Composite yarn and fabric made of same

Abstract

The invention discloses a composite yarn and a fabric made of the composite yarn. The composite yarn is composed of short fibers and filaments, the distribution oscillogram of the fiber lengths of the short fibers has a plurality of wave crests, the short fibers in the waveform close to the maximum fiber length are short fibers A, the short fibers in the waveform close to the minimum fiber length are short fibers B, and the difference between the average length of the short fibers A and the average length of the short fibers B is 10-64 mm; z twists and S twists are alternately distributed in the length direction of the filaments. The composite yarn with thick and thin appearance, dry and comfortable hand feeling and high strength, which is exactly similar to a hemp fiber product, can be obtained without equipment transformation, and fabrics made of the composite yarn can be widely used for making sportswear and casual wear.

Description

Composite yarn and fabric made therefrom Technical Field

[0001] The invention relates to a composite yarn and a fabric made from the composite yarn. Background Art

[0002] As we all know, linen fiber fabrics have a special coarse and fine appearance style, are dry and non-sticky, breathable and cool, and are ideal textile products for summer. However, linen fiber is expensive and has disadvantages such as poor wrinkle resistance and quick-drying properties.

[0003] Currently, many linen-like fabrics are available on the market, claiming to possess the dry feel and aesthetic appeal of linen fabrics. For example, Japanese Patent Application Laid-Open No. 2018-145564 discloses a blended yarn and fabric made therefrom. Specifically, the blended yarn comprises staple fibers A and B, with the difference in fineness between staple fibers A and B exceeding 3 dtex and the difference in length exceeding 20 mm. The blending ratio of at least one of staple fibers A and B is 10 to 50% by weight, and the combined blending ratio of staple fibers A and B is greater than 50% by weight. The resulting blended yarn exhibits a natural, undulating texture, but suffers from a lack of dry feel and insufficient strength.

[0004] For example, Chinese patent CN105862209A discloses a snowflake slub yarn, which specifically discloses that A roving and B roving are first prepared separately, and then compounded through a bell mouth to form a spun yarn, wherein the cotton fiber length in A roving is 24.5-25.5 mm, and the average length of polyester in B roving is 37.8-38.2 mm, resulting in a snowflake slub yarn with uneven thickness distribution, but there is a problem of lack of dry feel.

[0005] For example, Chinese patent CN108660573A discloses a vortex-spun linen-like yarn and a method for producing the same. Specifically, the linen-like yarn comprises a main core yarn fiber (1) and short fibers, wherein the short fibers are irregularly wrapped around the main core yarn fiber (1), with 80-90% of the short fibers being scattered on the main core yarn fiber (1) and 10-20% of the short fibers being aggregated and stuck to the main core yarn fiber (1). This linen-like yarn has a certain degree of coarseness and fineness in appearance and a dry feel similar to linen fibers, but suffers from insufficient strength. Summary of the Invention

[0006] The object of the present invention is to provide a composite yarn which has a coarse and fine appearance similar to that of a hemp fiber product, a dry and crisp hand feeling, is resistant to pilling, and has high strength.

[0007] Another object of the present invention is to provide a fabric made using the composite yarn.

[0008] The technical solution of the present invention:

[0009] (1) A composite yarn, comprising short fibers and filaments, wherein the fiber length distribution waveform of the short fibers has multiple peaks, the short fibers in the waveform close to the maximum fiber length are short fibers A, and the short fibers in the waveform close to the minimum fiber length are short fibers B, and the difference between the average length of the short fibers A and the average length of the short fibers B is 10 to 64 mm; and Z twist and S twist are alternately distributed in the length direction of the filaments.

[0010] (2) The composite yarn according to (1), wherein the difference between the average length of the short fibers A and the average length of the short fibers B is 20 to 51 mm.

[0011] (3) In the composite yarn described in (1), the average length of the short fibers A is 38 to 89 mm.

