JP2002302839A - Combined filament yarn and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined filament yarn suitable for obtaining sophisticated suede-toned fabrics presenting intense comfortable slipperiness as well as excellent soft touch. SOLUTION: This combined filament yarn comprises a lower-shrinkage yarn and a higher-shrinkage yarn; wherein the lower-shrinkage yarn is such that the filament is splittable to a fineness of 0.02-0.9 dtex, the thermal stress is <=0.1 cN/dtex, and the elongation at break is 70-180%, while the higher- shrinkage yarn is such that the single filament fineness is 2-10 dtex, the thermal stress is >=2 cN/dtex, and the boiling water shrinkage is <=40% and higher than that of the lower-shrinkage yarn by >=2%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed yarn for obtaining a suede-like fabric and a method for producing the same. More specifically, it is a blended yarn capable of forming a core-sheath type double-layered yarn having a sheath portion of an ultrafine yarn, and is a blended yarn for obtaining a suede-like fabric which is not only excellent in a soft feeling but also has a strong slimy feeling. The present invention relates to a yarn and a method for producing the yarn.

[0002]

2. Description of the Related Art Conventionally, as a fiber for obtaining a suede-like fabric, a core-sheath type two-layer structure yarn using a fine filament multifilament for a core and a microfilament multifilament for a sheath, a high shrink multifilament, or the like. Different shrinkage mixed yarns in which a filament and a low shrinkage multifilament are mixed are known. However, these suede-like fabric fibers usually have an elongation of 1%.
Since it is composed of drawn yarn of about 0 to 50%, a soft feeling can be obtained, but a sufficient feeling in terms of sliminess has not yet been obtained. Also, as a fiber for suede-like fabric, a fiber that has been subjected to false twisting is also known, but the fiber that has been subjected to false twisting has a bulky feeling when touching the surface of the fabric, but has a drawback that the gloss is dull. In addition, a satisfactory softness and slimy feeling cannot be obtained.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to provide a blend for obtaining a suede-like fabric having a strong slimy feeling while maintaining a soft feeling. It is an object of the present invention to provide a fiber and an effective method for producing the same.

[0004]

Means for Solving the Problems The inventors of the present invention have made intensive studies to achieve the above object, and have found that a multifilament A and a multifilament B which are splittable conjugate fibers are mixed. In the mixed yarn, the multifilament A and the multifilament B are each formed into a multifilament having predetermined physical properties and fineness, so that the mixed fiber is formed into a fabric, and the multifilament A is formed into an ultrafine yarn. The inventor has found that a fabric having not only a feeling but also a strong slimy feeling can be obtained, and the present invention has been completed.

[0005] Thus, according to the present invention, "firstly, in a mixed yarn obtained by mixing a multifilament A and a multifilament B which are conjugate fibers capable of being split, the multifilament A has a filament It can be divided into fineness of 0.02 to 0.9 dtex, thermal stress is 0.1 cN / dtex or less, and elongation is 70 to 180.
%, While the multifilament B has a single fiber fineness of 2 to 10 dtex and a thermal stress of 0.2 cN / dte.
x or more and the boiling water shrinkage ratio is 40% or less, and the multifilament B has a boiling water shrinkage ratio of the multifilament A
Mixed yarn characterized by having a boiling water shrinkage of 2% or more. Secondly, the mixed fiber according to the first aspect, which is twisted with a twist number of 300 T / m or more. Third, the mixed fiber according to the first or second, wherein the polymer constituting the mixed fiber is polyester. Fourth, an undrawn multifilament A, which is a conjugate fiber having an elongation of 120 to 200% and a filament capable of being divided into finenesses of 0.02 to 0.9 decitex,
The multifilament B having a single yarn fineness of 2 to 10 decitex is aligned and subjected to a fiber mixing treatment at a relaxation rate of 3% or less.
By contacting for 0.009 seconds, the thermal stress of the multifilament A is 0.1 cN / dtex or less and the elongation is 7
0 to 180%, the thermal stress of the multifilament B is 0.2 cN / dtex or more, the boiling water shrinkage is 40% or less, and the boiling water shrinkage of the multifilament B is 2 times smaller than the boiling water shrinkage of the multifilament A. % Or more. Fifth, after performing a heat treatment with a heated roller, a non-contact type heater heated to 160 ° C. to 240 ° C. is used.
The method for producing a mixed fiber according to the fourth aspect, wherein the reheating treatment is performed for 4 seconds.
Sixth, an undrawn multifilament A, which is a conjugate fiber having an elongation of 120 to 200% and a filament capable of being divided into finenesses of 0.02 to 0.9 decitex, is drawn at a draw ratio of 0.9 to 1.3. By performing the drawing heat treatment in the range of 2 times, the thermal stress of the multifilament A is set to 0.1 cN / dtex or less, the elongation is set to 70 to 180%, and then the single yarn fineness is 2 to 10 dtex and the thermal stress is 0.2 cN. / Dtex
As described above, a method for producing a mixed fiber, comprising mixing a multifilament B having a boiling water shrinkage of 40% or less and a boiling water shrinkage of the multifilament A higher by 2% or more. A seventh aspect is the method for producing a mixed fiber according to the sixth aspect, wherein a contact-type heating plate heater heated to 120 to 240 ° C. is used when the multifilament A is subjected to the drawing heat treatment. 8th
When multi-filament A is stretched and heat-treated, 200
The method for producing a mixed fiber according to claim 6, wherein a non-contact type heater heated to -400 ° C is used. Ninth, the sheath has a single yarn fineness of 0.02 to 0.9 decitex, and the single yarn elongation 70 to 18
A core-sheath type two-layer yarn composed of 0% extra-fine multifilaments, while the core portion is composed of multifilaments having a single yarn fineness of 2 to 10 dtex. Furthermore, a tenth is a woven or knitted fabric containing at least a part of the core-sheath type two-layer structure yarn. Is provided.

