STS Mc¹¹ Compounder

Compounders for considerable increases in throughput

With its specific torque of 11.3 Nm/cm3 STS Mc11 compounders sets new standards: it features up to 27% higher throughput rates than the preceding model, while the higher degree of screw fill results in a decrease of melt temperature, thus improving compound quality. It incorporates the full process and quality know-how of Coperion.

The STS Mc11 series is exclusively equipped with European, Coperion branded gearboxes. Maximum screw speed has been increased from 800 to 900 rpm. To improve cleaning and facilitate quick changovers for masterbatch applications, the STS twin screw extruder also features new hoppers with inserts and a redesigned die head. The screw shaft coupling is similar to the one long proven in the ZSK Mc18 series. The new, optimized base frame withstands torsion under maximum stress.

The STS Mc11 compounder covers most standard applications in process technology. It offers high productivity at an attractive price-performance ratio. Production of the STS Mc11 is in Nanjing, China, in compliance with CE directives. The result: A high-performance compounding system with low investment costs which ensures a fast return on investment. The modular design of the process section allows maximum flexibility in production at process lengths of 24 to 68 D.

Read more about the STS Mc11 two-stage compounder

ADVANTAGES OF THE STS Mc¹¹ TWIN SCREW COMPOUNDER

  • Proven Coperion manufacturing standards
  • CE certificate
  • New, optimized base frame to withstand torsion under ­maximum stress
  • Screw speeds of up to 900 rpm depending on the machine configuration and application
  • Two operation and maintenance friendly machine control concepts – BasicMaster (relay control) and TouchMaster (PLC control)
  • European, Coperion branded, high-performance gearboxes with high-tech safety clutch for safe transmission of high torque to the screw elements via involute splined shafts
  • New die head with improved heating system and optimized flow geometry
  • 4 D individual barrel with precision single zone tempering
  • High performance brass heater shells and water flash cooling with flexible connection to water manifold for optimal processing conditions in every heating zone
  • Self-wiping, co-rotating screw shafts for fast, easy changes in product and color
  • A variety of materials available for the process section: ­nitrided steel for the basic version, special high-alloy wear-protected steels for demanding processes with a high stress level

Areas of application OF THE STS Mc¹¹ TWIN SCREW COMPOUNDER

  • Filling and reinforcing of engineering plastics
  • Alloying and filling of polyolefins/TPE
  • Coloring of polyolefins and engineering plastics
  • Production of color masterbatch, flame retardant masterbatch, filler masterbatch and additive masterbatch
  • Recycling of regrind plastics, etc.
  • Cable compounds, incl. PVC, HFFR, XLPE
  • Other applications

Technical data

STS Mc11 35 50 65 75 96
Screw diameter [mm] 36 51 62 71 94
Specific torque Md/a³ [Nm/cm³] 11.3 11.3 11.3 11.3 11.3
Max. torque per shaft [Nm] 305 835 1,590 2,440 5,350
Screw speed max. [rpm] 900 900 900 900 900
Motor power [kW] 60 165 315 483 706
Throughput rate [kg/h] 260 800 1,400 2,200 4,200

 

Additional features

STS side feeder: new design with swivel arm

  • Swivel arm allows easy docking and optimal alignment to adjacent barrels
  • Engineered by Coperion Stuttgart, Germany, equipped with European gearbox, final assembly at Coperion Nanjing, China
  • High torque, deep cut screw channels and Do/Di ~ 2 to achieve high throughput rates
  • High pressure built up to 30 bar
  • High-low speed motor or frequency control motor
  • High manufacturing precision, only 2 mm clearance between side feeder screws and twin screws of STS Mc11

Feed hopper in quick-change design

The feed hopper is simply clamped to the inlet barrel and can be quickly removed by loosening the bolts. The quick-release insert which protects the barrel wall from contamination can then be changed very easily.

Quick cleaning die head

  • Simple, quick opening by loosening a few bolts
  • User-friendly assembly due to pivoting arm
  • Insertion of screens possible by using breaker plates
  • Optimized flow geometry with minimal dead space for safe strand discharge, even with highly filled products

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