JPH101838A - Covered elastic yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject yarn suitable for textile for clothes required to have stretchability, fitness and drapeability such as leg, outer wear, sportswear and inner wear by covering an elastic yarn with a specific core-sheath conjugate fiber. SOLUTION: An elastic yarn is covered with a core-sheath conjugate fiber having a core part containing 3-15wt.% of a white pigment and a sheath part containing <=2wt.% of a white pigment. An elastic textile having soft feeling and good drapeability can be produced by using the covered elastic yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a leg, an outer,
Stretch, fit, sports, inner, etc.
The present invention relates to a coated elastic yarn suitable for clothing requiring a soft texture.

[0002]

2. Description of the Related Art A coated elastic yarn having an elastic fiber as an inner layer is composed of:
Established as a recent trend in the form of 00% use or interwoven with other yarns, such as leg areas such as pantyhose, tights and spats, outer areas such as blouses, suits and pants, shorts, girdle, brassiere, etc. It has been processed into various forms, such as the inner field, sports fields such as jerseys, swimwear and leotards. The sales volume of these products is expanding to complain about stretch, fit, and drape.

[0003] However, when a conventional coated elastic yarn is knitted and knitted, the fabric tends to shrink due to the contraction force of the elastic fiber itself, and the texture tends to be hard, and the drape property is also lost. Reduce the content of elastic yarn,
It was necessary to change the structure and to limit the elastic yarn to a special soft power. From this, when cross-weaving the conventional coated elastic yarn, the amount of the elastic fiber to be cross-woven has to be reduced mainly due to this texture problem, and therefore, the desired stretch-back property is obtained. There was a problem that it could not be done. In addition, since texture hardening occurs also in terms of texture, it can be applied only to a limited use, and cannot be applied particularly to clothes for which texture is important.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a coated elastic yarn suitable for clothing fabrics such as legs, outerwear, sports, and innerwear which require stretchability, fit, and drape.

[0005]

Means for Solving the Problems As a result of intensive studies on the coated elastic yarn, the present inventors have reached the present invention by selecting a specific core-sheath type composite fiber.
That is, an object of the present invention is to provide a white pigment having a content of 3 to 15%.
This is achieved by a coated elastic yarn characterized in that a core-sheath type composite fiber having a core portion of 1% by weight and a sheath portion having a white pigment content of 2% by weight or less is coated with an elastic fiber.

Hereinafter, the present invention will be described in more detail. The present inventors, to achieve a predetermined stretch, fit, drape, soft texture, without reducing the content of elastic fibers, in order to limit the tissue and elastic fibers used, elastic fibers From the viewpoint that the selection of the yarn covering the yarn is important, it was found that by specifying this yarn, a fabric having a soft texture can be manufactured.

[0007] The coated elastic yarn of the present invention has an elastic fiber covered with a special core-sheath composite fiber. The core-sheath type conjugate fiber differs in the content of the white pigment between the core portion and the sheath portion. The content of the white pigment is 3 to 15% by weight, and the content of the white pigment is 2% by weight. It has the following sheath. Since such special core-sheath type composite fibers contain more white pigment in the core part, the bending hardness of the fibers is softer than ordinary bright fibers or semi-dal or full-dull fibers,
Even when the coated elastic yarn is used, the characteristics of the core-sheath type conjugate fiber remain as it is, and an elastic fabric having a soft feeling and drape property can be obtained.

[0008] In particular, when a knitted fabric such as tights using 100% of the coated elastic yarn of the present invention is produced, there is no glaring feeling peculiar to the synthetic fiber usually using bright fiber, and on the contrary, the opaqueness of full-dal fiber is also felt. A matte feeling is obtained. Even if a fiber containing several percent by weight or more of white pigment is used, a soft texture and excellent drapability can be produced, but in this case, the reeds and guides are worn out in the weaving process to remove fluff and streaks. Can cause drawbacks. Further, the coloring property is poor, and the sharpness unlike the core-sheath type composite fiber cannot be obtained. Therefore, when a large amount of white pigment is added, covering with a sheath portion having a small content of white pigment is more excellent in process passability and color development.

