JP3098757B2 - Confounding elastic yarn and elastic knitted fabric - Google Patents

Description

The present invention relates to a tangled elastic yarn having an elastic yarn as a core yarn,
Further, the present invention relates to an elastic knitted fabric using the confounding elastic yarn.

[Conventional technology]

Conventionally, as a core-sheath structure elastic yarn using an elastic yarn as a core yarn,
The following are known:

There is a covered yarn in which an elastic yarn is used as a core yarn, and a non-elastic filament yarn such as a nylon yarn or a wooly nylon yarn is wound around the core yarn, or the yarn is drawn together and twisted. This covered yarn has a surface gloss because it uses an inelastic filament yarn as a sheath yarn, and has a high elasticity because it uses an elastic yarn as a core yarn.
For this reason, it is often used in innerwear, leg knits, outerwear such as swimwear and leotards, and the like. In addition,
A double covered yarn in which an inelastic filament yarn is wound twice in a coil shape is used for foundations such as leg knits, girdles and brassieres.

There is a core yarn (also referred to as a core spun yarn) in which an elastic yarn is spun together with an inelastic short fiber bundle by ring spinning or binding spinning. The core yarn is used as a stretch yarn having a feeling of a spun yarn in pants such as denim and corduroy, and an attached knitted fabric such as a rubber cuff and a hem rubber.

There is an entangled elastic yarn in which an elastic yarn and a filament yarn are aligned, disturbed by an air nozzle, mixed, and entangled.

[Problems to be solved by the invention]

Although the above-mentioned covered yarn has a surface gloss, it has a turning force (torque) in a single knitted fabric,
It is essential to use left and right twisted yarns instead of single twisted yarns, 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 have some improvement in slip and run aspects, but have the problem of insufficient improvement.

The above-mentioned core yarn has a feeling of a spun yarn, but has drawbacks such as poor stretchability, poor durability, and “extension”. In conventional core yarn woven fabrics, at most 30% elongation in the two-way case was the upper limit that could be achieved without slip. For this reason, the use of the fabric has been extremely limited.

Further, the above-mentioned entangled elastic yarn has been found in the literature, but has not yet been put to practical use. This is due to poor blending and entanglement between the elastic yarn and the filament yarn, exposing the core yarn,
This is because the confounding strength and the like are unsolved.

SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to provide an interlaced elastic yarn which solves the above-mentioned problems of the above-mentioned yarn and the above-mentioned yarn, and which provides an elastic knitted fabric which is hardly slipped even when stretched and has high elasticity. . Further, a second object of the present invention is to provide an elastic knitted fabric which can achieve a greater stretchability without slip or without run than before, thereby expanding the range of applications.

[Means for solving the problem]

In order to solve the first problem, a tangled elastic yarn according to the present invention has a core-sheath elastic yarn having an elastic yarn as a core yarn and an inelastic filament yarn (hereinafter referred to as "filament yarn A") as a sheath yarn. And a fluid intertwined with an inelastic fiber yarn (hereinafter referred to as "inelastic fiber yarn B").

In order to solve the second problem, the elastic knitted fabric according to the present invention is configured such that an inelastic fiber yarn B is fluidly entangled with a core-sheath structure elastic yarn having an elastic yarn as a core yarn and a filament yarn A as a sheath yarn. Entangled elastic yarns. Here, the elastic knitted fabric refers to a knitted or woven fabric, or a fabric having both a knitted structure and a woven structure, and having elasticity in at least one direction.

The core-sheath structured elastic yarn used for the entangled elastic yarn according to the present invention is a yarn having the elastic yarn as the core yarn and the filament yarn A as the sheath yarn. Such core-sheath structured elastic yarns include, for example, the following.

A covered yarn formed by winding a filament yarn A in a coil shape around an elastic yarn.

The filament yarn A is entangled with the elastic yarn by fluid entanglement,
Entangled yarn made by blending.

