Patent ID: 6152720
Filing Date: 2000-11-28
Classification: B29C,B29K

Abstract:
A device for stable widthwise regulation of a bulb angle in extrusion of sheets of heat-sensitive plastic using an extrusion device having a calender opening formed by rotatable intake rollers, said device for stable widthwise regulation comprising:a sensor positioned to sense an angular position of one of the rotatable intake rollers;a measuring device constructed and positioned for measuring a parameter of the sheets of heat-sensitive plastic which correlate with the bulb angle, wherein said measuring device is triggered for movement in a widthwise direction of the sheets of heat-sensitive plastic in response to the angular position of the one of the intake rollers which was sensed by said sensor;means for altering positioning elements of the extrusion device in accordance with the measured parameter of the sheets of heat-sensitive plastic said measuring device; andmeans for synchronizing a position through which said measuring device moves with the angular position of the one of the intake rollers sensed by said sensor.