KR20180133377A - Barkysa - Google Patents

Abstract

A super lug (1) which forms a continuous loop without breaking and a lug (2) which substantially fixes the supercharger (1) by interlocking with the super lug (1) The number of loops is 1 / mm to 30 / mm, the elasticity is 80 cN / dtex or less, and the elongation recovery rate at the time of 10% elongation recovery is 50% or more. In addition to good tactile feel, it provides an excellent light weight, warmth, and a stretchability.

Description

Barkysa

The present invention relates to a bulky yarn in which a plurality of loops are formed in a surface layer portion, and can be applied in a wide range of fields from medical use to industrial use because it has a soft touch and high heat retention.

Synthetic fibers composed of thermoplastic polymers such as polyester and polyamide are characterized by high basic characteristics such as mechanical properties and dimensional stability and excellent balance. Therefore, in addition to the manifestation of the basic performance from the polymer properties due to the polymer properties, the fiber materials utilizing these materials have been widely used not only for medical applications but also for interior, vehicle interior, and industrial use by making various structural forms by higher order processing.

The development of new technologies related to synthetic fibers has been technological innovation with the imitation of natural materials as motivation, and various technological proposals have been made in order to express the functions derived from natural complex structures by synthetic fibers . For example, there are a variety of things such as structural color development represented by morpho butterfly and water repellency shown in leaves of lotus flowers from the manifestation of unusual tactile sensation (rattling, flexibility) by imitating a section of silk, There is a challenge to the development of functions such as soft touch and light weight and warmth.

Natural feathers are a mixture of a down ball (a lumpy cotton) and a feather (feather), which are generally taken from a chest of a waterbird. These are derived from a specific structural form of the keratin fibers, rich in soft touch, easy to follow the body, and exhibit excellent light weight and warmth. For this reason, products using natural feathers as filling pads are widely recognized even by general users, and they are widely applied to medical products such as needle pads and jackets.

However, from the viewpoint of nature conservation, capture of waterbirds is limited and there is a limitation on the total production of natural feathers. In addition, due to abnormal weather or the occurrence of infectious diseases, the supply amount thereof fluctuates greatly, and in addition to the price increase, unstable supply amount becomes a problem. In addition, the use of natural feathers is often problematic due to its characteristic odor and animal allergies, although it has undergone many processes such as budding, screening, disinfection, and degreasing. In addition, from the viewpoint of animal protection, there is a movement to exclude the use of natural feathers in Europe and the like. For this reason, attention has been paid to the material of the underpants made of synthetic fibers capable of stable supply and the like.

Although a large number of synthetic fibers have been proposed for many years, there have been no cases where natural feathers have been reached in terms of basic properties such as elasticity, compression recovery, and soft touch.

For example, as shown in Patent Document 1 and Patent Document 2, when the fiber aggregate state is spherical or radial, the bulky property derived from the structure is improved.

BACKGROUND ART [0002] Conventionally, yarn processing techniques used for the purpose of high value addition of fibers, for example, by twisting after actually twisting fibers, or by blending one or more kinds of fibers with fluid processing nozzles or the like It is generally known that a processing yarn having a bulky property can be manufactured. Since the processing yarn having such a bulky characteristic is basically long fiber, it can be processed into various forms, and it is also considered to be applied to the material of the undergarment by utilizing the bulkiness and soft touch of the processing yarn.

In Patent Document 3, loops are formed on the surface layer by fibers which are imparted to the waist gauge by imparting yarn shaking or the like to only one of the fibers by using two kinds of fibers, and by imparting actual twist to each other at once. Thereafter, a twist is released by rubbing with two discs or the like to obtain a bulky knitted fabric. Obviously, with this technology, there is a possibility that a balic yarn having a loop composed of superimposed yarns can be obtained by adjusting the degree of yarn shaking or the like in accordance with the conventional method.

Patent Document 4 is a technique in which compressed air is injected from the vertical direction into the running yarn in the interlaced nozzle, and the superfluous yarn fed in excess is fixed with the yarn length difference by opening and intertwining. In Patent Document 4, there is a possibility that a superabsorbent yarn having a bulky property in which a superabsorbent having a loop shape is present in the surface layer can be obtained.

Japanese Patent Publication No. 48-7955 Japanese Patent Publication No. 51-39134 Japanese Patent Application Laid-Open No. 2011-246850 Japanese Patent Application Laid-Open No. H06-67430

What is shown in Patent Document 1 and Patent Document 2 is a feeling of foreign body feeling when compressed, and does not come from the viewpoint of soft touch of natural feather. In a fiber structure mainly composed of these short fibers, the bulkiness and flexibility (compression recovery) of the structure are caused by the mechanical properties and fineness (thickness) of the fibers used. For this reason, in order to balance the characteristics of bulkiness and flexibility, such as natural feathers, a further improvement was required.

In Patent Document 3, when the twist is loosened while grasping the loop yarn partially protruding from the twist yarn with rubber or the like in a mechanical friction device, the protruding loop is partially broken or deteriorated. When the processed yarn is used as a sock, the yarn is ultimately filled up by bundling several to several tens of yarns, so that the deteriorated yarn (nappy yarn) is intertwined remarkably with the yarn of another yarn. When the entangled superabsorbent is charged, it creates a foreign body feeling to damage the tactile sensation, or promotes entanglement, which may degrade over time.

In Patent Document 4, when the running yarn in the nozzle is disturbed and subjected to carding treatment, the yarn is shaken in a very short cycle to cause entanglement of the running yarn. Therefore, a small loop influenced by the nozzle shape spontaneously forms at an excessively high frequency. In addition, the size of the loop varies in the direction of the fiber axis due to the superimposition of random rope, which limits the bulkiness. Further, the loop yarn formed in the nozzle is retained inside the nozzle, and then discharged out of the nozzle by the jet air. As a result, the size of the loops and the length of the warp yarns forming the loops vary in the direction of the fiber axis of the processed yarn, resulting in looseness. In this case, particularly, the snakes having looseness tend to be entangled with the other snakes, and the problems such as the passage of the process in high-order machining and the connection of the points where the snakes are intertwined are connected to the foreign object.

In addition, in the case of using a processed yarn as described in Patent Documents 3 and 4 as a cotton wool, both ends of the processed yarn are used for the purpose of suppressing entanglement and twisting, And fixedly used. However, in the processed yarn described in Patent Document 3 or Patent Document 4, since the processed yarn itself has no elongation property, the filament yarn in which the yarn is fixed in the right direction is held in the filling material, and an unpleasant sense of restraint There is a case. Particularly, in the case of sewing with clothes or the like, it is necessary to design the elbow or the knee, the neck or the waist circumference having a large movable range to have a margin, and therefore, there was.

For this reason, entanglement between the processing yarns is suppressed while having a very high elastic modulus due to the loop, and a bulk yarn having good stretchability is desired.

It is an object of the present invention to provide a binocular suitable for a high-performance thermal insulation material.

The above object is achieved by the following means.

