Suitable for various specifications of heat shrink films formed by blowing PVC film resin using the tube film process. The film has the advantages of good transparency, good gloss, and high shrinkage rate. It is a popular new type of packaging material today and is widely used for the outer packaging of food, beverages, tea, glass products, handicrafts, sanitary ware, cosmetics, electronic products, etc. Features: 1. This unit mainly consists of a plastic extruder, air ring, head device, traction device, cooling device, heating expansion device, winding device, heating system, and electrical control device.

　　2. The key components, screw and barrel, are made of high-quality alloy steel 38GrMoAIA. After precision processing and ammonification treatment, they have high hardness, wear resistance, corrosion resistance, and other properties;

　　3. Adopting a new type of screw with a length diameter of 1:26, suitable for mixing and plasticizing polyvinyl chloride (PVC) plastics with high melt viscosity and poor thermal stability, with superior plasticization degree;

　　4. Configure an automatic temperature control system to control each heater and body cooling fan, ensuring constant and precise temperature throughout the plasticizing process, in accordance with the process requirements of film production, and ensuring excellent quality of the heat harvesting film;

　　5. The mold head and air ring adopt special structures, which are conducive to plasticization and cooling requirements;

　　6. Easy to operate, compact structure, centralized control, and high degree of automation.

　　The whole machine is divided into four parts: the host part, traction device, temperature control box, and winding part. The detailed content is as follows:

　　Model: SJRM-55

　　Film width: 600mm

　　Film thickness: 0.02-0.08mm

　　Production: 40kg

　　Screw diameter: 55mm