JPH0892831A - Combined crimped yarn - Google Patents

Abstract

PURPOSE: To obtain a combined crimped yarn for worsted-toned woven fabrics with peach skin touch, by combined false twisting of a thick-and-thin yarn comprising splittable ultrafine conjugate fibers and a multifilament yarn lower in elongation than the former. CONSTITUTION: A thick-and-thin yarn as a high-elongation yarn comprising splittable ultrafine conjugate fibers each made up of two components, polyethylene terephthalate and block polyether-ester copolyester and a regular polyester multifilament yarn, as a low-elongation yarn, are arranged in parallel with each other and interlaced, and then false-twisted into a combined crimped yarn. The combined crimped yarns are subjected to specified additional twisting and then woven, by using them as warps into a satin fabric, which is then scoured and subjected to relaxation and alkali treatment to effect splitting the thick-and-thin yarns into ultrafine fibers <=0.5d in single fiber fineness followed by dyeing the treated satin fabric to obtain a woven fabric with peach skin touch.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a composite crimped yarn. More specifically, it relates to a composite crimped yarn that gives a very natural peach skin touch feeling.

[0002]

2. Description of the Related Art Woven fabrics using a composite crimped yarn obtained by subjecting two or more kinds of polyester multifilament yarns having different elongations to entanglement and mixed fiber and then false twisting them, have a soft touch. It is well-received as a carded-like woven fabric that has elasticity and elasticity while maintaining elasticity, but recent market needs call for a fabric with a softer texture and bulge, or a slightly different fabric. There is. Japanese Patent Application Laid-Open No. 1-1246 has a soft texture.
In Japanese Patent Publication No. 51, a single yarn denier is 0.
It has been proposed that a fabric having an extremely soft texture can be obtained by using an ultrafine fiber having a denier of 5 denier or less, but a slight improvement in the soft texture is observed, but the bulge is hardly improved.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a carded-like woven fabric which meets such market needs and which is further changed.

[0004]

That is, according to the present invention,
A composite crimped yarn obtained by false twisting a polyester multifilament yarn having a difference in elongation of at least one kind, and is an ultrafine fiber having a single denier of 0.5 denier or less after splitting as a high elongation yarn. The composite crimped yarn is characterized in that a sick and thin yarn of the split type ultrafine composite fiber is used.

The composite crimped yarn used in the present invention is disclosed in, for example, JP-A-1-124651 and JP-A-2-139440.
Yarns having different elongations, such as highly oriented yarns and partially oriented yarns, which are exemplified in Japanese Patent Publication, are aligned and supplied to an interlace nozzle, and after mixed fiber entanglement, false twisting or stretch false twisting is performed. It is obtained by performing crimping.

In the present invention, a split type ultrafine composite fiber in which ultrafine fibers having a denier of a single yarn after splitting of 0.5 denier or less, which are used as high elongation yarns, are basically bonded to each other or have solubility in a solvent. A composite fiber made by combining two different types of thermoplastic polymers. Usually, a fabric or sheet is made, and then two types of polymers are separated or one of them is melted and peeled off, and a fabric made of ultrafine fibers. Or a sheet is obtained, but if necessary, a composite fiber in which three or more kinds of thermoplastic polymers are combined may be used, and three or more kinds of polymers are separated or one or more kinds are melted and peeled off. Good.

The present invention is characterized by the use of such sick and thin yarns of the composite fiber, which gives a soft and bulge in addition to a carded tone with firmness and elasticity and excellent resilience. Furthermore, it gives a very natural peach skin touch without raising hair. The thick and thin yarn of the composite fiber can be obtained by a conventionally known method for producing a thick and thin yarn, for example, Japanese Patent Publication No. 51-7207.
Japanese Patent Publication No. Sho 63-6367, Japanese Patent Laid-Open No. 63-1
It can be obtained by the method disclosed in Japanese Patent No. 8241. The thick-and-thin yarn is a multifilament yarn composed of single-filament filaments in which unstretched portions are distributed in the yarn length direction, and the unstretched portion here means a portion having a lower degree of stretching than the stretched portion. . The ratio of unstretched part is length 2
It is preferable that 1 to 3 unstretched portions of about 20 mm are randomly distributed per 10 cm of the single yarn filament.

