Toweling and Manufacturing Method Thereof
20230203723 · 2023-06-29
Assignee
Inventors
Cpc classification
International classification
D03D13/00
TEXTILES; PAPER
Abstract
To provide towel cloth which has favorable pile uprightness (erectility of pile) and bulkiness, and has both a fluffy hand and a dry touch, and moreover which hardly drops fluff, and a manufacturing method of such towel cloth. Towel cloth constituted by locking a pile yarn to a ground yarn, wherein the pile yarn has two or more single yarns which are initially twisted in a same direction and which are subsequently twisted in an opposite direction to the initial twist.
Claims
1. Towel cloth constituted by locking a pile yarn to a ground yarn, wherein the pile yarn has two or more single yarns initially twisted in a same direction, the pile yarn is structured such that the two or more single yarns are integrally twisted in an opposite direction to the initial twist, and the single yarn is constituted of an air spinning yarn.
2. The towel cloth according to claim 1, wherein a yarn count of the single yarn is 8 to 120.
3. The towel cloth according to claim 1, wherein the single yarn is constituted of cotton at a mixing ratio of 60 wt. % or higher.
4. The towel cloth according to claim 1, wherein weight is 100 to 1000 g/m.sup.2.
5. A manufacturing method of towel cloth constituted by locking a pile yarn, the method comprising: a step of paralleling two or more single yarns initially twisted in a same direction; a step of untwisting the two or more single yarns by a subsequent twist in an opposite direction to the initial twist and forming a pile yarn; and a step of locking the pile yarn to a ground yarn in which a warp ground yarn and a weft ground yarn intersect each other, wherein the single yarn is constituted of an air spinning yarn.
6. The towel cloth according to claim 2, wherein the single yarn is constituted of cotton at a mixing ratio of 60 wt. % or higher.
7. The towel cloth according to claim 2, wherein weight is 100 to 1000 g/m.sup.2.
8. The towel cloth according to claim 3, wherein weight is 100 to 1000 g/m.sup.2.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0031]
[0032]
[0033]
[0034]
DESCRIPTION OF EMBODIMENTS
[0035] Hereinafter, with reference to the photographs shown in
[0036]
[0037] As a comparative example of the paralleled state,
[0038] On the other hand, the twisted yarn being an untwisted two ply yarn according to the first embodiment exhibits an unprecedented unbalanced external appearance. There are several “accumulated twists” in which a twist portion of a two ply yarn is firmly fixed and hand is relatively hard at these locations. In addition, there are a large number of voids (gaps) between one accumulated twist and the next in which single yarns are separated from each other. The void between the single yarns is between binding points (accumulated twists) of the yarn, and since the void hardly collapses due to external force, the void is retained in a stable manner. Since the accumulated twists impart rigidity to the yarns as a whole, the twisted yarn structure described above provides a pile yarn with erectility and achieves superior so-called pile uprightness (erectility of pile). In addition, since an accumulated twist has fine irregularities on a surface thereof, using twisted yarn created by untwisting two ply yarn as a pile yarn produces towel cloth with a surface that is dry to the touch. Furthermore, the large number of voids between the single yarns include a lot of air and make yarns bulgy, and towel cloth using such yarns as pile yarns is bulky and realize fluffy hand. Moreover, the voids do not collapse readily and hand hardly changes even after washing.
[0039] Next, towel cloth using the twisted yarn according to the first embodiment will be described. Generally, towel cloth is constituted of a pile yarn and two ground yarns. The ground yarns are located at the center of the towel cloth, constituted of a warp ground yarn and a weft ground yarn, and grasp front and back pile yarns. The pile yarn is a vertical pile yarn having large loops on the front and back sides of a towel. Generally, a composition ratio of pile yarn and ground yarn of towel cloth is pile yarn: 65 to 80 wt. % and ground yarn: 35 to 20 wt. % and the pile yarn with the higher composition ratio is directly related to performance of the towel cloth such as hand and drop fluff property.
[0040] While a material of the pile yarn is not limited as long as the pile yarn is a staple spun yarn, 100% cotton yarn is preferably used due to superior hand, moisture absorbency, and water absorbability. A small amount of a material other than cotton such as rayon, cupra, acryl, wool, or polyester may be mixed with cotton. Rayon and cupra provide moisture absorbency, acryl and wool provide heat retention, and polyester provides dimensional stability and the like.
