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Influence Of The Calendering Effect Of PVC Transparent Film
Jun 15, 2018


The production process of PVC transparent film has calendering, blow molding and so on. Each process will have different effects on PVC transparent film and PVC film. The following is the introduction of the influence of the calendering.


We know that when the material passes through two rotating cylinders, the PVC film is subjected to a strong shear stress and tensile stress, and the molecular orientation of the PVC molecules will occur in the direction of the calendering, resulting in the anisotropy of the mechanical properties of the film, which is the effect of the calendering. The stronger the calendering effect, the greater the shrinkage rate of the product during the two processing. It is due to heat or stress relaxation that the original oriented macromolecules revert to only the curling state.




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