The principle of hydroentanglement is similar to that of needling process, but instead of using needles, the fiber web is sprayed by multi-strand micro water jet generated by high pressure.  After the water jet passes through the web, the entrusted net curtain bounces back and penetrates the web again. thus, the fibers in the web are displaced, interpenetrated, entangled, and clasped under the hydraulic action of the high-speed water jet penetrating in different directions, thus strengthening the web.

水刺无纺布加工的原理