Multilayer structure staple fiber yarn, method for manufacturing the same, grey fabric, and clothing

Abstract

A multi-layer structure short fiber yarn is a multi-layer structure short fiber yarn (20) composed of a core component fiber (21) and a sheath component fiber (24), and the sheath component fiber (24) contains an inner layer fiber (22) and a surface layer fiber (23), wherein the inner layer fiber (22) of the sheath component fiber (24) is untwisted, the surface layer fiber (23) is wrapped in one direction to bundle the whole, the core component fiber (21) is an elastic multifilament, the sheath component fiber (24) is a blended fiber containing a fur fiber and a short fiber other than the fur fiber, and when the multi-layer structure short fiber yarn (20) is 100 mass%, the mixed ratio of the fur fiber is 5 to 50 mass%. Thus, a multi-layer structure short fiber yarn, a method for manufacturing the same, a gray fabric, and a garment are provided, in which optimization of yarn structure and mixed ratio of fur fiber is sought, frictional strength, weftwise elasticity, and anti-pilling property of the gray fabric are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a multi-layer structure short fiber yarn in which core component fibers are filaments and sheath component fibers are blended short fibers including animal hair fibers, a manufacturing method thereof, a gray fabric, and a clothing. BACKGROUND

[0002] A long-short composite spun yarn in which core component fibers are filaments and sheath component fibers are short fibers can exert respective advantages of filaments and short fibers, and various proposals have been made in the past. In Patent Literature 1, a method of manufacturing a long-short composite spun yarn having a uniform blended structure by opening a multifilament by an electric method and twisting it with a short fiber by a ring spinning method is proposed. In Patent Literature 2, a long-short composite spun yarn in which a filament formed of a conjugate composite fiber yarn is arranged in a core and a short fiber is arranged in a sheath is proposed by a ring spinning method. The present inventors have proposed a long-short composite spun yarn in which a multifilament false twist yarn is arranged in a core and a short fiber bundle is arranged in a sheath by a ring spinning method (Patent Literature 3). In Patent Literature 4, a long-short composite spun yarn using a wrap spinning method is proposed.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Laid-Open No. 2012-102445

[0006] Patent Literature 2: Japanese Patent Application Laid-Open No. 2015-045112

[0007] Patent Literature 3: Japanese Patent No. 6696004

[0008] Patent Literature 4: Japanese Patent Application Laid-Open No. Hei 11-217741 SUMMARY

[0009] PROBLEMS TO BE SOLVED BY THE INVENTION

[0010] However, the above-described prior art has problems in yarn structure and a mixed ratio of animal hair fibers, and has problems in rubbing strength, weft elasticity, and anti-pilling property of a gray fabric.

[0011] The present application has been made to solve the above-described problems of the prior art, and provides a multi-layer structure short fiber yarn in which a yarn structure and a mixed ratio of animal hair fibers are optimized, a gray fabric, and a clothing in which rubbing strength, weft elasticity, and anti-pilling property are improved.

[0012] MEANS FOR SOLVING THE PROBLEMS

[0013] The multi-layer structure short fiber yarn (may also be referred to as a thin yarn, a textile yarn) of the present application is characterized by being a multi-layer structure short fiber yarn composed of a core component fiber and a sheath component fiber, and the sheath component fiber includes an inner layer fiber and a surface layer fiber, wherein the inner layer fiber of the sheath component fiber is untwisted, the surface layer fiber is wrapped in a whole body in one direction, the core component fiber is an elastic multifilament, and the sheath component fiber is a blended fiber including a fur fiber and a short fiber other than the fur fiber, and when the multi-layer structure short fiber yarn is set to 100 mass%, the mixing ratio of the fur fiber is 5 to 50 mass%.

[0014] The manufacturing method of the multi-layer structure short fiber yarn of the present application is characterized by the above-described manufacturing method of the multi-layer structure short fiber yarn, wherein a yarn sliver of a blended fiber including a fur fiber as a sheath component fiber and a short fiber other than the fur fiber is supplied to a drafting zone and drafted, an elastic multifilament as a core component fiber is supplied to an upstream side of a front roller of the drafting zone, and a fiber bundle is made by combining the yarn sliver, the fiber bundle is supplied to a spindle disposed apart from a discharge portion of the front roller, and is wound after false twist is applied by a rotational flow.

[0015] The cloth of the present application is characterized by using the multi-layer structure short fiber yarn. In addition, the clothing of the present application is characterized by including the multi-layer structure short fiber yarn or the cloth.

