JPH09170129A - Bulky woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a bulky woven fabric holding gathered states each comprising plural fine fibers and having loops on the surface of each yarn, excellent in surface luster, appearance, water pressure resistance and moisture permeability, and useful for cold climate clothes, etc. SOLUTION: Opened and closed loops are projected on all or a part of yarns composing a woven fabric, and comprise fine fibers having a single filament fineness of <=0.4 d. Plural fibers among the fine fibers hold the gathered states and form the loops. Each yarn is preferably produced by subjecting a thermal shrinkage treatment and a splitting treatment for dividing the fibers into the fine fibers to a composite yarn 10 wherein multifilaments (preferably having a single fineness of 1-15d) comprising highly shrinkable filaments are disposed relatively on the side of the core 2 and splittable conjugated multifliaments having a low shrinkage degree are disposed relatively on the side of the sheath 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density and soft bulky fabric using multifilament bulky yarns.

[0002]

2. Description of the Related Art It is known that a multifilament yarn is guided to a fluid turbulent region while running to form a protruding bulky yarn by mixing open loops and closed loops on the surface of the yarn. The bulky yarn obtained by this means has a feeling and bulkiness similar to a spun yarn, and has a uniform thickness not found in a spun yarn.

In the field of winter clothing such as ski wear and mountain climbing wear, high-density cotton high-density count fabrics have been used. However, since high-quality cotton yarns are used for warp and weft in high density weaving compared to other woven fabrics, there are many warp breaks and weaving efficiency decreases, resulting in extremely high cost. There was a drawback that the spread of

Therefore, a synthetic fiber multifilament yarn, which has a thread thickness comparable to that of high-grade cotton, can be arbitrarily changed in thickness, and has high strength, has a feeling of spun yarn and a high bulkiness. The development of density fabric was carried out,
In the early days, we were not satisfied.

Synthetic fiber multifilament yarn is a yarn having an extremely uniform thickness as compared with spun yarn, but has the drawback of lacking in bulkiness. Therefore, various techniques for increasing the bulk without impairing the uniform thickness of the synthetic fiber multifilament yarn have been proposed. Examples of these means include false twist crimping, shaped crimping, scraping crimping, and fluid bulking. Among them, the bulky yarn obtained by the fluid bulking process is different from the yarns obtained by the other means described above in that it has the characteristic of being non-stretchable and non-wrinkling. When used, it is superior in morphological stability to other crimped yarns.

Therefore, the woven fabric woven using this yarn has a uniform appearance without yarn unevenness like spun yarn and is excellent in bulkiness. However, since the yarn obtained by the fluid bulk processing has a form in which fine open loops and closed loops are mixed and projected on the surface, it is excellent in bulkiness, but the high-order processing passability is very good. Absent. Especially when it is used as a woven fabric, when it is used as a warp yarn, the fine protrusions on the yarn surface as described above cause poor threadability of the heddle and rattan and cause yarn breakage. As a result, the woven fabrics are entangled with each other to cause poor opening, and the weaving efficiency is remarkably reduced. As a result, there is a fatal defect that it cannot be used for warp yarns of high-density fabrics.

Further, in a certain field, there is a demand for a high-quality product having a soft and supple bulkiness which is a characteristic of an original high-density bulky fabric using fine counts of cotton, or a natural surface gloss and appearance. It became so. As an attempt to satisfy such requirements, in producing a bulky yarn obtained by fluid turbulent flow treatment, a split-fiber type composite fiber composed of a polyamide fiber component and a polyester fiber component is used as a yarn constituting the bulky yarn. Japanese Patent Laid-Open No. 61-6348 attempts to impart soft and supple bulkiness to a woven fabric by dividing it into fine fibers after weaving.
However, the technique disclosed in Japanese Patent Laid-Open No. 61-6348 is a bulky yarn obtained by subjecting a split / split type composite fiber multifilament yarn obtained by combining a polyamide fiber component and a polyester fiber component to a fluid turbulent flow treatment. Is made by knitting and weaving into a fabric, and the fabric is divided and divided by a chemical agent to form rings and tarumi consisting of a polyester component of 0.4 denier or less. Technology for high density Did not disclose anything.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to remedy the above-mentioned deficiencies of the prior art, and to obtain a soft and supple bulkiness and unique surface gloss of high-density fabric obtained by using high-grade cotton counts. And a novel bulky fabric that is superior in appearance.

