Aluminum foil can be divided into heavy gauge foil, medium gauge foil and light gauge foil according to its thickness, and the thickness of aluminum foil for packaging is generally from 5.5 microns to 90 microns, it is widely used in cigarette packaging, pharmaceutical packaging, beverage, food and flexible packaging. In the industry, they are called cigarette foil, medicine foil, beer label, household foil, dinner box foil, semi-rigid container foil and bottle cap materials. The commonly used alloy grades for packaging aluminum foil include 1,3 and 8series.
The thickness of the aluminum food container is generally between 0.03mm and 0.20mm, which can be divided into two types: wrinkled wall and non-wrinkled wall. Commonly used 8011 alloy or 3003 alloy.
Whether the surface of food container is wrinkled or not, there are big different requirements for the materials. the performance of wrinkle food container is better, so the requirements for the materials are much higher.
The aluminum foil is stamped to form a food container. The surface oil is to effectively remove the rolling oil and aluminum powder remaining on the surface of the aluminum foil, and then apply food-grade lubricant (FDA). the aluminum foil is very thin, excessive stamping will cause damage, but if we apply oil to the surface of the aluminum foil will reduce friction, then reduce the rate of damage, most importantly there is anti-corrosion great feature to apply oil on the surface.
Aluminum foil has good formability, sealing performance and shielding performance, with the advancement of aluminum-plastic composite technology and aluminum foil backing paper technology, the market for packaging aluminum foil has great potential in the future.
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