Towel cloth and manufacturing method of the same

Abstract

To provide a towel cloth which reduces a yarn unevenness and retains a pile raising property, soft and fluffy texture, water absorbency, etc. in a woven state, and a manufacturing method of the same.SOLUTION: A towel cloth is composed of a pile yarn, a warp yarn, and a weft yarn, and a fiber material of the pile yarn is a medium-fiber cotton or a long-fiber cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and a short fiber content is 10 mass% or less with an average fiber length of 17 mm or less, and the pile yarn are untwisted or loosely twisted single yarn of a sirospun yarn, and the pile yarn, the warp yarn, and the weft yarn are bleached.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a towel fabric using siro spun as pile yarn and a method for producing the same. [Background technology]

[0002] Traditionally, towel fabrics have been made using pile yarns, warp yarns, and weft yarns to create pile weaves. To improve water absorption, towel fabrics have a relatively high basis weight (mass per unit area) and are made of thick, high-fine yarns. Patent Document 1 proposes using synthetic sirospun yarn to make a figured pile yarn. Patent Documents 2 and 3 propose using loosely twisted sirospun yarn to make a pile knitted fabric. In Patent Document 4, the present inventor proposes a towel fabric using untwisted or loosely twisted sirospun yarn as the pile yarn. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-088440 [Patent Document 2] Japanese Patent Application Publication No. 2019-137941 [Patent Document 3] Japanese Patent Application Publication No. 2019-137942 [Patent Document 4] Patent No. 7372718 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned prior art has problems with pile raising and soft, fluffy texture, and further improvements are required.

[0005] To provide a towel fabric and a method for producing the same, which have little yarn unevenness and retain the pile raising property, soft and fluffy texture, water absorbency, etc. of the towel fabric in the woven state, as a result of intensive studies aimed at producing a high-quality towel fabric not available in the past. [Means for solving the problem]

[0006] One embodiment of the present invention relates to a towel fabric made of pile yarns, warp yarns, and weft yarns, in which the fiber material of the pile yarns is medium-staple cotton or long-staple cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the content of short fibers with an average fiber length of 17 mm or less is 10 mass% or less, the pile yarns are untwisted or loosely twisted single yarns of sirospun yarn, and the pile yarns, warp yarns, and weft yarns are bleached.

[0007] Another embodiment of the present invention relates to a method for manufacturing a towel fabric as described above, in which the fiber material of the pile yarn is medium-staple or long-staple cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the short fiber content with an average fiber length of 17 mm or less is reduced to 10 mass% or less by combing, the pile yarn is a sirospun yarn, the twist direction of the sirospun yarn is opposite to the primary twist direction of the three roving yarns, and a secondary twist equal to or greater than the number of twists in the primary twist is added to form an untwisted or loosely twisted single yarn, the pile yarn, warp yarn, and weft yarn have been bleached, and the pile yarn, warp yarn, and weft yarn are supplied to a Jacquard loom to produce a woven towel fabric. [Effects of the Invention]

