Pull-on pant with air channel and forming process of accordion waist
By using a ring-shaped ultrasonic welding point structure and a synchronous welding hole forming process, the problem of poor breathability of the pull-up trousers' accordion waistband has been solved, achieving a highly breathable and strongly fixed waistband, improving wearing comfort and simplifying the production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing pull-up trousers have poor breathability due to their accordion waistbands, which leads to the accumulation of moisture and heat in the waist area, affecting wearing comfort. Furthermore, the traditional perforation process increases the complexity and cost of the process and may damage the structural integrity of the weld points.
The structure adopts a ring-shaped ultrasonic welding point, and the upper and lower non-woven fabrics and elastic bands are fixed by hot melt adhesive. A ventilation hole is retained in the center. Welding and hole formation are achieved simultaneously using 28KHz high-frequency ultrasonic equipment and a hollowed-out ring embossing roller in the middle, avoiding the need for additional drilling process.
Without sacrificing fixed strength, it achieves directional and efficient breathability in the waist area, reduces the risk of skin irritation, improves wearing comfort, and simplifies the production process, ensuring the consistency and reliability of the product's breathability and adhesive strength.
Smart Images
Figure CN122398544A_ABST