JP2903608B2 - Composite yarn and fabric - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a composite yarn and a fabric in which a short fiber bundle and a filament yarn composed of ultrafine fibers are combined.

[Prior art] Conventionally, composite yarns in which a filament yarn and a natural fiber such as cotton fiber are combined can be improved in strength and hygroscopicity, as well as the stretchability and tension of a fabric, and many are manufactured. .

Recently, from the diversification of consumer needs, in order to cope with the demand for softening the feeling of the composite yarn, research on composite technology has also been actively conducted, for example, as disclosed in There has been proposed a composite yarn obtained by overfeeding a filament yarn and winding it around short fibers, and a method and an apparatus for producing the same.

[Problems to be Solved by the Invention] The composite yarns formed by the above-described methods have reduced fuzz and improved ironing properties because the filament yarn is exposed on the surface of the yarn, and are excellent in sublimeness and form stability. The hardness and stiffness of the filament material became apparent, and the fabric had a drawback that a soft hand was not obtained.

The present invention seeks to overcome such disadvantages,
It is an object of the present invention to provide a composite yarn and a fabric in which the filament yarn is composed of ultrafine fibers and which has a good feel while maintaining excellent functionality.

[Means for Solving the Problems] The present invention has the following configuration to achieve the above object. That is, in the composite yarn composed of the short fiber bundle and the filament yarn, the single fiber fineness of the filament yarn is 0.1d or less, and the number of filaments is 300 or more, and the filament yarn surrounds the short fiber bundle. The composite yarn is characterized in that the ratio of the length of the filament yarn constituting the composite yarn to the length of the short fiber bundle is 1.02 to 1.8 when the composite yarn is wound and untwisted.

 Hereinafter, the present invention will be described in more detail.

The filament yarn constituting the composite yarn of the present invention has a single fiber fineness of 0.1 d or less, preferably 0.09 d or less.

The present invention is intended to give a soft and slimy feel by causing ultrafine filament yarns to appear on the yarn surface as much as possible and bringing ultrafine denier fibers into direct contact with human hands and skin.

In other words, as much microfilament yarn appears on the composite yarn surface as possible, so that it touches human hands and skin, and if it is intended to achieve softening, it enters into the gaps of fingerprints of ordinary people and gives slimy and softness The size is said to be 3 to 4 microns or less. For example, fine powders of less than 3 microns give excellent sliminess and softness. That is, even if the fiber has a diameter of 3 to 4 microns or less, excellent softness cannot be obtained.

The relationship between fiber denier and diameter is the fiber diameter L (μ),
Denier (d), the specific gravity of the material ρ, Is represented by For example, denier corresponding to a fiber diameter of 3 microns or less in a polyester (ρ = 1.38) is 0.09d or less. That is, the denier of the present invention is required to be 0.1d or less in order to obtain softness due to rigidity and sliminess from the fingerprint interval, and above this, good slimy softness cannot be obtained. .

Furthermore, the number of single fibers is not particularly limited because the number of ultrafine denier fibers gives softness to contact with hands and skin, but the number of single fibers is preferably 300 or more in the composite yarn. Moreover, it is important to make the ultrafine filament appear on the surface of the composite yarn as much as possible, so that it comes into direct contact with the hands and skin, and when the composite yarn is untwisted,
It is preferable that the ratio of the length of the filament yarn constituting the composite yarn to the length of the short fiber bundle is in the range of 1.02 to 1.8.

The composite yarn formed by winding a fine denier filament yarn around the core short fiber described above maintains the swelling of the short fiber in addition to the softness from the filament yarn described above. This leads to resilience and compression elasticity in the fabric.

Furthermore, a large number of fine denier filaments in the sheath suppress fluff of short fibers and can provide a fabric excellent in pill resistance.

The measurement of the ratio of the length ratio at the time of untwisting described above is based on JIS L109
5 In accordance with the method of the number measurement of 7.15, set the composite yarn on a twister, set the gripping interval as the average fiber length of the short fibers, read the length of the short fiber bundle after untwisting, After cutting with scissors, the length of the filament yarn was measured and expressed by the ratio of the length of the filament yarn / the length of the short fiber bundle.

The short fiber component is not particularly limited, but is preferably a material having a small decrease in physical properties due to a solvent at the time of division described below. By using natural fibers such as cotton, it is possible to obtain a fabric that has moisture absorption and water absorption as well as soft feeling. In addition, by combining the dampness coming from the fine denier filaments with hemp or thick denier short fibers, it is possible to obtain a soft, firm and resilient cloth. Further, by giving high shrinkage to the filament component and the short fiber component, a dense woven fabric can be obtained, which is suitable for a coated fabric or the like.

Furthermore, by raising a knitted fabric and a woven fabric consisting of a composite yarn in which fine denier filaments are wrapped around short fibers, a product with a downy hair touch, which cannot be obtained with 100% spun yarn, can be obtained. It will be preferable for the application.

The above-described filament yarn is produced, for example, as follows.

The composite multifilament yarn has a sea-island structure, and is composed of a plurality of island components, a sea component surrounding the island components so as to fill them, and being eluted by the chemical treatment.

The island component constituting the sea-island type composite fiber is not particularly limited, and is, for example, polyamide or polyester. Further, as the sea component, one having a different solvent solubility from the island component may be used. As a combination of island component / sea component,
Nylon-6 or 66 / polyethylene terephthalate,
Alternatively, nylon-6 or 66 / polystyrene can be used.

Among them, polyester is suitable as the island component, and polyester obtained by copolymerizing dimethyl 5-sodium sulfoisophthalate is suitable as the sea component.

