Elastic yarn with skin-core structure and jean fabric

Abstract

The utility model relates to an elastic yarn with a skin-core structure and a jean fabric, the elastic yarn with the skin-core structure comprises a yarn core body, a middle yarn layer and an outer skin layer, the surface of the yarn core body is coated with the middle yarn layer, and the surface of the middle yarn layer is coated with the outer skin layer; the yarn core body is made of spandex stretch yarn or Lycra stretch yarn; the middle yarn layer is a pure wool fiber yarn layer or a wool fiber blended yarn layer; and the outer skin layer is an acrylic fiber yarn layer. The acrylic fibers of the outer skin layer wrap the wool fibers in the middle yarn layer, so that the advantage of heat retention of the wool fibers is reserved, and the problem that the wool fibers make contact with the skin to cause scratchiness is solved; the acrylic fibers of the outer skin layer can enable the fabric to have better comfort; furthermore, the spandex yarn or the Lycra stretch yarn is adopted as the yarn core body of the elastic yarn of the skin-core structure, enough elasticity can be provided for the fabric, and the use requirement of the jean fabric is met.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a skin-core structured elastic yarn and a denim fabric. Background Art

[0002] As a mainstream fashion, denim fabrics have always been loved by consumers. In autumn and winter, when the temperature is low, ordinary denim fabrics cannot provide sufficient warmth to the human body. In order to improve the warmth retention of fabrics, one technology is to use yarn containing wool fibers to weave denim fabrics, but wool materials will produce an itchy feeling when in contact with the skin, reducing wearing comfort. Utility Model Content

[0003] Based on this, it is necessary to provide a denim fabric and a leather-core structured stretch yarn with good warmth retention and low itching.

[0004] The first aspect of the present application provides a core-sheath elastic yarn, comprising a yarn core body, an intermediate yarn layer and an outer skin layer, wherein the intermediate yarn layer is coated on the surface of the yarn core body, and the outer skin layer is coated on the surface of the intermediate yarn layer; the yarn core body is spandex stretch yarn or Lycra stretch yarn; the intermediate yarn layer is a pure wool fiber yarn layer or a wool fiber blended yarn layer; and the outer skin layer is an acrylic fiber yarn layer.

[0005] In the above-mentioned core-sheath structure elastic yarn, the acrylic fiber yarn of the outer skin layer wraps the wool fiber yarn in the middle yarn layer, which not only retains the warmth retention advantage of the wool fiber, but also improves the problem of itching caused by the wool fiber contacting the skin; and the acrylic fiber of the outer skin layer can make the fabric more comfortable; further, using spandex yarn or lycra stretch yarn as the yarn core body of the core-sheath structure elastic yarn can provide sufficient elasticity for the fabric to meet the use requirements of denim fabrics.

[0006] In some embodiments, the middle yarn layer is a blended yarn layer of wool fiber yarn and polyester fiber yarn.

[0007] In some embodiments, the middle yarn layer is a blended yarn layer of wool fiber yarn and cotton fiber yarn.

[0008] In some embodiments, the fineness of the yarn core body is 30D-80D.

[0009] A second aspect of the present application provides a denim fabric, the fabric comprising warp yarns and weft yarns woven together, the weft yarns comprising the above-mentioned core-sheath structure elastic yarn.

[0010] In some embodiments, the warp yarn includes at least one of cotton fiber, viscose fiber, tencel fiber, modal fiber, spandex stretch yarn and polyester fiber.

[0011] In some embodiments, the weft yarn has a count of 8S-24S.

[0012] In some embodiments, the warp yarn has a count of 8S-40S.

[0013] In some embodiments, the twist count of the weft yarn is 70 twists / 10cm-90 twists / 10cm; and / or the twist count of the warp yarn is 40 twists / 10cm-60 twists / 10cm.

[0014] In some embodiments, the weave structure formed by weaving the warp yarns and the weft yarns includes at least one of plain weave, twill weave, satin weave, double plain weave and jacquard weave. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of a core-sheath elastic yarn in one embodiment of the present application;

[0017] Figure 2 A schematic diagram of a denim fabric prepared in Example 2 of the present application;

[0018] Figure 3 This is a schematic diagram of the denim fabric prepared in Example 3 of the present application.

