Aluminum and aluminum alloy bottle cap material is a new type of bottle cap sealing material, which not only is beautiful, but also has the function of preventing counterfeit goods. Therefore, aluminum cap closure has been widely used for beverage bottles, wine bottles, cosmetic bottles, medicine bottles, etc. at home and abroad.
The main alloys for cap closure material are 1xxx, 3xxx, 8xxx aluminum alloy sheets, coils and strips. The common tempers are H14, H16, H18 and H19. The aluminum coil thickness is usually between 0.15-0.5 mm. The two main processing crafts are cast rolling and hot rolling.
What’ the difference between two processing crafts? Take aluminum 8011 for example. Aluminum 8011/H18 is mainly for making shallow caps, which can be cast rolled. It needs no annealing treatment, so the price of aluminum coil 8011 is relatively cheaper.
Aluminum 8011/H16 is a popular type for making anti-theft bottle cap material. Its process is complicated including cold rolling, annealing, foil rolling, slitting,painting, stamping, anti-counterfeiting marking and other processes.
You can choose aluminum coils of different alloys according to your cap closure kinds. As one of the big aluminum coil suppliers, Haomei has aluminum coils, aluminum strips and aluminum sheet of different alloys for meeting the requirements of different cap closures.
Original source: https://www.hm-alu.com/a/aluminum-coil-for-cap-closure.html