[0016] Effects of the Invention

[0017] The multi-layer structure short fiber yarn of the present application can provide a multi-layer structure short fiber yarn, a manufacturing method thereof, a cloth, and clothing, which seek optimization of a yarn structure and a mixing ratio of a fur fiber, improve a rubbing strength, a weft direction elasticity, and an anti-pilling property of a cloth. These characteristics are suitable for a business suit, a business uniform, a student uniform, and the like. The manufacturing method of the multi-layer structure short fiber yarn of the present application is a wrap spinning method, and thus can spin at a speed of about 10 to 20 times higher than a ring spinning method, and can be manufactured efficiently and reasonably at a low cost. In addition, a multi-layer structure short fiber yarn having a small number of hairiness and being uniform, and having a high hot water shrinkage can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic perspective view showing a main part of a wrap spinning device for manufacturing a core-sheath structure short fiber yarn of one embodiment of the present application.

[0019] Figure 2 is a schematic perspective view of a core-sheath structure short fiber yarn of one embodiment of the present application.

[0020] Figure 3 is a schematic perspective view of a core-sheath structure short fiber yarn of another embodiment of the present application.

[0021] Figure 4 is a side view photograph of a core-sheath structure short fiber yarn of one embodiment of the present application (magnification 200x).

[0022] Figure 5 is a side view photograph of a core-sheath structure short fiber yarn of another embodiment of the present application (magnification 200x).

[0023] Figure 6 is a textile weave pattern of a fabric of one embodiment of the present application. DETAILED DESCRIPTION

[0024] The multi-layer structure short fiber yarn of the present application is a 3-layer structure composed of a core component fiber and a sheath component fiber, and the sheath component fiber contains an inner layer fiber and a surface layer fiber. With this yarn structure, the yarn structure becomes firm, and the rubbing strength and the anti-pilling property of the gray fabric can be improved. In addition, with this yarn structure, even if the multi-layer structure short fiber yarn or the gray fabric is hot water shrunk in the subsequent process, the elastic filaments of the core component fiber do not fly out to the outside, and it is difficult to form entanglement.

[0025] The core component fiber is an elastic filament. The elastic filament is preferably a conjugate filament or a false twist filament. Thereby, the weft elongation of the gray fabric can be improved. As an example of the conjugate filament, a polyester conjugate filament in which polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) are parallelly compounded and spun is preferable. Such an elastic yarn is, for example, a product name "Lycra T400 Fiber" (Toray Opelontex Co., Ltd. sells). As other elastic yarns, a conjugate yarn of two components of polyethylene terephthalate having different limit viscosities, a conjugate yarn of PET and polybutylene terephthalate (PBT), a conjugate yarn of PTT and PBT, and the like can also be used. Such a polyester conjugate filament is high in chlorine resistance and light resistance as well as the PET filament. The conjugate filament exhibits crimping by hot water treatment of the degree of dyeing temperature, and exhibits stretchability (expansibility). Therefore, it is also called a latent crimping filament.

[0026] The false twist filament is preferably a polyester false twist filament, a nylon false twist filament, a cellulose acetate false twist filament, a cupra false twist filament, a silk false twist filament, and the like. These filaments become higher value-added interlaced yarns when combined with the animal hair fiber. In particular, the polyethylene terephthalate false twist filament is high in strength and has a body, and thus is preferable.

[0027] The sheath component fiber is composed of a blended fiber containing the animal hair fiber and the short fiber other than the animal hair fiber. Among the sheath component fiber, the short fiber located in the inner layer is untwisted, and the short fiber located in the surface layer is twisted in one direction to be a full twist and to wrap the whole. The untwisted short fiber of the inner layer and the full twisted short fiber of the surface layer can be different fibers, or the same fiber can be replaced by movement.

[0028] The animal hair fiber can use wool of sheep, i.e., sheep wool (in the case of merino wool, fiber length 30 to 150 mm), wool of a goat, i.e., cashmere (fiber length 100 to 300 mm), cashmere (fiber length 40 to 90 mm), wool of a camel, i.e., camel hair (fiber length 50 to 70 mm), alpaca wool (fiber length 100 to 200 mm), paco wool (fiber length 20 to 70 mm), wool of a rabbit, i.e., angora rabbit wool (fiber length 100 to 130 mm), and the like. Among these, sheep wool is preferred because of its general versatility. The sheep wool can be blended with other animal hair fibers. The average fiber length of the animal hair fiber is preferably cut to 20 to 35 mm. When the multi-layer structure fiber yarn is set to 100 mass%, the mixing ratio of the animal hair fiber is 5 to 50 mass%. The mixing ratio of the animal hair fiber is preferably 7 to 45 mass%, and more preferably 10 to 40 mass%. Thereby, a fabric or a knitted fabric having a good hand feeling and warmth can be obtained.

