JP2003064555A - Piled composite spun yarn fabric excellent in moisture wiping property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-grade wiping fabric keeping a wiped surface clean without remaining droplet marks or blot marks. SOLUTION: The fabric excellent in moisture wiping property is obtained by using piled composite spun yarns piled a synthetic fiber multifilament, having <=1 dtex single filament fineness, with spun yarns in the same twisting direction of that of the spun yarns with <=800 T/M twist count and the fabric has water absorptivity (%)/water absorbing rate (s) of >=0.50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping cloth having extremely excellent water absorbency and wiping durability.

[0002]

2. Description of the Related Art A cotton towel has been a typical representative of wiped cloth. The cloth made of cotton has excellent water absorption and water retention due to the characteristics of the fiber. However, since cotton has a large single-filament fineness, it is not only inferior in wiping performance for dust, etc., but also when wiping glass, etc., short fiber scraps tend to remain on the wiped surface (self-generated dust), so improvement is required. It was being done.

Fabrics using a composite twisted composite spun yarn obtained by combining regenerated cellulose and cotton exist as commercial products. The aim is to reduce the amount of dust generation by combining it with rayon, which is a long fiber, but in the twisted yarn structure, rayon exists mainly in the core yarn part, and the fibers that come into contact with the wiping surface are mainly cotton. However, the combined effect was small and the dust reduction effect was small. Although it is possible to have a large amount of rayon on the surface, the wiping performance has not been improved so much because the cost is high and it is difficult to reduce the single yarn fineness.

On the other hand, there have been proposed many wiping cloths which use ultrafine fibers of polyester filaments. The ultrafine filaments have a relatively small curvature with respect to foreign matter such as dust, and the wiping effect is improved. However, synthetic fibers, especially polyester, are less hydrophobic than natural fibers because they are hydrophobic, and in a wiping cloth consisting only of them, water is only present in the gaps between fiber bundles, and the water absorption is insufficient. Met.
Therefore, when wiping a wet glass cup or the like, a lot of water squeezing work had to be done, and the efficiency was very poor. Further, attempts have been made to use false twisted textured yarns and modified cross-sections for the purpose of improving the wiping-off property, but only with these, the water absorption and the wiping-off property are limited, and the effect is insufficient.

[0005]

DISCLOSURE OF THE INVENTION As a result of earnest research in view of such a situation, the present inventors have found that when the water is wiped off, the fiber wastes are not left on the wiped surface as much as possible, and the water absorption is excellent. An object of the present invention is to provide a compound-twisted composite spun yarn fabric which has a water-retaining property, which requires less number of times of squeezing water and can wipe off fine dust.

[0006]

That is, the present invention has the following constitution. 1. A fabric comprising a multi-filament composite spun yarn of a synthetic fiber multifilament having a single yarn fineness of 1 dtex or less and a spun yarn, wherein the water absorption rate (%) / water absorption rate (second) of the fabric.
Is 0.50 or more, and is a twisted and twisted composite spun yarn fabric excellent in water wipeability. 2. Mixed twisted and twisted composite spun yarn having a twist number of 800 T / M or less in the same twist direction as the spun yarn, wherein the twisted and twisted composite spun yarn is excellent in water-wipeability. . 3. Mixed twisted twisted composite spun yarn having 50% or more of synthetic fiber multifilaments on the surface of the mixed twisted twisted composite spun yarn, which is excellent in water-wipeability. 4. 10-80% by weight of the plied-twisted plied composite spun yarn is composed of hydrophilic short fibers, wherein the plied-twisted composite spun yarn fabric has excellent water-wipeability. 5. 2. The multi-filament composite spun yarn fabric excellent in water wiping property according to 1, wherein the synthetic fiber multifilament is composed of a filament having a polygonal cross section. 6. 2. The synthetic twisted composite spun yarn fabric excellent in water-wipeability according to 1, wherein the synthetic fiber multifilament is a false twist textured yarn.

The present invention will be described in detail below. It is desirable that the composite twisted composite spun yarn constituting the wiped fabric of the present invention include a multifilament having a single yarn fineness of 1 dtex or less. If the single yarn fineness is larger than 1 decitex, not only the wiping effect is significantly deteriorated but also the water diffusivity is deteriorated.
Water easily remains on the wiped surface. A more preferable range is 0.5 decitex or less, and further 0.4
It is less than decitex, and more preferably 0.3 decitex or less. As the method for producing the raw yarn, either single-component spinning or composite spinning may be employed, but the direct spinning method is preferably employed in view of production cost and environmental problems. In that case, 0.1 decitex or more is preferable from the viewpoint of multifilament spinning operability.