[0008] The towel of the present invention uses pile yarns made of medium-strength or long-strength cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, with a staple fiber content of 10% by mass or less with an average fiber length of 17 mm or less. The pile yarns are untwisted or loosely twisted single yarns of sirospun yarn, and the pile yarns, warp yarns, and weft yarns are bleached. This reduces yarn irregularities and provides a towel fabric and a method for manufacturing the same, which retains the pile-raising properties, soft, fluffy texture, and absorbency of the woven towel fabric. Specifically, cutting the staple fibers of the medium-strength or long-strength cotton at a specific ratio reduces yarn irregularities, and the woven towel fabric is washed and dried without post-bleaching or post-dyeing. As a result, the quality of the towel fabric as woven directly reflects the quality of the finished product, resulting in a high-quality towel fabric. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic perspective view of a triple sirospun spinning device according to one embodiment of the present invention. [Figure 2] FIG. 2A is a schematic explanatory diagram of a towel cloth according to one embodiment of the present invention, and FIG. 2B is a woven fabric diagram of the same. [Figure 3] FIG. 3A is a schematic explanatory diagram of a towel cloth according to another embodiment of the present invention, and FIG. 3B is a woven fabric diagram of the same. [Figure 4] FIG. 4 is a staple diagram of a card sliver (fiber bundle) used in one embodiment of the present invention. [Figure 5] FIG. 5 is a staple diagram of a sliver (fiber bundle) that has been combed once and is used in one embodiment of the present invention. [Figure 6] FIG. 6 is a staple diagram of a sliver (fiber bundle) that has been combed twice and is used in one embodiment of the present invention. [Figure 7] FIG. 7 is a side photograph (magnification: 30 times) of the pile portion of the towel fabric of Example 1 of the present invention. [Figure 8] FIG. 8 is a side photograph (magnification: 30 times) of the pile portion of the towel fabric of Comparative Example 1. [Figure 9] FIG. 9 is a side photograph (magnification: 30 times) of the pile portion of the towel fabric of Comparative Example 2. [Figure 10] FIG. 10 is a plan view photograph (magnification: 10 times) of the towel cloth of Example 1 of the present invention. [Figure 11] FIG. 11 is a plan view photograph (magnification: 10 times) of the towel cloth of Comparative Example 1. [Figure 12] FIG. 12 is a plan view photograph (magnification: 10 times) of the towel cloth of Comparative Example 2. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention relates to a towel fabric composed of pile yarns, warp yarns, and weft yarns. Pile yarns, which account for approximately 70% of the constituent yarns of a towel fabric, are important yarns that determine the pile standing property, the texture of the towel fabric, and functionality such as shedding. The fiber material of this pile yarn is medium- or long-staple cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the content of short fibers with an average fiber length of 17 mm or less is 10% by mass or less. This reduces the unevenness of the spun yarn, resulting in a high-quality yarn. The pile yarn fiber material, medium-staple or long-staple cotton, has an average fiber length of 28.6 to 34.7 mm and a fineness of 4.1 to 5.8 micronaires per inch. This material has a high crimp and high crimp strength. Therefore, when applied to the sirospun yarn of the present invention, the primary twist tendencies and primary twist migration (the phenomenon in which single fibers are twisted inward or outward) tend to remain, the fibers tend to entangle, and because the yarn is either untwisted or loosely twisted, each constituent fiber exists in a free state. The "long-staple cotton" referred to above refers to the "long-staple cotton" shown in Table 1 below, which is internationally recognized.

[0011] The pile yarn of the present invention is a single yarn of sirospun yarn with no twist or loose twist. That is, a secondary twist is added in the opposite direction to the primary twist of a plurality of rovings, with the number of twists being equal to or greater than the number of twists in the primary twist. This provides the following effects. (1) Less shedding. (2) Bulky. (3) It has a large volume and a fluffy feel before washing. (4) It is less likely to lose its fluffiness after washing and is less likely to deteriorate after washing. (5) It does not get wet again, making wiping comfortable. (6) Less likely to change dimensions when washed (less likely to shrink). (7) It dries quickly.

[0012] The constituent yarns of the towel fabric of the present invention (pile yarns, warp yarns, and weft yarns) are bleached. This allows the quality of the towel fabric in the woven state to directly reflect the quality of the finished product, resulting in a high-quality towel fabric.

[0013] The present invention uses Sirospun yarn as the pile yarn. Sirospun yarn is a yarn made by separately drafting two or three rovings at regular intervals and then twisting them together to form a two-ply or three-ply yarn. Compared to two-ply or three-ply yarns made by twisting multiple yarns together, Sirospun yarn has fibers arranged more regularly on the yarn surface and has less fuzz. Therefore, it can be used as a pile yarn in single yarn form. Furthermore, due to the unique yarn structure of Sirospun yarn, even when used as a no-twist or loose-twist yarn, the fibers are entangled with each other, which makes it easy to wind, less likely to cause yarn breakage during weaving, and allows for good weaving processability.