In the present invention, as the polymer constituting the conjugate fiber, known combinations are possible, for example,
Polyamides such as nylon 6, nylon 66 and nylon 612, copolymers thereof, polyesters such as polyethylene terephthalate and polynaphthalene terephthalate, cation dyeable polyesters etc. copolymers thereof, polymers such as polypropylene and polyethylene and copolymers thereof. A polymer is used, but a combination of polyesters and a combination of polyester and polyamide are preferred because of their versatility. If necessary, known additives such as stabilizers, matting agents and antistatic agents may be contained in a small amount. The monofilament filament of the composite fiber preferably has a non-circular cross section of triangular to octagonal, the monofilament denier is preferably 0.5 to 3 denier, and the total denier is 30 to 150 denier.

Particularly, in the present invention, Japanese Patent Laid-Open No. 4-126814.
It is composed of a thermoplastic polymer of AB type 2 as disclosed in Japanese Patent Publication No. JP-A No. 2003-242242, the A component can be divided into 4 to 8 in the shape of a convex lens, and the A component occupies 7% of the total area of the fiber cross section.
0 to 90%, 95% or more of the total circumference is 100 to 100
Since the composite fiber having a content of less than 10% is excellent in easy splitting, it is suitable for achieving the object of the present invention.

Depending on the properties of the polymer to be combined, the dividing method may be a method of mechanically peeling with a high-pressure fluid such as beating, squeezing, or a pouring flow, or one of the components may be dissolved with a solvent or a decomposing agent, and then separated and peeled. There are ways to do these, and a combination of these. In particular, in the present invention, one of the two polymers or 3
A method of dissolving, dividing and removing one or more of the polymers of two or more types and peeling them is preferable in terms of obtaining swelling and extremely natural peach skin touch. The single yarn denier after splitting is preferably 0.5 denier or less, preferably 0.01 to 0.3 denier, more preferably 0.05 to 0.2 denier, beyond which the object of the present invention is not achieved. However, if it is less than this, it becomes difficult to spin or divide the composite fiber.

On the other hand, a low elongation yarn usually has an elongation of 50.
There is no limitation as long as it is not more than%, and conventionally known yarns can be used, but preferably one to a plurality of hollows continuously extending along the length direction of the single yarn filament. Parts, those with non-circular cross section of triangle to octagon, those containing known additives such as various stabilizers, matting agents, antistatic agents, cationic dyeable polyester, thick and thin yarn (unstretched part) As for the ratio, the unstretched portion having a length of 2 to 20 mm is randomly distributed in an amount of 1 to 3 per 10 cm of single filament, hollow or non-circular cross section, and a matting agent such as titanium oxide is contained. So-called semi-dal,
Fuldal yarn is preferred), spontaneous crimp type conjugate fiber (which means that when two components having different shrinkage properties are joined and then shrunk by heating or swelling, a three-dimensional coiled crimp is produced, the compound form is a parallel type or Eccentric sheath core type), high shrinkage yarn, ordinary split type ultrafine composite fiber, single yarn denier of 4 ~
One or more combinations of 6 denier thick denier yarn and the like (for example, thick denier hollow yarn), single yarn denier 1-4
A polyester multifilament yarn having a denier and a breaking elongation of 50% or less and an initial tensile resistance of 900 kg / mm ² or more after boiling water treatment is preferable.