[0041] A used yarn count of the pile yarn is preferably 8 to 120 as a yarn count of a single pile yarn prior to paralleling. For example, 10 to 15 are favorable yarn counts for thick towel cloth, 20 to 40 are favorable yarn counts for medium thick towel cloth, and 48 to 100 are favorable yarn counts for thin towel cloth. A yarn count under 8 means that the yarn is too thick, producing hard hand which is not preferable. In addition, a yarn count over 120 results in excessively thin hand and insufficient strength which is not preferable.
[0042] Towel cloth using the twisted yarn according to the first embodiment is preferably towel cloth constituted such that a mixing ratio of cotton is 60 wt. % or higher. This is a mixing ratio which enables hand, water absorbability, and moisture absorbency of cotton to be satisfied and towel cloth in which pile yarn and ground yarns are all 100% cotton yarns is particularly preferable. Moreover, at a mixing ratio of under 40 wt. %, rayon or cupra may be used in the ground yarn in order to improve moisture absorbency or wool may be used in the ground yarn in order to produce warmth.
[0043] Towel cloth using the twisted yarn according to the first embodiment has a weight of 100 to 1000 g/m.sup.2 which is a preferable range that enables effects of hand and drop fluff property to be exhibited. Examples of preferable specific applications of the weight of towel cloth include a face towel application for relatively thin towel cloth with a weight of 100 to 250 g/m.sup.2. Towel cloth with a weight of 250 to 450 g/m.sup.2 is preferably used in a general hand towel application. Towel cloth with a weight of 500 to 1000 g/m.sup.2 is preferably used in thick applications such as a bath towel. Towel cloth with a weight under 100 g/m.sup.2 is thin and insufficient in terms of bulkiness and towel cloth with a weight exceeding 1000 g/m.sup.2 is too thick and too heavy and are therefore both not preferable.
[0044] (Application to Air Spun Yarn)
[0045] Applying air spinning yarn with high rigidity as the twisted yarn according to the first embodiment further enhances pile uprightness (erectility of pile) due to a synergistic effect with the accumulated twist structure of the twisted yarn according to the first embodiment and produces bulky towel cloth. In this case, air spinning yarn refers to a yarn spun by spinning staple cotton using air and is not particularly limited. Among air spinning yarns, a core-in-sheath air spinning yarn in which a center portion (core) of the spun yarn has 20 to 30% of a parallel fiber portion and an outer layer portion (sheath) has 80 to 70% such as that disclosed in Patent Document 6 is particularly preferable. Since parallel fibers constitute center portions of the yarn and provide rigidity, the pile has high pile erectility and pile uprightness (erectility of pile) is favorable. In addition, the air spinning yarn is structured to have less fluff than conventional ring spun yarn. Combining the air spinning yarn with the twisting of untwisted two ply yarn according to the first embodiment results in even more bulky hand and reduced drop fluff and therefore produces an optimal spun yarn. Further favorably, the air spinning yarn has superior water absorbability.
[0046] As described above, with twisted yarn created by untwisting two ply yarn according to the first embodiment, by adopting single air spinning yarn, paralleling two or more single yarns, and untwisting the yarns by a subsequent twist in an opposite direction to an initial twist direction of the single yarns, a void is created between an accumulated twist and a single yarn and favorable pile uprightness (erectility of pile), bulkiness, fluffy hand, and a dry touch are obtained. At the same time, drop fluff can be improved.
EXAMPLES
[0047] First, an evaluation method will be explained and, subsequently, three examples and evaluation results based on the evaluation method will be described.
[0048] [Evaluation Method]
(1) Evaluation of Twisted Yarn Used in Pile Yarn of Towel Cloth
[0049] A bulge of a strand of twisted yarn and an external appearance of fluff are photographed (the microscope described earlier, 200 power magnification). A thickness of the yarn is evaluated by measuring a yarn diameter (mm) at the 200 power magnification. The thicker the yarn, the higher the bulge and therefore favorable.