[0012] (4) In the composite yarn according to (1) or (3), the weight ratio of the short fibers A to the short fibers B is 0.6 to 9.0:1.

[0013] (5) In the composite yarn described in (1) or (3), the difference between the maximum length and the minimum length of the short fibers B is 15 to 25 mm.

[0014] (6) In the composite yarn according to (1) or (3), the fiber length distribution waveform of the short fibers has three or more peaks.

[0015] (7) In the composite yarn described in (6), the total amount of the short fibers A and B accounts for 50 to 95 wt% of all the short fibers.

[0016] (8) The composite yarn according to (1) or (3), wherein the number of +50% thick places in the composite yarn is 800 to 8000 per km.

[0017] (9) A fabric containing the composite yarn as described in (1) in an amount of more than 30 wt% of the entire fabric.

[0018] (10) The fabric as described in (9), wherein the coefficient of dynamic friction is 0.5 to 1.0.

[0019] The present invention makes the short fibers in the composite yarn have a specific distribution, and uses filaments with alternating Z twist and S twist in the length direction. Without equipment modification, a composite yarn with a coarse and fine appearance similar to that of linen fiber products, a dry feel, anti-pilling and high strength can be obtained. Fabrics made from such composite yarns can be widely used in the production of sportswear, casual wear, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a diagram of fiber length distribution. DETAILED DESCRIPTION

[0021] The composite yarn of the present invention is composed of staple fibers and filaments, wherein the fiber length distribution waveform of the staple fibers has multiple peaks, as shown in Figure 1. The staple fibers within the complete waveform near the maximum fiber length (the waveform on the rightmost side of Figure 1) are staple fibers A, and the staple fibers within the complete waveform near the minimum fiber length (the waveform on the leftmost side of Figure 1) are staple fibers B. The complete waveform described above refers to a complete waveform that includes the peak (the apex of the waveform) and the two troughs (the lowest points of the waveform) adjacent to the peak. Figure 1 shows a waveform diagram of three separate waveforms. When two waveforms are connected, the staple fibers corresponding to the troughs are classified within the waveform with the larger fiber length to the right. If the number of staple fibers in the rightmost complete waveform accounts for less than 19% of the total number of fibers, several consecutive complete waveforms on the rightmost side are selected until the number of staple fibers within these consecutive complete waveforms accounts for more than 19% of the total number of fibers. If the number of staple fibers in the leftmost complete waveform accounts for less than 5% of the total number of fibers, several consecutive complete waveforms on the leftmost side are selected until the number of staple fibers within these consecutive complete waveforms accounts for more than 5% of the total number of fibers.

[0022] If the difference between the average lengths of staple fibers A and B is 10 to 64 mm, the fiber length uniformity is low, and the shorter staple fibers B accumulate in the composite yarn, resulting in an uneven appearance. If the difference is less than 10 mm, the fiber length uniformity is high, equivalent to a staple fiber with a single wavy length distribution, resulting in a smoother composite yarn surface with less pronounced coarse and fine details. If the difference is greater than 64 mm, staple fibers A cannot fully bind the shorter staple fibers B, resulting in a large number of thick sections and a reduced linen-like effect. This also increases the hairiness of the composite yarn, which in turn affects the fabric's resistance to pilling. To achieve a composite yarn with a distinct coarse and fine detail appearance, a linen-like effect, and good pilling resistance, the difference between the average lengths of staple fibers A and B is preferably 20 to 51 mm.

[0023] The present invention does not impose any particular restrictions on the material, fineness, cross-sectional shape, or color of staple fibers A and B; they may be the same or different. Examples of staple fibers A and B include synthetic fibers such as polyester, polyamide, and polyacrylonitrile; regenerated cellulose fibers such as viscose and cuprammonium; and natural fibers such as cotton, hemp, and wool. The synthetic fibers may have a cross-sectional shape, such as a circular cross-sectional shape, a Y-shaped cross-sectional shape, a triangular cross-sectional shape, a flat cross-sectional shape, a peanut cross-sectional shape, or an octyl leaf cross-sectional shape. The fibers may be single fibers, core-sheath composite fibers, or island-in-the-sea composite fibers.