(1) A superabsorbent which forms a continuous loop without breaking, and a nodule which substantially stitches the nodules by interlocking with the nodules, wherein the number of loops protruding by 3.0 mm or more from the surface layer is 1 / 30 / mm, a modulus of elasticity of 80 cN / dtex or less, and a height recovery rate of 50% or more at the time of 10% elongation recovery.

(2) The fibers according to (1), wherein the monofilament fineness of the constituent fibers is 3.0 dtex or more, and the monofilament ratio (seconds / core) of the monofilament yarn is between 0.5 and 2.5.

(3) A binocular as described in (1) or (2), wherein the examination is a side-by-side type or eccentric core-sheath type conjugate fiber, and the fibers constituting the superabsorbent yarn are three-dimensional crimp structures having a radius of curvature of 2.0 mm to 30.0 mm.

(4) The embossing yarn comprising a superabsorbent to form a loop and a nodule to substantially fix the superabsorbent by intertwining with the superabsorbent, wherein the superabsorbent does not substantially break and forms a continuous loop, and the density is less than 1.00 g / (1) or (2).

(5) The punctured yarn according to (4), wherein the superfine yarn has a three-dimensional crimp structure.

(6) Bulk fibers according to (4) or (5), wherein the sandwiched composite fiber has a hollow section having a hollow ratio of 20% or more.

(7) The bagasse according to (6), wherein the conjugated component of the conjugated fiber is a polyolefin, and the sea component is composed of a polyester.

(8) A yarn having a ten-fold modulus of 1.5 cN / dtex and a tensile modulus of less than 1.5 cN / dtex in a yarn having a three-dimensional crimp structure forming a loop, (1) or (2), wherein the fiber length ratio of the fiber after stretching is 80% to 100%.

(9) A bag according to (8), wherein the fiber elongation at the time of applying the load is 1.5 or more and the fiber length restoration after the load-imparting elongation is 90 to 100%.

(10) The vulcanization yarn according to any one of (1) to (9), wherein the inter-fiber static friction coefficient is 0.3 or less.

(11) The binocular according to any one of (1) to (10), wherein all of the inspection and nonspelling are hollow hollow fibers having a hollow ratio of 20% or more.

(12) A fiber product comprising at least a part of the naked yarn described in any one of (1) to (11).

(Effects of the Invention)

Since the embossed yarn of the present invention has a unique bulky structure in which a loop having a three-dimensional crimping shape is formed on the surface layer, entanglement and the like between the embossing yarns are suppressed, so that in addition to a good feeling without a foreign body feeling, Heat insulation and so on. In addition, since it has a pleasant stretchability that undergoes elongational deformation at a low stress, it is excellent in operation yieldability to be elongated and deformed flexibly in accordance with the movement, in addition to adhesion, for example. Thus, since unnecessary voids are not formed, It can be utilized as a high-performance lightweight thermal insulation material having excellent wearing comfort and keeping warm function.

1 is a schematic side view of an example of the present invention
Fig. 2 is a schematic diagram for explaining a method of measuring an actual surface
3 is a schematic diagram illustrating a three-dimensional crimp (spiral) structure;
4 is a view schematically showing an example of a cross section of a side-by-side type composite yarn and an eccentric core-sheath type composite yarn constituting the embossed yarn of the present invention
5 is a view schematically showing an example of a cross section of a hollow fiber composite yarn constituting the embossed yarn of the present invention
6 is a schematic process diagram schematically showing an example of a process for producing the saccharide of the present invention
7 is a schematic side view for explaining a suction nozzle used in the method for producing a vulcanization yarn of the present invention
8 is a schematic cross-sectional view for explaining a discharge hole of a spinneret for a hollow section used in a method of manufacturing a bulky yarn of the present invention

Hereinafter, the present invention will be described in detail with preferred embodiments.

The present invention provides a binocular that comprises a superfine which forms a continuous loop without breakage and a screen which substantially fixes superfluidity by interrupting the superfluidity, wherein the number of loops protruding by 3.0 mm or more from the surface layer is one / Mm to 30 pcs / mm, a modulus of elasticity of 80 cN / dtex or less, and a recovery rate of elongation at the time of 10% elongation recovery of 50% or more.

The present invention is characterized in that the naked eye of the present invention is constituted by a superimposition for forming a loop and a superimposition for substantially fixing the superimposition by overlapping with the superimposition. Further, the present invention is characterized in that the loop forms a continuous loop without being broken.

It is preferable that the embossing yarn of the present invention is composed of synthetic fibers from the viewpoint of passing through the process when performing bulky processing and utilizing the characteristics of the present invention at the time of yarn use. As used herein, the term " synthetic fiber " refers to a fiber composed of a polymeric polymer. Among the polymer polymers, the thermoplastic polymer which can be melt-molded is suitable for use in the present invention since the fiber used in the present invention can be produced by employing melt spinning with high productivity.

Examples of the thermoplastic polymer include polyethylene terephthalate or a copolymer thereof, polyethylene naphthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyolefin, polycarbonate, polyacrylate, polyamide, polylactic acid, thermoplastic And a melt-moldable polymer such as polyurethane.

Among these thermoplastic polymers, the polycondensation polymer represented by polyester or polyamide is a crystalline polymer and has a high melting point. Therefore, even when heated to a relatively high temperature in a post-process, a molding process, and a practical use, There is no suitable. From the viewpoint of the heat resistance, it is preferable that the melting point of the polymer is 165 DEG C or higher.

From the viewpoint of improving the light weight of the present invention, it is more preferable to use at least a part of low-density polypropylene which is a polyolefin. Here, in order not only to achieve light weight but also to have tolerance to compression and the like, it is preferable that the molecular weight of the polypropylene to be used is high, and when the melt flow rate (MFR) which is an index of the molecular weight is 20 g / 10 min or less good. The MFR referred to herein is the amount of resin extruded per 10 minutes measured according to the method described in JIS K 7210: 1999, and generally, the higher the molecular weight of the resin, the smaller the MFR tends to be. When the MFR of the polypropylene to be used is within this range, in addition to being difficult to set against compression and bending under use as a vulcanization yarn, the polypropylene can withstand the impact received during processing, do. When polypropylene is used for at least a part of the present invention, it is particularly preferable to use polypropylene containing an antioxidant in order to prevent the generation of oxidative heat at the time of use in a medical product or the like.

The polymer used in the present invention may contain various additives such as inorganic substances such as titanium oxide, silica and barium oxide, various additives such as carbon black, colorants such as dyes and pigments, flame retardants, fluorescent whitening agents, antioxidants, do.

As shown in Fig. 1, the embossing yarn of the present invention is composed of an embossing yarn (1 in Fig. 1) forming a loop and a judging yarn (2 in Fig.