[0009]

SUMMARY OF THE INVENTION The present invention is intended to achieve the above object and has the following structure. That is, in the bulky woven fabric of the present invention, open loops and closed loops are mixedly projected on the surface of all or part of the yarns constituting the woven fabric, and the open loop and closed loop have a single fiber fineness of 0. .4d or less, wherein a plurality of these fine fibers form the loop while maintaining the aggregated state, and
The yarn is a composite yarn in which a multifilament yarn composed of highly shrinkable fibers is located relatively on the core side, and a dividable type composite fiber multifilament yarn having a relatively low shrinkage ratio is located on the sheath side. It is preferable that the yarn is subjected to the shrinking treatment and the treatment for dividing it into fine fibers, and further, the monofilament fineness of the multifilament yarn located relatively on the core side is preferably 1 to 15 denier. .

The bulky woven fabric of the present invention has a synthetic fiber multi-fifty yarn composed of highly shrinkable fibers and a splittable type composite fiber multi-filament yarn having a low shrinkage ratio in the fluid turbulent flow region with different overfeed ratios. The multifilament composite yarn of the aspect in which the former multifilament yarn is located relatively on the core side and the latter multifilament yarn is located relatively on the sheath side, and open loops and closed loops are mixed and projected on the yarn surface. The multi-filament composite yarn is woven using the warp yarn and / or the weft yarn, and then the resulting woven fabric is contracted in the longitudinal direction of the multi-filament composite yarn, and then the dividable composite fiber is obtained. It can be advantageously obtained by dividing it into fine fibers.

Further, in the multifilament composite yarn used in the present invention, the individual difilaments constituting the dividable composite fiber multifilament yarn form loops while the divisible composite fiber multifilament is formed. Entangled mixed multifilament yarn that is entangled and mixed with other individual monofilaments that make up the yarn and that is also entangled with the individual monofilaments that make up the multifilament yarn that is located relatively on the core side. It is preferable that the entangled mixed yarn obtained by passing through the fluid turbulent region is tensioned at a constant underfeed rate and then woven.

[0012]

The present invention will be further described in detail.

The entangled mixed-fiber multifilament composite yarn which is preferably used in the production of the bulky fabric of the present invention is a core-sheath type composite yarn, in which a high shrinkage multifilament yarn is used as the core yarn and a comparison is made for the sheath yarn. A bifilament multifilament yarn that can be split with a relatively low shrinkage ratio is used, and the two multifilament yarns are obtained by passing through a fluid turbulent region with different overfeed ratios.

The characteristic of this entangled mixed fiber multifilament composite yarn is that the functions of the core yarn and the sheath yarn are separated. That is, the core yarn is composed of fibers having a high shrinkage ratio, and after the composite yarn is made into a woven fabric, the core yarn is shrunk by heat treatment to make the woven fabric highly dense and to increase the bulkiness of the composite yarn. Therefore, it exhibits an excellent function of increasing the bulkiness of the woven fabric. On the other hand, since the sheath yarn is composed of low-shrinkage and splittable composite fibers, the shrinkage ratio of the sheath yarn is lower than that of the core yarn when the composite yarn is made into a woven fabric and then heat-treated. The difference in shrinkage rate from the core yarn projects to the surface, further increasing the bulkiness. Further, since the sheath yarn is a dividable type composite fiber, the shrinkage-treated woven fabric is subjected to a splitting treatment to divide the sheath yarn into fine fibers, so that the sheath yarn present on the surface and inside of the woven fabric is opened. The characteristic feature is that the monofilaments forming loops and closed loops are separated into fine fibers, and the texture of the fabric can be made extremely soft. Usually, a bulky yarn obtained by passing through a fluid turbulent region under overfeed has a function in which an open loop and a closed loop are mixed and protruded on the surface of the yarn. Almost fixed by entangled mixed fibers. Therefore, the thread body is bulky, and when these threads are aligned in parallel and close to each other, they exhibit a fastener effect due to the loops protruding on the surface of each other, which makes them difficult to stick to each other and become difficult to separate. Since it exhibits the same phenomenon as that of entangled yarn, it has not been used as a warp or tricot for woven fabrics, though it has a special property of being non-stretchable and bulky.

