Superfine fiber nonwoven material preparation technology has a broad market preheating prospect, which may bring new vitality to nonwovens

Fiber refining is an important development direction in the field of nonwoven materials. The existing fiber refining methods mainly include melt blown method, flash evaporation method, sea-island staple fiber web-forming method and split type (such as hollow orange petal type) two-component spunbond method. Among them, the two-component spunbond method has become the most promising ultrafine fiber nonwoven material preparation technology because of its efficient formation of high-strength, light and thin ultra-fine fiber webs. At present, the preparation of domestic two-component spunbonded superfine fiber nonwoven materials has production technology and equipment that cannot meet the requirements. The existing spunbond fixed net method is simple, resulting in a single structure and performance of nonwoven materials. In response to this problem, the project independently developed key technologies and equipment for two-component spunbond spunlace nonwovens, realized industrial applications, and developed a series of downstream products including microfiber leather, mainly including: Ru0026D of two-component spunlace The technology for preparing nonwoven materials of spunbond spunlace superfine fibers (up to 3~5μm in diameter) broke the technological monopoly of foreign countries in this field; realized the key equipment of two-component spunbond spunlace superfine fiber nonwovens Industrialization, four production lines have been established to fill the domestic gap; based on the above-mentioned technology and equipment, the original two-component spunbond filament online crimping and needle punching/spunlace structure control technology, and the development of a three-dimensional gradient structure controllable length Silk superfine fiber non-woven material has improved its application level; on this basis, the clean preparation technology and products of super fiber leather have been developed, and the full-process green industrial production of super fiber leather has been realized for the first time; a two-component spinning has been developed The application technology of spunlace nonwoven materials in high-grade wiping materials, warm and vapor-permeable materials, facial masks and flexible stab-resistant materials, and some products have been industrialized.