• 涂覆的挤出装置
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涂覆的挤出装置

  • 17/04/2018 08:51:11

涂覆的挤出装置 (1)挤出:用带混炼型螺杆的挤出机,螺杆长径比因塑料品种不同而异。所用机头为衣架式机头。机头接套内的阻流器有混炼效果。但阻流器的存在,会使剪切速率升高、发热量增大,使大分子链断裂,使物料分解。所以阻流器的使用要慎重。(2)成型:从机头缝隙挤出的熔融…

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