空气变形加工技术/Air deformation processing technology，
Knowledge that 90% of textile people do not understand - air deformation processing technology
Air deformation, also known as blow deformation, refers to a process in which filaments are treated by compressed air to obtain bulkiness and have similar short fiber characteristics. Its product is air textured yarn (ATY), and the appearance of ATY is completely different from DTY. DTY imparts a spiral deformation to the spiral shape of the thread, and has good elasticity. but the fabric cannot change the special flash, waxy feeling. poor gas permeability and easy pilling of the synthetic fiber; the ATY surface has a stable loop and an overhang. The fiber head, the fabric has high bulkiness and pilling resistance. overcomes the shortcomings of the elastic silk fabric, looks like a spun yarn, has a shorter processing process than the spun yarn, simple equipment and obvious economic benefits.
The air deformation technology was first researched by DuPont in the early 1950s. Its product is “Taslan”, so it is also called “Taslon” technology. The technology has been slow in the 25 years after the invention. The main reason is that it can only process medium thick linear density silk at that time, which is not suitable for clothing, and the nozzle structure is not ideal, the product uniformity is poor, the compressed air consumption is too large, and the cost is high. . With the continuous improvement of the nozzle structure.the deformation speed is continuously increased and the cost is increasingly reduced. The air deformation technology can process many kinds of original yarns, and has a wide range of linear density. The stretching, deformation and mixing of fibers can be carried out at the same time, the twisting process is omitted, the operation is simple, and the product has the appearance of a natural fiber similar to the spun yarn, and is flexible. changeable.
Compared with DTY and network wire, ATY accounts for a small density. In 2000, its output was only 1/13 of the false twist textured yarn. However, its development has been rapid. The number of air-deformed spindles in the world was 16,000 spindles in 1982, 35,000 spindles in 1988, 70,000 spindles in 1990, 128,000 spindles in 2000, and nearly 150,000 spindles in 2003.
Before the 1980s, there were only three manufacturers of air texturing machines, namely EItex and Barmag in Germany and Enterprjse in the United States. At present, there are several manufacturers of air texturing machines, such as AiKi and Murata in Japan, Giudici and RPR in Italy, ICBT in France, Erdmann in Germany, and Heberlein in Switzerland.
一、空气变形原理(Principle of air deformation)
Air deformation is mainly achieved by air deformation nozzles, as shown in Figure 13-14. The wire is sprayed into the nozzle, jetted through a stream of compressed air in the nozzle, blown, blown, and then accelerated in an accelerated wire feed tube (venturi tube). The individual filaments remain substantially parallel prior to exiting the nozzle, and the strands are rotated 90° as they exit the nozzle, forming curved loops of different sizes and curvatures. Due to excessive feeding, a free length of a certain length occurs, and when the yarn is wound, a network is formed over the bending point to form the basic structure of the air-deformed yarn. Depending on the requirements of the product, heat setting or cutting ring processing can be performed in other mechanisms of the air texturing machine to produce pile-like fluff on the surface of the yarn.
二、空气变形丝的几何结构(Air textured wire geometry)
The air-deformed filament is more fluffy than the original yarn, and has a good hand feeling, and has the characteristics of a spun yarn, which is a result of changes in the surface geometry and the filament structure of the filament.
1．空气变形丝的表面几何形态（Surface geometry of air textured yarn）
The surface of the air-deformed filament has a furry resembling a bulked yarn or a wire loop of a different size. The fur is formed by cutting the wire loop, so the size and distribution of the wire ring have an effect on the characteristics of the air textured wire. The height of the wire loop and the density of the wire ring (the number of times the wire ring appears per unit length) can be used to describe the surface of the air textured wire. Geometry. The height of the loop is closely related to the density, see Figure 13-15(a). As can be seen from the figure, the density of the wire loop decreases as the height of the wire loop increases. When the height of the wire loop is 0.1-0.4mm, the height of the wire loop is increased by 0.1mm. The wire loop density is reduced by about 50%; when the wire loop height is above 0.5 mm, the wire loop density approaches zero. The height of the loop is also related to the uniformity of the distribution of the loop, see Figure 13-15(b). The height of the wire loop is small, and its distribution is relatively uniform; the height of the wire loop is large and the degree of dispersion is increased.