[0006]

Embodiments of the present invention will be described below in detail.

First, the multifilament A constituting the mixed yarn of the present invention has a filament content of 0.02 to 0.9.
It is a composite fiber that can be divided into decitex. The type of the conjugate fiber is not particularly limited as long as it is dividable, and it is preferable to select any one of the melt split type conjugate fiber, split split type conjugate fiber, and split split type conjugate fiber.
Hereinafter, these composite fibers will be described.

As a preferred example of the melt-split type composite fiber,
Sea-island type composite fiber shown in Fig. (A) (a island component, b sea component)
By dissolving and removing the sea component in the post-processing stage, the island component can be made into an ultrafine yarn. In other words, the cross-sectional shape of the fiber axis is such that the hardly soluble polymer that is hardly dissolved in a solvent (including an aqueous alkali solution) is dispersed in an easily dissolvable polymer in an island shape (substantially continuous in the fiber axis direction). It has a form. As described above, the combination of the polymers constituting the sea-island composite fiber may be any combination as long as the sea component and the island component have different solubilities in a certain solvent and the island component can be divided into ultrafine yarns. Above all, from the viewpoint of the texture and handleability of the obtained woven or knitted fabric, the island component is preferably a polyethylene terephthalate-based polyester in which ethylene terephthalate is 95 mol% or more, and the sea component is 5-sodium sulfoisophthalic acid, isophthalic acid, polyethylene. Glycol, diethylene glycol,
Adipic acid, cyclohexane dimethanol, tetramethylene glycol, etc., a polyethylene terephthalate-based polyester copolymerized in a ratio that makes it more soluble than the polyethylene terephthalate-based polyester, or
A polyester composition which is easily soluble by mixing a polymer such as polyethylene glycol, a polyether ester comprising a dicarboxylic acid component and a polyoxyalkylene glycol component with a polyester such as polyethylene terephthalate is preferred. In addition, other than the sea-island type, the radial split type shown in FIG. 1 (B), the random type shown in FIG. 1 (C), the harmonica type shown in FIG. However, the present invention is not limited to these shapes.

FIG. 1 (E) (c)
And d are heterogeneous island components and do not include sea components), and the heterogeneous polymers are in a bonded state, and the bonded portion is separated by the heat history of the dyeing process. As an example of the polymer, a combination of polyethylene terephthalate and polyamide is suitable, but other types of polymer may be used.

FIG. 1 (F) (e and f are different island components, and g is a sea component) shown in FIG. 1 (F) is selected as an example of the dissolving split type composite fiber. The conjugate fiber can be made into an ultrafine yarn by dissolving and removing the sea component in the post-processing stage, like the melt-split conjugate fiber.

The multifilament A uses these composite fibers as its filament, and has a single fineness of 0.02 to
It must be dividable into ultrafine threads of 0.9 dtex. When it is less than 0.02 decitex, although the softness and the slickness of the fabric are improved, the fiber entanglement due to the ultrafine yarn located on the surface layer of the fabric becomes remarkable, and a uniform surface appearance cannot be obtained. On the other hand, 0.9
If it exceeds the decitex, the soft feeling is reduced and a suede-like touch cannot be obtained. As a range satisfying both characteristics of fiber entanglement and soft feeling, a range of 0.04 to 0.1 decitex is preferable.