[0029] The sheath component fiber is a blend of the animal hair fiber and a short fiber other than the animal hair fiber. The short fiber other than the animal hair fiber can be any one of a synthetic fiber, a regenerated fiber, and a natural fiber. Preferred are a polyester short fiber, a nylon short fiber, a cellulose acetate short fiber, a cuprammonium short fiber, a silk short fiber, a cotton fiber, a hemp fiber, a rayon fiber, and the like. In particular, the polyester short fiber is preferred because of its high strength and body. The average fiber length of the short fiber other than the animal hair fiber is preferably cut to 20 to 51 mm.

[0030] When the multi-layer structure fiber yarn is set to 100 mass%, the core component fiber is preferably an elastic filament of 10 to 40 mass%, and the sheath component fiber is preferably 60 to 90 mass%. More preferably, the core component fiber is an elastic filament of 15 to 35 mass%, and the sheath component fiber is 65 to 85 mass%. Further preferably, the core component fiber is an elastic filament of 20 to 30 mass%, and the sheath component fiber is 70 to 80 mass%.

[0031] The multi-layer structure fiber yarn of the present application is preferably a wrap fiber yarn from the viewpoint of excellent productivity. The wrap fiber yarn has about 10 to 20 times higher productivity than a ring fiber yarn. In particular, the wrap fiber yarn obtained by a wrap spinning device having one swirl flow nozzle has less hairiness, and the yarn structure becomes firm, so that the rubbing strength and the anti-pilling property of the gray fabric can be improved. In addition, wrap spinning is also called VORTEX spinning.

[0032] The multi-layer structure short fiber yarn of the present application is preferably in the range of 20 to 52 (denier: 500 to 192 dtex) in terms of metric count (single yarn). If it is in the range, it is suitable for business suits, business uniforms, school uniforms, and the like. The multi-layer structure short fiber yarn can be provided as a double yarn of 2 twisted. The metric count of the above double yarn is preferably in the range of 10 to 26 (denier: 1000 to 384 dtex). If it is made into a double yarn, not only the surface of the cloth will be beautiful, but also the strength of the fabric will be high.

[0033] The mass per unit area of the fabric or the knitted fabric of the present application is preferably in the range of 50 to 400 g / m 2 . If it is in the above range, a lighter and better wearing feeling of the clothes can be made. It is further preferably in the range of 100 to 350 g / m 2 , and particularly preferably in the range of 150 to 300 g / m 2 . The fabric weave can be any weave such as plain weave, twill weave (also called surah weave), satin weave, other varied weave, and the like. The knitted fabric is flat knitting, circular knitting, warp knitting, and the like, and the knitted fabric weave can be any weave.

[0034] Hereinafter, the device and the method for manufacturing the core-sheath structure yarn of the present application will be described using the drawings. In the following drawings, the same symbols indicate the same objects. Figure 1 is a perspective view showing the main part of a wrap spinning device 1 of one embodiment of the present application.

[0035] (1) Drafting Process

[0036] The drafting zone 6 of the wrap spinning device 1 is constituted by a pair of front rollers 2, 2', a pair of second rollers 3 having a apron, a pair of third rollers 4, and a pair of back rollers 5. A sliver 7 of a yarn spun by blending a fur fiber as a sheath component fiber and a short fiber other than the fur fiber is supplied from the back rollers 5 through a guide 8 and drafted in the drafting zone 6.

[0037] (2) Combination Process of Core Component Fiber and Cover Component Fiber

[0038] The elastic multifilament 9 as the core component fiber is supplied to the front (upstream side) of the front rollers 2, 2' of the drafting zone 6, and the sliver 7 is combined with the drafted fiber bundle.

[0039] (3) Short Fiber Yarn Forming Process

[0040] The combined core component fiber yarn and the fiber bundle of the sheath component fiber are supplied to the spindle 10 disposed away from the discharge part of the front rollers 2, 2', and a multi-layer structure short fiber yarn 11 is made by applying false twist by rotational flow.

[0041] (4) Winding process

[0042] The obtained multi-layer structure short fiber yarn 11 is taken back by a slub catcher 12, is driven by a winding drum 14 of a winding section 17, and is wound on a package 16 supported by a swing arm 15 by a friction roller 13.