[0019] Description of reference numerals: 10, skin-core structure elastic yarn; 11, yarn core body; 12, middle yarn layer; 13, outer skin layer;

[0020] 21, first weft yarn; 22, second weft yarn; 31, first warp yarn; 32, second warp yarn. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below, and preferred embodiments of the utility model are given. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. It should be understood that the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] See also Figure 1 In one embodiment of the present application, a sheath-core elastic yarn 10 is provided.

[0025] A core-sheath elastic yarn 10 according to one embodiment of the present application comprises a core yarn body 11, an intermediate yarn layer 12 and an outer skin layer 13, wherein the intermediate yarn layer 12 is coated on the surface of the core yarn body 11, and the outer skin layer 13 is coated on the surface of the intermediate yarn layer 12; the core yarn body 11 is spandex stretch yarn or lycra stretch yarn; the intermediate yarn layer 12 is a pure wool fiber yarn layer or a wool fiber blended yarn layer; and the outer skin layer 13 is an acrylic fiber yarn layer.

[0026] In the above-mentioned core-sheath structure elastic yarn 10, the acrylic fiber yarn of the outer skin layer 13 wraps the wool fiber yarn in the middle yarn layer 12, which not only retains the warmth retention advantage of the wool fiber yarn, but also improves the problem of itching when the wool fiber yarn contacts the skin; and the acrylic fiber yarn of the outer skin layer 13 can make the fabric more comfortable; further, using spandex yarn or lycra elastic yarn as the yarn core body 11 of the core-sheath structure elastic yarn can provide sufficient elasticity for the fabric to meet the use requirements of denim fabrics.

[0027] In some embodiments, the middle yarn layer 12 is a blended yarn layer of wool fiber yarn and polyester fiber yarn.

[0028] In some embodiments, the middle yarn layer 12 is a blended yarn layer of wool fiber yarn and cotton fiber yarn.

[0029] In some embodiments, the yarn core body 11 in the core-sheath structure stretch yarn 10 is a spandex stretch yarn or a Lycra stretch yarn.

[0030] In some embodiments, the fineness of the yarn core body 11 is 30D-80D. It can be understood that the fineness of the yarn core body 11 can be 30D, 40D, 50D, 60D, 70D or 80D. Further, the fineness of the yarn core body can be a range of values ​​formed by any of the above point values.

[0031] In another embodiment of the present application, a denim fabric is provided, comprising warp yarns and weft yarns woven together. The weft yarns include the above-mentioned core-skin structure elastic yarn 10. It can be understood that the weft yarns in the denim fabric of the present application only contain the above-mentioned core-skin structure elastic yarns, and can also process yarns containing other structures in addition to the core-skin structure yarns. For example, the weft yarns can also contain polyester network yarns.

[0032] In some embodiments, the warp yarns include at least one of cotton fibers, viscose fibers, tencel fibers, modal fibers, cellel fibers, spandex stretch yarns, and polyester fibers. For example, the warp yarns may be one or more of these fibers.

[0033] Furthermore, the warp yarn is cotton fiber yarn, viscose fiber yarn, tencel fiber yarn, modal fiber yarn, spandex stretch yarn, polyester fiber yarn, blended yarn containing any one of the former, or covered yarn containing any one of the former.

[0034] For example, the blended yarn can be a yarn formed by blending cotton fiber and tencel fiber; further, the tencel fiber is cellel fiber, which is a yarn formed by blending cotton fiber and cellel fiber. For example, the coated yarn can be a stretch yarn of polyester network yarn coated with spandex stretch yarn.

[0035] In some embodiments, the count of the weft yarn is 8S-24S. It is understood that the count of the weft yarn can be 8S, 9S, 10S, 11S, 12S, 13S, 14S, 15S, 16S, 17S, 18S, 19S, 20S, 21S, 22S, 23S or 24S. Further, the count of the weft yarn can be a range value formed by any two of the above point values.

[0036] In some embodiments, the count of the warp yarn is 8S-40S. It is understood that the count of the warp yarn can be 8S, 10S, 12S, 14S, 15S, 18S, 20S, 22S, 24S, 25S, 28S, 30S, 32S, 34S, 35S, 38S or 40S. Further, the count of the warp yarn can be a range value consisting of any two of the above point values.

