JPH0913238A - Textured yarn by jetting fluid - Google Patents

Abstract

PURPOSE: To produced textured yarn which has an appearance like raschel lace yarn and a hand rich in soft and voluminous feeling by using regenerated cellulose multifilament yarn of a specific Young's modulus as sheath yarn and treating the sheath yarn together with core yarn with fluid jet. CONSTITUTION: Regenerated cellulosic multifilament yarn with a Young's modulus of 70-100g/d is used as sheath yarn 2 and treated with fluid jet together with core yarn. The difference in the yarn overfeed between the sheath yarn and the core yarn is preferably kept more than 50% to give unique fluid jet textured yarn closely resembling raschel lace yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid jet textured yarn, and more particularly to a fluid jet textured yarn having an appearance like a Russell molding yarn.

[0002]

2. Description of the Related Art A molding yarn composed of a core yarn and a floral yarn is widely used for various purposes because of its unique design effect. Generally, mall yarns are known to use a Russell knitting machine, so-called Russell mall yarns, and so-called twisted yarn yarns using a twisting machine. However, it has a problem of low productivity and high cost because it uses a Russell knitting machine.

[0003]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a fluid-jet processed yarn which is excellent in terms of productivity and cost, has an appearance like a Russell mole yarn, and has a soft and rich texture. It is provided.

[0004]

According to the present invention, in a fluid-jet processed yarn comprising a sheath yarn and a core yarn, the sheath yarn has a Young's modulus of 7 or less.
A fluid-jet processed yarn, which is a regenerated cellulose multifilament yarn of 0 to 100 g / d. The sheath yarn used for the fluid-jet processed yarn of the present invention has a Young's modulus of 70.
-100 g / d, preferably 70-90 g / d regenerated cellulose multifilament yarn. If it is less than 70 g / d, it becomes a so-called mere Taslan textured yarn, which is different from the appearance of Russell molding yarn, and if it exceeds 100 g / d, the texture becomes hard and the production is difficult. The regenerated cellulose multifilament yarn having a specific Young's modulus as described above is obtained by the so-called net process method or continuous spinning method.

The regenerated cellulose multifilament yarn used for the sheath yarn in the present invention means cupra and viscose rayon. In the fluid jet processed yarn of the present invention, it is most preferable that all the regenerated cellulose multifilament yarns used for the sheath yarn are composed of the regenerated cellulose multifilament yarns having the above specific Young's modulus.

The fluid jet processed yarn of the present invention may be mixed with other filament yarn, for example, Young's modulus 70
A composite yarn composed of a sheath yarn and a core yarn in which the regenerated cellulose multifilament yarn of ˜100 g / d constitutes the yarn surface in a proportion of preferably 20% or more, more preferably 50% or more is also included. Particularly preferred is a composite yarn having a sheath-core structure in which a regenerated cellulose multifilament yarn having a Young's modulus of 70 to 100 g / d used in the present invention constitutes the entire sheath portion.

Mixing of regenerated cellulose multifilament yarn and other filament yarn is the same or different, 70 to 1
Combinations of regenerated cellulose multifilaments such as those having different Young's moduli in and outside the range of 00 g / d are mentioned. Also, for example, wool other than 70 to 100 g / d regenerated cellulose multifilament,
Cotton, linen, polynosic rayon, LYOC
ELL, manufactured by Courtles Co., Ltd., trade name TENCEL) {Journal of The Textile Society of Japan (Fiber and Industry), 48 [11] p. 584-591
(1992)}, and combinations with synthetic fibers such as acetate and polyester. Synthetic fibers are, for example,
So-called ultrafine fibers with a denier of 0.05 to 0.5 denier, regular yarn with a denier of 0.5 to 5 denier, drawn false twisted yarn (DTY) of partially drawn yarn (POY), spin take-up Examples thereof include yarns, high-speed spun yarns such as spin draw take-up yarns, highly shrinkable polyester fibers, and polyester differently shrinkage mixed fiber yarns.

The mixing method is not particularly limited, and examples thereof include mixing fiber, intertwisting, covering, false twisting, and fluid injection processing. The denier of the regenerated cellulose multifilament yarn may be appropriately selected as desired, and for example, single yarn denier is preferably 1 to 3 denier and total denier is preferably 50 to 150 denier.
Moreover, the cross section of the single yarn may also be a modified cross section such as a round shape or a flat shape.

The fluid jet processed yarn of the present invention is 70-100.
It is obtained by using a regenerated cellulose multifilament yarn having a Young's modulus of g / d as a sheath yarn and performing fluid jet processing together with a core yarn. The yarn feed amount (overfeed rate) of the sheath yarn having a large yarn feed amount and the core yarn having a small yarn feed amount is at least 5
It is preferable that there is a difference of 0% or more, and it is more preferable that a sheath yarn structure is generated with a difference of 60 to 150%, since a slightly different thing similar to Russell mole yarn can be obtained.

In the fluid jet processed yarn of the present invention, the difference in yarn length between the sheath yarn and the core yarn is preferably 30 to 100%, more preferably 40 to 80%. The core yarn used for the fluid jet processed yarn of the present invention is the same regenerated cellulose multifilament yarn as the sheath yarn, and different regenerated cellulose multifilament yarn, or the Young's modulus specified as the sheath yarn in the present invention and the Young's modulus outside the specified range. Regenerated cellulose multifilament yarn of Further, synthetic fibers such as acetate and polyester can be used. Synthetic fibers include, for example, so-called ultrafine fibers having a denier of 0.05 to 0.5 denier, regular yarn having a denier of 0.5 denier or more and 5 denier, and drawn false twisted yarn (DTY) of partially drawn yarn (POY). ), High-speed spun yarns such as spin take-up yarns and spin draw take-up yarns, multi-filament yarns such as high-shrinkage polyester fibers and polyester different-shrinkage mixed yarns, and bulky finished yarns obtained by false twisting or jetting.

