WO1999029947A1

WO1999029947A1 - Fiber product made of covered elastic thread and covered elastic threads

Info

Publication number: WO1999029947A1
Application number: PCT/JP1997/004462
Authority: WO
Inventors: Sigeru Mizutani; Yoshiaki Ueshima
Original assignee: Sukaraa Haitatti Co., Ltd.
Priority date: 1997-12-05
Filing date: 1997-12-05
Publication date: 1999-06-17

Abstract

A fiber product, such as, especially, stockings or underclothing, made of low elongation covered elastic thread whose maximum elongation in the elastic range is 20 % - 100 %. Such a fiber product has very excellent characteristics such as good touch, wearing feeling given by suppressing sultriness and stuffy feeling in summer, improved durability, easiness of wearing/unwearing, uniform appearance and no cramping. After the elastic thread which is extended 1.3 - 2.8 times is covered with covering threads, the covered elastic thread is continuously subjected to a heat treatment at 170 °C - 200 °C for the heat fixing at a string speed ratio of 70 - 110 % to the thread speed when the covering is finished. As the covering threads of the threads for stockings, nylon threads are preferable.

Description

Textile products using coated elastic yarn and coated elastic yarn

X-Technical Field

The present invention relates to a fiber product constituted by using a low-elongation coated elastic yarn having a maximum elongation of 20 to 100% in an elastic region, specifically, a stocking product, and an undergarment.

The present invention relates to knitted and woven products including articles. Furthermore, the present invention relates to a low-elongation degradable yarn having a maximum elongation of 20 to 100% in an elastic region, a method for producing the same, and a force-balancing device for producing a low-elongation coated elastic yarn. Background art

Coated elastic yarns have excellent dyeing properties and large stretching power, so they are widely used mainly in textiles that require close adhesion and tightening force, such as stockings and underwear. Conventionally, coated elastic yarns in the above-mentioned applications are attractive in that they have high elasticity and high tightening force, and those having a maximum elongation of 200% or more in an elastic region are used. He had tightly tightened the body lines on his legs and waist. This conventional coated elastic yarn has been manufactured by covering an inelastic yarn such as a Ny knit yarn on an elastic filament such as an inflated polyurethane stretched about three to four times. Textile products using coated elastic yarns manufactured in this way have strong tightening force and good adhesion and feel good, but on the other hand, lack freshness, especially for stocking products, etc. in summer. It was pointed out that it would cause difficult heat and stuffiness, and it had drawbacks such as difficulty in attaching and detaching, poor durability, and easy pulling. In order to eliminate these drawbacks, adjust the usage ratio of coated elastic yarn.

Replacement form (Rule 26) Attempts to change the knitting or weaving structure have been made but have not reached a satisfactory level.

On the other hand, in addition to coated elastic yarn, nylon yarn is also used as a material for stocking products. This type of stocking product has a gentler tightening force and less heat and stuffiness than the above-mentioned stock product using the coated elastic yarn, so it does not require a special strong tightening force. However, there are problems such as inferior fashionability, low strength, poor touch, and easy slipping. Therefore, an object of the present invention is to provide a textile product that is comfortable to wear, reduces heat and stuffiness and produces a refreshing feeling of wear, is durable, easy to attach and detach, and has a rich fuzzy property. An object of the present invention is to provide a stocking product, an undergarment product, a coated elastic yarn of an important material thereof, and a method for producing the coated elastic yarn. Disclosure of the invention

The present inventor manufactured coated elastic yarns having different characteristics from the conventional ones, and further produced fiber products such as knitted and woven fabrics using the obtained various types of coated elastic yarns, and studied the quality and characteristics in detail. . In addition, textile products using low-elongation coated elastic yarn with a maximum elongation of 20 to 100% in the elastic region, clothing such as stocking products and underwear products, especially pantyhose and tights Stocking products, including spatter, have completely unexpected and unexpected features, i.e., solve the above-mentioned drawbacks and problems of fiber products using conventional coated elastic yarns or Nylon temporary twisted yarns. It has been found to have very good quality. Furthermore, the present inventors have studied the industrial production method and production apparatus for the low elongation coated elastic yarn having the above characteristics, and completed the present invention.

