Nonwoven fabrics can be classified according to the different production processes as follows
1.hydroentanglement nonwoven: High-pressure micro-fine water jet to one or more layers of fiber network, so that the fibers are entangled together, so that the fiber network can be reinforced and have a certain strength.
2.Thermal nonwoven fabric: It means adding fibrous or powdered hot melt bonding reinforcing material to the fiber web, and then the fiber web is heated and melted and cooled to reinforce the cloth.
3.Pulp airflow into the network of non-woven fabrics: can also be called dust-free paper, dry paper non-woven. It is the use of airflow into the network technology to open the wood pulp fiber board into a single fiber state, and then use the airflow method to make fiber agglomeration in the formation of network curtain, fiber network and then reinforced into cloth.
4.Wet nonwoven fabric: It is to open the fiber raw materials placed in aqueous medium into single fiber, and at the same time make different fiber raw materials mixed to make fiber suspension pulp, the suspension pulp is transported to the web formation mechanism, and the fiber is formed into web in wet state and then reinforced into cloth.
5.Spunbond nonwoven fabric: After the polymer has been extruded and stretched to form continuous filament, the filament is laid into a network, and the fiber network is then bonded by itself, thermal bonding, chemical bonding or mechanical reinforcement methods, so that the fiber network becomes a nonwoven fabric.
6.Meltblown nonwoven: The process: polymer feeding --- melt extrusion --- fiber formation --- fiber cooling --- web formation --- reinforcement into cloth.
7.Needle-punched nonwoven fabric: It is a kind of dry nonwoven fabric. Needle-punched nonwoven fabric uses the piercing effect of needles to reinforce the fluffy fiber network into cloth.
8.Sewn nonwoven fabric: It is a kind of dry nonwoven fabric. The sewing method uses the warp knitting coil structure to reinforce the fiber web, yarn layer, nonwoven materials (such as plastic sheet, plastic thin metal foil, etc.) or their combination to make nonwoven fabric.
Uses of nonwovens
Its main uses can be broadly divided into.
(1) Medical and sanitary nonwoven fabrics: surgical gowns, protective clothing, disinfection wraps, masks, diapers, civil wipes, wiping cloths, wet face towels, magic towels, soft towel rolls, beauty products, sanitary napkins, sanitary pads and disposable sanitary cloths, etc.
(2) Non-woven fabrics for home decoration: wall coverings, tablecloths, bed sheets, bedspreads, etc.
(3) Nonwoven fabrics for garments: lining, adhesive lining, flocking, shaping cotton, various synthetic leather backing, etc.
(4) Nonwoven fabrics for industrial use: filter materials, insulation materials, cement bags, geotextiles, coverings, etc.
(5) Agricultural nonwoven fabrics: crop protection cloth, rice planting cloth, irrigation cloth, insulation curtain, etc.
(6) Other nonwoven fabrics: space cotton, thermal insulation materials, oil-absorbing felt, cigarette filters, bagged tea bags, etc.
Features of nonwoven fabrics
Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process, fast production speed, high yield, low cost, wide application, and many sources of raw materials.
