Textiles and textile products

Abstract

To provide a fabric, which includes a core-sheath type conjugated yarn and is excellent in elongation recovery property, soft feeling, resilience, and uneven grandrelle appearance, and a fiber product.SOLUTION: A fabric includes a core-sheath type conjugated yarn. A core yarn of the conjugated yarn is a conjugated yarn having single fiber fineness of 1.3 dtex or more. A sheath yarn is polytrimethylene terephthalate non-crimped yarn. At least either one surface of the fabric has uneven grandrelle appearance.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a fabric containing a core-sheath type composite yarn, which has excellent elongation recovery properties, a soft texture, resilience, and an excellent moire appearance with unevenness.

Background Art

[0002] Conventionally, stretch fabrics using a composite yarn with a conjugate yarn as the core yarn have been proposed (for example, Patent Document 1). However, although such fabrics are excellent in stretchability, they are still not satisfactory in terms of appearance.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a fabric and a fiber product containing a core-sheath type composite yarn, which have excellent elongation recovery properties, a soft texture, resilience, and an excellent moire appearance with unevenness.

Means for Solving the Problems

[0005] As a result of intensive studies to achieve the above problems, the present inventor has completed the present invention. Thus, the following invention is provided. 1. A fabric containing a core-sheath type composite yarn, wherein the core yarn of the composite yarn is a conjugate yarn having a single fiber fineness of 1.3 dtex or more, and the sheath yarn is a non-crimped polytrimethylene terephthalate yarn. 2. The fabric according to 1 above, which exhibits a moire appearance with unevenness on at least one surface of the fabric. 3. The fabric according to 1 or 2 above, wherein the conjugate yarn is formed by joining two components in a side-by-side or eccentric sheath-core manner, and at least one component is one of polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate. 4. A fabric according to any one of items 1 to 3 above, wherein the total fineness of the core yarn is in the range of 30 to 170 dtex. 5. The fabric according to any one of items 1 to 4 above, wherein the composite yarn has an interlace or Taslan® processing with a tangle count of 90 threads / m or less. 6. Fabric weight is 80-300g / m 2 A fabric within the range of any of the above items 1 to 5. 7. A woven fabric according to any of items 1 to 6 above, wherein the woven fabric is a knitted fabric having a density of 40-140 courses / 2.54 cm and 40-90 wales / 2.54 cm. 8. A fabric according to any one of 1 to 7 above, wherein both the core thread and the sheath thread are exposed on at least one of the surfaces of the fabric. 9. Any textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing care clothing, work clothes, car seat upholstery, and bedding, made using any of the fabrics described in 1 to 8 above. [Effects of the Invention]

[0006] According to the present invention, a fabric containing a core-sheath type composite yarn can be obtained, which has excellent stretch recovery, a soft texture, resilience, and a heathered appearance with a textured feel. [Modes for carrying out the invention]

[0007] Embodiments of the present invention will be described in detail below. First, the fabric of the present invention includes a core-sheath type composite yarn. Such a composite yarn includes a core yarn and a sheath yarn, wherein the core yarn is a conjugate yarn (a composite fiber consisting of two or more components) with a single fiber fineness of 1.3 dtex or more (more preferably 1.4 to 3.5 dtex), and the sheath yarn is a non-crimped polytrimethylene terephthalate yarn.

[0008] Here, if the single fiber fineness of the core yarn is less than 1.3 dtex, the coil-shaped crimp of the conjugate yarn on the surface of the fabric may not be sufficiently formed, which is undesirable. Furthermore, the total fineness of the core yarn is preferably in the range of 30 to 170 dtex. If the total fineness is less than 30 dtex, the coil-shaped crimp may not be formed sufficiently, potentially reducing the texture. Conversely, if it is greater than 170 dtex, the coil-shaped crimp may not be formed sufficiently, potentially resulting in a stiff texture.

[0009] The polymers forming the core thread (conjugate thread) are preferably polyester or aliphatic polyamides (such as nylon 6 and nylon 66). Among these, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, and polyester copolymerized with a third component are more preferably exemplified. In particular, it is especially preferable that the two components are joined in a side-by-side or eccentric sheath-core configuration, and that at least one of the components is one of polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate. In particular, combinations of polyethylene terephthalate and polytrimethylene terephthalate, and combinations of polytrimethylene terephthalate and polytrimethylene terephthalate with different intrinsic viscosities are preferred.

