Product Introduction

Lab‑scale fluoroplastic cast‑film extrusion line is a high‑precision, R&D‑oriented integrated extrusion‑casting system, specially engineered by POTOP for melt‑processable fluoropolymer materials, including FEP, PFA, PVDF, ETFE, ECTFE, THV and other high‑temperature‑resistant fluororesins.Different from conventional general‑purpose cast‑film equipment, this machine is optimized to overcome well‑known processing challenges of fluoroplastics: high melting temperature, poor melt flowability, high melt viscosity, and high risk of thermal degradation during film forming. The complete workflow covers plasticization & melting via single‑screw extruder, uniform melt distribution through coat‑hanger cast die, rapid chill‑roll casting, servo‑driven traction and constant‑tension winding. It enables researchers to produce defect‑free fluoropolymer cast‑film samples in laboratory environment.

It is an ideal pilot‑scale testing instrument for universities, research institutes, new‑material laboratories and fluorine‑chemical manufacturers to carry out new‑formula development, extrusion‑process parameter exploration, modification performance verification, and small‑batch prototype production of functional fluorine‑based films. The produced film specimens can be further tested for tensile strength, chemical corrosion resistance, weather‑aging resistance, dielectric property, barrier performance and other physical‑chemical indicators. Typical finished‑film applications cover lithium‑battery separator substrates, photovoltaic protective films, anti‑corrosion lining membranes, high‑temperature‑resistant release films, electronic‑insulation fluorine‑plastic films and other high‑end functional products.

Product Features

●High‑temperature & corrosion‑resistant extrusion system dedicated for fluoropolymers

All wetted components including barrel, screw, adapter and cast die are manufactured from high‑grade heat‑resistant, anti‑corrosion alloy material. The heating system is capable of stable continuous operation up to 450°C, fully meeting extreme processing‑temperature requirements of most melt‑processable fluoroplastics. Special‑designed screw geometry prevents material stagnation and thermal degradation, avoiding fluoropolymer decomposition and bubbling defects during extrusion.

●Precision adjustable coat‑hanger cast‑film die

Adopts advanced coat‑hanger flow‑channel design for homogeneous melt distribution across the full die width. Die lip clearance can be fine‑tuned manually to achieve uniform film‑thickness distribution and minimize edge‑bead & neck‑in issues for fluorine films. Quick‑change die design supports fast switching of different effective casting widths according to your experimental requirements.

●Mirror‑finished high‑precision chill‑roll assembly

Two‑station high‑gloss chrome‑plated cooling rollers with mirror‑polished surface deliver excellent surface finish for cast fluorine films. Each cooling roller is equipped with independent closed‑loop temperature‑control system (oil‑circulation or water‑circulation heating/cooling optional). Roller‑surface temperature uniformity is strictly guaranteed, which rapidly cools down molten fluoropolymer and reduces internal residual stress inside finished films.

●Closed‑loop servo traction & constant‑tension winding system

All traction and winding drives are controlled by independent servo motors. Real‑time closed‑loop tension control avoids over‑stretching, cracking, wrinkling and deformation of brittle thin fluorine films during winding process. Winding quality remains stable even at ultra‑low‑speed experimental conditions.

●Modular compact all‑in‑one layout, user‑friendly operation

The extruder, cast die, chill‑roll unit, traction mechanism and winding station are integrated into one compact frame. Equipped with heavy‑duty casters, the whole line can be flexibly moved and placed on lab floor or workbench. Human‑machine interface with 7‑inch industrial touch‑screen allows one‑click setting of barrel temperature zones, screw speed, traction velocity and winding tension. Frequent‑used experiment recipes can be saved, recalled and modified for repeated testing.

●Comprehensive safety protection & human‑centric design

High‑temperature processing zone is covered with transparent safety guard for operator protection. Multiple safety interlock functions are pre‑installed, including over‑temperature alarm, motor overload protection, emergency‑stop button. Reserved exhaust‑gas outlet interface can be connected to waste‑gas extraction device to remove volatile by‑products generated during fluoropolymer high‑temperature extrusion, creating a safer laboratory working environment.

Application Range

✅ Primary fluoroplastic materials (Recommended)

PFA, FEP, PVDF, ETFE, ECTFE, THV, and other thermoplastic melt‑processable fluoropolymers.

✅ Compatible thermoplastic materials (Multi‑purpose usage)

PP, PE, TPU, PLA, PEN, PET, TPO and other common thermal‑plastic resins. Only processing‑parameter adjustment is required to switch between different polymer film‑casting experiments.

✅ Main R&D & application directions

●New fluoropolymer material formulation research & modification experiment

●Exploration of critical casting‑process parameters: temperature profile, screw speed, draw ratio, chill‑roll temperature, winding tension

●Preparation of film samples for subsequent physical, chemical, electrical‑performance lab testing

●Pilot trial‑run of high‑end functional fluorine‑plastic films for battery, photovoltaic, chemical‑corrosion‑resistance, electronics‑insulation industries

●Extrusion & cast‑film forming teaching demonstration for university polymer‑processing courses