Winding film is mainly used for product packaging, which is to avoid product damage in the process of transportation. The winding film on the market is a widely used packaging product, but the quality of some winding films is not very good, so when choosing, users should polish their eyes. And the following are winding film manufacturers for you to sort out a few indicators about judging the quality of winding film, hope to help you!

Now many industries will use the winding film, and the more used is the winding machine industry, because the winding film and winding machine are used together. Wrapping film around the tray to wrap all the objects on the tray, and then two hot grippers heat seal the film at both ends together.

It is a kind of film made of LLDPE, which has high transparency and high elongation. It is suitable for packing outside pallets and packing scattered and semi-finished goods inside factories. The film is wound around the goods to make the goods more tightly packed, so as to protect the goods and make the turnover more flexible and convenient.When the turntable of the winding machine slows down or slips, we can open the motor cover of the turntable, loosen the connecting bolts on the mounting plate, and then adjust the tension bolts clockwise, so as to achieve the required tension.When using the film winding machine, the goods must be placed smoothly and gently to avoid the deformation of the chassis. The goods wrapped with film must be placed within the scope of the turntable of the film winding machine, because if the goods are too large, the exceeding scope should be within 10 cm or the operation should be carried out according to the actual space of the winding machine, then the winding machine is likely to be damaged.

At present, there are many ways to ensure the safety of goods transportation, but the most important thing is to ensure the safety of goods transportation. The safety of goods refers to the packaging of goods, and a safety guarantee can ensure the integrity of products to a great extent.

Although there are many kinds of stretch films and different uses, they also have their common characteristics. After all, their basic raw materials are the same, so there is no difference in use, that is to say, there are some other differences in performance. Then we will briefly introduce what they have in common.

The surface tension of the winding film is directly related to the surface free energy of the film, and the surface energy of the winding film is determined by the molecular structure of the film itself. Therefore, the surface tension of winding film has many factors. The main points are as follows:1. For non-polar polymer, the surface free energy and surface wet tension of winding film are low, generally about 30dyn / cm. In theory, if the surface tension of the object is less than 33dyn / cm, ordinary ink or adhesive can not adhere firmly, so it is necessary to carry out surface treatment;2. Polyester (PET, PBT, pen, PETG) is a polar polymer with high surface free energy and surface wet tension over 40 dynes / cm. However, for high-speed color printing or increasing the adhesion between vacuum aluminum coating and BOPET winding film surface, surface treatment of BOPET winding film is needed to further improve its surface wet tension.3. The transfer of aluminum layer will occur in the electroplating process, and it will occur in the adhesive layer. The main measure to prevent reverse corona of tension film is to adjust the pressure of rubber roller before corona treatment roller. The pressure at both ends of the pressure roller must be consistent, and the pressure must be appropriate.The purpose of the test is to prevent the corona from getting into the inner film when the dynamic tension is less than 0.05 mm. Thank you very much for your attention to the price of winding film.