JP2009160212A - Towel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyester synthetic fiber towel which is excellent in absorptive capacity and dries quickly; more specifically, to provide a towel which quickly removes moisture from a body after bathing and wet hair after a shampoo, suppresses reproduction and proliferation of unwanted bacteria even after repeatedly used, is hygienic, and is excellent in wiping performance. <P>SOLUTION: The towel includes 30 to 60 wt.% of complex ultrafine synthetic fiber (A) where a single fiber fineness is 0.001 decitex to <1.0 decitex and 70 to 40 wt.% of blended synthetic fiber (B) where a single fiber fineness is ≥1.0 decitex to ≤5.0 decitex. The fiber has a multilayer structure and has an absorptive evaluation index 900. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a towel excellent in water absorption and quick drying, and more specifically, removes moisture from the body after bathing and wet hair after shampooing, and suppresses the proliferation and propagation of various bacteria even in repeated use. It relates to a towel that is hygienic and excellent in wiping.

  In recent years, with the spread of showers, super absorbent towels called so-called morning shan towels have been put into practical use. Many of the conventional superabsorbent towels are knitted fabric towels using yarns of chemical fibers such as rayon.

  In general, cotton is the basic material because of its high water absorption and the ability to wipe off moisture on the body, but on the other hand, the hardness of the towel pile and the unevenness of the surface of the towel. Inferior in terms of friction, lightness, quick-drying, etc., and further unsanitary in repeated use.

  In addition, attempts have been made to use an enzyme solution as a method for improving the water absorption of cotton yarn cloth (see, for example, Patent Document 1). In this method, a cotton cloth is dipped in a mixture of a desizing solvent, a scouring solvent, and a bleaching solvent to impregnate the cotton cloth with this mixture, then impregnated with an enzyme solution, and then subjected to a deenzyme treatment to absorb water from the cotton fibers. It improves the performance.

  On the other hand, a method for making a fiber material highly absorbent using a highly water-soluble polymer is also proposed (see, for example, Patent Documents 2 and 3). However, the morning Shantowel, which is said to have the conventional high water absorption, utilizes the water absorption of the chemical fiber itself and the penetration water retention of the space between the knitted fabric structures, and is more expensive than a cotton towel. Not only does it have a soft feel. Moreover, although the cotton fabric which improved the water absorption of the cotton fiber which performed the enzyme treatment mentioned above improves the water absorption of a cotton fiber significantly and softens, the fall of fiber strength is inevitable.

In addition, the conventional method of imparting water absorbency by applying a superabsorbent polymer is performed by spraying a superabsorbent polymer powder, so that the water absorbability of the sprinkled fiber material is remarkably increased. There was a problem that the fiber material could not be restored to the state before water absorption once gelled and water was absorbed.
JP 2003-167366 A JP-A 62-53479 JP 2001-280075 A

  An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a polyester synthetic fiber towel excellent in water absorption and quick drying, and more specifically, a body after bathing Another object of the present invention is to provide a hygienic towel with excellent wiping property that quickly removes moisture from wet hair after shampooing and suppresses the growth and propagation of germs even during repeated use.

In order to solve the above problems, the present invention employs the following configuration. That is,
(1) 30 to 60% by weight of nylon having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex and polyester composite ultrafine synthetic fiber (A), and a round cross section of 1.0 dtex or more and 5.0 dtex or less A towel having a multilayer structure and a water absorption evaluation index of 900, comprising a fabric containing 70 to 40% by weight of the mixed polyester synthetic fiber (B) having a modified cross-section yarn.

  (2) The towel according to (1), wherein the composite ultrafine synthetic fiber (A) has a sea-island structure or a peel-type structure and has been subjected to a sea component removal treatment or a peel treatment.

  (3) The towel according to (1) or (2), wherein the mixed fiber synthetic fiber (B) is a mixed fiber having a round cross section and an irregular cross section, and is woven.

  (4) The towel according to any one of (1) to (3), wherein the fabric contains a pyridine antibacterial agent.