[0037] In some embodiments, the twist number of the weft yarn is 70 twists / 10cm-90 twists / 10cm. It is understood that the twist number of the weft yarn can be 70 twists / 10cm, 72 twists / 10cm, 74 twists / 10cm, 75 twists / 10cm, 76 twists / 10cm, 78 twists / 10cm, 80 twists / 10cm, 82 twists / 10cm, 84 twists / 10cm, 85 twists / 10cm, 86 twists / 10cm, 88 twists / 10cm or 90 twists / 10cm. Further, the twist number of the weft yarn can be a range value consisting of any two of the above point values.

[0038] In some embodiments, the twist count of the warp yarn is 40 twists / 10cm-60 twists / 10cm. It is understood that the twist count of the warp yarn can be 40 twists / 10cm, 42 twists / 10cm, 44 twists / 10cm, 45 twists / 10cm, 46 twists / 10cm, 48 twists / 10cm, 50 twists / 10cm, 52 twists / 10cm, 54 twists / 10cm, 55 twists / 10cm, 56 twists / 10cm, 58 twists / 10cm or 60 twists / 10cm. Further, the twist count of the warp yarn can be a range value consisting of any two of the above point values.

[0039] In some embodiments, the warp yarn in the denim fabric has a machine density of 50 strands / inch to 100 strands / inch. It is understood that the warp yarn in the denim fabric has a machine density of 50 strands / inch, 55 strands / inch, 60 strands / inch, 65 strands / inch, 70 strands / inch, 75 strands / inch, 80 strands / inch, 85 strands / inch, 90 strands / inch, 95 strands / inch or 100 strands / inch. Further, the warp yarn in the denim fabric can be a range value consisting of any two of the above point values. Preferably, the warp yarn in the denim fabric has a machine density of 54 strands / inch to 95 strands / inch.

[0040] In some embodiments, the weft yarn in the denim fabric has a machine density of 40 to 80 strands / inch. It is understood that the warp yarn in the denim fabric has a machine density of 40, 45, 50, 55, 60, 65, 70, 75 or 80 strands / inch. Further, the warp yarn in the denim fabric can be a range value consisting of any two of the above point values. Preferably, the warp yarn in the denim fabric has a machine density of 44 to 72 strands / inch.

[0041] In some embodiments, the weave structure formed by weaving the warp yarns and the weft yarns includes at least one of plain weave, twill weave, satin weave, double plain weave, and jacquard weave.

[0042] In some embodiments, the denim fabric weave adopts 3 / 1 right twill, 3 / 1 right twill+1 / 1 or 6 / 2 right twill.

[0043] In order to make the purpose, technical solution and advantages of the utility model more concise and clear, the utility model is described with the following specific embodiments, but the utility model is by no means limited to these embodiments. The embodiments described below are only preferred embodiments of the utility model, which can be used to describe the utility model and cannot be understood as limiting the scope of the utility model. It should be pointed out that any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0044] In order to better illustrate the present invention, the present invention is further described below in conjunction with the embodiments. The following are specific embodiments.

[0045] Example 1

[0046] The warp yarn of this embodiment is a blended yarn of lyocell fiber and cotton fiber, wherein the ratio of lyocell fiber to cotton fiber is 52:48, the yarn count is 11.5S, and the yarn twist is 52 twists / 10cm. The warp yarn is piece-dyed with indigo dye or sulfur dye.

[0047] The weft yarn adopts a core-sheath structure elastic yarn 10, the outer skin layer 13 is acrylic fiber, and the middle yarn layer 12 is a blend of wool and polyester fiber; in the core-sheath structure elastic yarn 10, the ratio of acrylic fiber to polyester fiber and wool fiber is 40:30:30, the yarn core body 13 is Lycra elastic yarn, the specification of Lycra elastic yarn is 40D, the weft yarn count is 10S, and the weft yarn twist is 71 twists / 10cm.

[0048] Fabric structure and machine process design: the warp and weft yarn density is 60×46, and the fabric structure adopts 3 / 1 right twill.