However, in the case of the entangled mixed fiber multifilament composite yarn preferably used in the present invention, the above-mentioned defects are caused by the passage of the fluid turbulent flow region by performing the following bulkiness latentizing treatment. It is possible to eliminate the coarse one of the open loop and the closed loop, and eliminate the troubles between the adjacent yarns due to the fastener effect, entanglement, entanglement, etc. as described above.

The bulkiness latentizing treatment is the following treatment. That is, as described above, the coarse one forms an open loop, and it seems that a part of the single fiber constituting the composite yarn is slack. Therefore, if the yarn is pulled by the amount corresponding to the slack, the coarse loop is absorbed by the yarn and disappears. This is achieved, for example, by tensioning continuously under the underfeed on the production equipment. In the present invention, this tensioning treatment is referred to as a bulky latent treatment. In this way, even if the bulky latentizing treatment is performed, the entangled mixed fibers of the single fibers constituting the entangled mixed fiber multifilament composite fiber are maintained as they are, and the bundle of the composite yarn is maintained. It does not reduce the processability.

FIG. 1 is a schematic view showing an example of the manufacturing process of the entangled mixed fiber multifilament composite yarn preferably used in the present invention. As shown in FIG. 1, the core yarn 2 made of the high shrinkage fiber multifilament yarn unwound from the package 1 is processed to form a fluid turbulent region (actually compressed air) via the first supply roller 3. It is fed to the device 4 at a low overfeed rate. On the other hand, the sheath yarn 6 which is unwound from the package 5 and which is composed of the multi-filament yarn with low shrinkage and separability is passed through the second supply roller 7 to the processing device 4 with a larger overfeed ratio than the core yarn 2. Supplied. These core yarns 2 and sheath yarns 6 are suitable guides 8,
It is simultaneously supplied to the processing device 4 via 9. Further, the sheath yarn 6 can be directly supplied from the guide 8 to the processing device 4 without going through the guide 9.

The core yarn 2 which has passed through the fluid turbulent region of the processing device 4.
The sheath yarn 6 and the sheath yarn 6 are formed into a composite yarn 10 in which open loops and closed loops are mixed and are entangled and integrated with each other in a protruding state, pass through the take-up roller 11, and are provided subsequently. The composite yarn 10 is subjected to a bulkiness latentizing treatment by pulling the composite yarn 10 between the take-up port 11 and the tension roller 12 at an appropriate tension ratio (alder feed), and then the composite yarn 10 is packaged by the winding device 13. It is rolled up to 14. The surface of the composite yarn 10 wound up in the package 14 is a composite yarn having a smooth surface in which large loops disappear from the surface of the yarn and the surface cannot be considered as a bulky yarn.

FIG. 2 is a schematic view showing the appearance of the entangled mixed fiber multifilament composite yarn preferably used in the present invention.
(A) is before the bulkiness making treatment, and (B) is after the bulkiness making treatment.

