Jiayuanda's ultrasonic lace machine employs high-frequency vibrations (typically 20-35kHz) to generate thermal energy, which fuses multiple layers of material under pressure, achieving efficient, precise, and seamless bonding. This technology eliminates the need for traditional stitching or chemical adhesives, creating fully sealed seams that effectively block liquid and microbial penetration, meeting the high-protection requirements of surgical gowns. Key advantages include: high seam strength post-welding, capable of withstanding surgical stretching and friction; smooth, burr-free edges for enhanced wearer comfort; and the ability to simultaneously cut and seal complex shapes (such as cuffs and collars) in a single step, making it suitable for composite materials like PP non-woven fabric and PE film. Compared to conventional sewing, ultrasonic welding is significantly faster (0.5–2 seconds per weld) and requires no consumables (e.g., thread), reducing production costs and enabling automated large-scale manufacturing. Currently, this technology is widely used in critical areas of disposable surgical gowns (e.g., front plackets and cuffs) to ensure waterproof and antimicrobial performance, with adaptable mould designs accommodating varying specifications. However, it is essential to ensure the material contains thermoplastic components (e.g., polyester or polypropylene) and to optimise pressure, frequency, and other parameters to prevent over-melting or weak bonds. As medical protection standards advance, ultrasonic welding is emerging as a mainstream surgical gown manufacturing process due to its eco-friendly and high-efficiency attributes.