2 Replacement form (Rule 26) I came to.

Hereinafter, the present invention will be specifically described with reference to the drawings. The present invention provides a low-elongation coated elastic yarn having a maximum elongation of 20 to 100% in an elastic region. there is provided a textile product characterized in that it is, clothing ing from knitted or woven, among others knitted, _c low elongation covered elastic yarn is suitable particularly stocking product, the undergarment product with other fibers For example, the number of threads of non-elastic yarn such as nylon filament is 0 to 1 for the number of lined yarns of low elongation coated elastic yarns. The alternating knitted stocking products have a good feeling of wearing and have excellent quality.

The elastic yarn for low elongation coating used in the above-mentioned textile products is not particularly limited except for the elongation, but after the nylon yarn is used as the coating yarn and the elastic yarn is force-barried, it is continuously 17 A low-elongation coated elastic yarn that is heat-set by performing a heat treatment at 0 ° C. to 200 ° C. is preferable.

In addition, the above-mentioned low elongation coated elastic yarn covers the elastic yarn in a state where the total elongation ratio is expanded to 1.3 to 2.8 times, preferably 1.4 to 2.6 times. It can be manufactured by continuously heating at 170 ° C to 200 ° C at a running speed of 70% to 110% at the end of the covering, and heat-setting. . Preferably, the heat treatment is performed so that the running speed of the coated elastic yarn is in the range of 75% to 105% at the end of force baling. Alternatively, the low elongation coated elastic yarn is obtained by covering a non-elastic yarn with an elastic yarn having a total elongation ratio of 1.2 to 2.2 times, preferably 1.3 to 2.1 times. It can also be manufactured. At that time, in order to stabilize the covering conditions, the pre-elongation ratio of the elastic yarn was set to a ratio larger than or equal to the total elongation ratio, and after the elastic yarn was once taken out of the package, the elasticity was continuously taken out. Adjust the yarn to the required total elongation ratio and

3 Replacement form (Rule 26) Is recommended.

For the production of the low elongation coated elastic yarn, a general force-balancing device can be used.However, the heating means of the coated elastic yarn is 11 times stronger and the running speed of the elastic yarn 6 in the covering zone 7 is reduced. After the total elongation imparting roll 5 to be regulated, a heat fixing speed control means 12 for regulating the traveling speed of the coated elastic yarn passing through the heating means is provided between the heating means and the coated elastic yarn winding device 10. It is highly desirable to use a force balling device that specializes in Also, since the subtle differences in the yarn path affect the quality and the uniformity of the quality, the length of the yarn path of the pre-stretching application roller 3 and the force-balling yarn spindle 8 is longer or shorter (s and s in FIG. 2). When using a covering device with a '), an extension giving auxiliary yarn feeding device 14 is provided between the leading extension giving π-roll 3 of the long weight of the yarn path and the covering yarn spindle 8. The length (s') of the yarn path between the extension giving auxiliary yarn feeding device 14 and the force-balancing yarn spindle 8 should be equal to the length (s) of the spindle having the short yarn path. Is preferred.

The coated elastic yarn of the present invention is formed by winding an elastic yarn such as polyurethane around a core yarn and a non-elastic yarn such as nylon or polyester into a covering yarn as a covering yarn.

In the present invention, the mechanical properties of the coated elastic yarn were determined by heating the target coated elastic yarn in boiling water with no load for 15 minutes, and then air-drying with no load as a sample, using a tensile tester. This is the value obtained from the S-S curve measured. Fig. 1 shows the obtained typical S-S curves. It has good reproducibility and is close to the value in the state of use in consideration of dyeing processing conditions, etc., and is widely used to show the mechanical properties of the coated elastic yarn.

