Quick-drying fabrics and textile products

Abstract

To provide a fast-drying fabric and textile product having not only fast-drying property but also bulky and soft texture and excellent snagging resistance.SOLUTION: A fast-drying fabric comprises a core-sheath type combined filament yarn. The core part and sheath part of the combined filament yarn are made of multifilament not subjected to a false twist crimping process.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a quick-drying fabric and textile product containing a core-sheath type blended yarn, which not only dries quickly but also has a fluffy, soft feel and excellent anti-snagging properties. [Background technology]

[0002] BACKGROUND ART Conventionally, fabrics using blended yarns that have water absorbency and quick-drying properties have been proposed (for example, Patent Documents 1 and 2). However, it is still not satisfactory in terms of quick drying, fluffy soft feel and snagging resistance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-208932 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-144288 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a quick-drying fabric and textile product containing a core-sheath type blended yarn, which not only dries quickly but also has a fluffy, soft feel and excellent anti-snagging properties. [Means for solving the problem]

[0005] The present inventors have conducted extensive research to achieve the above object, and as a result have completed the present invention.

[0006] Thus, according to the present invention, there is provided a quick-drying fabric comprising a core-sheath type mixed yarn, wherein the core and sheath of the mixed yarn are not subjected to false twist crimping. Made of polyester fiber It is a multifilament The difference in thread length between the core and sheath is 40% or more as measured by the following method. A quick-drying fabric characterized by the above. (Method for measuring thread length difference) The mixed yarn is removed from the fabric, a load of 0.1 cN (0.1 g) × the total fineness (dtex) of the mixed yarn is applied, and the yarn is cut to a length of 5 cm. From the cut mixed yarn, core fiber A (single fiber) and sheath fiber B (single fiber) are removed, and their lengths are measured under a load of 0.1 cN (0.1 g) × the single fiber fineness (dtex). The yarn length difference (%) is calculated using the following formula. Thread foot difference (%)=(LB-LA) / LA×100 Here, LA is the length (cm) of the core fiber A, and LB is the length (cm) of the sheath fiber B.

[0007] In that case, The core is preferably made of a cationic dyeable polyester fiber. The sheath is preferably made of a modified cross-section fiber. In the mixed yarn, both the core and sheath are preferably multifilaments having 20 to 200 filaments. The mixed yarn is preferably subjected to an interlacing process with 30 filaments / m or more.

[0008] In the quick-drying fabric of the present invention, it is preferable that all of the fibers constituting the fabric are multifilament fibers that have not been subjected to false twist crimping. It is also preferable that the fabric is a knitted fabric with a density of 30 to 150 courses / 2.54 cm and 50 to 80 wales / 2.54 cm. It is also preferable that the fabric has an anti-snagging property of Grade 3 or higher. It is also preferable that the fabric has a diffusible residual moisture regain (L0) of 30 minutes or less.

[0009] The present invention also provides a textile product made from the quick-drying fabric, the textile product being selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing care clothing, workwear, car seat covering materials, and bedding. [Effects of the Invention]

[0010] According to the present invention, the fabric contains a core-sheath type blended yarn, which not only dries quickly but also has a fluffy and soft texture. Furthermore, quick-drying fabrics and textile products having excellent anti-snagging properties can be obtained. DETAILED DESCRIPTION OF THE INVENTION

[0011] The embodiments of the present invention will be described in detail below. First, the quick-drying fabric of the present invention contains a core-sheath type mixed yarn, and the core and sheath of the mixed yarn are made of multifilaments that have not been false-twisted or crimped (sometimes called "non-false-twisted yarn"). If false-twisted or crimped yarn is used in the core or sheath of the mixed yarn, this is not preferable as it may reduce the quick-drying properties.

[0012] The mixed yarn preferably has a total fineness in the range of 50 to 150 dtex (more preferably 70 to 130 dtex). If the total fineness of the mixed yarn is smaller than this range, the density of the quick-drying fabric may be reduced, which may make snagging more likely. Conversely, if the total fineness exceeds this range, the texture of the quick-drying fabric may become stiff and the basis weight may become too large.

