2016 | Extruder technology
Addex says that its ICE system can boost the output of blown film extrusion lines by up to 60%
in-line, pre-stretch cast film processing. It eliminates the need for traditional pre-stretching, resulting in thinner films, faster line speeds and improved film strength, says the company. Films as thin as 6 microns, at speeds from 550 to 1,000m/min (1,800 to 3,200feet/mi) can be run in three-, five- and seven-layer configurations. It is available with coreless winding to reduce waste. DSX Flex-Film, for blown film, has target applica- tions in films for laminating and converting, bag making shrink film, hood shrink film, collation film, multi-unit packaging films, roll stock and surface print films. Processors can take advantage of upgrades that balance productivity against capital investment, says the company – including multiple extruder packages and options for greater efficiency. DSX Flex-Pack, for extrusion coating, has an
adaptable configuration that gives processors the flexibility to compete in a variety of markets including salted snack and noodle bags, condiment packs and stand-up pouches.
Added output Addex says that its Intensive Cooling Experience (ICE) system – which will be launched at K2016 – increases the output of blown film extrusion lines by up to 60%. It adapts 40-year-old cooling technology and is a major improvement over conventional air-ring technol- ogy, says the company. “We’ve developed a major enhancement that takes
Reifenhäuser says that its Evolution Ultra Flat can measure and optimise film flatness
earlier technology to a higher level and sets a new bar for throughput,” said Bob Cree, president of Addex. The patent-pending design consists of a series of
cooling rings arranged in a stackable configuration to achieve higher output. Each air ring directs divergent air flow along the bubble – both upward and downward from each stacked cooling element – to provide high film-holding forces and cooling efficiency. The divergent cooling elements are assembled using simple spacer
pipes that also provide a common feed of cooling air to each cooling element level, says Cree. The stack mounts directly to the top of the die,
forming a short stack that is topped with an ICE-en- hanced Addex dual-flow air ring. The system includes an enclosure that fully sur-
rounds the stack, replacing the surrounding atmos- phere with a stable, controllable ambient pressure. Each enclosure includes variable speed, low-pressure fans to set the pressure differential between the inside and outside of the bubble. ICE includes four stackable cooling elements as
standard, yielding a guaranteed 40-60% increase in output – with high film quality assured by the enhanced stability of the ICE enclosure and cooling element designs. Two cooling elements are the minimum, but generally any number can be stacked to achieve the desired output gains.
Flat film control Reifenhäuser will showcase a number of new and improved technologies in blown film. It says that its Evolution Ultra Flat will add a third
quality feature to blown film – film flatness. Previously, it says, only film width and profile tolerance were considered. Now, it says it can measure and optimise film flatness. Flatter film can be printed more easily in subsequent
processing steps, says the company, while printing quality remains unchanged or can even be improved. Higher printing speeds are also possible, resulting in higher productivity. And, less film camber enables a
42 FILM & SHEET EXTRUSION | October 2016
www.filmandsheet.com
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