K 2013: New film die allows structures up to 11 layers with any barrier tech

A new die for coextruding barrier films up to 11 layers can be used to produce structures using any barrier material including nylon, EVOH, PETG, and PVdC. Extrusion technology supplier Macro Engineering & Technology Inc. will introduce the new FlatPack die at K 2013 (Hall 16 at Stand B06).

Macro said it has optimized the dies design, including utilizing round flow channels throughout. This streamlines the flow of polymer, while optimizes residence time distribution and shortening it. This reduced residence time is said to virtually eliminate interfacial instability, which makes the die more versatile for a wider range of film structures. Another bonus: the die features shortened purging times, allowing processors to perform faster product changeovers with reduced scrap generation.

Macro CEO Jim Stobie says the new FlatPack is the product of a “revamped” extrusion die department at Macro. “Our objective is to provide more versatile extrusion dies to flexible film producers; dies that allow users to manufacture a broader range of products while being more reliable and with less down time,” Stobie said in a release. Part of that revamping included investments in Macro’s rheology and engineering personnel, and a refocusing by the company on its blown-film die offering with an upgrade to it CenterPack die and the launch of the new FlatPack die in October....

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