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Method for controlling the foil thickness of flat films produced in flat films - extruders
Method for controlling the foil thickness of flat films produced in flat films - extruders
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机译:控制在平膜中生产的平膜箔厚度的方法-挤出机
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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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