Test device: Ultrasonic sewing machine (35kHz 1000w)
Test material: TPU film(0.31mm)
Test application: Welding
The welding process is silky smooth, the welding surface is smooth, the welding strength is high, and the TPU material of this thickness is relatively easy to process with ultrasonic waves. Our ultrasonic sewing machine adopts ultrasoni rotary sealing system, which belongs to radial wave design. Compared with the traditional ultrasonic lace machine, the welding effect is better, and the air and water tightness is better.
Introduction to Ultrasonic Radial Wave Sewing Machine
1. Technical Principles
Rotary Welding System
- Comprising a 35kHz ultrasonic transducer, an amplitude rod, and a radial wave-emitting disc-shaped welding head. The transducer converts electrical energy into longitudinal mechanical vibrations, while the amplitude rod amplifies the amplitude and converts the longitudinal vibrations into radial expansion-contraction vibrations, enabling the disc welding head to achieve 360° radiating high-frequency vibrations.
- The ultrasonic generator converts mains power into high-frequency alternating current (35 kHz), controlling vibration frequency and displacement accuracy (micron level).
Sewing Process
- Fabric passes between the welding head and pressure roller. The localized high temperature generated by high-frequency vibration instantly melts and bonds thermoplastic materials, eliminating the need for needles and thread.
- Welding and cutting synchronization: Replacing the integrated welding roller enables simultaneous sewing and cutting of fabric, with automatic edge sealing and no burrs.
II. Core Advantages
Performance Breakthroughs
Needle-Free: Eliminates issues such as broken threads and needle holes, reducing auxiliary material costs;
High-Strength Sealing: Molecular-level fusion provides superior waterproofing/airtightness compared to traditional sewing, suitable for protective clothing, airbags, etc.;
Flexibility and Precision
Supports straight/curved sewing; replacing the pressure roller allows customization of weld width and embossing patterns;
Low Consumption and Environmental Protection
Compact size, no polluting chemical adhesives.
III. Application Areas
- Medical/Protective: Surgical sheets, protective clothing, filter bags, gas masks
- Apparel and Textiles: Seamless underwear, sportswear, curtains, swimwear (melted edges with embossing)
- Automotive Industry: Seat covers, roof linings, sunshades, airbags
- Industrial Filtration: MBR membrane modules, pleated filters, industrial filter cartridges
