Plastic Blow Moulding Process

The raw material in this process is a thermoplastic in the form of small pellets or granules which is first melted and formed into a hollow tube called the parison.
Plastic blow moulding process. Injection blow moulding is used in the production of large quantities of hollow plastic objects. Extrusion blow molding injection blow molding and injection stretch blow molding. Blow molding is a manufacturing process that is used to create hollow plastic parts by inflating a heated plastic tube until it fills a mold and forms the desired shape. The parison is a tube like piece of plastic with a hole in one end through which compressed air can pass.
Blow molding is a special type of molding process however that leverages the properties of traditional glassblowing. The process starts with the injection moulding of a polymer onto a core pin which is then rotated to a blow moulding station to be inflated and cooled. It is also used for forming glass bottles or other hollow shapes. The blow molding process begins with melting down the plastic and forming it into a parison or in the case of injection and injection stretch blow moulding isb a preform.
Blow molding is performed using a. Typically used to make small medical and single serving bottles injection blow moulding is the. Overview of blow molding. Plastic blow molding processes are the most popular methods used to produce hollow products out of thermoplastic materials.
In general there are three main types of blow molding.