[0010] The polyester may be a materially recycled or chemically recycled polyester. Furthermore, it may be a polyester obtained using a catalyst containing specific phosphorus and titanium compounds, as described in Japanese Patent Publication No. 2004-270097 and Japanese Patent Publication No. 2004-211268. The polymer may contain, as necessary and within the limits that do not impair the objectives of the present invention, one or more of the following: a pore-forming agent, a cationic dyeable agent, a color-inhibiting agent, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a hygroscopic agent, and inorganic fine particles. In particular, it is preferable that the matting agent is contained in an amount of 0.1% by weight or more (more preferably 0.3 to 2.0% by weight) relative to the weight of the polymer, as this improves opacity. Specifically, semi-dull polyester, full-dull polyester, and cationic dyeable polyester are preferred. It is preferable that the polyester contains a cationic dyeable agent (such as an ester-forming sulfonic acid metal salt compound), as this adds antibacterial and deodorizing properties when treated with acid, as described in International Publication No. 2011 / 048888.

[0011] Furthermore, the sheath yarn is a non-crimped yarn made solely of polytrimethylene terephthalate. If the sheath yarn is a crimped yarn such as a conjugate yarn or a false-twist crimped yarn, a bulge will occur due to the crimping, and the coiled crimp of the core yarn will become embedded in this bulge, making it difficult for it to appear on the surface of the fabric, which is undesirable.

[0012] The method for manufacturing the fabric of the present invention involves first preparing a conjugate yarn for the core and a non-crimped polytrimethylene terephthalate yarn for the sheath. In this case, when forming a core-sheath structure with the composite yarn, it is preferable that the boiling water shrinkage rate of the core yarn is greater than that of the sheath yarn.

[0013] Next, the core yarn and sheath yarn are brought together and a composite yarn is obtained by an air-blending method such as interlacing or Taslan® processing. In particular, it is preferable that the interlacing or the like is performed with an entanglement count of 90 threads / m or less (more preferably 10 to 90 threads / m, and especially preferably 30 to 90 threads / m). If the entanglement count is greater than 90 threads / m, the degree of freedom of the unentangled parts decreases, and the coil-shaped crimp of the core yarn does not appear sufficiently on the surface of the fabric, which may result in a fabric that does not have the desired stretch recovery properties, a soft texture, resilience, and a heathered appearance with unevenness.

[0014] Next, a fabric is obtained by knitting or weaving using the composite yarn, and then dyeing or sweat-absorbing processing is applied as appropriate to obtain the fabric. Due to the heat history of dyeing and other processing, the core yarns (conjugate yarns) contained in the composite yarn shrink, becoming a composite yarn with a core-sheath structure, and the core yarns (conjugate yarns) also develop a coil-like crimp.

[0015] Here, the fabric may be constructed using only the composite yarn, or it may be constructed using the composite yarn and other yarns. In this case, the other yarns are not particularly limited and may be any of the following: uncurled yarn, false-twisted crimped yarn, latent crimped yarn, spun yarn, etc.

[0016] While there are no specific restrictions on the weight of the fabric, considering the desired soft texture and intended use, 80-300g / m is generally recommended. 2 This is preferable. The weight of the fabric should be 80g / m. 2 If the weight is less than 300g / m, the burst strength and other properties may decrease for shirt use. 2 If it exceeds that, the garment may become too heavy.

[0017] The texture of the fabric is not particularly limited and can be either a knitted fabric or a woven fabric. For example, knitted fabrics with knitting textures such as天竺, ニットミス, スムース, フライス, 鹿の子, 添え糸編, デンビー, ハーフ, etc., or woven fabrics with weaving textures such as plain weave, twill weave, satin, etc. are exemplified, but not limited thereto. The number of layers may be single layer or multiple layers of two or more. In particular, a knitted fabric having a density in the range of 40 - 140 courses / 2.54 cm and 40 - 90 wales / 2.54 cm is preferred in terms of elongation recovery, soft and plump texture, and resilience. If the density of the knitted fabric is less than the above range, the texture will be soft but the recovery may decrease. Also, if the density of the knitted fabric is greater than the above range, the texture will become hard and the extensibility may also decrease.

[0018] In the thus obtained fabric, due to the heat history such as dyeing, the core yarn (conjugate yarn) contained in the composite yarn shrinks to form a composite yarn with a core - sheath structure, and the core yarn (conjugate yarn) exhibits coiled crimp. Also, on at least one side (preferably both sides) of the front and back of the fabric, both the core yarn and the sheath yarn are randomly exposed, presenting a nubby appearance. In particular, it presents a nubby appearance with a sense of unevenness, which is more excellent than the conventional nubby appearance. Furthermore, it has excellent elongation recovery, a soft texture, and excellent resilience.

