Roll-to-Roll (R2R) Slot-Die Coating & Film Thickness Calculator
Calculate premetered wet film thickness ($h_{\text{wet}} = Q / (W \cdot U_w)$), volumetric pump flow rates, die lip gap tolerances, and coat-hanger shim geometry for battery slurries, OLEDs, and perovskite solar cells.
1. Input Parameters
2. Calculation Results
3. Geometric Visualizer
Tooling & Vector Prepress Engineering Notes
Slot-Die Premetered Coating Physics: Slot-die coating delivers 100% of pumped fluid onto the moving substrate with cross-web uniformity below ±1.5%. Wet film thickness is determined strictly by flow rate and web speed: $h_{\text{wet}} = \frac{Q}{W \cdot U_w}$.
Die Lip CAD Geometry & Shims: Die shim vector cutlines establish active coating width and feed distribution manifolds. Shim thickness must match lip gap ($H_{\text{gap}} = 1.5 - 3.0 \times h_{\text{wet}}$) to maintain a stable dynamic wetting meniscus bead without air entrainment or ribbing defects.