[0043] The textile machine used in the manufacturing method of the present application is sold as "MURATA VORTEX SPINNER" manufactured by Murata Machinery Co., Ltd., for example. The feature is that the yarn speed is 300 to 450 m / min, which is about 10 to 20 times faster than the production speed of a ring spinning machine.

[0044] An example of the multi-layer structure short fiber yarn (cabled short fiber yarn) 20 of the present application is shown in Figure 2 This example is an example in which the multi-layer structure short fiber yarn is set to 100 mass%, and the blending ratio of wool is set to 15 mass%. The core component fiber 21 is an elastic multifilament, and the sheath component fiber 24 is a blended fiber of wool and polyester (PET) short fiber. Wool is present in the inner layer fiber 22 in a large amount, and is in a untwisted state. PET short fiber is present in the surface layer winding fiber 23 in a large amount. The surface layer winding fiber 23 is in a full twist state twisted in one direction, and binds the whole. Thus, the hairiness and the drape are small, and even if the fiber is abraded, it does not fall off, and a firm yarn state is ensured. The one direction in the above means a winding fiber of S twist or a winding fiber of Z twist, and does not mean the same twist angle. The winding fiber of S twist or the winding fiber of Z twist is determined by the direction of the compressed air whirl of the spinning machine of the cabling machine. The multi-layer structure short fiber yarn (cabled short fiber yarn) 20 forms a three-layer structure of the untwisted inner layer fiber 22 and the surface layer winding fiber 23 in the core component fiber 21 and the sheath component fiber 24. By this yarn structure, the yarn strength becomes high. In addition, the inner layer wool is protected by the surface layer PET short fiber, and the damage of the wool can be prevented.

[0045] Another example of the multi-layer structure short fiber yarn (cabled short fiber yarn) 25 of the present application is shown in Figure 3 This example is an example in which the multi-layer structure short fiber yarn 25 is set to 100 mass%, and the blending ratio of wool is set to 35 mass%. Unlike Figure 2 , the inner layer fiber 26 and the surface layer winding fiber 27 of the sheath component fiber 28 form the inner layer fiber 22 and the surface layer winding fiber 23 in a blended fiber state of wool and PET short fiber. 26b is the inner layer wool, 26a is the inner layer PET short fiber, 27b is the surface layer wool, and 27a is the surface layer PET short fiber. The multi-layer structure short fiber yarn also forms a three-layer structure, and thus the yarn strength becomes high. In addition, the surface layer winding fiber is tightly interwoven with wool and PET short fiber, and thus the damage of the wool can be prevented.

[0046] Figure 4 A side view photograph of a core-sheath structure short fiber yarn of one embodiment of the present application (magnification 200x) is a side view photograph when the mixed ratio of wool is set to 15 mass% with respect to 100 mass% of the multi-layer structure short fiber yarn.

[0047] Figure 5 A side view photograph of a core-sheath structure short fiber yarn of another embodiment of the present application (magnification 200x) is an example when the mixed ratio of wool is set to 35 mass% with respect to 100 mass% of the multi-layer structure short fiber yarn.

[0048] From Figures 2 to 5 In summary, the wrapping fibers of the surface layer firmly wrap the core component fibers and the inner layer fibers of the sheath component, which can be said to contribute to the improvement of the rubbing strength, the weft elasticity, and the anti-pilling property of the fabric.

[0049] Figure 6 A weave pattern diagram of one embodiment of the present application is a barathea weave. The warp yarns use one kind of yarn, and the weft yarns are a weave in which two kinds of yarns are alternately beaten up. It is also called a changeable compact pattern fabric.

[0050] Examples

[0051] Hereinafter, the present application will be described in further detail using examples. The present application is not limited to the following examples.

[0052] The measurement methods in the examples and comparative examples of the present application were measured according to JIS or industry standards.

[0053] (Examples 1 to 2)

[0054] 1. Fibers used

[0055] (1) Core component fibers

[0056] As the core component fibers, a polyester conjugate filament in which polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) were composite spun side by side at a ratio of 50:50, trade name "Lycra T400 Fiber" (sold by Toray Opelontex, Inc.), total fineness 83 denier, number of constituent fibers 34, black stock dyeing product was used.

[0057] (2) Sheath component fibers

[0058] The following two kinds of fibers were blended.

