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According to the degree of durability, clothing is divided into two categories: durability and non-durability (one-time). At present, the application of non-woven fabrics in clothing is mainly concentrated in the field of non-durable clothing, and the application of durable clothing is rarely reported.
Non-woven fabrics have been widely used in non-durable garments, such as spunlace medical protective clothing, PP disposable spunbond protective clothing and SMS medical protective clothing. At present, the development of new products in this field includes two aspects: one is the new development of existing materials in the field of clothing application; the other is the development of new non-woven fabrics.
Non-durable non-woven fabric
SMS non-woven fabric is a composite product of spunbonding and melt-blown. It has the advantages of high strength, good filtration performance, no binder and no toxicity. It has played an important role in medical and industrial filter materials. The latest application is It uses SMS to breathe, does not produce fiber dust, and prevents the human body from exchanging particles with the outside world. It is used in production environments where pharmaceuticals, bioengineering, optoelectronic processing, electrical components and chips are required to be highly clean. The spunbonded non-woven fabric is composed of high-strength continuous filaments, which occupies a large proportion in the disposable protective clothing market. The latest development is to add special additives or post-finish in the production process of spunbonded non-woven fabrics. The product has the functions of flame retardant, antistatic, anti-radiation, hydrophobic moisture, antibacterial and warmth.
In the development of new fibers, water-soluble non-woven fabrics are an environmentally friendly product, and their application range is gradually expanding. The use of polyvinyl alcohol water-soluble fibers to produce spunlace nonwoven fabrics is a good material for making radiation-proof and pollution-proof garments. In order to increase the protective effect, it can also be combined with the water-soluble film to increase the barrier properties of the protective clothing. In addition, in the use of new fibers, superabsorbent fiber (SAF) technology has been developed in the production of non-woven fabrics. The SAF-containing nonwoven fabric has a particularly good soft hand and water absorption property, and can quickly absorb the sweat of the human body when worn by the underwear, and increases the micro-environment comfort between the garment and the human body.
In the development of new composite non-woven materials, the United States has developed a new type of cotton fiber composite non-woven fabric, the surface layer is a thermal bonding non-woven fabric of cotton and polypropylene fiber, and the two-layer or three-layer composite material is combined with the spunbonded fabric. The product feels similar to that of pure cotton knitwear. It has good strength and elongation, water absorption and water retention, fast wicking speed and low pilling performance. After finishing, the elastic recovery is 50% elongation. The rate can reach 83% to 93%, suitable for making medical isolation suits and disposable underwear. In addition, the new generation of biochemical protective clothing developed by the US military makes full use of the advantages of woven, knitted and non-woven fabrics. The outer layer of the protective clothing is tear-resistant nylon/cotton fiber poplin, which is treated with water repellent; Non-woven fabric with activated carbon; the innermost layer is tricot warp knit. Compared with the existing protective clothing, this kind of clothing provides the military with special chemical protection, which increases the lightness of the clothing and reduces the cost, and can withstand at least 3 times of washing.
Durable non-woven fabric
Because the non-woven fabric has a gap between the requirements of the fabric, such as drape, elasticity, stretch, opacity and pilling, and lacks a certain artistic sense in appearance, it is quite suitable for the field of durable clothing. Difficulty. However, the non-woven fabric has the characteristics that it is not easy to loosen and slip, and the fabric can be directly involved in the design, and it is not necessary to iron and seam the seam of the garment, which is different from the woven fabric and the knitted fabric. It is precisely the advantage of the simple sewing process of non-woven garments, many researchers and companies have the courage to face the risk of product development. In recent years, research has focused on how to improve the drape, abrasion resistance, elasticity and elastic recovery of non-woven fabrics, making it suitable for durable apparel fabrics.
The joint venture between BBAFiberweb and DowChemical has developed a new type of spunbond elastic nonwoven fabric. The fiber is a sheath-core bicomponent fiber. The core layer is an elastomer. The skin layer is a polymer with good elongation. The different proportions of the two components make the obtained spunbonded nonwoven fabric have very good elasticity, low modulus of elasticity and high strength and dimensional stability, which is a durable garment for the spunbonded nonwoven fabric. Provides the possibility.
Japan Kuraray and domestic companies are jointly developing ultra-fine fiber spunbond nonwoven fabrics, using Ex鄄cevaltm soluble resin and PP or PE, PA, etc. for composite spinning, one component is PP (or PE, PA), another One combination is Excevaltm. Exce鄄valtm is soluble in water below 90 °C. It is also biodegradable, absorbs moisture, and is hydrophilic. It has thermal adhesion to PP (or PE, PA) and is very easy to form. Processing. The spunbonded nonwoven fabric has much better water absorption properties than the conventional spunbonded fabric, and although it has a small areal density, the strength can be comparable to that of the conventional spunbonded fabric, and is a good material for durable garments.
The spunlace non-woven fabric has the characteristics of soft hand feeling, bulkiness, high moisture absorption, and wide use of fiber raw materials, and is a kind of non-woven fabric which is most suitable for clothing. Therefore, it has the most research on the application of durable clothing. The US patent reports a durable spunlace nonwoven fabric with good abrasion resistance and drapability, is not easy to pilling, and has good dye fastness. When the elongation in the vertical machine direction is 50%, the recovery rate can reach 90%. %, and at least 25 washes. The non-woven fabric has good elasticity and is suitable for making shirts and outerwears for everyday wear, and has the advantages of close-fitting comfort, good mechanical strength and aesthetics, and is an ideal garment material.