Pile yarn and towel cloth

Abstract

To provide a pile yarn and a towel cloth, which have high water absorbing property.SOLUTION: A pile yarn 1 used for a towel cloth is a core-sheath composite spun yarn. A core part fiber 2 is constituted of crimping polyester short fibers 2a. A sheath par fiber 3 is constituted of fibers in which cotton fibers 3a and water-soluble fibers 3b are mixed. A towel cloth of the invention includes the pile yarn 1. A water absorbing index of the towel cloth after removing water soluble fibers is 1500 or more based on the improved Larose method (surface water absorption method) specified in JISL1907 (2010).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to pile yarn and towel fabric.

Background Art

[0002] Towel fabrics are used for removing moisture after bathing, shampooing, washing the face, swimming, hand washing, etc., or for bathrobes, gowns, underwear, nightclothes, etc. Therefore, a high water absorption property is required. Patent Document 1 proposes using long staple cotton to make a fine-count untwisted yarn. Patent Document 2 proposes a towel fabric with snarls formed on the pile. Patent Document 3 proposes increasing the warp and weft densities of the towel fabric, using an untwisted yarn with a long fiber length for the pile yarn, and increasing the pile length to enhance water absorption.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the above prior art still has problems with water absorption and quick drying, and further improvement has been demanded.

[0005] In order to solve the above conventional problems, the present invention provides a pile yarn and a towel fabric having higher water absorption and quick drying properties.

Means for Solving the Problems

[0006] The pile yarn of the present invention is a pile yarn used for towel fabrics. The pile yarn is a core-sheath composite spun yarn. The core fiber is a polyester staple fiber having crimpability, and the sheath fiber is a fiber in which cotton fiber and water-soluble fiber are blended.

[0007] The towel fabric of the present invention is a towel fabric containing the above-mentioned pile yarn. The water absorption index in the improved Lauryl method (surface water absorption method) specified in JIS L 1907 (2010) of the towel fabric after removing the water-soluble fiber is 1500 or more.

Effects of the Invention

[0008] The pile yarn of the present invention is a core-sheath composite spun yarn. The core fiber is a polyester staple fiber having crimpability, and the sheath fiber is a fiber in which cotton fiber and water-soluble fiber are blended. Thus, a pile yarn and a towel fabric having high water absorption and quick drying properties can be provided. That is, due to the space formed by the swelling of the polyester staple fiber having crimpability in the core part and the space formed by removing the water-soluble fiber in the sheath part, the cotton fiber of the sheath fiber becomes in a free state and high water absorption is exhibited. In addition, the polyester staple fiber having crimpability in the core part can impart quick drying properties. A towel fabric having high water absorption and quick drying properties is easy to use and convenient for the user.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0010] The pile yarn of the present invention is a core-sheath composite spun yarn. The core fibers are polyester staple fibers having crimpability, and the sheath fibers are fibers obtained by blending cotton fibers and water-soluble fibers. The core-sheath composite spun yarn may be a sliver (fiber bundle) arranged in a core-sheath shape to form a ring-spun yarn, or a ring-spun ply yarn. Generally speaking, it is easier to create by arranging the sliver in a core-sheath shape to form a ring-spun yarn. In this case, a polyester staple fiber sliver having crimpability is arranged as the core, and a blended fiber of cotton fiber and water-soluble fiber is arranged as a sheath around the core to create a core-sheath sliver, and this sliver is ring-spun to obtain a ring-spun yarn.

[0011] The ratio of the core fibers to the sheath fibers is preferably 15 to 35% by mass of the core fibers and 65 to 85% by mass of the sheath fibers per 100% by mass of the pile yarn. More preferably, the core fibers are 17 to 32% by mass and the sheath fibers are 68 to 83% by mass. Even more preferably, the core fibers are 20 to 30% by mass and the sheath fibers are 70 to 80% by mass. Within the above range, the balance of the ratio of the core fibers to the sheath fibers is good, and an excellent towel fabric can be obtained.

[0012] The ratio of each fiber constituting the pile yarn is preferably 15 to 35% by mass of the polyester staple fiber having crimpability in the core, 50 to 70% by mass of the cotton fiber of the sheath fiber, and 5 to 25% by mass of the water-soluble fiber per 100% by mass of the pile yarn. Per 100% by mass of the sheath fibers, it is preferably 65 to 90% by mass of cotton fibers and 10 to 35% by mass of water-soluble fibers. More preferably, the cotton fibers are 67 to 88% by mass and the water-soluble fibers are 12 to 33% by mass. Even more preferably, the cotton fibers are 70 to 85% by mass and the water-soluble fibers are 15 to 30% by mass. Within the above range, the free state of the cotton fibers can be ensured by the space after removing the water-soluble fibers.

