JPH0411036A - Interlaced elastic yarn and elastic knit and woven cloth - Google Patents

Abstract

PURPOSE:To obtain the subject elastic yarn useful for bathing trunks, etc., having excellent stretchability hardly generating slippage even in a stretched state by previously making elastic yarn and non-elastic filament yarn to core- sheath structured yarn and interlacing non-elastic fiber yarn with fluid. CONSTITUTION:Core-sheath structured elastic yarn 4 comprising elastic yarn 2 as core yarn and non-elastic filament yarn A as sheath yarn is interlaced with non-elastic fiber body by fluid to afford the aimed elastic yarn 1. Besides, for instance, polyurethane elastic yarn is preferably used as the elastic yarn, multifilament, etc., of polyamide-based synthetic fiber as the filament A and polyester-based staple fiber bundle, etc., is preferably used as the non-elastic fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an interlaced elastic yarn using an elastic yarn as a core yarn, and further relates to an elastic 1 m product using the entangled elastic yarn.

[Conventional technology]

Conventionally, the following types of elastic yarns with a core-sheath structure using an elastic yarn as a core yarn are known.

■ There is a covered yarn in which an elastic yarn is used as a core yarn, and inelastic filament yarns such as nylon yarn or woolly nylon yarn are wound horizontally around the core yarn, or are pulled and twisted together. This covered yarn has a glossy surface because it uses inelastic filament yarn as the sheath yarn, and has high elasticity because it uses elastic yarn as the core yarn. For this reason, it is frequently used in innerwear, leg knits, and outerwear such as swimsuits and leotards. Note that double covered yarn, in which inelastic filament yarn is wound in a double coil, is used for leg knits, girdles, foundations for brassieres, and the like.

■ There is a core yarn (also called core spun yarn) that is made by spinning elastic yarn together with a bundle of inelastic short fibers by ring spinning or bundle spinning. This core yarn is used as a stretch yarn having the feel of spun yarn for pants such as denim and corduroy, and accessory knitted fabrics such as cuff elastics and hem elastics.

■ There is intertwined elastic yarn, which is made by aligning elastic yarn and filament yarn and stirring them with an air nozzle to mix and entangle them.

[Problem to be solved by the invention]

Although the covered yarn mentioned above has surface gloss,
Since single knitted fabric has turning force (torque),
However, it is essential to use left-right twisted yarn instead of single yarn, and there is a problem that it is difficult to obtain a high stretch fabric because it is easy to run or slip. Also, double covered yarns offer some improvement in slip and run, but
The problem is that the improvement is insufficient.

The core yarn (2) above has the feel of a spun yarn, but has poor elasticity, poor durability, and has drawbacks such as "stretching". In conventional core yarn fabrics, a two-way elongation of no more than 30% was the upper limit that could be achieved without slipping. For this reason, the uses of the fabric have been extremely limited.

Furthermore, although the intertwined elastic yarns mentioned above have been found in literature, they have not yet been put into practical use. This is because the mixing and entangling properties of the elastic yarn and filament yarn are poor, the core yarn is exposed, and the entangling strength is weak, etc., which have not been solved yet.

Therefore, the first object of this invention is to provide an intertwined elastic yarn that solves the problems of threads (1), (2), and (2) above, and which makes it possible to obtain an elastic knitted fabric that does not easily slip even when stretched, and is highly stretchable. This will be the subject of this study. Furthermore, a second object of the present invention is to provide an elastic i-fabric that can achieve greater stretchability without slipping or running than conventional fabrics, thereby expanding its range of uses.

[Means to solve the problem]

In order to solve the first problem, the interlaced elastic yarn according to the present invention uses an elastic yarn as a core yarn and an inelastic filament yarn (
It is made by fluidly entangling an inelastic fiber yarn (hereinafter referred to as "inelastic fiber yarn BJ") with a core-sheath elastic yarn having a sheath yarn (hereinafter referred to as "filament yarn A").

