TPU film surgical robot protective sleeve heat sealing machine

Key Technical Specifications for TPU Film Surgical Robot Protective Cover Welding Machines

Core Equipment: High-Frequency (HF) Welding Machines

Protective covers for surgical robots (e.g., da Vinci systems) are welded using HF welders (e.g., Shanghai Puxiong D04C model), which utilize high-frequency electromagnetic waves to achieve rapid, uniform TPU fusion. Key advantages include:

• Rapid Welding: Melts TPU in 1–3 seconds, reducing cycle time by 40% versus thermal sealing.
• Superior Sealing: Leakproof seams meet ISO 11607-1 standards (no leakage under 0.3MPa pressure).
• Material Versatility: Compatible with medical-grade TPU (≤0.5mm), PE, and PVC films.
• Automation: PLC-controlled parameters (±1% temperature accuracy, 0.02MPa pressure control).
• Eco-Friendly: Energy consumption ≤5kW/h, zero harmful emissions.

Critical Process Workflow

1. Material Preparation

• Use ISO 10993-compliant TPU films with:
  • Tensile strength ≥30MPa
  • Tear resistance ≥80kN/m (ASTM D624)
• Pre-process: Clean with medical-grade IPA, dry at 40°C, and laser-cut to ±0.2mm tolerance.

2. Mold Design & Alignment

• Customize molds for robot-specific contours (e.g., da Vinci instrument arms) via 5-axis CNC machining (±0.05mm precision).
• Position with machine vision alignment (≤0.1mm repeatability).

3. HF Welding Parameters

• Temperature: 180–220°C (adjust per TPU thickness, ±2°C stability).
• Pressure: 0.5–1.2MPa (pneumatic control to eliminate air pockets).
• Time: 0.5–3 seconds (optimize via DSC melt curve analysis).

4. Cooling & Curing

• Forced-air cooling: 10–20°C/s rate to retain seam integrity.
• Post-cooling dimensional tolerance: ±0.15mm.

5. Quality Inspection

• Visual: 100% inspection under 10x magnification (no wrinkles/burns).
• Leak Test: Submerge in 0.9% saline solution at 0.3MPa for 5min (FDA GMP compliant).
• Tensile Test: ≥15MPa weld strength (ISO 527-3).

Case Studies

Shanghai Puxiong D04C Welder

• 8kW system with 10-session parameter memory.
• Produces 300–500 protective covers/hour for:
  • da Vinci surgical arms
  • Endoscope sheaths (0.3mm TPU, Ra ≤0.4μm surface finish).

Covestro Platilon® TPU Film

• 300% elongation with <35dB friction noise.
• Enables seamless welding for:
  • Sterile instrument covers
  • Transparent vision ports (≥92% light transmission).

Selection Guidelines

Capacity Needs

• Prototyping: Single-station manual welders (≤50 pieces/day).
• Mass Production: 4-station rotary systems (≥2,000 pieces/day).

Certifications

• Mandatory: ISO 13485, CE Mark.
• Preferred: FDA 510(k)-listed equipment.

Supplier Criteria

• Custom Tooling: Mold design support with ≤3-day lead time.
• Post-Sales: Onsite training, ≤24hr remote troubleshooting.

This HF welding solution ensures surgical robot protective covers meet stringent biocompatibility, precision, and sterility requirements for minimally invasive procedures.