Product Introduction

A/B/A three-layer co-extrusion cast film pilot line is specially engineered for material laboratories, universities and R&D departments of new material companies. It supports formulation development, process exploration, multilayer composite structure research and small-batch sample preparation for general plastics and biodegradable polymers.

Built on an all-in-one compact frame, the machine saves valuable lab floor space. Two single-screw extruders feed melt into the ABA coat-hanger co-extrusion die. All functional sections including extrusion, cast roll, chill roll, haul-off, winding and edge trimming are driven by separate servo motors for synchronized and flexible speed matching. The screw and barrel are made of 38CrMoAlA with polishing and nitriding treatment for superior wear and corrosion resistance. Stable temperature and pressure control ensures excellent repeatability of trials, producing smooth, consistent three-layer cast films for performance comparison under different formulations and processing parameters.

Product Performance

ABA 3-Layer Coextrusion Coat-Hanger Die

The coat-hanger flow channel ensures even melt distribution for consistent layer thickness. The die land is hard chrome plated and mirror polished for high-quality film surface. The inclined die design allows convenient disassembly, screw cleaning and frequent color / resin switching for formulation screening.

Independent Full Servo Drive, Wide Process Window

Servo motors for every station provide fast response and high control accuracy. Screw speed and roll line speed can be adjusted freely across a wide range. Users can easily tune processing parameters to match polymers with different melt strength and find the optimal processing window.

High-Accuracy Temperature Control for Diverse Polymers

Operating temperature ranges from ambient to 350°C with control accuracy ≤±1°C. The barrel uses ceramic band heaters plus air cooling. Cast roll and chill roll adopt internal channel water circulation for stable roll temperature regulation. It works reliably with polyolefin, biodegradable resins and most engineering polymers.

User-Friendly Structure for Fast Material Change & Cleaning

Rotary quick-release feed hopper requires no bolts and can be lifted out entirely for cleaning. Plug-in 304 stainless steel screen changer speeds up screen replacement. The cast roll supports vertical lifting and the auxiliary unit slides forward & backward on linear guides to adjust air gap. Cantilever pneumatic haul-off enables single-hand threading, so one operator can run the whole trial independently.

Intuitive HMI Control with Visual Process Data

A 10-inch or larger touchscreen centralizes all operations for extrusion, casting, haul-off, winding and edge trimming. Real-time temperature and pressure curves are displayed on screen for full process visibility. Built-in fault alarm and log function helps technicians locate issues quickly. Process recipes can be saved for repeat testing and comparative study.

Reliable Safety Protection & Long Service Life

Integrated carbon fiber thermal shield isolates high temperature for surface cooling. Emergency stop button on control panel guarantees immediate shutdown in risky situations. All rolls are hard chrome plated and mirror finished for scratch resistance. Nitrided screw & barrel offer outstanding durability for long-term repeated lab runs.

Application Fields

R&D of biodegradable packaging films, multi-layer barrier films and functional modified films. 

Material teaching in universities, fundamental research in research institutes

new product sampling and formulation verification for polymer manufacturers.