[0013] The pile yarn is preferably 10 to 80 counts in English count, more preferably 12 to 60 counts, and even more preferably 15 to 50 counts. With the above counts, the thickness of the towel fabric can be obtained. The pile yarn is preferably a spun yarn with a twist coefficient K represented by the following formula being 1.0 to 4.0, more preferably 1.2 to 3.8, and even more preferably 1.5 to 3.5. By doing so, it becomes a soft-twist yarn, and a preferable texture as a towel fabric can be obtained, and quick water absorption and quick drying can also be ensured. K = t / √S However, t: number of twists per inch (2.54 cm), S: English count (multiple of 840 yards (0.9144 m) of unit length with a reference weight of 1 pound (0.4536 kg)). If it is within the range of the yarn count, it is suitable for loop pile towels, and if the twist coefficient K is within the above range, the texture can be maintained well. In addition, to convert the English count to the tex count which is internationally used, it is calculated by the formula 590.5413 / English count.

[0014] Both the core fiber and the sheath fiber preferably have an average fiber length of 30 to 45 mm. If it is within the above range, the cotton spinning method can be used, which is convenient. The pile yarn is preferably a spun yarn for loop pile towels, and can be used for loop pile fabrics, loop pile knitted fabrics, etc., but more preferably used for warp loop pile fabrics. This is because warp loop pile fabrics are excellent in durability.

[0015] The crimped polyester staple fibers are preferably crimped fibers such as push-in crimp, gear crimp, knit-dent crimp, false more crimp, side-by-side conjugate crimp, core-sheath eccentric conjugate crimp, etc. Among these, side-by-side conjugate fibers and core-sheath eccentric conjugate fibers are preferable. The conjugate fibers are polyester fibers obtained by composite spinning of two types of polymers with different heat shrinkage rates, and are of a type in which spiral crimp appears after heat processing. When the crimped polyester staple fibers are arranged in the core part, entanglement between the fibers due to crimp occurs, and a decrease in yarn strength can be prevented even as a soft-twist yarn.

[0016] The towel fabric of the present invention has a water absorption index of 1500 or more, preferably 1500 to 5000, more preferably 1700 to 4500, and even more preferably 2000 to 4000 in the improved Laurus method (surface water absorption method) (the same applies to ISO 17617-2014) specified in JIS L 1907 (2010) for the towel fabric after removing water-soluble fibers. Thereby, the water blotting property is high and preferable water absorbency is obtained.

[0017] The diffusible residual moisture rate after 60 minutes of drying specified in JIS L 1907 (2010) (the same applies to ISO 17617-2014) for the towel fabric is preferably 20% or less, more preferably 1 to 20%, and even more preferably 3 to 15%. Thereby, the quick-drying property is high, and the towel becomes easy to use because drying after blotting water and drying after washing are fast. Also, the evaporation rate after 60 minutes of drying in the evaporation test specified in JIS L 1907 (2010) (the same applies to ISO 17617-2014) is preferably 80% or more, more preferably 80 to 100%, and even more preferably 85 to 95%. Thereby, the quick-drying property is high, and the towel becomes easy to use because drying after blotting water and drying after washing are fast.

[0018] The mass (basis weight) per unit area of the towel fabric is preferably 130 to 900 g / m 2 more preferably 140 to 600 g / m 2 even more preferably 150 to 450 g / m 2 For a bath towel, it is more preferably 400 to 600 g / m 2 and for a face towel, it is 130 to 200 g / m 2 With the above mass, the mass feeling and water absorbency as a towel can be ensured.

[0019] The cotton that can be used in the present invention can be any of Supima cotton, American cotton such as Sanforized cotton, Egyptian cotton such as Giza cotton, Indian cotton, Chinese cotton such as Xinjiang cotton, and Sea Island cotton.

[0020] The towel fabric of the present invention uses the above-mentioned pile yarn, warp (ground yarn), and weft (ground yarn). The warp (ground yarn) and weft (ground yarn) may be cotton spun yarn, a blended yarn of cotton and other fibers, or in some cases, spun yarn of other fibers. Examples of other fibers include polyester fiber, rayon fiber, acrylic fiber, and wool fiber. The blending ratio can be any ratio. The count of the warp (ground yarn) and weft (ground yarn) is from 10 to 100 in the British count system, and the twist coefficient K represented by the above formula is preferably from 1.0 to 8.0, more preferably from 1.5 to 7.0.

[0021] The towel fabric of the present invention can be used for bath towels, face towels, towel handkerchiefs, sports towels, bathrobes, etc. In addition, it is also useful as gowns, underwear, nightclothes, handkerchiefs, clothing, socks, carpets, bedding, bath mats, washroom mats, kitchen mats, toilet mats, entrance mats, etc.