[0024] The filaments described herein, which alternately have Z-twist and S-twist patterns along their length, can be either fused or non-fused filaments. When the filaments are fused, the twist directions of the alternating untwisted portions (Z-twist or S-twist) and untwisted portions (S-twist or Z-twist) along their length are opposite. The untwisted portions are fused, forming a concave structure within the fabric.

[0025] When the filaments are non-fused filaments, the alternating Z-twist segments and S-twist segments are all in a non-fused state. In the process of forming composite yarns by Z-twist (or S-twist) twisting of short fiber bundles and filaments, the Z-twist (or S-twist) segments on the filaments are in the same twisting direction, while the S-twist (or Z-twist) segments are in the opposite twisting direction. The twist count of the Z-twist (or S-twist) segments in the same twisting direction will increase as the composite twisting proceeds, and the filaments of these Z-twist (or S-twist) segments will become denser; the S-twist (or Z-twist) segments in the opposite twisting direction will be partially untwisted under the action of reverse twisting, and these filaments will become more fluffy. The dense Z-twist (or S-twist) segments in the filaments will present a concave structure in the fabric.

[0026] That is, regardless of whether the filaments are fused or non-fused, some of the twisted segments within the filaments form a concave structure in the final fabric. This concave structure isolates the hairiness produced by the staple fibers, effectively reducing the chance of adjacent hairiness tangling and forming balls during friction, thereby improving the fabric's pilling resistance. Furthermore, the concave structure improves breathability and skin separation by reducing the contact area with the skin.

[0027] The fused, untwisted portions of the fused filaments can impart a rough, linen-like feel to the long and short composite yarns. Therefore, the present invention preferably uses fused filaments. The average length of the untwisted portions is preferably 2 to 20 mm, and their proportion in the length direction is preferably 30% to 70%. The length of the untwisted portions and their proportion in the length direction are important factors affecting the fabric's coefficient of kinetic friction. If the length of the untwisted portions is less than 2 mm, or their proportion in the length direction is less than 30%, the fabric's coefficient of kinetic friction is low, and the linen-like feel tends to decrease. If the length of the untwisted portions is greater than 20 mm, or their proportion in the length direction is greater than 70%, the fabric's coefficient of kinetic friction is high, and the feel tends to be stiff.

[0028] The raw materials for the DTY blend are not particularly limited and can be polyester fibers (PET, PBT, PPT, or modified versions thereof) or polyamide fibers. Polyester fibers offer strong bending resistance, the stiffness of natural linen fibers, stable processing, and low cost. Polyamide fibers, on the other hand, have high hygroscopicity, imparting a natural cool feel to fabrics that mimic linen products.

[0029] The fineness of the fused DTY is not particularly limited and can be determined based on the fineness of the composite yarn. The fineness of the fused DTY is preferably 30% to 70% of the fineness of the composite yarn. This is because the fused DTY can be coated on the surface of the composite yarn, preventing the short fibers from falling apart and enhancing the dry, linen-like feel.

[0030] Considering that as the average length of the staple fibers A decreases, the length of friction between the staple fibers A and the length of friction between other fibers decreases, the cohesive force between the fibers decreases, and the yarn strength tends to decrease. On the other hand, as the average length of the staple fibers A increases, the number of single fibers per unit length of the composite yarn decreases, the exposure rate of the fiber ends in the longitudinal direction decreases, the hairiness of the yarn decreases, and the synthetic feel tends to increase. Therefore, in the present invention, the average length of the staple fibers A is preferably 38 to 89 mm.

[0031] The length distribution of the staple fibers A primarily affects the appearance of the yarn. The more concentrated the length distribution of the staple fibers A, the clearer the boundaries between the yarn body and the thick and thin sections, creating an appearance more resembling that of natural hemp yarn. In the present invention, the length distribution of the staple fibers A is preferably within plus or minus 3 mm of the average value.