In order to solve the above second problem, the elastic knitted fabric according to the present invention has a core-sheath structured elastic yarn in which an elastic yarn is a core yarn and a filament yarn A is a sheath yarn, and an inelastic fiber yarn B is fluidly entangled with the core-sheath structure elastic yarn. It uses intertwined elastic threads. Here, elasticity Ia
The woven fabric refers to a knitted fabric, a woven fabric, or a fabric having both a knitted structure and a woven structure, and is stretchable in at least one direction.

The core-sheath structure elastic yarn used in the intertwined elastic yarn according to the present invention is a yarn in which the elastic yarn is the core yarn and the filament yarn A is the sheath yarn. Examples of such core-sheath structure elastic yarns include the following (1) and (2).

■ Covered yarn made by winding filament yarn A into a coil around elastic yarn.

■ Intertwine filament yarn A with elastic yarn by fluid entanglement,
Interlaced yarn made of mixed fibers.

As the elastic yarn used for the core-sheath structure elastic yarn, polyurethane elastic yarn, polyester elastic yarn, polyamide elastic yarn, etc. are widely used. The filament yarn A may be, for example, a multifilament yarn or monofilament yarn of synthetic fibers such as polyamide, polyester, polyacrylonitrile, polypropylene, vinyl chloride, etc., or a yarn with special properties such as antistatic and conductive. Inelastic yarns selected from the group consisting of filament yarns and crimped yarns thereof are used. Further, as the filament yarn A, it is better to use a multifilament yarn rather than a monofilament yarn. The preferred way to set the denier number and filament number of the filament yarn A and the denier number of the elastic yarn is, for example,
It is as follows. Preference is given to using filament yarns A having a filament count of 2 to 144 with a denier of 7 to 300 for elastic yarns of 10 to 140 denier. Outside these ranges, even if it is a covered yarn, the entangling performance may deteriorate due to fluid entangling during ash removal.

For example, the covered yarn (2) manufactured in the following manner is used. This method is applied to the conventional covering yarn twisting machine method and the method of aligning and twisting, but in order to improve the entangling performance, the draft magnification of the elastic yarn is set slightly higher, and the filament yarn A is actively overfeeded. It is important to More specifically, the number of twists is 200.
~1800T/m, draft magnification of elastic yarn 200~40
Either single or double covering may be used at 0%.

Further, as the interlaced yarn (2), for example, one manufactured in the following manner is used. The elastic yarn is stretched to a constant draft in a pair of draft zones and delivered to the interlacing zone. On the other hand, after filament yarn A is stretched at an arbitrary draw ratio and feed rate, it is passed through the elastic yarn and the entangling treatment nozzle (
(entangling nozzle). Although any entangling nozzle can be used that produces turbulence or swirl rather than rectification, a typical nozzle is the entangling nozzle available from Heperline under the trademark rHEMAJ. The conditions for the confounding process are set as follows, for example.

・Fluid pressure for entangling process 1.0-4.0 kg/cut ・Overfeed rate to filament yarn during entangling 0-5% ・Draft magnification of elastic yarn just before the entangling zone 100-30
0% ・Number of filament yarns A serving as sheath yarns: 1 to 2 ・Denier of entire elastic yarn with core-sheath structure: 15 to 150 deniers In this invention, inelastic fiber yarn B includes staple fiber bundles and filament yarns (hereinafter referred to as The filament yarn used as the inelastic fiber yarn B is referred to as "filament yarn C"). Examples of such stable fiber bundles include staples of inelastic synthetic fibers such as polyester, polyamide, polyacrylonitrile, and aromatic polyamide; staples of inelastic chemical fibers such as rayon, cupro, and acetate; and cotton. ,wool,
A fiber bundle consisting of a staple made of non-elastic natural fiber such as hemp; a stable made of non-elastic inorganic fiber such as metal or mineral; or a mixed staple of two or more thereof is used. As the filament yarn C, for example, a woolly nylon yarn as a crimped yarn, a synthetic fiber filament yarn such as a polyester yarn, or the like is used. The stable fiber bundle is preferably 600 to 100 gelens/30 yards. If it is outside this range, there is a risk of nozzle clogging or the thread slipping through the weak thread section. Further, the filament yarn C preferably has a denier of 10 to 300 and a number of filaments of 2 to 144. Outside these ranges, there is a risk of poor confounding.

