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At present, the use of ordinary packaging machines in China has a large weight in the market, but the security problem has become a constraint factor for its development. The development of production technology for stretch film packaging machines has solved this problem while greatly improving production efficiency and intelligence. In order to better understand the working condition of the stretch film packaging machine, the following plastic mesh industry website - Jiuzhi Plastics Co., Ltd. tells you about the seven working steps of the stretch film packaging machine, as follows:
1, the lower film unwinding
The lower membrane is mounted on the discharge reel, and the clip on the chain clamps the side of the lower membrane, and the operation of the chain drives the lower membrane to move forward, and the stretch film packaging machine ensures the stability of the lower membrane tension during the operation. A tension adjustment device is installed at the unwinding point.
2, stretch forming
When the film is run under the stretched forming plate, the lower film is preheated by a hot plate, and then stretched.
3, the upper film unwinding
The upper film is mounted on the discharge reel, and is heat-sealed with the lower film at the heat sealing plate through the tension roller, the cursor tracking device and the guiding roller, and the smoothness of the tension of the upper film is ensured during the running process at the unwinding position. A tension adjustment device is installed.
4, heat sealing device
After the upper and lower membranes are combined, the heat sealing device first seals the upper and lower membranes, and then draws the upper and lower air into a vacuum state, and then the upper heat sealing plate heats the membrane to heat seal the upper and lower membranes under pressure to ensure that the upper and lower membranes are heat sealed together under pressure. The product does not leak after leaving the heat seal plate.
5, print date
Depending on the requirements, the date of printing used is different, and the position of the device to be printed is different. The printing using the ribbon is before the heat sealing plate, and the ink is printed after the heat sealing plate.
6, cut
The entire film with the product needs to be slit in both the transverse and longitudinal directions to cut the packaged product into individual products.
7, sterilization
The product packaged by the stretch film packaging machine needs to be sterilized in the sterilization pot.
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