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 mono-materials 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.
PBL is much environmentally friendly
Replace a few key parts on your machine to run PBL laminates without problems of quality or speed.
This upgrade kit is available for all our recently produced side seamers with the exception of the BLM/Prestige Body Maker .
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
With the Fast PBL upgrade kit, your machine can meet today’s PBL tube quality requirements, which means a perfect seam at the same speed as known when making ABL tubes. Differently from aluminum barrier laminate, where the heat is generated by induction within the aluminium layer itself, the heat to weld PBL tubes can only be applied from the inside and outside of the tube. In order to control the heat optimally it is required to separately adjust the power from in- and outside.
The Fast PBL kit requires additional or replacing components. It is important to know that the combination of all elements together make the difference!
We did several tests on multiple machines, with great results. It is hard to come up with numbers which are the same for every laminate as each laminate behaves differently. We are currently doing further tests on our machines with the clear target to run PBL without any speed loss. On our 500 tube per minute machine, the SHOT line, we will soon reach a speed of 100 meters per minute. That will boost what is already the world’s fastest PBL tube making line a big step further.
In future it will not make any difference in speed if you run ABL or PBL.