The first kind: cuff type heat shrink packaging machine, both ends of the open packaging, this packaging is the use of cylindrical film or flat film first packaged products wrapped in a sleeve inside, and then hot high temperature heat contraction, this packaging is completed at both ends of the package will have a contraction mouth. The production of this form of packaging, its process flow is such that when the product is to be packaged with a cylindrical film, it is necessary to first open the opening of the cylinder film, and then push the packaged product into the cylinder film with the help of the chute, and the film needs to be cut off after this step is completed.


This way of packaging is more suitable for items with cylindrical shapes to be coated. Such as batteries, paper rolls, bottles and cans of their processing and packaging. The advantage of such a cylindrical film packaging is that its process is a few fewer steps, so that the packaged product is beautiful in appearance, and its biggest disadvantage is that it can not well adapt to the diversified requirements of the new era, it is often only suitable for the mass production of a single product.


The second type: four-sided sealed heat shrink packaging machine, the product is wrapped around with a flat film or cylindrical film, and then the joint is lap sealed, this packaging form is used for product packaging that requires sealing. For example, it is suitable for large-scale shrink packaging in food, cosmetics, printing, electronic products, pharmaceutical and flooring, ceramics, beverages, hardware and other industries.


Third: one end of the open packaging, pallet shrink packaging is a typical example, the specific packaging method is to make the film into a square bottom bag, and then the bag is set on the stack of goods tray from top to bottom, and then the heat shrinkage. This method of packaging products can have better stability, can be firmly packed in a certain number of units, will not loose in the process of transportation, and can be stacked in the open air.