In the present invention, the total elongation ratio is the elongation ratio applied to the total elongation applying roll 5 based on the elastic yarn wound around the package 1, that is, a force burr that winds the covering yarn around the core yarn. Means the extension ratio at the time of

4 Replacement form (Rule 26) In the production of covered elastic yarn, it was carried out three to four times. The pre-elongation magnification is the elongation magnification applied to the pre-elongation application port 3 based on the elastic yarn wound on the package 1, that is, the elongation magnification applied by unraveling. And included in the total elongation ratio. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows an example of the SS curve measurement of the coated elastic yarn. In the figure, A is the SS curve of the low-elongation coated elastic yarn, and B is the SS curve of the conventional coated elastic yarn. a is the low elongation covered elastic yarn, b is the boundary value between the elastic region and the inelastic region of the conventional coated elastic yarn, and is the maximum elongation in the elastic region. FIG. 2 is an explanatory view showing a processing system of a multi-mass single covering device provided with a heating means 11, and FIG. 3 is a processing system of one weight in a double force barring device provided with a heating means 26. FIG. 4 is an explanatory diagram of a processing system of a conventional multi-spindle single force balancing device, and FIG. 5 is an explanatory diagram showing a processing system of one spindle in a conventional double covering device. . BEST MODE FOR CARRYING OUT THE INVENTION

In the present invention, textile products manufactured using the above-described low elongation coated elastic yarn, such as stocking products and underwear products, are compared with conventional stocking products manufactured using coated elastic yarn having excellent stretchability. The fact that the tightening force was low was expected to some extent, but instead it reduced the heat and stuffiness of the wearer, giving the wearer a fresh feeling of wear, improving durability, and causing pulling. The present invention has been completed because of the surprising effect of holding down, easily attaching and detaching, and keeping the appearance uniform. Hereinafter, the present invention will be specifically described with reference to embodiments.

The low elongation coated elastic yarn used in the present invention is a replacement paper such as polyurethane, which is the core yarn. (Rule 26) Inelastic yarn such as nylon is wound around the elastic yarn as a coating yarn. In the textile product of the present invention, in order to bring out the effect of the present invention, it is generally preferable to use a low-elongation coated elastic yarn having a maximum elongation of 20 to 100% in an elastic region. The values are not exact, and the preferred maximum elongation may be slightly higher or lower depending on the type of textile. In addition, as in the case of the conventional use of coated elastic fibers, the low-elongation coated elastic yarn can be used for the main part of the purpose of using the textile product to achieve the effect. You may interweave. There is no special restriction on the usage ratio, and it may be increased or decreased as appropriate. Generally, it is desirable to mix and interweave at least 30% by weight in the main part. For example, in the leg part of a stocking product, the number of non-elastic yarns such as nylon filaments is alternately knitted at a ratio of 0 to 1 with respect to the number of yarn supply yarns of low elongation-covered cohesive yarn, and other knitting is performed. By appropriately using other yarns of the low elongation coated elastic yarn at the portion, a product having good wearing feeling and excellent quality can be manufactured.

The textile product of the present invention is not limited to textiles and knits, but is suitable for clothing and knitwear, especially for products that come into contact with the skin, such as stocking products, underwear products, and girdle products, and products that require an appropriate tightening force. is there. Above all, it is effective for eliminating the stuffiness and heat of summer products and the problem of putting on and taking off, and improving freshness, fashionability and durability.

The reason why the fiber product of the present invention exhibits the above-described characteristics will be described. Conventional coated elastic yarns have a large tightening force and when used in stocking products, etc., have a high adhesion to the skin, so they will bite into the skin, increasing the contact area, and separating the knitted fabric from the close contact with the skin However, the movement is extremely restricted, and there is no replacement of the air layer. Therefore, especially in the summer, the tightly contacted part becomes sweaty, causing the wearer to feel hot and stuffy. In the stocking products and the like of the present invention, the tightening force is small and the adhesion to the skin is soft.

