what is advantage of high quality film blowing machine screw

High Quality film blowing machine Screw: Cope From Taiwan Design

1. Screw, barrel material: 645 steel strong, the surface has 2-3mm double alloy, in the screw peak embedded with 10-15% tungsten carbide, nickel and other high hardness metal, so that the part in contact with the material is harder and wear-resistant.

2. Film blowing machine screw as a whole is trumpet shaped, narrow in front and wide in back. It can be divided into three parts: preheating, melting, and Mixing.
2.1 First, the preheating phase. When the material just enters, the temperature set at the screw will be lower than the melting point of the material, so that the material can enter first as far as possible. Gradually increasing the set temperature causes the temperature to rise to melt the material.
2.2 Second, the melting stage. The material is gradually melted, and the two-channel design modeled on Taiwan is adopted here, which adds more thrust to the material and increases the speed while the material channel is narrowed due to the screw structure.
2.3 Finally, the mixing stage.In order to make the film have color, we will add colored master batch to it.When the color master is mixed in the material together, it is impossible to guarantee the uniform color of the final film. The setting of the third part can make the material part that advances in a straight line at the same time turn back to play the role of stirring, so that the color of the film is more uniform. In addition to being used for colored master batch, another case is that HDPE and LDPE are also stirred when mixed.

3.The film blowing machine screw length is long, the plasticization of particles is better, and the quality of film is higher. The screw length can be calculated by L/D.