Nonwovens definition and classification
Non-woven fabrics were once known as non-woven fabrics, non-woven fabrics, and non-woven fabrics in China. In 1984, the Ministry of Textile Industry was named "non-woven fabrics" according to product features. Unlike woven fabrics and knitted fabrics that require yarns to be made by weaving or knitting, nonwovens use high polymer chips, fibers, and filaments directly through the use of yarns or yarns. The web forming method and processing technology—such as application of chemical adhesive bonding, acupuncture, spunlace, hot rolling, slitting, printing, hot air blow-bake and other processes, are new fiber products. Non-woven fabrics have broken through the traditional textile principles (by fibers → yarns → fabrics), making full use of the basic theories of modern physics, chemistry, mechanics, and bionics, combined with textile, chemical, plastic, papermaking, and other industrial technologies to become textiles. The youngest and most promising new industry in the industry. According to the national standard (GB/T 5709-1997), non-woven fabrics are defined as "oriented or randomly arranged fibers, sheets, webs or batt made by combining friction, cohesion, adhesion or a combination of these methods. Sheets (not including paper, woven fabrics, knitted fabrics, tufted fabrics, stitched fabrics with seams and yarns, and wet felted felt products). The fibers used may be natural fibers or chemical fibers; they may be staple fibers, filaments or in situ formed fibers. In order to distinguish between wet-laid nonwovens and paper, fibers with an aspect ratio greater than 300 in their fiber constituents account for more than 50% of the total mass, or fibers with an aspect ratio greater than 300 account for only 30% or more of the total mass. However, its density is less than 0.4g/cm3 belongs to non-woven fabric, and vice versa is paper. Second, the classification of non-woven fabrics According to different classification criteria, non-woven fabrics can have different classification methods. 1, according to the use of time points can be divided into two types of durable and disposable. 2, according to product use points (1) Medical cloths: surgical gowns, protective clothing, sterile cloths, masks, diapers, sanitary napkins, etc. (2) Home decoration fabrics: wall coverings, tablecloths, bed sheets, bedspreads, etc. (3) Cloths for clothing: linings, adhesive linings, battings, styling cotton, and synthetic leather base fabrics. (4) Industrial fabrics: filter materials, insulating materials, cement bags, geotextiles, and covered cloths. (5) Agricultural cloth: crop protection cloth, breeding cloth, irrigation cloth, insulation curtain, etc. (6) Others: Space cotton, insulation and sound insulation materials, oil-absorbing felt, smoke filter, tea bags, etc. 3, according to fiber-forming methods combined with fiber network consolidation methods can be divided into dry-laid, wet-laid and polymer extrusion into three categories. This fabric is knitted by 100% Cotton yarn. Knitted fabrics have the characteristics of soft texture, moisture absorption, air permeability, sweating and warmth retention, and most of them have excellent elasticity and extensibility. Compared with shuttle fabrics, it has the characteristics of high output and suitable for small batch production. Knitted clothes are comfortable to wear, close to the body, free of restraint, and can fully reflect the human body curve. Cotton Knit Fabric,Camouflage Fabric For T-Shirt,Cotton Kniting Printed Fabric,Cotton Knitting Fabric Zhejiang Xinjian Textile Inc.Ltd , https://www.zjxjtex.com
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