Products Description
This advanced single-side slot die coating machine is specifically designed for high-precision coating applications in lithium-ion battery production, handling both cathode and anode electrode materials. The system comprises six integrated components: an unwinding unit, precision coating head, drying oven, traction mechanism, winding unit, and advanced electrical control system. The machine precisely applies uniformly mixed slurry onto the substrate, maintaining strict control over critical parameters such as coating dimensions and weight within specified process tolerances. Following the coating process, the material undergoes controlled drying before being wound for subsequent manufacturing processes, ensuring optimal preparation for the next production stage.
Technical Parameters
Base material parameters
| Item | Cathode | Anode |
| Base material | Al foil | Cu foil |
| Width(mm) | 180～320 | 180-320 |
| Thickness(µm) | 8～15 | 6～12 |
| Remark：The base material used for acceptance should not have any looseness, uneven thickness and weight, surface oil stains or other phenomena that affect the performance of the tape and coating. | ||
Slurry parameters
| Item | Cathode | Anode |
| Material | LFP, NMC ,etc | Graphite |
| Solvent | NMP | DI-Water |
| Solids（wt%） | 52～65(LFP)60~76(NMC) | 42～50 |
| Specific gravity of slurry（g/cm3） | 1.5～2.5 | 1.0～2.0 |
| Viscosity（mPa.s） | 3500～12000 | 2500～8000 |
| Note:1) Solid content of the same batch: fluctuation ≤±0.5%;2) The same batch of slurry viscosity: fluctuation ≤±500mPa.s, 22-30 range of arbitrary temperature fluctuation ±2℃;At the time of acceptance, positive slurry: one; Negative slurry: one; | ||
Coating parameters
| Item | Cathode | Anode |
| Coating mode | Continuous, Intermittent,Stripe coating | Continuous, Intermittent,Stripe coating |
| Coating width(mm) | Max 300 | Max 300 |
| Dry thickness of single-sided coating（µm） | 70～350 | 60～350 |
| Single coating weight(g/㎡) | 30～250 | 20～200 |
| Coating speed(m/min) | 0.1-0.5 | 0.1-0.5 |
| Explanation: The coating speed is related to product characteristics (material system, coating thickness, solid content, temperature), and the maximum coating speed given in the table cannot meet special coating process requirements; | ||
Equipment specifications and parameters
| No | Item | Content |
| 1. | Roll surface width | 400mm |
| 2. | Mechanical speed (unloaded) | Max.3m/min |
| 3. | Unwinding specifications | Roll diameter: Max φ 300mm；Load bearing: Max.100kg;Roll specification: inner diameter of 3 inches, approximately 76.2mm, length of 400 ± 3mmRoll material: metal, ABS plastic |
| 4. | Winding specifications | Roll diameter: Max φ 300mm；Load bearing: Max.100kg;Roll specification: inner diameter of 3 inches, approximately 76.2mm, length of 400 ± 3mmRoll material: metal, ABS plastic |
| 5. | Oven heating method | Electrical heating |
| 6. | Oven structure | 1 section×1.2m/section=1.2m，single layer； |
| 7. | Oven temperature | Max.140℃ |
Main components of the equipment：
| Name | QTY | Remark |
| Unwinding unit | 1set | Single station, automatic unwinding, manual roll changing; |
| Coating unit | 1set | |
| Coating feeding unit | 1set | Including mixing drum, pump, filter, valve, etc |
| Oven unit | 1set | Single layer，1 section×1.2m=1.2m； |
| Traction unit | 1set | |
| Winding unit | 1set | Single station, automatic unwinding, manual roll changing; |
| Controller | 1set |