As shown in FIG. 2A, in the entangled mixed fiber multifilament composite yarn 10, the high shrinkage multifilament yarn forming the core yarn 2 is relatively the composite yarn 10.
Is mainly located on the core side, and the sheath thread 6 made of a splittable composite fiber multifilament thread with low shrinkage is located relatively on the sheath side. The individual filaments 15 forming the sheath yarn 6 form loops of various sizes, and
As shown in (A), it is entangled and / or mixed with other individual monofilaments constituting the sheath yarn 6 and also entangled and / or with individual monofilaments 16 constituting the core yarn 2. The composite fibers 10 are mixed and the individual single fibers are entangled and bundled by the mixed fibers to form the composite yarn 10.

The loop formed on the surface of the composite yarn is Ω.
There is a mixture of closed loops in the shape of a letter or l (lowercase letter "L") and open loops (also called slack) in the shape of an arc with a long opening for its height. Randomly protruding on the surface of the composite yarn. These loops have various sizes, but small ones form a closed loop of Ω-shape or L-shape, and large ones form an arcuate open loop at a high rate. The number and size of these loops are determined by the material composition and processing conditions of the core yarn and the sheath yarn. Out of these loops
Medium and small ones are relatively stable and form a closed loop.
However, a large loop has many open loops, and a phenomenon in which the loop is squeezed and moves or becomes entangled even when it is entangled with a loop of an adjacent thread appears, which causes a decrease in high-order processing permeability. Therefore, in order to eliminate this phenomenon, the above-described bulky latent processing is performed.

As can be seen from FIG. 2 (B), the bulky latentized composite yarn 10 has a small loop remaining, but has a smooth surface as a whole like an ordinary yarn. I understand.

When the composite yarn having the properties shown in FIG. 2 (B) is used, the high-order passability is very good, the pass through the diameter adjusting process is easy, the passability of the heddle and the reed is good, and the warp opening failure is good. Also disappears.

The high shrinkage multifilament yarn of the core yarn used in the present invention preferably has the following properties.

First, the shrinkage factor of this yarn is at least 10 by shrinkage treatment such as heat shrinkage or swelling by liquid treatment.
% Is desirable. This is because if the shrinkage ratio is small, it will not be possible to impart satisfactory bulkiness and high density to the woven fabric. This shrinking treatment is preferably performed by heat treatment, and more preferably it can be performed by boiling water. Further, since it is necessary for the core yarn to shrink the yarn sufficiently after being made into a woven fabric, it is desirable that the ratio of the fibers to at least the whole composite yarn is at least 30%. If this ratio is small, a satisfactory shrinkage cannot be obtained.
If the monofilament constituting the core yarn is too thin, the shrinkage force will decrease, and if it is thick, the shrinkage force will increase, but the flexibility of the woven fabric will be impaired. Of course, the range of 1 to 15 d is suitable, though it depends on the constitution of the sheath yarn.

The material used for the core yarn is not particularly limited. However, if the shrinkage is to be performed by heat, it is preferable to use thermoplastic synthetic fiber multifilaments. Furthermore, although related to the material of the sheath yarn, it is desirable to use synthetic fibers containing the copolymer rather than the entire single component.

The sheath yarn of the low-shrinkable, dividable composite fiber multifilament yarn used in the present invention has the following properties.

First, it is a dividable type composite fiber multifilament yarn, which is constructed such that after weaving, the single fiber of the conjugate fiber can be divided into fine fibers, and the division is mechanical peeling type, shrinkage rate. It is desirable that the single fiber is a composite fiber that can be divided into a plurality of fine fibers through an appropriate means such as a swelling agent peeling type by a non-equilibrium or a chemical solution, a sea-island type sea-part dissolving and removing type. It is desirable that this yarn has at least 30% or more of fibers in the entire composite yarn. This is because when the content is small, the amount as the sheath fiber is insufficient and satisfactory bulkiness cannot be obtained. further,
The thickness of each single fiber composing this yarn is 0.5 to 2.
It is 5d. When it is too thin, single fiber breakage occurs frequently during each processing step, which lowers the product quality and lowers the operating rate, which is not preferable. If it is too thick, it becomes difficult to form a fine closed loop, and it becomes difficult to obtain a bulky and uniform composite yarn. The thickness of the fine fibers contained in the single fiber is 0.4d or less. If it is thicker than this, it becomes difficult to obtain a very soft touch.