Next, the multifilament A has a thermal stress of 0.1 cN / dtex or less, preferably 0.08 cN / dtex.
/ Dtex or less. Thermal stress is 0.1cN
If it is higher than / dtex, the mixed fiber receives the heat history of the dyeing process, and when forming the core-sheath type two-layer structure yarn, it becomes difficult to form the core-sheath type two-layer structure yarn, and irregularities appear on the surface of the fabric. , The slimy feeling is greatly reduced.

The multifilament A has an elongation of 70.
１８０180%, preferably 80-150%. If the elongation is less than 70%, a strong slimy feeling, which is the main object of the present invention, cannot be obtained, and the soft feeling is undesirably reduced. On the other hand, when it exceeds 180%, the fiber entanglement due to the ultrafine yarn located on the surface layer of the fabric becomes remarkable, and not only a uniform surface appearance cannot be obtained, but also snagging easily occurs due to external factors, which is preferable. Absent.

Next, the other multifilament B constituting the mixed fiber of the present invention must have a single fineness of 2 to 10 dtex, preferably 2.5 to 8.5 dtex. If the single fineness is less than 2 dtex, the entanglement between the fibers due to blending becomes too strong, so that the openness of the ultrafine yarn formed by treating the conjugate fiber is reduced, and a uniform surface appearance is exhibited. Cloth cannot be obtained. On the other hand, when it exceeds 10 decitex, the fiber mixing property with the multifilament A is reduced and the fiber mixing becomes poor, so that it is impossible to obtain a fabric having a uniform surface appearance.

The thermal stress of the multifilament B is 0.2 cN / dtex or more, preferably 0.3 to 0.6.
It must be in the range of cN / dtex. Thermal stress is 0.
If it is less than 2 cN / dtex, it is difficult to form the core-sheath type two-layer structure yarn when forming the core-sheath type two-layer structure yarn due to the heat history of the dyeing step, which is not preferable.

Next, the boiling water shrinkage of the multifilament B is 40% or less, preferably 8 to 30%, and
It needs to be higher than the boiling water shrinkage of the multifilament A by 2% or more, preferably 3% or more. If the boiling water shrinkage of the multifilament B is higher than 40%, the shrinkage is too large, and irregularities are generated on the surface layer of the fabric, and the slimy feeling is greatly reduced, which is not preferable. When the difference between the boiling water shrinkage of the multifilament B and the boiling water shrinkage of the multifilament A is less than 2%, or
When the boiling water shrinkage is lower than the boiling water shrinkage of the multifilament A, it is difficult to form a core-sheath type two-layer structure yarn even if the difference in thermal stress is sufficient, which is not preferable.

The polymer constituting the multifilament B is not particularly limited as long as it satisfies the above-mentioned ranges of thermal stress and boiling water shrinkage. Polyethylene terephthalate obtained by copolymerizing the components is preferred. Of course, it is needless to say that the polyester needs to be less soluble than the polyester preferably used for the sea component of the sea-island composite fiber. Preferred examples of the third component include isophthalic acid, bisphenol A and its ethylene oxide adduct, neopentyl glycol, and the like. The copolymerization amount is usually 2 mol% in order to exhibit high shrinkage characteristics.
The upper limit is usually 20 mol% or less from the viewpoint of the texture and mechanical properties of the obtained fabric.

The multifilament yarn of the present invention is a multifilament yarn obtained by mixing the multifilament A and the multifilament B, and is 300 T / m or more, and more preferably 500 to 20 T / m.
It is preferable that the yarn is twisted at a twist number of 00 T / m. 3
If the yarn is twisted with a twist number of 00 T / m or more, the multifilament yarn receives a heat history in the dyeing process, and a multifilament B having a high boiling water shrinkage ratio is provided in a core portion, and a multifilament A having a low boiling water shrinkage ratio is formed. When moving to the sheath, smooth movement is possible, which is preferable. When the number of twists is 3000 T / m or more, the problem that the texture of the fabric becomes hard tends to occur.

Next, a preferred method for producing the above-described mixed fiber yarn will be described.

First, as the multifilament A, the elongation is 120 to 200%, preferably 130 to 180%, and the filament has a fineness of 0.02 to 0.9 dtex, preferably 0.04 to 0.5 dtex. Use a composite undrawn yarn that can be divided into

If the unstretched yarn has an elongation of less than 120%, it is not preferable because the strong object of the present invention, ie, a strong slimy feeling and a soft feeling, are not obtained.
On the other hand, when it exceeds 200%, fiber entanglement due to the ultrafine yarn located in the surface layer of the fabric becomes remarkable, and not only does not obtain a uniform surface appearance but also snagging easily occurs due to external factors, which is preferable. Absent.

