After decades of development, ultrasonic technology has moved from military and medical applications to civilian use. At present, ultrasonic suture technology has been applied to sewing clothing. Ultrasonic suture equipment has simple structure and easy maintenance, simple operation and easy training of employees, low labor intensity, and high sewing speed, which is especially suitable for mass production of garments in factories. No sewing needle hole meets the requirements of watertight, airtight, anti-virus and anti-bacterial, and the sewing of various flower shapes can be realized by changing the flower wheel. From the initial use in special clothing such as surgical gowns, mountaineering suits, and diving suits, to the widespread use of ordinary clothing and footwear and hats industries, it caused a revolution in the clothing manufacturing process.

Recently, Altrasonic, a leading equipment manufacturer in the application of ultrasonic suture and welding technology, said that more than 30 manufacturers use ultrasonic suture equipment produced by it to improve production speed, product durability and cost-effectiveness. Conforms to the purpose of the NIJ standard.

According to Altrasonic, the equipment does not use knitting needles, threads or adhesives, but uses ultrasonic energy to create strong molecular bonds to form a strong seal without pinholes, adhesive gaps, and wear or disassembly. Sew.

Sealed seams mean better protection for the bulletproof materials (Spectra Shield and Kevlar) in the vest, ensuring that they will not lose their life-saving effects due to exposure to moisture. They also comply with the U.S. Department of Justice (NIJ) bulletproof standard under wet conditions (NIJ-0101.06), which requires body armor to be waterproof even after being submerged in water for 30 minutes.

Ultrasonic energy

From military personnel, emergency rescuers, law enforcement personnel and others who are exposed to more dangerous situations, reliable body armor is essential to protect their personal safety.

The ultrasonic energy is directly used in woven, non-woven or blended materials containing 40% natural fibers. The principle of ultrasonic suture is to use high-frequency vibration to bond two or more layers of thermoplastic polymer materials together, and the vibration energy is between the materials The rapid accumulation of heat energy causes the material to melt, and the material is firmly bonded together. The ultrasonic power, the duration of action and the pressure applied to the stitching of the material have an important influence on the stitch fastness.