Get Listed
The right size vent port stuffer depends on your extruder. There is no one size fits all, which is why Screwtech Engineering offers various sizes to suit a wide range of twin-screw and single-screw extruders.
The main things to consider are the make and size of your extruder, the dimensions of the vent opening on the barrel, the throughput you are running or want to run, and the material you are processing. Highly filled compounds, materials that foam as they degas and high throughput lines all put more demand on the vent.
Getting the size right matters. Too small and the stuffer may struggle to handle the melt rising at high fill levels. The right size lets you run fuller, draw full vacuum and keep material in the barrel.
Whatever the size, every Screwtech stuffer shares the same core design. A self-wiping twin-screw arrangement keeps melt out of the vent and stops build up. Precision tolerances allow full vacuum. High quality stainless steel construction, an easy clean two-part vacuum chamber, a separate seal housing and an oil filled gearbox with water cooled jacket for long life at high temperature.
Screwtech also designs and manufactures bespoke parts and modifications for twin extruder lines, using up to date 3D CAD modelling software, so unusual setups can be discussed.
The easiest route is to get in touch with Screwtech Engineering with your extruder details and what you are trying to achieve. They will help you pick the right unit.
For more information on What size vent port stuffer do I need? talk to Screwtech Engineering