Combi Screw Barrel | Integrated Feeding & Venting Barrel
Integrated barrel combining feeding and venting functions for compact and flexible configurations.
Combi screw barrels integrate multiple process functions—such as feeding, devolatilization and pressure control—into a single barrel section, enabling more compact and efficient extrusion layouts.
By combining venting and conveying within a confined space, they promote continuous melt surface renewal, enhancing devolatilization efficiency even under limited installation length.
The internal pressure profile is carefully managed to maintain stable partial-fill conditions, effectively preventing material carry-over and minimizing the risk of melt leakage at venting zones.
In addition, the integrated design reduces thermal losses and mechanical transitions between barrel segments, contributing to improved process efficiency and energy utilization.
Combi screw barrels can also be configured with integrated vacuum systems, allowing optimized sealing, shorter vapor paths and more stable degassing performance compared to conventional separated layouts.
| Inner Diameter | 20–400 mm |
| Length | 1D～8D |
| Compatible Models | Ø18–Ø400 |
| Body Material | N00/CK45/A42/Stainless |
| Liner Material | D11/W6/ H6+/H26 |
| Liner Process | Solid sleeve/Sintering Process/Laser Cladding Process |
| "∞" Hole | Cylindricity≤0.02 mm Position≤0.04mm |
| Pressure Rating | ≤50MPa |
| Operating Temperature | 0°C to 450°C |
| Heating Method | Cast copper or aluminum heaters/heating rods/electromagnetic induction heating |
| Cooling Method | Water-cooled/air-cooled/oil-cooled |
| Connection Method | Standard flange connection/clamp-type connection |
A: When space or process integration is required.
Get a Quote
Primary feeding barrel introducing raw materials into the extruder under controlled fill and stable conveying conditions.
Best suited for:
Main material feeding
Pellet and powder input
Stable process start
Barrel with vent openings enabling efficient removal of volatiles under controlled partial fill and pressure conditions.
Best suited for:
Devolatilization
Moisture removal
Vacuum venting sections
Barrel with side feeding port for controlled addition of fillers, fibers or additives during processing.
Best suited for:
Fiber reinforcement
Filler addition
Multi-component compounding
Knowledge >
Product Catalog Download >
Who are we? >
To make it more convenient for you to obtain product quotations, please check and confirm the following information in the box below.
