Product 

Presenting a new large size 3/5 layers co-ex chill roll line with downstream MDO and with a lot of new features 

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We are pleased to present the latest LabTech development of a very sophisticated high speed co-ex chill roll line which they supplied in July 2018 to a customer in Germany, Klöckner Pentaplast. This line represents a milestone in their development of more and more advanced lab and pilot lines. It was negotiated with the customer for more than one year and they were up against many competitors both from Germany and other European countries. They were selected not only due to their favorable cost structure but also because they could meet with the very special technical specifications required by the customer.

The line will be used for a multitude of polymers from polyolefin to more advanced thermoplastics like PET etc. It is equipped with two single screw extruders and one twin, feed block, die and a new design of a chill roll attachment with large 600 mm diameter rolls. Downstream the line has a new large vertical MDO unit as well as a wind up unit with automatic change over of the film rolls.

The customer visited their factory for FAT and they were truly impressed with the whole line which, as they said was far better and nicer than they expected. They praised their engineering staff who made it possible to build such a sophisticated line with so many new features and within a very reasonable production time.

Main features of this new large size high-speed co-ex line

ROLLING STACK
- Roll width 900 mm
- Roll diameter 600 mm
- Individual servo motor for all 3 rolls
- Entire rolling stack can be moved up and down remotely from the control panel
- Individual tempering unit for each roll
- Equipped with large water chiller

THE EXTRUDERS
- Two Single screw extruders of 30 and 40 mm screw diameter
- One 26 mm twin screw extruder with gear pump
- All with gravimetric feeding controlled on the central touch screen panel
- Tower with resin mixer, feeding the twin screw extruder
- Extruders on a raised platform

FEED BLOCK, DIE AND VACUUM BOX
The 3/5 layers feed block and die with vacuum box are mounted hanging from a sturdy I beam steel support

UNIQUE CONTROL SYSTEM OF THE ENTIRE LINE
The line is controlled on a central touch screen all with Siemens PLCs. This Includes all Gravimetric Feeders, also for the twin screw extruder.

The entire line including extruders, chill roll, MDO and wind up are controlled with a closed loop system. Here the gear pump on the twin screw extruder is the master and determines the output from the twin together with the two single screw extruders. We developed very special software for this purpose with assistance and advice from the engineers at Klöckner Pentaplast.

MDO FILM STRETCHING UNIT
With roll diameters of 350 mm The largest MDO unit built so far

HIGH SPEED WIND UP WITH AUTOMATIC CHANGEOVER OF FILM ROLLS
The line was recently commissioned at Klöckner Pentaplast by their team of 7 technicians and engineers. Also four engineers from Klöckner Pentaplast were assisting and advising their team and they were very pleased with the machine, giving LabTech the highest compliments for an extremely well done line and great installation work by their team which they said was truly outstanding.

 

For more information, visit Tasman Machinery Pty. Ltd.

 



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