6 one

Replacement form (Rule 26) However, it is considered that the wearer's movement tends to cause the close-contact part to separate and move, promote the replacement of the air layer, and reduce the feeling of heat and stuffiness, resulting in a refreshing feeling.

Improvement of durability and fashionability is also one of the important effects of the textile product of the present invention. Conventional stretchy coated elastic yarns have a large decrease in coverage due to non-uniformity of the coating yarn when the core yarn is stretched, and have a large tension load during use. The core yarn is easy to cut. Furthermore, the relative displacement and deformation between the core yarn and the coating yarn, which occur each time the yarn is repeatedly expanded and contracted, is large, and hysteresis is added, so that the coating yarn gradually rises from the core yarn and becomes very easy to fray. And fashionability are impaired. Is the maximum elongation in the elastic range from 20% to 100? In the low elongation coated elastic yarn, the maximum elongation is doubled, the coating yarn is uniform, and the coverage of the core yarn does not decrease so much during elongation. Also, clothing is soft and easy to put on and take off, so you don't have to do too much, preventing damage when putting on and taking off. Furthermore, since the expansion and contraction range is appropriate, the uniformity of stitches and weaves is maintained in appearance, and the appearance is less disturbed and the effect on the fashion cannot be ignored. As the elastic yarn for low elongation coating, there is no particular limitation other than elongation. <Nylon yarn is used for the coating yarn for stocking products, etc. It is.

Next, a method for producing a low-elongation coated elastic yarn used in the present invention will be described. Although there is no particular limitation on the method for producing the low elongation coated elastic yarn, two preferred examples of the production method will be described. First, the covering yarn is covered with the total elongation ratio of the elastic yarn within the range of 1.1 to 2.8, and the processing speed of the covering elastic yarn is reduced to 70 at the end of the covering. % To 110%, preferably 75% to 105%, to produce a coated elastic yarn having a maximum elongation in the elastic range of 20% to 100% by heat treatment. Can be.

7

Replacement forms (Rule 26) Although the coated elastic yarn becomes loose or taut during the heat treatment, there is no concern that any trouble will occur because it is an elastic yarn. The total elongation ratio at the time of covering depends on the required elasticity and the kind of elastic fiber to be used, but it is usually 1.3 to 2.8 times, and particularly preferably 1.4 to 2.6 times. It is economical. The coated elastic yarn used in the present invention produced in this manner is characterized in that the coating yarn is heat-fixed in a spiral wrap state in close contact with the elastic yarn, and the uniformity of coating is large and stable.

In the second manufacturing method, while the conventional coated elastic yarn is manufactured by making the total elongation ratio of the core yarn 3 to 4 or more and force-barring with the coating yarn, the total elongation of the core yarn is 0. Under low elongation conditions that do not exceed 2.2 times the magnification is usually 1.2 times to 2.2 times, preferably 1.3 times to 2.1 times. By performing covering while keeping the total elongation ratio at 2.2 times or less, the effect of suppressing the shrinkage of the core yarn by the coating yarn and, in some cases, the expansion of the elastic area due to the heat shrinkage of the coating yarn by dyeing or the like. In addition to the suppression effect, 5 coated elastic yarn used in the present invention can be obtained. For example, when a coated elastic yarn having a maximum elongation in the elastic region of 50% is intended, the target coated elastic yarn can be obtained by performing covering with a total elongation ratio of 1.6 times. It has the feature that it can be manufactured using a conventional covering device without heat treatment means as it is.

However, for example, when producing a coated elastic yarn having a maximum elongation of 50% in the elastic region, the second method involves covering with a total elongation ratio of about 1.6 times. According to the method described above, the total elongation ratio can be reduced to about 2 times to perform force-balancing and heat-setting to reduce shrinkage, so that a coated elastic yarn having a small ratio of the core yarn to the coating yarn can be obtained. . Since the use ratio of expensive elastic yarn is smaller than that of the covering yarn, or the elastic yarn is more expensive as the fineness becomes finer, the first production method has a large economic effect.

