The Blow Moulding Process Step-by-step (with Diagram)

blow moulding process sequence diagram
  • Hollow tube of molten plastic is extruded.
  • This tube is enclosed in a mould.
  • Air is blown into the tube, expanding it to fill the mould cavity.
  • The plastic cools and hardens in the shape of the mould.
  • Creates hollow plastic parts in one piece.
  • Commonly used for bottles and containers.

[understand the processes of vacuum forming and blow moulding to create blister packaging – IG]