XPS foamed screw barrel configured for CO₂ and butane physical blowing agents. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
CO₂ and butane systems put the blowing agent in earlier and hold it in solution longer — the screw must build enough pressure without overheating the polymer. Our CO₂-duty XPS sets carry the injection port layout, sealing and cooling zoning matched to your system.
Built for new-generation eco-blowing XPS lines replacing HCFC/HCF duty. Tell us the blowing system and board line and we quote the matched set.
Quote within one business day. We reply with a matching proposal, delivery date and price — no generic catalogue PDF.
Standard range shown. Every dimension below can be changed to your machine, resin and output — custom manufacturing is our daily business.
| Screw diameter | Ø90–250 mm typical |
|---|---|
| Blowing agent | CO₂, butane or blended systems |
| Design | Pressure-building profile, agent-holding zones |
| Material | Nitrided; bimetallic option |
| Barrel | Multi-zone cooling, injection port ready |
| Lead time | 40–55 days |
The honest answer depends on your resin, not on price. Here is how we advise customers.
| Gas Nitrided (38CrMoAlA) | Bimetallic Alloy Lining | |
|---|---|---|
| Best for | Unfilled PE, PP, PS, ABS, virgin PVC | Glass-filled, mineral-filled, recycled, corrosive |
| Surface hardness | HV 900–1020, depth 0.45–0.7 mm | Alloy layer 2–5 mm, metallurgically bonded |
| Typical service life | Baseline | 3–5× baseline on abrasive resin |
| Cost | Lower | Higher, recovered through fewer stoppages |
| Certification | MTC with heat number | MTC + hardness records, third-party on request |
Usually yes with a screw/barrel change and injection port modification — send your line data and we will say what is involved before quoting.
The agent must stay dissolved: pressure profile and temperature zoning decide cell structure. A screw built for agent duty holds both.
The barrel is machined for your injector layout; we coordinate the interface drawing with your system supplier.
Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
