People in ancient times had started using animal fur keep body warm, this is one of the earliest period clothing, in contrast, non-woven originated much later, although from the eighteen seventies British William Bywater manufacturing company of the earliest acupuncture non-woven machine, but the real commercial starting in nineteen fifties end, even if so, because the nonwoven do not need the traditional textile spinning and weaving process, but directly from the fiber into cloth, therefore, its growth rate far exceeds the traditional textile, and in health, environmental protection filtration, geotechnical construction, automotive, leather, packaging and clothing and other fields are widely used.
Clothing in accordance with the durability for durability and endurance / disposable clothing two, the non-woven fabrics in clothing applications mainly in non durable clothing field, on the durability of garment applications has been rarely reported, the non-woven fabrics in clothing in the field of application are briefly presented in this paper, we hope to domestic non-woven products development of enterprises play a role.
Non durable nonwoven fabric field
Nonwoven fabric in non durable clothing's application has become very popular, such as Spunlaced medical protective clothing, protective clothing and SMS PP disposable spun-bonded medical protective clothing. At present, the area of new product development includes two aspects, one is the existing material in the clothing new development in applied areas; two is the new development of nonwoven fabrics.
New application of 1 SMS composite nonwovens
SMS is a spunbond and meltblown composite products, with high strength, good filtering performance, without adhesive, non-toxic, has been in the medical and industrial filter material has played an important role, recent application is the use of SMS breathable, does not produce dust, fiber block body and the external particle exchange characteristics, its for the pharmaceutical, biotechnology, electronic processing, electronic components and chips require a high degree of clean production environment. In addition, through the spunbond technology improved, with fine denier spunbonded as support layer of SMS diaper leg impermeable enclosure, than the traditional SMS has more flexibility, and the cost is further reduced.
2 new application of spunbonded nonwoven fabric
Spunbonded nonwovens made of high strength continuous filament form, the disposable protective garment market account for a large proportion, the latest development in spunbonded non-woven production process by adding a special additive or finishing, so that products with flame retardant, antistatic, radiation, hydrophobic moisture, antibacterial, warmth and other functions, to the body with all the necessary protection function at the same time, but also can effectively prevent harmful substances such as invasion and dust.
Spunbonded nonwoven fabric of another new product is SFS composite material, two layers of spunbond nonwovens and the middle of the waterproof and moisture permeable membrane composite, the products make up the film strength insufficient, make full use of waterproof and moisture permeable membrane waterproof and blocking ability, which gives the material of waterproof and moisture permeable properties and barrier properties, and it has the same waterproof and moisture permeable and SF barrier properties, but SFS SF more than 1 layers of spunbond nonwovens composite, effective protection of waterproof and moisture permeable membrane, makes the material more security, more functional, is an ideal material for disposable medical protective clothing.
3 of new fiber by
Dupont companies use NOMEX work EVLAR this song Fang by maximus and steal Xing Tao from Mou trace shading Ying OMEX? E-89TM products suitable for high temperature and fire retardant protective clothing and lining, two kinds of fiber mixed use to provide better protection performance. Products with light weight, soft, drape and good durability, high temperature shrinkage performance of small, easy molding, sewing and can be molded, washing and drying characteristics. Compared with woven fabric, NOMEX? E-89TM product surface area, by coating processing and other products composite is more convenient.
Water soluble nonwoven fabric is a kind of environmental protection product, its application scope is gradually expanding. Using PVA water soluble fiber spunlaced non-woven production, is the production of radiation and contamination of protective clothing materials, in order to increase the protective effect, can also with water soluble compound film, increase the protective barrier properties. According to the different fiber structure there are 90 main and 60 degrees centigrade water dissolved in two types, at present our country is in 90 degrees C water soluble non-woven fabrics have been able to produce, but it is difficult to find 60 C soluble non-woven fabrics.
In addition, in the new fiber used, abroad has also developed in the non-woven production process by adding super absorbent fiber ( SAF ), which contains SAF non-woven fabric has a particularly good soft handle and water absorption, as lingerie wearing can quickly eliminate the human body absorb sweat, increase between the garment and the human body micro environment comfort.
