TPT March 2013

Technology News

Development project for pellet inspection

THE cleanliness of extruded material becomes more important for many applications, especially in the medical- product field, where tube quality is critical. Similarly for foil tape extrusion or during blow film process it is essential to avoid contamination. Hence there is the need for other measures to detect possible contamination in the pellet and to remove them. Aspecial challenge is thecontaminated pellet itself. Contaminants are most often not only on the pellet surface, but they are also internal and melted down in the pellet. By means of optical testing systems these contaminants cannot be detected. That is the reason why Sikora is currently developing a completely new system that differs in two ways from existing but flawed solutions: The Sikora system is based on X-ray technology and detects also contaminants in the

Flawless pellets before start of production

system is therefore hermetically sealed and there is zero risk that dust particles can get into the material flow.

pellet. The smallest detectable particle size is 50μm, at a throughput of up to 500kg/h. Higher throughput is possible by installing several units in parallel. In addition, the pellet inspection is installed directly in the joint tube between the silo/octabin and the extruder. The

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

since 1910

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M arch 2013