How Is A Plastic Bottle Made By Blow Moulding? In extrusion blow molding (EBM), plastic is melted and extruded into a hollow tube (a parison). … Air is then blown into the parison, inflating it into the shape of the hollow bottle, container, or part. After the plastic has cooled sufficiently, the mold is opened
What Are The Steps Of Blow Molding? The process is divided into three steps: injection, blowing and ejection. The injection blow molding machine is based on an extruder barrel and screw assembly which melts the polymer. The molten polymer is fed into a hot runner manifold where it is injected through nozzles into a heated
What Are The Defects In Plastics? Blister. A blister is a raised area on the plastic surface, very similar to the medical condition of the same name. … Burn Marks. Burn marks are generally caused by problems similar to blistering. … Burrs. … Embedded contaminates. … Flow marks. … Lamination. … Sink marks. … Short