In recent years, aluminum alloy bottle caps have been increasingly used in people's daily lives, especially in the packaging of alcohol, beverages, and medicines.
Aluminum bottle caps have simple shapes and fine production. Advanced printing technology can achieve consistent colors and exquisite patterns, giving consumers an elegant visual experience. In addition, aluminum bottle caps have good sealing performance, excellent performance and More and more applications.
Aluminum closure sheet
Aluminum bottle caps are mostly processed on production lines with a high degree of automation, so the requirements for material strength, elongation, dimensional deviation, etc. are very strict, otherwise breaks or creases will occur during the processing.
Generally, the alloys used for aluminum alloy bottle cap materials include 8011 alloy, 3003 alloy and 3004 alloy. 1050 and 1060 alloys are also used. Which alloy aluminum sheet is selected according to the stretch length of different products.
Material requirements: The bottle cap material sheet should be straight and free of rolling marks, scratches and stains.
Common alloy states: 8011-H14, 3003-H16, etc.
Material specifications: general thickness 0.20mm-0.23mm, width 449mm-796mm.
Production process: Aluminum bottle cap materials are supplied by hot rolling or continuous casting and rolling, and then cold rolled. Domestic manufacturers that produce anti-theft cover materials mostly use continuous casting and rolling billets, whose performance is better than that of cast and rolled billets.
Due to the continuous innovation of technology, the functions and production forms of aluminum bottle caps are also developing in a diversified and personalized direction. Aluminum bottle caps are not only mechanized and large-scale, but also low-cost, pollution-free, and can be recycled. Therefore, in future wine bottle caps, we may foresee that aluminum bottle caps will still be the mainstream.
Haomei Aluminum is a professional aluminum bottle cap material manufacturer, providing 8011 aluminum foil, 3105 aluminum closure sheet, 3003 aluminum sheet and other products, which meet the strict requirements of bottle cap materials. The surface of the bottle cap material should be smooth and free of roll marks, scratches and stain.
The production of aluminium caps involves a series of precise and well-coordinated processes to ensure the final product meets high-quality standards. The typical manufacturing process is as follows:
1. Raw Material Preparation
Aluminium Sheet Selection: Aluminium sheets are the primary raw materials for making aluminium caps. Usually, alloys such as 8011 is preferred for their good formability and strength. The thickness of the aluminium sheet typically ranges from 0.20mm to 0.23mm.
Surface Treatment: The aluminium sheets are sent to the preparation workshop for surface treatment, which may include processes like oxidation and electroplating. This is to improve the corrosion resistance and appearance of the aluminium caps.
2. Punching Processes
Press Hole: A hole press machine is used to press the aluminium sheet into the basic shape of the bottle cap. At this stage, the rough shape of the cap is formed.
Deep Drawing: The punched aluminium sheet is then subjected to deep drawing using a punching machine. This process shapes the cap into its final diameter and forms its three-dimensional structure. It may involve multiple drawing steps, such as the first drawing, second drawing, and third drawing, to achieve the desired shape and depth.
3. Post-Forming Processing
Cleaning: The formed aluminium caps are cleaned using specialized cleaning equipment to remove surface dirt, dust, and any residues from the previous processes.
Gluing: Protrusions are formed on the sides of the cap through gluing. This helps the cap fit tightly onto the bottle neck and prevents it from slipping.
Labeling and Printing: According to customer requirements, patterns, text, or logos are printed on the cap using advanced printing technology. This can enhance the brand image and product attractiveness.
Drying: The glued and printed caps are placed in drying equipment to dry the surface coating and ensure the stability of the printed patterns and the bonding of the glue.
4. Quality Control and Inspection
Visual Inspection: Trained operators conduct a visual inspection of the caps to check for any surface defects, such as scratches, dents, or uneven printing.
Dimensional Inspection: Precision measuring tools are used to measure the dimensions of the caps, including diameter, height, and wall thickness, to ensure they meet the specified tolerances.
Sealing Test: A sealing test is performed to check the tightness of the caps. This is usually done by applying pressure or using a leakage detection device to ensure that the caps can effectively seal the contents in the bottle.
5. Packaging and Shipping
Packaging: The qualified aluminium caps are packed into appropriate containers, such as cartons or plastic bags, for storage and transportation. They may be bundled or stacked in a specific way to prevent damage during handling.
Shipping: The packaged caps are then shipped to customers or end-users, usually by truck, train, or ship, depending on the destination and quantity.
In conclusion, the production process of aluminium caps requires a combination of advanced technology, precise equipment, and strict quality control to produce high-quality products that meet the needs of various industries, such as food, beverage, and wine.