[0014] The count of the sirospun yarn is preferably 5 to 100 in British cotton count. For thin fabrics, a thin count of 100 to 40 is preferably used, for medium-weight fabrics, a thick count of 30 to 16 is preferably used, and for heavy fabrics, a thick count of 12 to 5 is preferably used.

[0015] The sirospun spun yarn of the present invention preferably has a twist coefficient K of 0 to 3.5, more preferably 0 to 3.3, and even more preferably 0 to 3.0. The twist coefficient K is calculated using the following formula (Math 1):

number

[0016] Preferably, the sirospun yarn is untwisted or loosely twisted by adding a secondary twist equal to or greater than the number of twists in the primary twist in the opposite direction to the primary twist direction of multiple rovings. For example, if the primary twist directions of two or three rovings are both Z-direction, the secondary twist is S-direction, and the number of secondary twists is equal to or greater than the number of twists in the primary twist. This allows each constituent fiber to exist in a more free state, resulting in good pile standing and a pile yarn with a soft, fluffy texture. Here, untwisted refers to when the twist coefficient K is zero, and loosely twisted refers to when the twist coefficient K is greater than zero and not greater than 3.3.

[0017] The sirospun yarn is preferably a two-strand sirospun yarn or a three-strand (triple) sirospun yarn, more preferably a three-strand (triple) sirospun yarn with a round cross section. The sirospun yarn is preferably 100% cotton. 100% cotton provides a soft, fluffy texture and is also absorbent.

[0018] The warp and weft yarns are preferably ring-spun yarns using extra-long staple cotton with an average fiber length of 34.8 to 44.5 mm and a micronaire fineness of 3.0 to 4.1 μg / inch. The warp and weft yarns are preferably fine with an English cotton count of 10 to 50. The pile yarns form loop pile while being held in place by the ground weave made up of the warp and weft yarns. Therefore, if the warp and weft yarns are made of extra-long staple cotton and have a fine count, the holding force of the pile yarns can be increased, preventing pile slippage. Furthermore, the fabric has a good texture. The "extra-long staple cotton" is as shown in Table 1 below and is internationally recognized.

[0019] [Table 1]

[0020] The twist coefficient K of the warp yarns and weft yarns is preferably 3.5 to 4.5, more preferably 3.7 to 4.2, and even more preferably 3.8 to 4.0. The twist coefficient (K) is calculated using the above formula (Equation 1). This increases the yarn strength and extends the durability of the towel.

[0021] The pile yarn is preferably combed yarn. This allows the content of short fibers with an average fiber length of 17 mm or less to be 10% by mass or less, preferably 8% by mass or less, more preferably 6% by mass or less, and even more preferably 4% by mass or less. The pile yarn of the present invention can be used as both a warp pile yarn and a weft pile yarn, but is preferably used as a warp pile yarn.

