04.04 / 2025
The five core advantages of 8021 and 8079 aluminum foil in cold stamping
In the field of pharmaceutical packaging, the cold stamping process has put forward almost harsh requirements on aluminum foil materials-it must not only withstand high-pressure molding without breaking, but also ensure the sealing and light-proof properties of the drugs. Why can 8021 aluminum foil and 8079 aluminum foil become the “top choice” of pharmaceutical companies? This article will deeply analyze their five unique advantages. 1. King of mechanical properties: Compression molding is as stable as a rock Cold stamping molding needs to withstand instantaneous pressure of up to tens of tons, and ordinary aluminum foil is prone to cracks. The 8021 aluminum foil has an elongation of 12-15% and a tensile strength of 95MPa, and the 8079 aluminum foil has a golden ratio of 18% elongation + 85MPa strength, which perfectly balances toughness and rigidity. Actual measured data shows that under 18 tons of stamping pressure, the molding yield of the two aluminum foils can still be maintained at more than 98.6%. 2. Sealing revolution: nano-level pore blocking technology The sealing requirements for pharmaceutical packaging are almost absolute. 8021/8079 aluminum foil adopts a bidirectional rolling process, with a surface porosity of less than 0.8% (3-5% for ordinary aluminum foil). With...
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