[0013] The number of filaments in the core and / or sheath of the mixed yarn is preferably within a range of 20 to 200. It is particularly preferred that both the core and sheath have a range of 20 to 200 filaments.

[0014] The function of the sheath in the blended yarn is to first instantly absorb and diffuse sweat generated by the sheath on the skin side, transferring it to the core, and simultaneously transferring and diffusing it to the outer sheath, thereby imparting a suitable volume and soft feel to the fabric. In order to enhance the absorption and diffusion effect and achieve a soft feel, the single fiber fineness of the sheath is preferably 3.0 dtex or less (more preferably 0.001 to 1.3 dtex). The cross-sectional shape of the fibers constituting the sheath is not particularly limited, but a modified cross section is preferred. The modified cross section may be triangular, flat, Y-shaped, W-shaped, cross-shaped, or any other shape. In particular, a flat cross section is preferred in terms of absorbency, quick-drying properties, and a soft, volumetric feel, and a flat cross section with a constricted portion is more preferred than a flat cross section.

[0015] On the other hand, the function of the core is to instantly absorb and diffuse moisture absorbed and diffused by the sheath on the skin side by utilizing capillary action and transfer it to the outer sheath. From the viewpoint of absorbency and diffusibility, the single fiber fineness of the core is preferably 0.5 dtex or more, more preferably in the range of 0.9 to 2.2 dtex. If the single fiber fineness is smaller than the above range, the absorbency and feel will be good, but the quick-drying properties may be insufficient. On the other hand, if the single fiber fineness is larger than the above range, the feel may become hard, making it difficult to obtain the desired quick-drying fabric. The cross-sectional shape of the fibers constituting the core is not particularly limited, and may be either a modified cross section as described above or a round cross section.

[0016] The polymer forming the fibers in the core and / or sheath is preferably polyester or aliphatic polyamide (e.g., nylon 6, nylon 66). Among these, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, and polyester copolymerized with a third component are particularly preferred. Such polyesters may be material-recycled or chemically recycled polyesters. Furthermore, polyesters obtained using catalysts containing specific phosphorus compounds and titanium compounds, as described in JP-A Nos. 2004-270097 and 2004-211268, may also be used. The polymer may optionally contain one or more of the following within the scope of the present invention: a micropore-forming agent, a cationic dye-dyeable agent, a coloring inhibitor, a heat stabilizer, a fluorescent brightener, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles. In particular, a matting agent in an amount of 0.1% by weight or more (more preferably 0.3 to 2.0% by weight) based on the weight of the polymer is preferred for improved transparency resistance. Specifically, semi-dull polyester, full-dull polyester, and cationic dyeable polyester are preferred. When a cationic dye dyeable agent (such as an ester-forming sulfonic acid metal salt compound) is contained in the polyester, antibacterial and deodorizing properties can be imparted by acid treatment as described in WO 2011 / 048888.

[0017] In the method for producing the quick-drying fabric of the present invention, first, a non-false-twisted core yarn and a non-false-twisted sheath yarn are prepared. In this process, in order to form the blended yarn into a core-sheath structure, it is necessary that the boiling water shrinkage rate of the core is greater than that of the sheath. For example, a non-false-twisted core yarn is preferably a yarn obtained by cold drawing polyester undrawn yarn (UDY) or polyester partially oriented yarn (POY), as these have a high boiling water shrinkage rate.

[0018] Next, the non-false-twisted core yarn and the non-false-twisted sheath yarn are aligned and then subjected to an air-mixing method such as interlacing or a plying / twisting method to obtain a mixed yarn. In particular, it is preferable that the mixed yarn is interlaced at 30 counts / m or more (more preferably 60 to 200 counts / m).