As the elastic yarn used for the core-sheath structure elastic yarn, polyurethane elastic yarn, polyester elastic yarn, polyamide elastic yarn and the like are widely used. Examples of the filament yarn A include multifilament yarns or monofilament yarns of synthetic fibers such as polyamide, polyester, polyacrylonitrile, polypropylene, and vinyl chloride, and antistatic and conductive materials having special performance. Inelastic yarns selected from the group consisting of filament yarns and these crimped yarns are used. Also,
The filament yarn A is preferably a multifilament yarn rather than a monofilament yarn. A preferred method of setting the denier number and the filament number of the filament yarn A and the denier number of the elastic yarn is, for example, as follows. It is preferable to use a filament yarn A having a filament number of 2 to 144 at 7 to 300 denier for an elastic yarn of 10 to 140 denier. Outside of these ranges, even with covered yarns, there is a risk that the entangling performance will be reduced in subsequent fluid entangling.

As the covered yarn, for example, one manufactured as follows is used. It is applied mutatis mutandis to the conventional covering twisting machine method and the method of twisting by aligning, but the draft ratio of the elastic yarn is set slightly higher to improve the entanglement performance, and the filament yarn A is actively over-fed. It is important that More specifically, the number of twists is 200
Either single or double covering with a draft magnification of 200 to 400% of elastic thread at ~ 1800 T / m.

The entangled yarn used is, for example, one manufactured as follows. The elastic yarn is stretched to a draft with a constant magnification in a pair of draft zones, and sent out to the entanglement zone. On the other hand, the filament yarn A is stretched at an arbitrary draw ratio, and then supplied to the elastic yarn and the entanglement processing nozzle (entanglement nozzle). The entanglement nozzle can be any that produces turbulence or vortex flow rather than commutation, but a typical nozzle is the entanglement nozzle marketed by Heberline under the trademark "HEMA". Conditions for the confounding process are set, for example, as follows.

・ Fluid pressure of confounding treatment 1.0-4.0kg / cm ²・ Overfeed rate of filament yarn A at confounding 0
５5% ・ Draft magnification of elastic yarn immediately before entangling zone is 100 to 300% ・ Number of filament yarn A to be sheath yarn is 1 or 2 ・ Denier number of whole elastic yarn of core-sheath structure is 15 to 150 denier In this invention, it is inelastic The fiber yarn B includes a staple fiber bundle and a filament yarn (hereinafter referred to as an inelastic fiber yarn B).
(Referred to as "filament yarn C"). Examples of such a staple fiber bundle include staples of non-elastic synthetic fibers such as polyester, polyamide, polyacrylonitrile, and aromatic polyamide; rayon, cupra,
Staples of inelastic chemical fibers such as acetate; staples of inelastic natural fibers such as cotton, wool, and hemp; and staples of inelastic inorganic fibers such as metals and minerals;
A fiber bundle composed of two or more of these staples is used. As the filament yarn C, for example, a synthetic fiber filament yarn such as a wooly nylon yarn or a polyester processed yarn as a crimped yarn is used. Preferably, the staple fiber bundle has a thickness of 600 to 100 g / 30 yards. Outside of this range, there is a risk of clogging of the nozzle and pulling out of the weak yarn portion. The filament yarn C has a denier of 10 to 300 and a filament number of 2;
~ 144 is preferred. Outside of these ranges, poor confounding may occur.

The combination of the filament yarn A and the inelastic fiber yarn B is set as follows, for example. The preferred ratio of both is preferably such that the filament yarn A is in the range of 15 to 150 denier and the inelastic fiber yarn B is in the range of 30 to 300 denier, and A / B = 1/2 (denier ratio). More preferably, As the combination of the materials, a combination of crimped yarns for both A and B, or a combination of A: B = filament yarn: crimped yarn is adopted. When the filament yarns are combined, for example, the number of filaments of the filament yarn A / the number of filaments of the filament yarn C = 2/5 to 144/144, the number of deniers of A / the number of deniers of C = 7/10 to 300 / It is appropriate to set each in the range of 300. When the filament yarn C is used as the inelastic fiber yarn B, the surface gloss of the obtained knitted fabric is superior to the case where the staple fiber bundle is used.