Further, an elastic fabric using the coated elastic yarn is
In addition to the effect of texture, discoloration due to water such as rain and sweat can be prevented. The core of the sheath-core conjugate fiber in the coated elastic yarn of the present invention needs to have a white pigment content of 3 to 15% by weight. A weight of 5 to 10 is desirable in view of the strength and elongation of the fiber. If the amount is less than 3% by weight, the feeling of the obtained elastic cloth becomes hard, and the effect of the present invention cannot be obtained. On the other hand, if it exceeds 15%, the strength and elongation become extremely poor.

Further, the content of the white pigment in the sheath must be 2% by weight or less, preferably 0 to 2% by weight, and more preferably 0 to 0.5% by weight.
If the content of the white pigment is more than 2% by weight, clear coloring properties cannot be obtained when dyeing the elastic fabric. Polyester, polyamide (nylon 6, nylon 66, etc.), or polyacrylonitrile-based synthetic fiber multifilament is preferably used as the core-sheath type composite fiber used for the coated elastic yarn of the present invention.

In the core and the sheath, the base polymer constituting the fiber does not need to be the same. For example, in the case of a polyester core-sheath composite fiber, only the sheath portion may be a cationic dyeable polymer. In the case of a core-sheath composite fiber of polyamide, the core may be nylon 66 and the sheath may be nylon 6. Further, the core component and the sheath component may be combined concentrically or eccentrically. Also,
The core-sheath weight ratio is preferably in the range of 1/3 to 3/1, and particularly preferably 1/2 to 2/1. If it is less than 1/3, the effect of preventing discoloration becomes small, and if it exceeds 3/1, it may be difficult to cover the core component with the sheath component during spinning.

The white pigment to be added to the core-sheath type conjugate fiber must have no problem in color development even when dyed, and should not hinder the production of the original yarn. For example, metal oxides such as titanium oxide, zinc oxide, magnesium oxide, and calcium carbonate are desirable. Considering the cost, titanium oxide is most suitable. The core-sheath type composite fiber of the present invention may be used after being processed not only into raw yarn but also into false twisted yarn, twisted yarn, air-mixed yarn and the like. Denier can be selected appropriately,
Since it is used for clothing, it is preferably about 10 to 200 denier.

The elastic fiber used in the present invention may be a known ester-based or ether-based polyurethane elastic fiber or a polyetherester-based elastic fiber. Denier may be appropriately selected as desired, but usually 10 to 10
It is about 50 denier. Examples of the thread shape of the coated elastic yarn of the present invention include a covering yarn such as single covering and double covering, a coated elastic yarn compounded during fluid jetting, and a core spun yarn (CSY) compounded during spinning. The coating conditions may be selected within a known range, and there is no particular limitation.
0 to 2000 T / m, preferably 400 to 1800 T / m
The draft of the elastic yarn is about 2.0 to 3.5, preferably about 2.5 to 3.0.

The production of an elastic fabric using the coated elastic yarn of the present invention can be performed by any method. Knitting and weaving using 100% of the coated elastic yarn, or cross-knitting and mixing of the coated elastic yarn and other fibers other than the coated elastic yarn are exemplified. This mixing method is optional, and for example, there is a method of alternately positioning other fibers on the surface or staggering the fibers on the surface.

More specifically, in the case of a knitted article, in the case of circular knitting, not only the coated elastic yarn is used 100%, but also the coated elastic yarn is mixed at a certain interval such as every other course or every two courses, Alignment by plating (a method of aligning the coated elastic yarn and the core-sheath composite fiber and knitting them simultaneously) and the like. The same applies to the case of sock knitting (tenjiku, fawn). In the case of warp knitting, there are methods such as inserting the covering elastic yarn, placing the covering elastic yarn on the back reed, and arranging another fiber on the front reed, and changing the reed to be used. As for the organization, in circular knitting, it is made of India, milling, smooth,
In warp knitting such as seamless, there are half, back half, power net, satin, tulle, and the like. On the other hand, in the case of a woven fabric, there is a method in which the coated elastic yarn is mixed at a certain interval such as alternating warps, alternating wefts, and alternating wefts, such as using 100% of the coated elastic yarn. As an organization,
There are twill, satin weave, etc., and a weave structure of two or more layers may be used. They are independent of the gauge and texture of the knitting machine and, in the case of woven fabrics, of any density and texture, provide the desired texture and drape.

