Non-woven fabrics are a new type of material between traditional textile fabrics, plastics and paper from the entire product system. The fundamental difference between a nonwoven fabric and a traditional textile fabric is that it is not formed by intertwining yarns into bundles and yarns, but is composed of monofilament fibers in a directional or random arrangement, and therefore, it is more than woven fabrics and knitted fabrics. Can better reflect the characteristics of the fiber itself. Almost all kinds of non-woven fabrics are characterized by a single-fiber web. In the web forming stage, the formed webs basically all show a three-dimensional network structure, or three-dimensional structure. However, due to the different consolidation methods, the manufactured products will exhibit different geometric shapes. The self-adhesive products such as acupuncture, hot melt method, spray sticking method, spunlace method and meltblown method all have typical three-dimensional shapes. Geometrical structural features, while products that have been subjected to padding or hot rolling with a thin web as the matrix, are subjected to heat and pressure, and most of the fibers in the fiber have been laid out in a plane, so they are embodied as a planar network, or Call two-dimensional structure.
The structural characteristics of the nonwoven fabric determine its unique properties, such as small and tortuous pores, large porosity, strong diagonal deformation resistance, high elongation, good coverage and shielding, fluffy structure, soft to the touch , good flexibility and so on. These characteristics make non-woven fabrics perform much more than traditional fabrics in many specific applications.
The flexible production process of nonwoven fabrics determines the variety of appearance, structure, properties and applications. Thin products are only a dozen grams per square meter, while thick products are thousands of grams per square meter; soft like silk, hard like wood; fluffy cotton-like, tight like felt. These products can be achieved by changing the fiber raw materials, processing technology and other post-processing technologies to meet the requirements of the use performance, which is difficult for traditional textile fabrics to achieve.
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