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Wet‑Process Lithium‑ion Battery Separator Casting Pilot Line

Wet-process lithium battery separator casting pilot line is designed for separator R&D and small-batch production. It handles UHMWPE powder + white oil + additive systems, integrating dual reaction vessels, modular twin-screw extrusion, coat-hanger die film casting with three chill rolls, constant-tension winding, ultrasonic dichloromethane extraction, and hot-air drying—all on one line.

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Description

Products Description

Wet‑process lithium‑ion battery separator casting pilot line is designed for UHMWPE powder‑white oil‑additive wet‑process separator systems. As an integrated full‑process unit, it integrates dual reactors for slurry preparation, precision twin‑screw extrusion, melt pump pressure‑stabilized conveying, coat‑hanger T‑die casting, three‑roll casting & shaping, ultrasonic dichloromethane extraction and hot‑air drying. It is suitable for separator formula screening, process parameter optimization and small‑batch sample preparation.

Products Features

Full‑process integration: Completes the whole front‑end workflow of wet‑process separators on one single line, from slurry preparation and extrusion casting to extraction and drying.

Freely combinable modular screw: More than six types of screw elements can be arranged as required. Only screw configuration needs adjusting for formula change. One equipment supports process development for UHMWPE of various molecular weights, diverse white‑oil contents and different additive systems.

Alternate dual‑reactor feeding + melt‑pump pressure stabilization: Two 50L reactors enable continuous material supply. The 1.8 kW servo‑driven melt pump delivers stabilized output to eliminate screw pulsation and ensure uniform casting‑sheet thickness.

Three‑roll independent servo casting: Three Φ300 mm super‑mirror casting rolls are individually driven by 1.8 kW servo motors. Adjustable line‑speed difference between rolls allows research on effects of different draw ratios upon film crystallization and orientation. Combined cooling‑heating temperature controllers provide precise temperature control from 5 °C to 160 °C.

Constant‑tension winding + automatic edge trimming & winding: 0.75 kW servo motor realizes constant‑tension main winding; 0.4 kW independent motor collects edge trimmings for neat and wrinkle‑free rolls.

Ultrasonic extraction & explosion‑proof drying: Dual‑chamber duplex‑stainless‑steel extraction tank equipped with ultrasonic units accelerates extraction; 12 fixing frames support batch processing. The drying oven adopts explosion‑proof exhaust fans for safe removal of residual dichloromethane.

Automatic measurement & control: A 10‑inch touch screen centrally manages the whole system with real‑time display of temperature‑pressure curves and automatic fault alarm & shutdown. PLC plus host computer realizes adaptive linkage of multiple process parameters.

Products application

● Lithium‑ion battery separator manufacturers: New‑product R&D centers and pilot‑scale lines
● Power / energy‑storage battery manufacturers: Separator material evaluation and supplier comparison tests
● Polymer‑material research institutes: Research projects on UHMWPE processing and polyolefin microporous membranes
● New‑energy‑material enterprises: Separator formula development, white‑oil‑system optimization and additive screening
● Material testing & certification institutions: Standard sample‑making platform for separator materials

Why Choose Our Wet‑Process Separator Casting Pilot Line

One‑stop full‑process solution
No need to purchase separate reactors, twin‑screw extruder, casting machine, extraction tank and drying oven. One integrated unit completes all front‑end wet‑separator processes and cuts costs of multi‑equipment procurement, docking and commissioning.
Custom‑built for lithium‑ion separator R&D, not general‑purpose extruder
Ordinary twin‑screw extruders lack supporting casting and solvent‑extraction systems for UHMWPE / white‑oil separator. This whole line is tailor‑made for wet‑process separator with matched parameters, material selection and safety configuration.
Scalable process, reliable pilot‑scale data
Key components and process logic are designed referring to mass‑production separator lines. Lab‑scale test results can serve as solid reference for further pilot‑test and mass production, avoiding huge gap between lab and factory.
Comprehensive measurement‑control & safety system
Multi‑layer safety interlocks including melt pressure‑temperature monitoring and explosion‑proof protection for extraction section protect operators and equipment and reduce risks in new‑material experiments.
Professional technical support
On‑site operation training and process suggestions are provided after delivery to help researchers start separator formula development quickly.

Products video

Technical Parameters

Model	FDPL-35/35
Suitable materials	UHMWPE powder + white oil + additives
Screw diameter / L/D	35.5mm / 56
Screw speed	0–300 rpm
Output	0~50 kg/h
Reaction vessels	50L × 2, oil-jacketed, independent mold temp controller
Die width	250mm, coat-hanger T-die
Film width/thickness	0–200mm / 0.2–2mm
Line speed	0–10 m/min
Chill rolls	Φ300mm × 3, independent servo drive, mirror finish
Roll temperature control	5–160°C, oil-type chiller/heater
Extraction tank	Dual-tank, duplex stainless steel, ultrasonic-assisted
Drying oven	1300×950×1400mm, RT–300°C, explosion-proof fan
Control system	10" touchscreen + PLC, fully automatic
Power supply	3φ380VAC, 50Hz

FAQ

Q: Can this pilot line produce finished separator membrane directly?

A: This line completes front‑end processes including casting, extraction and drying to obtain cast base sheet. Subsequent MD / TD stretching for pore formation requires additional stretching equipment, which is not included in this unit.

Q:What materials can be processed?

A:Standard for UHMWPE + white oil + additive wet‑process separator system. It can also be applied for other polyolefin microporous membrane R&D subject to process feasibility.

Q: Is dichloromethane the only available extraction solvent?

A:The extraction tank is duplex‑stainless‑steel resistant to dichloromethane for standard DCM extraction. Material compatibility shall be checked in advance if other solvents are to be used.

Q:What is the output? What scale of experiment is it for?

A: Extruder capacity approx. 50 kg/h. It is for formula R&D and small‑batch sampling, not for large‑scale mass production.

Q: Are separator formulas supplied together with machine?

A: Only machine hardware and control system are provided. Ready‑made separator formulas are not included. Customers conduct independent formula exploration; we offer reference process parameters for equipment operation.

Hot Tags: Wet‑Process Lithium‑ion Battery Separator Casting Pilot Line,Lab Cast Film Machine

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