[0059] (i) Wool

[0060] Merino wool fiber bundles (20g / m) with an average diameter of 22μm and an average fiber length of 80mm were sawn on all four sides to an average fiber length of 28mm.

[0061] (ii) PET staple fiber

[0062] The product is made of polyethylene terephthalate (PET) with a fineness of 1.56 dtex, four-sided sawn (average fiber length 38 mm), and black solution dyed.

[0063] The wool and PET staple fiber are blended uniformly in the proportions specified in Table 1.

[0064] 2. Production of multi-layered short fiber yarn

[0065] pass Figure 1 The method shown uses polyester conjugated filaments as the core component fiber and fiber bundles (yarns) obtained by blending wool and PET staple fibers as the sheath component fiber. Figure 1 The product shown is "No. 870, MURATA VORTEX SPINNER," manufactured by Murata Machinery Co., Ltd., using a multi-layered wrapped short fiber yarn produced at a speed of 300 m / min. The proportions of each fiber are shown in Table 1. The resulting yarn has a metric count of 36 (278 dtex). When used as a single yarn, this yarn is expressed as 1 / 36.

[0066] (Example 3)

[0067] Except that the metric count of the multi-layered wrapped short fiber yarn is set to 40 (250 dtex), it is manufactured in the same manner as in Example 2. This yarn is expressed as 1 / 40 when used as a single yarn.

[0068] (Comparative Example 1)

[0069] A mixed-ply yarn was produced by combining ring-spun staple fiber yarn of 60 count (167 dtex) with polyester conjugated filament (trade name "Lycra T400 Fiber," sold by Toray Opelontex) spun from PET and PTT in a 50:50 ratio, with a total fineness of 83 dtex and 34 strands. The yarn was then twisted using a twisting machine to produce a black solution-dyed product. The proportions of each fiber are shown in Table 1. This yarn is approximately 40 count (250 dtex).

[0070] The above conditions and results are summarized in Table 1. In Table 1, the shrinkage rate (%) after hot water treatment is calculated using the following formula. The hot water treatment is performed by immersion in hot water at 100°C for 20 minutes.

[0071] Hot water shrinkage rate (%) = [(L1-L2) / L1] × 100

[0072] L1: Yarn length before hot water treatment

[0073] L2: Yarn length after hot water treatment

[0074] Table 1

[0075] Example 1 Example 2 Example 3 Comparative Example 1 Type of yarn Wrapped staple fiber yarn Wrapped staple fiber yarn Wrapped staple fiber yarn Plied twisted yarn Core component conjugated filament (mass %) 30 30 33.3 33.3 Sheath component wool (mass %) 15 35 20 20 Sheath component PET staple fiber (mass %) 55 35 46.7 46.7 Decitex 1 / 36 1 / 36 1 / 40 1 / 40 Number of hairs of 1 m or more 55.9 84.9 121.9 144.0 Breaking strength before hot water treatment (g) 639.7 557.3 544.2 571.3 Breaking elongation before hot water treatment (%) 14.1 15.0 15.4 20.2 Breaking strength after hot water treatment (g) 602.4 494.7 526.5 496.0 Breaking elongation after hot water treatment (%) 19.2 19.1 20.3 20.3 Hot water shrinkage (%) 12.8 14.0 15.0 7.7 Appearance photograph Figure 4 Figure 5 - -

[0076] As is clear from Table 1, the multi-layer structure staple fiber yarns (cabled staple fiber yarns) of Examples 1 to 3 have less hairiness of 1 mm or more than the ply-twisted yarn of Comparative Example 1, are uniform yarns, and have high hot water shrinkage.

[0077] (Example 4)

[0078] A fabric was produced using the following yarns.

[0079] (1) Weft Yarn 1

[0080] The multi-layer structure staple fiber yarn of Example 3 was used.

[0081] (2) Weft Yarn 2

[0082] A cabled staple fiber yarn was produced using a blended sliver of the wool and PET staple fiber used in the sheath component fiber of Example 1, using the same spinning device as in Example 1. The cabled staple fiber yarn was 30 mass% wool and 70 mass% PET staple fiber, and had a metric count of 40 (250 dtex).

[0083] (3) Warp Yarn

[0084] A ring-spun staple fiber yarn double yarn having the same mass ratio as the above weft yarn 2 and a metric count of 80 (125 dtex) was used.