[0019] The hot water shrinkage of such a mixed yarn is preferably 40% or more (more preferably 40 to 60%) from the viewpoint of the anti-snagging properties of the quick-drying fabric. If the hot water shrinkage is less than 40%, the mixed yarn will not shrink sufficiently during the dyeing process, resulting in a low density of the quick-drying fabric. Therefore, if the quick-drying fabric gets caught on a sharp object, the yarn may be pulled out, resulting in a decrease in anti-snagging properties. On the other hand, if the hot water shrinkage is greater than 40%, the mixed yarn will shrink more during the dyeing process, resulting in a high density of the quick-drying fabric. As a result, although the anti-snagging properties are improved, the feel may become stiff and the quick-drying properties may be reduced.

[0020] Next, the mixed yarn is knitted or woven to obtain a fabric, which is then dyed or water-absorbent to obtain a quick-drying fabric. The heat history of dyeing and other processes causes the core fibers contained in the mixed yarn to shrink significantly, resulting in a sheath-core mixed yarn. In this case, it is preferable that the length difference between the core and sheath portions of the mixed yarn is 40% or more (more preferably 50-80%). If the length difference is less than 40%, the mixed yarn will lack volume, and when knitted, for example, the gaps between knitted loops will become large, which may lead to snagging and reduced snagging resistance. To achieve a length difference between the core and sheath portions of the mixed yarn of 40% or more, for example, a non-false-twisted core yarn may be cold-drawn from undrawn polyester yarn (UDY) or partially oriented polyester yarn (POY), while a drawn polyester yarn spun and drawn (hot-drawn) by a conventional method may be used as the non-false-twisted core yarn.

[0021] The following method can be used to measure the length difference between the core and sheath portions: (Method 1 for measuring length difference) First, a cylindrical knitted fabric is knitted using the mixed yarn, and after dyeing, the cylindrical knitted fabric is immersed in an aqueous sodium hydroxide solution, heated, and dried to reduce the core yarn. Then, a predetermined load is applied to a length (L1) of a predetermined wale of the mixed yarn removed from the cylindrical knitted fabric before reduction, and a length (L2) of the same wale of the mixed yarn removed from the cylindrical knitted fabric after reduction, and measurements are taken, and the yarn length difference is calculated using the following formula. Thread foot difference (%)=(L2-L1) / L1×100

[0022] (Method 2 for measuring thread length difference) The mixed yarn is removed from the fabric, a load of 0.1 cN (0.1 g) × the total fineness (dtex) of the mixed yarn is applied, and the yarn is cut to a length of 5 cm. From the cut mixed yarn, core fiber A (single fiber) and sheath fiber B (single fiber) are removed, and their lengths are measured under a load of 0.1 cN (0.1 g) × the single fiber fineness (dtex). The yarn length difference (%) is calculated using the following formula. Thread foot difference (%)=(LB-LA) / LA×100 Here, LA is the length (cm) of the core fiber A, and LB is the length (cm) of the sheath fiber B.

[0023] The fabric may be made of the mixed yarn alone, or may be made of the mixed yarn and other yarns. In this case, the other yarns are not particularly limited and may be non-false twist textured yarns, false twist crimp textured yarns, latent crimp textured yarns, spun yarns, etc. In particular, non-false twist textured yarns are more preferred in terms of water absorption and quick drying.

[0024] The basis weight of the quick-drying fabric is not particularly limited, but from the viewpoint of softness, drying speed, and application, it is 80 to 300 g / m 2 The quick-drying fabric preferably has a basis weight of 80 g / m 2 If the weight is less than 300 g / m, it is not preferable for shirt use from the viewpoint of burst strength. 2 If it exceeds this, the garment may become too heavy.