[0022] The method for producing the towel cloth of the present invention includes the following steps. (1) Combing process of pile yarn made of long staple cotton The pile yarn fiber material is medium- or long-staple cotton with an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the short fiber content of an average fiber length of 17 mm or less is reduced to 10% by mass or less by combing. The combing process (comber step) is preferably carried out twice, with the number of comber needles increased to make the lap width as thin as possible, and the process carried out slowly at about one-third the normal speed. This allows the short fiber content of an average fiber length of 17 mm or less to be reduced to 10% by mass or less, preferably 8% by mass or less, more preferably 6% by mass or less, and even more preferably 4% by mass or less. (2) Pile yarn spinning process Using a Sirospun spinning machine, two or three rovings are twisted in the opposite direction to the primary twist and given a secondary twist equal to or greater than the number of twists in the primary twist to produce a non-twisted or loosely twisted single yarn. The twist coefficient K of the Sirospun yarn is preferably 0 to 3.5. (3) Spinning process of warp and weft yarns The warp and weft yarns are made of extra-long staple cotton with an average fiber length of 34.8 to 44.5 mm and a micronaire fineness of 3.0 to 4.1 μg / inch, which are spun using a ring spinning frame. The warp and weft yarns are preferably fine with a British cotton count of 10 to 50. (4) Pile yarn, warp yarn, and weft yarn bleaching process The pile yarn, warp yarn, and weft yarn are subjected to a bleaching process. Bleaching involves scouring and bleaching the spun yarn. For white items, bleaching alone is sufficient, or the yarn may be dyed with a white dye and / or a fluorescent dye. For colored items, a dyeing process may be added after bleaching. Dyeing is preferably carried out with reactive dyes at a temperature of 60 to 80°C for approximately 20 to 60 minutes. (5) Weaving process Pile yarns, warp yarns, and weft yarns are fed into a jacquard loom to weave towel fabric, for example, in a three-ply towel weave (three-pick terry motion weave) or four-ply towel weave (four-pick terry motion weave). A four-ply towel weave is preferred. Compared to a three-ply towel weave, a four-ply towel weave has the advantage of anchoring the pile yarns to the ground weave, reducing the rate of shedding and improving the pile's standing properties, resulting in a high volume, increased airflow, and quick drying. After weaving, the fabric is washed and dried in its roll form, and then hemmed to produce a towel product. Scouring and bleaching after weaving are undesirable, as they are subjected to a water-based rubbing process, which can cause the loops to collapse or become distorted.

[0023] The method for producing towel cloth of the present invention has the following effects and advantages. (1) Although a secondary twist is applied, the twist tendency of the primary twist remains, the migration of the primary twist also remains, there is entanglement between the fibers, and because it is a non-twisted or loosely twisted yarn, each constituent fiber exists in a free state, the pile has good nap-raising properties, and becomes a pile yarn with a soft and fluffy texture. Because of its soft and fluffy texture, it can come into gentle contact with the skin and can efficiently wipe away sweat and moisture (texture effect, wiping effect). (2) Because pile yarn is either untwisted or loosely twisted, the constituent fibers are more likely to absorb moisture, and at the same time, this swelling promotes air movement, improving breathability (water absorption effect, ventilation effect). (3) The intertwining of the constituent fibers reduces pilling (impact of reduced pilling), reduces changes in texture due to washing, and maintains the original soft and fluffy texture (impact of texture durability after washing). (4) When producing spun yarn, there is no need to use water-soluble fibers (such as water-soluble vinylon), which reduces costs. Also, if water-soluble fibers (such as water-soluble vinylon) are used and then removed after the fabric is made, the quality of the finished fabric will be reduced. (5) Since there is no need to use water-soluble fibers (such as water-soluble vinylon) when producing spun yarn, the environmental impact of factory wastewater containing such fibers can be reduced.

[0024] The towel of the present invention is suitable for bath towels (towels after bathing), bath towels, bedding towels, face towels, towel handkerchiefs (handkerchiefs), hand towels, washcloths, hand towels, bath mats, sports towels, beach towels (body towels), etc. The fabric blend ratio, yarn type, yarn usage, mass per unit (basis weight), etc. are appropriately set according to the required properties such as shedding resistance and water absorbency. The basis weight can be controlled by changing the pile length (long to short) of the pile yarn to control the basis weight (large to small). Here, to give an example of a preferable basis weight that can exert the effects of the present invention, a basis weight of 100 to 250 g / m for thin fabrics is 2 The medium weight fabric has a basis weight of 250-500g / m 2 The thickness is 500 to 1000 g / m 2 In addition, 100 g / m 2 Those that are less than 1000g / m are thin and have no bulk. 2 Anything over that is too thick and heavy, and neither is desirable.

