A kind of plastic film production process

Abstract

The invention provides a plastic film production process, which is completed by the cooperation of a bottom plate, a mounting frame, two stretching devices, two pressing devices, a driving motor, a cooling roller and a cutting device. The thickness of the film bubble is different, and it is difficult to press the thickness evenly by double-roller pressing, and because the blown film bubble has a certain viscosity due to the temperature, when ordinary rollers are used to press it, the two may appear to be rolled together. The situation is still sticky, which will cause the pressed film bubble to be pulled and torn by the rotating rollers. The shaped film bubble may be loose during transportation, and it is difficult to form an effective cutting when cutting it. , the flatness of the edge of the cut film bubble is reduced and other problems.

Description

technical field [0001] The invention relates to the technical field of plastic film production, in particular to a plastic film production process. Background technique [0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. It is used for packaging and as a coating layer. It is widely used in food, medicine, chemical and other fields. In the process of plastic film production, it is necessary to shape and cut the blown bubbles. Traditional shaping and cutting usually use double-roller rotation to suppress the passing bubbles and flatten their thickness by extrusion. , so as to play the role of widening, and then cut the film bubbles in transport, but this method often encounters some problems: [0003] 1. Due to the different thickness of the bubble after blow molding, it is difficult to press the thickness evenly by double-roller pressing, and because the bubble after blow molding has a certain viscosity due t...

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Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a plastic film production process, which can solve the problem that due to the different thickness of the bubbles after blowing, it is difficult to uniform the thickness at one time by double-roller pressing, and because the thickness of the bubbles after blowing Because the temperature has a certain viscosity, when ordinary rollers press it, the two may still stick after rolling, which will cause the pressed film bubble to be pulled and torn by the rotating roller. The film bubbles may be loose during transportation, it is difficult to form an effective cut when cutting them, and the flatness of the edge of the cut film bubbles is reduced, etc.

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