[0019] Next, the fiber product of the present invention is any fiber product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing clothing, work clothing, car seat skin materials, and bedding, which is made using the above - mentioned fabric. Since such a fiber product uses the above - mentioned fabric, it is excellent in elongation recovery, soft texture, resilience, and nubby appearance with a sense of unevenness.

Examples

[0020] Next, the present invention will be described in detail with examples, but the present invention is not limited by these. Each physical property in the examples was measured by the following methods. (1) Intrinsic viscosity The measurement was performed at 35°C using orthochlorophenol as the solvent. (2) Eyes Measurements were taken according to JIS L1018-1998 6.4. (3) Confounding number Measurements were taken according to JIS L1013-2021 8.15. (4) Textured wood grain appearance The fabric was placed on a flat surface, and the presence or absence of a textured, heathered appearance was determined by visual inspection. (5) Fineness The measurement was performed according to JIS L1013-2021 8.3.1 Correct fineness.

[0021] [Example 1] As the core yarn, a side-by-side conjugate yarn (SD84dtex / 36fil, single fiber fineness 2.3dtex) was used, which was a composite of polytrimethylene terephthalate with an intrinsic viscosity of 1.31 and polyethylene terephthalate with an intrinsic viscosity of 0.52 in a weight ratio of 50:50. As the sheath yarn, a polytrimethylene terephthalate yarn (SD56dtex / 36fil, single fiber fineness 1.6dtex) with an intrinsic viscosity of 1.31 was used. The core yarn and sheath yarn were held together and interlaced with an overfeed rate of 1.5% to obtain a composite yarn with an entanglement number of 69 entanglements / m.

[0022] Next, a 28-gauge circular knitting machine was used to obtain a circular knit fabric made from 100% of the resulting composite yarn in a jersey knit structure (71 courses / 2.54cm, 48 wales / 2.54cm). The obtained circular knit fabric was dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes, and then subjected to a dry heat final set at a temperature of 160°C for a time of 1 minute. The resulting knitted fabric exhibited excellent stretch recovery, a soft texture, resilience, and a textured, heathered appearance (both core and sheath threads were randomly exposed on both sides of the fabric). The evaluation results are shown in Table 1.

[0023] [Example 2] As the core yarn, a side-by-side conjugate yarn (SD56dtex / 36fil, single fiber fineness 1.6dtex) was used, which was a composite of polytrimethylene terephthalate with an intrinsic viscosity of 1.31 and polyethylene terephthalate with an intrinsic viscosity of 0.52 in a weight ratio of 50:50. As the sheath yarn, a polytrimethylene terephthalate yarn (SD84dtex / 36fil, single fiber fineness 2.3dtex) with an intrinsic viscosity of 1.31 was used. The core yarn and sheath yarn were held together and interlaced with an overfeed rate of 1.5% to obtain a composite yarn with an entanglement number of 63 entanglements / m.

[0024] Next, a 28-gauge circular knitting machine was used to obtain a circular knit fabric made from 100% of the resulting composite yarn in a jersey knit structure (59 courses / 2.54cm, 51 wale / 2.54cm). The obtained circular knit fabric was dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes, and then subjected to a dry heat final set at a temperature of 160°C for a time of 1 minute. The resulting knitted fabric exhibited excellent stretch recovery, a soft texture, resilience, and a textured, heathered appearance (both core and sheath threads were randomly exposed on both sides of the fabric). The evaluation results are shown in Table 1.

[0025] [Example 3] As the core yarn, a side-by-side conjugate yarn (SD56dtex / 36fil, single fiber fineness 1.6dtex) was used, which was a composite of polytrimethylene terephthalate with an intrinsic viscosity of 1.31 and polyethylene terephthalate with an intrinsic viscosity of 0.52 in a weight ratio of 50:50. As the sheath yarn, a polytrimethylene terephthalate yarn (SD56dtex / 36fil, single fiber fineness 1.6dtex) with an intrinsic viscosity of 1.31 was used. The core yarn and sheath yarn were aligned and interlaced with an overfeed rate of 1.5% to obtain a composite yarn with an entanglement number of 67 entanglements / m.

[0026] Next, a 28-gauge circular knitting machine was used to obtain a circular knit fabric made from 100% of the resulting composite yarn in a jersey knit structure (59 courses / 2.54cm, 52 wales / 2.54cm). The obtained circular knit fabric was dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes, and then subjected to a dry heat final set at a temperature of 160°C for a time of 1 minute. The resulting knitted fabric exhibited excellent stretch recovery, a soft texture, resilience, and a textured, heathered appearance (both core and sheath threads were randomly exposed on both sides of the fabric). The evaluation results are shown in Table 1.

