The generation of book printing China static electricity is mainly affected by four factors: process, equipment, raw materials and environment

Process factors: the paper is pressed by the printing plate and the roller, and the paper and the roller, printing plate and ink produced intense friction, friction makes the surface temperature of the above parts increased, easy to produce thermal movement of molecules, resulting in the redistribution of electrons, resulting in static electricity; in printing, paper and wire tape, guide paper wheel and ink contact and separation quickly, so that the printed paper and roller liner produced static electricity; When the speed of book printing machine increases, the friction speed of paper and printing plate, ink and the contact and peeling speed of paper and roller are all accelerated, which makes the electron movement increase, the energy of charge migration increases, and finally leads to the increase of static electricity.

Factors of equipment and raw materials: the material properties include the intrinsic chemical composition of the material, the internal structure of the material, the mechanical characteristics of stress and strain, the shape and conductivity of the material, etc. the electrical conductivity of the material has a dual effect on static electricity. if the material is a conductor, the charge is free to move on its surface, and the charge is uniformly distributed on its surface, rather than staying at the local position where the charge is generated. this distribution on the charge surface can only cause a lower voltage. Any part of the conductive material in contact with the ground will immediately transfer the charge to the ground. And the insulation material is different from the conductor, such as most of the printing materials in paper, plastic film and so on, generate static electricity to form a higher voltage, also can not be eliminated by grounding.


Environmental factors: the surrounding environmental conditions include the composition and pressure of the gas around the contact object, temperature, humidity, etc., friction between different kinds of materials, will produce different polarity of static electricity, different materials with different electrostatic strength, air temperature and humidity in the printing place, the effect on printing static electricity is also very significant. When the book printing china’s machine parts and materials are squeezed and rubbed against each other, the thermal decomposition and thermoelectric effect of the molecules are caused, and the charged particles are increased or polarized, thus the printing machine parts and materials are charged. When the air temperature of the printing place rises, the above effects are more intense, which makes the accumulation of electrostatic quantity increase greatly.