The ply-twisted composite spun yarn in the present invention is typically obtained by ply-twisting a spun yarn mainly composed of short fibers produced through a spinning process and a filament.
As the spun yarn, a spun yarn produced through an ordinary spinning process can be used, and roving yarn in the roving process or single yarn or twin yarn in the fine spinning process or triplets is used. Further, a part of the spun yarn may be a finely spun and twisted yarn containing filaments.

The twisted and twisted composite spun yarn of the present invention is a synthetic fiber multifilament having a single yarn fineness of 1 decitex or less and a spun yarn in the same twist direction as that of the spun yarn by using a twisting machine and 800 T / M or less. It is desirable to ply twist in the range of.
As the twisting machine, an Italian twisting machine classified as a general up twister, a large up twister, a ring twisting machine classified as a down twister, a plying machine, or a double twister can be used. Above all, a plying machine that is excellent in versatility, can be set up regardless of the form of the supplied yarn, is easy to ply with 2 to 4 thick fibers, and has a relatively low equipment cost preferable. However, it is necessary to pay attention to the selection of traveler, setting of coil pitch, daily wear control of ring inner surface, lubrication, etc. of the ply-twisting machine, but if these items are properly implemented, a high-quality ply-twist composite It is possible to obtain spun yarn. When the synthetic fiber multifilament and the spun yarn are twisted together, it is preferable that they are twisted in the same twist direction as the spun yarn and within a twist number range of 800 T / M or less. In the spun yarn produced through the spinning process, a single yarn is generally twisted in the Z twist direction, and in the case of a twin yarn, it is twisted in the S direction as the upper twist in the S direction in the range of 500 to 1500 T / M. . Therefore, when the yarns are twisted in the opposite direction, not only the short fibers of the spun yarn are separated and come apart, but also the strength is reduced, and when the yarns are twisted, the yarn breaks frequently, and the short fibers become cotton wool. Work environment is deteriorated and production efficiency is significantly reduced. Furthermore, the wiping cloth composed of the composite twisted composite spun yarn that is twisted in the opposite direction is not good in quality because short fibers fall out or thread waste is left on the wiped surface. The twist direction that is the same as the spun yarn means that the spun yarn is a twin yarn,
In the case of a true child, it means the upper twist.

Therefore, the spun yarn is prevented from being separated and separated by ply-twisting in the same twist direction as the spun yarn and in a twist number range of 800 T / M or less, and the synthetic fiber multifilament is a ply-twisted composite spun yarn. The surface of the composite is migrated so as to cover the surface of the composite to form a composite twisted composite spun yarn suitable for the present invention. This migration is probably due to the difference in elongation between the spun yarn and the synthetic fiber multifilament. The twist number range is set according to the texture of the spun yarn or synthetic fiber multifilament used or the planned wipe cloth, but if the twist number becomes too high, the synthetic fiber multifilament in the composite twisted composite spun yarn It is considered that the twist number range of 600 T / M or less is more preferable because the gap between the two becomes small and the water absorption is poor.

The wiping cloth of the present invention preferably has a water absorption rate (%) / water absorption rate (second) of 0.50 or more. The ability to wipe off water is proportional to the water absorption rate (ratio of the amount of water absorption to its own weight) of the cloth and is inversely proportional to the water absorption rate. The higher the water absorption rate and the faster the water absorption rate, the better the water supply capacity of the cloth. In the present invention, it was found that when the water absorption rate / water absorption rate is 0.50 or more, excellent water wiping ability is exhibited. It is preferably 0.75 or more, and more preferably 1.00 or more. In addition, a cloth having these properties can be preferably used, particularly when it is used as a wiping cloth, since the functionality is sufficiently exhibited.

The composite twisted composite spun yarn used in the wiping cloth of the present invention preferably has synthetic fiber multifilaments on 50% or more of the surface thereof. The presence in 50% or more of the surface means that the proportion of the number of constituent fibers of the outermost layer in the cross-sectional photograph of the composite twisted composite spun yarn is 50% or more, and the composite yarn is plied in the same twist direction as the spun yarn. As a result, a composite twisted composite spun yarn having such a form can be obtained. However, in the twisting direction opposite to that of the spun yarn, the spun yarn separates, disperses, and the spun yarn appears on the surface of the composite twisted composite spun yarn, and when the ratio of the synthetic fiber multifilament decreases to less than 50%, the short fiber appears on the surface. Since many of them are present, thread loss occurs during wiping, and thread waste is likely to remain on the wiping surface, which is not preferable. It is more preferably 60% or more, and further 70%
The above is more preferable.