The fluid entanglement of the core-sheath structured elastic yarn and the inelastic fiber yarn B for obtaining the entangled elastic yarn according to the present invention is performed, for example, as follows. The primary feed of the core-sheath structured elastic yarn is supplied at a high underfeed rate,
In addition, the inelastic fiber yarn B to be united by the fluid entanglement nozzle is supplied at a high overfeed rate. Another example is a method for manufacturing a core yarn using an entanglement device, in which a core-sheath structure elastic yarn is supplied to the entanglement device from a front roller together with a staple fiber bundle that is an inelastic fiber yarn B in an extended state, An entangled elastic yarn in which a part of the staple fiber bundle is wound and bound around the outer periphery of the staple fiber bundle wrapping the core-sheath structured elastic yarn is obtained. The confounding nozzle can be anything that produces turbulence or vortex rather than commutation,
A typical nozzle is a confounding nozzle commercially available from DuPont, USA under the trademark "Taslan Nozzle". Conditions for the confounding process are set, for example, as follows.

・ Fluid pressure of confounding treatment 2.0 ~ 5.0kg / cm ²・ Underfeed rate of inelastic fiber yarn B at confounding 5 ~
50% (difference in feed rate with respect to the core-sheath structure elastic yarn)-Draft magnification of the core-sheath structure elastic yarn immediately before the entangling zone is 10
0-250% ・ One inelastic fiber yarn B that becomes a sheath yarn Using the entangled elastic yarn thus obtained, an elastic fabric and an elastic knit can be produced. The elastic woven fabric is woven as follows, for example. The same entangled elastic yarn is used for the warp and weft yarns, and the loom is of the Sulzer or rapier type. The weave is made of plain weave, oblique weave (twill), or satin weave while sufficiently controlling the warp and weft tension. After weaving at an appropriate weaving density, a finishing process is performed. The elastic knit is knitted as follows, for example. In the single knit, the entangled elastic yarn obtained as described above is directly (generated yarn) or dyed on a 18 to 28 gauge sinker circular knitting machine having a wide diameter (30 inch or more) kettle. Depending on the device and application
Knit a single knitted fabric with a stretch of 80 to 120% in the vertical and horizontal directions, set to 250 to 400 g / m (with hanging weight), and use various double-sided circular knitting machines that do not cause run-out To form a double knit.

These elastic woven and elastic knitted fabrics include, for example, seawater pants (swimwear), leotards, and cycle pants.
It is mainly used for textile materials in addition to sports applications.

According to the present invention, the filament yarn A, the inelastic fiber yarn B, and the elastic yarn are not supplied separately to the entanglement processing zone at the same time as separate yarns, and the entanglement treatment is not performed. The core-sheath structure elastic yarn is provided, and the concentric-sheath structure elastic yarn and the inelastic fiber yarn B are simultaneously supplied to the entanglement processing zone so as to be entangled. As a result, the number of stops due to yarn breakage in the middle is reduced and the operation rate is improved, or an air-entangled processing machine with a high processing speed is required, and two large packages are required. The creel mechanism can be reduced as compared with.

[Effect] A core-sheath structured elastic yarn using an elastic yarn as a core yarn and an inelastic filament yarn as a sheath yarn is rich in elasticity. In contrast to such a core-sheath structure elastic yarn, a confounding elastic yarn obtained by fluidly entanglement of a non-elastic fiber yarn is further rich in elasticity, and the non-elastic fiber yarn is strongly entangled with the core-sheath structure elastic yarn. ing.

An elastic knitted woven fabric using such entangled elastic yarns is less likely to slip (including creases) and has good stretchability.