[0022] The following will be described with reference to the drawings. In the following drawings, the same reference numerals indicate the same components. FIG. 1A is a schematic side view of the pile yarn 1 according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view taken along line I-I of FIG. 1A. This pile yarn 1 is a core-sheath type composite spun yarn. The core fiber 2 is composed of polyester staple fibers 2a having crimpability, and the sheath fiber 3 is composed of fibers in which cotton fibers 3a and water-soluble fibers 3b are blended. The water-soluble fibers 3b are removed by heat water treatment such as scouring, bleaching, and dyeing after being woven into the towel fabric, creating space accordingly.

[0023] FIG. 2 is a schematic explanatory view of a loop pile towel fabric 10 according to an embodiment of the present invention. This loop pile towel fabric 10 is composed of pile yarns 11a, 11b, warp (ground yarns) 12a, 12b, and weft (ground yarns) 13a, 13b. The pile yarns 11a, 11b form loop piles while being fixed to the ground weave composed of the warp (ground yarns) 12a, 12b and the weft (ground yarns) 13a, 13b. The loop pile towel fabric 10 is cut to a predetermined size and the ends are processed to become a towel. In the case of a bath towel, the size is, for example, 70 cm in length and 140 cm in width.

[0024] Figure 3 is a woven structure diagram of a loop pile towel according to an embodiment of the present invention. This woven structure is a 3 - warp towel structure (3 - pick terry motion), and the pile yarn is crossed once every three weft yarns are inserted. The arrangement of the warp yarns is to alternately arrange the ground yarn G and the pile yarn P. In Figure 4, black and cross marks indicate floating yarns, and white indicates sunken yarns.

Example

[0025] The present invention will be specifically described using the following examples. Note that the present invention is not limited to the following examples. <Water Absorbency Evaluation (Improved Laurus Method) Test Method> Five measurements were taken according to the improved Laurus method of JIS L 1907 (2010), and the average value was obtained. The water absorption index was calculated according to the following formula. Laurus Index (Water Absorption Index) = 2545V × 1411W + 79 V: Maximum water absorption rate (ml / s), W: Water absorption amount at the time of maximum water absorption rate (ml) The higher the value, the faster it absorbs the moisture on the skin and the larger the amount of moisture it absorbs. <Diffusible Residual Moisture Rate Test Method> According to the diffusible residual moisture rate test method of JIS L 1907 (2010), a 10 cm × 10 cm test piece was cut out in an atmosphere at a temperature of 20°C and a relative humidity of 65% RH, and its mass (W0) was measured. 0.6 mL of water was dropped onto the test piece, and its mass (W1) was measured. It was hung to dry under standard conditions (20°C, 65% RH), and the weight (W2) after 60 minutes was measured. The diffusible residual moisture rate (%) was obtained by the following formula. Diffusible Residual Moisture Rate (%) = {(W2 - W0) / (W1 - W0)} × 100 <Evaporation Test Method> According to the evaporation test method of JIS L 1907 (2010), a 10 cm × 10 cm test piece was cut out in an atmosphere at a temperature of 20°C and a relative humidity of 65% RH, placed in a petri dish, and the total mass (W) of the test piece and the petri dish was measured. 0.1 mL of water was dropped into the petri dish, and the test piece was placed on it, and its mass (W0) was measured. Under standard conditions (20°C, 65% RH), the weight (Wt ) was measured, and the transpiration rate (%) was determined by the following formula. Transpiration rate (%) = {(W0 - W t ) / (W0 - W)} × 100 <Other test methods> The test was conducted according to the test methods generally practiced in the industry.