Next, as the multifilament B, a multifilament having a single yarn fineness of 2 to 10 decitex manufactured by a conventional method is used, and the relaxation ratio of the multifilament A and the multifilament B is 3% or less, preferably Is mixed at 0.5 to 2%. When the relaxation rate is higher than 3%, not only the multifilament A but also the multifilament B loops (schematically indicated by 9-1 in FIG. 4).
Becomes prominent, and a loop-out (schematically indicated by 9-2 in FIG. 4) often increases, and not only the slimy feeling of the fabric is reduced, but also the unevenness is formed on the surface of the fabric, so that the uniformity is improved. And the quality is poor. In addition,
As the fiber mixing method, a conventionally known method may be adopted, and for example, it is generally preferable to use an interlace nozzle.

Subsequently, the mixed fiber is heated to a temperature of 80 to 130.
° C, preferably 0.001-0.009 seconds, preferably 0.002-0.009 seconds on a roller heated to 90-125 ° C.
By contacting for 0.006 seconds, the thermal stress of the multifilament A is 0.1 cN / dtex or less and the elongation is 7
0 to 180%, the thermal stress of the multifilament B is 0.2 cN / dtex or more, the boiling water shrinkage is 40% or less, and the boiling water shrinkage of the multifilament B is 2 times smaller than the boiling water shrinkage of the multifilament A. % And higher. Here, when the temperature of the heated roller is lower than 80 ° C., or when the contact time with the heated roller is shorter than 0.001 second, the shrinkage of the loop of the mixed fiber is insufficient. Even if a twist is applied to the mixed fiber, a loop remains, and irregularities are formed on the surface of the fabric, which is not preferable. Conversely, if the temperature of the heated roller is higher than 130 ° C., or if the contact time with the heated roller is longer than 0.009 seconds, the strength of the high elongation multifilament A deteriorates, Not preferred.

Further, the mixed fiber is subjected to a heat treatment by a heated roller, and then reheated by a non-contact type heater heated to 160 ° C. to 240 ° C. for 0.0003 to 0.004 seconds. It is preferable to further shrink the loop of the mixed fiber. The form of the mixed fiber after reheating is schematically shown in FIG. In addition, the reheating treatment may be performed using a contact heating heater. However, in the contact heating, the loop is lifted from the heating heater, and the raised loop does not receive heat. In some cases, it is preferable to use a non-contact type heater because it may remain.

Hereinafter, a more specific description will be given with reference to the drawings. FIG. 2 is a schematic view of a production process of the mixed fiber of the present invention. In the figure, an undrawn multifilament A (1), whose filament is a conjugate fiber, is placed on a krill stand in the manufacturing process, while a multifilament B (2) is placed on another krill stand. Multifilament A
And the multifilament B are aligned and passed through a cot roller (3), and both yarns are mixed with an interlace nozzle (4) using compressed air. Further, after a few turns after being guided to a heated supply roller, it passes through a reheating zone (6), and is wound several times around a take-up roller (7) to be wound as a mixed fiber (8).

Next, another preferred method for producing the mixed fiber of the present invention will be described.

First, as the multifilament A, the elongation is 120 to 200%, preferably 130 to 180%, and the filament has a fineness of 0.02 to 0.9 dtex, preferably 0.04 to 0.5 dtex. Use a composite undrawn yarn that can be divided into

Here, when the elongation of the undrawn yarn is less than 120%, it is not preferable because a strong slimy feeling, which is the main object of the present invention, cannot be obtained and a soft feeling is reduced.
On the other hand, when it exceeds 200%, fiber entanglement due to the ultrafine yarn located in the surface layer of the fabric becomes remarkable, and not only does not obtain a uniform surface appearance but also snagging easily occurs due to external factors, which is preferable. Absent.

In the present invention, the undrawn multifilament A is 0.9 to 1.3 times, preferably 1.0 to 1.3 times.
Heat-stretched to 1.2 times and heat stress 0.1cN / dte
x or less, forming a composite yarn having an elongation of 70 to 180%. here,
As the heater used for the stretching heat treatment, 120 to 24
A contact-type heating plate heater heated to 0 ° C., or
It is preferable to use a non-contact type heater heated to 200 to 400 ° C. In the case of a contact-type heating plate heater of less than 120 ° C. or a non-contact type heating heater of less than 200 ° C., it takes a long time to obtain predetermined physical properties, and the production cost tends to increase. Conversely, a contact heating plate heater heated above 240 ° C. or 400
The use of a non-contact type heater heated to a temperature higher than 0 ° C. is not preferable because the production speed can be improved, but fluff and breakage tend to occur and the yarn strength tends to decrease. The time of the heat treatment is 0.0003 to 0.00.
Preferably it is in the range of 4 seconds. Further, in the heat treatment, the multifilament A is stretched 0.9 to 1.3 times, and the stretching of 0.9 times means that the relaxation rate is 10%.
Means that the stretching is lower than 0.9 times, that is, 10
%, It is not preferable because, after the heat treatment, non-uniform heat treatment sites are mixed and the yarn strength is reduced. Conversely, if the stretching is higher than 1.3 times, irregular heat spots and irregular shape irregularities occur in the fiber axis direction after the heat treatment, which is not preferable.

