STAMIXCO AG

Switzerland

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STAMIXCO AG
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Switzerland

The SMN Injection Molding 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. 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 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. Grid Protection Disk for Mixing Elements (Type GPD) 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 Benefits & Function 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: 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 = O.D. of SNM Mixing Elements Length of one (1) GPD = Length of one (1) SNM Mixing Element

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Switzerland

StaMixCo manufacturers all three commercially proven static mixer designs used for high viscous melt flow mixing of polymers in extrusion service. As with most process equipment, each static mixer design has specific advantages and disadvantages that make it more or less suitable for a specific application and installation. Each type of motionless mixer is discussed below: Process Improvements: Temperature gradients are virtually eliminated. Viscosity gradients are virtually eliminated. Composition gradients of colorant, chemical additives, fillers and regrind are virtually eliminated. Stagnant polymer wall-creep material is incorporated into the bulk polymer stream. Extrusion Applications Static Mixers are used in most extrusion applications including the following: Sheet Blown Film Foam sheet Profile extrusion Co-extrusion Pipe Extrusion Blow Molding Rod & Tubing Wire & Cable Coatings Fiber extrusion & monofilaments Benefits Reduction of color additives with comparable extrudate color density. Even thickness across the entire extrudate width. Streak-free product. Improved quality when using regrind material. Foam cell size and cell distribution uniformity. Improved surface quality Improved mechanical characteristics. Rapid color change-over SMB-R Static Mixer SMB-GXS Static Mixer Mixing of blue and white epoxy resin with the SMB-GXS Static Melt Blender. It improves the melt homogeneity by factor 5-6. SMB-R Static Mixer The SMB-R static mixer for extrusion service (licensee of Bayer AG, Leverkusen, Germany) contains eight (8) very efficient motionless mixing elements that homogenize the polymer melt as it enters the extruder die. The SMB-R mixing elements are considered as high performance design where they create a very high degree of mixing in a short length. The SMB-R mixing elements are virtually indestructible due to their monolithic cast construction where the mixing bars are jointed to each other and to the ring wall via a single molten metal pour. Mixing of blue and white epoxy resins. Empty tube (top)provides no mixing. Eight (8) mixing elements (bottom) provide an excellent mix quality in a short length. SMB-GX Static Mixer Melt Blender The SMB-GX motionless mixer is a design that has been used in melt flow mixing extrusion service for over 25 years. The SMB-GX mixing elements are considered as high performance design where they create homogeneous mix in a short length. It has the same fundamental X-Grid crossing-bar structure as the StaMixCo SMB-R static mixer (Figure #8), but without the support ring around the mixing blade structure which gives the SMB-R its remarkable strength. Since the SMB-GX is manufactured from metal plates that are welded together, virtually any custom static mixer plate thickness, material and diameter can be fabricated to meet process and installation requirements. SMB-H Static Mixer Melt Blender The SMB-H Helical static mixer design pioneered the static mixing industry and has been used as a viscous static mixer on extruders for over 37 years. The Helical design is considered a low mixing performance-long length-low pressure drop motionless mixer as compared to the later developments of high performance static mixers such as the SMB-R and SMB-GX which have become the technology standards in the industry. StaMixCo manufactures SMB-H static mixers by advanced proprietary manufacturing technique where the entire unit is machined from a solid rod of bar stock material without welding. This machining process allows for custom static mixer fabrication in virtually any L/D twist, in very small sizes, with very high strength, straight and true dimensioning and with a RMS 12 mirror polish surface finish which is a much improved surface finish as compared to the traditional 32 RMS finish for the twisted and welded design.

