热合机工作原理：高频加热的热量主要是依靠每秒钟几万次,几百万次,甚至几亿次的电磁场变化对物体进行作用所产生,高频加热可根据不同的频率范围分为高频感应加热,高频介质加热,高频等离子加热和微波加热等。由于介质加热比通常的传导和对流加热工艺具有速度快,加热均匀及热效率高等优点,所以在现代工业生产中被广泛应用.高频介质加热技术应用在塑料包装中的设备为高频热合机即熔接机 ,即是将交流电变成直流电,再由直流变成的设备,最后将高频功率输送给负载.
Working principle of the heat sealing machine: the heat of high-frequency heating mainly depends on tens of thousands of times per second, millions of times, or even hundreds of millions of electromagnetic field changes on the object. High frequency heating can be divided into high-frequency induction heating, high-frequency medium heating, high-frequency plasma heating and microwave heating according to different frequency ranges. Medium heating is widely used in modern industrial production because of its advantages of high speed, uniform heating and high thermal efficiency. The equipment of high-frequency medium heating technology applied in plastic packaging is high-frequency heat sealing machine, i.e. welding machine, which changes alternating current into direct current, then from direct current into equipment, and finally transfers high-frequency power to load.