What is Blow moulding?

Blow molding (also spelled blow moulding) is a manufacturing process by which hollow plastic parts are formed. It involves inflating a hot plastic tube (parison or preform) inside a closed mold until it conforms to the mold's shape. After the plastic has cooled and hardened, the mold is opened, and the part is ejected. It is commonly used to manufacture high-volume, hollow plastic products such as bottles, containers, and automotive parts.