Choosing an HR System

The choice of an HR system depends on numerous economic, technical and even organisational factors. This problem should be considered on the basis that each mould is a component part of a production system, comprising - apart from the mould - the injection moulding machine with peripheral equipment operating in a specific organisational system. 

The lowest level of risk occurs when a standardised ready-made system is purchased -manifold plus nozzles. In justifiable cases of atypical geometry or cavity positioning, the manifold may be produced by one s own efforts, or from a semi-finished product. A better guarantee is obtained, however, by ordering a ready-made manifold, and at least consulting the nozzle manufacturer. 

The following negative tendencies are seen when an HR system is being chosen  

There are several dozen companies offering standardised HR systems. Manufacturers of injection monld bases also supply HR systems. 

These companies catalogues generally contain technical drawings with installation dimensions, and quite often examples of use. It should be remembered that the guidelines given in catalogues, e.g., gate diameters, only refer to nozzles from the manufacturer in question. 

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