2．空气变形丝的丝体结构牲（Silk structure of air deformed silk）
The air deformed filament structure is similar to the network filament. It is also a turbulent flow generated by high-pressure airflow as a twisting force, but its airflow has lateral, axial and vortex flow, and the velocity of the airflow is different at any point on the cross section of the wire in the nozzle, so the monofilament is in turbulent flow. The intersections with each other form a network structure, or a fiber is wound with another fiber as an axis to form an intricate filament. The geometry model of the air textured yarn is shown in Figure 13-16.
三、空气变形机的组成及其作用(The composition and function of air deformation machine)
The air deformation machine is mainly composed of five parts: stretching zone, wet deformation zone, stabilization zone, shaping zone and winding zone (see Figure 13-17).
It consists of feeding roller and stretching roller. It mainly stretches the feed yarn which is not fully stretched. Generally, the stretching roller is a hot roller. The temperature is determined according to different fiber types, such as hot roller when stretching POY. The temperature is between 60 and 80 ° C, and it can also be stretched in a cold state.
2．给湿变形区(Wet deformation zone)
Before the yarn enters the deformation nozzle, the water is wetted first, which can improve the efficiency of the deformation device, increase the deformation effect, and improve the uniformity and stability of the wire. Increases the amount of wetting and also reduces air pressure and consumption. The air deformation nozzle is the core of air deformation, and different air deformation nozzles are selected according to the characteristics of the deformation original yarn and the properties of the final deformation yarn.
空气变形喷嘴不但影响变形速度、空气消耗量等经济指标，而且影响变形丝的品质。目前，喷嘴的种类很多，基本可归纳为两类，即杜邦公司Taslan系列喷嘴(见图13-14)和Heberlein公司的Hema喷嘴(见图13-1 8)，美国EIVIAD公司的蛇蝎形喷嘴虽与杜邦公司的喷嘴结构不同，但其主要结构相同，属于同一类型：DupontⅪV型(用于细线密度丝)和Dupont X V(用于粗线密度丝)喷噻的效果较好，其优点是加工线密度范围大(50～1】000dtex)，加工速度高达800nn/min；但调整加工线密度范围时。操作复杂，喷嘴内易积垢。Heberlein公司的T-100型或T-300型Hema喷嘴具有不易积垢、易调整的优点，其加工速度约为650m/min，喂入原丝线密度为50～700dtex，适合加工线密度小或线密度中等的衣用丝。EMAD公司的150PRN型适于加工40～500dtex的原丝，3000PRN型适合加工500～10000dtex的原丝，该喷嘴可同时喂入四股原丝，并可用不同超喂率制取包芯丝；3000PRN型喷嘴尤其适宜制作花式繁多的装饰用丝。喷嘴主要由外壳、导丝针、文丘里管、挡气球或挡气板组成。
The air deformation nozzle not only affects economic indicators such as deformation speed and air consumption, but also affects the quality of the textured yarn. At present, there are many types of nozzles, which can be basically classified into two types, namely DuPont Taslan series nozzles (see Figure 13-14) and Heberlein's Hema nozzles (see Figure 13-1 8), although the American EIVIAD company's snake-shaped nozzles It is different from DuPont's nozzle structure, but its main structure is the same, belonging to the same type: DupontXIV type (for fine line density wire) and Dupont XV (for thick line density wire) thief effect is better, its advantage is processing The linear density range is large (50~1]000dtex), and the processing speed is as high as 800nn/min; however, when the processing line density range is adjusted. The operation is complicated and the nozzle is prone to fouling. Heberlein's T-100 or T-300 type Hema nozzles have the advantages of being less prone to fouling and easy adjustment. The processing speed is about 650m/min, and the feed line density is 50-700dtex, which is suitable for processing line density or line. Medium density clothing yarn. EMAD's 150PRN type is suitable for processing 40~500dtex raw silk, 3000PRN type is suitable for processing 500~10000dtex raw silk, the nozzle can feed four strands at the same time, and can make cored wire with different overfeed rate; 3000PRN type The nozzle is particularly suitable for making a wide variety of decorative filaments. The nozzle is mainly composed of a casing, a guide wire needle, a venturi tube, a balloon or a gas barrier.
