TPT May 2016

T E CHNOLOG Y

Online and offline analysis of pellets and flakes

before the material is processed. But even with the utmost care there might be contamination, which cannot be seen by the human eye – metallic and organic contamination inside the pellets/flakes from 50μm. Therefore, Sikora recommends the usage of a Purity Concept

SIKORA has released several new models of its Purity Concept systems, which are used for the online and offline inspection and analysis of plastic material. The systems are equipped with X-ray technology, infrared technology or optical sensors and can be used for samples during the production process in order to find impurities from 50μm. Of particular interest are the new systems for the manufacture of medical hosing. An essential factor for hoses used in the medical field is the purity of all materials to ensure the highest quality for the demanding range of applications the hose will be used in. Sensitive end products require a similar reliable control and processing of the raw materials. The transport of the plastic pellets, which are usually transported in large tanker lorries and stored in a silo at the plant, shows some obvious weak points for contamination. For example, the discharge from the transport vehicle to the silo offers potential contamination from dust or other impurities. Until now only small samples have been checked manually

Purity Concept X for sample analysis

to 50kg per hour – which is common during the extrusion of medical hoses, for example – Sikora offers the Purity Concept System with conveyor belt that can easily be integrated in existing lines. Depending on the model, the device inspects pellets and flakes with optical sensors or by using X-ray technology for contamination from 50μm before the material enters the extruder.

device for inspection and analysis with optical sensors for transparent pellets/ flakes and X-ray technology for black pellets/flakes for instance. this is the only way for incoming goods inspections to ensure that the raw material already has the desired quality needed for the end product. During the processing of high-quality and, therefore, high-priced XLPE materials, it is often not enough to rely only on sample tests. Here it is useful to integrateonlineanalysis in theproduction process. For a low throughput of up

Sikora AG – Germany Email: sales@sikora.net Website: www.sikora.net

100kHz induction dryer for steel strip coating

at a rate of 220m/min, or 116 metric tons/hour. The equipment will provide a temperature rise of 90°C. The system is designed as a single, unitised package assembly that includes the frequency converter, capacitor cabinet and single turn heating coil. The project also included the interface i/o, heating control model, and water- cooling system. The installer puts the

aJaX tocco Magnethermic has ship- ped a 1,900kW, 100,000Hz induction heating dryer system to a steel strip galvanising producer in China, for the drying of coatings including passivation, with and without chrome products, and organics. the high-powered induction dryer is designed to heat steel strip from 0.4 to 2.5mm thick, and 800 to 1,676mm wide,

Single unitised assembly to locate in place

ajax tocco has provided high- powered systems with frequencies ranging from 3,000 to 450,000Hz for heating strip, depending on the customers’ requirements. Ajax Tocco Magnethermic Corp – USA Fax: +1 330 372 8608

system in place and only connects power, water and control to the respective takeover points, minimising on-site installation time. Such equipment can be packaged and used in several areas of a strip heating line, including galvanising.

Coil opening

Email: sales@ajaxtocco.com Website: www.ajaxtocco.com

26

www.read-tpt.com

M ay 2016