Nonwoven Fabrics Must Be Developed In Many Fields To Make Great Achievements.

Nonwovens have been widely used in non durable clothing, such as Spunlaced medical protective clothing, PP disposable spunbonded protective clothing and SMS medical protective clothing.

At present, the development of new products in this field includes two aspects: first, the new expansion of the existing materials in the field of clothing application; and the two is the development of new nonwovens fabrics.

Non durable

SMS nonwoven fabric is a composite product of spunbonded and melt blown. It has the advantages of high strength, good filtration performance, no adhesives and no toxicity. It has played an important role in the field of medical and industrial filtration materials. Its latest application is to use SMS to ventilate, produce no fiber dust, and block particles exchange between human body and the outside world. It is used in pharmaceutical, bioengineering, optoelectronic processing, electrical components and chips and other highly clean production environments.

Spunbonded nonwovens are made of high strength continuous filament and occupy a large proportion in the disposable protective clothing market.

In the production process of spunbonded nonwovens, special additives or finishing can be added to make the products have the functions of flame retardancy, antistatic, radiation protection, hydrophobic and moisture conducting, antibacterial and thermal insulation.

In the development of new fibers, water-soluble nonwovens are a kind of new type of nonwovens.

A new type of cotton fiber composite nonwovens has been developed in the United States. The surface layer is thermally bonded fabric of cotton and polypropylene fiber. It consists of two or three layers of composite material with spunbonded fabric. The handle of the product is similar to that of pure cotton knitted fabric. It has good strength and elongation, water absorption and water retention, fast suction speed and little pilling performance.

After finishing, the instantaneous elastic recovery rate of the material reaches 50% to 83% to 93% when it is stretched. It is suitable for making medical isolation clothing and disposable underwear.

In addition, the new generation of biochemical protective clothing developed by the US military makes full use of the advantages of three kinds of fabrics woven, knitted and nonwoven. The outer layer of the protective clothing is tearing nylon / cotton fiber poplin. After water repellent treatment, the lining is made of non-woven fabric with activated carbon, and the most inside layer is tricot warp knitted fabric.

Compared with the existing protective clothing, the clothing provides special chemical protection for soldiers, and at the same time, it also increases the lightness of clothing and reduces the cost, which can withstand at least 3 times of washing.

Durable

Due to the drapability, elasticity, strength and elongation, opaque and pilling properties of nonwovens, there is a gap between them and the lack of artistic sense in appearance. Therefore, it is quite difficult to apply in the field of durable clothing.

Nonwovens, however, have the characteristics of not easily dispersing and slipping, which can directly involve selvage design and do not need to ironing and locking the edges of garments, which is different from woven fabrics and knitted fabrics.

It is optimistic about the advantages of sewing technology of nonwovens garments, and many researchers and enterprises are actively engaged in their product development.

In recent years, the research in this field focuses on how to improve the drapability, abrasion resistance, resilience and resilience of nonwovens, making it suitable for the requirements of durable fabric.

The joint venture of BBAFiberweb and DowChemical has developed a new type of spunbond elastic nonwovens, which is made of two kinds of core fibers. The core layer is an elastic body. The cortex is a polymer with excellent elongation. By adjusting the different proportions of the two components of the core, the spunbonded fabric has good elasticity, low elastic modulus, and high strength and dimensional stability. It provides the possibility for making durable clothing.

Japan cola and domestic enterprises are jointly developing superfine fiber spunbond nonwovens, using soluble resin Excevaltm and PP or PE, PA and other composite spinning.

Excevaltm is soluble in water below 90 degrees, and can also be biodegradable. It absorbs water and is hydrophilic. It has thermal adhesion with PP (or PE and PA) and is very easy to mesh.

This spunbonded fabric has much better water absorbability than the conventional spunbonded fabric. Although its surface density is small, its strength can still be comparable to that of traditional spunbonded fabric, so it is a good material for durable clothing.