[0049] The fabric weaving process is: winding, warping, sizing, drawing in, weaving, and finishing. The finishing process is singeing, desizing, skewing, and shrinkage prevention.

[0050] Example 2

[0051] like Figure 2 Schematic diagram of denim fabric shown.

[0052] The warp yarn of this embodiment is biaxially woven, and the first warp yarn 31 is made of pure cotton yarn, the yarn count is 10S, and the yarn twist is 42 twists / 10cm. The first warp yarn 31 is piece-dyed with indigo dye or sulfur dye.

[0053] The second warp yarn 32 is made of polyester network yarn covered elastic yarn, the yarn core is spandex elastic yarn, the elastic yarn fineness is 20D, and the specification of the second warp yarn 32 is 75D (36F).

[0054] The quantity ratio of the first warp yarn 31 and the second warp yarn 32 is 1:1, and the heald drawing is as follows: the heald frames 1.3.5.7 are drawn through the first warp yarn (lower axis), and the heald frames 2.4.6.8 are drawn through the second warp yarn (upper axis).

[0055] The weft yarn 21 adopts a core-sheath structure elastic yarn 10, the outer skin layer 13 is acrylic fiber, and the middle yarn layer 12 is a blend of wool and polyester fibers; in the core-sheath structure elastic yarn 10, the quantity ratio of acrylic fiber to polyester fiber and wool fiber is 40:30:30, the yarn core body 11 is Lycra stretch yarn, the specification of Lycra stretch yarn is 70D, the weft yarn count is 16S, and the weft yarn twist is 86 twists / 10cm.

[0056] Fabric structure and machine process design: the warp and weft yarn density is 95×44, and the fabric structure adopts 3 / 1 right oblique + 1 / 1.

[0057] The fabric weaving process is: winding, warping, sizing, drawing in, weaving, and finishing. The finishing process is singeing, desizing, softening, skewing, and shrinkage prevention. The resulting fabric has elasticity in both the warp and weft directions.

[0058] Example 3

[0059] like Figure 3 Schematic diagram of denim fabric shown.

[0060] The warp yarns in this embodiment are biaxially woven, and the first warp yarn 31 is made of pure cotton plain yarn, the yarn count is 9S, and the yarn twist is 47 twists / 10cm;

[0061] The second warp yarn 32 is made of pure cotton slub yarn, the yarn count is 9S, the yarn twist is 55 twists / 10cm, and the quantity ratio of the first warp yarn 31 to the second warp yarn 32 is 3:1.

[0062] The warp yarn is piece-dyed with indigo dye or sulfur dye. The drawing rule is: AAABAAABAAAB, A is plain yarn, B is slub yarn.

[0063] The weft yarn is made of two kinds of yarns. The first weft yarn 21 is a core-sheath structure stretch yarn 10. The outer skin layer 13 is acrylic fiber, and the middle yarn layer 12 is a blend of wool fiber and polyester fiber. In the core-sheath structure stretch yarn 10, the quantity ratio of acrylic fiber to polyester fiber and wool fiber is 40:30:30; the yarn core body 11 is Lycra stretch yarn, and the specification of Lycra stretch yarn is 40D. The yarn count of the first weft yarn is 10S, and the twist of the first weft yarn is 71 twists / 10cm.

[0064] The second weft yarn 22 is made of polyester interwoven yarn, the yarn specification of the second weft yarn 22 is 300D (576F), the color of the second weft yarn is brown, and the yarn quantity ratio of the first weft yarn 21 to the second weft yarn 22 is 1:1.

[0065] Fabric structure and machine process design: The density of warp and weft yarns is 54×72, and the fabric structure is 6 / 2 right-slant. Two different colors of weft yarns are alternately beaten to make the fabric base present a pattern. The resulting fabric base has a novel appearance and a clear twill texture on the surface.

[0066] The fabric weaving process is: winding, warping, sizing, drawing in, weaving, and finishing. The finishing process is singeing, desizing, skewing, and shrinkage prevention.

[0067] Comparative Example 1

[0068] The warp yarn of this comparative example is a blended yarn of lyocell fiber and cotton fiber, wherein the number ratio of lyocell fiber to cotton fiber is 52:48, the yarn count is 11.5S, and the yarn twist is 52 twists / 10cm. The warp yarn is piece-dyed with indigo dye or sulfur dye.