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Switzerland

The GX static mixer has been used successfully for the laminar flow mixing and/or dispersion of viscous fluids for over 35 years. It is a high performance static mixer capable of mixing materials with equal or very large differences in viscosity and volumetric ratio. Mixing is accomplished in a short length with a very high degree of mixing. Mixing Capabilities Mix fluids with similar viscosity Mix fluids with high and low viscosity (1 million : 1) Mix fluids with large differences in volumetric ratio (1,000 : 1) Disperse and mix polymers with blowing agents Thermal homogenization Viscosity homogenization Applications Polymer manufacture and processing. Two (2) component viscous materials such as Liquid Silicone Rubber (LSR), adhesives, polysulfide, sealants, epoxy resins, polyurethanes, etc. Plastics Extrusion Materials of Construction, Housings and End-Connections The GX static mixer can be supplied in most materials of construction, pipe/tube housings with virtually any end connection (Figure #13). GX-P mixing elements in 9.3 - 9.4mm outside diameter size are also available in plastic construction. History of GX Static Mixing Structure The GX static mixer was invented by Bayer AG of Leverkusen, Germany in the mid 1970’s. Bayer used the GX static mixer extensively in their polymer plants and subsequently licensed the design to Sulzer Chemtech of Winterthur, Switzerland who trademarked the design as the SMX* static mixer. Sulzer did a tremendous amount of fundamental high quality R&D work on the SMX structure and commercialized the SMX static mixer in tens-of-thousands of successful installations. The founders of StaMixCo held key technical and management positions in the Koch Engineering (the later Koch-Glitsch)-Sulzer Chemtech team that commercialized the SMX static mixer. Bayer licensed their 2nd generation of the SMX static mixer to StaMixCo which is branded as the GXR structure with integral support ring around the X-Grid mixing bars as described in a previous section of this web site. * StaMixCo is not a distributor of or affiliated with Sulzer Chemtech. SMX is a brand and trademark of Sulzer Chemtech.

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Switzerland

StaMixCo manufactures a wide variety of plastic disposable static mixers for 2-component (2K) meter-mix-dispense applications. The available product range is under constant development. So please do not hesitate to contact us directly for specific requests. X-Grid Plastic Disposable Static Mixers (High Performance) For difficult mixing applications where materials to be mixed have large differences in viscosity and volumetric ratio or when a very high degree of mixing is required, the X-Grid static mixer designs are best. The X-Grid family of static mixers has the characteristic feature of an X-Grid crossing bar structure. They are best suited for difficult mixing applications where the components to be mixed have large differences in viscosity or volumetric ratio and where a very high degree of mixing is required. These demanding applications are often found in the processing of adhesives, varnishes, urethanes, sealants, liquid silicone rubber (LSR), polyols, etc. The GXF plastic disposable static mixer is available in a 10 mm diameter size with 6, 9 and 12 mixing elements. It is used for processing small flow rates in difficult meter-mix-dispense applications such as adhesives, varnishes, urethanes, sealants, liquid silicone rubber (LSR), etc. The GXP plastic disposable static mixer is available in a 9.4 mm diameter in 50% glass filled Nylon and polypropylene construction. It is used for processing small flow rates in difficult meter-mix-dispense applications such as adhesives, varnishes, urethanes, sealants, liquid silicone rubber (LSR), etc. The GXR-P plastic static mixer is available in a 30.1 mm size in 50% glass filled Nylon and polypropylene construction. It is used for processing large flow rates in difficult meter-mix-dispense applications such as adhesives, varnishes, urethanes, sealants, liquid silicone rubber (LSR), etc. The industry standard helical plastic disposable 2K static mixer is available in a very wide range of diameters, number of mixing elements, configurations and materials. It is most suitable for easy to moderate difficulty meter-mix-dispense applications. Static Helical MixerDN 35mm O.D. = 34,7mm x 110mm long, made of PP Static Helical Mixer with 4 helical elements and a total length of 110 mm for bores/pipes with I.D. of 18 to 34.7 mm, made of PP. Available in standard diameters of 18, 20, 25, 30, 34.7 mm or on request in special diameter in the range of 18–34.7 mm. Applications: Disposable static mixer for 2-components (2K) metermix-dispense, for pH-adjustment with acid or caustic (neutralisation) in watertreatment or for general mixing duties with fluids not corroding PP. Helical static mixer with fins O.D. = 24mm Mixer Pipe (O.D. = 30mm, Wall = 3mm, Lenght = 450mm) Mixer and Pipe made of PP.

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Stamixco develops and produces a variety of static mixers (stationary mixers without moving parts) for the continuous processing of polymers, liquids, gases and sludges. Highly viscous liquid processing is our speciality. Basic operations include mixing/blending of materials with similar and significant differences in the viscosity and the volumetric flow rate and melt flow rate in plastic injection moulding, extrusion and polymer production blends; continuous polymerisation plug flow reactors; heating and cooling of viscous materials and plastic disposable static mixers for dual-component (2K) resin systems. If you feel our products are suitable for your application, our engineers will be delighted to discuss it with you, come up with a design and offer a price. We produce both standard ready-to-dispatch and user-specific static mixers.

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STAMIXCO AG

Kronaustrasse 10

8404 Winterthur - Switzerland

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    1 – 10

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    Manufacturer/ Producer

Activities of STAMIXCO AG

  • Chemical industry - machinery and equipment
  • blender
  • filter nozzles
  • equipment for the plastics industry
  • mixers
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