  ADVANTAGE OF THE INVENTION According to this invention, the polyester synthetic fiber towel excellent in water absorption and quick-drying which was not in the past can be provided, and more specifically, moisture quickly from the body after bathing and wet hair after washing. Thus, it is possible to provide a towel that is hygienic and excellent in wiping property, which suppresses the proliferation and propagation of germs even in repeated use.

  In the towel of the present invention, ultrafine synthetic fibers (A) and synthetic fibers (B) are used as constituent fibers.

  The ultrafine synthetic fiber (A) is selected from a composite synthetic fiber of nylon and polyester, and a polyester fiber having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex. The single fiber fineness of each of nylon and polyester constituting the composite synthetic fiber needs to be 0.001 dtex or more and less than 1.0 dtex. Also, the polyester fiber needs to satisfy the requirement that the single fiber fineness is 0.001 dtex or more and less than 1.0 dtex. In any case, it is preferably 0.005 dtex or more and 0.9 dtex or less, and more preferably 0.01 decitex or more and 0.8 dtex or less. If it is less than 0.001 dtex, it will be too thin, resulting in breakage of single yarn due to friction between the towel surface and the skin surface during wiping, resulting in poor durability. In addition, in the case of 1.0 dtex or more, as a towel material for sucking up and removing moisture adhering to the hair surface, the monofilament is thick and the inter-fiber surface area becomes extremely small, and the capillary phenomenon cannot be effectively used. The water absorption is inferior.

  Moreover, it is necessary that the ultrafine synthetic fiber (A) is mixed in a proportion of 30 to 60% by weight of the whole towel. When it is less than 30% by weight, the inter-fiber area of the ultrafine fibers is extremely reduced, the capillary phenomenon is lowered, the water absorption becomes low, and the effect is hardly exhibited. On the other hand, if it exceeds 70% by weight, the entire fabric becomes too soft, the dimensional stability is poor, and it becomes difficult to wipe the body, resulting in practical discomfort.

  The ultrafine synthetic fiber (A) used in the present invention peels nylon and polyester from the sea-island composite fiber of nylon and polyester by eluting sea components or in a peelable composite fiber made of nylon and polyester. Can be obtained. In any type, sea components can be eluted or composite fibers can be peeled off by chemical treatment after weaving. The fineness of the fiber before elution or peeling is, for example, about 100 dtex to 1000 dtex obtained by twisting a yarn of about 56 dtex after double twist false twisting, preferably 200 dtex to 600 dtex. . When the yarn fineness is less than 100 decitex, the swell of the fabric and the softness of the fabric surface are poor, and the water absorbability is poor. On the other hand, when it exceeds 1000 dtex, there is a tendency that the dough is too swollen and does not have a tight waist.

  The blended polyester synthetic fiber (B) is a blended yarn having a round cross section and an irregular cross section, and the single fiber fineness as the blended yarn is 1.0 dtex or more and 5.0 dtex or less. The single fiber fineness is preferably 1.0 dtex or more and 4.0 dtex or less, more preferably 2.0 dtex or more and 3.5 dtex or less. If it is less than 1.0 decitex, the entire fabric will not be soft, and the surface area between fibers will be extremely small as a towel material that sucks and removes moisture adhering to the surface of the hair, and the capillary phenomenon cannot be used effectively. Water absorption is inferior. Moreover, when it exceeds 5.0 decitex, it becomes a hard texture on the whole and is unpreferable. Moreover, the mixing rate of the synthetic fiber (B) needs to be mixed at a ratio of 70 to 40% by weight of the entire towel. This synthetic fiber (B) contributes to towel hardness, capillarity and water absorption due to inter-fiber voids. When it exceeds 70% by weight, it becomes a hard texture as a whole, and when it falls below 30% by weight, the whole This is not preferable because it becomes too soft and dimensional stability is poor.

  In the mixed yarn having a round cross section and an irregular cross section, examples of the irregular cross section include a hexagonal cross section and an octagonal cross section.

  The fineness of the mixed yarn is preferably 50 dtex to 600 dtex, and more preferably 100 dtex to 600 dtex. When the used yarn fineness is less than 150 decitex, the swell of the fabric and the softness of the fabric surface are poor, and the amount of water absorption may be lacking. On the other hand, if it exceeds 600 decitex, the fabric tends to be excessively swollen and do not have a stretchy waist.