By the way, under the condition that the stretching ratio is small and the tension of the elastic yarn is low, the package 1

-8

Replacement form (Rule 26) If the elastic yarn is pulled out from the thread and covered, it will not be able to cope with the fluctuation in tension when the covering yarn is wound, and will be dragged by the fluctuation of the elastic yarn and the winding action of the covering yarn. A non-uniform shape of the elastic yarn, which is considered to be caused by the torsion and the effect of restoring the torsion, occurs, and uneven winding of the covering yarn is likely to occur. In addition, the yarn tension from the package 1 becomes unstable due to the small tension, and there is a problem of fluctuation of elastic yarn elongation and yarn breakage due to the pick-up (reverse winding phenomenon) at the unraveling portion. It has been found that these problems can be solved by controlling the pre-elongation ratio to be equal to or higher than the total elongation ratio, increasing the take-up speed from the package, and stabilizing by applying a certain level of tension or more. . If the pre-elongation ratio is larger than the total elongation ratio, the polyurethane elastic yarn will be relaxed before and after the pre-elongation imparting roll 3, but since it is an elastic yarn, it will not be loosened or slack, and will operate without trouble. In addition, a combination of the first and second methods for producing a low elongation coated elastic fiber, wherein a heat treatment is applied to the coated elastic yarn obtained by force-barring the core yarn having a low elongation and heat fixing is performed. Alternatively, it can be implemented by adding the above-mentioned package release technology.

Further, a production apparatus (force balling apparatus) for a low elongation coated elastic yarn that can be preferably used will be specifically described with reference to the drawings.

First, a conventional force-balancing device will be briefly described with reference to FIGS. The drum-type package 31 of elastic yarn is rotated at a specified rotation speed. The package 31 is placed on two rolls 3 2, and the pre-elongation imparting roll 33 is used. The elastic yarn 34 is taken up by applying a tension, and the elastic yarn 36 is subjected to elongation addition at the total elongation ratio between the pre-elongation imparting roll 33 and the total elongation imparting roll 35 to provide a force-balancing zone 3. 7, the coating yarn is taken from the coating yarn spindle 38, and the elastic yarn 36 is force-validated. The force-barred coated elastic yarn 39 is a replacement sheet (Rule 26) It is wound around the coated elastic yarn winding package 40. In the double force barring device shown in FIG. 5, the elastic yarn 43 subjected to the elongation addition at the total elongation ratio between the first elongation imparting roll 41 and the total elongation imparting roll 42 is applied to the first force balancing zone. To the second covering zone 45 to perform double covering, and take up the coated elastic yarn winding package 46.

Next, a force balling device provided with a heating means suitable for carrying out the present invention will be described with reference to FIG. 2 and FIG. First, in the single covering device shown in FIG. 2, the package 1 is rotated on the roll 2 and the elastic yarn 34 is taken up by the pre-elongation imparting roll 3, and the total elongation imparting roll 5 Then, the elastic yarn 6 is extended and added, passes through the force-balancing zone 7, and the coating yarn is pulled off from the force-balancing yarn spindle 8 to cover the elastic yarn 6.

The coated elastic yarn 9 that has completed the force balling is heated continuously by passing through the heating means 11 and thermally fixed. There is no particular limitation on the heating means, and a heating plate, a heating cylinder, a heating drum, or the like that can provide a heating temperature of 90 to 200 ° C. can be used. In addition, in order to carry out the heat setting in a required relaxed or tensioned state, a heat fixing unit speed control roll 12 is provided following the heating means 11, and before and after the total elongation imparting roll 5 and the heat fixing unit speed control roll. It is desirable that the running speed of the elastic yarn after the coating can be independently controlled. When a heating plate is used as the heating means 11, the traveling speed of the coated elastic yarn 9 on the plate is set according to the required characteristics of the coated yarn, fineness, etc. Or 5 Om / min. Although the length of the heating plate depends on the method, the heating time of a heating plate having a length of about 10 cm is 0.6 seconds to 0.12 seconds, which is almost a sufficient level. Preferably, a heating plate having a length of about 20 cm is used. The heat-treated coated elastic yarn passes through the winding guide 13 and is wound into the coated elastic yarn winding package 10.