〔Example〕

Hereinafter, the present invention will be described with reference to the drawings showing one embodiment of the entangled elastic yarn of the present invention, but the present invention is not limited to the illustrated one.

FIG. 1 (a) is a schematic view of one embodiment of the entangled elastic yarn of the present invention viewed from the side. As shown in this figure, the entangled elastic yarn 1 has a core made of an elastic yarn 2 and a sheath made of a staple fiber bundle 3 that is an inelastic filament yarn A and an inelastic fiber yarn B. The staple fiber bundle 3 has a binding portion 31 that is swirled around the elastic yarn 2 and the inelastic filament yarn A, and a sweet twist portion 32 that is floating on at least one side thereof. As shown in FIG. 2 (a), the core-sheath elastic yarn 4 used for the entangled elastic yarn 1
Is obtained by winding a non-elastic filament yarn A around an elastic yarn 2 in a coil shape.

FIG. 1 (b) is a schematic view of another embodiment of the entangled elastic yarn of the present invention viewed from the side. The entangled elastic yarn 10 of this embodiment has a core-sheath structure in which an inelastic filament yarn A is entangled with and mixed with an elastic yarn 2 instead of the core-sheath structure elastic yarn 4 in the one shown in FIG. It is the same as that shown in FIG. 1A, except that the elastic yarn 5 (see FIG. 2B) is used.

FIG. 1 (c) is a schematic view of another embodiment of the entangled elastic yarn of the present invention as viewed from the side. The entangled elastic yarn 11 of this embodiment is the same as that shown in FIG. 1 (a) except that an inelastic filament yarn C is used as the inelastic fiber yarn B in the one shown in FIG. 1 (a). is there. Similarly,
In the fiber shown in FIG. 1 (b), 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 easy to understand, the inelastic fiber yarn in the center part of the drawing is shown in a broken state. In FIGS. 1 and 2, the filament yarn A is represented by a single thick line in order to make the structure of the core-sheath elastic yarn easy to understand, but a multifilament yarn may be used.

FIG. 3 is a schematic view showing one example of a case where the entangled elastic yarn shown in FIG. 1 (a) is manufactured. As shown in FIG. 3, a staple fiber bundle 3, which is an inelastic fiber yarn B, for example, a sliver is drafted between rollers 15 and 17 using an apron 16, and conveyer belts 31 and 31 having wedge-shaped open ends are provided. ′. The drafted fiber bundle 3 is entangled with the core-sheath structure elastic yarn 4 and the conveyor belts 31 and 31 ′ by the entanglement nozzle 20, and after passing through the nozzle 20, is guided by the guide 35 in a direction having an angle θ with the nozzle exit direction. And is taken up by a winder 19 through a delivery roller 18. Here, the bending in the direction having the angle θ is performed because it has the effect of enhancing the firmness of the binding portion and the unevenness of the yarn surface and producing a fancy tone. For example, θ = 0 to 45 degrees Is appropriate. In the entanglement treatment zone (between the roller 17 and the outlet of the entanglement treatment nozzle 20), the core-sheath structured elastic yarn 4 is supplied to the staple fiber bundle 3 at an underfeed of 5 to 50%, and the staple fiber bundle is 2.0 to 5.0 kg / cm. Fluid at a fluid pressure of ² , for example, air
And entangle and blend both yarns. In order for the sheath portion (staple fiber bundle or filament yarn C) to be completely covered, the material constituting the sheath portion is set so as to overfeed.