The term "examination" as used herein means a filament existing at a distance of 0.6 mm or less from the surface of the yarn (3 in FIG. 2). This seal surface means a straight line connecting the apostrophe guide 4 when the processed yarn is threaded between the pair of apodization guides (4 in Fig. 2) with the correct length. A filament in which the distance (5 in Fig. 2) from the seal surface is 0.6 mm or less is judged according to the present invention, and is a starting point of the loop. A filament protruding in a loop shape at a distance of 3.0 mm or more from the surface of the seal is a superabsorbent yarn in the present invention and is responsible for the bulky properties of the present invention. The present invention is characterized in that it consists of screening to substantially fix the snorers forming the loop, but the term substantially fixed means that the snorer is self-sustained from the point of intersection with the screening. The loop is formed in the direction of the outer layer of the bulky yarn starting from the point of intersection of the examination and the beginning of the war. In addition, the point of intersection with the examination, that is, in the vicinity of the starting point of the loop, is often a state in which the filament bundles are swirled and scrambled. For this reason, a point at which the superfine which forms the apex of the loop at a distance of 3.0 mm or more from the seal surface intersects with a straight line located at 0.6 mm from the seal surface is defined as an intersection point.

The above-mentioned deadlock has a role of supporting the self-sustaining loop of the snake loop, which is a feature of the present invention, and preferably exists at a certain period. From this point of view, it is necessary to make the number of the seizure points of the examination and the superposition of the warrior in 1 / mm to 30 pieces / mm exist. This range means that loops are present at appropriate intervals and does not interfere with stretchability (elongation recovery) which is an important element of the present invention. From this point of view, as a preferable range for exhibiting good stretchability while playing a role of fixing the loop, it is more preferable that the above-mentioned intersection point exists at 5 / mm to 15 / mm.

It is possible to continuously evaluate the number of loops in the vicinity of the unit length in the fiber axis direction of the processed yarn by utilizing the napple detecting device of the photoelectric type. For example, 0.6 mm and 3.0 mm from the seal surface may be evaluated under the conditions of a normal speed of 10 m / min and a running yarn tension of 0.1 cN / dtex by using a photo transfer type fountain measuring machine (TORAY FRAY COUNTER).

The superabsorbent having the loop of the present invention is substantially fixed by examination and has a shape protruding in the direction of the outer layer on the cross section of the processed yarn.

The protrusion of the loops referred to here refers to a distance from the seal surface (5 in Fig. 2), in which a processed yarn threaded in a correct direction to a pair of yarn guides is two-dimensionally observed from the side surface, To measure. 10 randomly selected processed yarns are photographed so that the entire loop can be observed, and protrusions of 10 loops in each image are photographed. This operation is carried out for a total of 10 images, and a total of 100 points are measured in units of millimeters up to the second decimal place. The average value of these values was calculated, and a value obtained by rounding off the second decimal place or less was used as the loop size (protrusion) in the present invention.

According to the examination by the present inventors, it is preferable that the loop protrudes from the surface of the yarn in the range of 3.0 mm to 100.0 mm, and if it is within this range, the loop structure of the embossing yarn and the bulkiness and rear entanglement suppression The effect can be exerted without problems. Further, considering the workability of the below-mentioned silk yarn, more preferably 3.0 mm or more and 70.0 mm or less. In consideration of the fact that repetitive compressive recovery deformation is applied in an extremely harsh environment such as sports medical care, it is particularly preferable to set to 5.0 mm or more and 60.0 mm or less.

Here, the shape of the loop composed of the snare is a protruding from the examination to the outer layer from the point of intersection, and the shape is preferably a cool nodal loop (tear drop shape) rather than an arcuate loop formed by general interlocking. In the case of the cool nodal loop, since the loop is almost fixed at the point of intersection with the examination, the loop of the sniper can easily return to the original shape even after the compression deformation as compared with the arcuate loop, The above shape is suitable. It has also been found that it is preferable from the viewpoint of suppressing entanglement between the warp and weft yarns that the warp yarn has a three-dimensional crimp structure, and that by adopting this, it is possible to exhibit outstanding bulky yarn due to the synergistic effect with the loop shape.

On the other hand, in the examination of the present inventors, it was found that the above-mentioned effect tends to deteriorate when the loops formed by swirling are broken or partially deteriorated in the middle. Therefore, it is important that the sniper is not broken in the middle of the loop from the viewpoint of balancing the opposite characteristics, that is, the suppression of the bulkiness and the entanglement, which are not conventionally known.

The determination of the breakage can be confirmed by observing at a magnification that allows confirmation of the next point of intersection (the entire loop) from the point of intersection of examination and surveillance at 10 points randomly selected from the processed yarn. 10 stroboscopic observations were made for 10 stroboscopic observations, and the number of broken portions in a total of 100 averages was 0.2 or less. This means that the stroboscopic features of the present invention are in a state of forming continuous loops without being partially broken . In such a range, there is substantially no superannuation with the end of the thread free, and can exist without being entangled with other superannuation. In the case of adding a process of untwisting after applying the conventional twist, or disturbing or opening the inside of the nozzle by powerful air jet, the running yarn may be thrown into the nozzle made of high frequency metal and may be broken or deteriorated . Further, in the case of forming a loop like the present invention, since it is necessary to grasp the twist between the rubber disc and the like, the twist is broken or greatly deteriorated. As a result, the broken snails are wound around other snags or entangled to encourage the fastener effect, resulting in a restriction on the structure of the processed yarn and higher order machining. In the present invention, this point is greatly improved, and the effect produced by the sniper can be sufficiently exerted.

It is preferable that the superabrasive of the present invention has a three-dimensional crimp structure. The term "three-dimensional crimp structure" as used herein means that the single yarn of the filament as illustrated in FIG. 3 has a spiral structure. The evaluation of the three-dimensional crimp can be evaluated by collecting 10 or more single yarns each at 10 positions randomly selected from the yarns and observing each single yarn at a magnification capable of confirming the shape of the crimp with a digital microscope or the like . In this image, when the single yarns to be observed have a shape that is turned in a spiral shape, it is determined that the single yarn has a three-dimensional crimp structure, and in the case of a straight shape, it is determined that the single yarn does not have a crimp structure.

In order to make the present invention more effective, the radius of curvature of the three-dimensional crimp of the superabsorbent has a micron order (10 < ^-6 > m), in which a potential barrel is produced by a general manufacturing method such as conventional side- (10 < ^-3 > m). According to the present invention, it is possible to freely control the bulging property and the repulsion property in the circumferential direction and the cross direction of the processed yarn by the size of the three-dimensional crimp, and naturally, by using this repulsive property, It is also possible to suppress the entanglement. Particularly, by setting the size of the crimp to a millimeter order, it is excellent in terms of balance between bulky character and compressibility, and additionally balance of suppression of entanglement.

In the present invention, the radius of curvature of the spiral structure is preferably in the range of 2.0 mm to 30.0 mm. The radius of curvature of the spiral structure referred to here is a curvature radius of a spiral structure formed by a fiber having a spiral structure in an image observed two-dimensionally by a digital microscope or the like in such a manner as to determine the presence or absence of three- 3 " in Fig. 3) is defined as a length corresponding to the radius of the largest circle that is most inward at two or more places. Ten or more single yarns were collected from 10 randomly selected yarns from each yarn, and each single yarn was observed with a digital microscope or the like at a magnification at which the crimp shape could be confirmed, so that a total of 100 single yarns in a unit of millimeters Is measured. These measured values were calculated as a simple average, and a value obtained by rounding off the second decimal place or less was defined as a radius of curvature of the three-dimensional crimp structure of the present invention.

