The SMN Mixers is probably the most efficient available  for injection moulders, in many cases it can be used as an alternative to the expensive option of producing a new injection screw profiles with modified profiles.


The SMN Injection Moulding Static Mixing Nozzle creates homogeneous mixing of polymer melt during injection. The resulting high viscous polymer melt flow is homogeneous with regard to colorant, additives and temperature.

The StaMixCo SMN Injection Moulding Mixing Nozzle contains eight (8) very efficient static mixing elements that homogenize the polymer melt during injection. This homogenization is achieved by the continuous division of the molten polymer and its recombination when processed through the geometric structure of the mixing bars

Epoxy cut-away showing mixing properties of SMN static mixers
SMN Injection moulding mixing nozzle assembly

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Superior Mixing - Reduction of colour concentrate additives of as much as 30% can be achieved with comparable part colour density.

Showing masterbatch effect without SMN static mixer
Showing masterbatch effect with SMN static mixer

2% Master batch Without Static Mixer

2% Master batch With Static Mixer



Outstanding melt flow mixing of molten polymer prior to injection results in the following benefits:

Reduced spots, streaks and clouds of colour

Reduced colorant usage (10% - 40)

Narrower part tolerance

Reduced reject rates

Less part distortion

Less weight variation

Improved part quality when using regrind material

Shorter cycle time

Improved melt flow

Increase regrind ratio with consistent product quality

Rapid nozzle heat-up

Normal Pay-back period of 2-3 months

Filter for Injection Molding Static Mixing Nozzle (Type SMF)

The optional SMF Filter is installed inside of the Static Mixing Nozzle to protect the hot runner system and mold when processing regrind materials by avoiding clogging and/or damage with debris carried along with the feed pellets


The SMF Filter is designed to be used with the SMN Injection Molding Mixing Nozzle. The purpose and functionality of the SMF filter are numerous:

SMF filters can be used with or without SMN static mixers

SMF melt flow filter for SMN Mixing Nozzle

SMN static mixing nozzle with SMF filters

SMN Mixing Nozzle (top). Eight (8) SMN Mixing Elements (middle) and SMF Filter with 6 SMN Mixing Elements (bottom)

Protects hot runner system and mold by avoiding clogging and/or damage caused my metal pieces accidentally introduced with the feed pellets to the injection molding machine (staples, metal chips, paper clips, etc).


Retains semi-molten polymer pellets until melted for incorporation into the polymer melt


For customers with poor thermal control systems, the SMF Filter acts as an upstream breaker-plate to prevent “cold-start” crushing of the mixing elements.


Designed to retrofit into the SMN Injection Molding Mixing Nozzle without nozzle modification


O.D. of SMF Filter = O.D. of SMN Mixing Elements


Length of one (1) SMF Filter = Length of two (2) SMN Mixing Elements


O.D of GPD (Grid Protection Disc) = O.D. of SNM Mixing Elements


Length of one (1) GPD = Length of one (1) SNM Mixing Element

Grid Protection Disk for Mixing Elements (Type GPD)

GDP Grid protection disks stop damage to SMN filter elements

Designed to prevent damage to mixing elements during cold start situations


The optional GPD Grid Protection Disk is installed inside of the Static Mixing Nozzle upstream the first mixing element. During the start-up operation it avoids a possible so called “cold-start” damage of the mixing element grid by plugs of not completely molten and thus partly solid polymer plugs originating from the transition part between the end of the barrel and the Static Mixing Nozzle

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