PrimePac Ltd offer the following manufacturing processes for container production:
Extrusion Blow Moulding (EBM). Plastic is melted and extruded into a hollow tube (a parison). This parison is then captured by closing it into a cooled metal mould. Air is then blown into the parison, inflating it into the shape of the hollow bottle, container or part.
Stretch Blow Moulding. In our two-stage stretch blow molding process, the plastic is first molded into a preform using the injection molding process. These preforms are produced with the necks of the bottles, including threads. These preforms are fed into a reheat stretch blow molding machine. In this process, the preforms are heated then blown with high-pressure air into bottles using metal blow molds. Very high volumes can be produced competitively.
Injection Moulding. This is for producing parts by injecting molten material into a mould. Material for the part is fed into a heated barrel, mixed and injected into a mould cavity where it cools and hardens to the configuration of the cavity.