Static Mixing, Reaction, Heat Transfer & Fluid Dynamics Technology
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Model SMN™ (Injection Molding Static Mixer)

The SMN™ Injection Molding static mixer creates homogeneous mixing of polymer melt during injection. The resulting high viscosity plastic melt flow is homogeneous with regard to colorant, additives and temperature. The SMN™ (licensee of Bayer, AG) is part of our high performance X-GRID™ family of static mixers.

Figure #1: SMN Injection Molding Static Mixing Nozzle with 8 very efficient SMN Static Mixing Elements
Figure #1: Injection Molding Mixing Nozzle with 8 very efficient SMN™ Static Mixing Elements.
Figure #2: Empty nozzle (top) provides no mixing.  Eight (8) SMN Mixing Elements (bottom) create homogeneous mixing in a short length.
Figure #2: Empty pipe (top) provides no mixing. Eight (8) SMN™ Mixing Elements (bottom) create homogeneous mixing in a short length.

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

  • Reduced spots, streaks and clouds of color
  • 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

More Information
Technical Bulletin (pdf 411 kb)
Movie (wmv 1.14 MB)
Customer Specification Questionnaire (Excel 34 kb)
Operating Instructions Manual (pdf 707 kb)

FModel SMF™ Filter

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.

Figure #3: SMF melt flow filter for SMN Mixing Nozzle
Figure #3: SMF™ Filter
Figure #4: SMN Mixing Nozzle (top).  Eight (8) SMN Mixing Elements (middle) and SMF Filter with 6 SMN Mixing Elements (bottom)
Figure #4: Injection molding mixing nozzle (top). Eight (8) SMN™ Mixing Elements (middle) and SMF™ Filter with 6 SMN™ Mixing Elements (bottom)
Benefits & Function

The SMF™ Filter is designed to be used either with or without the SMN™ static mixing elements. The purposes of the SMF™ Filter are numerous:

  • Protect hot runner systems and molds by avoiding clogging and/or damage caused by metal pieces accidentally introduced with the feed pellets to the injection molding machine (e.g. staples, metal chips, paper clips, etc).
  • Retain 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 a StaMixCo 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.
  • More Information
    Technical Bulletin (pdf 226 kb)