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It does, and in more than one way. Waste on an extrusion line at the vent shows up in three places. Material escaping from the port. Scrap from product with bubbles or porosity. And purge and start up waste every time the line stops to clear a blocked vent.
A vent port stuffer from Screwtech Engineering deals with all three. First, it keeps polymer in the barrel. The self-wiping twin screws convey rising melt straight back down, so you are not losing process material out of the vent port.
Second, it improves quality. Precision tolerances let you draw full vacuum, removing moisture and volatiles that cause bubbles and voids. Increased extruder pressure improves porosity. Less defective product means less scrap.
Third, it cuts stops. Because the screws wipe each other clean, the vent is far less likely to block. Fewer stops means fewer restarts and less start up waste.
Screwtech stuffers are built from high quality stainless steel, with an easy clean two-part vacuum chamber, separate seal housing and an oil filled gearbox with water cooled jacket for long life at high temperature.
With raw material costs where they are, waste at the vent is money you do not need to lose. Screwtech supplies stuffers in various sizes for twin-screw and single-screw extruders. Speak to Screwtech Engineering about your line.
For more information on Does a vent port stuffer reduce material waste? talk to Screwtech Engineering