Single Screw Laboratory Extruders:
Single screw laboratory extruders with diameters of 12.5, 20, 25, 30 and 45 mm, all with an L/D ratio of 30. The 12.5 mm and 20 mm extruders are available as a table top version. The 25, 30 and 45 mm extruders are available both in vented or non-vented versions with plain screws or equipped with a Maddock mixing section, as well as a pineapple mixer at the screw tip.

Scroll down the page for description of models.

                                  

 

20 mm, 30 L/D single screw extruder type LE20-30/C

! Compact bench top unit in modern design.

! Screw with Maddock mixing section at 22 D and with pineapple mixing at screw tip. Compression ratio 1 to 3. This screw version is suitable for general polyolefin processing in connection with downstream film blowing, flat film chill roll and other attachments. This screw can also be supplied with hard chroming for processing of PVC

! The extruder can also be supplied with plain 30 L/D screw with compression 1: 3,5.

! Water-cooling of feed section as well as lower part of hopper funnel.

! Large rectangular feed opening in barrel for efficient feeding of both pellets and powders.

! Screw speed infinite variable from 0 to 150 RPM.

! Large oversized 1,5 kW AC motor drive coupled directly to a helical gearbox. The gearbox is flange mounted directly to a trust bearing housing containing the screw connecting shaft, which is resting in a heavy-duty trust bearing arrangement.

! Programmable frequency inverter for infinite variable screw-speed and high torque even at low screw speeds. Digital readout of the screw RPM and motor power (Amp) on the control panel.

! 3 heating zones on barrel, all with forced air-cooling. Each zone with multiple rows of copper fins for high cooling efficiency, coupled with oversized cooling fans mounted at the rear of extruder barrel assembly. Large wattage on heaters coupled with the efficient cooling system ensures very fast heating and cooling of each zone.

! Digital programmable set and readout temperature controllers for all three barrel heating zones.

The controllers are coupled to solid-state relays for accurate heat control and are equipped with auto tuning as well as linear compensation for very precise temperature regulation over entire working range.

! C-Clamp type flange on the extruder head.

! Full steel cover over the extruder barrel with air venting grid on top.

! Convenient control cabinet built into lower part of extruder body with clear viewing from operator position.

! Stainless steel hopper, with a stainless steel 3-position turret safety valve where in one position the resin is fed directly into the screws feeding section, in the other the resin flow is shut off and in the third position the resin is discharged through a pipe on the front of the extruder barrel.

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Check out our new 12.5mm Co-ex blown and cast film lines

 

   

Compact

Film Blowing Line

type LF-250

With 20 mm, 30 L/D

extruder Type LBE20-30/C

This new line is designed to produce a professional film with optimum dispersion of colorants. The small internal volume of the die coupled to our smallest 20 mm extruders also gives minimum resin usage with fast color changeovers.

The film blowing attachment is connected to our single screw bench top extruder type LBE20-30 with a C-clamp on the flange to the extruder. The attachment is built up on an individual self-supporting frame with lockable casters and thus can be easily removed from the extruder.

Film blowing attachment type LF-250

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Scientific 30mm, 30 L/D single screw extruder

type LE30-30/C

For general processing of almost all thermoplastics,

non-vented type equipped as following:

! Screw and barrel in high-grade nitride steel, screw diameter 30 mm and L/D ratio of 30.

! Screw with Maddock mixing section at 22 D and with pineapple mixing at screw tip. Compression ratio 1 to 3.

! Screw speed infinite variable from 0 to 200 RPM.

! Large oversized drive with 7.5 KW AC motor, coupled directly to an in line heavy-duty helical gear box, which in turn is connected to an individual housing containing the oversized trust and position bearings for the screw drive.

! Programmable frequency inverter for infinite variable screw speed and high torque even at low screw speeds. Digital readout of the screw RPM and motor power in percent of full load from instruments mounted on the control panel.

! 4 heating zones on barrel, all with air-cooling. Each zone is equipped with high efficient air-cooling where copper sheets are mounted below the band heaters ending up in a multitude of fins. These fins catch the cold air and conduct it directly to the barrel. The sirocco type of cooling fans are all mounted in the extruder sub cabinet and connected to each zone with hoses. The large wattage on the band heaters coupled with the efficient cooling system ensures very fast heating and cooling of each zone.

! Digital programmable set and readout temperature controllers for all 5 zones coupled to solid-state relays for accurate heat control. The controllers are self-tuning and equipped with programmed auto compensation, ensuring a precise temperature over the entire working range of 0 to 300 C.

! Chromed Strand die head with two strands as well as one heating zone. Streamlined die channels designed for shortest possible change of colors or compound with minimum contamination. Die head fitted to the extruder C-clamp as well as mounted on a hinge so it can easily be turned aside when fitting other downstream equipment to the extruder.

! Extruder head with chromed C-Clamp, equipped with two isolated handles and a single clamping

screw for easy operation. Breaker plate for the screens is situated at extruder head, before downstream die for easy access.

! Full steel cover over the entire extruder barrel with air venting grid on top.

! Modern designed extruder body where all components are fully enclosed.

! Large built in cabinet for all electric components with swing open doors fully separated from the other extruder components.

! Convenient Swing away control cabinet, which enable full view from all desired angles.

! Stainless steel hopper, with a stainless steel 3-position turret safety valve where in one position the resin is fed directly into the screws feeding section, in the other the resin flow is shut off and in the third position the resin is discharged through a pipe on the front of the extruder barrel.