FIG. 4 is a schematic view showing one example of a case where the entangled elastic yarn shown in FIG. 1 (c) is manufactured. As shown in FIG. 4, the core-sheath elastic yarn 4 and the filament yarn C are aligned and passed through the entanglement nozzle 20. Immediately before the entanglement processing zone (between the first feed roller 21 and the delivery roller 22), a constant draft magnification is given to the core-sheath structured elastic yarn 4. In the entanglement treatment zone, for example, the core-sheath elastic yarn 4
To 100% to 250% draft ratio and 5 filament yarns C
Fluid (eg, air) at a fluid pressure of 2.0-5.0 kg / cm ² by nozzle 20 while feeding at ~ 50% overfeed
And entangle and blend both yarns. The yarn coming out of the confounding zone is wound up. Thereby, the entangled elastic yarn 11 shown in FIG. 1 (c) is obtained.

Hereinafter, specific examples and comparative examples of the present invention will be described, but the present invention is not limited to the following examples.

-Example 1-An elastic yarn having a core-sheath structure is a yarn S270-E for circular knitting using a normal single covering twisting machine [a polyurethane elastic yarn (registered trademark "Operon" T-127, manufactured by Dupont Toray Co., Ltd., Two
(0 denier) as the core yarn and wooly nylon yarn (70 denier, 34 filament, type 5000, made of nylon 6) at the sheath. Draft ratio 3.5 times, twist number 400T / m (Z
Twist)], using a wooly nylon yarn (registered trademark “Nylon Yox”, 70 denier, 48 filament, type Y198, made of nylon 6) manufactured by Toray Co., Ltd., and having the configuration shown in FIG. Using a confounding processing device
Under the following conditions, the entangled elastic yarn of the present invention (hereinafter sometimes referred to as “FTY”) was produced.

Entangling treatment conditions • Draft magnification of core-sheath structured elastic yarn immediately before entangling treatment zone; 200% • First feed roller (indicated by 21 in FIG. 4) Speed (VF1); 300 m / min • Delivery roller (in FIG. 4) , 22) speed (V
D); 250 m / min ・ Overfeed ratio (VF1 / VD-1) × 100; 20% ・ Fluid pressure (pressurized air pressure); 3.5 kg / cm ²・ Entangling nozzle; manufactured by Heverline (HEMA) The obtained entangling elasticity After dyeing the yarn with cheese, weaving a 2/1 twill using vertical and horizontal weaving resulted in an ultra-high stretch two-way fabric. This fabric had a stretch property of 84% (vertical) x 92% (horizontal), and no slip occurred.

On the other hand, using the same entangled elastic yarn after dyeing, a sheet of knitting was knitted with a 24-gauge sinker circular knitting machine. There was a feeling of depth of the ground, and the run generation power was high with high stretch.

Both these woven and knitted products were suitable for swimwear.

-Example 2-Using an air entanglement processing machine (manufactured by Aiki Seisakusho Co., Ltd.), polyurethane elastic yarn [T-127C (clear type), 30 denier, manufactured by Toray Dupont Co., Ltd.] as the core elastic yarn , A registered trademark "Operon"], and a filament yarn A of a sheath portion.
Woolly nylon yarn (15 denier, 10 filament, type 127, made of nylon 66, registered trademark "nylon" PTY "") manufactured by Toray Industries, Inc. Manufactured.

・ Draft ratio of polyurethane elastic yarn immediately before entangling treatment zone: 3.5 times ・ Primary feed rate of wooly nylon yarn; underfeed rate of 3% ・ Feed rate in entanglement processing zone of wooly nylon yarn; overfeed rate of 4% - interlacing nozzle; AWA Seisakusho Co., Ltd. # MK-13-fluid pressure (pressure pressure); 2.5 kg / cm ² · processed yarn speed; 600 meters / min and the core-sheath structure elastic yarn obtained, Egyptian cotton rovings ( Using a super-long cotton and a thickness of 200 gren / 30 yards), a high-quality cotton core spun yarn (cotton CSY) entangled elastic yarn is produced under the following conditions by a binding spinning machine having an air entangled nozzle shown in FIG. Spun out.

