Non-standard methods of melt distribution in HR moulds

The need to use non-standard HR designs must always be carefully thought through in many cases, however, it may in practice lead to a simplification of the mould design. 

Moving the central nozzle away from the mould axis causes an asymmetrical mould structure, asymmetrical loading of the ejection system and an asymmetrical stress distribution in the injection machine columns. The effective mould clamping force is diminished. 

It should, however, be emphasised that only some nozzles will withstand an inclined loading by the injection machine cylinder clamping force, and such an application will require acceptance on the part of the nozzle manufacturer. 

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