[0032] As mentioned above, the primary function of staple fiber B is to form thick sections in the composite yarn after accumulation, while the primary function of staple fiber A is to form the main body of the yarn. When the weight ratio of staple fiber A to staple fiber B is too low, the shorter staple fiber B becomes the majority, resulting in a decrease in strength and an increase in hairiness in the composite yarn. When the weight ratio of staple fiber A to staple fiber B is too high, the composite yarn's appearance tends to be flat, and the coarse and fine section effects tend to be reduced. Therefore, the weight ratio of staple fiber A to staple fiber B in the composite yarn is preferably 0.6 to 9.0:1, and more preferably 1.0 to 4.0:1. This allows the distribution of the thick section ratio and thick section length gradient in the composite yarn to more closely resemble that of natural hemp yarn.

[0033] Generally speaking, the actual length of the staple fiber will be discretely distributed before and after the average length. The greater the difference between the maximum length and the minimum length of the fiber, the more discrete the distribution of the fiber length. The smaller the discreteness of the fiber length distribution of the staple fiber B that forms the thick section, the closer the length of the formed thick section is, the easier it is to form repeated stripes on the fabric, and the weaker the natural hemp feeling. Therefore, in order to improve the natural hemp feeling of the fabric, the difference between the maximum length and the minimum length of the staple fiber B is preferably more than 15mm. However, if the discreteness of the fiber length distribution of the staple fiber B is too large, the length deviation of the formed thick section is large, and the difficulty of yarn quality control tends to increase. Therefore, the difference between the maximum length and the minimum length of the staple fiber B is preferably less than 25mm.

[0034] Preferably, the fiber length distribution waveform of the staple fibers has three or more peaks. Figure 1 shows a distribution diagram with three peaks. The staple fibers located within all waveforms between the waveforms containing staple fibers A and B are staple fibers C. The average fiber length of staple fibers C is between that of staple fibers A and B. Like staple fibers B, staple fibers C also form thick sections on the composite yarn after accumulation. Because staple fibers C are shorter than staple fibers B, the length of the thick sections formed by staple fibers C is also shorter than that formed by staple fibers B. The resulting yarn exhibits a gradient in the length of the thick sections, more resembling natural hemp fiber yarn. Where staple fibers C are present, the total amount of staple fibers A and B preferably accounts for 50 to 95% by weight of all staple fibers to ensure uniform dispersion of the gradient distribution of thick section length on the composite yarn.

[0035] Examples of the raw materials for the staple fibers C include synthetic fibers such as polyester, polyamide, and polyacrylonitrile; regenerated cellulose fibers such as viscose and cuprammonium; and natural fibers such as cotton, hemp, and wool. The synthetic fibers may have a circular cross-section, a cross-section, a Y-section, a triangular cross-section, a flat cross-section, a peanut-shaped cross-section, an octyllobate cross-section, or the like. The fibers may be single fibers, core-sheath composite fibers, or island-in-the-sea composite fibers. The staple fibers C may be the same as or different from the staple fibers A or B.

[0036] By distributing staple fibers A and B in the composite yarn and using filaments with alternating Z-twist and S-twist distributions in the length direction, the resulting composite yarn has a distinct appearance of coarse and fine details and good subsequent weaving productivity. The present invention characterizes the composite yarn by the number of +50% thick sections. If the number of +50% thick sections in the composite yarn is less than 800 per km, it indicates that the composite yarn has a relatively uniform appearance and a reduced coarse and fine detail effect. If the number of +50% thick sections in the composite yarn is greater than 8,000 per km, it indicates that the yarn itself has a large number of thick sections, which may cause blockage of the heddle eyelet, reed, or needles during the weaving process, resulting in reduced weaving efficiency. The +50% thick sections here refer to the portion of the yarn where the linear density exceeds 50% of the main yarn body.

