JP3329409B2 - Composite yarn with less wet feeling - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite yarn having little wet feeling even when sweating a large amount, such as sports clothing.

[0002]

2. Description of the Related Art As a conventional spun yarn for obtaining a fabric having a low wet feeling, a combination of a hydrophilic fiber and a hydrophobic fiber is known. Utilizing a two-layer structure, a combination of fibers exhibiting water repellency in the outer layer and fibers exhibiting water absorbency in the inner layer has been proposed. Therefore, it was difficult to coat the water-absorbent fiber with the water-repellent fiber thinly. Therefore, if the mixing ratio of the fibers exhibiting water absorbency is increased to increase the water absorption, the coverage of the fiber bundle exhibiting water repellency is reduced, and there is a problem such as a feeling of wetness, and a satisfactory product is obtained. Not.

[0003] In order to improve such a conventional technique, the applicant has previously filed an application for a spun yarn having less wet feeling (Japanese Patent Laid-Open No. 5-33234). This content is a spun yarn consisting of a fiber bundle A showing water repellency and a fiber bundle B showing water absorption,
The fiber bundle A having a twist angle larger than that of the fiber bundle B has a structure wound around the fiber bundle B, and the weight ratio of the fiber bundle A to the fiber bundle B is 40 to 80/60 to 20. A spun yarn having a low wettability, wherein the coverage of the fiber bundle A on the yarn surface is 40 to 90%.

[0004]

However, even with this technical content, the effect of quickly absorbing sweat when a large amount of sweat is permeated and the part touching the skin feeling less wet is still sufficient. It was not something you could get. Therefore, the present invention further improves such technology, increases the mixing ratio of the water-absorbent staple bundle, and at the same time, increases the coverage of the filament exhibiting water repellency, thereby absorbing sweat more quickly and reducing the feeling of wetting. A composite yarn is provided.

[0005]

The present invention adopts the following means in order to solve such problems. That is, the present invention is a two-layer composite yarn in which a filament showing water repellency is wound around a water-absorbent staple bundle,
The weight ratio of the water-absorbent staple bundle to the entire composite yarn is 65 to 90% by weight, and the water-repellent filament covers the water-absorbent staple bundle at a coverage of 60% or more; When the diameter of the cross section of the composite yarn is d, the filament exhibiting water repellency is d from the center of the composite yarn.
A composite yarn having a small wettability characterized by being present in an outer portion of / 4 or more at 60% or more and having a wettability of a third grade or higher.

Hereinafter, the present invention will be described in detail. It is considered that the feeling of wetting when sweating is caused by the moisture remaining on the skin and the contact between the wet part where the clothes absorbed the sweat and the skin. In order to obtain comfortable clothing with little wetting even if you sweat a lot of sweat, it is important that it is small as long as it has high water absorption and the contact between the sweat absorbing part and the skin does not prevent water absorption. is there.

Here, a filament exhibiting water repellency is wrapped around a fiber bundle exhibiting water absorption to form a composite yarn, so that only the filament exhibiting water repellency from the yarn surface comes into contact with the skin. Give a dry feeling.

In order to quickly absorb sweat and further reduce the feeling of wetting with such a yarn structure, it is necessary to increase the mixing ratio of the water-absorbing fibers but not to decrease the coverage of the water-repellent filaments. To meet this condition,
While the mixing ratio of the water-repellent filament is 35 to 10% by weight, the coverage is 60% or more, preferably 70 to 9%.
0% is suitable. If the coverage is less than 60%, the wetted part that has absorbed the sweat tends to come into contact with the skin, and it is difficult to reduce the wet feeling.

In the composite yarn having such a composition, assuming that the diameter of the cross section of the yarn is d as shown in FIG. 1, 60% or more of the water-repellent filament is present in the outer layer of d / 4 from the center of the yarn. There is a feature. That is, as shown in FIG. 2, the water-absorbent fiber bundle is covered with a thin water-repellent filament. In order to realize this structure, it is desirable to use a method in which the water-repellent filament is not bundled but opened and wound around the water-absorbent fiber bundle. Therefore, it is effective to wind the water-repellent filament around the outer layer. Thus, the mixing ratio of the water-absorbing fibers can be increased, and the coverage of the water-repellent filaments can be increased in order to reduce the wet feeling while having high water absorption.

