Product Category: Twin Screw Extruders

NEW Modular 12 mm twin-screw extruders types LTE 12-36 with segmented screws and screw speeds up to 800 RPM, available both in manual as well as fully computerized version with LCD touch screen controls.

The New MicroCompounder 12 mm co-rotating twin screw extruders is made with a complete modular build up of the clam shell barrel, where each barrel section have a length of 9D or 108 mm. The length is available with 36 L/D and with drive power of 2.2 KW.

This twin is designed to be used with polymers in powder or micro pellets form with an approximate maximum granule diameter of 1.5 mm. It is suitable for processing of minute polymer quantities for research applications but it can also produce larger quantities having a maximum output of around 4 kg/hr. The amount of resin remaining in the screws is only around 10 grams so if the batch size is for instance 50 gram, the amount of polymer which is compounded and exits through the die is 40 gram.

The Clam Shell Barrel is equipped with exchangeable barrel lining inserts for optimum economy and ease of replacement. These standard inserts are made from a very high grade tool steel which is through hardened to over 60 RC and which can withstand high processing temperatures of up to 400 °C. This unique barrel insert system was designed by us in 2003 and has proven during the years to be a very good feature.

The screws are built up from individual single elements mounted on hexagonal hardened shafts. Each individual kneading elements is supplied in many angles to enable optimum variations in screw configurations. The screw components are made from high grade tool steel which is through hardened but made with a slightly softer hardness than the barrel to ensure optimum life time for both elements and barrel.

Available both in manual as well as fully computerized version with LCD touch screen controls

The MicroScientific table top 16 mm co-rotating twin screw extruders are made with a complete modular build up of the clam shell barrel, where each barrel section have a length of 4 D or 64 mm. This twin screw extruder is available with up to a 52 L/D length and with drive power of 2.2 KW. The modular Clam Shell Barrel is made of through hardened tool steel which has been hardened to 60 HRC and then nitrided to give a surface hardness of around 70 HRC for optimum wear resistance. The standard extruder has a temperature range of up to 400ºC

The screws are built up from individual single elements mounted on hexagonal hardened shafts. Each individual kneading elements is supplied in many angles to enable optimum variations in screw configurations. The screw components are made from high grade tool steel which is through hardened but made with a slightly softer hardness than the barrel to ensure optimum life time for both elements and barrel. As with our larger twin this small bench top version is also available with High Wear resistant elements made from HIP steel grades from Crucible, USA. In addition we can offer two versions of acid resistant elements where the highest resistant types are made from Inconel steel. And with this version, the screw shafts as well as the die is made from Inconel and the same goes for plugs for side feeders and vent openings on the barrel.

The whole clam shell barrel assembly is split in the center and can be easily swung open after loosening the barrel bolts. This gives easy access to the screws for cleaning or changing of screw elements and/or barrel inserts as well as to observe the melt and compounding characteristics of the polymer being processed.

Now available in High Corrosion Resistant as well as High Wear Resistant versions.  The Scientific 20 mm co-rotating twin screw extruder is the ideal laboratory extruder for production of smaller batches, be it for experimental purpose or for producing samples to your customer. This twin screw is built up exactly in the same way as our larger 26 mm version, comprising of a complete modular build up of the clam shell barrel, where each barrel section have a length of 4 D or 80 mm. Two standard lengths are available with 32 and 40 L/D and with drive powers of 5.5 KW. The modular Clam Shell Barrel is supplied as standard in the high temperature versions and it is equipped with exchangeable barrel lining inserts for optimum economy and ease of replacement. These standard inserts are made from a high grade tool steel which is through hardened to over 60 RC as well as nitrided for a surface hardness of 65 to 70 RC. The barrel with inserts can withstand high processing temperatures of up to 400 °C.

The screws are built up from individual single elements mounted on hexagonal hardened shafts. Each individual kneading elements is supplied in many angles to enable optimum variations in screw configurations. The screw components are made from high grade tool steel which is through hardened but made with a slightly softer hardness than the barrel linings to ensure optimum life time for both elements and barrel inserts.

The whole clam shell barrel assembly is split in the center and can be easily swung open after loosening the barrel bolts. This gives easy access to the screws for cleaning or changing of screw elements and/or barrel inserts as well as to observe the melt and compounding characteristics of the polymer being processed. The top half of the barrel is balanced so that very little force is needed to open it up and with this the hazard of accidental heavy closing is eliminated.

Each barrel zone is equipped with both water cooling and electric cartridge heating. This allows for complete process control at each zone of the barrel and the water cooling coupled with the high wattage heating enables fast temperature changes of each zone when changing processing conditions from one compound to another. The water cooling is done from fine channels inside each barrel module and regulated with individual solenoid valves from its designated temperature controller.

Now available in High Corrosion Resistant as well as High Wear Resistant versions

Modular 26 mm co-rotating twins screw extruder with segmented screws and barrel inserts, with barrel lengths of up to 60 + L/D and screw RPM of up to 1200

The Scientific 26 mm co-rotating twin screw extruder is made with a complete modular build up of the clam shell barrel, where each barrel section have a length of 4 D or 104 mm. Many L/D sizes are available from 32 to 60+ The standard twin has a drive power of 15 KW and a max screw RPM of 800.

The MAXICOMPOUNDER is equipped with a 22 kW AC Motor drive and a re-designed gear box comprising of  additional shaft supporting gears and a direct driven gear pump for closed loop oil cooling system. The max screw RPM with the Maxi Compounder is 1200 RPM as opposed to our standard versions where the max RPM is 800.

As of 2014, the standard 15 kW 26 mm twin screw version is equipped as standard with  High Torque screw shafts, same as we supply for the 22 kW MaxiCompounder. Further the standard twin has a new gear box which is equipped with a high efficiency forced oil lubrication system with a block type of heat exchanger to ensure the gear box is kept cold at even the severest running conditions. This also ensures optimum lubrication to all gears and bearings.

Our MaxiCompounder also have this cooled and forced oil lubrication system on its larger gearbox which is designed with a high safety factor to withstand the higher power and RPM delivered to the shafts.

The modular Clam Shell Barrel is equipped with exchangeable barrel lining inserts for optimum economy and ease of replacement. These standard inserts are made from a very high grade tool steel which is through hardened to over 60 RC and which can withstand high processing temperatures of up to 400 °C. This unique barrel insert system was designed by us in 2003 and has proven during the years to be a very good feature. In addition our twins are now available with insert made from High wear resistant steel from Crucible in USA to be used when compounding with highly abrasive components. Further our twins can be supplied with inserts made from medium corrosion resistant steel as well as very high corrosion resistant inserts made from Inconel steel types from USA. This latter steel type is useful for processing for example of Fluor plastics and other resin types which develop aggressive acids during processing.

The powder coating line comprises of a 16 mm twin screw extruder with 24 L/D coupled to a chill roll unit which will form thin flakes of the compounded thermo-setting resin. The twin extruder is equipped with 6 barrel modules, each of 4 L/D length which are equipped with either cooling or heating or both. The material in powder form is fed to the hopper with a variable speed vibratory feeder which gives a very precise feeding rate without bridging.

The screws are of same modular types as for the standard plastic twins where the single screw and needing elements are mounted on hexagonal shaft allowing for a very large variety of screw configurations.