A bottle blowing mould is a precisely shaped cavity, typically metal, that forms hollow plastic containers like bottles by using compressed air to inflate a heated plastic tube (parison or preform) into its shape, similar to glassblowing, resulting in uniform, thin-walled, hollow items after cooling and hardening. These moulds, essential in plastic manufacturing, feature precise internal contours, neck finishes (like threads for caps), and often cooling channels, with designs varying for extrusion blow molding (EBM) or injection stretch blow molding (ISBM). it has 75cl bottle mould,50cl bottle mould