At K-2007, Macro Engineering & Technology Inc. will be showing a 7-layer MacroPack blown film coextrusion die outfitted with Macro's patented encapsulation technology.
Available on all of Macro's BXL Series of multilayer blown film lines, Macro's encapsulation technology provides the processor with the ability to produce 9-layer films on 7-layer dies, or 5-layer films on 3-layer dies. The advantages of encapsulation are even more evident when producing multilayer films with easily degradable materials, such as EVOH, PVdC, and Barex, or materials that are difficult to purge, like Nylon and polyesters. Degradable polymers can be encapsulated with tie layers, which do not allow the encapsulated polymer to contact the surfaces of the adaptors and die, thereby preventing degradation of the polymer and reducing its residence time in the die.
By encapsulating with easily purged materials, the purging times are dramatically shortened and the amount of purge material consumed is reduced. These improvements in line flexibility and waste reduction translates into tremendous savings for the processor.
Among the other items on display will be Macro's recently upgraded D10 PRO Automatic Dual Lip Air Ring. The D10 PRO provides processors with the desired improvement in gauge uniformity without preventing loss in cooling efficiency. Based on Macro's signature D10 Air Ring, the D10 PRO offers outstanding cooling efficiency, versatility, excellent bubble stability, and superb gauge uniformity. For more details about the D10 PRO, see our Spring 2007 MacroLetter, or visit us online at www.macroeng.com.
