When looking at the end of a tube life, recycling of multi-material structures like ABL (aluminum barrier laminate) is very difficult and economically not viable.
New material developments focus on monomaterials which are ideally compliant with already existing recycling streams. To reach that goal, the aluminium layer is replaced by a plastic barrier – usually EVOH. Plastic Barrier Laminates (PBL) are more and more often made with low MFI-HDPE’s or even PP materials enabling the tubes to be recycled and used in the production of blown-bottles.
The «standard» PBL laminates developed up to recent years work perfectly on our existing systems. However, due to the many new laminate developments and the various properties that they bring with them, we have developed the Fast PBL Upgrade. This means that running PBL the same way as ABL is possible but not recommended as there can be some problems such as:
This means that the quality of the tubes is not acceptable for the brand owners. In addition, there will be higher rejection rates and therefore higher production costs.
The Fast PBL kit requires additional or replacing components. It is important to know that the combination of all elements together make the difference!
The Fast PBL retrofit is available for all our continuous side seamers except the BLM/Prestige Body Maker model.
Install a second High Frequency generator for
separate power control of the inner and outer steel
Replace the existing seamer mandrel by a “flat
mandrel”. The special flat shape and the new
cooling design results in less ovality.
Upgrade the cooling section to the patented
“DuraSeam® Air” system to improve the cooling
performance from outside.
Install the newly designed ovality control unit (OCU)
at the end of the mandrel to ensure the roundness
of the tube.