Instead of the elution-type multifilament, a split-type composite multifilament yarn may be applied within the above range.

The total denier of the filament yarn and the single yarn denier before the elution treatment are not particularly limited, but it is important that the denier constituting the island component is 0.1 denier or less. For example, 50 denier before elution, 7 filaments (single yarn) Denier = 7.1d) Sea / island component ratio = 20/80%, 70 islands
If it is a book, the denier of the filament after the elution treatment is 0.
Get 08d.

The total number of filaments after elution is 490.

The division treatment is not particularly limited, and may be performed in any form such as a state of a filament or a composite yarn, and further, a state of a fabric. However, since it is an ultrafine fiber, a fabric treatment is desirable in terms of handling.

As an example of the polyester-based elution treatment on the cloth, the polyester is treated with maleic acid (3 g / l, 130 ° C. × 30 minutes), and then divided as a desealing treatment by NaOH 40 g / l, 98 ° C. × 50 minutes.

Next, the two components are used to form a composite yarn. The two components are combined so as to maintain a constant difference in the supply amounts of the two components during twisting.

Vf, the feeding speed of filament and single fiber, respectively
By setting Vs to Vf> Vs, a composite yarn having a filament disposed in the sheath and a short fiber disposed in the core can be obtained.

When Vf = K · Vs (K: multiplier), in the case of a short core fiber or a sheath filament, it is preferable to adopt a range of K = 1.02 to 1.8.

The multiplier K is dependently determined by the mixing ratio of the filament and the short fiber and the twist condition.

Next, an example of a manufacturing process for obtaining the composite yarn of the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 is a schematic side view showing an example of a manufacturing process for obtaining a composite yarn of the present invention, and FIG. 2 is a front enlarged view of a main part of FIG.

In the figure, a roving 1 of a short fiber component is sequentially supplied to a back roller 2, an apron roller 3 and a front roller 4 to obtain a desired fleece 10.

The front top roller 4 above the front bottom roller 9 is a stepped roller having a large diameter portion and a small diameter portion. On the other hand, the filament 6 passes through the feed device 5 through the tension adjusting device (tensor) 7, passes through the gap between the small diameter portion 8 of the front top roller 4 and the front bottom, is combined with the fleece 10, bundled by twisting, and Wind up the yarn.

The filament yarn was wound around the short fiber by synchronizing the speed of the front bottom 9 and the speed of the feed device 5 so that the relationship between the feed speed Vs of the fleece 10 and the supply speed Vf of the filament was Vf> Vs. Obtain a composite yarn.

Example 1 As a short fiber component, 1.5 d x 38 mm polyester and cotton (for 45 s of cotton) were blended at a weight ratio of 40/60% to produce a 2.0-number roving, and the spinning draft was 30.0 times. The fleece was spun through the large diameter portion of the stepped top roller shown in FIG. The fleece count was 60s.

On the other hand, 50 denier, 9 filament (single yarn denier =
5.5d) Polyester-eluting composite fiber multifilament yarn (island component: polyester, sea component: copolymerization of dimethyl 5-sodium sulfoisophthalate, sea / island component ratio = 20/80%, number of islands = 70) / 1 fil, single fiber denier =
0.063d), the filament is creeled,
After passing through the feed device through the tension adjusting device (tenser),
After passing through the gap between the small-diameter portion of the stepped top roller and the bottom roller, it was combined with the fleece and wound around a yarn at a twist of 22.86 t / in. The ratio Vs / Vf of the feeding speed of the fleece and the filament from the feeding device was 0.86. The ratio of the length of the filament to the length of the short fiber bundle at the time of untwisting was 1.17. The obtained composite yarn was a composite yarn in which a filament yarn was wound around a single fiber bundle at the core, and the count of the composite yarn was 36.2 s. 90 times this composite yarn
After twisting at ℃ × 20min, knit a smooth ground with a 20 gauge double-sided circular knitting machine, wash with hot water, maleic acid 3g / l,
An acid treatment was performed at 130 ° C. for 35 minutes. Continue with NaOH 40g / l, 98
The sea was removed at 55 ° C. for 55 min and stained at 130 ° C. for 45 min. The obtained knitted fabric was very soft and had an excellent effect on baby underwear and the like.

[Effect of the Invention] As described above, the composite yarn of the present invention, as described above,
Made of ultra-fine filament yarn, it has uniform sublimeness, has water absorption, and has fine fibers on the surface, so it has a calm luster and sliminess, and is a high-grade composite yarn with excellent softness. is there.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an example of a manufacturing process for obtaining a composite yarn of the present invention, and FIG. 2 is a front enlarged view of a main part of FIG. Description of reference numerals in the drawing 1: roving yarn 2: back roller 3: apron roller 4: front top roller 5: feeding device 6: filament yarn 7: tension adjusting device (tenser) 8: small diameter portion 9: front bottom roller 10: freeze

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI D06M 11/38 D06M 13/184 13/184 5/02 G (58) Field surveyed (Int.Cl. ⁶ , DB name) D02G 3/00-3/38

Claims (2)

(57) [Claims] 1. A composite yarn comprising a short fiber bundle and a filament yarn, wherein the filament yarn has a single fiber fineness of 0.1d or less, and the number of filaments is 300 or more. When the filament yarn is wound and the composite yarn is untwisted, the ratio of the length of the filament yarn constituting the composite yarn to the length of the short fiber bundle is 1.02 to
A composite yarn characterized by being 1.8. 2. A fabric comprising the composite yarn according to claim 1.