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Water Treatment Coating Line

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Water Treatment Coating Line is designed for the Reverse Osmosis (RO) membrane production by coating top layer onto the base film (polyamide layer), and meet the increase social needs for water treatments and environmental protection. This coating line is also feasible for Ultrafiltration (UF),Nanofiltrration (NF) membrane and gas separation membrane production. Main process of production as follows:
Unwinding → Dip-Coating (Liquid A) → Volatilization → Slot-Die Coating (Liquid B) → Drying → Neutralization → Washing → Protection→ Drying →Rewinding. Based on precise transmission system, electrical system and pneumatic structure.


Precise slot-die coating module supported by powerful gap control system with micron-level accuracy. Optional EDI or Mitsubishi slot-die coating head to level up the product quality.

Combination of air floatation and hot air dryer with high precison; Equipped with powerful air return system to achieve high energy utilization efficiency; Precise control of air flow and speed to ensure high efficiency and evenness for drying.

Automatic tension control system with high-precise roller, which prevent wrinkles and scratches of membrane during high speed production and contributes to excellent product quality. Tension diminishing is designed for rewinder to achieve flat and tidy rewinding.

PLC control system features for full production and quality control. Touch screen displays comprehensive operating parameters in real time and make the system easy to control, enabling the operator to have a synchronous monitor and control of all machine performance aspects. e.g. speed, tension control, online inspection, online help, alarm processing, production date backup, etc.

Customized quality for dryers and water tanks to meet client’s technological requirements

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Web Width: 800-1067mm
Max Machine Speed: 22m/min (Adjustable)
Coating Speed:0.5-20m/min (Coating speed depends on the base material, coating formula and the technology for membrane production)
Diameter of Membrane Roll Paper Core & Installation method: 3″ ;Air shaft tightens the core on filling air
Unwinder/Rewinder Diameter: ≤Φ800mm 
Heating Method For Dryers And Water Tanks: Options of thermal oil, steam, electricity, natural gas with optional energy saving system

Contact Us

Head Office Tel:0510-85312888       Sales Team:8615995275577 / +8613606171007          

Address:No. 8 Zhenfa 6 Road, Airport Industry Park, Xinwu District, Wuxi, Jiangsu, China


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