Method of producing an extrudate having controlled shape and size
    4.
    发明授权
    Method of producing an extrudate having controlled shape and size 失效
    制造具有受控形状和尺寸的挤出物的方法

    公开(公告)号:US4425289A

    公开(公告)日:1984-01-10

    申请号:US412634

    申请日:1982-08-30

    IPC分类号: B29C48/92 B29F3/00

    摘要: A method of producing an extrudate is disclosed in which on-line adjustments are made to size and shape deviations by varying the temperature conditions in the extruder and by varying the relative speeds along the extrusion line. The temperature conditions can be adjusted by varying the temperature of the stock while maintaining a fixed relationship of the die temperature to the stock temperature to produce deviations in the thickness of the extrudate with respect to the width of the extrudate, and by varying the temperature of the die with respect to the temperature in the stock to produce variations in different thicknesses of the extrudate. The relative speeds along the extrusion line can be varied by changing the speed of the screw in a cold-feed extruder, by changing the feed rate for a hot-feed extruder, or by changing the speed of the take-away device which regulates the speed by which the extrudate is taken away from the extruder.

    摘要翻译: 公开了一种生产挤出物的方法,其中通过改变挤出机中的温度条件和通过改变沿着挤出生产线的相对速度对尺寸和形状的偏差进行在线调整。 可以通过改变坯料的温度来调节温度条件,同时保持模头温度与坯料温度的固定关系,以产生挤出物的厚度相对于挤出物的宽度的偏差,并且通过改变挤出物的温度 模具相对于坯料中的温度产生不同厚度的挤出物的变化。 沿着挤出生产线的相对速度可以通过改变冷进料挤出机中的螺杆的速度,通过改变热进料挤出机的进料速率,或通过改变调节装置的取出装置的速度来改变 将挤出物从挤出机中取出的速度。