Food can lids are an important part of ensuring food freshness and extending shelf life, and aluminum sheet, as its main material, occupies an important position in the field of canned packaging with its excellent performance. 3104 aluminum sheet for food can lids not only meets the performance requirements of closure, corrosion resistance and strength, but also takes into account environmental protection and food safety, becoming an ideal choice for modern food packaging.

Food can lids usually use 3000 series (such as 3003, 3104-H19) or 5000 series (such as 5052) aluminum alloys, which have good corrosion resistance, strength and machinability. In order to enhance corrosion resistance and beauty, the surface of aluminum sheet is usually anodized, sprayed or printed.

Aluminum alloy can cap material specifications

3104 aluminum sheet chemical parameters:

3104 aluminum closure sheet performance advantages:

1. Medium strength: matching the mechanical requirements of food can covers, it can provide sufficient closure performance and avoid excessive hardness leading to increased processing difficulty.

2. Strong anti-corrosion performance: Aluminum is not easy to rust, especially suitable for packaging in humid environments or acidic foods.

3. Lightweight: Aluminum has a low density, which can reduce packaging weight and transportation costs.

4. High recyclability: Aluminum is a 100% recyclable material that meets environmental protection requirements.

5. Good closure performance: Aluminum sheets can be combined with materials coated with closure coatings to ensure the closure of cans.

6. Safety: Aluminum is non-toxic and harmless to food and meets the requirements of food contact materials.

7. Good formability: Easy to stretch or deep-draw, suitable for processing into complex geometric shapes of can lids.

Quality requirements for aluminum sheets for can lids

1. Uniform thickness: Ensure the thickness of the aluminum sheet is consistent to avoid breakage or deformation during the stamping process.

2. Surface finish: The surface of the aluminum sheet should be smooth without scratches, cracks or foreign matter.

3. Comply with food safety standards: The coating material must be certified by FDA, EU standards or China's food safety GB standards.