Model · Two-stage SE/SE
SE-120 / SE-120 Two-Stage Recycling Line
The SE-120 / SE-120 two-stage single screw line: 200–400 kg/h for film, bag and rigid regrind — melting and degassing split across two screws. A reference SE-120 SE-120 two-stage single screw extruder page from Kerke.
SE-120 SE-120 two-stage single screw extruder — workshop photo 1, Kerke workshop, Nanjing
Two-stage SE SE — workshop photo 2, Kerke workshop, Nanjing
Two-stage SE SE — workshop photo 3, Kerke workshop, Nanjing
Two-stage SE SE — workshop photo 4, Kerke workshop, Nanjing
Two-stage SE SE — workshop photo 5, Kerke workshop, Nanjing
Two-stage SE SE — workshop photo 6, Kerke workshop, NanjingQuick answer
The small SE/SE: two 120 mm single screws in series, 200–400 kg/h. Stage one melts and compacts, stage two degasses and pressurizes — the architecture for washed film and lightly printed scrap that a single screw cannot both melt and vent.
Workshop photos and a running video — shot on our own lines, not stock images.
Parameters
| Configuration | Stage 1 | Stage 2 | Output (kg/h) | Feed |
|---|---|---|---|---|
| SE-120 / SE-120 | 120 mm | 120 mm | 200–400 | Film, bag, rigid regrind |
Reference output measured on the stated material family; subject to a material trial. Motor and torque values are per machine, not per screw shaft.
Where it fits in the range
Small end of the SE/SE family: the SE-150 / SE-150 (400–800 kg/h) and SE-180 / SE-180 (800–2,000 kg/h) follow. Against a single SE-120 for dense regrind, the two-stage earns its cost only when the feed is film, bag or low-bulk-density — that is the decision boundary.
What it runs
Duties: washed PE/PP film and bags, rigid regrind with moisture, lightly printed packaging scrap, and agricultural film at the small end of industrial rates.
Configuration options
The SE-120 / SE-120 line is built around one idea: split melting from degassing so neither stage is asked to do both. Stage one runs deep-flighted and half-full to melt and compact; stage two runs shallow and full to pressurize the die and hold vacuum. Options at quotation: compacting (force) feeder with metal detector for film bales, double-station hydraulic screen changer, and the vent layout — single atmospheric plus vacuum, or double vacuum for heavily printed film.
FAQ
Why two single screws instead of one bigger screw?
One screw cannot both plasticize cold, low-bulk-density film and pull a deep vacuum — the duties need different fill and flight depth. Splitting them doubles the working length without doubling wear cost.
How dirty can the input be?
Up to roughly 5% contamination by weight with a double-station screen changer and regular purging; beyond that, washing upstream is cheaper than wear parts. We size the filtration to the feed analysis you send.
Is the output stable enough for film blowing?
Yes, with gravimetric feeding and a melt pump on the second stage — without a pump, pressure variation shows up as gauge bands. The configuration is standard on this line.
Where these numbers come from
Parameters come from the Kerke parameter table and product master data sheet, cross-checked against commissioning records for the same model and duty. Where a catalogue value and a trial value disagree, the trial value is the one we quote.
Reviewed by the Kerke process team, Nanjing. Page updated 6 November 2026.
Send 25–50 kg — we return pellets, a video and a report with the parameters we used, in 3–7 days.
SE-120 SE-120 two-stage single screw extruder — the short version
Note on SE-120 SE-120 two-stage single screw extruder: what separates one machine from another is torque class, L/D and the wear package matched to your material, not the build standard. Shortlist from the tables, then confirm the choice on a trial with your own powder.
Planning an upgrade this quarter? Send the material and the target output — the configuration comes back within one working day.
Every quotation lists the wear package as a separate line, so its cost is visible from day one.
Questions are answered the same day, in English or Chinese.
Note on SE-120 SE-120 two-stage single screw extruder: the data on this page was last verified on our own test line in Nanjing.
Not sure which SE-120 SE-120 two-stage single screw extruder configuration fits? Describe the material and the pellet shape required — we answer with a recommendation, not a brochure.
A SE-120 SE-120 two-stage single screw extruder from Kerke ships with CE documentation, a test-run record and a recommended spare set.
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