Product Introduction

Small precision ABA co‑extrusion casting tester is a compact lab‑scale forming equipment developed by POTOP for the research and development of three‑layer polymer composite films.It fully replicates the complete industrial ABA three‑layer co‑extrusion casting workflow. The full process, including melt extrusion, three‑layer polymer confluence, rapid chill‑roll casting, traction, edge trimming and constant‑tension winding, can be completed within a limited laboratory space.
This unit is equipped with two independent precision single‑screw extruders and an ABA three‑layer distribution co‑extrusion die, enabling accurate fabrication of A‑B‑A structured films. The outer layer A can adopt identical formulations, while the middle core layer B can incorporate functional additives for modification, barrier or toughening purposes.Formulas and process parameters obtained from laboratory trials can be directly scaled‑up to industrial production lines, which greatly reduces trial‑and‑error costs and shortens the development cycle of new polymer materials. It serves as essential precision laboratory equipment for universities, research institutes and corporate R&D centers to prepare functional film samples and optimize manufacturing processes.

Product Features

✅ Precise & Controllable ABA Three‑layer Structure

Independent feeding & proportion adjustment for dual extruders. Free combination of outer A‑layer and core B‑layer materials. Clear film inter‑layer boundary and stable thickness ratio, enabling fast trials of multiple layer‑ratio schemes.

✅ High‑precision Servo Closed‑loop Drive

All key units including extruders, casting rolls, traction rollers and winder are driven by independent servo motors. High synchronous accuracy, stepless speed adjustment and consistent melt output. Effectively minimize film defects such as thickness deviation, wrinkles and tensile deformation.

✅ Advanced Temperature Control Performance

Multi‑zone independent electric heating + air‑cooling system. Temperature control accuracy reaches ±1℃. Circulating‑water temperature‑stabilized chill roll, compatible with polymers with vastly different crystallization rates.

✅ Smart Touch‑screen Operation System

Siemens PLC plus 10‑inch color touch‑screen. Real‑time visualization monitoring for temperature, melt pressure, screw speed, line speed and winding tension. Saved recipe parameters can be recalled with one click; experimental data export facilitates comparison of multiple test groups.

Main System Composition

●Dual Precision Single‑Screw Extrusion Unit

Two independently‑driven extruder hosts with separate temperature control and speed regulation, to precisely adjust the extrusion throughput of Layer‑A and Layer‑B materials.

●ABA Three‑Layer Distribution Co‑extrusion Casting Die

Optimized hanger‑type flow‑channel design with no stagnant dead zones. Uniform melt distribution for three layers; manually adjustable die lip gap.

●Casting Cooling & Setting Unit

Height‑adjustable chill roll assembly, equipped with circulating soft‑water cooling system for stable temperature control.

●Traction, Edge‑trimming & Winding Unit

Servo traction drive, pneumatic edge trimming, automatic constant‑tension winding and scrap‑edge recycling function.

●Intelligent Electrical Control System

Closed‑loop control with PLC and industrial touch‑screen HMI. Full‑process data monitoring, storage and export are supported.

Application Range

●Formulation R&D and property testing of ABA three‑layer composite polymer films

●Co‑extrusion casting process debugging, parameter optimization and pre‑production validation

●Dispersion‑effect evaluation experiments for color masterbatches and modified fillers

●Sample preparation of food‑packaging films, high‑barrier films, medical‑grade films, elastomer films, eco‑friendly biodegradable films and optical functional films

●Laboratory teaching & demonstration for polymer‑related courses in universities and colleges