Stretch Film has the advantages of toughness, impact resistance, transparency and self-adhesiveness. Whether used for collective packaging of products or cargo pallets, it can prevent moisture, dust and reduce labor, improve efficiency, and achieve the purpose of protecting products and reducing costs. Stretch film is a kind of packaging material used to bundle goods. Its unique feature is that it can use mechanical stretching devices or manually generate deformation stress. How to control the viscosity of stretched film?

There are many materials for the stretch film, which mainly depend on the application field of the product, so if you want to control the viscosity of the stretch film, you can work hard on the material. Not all C4-LLDPE can be used for stretch film. C6 and C8 materials are often used because of their ease of processing.

Temperature will also affect the viscosity of the stretch film. Generally, we put the product in an environment of 15 to 25 degrees. If the temperature exceeds 30 degrees, the viscosity will increase; if it is lower than 15 degrees. At that time, the viscosity will deteriorate again. Since there will be polyethylene in the stretched film, we can adjust the amount of polyethylene in the adhesive layer to achieve the desired viscosity.

Since the molecular weight distribution of the stretched film is relatively narrow and the processing range is relatively narrow, usually only 5% of polyethylene can be added to reduce the melt viscosity, so that the flatness of the stretched film will also be improved. Increase the flatness of the film.