Bimetallic barrel for blown film lines running recycled-blend and contaminated feed. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Film lines that went recycled feel it in the barrel first: paper, grit and fine mineral from the waste stream abrade the bore, and gauge stability goes with it. This bimetallic barrel keeps the bore round and the melt pressure flat — which is what your gauge actually reads.
Built for Ø45–150 film extruders, mono or co-ex. Send the resin blend and recycled percentage and we match the lining.
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.
| Bore diameter | Ø35–150 mm typical for film duty |
|---|---|
| Lining | 2–3 mm abrasion alloy, honed |
| Duty | Recycled-blend blown film |
| Benefit | Flat melt pressure = stable gauge |
| Service life | 3–5× nitrided on recycled blend |
| Lead time | 30–45 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 |
Very likely: bore wear flattens melt-pressure stability and the die reads it as gauge. A bimetallic bore usually restores it; we will confirm from your extruder and wear figures.
Yes — we copy flange, dowel and cooling layout from your drawing or the old barrel.
Recommended — we supply matched screws with hardened lands for recycled duty.
Alloy-lined barrel bore for recycled, filled and corrosive materials.
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Custom flanged barrel for extrusion and injection machines.
View Details →Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
