Stretch wrapping machine plays an important part in food packaging industry. With good production technology, ensure that the equipment long-term deformation, long-term use. Here I will introduce the
structure of
stretch wrapping machine and their
main work.
1. Heat-sealing packaging: The
main work is to form a vacuum state when the upper film and the lower film converge. After the upper film contacts the upper heat-sealing plate, the air in the film is extracted, and the heat of the heat-sealing plate is used to heat the film, so that the heat-sealing material of the upper and lower films is melted, and then the upper and lower films are bonded together through pressure extrusion to form a whole, so as to ensure no leakage of product packaging.
2. Tensile forming: The
main work is to flatten the stretched film through the laminated heating plate, increase the temperature of the film to increase the plasticity of the film, and then stretch the film to the same shape as the mold by compressed air and pumping air.
3. Other
structures are as follows: lower film unwinding, upper film unwinding, print film cursor tracking, last print, transverse and longitudinal cutter, running chain, etc.
Stretch wrapping machine can use double-sided film design, so that the film thickness is more accurate. It has important applications in food, chemical and other fields. Its structure is simple and easy to operate. Can meet the needs of customers for
stretch wrapping machine. Because the device uses a thermoforming method to pack containers, it is easy to realize multi-column parallel operation, and the production cycle is much shorter than that of packers using prepared packaging containers, which can be between 2S and 6S, and the number of cycles can be between 10 and 30 times /min.
Each
stretch wrapping machine is equivalent to a packaging system. In addition to manual feeding of the lower film and the upper film, and sometimes manual or partial manual filling, the rest work is completed automatically and continuously with high productivity. Large volume, mainly length and size, the quality of the machine is larger, higher manufacturing costs, the price is expensive. Once installed and secured, it is not easy to move. The equipment is a machine, electricity, gas, liquid integration product, although the
structure is more complex, but because of the modular design principle, it still has good combination and interchangeability, easy to maintain and repair.