Note that the combination of the filament yarn A and the inelastic fiber yarn B is set as follows, for example. The preferable ratio of the two is that the filament yarn A is in the range of 15 to 150 deniers, while the inelastic fiber yarn B is in the range of 30 to 300 deniers, and is set so that A/B = 1/2 (denier ratio). It is more preferable to do so. The combination of materials is crimped yarns for both A and B, or A:
B=Filament yarn: A combination of crimped yarn, etc. is used. When combining filament yarns, for example, the number of filaments of filament yarn A/the number of filaments of filament yarn C = 215 to 144/144, and the denier number of A/the denier number of C = 7/10 to
Continuous light is set in the range of 300/300. When filament yarn C is used as inelastic fiber yarn B, compared to the case where stable fiber bundles are used,
The surface gloss of the resulting knitted fabric is excellent.

The fluid entanglement of the core-sheath structure elastic yarn and the inelastic fiber yarn B to obtain the entangled elastic yarn according to the present invention is, for example,
This is done as follows. The primary feed of the elastic yarn with core-sheath structure is supplied at a high underfeed rate, and the inelastic fiber yarn B to be combined in fluid exchange 1 and the nozzle is supplied at a high overfeed rate. Another example is a method for manufacturing a core yarn using an interlacing device, in which a core-sheath elastic yarn is supplied in an elongated state together with a stable fiber bundle that is an inelastic fiber yarn B from a front roller to the entangling device. A part of the stable fiber bundle is wound around the outer periphery of the stable fiber bundle surrounding the core-sheath elastic yarn to obtain an intertwined elastic yarn. An entangling nozzle can be used with anything that produces turbulence or swirl rather than rectification, but
A typical nozzle is an entangling nozzle commercially available from DuPont of the United States under the trademark "Taslan Nozzle." The conditions for the confounding process are set as follows, for example.

・Fluid pressure for entanglement processing: 2.0 to 5. Okg/cj・Underfeed rate of inelastic fiber yarn B at the time of entanglement 5-50% (feed rate difference with respect to elastic yarn with core-sheath structure)・Draft magnification of elastic yarn with core-sheath structure just before the entanglement zone 100-250%・Sheath When using the number of non-elastic fiber yarns B to become a yarn: 1 and the denier of the entire interlaced elastic yarn...8 to 1203 (cotton count) The interlaced elastic yarn thus obtained is used to create elastic fabrics and elastic I can make knitted items. The elastic fabric is woven, for example, as follows. The same intertwined elastic yarns are used for the yarn-dyed warp and weft, and the loom is a sulzer or rapier type, and while the tension of the warp and weft is well controlled, it can produce plain weave, fill weave, or satin weave. After weaving with an appropriate weave density, it is finished and processed.

Further, the elastic knitted fabric is knitted, for example, in the following manner. For single knitting, an 18-28 gauge sinker circular knitting machine with a wide diameter (30 inches or more) pot is used.
The intertwined elastic yarn obtained as above can be used as it is (generated yarn) or after dyeing, it can be set at 250 mm depending on the purpose.
By knitting a single knitted fabric with 80 to 120% stretch in both the vertical and horizontal directions, set at ~400 g/m (grain weight), or by using various double-sided circular knitting machines that do not have to worry about running. Knit a double knit.

These elastic woven fabrics and elastic knitted fabrics are mainly used for sports purposes, such as seawater pants (swimming suits), leotards, and cycle pants, as well as for textile materials.

