CommonTec
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PTFE extruding procedure with pastextruders
Pasteextruder The paste extruding applied to production of thin hoses, thick pipes (liners), wire insolation and unsintered tapes of PTFE. CommonTec - paste extrusion guarantee a flexible production with continuously high extruding quality. Decisive for this are, apart from the precise machine and tool construction, very exact sensor technology as well as dynamic and accurate monitoring systems. Both was yardstick for the development of the CommonTec pastextruders. For the PTFE paste technology excluding emulsion polymer powders are used. The paste is a mixture of PTFE powder types and an organic liquid (gasoline, light oil). Extruding is accomplished in loads: The paste is used first to so-called gathering molds squeezed afterwards into a paste extrusion and pressed out then by a conical trained nozzle in the cold and/or easily warmed up condition (approx. 40-60 °C). The lubricant containing extrudate is released after the shaping in a drying zone from lubricant and sintered afterwards. Due to the different demand requirements each paste extrusion is adapted to the customized requirements. At present we have 30 different models with diameters up to 600mm and a max. pressing force of 2000kN. Extrusion can be trained both hydraulically, and mechanically over screw pillar. To the extruding unit belong in series the gathering mold press, load system, DCONTROL Datalogger, as well as DCONTROL remote system. Additionally naturally further rich accessories are available to become fair the each demand requirement.