It is more preferable that the radius of curvature is 2.0 mm to 20.0 mm, and if this range is satisfied, it means that the loop made of superhull has crimp like a spring. For this reason, the sniper touches the point at a point, while having an appropriate repulsive force against the compression in the cross-sectional direction of the puncture key, so that the puncture feeling is very comfortable. It is particularly preferable that the range of 3.0 to 15.0 mm satisfies the effect of the present invention in consideration of the balance with a loop having high workability to be described later. In such a range, the effect of the present invention can be effectively applied to a medical application in which repetitive compression recovery is applied, and particularly to sports medical care used in an extremely harsh environment, without any problem in long-term durability.

What is needed for the manifestation of this effect is not a two-dimensional bend which can be imparted by mechanical indentation, but a single yarn itself has a three-dimensional three-dimensional shape and needs to have a spiral or a structure similar thereto. Conventionally, these crimp forms are relatively unlikely to be accepted as super fast because the fastener phenomenon due to thread entanglement is relatively easy to occur. This is because the fibers that were primarily employed are the common potentially crimped fibers with a fine crimp of micron order. In this case, the fine spiral structures interlock with each other to promote the fastener effect.

On the other hand, the inventors of the present invention have pursued a study focusing on the shape of the yarn in order to achieve restraint suppression between the yarns of the present invention. As a result, it has been found that, in the case where a three-dimensional crimp of a millimeter is formed on a vulcanizer having a loop, a phenomenon completely opposite to the conventional recognition occurs. This is because, even when the yarn bundle has a three-dimensional crimp, the yarn bundle is present in the yarn bundle even if the yarn bundle has an opposite displacement volume, and the entanglement is greatly suppressed. . Namely, according to the definition of the present invention, the bulky knife yarn of the present invention has a movable space depending on the size of the loop, and has a relatively large movable space of hemispherical shape with a radius of 2.0 mm or more centered on the fixed point of the loop do. In this case, single yarns having three-dimensionally crimped yarns which are overwhelmingly large in size with respect to the fiber diameter come into contact with each other at points and are mutually repulsive, so that they can exist independently without entangling. Further, in the filament having a three-dimensional crimp, in addition to the above-mentioned movable space, the single filament itself can be stretched like a spring in the fiber axis direction. Therefore, when the filaments cross each other, can do. This is a phenomenon only in the form of a structure in which a plurality of loops of several to several tens of times are formed in the conventional manner as in the case of the present invention. In addition, the three-dimensional crimping of the warp yarn also works effectively from the viewpoint of the bulge resistance which is a basic characteristic of the present invention. In other words, the above-mentioned point contact between the snowshoes produces an effect of repelling each other even in one processed yarn, and it is possible to maintain the initial bulky character as well as the state of radial opening in the cross section of the processed yarn. The spring-like behavior of the radially spun superabrasive of the present invention is difficult to achieve with conventional simple straight filaments. Further, the snaking is caused by the mutual repulsion between the snakes, and the snaking of the snaking can be greatly suppressed by supporting the snakes having the three-dimensional crimp.

The morphological feature of the present invention that the sniper forms a loop and has a three-dimensional crimp structure can also be seen as a decrease in the coefficient of friction. This is an effect of contacting the contact with the guitar in point, as described above, and is one of the effects of the puncture having the specific structure of the present invention. In the examination by the inventors of the present invention, it is preferable that the inter-fiber static friction coefficient is 0.3 or less in order to suppress entanglement between the processed yarns while having a balding property. The interfiber static friction coefficient referred to here is measured by a radar type friction coefficient tester in accordance with JIS L 1015 (2010). In the present invention, if necessary, processing such as carding or the like is not carried out, and the processed yarn is evaluated by arranging the processed yarn in parallel with a cylinder. When the yarn of the present invention is processed into a fiber product, the fiber tends to have a high tactile feel when the fiber slides and moves appropriately during compression. Therefore, the coefficient of static friction between fibers is preferably low, more preferably 0.2 or less, Is particularly preferable.

It is preferable that the yarn constituting the yarn constituting the yarn has moderate rebound characteristics. This repulsive property can be regarded as the moment of inertia of the fiber, and in view of the object of the present invention, the single fiber fineness of the synthetic fibers constituting it is preferably 3.0 dtex or more. Further, in the case of using a filling material, deformation such as repeated compression recovery is applied. Therefore, the constituting filaments should have appropriate rigidity and more preferably have a single filament fineness of 6.0 dtex or more. The term "fineness" as used herein means a value obtained by calculating the weight per 10000 m from a simple average value obtained by measuring the fiber diameter, the number of filaments and the density, or the weight per unit length of the fiber measured plural times. The practical upper limit of the monofilament fineness in the present invention is 50.0 dtex.

In addition, from the viewpoint of desiring a superior tactile sensation in the puncture of the present invention, the single strand ratio (seconds / core) of the superficial scratch and the examination is preferably in the range of 0.5 to 2.5. In such a range, the fineness of the snowshoe and the screening is close to each other, and it is possible to use without feeling a foreign body feeling when compressed. In addition, as a range that can be efficiently subjected to bulky processing, single strand ratio (sec / core) can be 0.7 to 1.5, which is more preferable because the effect of the present invention is more remarkable. In the present invention, it is possible to combine various fibers. However, from the viewpoint that the above-mentioned efficient fluid processing and a feeling of foreign body at the time of compression are not felt at all, it is preferable to use a fiber having the same single yarn fineness and mechanical properties . Specifically, in the present invention, it is preferable to prepare at least two or more of the fibers produced under the same preparation conditions, and to use them for the examination and the superimposition, particularly, they are preferably single fibers made of one kind of resin Do.

From the viewpoint of reducing the friction coefficient in such a processed yarn and suppressing entanglement, it is preferable that the yarn has a three-dimensional crimp structure in addition to the warp yarn. This is because, in the examination, when the yarn is in a free state, the gap between the filaments originating from the three-dimensional crimp of the examination is present in a state of freezing of the examination that substantially fixes the necrosis, , The loop of the sniper yarn can be slid sideways in a limited space even in the direction of the fiber axis, so that the movable space of the sniper yarn is widened, and the effect of suppressing entanglement and soft touch of the present invention becomes more remarkable. On the other hand, when tensile force is applied to the processed yarn, stretching of the yarn increases the binding force at the breaking point, and loosening of the loop and removal of the yarn are prevented. As for the three-dimensional crimp of this examination, it can be confirmed from the observation of the examination randomly sampled in accordance with the above-described three-dimensional crimp evaluation method.

