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Procedure for the comparison of film thickness of flat film produced in flat film extrusion plants
Procedure for the comparison of film thickness of flat film produced in flat film extrusion plants
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机译:比较在平膜挤出设备中生产的平膜膜厚的程序
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摘要
To achieve a substantially uniform thickness of film extruded from or coated by a sheet die, the thicknesses of the film are measured over its width and the film is sub-divided widthwise into imaginary sections of equal length. Each film section is associated with a correcting section of the sheet die. If the thickness measurement reveals a thick or thin portion in a film section, the associated correcting section is cooled or heated, respectively. The mean thickness distributions are determined from the measurements and employed as a correcting signal for setting elements of the individual correcting sections.
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