Why is the machine used winding film produced by the winding film machine thin and not broken
The application field of the machine used winding film produced by the winding film machine is very wide, mainly used in conjunction with pallets to package scattered goods as a whole, replacing small containers. Due to its ability to reduce the transportation and packaging costs of bulk goods by more than 30%, it is widely used in the overall packaging of various products such as hardware, minerals, chemicals, pharmaceuticals, food, machinery, etc; In the field of warehouse storage, foreign countries also use stretch wrapped film tray packaging for three-dimensional storage and transportation to save space and space.
The earliest domestic winding film was based on PVC as the substrate. Due to environmental protection issues, high cost, and poor stretchability, it was gradually replaced when PE film was produced domestically.
Material:
PE winding film was originally made of EVA as a self-adhesive material, but its cost was high and it had a taste. Later, PIB VLDPE was developed as a self-adhesive material, and the substrate is now LLDPE, including C4 C6 C8 and metallocene PE (MPE). Metallocene polyethylene resin products are a unique single resin that can provide an unprecedented combination of thin film processing and high carbon alpha olefin (HAO) performance advantages. Processors can achieve more stable processing, increase production, reduce film thickness, and simplify the procurement of resin raw materials. MPE resin has a wide processing range on both LLDPE and LDPE film processing equipment, and can cope with changes in production conditions. It is a product used to produce high toughness and high transparency films, which can significantly reduce film thickness.
workmanship
Compared to LLDPE/LDPE resin, it can still provide better results. As a multifunctional resin, MPE resin can create value in multi-layer blown film production lines, cast film production lines, and single-layer blown film production lines. Contributed to sustainable development. In the early days, LLDPE winding films were mainly blown films, developing from single-layer to two-layer and three-layer; Nowadays, the production of LLDPE winding film is mainly based on the casting method. However, due to the narrow molecular weight distribution and processing range of the winding film, it is difficult to control the processing conditions. Usually, 5% LDPE is added to reduce the melt viscosity and increase the flatness of the winding film. The casting method has the advantages of uniform thickness and high transparency, which can be applied to the requirements of high rate pre stretching. Due to the inability of single-layer casting to achieve single-sided adhesion, the application field is limited. So a three-layer co extrusion structure is still more ideal. The produced winding film has uniform thickness, good tensile strength, and is not easy to break.
Wrapping film machine
The wrapping film has outstanding tensile strength, impact resistance, and puncture resistance. These excellent strength and elongation properties make them thinner in the application of packaging bags. have Anti adhesive agent, smoothing agent, heat stabilizer. The puncture resistance of the film is more than three times higher, making it very suitable for packaging. This excellent performance can make the product thin-walled, reduce the total cost of packaging, and also meet the requirements of environmental protection for reducing plastic waste.
