Liaoning Unify High Frequency Equipment Co., Ltd.

Working Principle of HF Plastic Welding Machine

The high-frequency wave of the HF plastic welding machine refers to the electromagnetic wave with a frequency greater than 100Khz, which refers to the high-frequency electromagnetic field (also called the high-frequency electromagnetic field) generated by the self-excited oscillator of the high-frequency oscillation tube (also known as the electronic tube).


HF plastic welding machine is mainly used in industry. In terms of power classification, most of the power on the market is 1.5 kilowatts to 100 kilowatts, of which 4 kilowatts HF machines, 5 kilowatts HF machines, and 8KW kilowatts HF machines are the most common models.


Classification of HF plastic welding machine models:


There are double-head HF machines, double-head pneumatic HF machines, single-head push-disc HF machines, rotary-disc HF machines, disc three-location HF machines and non-standard HF machines.


Full-automatic HF machine is the most popular models in recent years because labor is becoming more and more expensive, and everyone is relatively pursuing efficiency. This kind of models is simple to operate, efficient, and save costs and labor, which can meet the requirement mentioned above.


The working principle of the HF plastic welding machine also uses a kind of thermal energy, but is different from that of the ordinary heating machine. The ordinary machine relies on the upper die or the lower die to slowly infiltrate the heat to weld together, while the HF plastic welding machine is welded together by instant thermal energy. Thus, if the product is pressed by ordinary heating, it will cause the deformation of the pressed plastic product. However, the HF plastic welding is cooled by instant heating and instantaneous power failure, so the pressed product is more beautiful and elegant than ordinary heating machines. Therefore, some effects that ordinary heating machines cannot achieve but high-frequency plastic welding machines can.


HF plastic welding machine must have high-frequency molds when working. High-frequency molds are made of metal materials. Among them, copper molds are the best because copper conducts fast and stable while iron is the worst for iron is not as conductive as copper and will rust after heating. In general, we recommend not to use iron and that steel is the best among it, iron and aluminum. Thus, if there are up and down molds for blister pressure, we suggest aluminum to make the lower mold, copper to make the upper mold, so as to save cost and have good effects. While if the blister and paper card fit, you can use aluminum to make up and down molds.


HF plastic welding machines have many applications, such as blister packaging, blister paper card packaging, PVC soft plastic bags, leather embossing, inflatable toys, car interior sun visors, car mats and electronic packaging.

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