Figure 13-18 Hema nozzle
The airflow entering the nozzle after being accelerated by the annular narrow slit generates strong turbulence in the turbulent flow chamber to loosen the yarn. By adjusting the position of the guide needle, the annular gap of the nozzle can be adjusted to adjust the degree of turbulence. When the annular gap area is equal to or slightly larger than the throat section of the venturi, the airflow velocity into the turbulent chamber is the largest and the deformation effect is optimal. The airflow velocity at the nozzle outlet can reach 500-600 m/s. This supersonic airflow causes the pressure to be lower than the outside to generate a shock wave. After the pressure is increased to the external pressure, the airflow can flow out. These air streams cause irregular changes in the monofilament, creating high frequency vibrations that continue to fluff the filaments at the exit. The shock wave acts as a damping deceleration on the strands leaving the nozzle, allowing the filaments to achieve different speeds, resulting in drift and bending to form a loop.
If the exposed wire loop from the deformation zone is not tightened, the stability is poor, and the tensile tension formed by the difference of the two sets of roller speeds in the stable zone can improve the stability of the wire loop and at the same time make the linear density of the textured wire. The tension at each point during the process of elongation and the entire air deformation process meets the process requirements. The area of the fiberizing device can be given an ATY spun yarn style.
The air-deformed wire passes through the shaping zone at a certain temperature, which can reduce the boiling water shrinkage rate, thereby ensuring the dimensional stability of the air-deformed wire during the post-processing, and at the same time reducing the ring-shaped knot, making it more stable and firm, reducing gas Circle loss. The higher the setting temperature, the smaller the balloon.
The ATY is wound into a bobbin, and the winding angle a is an important condition for forming. As the a changes, the basic frequency of the traverse guide wire changes correspondingly, thereby affecting the winding tension, and the molding conditions permit. Next, the winding tension can be finely adjusted by changing the winding angle.
四、空气变形加工的主要工艺条件(Main process conditions for air deformation processing)
1．变影区超喂率OFT(Variation zone overfeed rate OFT)
变形区超喂率(Deformation zone overfeed rate)：
The overfeed rate in the deformation zone is an important process parameter for filament air deformation. Ultra-feeding increases the degree of entanglement and looping of the filaments under the action of the jet stream, and the number of loops distributed along the length of the deformed filament increases, increasing the bulkiness and covering effect of the strands. If the overfeed rate is too low, it is not conducive to the entanglement of the thread into a circle; however, when the overfeed rate is too large, the surface of the thread is too large, the strip is loose, the entanglement fastness of the loop is reduced, uniformity and stability Poor sex, causing difficulties in weaving and post-processing. In addition, as the overfeed rate increases, the deformed filament density increases, the relative strength decreases, and the stability of the strand structure decreases. This is because only a portion of the monofilaments in the strand are stretched after a large number of loops are formed. The effect of overfeed rate on the linear density and relative strength of air textured yarn is shown in Figure 13-19. Since the relative strength of the textured yarn is related to the strength and linear density of the fiber, the relative strength is most affected by the overfeed rate. The strength loss of the air textured yarn is usually measured by the relative strength drop rate. Some people have done experiments, the results show that the relative strength drop rate of 167dtex polyester air textured yarn is 33%~48%, and the relative strength drop rate of 333dtex polyester air textured yarn is 24%~38%.
