Common plastic film and light-ecology plastic film were used as experiment materials to research the influence on vegetable development in plastic film shed.

This article introduces a method to determine the plastic membrane tensile modulus by using a normal mart electron tensile testing machine and computers.

Advances of extrusion equipment for plastics film, including blown film lines, biaxially oriented film lines, calendered film lines and various accessories such as dies,air rings,screenchangers,melt bumps, are introduced.

When a biaxially oriented plastics film is breadthwise stretched, the distribution of the crystallizability affected by the temperature and stress will be the most important factor of the thickness distribution.