DIE DEVELOPMENTS | MACHIINERY
Lip service: advances in extrusion dies
Dies for both blown and cast film require careful design and care. Recent developments include cleaning dies for medical film production and a new project to reduce die weight
Extrusion tooling design is often seen as a black art, but getting the most out of a tool – whether for blown or cast film – is very much under the con- verter’s control. Bogucki Folie, a Polish film producer, recently invested in a new Midex cast barrier line from Reifenhäuser – that includes PAM die and feed- block automation technology. The company specialises in multi-layer food and technical packaging films and barrier films. Its traditional product is a three-layer, thin ther- mostretch film for beverage packs. “Our production facilities are getting a bit aged,”
said Wiktor Bogucki, the company’s owner. “So, we’ve invested in new technologies to increase production capacity, lower production costs and reduce production waste. We also want to achieve a higher level of automation.” The company chose Reifenhäuser because its systems met expectations during tests. In particular, the new, mechatronic die and feed block automa-
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tion – PAM – has reduced the time for product changes on the line. It has also cut the amount of waste produced. “PAM gives us maximum flexibility and resource
efficiency thanks to the use of automated actuators instead of the usual thermal expansion bolts – which consume much more energy due to the permanent power supply,” he added. Investing in the new line will give Bogucki the
opportunity to take on more demanding orders in shorter series, he added. “PAM supports us when starting up new prod-
ucts, because recipes can be stored and repro- duced at the touch of a button,” he said. “The products are high quality, while we also reduce energy consumption and other production costs.” Reifenhäuser recently delivered its 150th
PAM
system – which was installed on a customer’s PET thermoforming sheet line. PAM uses high-precision electric actuators to automatically control the adjusting screws for
June 2025 | FILM & SHEET EXTRUSION 37
Main image: Kdesign says its Karat
cooling ring has a 50% higher output capacity than mid-range products
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