida

    IPC: C08J9/04 ,  C08J9/00 ,  B29C44/02 ,  B65D25/30

    CPC classification number: C08J9/04 ,  B29C44/02 ,  B29C44/3453 ,  B29C44/3461 ,  B29K2023/12 ,  B29K2105/048 ,  B29L2031/7162 ,  B65D25/28 ,  B65D25/30 ,  C08J9/0028 ,  C08J9/122 ,  C08J9/18 ,  C08J9/232 ,  C08J2201/034 ,  C08J2203/06 ,  C08J2323/14 ,  C08L23/14 ,  Y10T428/1352 ,  Y10T428/1376

    Abstract: Polypropylene resin foamed particles containing a polypropylene random copolymer having a ratio of a Z-average molecular weight Mz to a number average molecular weight Mn, Mz/Mn, of 20 or more and 300 or less, a melt-flow rate of 5 g/10 minutes or more and 20 g/10 minutes or less, a melt strength of 2.5 cN or less, and a flexural modulus of 600 MPa or more and 1600 MPa or less, and preferably having at least two heat quantity areas of fusion can provide an in-mold foam molded article such as a returnable box having a short molding cycle at in-mold foam molding and beautiful surface properties; and are excellent in moldability even if an inner pressure more than the atmospheric pressure is not provided to the particles or the particles are filled in a mold without compressing them with a gas during the in-mold foam molding.

    Abstract translation: 含有Z均分子量Mz与数均分子量Mn，Mz / Mn的比为20以上且300以下，聚丙烯无规共聚物的熔融流动速率为5g / 10分钟以上20g / 10分钟以下，熔融强度为2.5cN以下，弯曲弹性模量为600MPa以上，1600MPa以下，优选具有至少2个热熔融面积， 诸如在模内发泡成型中具有短的成型周期的可回收盒的模内发泡模塑制品和美观的表面性质; 并且即使在模内发泡成型时，即使不向颗粒提供超过大气压的内部压力，或者在模具中填充颗粒而不用气体压缩，则成型性优异。

    BULK-DENSITY MEASURING DEVICE FOR PRE-EXPANDED PARTICLES AND METHOD FOR MANUFACTURING PRE-EXPANDED PARTICLES
    8.
    发明申请
    BULK-DENSITY MEASURING DEVICE FOR PRE-EXPANDED PARTICLES AND METHOD FOR MANUFACTURING PRE-EXPANDED PARTICLES 审中-公开
    用于预膨胀颗粒的大体积密度测量装置和制造预扩展颗粒的方法

    公开(公告)号：US20160229096A1

    公开(公告)日：2016-08-11

    申请号：US15029784

    申请日：2014-04-07

    Applicant: KANEKA CORPORATION

    Inventor： Kyosuke Murakami ,  Shinobu Ochikoshi ,  Toru Yoshida

    IPC: B29C44/60 ,  B29C44/34 ,  C08J9/16 ,  G01N9/02

    CPC classification number: B29C44/60 ,  B29C44/3461 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2995/0063 ,  C08J9/16 ,  C08J2323/06 ,  G01N9/02 ,  G01N2009/022 ,  G01N2009/024

    Abstract: A bulk-density measuring device includes a first vessel in which contracted pre-expanded particles are swollen and recovered from contraction in a pressure-reduced state where a vessel internal pressure is lower than atmospheric pressure; a second vessel filled with the pre-expanded particles after being swollen in the first vessel in the pressure-reduced state where a vessel internal pressure is lower than the atmospheric pressure, and into which the pre-expanded particles of a constant volume are collected fractionally; a pressure-reducing unit that adjusts the vessel internal pressures of the first vessel and the second vessel to be lower than the atmospheric pressure; and a scale that measures a weight of the pre-expanded particles filled in the second vessel.

    Abstract translation: 体积密度测量装置包括第一容器，其中收缩的预发泡颗粒在容器内部压力低于大气压力的压力降低状态下膨胀并从收缩中恢复; 在容器内压低于大气压力的压力降低状态下在第一容器中膨胀后填充预发泡颗粒的第二容器，分批收集恒定体积的预发泡颗粒 ; 压力降低单元，其将所述第一容器和所述第二容器的容器内部压力调节为低于大气压; 以及测量填充在第二容器中的预发泡颗粒的重量的标尺。

    Polypropylene resin foamed particles, in-mold foam molded body of polypropylene resin, and method for manufacturing same
    9.
    发明授权
    Polypropylene resin foamed particles, in-mold foam molded body of polypropylene resin, and method for manufacturing same 有权

    公开(公告)号：US10221292B2

    公开(公告)日：2019-03-05

    申请号：US15910652

    申请日：2018-03-02

    Applicant: Kaneka Corporation

    Inventor： Toru Yoshida ,  Shintaro Miura

    IPC: C08J9/18 ,  C08J9/232 ,  C08L23/14 ,  C08L23/16 ,  C08J9/00 ,  C08J9/224 ,  B29C44/02 ,  B29K23/00 ,  B29K105/04 ,  B29K105/00 ,  B29C44/34 ,  B29C44/44

    Abstract: A method of producing a polypropylene resin in-mold expanded product, includes: placing polypropylene resin particles obtained from a base material resin having a melting point of 140° C. to 150° C., the base material resin comprising: a polypropylene resin A comprising 3 weight % to 15 weight % of 1-butene and having a melting point of 130° C. to 140° C.; and a polypropylene resin B having a melting point of 145° C. to 165° C., water, and an inorganic gas foaming agent in a pressure-resistant container, forming a mixture, dispersing the polypropylene resin particles while stirring the mixture, obtaining a dispersion liquid, increasing a temperature and a pressure in the pressure-resistant container, releasing the dispersion liquid from the pressure-resistant container into a region having a pressure lower than the pressure in the pressure-resistant container, producing expanded polypropylene resin particles; and filling a mold with the expanded polypropylene resin particles, and then heating the expanded polypropylene resin particles.

    PROCESS FOR PRODUCING EXPANDED POLYETHYLENE-BASED RESIN BEADS AND PROCESS FOR PRODUCING POLYETHYLENE-BASED MOLDED RESIN OBJECT BY IN-MOLD FOAMING
    10.
    发明申请
    PROCESS FOR PRODUCING EXPANDED POLYETHYLENE-BASED RESIN BEADS AND PROCESS FOR PRODUCING POLYETHYLENE-BASED MOLDED RESIN OBJECT BY IN-MOLD FOAMING 审中-公开

    公开(公告)号：US20190030768A1

    公开(公告)日：2019-01-31

    申请号：US16144766

    申请日：2018-09-27

    Applicant: KANEKA CORPORATION

    Inventor： Yuki Hayase ,  Toru Yoshida

    IPC: B29C44/34 ,  C08J9/18 ,  C08J9/232 ,  C08J3/24

    Abstract: A method for producing polyethylene-based resin foamed particles includes a first-step foaming process. The first-step foaming process includes: producing an aqueous dispersion by dispersing polyethylene-based resin particles in an aqueous dispersing medium in a sealed vessel, adding a carbon dioxide-containing foaming agent to the aqueous dispersion in the sealed vessel, heating and pressurizing the aqueous dispersion in the sealed vessel, and releasing the aqueous dispersion in the sealed vessel to a pressure region where a pressure is lower than an internal pressure of the sealed vessel. The foaming ratio in the first-step foaming process is 10 to 18 times. The polyethylene-based resin particles have a polyethylene-based base resin and a melting point of 105 to 125° C., a tan δ of 0.3 to 0.7, and a complex viscosity of 5000 to 20000 Pa·s.

Patent Agency Ranking