The overfeed rate is closely related to the structural stability of the air textured yarn. Since the yarn must be mechanically stretched and fixed in the stable zone after the air is deformed, if the structure of the air-deformed yarn leaves the nozzle is stable, the wire loop and the yarn are not easily slipped during constant-speed stretching, and the tensile tension of the wire is large. . If the structure of the air textured yarn is unstable, the tension in the stable zone is small when stretched. Therefore, the tension value of the running yarn in the stable zone can reflect the stability of the air textured yarn. The overfeed rate is increased, the tension of the yarn in the stable zone is lowered, and the structural stability of the yarn is lowered. Generally, if the structural instability value of the air textured yarn is less than 2%, the overfeed rate should be less than 25%.
The overfeed rate also plays a decisive role in the style of air textured yarn. For the two feed yarns, when the overfeed rate is the same, the side-by-side air-deformed yarn is obtained; when the overfeed rate is different, the cored yarn is obtained. The overfeed rate is changed regularly, and the size of the wire loop is periodically changed to produce a thick and thin spacer wire. If the raw yarns of different tremors are fed, the spacer yarns can be produced.
As the overfeed rate of the deformation zone increases, the deformation tension decreases slightly, while the tension and winding tension of the stable zone and the shaped zone are significantly reduced. Therefore, when changing the overfeed rate, other process parameters should be adjusted accordingly.
Improve processing speed and increase production efficiency. But the two are not directly proportional. Because the increase in wire speed will lead to a decrease in the rate of increase in linear density; as can be seen from Figure 13-20. The wire speed is increased from 300m/min to 600m/min, and the linear density increase rate is decreased by 35%~40%. When the speed of the yarn through the nozzle is increased, the relative velocity of the airflow in the wire and the nozzle is decreased, that is, the dynamic pressure of the airflow is on the wire. The force is falling. Thereby, the linear density increase rate is lowered. At the same processing speed, the finished yarn having a small linear density has a linear density increase rate slightly higher than that of a wire having a high linear density. Under the condition of the same nozzle and the diameter of the wire, the filaments with small linear density are easy to be displaced under the action of airflow, while the filaments with large linear density are more limited by the number of filaments. The mutual constraint between the monofilament and the monofilament is difficult, so the process of displacement, bending, entanglement and looping of each monofilament is difficult. Therefore, the higher the density of the original thread, the lower the processing speed should be. Usually, when processing 55 ~ 77dtex yarn. The speed is 700m/min; 167~330dtex. Take 500 ~ 600m / min; 700dtex or more, take 300m / min. If two strands of 330dtex yarn are processed and the monofilament linear density is below 3dtex, the processing speed is 550m/min. If the stabilizing zone is provided with a short fiberizing device, the processing speed is below 400m/min.
When the draw ratio is constant, the processing speed is increased, and the tensile tension is lowered, which adversely affects the stretching. Therefore, when increasing the processing speed, adjust the draw ratio accordingly.
When the processing speed is increased, the tension of the yarns in each zone is correspondingly reduced. Sometimes the tension is reduced so that production cannot continue, and the relevant process parameters must be adjusted. For example, the wire speed is increased, the tension in the stable zone is lowered, and the instability of the deformed wire loop is increased; the wire speed is increased, and the heat setting time is shortened, which is disadvantageous for setting, but the tension in the setting zone is lowered to facilitate the setting. For this reason, some experiments have been carried out. The results show that as the processing speed increases, the heat setting effect of the yarn becomes worse, which is manifested by an increase in the boiling water shrinkage of the air-deformed yarn.
Changes in air pressure cause changes in the state of the airflow, causing changes in the deformation process. Increasing the pressure of the compressed air is beneficial to the formation of the loop and the deformation effect is enhanced. But the experimental results show that only O. The pressure of 6~0.9MPa can meet the requirements of air deformation process and textured wire quality. Exceeding this pressure has little effect on the deformation effect.
