| 摘要 |
A method of manufacturing thermoplastic flexible transparent PVC film (sheet) without flow marks and air pit is capably provided with high efficient production to upgrade the quality of plastic film (sheet), which is included the following steps: calendering melted plastic material by calenders into melting plastic film (sheet) with predetermined thickness, quickly chilling and setting the melting plastic film (sheet) with chilling water, removing water from the cooled plastic film, heating the plastic film to dry out any residual water and controlling the plastic film again to a temperature from 30 DEG C to 85 DEG C, and applying a pressure ranging from 1 kg/cm<2> to 8 kg/cm<2> on the plastic film (sheet) while winding it into a roll. Plastic film (sheet) produced with this method has good transparency and smooth surface without flow mark and air pit. <IMAGE> |