Next, the water-absorbent staple bundle is composed of an aggregate of water-absorbent staples. The water-absorbent staple is a dropping method according to JIS 1977L-1018 (having an ear at least 50 cm from the opposite end of the knitted fabric). Thing is 10c from ear end
20cm x 20cm at random
5 test pieces, attached to a metal ring having a diameter of 1.5 cm, and a burette filled with distilled water at 27 ± 2 ° C. was dropped every 15 seconds at a rate of 15 to 25 drops per ml. After adjustment, when the water drop starts dropping so that the surface of the test piece is 1 cm from the tip of the burette, move the stopwatch to measure the time (in seconds) when the water drop on the test piece no longer reflects specially. Is measured and expressed as an average value (up to an integer). ) Means that the sample has an average wet time of 5 seconds or less, for example, cotton fiber, descaled wool fiber, polynosic,
Examples include hydrophilic fibers such as viscose rayon, cuprammonium rayon, and hemp, and hydrophobic fibers subjected to water absorption.

[0011] The water-absorbent staple must account for 65 to 90% by weight of the composite yarn. Preferably, it is 65 to 80% by weight. If the water-absorbing staples exceed 90% by weight, the water-absorbing staples are distributed on the surface of the yarn in a large amount, and it is difficult for the water-repellent filament to cover 60% or more of the composite yarn surface, and the sweat is absorbed and wetted. The part easily comes into contact with the skin, and it is difficult to reduce the wet feeling. On the other hand, if the water-absorbing staple content is less than 65% by weight, the amount of water absorption is reduced, and sweat is left on the skin side, and unpleasant feeling remains, which is not preferable. The fineness of the water-absorbing staple is preferably 0.3 to 3d. If it is less than 0.3d, the water absorption is reduced, and if it is more than 3d, the water-absorbing staples are reduced, and the yarn strength is undesirably reduced.

The coated filament exhibiting water repellency has a water repellency of 70 or more as measured by the spray method of JIS1977L-1092. At this time, five test pieces of 20 cm × 20 cm were randomly used as a sample at least 50 cm from the end of the knitted fabric, and at least 10 cm from the end of the ear with ears. In addition,
The wet test piece treated by the above spray method is scored by comparing and comparing it with a judgment standard table, and expressed as an average value (up to an integer place). Examples of the material of the water-repellent filament include synthetic fiber filaments such as polypropylene, polyester, and polyamide. A water repellent treatment may be performed at the filament stage, or a method of forming a knitted fabric using a composite yarn and then applying a water repellent to the filament may be used. It is preferable to use a crimped filament such as a false twisted filament as the filament. Because, due to the bulky effect of the crimped filament on the yarn side, the water-absorbent fiber is less likely to come into contact with the skin while the mixing ratio of the water-repellent fiber is the same as the unprocessed filament,
This is because, as shown in FIG. 3, the contact area between the filament and the skin is also reduced, and a further effect of reducing wet feeling can be expected.
The crimped filament refers to a filament having a bulkiness, and its processing method is not limited to a false twisting method, a knit denit method, a rubbing method, an indentation method, and the like.

The filaments exhibiting water repellency occupy 35 to 10% by weight in the composite yarn. Preferably 35
-20% by weight. The fineness of the single filament of the filament exhibiting water repellency is preferably 3d or less. If it exceeds 3d, the feeling becomes hard and it is not suitable for clothing.

Further, the filament exhibiting water repellency has a two-layer structure wrapped around the water-absorbing staple bundle. In this case, the coverage is 60% or more, preferably 7%.
0 to 90%.

The measuring method of the coverage was as follows.
Five random yarn cross sections of the composite yarn are selected, a 100 times enlarged photograph of the yarn cross section is taken, and the ratio of the circumference of the portion where the filament is located on the outer circumference to the entire circumference is determined. Appeared. In FIG. 1, A is a water-repellent filament,
B represents water-absorbing staples, and shows an example of a coverage of 60%.

