A hard fact about plastics processing is that feed screws and barrels wear and need to be repaired or replaced in order to maintain production and quality levels. The clearance between the screw flights and surface of the barrel in a molding or extrusion machine is critical and should be closely monitored. When part quality starts to fall off, the likely culprit is barrel or screw wear. Too much clearance can also affect a machine's performance, efficiency, and energy consumption.
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