general purpose
extruder

Application

GP extruders used in the common pipe extrusion. GP extruders have good price performance ratio and designed for flexibility running different PE or PP grades at good melt quality.

The specific outputs are average and not trimmed to the maximum possible result. This leads to good feeding properties also for regrind, scrap and mixtures of that with virgin materials.

  • Bimetallic barrel type A 110
  • Nitride screw with Colmonoy coated screw flight in feed section
  • Barrier screw technology
  • Standard L/D ratio 37 
  • For lower output ranges L/D 30 of 45mm & 60mm extruder
  • Straight grooved Feedbush design, temperature controlled
  • 3 step Gear for short extruder length
  • Asynchrony motor IP 54 from ABB & air cooled frequency controller from ABB 
  • Extruder control from ABB, software execution acc. CONEXTRU design features
  • Five heating cooling zones for barrel
  • Adapter and tool zones on demand
  • Melt pressure, and melt temperature measurement as standard
  • Energy consumption display
  • Control interface – touch screen mounted on control box
  • Screw ejector
  • Frame with wheels & rails, height adjustable
  • Special screw mixing tip for good color dispersion – for PPH and PPR
  • Dynamic mixing screw tip for best dispersion of carbon black or blowing agent
  • Processing of technical polymers like PA, ABS, PVDF, PPS, PC, PMMA with heated feedbush suitable up to 200 °C via external heating 
  • cooling unit with silicon oil
  • Synchron motor – multiple pole permanent magnet technology for highest efficiency, air cooled
  • Torque motor for gearless drive, water cooled
  • Low extrusion height for overhead version for pipe coating
  • Relay control version available with remote control
  • Linear grooved bush & screw geometry at feed section is an optimized system to get best linearity of output / screw speed ratio. This system has constant specific output over screw speed also at high back pressure (cable and corrugated pipe production as well for irrigation pipes).
  • Special groove shape and low compression in feed section leads to long life time.
  • Gentle melting due to long barrier section leads to best homogeneity in temperature and melt quality, at low melt temperature.
  • Barrier length and gap are designed according the required output to have shear rate within the range of best homogeneity and melting.
  • Depending on Polymer CONEXTRU GmbH has a large library of screws for standard and special technical Polymers.
  • Motor – gear ration combination and screw geometry are an optimized system for most economical production and optimum energy input. The warrantee and max output achieved at nominal speed of motor. This ensures an optimum on energy use.
Output and energy over screw speed for extruder C45 37
Output and energy over screw speed for extruder C45 37
gp extruder
Shear rate (1/sec) over barrier gap in mm for 60 40 extruder at 800 kg/h
Shear rate (1/sec) over barrier gap in mm for 60 40 extruder at 800 kg/h
Output and energy over screw speed for extruder C45 37
Output and energy over screw speed for extruder C45 37
gp extruder
Shear rate (1/sec) over barrier gap in mm for 60 40 extruder at 800 kg/h
Shear rate (1/sec) over barrier gap in mm for 60 40 extruder at 800 kg/h

high performance
extruder

Application

High Performance extruders are dedicated for max. production rate at lowest power consumption. These extruders developed for long term continuous production for same product at highest output.

Typical products are smooth or corrugated pressure or non-pressure pipes made of PE 80, PE 100 and PP-R as well as for PP-HM. HP extruder have better investment / output ratio compared to GP extruders for the same output.

  • Standard L/D ratio 40
  • Spiral grooved Feedbush design
  • Feedbush temperature controlled via proportional valve for throuput of cooling water
  • 3 step Gear for 45 and 60 mm extruder short extruder length pressure lubricated, water cooled
  • 2 step gear for 75 and 90 mm extruder long version
  • Synchrony motors air or water cooled  
  • Water cooled synchron motor
  • Torque motor for gearless drive, water cooled
  • 40 D extruders have 40 % higher spec. output and extruder has highest output at low screw speed, spiral bush reduce pressure at intake zone for longer lifetime.
  • Gentle plasticization due to long barrier section of L/D 22, therefore best homogeneity in temperature and melt consistency at low melt temperature.
  • Warrantee = production = maximum 0utput at max. Screw speed.
  • HP extruders are one size smaller in diameter for the same output and have lower energy consumption compared to GP extruders for the same output.
Diagramme Process datas HP Extruder C 60 40 output kg per hour
Process datas HP Extruder C 60 40 output kg per hour
Diagramme_Process datas HP Extruder C 60 40 output kg per rpm
Process datas HP Extruder C 60 40 output kg per rpm
Diagramme warantee output rates hp extruder
Warantee output rates hp extruder
Diagramme warantee output rates hp extruder
Diagramme Process datas HP Extruder C 60 40 output kg per hour
Diagramme_Process datas HP Extruder C 60 40 output kg per rpm

ABB control for CONEXTRU extruders

  • CP 610 PLC Control Panel 10.1″ TFT touch screen
  • Frequency controller – air cooled
  • AC asynchrony Motor type IP 54
  • AC synchron multipole or torque– for higher energy efficiency
  • Full torque – as gearless version
  • Easy handling simple screens
  • Special screen for tools with visualisation of the extrusion tool incl. cross section – to see number of heater on screen and on plug & cable, heaters with set & act temperatures
  • Display of energy consumption of drive
  • Storage of production by names and numbers
  • Pre heating program
  • Internet connection for service, process analysis to external PC, software updates,
  • Integration of gravimetric control
  • Synchronization with Conextru or other extrudes by master / slave function with Ethernet
  • Control for Gear pump
  • Control for vacuum of vacuum tank via FC of pump motors
  • Control of water temperature from vacuum tank and spray tank
  • Control for under pressure for pipe coating with tubing process by cross head
  • Coextruder C 25 30 & C 30 30 with Control version control
Control panel

wear & tear

  • Barrel Bimetallic: Depth: 3 mm, Base steel 40 Cr, Quenching and tempering: HB 260~290, Hardness: 58~62 HRC
  • Feedbush: Base steel 38CrMoAla, Quenching and tempering: HB260~290, Surface treatment: Nitride layer: 0.4-0.7mm, hardness: HV950
  • Screw: nitride steel, coating in feed section on screw flight by welding with Colmonoy Steel, 1.8850 (34 CrAlNi7), feed section full coated with Colmonoy 56 on screw flight remaining surface nitride, 900 HV layer thickness 0,4 – 0,7

Optional execution wear resistance for use or regrind, filler, abrasive colour master batches and corrosive polymers

  • Barrel Base steel: 42 CrMo, Bimetallic-Nickel based tungsten carbide, 25 % tungsten carbide liner, Bimetallic hardness HRC 58~63, Alloy depth: ~3mm per side
  • Feedbush : Material  SKD 61 , HB 260 – 290,  HRC 50 – 52
  • Screw Base steel: 1.8550 (34 CrAlNi7), Quenching and tempering: HB 260~290. Surface treatment: Tungsten carbide coating in feed section – at root and flight diameter and flight top, remaining screw body nitride, Alloy depth: 1.0 mm~1.5 mm

For corrosive polymers: screw made of Hastelloy with Colmonoy flight coating