4 new composite nonwoven materials research
The United States developed a new type of cotton fiber composite non-woven fabrics, the surface layer is a cotton and polypropylene fiber thermal bonded nonwoven spunbond nonwovens, and composed of two or three layers of composite material, the product feel and pure cotton knitted fabric are similar, having good strength and elongation, water absorbent and water, the wicking speed, pilling performance of small advantages, after finishing, elongation of 50% when the instantaneous elastic recovery rate can reach 83 ~ 93%, suitable for the production of medical isolation and disposable underwear.
The United States Army in the recent and research institutes cooperation, developed using the non-woven production of protective clothing to replace the existing military supplies, such as the new generation of biochemical protective clothing is to make full use of woven, knitted and woven fabric has the advantages of three kinds of protective clothing made, the outer layer is a 50 / 50 tear of nylon / cotton fiber poplin, after refusing to water treatment; lining with activated carbon non-woven fabric; the innermost layer for the Terry division of warp knitting fabric. Compared with existing protective clothing, the clothing to provide special soldier anti chemical protection at the same time, increased the clothing, portability, and low cost, can withstand at least three times of washing. In addition, the United States Marines using the new nonwoven technology developed a composite non-woven material, it has good abrasion resistance and low pilling of fabric, and the inner layer outer layer made of absorbent, water repellent, combat uniforms have better comfort and freedom of movement, and the production cost is low.
Durability non-woven fabrics field
As a result of non-woven fabrics in the drape, elasticity, tensile properties, opacity and pilling etc and the requirement of clothing fabrics have difference in appearance, and the lack of a definite sense of art, so it should be used for durable clothing field is quite difficult, but is not easy to , loose edge non-woven and slippage, can be directly involved in the selvage design, does not need to carry out ironing garment seams and seam characteristics, this distinction in woven and knitted fabrics, are optimistic about non-woven clothes sewing technique has the advantage of simple, many researchers and enterprises face the risk of product development, in recent years the research focus on how to improve the fabric drape sex, abrasion resistance, elasticity and elastic recovery capacity and other properties, making them suitable for durability of the requirement of clothing fabrics.
1 spunbond nonwoven fabric
BBA Fiberweb and Dow Chemical joint venture company developed a new type of spunbonded stretch nonwoven fabric, fiber as sheath-core bicomponent fiber, the core layer is an elastic body, cortex is a extension of the polymer, by adjusting the skin core two fractions of different proportion, the spunbonded nonwoven fabric has a very good flexibility, low elastic modulus and high strength and dimensional stability, which for spunbond non-woven clothing offers the possibility to do durability.
The Japanese Cola Korea and domestic enterprises are joint research and development of superfine fiber spunbond non-woven fabrics, using Excevaltm soluble resin with PP or PE, PA for composite spinning, a component of PP (PE, PA ), another is Excevaltm. Excevaltm is soluble in water is less than 9O C, is biodegradable, and can absorb moisture, and is hydrophilic, and PP ( or PE, PA ) composite is thermally adhesive, very easy in net processing. The spunbond nonwoven absorbent properties than general spunbond nonwovens is much better, although its surface density is small, while the strength of will and traditional spunbond nonwovens, durability and good selection of clothing.
2 new spunlaced nonwoven fabrics
Spunlaced non-woven fabrics have a soft hand, bulkiness, high hygroscopicity, fiber raw materials used widely, is the most suitable clothing of a non-woven fabric, therefore, the research on the application of durable clothing most.