・ Spinning count: cotton count 70S (twist coefficient K = 4.2) ・ Front roller (indicated by 17 in FIG. 3) speed (V
F); 105 m / min. • Delivery roller (indicated by 18 in FIG. 3) speed (V
D); 84 m / min. ・ Overfeed rate (VF / VD-1) × 100; 25% ・ Fluid pressure (pressurized air pressure): 3.0 kg / cm ² Plain weave by driving the weft with the obtained entangled elastic yarn (broad) ). 47% of horizontal stretch property of textile
(Under a constant load of 1 kg). 28 using the same confounding elastic yarn
The knitted fabric knitted with the gauge sinker circular knitting machine is stretched
There was no run at 85% (vertical) x 102% (horizontal). In addition, stocking knitting machine (400 pieces × 3 1/2 inch φ)
With this, the pantyhose (panty part) can be knitted at 650 m / min without any problems, and a product with soft heat insulation was obtained.

-Example 3-Using a conventional single covering twisting machine, a polyurethane elastic yarn (registered trademark "Operon" T-127, 20 denier) manufactured by Toray Dupont Co., Ltd. as a core yarn, and a special yarn manufactured by Toray Industries, Inc. Crimped wooly nylon yarn (15 denier,
5 filaments, type 27, made of nylon 6, registered trademark "nylon" PTY ") are arranged on the sheath, and the draft ratio of the elastic yarn is 3.5 times, the number of twists is 800 T / m (Z twist), and the core is wound horizontally. A sheath structure elastic yarn was obtained.

In the next step, Example 2 was carried out using this core-sheath structured elastic yarn and roving yarn (using raw cotton mainly composed of long cotton; 220 g / 30 yards).
In the same manner as in Example 1, a tangled elastic yarn as a high-quality cotton core spun yarn was spun by a binding spinning machine having an air entangled nozzle under the following conditions.

・ Spinning count: Cotton count 55S (twist coefficient K = 4.2) ・ Front roller speed (VF); 120 m / min ・ Delivery roller speed (VD); 92.5 m / min ・ Overfeed rate (VF / VD-1) × 100 ; 30% ・ Fluid pressure (pneumatic pressure); 3.2kg / cm ^{2 The} obtained entangled elastic yarn (cotton CSY) has a sufficient yarn form.
In addition, the elastic yarn was completely exposed without any exposure. After the yarn was dyed with cheese, a plain weave using a vertical / horizontal weave was woven, and knitted with a 24 gauge sinker circular knitting machine. The stretch of the fabric is about 65% (vertical) x 58% in two ways
(Horizontal) stretch (under a constant load of 1 kg), and there was no slip at all. Similarly, Tenji is stretch 10
With a stretch of 4% (vertical) x 121% (horizontal) (under a constant load of 1 kg), it was suitable for a body shirt fabric with a soft feeling with no run at 20 kgf or less.

-Comparative Example 1- The core-sheath structured elastic yarn used in Example 1 was woven with the length and width in the same manner as in Example 1 after cheese dyeing, and knitted with a 24-gauge sinker circular knitting machine. The elastic woven fabric and the elastic knitted fabric shown in FIG.

-Comparative Example 2-Using an air entanglement processing machine (manufactured by Aiki Seisakusho Co., Ltd.), polyurethane elastic yarn [T-127, 20 denier, manufactured by Toray Dupont Co., Ltd., as a core elastic yarn, "Registered trademark" Operon "], and a wooly nylon yarn (70 denier, 34 filament, type 5000, nylon 6, registered trademark" Cobes ") manufactured by Kobe Seishin Co., Ltd. as the filament yarn A of the sheath portion under the following conditions. A core-sheath elastic yarn was produced.

