Switching to electromagnetic heating to reduce energy consumption and improve thermal efficiency is an inevitable trend in the plastics industry. Advantages of plastic machinery electromagnetic heaters: Currently, the heating method used in plastic processing machinery on the market is the traditional resistance electric heater, which heats up and then transfers the heat to the barrel. Since only the heat close to the inner surface of the barrel is transferred to the barrel, while most of the heat from the outer circumference dissipates into the air, this results in significant heat loss and leads to an increase in ambient temperature. Electromagnetic heating technology, on the other hand, causes the metal barrel to heat itself, and the barrel is also wrapped in insulation material, greatly reducing heat conduction loss and heat dissipation into the air, improving thermal efficiency, and preventing an increase in ambient temperature. Consequently, the energy-saving effect is very significant, reaching 30% to 75%. Because the electromagnetic heating coil itself does not heat up and is made of insulating materials and high-temperature cables, there is no issue with the resistance wire in the original electric heater oxidizing at high temperatures and shortening its lifespan. It offers advantages such as a long service life, fast heating speed, and minimal need for maintenance, reducing maintenance time and lowering costs.