Further, it is preferable that the shrinkage ratio of the sheath yarn is smaller than that of the core yarn, and the difference in shrinkage ratio with the core yarn is at least 5%. The larger the difference between the contraction rates of the core yarn and the sheath yarn, the greater the bulkiness. That is, the length of the sheath yarn corresponding to the difference in the shrinkage ratio between the core yarn and the sheath yarn protrudes outward from the core yarn. This is because if the difference in shrinkage ratio is small, the bulky latently treated product will have a considerable increase in the density of the fabric even if the fabric is shrunk by heat treatment, but the bulkiness will not increase so much.

The entangled mixed-fiber multifilament composite yarn obtained as described above and having the above-mentioned properties is used as a warp and a weft of a woven fabric, or a warp and a weft, and is woven by a usual means. At the time of weaving, design is performed in consideration of the degree of shrinkage of the woven fabric and the degree of increase in bulkiness, and the weaving is performed based on the design. Weaving is performed by a usual means without using any special means. The resulting fabric is scoured by ordinary means,
Dyeing and processing are performed, but in these processes, at least shrinking treatment is performed in the longitudinal direction of the entangled mixed fiber multifilament composite yarn to increase the density and bulkiness of the woven fabric. In these shrinking treatments, it is preferable to use a shrinking means by heat treatment since the process can be simplified. In the present invention, when the shrinkage due to the heat treatment is completed, the dividable composite fiber multifilament yarn is subsequently subjected to a fine fiber treatment. A known means is also applied to this fine fiber treatment, but it is preferable to use this means because the liquid treatment for dissolving and removing the sea component or the adhesive component can be carried out easily and surely.

In the bulky fabric of the present invention thus obtained, open loops and closed loops are mixed and projected on the surface of all or part of the yarns constituting the fabric, and these open loops are projected. The closed fiber mainly has a single fiber fineness of 0.4.
It is composed of fine fibers of d or less, and a characteristic feature is that a plurality of these fine fibers form such a loop while maintaining a substantially aggregated state. In the practice of the present invention, depending on the division processing conditions for fine fiberization, etc., some loops are in the state of not being finely fiberized over the entire loop, but are finely fiberized. Some of the individual fine fibers are scattered.

In the present invention, it is preferable that the latent loop yarn manufacturing method described above is carried out under the following conditions. That is, the core yarn and the sheath yarn are supplied from the individual supply rollers to the processing device (compressed air supply amount 80 to 120 NL / min) forming the compressed air turbulent flow region with different overfeed rates, discharged from the processing device, and entangled, The latent lube yarn subjected to the mixed fiber treatment is taken up by the same take-up roller.

The term "overfeed rate" as used herein means that the surface speed of the supply roller is V ₁ and the surface roughness of the take-up roller is V _1.
When it is set to _2, and the feed rate is F (%), F
When the value of (%) = [(V ₁ −V ₂ ) / V ₂ )] × 100 becomes (+), it is called the overfeed rate.

Then, the overfeed rate α of the core yarn is set to 2 to
The conditions may be set so that the overfeed rate β of the sheath yarn is 15% and the sheath yarn overfeed rate β is 5 to 30%.

As a further preferable condition, the yarn drawn out from the take-up roller 11 is 0.4α to 0.8α with respect to the overfeed rate α of the core yarn by the tension roller 12.
It is to wind while continuously tensioning with the underfeed rate of.

In the process of manufacturing the latent loop yarn, the overfeed rate α of the core yarn is set to 2 to 15%, the overfeed rate β of the sheath yarn is set to 5 to 30%, and the difference β-
It is preferable to set α to 3 to 15%. This condition is suitable for producing many small loops and Talumi in the pressure turbulence region.