After the heat treatment, the multifilament A is
A multifilament having a single-fiber fineness of 2 to 10 dtex, a thermal stress of 0.2 cN / dtex or more, a boiling water shrinkage of 40% or less, and a boiling water shrinkage of 2% or more of the multifilament A manufactured by a conventional method. The filament B is mixed. As the fiber mixing method, a conventionally known method may be adopted, and for example, it is generally preferable to use an interlace nozzle.

Hereinafter, the second manufacturing method will be described more specifically with reference to the drawings. FIG. 3 is a schematic diagram showing the steps of the manufacturing method. In the figure, an undrawn multifilament A (1-1), whose filament is a conjugate fiber, is placed on a krill stand in the manufacturing process, while a multifilament B (2-1) is placed on another krill stand. After passing the multifilament A (1-1) through the cott roller (3-1), the multi-filament A (1-1) is caused to make several turns on the supply roller (5-1). During this time, the yarn tension is set so as not to be stretched. Then, the heater (6-
After heating in 1), it is guided to the large-diameter roller of the stepped roller (7-1). At this time, it is stretched between the large-diameter roller and the supply roller (5-1). Thereafter, the multifilament A passes through the interlace nozzle (4-1),
The multifilament B (2-1) is guided to the small-diameter roller of the stepped roller (7-1). 1-1) and are guided to the interlace nozzle (4-1). Thereafter, both yarns are mixed by the interlace nozzle (4-1), and several turns are made on the small-diameter roller to be wound as a mixed yarn (8-1).

The mixed yarn obtained by the above-mentioned production method is usually
After being twisted in the twisting step, it is knitted and woven and supplied to a dyeing step. In the dyeing process, the multifilament A constituting the mixed yarn is made extremely thin by the weight reduction process, and at the same time, due to the heat history of the dyeing process, the multifilament A has a large boiling water shrinkage ratio. Is a core-sheath type two-layer structure yarn in which a multifilament A having a small boiling water shrinkage ratio is located in a sheath portion. More specifically, the sheath portion is composed of an ultrafine multifilament having a single yarn fineness of 0.02 to 0.9 decitex and a single yarn elongation of 70 to 180%, while the core portion has a single yarn fineness of 2 to 10 decitex. A core-sheath type two-layer structure yarn composed of filaments and suitable for a suede-like fabric is formed.

Therefore, the woven or knitted fabric containing at least a part of the core-sheath type two-layer structure yarn is a suede-like fabric having ultra-fine fibers with high elongation on the surface. In addition, the structure, the basis weight,
The density is not particularly limited, but it is preferable to perform buffing as an additional processing in order to obtain a softer texture.

[0034]

The present invention will now be described in more detail with reference to Examples and Comparative Examples, which by no means limit the present invention.
In addition, each measurement item in an Example was measured by the following method.

Elongation According to JIS-L1013-8.5 (8.5.1). The elongation is measured by elongation at break (%).

Boiling water shrinkage The sample was made into 10 knives using a scale measuring machine with a frame circumference of 1.125 m, and was subjected to 0.0177 cN / dtex (0.02 g /
de) Apply a load to the scalpel to measure the scab length L ₀ , then remove the load, immerse in warm water of 98 ° C. for 30 minutes, take out, remove the moisture with Japanese paper, dry naturally in a horizontal state, and re-apply the initial load the measure the hank length L ₁ over was calculated boiling water shrinkage rate (%) by the following equation. Boiling water shrinkage (%) = ((L ₀ −L ₁ ) / L ₀ ) × 100

The measurement is performed using a thermal stress type KE-2S (manufactured by Kanebo Engineering). The sample is 5cm long with a mounting jig
Make 3 pieces of skein, leave it for 24 hours and put it on the device. Hook the upper hook and lower hook, and the initial load is 0.029cN
3 in 120 seconds under / dtex (0.033 g / de)
The temperature is set to rise to 00 ° C., and the relationship between the temperature and the heat shrink force is printed out. This measurement was performed three times and 160
The thermal shrinkage force (cN) at ° C was read, the average was calculated, and the result was divided by the decitex of the scalpel to obtain the thermal stress (cN / dte).
x).