[0025] The following description will be given with reference to the drawings, in which the same reference numerals denote the same parts. 1 is a schematic perspective view of a triple sirospun spinning device according to one embodiment of the present invention. In this triple sirospun spinning device 10, three roving bobbins 11a, 11b, and 11c are hung per spindle from a creel (roving supplying device), and rovings 12a, 12b, and 12c supplied from the three roving bobbins 11a, 11b, and 11c are sent in parallel to a drafting device 15 through a three-hole trumpet guide 13 provided upstream (on the roving bobbin side) of a back roller 14. The rovings 12a, 12b, and 12c are drafted at predetermined intervals between the back roller 14 and an apron 16, and between the apron 16 and a front roller 17, respectively, to form fleeces 18a, 18b, and 18c. The fleeces 18a, 18b, 18c are spun from the front roller 17 and twisted downstream of the front roller 17 by a twisting mechanism caused by the rotation of the spindle 21 to form a single spun yarn 19, which is then taken up onto a bobbin 22 via a snail wire 20 and a traveler 21. For example, the twist direction of the primary twist of the three rovings 12a, 12b, 12c is all in the Z direction, and the twist direction by the spindle 21 is in the S direction, and they are twisted in the untwisting direction. In addition, the number of twists by the spindle 21 (secondary twist number) is set to be the same as or greater than the number of twists in the primary twist, resulting in a non-twisted or loosely twisted yarn.

[0026] FIG. 2A is a schematic diagram of a towel fabric 1 according to one embodiment of the present invention. This towel fabric 1 is composed of warp pile yarns 2a and 2b, weft yarn 3, and warp yarns 4a and 4b. The warp pile yarns 2a and 2b form loop piles while being held in place by the ground weave composed of the weft yarn 3 and warp yarns 4a and 4b. The resulting towel fabric 1 is cut to a predetermined size, and the edges are processed to form towels. FIG. 2B is a weave diagram of the towel fabric. This weave is a three-weft towel weave (three-pick terry motion weave). The warp pile yarns cross once for every three weft yarns. The warp yarns G and the warp pile yarns P are arranged alternately. The weft yarns 1 to 3 indicate the order. In FIG. 2B, as viewed from the warp, black and "x" indicate floating yarns, and white indicates sinking yarns.

[0027] FIG. 3A is a schematic diagram of a towel fabric 1 according to another embodiment of the present invention. This towel fabric 1 is composed of warp pile yarns 2a and 2b, weft yarns 3, and warp yarns 4a and 4b. The warp pile yarns 2a and 2b are engaged with a ground weave composed of the weft yarns 3 and warp yarns 4a and 4b to form loop piles. The resulting towel fabric 1 is cut to a predetermined size, and the edges are processed to form towels. FIG. 3B is a weave diagram of the towel fabric. This weave is a four-weft towel weave (four-pick terry motion weave). The warp pile yarns cross once for every four weft yarns. The warp yarns G and warp pile yarns P are arranged alternately. Compared to a three-weft towel weave, a four-weft towel weave has the advantages of more firmly fixing the pile yarns to the ground weave, resulting in a lower pilling rate and better pile standing, resulting in a fluffy, voluminous fabric with good ventilation and quick drying. The weft threads 1 to 4 indicate their order. In Figure 3B, when viewed from the warp, black and x indicate floating threads, and white indicates sinking threads. [Example]

