What are the causes of static electricity in PE stretch film?
In the process of using PE stretch film, static electricity may sometimes appear. In fact, static electricity generated by stretch film is sometimes not serious. The specific situation depends on the situation. Therefore, we try to avoid the situation where static electricity is generated by stretch film . In order to solve the problem, we must first know the problem. What are the reasons for the static electricity of PE stretch film? Today Qianghui Technology stretch film manufacturers will explain to you the reasons of static electricity of PE stretch film:
1. Static electricity generated during production.
Because the pellets are in conflict with each other, the melt and the die are in conflict, and the film rolls and the guide rollers are in conflict, resulting in static electricity at the factory. Therefore, antistatic agents should be added during the production of PE stretched film to eliminate this part of static electricity. It should be said that this effect is still very good. Antistatic agents are surfactants in which the molecule contains polar hydrophilic groups and non-polar lipophilic groups. The lipophilic group and the plastic have a certain compatibility. The hydrophilic group can ionize or adsorb moisture in the air, and form a thin conductive layer on the surface, which is used to leak the charge and then reach the purpose of eliminating static electricity.
2.Static electricity generated during printing, compounding, slitting and bag making
Because of the interference between the stretched PE film and the guide roller, the interference between the high-speed running film and the monotonous air, it caused static electricity. This part of the static electricity has a great impact on production, and if it cannot be effectively eliminated, it will also have a great impact on the post-processing steps. Generally speaking, it is more useful to choose a superconducting electrostatic brush (contact elimination). It uses a contact film method to export the static electricity through a brush with a very low resistance (1m wide resistance less than 1). Address this issue. You can also choose the ionizer method to blow the attacked ions onto the membrane by wind (non-contact). However, in practice, the ionic gas will find that the static electricity it carries will be eliminated, and the operating ions will also bring a part of the electric ions in the air into the roll.
3. Static electricity generated by stretch film on automatic packaging machine
The interference between the stretched film and the equipment guide roller, and the PE stretched film itself has not been completely eliminated from static electricity. The content that constitutes the difficulty of automatic packaging and the requirements are active on static electricity. At this time, the above method can also be adopted to eliminate static electricity. A useful method is to use superconductive electrostatic brush to eliminate it.
There are different parts of PE stretch film with different electrostatic reasons, and their treatment methods will be different. Therefore, according to different situations, when we deal with such problems, we have to make choices based on our own practical situation. But you can also buy anti-static stretch film, so you don't have to worry about static electricity. If you want to know and consult the anti-static stretch film, please call to consult Qianghui Technology stretch film manufacturer.
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