High-frequency equipment can break non-woven fabric physiotherapy products

 

Nonwoven Physiotherapy Products Fabricated by High-Frequency Cutting Technology

1. Nonwoven Therapy Patches
High-frequency (HF) equipment enables synchronous welding and cutting of nonwoven composites (nonwoven layers + gel/drug layers) through high-frequency electromagnetic fields under mold pressure (typical mold pressure: 10-50 kN). This ensures edge sealing integrity with a peeling strength of 10-20N/15mm, effectively preventing drug leakage while maintaining medical-grade hygienic standards. Applications include cold/hot therapy gel patches requiring <0.1 mm edge tolerance. The dual-function process achieves 3-5x higher production efficiency compared to separate sealing/cutting methods.

2. Nonwoven Pressure Bandages
For elastic support products (sports braces, post-surgical compression bands), HF systems weld nonwoven fabrics to elastic fibers (PET/PU) while die-cutting in 0.5-2s cycles. Adjustable parameters:

• Pressure: 0.5-2 MPa (prevents fiber fraying)
• Power density: 0.3-1.5 W/mm&sup2; (optimizes melt depth)
  Edge smoothness meets EN 13795 standards with Rz ≤30 μm surface roughness, eliminating edge hardening issues from mechanical cutting.

3. Nonwoven Therapy Pads
Multi-layer structures (nonwoven + hydrogel + waterproof TPU film) are processed via 5-15kW HF generators with ±2% power stability. Key parameters:

• Cycle time: 1-3s per unit
• Temperature uniformity: ±5°C across welding zones (critical for gel viscosity consistency)
  The coaxial resonator design achieves 85-92% energy efficiency, reducing thermal distortion in 0.5-3mm thick composites.

4. Nonwoven Breathable Dressings
HF cutting/welding enables:

• Precise control of melt interface (160-220°C, controlled within ±3°C)
• Burr-free edges complying with ISO 10993-10 friability tests
• Sterility assurance with microbial barrier performance <0.01 CFU/cm&sup2;
  Typical parameters: 0.3-1MPa pressure, 40.68MHz frequency (enhanced for porous material penetration).

Technical Superiority

1. Dual Processing Efficiency: Synchronous welding/cutting reduces unit process time by 60-70% (3-10s/unit vs. 15-30s in conventional methods).
2. Material Versatility: Processes 0.5-10mm thick nonwovens including PVA/PU/PLA with <0.1mm dimensional tolerance.
3. Advanced Safety Systems:
   • Spark gap monitoring (5557PL protection system with ≤5ms response)
   • 4-stage overload protection (current/voltage/temperature/power)
4. Eco-Friendly Operation: Eliminates adhesive usage (VOC reduction >95%), compliant with REACH/ROHS standards.

This technology achieves >98% weld seam consistency (ASTM D882 tested) while reducing energy consumption by 30-40% compared to ultrasonic methods, making it the optimal solution for medical-grade nonwoven product manufacturing.