The history of aluminum screw caps can be traced back to the early 20th century. Initially, most bottle caps were made of metal, but lacked a threaded structure, making them non-reusable. Aluminum, with its light weight, corrosion resistance, and easy processing, has become an ideal material for screw caps. In the 1950s, with the development of the aluminum industry, aluminum screw caps began to replace steel screw caps and were widely used in beverages, food, medicines and other fields. Aluminum screw caps not only extend the shelf life of the product, but also make it more convenient to open the bottle, and are gradually recognized by consumers.

Spiral aluminum caps are mainly made of aluminum alloy materials, and common ones are 8011 aluminum foil, 3105 aluminum closure sheet, etc. These aluminum alloys have good ductility, processability and corrosion resistance, and can meet the molding and use requirements of screw caps.

Other materials:

• Inner lining: In order to improve the sealing and protect the contents, the screw aluminum cap is usually lined with a lining, which can be plastic, rubber, etc.

• Coating: In order to increase the aesthetics and corrosion resistance of the screw cap, a coating is sometimes applied to the surface of the aluminum cap, and the coating material can be epoxy resin, polyester, etc.

Core features of 8011/3105 aluminum sealing plate:

1. Lightweight: Aluminum alloy has a low density, and the screw cap made of it is light in weight, which is convenient to carry and use.

2. Easy to process: Aluminum alloy has good plasticity and is easy to process into screw caps of various shapes and sizes.

3. Corrosion resistance: An oxide film can be formed on the surface of aluminum alloy, which has good corrosion resistance and can effectively protect the contents.

4. Aesthetics: The surface of aluminum alloy has a high gloss, and various coatings and printings can be performed to make the screw cap look beautiful.

5. Easy to recycle: Aluminum alloy can be recycled and reused, which meets environmental protection requirements.

Specifications:

Application areas:

• Beverage bottle caps: used for sealing of various carbonated beverages, fruit juice drinks, etc.

• Wine bottle caps: used for sealing of various liquors, beers, wines, etc.

• Food can caps: used for sealing of various canned foods.

• Drug packaging: used for packaging of certain drugs.

• Cosmetic packaging: used for packaging of certain cosmetics.

Why use aluminum screw caps for bottle mouth sealing?

1. Good sealing: The screw aluminum cap can effectively seal to prevent leakage and deterioration of the contents.

2. Easy to open: The screw aluminum cap is easy to unscrew, which is convenient for consumers to use.

3. High safety: Aluminum alloy materials are non-toxic and harmless and meet food safety requirements.

4. Strong customizability: The spiral aluminum cap can be customized according to customer needs, including size, shape, color, printing, etc.

Compared with traditional plastic bottle caps, aluminum alloy bottle cap materials have good sealing and no leakage. For example, with PE pads covered with aluminum foil, its oxygen permeability is smaller and its water permeability is lower. In addition, 8011/3105 aluminum alloy bottle cap materials can be used for large-area fine printing, multi-color printing, side roll printing, etc., and a variety of technologies can be applied, with large design space, easy color matching, good saturation, and high finish. In addition, low cost, good food safety, and recyclability are also the advantages of aluminum anti-counterfeiting bottle cap materials.