? Hello, according to your question to do the following points of elaboration
High-frequency melting machine is with increased functionality of the welding cutting equipment, that can be welded and can cut the edge of the welding is completed after the product does not need to be melted edges, automatic trimming, welding molding of a device is usually used for: PET double bubble shell, hot-water bags, waist belt, ice pads, etc. need to be melted and to cut the edges of the products.
Single-head machine is generally customized for product personalization of the special welding machine, because it is a special machine so the range of products to do is not much, the advantage is that the fixed product processing is very convenient and efficient.
Double head machine compared to the single head of the machine is more affordable and universal, because it is two heads so can be operated by two people, the equivalent of two sets of equipment, both to save investment and reduce the footprint of the plant.