(2) Pile Uprightness (Erectility of Pile) of Towel Cloth: Evaluation of Pile Height
[0050] Thickness (weft ground yarn) of a fabric made of finished towel cloth is photographed at 30 power by the microscope. A height of pile which correlates with pile uprightness (erectility of pile) of the fabric is evaluated from the photograph. A center line is drawn on a central portion (ground yarn portion) of the towel cloth, a height of pile protruding on both front and back surfaces is measured at 10 locations, and an average value thereof is evaluated as a pile height (mm) of the towel cloth. The larger the value, the larger the pile definition and the bulgier the hand and is therefore preferable.
(3) Evaluation of Bulkiness of Towel Cloth
[0051] Thickness is measured according to the method described in JIS L-1096 and evaluated based on bulkiness (cm.sup.3/g) presented below.
Bulkiness (cm.sup.3/g)=thickness (mm)/weight (g/m.sup.2)×1000
[0052] Bulkiness is expressed as a volume per 1 g of toweling. The larger the value, the bulkier and, therefore, the more preferable the towel cloth. In addition, bulkiness is evaluated with respect to towel cloth after washing 30 times in addition to after washing 0 times to evaluate a change in bulkiness due to washing.
(4) Evaluation of Fluffy Hand of Towel Cloth
[0053] “Compression workload (WC) (gf.Math.cm.sup.2)” disclosed in Non-Patent Document 1 is measured and evaluated. Using compression tester KES-FB3-A (manufactured by KATO TECH CO., LTD.), towel cloth is compressed at a constant speed to obtain a compression workload WC (gf.Math.cm.sup.2) thereof. Measurements are taken at five locations and an average value thereof is presented. As described with reference to the relationship between hand and a physical quantity according to Non-Patent Document 1, fluffy feel has a strong correlation to compression workload. The measurement result indicates energy when fabric is compressed and the higher the value, the more readily the towel is compressed and the greater a bulge=fluffy feel.
(5) Evaluation of Dry Touch of Towel Cloth
[0054] Evaluation of the dry touch of the toweling is performed using the following four grades with respect to an average value of a sensory evaluation by touch of ten evaluators: dry to the touch and superior (A), good (B), normal (C), and poor (D).
(6) Evaluation of Drop Fluff Property Due to Washing of Towel Cloth
[0055] Drop fluff due to washing is evaluated according to the method described in JIS L-0217, 103. A drop fluff rate (%) is obtained according to the following equation, where the smaller the value, the smaller the amount of drop fluff and therefore favorable.
Drop fluff rate (%)=(weight of drop fluff after washing (W)/(weight of towel before washing (W.sub.0))×100
(7) Evaluation of Drop Fluff by Sellotape (Cellophane Tape) of Towel Cloth
[0056] Drop fluff by Sellotape (cellophane tape) is evaluated according to a fluff adhesion test method of the QTEC test method (QTEC-NTM1). To summarize the test, Sellotape (cellophane tape) is attached to a lower part of a 4.0-Kpa heavy bob (weight), and an adhesive surface of the tape is brought into contact with a front surface of the towel cloth for a duration of 5 seconds. The tape is then peeled off from the towel coth and a lack or abundance of fluff loss that is adhered to the tape is visually determined using the following five grades: grade 5 (no fluff loss, superior), grade 4 (minimal fluff loss, favorable), grade 3 (normal fluff loss), grade 2 (fluff loss present, poor), grade 1 (lot of fluff loss, inferior).
First Example
[0057] (1) Manufacturing Method and Evaluation of-Towel Cloth
A. Twisting
[0058] As pile yarn, a single yarn of a core-in-sheath air spinning yarn with a yarn count of 40 was prepared in which a center portion (core) of the spun yarn has 20 to 30% of a parallel fiber portion and an outer layer portion (sheath) has 80 to 70% and which had been twisted 18 times/inch by a Z-twist. Next, two of the initially twisted single yarns were paralleled and then untwisted by subsequently twisting the single yarns with a yarn twister in an S-twist in an opposite direction to the initial twist at 9 twists/inch (subsequent twist ratio: 50%).