[0037] The present invention does not particularly limit the method for producing the composite yarn, and the method may be selected as needed. The composite yarn may be produced by composite twisting a staple fiber bundle made of two or more staple fibers having different average fiber lengths with filaments on a spinning frame (such as a sirofil spinning machine) or a vortex spinning machine. Alternatively, the composite yarn may be produced by first combining two or more staple fiber yarns having different average fiber lengths with filaments on a doubling machine or the like, and then twisting the combined staple fiber yarns on a twisting machine or the like.

[0038] In order to achieve a certain linen-like effect on the fabric, at least 30 wt% of the composite yarn must be used as the raw material. When the composite yarn of the present invention is partially used, other yarns can be selected as needed, such as 100% cotton pure spun yarn, 100% viscose pure spun yarn, polyester / cotton blended yarn, etc.

[0039] The fabric can be a woven fabric or a knitted fabric. Among them, the knitted fabric can be a circular knitted fabric, a flat knitted fabric, or a warp knitted fabric. The structure of the circular knitted fabric and the flat knitted fabric can be a plain stitch, a rib stitch, an interlock stitch, a double-sided stitch, a tuck stitch, a float stitch, a lace stitch, a plated stitch, a half-knit stitch, etc., without special limitation. The warp knitted fabric can be a single-bar warp plain stitch, a single-bar warp satin stitch, a double-bar warp pile stitch, a double-bar warp pile-warp plain stitch, a back pile stitch, a jacquard stitch, etc., without special limitation. In addition, the fabric can be either single-layer or multi-layer, and the aforementioned multi-layer can be a double-layer or more-layer structure.

[0040] Preferably, the fabric of the present invention has a dynamic friction coefficient of 0.5 to 1.0 according to FZ / T 01054-2012 B method, which not only has a certain linen-like feel but also does not affect comfort due to a hard feel.

[0041] In addition, without damaging the fabric, during the finishing process, conventional dyeing, water absorption, and water repellent processing can be carried out. Various processing to impart functions such as UV protection agents, antibacterial agents, deodorants, insect repellents, light storage agents, reflective agents, and negative ion generators can also be carried out.

[0042] The present invention is further described below with reference to the following examples and comparative examples, but the present invention is not limited thereto. The various physical parameters involved in the present invention were tested according to the following methods.

[0043] (1) Fiber length distribution of short fibers in composite yarn

[0044] Three 20cm yarn samples were randomly selected. One of the yarn samples was untwisted from one end and all short fibers were removed. Then, according to the JIS L 1015:2021 standard, the length of each short fiber was measured using a VHX6000 digital microscope (the data accuracy was 1mm). The data was then processed using Excel to produce a waveform diagram of the fiber length distribution as shown in Figure 1. The average length of a certain fiber is the average of the lengths of all fibers in its band (interval). In the waveform diagram, the horizontal axis is the fiber length and the vertical axis is the number of fibers. There are three length intervals for the three types of fiber lengths. For example, the leftmost band is the length distribution interval of short fiber B, the rightmost band is the length distribution interval of short fiber A, and the middle band is the length distribution interval of short fiber C. The average length of all short fibers in each interval is calculated. The same method was used to analyze and calculate the average value of each short fiber in the remaining two yarn samples. Three groups of average length data were obtained for each short fiber, and the average value was taken as the average length of each fiber of the present invention.

[0045] (2) Weight ratio of short fiber A and short fiber B

[0046] Based on the fiber length distribution waveform measured in (1), short fibers A and B were distinguished. Using an AUW220D balance (test accuracy of 0.001 g), short fibers A and B were weighed, respectively, as Ga and Gb. The weight ratio between the two was Ga:Gb. The final result was the average of five tests.

[0047] (3) The difference between the maximum and minimum lengths of short fiber B

[0048] According to the fiber length distribution waveform measured in the previous section (1), the longest fiber length minus the shortest fiber length in the length distribution interval of short fiber B is the difference between the maximum and minimum lengths of short fiber B. The final result is the average of 5 tests.