The coated elastic yarn of the present invention contains 10
% Or more, and the effect of the present invention is remarkably exhibited when a fabric is constituted by only the coated elastic yarn or a mixture of the coated elastic yarn and the core-sheath composite fiber. is there. Any fibers other than the coated elastic fibers in these elastic fabrics can be used. For example, regenerated fibers such as artificial cellulose fibers, polyester, polyamide, polypropylene, synthetic fibers such as acrylic,
Natural fibers such as cotton, wool, hemp, and silk. In any case, a fabric having a better texture can be produced than in the case of using an elastic yarn coated with a fiber other than the core-sheath type composite fiber. In addition, the artificial cellulose fiber mentioned here refers to what is basically made of β-glucose, such as artificially produced regenerated cellulose, semi-synthetic cellulose, and purified cellulose fiber. The hydroxyl group of the cellulose molecule may be substituted with another substituent. For example, acetylation and the like. Specific examples of these cellulose fibers include cupra, acetate, rayon, polynosic, and the like.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.
In Examples 1 to 8 and Comparative Examples 1 to 6, the evaluation of the manufactured elastic fabrics was performed as follows. Texture The softness was evaluated by ハ ン ド, the hard one was evaluated as ×, and the middle and soft one was evaluated as ○. Drape The drape coefficient of the elastic fabric was determined by JIS-L-1096 stiffness test method. Color development To confirm the color development of the coated elastic yarn using the core-sheath composite fiber, the core-sheath composite fiber covering the elastic yarn was changed to 75d / 36f polyester with a titanium oxide content of 3% by weight under the same conditions. A coated elastic yarn and an elastic cloth were produced, and the coloring property (dullness of color) at that time was visually judged, and those having a titanium oxide content superior to the coloring property of a cloth having a content of 3% by weight were evaluated as ◎ and inferior. Is indicated by x, and the equivalent level is indicated by ○. The bursting strength JIS-L-1096 Burst Strength Test (Mullen form method), what burst strength of more than 3 Kg / cm ² and ◎, 2-3 kg / cm ² to ○, 2Kg / cm
Those smaller than ² were evaluated as x.

[0018]

Example 1 Polyester core-sheath type conjugate fiber having a core / sheath weight ratio of 1/1 comprising a core portion containing 75% by weight of titanium oxide and a sheath portion containing 0.05% by weight of titanium oxide at 75d / 36f. A coated elastic yarn composed of the false twisted yarn and the spandex fiber 40d was produced with a covering number of 600 T / m and a draft of 2.5 times. This was knitted using a 28-gauge single circular knitting machine with a dendrite and titanium oxide content of the same core-sheath type composite fiber and the above-mentioned coated elastic yarn as the plating. The finished greige is dyed at a high temperature and high pressure of 130 ° C. and then finished to give a basis weight of 250 g / m ^2.
Knitted fabric was manufactured.

When this knitted fabric was sewn on a T-shirt and worn, it became a very comfortable garment that had a soft texture, drape, and fit the body. Table 1 shows the results
It was shown to.

[0020]

Examples 2 to 7 and Comparative Examples 1 to 4 In Example 1, fibers were prepared by changing the content of titanium oxide in the core-sheath type conjugate fiber covering the elastic fibers. evaluated. The results are shown in Table 1.

[0021]

Example 8 In Example 1, fibers mixed with the coated elastic yarn of the present invention were mixed at 75d / 36f from a core containing 8% by weight of titanium oxide and a sheath containing 0.05% by weight of titanium oxide. A knitted fabric was prepared by changing a polyester-sheath composite yarn having a core-sheath weight ratio of 1/1 into a polyester bright yarn having a titanium oxide content of 75% by weight and a titanium oxide content of 0% by weight, as in Example 1. Was evaluated. The results are shown in Table 1.