It is preferable that the weight ratio of the synthetic fiber multifilament in the composite twist composite spun yarn used in the wiping cloth of the present invention is 10 to 60% by weight. If it is less than 10%, the proportion of short fibers increases, and thus short fibers are likely to fall off during wiping, which is not preferable. 60% again
The higher the number, the higher the proportion of multifilament,
It is not preferable because the water retention capacity tends to be poor. It is more preferably 15 to 40% by weight.

It is preferable that 10 to 80% by weight or less of the composite twisted composite spun yarn used in the wiping cloth of the present invention is hydrophilic short fiber. As long as it is a short fiber made of a hydrophilic fiber, it may be a natural fiber, a chemical fiber or a synthetic fiber, or a combination thereof. The water absorption capacity of the hydrophobic fiber is not high because it depends only on the capillary phenomenon that occurs in the interfiber gap. Therefore, if the hydrophilic fiber content in the composite twisted composite spun yarn is at least 10% by weight or more, and if it exceeds 80% by weight, the proportion of short fibers will increase, and short fibers will fall out during wiping, which is not preferable. More preferably 30 to 7
It is 0% by weight or less.

As the short fibers of the spun yarn constituting the composite twisted composite spun yarn used in the wiping cloth of the present invention, it is particularly preferable to use cotton mainly composed of cellulose, which is a mixed spun product with polyester staple. It doesn't matter. Cotton has excellent hygroscopicity and water absorbency as well as excellent hydrophilicity, and is also excellent in handleability, and is suitable for the wiping cloth of the present invention, particularly for the cloth used for the wiping cloth.
When cotton is used, it can be exposed to cotton to remove impurities and whiten the milky white fibers.

The spun yarn constituting the composite twisted composite spun yarn used in the wiping cloth of the present invention is 5-100 as an English cotton count.
It is preferable that it is a turn. The total fineness of the compound twist composite spun yarn affects not only the texture of the cloth but also the wiping performance.
If the total fineness is less than 100 in English cotton count, the texture becomes soft, but the tear strength and the water retention capacity tend to be poor, which is not preferable. Further, if it is larger than the English cotton count of 5, the cloth becomes bending and stiff, which is unfavorable because, for example, unwiping is likely to occur when wiping a glass product having an uneven pattern. More preferably, the English cotton count is 15-40.
On the other hand, the total fineness of synthetic fiber multifilament is 4
About 0 decitex to 400 decitex is preferable.
As described above, the total fineness of the synthetic fiber multifilament should be determined in consideration of the texture of the wiped cloth, the water supply performance and handleability, and the composite ratio with the spun yarn. The compound-twisted composite spun yarn used in the present invention may be not only a single yarn but also a twin-twisted or triple-twisted form.

It is preferable that the synthetic fiber multifilament constituting the composite twisted composite spun yarn used in the wiping cloth of the present invention is a fiber having a polygonal cross section. If the fiber has a polygonal cross section, the edge effect of the convex portion improves the wiping effect of dust, and further increases the surface area. In other words, the total volume of the voids formed between the single fibers increases and the water retention property increases. It can be preferably used because the ability is improved.

It is preferable that the synthetic fiber multifilament constituting the composite twisted composite spun yarn used in the wiping cloth of the present invention is a false twist crimped yarn. Both the cross-sectional deformation of the crimped yarn formed during false twisting and the formation of crimps preferably act on the present invention. The cross-sectional deformation improves the wiping property by forming edges, and the crimp formation improves the multifilament coverage of the composite twisted composite spun yarn. It is considered that the wiping performance is improved because the holding property is improved.

Further, it is also preferable to carry out hydrophilic treatment on the surface of the synthetic fiber multifilament by post-processing. Nonionic surfactants, hydrophilic condensates, and other hydrophilic processing agents can be applied by a pad cure method, a pad steam method, a pad dry method, or the like. In particular, those that impart excellent hydrophilicity and SR property to both the synthetic fiber multifilament and the hydrophilic short fiber are preferable, and Sofbon ST- manufactured by Takemoto Yushi Co., Ltd.
543, Permarine MR-100 manufactured by Sanyo Kasei Co., Ltd., Aquaprene WS-10 manufactured by Meisei Chemical Co., Ltd., and the like.

The fabric of the present invention includes all forms having a two-dimensional structure and a three-dimensional structure. There is no particular limitation on woven fabrics, knitted fabrics, multiaxial woven fabrics, multiaxial woven fabrics, and the like, and they may have a tubular shape, a bag shape, or a glove shape. In the case of a woven fabric, examples of a loom suitable for use include an air jet loom, a rapier room, and a projectile room.

