Nonwovens are used in a wide range of industries and permeate our lives. What is the nonwoven fabric? What is the relationship between nonwoven fabric and geotextile before?
Let’s dive right in now, and you can click on the question that interest you,
1 What is nonwoven?
Because it is a kind of fabric formed without spinning and weaving, only the textile short fibers or filaments are oriented or randomly braced to form a fiber network structure, and then reinforced by mechanical, thermal bonding, or chemical methods. Simply put: It is not made of one by one yarn interwoven, braided together, but the fiber directly through the physical method of bonding together, so when you get your clothes in the sticky weigh, you will find that it is impossible to draw a thread. Nonwoven 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.
2 Main applications of nonwovens
- Medical and health care fabrics: surgical gowns, protective clothing, disinfection wraps, masks, diapers, women’s sanitary napkins, etc.;
- Home decoration fabrics: wall coverings, tablecloths, bedsheets, bedspreads, etc.;
- The cloths used for the following: lining, bonded lining, wadding, shaping cotton, various synthetic leather base cloth, etc.;
- Industrial fabrics: filtration materials, insulation materials, cement packaging bags, geotextiles, coverings, etc.;
- Agricultural fabrics: crop protection cloth, rice planting cloth, irrigation cloth, heat preservation curtain, etc.;
- Others: space wool, heat, and sound insulation materials, oil-absorbing felt, cigarette filters, bags of tea bags, etc.
3 Classification of nonwoven fabrics
1) Hydroentangled Nonwoven
The hydroentanglement process is to spray a high-pressure micro-fine water jet onto one or more layers of fiber webs so that the fibers are entangled with each other and the web is reinforced with a certain strength.
2) Thermally bonded nonwoven
Thermally bonded nonwoven refers to the addition of fibrous or powdered hot melt bonding reinforcing material to the fiber web, which is then heated and melted and cooled to reinforce the cloth.
3) Pulp air flow nonwoven
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 fiberboard 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
Wet non-woven fabric is placed in the aqueous medium to open the fiber raw materials into a single fiber while making different fiber raw materials mixed to make fiber suspension pulp, suspension pulp transported to the web-forming mechanism, fiber in the wet state into the web, and then reinforced into cloth.
5) Spun bond Nonwoven
Spun bond nonwoven fabric is formed after the polymer has been extruded and stretched to form a continuous filament, the filament is laid into a network, and the fiber network then undergoes its own bonding, thermal bonding, chemical bonding, or mechanical reinforcement methods to make the fiber network into a nonwoven fabric.
6) Melt blown nonwoven
The process of melt blown nonwoven fabric: polymer feeding — melt extrusion — fiber formation — fiber cooling — web formation — reinforcement into cloth.
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