  Moreover, in order to form a space | gap between fibers, it is preferable to use a false twist crimped yarn. As the false twisting method, various types of conventional pins, frictions, belts, and the like are used, and the normal false twisting conditions of one heater are preferably used as the processing conditions. In the subsequent twisting, it is preferable to additionally twist a twist of a sweet twist level of 100 t / m to 600 t / m using a twister.

  In the weaving of the fabric of the present invention, the mixed polyester synthetic fiber (B) is used as a warp, and the ultrafine synthetic fiber (A) is used as a weft. A general fly shuttle, water jet loom, air jet loom, rapier loom, A bullet loom is used. More preferably, rapier looms and bullet looms are used because there are many cases of thick fineness standards.

  The multi-layered structure of the towel fabric of the present invention includes a waffle weave with a rough texture with a texture similar to that of a waffle confectionery that does not easily lose thread, a special structure such as a rib structure, a waffle structure, and a honeycomb weave. The convex portions on the surface of the fabric can produce a soft texture due to the ultrafine fibers, and the concave portions can be preferably used because they use thick fibers to exhibit capillary action and quickly absorb moisture and sweat.

  Moreover, the towel cloth of this invention has the performance of 900 or more as an absorption evaluation index | exponent by setting it as said structure.

  Also, in terms of drying speed, it was spread and immersed in water at 20 ° C. ± 2 ° C., sufficiently absorbed, then taken out and removed in a household washing machine dehydrator at a weight ratio immediately after dehydration for 1 minute, for example in Example 1. If present, 62% of the water has already disappeared, and after 6 minutes, an advantage equivalent to the dry state is exhibited.

  In the present invention, in addition to the ultrafine synthetic fiber (A) and the mixed polyester synthetic fiber (B), other synthetic fibers that can be made ultrafine can be used. Examples of fibers that can be made ultrafine include sea-island synthetic fibers and peelable synthetic fibers made of a composition other than the ultrafine synthetic fibers (A) of the present invention. In the case of sea-island synthetic fibers, as island components, for example, polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyurethane fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, and the like are used. However, among these, polyester fibers comprising polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and copolymers thereof are preferable. Furthermore, a polyester fiber having a small change in the washing dimension of the fabric after being ultrafine is more preferable. Examples of the sea component include polyester-based modified resins, polylactic acid-based resins, and polyvinyl alcohol-based resins. Among them, polyester-based modified resins are preferable because they have good compatibility with island components and are easy to produce yarns. Ultrafinening can be easily obtained by dissolving sea components in, for example, an alkaline solution, and an ultrafine single fiber can be obtained by performing an acid treatment thereafter.

  The towel cloth of the present invention preferably contains a pyridine antibacterial agent. Examples of pyridine antibacterial agents include 2-chloro-6-trichloromethylpyridine, 2-chloro-4trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6- (2-furylmethoxy) pyridine, At least one selected from (4-chlorophenyl) pyridine, 2-pyridylthiol-1-oxide zinc and di (2-pyridylthiol-1-oxide) is preferably used. As the antibacterial performance of the towel cloth, it is preferable that the difference in the number of bacteria increased or decreased (passed) in the antibacterial evaluation method. As an example of the antibacterial processing method, a method in which a pyridine antibacterial agent having a specific molecular weight is adsorbed on a fiber by dry heat prescription or wet heat treatment can be mentioned.

  Since the towel of this invention is excellent in water absorption and quick-drying property, it is preferably used as what is called a morning towel.

Evaluation used in the examples was evaluated by the following method.
"Water absorption (Bilec method)"
Conforms to JIS L 1096 “General Textile Test Method”.

