Davis-Standard: Microlayer film processing

Davis-Standard recently supplied all extrusion system components, extruders through downstream equipment, for a high-level microlayer film processing project. The multi-layer configuration included extruders ranging in sizes from 40 to 115 mm, feedscrews, enhanced cooling equipment, an online thickness measuring gauge, a rollstack and conveyor, and complete system control via the EPIC III supervisory control system. The line also utilises an innovative feedblock technology for extruding films with hundreds of layers but with the thickness of a typical multi-layer film. Films being processed on the new line have 50 to 100 layers using four different high barrier film materials. The films are 6 mil thick with layers as thin as 0.002 mm. Extrusion of films with microscopic layers improves stress-cracking resistance and overall barrier properties. Markets for these films include retail products, food and medical packaging.

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