0

Replacement forms (Rule 26) Instead of the additional installation of the heat fixing section speed control rolls 12, the running speed of the coated elastic yarn during the heat fixing can be controlled by controlling the winding speed of the winding package 10. In this case, it is desirable to select a winding condition in which the change between the heat setting tension and the winding tension is small.

Further, in the conventional multi-weight covering device, in order to make the device compact, the weights are brought close to each other, and the position of the force-balancing yarn spindle 38 of each weight is determined as shown in FIG. As a result, the yarn path between the preceding elongation imparting roll 33 and the force-balancing yarn spindle 38 became longer or shorter. When the total elongation rate of the force-balancing zone was set to three times or more, there was no noticeable problem with any of the weights. However, as the magnification is reduced to 3 times or less, the weight of the yarn with a long yarn path is liable to cause fluctuations in the elastic yarn's elongation and rotation, which are considered to be caused by fluctuations in the tension of the coating yarn. It turned out that manufacturing became difficult, and that variations in quality due to differences in yarn path length could not be ignored. As a result of the study, as shown in Fig. 2, an auxiliary yarn supplying device 14 for applying the pre-elongation was provided, and the covering yarn spin spindle was provided from the advance elongation applying roll 3 or the auxiliary yarn supplying device 14 of each weight. It has been found that the problem can be solved by setting the yarn path length of the elastic yarns up to 8 to be almost the same and short. As the auxiliary yarn feeding device 14, a roll, a rotating blade tensor, or the like can be used. It is presumed that the shorter the yarn path length is, the smaller the vibration width of the elastic yarn is, and the elastic yarn side is relatively sensitive to the fluctuation of the tension of the coating yarn, and has the effect of suppressing the fluctuation. . Specifically, the yarn path length from the elastic yarn release point of the preceding elongation imparting roll 3 to the covering yarn spindle 8 is desirably 10 cm or less, and the shorter it is, the better.

The double force balancing device shown in FIG. 3 does not have an auxiliary yarn feeding device, but has a heating means 26 and has two covering zones 23 and 24. Others conform to the single force balling device shown in Fig. 2. 2 1 is elastic yarn package,

1 1

Replacement form (Rule 26) Reference numeral 22 denotes a pre-elongation application roll, reference numeral 25 denotes a total elongation application roll, reference numeral 27 denotes a heat fixing unit speed control roll, and reference numeral 28 denotes a coated elastic yarn winding package.

Next, the coated elastic yarn used in the present invention was manufactured and added to pantyhose, and a wearing test was conducted. The results will be specifically described. The results of the evaluation of stocking in the examples and comparative examples were as follows.Eight try-on persons wore a total of seven days, and the wearer compared the results with the conventional pantyhose. This is the result of the stage determination.

◎; Excellent ；; Good △; Slightly better than conventional-; Normal Average The average number of days of wear, including the days of breakage, is the average of the total number of days of wear, including those that are worn for 7 days and undamaged 8 days. It has been calculated.

Examples 1-3, Comparative Examples 1-2

First, using a single covering device of the same type as shown in Fig. 2 in which the covering yarn spindles are mounted alternately shifted up and down, and attached with a pre-stretch application auxiliary roll, the total elongation ratio is set to 1 36 The elastic yarn was covered in the range from 6 to 3. 1 ◦ Nylon multifilament with 9 g Z denier and 5 single yarns wound around 2 denier polyurethane urethane elastic yarn at 2,400 t (turn) Zm Elastic yarn was produced. The pre-elongation ratio was set to a constant value of 1.6, and no heat-fixing treatment was applied in any case. Table 1 shows the respective processing conditions and the measurement results of the maximum elongation in the elastic region obtained by measuring the S-S curve of the obtained coated elastic yarn.