[0022]

Comparative Example 5 In Example 1, a knitted fabric was prepared in which the fiber covering the elastic fiber was changed to a polyester 75% / 36f polyester full-dull yarn having a titanium oxide content of 3% by weight. Evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

[0023]

Comparative Example 6 In Example 1, a knitted fabric was prepared in which the fibers covering the elastic fibers were changed to polyester bright yarn of 75 d / 36 f of polyester and containing 0% by weight of titanium oxide. Evaluation was performed in the same manner as in Example 1. The results are shown in Table 1. From these experiments, it was found that the elastic fabric obtained by cross-knitting the coated elastic yarn of the present invention had a soft feel, had excellent drapability, and had no problem in color development and strength.

Next, in Examples 9 to 14 and Comparative Examples 7 to 10, the produced knitted fabrics were evaluated as follows. Texture The softness was evaluated by ハ ン ド, the hard one was evaluated as ×, and the middle and soft one was evaluated as ○. Glittering The knitted fabric was attached to the foot of the mannequin, and the feeling of glare was visually evaluated under sunny sunlight. Color development To confirm the color development of the coated elastic yarn using the core-sheath type composite fiber, the core-sheath type composite fiber covering the elastic yarn was treated with 30d / 10f nylon 66 having a titanium oxide content of 3% by weight. Threads and knitted fabrics were manufactured under the same conditions, and the dullness of the color at that time was visually judged. If the titanium oxide content was 3% by weight and the color developing property was superior, ◎ 、: Inferior was rated as ×. Burst strength According to JIS-L-1096 burst strength test (Murren's method), those with a burst strength exceeding 1 kg / cm ² were rated as ◎, and 0.8 kg / cm ² were rated as ○ and 0.8.
Those smaller than Kg / cm ^{2 were} evaluated as x. Wearing Feet A one-footed knitted tights fabric was put on a woman of standard body type, and the feeling of wearing was sensory evaluated. As a method of the evaluation, a 30d / 10f false twisted yarn of nylon 66 containing 3% by weight of titanium oxide and a spandex fiber 20d
A covering elastic yarn consisting of 1600 T / m and a draft of 2.8 times is made from the above, and a trouser tights knitting machine is made with a pantyhose knitting machine having 400 needles. ×, those of the same level were rated as ○.

[0025]

Example 9 Nylon 66 core / sheath type composite fiber having a core / sheath weight ratio of 1/1 comprising a core portion containing 30% by weight of titanium oxide and 8% by weight of titanium oxide and a sheath portion containing 0.05% by weight of titanium oxide. Was made with a covering number of 1600 T / m and a draft of 2.8 times, and one leg of Zocchi tights was made with a pantyhose knitting machine having 400 needles. After the boil-relaxation, normal dyeing and heat setting were performed to make tights for one foot. Wearing this knitted fabric, the texture is soft and fits the body, resulting in extremely comfortable tights. The results are shown in Table 2.

[0026]

Examples 10 to 14 and Comparative Examples 7 to 10 Fibers were prepared in the same manner as in Example 9 except that the content of titanium oxide in the core-in-sheath type composite fibers was changed. The results are shown in Table 2.

[0027]

Comparative Example 11 A fiber was prepared in the same manner as in Example 9 except that the core-in-sheath composite fiber was changed to 30d / 10f nylon 66 having a titanium oxide content of 3% by weight. The results are shown in Table 2.

[0028]

Comparative Example 12 A fiber was prepared in the same manner as in Example 9 except that the core-in-sheath composite fiber was replaced with 30 d / 10f nylon 66 having a titanium oxide content of 0% by weight. The results are shown in Table 2. From these experiments, it was found that the tights using the coated elastic yarn of the present invention had a soft texture, excellent wearing comfort, and had no problem in coloring and strength.

[0029]

[Table 1]

[0030]

[Table 2]

[0031]

EFFECT OF THE INVENTION The coated elastic yarn of the present invention has an extremely soft texture of an elastic fabric and is most suitable for apparel. In particular, even when polyester fibers are used, the coated polyester yarn has a high polyester mixing ratio. With a soft texture, it is possible to manufacture clothes with excellent drape properties.

Claims (1)

[Claims] An elastic fiber is coated with a core-sheath conjugate fiber having a core having a white pigment content of 3 to 15% by weight and a sheath having a white pigment content of 2% by weight or less. A coated elastic yarn characterized by the above-mentioned.