In this invention, the filament yarn A, the inelastic fiber yarn B, and the elastic yarn are not simultaneously supplied as separate yarns to the interlacing treatment zone for interlacing treatment, but the filament yarn A and the elastic yarn are pre-interlaced. Make the core-sheath structure elastic thread,
The concentric sheath structure elastic yarn and the inelastic fiber yarn B are simultaneously supplied to the entangling treatment zone for interlacing treatment. As a result, the number of stops due to yarn breakage is reduced, which improves the operating rate. Also, a large package is required for both machines due to high processing speed, such as an air entangling machine, or a three-way yarn feeder. It is possible to reduce the number of creel devices compared to the previous model.

[For production]

An elastic yarn with a core-sheath structure in which an elastic yarn is used as a core yarn and an inelastic filament yarn is used as a sheath yarn has high elasticity. In contrast to such elastic yarns with core-sheath structure, interlaced elastic yarns made by fluidly entangling inelastic fiber yarns are even more stretchable, and moreover, the inelastic fiber yarns are tightly entangled with the elastic yarns with core-sheath structure. ing.

Elastic taII products using such intertwined elastic threads are less prone to slipping (including looseness) and have good stretchability.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the entangled elastic yarn of the present invention will be described with reference to the drawings, but the present invention is not limited to what is shown in the drawings.

FIG. 1 (al) is a schematic side view of one embodiment of the intertwined elastic yarn of the present invention. As seen in this figure, the intertwined elastic yarn 1 has a core made of elastic yarn 2; , has a sheath portion consisting of a staple fiber bundle 3 that is an inelastic filament yarn A and an inelastic fiber yarn B. Staple fiber bundle 3
has a binding part 31 that twists around the elastic yarn 2 and the inelastic filament yarn A, and a heave part 32 that floats on at least one side of them. As seen in FIG. 2 (8), the core-sheath structure elastic yarn 4 used for the interlaced elastic yarn 1
is made by winding an inelastic filament yarn A around an elastic yarn 2 in a coil shape.

FIG. 11(b) is a schematic side view of another embodiment of the intertwined elastic yarn of the present invention. In the interlaced elastic yarn 10 of this embodiment, an inelastic filament yarn A is used as the elastic yarn 2 instead of the core-sheath structure elastic yarn 4 in the one shown in FIG. 1a).
Elastic yarn 5 with a core-sheath structure formed by intertwining and mixing fibers (Fig. 2(b)
)) is the same as that shown in FIG. 1(a).

FIG. 1(C) shows yet another one of the intertwined elastic yarns of the present invention.
FIG. 2 is a schematic diagram of the embodiment seen from the side. The intertwined elastic yarn 11 of this example is the same as that shown in FIG. 1 (al) except that inelastic filament yarn C was used as the inelastic fiber yarn B in the one shown in FIG. 1 (al). Similarly,
In what is shown in FIG. 1 (bl), an inelastic filament yarn C may be used as the inelastic fiber yarn B.

In FIG. 1, in order to make the structure of the yarn easier to understand, the inelastic fiber yarn in the center of the figure is shown in a broken state. Furthermore, in FIGS. 1 and 2, in order to make the structure of the core-sheath elastic yarn easier to understand, the filament yarn A is represented by a single thick line, but it may be a multifilament yarn.

FIG. 3 is a schematic diagram showing an example of manufacturing the intertwined elastic yarn shown in FIG. 1 (al). As shown in FIG. For example, a sliver is drafted between rollers 15 and 17 using an apron 16, and fed between conveyor belts 31 and 31', each of which has a wedge-shaped open end. The sheath structure elastic yarn 4 is entangled with the conveyor belts 31 and 31', and after passing through the nozzle 20, it is bent by a guide 35 in a direction having an angle θ with respect to the nozzle exit direction, and then passed through the delivery roller 18 and delivered to the winder. 19. Here, the reason why the yarn is bent in the direction having an angle θ is to strengthen the strength of the binding part and the unevenness of the yarn surface, thereby creating a fancy look. For example,
θ-0 to 45 degrees is appropriate. In the entanglement processing zone (between the roller 17 and the exit of the entanglement processing nozzle 20), the core-sheath elastic yarn 4 is applied to the stable fiber bundle 3 in a ratio of 5 to 50%.
2゜0~5.0k while feeding with % underfeed
Fluid (for example, air) is injected at a fluid pressure of g/- to intertwine and mix both yarns. In order for the sheath (stable fiber bundle or filament yarn C) to completely cover the sheath, the components of the sheath are set to overfeed.