[0028] The present invention will be explained in more detail below using examples, but the present invention is not limited to the following examples. <Evaluation of the texture of finished towel fabric> (1) Evaluation of soft texture The softness of the texture is expressed as the volume per gram of towel fabric, and is calculated using the following bulk height formula. The higher the value, the softer and better the texture. Thickness was measured according to JIS L 1096 (2010) 8.5 bulkiness test, and basis weight was measured by precisely weighing the weight of a 1m square. Measurements were taken at five locations and the average value was expressed. Umbrella height (cm 3 / g) = Thickness (mm) / Basis Weight (g / m 2 ) x 1000 (2) Evaluation of fluffy texture The towel fabric was compressed at a constant speed using a compression measuring device: KES-G5 (manufactured by Kato Tech Co., Ltd.), and the compression work: WC = (gf.cm 2 ) was calculated. Measurements were taken at five locations and the average value was expressed. The WC value is the energy required to compress the fabric; the higher the value, the better the towel is compressed, the more fluffier it is, and the fluffier it feels. (3) Evaluation of texture durability after washing The towel fabric was washed 30 times in a washing machine according to JIS L 0217 (1995), Method 103. After drying, the compression work: WC = (gf.cm 2 ) was measured at five locations and the average value was expressed as the average value. The smaller the difference in WC value before and after washing, the less the loss of fluffy texture due to washing, and the more durable and good the product is. (4) Evaluation of drainage performance during washing A 35cm wide piece of towel fabric was cut to a length of 80g, the weight was accurately measured to one decimal point, and the piece was soaked in water for 20 minutes. The wet towel fabric was then removed and centrifuged in the spin tub of a washing machine for 4 minutes, then accurately weighed and the residual moisture content (%) of the towel fabric was calculated using the following formula. The smaller the value, the better the drainage. Better drainage tends to result in a faster subsequent drying speed. Three measurements were taken and the average value was calculated. Residual moisture content of fabric (%) = (weight of fabric after soaking in water and dehydration (W1)) - (weight of fabric before soaking in water (W0)) / (weight of fabric before soaking in water (W0)) x 100 (5) Drying evaluation The wet towel fabrics after dehydration prepared in the evaluation of drainage properties in washing (4) above were hung to dry, and the weight of the fabric was measured every 30 minutes to determine the drying time, and the time required for the fabric to reach a residual moisture content of 10% was calculated by dividing the time proportionally. The test environment was under standard conditions, with a temperature of 20±4°C and a relative humidity of 65±4%RH. (6) Evaluation of pilling of towel fabric after washing The amount of shedding due to washing was measured according to JIS L0217 (1995), method 103. The shedding rate (%) was calculated using the following formula; the smaller the value, the less shedding there is and the better the result. Measurements were made at 5 points and the average value was used. Lint shedding rate (%) = (weight of lint that fell off after washing (g1)) / (weight of towel before washing (g0)) x 100 (7) Water absorption evaluation (modified Larose method) Measurements were taken five times according to the modified Larose method of JIS L 1907 (2010), and the average value was calculated. The Larose index (water absorption index) was calculated according to the following formula. Larose index (water absorption index)=2545V×1411W+79 V: Maximum water absorption rate (ml / s), W: Water absorption amount at maximum water absorption rate (ml) The higher the value, the faster and more moisture is absorbed from the skin, which is preferable. (8) Dimensional change rate This was carried out in accordance with JIS L 1096 (2010) 8,39,6 G method (method for pulsator-type domestic electric washing machines). That is, the measurement was made using the following formula from the dimension (L1, mm) measured before washing and the dimension (L2, mm) measured after 30 washes and tumble drying. Dimensional change rate (ΔL%) = [(L2-L1) / L1] x 100 (9) Water absorption rate (dropping method) The water absorption rate of terry cloth was measured based on the Vuillet method, a drop method specified in JIS L 1907 (2010). The test outline involves dropping a single drop of water onto the terry cloth from a height of 10 cm, measuring the absorption time (seconds) until the mirror-like surface of the drop disappears three times, and calculating the average value. The shorter the time, the faster and better the water absorption. <Rewetting rate test method> The water rewet rate is described in Patent Publication No. 6991633 proposed by the present applicant, and is a test method in which water droplets are dropped onto a test specimen of fabric, the fabric is allowed to absorb the water, the water is absorbed with filter paper, and the property of the fabric not releasing the water is evaluated as the water rewet rate, which corresponds to the evaluation of the water absorbency felt by people when using fiber fabrics such as towels. The lower the water rewet rate, the greater the water absorbency of the fabric, and the better it can be evaluated. (1) Test environment and other conditions The test environment was standard conditions, with a temperature of 20±4°C and a relative humidity of 65±4%RH. The filter paper used was stored for more than 24 hours under standard conditions: temperature 20±4°C, relative humidity 65±4%RH. The test specimens were stored for more than 24 hours under standard conditions at a temperature of 20±4°C and a relative humidity of 65±4%RH. The temperature of the dripping water used was 20±15℃ (5~35℃). (2) Operation procedure The test specimen of the fiber towel fabric was 10cm long and 10cm wide. The test specimen was placed on the sample stand. The filter paper used was made from α-cellulose, conforming to JIS P 3801 (1976) Class 1 standard, with a diameter of 110 mm and a thickness of 0.22 mm. The weight of the filter paper was measured. The filter paper used was Advantec's "Circular Qualitative Filter Paper No. 1." Measure 0.8 ml of water into a pipette, drop it into the test specimen, and wait 5 seconds to allow the test specimen to absorb the water. A filter paper was placed on top and a load of 1.3 kg (1274 Pa) was placed on top of it. Wait 5 seconds and then remove the load. The weight of the filter paper after absorbing water was measured. (3) Calculation of water rewetting rate It was calculated using the following formula. W = [(BA) / A] × 100 Where W: Water rewetting rate (%) A: Weight of filter paper before measurement (g) B: Weight of filter paper after absorbing water (g) <Pile standing> The pile portion of the towel fabric was observed using a side photograph (30x magnification) with an optical microscope. <Characteristics of sliver> Measurement was performed in accordance with JIS L 1019 (2006). <Other physical properties> Measurements were made according to methods used in the industry.

