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What is PVC film production process?
Sep 08, 2018

The production process of PVC film is unpacking, inspection, sieving, formula-mixing→granulation→extruding thick film→air cooling→hot water bath boiling water heating→setting cylinder lateral inflation→sandwich roller quenching→winding Heat shrink film.

The production process of PVC is not complicated. The ordinary production line generally consists of a rolling machine, a printing machine, a back coating machine and a cutting machine. The thickness is only produced by the direct motion stirring of the rolling machine, the roller rotation and the high temperature rolling. A film of 0.3 mm to 0.7 mm is produced at the same time and printed on the front side of the film by a printing machine, and a back coat is attached to the back side of the film by a back coater. Do not underestimate this layer of back coating, it is an important guarantee of the quality performance of PVC film. The back coating consists of a special material and is a high-energy affinity agent. It is because of this back coating that the PVC film can be tightly blended with the medium-density board or other sheets, and the glue is not opened for ten or even fifteen years. The biggest problem with ordinary veneers is that it can't solve the problem of film shedding. Since the entire production process is carried out at high temperatures (220 °C in the rolling press), the PVC film has high light resistance and fire resistance, ensuring high quality of the PVC film.

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