Stretch film is predominantly manufactured from LDPE, although different grades of polyethylene and specialized polymer blends may be used to achieve specific performance characteristics. LDPE is particularly suitable because it provides a strong combination of elasticity, tensile strength, puncture resistance, and stretchability. Advanced extrusion technologies allow manufacturers to produce single-layer or multilayer films with carefully controlled mechanical properties. High-quality stretch film is designed to stretch significantly while retaining enough recovery force to hold loads tightly. This elasticity creates the load retention force required for stable palletization. The film also provides good puncture and tear resistance, which helps prevent package failures when wrapping cartons with sharp corners or irregular shapes. Transparency is another valuable characteristic because it allows operators to inspect the load without removing the film. Depending on the formulation, additives may be used to improve cling, slip, UV resistance, anti-static performance, or other specialized properties. Multilayer films can combine different polyethylene grades to provide improved stretch performance, puncture resistance, and holding force. These material characteristics make stretch film suitable for securing lightweight consumer products as well as heavy industrial pallets.
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