Example 1 Polyethylene terephthalate (intrinsic viscosity: 0.63) added with 0.3 wt% of titanium oxide as an island component of a conjugate fiber, and 5 as an easily soluble sea component
A polyethylene terephthalate (intrinsic viscosity of 0.1 mol%) obtained by copolymerizing 1.5 mol% of sodium sulfoisophthalic acid and 1.5 wt% of polyethylene glycol (molecular weight: 4000);
63) to polyethylene glycol molecular weight 20,000
4% by weight of water-soluble polyetherester (polymer of phthalic acid / polyethylene glycol (molecular weight: 20,000), molecular weight: 150,000) is blended with 4% by weight, and the island component and the sea component are simultaneously spun from a normal composite spinneret. Thus, a sea-island composite undrawn yarn (multifilament A) having a cross-sectional shape shown in FIG. 1A was obtained. The spinning temperature at that time is 290
° C, the spinning speed is 3000 m / min, the total fineness is 133 decitex, the number of filaments is 36, the number of islands in one filament is 25, the weight ratio of the island component is 65% (the single fineness of the island component is 0.096 decitex), A composite undrawn yarn having a sea component of 35%, an elongation of 160%, and a natural draw ratio of 1.6 was obtained. As another multifilament B, an undrawn yarn obtained by spinning polyethylene terephthalate obtained by copolymerizing 10% by mole of isophthalic acid at a spinning temperature of 280 ° C. and a spinning speed of 1450 m / min. It was wound three times at a temperature of 120 ° C. and stretched three times to obtain a high shrinkage yarn having a boiling water shrinkage of 15% and 55 dtex / 12 filaments.

Both yarns are subjected to the manufacturing process shown in FIG.
Aligned with a cot roller. Then the cott roller and 1
Between the heating roller heated to 20 ° C., a relaxation rate of 1.5% and a compressed air pressure of 294 using an interlace nozzle.
The fibers are mixed under the conditions of kPa (3 kg / cm ² ), and a non-contact heater (slit type, heater length 30 cm, slit width 2 mm) is used between the heating roller and the take-off roller (600 m / min). And the relaxation rate is 2%,
A mixed fiber of 190 dtex / 48 filaments (175 de / 48 filaments) was obtained at a temperature of 200 ° C.
When the multifilament A was taken out from the mixed fiber and examined for physical properties, the shrinkage ratio of boiling water was 4% and the thermal stress was 0.05 cN /
dtex and elongation were 120%. On the other hand, taking out the multifilament B from the mixed fiber and examining the physical properties, the boiling water shrinkage was 10%, and the thermal stress was 0.5 cN / dtex. The mixed fiber is passed through a twisting machine, and 800T
/ M S twist, and 1000 T / m SZ twist for the weft similarly, and woven with a twill change structure. The obtained greige is 100
After refining with warm water at ℃, neutralized and dry set at 180 ° C. for 30 seconds at a relaxation rate of 1% in the longitudinal direction and 5% in the weft (width) direction using a pin tenter device as a preset. Next, the sea component was dissolved by 30% weight reduction with a 35 g / liter sodium hydroxide aqueous solution at 90 ° C. to dissolve the sea component, and the island component was divided into ultrafine yarns.
Min) and stained in dark blue. The shrinkage ratio of the woven fabric before and after dyeing is 3% in the warp direction and 5% in the weft (width) direction, and this shrinkage is due to the shrinkage ratio of the multifilament B. The multifilament B is located inside the woven fabric, It was difficult to observe the multifilament B from the surface. Thereafter, the fabric was air-dried and heat-set at 160 ° C. for 1 minute as a final set to finish the fabric. 250g fabric weight
/ M ² , the finished weave density is 260 warps / 25.4 mm
(Inch), 170 wefts / 25.4 mm (inch). The fabric was finished in a high-quality suede-like fabric having not only excellent softness but also strong sliminess. The elongation was measured and the elongation was measured to be 110%. As an additional process, the woven fabric is buffed (winding a sandpaper of No. 400 around a rotating shaft, and cutting the fiber to make fluff while moving the woven fabric surface so as to make slight contact on the surface). Finished with a soft texture.