The dyeing finishing process is not particularly limited. When a lot of cotton fibers are exposed on the surface of the fabric and the surface quality is significantly impaired, it is also suitable to combine gas fried and enzyme reduction, and shirring is performed to shorten long fluff according to the fabric form and application. You can also do it. Since the dyeing is a mixed form of different fibers and the dyeing temperature, hydrogen ion concentration, dye and the like are different, it is preferable to use the two-bath dyeing in consideration of the reproducibility of the color. In the case of two-bath dyeing, it is desirable that the tubular body is sufficiently washed so that the residual dye in the first bath and other dyeing aids do not adversely affect the dyeability of the second bath. Further, it is desirable that the cellulosic fiber is subjected to a fixing treatment in order to suppress the decrease in dyeing fastness.

Furthermore, it is also possible to formulate the resulting cloth fabric with an aqueous sodium hydroxide solution or liquid ammonia to mercerize the cotton fibers (mercerize). By improving the dyeability by mercerizing the cotton fiber, and by imparting an appropriate stretchability, it is possible to absorb the strain (shear stress) due to the friction between the cloth and the object to be wiped during wiping. Effects such as improved durability can be expected.

[0023]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The water retention, water absorption rate, surface existence ratio and fineness, and twist coefficient used in the present invention were measured by the following measuring methods.

Water absorption rate: 1994 version JIS L-1
907 5.1.1 (Drop method). Water absorption rate: Evaluated according to JIS L-1907 5.2 of 1994 version.

Surface existence ratio: After embedding a filament in a resin cell and drying and solidifying it, a section cut sample was prepared with a microtome,
Take a photo with an optical microscope. The ratio of the number of filament single yarns to the number of single fibers located in the outermost layer of the filament is expressed as a percentage. Sample preparation 1) Pre-dry the sample at 105 ° C for 30 minutes. Immediately after drying, perform the following procedure. 2) Bend the insect pin into a U-shape. 3) Take a small amount of sample, hand twist after hand card to make yarn. 4) Tie a thread around the insect pin and tighten it like a bow. 5) Place in a gelatin capsule. Be careful not to let the upper part of the U-shape come out of the container. Resin preparation 1) Liquid A: n-butyl methacrylate, liquid B: methyl methacrylate 1% KO to remove the polymerization initiator
Wash with H. For both liquids A and B, 5 ml of 1% KOH is added to 100 ml of the monomer for washing (shuffle, discard aqueous layer; repeat until coloring disappears), and then similarly wash with water several times (removal of alkali). 2) Put solution B in the beaker at a ratio of 1 to solution 3
Catalyst: Add about 0.1% of 2,4-dichlorobenzoylperoxide and mix with a glass rod (never use metal). Resin embedding 1) Fill the gelatin case with the resin to the fullest extent. 2) Put a gelatin case in a vacuum desiccator, degas under vacuum, and then cover. 3) Curing at 50-60 ° C for 15 hours. 4) After curing, put the gelatin capsules into water,
Swell the capsule and remove the gelatin part. 5) Bend the insect pin of the polymer block with pliers to straighten it and pull out only the pin. 6) Use a razor to scrape the polymer mass into a square pyramid and clean the bottom so that the threads can be seen. 7) Glue the polymer mass to the microtome sample mount with a melted candle. 8) Cut with a microtome to a thickness of 4μ.

Total fineness: According to JIS-1095 9.4.2.

(Example 1) A cotton spinning yarn 40/1 and a polyester semi-dual round cross section 168 decitex 720 filament (B) were used in a Z twisting direction which is the same twisting direction as the cotton spinning yarn using a plying machine. Further, a twisted composite spun yarn was obtained by plying with a twist number of 150 T / M. The weight ratio of the hydrophilic fiber to the composite twisted composite spun yarn was 47%, and the synthetic fiber multifilament was 53%.

The obtained double-twisted composite spun yarn is used for both warp and weft, and after weaving into a double-sided satin design with an air jet loom, it is subjected to scouring / relaxation, disperse dye and reactive dye.
After bath dyeing and repeated reduction washing and hot water washing, finishing dry heat setting was performed to obtain a cloth. The surface existence ratio of the ultrafine fibers (single yarn fineness: 0.23 decitex) by an optical microscope was 65%. The obtained cloth was cut into a cloth shape and sewn. Water absorption rate (%) / water absorption rate (second) is 1.0
No. 2 was found, and no water droplets or water stains remained on the wiped surface, and no dust or short fibers were removed from the surface after wiping, and the wipeability was good.

