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machinery | Laboratory compounders


Labtech units range in size from 12mm to 26 mm screw diameter. This example, which was on show at Fakuma, is the LE16/FAC with a 16mm screw and an L/D of 40. Approximate maximum output is 5 kg/h (LDPE). Versions are available with L/Ds up to 60. This new version incorporates electric heating as well as fan cooling on all barrel zones, which the company says gives the same level of compounding efficiency as found on much larger twin screw extruders. Labtech, which produces its machines in Thailand, claims to be the second largest producer of laboratory polymer and pilot plant processing machines in the world (after Dr Collin). ❙ www.labtechengineering.com


reliable scale-up to larger ZSK models is possible. The IKT, which is headed by Prof Christian Bonten, now has four Coperion ZSK twin screw extruders. On the ZSK 18MEGAlab, utilities such as the water


supply system and the vacuum generating unit are integrated into the enclosed base frame together with the motor and extruder control system. Quick release connections permit rapid cleaning of the process section, which means that changeover from one product to another can be accomplished in very little time.


Dr Collin (now owned by Next Generation Recycling- maschinen - NGR) says its modular twin-screw extruders are applicable as co or counter-rotating systems for the development and production of all types of polymer mixtures. The machines can be equipped with up to seven


gravimetric dosing devices (liquid and solid) and by replacing the distribution gear, every co-rotating version can easily be transformed into a counter-rotating version. Strand and underwater pelletizing systems are available. The range of these machines extends from 12mm to 25mm screw diameter, with processing lengths of up to 54D. The throughput range is from 50 g/h to 70 kg/h.


Right: Prof Christian Bonten


(right),director of the IKT, with Frank Lechner, head of


processing


technology at Coperion,


beside its new ZSK 18


MEGAlab compounder


Equipment for hire Not all compounders can justify the capital cost of a dedicated laboratory machine. B&P Process Equipment currently has one 30 mm TriVolution reciprocating single screw compounder available for rental, with a second one on its way, says Alan Malott, product manager for continuous mixing systems. The unit fits on its own mobile platform that also houses the temperature control unit, and it has a single screw crosshead and pelletizing system. The segmented element design allows for a quick


change over from low shear to increasingly higher shear mixing based on the formulation being run. The barrel sections are also designed to be modular, which allows for complete re-arrangement of the feed barrels along the length of the shaft. The feed sections are also


48 COMPOUNDING WORLD | December 2015 www.compoundingworld.com


designed to rotate, allowing a top feed location to easily become a side feed location. Malott says the 30 mm TriVolution can be used for either small scale production or feasibility testing. “One of the major requirements of a laboratory compounder is the ability to run multiple types of material with minimal switch over,” he says. “The goal is to develop the materials and not to have to change your formula- tion based on the compounder running the materials.”


Click on the links for more information: ❙ www.feddem.comwww.leistritz.comwww.kraussmaffeiberstorff.comwww.centuryextrusion.comwww.entek.comwww.jsw.co.jpwww.toshiba-machine.co.jpwww.norisplastic.dewww.steerworld.comwww.brabender.comwww.coperion.comwww.drcollin.dewww.bpprocess.com


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