There are several ways to manufacture plastic caps, and the specific method used will depend on the type and design of the cap being produced. Here's an overview of some common methods used to make plastic caps:
Injection molding: This is a common method used to produce plastic caps in large quantities. It involves melting down plastic resin and injecting it into a mold in the shape of the desired cap. The mold is then cooled, and the solidified cap is removed.
Compression molding: In this method, plastic resin is placed into a heated mold and then pressed into the desired shape. The mold is cooled to solidify the cap.
Blow molding: Similar to the process used to make PET plastic water bottles, blow molding involves creating a parison (a long, thin tube of melted plastic) and blowing it into a mold to create the desired shape.
Thermoforming: This process involves heating a sheet of plastic until it becomes pliable, and then using a mold or a set of forming tools to shape it into the desired cap shape.
Rotational molding: In this method, a mold is filled with plastic powder and then rotated in an oven, causing the plastic to melt and coat the inside of the mold. The mold is then cooled, and the solidified cap is removed.
Overall, the specific process used to make a plastic cap will depend on the size, shape, and design of the cap being produced, as well as the quantity being produced.