・ Draft ratio of polyurethane elastic yarn immediately before entangling treatment zone: 3.5 times ・ Primary feed rate of wooly nylon yarn; underfeed rate of 2% ・ Feed rate of wooly nylon yarn in entangling treatment zone; overfeed rate of 5%・ Confounding nozzle: # MK-13 manufactured by AWA MFG. Co., Ltd. ・ Fluid pressure: 1.8 kg / cm ²・ Processing yarn speed: 520 m / min ・ Number of confounding: 124 pieces / m The obtained core-sheath elastic yarn is used as it is. In the same manner as in Example 1, weaving was performed using a warp and a weft, and knitting was performed using a 24-gauge sinker circular knitting machine to obtain an elastic woven fabric and an elastic knitted fabric shown in Table 1.

Comparative Example 3 The staple fiber bundle used in Example 2 was applied to the elastic yarn used in Example 1 on a ring spinning machine under the conditions shown in Table 1 to obtain a conventional cotton CSY. After the cotton CSY was dyed with cheese, it was woven with a length and width, and knitted with a 24-gauge sinker circular knitting machine to obtain an elastic woven fabric and an elastic knitted fabric shown in Table 2. The elastic knitted fabric was partially damaged due to poor knitting.

-Examples 4 to 6-Entangled elastic yarns in Examples 1 to 3 in the same manner as in Examples 1 to 3, except that the raw yarn and the entanglement treatment conditions were changed as shown in Tables 1 and 2. I got

The raw yarn used was an elastic yarn, manufactured by Toray Dupont Co., Ltd.
Polyurethane elastic yarns (type 127, 70 denier and 40 denier, and T-127C, 20 denier: registered trademark "Operon"). Filament yarn A is a wooly nylon yarn (210 denier, 68 filament, type 5000, made of nylon 6: registered trademark "Spark nylon") manufactured by Toray Industries, Inc., and a wooly nylon yarn (7 denier, 5 filament, type 200, made of nylon 6: registered trademark "nylon" PTY "), nylon yarn made by the company (20 denier, monofilament, type 580)
0: Super antistatic fiber, registered trademark “Luana”). As the non-elastic fiber yarn B, a roving yarn of 350 g / 30 yards (using raw cotton) was used. Filament yarn C is manufactured by Toray Industries, Inc.
Woolly nylon yarn (50 denier, 40 filament, type 5000, nylon 6: registered trademark "Royal Sophie") was used.

Using the obtained entangled elastic yarn, an elastic woven fabric and an elastic knit were manufactured in the same manner as in Example 1.

Table 1 shows the raw yarn of the entangled elastic yarn, and Table 2 shows the specifications of the entangled elastic yarn and the fluid entanglement conditions.

In addition, the degree of exposure and yarn form of the entangled elastic yarns of Examples 1 to 6 and Comparative Examples 1 to 3, the surface gloss, elasticity and slip of the obtained elastic fabric, and the surface gloss and elasticity of the obtained elastic knitted fabric were measured. The properties and the strength of the orchid orchids were examined, and the results are shown in Table 2. Table 2 also shows the woven structure and the knitted structure.

(1) Degree of exposure of the entangled elastic yarn While moving the yarn to be measured under a constant tension (load 0.1 g / denier), it was visually judged with a universal projector (magnification: 80 times) and evaluated as follows. .

◎: No elastic yarn exposed △: Pre-dyed or slightly exposed due to post-process × ×: Scattered at the time of measurement of entangled elastic yarn XX: 5 or more exposed places / m Existence (2) Yarn form of the entangled elastic yarn As a criterion, it is desired that the surface thread of the entangled elastic yarn is a uniform, straight, and torque-balanced stable yarn. (Example 2
In Examples 4 and 6 and Comparative Example 3),…: strong binding and relatively little unevenness…: fancy yarn-like irregular ×: torque balance is unstable, and it is easy to snare by additional tension And the snare is difficult to return to its original state due to the binding portion being hooked. In the filament entangled yarn type (Examples 1, 5 and Comparative Examples 1 and 2), High bulkiness and uniform and straight yarn surface ○: Torque balance, especially with little occurrence of snare △: Torque balance is likely to be unstable due to added tension and snare is likely to occur × … They are classified into those that tend to be more viscous.