Next, an example of the method for producing the composite yarn of the present invention will be described. That is, the raw cotton of the water-absorbent staple was processed into a roving yarn through a mixed cotton process, a carding process, a combing process, a drawing process, and a roving process, and was then supplied to the spinning process and was drafted and spun from the front roller. It is manufactured by winding a multifilament yarn that has been opened through an opening device on the outer periphery of the water-absorbent staple bundle.

[0017]

【Example】

Example 1 Alkali-treated cotton fiber roving (90 gelen / 15yd)
s) is drafted 20.1 times by a ring spinning machine, and when spinning from a front roller, a 75d / 36f polyester multifilament yarn is spread by an electric fiber opening device, and water absorption spun from the front roller. The composite yarn (covering ratio: 71.1%) was manufactured while being wound around a conductive staple bundle and being subjected to actual twisting (twisting coefficient k = 4.0). Using this composite yarn, a knitted knitted fabric (having a basis weight of 170 g / m ² ) was knitted at 26 ″ 22G to perform water repellency. The water repellency treatment was performed using a fluorine-based water repellent LS317 (Meisei Chemical Co., Ltd.). 0.5% ow
f, temperature 50 ° C., time 20 minutes. Next, the wet feeling was determined, and the results are shown in Table 1. The cross-sectional form of the composite yarn is shown in FIG. A is a water-absorbing staple, and B is a water-repellent filament.

[0018]

[Table 1]

The wetness was determined by a sensory test in the range of 200% to 8% (without water addition).
5 points of smooth knitted fabric using 0's cotton thread
Grade [First grade = moisture content 200%, second grade = moisture content 160%, 3
Grade = 80% moisture, 4th grade = 25% moisture, 5th grade = 8% moisture (no wet feeling with no water applied)]. 5g / 70cm ²
Is given, the class is judged twice on the forearms of three subjects, and the average value is obtained.

Example 2 A composite yarn (71.0% coverage) was prepared in the same manner as in Example 1 except that a false twisted yarn of polyester multifilament (75d / 36f) was used as a filament after electrospreading.
The knitted fabric was knitted in the same manner and the wet feeling was determined, and the results are shown in Table 1. FIG. 3 shows a sectional form of the composite yarn. c is a crimped water-repellent filament.

Comparative Example 1 The polyester multifilament yarn of Example 1 was superimposed on the drafted roving yarn without being opened to produce a yarn shown in FIG. 4 (34.8% coverage, 20'S). The other conditions were the same as in Example 1 and the wet feeling was measured and the results are shown in Table 1. The cross-sectional form of the yarn is as shown in FIG.

In Tables 1 and 2, in Examples 1 and 2, the water-repellent filaments covered 71% of the yarn surface, and the water-absorbing staples occupied 71% by weight. In Example 2, the crimped water-repellent filament was used, so that the wet feeling was less. Comparative Example 1 was unsatisfactory because of a low covering rate and a large wet feeling.

[0023]

The composite yarn of the present invention having a small wettability is obtained by thinly covering a water-repellent filament on a water-absorbent staple bundle, and is suitable for fabrics that require quick water absorption and a low wettability. It is effective for clothing worn when sweating a large amount, such as sports clothing.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a composite yarn of the present invention.

FIG. 2 is a cross-sectional view of another example of the composite yarn of the present invention.

FIG. 3 is a cross-sectional view of still another example of the composite yarn of the present invention.

FIG. 4 is a sectional view of a yarn of a comparative example.

[Explanation of symbols]

 A Water-repellent filament B Water-absorbing staple C C Crimped water-repellent filament

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 61-187383 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) D02G 3/36-3/38

Claims (3)

(57) [Claims] 1. A Ri double layer structure composite yarn der the filament wound showing the water repellency around the absorbent staple bundle, the
Ratio of the water-absorbent staple bundle occupied for the whole composite yarn is that 65 to 90% by weight, coated with Fi <br/> Lament indicating the water repellency coverage of 60% or more of the water-absorbent staple bundle When the diameter of the cross section of the composite yarn is d,
The filament showing water repellency is d / 4 from the center of the composite yarn.
60% or more in the outer part of
A composite yarn with a low wettability characterized by being of a class or higher . 2. The composite yarn according to claim 1, having a coverage of 70 to 90%. 3. The composite yarn according to claim 1, wherein the filament is a crimped filament.