[0026] (Example 1) <Raw material fiber> 1 Pile yarn (1) Core fiber Commercially available conjugate fiber having crimp and being a composite spun fiber of polyethylene terephthalate component and polytrimethylene terephthalate component side by side, with an average fiber length of 38 mm, a single fiber fineness of 3.3 decitex, and manufactured by Toray Industries, Inc. was used. (2) Sheath fiber · Cotton: Regular cotton was used. · Water-soluble fiber: Water-soluble vinylon fiber with an average fiber length of 32 mm and a single fiber fineness of 3.3 decitex was used as the water-soluble fiber. <Manufacture of spun yarn> The crimped polyester staple fiber serving as the core fiber was carded and blended to form a web and then a sliver. For the sheath fiber, per 100% by mass of the sheath fiber, 80% by mass of cotton and 20% by mass of the water-soluble fiber were carded and blended to form a web and then a sliver. Using the sliver of the crimped polyester staple fiber as the core and the blended fiber of cotton and the water-soluble fiber as the sheath, they were arranged so that the core fiber was 25% by mass and the sheath fiber was 75% by mass per 100% by mass of the pile yarn to form a roving. The roving was put on a ring spinning frame and spun to produce a core-sheath structure spun yarn with an English cotton count of 40s, a twist number of 24.03 turns / inch, a Z twist, and a twist coefficient K = 3.8. Two of these core-sheath structure spun yarns were used to produce a 40 / 2 ply yarn. The ply yarn was arranged as a warp yarn as the pile yarn. 2 Ground yarn (1) The warp (ground warp) was a ring-spun yarn made of 100% by mass of cotton, English cotton count 20 (fineness: 29.5 tex), twist number 14.8 turns / inch, Z twist, and twist coefficient K = 3.3. This spun yarn was used as single yarn. (2) The weft (ground weft) was a ring-spun yarn made of 100% by mass of cotton, English cotton count 20 (fineness: 29.5 tex), twist number 14.8 turns / inch, Z twist, and twist coefficient K = 3.3. This spun yarn was used as single yarn. <Fabric manufacturing> Using a towel loom, a loop pile fabric shown in FIGS. 2 and 3 was manufactured. The supply magnification of the pile yarn was 6 times that of the warp (ground warp). In this way, a pile fabric fabric with a warp density of 32 threads / inch and a weft density of 55 threads / inch was manufactured. After scouring and bleaching this pile fabric fabric (simultaneously dissolving water-soluble vinylon fibers), it was stretched on a tenter and heat-treated at a temperature of 190 ° C for 2 minutes. The mass (areal density) per unit area of this fabric was 290 g / m 2 It was. The above results are summarized and shown in Table 1.

[0027]

Table 1

[0028] As is clear from Table 1, it was confirmed that the towel fabric of Example 1 had high water absorption and quick drying properties. In addition, when a practical test was conducted as a bath towel, the water separation property (water absorption) from the skin was good, and the subsequent drying and drying after washing were also fast, and it was easy to use for the user. A general cotton towel has (1) a Ralose method evaluation index of around 800, and (2) a diffusible residual moisture rate of 40 to 60% after 60 minutes of drying time. It was confirmed that the towel fabric of Example 1 had high water absorption and quick drying properties.

Industrial applicability

[0029] The towel fabric of the present invention can be used for bath towels, face towels, towel handkerchiefs, sports towels, bathrobes, etc. In addition, it is also useful as gowns, underwear, nightclothes, handkerchiefs, clothing, socks, carpets, bedding, bath mats, washroom mats, kitchen mats, toilet mats, entrance mats, etc.

Explanation of Signs

[0030] 1 Pile yarn 2 Core fiber 2a Polyester staple fiber having crimpability 3 Sheath fiber 3a Cotton fiber 3b Water-soluble fiber 10 Loop pile towel fabric 11a, 11b Pile yarn 12a, 12b Warp (ground yarn) 13a, 13b Weft (ground yarn)

Claims

1. A pile yarn used for towel fabric, wherein the pile yarn is a core-sheath composite spun yarn, the core fibers are polyester staple fibers having crimpability, and the sheath fibers are fibers obtained by blending cotton fibers and water-soluble fibers. The pile yarn is characterized by this.

2. The pile yarn according to Claim 1, wherein the ratio of the core fibers to the sheath fibers is 15 to 35% by mass of the core fibers and 65 to 85% by mass of the sheath fibers per 100% by mass of the pile yarn.

3. The pile yarn according to Claim 1, wherein per 100% by mass of the sheath fibers, the cotton fibers are 65 to 90% by mass and the water-soluble fibers are 10 to 35% by mass.

4. The pile yarn according to Claim 1, wherein the pile yarn is a spun yarn of English count 10 to 50.

5. The pile yarn according to Claim 11, wherein the pile yarn is a spun yarn having a twist coefficient K represented by the following formula of 1.0 to 4.

0. K = t / √S where t: the number of twists per 1 inch (2.54 cm), S: English count.

6. The pile yarn according to Claim 1, wherein both the core fibers and the sheath fibers have an average fiber length of 30 to 45 mm.

7. The pile yarn according to Claim 1, wherein the pile yarn is a spun yarn for loop pile towels.

8. A towel fabric containing the pile yarn according to any one of Claims 1 to 7, wherein the water absorption index in the improved Laurus method (surface water absorption method) specified in JIS L 1907 (2010) of the towel fabric after removing the water-soluble fibers is 1500 or more. The towel fabric is characterized by this.

9. The towel fabric according to Claim 8, wherein the diffusible residual moisture rate of the towel fabric after 60 minutes of drying time is 20% or less.

10. The mass (basis weight) per unit area of the towel fabric is 130 to 900 g / m 2 The towel fabric according to claim 8, which is such.

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