[0029] Example 1 (1) Warp pile yarn The warp pile yarn fiber material was cotton with an average fiber length of 30.5 mm and a micronaire of 5.6 μg / inch. After passing through a carding machine, the yarn was combed twice (combing process). During this process, the number of combing needles was increased to make the lapped yarn as thin as possible, and the process was carried out slowly at about one-third the normal speed. This resulted in a short fiber content of 3.8% by mass, with an average fiber length of 17 mm or less. The effective fiber length, short fiber content, and cut rate after each process are shown in Table 2. Staple diagrams for each sliver (fiber bundle) are shown in Figures 4 to 6.

[0030] [Table 2]

[0031] (2) Spinning of warp pile yarn Warp pile yarns were produced using a triple sirospun spinning apparatus shown in Figure 1. The twist direction of the three rovings 12a, 12b, and 12c in the primary twist was the Z direction, and the twist direction by the spindle 21 was the S direction, and they were twisted in the untwisting direction. The roving fineness was 5 g / 6 yards (9113 decitex), and the roving twist number in the Z direction was 5 turns / inch (twist factor K = 1 in cotton count). The obtained spun yarn had a cotton count of 16.1 and a twist factor of 11.5 turns / inch (twist factor K = 2.875). The physical properties of the obtained warp pile yarns are shown in Table 3. (3) Spinning of warp and weft yarns The warp and weft yarns were made of cotton (extra-long staple cotton) with an average fiber length of 36.5 mm and a micronaire fineness of 3.5 μg / inch, and were spun using a ring spinning frame. The British cotton count was 20 and the twist factor K was 3.8. (4) Pile yarn, warp yarn, and weft yarn bleaching process The pile yarn, warp yarn, and weft yarn were bleached by conventional methods. They were scoured in a dilute caustic soda and alcohol ethoxylate bath at 98°C for 50 minutes, then bleached in a hydrogen peroxide bath at 98°C for 50 minutes, sized at 95°C at 100 m / min, and finished by drying at 120°C (off-white finish). (5) Weaving process Pile yarns, warp yarns, and weft yarns were fed into a Jacquard loom to weave a towel fabric with a four-pick terry motion weave (4-pick terry motion weave) as shown in Figures 3A-B. After weaving, the fabric was washed and dried in rolls, and then hemmed to form a towel product. The pile length was 1.18 cm. Other physical properties are shown in Table 4.

[0032] (Comparative Example 1) The same procedure as in Example 1 was carried out except that card sliver was used as the warp pile yarn.

[0033] (Comparative Example 2) The same procedure as in Example 1 was carried out, except that the warp pile yarns were not bleached, but were bleached after being woven. The results for the above warp pile yarns are shown in Table 3, and the results for the towel fabric are shown in Table 4.