4．定型温度和定型时间(Styling temperature and setting time)
Under the premise that the length of the shaped heater is constant, the shaping effect depends on the walking speed of the yarn and the temperature of the heater. As the cohesive strain shrinkage of the fiber increases as the setting temperature increases, the internal stress relaxation becomes more thorough. Therefore, within a certain range, the higher the setting temperature, the longer the time. The tight loop of the air-deformed wire is tighter. The better the structural stability of the textured yarn, the lower the boiling water shrinkage. Since the loop of the air-deformed wire is filled with air, the heat transfer effect is worse than that of the stretch-deformed wire. If the wire core is required to achieve the same hair-to-effect, the heating time must be long. Therefore, the deformation speed is air-deformed. The effect of the stereotype effect is particularly evident.
The shaping can also reduce the exposed wire loop of the air-deformed wire, improve the stability of the air-deformed wire, reduce the boiling water shrinkage rate, increase the bulkiness, and improve the processing property of the wire and the hand feeling of the fabric. With the increase of the setting temperature, the strain of the air-deformed wire increases, the setting tension increases obviously, but the boiling water shrinkage rate of the textured yarn decreases.
The setting temperature is 190-230 ° C, and the strength of the air-deformed wire decreases slightly as the temperature increases. The effect of stereotypes on the relative strength of air textured filaments is also related to the linear density of the filaments. The finer the monofilament, the more the loops, the more the relative strength of the textured filaments decreases. The elastic recovery rate of the air-deformed filament decreases slightly with the increase of the setting temperature.
When the air is deformed, the tension of the yarn in each zone has a great influence on the properties of the finished product. If the tension of the original yarn is too high, it will cause a change in the density of the POY line, resulting in unevenness of the strip. The tension of the yarn in the deformation zone depends on the overfeed rate and the amount of moisture supplied. The low tension facilitates the opening and curling of the yarn in the nozzle. However, if the original yarn feeding tension is too low, the feeding state will be unstable, resulting in uneven stretching, and the breaking rate is increased, which brings difficulty to the yarn processing. The tension of the thread should be controlled at about 3.0 cN. The tension of the stable zone has an effect on the entanglement fastness, loop shape and curl stability of the loop. Should be controlled at 5.5 ~ 8.0cN. Low tension setting is beneficial to the stress relaxation in the fiber, improving the air deformation effect and reducing the boiling water shrinkage of the air deformed wire. The winding tension is determined according to the linear density of the processed yarn and the density of the package. Too high will damage the loop of the surface of the air-deformed wire. Too low will affect the formation of the package.
Before the yarn enters the air deformation nozzle, the water is wetted first, which can obviously enhance the deformation effect and improve the uniformity and structural stability of the air deformation yarn. Increasing the amount of water supplied also reduces the pressure and consumption of compressed air. The turbulence in the nozzle is enhanced by the increase in air humidity. Figure 13-21 shows the change in the tension of the feed line between the feed water and the unfed water with the overfeed rate. It can be seen from the figure that under the same conditions of overfeeding, the tension of the yarn when water is supplied is much higher than that when the water is not supplied, so the deformation effect is much better. The amount of water supplied to the thread should be uniform, otherwise it will affect the heat setting effect, which not only makes the setting fastness worse, but also causes uneven dyeing. The amount of water supplied is determined by the tension of the yarn, the processing speed, the linear density of the thread, and the overfeed rate. The tension is high, the linear density is high, the processing speed is fast, and the overfeed rate is large, so the water supply is large. However, the excessive amount of water supply causes the tension of the thread during the deformation process to fluctuate, and the oil on the surface of the thread is easily washed away, so that the wire generates static electricity in the hot box, causing uneven shaping and affecting the dyeing performance. Generally, the water supply should be controlled at 1.0~1.5L/h. If the water supply is too low, the deformation effect is poor and the linear density is lowered; if the water supply is too high, not only the deformation effect is not improved, but also the water cost is increased.
