1. Bowing phenomenon At the entrance of the tenter, the transverse traction film is straight, and at the exit of the cap puller, the film star has the same curved shape. The bowing phenomenon cause...

1. Mechanical properties (1) Stretchability The tensile strength, elongation, elastic modulus and stress at 5% of the PET film. The tensile properties of PET film vary significantly with pro...

1. Longitudinal stretch The longitudinal stretching process includes heating and stretching the non-oriented cast substrate in the longitudinal direction so that the molecular chains are aligned in...

Stepwise biaxial stretching (LD→TD stretching) As mentioned in the past, simultaneous biaxial stretching is not suitable for the production of PET film. Most PET films are produced by a stepwise biaxi...

There are 20 different companies all over the world producing PET film. PET film is characterized by good quality and low price. It has many excellent properties, such as: high mechanical strength, ...

On January 2, 2021, the China Aviation Industry Technology Group was invited by Nanjing Sumino Precision Machinery Co., Ltd. to conduct technical exchanges in the assembly workshop. ...

How is PET biaxially oriented film produced? Various processing technologies are developed to produce unidirectional and biaxially oriented PET films. Typical processing includes the...