When packaging and printing, products using plastic film printing must take into account the factors that plastic will generate static electricity. So why do plastic films generate static electricity?
1. Microscopic reasons: According to the theory of atomic physics, substances are in an electrical equilibrium state when they are electrically neutral. Due to the contact of different substances, the gain and loss of electrons are generated, causing the substances to lose their electrical balance and generate static electricity.
2. Macro reasons: friction between objects generates heat and stimulates electron transfer; contact and separation between objects generate electron transfer; electromagnetic induction causes an unbalanced distribution of surface charge on objects; the combined effect of friction and electromagnetic induction.
Plastics are all high-molecular materials, and their surface and volume resistances are all greater than 10 to 12. Therefore, the plastic material is given good insulation properties. For this reason, it is easy to generate static electricity, because plastics and their products are possible in production and transportation, contact, separation, friction and collision, and electromagnetic induction, and even impossible to avoid these occasions.
