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What are the procedures for making stretch film?


Stretch film is mainly used for the transportation of various products. In the transportation process, it can play a good role in stabilizing, covering and protecting the products. In addition, the stretch film also has a high puncture resistance, good shrinkage and a certain shrinkage stress. So how does a stretch film get made? How many processes does the production of stretch film need to go through?

What is the production process of stretch film?

1. Install the lower film on the reel, clamp the edge of the lower film on the chain, and drive the lower film forward through the operation of the chain. In order to ensure the stability of the tension of the lower film during the operation, tension adjustment device is installed at the unwinding place;

2. When the film runs under the stretch forming plate, the lower film is pre-heated by the heating plate and then stretched; Then, the upper film is installed on the reel, through the tension roller, cursor tracking device and guide roller, in the heat sealing plate and the lower film confluent heat sealing together, in the process of operation to ensure the stability of the tension of the upper film, also installed in the unwinding tension adjustment device;

3. After the upper and lower membranes are joined, the heat sealing device first seals the upper and lower membranes, and then pumps the upper and lower air into a vacuum state. Then the upper and lower membranes are heated by the heat sealing plate, so that the upper and lower membranes are heat sealed together under the action of pressure.

4 According to different requirements, the use of printing date is different, so the location of the printing date device is different, the use of ribbon printing in front of the hot seal plate, the use of ink printing after the hot seal plate;

5. The whole stretch film with products needs to be cut in two directions: transverse and longitudinal, so that multiple products after packaging can be cut into a single product;

6. The packaged products must be sterilized in the sterilizing pot.

What causes the forming effect of stretch film to be bad?

With the application of stretch film more and more widely, we can see the production of stretch film manufacturers are more and more, in many production of stretch film manufacturers, there is no lack of some small manufacturers Bingzhe the purpose of making money quickly to produce some substandard stretch film, so many people have found that they buy these manufacturers of stretch film products molding effect is not ideal, Even very affect our use, so in the end what is the cause of the tensile film molding effect is not good?