[0025] The weave of the quick-drying fabric is not particularly limited and may be either a knitted fabric or a woven fabric. Examples include, but are not limited to, woven fabrics with weaves such as plain weave, twill, and satin, and knitted fabrics with knitting structures such as jersey, knit miss, smooth, rib knit, pique, plated knit, denby, and half knit. The number of layers may be a single layer or two or more layers. Knitted fabrics with a density of 30 to 150 courses / 2.54 cm and 50 to 80 wales / 2.54 cm are particularly preferred in terms of absorbency, quick-drying properties, fluffy soft texture, and snagging resistance. If the knitted fabric density is less than the above range, the texture will be soft but the snagging resistance may be reduced. If the knitted fabric density is greater than the above range, the snagging resistance will be improved but the texture will be stiff and the quick-drying properties may be reduced.

[0026] Next, the textile product of the present invention is any textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing clothing, work clothes, car seat covering materials, and bedding, which is made using the quick-drying fabric. Such textile products use the quick-drying fabric and are therefore excellent in water absorbency, quick-drying properties, fluffy texture, and snagging resistance. [Example]

[0027] The present invention will now be described in detail with reference to examples, but the present invention is not limited to these examples. The physical properties in the examples were measured by the following methods.

[0028] (1) Weight Measured according to JISL1018-1998 6.4.

[0029] (2) Diffusible residual moisture content Approximately 0.6 g of water is dropped onto the sample in an atmosphere of 20°C x 65% RH, and the mass is measured at each time point to calculate the diffusible residual moisture content. Residual moisture content (%) = moisture content at each time (g) / moisture content immediately after dripping (back side) (g) × 100 Measure the time when the residual moisture content falls below 10%. A shorter time is better (faster drying).

[0030] (3) Anti-snagging properties Test for 5 hours using Kananoko according to JIS L 1058-1995 D3 method.

[0031] (4) Thread Foot A cylindrical knitted fabric is knitted using the mixed yarn and then dyed. Next, 3.75 g of the cylindrical knitted fabric is immersed in 250 ml of 50 g / L sodium hydroxide aqueous solution, the temperature is raised at 2°C / min, and the fabric is kept at 80°C for 270 minutes, after which it is dried to reduce the core yarn. A load of 3.6 g is then applied to the length (L1) of 50 wales of the mixed yarn removed from the cylindrical knitted fabric before reduction, and the length (L2) of 50 wales of the mixed yarn removed from the cylindrical knitted fabric after reduction, and measurements are taken. The yarn length difference is calculated using the following formula: Thread foot difference (%)=(L2-L1) / L1×100

[0032] (5) Breathability Air permeability (cc / cm) measured by JIS L1096-2010 8.26.1 A method (Fragile method) 2 s) is measured. The number of measurements is 5, and the average is calculated.

[0033] (6) Interlace degree The interlaced yarn is taken to a length of 1 m under a load of 8.82 mN x indicated tex (0.1 g / de), and after removing the weight, the number of knots after 24 hours of relaxation at room temperature is read and expressed in units per meter.

[0034] (7) Boiling water shrinkage (BWS) BWS (%) is measured according to JIS L1013 Method B.

[0035] (8) Texture In terms of softness, the product is rated on a three-point scale: excellent (◯), average (△), or poor (×).

[0036] (9) Overall rating The quick-drying property, fluffy soft feel, and snagging resistance are evaluated on a three-point scale: excellent (◯), average (△), and poor (×).

[0037] [Example 1] A cationic dyeable polyester, partially oriented POY (90 dtex / 36 yarns), consisting of polyethylene terephthalate copolymerized with 1.5 mol% of 5-sulfoisophthalic acid sodium salt, with a fineness of 90 dtex, a breaking strength of 2.0 cN / dtex, and a breaking elongation of 148%, was cold drawn at a draw ratio of 1.6 to obtain a yarn (56 dtex / 36 yarns). This yarn was then combined with a polyethylene terephthalate drawn yarn (44 dtex / 36 yarns) with a flat cross section (titanium oxide content 2.4%) and a cross-sectional flatness of 3.2, which had three constrictions in the longitudinal direction of the fiber cross section. The resulting yarn was then interlaced with 2% overfeed to obtain a mixed yarn (107 dtex / 72 yarns, interlace degree 106 / m) with a yarn length difference of 55%.