If necessary, a matting agent, a pigment, a light stabilizer, a heat stabilizer, an antioxidant, an antistatic agent, a dyeing property or an adhesiveness improving agent, etc. are added, or the single yarn cross section is round. Mold, Y
Shaped, L-shaped, W-shaped, triangular, flat and other irregular cross sections may be used. It is preferable that the single yarn denier of the core yarn is larger than that of the sheath yarn because it is firm and elastic, but if it exceeds 5 denier, the soft feeling may be impaired. The total denier of the core yarn is preferably 30 to 150 denier, and further 50
~ 150 denier is good.

The fluid-jet processed yarn of the present invention, which comprises a sheath yarn and a core yarn, is generally knitted and woven into a cloth, but it is used by being interwoven with other filament yarns or spun yarns depending on the purpose.
For example, a normal polyamide or polyester yarn having a single yarn denier of 0.1 to 3 denier, 4000 m / min or more, or 6
Polyamide yarn obtained by a spin take-up method in which spinning is performed at a winding speed of 000 m / min or more, or a spin draw-up method in which spinning-drawing-winding is performed in a series of steps at a winding speed of 4000 m / min or more It is used by knitting and weaving polyester yarn (including bulky yarn), but 50%
It is preferable to use the following mixture to obtain a fabric having the characteristics of a fluid jet processed yarn composed of a sheath yarn and a core yarn.

Further, the fluid-jet-processed yarn of the present invention may be knitted or woven with the sheath-core structure bulky yarn and the elastic fiber to form a stretchable fabric. In this case, the elastic fiber is preferably 20 to 50 denier, more preferably 30 to 40 denier polyurethane elastic fiber, which may be a bare yarn or a covering yarn. The covering yarn includes a single or double covering yarn and a coated bulky elastic yarn obtained by fluid jet processing or the like, but as the covering yarn or the covering yarn, a recycled yarn used as a sheath yarn with the fluid jet processed yarn of the present invention is used. It is preferable to use the same cellulose multifilament yarn in terms of feeling.

[0014]

The present invention will be specifically described below with reference to examples.
The Young's modulus is a value obtained by dividing the stress of 1% elongation by denier.

[0015]

Example 1 The sheath yarn has a Young's modulus of 70 g / d, 80 g / d.
Three kinds of 100d / 40f viscose rayon multifilament yarns having different d and 100g / d were used. As the core yarn, 100 d / 40 f viscose rayon multifilament yarn having a Young's modulus of 80 g / d was used. The overfeed rate at the time of fluid jet processing is 120
%, The core yarn is 5%, the difference in the overfeed ratio is 115%, the yarn is processed under the following fluid jet processing conditions, and the yarn length difference between the sheath yarn and the core yarn is 70%. Got Fluid jetting conditions Air pressure; 7 kg / cm ² water application; Yes Yarn speed: 80 m / min A 14 GG flat knitted fabric was prepared using the obtained fluid jetting yarn.

The resulting knitted fabric has a fluid jet textured yarn similar to that of Russell Mall yarn but has a slightly different appearance and a soft and rich texture, which is similar to Russell Mall yarn and has a feel of volume. Met.

[0017]

Comparative Example 1 A fluid jet processed yarn was obtained in the same manner as in Example 1 except that a sheath yarn having a Young's modulus of 60 g / d was used. The obtained fluid jet textured yarn was almost the same as the conventional so-called Taslan textured yarn, and the appearance was not particularly new.

[0018]

[Comparative Example 2] 50d / 24f nylon 66 multifilament yarn (boiling water shrinkage ratio 4) obtained by spinning a sheath yarn by a spin take-up system at a winding speed of 5500 m / min.
%), And Example 1 except that a nylon 66 multifilament yarn of 20d / 7f (boiling water shrinkage rate 12%) was used as the core yarn.
Similarly, a fluid jet textured yarn was obtained.

The obtained fluid jet textured yarn was a conventional so-called Taslan textured yarn, and the appearance was not particularly new.

[0020]

Example 2 A fluid jet processed yarn was obtained in the same manner as in Example 1 except that 20d / 7f nylon 66 multifilament (boiling water shrinkage ratio 12%) was used as the core yarn. The obtained fluid-jet-processed yarn was used as a weft yarn, and a 70d / 68f nylon 66 multifilament yarn was used as a warp yarn to weave a plain woven fabric, which was dyed and finished according to a conventional method. The obtained woven fabric had an appearance similar to that of Russell Mall yarn, but had a unique appearance that was slightly different from the conventional one, a soft and voluminous texture, and was firm and elastic.

[0021]

EFFECTS OF THE INVENTION The fluid-jet-processed yarn of the present invention is entangled with each filament, and the tip of the filament is not cut but looped in a three-dimensional (three-dimensional) manner. Although it has an appearance similar to that of a molding yarn, it has an appearance that is slightly different from the conventional one and is extremely excellent in productivity.

Therefore, when the fabric is knitted, it has a feeling of unevenness, has a good cover factor, has a small basis weight, is light,
You can get a soft and voluminous texture.

[Brief description of the drawings]

FIG. 1 is a side view of a fluid-jet processed yarn of the present invention schematically showing a state in which filament filaments are entangled with each other.

FIG. 2 is a side view of a conventional Russell molding yarn, schematically showing a state in which sheath yarns are bundled and the tip is cut.

[Explanation of symbols]

 1; Core yarn 2; Sheath yarn

Claims (1)

[Claims] 1. A fluid jet processed yarn comprising a sheath yarn and a core yarn, wherein the sheath yarn is a regenerated cellulose multifilament yarn having a Young's modulus of 70 to 100 g / d.