[0049] (4) +50% of the number of thick places

[0050] The test is performed according to the capacitance method of ISO 16549:2021. The final result is the average of 5 tests.

[0051] (5) Content of composite yarn in fabric

[0052] Randomly mark a complete weave in the fabric and cut a sample of fabric along the edge of the weave loop (if the area of ​​a complete weave is less than 5cm×5cm, cut a sample of fabric of 5cm×5cm), weighing it and recording it as m. Disassemble all the yarns in the sample, select long and short composite yarns with alternating Z twist and S twist on the filaments, and then measure the fiber length of the short fibers in the long and short composite yarns according to test method (1) and make a distribution diagram. The distribution diagram is a waveform distribution diagram with multiple peaks, and the difference in the average length of short fibers A and short fibers B is 10 to 64mm. Then, the long and short composite yarn is the composite yarn defined in claim 1 of the present invention, and its weight is weighed and recorded as m1. The content of composite yarn in the fabric is (m1 / m)×100%.

[0053] Repeat all the above steps starting from sampling for 3 times, and take the average value of the 3 groups of data as the content of the composite yarn of the present invention.

[0054] (6) Dynamic friction coefficient

[0055] The test was conducted according to FZ / T 01054-2012 Method B. The final result was the average of 5 tests.

[0056] (7) Linen-like appearance

[0057] Ten people were selected to evaluate the linen-like appearance of the fabric. If 8-10 people thought the slubby appearance of the fabric was close to that of pure linen, the fabric was rated as excellent; if 5-7 people thought the slubby appearance of the fabric was close to that of pure linen, the fabric was rated as good; if 3-4 people thought the slubby appearance of the fabric was close to that of pure linen, the fabric was rated as fair; if less than 3 people thought the fabric was poor.

[0058] (8) Breaking strength

[0059] The test is carried out according to JIS L1095:2010. The final result is the average of 5 tests.

[0060] (9) Pilling

[0061] The test was conducted according to JIS L 1076:2012 Method A. The final result was the average of 5 tests.

[0062] Example 1

[0063] Three types of short fibers of different average lengths were selected as raw materials, mixed, and sequentially subjected to blowroom, carding, drawing, and roving steps to obtain roving. The drawing step included two drawing passes, a draft ratio of 8, and a basis weight of 16 g / 5 m. The roving step included a draft ratio of 9, a twist factor of 0.8, and a basis weight of 3.5 g / 10 m. The resulting roving was then composited with 110 dtex / 48 f PET fused DTY (Z twist in the fused portion, S twist in the non-fused portion, a 40% fused portion ratio, and alternating Z and S twist distribution in the longitudinal direction, manufactured by Toray Industries, Ltd.) using a sirofil spinning step with a rotational speed of 12,500 rpm, a draft ratio of 38, a twist factor of 4.0, and a filament tension of 16.5 g, to obtain a 30-ne composite yarn of the present invention.

[0064] The length of the short fibers of the composite yarn obtained by testing method (1) was measured and a fiber length distribution diagram was prepared. After analysis and calculation, the composite yarn had short fibers A, short fibers B, and short fibers C, wherein the average length of short fibers A was 38 mm, the average length of short fibers B was 12 mm, the difference between the maximum length and the minimum length (L(Max) - L(Min)) was 20 mm, the average length of short fibers C was 26 mm, and the weight ratio of short fibers A, short fibers B, and short fibers C was 4:4:2.

[0065] The composite yarn prepared above was woven into a grey fabric with a plain weave and a warp density of 68 strands / inch and a weft density of 56 strands / inch. The fabric was then woven through a scouring and bleaching pre-treatment (90°C for 20 minutes) → intermediate setting (180°C for 1.5 minutes) → singeing → dyeing (disperse dye DY401, manufactured by Zhejiang Longsheng Dye Chemical Co., Ltd., 130°C for 30 minutes) → post-finishing (moisture wicking finishing agent HS-TC-18, manufactured by Zhuhai Huada Haohong Chemical Co., Ltd.; dosage 10 owf%, 1 dipping and 1 padding process) → drying (130°C for 2 minutes) → setting (170°C for 1.5 minutes) to obtain the woven fabric of the present invention. The performance parameters are shown in Table 1.

