Polyvinyl chloride film (PVC)
Polyvinyl chloride resin and other modifiers are made by calendering process or blow molding process. General thickness of 0.08-0.2mm, greater than 0.25mm said PVC sheet. PVC resin into the plasticizer, stabilizer, lubricants and other functional processing AIDS, by calendering film. This kind of shed film heat preservation, light transmittance is good, soft and easy to shape, suitable for greenhouse, greenhouse or small shed outer covering material. Disadvantages are: thin film proportion is low, high cost; Poor weather resistance, hard and brittle at low temperature, easy to soften and relax at high temperature; After the auxiliary precipitates, the film surface vacuums, affecting the light transmittance; Residual film can not be explained and combustion treatment.
07-05 / 2021