(Example 2) Blended yarn 45/1 in which the weight ratio of cotton and polyester staple is 35%: 65% and polyester semi-dal round section 168 decitex 720
Using a ply-twisting machine with the filament (B), the same twist direction as the cotton spinning yarn, that is, the Z twist direction, and the number of twists of 150 T /
It was twisted with M to obtain a twisted composite spun yarn. The weight ratio of the hydrophilic fiber to the composite twisted composite spun yarn was 15%, and the synthetic fiber multifilament was 56%.

Using the obtained composite twisted composite spun yarn, a fabric was finished in the same manner as in Example 1. The surface existence ratio of the ultrafine fibers (single yarn fineness: 0.23 decitex) by an optical microscope was 75%. The obtained cloth was cut into a cloth shape and sewn. The water absorption rate (%) / water absorption speed (second) is 0.82, and no dust or short fibers are found on the surface after wiping without leaving behind water drops or water stains on the wiping surface. Was not obtained, and the wiping property was good.

(Example 3) Cotton fine spinning yarn 40/1 and polyester semi-dual circular cross section 168 decitex 720 filament (B) were used in a twisting machine in an S twisting direction which was the opposite direction to the twisting direction of the spun yarn. Further, a twisted composite spun yarn was obtained by plying with a twist number of 150 T / M. The operability at the time of plying is Example 1
Compared with the case of No. 2, there were many yarn breakages, and there were many fly cotton in the site, so it was not a good working environment. The weight ratio of the hydrophilic fiber in the composite twisted composite spun yarn was 47%, and the synthetic fiber multifilament was 53%.

A fabric was finished by using the obtained composite twisted composite spun yarn in the same manner as in Example 1. The surface existence ratio of the ultrafine fibers (single yarn fineness: 0.23 decitex) by an optical microscope was 15%. The obtained cloth was cut into a cloth shape and sewn. The water absorption rate (%) / water absorption rate (second) was 0.86, and although the water absorption on the wiping surface was high, many short fibers were dropped off on the wiping surface and also from the wiping cloth. It was confirmed that the short fibers had fallen off, and it was not finished as a preferable wiper.

Comparative Example 1 A fabric was obtained in the same manner as in Example 1 except that the multifilament (B) in Example 2 was changed to a polyester semi-dal round cross section 168 decitex 48 filament. The surface existence ratio of B fiber (single yarn fineness: 3.5 decitex) by an optical microscope was 70%. The obtained cloth was cut into a cloth shape and sewn. Water absorption rate (%) / water absorption rate (second) is 0.42,
Water droplets remained extremely small on the wiped surface, but the ability to remove oily stains such as sebum was particularly poor as compared with Examples 1 and 2, and was not suitable as a wiper. .

[0034]

EFFECTS OF THE INVENTION According to the present invention, the wiping surface has a water drop trace,
It has become possible to obtain a high-quality wipe cloth that keeps clean without leaving a stain mark.

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) D02G 3/44 D02G 3/44 D03D 1/00 D03D 1/00 Z F term (reference) 4L036 MA05 MA24 MA33 MA35 MA37 MA39 PA21 PA46 RA24 RA25 UA25 4L048 AA21 AA33 AA34 AB17 AB19 CA09 DA14 DA24

Claims (6)

[Claims] 1. A fabric made of a composite twisted and twisted composite spun yarn of a synthetic fiber multifilament having a single yarn fineness of 1 dtex or less and a spun yarn, wherein the water absorption rate (%) / water absorption rate (%) of the fabric. Second) is 0.50 or more, and is a twisted and twisted composite spun yarn fabric excellent in water wipeability. 2. A twisted twisted twisted composite spun yarn is twisted in the same twisting direction as the spun yarn at a twist number of 800 T / M or less, which is excellent in water-wiping property. Combined twisted composite spun yarn fabric. 3. The twisted-twisted composite spun yarn fabric according to claim 1, wherein 50% or more of synthetic fiber multifilaments are present on the surface of the twisted-twisted composite spun yarn. 4. A ply-twist composite spun yarn excellent in water-wipeability according to claim 1, wherein 10-80 wt% of the ply-twist ply composite spun yarn is composed of hydrophilic short fibers. Thread fabric. 5. The composite twisted composite spun yarn fabric according to claim 1, wherein the synthetic fiber multifilament is composed of a filament having a polygonal cross section. 6. The composite twisted composite spun yarn fabric according to claim 1, wherein the synthetic fiber multifilament is a false twisted yarn.