This three-in-one hot lamination line is designed for automatic, continuous bonding of the ion exchange membrane with sealing frames on both sides for vanadium, iron-chromium, or other flow batteries.
It precisely laminates the membrane with upper and lower insulating sealing frames (e.g., PP, PVDF, fluoroelastomer) through heating, pressing, and cooling to form a sealing-frame – membrane – sealing-frame structure in one step. The resulting membrane-frame assembly isolates electrolytes, prevents cross-mixing, and provides mechanical support and edge sealing.
The line integrates hot-melt adhesive cutting, frame feeding, membrane alignment, lamination, and in-line inspection for high-efficiency, consistent mass production.
PRODUCT DESCRIPTION
Process Flow
●Automatic Unwinding/Feeding – Ion exchange membrane and upper/lower sealing frames (roll or sheet stock, optionally pre-coated with hot-melt adhesive) are precisely positioned via correction devices.
●Preheating – Three-stage preheating zones uniformly raise the material temperature to the set point, eliminating internal stresses.
●Hot Lamination – Dual heated rollers / flatbed lamination units apply accurate pressure and temperature to achieve bubble-free, high-bond-strength lamination of the sealing frame – ion exchange membrane – sealing frame three-layer structure.
●Cooling & Setting – Cooling rollers / cooling plate rapidly reduce the temperature to fix dimensions and shape, minimizing rebound deformation.
●In-line Inspection – Vision system inspects lamination position and surface defects; thickness sensors monitor uniformity.
●Fixed-length Cutting / Rewinding – Cut into sheets or rewind according to process requirements, delivering qualified membrane-frame assemblies (i.e., three-in-one assemblies).
Technical Advantages
●High Lamination Consistency – Fully closed-loop pressure/temperature control; temperature variation across width ≤ ±1.5 ℃, pressure fluctuation ≤ ±1%, ensuring reliable sealing between membrane and frame and stable interfacial adhesion.
●Low‑Damage Process – Special anti-stick roller surface treatment + flexible pressure profile avoid excessive thermal shrinkage or perforation of the ion exchange membrane, preserving its electrochemical performance and mechanical strength.
●Wide Width Compatibility – Effective lamination width from 300 to 800 mm (customizable), adaptable to different membrane and frame sizes for various stack designs.
●High Production Efficiency – Continuous roll‑to‑roll or sheet‑to‑roll production speed up to 2–6 m/min, increasing efficiency by more than five times compared to intermittent single‑station processes.
●Intelligent Monitoring – Real‑time recording of temperature, pressure, and speed curves; automatic alarm for abnormal batches; supports one‑click recall of process recipes and full traceability.
Project Parameters
CUSTOMIZED PRODUCTS
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