Canadian Plastics
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High-output film line

A new die concept, ProPak, in combination with the new cooling ring WesJet II and ENTRAC, allows for high outputs and better gauge tolerances on Davis-Standard's ProSack, a three-layer coextrusion blo...


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January 1, 1999 by Canadian Plastics


A new die concept, ProPak, in combination with the new cooling ring WesJet II and ENTRAC, allows for high outputs and better gauge tolerances on Davis-Standard’s ProSack, a three-layer coextrusion blown film machine for shipping sack applications. ProSack can run various LDPE, LLDPE and mLLDPE resins.

A key component of the ProSack line is the 60mm 30:1 L/D, air-cooled MAC extruders, that have one common remote blower that draws room air over the barrel heater through the plenum base into an exhaust duct. Cooling air is regulated by a damper valve under each zone, providing a simple, low maintenance solution. The key process advantage is the significant reduction in gauge-affecting drafts on the bubble and a highly responsive barrel cooling system.

Davis-Standard Corp. 860/599-1010

(Circle 94)