The aluminium container raw material are mainly aluminum alloys. Commonly used aluminum alloy grades include 1060, 1100, 3003, 8011, etc. These aluminum alloys have good formability, corrosion resistance and thermal conductivity, and are suitable for food packaging and cooking.
The common alloy series of aluminium container raw material include 3000 series and 8000 series aluminum alloys, as follows:
- 3000 series aluminum alloys
Representative models: 3003, 3004, 3104, etc.
Features:
– 3003 aluminum alloy: moderate price, good strength and toughness, suitable for making multi-cavity lunch boxes, and was often used in lunch box production in the early days.
– 3004 aluminum alloy: high strength, suitable for single-cavity lunch boxes, relatively high price, mainly used for high-end customers.
– 3104 aluminum alloy: contains magnesium, similar performance to 3004, and higher price.
- 8000 series aluminum alloy
Representative models: 8011, 8006, etc.
Features:
– 8011 aluminum alloy: produced by hot rolling process, high elongation, suitable for making wrinkle-free lunch boxes, beautiful appearance, often used for take-out packaging with high aesthetic requirements.
– 8006 aluminum alloy: hot rolling process, high elongation, suitable for making wrinkle-free lunch boxes, clean surface, safe and hygienic.
- Other aluminum alloys
– 6061 aluminum alloy: commonly used to make wrinkle-free lunch boxes, smooth surface, high elongation, suitable for high-end applications.
– 5052 aluminum alloy: contains magnesium, high price, suitable for semi-rigid aluminum foil containers, mainly for high-end customers.
The thickness of aluminum foil used to make aluminium containers is usually between 30 and 130 microns (μm). Different application scenarios may require different thicknesses of aluminum foil for container, for example, thinner aluminum foil is suitable for lightweight disposable tableware, while thicker aluminum foil is suitable for occasions that require higher strength and durability.
Aluminum foil is made by putting aluminum blocks through a cold rolling or hot rolling process. The aluminum ingot is first heated to a certain temperature and then rolled, and then the thickness is gradually reduced through multiple rolling until the required specifications are reached. The production process also includes an annealing step, which helps to eliminate internal stress and improve the flexibility of the aluminum foil, making it easier to process and shape.
Aluminum foil containers are widely used in fast food restaurants, takeaway fast food restaurants, home kitchens, hotels, and packaged food-related service industries, with excellent thermal insulation and environmental protection.
