Methods of manufacturing tube coupling bodies

Abstract From the Canadian patent

The disclosure relates to a method of manufacturing a tube coupling body in a plastics material using injection moulding tooling. The body is formed with a cylindrical bore having enlarged end portions in a mould body and using removable cores. The cores form both the internal bore of the mould body and also end parts of the mould body so that once the cores are removed, end parts of the coupling body are revealed in the mould. Whilst the end parts are still hot from the initial moulding operating forming dies having tapering end cavities are pressed over the end parts of the moulding to form the end parts of the moulding with both external and corresponding internal tapered surfaces. The …