! Extruder body on four heavy-duty lockable casters.

! Output around 25 kg per hour at max screw speed 200 RPM

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Vented 25 mm, 30 L/D single screw extruder

type LE25-30/CV

The vented version of our 25 mm extruder has been developed with a special screw design, which ensures very good feeding properties without material bleeding out of the vent. The screw designs has been tested and proven with many different polymers such as LD & HD-PE, PP, PS, ABS, Nylon, PC and PET. The features are the same as listed above for our non-vented version with the following additions:

! Vented screw design with Maddock mixing section at 15 D followed by the decompression and venting zone. The screw at the vent and to the end has double flights for optimum feeding property. The tip of the screw is equipped with split open flanges for additional mixing.

! Large vent opening with housing made of Stainless Steel. It is also equipped with stainless steel swing open lid with large Polycarbonate window and with pipe connection for the vacuum pump. The swing open lid is equipped with rubber seal to give a tight vacuum fit to vent.

! Built in vane type vacuum pump driven by a 0.3 kW motor and with an air capacity of 6,000 litre per hour. A large stainless steel mesh filter protects the vacuum pump and the mesh is housed in a see through Polycarbonate container which can be easily unscrewed to clean the filter. The pump inlet is further protected with a small paper filter. Including a vacuum dial gauge and release valve mounted on the top of the extruder barrel behind the vent opening. The on/off selector switch for the vacuum pump is located just below the vent opening and is lighted red when the pump is on.

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New Scientific high output 45 mm single screw extruder

with 30 L/D, type LE-45-30/C

For extrusion of most thermoplastic resins, non-vented version equipped as following:

" Screw and barrel in high-grade nitride steel, screw diameter 45 mm and L/D ratio of 30.

" Screw with Maddock mixing section at 22 D and with pineapple mixing at screw tip.

Compression ratio 1 to 3.

" Screw speed infinite variable from 0 to   250 RPM.

" Large oversized drive with 22 KW AC servo motor, coupled directly to an in line heavy duty helical gear box with internal thrust bearings

" Programmable frequency inverter for infinite variable screw speed and high torque even at low screw speeds. Digital readout of the screw RPM and motor power in percent of full load from instruments mounted on the control panel.

" 4 heating zones on barrel, all with air cooling.

Each zone is equipped with high efficient air-cooling where copper sheets are mounted below the band heaters ending up in a multitude of fins. These fins catch the cold air and conduct it directly to the barrel. The sirocco type of cooling fans are all mounted in the extruder sub cabinet and connected to each zone with hoses. The large wattage on the band heaters coupled with the efficient cooling system ensures very fast heating and cooling of each zone.

" Digital programmable set and readout temperature controllers for all 5 zones coupled to solid-state relays for accurate heat control. The controllers are self-tuning and equipped with programmed auto compensation, ensuring a precise temperature over the entire working range of 0 to 300 C.

" Extruder head with chromed C-Clamp, equipped with two isolated handles and a single clamping screw for easy operation. Breaker plate for the screens is situated at extruder head, before down stream die for easy access.

" Full steel cover over the entire extruder barrel with air venting grid on top.

" Modern designed extruder body where all components are fully enclosed.

" Large built in cabinet for all electric components with swing open doors fully separated from the

other extruder components.

" Convenient Swing away control cabinet, which enable full view from all desired angles.

" Stainless steel hopper, with a stainless steel 3-position turret safety valve where in one position

the resin is fed directly into the screws feeding section, in the other the resin flow is shut off and in

the third position the resin is discharged through a pipe on the front of the extruder barrel.

" Extruder body on four heavy-duty lockable casters.

" Available with standard height and as Lowboy versions without extra charge.

" Output up to 60 kg/hr with LDPE when connected to a strand die.

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Optional Screen Changer Type LS-1

26mm Twin Screw Lab Extruder

Excellent for MasterBatch Compounding

 

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 insert

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.

 
Machine type Amperes at connecting voltage of 3 x 220 V, 60 Hz Amperes at connecting voltage of 3 x 380 V, 50 Hz and (3 x 480V, 60 Hz)
25 mm extruder type LE25-30C 19 11 (8.7)
25 mm extruder type LE25-30CV 20 11.5 (9.14)
30 mm extruder type LE30-30C 28.5 16.5 (13)
30 mm extruder type LE30-30CV 30.4 17.6 (14)
Water bath type LW-100 4 2.3 (1.8)
Pelletizer type LZ-120 2 1.2 , (0.9)
Filter tester type LFT44 3.15 1.8 (1.44)
Filter tester type LFT44-GP 4.6 2.7 (2.1)
Film blowing attachment type LF-400 9.7 5.6 (4.5)
Chill roll attachment type LCR-300 17 10 (7.8)
Chill roll attachment type LCR-300 with one gkw water heating unit 31.5 18 (14.5)
Chill roll attachment type LCR-300 with two gkw water heating units 46 26.6 (21)

 

Typical Mixing Screw for Single Screw Extruders,  30:1, Maddock Mixer and Pineapple Mixer

 

     
 

Call (810) 516-1700 for Pricing

Covering Michigan, Ohio, Ind, Ill, Canada for LabTech Engineering Co.
Milabtech LLC 2009

14042 Iroquois Woods Dr.

Fenton, Michigan 48430