The latent loop yarn obtained by the above method is a heterogeneous shrinkage entangled mixed fiber synthetic filament multifilament composite yarn having fine loops and tarmi on the yarn surface,
The number and size of the fine loops can be increased by heat treatment without tension.

The above-mentioned minute loops have about 300 loops / m or more of loops A, 50 loops / m or more of loops B and 10 loops or less of loops C defined below.
When heat-treated by free shrinking in hot water of 98 ° C. for 10 minutes, the number of loops B after drying was 1.
It is 5 times or more, and the number of loops C is 50 pieces / m or more. The loop A, loop B, and loop C referred to here are photoelectric fluff measuring devices (TOs) that measure the number of loops and the number of fluffs of a running yarn.
RAY FRAY COUNTER), yarn speed 5
Measured under the conditions of 0 m / min and running tension of 0.1 g / d,
The number of loops / m projecting from the yarn surface by 0.15 mm or more is loop A, the number of loops projecting 0.35 mm or more by loop B, and the number of loops projecting 0.6 mm or more /
m is a loop C.

In the latent loop yarn obtained by the above method, the multifilament yarn located relatively on the core side is composed of a high shrinkage yarn, and the multifilament yarn arranged on the relatively sheath side is composed of a normal or low shrinkage yarn. There is. The number and size of loops and tarmi present in the latent loop yarn are small, and the bulk height is relatively small. In particular, 10 loops and Talmi protruding from the thread surface by 0.6 mm or more
It is characterized in that it is extremely smaller than m and is almost equal to or less than m.

That is, in the state immediately after the yarn has passed through the compressed air turbulent flow region and processed as the entangled mixed fiber composite yarn, the appearance as a bulky yarn is hardly seen.

However, when this latent loop yarn is heat-treated in hot water of 98 ° C. for 10 minutes without tension, the core yarn is a high shrinkage yarn and the sheath yarn is a low shrinkage yarn or a normal shrinkage yarn. The loop yarn itself contracts. When the latent loop yarn itself shrinks, the filaments of the individual core yarns that make up this yarn and the filaments of the sheath yarn are entangled with each other by entanglement and mixing, and the sheath yarn is a normal shrink yarn or a low shrink yarn, The shrinkage of individual filaments is small, and as the core yarn shrinks, it becomes a loop or tarmi and becomes a bulky latent loop yarn protruding on the yarn surface.

In the actual loop yarn in which the loops and the talmis were exposed by the heat treatment, the loop B protruding from the yarn surface by 0.35 mm or more was 1.5 times or more compared to that before the treatment, and the loop C protruding from the yarn surface was Increased to 50 pieces / m or more,
Significantly increases bulkiness. The latent loop yarn thus obtained has latent loops and talmis during yarn production, and very few loops C project on the yarn surface. Therefore, the running resistance of the yarn is small since the bulk of the yarn itself is low and the yarn surface is relatively smooth.

Especially when it is used as a warp of a woven fabric, the heddle and the reed have a good passing property, and the loops are not entangled with each other.
It does not cause poor opening. Therefore, it can be used as a warp of a woven fabric. And during dyeing after weaving,
A heat treatment (drying, moist heat, steaming) under high temperature and no tension, alone or in combination with dyeing, reveals loops and Talmi of latent loop yarns to obtain a dense and bulky fabric. Can be done.

[0044]

Example 1 Polyester yarn having a boiling water shrinkage of 20% 12 denier 30 filament as the multifilament yarn constituting the core, and boiling water shrinkage of 8 as the multifilament constituting the sheath yarn. % Of polyester yarn splittable composite multifilament 50 denier 36 filaments (sea-island type 3 split, sea component 20%, island component 80%), core yarn overfeed rate +10
%, Sheath yarn overfeed rate + 18%, compressed air supply 9
It is supplied to a turbulent flow nozzle of 0 NL / min to make a bulky yarn, and further, tension and latent bulking treatment is performed between the take-up roller and the tension roller under an underfeed rate of -5.6%.
The following entangled mixed fiber multifilament composite yarn was prepared.