First Comparative Example
[0059] A single yarn of air spinning yarn was woven, processed, and finished in accordance with the first example with the exception of using yarn simply subjected to paralleling without being untwisted as a pile yarn. Thickness of the finished towel cloth was 3.80 mm and weight was 430 g/m.sup.2. In addition, thickness after washing the finished towel cloth 30 times was 3.70 mm and weight was 430 g/m.sup.2. An evaluation was performed in accordance with the first example of which a result is described in Table 1.
Second Comparative Example
[0060] A single yarn was untwisted, woven, processed, and finished in a similar manner to the first example with the exception of using a single ring spun yarn with a yarn count of 40 and twisted in a Z-twist 18 times/inch. Thickness of the finished towel cloth was 3.03 mm and weight was 415 g/m.sup.2. Thickness after washing the finished toweling 30 times was 2.97 mm and weight was 415 g/m.sup.2. An evaluation was performed in accordance with the first example of which a result is described in Table 1.
B. Processing of Towel Fabric
[0061] Next, a fabric was woven with a towel loom using the untwisted yarn count 40 two ply yarn as a warp pile yarn, a yarn count 24 two ply yarn of ring spun yarn as a warp ground yarn, and a yarn count 16 two ply yarn of ring spun yarn as a weft ground yarn. The woven fabric was finished by performing desizing and scouring, bleaching, and whitening with a fluorescent dye under normal processing conditions for cotton.
TABLE-US-00001 TABLE 1 Evaluation 3 Bulkiness Evaluation 4 Evaluation 6 Evaluation 7 Evaluation 1 (cm.sup.3/g) Compression Drop fluff Fluff loss by Yarn Evaluation 2 Parenthesized: workload rate due cellophane thickness Pile height after washing WC Evaluation 5 to washing tape (mm) (mm) 30 times (gf .Math. cm.sup.2) Dry touch (%) (grade) First 8 to 10 3.79 10.62 (10.21) 4.68 A 0.0082 4 to 5 example First 4 to 5 3.30 8.84 (8.60) 3.80 C 0.0110 3 to 4 comparative example Second 8 to 10 2.53 7.30 (7.16) 3.49 C to D 0.0307 2 comparative example
(2) Evaluation Result
A. Evaluation of Twisted Yarn
[0062] As is apparent from the twisted yarn photograph (200 power magnification) in
B. Evaluation of Towel Fabric
[0063] As is apparent from Table 1, the towel cloth according to the first example is excellent towel cloth with a good pile uprightness (erectility of pile), superior bulkiness, fluffy hand, dry to the touch, and low fluff loss. More specifically, the pile height was 3.79 mm which is a 15% increase from the first comparative example and a 49.8% increase from the second comparative example. In a similar manner, bulkiness was 10.62 cm.sup.3/g which is a significant increase by a factor of 1.2 to 1.5 and compression workload was 4.68 gf.Math.cm.sup.2 which is also a significant increase by 23% to 34% with respect to the first and second comparative examples. The dry touch corresponded to a highest level in terms of sensory evaluation. In addition, the rate of drop fluff due to washing was lower by 25% to 73%. Fluff loss due to a Sellotape (cellophane tape) was Grades 4 to 5 which indicate that the towel cloth is least susceptible to fluff loss. Bulkiness after washing 30 times is 10.21 cm.sup.3/g which is almost unchanged from prior to the washing and a bulky, fluffy hand was maintained even after washing. Furthermore, with respect to water absorbability, as a result of dripping about 0.7 ml of water to the surface of a towel using a dropper on hand, it was found that the water was absorbed at a rate of 1 second or less and that the towel has superior water absorbability.
[0064] The finished towel was woven into a hand towel and a practical trial was performed. First, the bulky and fluffy hand was pleasant and generated plenty of a luxurious feel. In addition, after sweating, the towel did not become sticky and was dry to the touch and pleasantly sweat-absorbent. Furthermore, there was hardly any drop fluff from the towel when washed and fluff was not transferred to other clothes, making the hand towel extremely pleasant.
[0065] On the other hand, the first comparative example is inferior overall to the first example and particularly inferior with respect to bulkiness, fluffy hand, and dry touch. The second comparative example is considerably inferior overall and, in particular, inferior in terms of bulky hand, dry touch, drop fluff property, and fluff loss.