[0066] Examples 2 to 21

[0067] The yarn raw materials were changed and the preparation method was the same as in Example 1. The parameters are shown in Tables 1 and 2.

[0068] Comparative Example 1

[0069] The yarn raw materials were changed and the preparation method was the same as in Example 1. The parameters are shown in Table 2.

[0070] The fiber length distribution diagram of the short fibers in the composite yarn of Comparative Example 1 had only one peak, and the average length of the short fibers was 38 mm. The resulting fabric had unclear coarse and fine details, and had poor linen-like effect and pilling resistance.

[0071] Comparative Example 2

[0072] The yarn raw materials were changed and the preparation method was the same as in Example 1. The parameters are shown in Table 2.

[0073] The staple fiber length distribution diagram shows that the composite yarn of Comparative Example 1 contains both staple fibers A and B. The average length of staple fibers A is 89 mm, while the average length of staple fibers B is 20 mm, a difference of 69 mm. Because staple fibers A cannot completely bind staple fibers B, the resulting thick sections and hairiness caused by staple fibers B increase, resulting in poor pilling resistance and a linen-like appearance.

[0074] Comparative Example 3

[0075] The PET melt-bonded DTY was replaced with a 110 dtex / 48 f ordinary PET-DTY (manufactured by Toray Industries, Ltd.) without alternating S-twist and Z-twist distribution. The rest was the same as in Example 1. The parameters are shown in Table 2.

[0076] Conventional filaments with no alternating twist cannot effectively suppress pilling, resulting in poor pilling resistance. Although linen-like fabrics have a better appearance, they have a low coefficient of dynamic friction and a soft feel.

[0077] Comparative Example 4

[0078] Only staple fibers (no filaments) were used, and ring spinning was employed. The remaining parameters were the same as in Example 1. The fabric had poor pilling resistance. Although the linen-like appearance was superior, the fabric had a low coefficient of dynamic friction and a soft feel.

Claims

1. A composite yarn, composed of staple fibers and filaments, characterized in that: The distribution waveform diagram of the fiber length of the short fibers has multiple peaks. The short fibers within the waveform close to the maximum fiber length are short fiber A, and the short fibers within the waveform close to the minimum fiber length are short fiber B. The difference between the average length of short fiber A and the average length of short fiber B is 10 to 64 mm; on the length direction of the filament, Z twists and S twists are alternately distributed.

2. The composite yarn according to claim 1, wherein: The difference between the average length of short fiber A and the average length of short fiber B is 20 to 51 mm.

3. The composite yarn according to claim 1, characterized in that: The average length of short fiber A is 38 to 89 mm.

4. The composite yarn according to claim 1 or 3, characterized in that: The weight ratio of short fiber A to short fiber B is 0.6 to 9.0:

1.

5. The composite yarn according to claim 1 or 3, characterized in that: The difference between the maximum length and the minimum length of short fiber B is 15 to 25 mm.

6. The composite yarn according to claim 1 or 3, characterized in that: The distribution waveform diagram of the fiber length of the short fibers has more than 3 peaks.

7. The composite yarn according to claim 6, characterized in that: The total amount of short fiber A and short fiber B accounts for 50 to 95 wt% of all short fibers.

8. The composite yarn according to claim 1 or 3, characterized in that: The number of +50% slubs in the composite yarn is 800 to 8000 pieces / km.

9. A fabric containing more than 30 wt% of the composite yarn described in claim 1 in the overall fabric.

10. The fabric according to claim 9, characterized in that: The dynamic friction coefficient of the fabric is 0.5 to 1.0.

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