[0027] [Example 4] As the core yarn, a side-by-side conjugate yarn (SD33dtex / 24fil, single fiber fineness 1.4dtex) was used, which was a composite of polytrimethylene terephthalate with an intrinsic viscosity of 1.31 and polyethylene terephthalate with an intrinsic viscosity of 0.52 in a weight ratio of 50:50. As the sheath yarn, a polytrimethylene terephthalate yarn (SD33dtex / 24fil, single fiber fineness 1.4dtex) with an intrinsic viscosity of 1.31 was used. The core yarn and sheath yarn were held together and interlaced with an overfeed rate of 1.5% to obtain a composite yarn with an entanglement number of 78 entanglements / m.

[0028] Next, using a 46-gauge circular knitting machine, a circular knitting machine was obtained that produced a jersey knit fabric (85 courses / 2.54cm, 70 wales / 2.54cm) using 100% of the resulting composite yarn. The resulting circular knitted fabric was dyed using disperse dyes at a temperature of 130°C for 30 minutes, followed by a dry heat final set at a temperature of 160°C for 1 minute. The resulting fabric exhibited excellent stretch recovery, a soft texture, resilience, and a textured, heathered appearance (both core and sheath threads were randomly exposed on both sides of the fabric). The evaluation results are shown in Table 1.

[0029] [Comparative Example 1] Using a 28-gauge circular knitting machine, a circular knitted fabric with a jersey knit structure (43 courses / 2.54cm, 42 wales / 2.54cm) was produced using 100% of the obtained false-twist crimped polyethylene terephthalate yarn (fineness 167 dtex / 144 fil) obtained by the conventional POY·DTY method.

[0030] Next, the knitted fabric was dyed using disperse dyes at a temperature of 130°C for 30 minutes, and then subjected to a dry heat final set at a temperature of 160°C for 1 minute. The resulting knitted fabric had a soft texture, but it lacked stretch recovery, texture, and a heathered appearance, and was poorly resilient. The evaluation results are shown in Table 1.

[0031] [Comparative Example 2] As the core yarn, a side-by-side conjugate yarn (SD56dtex / 36fil) was used, which was a composite of polytrimethylene terephthalate with an intrinsic viscosity of 1.31 and polyethylene terephthalate with an intrinsic viscosity of 0.52 in a weight ratio of 50:50. As the sheath yarn, a general polyethylene terephthalate drawn yarn (SD84dtex / 36fil) was used. The yarns were interlaced with an overfeed rate of 1.5% for the core yarn and 2.0% for the sheath yarn to obtain a composite yarn with an entanglement count of 100 entanglements / m.

[0032] Next, a 28-gauge circular knitting machine was used to obtain a circular knit fabric made from 100% of the resulting composite yarn in a jersey knit structure (68 courses / 2.54cm, 46 wales / 2.54cm). The obtained circular knit fabric was dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes, and then subjected to a dry heat final set at a temperature of 160°C for a time of 1 minute. The resulting knitted fabric exhibited excellent stretch recovery, but lacked texture and a heathered appearance, and was inferior in softness and resilience. The evaluation results are shown in Table 1.

[0033] [Table 1] [Industrial applicability]

[0034] According to the present invention, fabrics and textile products are provided that have excellent stretch recovery, a soft texture, resilience, and a heathered appearance with a textured surface, and their industrial value is extremely high.

Claims

1. A fabric comprising a core-sheath type composite yarn, wherein the core yarn of the composite yarn is a conjugate yarn with a single fiber fineness of 1.3 dtex or more, the sheath yarn is a polytrimethylene terephthalate non-crimped yarn, and both the core yarn and the sheath yarn are randomly exposed on at least one of the surfaces of the fabric.

2. The fabric according to claim 1, wherein the conjugate yarn is formed by joining two components in a side-by-side or eccentric sheath-core manner, and at least one component is one of polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate.

3. The fabric according to claim 1, wherein the total fineness of the core threads is in the range of 30 to 170 dtex.

4. The fabric according to claim 1, wherein the composite yarn is interlaced or Taslan® processed with a tangle count of 90 yarns / m or less.

5. Fabric weight: 80-300 g / m ２ The fabric according to claim 1, which is within the range of [specified range].

6. The fabric according to claim 1, wherein the fabric is a knitted fabric having a density of 40 to 140 courses / 2.54 cm and 40 to 90 wales / 2.54 cm.

7. A textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing care clothing, work clothes, car seat upholstery material, and bedding, made using the fabric described in any one of Claims 1 to 6.

Images