Second Example
[0066] As pile yarn, a single yarn of a core-in-sheath air spinning yarn with a yarn count of 24 according to the first example was prepared which had been twisted 13 times/inch by a Z-twist. Next, two of the initially twisted single yarns were paralleled and then untwisted by subsequently twisting the single yarns with a yarn twister in an S-twist in an opposite direction to the single yarns at 6 twists/inch (subsequent twist ratio: 46%). The fabric was desized and scoured, bleached, and finished according to the first example with the exception of being woven into a fabric using the untwisted yarn count 24 two ply yarn as a warp pile yarn, a yarn count 20 two ply yarn of ring spun yarn as a warp ground yarn, and a yarn count 14 two ply yarn of ring spun yarn as a weft ground yarn. Thickness of the finished towel cloth was 5.98 mm, weight was 572 g/m.sup.2, and bulkiness was 10.45 (cm.sup.3/g). The towel cloth was stitched into a bath towel to be worn. Hand of the worn towel was bulky and extremely fluffy. In addition, when used after taking a bath, the pleasant blue towel was dry to the touch and had good water absorbability. Furthermore, even when washed, there was hardly any transfer of fluff from the comfortable towel to other clothes. Moreover, the initial bulkiness, fluffy hand, and dryness to the touch were hardly diminished due to washing and the towel with hand was durable.
Third Example
[0067] As pile yarn, a single yarn of a core-in-sheath air spinning yarn with a yarn count of 80 according to the first example was prepared which had been twisted 25 times/inch by a Z-twist. Next, two of the initially twisted single yarns were paralleled and then untwisted by subsequently twisting the single yarns with a yarn twister in an S-twist in an opposite direction to the single yarns at 12 twists/inch (subsequent twist ratio: 48%). The fabric was desized and scoured, bleached, and finished according to the first example with the exception of being woven into a fabric using the untwisted number 80 two ply yarn as a warp pile yarn, a number 30 two ply yarn of ring spun yarn as a warp ground yarn, and a yarn count 18 two ply yarn of ring spun yarn as a weft ground yarn. The finished towel cloth had a large pile uprightness (erectility of pile) and thickness was 3.21 mm, weight was 305 g/m.sup.2, and bulkiness was 10.52 (cm.sup.3/g). The towel cloth was then stitched into a face towel to be worn. Hand of the worn towel was thin but bulky and extremely soft and fluffy. In addition, the towel was dry to the touch after washing the face and had a good wiping feel. Furthermore, there was hardly any drop fluff and transfer of fluff from the face towel to other clothes due to washing and the face towel had excellent wearability. Moreover, hand hardly changed due to washing and the face towel was usable over a long period of time.
[0068] As described above, the present invention enables towel cloth to be obtained which has favorable pile uprightness (erectility of pile) and bulkiness, and has both a fluffy hand and a dry touch, and moreover which hardly drops fluff which were not obtainable by conventional art.
First Aspect:
[0069] Towel cloth constituted by locking a pile yarn to a ground yarn, wherein
[0070] the pile yarn has two or more single yarns initially twisted in a same direction, and
[0071] the pile yarn is structured such that the two or more single yarns are integrally twisted in an opposite direction to the initial twist.
Second Aspect:
[0072] The towel cloth according to the first aspect, wherein the single yarn is constituted of air spinning yarn.
Third Aspect:
[0073] The towel cloth according to the first or second aspect, wherein a yarn count of the single yarn is 8 to 120.
Fourth Aspect:
[0074] The towel cloth according to any one of first to third aspects, wherein the single yarn is constituted of cotton at a mixing ratio of 60 wt. % or higher.
Fifth Aspect:
[0075] The towel cloth according to any one of first to fourth aspects, wherein weight is 100 to 1000 g/m.sup.2.
Sixth Aspect:
[0076] A manufacturing method of towel cloth constituted by locking a pile yarn to a ground yarn, the manufacturing method of towel cloth including the steps of:
[0077] paralleling two or more single yarns initially twisted in a same direction;
[0078] untwisting the two or more single yarns by a subsequent twist in an opposite direction to the initial twist and forming a pile yarn; and
[0079] locking the pile yarn to a ground yarn in which a warp ground yarn and a weft ground yarn intersect each other.