LabEx 25-3 · 3-Layer Co-Extrusion

3-Layer Laboratory Extruder for R&D, Bioplastics and Multilayer Film Testing

The LabEx 25-3 produces co-extruded blown films in small batches: develop and test multilayer film structures, evaluate material combinations, and optimise co-extrusion process parameters — simulating real production conditions with low material use and quick changeovers.

Technical specifications → Request a quotation →

Complete LabEx 25-3 three-layer laboratory blown film extruder with tower, die head and winder

Back view of the LabEx 25-3 showing three independent extruders, motors and material hoppers

3 × 25 mmextruder screws, 18-30 mm available

18 zonesPLC-controlled heating

Ø25-70 mmdie inserts (Ø40 standard)

50-300 mmfilm width

1-120 rpmconstant screw speed

Highlights

Designed for multilayer film development

Three independent extruders feeding a common die head, so you can test different layer ratios and structures in real production conditions.

Full control over each layer

Each extruder has its own motor, hopper, heating zones and temperature control. Run virgin PE in the skins and recycled material or EVOH in the core, and adjust every layer independently.

Made for testing and development

Test new plastic types, bioplastics, recycled materials and additives in real film production conditions, before committing the production line.

Minimal material waste

Evaluate multilayer structures with just a few kilograms per layer, without occupying your production line. Quick changeovers for frequent tests.

Touchscreen control

All three extruders, the die head and the take-off are operated from one 12-inch Schneider Electric touchscreen, clear and easy even without co-extrusion experience.

Compact and ready to run

A complete co-extrusion line on wheels. No special foundation or installation — connect the power supply and set up your first 3-layer test.

Industrial quality, built to last

Three nitrided steel screws and barrels, a precision 3-layer die head, three independent drives and a robust steel frame, with Schneider Electric Green Premium electrical parts.

Specifications

Main technical specifications

LabEx 25-3 three-layer laboratory blown film extruder, grouped by machine section.

Extrusion

Extruder screws3 × 25 mm diameter, L/D 28:1. All-around versatile barrier screws with integrated mixing section for good melting, stable throughput and improved dispersion of colour and additives. Suitable for most PE materials — virgin, recycled and bio-based.
Barrels3 barrels in high-quality nitrided steel, available with smooth or grooved feed zone. Built for durability, consistent performance and long service life.
Die head3-layer die head in PM 300 steel (DIN 1.2379), hard chrome or PVD treated for long service life and smooth melt flow. Die inserts Ø25-70 mm; delivered with a Ø40 mm die as standard, other sizes on request.
Temperature controlCeramic heater bands, 18 heating zones, PLC controlled.

Die & film line

Air ringHigh-efficiency air ring for bubble cooling: uniform 360° air flow with adjustable air volume for precise cooling control. Film widths 50-300 mm.
Calibrating basketAdjustable arms and rollers for precise bubble stabilisation.
A-frame & take-offA-frame with rollers for additional cooling and smooth film guidance; take-off with nip rollers, tension control and easy open/close threading.
WinderStandard non-contact winder with AC inverter control for tension and winding speed, and an air-expanding shaft for easy roll change. Contact and double-shaft winders available.

Control & electrics

ControlOne 12-inch Schneider Electric touchscreen for all three extruders, the die head and the take-off.
ElectricsMains 3 × 400 V AC, 50 Hz; control voltage 24 V DC. Nominal power 32 kW. Other mains voltage on request.
Standards & componentsIEC / DIN. Schneider Electric Green Premium PLC, HMI and inverters.
Optional equipmentScreen changers, pressure sensors, high-capacity hopper loaders, gravimetric feeding systems, inspection light panels, defect visualisation camera system.

Explore the LabEx 25-3

Machine details, film structure, controls and produced film.

Top view of the LabEx 25-3 blown film tower, die head, air ring and calibrating basket — Blown film line top view

LabEx 25-3 laboratory blown film winder with air-expanding shaft and finished film roll — Winder with film roll

Diagram showing outer, core and inner layers in a three-layer co-extruded blown film structure — Three-layer film structure

Schneider Electric touchscreen HMI controlling the three extruders, die head and take-off system — Touchscreen control

LabEx air ring and calibrating basket stabilising a laboratory blown film bubble — Air ring and calibrating basket

Fifty millimetre laboratory blown film roll produced on a LabEx extruder — 50 mm laboratory film roll

Operator loading polymer granules into a LabEx 25-3 material hopper before a test run — Material loading and start-up

Front view of the LabEx 25-3 three-layer laboratory extruder and blown film tower — Front view of the complete line

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Built in Europe, designed for sustainability.

Designed and manufactured in Denmark. From the precision 3-layer die head to the PLC control system, all key components are European sourced.

Materials

Materials you can test

Run different materials in each layer at the same time — for example virgin PE in the skins and recycled material or EVOH in the core.

LDPE LLDPE HDPE PP PA EVOH and barrier layers Recycled PE (PCR / PIR) Bio-based polymers Biodegradable & compostable compounds Masterbatch & additives

Barrier structures with PA and EVOH are supported when the line is configured for these applications.

Investment

Payback and financing

A laboratory extruder is an investment, but the correct question is not only the purchase price. The better question is: how much does each production trial really cost?

Ask for a payback calculation

When polymer waste, purge material, energy, operator time, supervisor time and lost production are included, many companies are surprised by the result. Green Extrusion Technology calculates how many tests are needed before a LabEx 25-3 pays for itself — based on your own material cost, energy cost, operator time and production trial waste.

Request calculation →

Looking for financing solutions for purchasing a lab extruder?

If it is convenient for you, we can also offer financing for the laboratory extruder in collaboration with EIFO — Denmark’s Export and Investment Fund, subject to approval. Ask for financing together with your quotation, and we will present the possibilities for your purchase of the LabEx 25-3.

Request quotation with financing