PROCESS OF MELT SPINNING
    21.
    发明专利

    公开(公告)号:JPS55142708A

    公开(公告)日:1980-11-07

    申请号:JP4898379

    申请日:1979-04-23

    Abstract: PURPOSE:In the melt spinning of high molecular weight polymer, substantially heated silicone oil is coated on the spinneret surface to prevent the polymer dripping, filament wrapping and yarn break during spinning. CONSTITUTION:In the melt spinning of high molecular weight polymer, such as polyester, nylon, the surface of the spinneret is coated with a heat-resistant silicone oil that is mainly composed of polydimethylsiloxane preferably with 500-100,000cps viscosity and polymethylphenylsiloxane preferably with 100-1,000cps viscosity and heated to a temperature over the glass transition point of the silicones. The silicone oil is placed in a vessel 1 and sprayed through air-gun 2 with heater 3 at the top end to the spinneret 4 at 150 deg.C. When the silicone used is high heat-resistant, it may be heated while stored.

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