Five test pieces are taken in the vertical and horizontal directions with a size of 1 cm × about 20 cm, one end of the test piece is fixed, and about 2 cm of the other end is immersed in distilled water at 20 ± 2 ° C. The distance (mm) due to capillary action after 10 minutes is measured (reading up to 1/2 mm), and expressed as an average of 5 times each in the vertical and horizontal directions (up to an integer number)
"Maximum water absorption speed and water absorption at the time of maximum water absorption speed"
In accordance with JIS L 1907.7.3, using a water absorption measuring device, five test pieces having a diameter of 60 mm were collected, the head difference of the water absorption measuring device was adjusted to 30 mm ± 1 mm, and the water absorption tube and the glass filter plate were After adjusting to be horizontal, the water absorption tank is filled with water, and then water is supplied to the water absorption pipe up to zero. Next, the donut plate is placed on the glass filter plate, the sample holder with the test piece attached to the lifting device is installed, and the sample holder is lowered to the glass filter plate surface at a speed of 74 mm / min ± 5 mm / min. Then, after the water absorption measuring device senses water absorption, the water absorption amount per second is measured to 0.01 ml, and the water absorption speed is obtained by the following equation. Further, the water absorption amount at the time of the maximum water absorption rate and the maximum water absorption rate is obtained from the relationship between the water absorption amount and the water absorption rate at each time.
Water absorption speed at time n seconds = (Water absorption at time n + 1−Water absorption at time n seconds) ÷ Measurement interval of water absorption These average values are rounded to three decimal places according to JIS Z 8401. In this case, the initial maximum value is the “maximum water absorption rate”, and the water absorption amount at that time is used as the “water absorption amount at the time of the maximum water absorption rate”.
"Drainage (water absorption)"
Conforms to JIS L 1907 “Water absorption rate”.

  Using a roll squeezer, three pieces of 75 mm x 75 mm samples were collected, the test piece mass was measured to 1 mg, and a test piece with a weight attached to one end sufficient to allow the test piece to settle in water was immersed in water. The water level is adjusted so that the upper end of the test piece comes to 50 mm below the water surface, and soaked for 20 minutes. After soaking, the test piece is taken out of the soaking tank, sandwiched between two dry filter papers, passed through a roll squeezer at a surface speed of 25 mm / s, and immediately measured to a test piece mass of 1 mg.

  The water absorption is calculated by the following formula, and the average value is rounded to an integer according to JIS Z 8401.

Water absorption rate (%) = {(m2-m1) / m1} × 100
m1: Mass of test specimen before water absorption (mg)
m2: Mass of the test piece after absorbing water and squeezing with a roll squeezer (mg)
"Water absorption evaluation index"
2545 × Maximum water absorption rate (ml / s) + 1411 × Water absorption at the time of maximum water absorption rate (ml) +79
"Wetting speed"
Referring to JIS L 1907 “Water absorption test method”, take 3 test pieces of about 15cm x about 15cm and make a table so that extra tension is not applied to the frame or beaker with a diameter of 10cm or more. Place it so that its surface is horizontal. Next, it fixes to the holder 5 cm away from the surface of the test piece which set | placed the horizontal tip of the injection needle (capacity | capacitance of the syringe 1cc) adjusted so that distilled water (room temperature) might be dripped drop by drop. Measure the water absorption time from when one drop of water is dropped on the test piece until when the water drop on the test piece no longer makes a special reflection. The water absorption time is measured in the same manner at any three locations, and the average value of the three images is used. The dropping amount is about 0.005 cc, and as a rule, TERUMO type 26G is used as the injection needle.
"Drying speed (drying)"
Referring to JIS L 1096 “General Textile Testing Method”, three samples of 40 cm × 40 cm samples were collected, then spread and immersed in water at 20 ° C. ± 2 ° C. The weight of the test piece which was dehydrated for 1 minute by the dehydrator of the washing machine was measured.

