BLOWN FILM DIES | MACHINERY
The fully-enclosed Intensive Cooling Twin-Stack elements can be separated over a range of 1in to 16in, allowing the operator to change the height between the cooling elements to control the effect. For super low-melt materials, a short distance between the elements is ideal. For high-melt strength operation, the cooling zone can be extended to its maximum by the push of a button. The Height-Adjustable Twin-Stack system can be fine-tuned across a broad range of products without time-consuming equipment changes and while the line is running. The original fixed-height Twin-Stack system can
offers a more precise level of control by using segmented air, says the company. At NPE, Brampton will show a full-scale model of the Vector air ring.
Cool technology There are many other suppliers of cooling equip- ment for blown film. Addex, which supplies auto-profile and other cooling systems for blown film lines, showcased its latest Intensive Cooling technology during NPE. The company launched its ‘Height-Adjustable’ Intensive Cooling twin-stack system, which is designed to optimise performance for both high- and low-melt processes. It offers an enclosed, two-level, stacked Intensive
Cooling system with a lower element that mounts flat to the die and a second, height-adjustable element just below the air ring. The system is adaptable to changes in materials and supports fast changeovers.
increase output by 15-20% for very low-melt strength materials, and by 40-50% for high-melt strength materials. The Height-Adjustable version of the Twin-Stack is expected to produce even greater increases. Addex also highlighted its dual-flow air rings, available for retrofit since 2016. These replace the standard low-velocity lower lip with a single Intensive Cooling element, delivering 10-15% greater output and better bubble stability – though some processors report up to 40% gains in output rate versus the competition, it says. PolyExpert, a Canadian producer of PE film, has bought several single-element Intensive Cooling air ring systems and reported improved output. The air rings are installed with Addex’s auto-profile system. “Intensive Cooling products will continue to
evolve, fuelled by customer feedback and the learning curve, as more systems are put into operation on a variety of processes and materials in production,” said Bob Cree, president of Addex.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.macroeng.com �
www.alphamarathon.biz �
www.davis-standard.com �
www.be-ca.com �
www.addexinc.com
Left: Intensive Cooling systems from Addex can boost output on blown film lines
Xaloy®
Battery Separator Film Screw & Barrel Technology
Proven screw designs that offer the best low shear mixing action with minimal temperature rise for higher productivity, better quality parts and minimal scrap
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EXTRAORDINARY TECHNOLOGIES FOR TODAY’S PLASTICS
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