There are several different types of blow molding, one of which is extrusion. Known as extrusion blow molding (EBM), it lives up to its namesake by extruding heated plastic into a parison. It’s a common molding process used in the manufacturing industry because of its ability to mass-produce a large volume of objects in the same size and shape.
Another common type of blow molding process is injection stretch blow molding. Using either one or two stages, injection stretch blow molding is typically used to create plastic bottles. It’s specifically effective for creating preforms of plastic bottles, which are then either sold to bottling companies or used to manufacture a bottle.