The working principle of the thermoformed packaging machine is to load the package into the formed lower mold cavity by stretching and forming the lower film, and then perform vacuum or vacuum inflation in the sealing area, heat the upper film and the lower film, and then pass the horizontal Cutting and slitting separate the packaging, and finally the packaged product will be transported to the next process, and the remaining waste film material will be recycled by the waste film winding system.
The thermoformed packaging machine must use a forming mold. After the film is heated, the forming mold is used to punch into the shape of the container, and the package is filled into the molded lower cavity, and finally the package is sealed. The main reason for generally using or buying a fully automatic thermoformed packaging machine is that its production speed and output are much higher than those of ordinary small packaging machines.
Thermoformed packaging machine mainly have two types of packaging, vacuum packaging and modified atmosphere packaging. Modified atmosphere packaging is mainly a means to achieve product preservation by replacing the air in the package with specific preservation gases such as N2, CO2, etc., using gas replacement technology. This type of packaging has certain sales advantages in appearance, because different packaging boxes can be made through molds for packaging, which can attract buyers' attention. Vacuum packaging literally means packaging vegetables by vacuum, which has a better vacuum effect than some semi-automatic vacuum packaging equipment.
Compared with the general semi-automatic packaging equipment, the thermoforming stretch packaging machine applied to vegetable packaging mainly includes automatic box making, filling, sealing, and cutting, a completely one-stop packaging process, avoiding those Due to pre-packaged problems of sanitation and safety, it is truly safe to eat!