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High-Precision Intermittent Scraper Coating Line for Lithium-Ion Battery – Customizable Scraping Zone Accuracy & Multi-Zone Drying
This customizable knife coating production line is a continuous or intermittent coating system that uses a precisely controlled doctor blade to apply uniform layers of liquid coatings onto flexible or rigid substrates. Available in roll-to-roll continuous production, laboratory R&D, and high-precision intermittent configurations.
The system is fully customizable in coating width, drying length, coating method (comma blade / doctor blade / rod coating), and automation level. The coating thickness is controlled by the precise gap between the blade and the substrate or backing roll, enabling wet film thicknesses from 5 µm to several hundred microns with exceptional uniformity (up to ±1-2 µm accuracy).
Working principle: The coating material is supplied to the substrate surface, and the doctor blade (comma blade or scraper) meters the excess coating to leave a precisely controlled wet film thickness. The coated substrate then passes through drying ovens where solvents are evaporated or resins are cured. This method is widely used in lithium-ion battery electrode manufacturing, adhesive tape production, and functional film coating.
Technical Parameters
Parameter
Roll-to-Roll Production Model
Laboratory R&D Model
High-Precision Intermittent Model
Substrate width (customizable)
200 - 1600 mm
Up to 300 mm
80 - 250 mm
Coating width (customizable)
150 - 1600 mm
Up to 200 mm
50 - 220 mm
Substrate types
PET, PI, paper, non-woven, Al/Cu foil, steel pipe
Glass plates, PET film, wafer, membrane
Al/Cu foil for Li-ion battery
Coating method (customizable)
Comma blade / Slot die / Multi-roll
Doctor blade / Wire-wound rod
Intermittent scraper / Transfer coating
Wet coating thickness range
10 - 500 µm
5 - 100 µm
10 - 300 µm
Coating uniformity
±2%
±0.5 - 1%
±1.5% (刮区精度 ±0.5mm)
Mechanical speed (customizable)
0.5 - 80 m/min
0.01 - 0.5 m/min
0.1 - 1.0 m/min
Drying temperature (customizable)
Up to 200°C
Up to 160°C
Up to 150°C
Drying method (customizable)
Hot air / IR / UV / Gas heating
Hot air / IR heating
Hot air / IR heating (NMP recovery optional)
Oven sections (customizable)
2 - 6 sections
1 section
1 - 3 sections
Tension control
Closed-loop load cells
Manual / Open-loop
Closed-loop
Control system
PLC + HMI touchscreen
Digital controller / PLC
PLC + HMI
Power supply
380V, 50/60Hz, 3-phase
110/220V, 50/60Hz
220V, 50Hz
Typical application
PSA tape, battery anode/cathode, optical film
R&D sample making, sol-gel coating
Li-ion battery electrode intermittent coating
Applications
Battery industry: Lithium-ion battery electrode (anode/cathode) continuous and intermittent coating
Data logging: Recipe storage, real-time monitoring, USB/Ethernet export (optional)
Versatile substrate handling: Rolls, sheets, rigid plates, and even pipes
Support and Services
Free process consulting and material testing - send us your slurry/substrate for trial coating
Custom layout design for your production floor
On-site installation and commissioning (customizable support packages)
Operator training program included
Remote troubleshooting via video call or IoT monitoring
12-24 month warranty on mechanical components (wear parts excluded)
Spare parts availability from regional warehouses
Preventive maintenance service contracts available
Lifetime technical support via phone, email, or chat
Packing and Shipping
Packing:
Anti-rust film + reinforced plywood case for main body and control cabinet
Foam padding for fragile components (blades, sensors, control panel)
Stretch wrap for exposed metal surfaces
Desiccant bags for electrical parts
Lead time:
Standard models: 15-25 days after order confirmation
Custom configurations: 30-50 days (depending on complexity)
Large industrial lines: 60-90 days
Shipping: FOB Shanghai / CIF by sea, air, or rail
Customizable: Export crating, custom labeling, destination port documentation
Frequently Asked Questions
Q1: What is the difference between a comma coater and a doctor blade coater?
A: A comma coater uses a reverse-rotating comma-shaped blade against a backing roll, providing more precise and uniform coating for medium-to-high viscosity materials. A doctor blade coater uses a stationary blade directly against the substrate or roll, simpler in design and suitable for lower viscosity coatings. Both methods are customizable based on your material viscosity and accuracy requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
2000000-3000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
