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Today xiaobian give you about PVC twist films, PVC twist of new packaging materials for the production of extrusion blow molding of rigid film. Compared with the commonly used cellophane packaging, according to stretch the bouncing ball manufacturers understand the PVC twist The conjunctiva has a good physical and mechanical properties, non-absorbent, and within the packaging material adhesion, as a packaging film after coating of vinyl chloride and vinyl acetate acid copolymer heat seal material, has good heat sealing, suitable for mechanical packaging requirements. In addition, the PVC membrane vacuum aluminum secondary processing not only strengthened surface decorative improve the gas barrier properties.

Higher melt viscosity of rigid PVC, it is necessary to improve the shear rate in order to reduce the melt viscosity to facilitate processing. However, high shear caused by high temperatures lead to PVC overheat decomposition, processing equipment, high-speed extrusion, lower melt residence time in the extruder, which is the main technical characteristics of the PVC twist production equipment. It should also take other measures such as screw cooling, the nose short runner, runner smooth and no dead ends to prevent the PVC stranded decomposition. This article provided by the bouncy ball wholesale only reference