[0069] The weft yarn adopts ordinary core elastic yarn. The outer covering fiber of the elastic core-spun yarn is a blended yarn of wool fiber and polyester fiber. The quantity ratio of polyester fiber to wool fiber is 70:30. The elastic core is Lycra elastic yarn. The specification of Lycra elastic yarn is 40D. The weft yarn count is 10S and the weft yarn twist is 57 twists / 10cm.

[0070] Fabric structure and machine process design: the warp and weft yarn density is 60×46, and the fabric structure adopts 3 / 1 right twill.

[0071] The fabric weaving process is: winding, warping, sizing, drawing in, weaving, and finishing. The finishing process is singeing, desizing, skewing, and shrinkage prevention.

[0072] Performance Testing

[0073] Weft elastic extensibility and resilience: tested according to the method specified in ASTM D3107.

[0074] Thermal insulation rate: Tested according to the method specified in GB / T 35762-2017, and the thermal insulation rate ≥30 is qualified.

[0075] Itching sensation: The sensation is scored according to the scoring method specified in FZ / T 30005-2009. The total score is 1 point. The higher the score, the more obvious the itching sensation.

[0076] The performance test data of each embodiment and comparative example are shown in Table 1.

[0077] Table 1

[0078] Weft elastic extensibility % Weft elastic resilience% Insulation rate % Itchy sensation Example 1 35.6 88.2 31.4 0.3 Example 2 48 92.2 32.8 0.4 Example 3 24 90.2 33.7 0.3 Comparative Example 1 34.8 87.4 30.8 0.7

[0079] From the data in Table 1, it can be seen that the denim fabrics prepared by using the core-skin structure elastic yarn of the present application as the weft yarn in Examples 1-3 have good elasticity, good thermal insulation effect, and low itching. However, in Comparative Example 1, the wool fiber is arranged on the outermost layer of the core-skin structure elastic yarn, and the wool fiber directly contacts the skin, has a high itching feeling, and has a low thermal insulation rate.

[0080] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims, and the description can be used to interpret the content of the claims.

Claims

1. A core-sheath elastic yarn, characterized in that: It includes a yarn core body, an intermediate yarn layer and an outer skin layer, wherein the intermediate yarn layer is coated on the surface of the yarn core body, and the outer skin layer is coated on the surface of the intermediate yarn layer; the yarn core body is spandex stretch yarn or Lycra stretch yarn; the intermediate yarn layer is a pure wool fiber yarn layer or a wool fiber blended yarn layer; the outer skin layer is an acrylic fiber yarn layer.

2. The core-sheath elastic yarn according to claim 1, characterized in that: The middle yarn layer is a blended yarn layer of wool fiber yarn and polyester fiber yarn.

3. The core-skin structure elastic yarn according to claim 1, characterized in that: The middle yarn layer is a blended yarn layer of wool fiber yarn and cotton fiber yarn.

4. The core-sheath elastic yarn according to any one of claims 1 to 3, characterized in that: The fineness of the yarn core body is 30D-80D.

5. A denim fabric, characterized in that: The fabric comprises warp yarns and weft yarns woven together, and the weft yarns comprise the core-sheath structure elastic yarn according to any one of claims 1 to 3.

6. The denim fabric according to claim 5, characterized in that: The warp yarn includes at least one of cotton fiber, viscose fiber, tencel fiber, modal fiber, spandex stretch yarn and polyester fiber.

7. The denim fabric according to any one of claims 5 to 6, characterized in that: The count of the weft yarn is 8S-24S.

8. The denim fabric according to any one of claims 5 to 6, characterized in that: The warp yarn count is 8S-40S.

9. The denim fabric according to any one of claims 5 to 6, characterized in that: The twist number of the weft yarn is 70 twists / 10cm-90 twists / 10cm; and / or the twist number of the warp yarn is 40 twists / 10cm-60 twists / 10cm.

10. The denim fabric according to any one of claims 5 to 6, characterized in that: The weave structure formed by weaving the warp yarns and the weft yarns includes at least one of plain weave, twill weave, satin weave, double plain weave and jacquard weave.

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