[0034] [Table 3]

[0035] [Table 4]

[0036] As is clear from Table 4, the towel fabric of Example 1 had the following effects compared to Comparative Examples 1 and 2. (1) Less shedding. (2) Bulky. (3) It has a large volume and a fluffy feel before washing. (4) It is less likely to lose its fluffiness after washing and is less likely to deteriorate after washing. (5) It does not get wet again, making wiping comfortable. (6) It is less likely to change dimensions or shrink when washed. (7) It dries quickly and the residual moisture content drops to 10% or less in a short time. [Industrial Applicability]

[0037] The towel fabric of the present invention is suitable for use as a fabric for bath towels (towels for after a bath), bath towels, bedding towels, face towels, towel handkerchiefs, sports towels, bathrobes, towel blankets, as well as for clothing, socks, rugs, bedding, etc. [Explanation of symbols]

[0038] 1 towel fabric 2a, 2b warp pile yarn 3 Weft threads 4a, 4b warp threads 10 Sirospun spinning device 11a, 11b, 11c roving bobbin 12a,12b,12c roving 13 Trumpet Guide 14 Back roller 15 Draft device 16 Apron 17 Front roller 18a, 18b, 18c Fleece 19 Spun Yarn 20 Snell Wire 21 Spindle 22 Bobbin

Claims

1. A towel fabric made of pile yarns, warp yarns, and weft yarns, The pile yarn fiber material is medium-fiber or long-fiber cotton having an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the content of short fibers having an average fiber length of 17 mm or less is 10 mass % or less, The pile yarn is a single yarn of a sirospun yarn that is untwisted or loosely twisted, The warp yarns and weft yarns are ring-spun yarns using extra-long staple cotton with an average fiber length of 34.8 to 44.5 mm and a micronaire of 3.0 to 4.1 μg / inch, The towel fabric is characterized in that the pile yarns, warp yarns and weft yarns are bleached.

2. 2. The towel cloth according to claim 1, wherein the count of the sirospun yarn is 5 to 100 in British cotton count.

3. The towel cloth according to claim 1, wherein the twist coefficient K of the sirospun yarn is 0 to 3.

5. The twist factor (K) is calculated using the following formula (1). [Equation 1] Where t: number of twists (twists / 25.4mm), S: British cotton count

4. 2. The towel fabric according to claim 1, wherein the twist direction of the sirospun yarn is opposite to the primary twist direction of the plurality of roving yarns, and a secondary twist is added that is equal to or greater than the number of twists in the primary twist.

5. The towel fabric according to claim 1, wherein the sirospun yarn is a two-strand sirospun yarn or a three-strand (triple) sirospun yarn.

6. 2. The towel fabric according to claim 1, wherein the warp yarns and weft yarns have a count of 10 to 50 in British cotton count.

7. 2. The towel fabric according to claim 1, wherein the twist coefficient K of the warp yarns and the weft yarns is 3.5 to 4.

5. However, the twist factor (K) is calculated using the above formula (Equation 1).

8. 2. The towel fabric according to claim 1, wherein the pile yarn is combed yarn.

9. A method for producing a towel cloth according to any one of claims 1 to 8, The pile yarn fiber material is medium-fiber cotton or long-fiber cotton having an average fiber length of 28.6 to 34.7 mm and a micronaire of 4.1 to 5.8 μg / inch, and the content of short fibers having an average fiber length of 17 mm or less is reduced to 10 mass% or less by combing treatment; The pile yarn is a triple sirospun yarn, and the twist direction is opposite to the primary twist direction of the three rovings, and a secondary twist equal to or greater than the number of twists in the primary twist is added to form a non-twisted or loosely twisted single yarn. The pile yarns, warp yarns, and weft yarns are subjected to a yarn bleaching treatment, A method for producing a towel fabric, comprising supplying the pile yarns, warp yarns and weft yarns to a Jacquard loom to produce a towel woven fabric.

10. The method for manufacturing a towel cloth according to claim 9, wherein the yarn is dyed after the bleaching treatment.

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