Aluminum PE laminated foil is widely used in flexible packaging and other composite products because it combines the barrier properties of aluminum with the flexibility and strength of polyethylene (PE). Common examples include food and beverage pouches, milk and yogurt packaging, toothpaste tubes, pharmaceutical blister foil, cosmetic packaging, and various aluminum plastic sheets and offcuts. The challenge at the end of their service life is that the aluminum and plastic are permanently bonded together, making conventional single-material recycling unsuitable.

A practical solution is dry mechanical separation.Instead of using water or chemical treatment, the material is first crushed into small mixed granules, typically below 10 mm. The crushed material is then processed through a grinding system to further reduce its size and liberate the aluminum from the PE. Screening can be used to control particle size, with oversized material returned to the mill for further processing.

Once the aluminum and plastic have been sufficiently liberated, separation equipment is used to produce individual material streams. Air separation can remove fractions according to differences in weight and aerodynamic properties, while an electrostatic separator provides the final separation between conductive aluminum and non-conductive plastic particles. With a properly configured process, the recovered aluminum and PE can reach high purity, making them suitable for further recycling or reuse.

The same principle can be applied to a wide range of aluminum-plastic composite waste, including aluminum plastic boards, composite panels, aluminum plastic pipes, punching waste, production offcuts, food packaging, pharmaceutical blister packs, toothpaste tubes, and sealing foils. The exact equipment configuration depends on the material structure, feed size, and required output quality. Dust control is also an important part of the process because crushing and grinding generate fine particles. A pulse-jet dust collection system can continuously remove accumulated dust from the filter bags, helping maintain a cleaner production environment and supporting stable operation.

The objective of aluminum PE laminated foil recycling is not simply to reduce waste volume, but to separate a low-value composite material into reusable aluminum and plastic fractions. By combining controlled size reduction, screening, air separation, and electrostatic separation, laminated foil waste can be converted into cleaner material streams for subsequent recycling and manufacturing applications.

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