Furthermore, using a 4-port sock knitting machine with a 4-inch diameter and 4600 stitches, each of the above-mentioned coated elastic threads is used for the leg section, and normal thread is used for the panty section and the toe tip section. To organize the pantyhose and evaluate the wear by the try-on

1 2 Replacement form (Rule 26) Was carried out. The results are summarized in Table 1.

1 Table

Examples 4-6, Comparative Examples 3-4

Using a single-covering device equipped with a heating plate of the same type as shown in Fig. Was manufactured. Total elongation ratio, heat setting temperature and heat setting yarn speed ratio (1-3

Replacement form (Rule 26) Under the condition that the running speed ratio of the clothing elastic yarn is different, 10 denier polyurethane urethane yarn and 9 gZ denier, 6 denier single yarn with 5 yarns are used. The winding was performed at a rate of 0 rpm and 2,400 t (evening), and the elastic yarn was covered while maintaining the yarn speed at the end of the force-balancing at 1 OmZ. In some examples, the preceding elongation magnification was equal to or greater than the total elongation magnification. Subsequently, the sheet was brought into contact with a heating plate having a length of 20 cm, heat-set, and wound up into a package. Table 2 summarizes the processing conditions of each example and comparative example.

Second party

14 Replacement Form (Rule 26) Table 2 shows the measurement results of the maximum elongation in the elastic region obtained from the SS curve of each obtained coated elastic yarn. Further, in the same manner as in Example 1, each pantyhose was knitted on each leg portion using each covered elastic yarn, and its wearing evaluation was performed. The results are shown in Table 2.

Example 7

The panty-stocking was carried out in the same manner as in Example 1 except that the leg portion was constituted by the one-to-one alternate knitting of the coated elastic fiber produced in Example 4 and the 15-denier 3-filament twine yarn. They were knitted and their wearing was evaluated. The results are shown in Table 2.

Examples 8 to 12

Using a double force balling device of the same type as shown in Fig. 3, a nylon multifilament with 8 deniers, 9.1 gZ denier, and 7 single yarns was doubled on 13 denier polyurethane elastic yarn. Covered. The lower winding has a density of 2,800 t Zm at a speed of 28, OOO r pm.The upper winding has a density of 2,380 t Zm at a speed of 23,800 rp m. Double covering power burring was performed. Table 3 summarizes the total elongation ratio and the precedent elongation ratio set in Examples 8 to 12.

Table 3 shows the measurement results of the maximum elongation in the elastic region obtained from the SS curve of the obtained coated elastic yarn, and the results of the evaluation of wearing and the completion of the pantyhose in the same manner as in Example 1. Show.

Examples 13 and 14, Comparative Example 4

Example 13 uses the coated elastic yarn obtained in Example 3 in Example 3, Example 14 in Example 14, and Comparative Example 4 using the coated elastic yarn obtained in Comparative Example 2, with 20 denier and 20 filament in each case. One-to-one alternate knitting with nylon yarn is applied to the knitting of the body part of women's panties using a circular knitting machine with eight yarn feeders, a 12 inch diameter, and 9600 stitches. Complete, cutting, sewing, dyeing finish

1 5

^ Paper (Rule 26) number 3

And processed into women's panties. The tightness, coolness, and fashionability of these panties were evaluated. The evaluation results of the women's panties processed in Examples 13 and 14 showed that the tightening was soft, the sultry was low, and the fashionability was also popular. In particular, Example 13 was well received. The evaluation results of the women's panties processed in Comparative Example 4 showed that the tightening was strong, the sultry heat remained, and the fashionability was also consistent.

Replacement form (Rule 26) The evaluation was as good as the next product. After fitting on the 10th day, the panties of Examples 13 and 14 did not have any problem, but with the panties of Comparative Example 4, the seams and shrinkage at the switching section (cutting or pulling of the coated elastic yarn) Omission phenomenon) had occurred.

