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First commercialisation of bi-oriented HDPE bottles made with injection stretch blow moulding

Total Refining & Chemicals : 20 April, 2015  (Application Story)
The first product packed with one litre bi-oriented bottles, manufactured by Incoplas Italia in HDPE produced by Total and filled/packed by ICE FOR, are now available on mass market shelves at Italian UNES stores. ICE FOR SpA Industria Chimica Ecologica is a leading producer in Italy of detergents, cleaners, emulsions, waxes and disinfectants, both for its own brand and for private labels.
This latest innovation is based on ISBM (Injection Stretch Blow Moulding) bi-oriented HDPE technology, which combines extremely low weight, high mechanical performances, and soft touch, as well as transparency.
ISBM (Injection Stretch Blow Moulding) is used for the production of high quality containers. There are four stages in the process:
Injection: Molten polymer flows into the injection cavity via the hot runner block, to produce the desired shape of the preform with a mandrel (the core pin) producing the inner diameter and the injection cavity the outer. After a set time the injection moulds and core pins part and the preform held in a neck carrier is rotated 90 degrees.
Stretching and Blowing: Once conditioned to the correct temperature the preform is ready for stretching and blowing to the finished shape. Once the preform is within the blowmould area, the moulds close, a stretch rod is introduced to stretch the preform longitudinally and using two levels of air pressure, the preform is blown circumferentially.
Discharge: After a set time for cooling the moulds open and the preform is removed via drop chutes or robotics. In practice the four stages are carried out concurrently using a revolving carousel of moulds.
For the last few years Incoplas has focused on developing ISBM bottle production using bi-oriented HDPE, with the innovative resin from Total HDPE SB 1359.
It comes in a standard range of bottles up to one litre. Compared to equivalent blow moulded (HDPE EBM) bottles weight reduction potential of up to 50% dramatically reduces environmental impact of the packaging. Total's HDPE SB 1359 resin benefits from an unique molecular design capable of being processed on ISBM machines - a real breakthrough on polymer development.
Incoplas Group has plants in Belgium, France and Italy and is a European leader in the production of rigid plastic packaging, by using the latest technologies of blow-moulding, injection and cutting-edge development of the ISBM process. It produces a high quality range of bottles and canisters, including UN approved packaging for hazardous liquids, for a wide range of applications.
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