7．丝条的单丝线密度(Monofilament linear density)
The monofilament line density of the textured yarn increases. Then, the bending rigidity is improved, the wire is not easy to be entangled, the structural instability of the air-deformed wire is increased, and the large wire ring and the floating wire appear on the surface of the air-deformed wire, so that the quality of the air-deformed wire is lowered. When the monofilament linear density exceeds 2.8 dtex, the processing is difficult; if the monofilament linear density exceeds 3.9 dtex, it is difficult to obtain a textured yarn having a uniform appearance, a stable structure, and a fluffy surface. For decorative air textured yarns with a bus density of 1000 dtex or more, the monofilament linear density is not limited by this.
The density of the monofilament increases, and the instability of the textured yarn increases. However, when the linear density is below 2 dtex, the instability tends to decrease. This is because the internal friction of the wire having a small linear density is enhanced to reduce the instability. As the strands become thicker, the entanglement and the loop forming begin to deteriorate, forming less filaments and poorly intertwined filaments, and reducing stability. Filaments having a monofilament linear density of 2 dtex or less are most suitable for deformation processing. The filaments having a monofilament linear density of 1.67 dtex or less exhibited a better interlaced core and a surface loop, and the filament having a monofilament linear density of 6.8 dtex was almost free of a wire loop.
8．原丝总线密度(Raw wire bus density)
Various types of nozzles have a suitable line density range. When the proper bus density is exceeded, the deformation effect is not good. When the linear density is increased, the airflow further becomes turbulent, thereby affecting the deformation effect; in addition, in the presence of a plurality of monofilaments, the possibility that the wire loop is thrown when tension is applied increases due to an increase in the number of turns. If the Y-100 type Hema nozzle is used, the single filament density of 1.67dtclxl is less than 66; and under the same deformation condition, when the Y-341 nozzle is used, the suitable bus density is 333dtex, and the number of filaments is 198 roots.
喷嘴类型不同，其生产的变形丝的稳定性、线密度和强度的变化也不同。standard—CoreHema喷嘴生产的ATY的稳定性好，而用Taslan X Ⅳ型喷嘴制成的变形丝稳定性较差。Taslan XⅣ喷嘴生产的变形丝，其表面以大的丝圈和弧圈为主；但用Hema喷嘴生产的变形丝拥有较多数量的小型丝圈。使用T-100型和T一341型Hema喷嘴变形的丝有相似的不稳定性，但变形丝的线密度和强度具有不同的特性。由T-341型Hema喷嘴变形的丝具有较高的线密度，增加值在17％左右。这种喷嘴与其他喷嘴相比，压缩空气的消耗量虽然较大，但能得到令人满意的变形，因为这种喷嘴可得到较高的气流速度。由T一341型喷嘴加工的变形丝，其强度下降最大可达到约50％。
The type of nozzle is different, and the deformation, linear density and strength of the textured yarn produced are also different. standard—The ATY produced by the CoreHema nozzle has good stability, while the textured yarn made with Taslan X IV nozzle has poor stability. The deformed wire produced by the Taslan XIV nozzle has a large wire ring and an arc ring on its surface; however, the textured wire produced by the Hema nozzle has a large number of small wire loops. The filaments deformed using the T-100 and T-341 Hema nozzles have similar instability, but the linear density and strength of the textured yarn have different characteristics. The wire deformed by the T-341 type Hema nozzle has a high linear density and an increase of about 17%. Such a nozzle has a larger consumption of compressed air than other nozzles, but can be satisfactorily deformed because such a nozzle can attain a higher air velocity. The textured yarn processed by the T-341 nozzle has a strength drop of up to about 50%.
