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    • 4. 发明申请
    • FOAMED ELECTRIC WIRE AND TRANSMISSION CABLE HAVING SAME
    • 具有电缆的发条电线和传输电缆
    • US20120138332A1
    • 2012-06-07
    • US13343189
    • 2012-01-04
    • Ryo WATANABE
    • Ryo WATANABE
    • H01B7/00
    • C08J9/06C08J2201/024C08J2323/10C08J2423/10H01B3/44H01B3/441H01B7/02
    • The foamed electric wire of the present invention is provided with a conductor and a foamed insulation layer covering the conductor; the foamed insulation layer is obtained by kneading a base resin composed of a high melting point propylene-based resin having a melting point of 150° C. or higher with a master batch containing a thermally decomposing chemical foaming agent and a low melting point propylene-based resin having a melting point of 135° C. or lower and melting the low melting point propylene-based resin followed by foaming by inducing thermal decomposition of the thermally decomposing chemical foaming agent, and a compounding ratio of the low melting point propylene-based resin in the entire resin component formed of the high melting point propylene-based resin and the low melting point propylene-based resin is less than 20% by mass.
    • 本发明的发泡电线设有导体和覆盖导体的发泡绝缘层; 发泡绝缘层通过将含有熔点为150℃以上的高熔点丙烯类树脂构成的基础树脂与含有热分解化学发泡剂的母料和低熔点丙烯 - 熔点为135℃以下的熔融型树脂,熔化低熔点丙烯类树脂,然后引起热分解化学发泡剂的热分解发泡,并且将低熔点丙烯系的配合比 由高熔点丙烯类树脂和低熔点丙烯类树脂形成的整个树脂组分中的树脂的含量小于20质量%。
    • 5. 发明申请
    • PRODUCTION METHOD OF FOAMED ELECTRIC WIRE
    • 泡沫电线的生产方法
    • US20120010308A1
    • 2012-01-12
    • US13240412
    • 2011-09-22
    • Ryo WATANABE
    • Ryo WATANABE
    • C08J9/00
    • H01B13/142C08J9/103C08J9/122C08J2201/03C08J2323/16C08L23/10H01B11/1839H01B13/067
    • The present invention discloses a production method of a foamed electric wire, whereby a foamed electric wire is obtained via a foamed insulation layer formation step of forming a foamed insulation layer on a conductor, wherein the foamed insulation layer formation step includes: a step of introducing a base resin into an extruding machine, a step of introducing a foaming agent into the extruding machine, and a step of extruding a mixture containing the base resin and the foaming agent from the extruding machine and forming the foamed insulation layer on the conductor, and wherein the resin contained in the mixture has a shear stress of 0.40 to 0.80 Mpa, and the base resin is a propylene-based resin.
    • 本发明公开了一种发泡电线的制造方法,其中,通过在导体上形成发泡绝缘层的发泡绝缘层形成工序得到发泡电线,其中,所述发泡绝缘层形成工序包括:导入 将基材树脂注入到挤出机中,将发泡剂引入挤出机中的步骤,以及从挤出机挤出含有基础树脂和发泡剂的混合物并在导体上形成发泡绝缘层的步骤,以及 其中混合物中所含的树脂的剪切应力为0.40至0.80Mpa,基础树脂为丙烯类树脂。