**PVC Wire Stretch Film: A Versatile and Cost-Effective Packaging Solution**
PVC wire stretch film is widely used across various industries due to its compact size, high viscosity, and ease of use. It's particularly effective for packaging loose goods, replacing small storage boxes and offering a more efficient solution. By reducing the cost of bulk cargo transportation and packaging by over 30%, it has become a popular choice in sectors such as hardware, minerals, chemicals, pharmaceuticals, food, and machinery. In addition, warehouses in many countries utilize stretch wrap film trays for three-dimensional storage, helping to save space and optimize storage capacity.
PVC wire wrapping film is a modern packaging material known for its ultra-thin, strong, transparent, self-adhesive, and low-temperature resistant properties. It is an ideal choice for packaging sensitive products like chemicals, electronic components, building materials, rubber, tiles, screws, wallpaper, leather, fiberglass, non-woven fabrics, paper rolls, wires, and iron wires. Its excellent adhesion ensures that the outer film sticks tightly to the product layers, providing stability and security during transport and storage.
There are two main methods for producing this film. The first involves adding PIB (polyisobutylene) or its masterbatch to the polymer, while the second method blends VLDPE with PIB. PIB is a translucent, viscous liquid, and direct addition requires specialized equipment or modifications. Using PIB masterbatch simplifies the process, but it usually takes about three days for the PIB to fully disperse. The performance of the film is also influenced by temperature—higher temperatures increase viscosity, while lower temperatures reduce stickiness. After stretching, the viscosity decreases significantly, so it's recommended to store the finished film within a specific temperature range (15°C to 25°C).
In contrast, blending with VLDPE results in slightly less viscous film, but it doesn’t require special equipment. The viscosity remains relatively stable over time and is less affected by temperature changes. However, it is still somewhat influenced by environmental conditions. When the temperature exceeds 30°C, the film becomes more viscous, while below 15°C, it becomes less sticky. Adjusting the amount of LLDPE in the adhesive layer can help achieve the desired level of tackiness for different applications.
Overall, PVC wire stretch film offers a reliable, flexible, and cost-effective packaging solution that continues to gain popularity in both domestic and international markets. Its adaptability and performance make it a preferred choice for a wide range of industrial and commercial packaging needs.
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