The bulky fabric of the present invention needs to have a modulus of elasticity of 80 cN / dtex or less. The modulus of elasticity referred to here is obtained by obtaining the stress-strain curve of the processed yarn under the conditions shown in JIS L1013 (1999), linearly approximating the initial rising portion, and calculating the warp. This operation is evaluated for 5 samples per level, and the simple average value of the obtained results is found and the second digit of the decimal point is rounded off.

The modulus of elasticity indicates the rigidity at the time of elongational deformation of the processed yarn. When the value is too high, the processed yarn means that it is difficult to elongate and deform flexibly. On the other hand, if the modulus of elasticity is 80 cN / dtex or less, the processed yarn means that it can be flexibly deformed with an appropriate resistance to the initial deformation, which means that it is excellent in the follow-up performance of operation for the purpose of the present invention. This is because, for example, when sewing with a jacket, it is preferable to appropriately change the characteristics of the sample depending on the region. It is preferable that the elastic modulus is 65 cN / dtex or less . It is particularly preferable to set the modulus of elasticity to 55 cN / dtex or less with respect to the portion which can be a feeling of uncomfortable pressure such as around the neck or the body. The practical lower limit of the modulus of elasticity in the present invention is 10 cN / dtex.

In addition, as an important requirement for achieving the object of the present invention, it is important that the elongation recovery rate at 10% elongation of the processed yarn is 50% or more. The elongation recovery rate referred to herein can be evaluated by a tensile tester used for evaluating the elastic modulus. That is, the processed yarn is stretched 10% under the conditions of a sample length of 20 cm and a tensile speed of 100% / min using a tensile tester, left for 1 minute, and recovered to the position of the original sample length at the same speed. This operation was repeated ten times. The stress-strain curve at this time was recorded, and the length (S0) at 10% elongation and the length (S1) at the time when the stress became zero were determined. The elongation recovery rate I ask. This operation is evaluated for 5 samples per level, and the simple average value of the obtained results is found and the first digit of the decimal point is rounded off.

Elongation recovery rate (%) = (S0 - S1) / S0 100

[S0: length at 10% elongation, S1: length at which stress becomes zero].

Although the effect of the present invention can be sufficiently exhibited when applied to a portion having a large amount of movement, the above-mentioned elongation recovery rate of not less than 50% means that the elastic property at the time of repeated elongation recovery is excellent. In the application in which the bulky fabric of the present invention is used, the strain imparted repeatedly is 10% or less, and it is preferable that the strain is excellent in the elongation recovery rate in this strain. From this point of view, the higher the recovery rate of the elongation referred to herein is, the closer to the rubber elastic deformation is, the more the material exhibits excellent stretchability, and the practical upper limit in the present invention is 100%. When the puncture yarn of the present invention is used for general medical use such as inner or outer use or needle bed for bedding or pillow, it is preferable that the elongation recovery rate is 55% or more. In addition, it is particularly preferable that the elongation recovery rate is 70% or more in sports medical applications where the use condition is excessively severe.

The puncture strength of the present invention preferably has a breaking strength of 0.5 to 10.0 cN / dtex and an elongation of 5 to 700%. The term "strength" as used herein refers to a value obtained by determining the load-elongation curve of the processed yarn under the conditions indicated by JIS L1013 (1999), dividing the load value at break by the initial fineness, . The puncture strength of the present invention is preferably 0.5 cN / dtex or more, and the upper limit of practicability is 10.0 cN / dtex in order to be able to withstand the processability and practical use of the higher order processing step. Also, regarding elongation, in consideration of processability of the post-processing step, it is preferably 5% or more, and the upper limit that can be practiced is 700%. The breaking strength and elongation can be adjusted by controlling the conditions in the manufacturing process, depending on the intended use. The puncture strength of the present invention is preferably in the range of 0.5 to 4.0 cN / dtex when used in general medical applications such as inner or outer use, or in needle beds such as futon beds and pillows. It is also preferable that the breaking strength is 1.0 to 6.0 cN / dtex in sports medical applications where the use condition is relatively harsh.

The inventors of the present invention have studied diligently to reveal the stretchability of the present invention. As a result, the present inventors have found that stretchability is pleasantly expressed in the post-processing bulkie warp yarns by adjusting the characteristics of the warp yarns . As a requirement for expressing this stretch property, in principle, it is expressed if the examination is superior to the elongation recovery. However, in order to achieve the object of the present invention, This is also a valuable requirement from the viewpoint of preventing settling of the processing company. As a result of intensive investigations under such a viewpoint, it has been found that, from the viewpoint that the workability of the processed yarn is good in the following processing, and the required point to be formed is formed, the fibers used in the examination of the present invention are side- Is preferable.

As shown in Fig. 4 (4-1), the side-by-side type conjugated fiber referred to here is an A polymer having different properties (7 in Fig. 4) and a B polymer in the cross section perpendicular to the fiber axis 4 in Fig. 4). As shown in Fig. 4 (4-2), the eccentric core-sheath type conjugate fiber is an A polymer (Fig. 4 (4-2)) on either side of the center of gravity in the cross section perpendicular to the fiber axis, (7 of Fig. 4 (4-2)) is disposed so as to cover it and B polymer (8 of Fig.

All of these fibers express crimp according to the shrinkage difference and the fiber diameter of the A polymer and the B polymer. And the stretch performance of the present invention is exhibited in accordance with the crimp. The crimp to which the composite fibers are expressed is roughly in the order of micrometer order, thereby forming a good fixing point for self-sustaining the loop. It is preferable that the fiber is in the form of a relatively flat fiber in the yarn stage and that the minute crimp is developed after the fabrication is preferable to the durability of the bulky fabric and the running property at the time of processing. Among these fibers, high viscosity polyethylene terephthalate / low viscosity polyethylene terephthalate and polybutyl More preferred are conjugated fibers of side-by-side type of eutectic phthalate / polyethylene terephthalate and eccentric core-sheath type.

Further, in the present invention, it is possible to use a foundry principle to make a bulky yarn having high elongation at low stress and exhibiting anti-settling property, that is, high resilience. In this case, it is preferable to use elastic yarn as the examination. Here, as the elastic yarn used in the examination, fibers containing at least a polytrimethylene terephthalate, a polybutylene terephthalate copolymer and a thermoplastic polyurethane as a main component may be mentioned. Particularly, from the viewpoint that soft feeling is obtained by minimizing tightening feeling due to wearing comfort when worn in a stretched state, it is more preferable to use a thermoplastic polyurethane or a fiber composed of a polyester elastomer in consideration of handleability .

The characteristic of excellent elongation at low stress can be evaluated by the stress at 10% modulus. That is, the 10% modulus indicates the stiffness when a 10% deformation is applied to the fiber, and the lower the value, the more flexible the deformation can be from the beginning. For this reason, it is preferable that the 10% modulus is less than 1.5 cN / dtex as an indicator which can be flexibly deformed in the present invention.

