MACHINE OF THE MONTH: COMPLETE PLANT FOR THE EXTRUSION OF PA6 – PA11 PIPES AT 102 m/min
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07 aug 2018
Friul Fliere presents a surprising result: the highest speed ever achieved in the extrusion of PA6 - PA 11 diam 6 - 12 mm. Please watch the video to see the complete plant running.
A complete plant that delivers high production speeds, putting to good use the experience gained by the company in the pipe sector after its patented Tubeasy system proved a hit at its launch at the K2016 fair in Germany. Tests on the plant have confirmed expectations by producing a 4x6 mm pipe at a speed of 102 m/min, which is more than double the current standard speed. Ideal for the compressed air, automotive and industrial installations in particular, this plant comes complete with technology and processes developed by the in-house research and engineering team of Friul Filiere.
OMEGA SINGLE SCREW EXTRUDER
Equipped with dedicated screw designed by Friul Filiere, the single-screw Omega extruder with 60 and 36 mm diameters combines energy saving and high output rates (160 kg/h) thanks to specific technology that reduces absorption.
HEAD AND CALIBRATION
The extrusion head and calibration system are particularly interesting. The head features the Tubeasy patented system that rapidly centres the material flow in the start-up phase by simply adjusting just two screws. It appears almost incredible given the fact that traditional adjustment systems are difficult and slow to manage because of the numerous screws placed around the head that are used in order to move the flow. Tubeasy instead reduces start-up scrap by 60% and controls the material in order to improve not only the production performance of the whole plant, but also the quality and physical-mechanical properties of the end product. The cooling system, also a special feature, makes an important contribution to the positive outcome of the process. Traditionally, the calibration of PA pipes is generally done in tanks with a vacuum pump system that inevitably moves water in the tanks, as a result affecting the pipe quality. Friul Filiere has, then, developed a vacuum calibration system where the water does not move. This solution requires the application of special technology designed by the Friuli-based company for the management of complex and extreme materials like PA and PU. This technology can control flows that are otherwise difficult to calibrate and create smooth surfaces and sections that meet the minimum dimensional tolerances.
The extrusion line had to be equipped with different auxiliary machinery:
· A drying and automatic material loading system
· A masterbatch metering unit on the extruder
· An electronic marker
· A laser control system placed before the haul-off to monitor the diameter and thickness of the pipe
· A special haul-off allowing high extrusion speeds over 100 m/min.
· A semi-automatic double-reel winder at the end of the line.
ONE TECHNOLOGY, MULTIPLE PRODUCT POSSIBILITIES
This plant delivers the opportunity for production performance levels that have never been reached before, as well as high quality finished products. In this case, the products are PA pipes for applications above all in the automotive, air compressed and industrial installation sectors. However, the same technology can be applied to extrusion plants for the production of polyethylene PP-HDPE pipes for telecommunications or for cosmetics, for example, or plasticised PVC pipes, particularly for the medical sector, or for PMMA or PC pipes.