[0038] Next, using a 28-gauge circular knitting machine, the blended yarn (blending ratio: 75.2%) was interknitted with a polyethylene terephthalate drawn yarn (84 dtex / 30 strands) (blending ratio: 24.8%) having a flat cross section with a cross-sectional flatness of 3.2 and three constrictions in the longitudinal direction of the cross section, to form a plain knit circular fabric.

[0039] The knitted fabric was then dyed using a disperse dye at 130°C for 30 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L during dyeing, by performing a co-dye treatment. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute. The knitted fabric obtained had excellent water absorbency and quick-drying properties, a fluffy and soft texture, and anti-snagging properties. The evaluation results are shown in Table 1.

[0040] [Example 2] As a cationic dyeable polyester, 5-sulfoisophthalic acid sodium salt is copolymerized at 1.5 mol%, and the ethylene glycol component and terephthalic acid component are polyethylene terephthalate obtained by chemical recycling. Fineness 90 dtex A yarn (56 dtex / 36 threads) was cold-drawn at a draw ratio of 1.6 from cationic dyeable POY (partially oriented yarn) with a fiber count of 56 dtex / 36 threads, breaking strength of 2.0 cN / dtex, and breaking elongation of 150%. Another drawn polyethylene terephthalate yarn (44 dtex / 36 threads) with a flat cross section and a cross-sectional flatness of 3.2, which has three constrictions in the longitudinal direction of the fiber cross section and is made of polyethylene terephthalate, a component in which ethylene glycol and terephthalic acid components are obtained by chemical recycling, was aligned and interlaced with 2% overfeed to obtain a mixed yarn (107 dtex / 72 threads, interlace degree 106 threads / m) with a yarn length difference of 67%. Using a 28-gauge circular knitting machine, the blended yarn (blending ratio: 56%) was interknitted with a drawn yarn (84 dtex / 36 strands, breaking strength 3.5 cN / dtex, breaking elongation 31%) (blending ratio: 44%) having a side-by-side composite cross section of polytrimethylene terephthalate and polyethylene terephthalate to form a plain knit circular knit fabric.

[0041] The knitted fabric was then dyed using a disperse dye at 130°C for 15 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L during dyeing, by performing a co-dye treatment. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute. The knitted fabric obtained had excellent water absorbency and quick-drying properties, a fluffy and soft texture, and anti-snagging properties. The evaluation results are shown in Table 1.

[0042] [Example 3] The cationic dyeable polyester was polyethylene terephthalate copolymerized with 1.6 mol% of 5-sulfoisophthalic acid sodium salt. The cationic dyeable POY (partially oriented yarn) had a fineness of 56 dtex / 36 strands, a breaking strength of 2.4 cN / dtex, and a breaking elongation of 128%. This yarn (33 dtex / 36 strands) was cold drawn at a draw ratio of 1.6 times, and the resulting yarn was a polyethylene terephthalate drawn yarn (44 dtex / 36 strands) with a flat cross section and a cross-sectional flatness of 3.2, which had three constrictions in the longitudinal direction of the fiber cross section and was made of polyethylene terephthalate, whose ethylene glycol and terephthalic acid components were obtained by chemical recycling. The resulting yarn was then interlaced with 2% overfeed to obtain a mixed yarn (82 dtex / 72 strands) with a yarn length difference of 51%.

[0043] Next, a circular knitting fabric with a smooth texture was made from the blended yarn (blending ratio: 100%) using a 24-gauge circular knitting machine. The knitted fabric was then dyed using a disperse dye at 130°C for 30 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L during dyeing, by performing a co-dyeing process. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute. The knitted fabric obtained had excellent water absorbency and quick-drying properties, a fluffy and soft texture, and anti-snagging properties. The evaluation results are shown in Table 1.

[0044] [Comparative Example 1] Polyethylene terephthalate false-twisted crimped yarn (fineness 84 dtex / 72 strands) made using the conventional POY·DTY method was used on a 28-gauge circular knitting machine to knit a circular knit fabric with a smooth texture using 100% of the resulting false-twisted crimped yarn.