Here, the 10% modulus is the stress when 10% elongation is applied, and the stress-strain curve of the vulcanization yarn is obtained under the conditions shown in JIS L1013 (1999), and the load at the time of 10% Is calculated by dividing by the fineness of the examination, and this operation is evaluated with respect to 5 samples per level, and a simple average value of the obtained results is obtained, and the value obtained by rounding off the second decimal place is used.

When the 10% modulus is high, it means that the embossed yarn is not flexibly deformable. If the stress is less than 1.5 cN / dtex, the embossed yarn can be flexibly deformed from the beginning of the deformation. Therefore, when applied to clothes, the discomfort such as feeling of pressure and feeling of feeling of wearing is reduced, and particularly when applied to the elbows or knees which feel a sense of bracing, it becomes a very comfortable wearing feeling. From the viewpoint of elongation at the low stress, the stress required for the elongation deformation is preferably low, more preferably less than 1.0 cN / dtex, and still more preferably less than 0.5 cN / dtex. As a 10% modulus in the present invention, the practical lower limit is 0.1 cN / dtex.

For the purpose of the present invention, for example, when designing a jacket or the like, it is preferable to change the characteristics of the embossed yarn depending on the part. In the case of the prior art, this characteristic change was adjusted by the amount of charge at the time. In this case, however, the effect of keeping warmth while suppressing the uncomfortable feeling given by the stress due to the elongation of the material such as the neck circumference, the sleeves and the elbow periphery In order to improve the packing property, the packing property and the fit property were not satisfied at the same time. On the other hand, with respect to the embossing yarn of the present invention, it is possible to adjust the yarn embroidery yarn by modifying the characteristics of the embroidery yarn appropriately, and it is possible to produce a yarn embossed yarn having extensibility suitable for each region by a manufacturing method described later, It becomes possible to sew the product.

In order to make stretchability at low stress noticeable, it is preferable that the fiber elongation ratio at the time of load application is 1.1 or more and the fiber length recovery rate is 80 to 100%.

Here, the fiber elongation at the time of imparting the load can be calculated from a change in the length of the specimen before and after the elongation by applying a predetermined load to the specimen taken at a specific length. That is, 5 mm is taken from a puncture failure at 1 m / circumference, hanging from one end of the failure, and an initial load of 0.03 cN / dtex of the sample strand is measured to measure a circular length (L0) before load application. Subsequently, the initial load was removed, and an elongation load of 1.5 cN / dtex of the sample isadded and allowed to stand for 1 minute. Then, a sample length (L1) at the time of load application elongation was measured and a fiber elongation ratio . This operation is evaluated for 5 samples per level, and the simple average value of the obtained results is found and rounded off to the second decimal place.

Load ratio = L1 / L0

[L0: original length (cm) before load extension, L1: length (cm) when load is applied.

After the elongation at the time of load application is measured, the elongation load is removed. Then, the above-mentioned initial load is applied to measure the length (L2) of the sample after the elongation under load. This operation is evaluated for 5 samples per level, and the simple average value of the obtained results is found and the first digit of the decimal point is rounded off.

(%) = (L1-L2) / (L1-L0) x 100

L1 is the length (cm) of the load-imparted stretch, and L2 is the length (cm) of the load after stretching.

When the load-imparting elongation ratio is 1.1 or more, it means that the processed yarn is highly elongated, and when the fiber length restoration ratio is 80% or more, it means that it is excellent in shape recovery after stretching, that is, excellent in anti-settling property. That is, the higher the load-imparting elongation ratio and the fiber length restoration ratio, the closer to the rubber elastic deformation the bulky yarn means, which means that it is suitable for applications where relatively high elongation deformation or repeated elongation recovery is repeated. Therefore, for example, when a processed yarn having such a range of characteristics is used for medical treatment, it is suitable for use in a region where repetitive elongation recovery such as an elbow or a knee is applied, and does not feel stress caused by braces, Since the deformation is almost completely restored, collapse and the like do not occur. When combined with a stretchable side face, it is also possible to make a medical worn on the body. In this case, it is possible to secure a high level of warmth by the adhesion, and in addition, since the medical treatment is flexibly deformed according to the physique of the individual, various people can wear comfortably in one size or sewing pattern.

In order to apply the puncture of the present invention to general medical applications such as innerwear and outerwear, and to applications such as sleepwear, medicines for medical use and medical care for pregnant women, in which the tightening feeling is minimized and soft touch is minimized, And more preferably at least 2.0. Further, when the material is used as a material having excellent shape recoverability such that it is restored to its original shape even after being compactly accommodated, the fiber length recovery ratio after the application of the load is more preferably 90% or more, and more preferably 95% or more.

With respect to these elongation characteristics, the upper limit of the state in which the superabsorbent yarns of the vulcanization yarns are stretched is the upper limit, so that the practical upper limit of the load-imparted extension ratio in the present invention is 20.0.

The fibers used in the present invention are preferably hollow cross-section fibers. This is an advantage of the manufacturing method described later. In addition to the fact that the three-dimensional crimp size of a millimeter order, which is a preferable form of superpowers, can be freely controlled from a large size to a small size relatively freely, Do. That is, in the present invention, the self-sustaining loop of the snake yarn plays a balancing role. The self-reliance of the warrior is based on the point of intersection with the examination, and self-reliance is enabled by the rigidity of the warrior, but it is preferable that the weight of the warrior itself is also light in weight considering the inner ring. For this reason, specifically, it is preferable that the density of the superabrasive (weight per unit volume) is lower, and fibers having a hollow cross section are preferably used. From the viewpoint of lightness of the nippers, it is more preferable that the hollow section fibers have a hollow ratio of 20% or more. Here, the hollow ratio means that the hollow section fibers are cut, and then the cut surface is photographed two-dimensionally with an electron microscope (SEM) at a magnification capable of observing 10 or more fibers. Ten randomly selected fibers are extracted from the photographed image, and the area of the fiber and the hollow portion is measured using image processing software to obtain the area ratio. All the above values were measured for each of the 10 images, and the average value of 10 images was used as the hollow ratio of the hollow section fibers of the present invention. Further, in order to easily evaluate the hollow ratio, the fiber side is observed with a microscope or the like, and the fiber diameter in terms of the circular cross section is measured from the image. It is also possible to calculate the hollow rate by evaluating the ratio of the measured fineness (actual weight) to the fineness (converted weight) converted from the fiber diameter as the solid fiber.

From the viewpoint of light weight and warmth, which is the object of the present invention, it is preferable that the hollow yarn has an air layer, and it is particularly preferable that the hollow yarn has a hollow ratio of 30% or more. With such a range, it is possible to realize better lightness when the processed yarn is bundled, and it means that the air layer has a lower thermal conductivity. The practical upper limit of the hollow ratio in the present invention is 50%.

It is preferable that the superfine fiber of the present invention has a density of less than 1.00 g / cm < 3 >. Here, the density of the superabrasive is the weight per unit volume of the superabsorbent and is measured using a mill tool piping according to the method according to JIS L 1013: 2010. When the density of the superabrasive is within such a range, the product becomes rich in lightweight when used as a filling cotton for medical treatment and bedding, and the comfort at the time of use becomes high. From the viewpoint of improving the light weight of the bulky yarn, the density of the superabsorbent yarn is more preferably 0.95 g / cm 3 or less, and more preferably 0.90 g / cm 3 or less.