Fineness 85 denier Boiling water shrinkage rate 18.5% Loop A 551 pieces / m Loop B 192 pieces / m Loop C 7.8 pieces / m The above-mentioned composite yarn is wound on a small crepe and boiled water (98 ° C.). ) In 1
After shrinking for 0 minutes in a free state, the small ridges are reeled and wound on a bobbin, and loop A,
When B and C were measured, it was 520 loops / m loop 307 loops / m loop C 148 loops / m.

The above-described composite yarn which has been subjected to the latent bulking treatment is used as a warp without warping, a polyester multifilament yarn having a boiling water shrinkage of 20% in the weft, 20 denier, a polyester filament having 8 filaments and a boiling water shrinkage of 8%. Multifilament yarn 20 denier 48 filament yarn,
Different shrinkage mixed yarns mixed with an interlace nozzle are plied with lower twist S-800T / M and upper twist Z-600T / M, using warp density 110 yarns / 24.5mm, weft density 8
4 / 24.5 mm plain weaves were woven in a water jet loom. The seaweed obtained was relaxed (98 ° C), intermediate set (180 ° C), seamed and divided by 5% weight reduction (fabric weight ratio) with a 3% caustic soda solution, and then dyed and finished (160 ° C). The woven fabric obtained was as follows.

Warp density 129 lines / 25.4 mm, weft density 1
It is a high density fabric of 00 fibers / 25.4 mm, and there is a loop of ultrafine fibers with a single yarn fineness of 0.4 d or less on the surface of the fabric, and the loop has a peculiar structure in which a plurality of fine fibers maintain an aggregated state. It was a high-density woven fabric with a very soft touch and span feeling.

Example 2 A polyester multifilament yarn of 50 denier 24 filament was used as the core yarn, and 50 denier and 6 of the sheath yarn.
An entangled mixed fiber multifilament composite yarn was obtained by performing an entangled mixed fiber treatment using a polyester multifilament yarn having 0 denier and different single fiber fineness. The number of loops (before latent processing), interlacing processability, high-order processing passability (presence or absence of latent processing), and fabric texture (soft touch) of the composite yarn thus obtained were examined. . Table 1 shows the obtained results. The entangled mixed woven multifilament composite yarn in this example was manufactured using a turbulent flow nozzle having a core yarn overfeed ratio of 5%, a sheath yarn overfeed ratio of 15%, and a compressed air supply amount of 90 NL / min.

[0049]

[Table 1] From the results shown in Table 1, the following points were clarified. First, regarding the entanglement and mixed fiber processability, if the single fiber fineness exceeds 2.8d, the rigidity of the single fiber becomes high, and it becomes difficult to bend and bend, and it becomes difficult to form fine loops, which is an obstacle to higher processing. There are many large loops.

On the other hand, if the monofilament fineness is 0.4 d or less, the monofilaments are easily broken and fluff easily occurs, and the yarn breaks frequently. Therefore, the single fiber fineness may be large or small, and there is suitability, and in this example, 0.4 to
2.8d is a workable region, preferably 0.5 to 2.5
It can be said that the range is d.

On the other hand, the high-order processing passability is related to the number of loops described above, and as the single fiber fineness increases, coarse loops increase, unwinding low piles increase, and the fastener effect increases. If it becomes thin, fluff is generated and yarn breakage appears, which is not preferable. From this, 0.4 ~
The range of 2.0d is good, and more preferably 0.5 to 1.3.
The range is d.

Further, as shown in the high-order passability B, by performing the latentizing treatment, the high-order passability is improved and it can be applied even when the single fiber fineness is 2.1d.