The United States Patent reported a durable fabrics, good abrasion resistance, drapability, easy pilling, good dye fastness, when perpendicular to the machine direction of elongation of 50%, recovery rate can reach 90%, and at least 25 times after washing. The non-woven cloth particularity lies along the machine direction 30 occlusal? 0 block magpie downtown Bi for penalty slope, cap peaks developed Che Xia beam coil I planted Strider hold, be sprouts with W Mu agent has rose marginal tentorial, lemon Li Song kurtosis U N Huang ABCD, dilute the, Ying Huang Yong hehheh frequency raised about its industry and two end Che Xia Lian mulberry when government targets account Bei gadolinium over shallow S brother by Strider swim from Mu and which way of stealing, MI 8 AU from Tao Mou shit now as spectral charm stick 4 but a basket of Tuen cooked together, rose and warns that the total items off bath has no Deng Kang group, rabbit stopped at my final miscellaneous anxiety? Another American patent describes a wrinkle Spunlaced non-woven production method, the raw materials can be natural fiber or synthetic fiber spunlaced, after a pattern transfer device 2 deformation processing, the initial formation of the nonwoven fabric is very smooth, no crease. After finishing the fabric after appeared similar to the elephant skin wrinkles, the crease Spunlaced non-woven fabrics for apparel fabrics.
3 needle non-woven fabric
Domestic developed an ultrafine fibre polyurethane material, is fascicular superfine fiber as raw material, the processing for acupuncture non-woven fabric, impregnated polyurethane resin, separating and extracting and dyeing and finishing processing and. Superfine fiber fabric with high strength, uniform quality, soft and smooth hand-feel, drape and washable, easy storage, bright colors and diverse, plentiful fluff uniform and conducive to design cutting etc., appearance resembles leather, natural leather having many features, but overcomes the dermal irregular size, inner quality difference is big, color change less defects, is an ideal high imitation leather apparel fabrics.
Wool fabric is the recent development of a hot, because of wool fiber has a very good flexibility and elastic recovery performance, under the action of external force, the 30000 on the strength of fiber bending will not suffer any damage, therefore very suitable for thick fabric production. International Wool Secretarian is associated with a number of research institutions engaged in needle wool nonwoven development work, the current research is mainly focused on the following 4 aspects:
Improving the non-woven production process to improve product color expressive force, with the traditional fabric like colored squares and stripe pattern;
The improvement of wool material hook wire pilling phenomenon;
Improve product draping and shape retention;
Improving the wool nonwoven fabric finishing technology of wool fabric, to give the excellent mechanical properties, can meet the use requirements for materials.
4 new material utilization and the development of composite materials
Phase change materials ( PCM ) is in a certain temperature range of phase change material. When the environment or human skin temperature reaches the clothing of phase change material inside the melting point, PCM will heat absorption from solid into liquid, in the clothing layer to produce temporary refrigeration effect. When the PCM clothing in the colder environment wearing clothing at temperatures below the phase change material, melting point, PCM will release heat from liquid to solid, so that the layer of clothing produced temporarily increasing temperature effect. The temperature regulating fiber non-woven fabric for clothing or clothing lining, can not only increase the thermal insulation of clothing, but also can make the clothing with temperature control function. Recently, the United States and Germany companies jointly developed with PCM nonwoven interlining, product development is the original intention for the United States National Aeronautics and Space Administration ( NASA ) use, has passed the relevant departments of the testing, phase change material temperature change point of 30 DEG C, the conversion of the inside of the garment has buffer effect, can reduce the skin temperature change, improve the shuttle crew wearing thermal comfort.
Freudenberg company developed a composite elastic lining, is the use of non-woven fabric through stitching reinforcement made, non-woven Booker weight was 10 ~ 40 g / m2, stitched coil weight is 5 ~ 25g / m2, the stitching line and non-woven fabric weight ratio of 1.3: 3.1, the composite non-woven fabric with very good elastic, along the longitudinal elongation reached 50 ~ 120%, is the production of elastic and knitted garments ideal lining.
In short, in the face of clothing this big market, non-woven fabrics with its production speed, simple process and low cost and other advantages in non durable clothing areas occupy a considerable share, while in durable clothing market also needs modern nonwoven technology and traditional textile finishing the perfect combination of technology, I believe that through these techniques between the cross and the conformity, in line with requirements for durability of fabric with low cost was developed, and eventually seize the clothing market.