FIG. 4 is a schematic diagram showing an example of manufacturing the intertwined elastic yarn shown in FIG. 1(C) above. As shown in FIG. 4, the core-sheath elastic yarn 4 and the filament yarn C are aligned and passed through the entangling treatment nozzle 20. A constant draft magnification is applied to the core-sheath elastic yarn 4 immediately before the entanglement processing zone (between the first feed roller 21 and the delivery roller 22). In the entanglement processing zone, for example, while supplying the draft magnification of the core-sheath elastic yarn 4 to 100 to 250% and the filament yarn C with an overfeed of 5 to 50%,
Fluid (for example, air) is injected from the nozzle 20 at a fluid pressure of 2.0 to 5.0 kg/csa to intertwine and mix both yarns. Wind up the yarn that has come out of the entanglement processing zone. As a result, the intertwined elastic yarn 11 shown in FIG. 1 (C1) is obtained.

Specific examples and comparative examples of the present invention are shown below, but the present invention is not limited to the following examples.

Example 1 - The core-sheath structure elastic yarn was prepared using a regular single-covering twisting machine to create circular knitted skin-wearing yarn 5270-E.Polyurethane elastic yarn (registered trademark "Opelon JT-127") manufactured by Toshi DuPont ■
, 20 denier) as the core thread, and woolly nylon thread (70 denier) as the core thread.
Denier, 34 filament, type 5000. Made of nylon 6) on the sheath. Draft ratio 3.5 times, number of twists 400 T/m (Zlfi)], filament yarn C is bundled and woolly nylon yarn made by ■ (registered trademark "Nylon Yox", 70 denier, 48 filament, type Y198, nylon An intertwined elastic yarn of the present invention (hereinafter sometimes referred to as rFTYJ) was manufactured using an intertwining treatment apparatus having the configuration shown in FIG. 4 under the following conditions.

Entanglement processing device - Draft magnification of core-sheath elastic yarn just before the entanglement processing zone: 200% - First feed roller (indicated by 21 in Fig. 4) Speed (VFl): 300 m/min - Delivery roller (indicated by 21 in Fig. 4) 22) Velocity (VD); 250 m/min・Overfeed rate (VPI/VD-1) (HEMA) After cheese-dying the resulting interlaced elastic yarn, weaving a 2/1 twill with vertical and horizontal weaving yielded an ultra-high-stretch two-way fabric. The same fabric has a stretch of 84% (vertical) x 92%.
(Horizontal) No slip occurred at all.

On the other hand, using the same interlaced elastic yarn after dyeing, jersey was knitted using a 24-gauge sinker circular knitting machine. It had a slightly thick feel, had a high stretch, and had high run generation power.

Both these woven and knitted products were suitable for swimwear.

Example 2 - Using an air entangling machine (manufactured by Aiki Seisakusho ■), polyurethane elastic yarn (manufactured by Toshi DuPont ■) was used as the core elastic yarn.
T-127C (clear type), 30 denier, registered trademark "Operon"] was used, and woolly nylon thread (15 denier, 10
Using a filament, type 127, made of nylon 66, registered trademark "Nylon "PTY""), an interlacing treatment was performed under the following conditions to produce an elastic yarn with a core-sheath structure.

・Draft ratio of polyurethane elastic yarn just before the entangling treatment zone: 3.5 times ・Primary feed rate of woolly nylon yarn: 3% underfeed rate ・Feed rate of woolly nylon yarn in the entanglement treatment zone: 4% overfeed Feed rate/interlacing nozzle i AW
Manufactured by A Manufacturing Co., Ltd. #MK-13・Fluid pressure (compressed air pressure);
2.5 kg/ct/processing yarn speed: 600 m/min Using the obtained core-sheath structured elastic yarn and Egyptian raw cotton roving (extra long raw cotton, thickness 200 gelen/30 yards), the third
A high quality cotton core spun yarn (cotton csy>barrel) was spun using a binding spinning machine having an air entangling nozzle as shown in the figure under the following conditions.

