Ultrasonic technology can be used in the manufacture of seamless underwe

Ultrasonic technology can be used in the manufacture of seamless underwear

2025-09-02

In the production of seamless underwear, ultrasonic technology uses high-frequency vibration energy to precisely weld and cut materials, replacing traditional sewing processes. Its core applications include:

Edge cutting and fusing: Ultrasonic pattern wheels are used to seamlessly cut and fuse the edges of underwear, resulting in smooth, soft edges that resist ripping and tearing, while also preserving the elastic properties of the material.

Embossing and perforation: Specialized pattern wheels are used to emboss a variety of patterns, perforations, or lace, allowing for free design to enhance the aesthetics of the underwear while maintaining the integrity of the fabric.

Seamless stitching: Ultrasonic bonding replaces needle and thread, directly fusing components such as cups and straps. This eliminates thread friction, achieves a 360° seamless fit, and enhances wearer comfort.

Efficiency and environmental advantages: No preheating is required, enabling continuous and efficient processing (e.g., 8 hours of continuous operation). The process is smoke-free and does not burn materials, meeting environmental and health requirements.

This technology operates at a safe 20kHz frequency, ensuring no stiffening of the fabric or skin irritation, making it a core process in seamless underwear production.