几种变形喷嘴的变形效率依次为：Ts一411型Hema．Taslan XⅣ型，T一100型和standard—C0re Hema。
The deformation efficiency of several deformation nozzles is: Ts-411 type Hema. Taslan XIV type, T-100 type and standard-C0re Hema.
In addition, the winding overfeed, the winding angle of the winding bobbin, the quality of the raw yarn, the temperature and humidity of the processing plant, etc. all affect the performance of the air textured yarn to varying degrees. In the formulation of air deformation process conditions, it is necessary to consider the product use, but also consider the nature of the raw silk and the type of process; it is necessary to consider the individuality of each process factor, and also consider the interrelationship of each process condition. For example, ATY is used to produce wool-like woven garment fabrics, and the process requires two filaments to be processed side by side. The monofilament linear density requirement is less than 2.75 dtex. Because the wool-like fabric has high requirements on the boiling water shrinkage and crimp stability of the air-deformed yarn, it must have sufficient setting temperature and setting time, but the high setting temperature will affect the strength and the energy consumption will also increase.
五、空气变形丝的应用(Application of air textured yarn)
Compared with the false twisted textured yarn, the air textured yarn has the appearance of a spun yarn, the aurora and waxy feel of the false twisted textured yarn, and the covering effect and heat preservation property are similar to those of the worsted yarn. Using different deformation processing conditions, the air-deformed yarn can have the appearance and feel of a wool type, a spun yarn type, a hemp type or a silk type. There are many types of air textured yarns, which can be divided into three types.
1．单股空气变形丝(Single air deformed wire)
It means that a filament is fed into the nozzle for air deformation, and the density of the original yarn is 78-333 dtex. According to different super-feeding, the size of the wire loop can be adjusted appropriately, and the bulkiness is about 20%
2．并列空气变形丝(Parallel air deformation wire)
It means that two or more filaments are fed into the nozzle in parallel at the same overfeed rate for air deformation. The density of the original thread is 56-333 dtex, and the density of the finished thread is 111-999 dtex. The short fiberizing device can be used to break the wire loop of about 1/3 of the ATY surface to form fluff, the wire loop is not exposed, and the hand feeling, luster and appearance are very similar to the spun yarn. The products of around 389dtex are the most distinctive.
3．皮芯空气变形丝(Leather core air textured yarn)
It means that two or more filaments are fed into the nozzle at different overfeed rates. The super-feeding small thread acts as a core wire, and the super-feeding large thread acts as a skin. The linear density of the finished yarn is 333 to 1221 dtex.
When air deformation processing. Different raw yarns can also be blended to form various color threads. The raw silk can be different kinds of synthetic fibers, such as polyester, polyester, polyester, etc.; the same fiber with different specifications can be used, such as linear density, twist, shrinkage, cross-sectional shape and color:
The air-deformed silk is woven into a tweed, and the physical index of the fabric, in addition to the active rate, can exceed the false-twisted low-elastic silk fabric. In order to improve the activity rate of the air-deformed silk fabric, it is generally possible to use an air-deformed yarn to be interlaced with a false-twisted low-elastic yarn or other chemical fiber filaments.
Air-deformed silk can be used to make fabrics, car seat cushions, furniture fabrics, carpets, duffel bags, socks, etc. Especially in the field of clothing, in recent years, it is more widely used, and can be used to make thin fabrics and thick fabrics for men and women suits, jackets, coats, ski clothes, windbreakers, outerwear, dresses, sportswear, shirts, dresses, swimwear, underwear, etc. . In particular, when fine filaments, shaped filaments, composite filaments, cationically modified polyester filaments, mother liquors or raw liquid colored filaments are used as the raw yarns, various colored yarns are produced by blending fibers, and various products developed thereby are deeply consumed. Welcome. With the development of science and technology and the continuous improvement of deformation nozzles, special air-deformed yarns with superior performance will be developed for use in clothing, decoration and industrial fields.