The mixing ratio of the high elongation yarn and the low elongation yarn may be appropriately selected according to the purpose. For example, the mixing ratio of the high elongation yarn and the low elongation yarn is 30:70 to 50:50, The ratio of yarn denier is low elongation yarn / high elongation yarn = 1.5 to 3.5, and the yarn length of high elongation yarn is 8% or more, preferably 10 to 25% than that of low elongation yarn.
It is long, and the number of entangled portions is preferably 50 or more per 1 m of the yarn length, more preferably 80 to 120 / m. By performing additional twisting of about 500 to 2500 T / m on the composite crimped yarn obtained by false twisting the high elongation yarn and the low elongation yarn, the carded tone is further emphasized. When performing false twisting, the high elongation yarn may be subjected to relaxation heat treatment at 130 to 170 ° C. at a relaxation rate of about 5 to 30% and then supplied to false twisting.

The composite crimped yarn of the present invention is usually effectively used as a woven fabric, but it may be used as a knitted fabric, 100% of the composite crimped yarn or mixed with other fiber yarns. Well, the mixed form may be appropriately selected according to the purpose. For example, taking a woven fabric as an example, a composite crimped yarn is used for one of the warp yarn or the weft yarn, and another fiber yarn is used for the other, or a mixture of the composite crimped yarn and another fiber yarn is used for the warp yarn and the weft yarn. Alternatively, one of the warp yarn and the weft yarn may be a mixture of the composite crimped yarn and the other fiber yarn, and the other may be the composite crimped yarn or the other fiber yarn.

As a method of mixing the composite crimped yarn and the other fiber yarn in one of the warp or the weft, in the case of mixing in the warp, a method of simultaneously sizing the both and a method of preparing the warp by separately sizing the both There is a way to do it. For mixing with wefts, a weft free exchange loom may be used. Other fiber yarns to be mixed include those exemplified as the low elongation yarn, ultrafine fibers having a single yarn denier of 1 denier or less, different shrinkage mixed yarns, and mixed yarns including spontaneously extensible yarns. Yes, it may be appropriately selected according to the purpose.

Regarding the structure of the woven fabric, there are flat, twill, satin, and these modified structures, but the satin structure is particularly preferable. The warp density is preferably 130 to 200 lines / inch, more preferably 150 to 180 lines / inch, and weft is 50 to 9 lines.
0 line / inch is preferable, and 60 to 80 is more preferable.
The number of lines / inch and the finish density are preferably 150 to 220 lines / inch, more preferably 170 to 200 lines / inch, and the weft is preferably 60 to 100 lines / inch, and more preferably 70 to 90 lines / inch. .

As a finishing step, after weaving, scouring relaxation, division treatment, alkali weight reduction processing of about 10 to 35% (which may also serve as division treatment), and then dyeing finishing processing are carried out in a conventional manner. In addition, for example, emery paper,
Brushing such as so-called peach skin may be applied with a brush, a needle cloth, or the like, and various finishing processes such as embossing and printing may be performed. Further, finishing agents such as softening agents, water repellents and antistatic agents may be used.

[0017]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the examples. Example 1 As a component A, polyethylene terephthalate having ηsp / c = 0.73, and as a component B, polyethylene terephthalate, a block polyether ester (ηsp) obtained by copolymerizing 15% by weight of polyethylene glycol having a molecular weight of 4000.
/C=0.72), a 6-division type ultrafine composite fiber was spun at a spinning winding speed of 1500 m / min, and an undrawn yarn of polyester multifilament yarn of 120d / 72f was preheated at 60 ° C and hotplate temperature was 120 ° C. , Stretch ratio 2.2
5. Thick and thin yarn of 65d / 72f polyester multi-filament yarn drawn at a speed of 1000 m / min.
1-2 pieces were randomly distributed per 0 cm. Elongation 51
%) Was obtained.

8% of this thick and thin yarn at 150 ° C.
Using a high elongation yarn that has been subjected to a relaxation heat treatment at a relaxation rate of 75 d / 36f regular polyester multifilament yarn (elongation 27%) as a low elongation yarn, interlace treatment, and false twisting 120 in the composite crimped yarn obtained (11% difference in yarn length, 80 entanglements / m)
A warp yarn and a weft yarn were obtained by subjecting an additional twist of 0 T / m. A warp density of 150 yarns / inch, a weft yarn density of 67 yarns / inch, and a woven fabric with a satin (2 jumps) structure of 5 sheets, scouring and relaxing, alkali weight reduction (weight reduction rate 28%), and dyeing and finishing to make the warp density 177 The number of threads / inch and the weft density were finished at 82 threads / inch. The component B of the high elongation yarn was completely removed, and the single yarn denier of the component A after division was 0.15 denier.