[0045] The knitted fabric was then dyed using a disperse dye at a temperature of 130°C for 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / l, and the dye liquor was treated in the same bath during the dyeing process to impart a hydrophilizing agent to the knitted fabric. The circular knitted fabric was then dyed at a temperature of 160°C. A final dry heat set was applied in 1 minute. The knitted fabric obtained had a soft feel and was excellent in water absorbency and snagging resistance, but was poor in quick-drying properties. The evaluation results are shown in Table 1.

[0046] Comparative Example 2 A drawn yarn (33 dtex / 12 threads) made of polyethylene terephthalate fiber with a boiling water shrinkage rate of 13% and a drawn yarn (35 dtex / 72 threads) made of polyethylene terephthalate fiber with a boiling water shrinkage rate of 8% were aligned, and interlaced with an overfeed of 1.6%, to obtain a blended yarn (69 dtex / 84 threads) with a thread length difference of 15%. Next, using a 28-gauge circular knitting machine, a circular knitted fabric with a plain stitch structure was knitted using two strands of the resulting 100% interlaced yarn.

[0047] The knitted fabric was then dyed using a disperse dye at 130°C for 30 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L during dyeing, by performing a co-dye treatment. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute. The knitted fabric obtained had a soft feel and was excellent in water absorbency and quick drying, but had poor anti-snagging properties. The evaluation results are shown in Table 1.

[0048] [Table 1a]

[0049] [Table 1b] [Industrial Applicability]

[0050] According to the present invention, quick-drying fabrics and textile products are provided which have excellent water absorbency and quick-drying properties, a fluffy soft feel, and anti-snagging properties, and are of great industrial value.

Claims

1. A quick-drying fabric comprising a core-sheath type mixed yarn, the core and sheath of the mixed yarn being multifilament made of polyester fibers that have not been subjected to false twist crimping, and the yarn length difference between the core and sheath is 40% or more as measured by the following method. (Method of measuring thread length difference) The mixed yarn is removed from the fabric, a load of 0.1 cN (0.1 g) × total fineness (dtex) of the mixed yarn is applied, and the yarn is cut to a length of 5 cm. From the cut mixed yarn, a core fiber A (single fiber) and a sheath fiber B (single fiber) are removed, and their lengths are measured under a load of 0.1 cN (0.1 g) × single fiber fineness (dtex). The yarn length difference (%) is calculated by the following formula. Thread length difference (%) = (LB-LA) / LA x 100 Here, LA is the yarn length (cm) of the core fiber A, and LB is the yarn length (cm) of the sheath fiber B.

2. The quick-drying fabric according to claim 1 , wherein the core is made of cationic dyeable polyester fiber.

3. The quick-drying fabric according to claim 1 or 2, wherein the sheath portion is made of modified cross-section fibers.

4. The quick-drying fabric according to any one of claims 1 to 3, wherein in the mixed yarn, the core and the sheath are both multifilaments having 20 to 200 filaments.

5. The quick-drying fabric according to any one of claims 1 to 4, wherein the mixed yarn is subjected to an interlace process at 30 pieces / m or more.

6. 6. The quick-drying fabric according to claim 1, wherein all of the fibers constituting the fabric are multifilament fibers that have not been subjected to false twist crimping.

7. 7. The quick-drying fabric according to claim 1, wherein the fabric is a knitted fabric having 30 to 150 courses / 2.54 cm and 50 to 80 wales / 2.54 cm.

8. The quick-drying fabric according to any one of claims 1 to 7, wherein the anti-snagging property of the fabric is grade 3 or higher.

9. The quick-drying fabric according to any one of claims 1 to 8, wherein the diffusible residual moisture regain (L0) of the fabric is 30 minutes or less.

10. 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 covering materials, and bedding, which is made using the quick-drying fabric according to any one of claims 1 to 9.

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