Abstract
Film thickness is one of the important parameters in the plastic film production process.A dynamic film thickness control system ,gradually adjusting the opening degree of the wind ring, is utilized for real-time control film thickness, enabling the film thickness to meet the requirements.This paper proposes a dynamic film thickness control system based on automatic wind ring ,consisting of industrial control computer, capacitance detection module, wing ring device , motor drives and so on.Then it further states the method of controlling the opening degree of wind ring by a series of stepper motors. The method can make the film thickness uniformity better,combining the traditional film production line with an idea of controlling automatic wind ring .
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