Industrial applicability

The textile product of the present invention is knitted or woven using a low-elongation covered elastic yarn having a maximum elongation of 20 to 100% in an elastic region. Compared to stretchable textile products, the tightening force is not only soft, it is durable, there is no pulling or yarn fraying, it is easy to wear, it is easy to take off, and the appearance when worn is disturbed It has excellent product characteristics that eliminates the unpleasant stuffiness of summer stocking products, which have been a major problem in the past, and gives a refreshing feeling of wearing. In the present invention, since the method and apparatus for manufacturing the above-mentioned coated elastic yarn are disclosed, the yarn can be easily manufactured.

7

Replacement form (Rule 26)

Claims

The scope of the claims

1. A textile product characterized by being constructed using a low-elongation coated elastic yarn with a maximum elongation of 20% to 100% in the elastic range.

2. A knitted fabric characterized by being knitted using a coated elastic yarn having a maximum elongation of 20% to 100% in an elastic region.

3. A stocking product characterized by being knitted using a coated elastic yarn having a maximum elasticity of 20% to 100%.

4. It is specially characterized that the leg portion is alternately knitted with the number of non-elastic yarns being 0 or 1 for the number of coated elastic yarns with the maximum elasticity of 20% to 100%. Stocking products.

5. Underwear products characterized by being knitted using coated elastic yarns with a maximum elasticity of 20% to 100% in the elastic range.

6. After the nylon yarn is covered on the elastic yarn, it is continuously heat-treated by heating at 170 ° C to 200 ° C. It has a maximum elasticity range of 20 to 100%. And coated elastic yarn.

7. Set the total elongation ratio to 1.3 to 2.8 times and cover the stretched elastic yarn with the covering yarn, and then continuously at 170 ° C at a running speed of 70 to 110% at the end of covering. A method of producing a coated elastic yarn, wherein the coated elastic yarn has a maximum elongation of 20% to 100% in an elastic region by performing a heat treatment at 200 to 200 ° C and heat setting.

8. Set the total elongation ratio to 1.3 to 2.8 times and force-bare the inelastic yarn to the stretched elastic yarn. Then, continuously run at a running speed of 75% to 105% at the end of the force baling. Heat treatment of ° C to 200 ° C,

18

Replacement form (Rule 26) A method for producing a coated elastic yarn, which comprises heat-setting to obtain a coated elastic yarn having a maximum elongation of 20 to 100% in an elastic region.

9. A covering elastic yarn with a maximum elongation in the elastic range of 20 to 100% by force-baring an inelastic yarn to an elastic yarn stretched to a total elongation ratio of 1.1 to 2.2 times. A method for producing a coated elastic yarn, comprising:

1 0. Set the pre-elongation magnification of the elastic yarn to a value greater than or equal to the total elongation magnification, and once pull out the elastic yarn from the package, adjust the continuously drawn elastic yarn to the required total elongation ratio. 8. The method for producing a coated elastic yarn according to claim 7, wherein covering is performed.

1 1. The coating elastic yarn heating means (1 1) passes through the heating means after the total elongation imparting roll (5) that regulates the running speed of the elastic yarn (6) in the force-balancing zone (7). A covering device characterized in that heat fixing speed control means (12) for regulating the running speed of the yarn is provided between the heating means and the coated elastic yarn winding device (10).

12. In a force-balancing device consisting of a plurality of weights whose length is shorter than the length of the leading stretch imparting roll (3) and the covering yarn spindle (8), the leading stretch imparting roll and force of the long weight of the thread trail are used. An extension grant auxiliary yarn feeding device (14) is provided between the burring yarn spindle and the yarn extension length (s') between the extension grant auxiliary yarn feeding device and the force burring yarn spindle. The covering device is characterized in that the length is adjusted to the length of the short weight (s).

-1 9 Replacement sheet (Rule 26)