(3) Surface gloss of elastic woven and knitted fabrics In all cases, the woven and knitted fabrics were evaluated with smooth surface plain weave (sheet-cloth), satin, twill and circular knitted fabrics, and were about 30 to 50 cm.
Very poor in glossiness, compared with that of Comparative Example 1 as a reference (○), with a degree of receiving reflected light visually from a vertical, horizontal, or oblique direction. Was judged as x.

(4) Elasticity of elastic woven / knitted fabric The stretchable woven fabric has an upper limit of 30% using cotton core spun yarn. Cut out a sample of 25cm x 25cm in size, and at constant gripping distance of 20cm, constant load at 100% / min.
The following ranking was performed with elongation up to 1.0 kgf. In the present invention, the range of more than 20% and 40% or less was set as a reference (○).

◎… Stretch more than 40% and less than 100% ○… Stretch more than 20% and less than 40% △… Stretch more than 5% and less than 20% ×… Stretch 0% or more and less than 5% We decided to evaluate the stretch in the vertical direction, cut out a sample of 20 cm × 20 cm in size, stretched to a constant load of 1 kgf at a gripping interval of 10 cm at a tensile speed of 100% / min. The following ranking was performed.

◎… Stretch 70% or more ○… Stretch 50% or more and less than 70% △… Stretch 30% or more and less than 50% ×… Stretch 10% or more and less than 30% (5) Slip of elastic fabric Load is 0.454kg by A method of JIS L1062. It was expressed in the amount of slippage [mm] of the warp and weft at the time of f.

(6) Run generation strength of elastic knitted fabric When a sample knitted fabric with a size of 10 cm x 10 cm is cut out and stretched at an automatic tensile tester (tensilon type tension) with a grip width of 5 cm and a grip interval of 3 cm at a tensile speed of 50 cm / min. The starting strength of the run was expressed in kg. It is preferable that the numerical value of the sheet running power is large. Furthermore, as a practical guide (when sewing) about 2 kg of tension is generated as a practical guide for run generation strength, rank 10 kg or more as 、, 2 kg or more as 、, 2 kg
Less than was judged as x.

As shown in Table 2, the yarn of the embodiment, which is the entangled elastic yarn of the present invention, has no degree of exposure and is free from snare defects with a stable yarn form, as compared with the yarn of the comparative example.

Further, the elastic knitted fabric using the yarn of the example has extremely excellent elasticity as compared with the yarn using the yarn of the comparative example.

[Effect of the Invention] Since the entangled elastic yarn according to the present invention is as described above, it is possible to obtain an elastic knitted fabric which is hardly slipped even when stretched and has high stretchability. .

Since the elastic knitted fabric according to the present invention uses the entangled elastic yarn as described above, the stretchability that can be achieved without slipping even in the case of two-way is greater than in the past. Deployment can expand.

[Brief description of the drawings]

1 (a), 1 (b) and 1 (c) are schematic side views each showing one embodiment of an entangled elastic yarn according to the present invention,
FIGS. 2 (a) and 2 (b) are schematic side views showing an example of the core-sheath elastic yarn used in the present invention, and FIGS.
FIG. 4 and FIG. 4 are schematic views each showing a separate production example of the entangled elastic yarn according to the present invention. 1,10,11… entangled elastic yarn, 2… elastic yarn, 3… non-elastic fiber yarn B, staple fiber bundle, 4, 5… core-sheath structure elastic yarn, A… non-elastic filament yarn, C …… Inelastic filament yarn B

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) D02G 3/32 D02G 3/22 D02G 3/36

Claims (2)

(57) [Claims] An entangled elastic yarn obtained by fluidly entanglement of a non-elastic fiber yarn with a core-sheath structured elastic yarn having an elastic yarn as a core yarn and an inelastic filament yarn as a sheath yarn. 2. An elastic knitted fabric using the entangled elastic yarn according to claim 1.