Example 2 The sea-island composite undrawn yarn (multifilament A) used in Example 1 was subjected to the manufacturing process shown in FIG. 3, and the drawing conditions were as follows: between the supply roller and the stepped roller. Was subjected to a stretching heat treatment at a stretching magnification of 1.1 times, a contact-type heating plate heater (heater length: 36 cm) at a temperature of 160 ° C. and a stretching speed of 600 m / min. On the other hand, the same high shrinkage yarn as used in Example 1 was used as the multifilament B, and both yarns were aligned on the long diameter roller of the stepped roller, and the relaxation rate was 1.0% using the interlace nozzle in the same process.
Compressed under the condition of compressed air pressure of 147 kPa (1.5 kg / cm ² ), 179 dtex / 48 filament (16
2de / 48 filaments) was obtained. When the multifilament A was taken out from the mixed fiber and the physical properties were examined, the shrinkage ratio of boiling water was 1%, and the thermal stress was 0.02 cN / dte.
x, elongation was 110%. On the other hand, taking out the multifilament B from the mixed fiber and examining the physical properties, the boiling water shrinkage was 18% and the thermal stress was 0.6 cN / dtex. The mixed fiber is passed through a twisting machine, and 800 T / m for warp.
S twist, and 1000 T / m SZ twist for the weft similarly, and weaving with a twill change structure. The obtained greige was refined with hot water of 100 ° C., neutralized, and 1% in the longitudinal direction and 5% in the weft (width) direction using a pin tenter device as a preset.
% And a dry heat setting at 180 ° C. for 30 seconds. Next, the sea component was dissolved by 30% weight reduction with a 35 g / liter sodium hydroxide aqueous solution at 90 ° C. to dissolve the sea component, and the island component was divided into ultrafine yarns.
Min) and stained in dark blue. The shrinkage ratio of the woven fabric before and after dyeing is 3% in the warp direction and 5% in the weft (width) direction, and this shrinkage is due to the shrinkage ratio of the multifilament B. The multifilament B is located inside the woven fabric, It was difficult to observe the multifilament B from the surface. Thereafter, the fabric was air-dried, and the final set was dry-heat set at 160 ° C. for 1 minute to finish the fabric. Fabric weight is 265 g / m
^2. Finished weave density: 270 warps / 25.4mm, weft 1
74 pieces / 25.4 mm. The fabric was finished in a high-quality suede-like fabric having not only excellent softness but also strong sliminess. The extra-fine yarn was taken out and the elongation was measured to be 80%. As an additional process, the woven fabric is buffed (winding a sandpaper of No. 400 around a rotating shaft, and cutting the fiber to make fluff while moving the woven fabric surface so as to make slight contact on the surface). Finished with a soft texture.

[Comparative Example 1] As a sea-island composite undrawn yarn,
With the same spinning method as in Example 1, a total fineness of 242 dtex,
36 filaments, 2 islands per filament
5. The weight ratio of the island component is 65% (the single fineness of the island component is 0.1%).
175 decitex), a composite undrawn yarn having a sea component of 35% and an elongation of 160% was obtained. This composite unstretched yarn was stretched by 1.81 times using a usual stretching machine, and was 134 dtex, 36 filaments, elongation 30%, boiling water shrinkage ratio 4
5%. As the other multifilament B, the same high shrinkage yarn as in Example 1 was used.

Both yarns were 193 dte in the same process as in Example 1.
The mixed yarn of x / 48 filament (175 de / 48 filament) was formed. The sea-island composite yarn was taken out from the mixed yarn, and the physical properties were as follows: the boiling water shrinkage was 3%, the thermal stress was 0.07 cN / dtex, and the elongation was 32%. On the other hand, when the multifilament B was taken out from the mixed yarn and the physical properties were examined, the shrinkage ratio of boiling water was 10%, and the thermal stress was 0.5 c.
N / dtex. The mixed fiber was passed through a twisting machine, and S twisted at 800 T / m for warp, and 1000 twist for weft.
T / m SZ twist was applied and woven with a twill change structure. The obtained greige is refined with hot water at 100 ° C., neutralized, and then pre-set in a longitudinal direction using a pin tenter device.
%, And a dry heat setting at 180 ° C. for 30 seconds at a relaxation rate of 5% in the weft (width) direction. Next, the sea component is dissolved by 30% weight reduction with a 35 g / liter aqueous sodium hydroxide solution at 90 ° C. to dissolve the sea component, and the island component is divided into ultrafine yarns. Stained. The shrinkage ratio of the woven fabric before and after dyeing is 2% in the warp direction and 4% in the weft (width) direction. This shrinkage is due to the shrinkage ratio of the multifilament B. The multifilament B is located inside the woven fabric. It was difficult to observe the multifilament B from the surface. Thereafter, the fabric was air-dried and heat-set at 160 ° C. for 1 minute as a final set to finish the fabric. The fabric weight is 255 g / m ² and the finished weave density is 262
Book / 25.4 mm, and weft 173 book / 25.4 mm. The woven fabric did not have a slimy feel and became a conventional suede-like woven fabric. In addition, when the said ultrafine thread was taken out and the elongation was measured, it was 35%. As an additional process, the slickness can also be obtained by buffing the woven fabric (winding a # 400 sandpaper around a rotating shaft and cutting the fiber while moving the woven fabric surface so as to make slight contact on the surface). Could not be obtained.

[0043]

According to the blended yarn of the present invention, it is possible to provide a high-quality suede-like fabric which is not only excellent in softness but also has a strong slimy feeling, which is a new texture that has escaped from the conventional crisp touch.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a conjugate fiber according to the present invention.