Finally, the texture of the fabric (softness to the touch) improves as the single fiber fineness decreases, but beyond a certain limit, the composite yarn itself cannot be processed.

In the present invention, the splittable conjugate fiber is used for the sheath yarn of the conjugate yarn, and the single fiber fineness of the conjugate fiber is selected so that the processing of the conjugate yarn can be appropriately performed. Furthermore, in order to improve the high-order passability of the composite yarn, a latentizing treatment is performed, and then the composite yarn is used for weaving, the composite yarn is contracted to increase the density, and further, a plurality of single fibers of the composite fiber are added. It is possible to improve the texture of the woven fabric by splitting into the fine fibers, and this point can be fully understood in this example.

[0055]

EFFECTS OF THE INVENTION The present invention having the above-described structure exhibits the following excellent actions and effects which cannot be achieved by the conventional technique.

(A) By using a multifilament yarn composed of a high shrinkage ratio fiber as a core yarn and a splittable composite fiber multifilament yarn as a sheath yarn, a woven fabric having an extremely high density and an extremely soft touch is obtained. can get.

(B) Since the bulky fabric according to the present invention uses the entangled mixed fiber multifilament composite yarn having the above-described shrinkability, the bulky fabric has a very high density and is bulky due to shrinkage. This means that it has excellent water pressure resistance and moisture permeability, which is an excellent property for winter clothing.

Further, the texture of the woven fabric can be made extremely soft by dividing the dividable composite fiber into fine fibers.

C) The characteristics of these woven fabrics can be arbitrarily adjusted by changing the constitution of the entangled mixed fiber multifilament.

D) According to the present invention, the entangled mixed fiber multi-filament composite yarn is subjected to the bulkiness latentizing treatment,
Since a large loop can be removed from the surface of the yarn to form a composite yarn having a smooth surface that does not seem to be a bulky yarn, the yarn can be handled in the same manner as a normal yarn, and thus a conventional bulky yarn can be used. The weaving efficiency can be significantly improved as compared with the case of using.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of a method for producing a latent bulky composite yarn used in the present invention.

FIG. 2 is a schematic view showing the appearance of the entangled mixed woven multifilament composite yarn according to the present invention, where (A) is before the bulkiness latentizing treatment and (B) is after the bulkiness latentizing treatment. There is something.

[Explanation of symbols]

 1: Backbone 2: Core yarn 3: Supply roller 4: Processing device 5: Package 6: Sheath yarn 7: Supply roller 8, 9: Guide 10: Composite yarn 11: Take-up roller 12: Tension roller 13: Take-up device 14: Package 15, 16: Single fiber

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Miura 1 Toei Plant, Tokai Textile Co., Ltd., Toami Textile Co., Ltd., No. 1 Kamimiyake, Heiwacho, Nakajima-gun, Aichi Prefecture (72) Keitaro Nabeshima, Nakanoshima, Kita-ku, Osaka 3-3-3 Toray Co., Ltd. Osaka Head Office (72) Inventor Akira Ogawa 3-3-3 Nakanoshima, Kita-ku, Osaka City Toray Co. Ltd. Osaka Head Office

Claims (3)

[Claims] 1. An open loop and a closed loop are mixedly projected on the surface of all or part of the yarns constituting the woven fabric, and the open loop and the closed loop have a single fiber fineness of 0.4.
A bulky woven fabric comprising fine fibers of d or less, wherein a plurality of these fine fibers form the loop while maintaining an aggregated state. 2. The yarn comprises a multifilament yarn composed of highly shrinkable fibers on a relatively core side, and a splittable composite fiber multifilament yarn having a low shrinkage ratio on a relatively sheath side. 2. The bulky woven fabric according to claim 1, wherein the composite yarn is a yarn that has been subjected to a heat shrinking treatment and a dividing treatment for dividing it into fine fibers. 3. The bulky woven fabric according to claim 2, wherein the multifilament yarn located relatively on the core side has a single fiber fineness of 1 to 15 denier.