- Spinning count: fine count 70S (twist coefficient K = 4.2) - Front roller (indicated by 17 in Figure 3) speed (VF
); 105 m/min Delivery roller (indicated by 18 in Figure 3) speed (VD);
84m/min ・Overfeed rate (VP/VD-1) x 100; 25% ・Fluid pressure (compressed air pressure); 3. A plain weave (broad) with weft threads was woven using the obtained interlaced elastic yarn. The horizontal stretch of the fabric is 47% (1k
g under constant load). The fabric knitted using the same interlaced elastic yarn on a 28 gauge sinker circular knitting machine has a stretch of 8.
No run occurred at 5% (vertical) x 102% (horizontal). Furthermore, 650 m of pantyhose (panty part) was made using a stocking knitting machine (400 pieces x 3z inches φ).
The fabric could be knitted within 1 minute without any problems, and a product with soft heat retention was obtained.

Example 3 - Polyurethane elastic yarn (registered trademark "Opelon JT" manufactured by Toshi DuPont
-127, 20 denier) as the core yarn, and a special crimped woolly nylon yarn made by Toshi ■ (15 denier, 5 filament, type 27, made of nylon 6, registered trademark ``nylon "PTY") as the sheath. The core-sheath structure elastic yarn was obtained by winding it horizontally at a draft ratio of 3.5 times the elastic yarn and a twist number of 800 T/m (ZIIIJ).

In the next step, using this core-sheath structured elastic yarn and roving (using raw cotton mainly consisting of long wires, 220 gelens/30 yards), the following conditions were applied using a binding spinning machine with an air entangling nozzle, as in Example 2. We spun a high-grade cotton core spun yarn, an interlaced elastic yarn.

・Spinning count: Fine count 55S (Twist coefficient K = 4.2) ・Front roller speed (VF) i 120 m/min ・Delivery roller speed (VD): 92.5 m/min ・Overfeed rate (VF/VD- 1) After dyeing this thread with cheese, a plain weave with vertical and horizontal patterns was woven.
In addition, a tenjiku was organized using a 24-gauge sinker Maru III machine. The elasticity of the fabric is two-way, approximately 65% (vertical) x 5
8% (horizontal) stretch (under 1kg constant load),
And there were no slips at all. Similarly, the cotton jersey had a stretch of 104% (vertical) x 121% (horizontal) (under a constant load of 1 kg), and had a soft feel with no run at all under 20 kg f, making it suitable for body shirt fabric.

Comparative Example 1 The elastic yarn with core-sheath structure used in Example 1 was woven vertically and horizontally in the same manner as in Example 1 after cheese construction, and knitted using a 24-gauge sinker circular knitting machine. Elastic woven fabrics and elastic knitted fabrics shown in are obtained.

- Comparative Example 2 - Using an air entangling machine (manufactured by Aiki Seisakusho ■), polyurethane elastic yarn (manufactured by Toshi DuPont ■) was used as the core elastic yarn.
T-127, 20 denier, registered trademark "Operon"] was used, and woolly nylon (70 denier, 34 filament,
Type 5000, made of nylon 6, registered trademark "Cobes")
An elastic yarn with a core-sheath structure was manufactured using the following conditions.

・Draft ratio of polyurethane elastic yarn just before the interlacing treatment zone: 3.5 times ・Primary feed F rate of woolly nylon yarn: 2% underfeed rate ・Feed rate in the interlacing treatment zone of woolly nylon yarn; 5% Overfeed rate / Entanglement nozzle, manufactured by AWA Seisakusho #MK-13 / Fluid pressure: 1.8 kg / crA / Processing yarn speed: 520 m /
Min./Number of entanglements: 124 pieces/m The obtained elastic yarn with core-sheath structure was used as it was to weave vertically and horizontally in the same manner as in Example 1, and was knitted using a 24-gauge sinker circular knitting machine. Elastic woven fabrics and elastic knitted fabrics shown in the table were obtained.

