MACHINERY | ALTERNATIVE EXTRUDERS
Right: The P 2.0 series compounder is the latest development from Collin Lab & Pilot Solutions
ture for faster cooling, for example. Other benefits include improved heat transfer, electrical properties (conductivity), mechani- cal properties, surface finish and brilliance, as well as antibacterial properties. Using Nano Compounding Technology, Gneuss says significantly better dispersion is possible compared with conventional processes so the same material properties can be achieved with a major reduction in the quantity of additive. In many cases, the required results are achievable with such a small quantity of additive that unwanted side effects, such as colouration of the polymer due to the additive, are negligible. The company says that using the Nano
Compounding technology it is possible to disperse carbon nanotubes to achieve conductivity in a polymer without the need for it to be black. It adds that the process is also suitable for reactive extrusion.
Feeding simplicity Planetary roller extruder maker ENTEX has developed an autonomous-operable side feeder to make operation more flexible and retrofitting to existing extrusion lines easier. Side feeders are installed laterally to the process section of extrud- ers and are used to convey fillers and additives in the form of powders, fibres, granulates or pastes, as well as degassing of the extrudate. The company says that previously the integra-
tion of additional side feeders was complex. While the mechanical connection for material feeding or degassing required only a lateral connection for the roller cylinder, integration into the electrical, control and safety systems of the extrusion line was more extensive. For example, a frequency convert- er and other electronic components for the side feeder drive was required in the switch cabinet of the extruder, which often led to space problems. For the control of the side feeder it was necessary to customise the programming and visualisation of the extrusion line, as well as safety functions and control of additional auxiliary units on the side feeder. Integration of cooling water monitoring could also prove complex. With the new, autonomous-operable side
feeder, these safety-related and control modifica- tions are no longer necessary. The system requires only an appropriate power and cooling water supply. All other functions, including power supply and control of additional auxiliary units such as metal separator, dosing unit and vacuum unit, are pre-configured in the side feeder’s control system and can be controlled via the integrated touch
32 COMPOUNDING WORLD | October 2020
screen display. If interfaces are available on the extruder, autonomously-operated side feeders can also be integrated into the control system of an existing extrusion line. Collin Lab & Pilot Solutions recently intro- duced the P 2.0 series compounder, which is said to offer higher performance and improved pro- cessing of materials with poor flow properties. Collin says intelligent, function-related control has been introduced on the new model, which is adjustable for height and space-saving. According to the company, the new compounder offers 25% more performance and capacity (1,200 rpm and torque of 13 Nm/cm3
). This allows processing of
highly viscous or highly filled materials. The compounder series is available with a
processing length of 36D up to 60D. Multiple side feeders with gravimetric or volumetric dosage can be used with the compounder. Another advantage is that the screw can easily be pulled backwards out of the machine for cleaning without having to change the position of the compounder, which is useful where space is restricted. The new Collin CMI 17 control system offers the
option of exchangeable cylinder elements with coded plugs. These are automatically recognised and the system allows elements to be arranged in any order.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.centuryextrusion.com �
www.farrel-pomini.com �
www.busscorp.com �
www.x-compound.ch �
www.gneuss.com �
www.entex.de �
www.collin-solutions.com
www.compoundingworld.com
IMAGE: COLLIN LAB & PILOT SOLUTIONS
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