Flexible sheet extrusion system

The latest Welex Evolution® sheet extrusion line from Graham Engineering Corporation has given custom sheet processor Pro Ex Extrusion a thin-gauge capability not generally found among custom sheet houses. In 2017, Pro Ex partnered with Graham Engineering  to specify a Welex Evolution sheet line that would expand its capability and capacity. 

 

Commissioned in December 2017, the dual-resin PET/PP line features a 5” (130 mm) extruder with the flexibility to expand to co-extrusion. The J-stack configuration features roll-skewing and electric gap adjustment under full hydraulic load followed by a unique arrangement of auxiliary cooling rolls, each independently driven, heated, and cooled.

 

 

Based in Oskosh, Wisconsin, Pro Ex Extrusion is a recycler and manufacturer of custom and proprietary plastic products, including sheet, roll stock, profile, injection moulding, polymeric compounds, and packaging technologies for several industries. The company’s sheet business comprises roll stock for thermoforming and lithography. They also work with several experienced printing partners to apply high-quality graphics to their products.

 

While many sheet houses are able to produce PET/RPET at 15-18-20 mil, the latest model from Welex give the ability to manufacture high quality polyester at 10-12-14 mil to serve more demanding applications. Adding the ability to run high quality clear and coloured polypropylene on the same sheet extrusion line as thin as 15 mil truly differentiates this latest Welex line in the market.  

  

The Graham Group acquired majority interest in American Kuhne in 2012, followed by Graham Engineering Corporation’s acquisition of Welex in June 2013. Together, Graham Engineering, American Kuhne, and Welex create a convergence of leading technologies, people, and capabilities in extrusion.