Further, in order to impart lightness and mechanical properties and to provide a non-conventional yarn with repulsion, it is preferable that the fibers used for embossing have a hollow cross section. Here, the composite fiber is a composite fiber having a cross-sectional structure in which a conductive component comprising a predetermined polymer is dotted in a marine component composed of the other polymer. As an example of the sea-island conjugate fiber having this hollow section, a donut-shaped sea-island conjugate fiber having a hollow portion 9 at the center of the end face of the fiber and dotted with a filler 10 in the sea- .

As described above, since the hollow portion at the center of the fiber cross-section includes air, not only light weight but also the heat insulating effect is obtained by the air layer included in the hollow portion. In addition, due to the sea-island structure surrounding the hollow portion, the island component dispersed in the sea component against the impact such as compression or bending against the burr is reinforced while maintaining the flexibility of the superpowder. It will become much more repulsive and become a bunker.

The combination of the polymer used for the island component and the sea component of the sea-island composite fiber can be suitably selected in the above-mentioned polymer group, but it is desired to promote the weight reduction of the bulk silica, From the viewpoint of imparting physical properties, it is preferable that the polyolefin is a metallic component and the polyester is a marine component. Since the polyolefin has a low density, the conjugated fiber is rich in lightweight even when used in a cast material. Further, even if the sea component is made of polyester, the same properties as the strength of the composite fiber can be made suitable for the fiber product, and since the sea component as a matrix of the sea-island composite fiber has crystallinity, The resistance to the ring becomes high. In this case, it is preferable that the composite ratio of the figure / solution is from 50/50 to 10/90 from the viewpoint of imparting sufficient characteristics when the sea-island composite fiber is used as a fiber product. From the viewpoint of improving the lightweight property of the conjugated fiber even if the ratio of the low density polyolefin is increased, it is more preferable that the composite ratio of the diagram / solution is 50/50 to 20/80, more preferably 50/50 to 30/70 Is more preferable.

The fiberglass yarn of the present invention can be made into a variety of fibrous structures such as a fiber wound package, a tow, a cut fiber, a cotton, a fiber ball, a cord, a pile, a straight piece, and a nonwoven fabric. The textile products mentioned here are used for general purposes such as general medical care, sports medicine, medical materials, interior products such as carpets, sofas, curtains, car interior products such as car seats, cosmetics, cosmetics masks, wiping cloths, It can be used for environmental and industrial materials such as material removal products. Particularly, it is preferable that the present invention be utilized as a cotton wool because of its effects such as inhibition of bulkiness and entanglement. In this case, a method of making several to several tens of bundles of yarn or a sheet-like material such as a nonwoven fabric may be used for filling the side surface. Particularly, when the sheet is made into a sheet, charging to the side surface is simple, and the charged amount is easily adjusted according to the use. Therefore, there is no need to carry out sewing in a lightweight, heat-resistant material of a thin cloth, and there is no fear of coming out from the side surface, and unnecessary sewing is not required.

Hereinafter, an example of the method of producing the present invention will be described in detail.

The fiber used in the present invention may be a synthetic fiber obtained by forming a fiber of a thermoplastic polymer by a melt spinning method.

The spinning temperature for spinning the synthetic fibers used in the present invention is a temperature at which the polymer used exhibits fluidity. The temperature indicating the fluidity varies depending on the molecular weight, but the melting point of the polymer is a target and may be set at a melting point + 60 캜 or lower. If it is less than this, it is preferable that the polymer is not thermally decomposed in the spinning head or the spinning pack, and the decrease in the molecular weight is suppressed. The discharge amount is a range capable of stably discharging, and may be 0.1 g / min / hole to 20.0 g / min / hole per discharge hole. In this case, it is preferable to consider the pressure loss in the discharge hole that can ensure the stability of discharge. The pressure loss referred to herein is preferably from 0.1 to 40 MPa, and it is preferable to determine the discharge amount based on the relationship between the melt viscosity of the polymer, the discharge hole diameter, and the discharge hole length from such a range.

The thus discharged molten polymer is cooled and solidified, and the synthetic fiber is obtained by being supplied with an emulsion and being taken up by a roller whose circumference is defined. Here, the rate of this determination may be determined from the discharge amount and the target fiber diameter, but is preferably in the range of 100 to 7000 m / min for stable production. From the viewpoint of improving the mechanical properties of the synthetic fibers by making them highly oriented, stretching may be performed once after being wound, and stretching may be continued without winding once. As the stretching conditions, for example, in a stretching machine comprising a pair of rollers, if the fiber is made of a polymer showing a melt-spinnable synthetic fiber, the first roller and the first roller set to a temperature equal to or higher than the glass transition temperature and lower than the melting point, The sheet is stretched in the direction of the fiber axis by the circumferential ratio of the second roller and wound up in a heat setting. In the case of a polymer which does not exhibit glass transition, the dynamic viscoelasticity measurement (tan?) Of the composite fiber is carried out and a temperature higher than the peak temperature of the resulting tan? On the high temperature side may be selected as the preheating temperature. Here, from the viewpoint of enhancing the draw ratio and improving the mechanical properties, it is also preferable to perform this stretching step in multiple stages.

The cross-sectional shape of the synthetic fiber of the present invention is not particularly limited, and the shape of the discharge hole in the spinneret can be changed to give a general cross section, a triangular cross section, a Y-shape, an 8- A hollow shape or the like can be used. In addition, it is not necessary to be a single polymer, and a composite fiber composed of two or more kinds of polymers may be used. However, from the viewpoint of manifesting the three-dimensional crimp of the superabsorbent yarn, which is an important requirement of the present invention, it is appropriate to use the above-mentioned hollow, hollow or side-by-side composite fibers to which two kinds of polymers are bonded. That is, these fibers are characterized by three-dimensionally crimping from the structural difference in the cross-sectional direction by subjecting the fibers to a heat treatment after performing the preparation and the actual processing. For this reason, so-called straight fibers are used at the time of fluid processing, which will be described later, but three-dimensionally crimped fibers are produced by performing heat treatment after a loop forming process by superabrasion. If the fibers are straight at the time of the bulky processing, the yarn is likely to stably run without causing clogging in nozzles or the like. Further, even in forming the loop of the present invention, it is possible to perform the examination and swirling of the spinning yarn efficiently, and the loop is formed very uniformly in the fiber axis direction of the processed yarn. By aiming at the crystallization temperature of the polymer using the processed yarn, the loop is subjected to heat treatment of the processed yarn formed on the outer layer, whereby the yarn is expressed by three-dimensional crimping, thereby becoming the yarn of the present invention.