And the amount of water reduced by dehydration for 1 minute / the amount of water initially absorbed (the weight of the fabric after being sufficiently immersed in water at 20 ° C. ± 2 ° C.−the weight of the fabric before water is absorbed) ) Next, dehydration was performed for 6 minutes, and the amount of water reduced by the 6-minute dehydration / the amount of water initially absorbed was determined.
[Antimicrobial evaluation method]
A unified test method was adopted as the evaluation method, and Staphylococcus aureus clinical isolates were used as test cells. The test method poured the said test microbe into the sterilization test cloth, measured the number of viable bacteria after 18-hour culture | cultivation, calculated | required the number of bacteria with respect to the number of propagation bacteria, and followed the following reference | standard.
Under the condition of log (B / A)> 1.5, log (B / C) was defined as the difference in the number of bacteria increase / decrease, and 2.2 or more was determined as acceptable. However, A is the fungus dispersed and collected immediately after inoculation of the unprocessed product, B is the number of fungus dispersed and recovered after 18 hours of incubation of the unprocessed product, and C is the number of fungus dispersed and recovered after 18 hours of incubation of the processed product. . Example 1
A 167 decitex-48 filament polyester blended synthetic fiber-processed yarn using a round fiber made of polyester and a fiber having an irregular cross section is used as the warp yarn, and the periphery of the star-shaped nylon fiber is used as the horizontal yarn. A specially designed waffle-like woven fabric was woven using 210 dtex yarn, which was a double twist false twisted double twisted yarn (200 t / m), using 56 dtex yarn surrounded by polyester fibers having a triangular cross section.

The weaving density was 124 pieces / 2.54 cm in length and 63 pieces in width / 2.54 cm, and the weft yarn was contained in a mixing ratio of 40% by weight. This was subjected to scouring, drying, intermediate setting, alkali treatment, acid treatment, dyeing, and antibacterial treatment with a pyridine antibacterial agent. The weft single yarn fineness after division was a 0.3 decitex ultra-fine yarn mixed fabric.
Example 2
The warp yarn is a 167 decitex-48 filament polyester blended synthetic fiber yarn using a round fiber made of polyester and a fiber having an irregular cross section, and the weft yarn is 80d-32 filament polyester and nylon. A specially structured waffle-like woven fabric was woven using double-twisted twisted twisted yarn (200 t / m) of mixed sea-island split split yarns and an actual fineness of 350 dtex. The weaving density was 124 / 2.54 cm in length and 55 in the weft / 2.54 cm, and the weft was contained at a mixing ratio of 40% by weight. This material was subjected to scouring, drying, intermediate setting, alkali treatment, dyeing, and antibacterial processing with a pyridine antibacterial agent. The weft yarn from which sea components were dissolved and removed by alkali weight reduction was an ultrafine yarn having a single yarn fineness of 0.09 dtex.

Comparative Example 1
Using the same polyester blended synthetic fiber processed yarn as in Example 1 for the warp yarn, 167 decitex-48 filament yarn of round cross-section yarn was twisted to the weft yarn, and two actual twists (200 t / m) A specially structured waffle-like woven fabric was woven using 350 dtex yarn. The weaving density is vertical 124 / 2.54cm, horizontal 55 / 2.54cm. This product was subjected to scouring, drying, intermediate setting, dyeing, and antibacterial finishing by ordinary processing.

  As shown in Table 1, in Examples 1 and 2, the present invention possessed a high water absorption (Bilek method) of 75 cm to 128 cm, and the water absorption evaluation index was 989,1068, which was found to be comfortable. In addition, the wetting speed and drainage are almost the same as those of a cotton towel. At the drying speed, the towel of Example 1 has already lost 62% (wt%) of water by weight immediately after dehydration, and after 6 minutes. Is an excellent antibacterial fabric that has the same advantage of being dry. In Comparative Example 1, the results were poor in water absorption and wetting speed.

Claims (4)

Selected from a composite fiber of nylon and polyester having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, and a polyester fiber having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, 30 to 60% by weight of ultrafine synthetic fiber (A) and 70 to 40% by weight of mixed polyester synthetic fiber (B) of round cross-section yarn and deformed cross-section yarn of 1.0 dtex or more and 5.0 dtex or less A towel comprising a dough to be contained, the dough forming a multilayer structure, and having a water absorption evaluation index of 900 or more. The towel according to claim 1, wherein the composite ultrafine synthetic fiber (A) has a composite having a peelable structure and has been subjected to a peeling treatment. The towel according to claim 1 or 2, wherein the composite ultrafine synthetic fiber (A) is a false twisted yarn. The towel according to any one of claims 1 to 3, wherein the dough contains a pyridine-based antibacterial agent.