[0085] (4) Production of Fabric

[0086] A fabric of the barathea shown in Fig. 1 was produced using the warp yarn 1, weft yarn 1, and weft yarn 2, using an arrow loom. Figure 6 The obtained fabric was dyed using an acid dye for dyeing wool, was immersed in hot water at 100°C for 45 minutes and dyed while being heated from room temperature (25°C) to 100°C over 75 minutes, and was then washed.

[0087] (Comparative Example 2)

[0088] As the weft yarn 1, the ply-twisted yarn of Comparative Example 1 was used. Other than this, the same as in Example 4.

[0089] The above conditions and results are summarized in Table 2.

[0090] Table 2

[0091]

[0092] As is clear from Table 2, the fabric base cloth of Example 4 has high rubbing strength, weft elasticity and anti-pilling properties.

[0093] Industrial applicability

[0094] The base cloth made of the multi-layer structure staple fiber yarn of the present application is suitable for business suits, business uniforms, school uniforms, etc. In addition, it is also suitable for socks, gloves, complete clothes, etc.

[0095] Explanation of symbols

[0096] 1 Package wrapping spinning device

[0097] 2, 2' Front roller

[0098] 3 Second roller

[0099] 4 Third roller

[0100] 5 Rear roller

[0101] 6 Draft zone

[0102] 7 Yarn

[0103] 8 Guide

[0104] 9 Elastic multifilament

[0105] 10 Spindle

[0106] 11 Multi-layer structure staple fiber yarn

[0107] 12 Clearer

[0108] 13 Rubbing roller

[0109] 14 Winding drum

[0110] 15 Cradle arm

[0111] 16 Package

[0112] 20, 25 Multi-layer structure staple fiber yarn

[0113] 21 Core component fiber

[0114] 22, 26 Inner layer fiber

[0115] 23, 27 Winding fiber

[0116] 24, 28 Sheath component fiber

[0117] 26b Inner layer wool

[0118] 26a Inner layer PET staple fiber

[0119] 27b wool of the surface layer

[0120] 27a PET staple fibers of the surface layer

Claims

1. A multi-layered staple fiber yarn, characterized by, It is a multi-layer structure short fiber yarn composed of core component fibers and sheath component fibers, and the sheath component fibers include inner layer fibers and surface layer fibers, wherein In the sheath component fibers, the short fibers in the inner layer are untwisted, the short fibers in the surface layer are S-twisted or Z-twisted and are twisted into a full twist in one direction to bundle the whole, The core component fibers are elastic filaments selected from at least one of the group consisting of conjugate filaments and false twist filaments, The sheath component fibers are blended fibers including animal hair fibers and short fibers other than animal hair fibers, When the multi-layer structure short fiber yarn is taken as 100 mass%, the mixed ratio of the animal hair fibers is 5 to 50 mass%, The average fiber length of the animal hair fibers is 20 to 35 mm, The animal hair fibers are wool, the short fibers other than animal hair fibers are polyester short fibers, the wool is more present in the inner layer fibers, and the polyester short fibers are more present in the surface layer fibers.

2. The multilayered staple yarn according to claim 1, wherein, When the multi-layer structure short fiber yarn is taken as 100 mass%, the core component fibers are 10 to 40 mass%, and the sheath component fibers are 60 to 90 mass%.

3. The multilayered staple yarn according to claim 1 or 2, wherein, The single yarn of the multi-layer structure short fiber yarn is in the range of 20 to 52 gauge in metric count and 500 to 192 decitex in fineness.

4. The multilayered structure staple yarn according to claim 1 or 2, wherein, The average fiber length of the polyester short fibers is 20 to 51 mm.

5. A method of manufacturing a multi-layered staple fiber yarn, characterized by, It is a manufacturing method of the multi-layer structure short fiber yarn according to any one of claims 1 to 4, wherein A yarn sliver of blended fibers including animal hair fibers and polyester short fibers as sheath component fibers is supplied to a drafting zone and is drafted, Elastic filaments as core component fibers are supplied to the upstream side of a front roller of the drafting zone, are combined with the yarn sliver to make a fiber bundle, The fiber bundle is supplied to one spindle disposed away from the discharge part of the front roller, is given false twist by a cyclone flow, and is wound.

6. A gray cloth including the multi-layer structure short fiber yarn according to any one of claims 1 to 4.

7. Clothing including the multi-layer structure short fiber yarn according to any one of claims 1 to 4 or including the gray cloth according to claim 6.

8. Use of the multi-layer structure short fiber yarn according to any one of claims 1 to 4 or the gray cloth according to claim 6 in business suits, business uniforms, school uniforms, socks, gloves, and complete clothing.

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