Comparative Example 3 - The elastic yarn used in Example 1 and the stable fiber bundle used in Example 2 were applied to a ring silk spinning machine under the conditions shown in Table 1 to obtain conventional cotton C3Y. After making cheese with this cotton C3Y, vertical and
The elastic fabrics and knitted fabrics shown in Table 2 were obtained by weaving in the weft direction and knitting using a 24-gauge sinker circular knitting machine. In addition, this elastic knitted fabric was produced by changing the raw material yarn and interlacing treatment conditions as shown in Tables 1 and 2 in Examples 4 to 6, in which scratches occurred partially due to poor knitting. Except for the above, entangled elastic yarns were obtained in the same manner as in Examples 1 to 3.

The raw material yarns used were polyurethane elastic yarns manufactured by Toshi DuPont ■ (types 127.70 denier and 40 denier, and T-127C 120 denier: all registered trademarks "Opelon"). Filament yarn A is a woolly nylon yarn made by Toshi ■ (21O denier, 68 filaments, type 5000, made of nylon 6; registered trademark "Spark Nylon"), a woolly nylon yarn made by the same company (7 denier, 5 filaments, type 200) , Made of nylon 6: Registered trademark "Nylon "PTY"
'') manufactured by the same company (20 denier, monofilament, type 5800: super antistatic fiber, registered trademark ``Luana''). As the inelastic fiber yarn B, a 350 gel/30 yard roving (using raw rice cotton) was used. Filament thread C is woolly nylon thread (5
0 denier, 40 filament, type 5000, made of nylon 6: registered trademark "Royal Sophy") was used.

Elastic woven fabrics and elastic knitted fabrics were produced in the same manner as in Example 1 using the obtained intertwined elastic yarns.

Table 1 shows the raw material yarns for the intertwined elastic yarns, and Table 2 shows the specifications and fluid entanglement conditions for the intertwined elastic yarns.

In addition, the exposure degree and yarn form of the intertwined elastic yarns of Examples 1 to 6 and Comparative Examples 1 to 3, the surface gloss, stretchability, and slip of the obtained elastic fabrics, and the surface gloss, stretchability, and slippage of the obtained elastic knitted fabrics were also measured. The sex and tenjiku orchid generation are strong, respectively.
The results are shown in Table 2. The woven structure and knitted structure are also shown in Table 2.

(11 Exposure degree of intertwined elastic yarns While moving the yarn to be measured under constant tension (load 0.1 g/denier), it was visually judged using a universal projector (magnification: 80 times) and evaluated as follows. .

■...Things with no exposed elastic yarns △...Things with some exposure due to yarn dyeing or post-processing ×...Things occasionally seen when measuring intertwined elastic yarns××...
(2) The criteria for determining the yarn form of entangled elastic yarns is that the surface threads of the entangled elastic yarns are uniform, straight, and stable with torque balance. Core yarn type (Example 2~
4.6 and Comparative Example 3), ○... Strong cohesiveness and relatively less unevenness △.
・・Irregular items like fancy yarn × ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・334,433,33,40,30,30,200,200,200,200,300 300-500-3333-to-had snarled had snarled have been Interlaced yarn type (Example 1)
．． 5 and Comparative Example 1.2), ◎...good coverage, high bulkiness, and even and straight yarn surface ○...those with torque balance, especially with little snarling △: The torque balance tends to become unstable due to the added tension (those that tend to generate snarls are categorized as ×: those that cause a lot of jerking) and are ranked accordingly.