In Example 1, in addition to the carded tone having elasticity, elasticity and resilience, soft texture and swelling, and the surface of the woven fabric has countless fine fluffs and extremely fine fluffs. It had a natural peach skin touch.

Comparative Example 1 A woven fabric was prepared by false twisting in the same manner as in Example 1 except that 85d / 350f polyester multifilament undrawn yarn with Δn = 0.045 was used as the high elongation yarn. Finished (however, brushed emery paper was added) (alkali weight loss was 8%). The denier of the single yarn of the high elongation yarn after finishing was 0.14 denier. The comparative example 1 had a combed feel with a soft texture, but was inferior in bulging and volume, and had fine fluff exposed due to raised hair, but had an artificial peach skin touch.

COMPARATIVE EXAMPLE 2 A triangular cross-section having three well spaces and 5 to 15 mm
Example 1 except that the thick and thin yarn of the 75d / 24f polyester multi-filament yarn, which has two undrawn portions of the length of 2 per 10 cm of the single yarn filament at random, is used in place of the thick and thin yarn of Example 1. In the same manner, false twisting is performed to make a woven fabric, and finishing is performed in the same manner (however,
Brushed emery paper was added) (reduction rate of alkali is 8%). Comparative Example 2 has a soft texture, swelling,
It was inferior in volume, and fine fluff appeared due to weight loss and raising, but it was a normal raised product far from the peach skin touch.

Comparative Example 3 A woven fabric was prepared by false twisting in the same manner as in Example 1 except that the ordinary drawn yarn of the 75d / 72f 6-division type ultrafine composite fiber was used in place of the thick and thin yarn of Example 1. It was made and finished in the same manner (however, emery paper brushing was added) (alkali weight loss was 8%). Although Comparative Example 3 had a soft texture, it was a normal false twisted yarn that was far from a worsted-like texture, and was bulged and inferior in volume, and fine fluff appeared due to raised hair, but it was an artificial peach. It had a skin touch.

Example 2 A woven fabric was prepared by false twisting in the same manner as in Example 1 except that the thick and thin yarn of the 6-division type ultrafine composite fiber of 85d / 72f was used in Example 1 and finished in the same manner. .
In the same manner as in Example 1, in Example 2, in addition to the carded tone with firmness and elasticity, which is excellent in resilience, it has a soft texture and swelling, and the surface of the fabric has numerous fine fluffs, such as feathers. It had a very natural peach skin touch.

Example 3 ηsp / c = 0.57 containing 2.2 mol% of dimethyl (5-sodium sulfo) isophthalate, and ηs containing no polyester and copolymer containing 0.2% of titanium oxide.
Ordinary polyesters containing p / c = 0.70 and titanium oxide 0.2% were separately melted, compounded side by side with a compounding ratio of 1: 1 and spun and wound. Then stretch to 7
Spontaneous crimp type composite fiber (elongation 2
5% and a crimp elongation rate 8% after boil were obtained. A false twist process was carried out in the same manner as in Example 1 except that this was used as a low elongation yarn, and a woven fabric was made, and similarly finished. The sample of Example 3 was more excellent in stretchability than the sample of Example 1.

[0025]

Industrial Applicability According to the present invention, it is possible to provide a composite crimped yarn which gives a very natural peach skin touch in addition to a carded tone.

Claims (1)

[Claims] 1. A composite crimped yarn obtained by false twisting two or more kinds of polyester multifilament yarns having different elongations, wherein the single yarn denier after division as a high elongation yarn is 0.
A composite crimped yarn comprising a sick and thin yarn of a split type ultrafine composite fiber in which ultrafine fibers of 5 denier or less are joined.