The production of aluminum covers involves the use of punching machines and stamping molds to punch aluminum alloy plates, usually requiring double coating of the
aluminum alloy plates to ensure the dimensional accuracy and surface quality of the aluminum covers. This step ensures the dimensional accuracy and surface quality of the aluminum cover, and necessary cleaning and inspection are carried out.
The production of
plastic caps involves melting the plastic raw materials using injection molding machines and injecting them into molds for injection molding. The main raw materials for
plastic caps are polypropylene (PP) and colorants. By controlling process parameters such as injection volume and pressure, the dimensional accuracy and surface quality of plastic caps are ensured, and necessary cleaning and inspection are carried out.
The production of composite covers involves pouring aluminum and plastic covers into the corresponding turntable of a heat sealing machine for heat sealing, thereby obtaining aluminum-plastic composite covers. This step requires ensuring the firmness and sealing of the connection, and controlling the process parameters such as connection temperature and pressure.
In addition, the production of aluminum-plastic composite covers also includes hot pressing
aluminum foil and plastic layers at a certain temperature and pressure to form aluminum-plastic composite materials, then cutting the composite materials into the desired shape and size, and heat sealing the edges of the covers to ensure their sealing and stability. Finally, clean and disinfect the lid to comply with relevant standards and requirements