From November 10 to November 11, 1800mm-sms exported to foreign countries was delivered.
Affected by the epidemic situation, one of the important raw materials of mask "non-woven fabric" suddenly became in short supply.
1. What is non-woven fabric?
Non woven fabric, also known as non-woven fabric, is composed of directional or random fibers. It is called cloth because of its appearance and some properties.
Non woven fabrics are made of chemical fibers and plant fibers on a wet or dry papermaking machine under the condition of water or air as the suspension medium. For example, polypropylene (PP material) granules are usually used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying and hot rolling.
2. What are the characteristics of non-woven fabrics?
Non woven fabrics are moisture-proof, breathable, flexible, light weight, non combustion, easy to decompose, non-toxic and non irritating, rich in color, low price and recyclable.
3. What are the uses of non-woven fabrics?
Its main uses can be roughly divided into: (1) medical and health cloth: operating clothes, protective clothing, disinfection bags, masks, diapers, women's sanitary napkins, etc; (2) Household decorative cloth: wall cloth, tablecloth, bed sheet, bedspread, etc.; (3) follow up cloth: lining, adhesive lining, wadding, set cotton, various synthetic leather backing cloth, etc.; (4) industrial cloth: filtering material, insulating material, cement packing bag, geotextile, covering cloth, etc.; (5) agricultural cloth: crop protection cloth, seedling raising cloth, irrigation cloth, heat preservation curtain, etc.; (6) Others: Space cotton, thermal insulation and sound insulation materials, oil felt, smoke filter, bag tea bag, etc.
SMS = spunbonded nonwovens + melt blown nonwovens + spunbonded nonwovens, which are hot rolled from three-layer web.
Features and uses:
15-30gsm products, because of its waterproof and air permeability, are particularly suitable for sanitary market, such as sanitary napkins, sanitary pads, baby diapers, adult incontinence diapers, etc. At the same time, with the development of the market, low gram weight products are also widely used in the packaging of footwear products.
40-60gsm products are suitable for use in medical field, such as making surgical clothes, surgical bags, surgical covers, sterilization bandages, wound stickers, plaster stickers, etc., and also suitable for making work clothes and protective clothing in industry. SMS products have been widely used in the world because of their good isolation performance, especially the SMS products treated with three anti-static and anti-static treatment, which are more suitable for high-quality medical protection materials.
65-80gsm product is a high-efficiency filter material and a special material for inner packing of carbon powder; at the same time, it is also an excellent oil absorption material, which is used in industrial wastewater degreasing, marine oil pollution cleaning and industrial dishcloth, etc.
Spunbonded nonwovens
Spunbonded non-woven fabric is a kind of non-woven fabric, which is made by self-adhesive, thermal bonding, chemical bonding or mechanical reinforcement after the polymer has been extruded and stretched to form continuous filament.
characteristic:
The web consists of continuous filaments; excellent tensile strength. There are many changes in technology, so many methods can be used to reinforce. The results show that the filament size range is wide, the handle is poor, and the evenness of fiber web is poor.
Product application:
Polypropylene (PP): geotextile, tufted carpet base cloth, coating base cloth, medical and health materials, coating materials of disposable products, etc.
Polyester (PET): filter material, lining material, tufted carpet base cloth, agricultural material, packaging material, etc.
Melt blown nonwoven fabric
Melt blown non-woven fabric process: polymer feeding - melt extrusion - fiber formation - fiber cooling - Netting - reinforcement into cloth.
characteristic:
The results show that the fiber mesh has good uniformity, soft handle, good filtration performance and liquid absorption performance, and poor mesh strength.
Product application: filter materials, medical and health materials, clothing materials, battery diaphragm materials, wiping materials.
