Ultrasonic & Technical Textiles

Ultrasonic Fabric Slitting & Edge Sealing Calculator

Determine acoustic energy density ($E_{\text{linear}}$ in J/mm), rotary cutting anvil bevel geometry, melt bead width, and pneumatic clamping force for fray-free slitting of cleanroom wipes, geotextiles, and medical garments.

1. Input Parameters

Acoustic Frequency (f in kHz):

Oscillating sonotrode frequency. Higher frequency enables cleaner micro-edge sealing.

Acoustic Generator Power (P in Watts):

Continuous ultrasonic vibrational power delivered to the acoustic horn.

Web Slitting Speed (v in m/min):

Continuous fabric transport speed across the rotary cutting anvil.

Rotary Anvil Bevel Angle (θ in degrees):

Included cutting wedge angle of the hardened carbide rotary anvil.

Fabric Basis Weight (W in g/m²):

Synthetic textile or non-woven weight per square meter.

Material Thickness (t in mm):

Compressed web thickness entering the sonotrode cutting nip.

2. Calculation Results

Linear Energy Density

1.37 J/mm

Sealed Edge Bead Width

0.29 mm

Max Recommended Speed

48.0 m/min

Nip Clamping Force

185 N

3. Geometric Visualizer

Tooling & Vector Prepress Engineering Notes

Ultrasonic Fabric Slitting & Sealing Physics: When synthetic fabrics (polyester, nylon, polypropylene, aramid blends) traverse the vibrating sonotrode and rotary anvil, localized intermolecular friction instantly melts polymer fiber ends, fusing them into a solid bead while shearing the web with zero fraying. Governed by:

E_linear = (Power × η_acoustic) / (Web Speed / 60) [J/mm]
Bead Width ≈ 2 × t × tan(θ / 4) + k_thermal × √(E_linear) [mm]

Vector Tooling Guidelines: Rotary anvil wheels require precise CAD profiles with 0.05 mm radius cutting lands. For automated CNC cutting heads, vector toolpaths must incorporate tangent lead-in arcs and deceleration curves to prevent localized polymer burn-through at sharp directional changes.