High-frequency welding technology for the connection of composite film materials in vaccine bags

Inside the cleanroom of a biopharmaceutical company in the Yangtze River Delta, a Puxiong 10kW high-frequency welding machine is precisely fusing five layers of composite film into vaccine packaging bags at a welding speed of 12 meters per minute. This technology, once reliant on imports, now achieves real-time matching of welding energy and material molecular structure through Puxiong's independently developed dynamic frequency tracking system. This results in a 40% increase in welding strength compared to traditional hot-pressing processes, and the sealing performance has passed ISO 11607 medical packaging standard certification.

"The core of high-frequency welding lies in the precise control of polar molecules," explained Puxiong's technical director, pointing to the electromagnetic field distribution diagram on the equipment. For composite film materials such as PVC, TPU, and EVA, Puxiong uses the internationally recognized 27.12MHz frequency band and intelligently adjusts the capacitor matrix to control temperature fluctuations in the welding area within ±2℃.

Puxiong's innovation extends beyond parameter control. Its patented bipolar plate welding module, through optimized electric field distribution, increases welding efficiency by three times. In underground utility tunnel projects, this technology enables the welding of 3,000 square meters of HDPE waterproof membrane per day, with a weld leakage rate of less than 0.001%. Even more remarkable is that the electric welding technology developed by Puxiong has been applied to medical, military and other systems.