PET薄膜双向拉伸技术及发展方向

PET film biaxial stretching technique and development direction

采用双向拉伸技术制得的聚酯薄膜具有拉伸强度高、光学性能好、厚度均匀、产能大、生产效率高等特点,双拉技术已得到普遍的应用。介绍了双向拉伸的原理、工艺、设备及双向拉伸技术的发展方向。

The PET film prepared by biaxial stretching technique have the characteristics such as high tensile strength, good optical property, uniform thickness, big productivity and high production effieency. The biaxial stretching technique has been general applied. The principle, process, equipment and development direction of biaxial stretching technique was introduced.