**PVC Wire Stretch Film: A Versatile and Cost-Effective Packaging Solution**
PVC wire stretch film has become a widely used packaging material across various industries due to its compact size, high viscosity, and ease of use. It is particularly effective for bundling scattered goods, replacing small storage boxes and offering a more efficient way to manage inventory. By reducing the cost of bulk cargo transportation and packaging by over 30%, it has found extensive application in sectors such as hardware, minerals, chemicals, pharmaceuticals, food, and machinery. Additionally, in many foreign countries, stretch wrap film trays are commonly used for three-dimensional storage, helping to save valuable warehouse space.
PVC wire wrapping film is a modern packaging solution that features ultra-thin, strong, transparent, self-adhesive properties, and excellent low-temperature resistance. These characteristics make it an ideal choice for packaging a wide range of products, including chemicals, electronic components, building materials, rubber, bricks, tiles, screws, wallpaper, leather, fiberglass, non-woven fabrics, paper rolls, wires, and iron wires. Its strong adhesion ensures that the outer film sticks firmly to the product layers, keeping the items secure and stable during transport and storage.
There are two main methods for producing this type of film. The first involves adding PIB (polyisobutylene) or its masterbatch to the polymer, while the second method uses a blend of VLDPE (very low-density polyethylene) with PIB. PIB itself is a translucent, viscous liquid, and direct addition typically requires specialized equipment or modifications. Using PIB masterbatch allows for a smoother process, though it usually takes about three days for the PIB to fully integrate. Temperature also plays a key role—when the temperature is high, the viscosity increases, making the film stickier, whereas at lower temperatures, it becomes less adhesive. After stretching, the film's viscosity decreases significantly, so it’s recommended to store the finished product within a specific temperature range (15°C to 25°C) for optimal performance.
In contrast, blending with VLDPE results in slightly less sticky film but offers greater flexibility in terms of equipment requirements. The viscosity remains relatively stable and is not affected by time, although temperature still influences it. At temperatures above 30°C, the film becomes more viscous, while below 15°C, it may be less tacky. Adjusting the amount of LLDPE in the adhesive layer can help achieve the desired level of adhesion, making it a versatile option for different applications.
Overall, PVC wire stretch film continues to gain popularity due to its efficiency, durability, and cost-saving benefits, making it a preferred choice for businesses looking to optimize their packaging solutions.
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