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.

Benefits

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)