According to the durability, clothing is divided into two types: durable and non-durable (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.
The application of non-woven fabrics in non-durable clothing has been very popular, 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 expansion of existing materials in the field of apparel applications; the second is the development of new non-woven fabrics.
Non-durable non-woven clothing fabric
SMS non-woven fabric is a composite product of spunbond and melt-blown. It has the advantages of high strength, good filtration performance, no binder, no toxicity, etc. It has already played an important role in the field of medical and industrial filter materials. The latest applications are Using the characteristics of SMS ventilation, no fiber dust, and preventing the human body from exchanging particles with the outside world, it is used in pharmaceutical, bioengineering, optoelectronic processing, electrical components, and chips that require a highly clean production environment. Spunbond nonwoven fabrics are composed of high-strength continuous filaments and occupy 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 spunbond nonwoven fabrics. The product has the functions of flame retardant, antistatic, anti-radiation, hydrophobic and moisture-conducting, antibacterial and warmth protection.
In terms of the development of new fibers, water-soluble non-woven fabrics are an environmentally friendly product, and their applications are gradually expanding. The spunlace non-woven fabric is produced by using polyvinyl alcohol water-soluble fiber, which is a good material for making radiation-proof and pollution-proof clothing. In order to increase the protective effect, it can also be combined with a water-soluble film to increase the barrier performance of protective clothing. In addition, in the use of new fibers, foreign countries have also developed the technology of adding superabsorbent fiber (SAF) in the production process of non-woven fabrics. This non-woven fabric containing SAF has a particularly good soft feel and water absorption properties. When used as a underwear, it can quickly absorb the sweat of the human body and increase the microenvironmental comfort between the clothing 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 with a thermally bonded non-woven fabric of cotton and polypropylene fibers. The two-layer or three-layer composite material is composed of spun-bonded fabric , The product feels similar to pure cotton knitted fabrics, has the advantages of good strength and elongation, water absorption and water retention, fast wicking speed, and low pilling performance. After finishing, the instant elastic recovery when the elongation is 50% The rate can reach 83% ~ 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 after water repellent treatment; the lining is a belt Non-woven fabric with activated carbon; the innermost layer is tricot warp knitted fabric. Compared with the existing protective clothing, this kind of clothing not only provides military soldiers with special chemical protection, but also increases the portability of the clothing and reduces the cost. It can withstand at least 3 washings.
Durable non-woven garment fabric
Because non-woven fabrics have gaps with the requirements of apparel fabrics in terms of drape, elasticity, elongation, opacity and pilling, and lack of a certain artistic sense in appearance, they have considerable application in the field of durable apparel Difficulty. However, the non-woven fabric has the characteristics of not easy to loosen and slip off, can directly participate in the design of the fabric, and does not need to iron and lock the seam of the garment, which is different from woven fabrics and knitted fabrics. It is precisely because of the advantages of the simple sewing process of non-woven garments that many scientific researchers and enterprises have the courage to face the risks to carry out product development. The research focus in recent years has focused on how to improve the drapeability, abrasion resistance, elasticity and elastic recovery ability of non-woven fabrics, making it suitable for the requirements of durable clothing fabrics.
The joint venture of 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, and the skin layer is a polymer with good extensibility. The different proportions of the two components make the resulting spunbond nonwoven fabric have very good elasticity, lower modulus of elasticity, and higher strength and dimensional stability, which makes durable clothing for spunbond nonwoven fabric Offers the possibility.
Kuraray of Japan and domestic enterprises are jointly developing ultrafine fiber spunbond nonwoven fabrics, using Ex Juan cevaltm soluble resin and PP or PE, PA and Other composite spinning, one component is PP (or PE, PA), another One combination is Excevaltm. Exce-valtm is soluble in water below 90 ° C, biodegradable, can absorb moisture, and is hydrophilic. It has thermal adhesion after being combined with PP (or PE, PA), which is very easy to form a web machining. This kind of spunbond nonwoven fabric has much better water absorption performance than general spunbond fabric. Although its surface density is small, its strength is still comparable to traditional spunbond fabric, and it is a good material for durable clothing.
Spunlaced non-woven fabric has the characteristics of soft hand feeling, bulkiness, high hygroscopicity, and extensive use of fiber raw materials. It is the most suitable non-woven fabric for clothing. Therefore, its application research on durable clothing is the most. The US patent reports a durable spunlace nonwoven fabric with good abrasion resistance and drape, not easy to pilling, and good dyeing fastness. When the vertical machine direction elongation is 50%, the recovery rate can reach 90 %, And can be washed at least 25 times. The non-woven fabric has good elasticity and is suitable for making shirts and outerwear for daily wear. It combines personal comfort, good mechanical strength and aesthetics, and is an ideal clothing material.
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