In the process of using the PE stretch film, static electricity sometimes occurs. In fact, the static electricity of the PE stretch film is sometimes said to be serious but not very serious. The specific situation depends on the situation. Therefore, we should try to avoid the static electricity generated by the stretch film. Happening. To solve this problem, we must first know this problem, then what is the cause of static electricity in PE stretch film?

 

1. Static electricity is generated during the production of stretched film

The friction between the melt and the die, the friction between the film forming roller and the guide roller in the process of PE stretching film. Therefore, in the process of producing stretched films, antistatic agents should be added to eliminate this part of static electricity. It should be said that this effect is still very good. Antistatic agents are surfactants that contain polar hydrophilic genes and non-polar lipophilic genes in their molecules. The hydrophilic group can ionize or absorb moisture in the air, forming a thin conductive layer on the surface of the stretched film, which is used to leak charges and achieve the purpose of eliminating static electricity.

 

2. The static electricity generated in the process of printing and compounding, slitting and bag making

Due to the friction between the stretched film and the guide roller, the friction between the high-speed stretched film and the dry air, etc., static electricity is generated in the stretched film. This part of static electricity has the greatest impact on production. If it cannot be effectively eliminated, it will also affect the subsequent processing process. Have a big impact.

Generally speaking, the use of superconducting electrostatic brushes is more effective. It is a way of contacting the stretched film, and the static electricity generated by the brushes has a very low resistance to solve this problem. The ion generator can also be used to blow the generated ions onto the membrane in the form of wind.

However, in the actual operation process, the ionic gas can eliminate the static electricity of the stretched film. At the same time, it can be found that the stretched film in operation will also bring some of the electric ions in the air into the winding.

 

3. The static electricity generated by the finished stretch film of the automatic packaging machine

The friction between the finished stretched film and the guide roller of the equipment, and the static electricity of the stretched film itself has not been completely eliminated. The above method can also be used to eliminate static electricity. The most effective method is to use a superconducting electrostatic brush to eliminate it.