Introduction To Relevant Basic Knowledge Of Non-Woven Fabrics

　　 Non-woven fabric It refers to the cloth made by winding the fibers together with many pricked needles or sticking some of them together without knitting. People have invented the manufacturing principle of non-woven fabrics at the beginning of the 20th century. Now the use, materials and manufacturing methods of non-woven fabrics have increased and become an integral part of our life. The secret is that flexibility, thickness, various properties and shapes can be freely created according to different raw materials and processing methods. Non woven fabrics have many advantages: 1) breathability, 2) filterability, 3) thermal insulation, 4) water absorption, 5) water resistance, 6) scalability, 7) untidy, 8) good feel and softness, 9) lightness, 10) elasticity and recoverability, 11) directionality without fabric, 12) high productivity and fast production speed compared with textile fabrics, 13) low price, mass production, etc.

Disadvantages: poor strength and durability compared with textile fabrics; 2) inability to clean like other fabrics; 3) fibers are arranged in a certain direction, so they are easy to split from a right angle, etc. Therefore, the recent improvement of production methods mainly focuses on the improvement of prevention of splitting. The manufacturing methods can be roughly divided into wet method with water (7% in Japan and 1-2% in the world) and dry method without water (93% in Japan and 98-99% in the world). Other methods include hot air or hot press fixation (hot bonding, wire bonding, etc.) and adhesive application (chemical bonding), etc.

　　 dress material /Lining materials refer to interlining, adhesive lining, padding cotton, shoulder pads, bra pads, propaganda work clothes, travel underwear, badges, handbags, slippers, hats, etc. Industrial use refers to abrasives, oil absorbents, paper felts, heat insulation materials, sound insulation materials, shockproof agents, electrical insulation materials for printing bases, electromagnetic wave shielding materials, battery separators, adhesive tapes, disk packaging materials, V-belts, ceilings and various filters. Civil/architectural/agricultural use refers to pipe materials, wall decoration materials, sound insulation and shockproof materials, roof materials, anti condensation plates, anti-corrosion materials, intensifiers, plastic simple greenhouse plates, seedbed plates, frost prevention plates, shading plates, gardening flower pots, etc. Household use refers to felt cloth, carpets, cushion materials, padding cotton for reception chairs, wallpaper, quilt padding cotton, quilt bags, pillow cases, quilts, collection bags, package skins, tea bags, calendars, book covers, tablecloths, lunch mats, etc. Medical and sanitary use refers to surgical clothing, covering cloth, hat, mask, bed sheet, antibacterial pad, paper diaper, sanitary towel, hemostatic plug and other physiological articles, gauze, cotton swab, towel handle, mask, etc.

At present, about 10-20 Japanese manufacturers have entered Asia, the United States and other countries to establish overseas factories or merge local manufacturers. There are various sales channels for non-woven fabrics. Generally speaking, if it is diapers, it is material manufacturer → diaper manufacturer → mass merchandiser shop · pharmacy. In the case of auto supplies, it refers to the material manufacturer → auto supplies manufacturer → shop → auto manufacturer. Efforts on environmental issues began very early. Air conditioning, dust collection pipe and drainage filter pipe are put into practice. The non-woven fabric made from the fibers of plastic bottles can be used for the interior decoration of cars. Use ecological raw materials that can be naturally decomposed in soil. It can produce non combustible non-woven fabrics without halogen. The recycling of agricultural and automobile seats has been developed.

The biggest problem now is how to deal with disposable products such as diapers. The globalization process of general non-woven fabrics is advancing constantly, and the world competition is fierce. Not only did the imports of cloth from China and other countries increase, but also the imports of processed goods increased. The number of equipment transferred overseas by Japanese manufacturers increased. Abandonment, business merger, and increase in association. However, there are also good aspects. The ultimate goal of the world's non-woven fabric industry is that non-woven fabrics can be used for cleaning Outerwear After continuous research, it is possible to achieve this. Now Europe and the United States have begun to have experimental products on display in societies or exhibitions.