(3) The surface gloss of elastic woven and knitted fabrics was evaluated for smooth surface plain m < jersey), satin, fill, and circular knitted fabrics, so the surface gloss was approximately 30 to 50.
Using Comparative Example 1 as the standard (○) to the extent that reflected light is received when viewed vertically, horizontally, and diagonally from a distance of cm, those with better gloss than that are ◎, those with slightly inferior gloss are △, and very poor. Items were marked with an x.

(4) Stretchability of elastic woven and knitted fabrics Fabrics with stretchability of up to 30% have been obtained using cotton core spun yarn. Size 25cmX2
A 5 cm sample was cut out, and the tensile speed was 100 using a constant elongation tensile tester in the horizontal or vertical direction with a gripping interval of 20 cm.
Constant load in %/min 1. The following ranking was performed based on the degree of elongation up to Okg f. In this invention, greater than 20% and 40%
The following range was defined as the standard (O).

◎・・・Stretch larger than 40% and less than 100910○
...Stretch is larger than 20% but not more than 40%△...Stretch is larger than 5% and not more than 20%×...Stretch O
% or more and 5 Q or less On the other hand, among circular knitted jerseys, we decided to evaluate the stretch in the vertical direction, so we cut out a sample of size 20 cm x 20 cm, and tested it at a constant elongation tensile tester in the vertical direction at a tensile rate of 100% with a grip interval of 10 cm. The following ranking was done according to the elongation up to a constant load of 1 kg f in minutes ■... Strench 7
0% or more○...Stretch 50% or more and less than 70%△...Stretch 30% or more and less than 50%×...Stretch 10%
More than 30% (5) Slip of elastic fabric JIS L1062 (7) According to A method, load 0.45
It is expressed as the amount of slippage of the warp and weft threads (dragon) when the weight is 4 kg.

(6) Run generation of elastic knitted fabric A sample knitted fabric of tenacity 10 CIII
It was expressed as the starting force of run development (kg) when stretched in minutes. The higher the numerical value of the strength of generating tenjiku runs, the better. Furthermore, as a practical guideline (when sewing) for the strength of run generation, 2
Since a tensile force of around 1 kg is generated, the ranking is 1.
0 kg or more was judged as ◎, 2 kg or more and less than 12 kg as ×.

As shown in Table 2, the yarn of the example, which is the interlaced elastic yarn of the present invention, has no exposed degree at all compared to the yarn of the comparative example.
Furthermore, the yarn form is stable and there is no snarl defect.

In addition, the elastic knitted fabric using the yarn of the example has extremely excellent stretchability compared to that using the yarn of the comparative example.

〔Effect of the invention〕

Since the intertwined elastic yarn according to the present invention is as described above, when it is used, it is possible to obtain an elastic knitted fabric that is resistant to slipping even when stretched and is rich in stretchability.

Since the elastic knitted fabric according to the present invention uses the intertwined elastic yarns as described above, even in the case of two-way, the elasticity that can be achieved without slipping is greater than before, and this makes it possible to Development can be expanded.

[Brief explanation of drawings]

FIGS. 1(a), ('b), and (C) are schematic side views showing one embodiment of the intertwined elastic yarn according to the present invention, and FIGS. 2(a) and (b) are, respectively, The schematic side view, FIG. 3, and FIG. 4 showing one example of the core-sheath structured elastic yarn used in the present invention are schematic diagrams showing separate manufacturing examples of the intertwined elastic yarn according to the present invention. 1.10.11...Interlaced elastic thread 2...Elastic thread 3
... Staple fiber bundle as inelastic fiber yarn B 4.5.
... Core-sheath structure elastic yarn A ... Inelastic filament yarn C
... Inelastic filament yarn that is inelastic fiber yarn B Agent Patent attorney Takehiko Matsumoto 5\ 31' Figure A No. A

Claims (1)

[Scope of Claims] 1. An intertwined elastic yarn obtained by fluidly entangling an inelastic fiber yarn with an elastic yarn having a core-sheath structure in which an elastic yarn is a core yarn and an inelastic filament yarn is a sheath yarn. 2. An elastic knitted fabric using the interlaced elastic yarn according to claim 1.