FIG. 2 is a schematic view showing a process for producing the mixed fiber of the present invention.

FIG. 3 is a schematic view showing another process for producing the mixed fiber of the present invention.

FIG. 4A is a schematic view showing a form of a loop of a mixed fiber. (B) It is a schematic diagram which shows the form of the jumping loop of the mixed fiber.

FIG. 5 is a schematic view showing a form of a mixed fiber after the loop is contracted by heat treatment.

[Explanation of symbols]

 a, c, d, e, f Insoluble component b, g Easily soluble component 1,1-1 Composite undrawn yarn (multifilament A) 2,2-1 High shrinkage yarn (multifilament B) 3,3 -1 Cot roller 4, 4-1 Interlace nozzle 5 Heating roller 5-1 Supply roller 6, 6-1 Heater 7 Take-up roller 7-1 Stepped roller 8, 8-1 Mixed fiber 9-1 Loop 9-2 Pop out loop

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D04B 21/00 D04B 21/00 B (72) Inventor Tomio Mizumura 77 Kitayoshida-cho, Matsuyama-shi, Ehime Teijin Shares F-term in the Matsuyama Office of the Company (reference) 4L002 AA07 AB04 AC07 DA04 DA05 EA00 FA02 4L036 MA05 MA15 MA16 MA25 MA33 MA39 PA03 PA18 PA21 PA33 PA46 RA03 UA01 4L048 AA21 AA28 AA29 AA34 AB09 BA01 BA02 CA18 DA01 EB04

Claims (10)

[Claims] 1. A multifilament yarn obtained by mixing a multifilament A and a multifilament B, which are splittable conjugate fibers, wherein the multifilament A has a fineness of 0.02 to 0.9 decitex. The multifilament B has a single yarn fineness of 2 to 10 decitex and a thermal stress of 0.2 cN / dtex or more, and has a thermal stress of 0.1 cN / dtex or less and an elongation of 70 to 180%. A multifilament yarn having a boiling water shrinkage of 40% or less and a multifilament B having a boiling water shrinkage of 2% or more higher than that of the multifilament A. 2. The mixed fiber according to claim 1, which is twisted with a twist number of 300 T / m or more. 3. The mixed fiber according to claim 1, wherein the polymer constituting the mixed fiber is polyester. 4. An undrawn multifilament A, which is a conjugate fiber having an elongation of 120 to 200% and a filament capable of being divided into finenesses of 0.02 to 0.9 dtex.
And a multifilament B having a single yarn fineness of 2 to 10 decitex, and after performing a fiber mixing process at a relaxation rate of 3% or less, a roller heated to 80 to 130 ° C.
By contacting for 1 to 0.009 seconds, the thermal stress of the multifilament A is made 0.1 cN / dtex or less, the elongation is made 70 to 180%, and the thermal stress of the multifilament B is made 0.2 cN / dtex or more. A method for producing a mixed fiber, wherein the boiling water shrinkage is 40% or less and the boiling water shrinkage of the multifilament B is 2% or more higher than the boiling water shrinkage of the multifilament A. 5. After performing heat treatment with a heated roller,
The method for producing a mixed fiber according to claim 4, wherein the non-contact type heater heated to 160 ° C. to 240 ° C. is reheated for 0.0003 to 0.004 seconds. 6. An undrawn multifilament A, which is a conjugate fiber having an elongation of 120 to 200% and a filament capable of being divided into finenesses of 0.02 to 0.9 dtex, having a draw ratio of 0.9 to 1. The thermal stress of the multifilament A is reduced to 0.1 cN / dte by stretching heat treatment in a range of 3 times.
x or less, elongation is set to 70 to 180%, then single yarn fineness is 2 to 10 dtex, and thermal stress is 0.2 cN / dt.
ex and a multifilament B having a boiling water shrinkage ratio of 40% or less and a multifilament A having a boiling water shrinkage ratio of 2% or more higher than the multifilament A shrinkage ratio. 7. The method for producing a mixed fiber according to claim 6, wherein, when the multifilament A is subjected to the drawing heat treatment, a contact-type heating plate heater heated to 120 to 240 ° C. is used. 8. The method for producing a mixed fiber according to claim 6, wherein a non-contact type heater heated to 200 to 400 ° C. is used when the multifilament A is subjected to the drawing heat treatment. 9. The sheath portion is composed of an ultrafine multifilament having a single yarn fineness of 0.02 to 0.9 decitex and a single yarn elongation of 70 to 180%, while the core portion has a single yarn fineness of 2 to 10 decitex. A core-sheath type two-layer yarn composed of multifilaments. 10. A woven or knitted fabric containing at least a part of the core-sheath type two-layer structure yarn.