High frequency induction heater, mainly used for metal heating. It uses the principles of electromagnetic induction, eddy current phenomenon, current thermal effect and high-frequency skin effect to make metal materials heated rapidly in its high-frequency electromagnetic field.
High-frequency sealing machine is mainly used to heat plastics. It uses high-frequency electric field to make molecules in plastic oscillate, and then generates heat energy to heat various plastic products.
The working principle of high-frequency heat sealing machine: the high-frequency electric field acts on the plastic material in its electric field, causing molecular polarization, and these polarized molecules are forced to arrange according to the direction of the electric field. The rapid change of high-frequency electric field makes these molecules follow the change at the same extremely fast speed. So that the dielectric material generates a large amount of heat due to dielectric loss. These heat accumulations and obstacles will form a very high temperature and eventually melt it.
Therefore, if we put PVC and other plastics between electrodes, apply a certain pressure, and after a period of melting and cooling, it will be fixed.
Using this feature, high-frequency embossing or high-frequency molding can be realized, and two or more pieces of plastic can be fused and bonded together.
High-frequency plastic heaters can be divided into: high-frequency heat sealing machine, high-frequency welding machine, high-frequency sealing machine, high-frequency embossing machine, or embossing machine. (