The three-dimensional crimp of this warp yarn expresses good bulky yarn in both the circumferential direction and the cross-sectional direction of the warp yarn, and it is preferable to suitably control it according to the required characteristics. From the viewpoint of controlling the crimp development after the heat treatment, it is more preferable that the fibers used in the present invention are hollow cross-section fibers. In the case of hollow section fibers, the air layer has a low thermal conductivity at the center of the fibers. For this reason, for example, one of the fibers is forcibly cooled by excessively cooling air after ejection from a spinneret capable of forming a hollow section, or heat treatment is performed in excess on a heating roller or the like during stretching, There is a structural difference in the. In the case of the hollow section fiber, the size of the three-dimensional crimp can be freely controlled from the large size to the small size by the above-described operation, in addition to being capable of being carried out by the single radiator. For this reason, it is preferable for use in the present invention, and from the viewpoint of crimp control by the above-described operation, hollow fiber having a hollow ratio of 20% or more is more preferable, and hollow fiber having a hollow ratio of 30% .

6) of the nip roller or the like (19 in Fig. 6) is supplied with the specified amount (20 in Fig. 6) and the nip (21 in Fig. 6) And suction and sucking by the suction nozzle (12 in Fig. 6) is the first step.

In this suction nozzle (12 in Fig. 6), the flow rate of the compressed air jetted from the nozzle is such that the yarn inserted into the nozzle from the supply roller has the minimum necessary tension and does not cause yarn shaking or the like in the supply roller- It is preferable to inject a flow rate stably traveling. The flow rate of the compressed air varies depending on the hole diameter of the suction nozzle to be used, but the range in which the yarn tension can be imparted and the formation of the loops described later can be smoothly carried out is not particularly limited, / s < / RTI > The target of the upper limit value of the airflow speed is 700 m / s or less. If the airflow rate is in this range, the running yarn runs in the nozzle stably without causing the yarn swinging or the like by the excessively injected compressed air.

From the viewpoint of preventing disturbance and carding in the nozzle, it is preferable that the injection angle of the compressed air (22 in Fig. 7) is a propellant jet jetted at less than 60 degrees with respect to the running yarn, , And it is preferable from the standpoint of uniformly performing loop formation by swirling. It is a matter of course that it is not possible to produce the bag of the present invention by processing by the vertical jet which injects the fluid at 90 degrees with respect to the running yarn. However, it is not possible to open the running yarn by jetting the jet from the vertical direction, From the viewpoint of suppressing the entanglement between the single yarns in the process of the jet process. The processing by the propulsion jet can also suppress the formation of the arcuate small loops which are easy to form in the case of the vertical jet in a short cycle.

It is preferable that no disturbance or carding is carried out in the suction nozzle to form a loop made of superabsorbent yarn necessary for the present invention. It is more preferable that the injection angle of the compressed air is 45 DEG or less with respect to the running yarn from the viewpoint that the multifilament consisting of several yarns to several tens yarns is run without opening the yarn in the nozzle. In order to form a loop outside the nozzle to be described later, it is desirable that the jet airflow immediately after the nozzle has high stability and propulsive force. From this viewpoint, it is particularly preferable that the jetting angle is 20 DEG or less with respect to the running yarn.

Next, the step of turning the yarn sucked by the suction nozzle out of the nozzle to form a loop by superimposition is the second step of the present invention.

The yarn guiding to the suction nozzle may be carried out by one feed and by two feeds. However, in order to manufacture the present invention, it is preferable to perform the feed by two feeds. Here, the term " two-feed " means a method in which two or more yarns are supplied to the nozzles in advance by giving a difference in feeding speed (amount) in the feeding roller or the like. By using the swirling force by the air flow described later, And a bulky structure in which a loop is formed on the outer layer. It is not impossible to manufacture a processed yarn having a loop in an interlaced nozzle or a turbine nozzle for giving disturbance, carding and entanglement effects to the running yarn in the nozzle when utilizing this two-feeding. However, in the chambers processed with these processing nozzles, in addition to the loop being formed in a short cycle, the size thereof is also reduced. For this reason, in order to manufacture the embossed yarn satisfying the object of the present invention, it is very difficult to precisely control many existing parameters. In addition, in the case of multi-layering, there is a possibility that the bulge quality of the processed yarn is different for each spindle, so from the viewpoint of stability of quality, it is preferable to adopt a method utilizing air flow control outside the nozzle described later. Regarding this point, attention is paid to the concept that a loop can be formed by turning two yarns supplied from a position apart from the nozzle without adding disturbance and carding processing in the nozzle, and control of the airflow ejected from the nozzle (Air velocity / actual velocity) of the air velocity and the actual velocity is in a range of 100 to 3,000, the inventor found that a specific phenomenon is that the super turn is turned while being opened.

The airflow velocity referred to herein means the velocity of the airflow jetted from the downstream side of the suction nozzle along with the running yarn, and can be controlled by the discharge diameter of the nozzle and the flow rate of the compressed air. In addition, the actual speed can be controlled by the peripheral speed of the roller that takes the processed yarn after the fluid processing nozzle. Since the turning force of this traveling yarn increases or decreases depending on the air speed and the speed ratio of the yarn, if the aiming point of the desired balck yarn is to be strengthened, the above speed ratio should be made close to 3000, In this case, it is possible to set the value close to 100. It is also possible to change the speed ratio, for example, by changing the flow rate of the compressed air intermittently or by changing the speed of the take-up roller. On the other hand, when the battery of the present invention is used for applications in which a repulsive compression recovery such as packing is applied, the airflow rate / the actual rate is preferably 200 to 2,000. Particularly, in the case of producing a processed yarn used for medical use such as a jacket which is deformed at a high frequency, it is particularly preferable that the air flow rate / yarn speed is set to 400 to 1500 from the viewpoint of imparting adequate restraint and flexibility.

The turning point (13 in Fig. 6), which is a starting point at which the turning force is developed, is started by releasing the running yarn from the accompanying air current. More specifically, it is preferable to change the apostrophe by a bar guide or the like. By taking in the running yarn at a prescribed speed by the receiving roller (15 in Fig. 6) in the traveling direction of the running yarn, To form a loop. It is preferable that the turning point of the running yarn is located at a position away from the nozzle ejection opening from the viewpoint of obtaining a space for causing the turning and a loosening by swinging of the swinging yarn using the diffusion of the airflow jetted from the nozzle. However, to manufacture the bee Fuki of the present invention suitable nozzle - will be changed by the distance between the ejected gas flow rate between the turning point, the turning between squirting a stream travels 1.0 × 10 ^-5 × 10 ^-3 chogan cho ~1.0 It is preferable that a point (13 in Fig. 6) exists. In order to form a dead point between the nozzle and the pivot point in a proper period in balance with the diffusion of the airflow, it is preferable that the distance between the nozzle and the pivot point be between the runs of the jet flow of 2.0 × 10 ^-5 s to 5.0 × 10 ^{-4 s} More preferable.

By controlling this turning point, it is also possible to control the cycle of the null point of the present invention. The above-mentioned deadlock has a role of supporting the self-sustaining loop of the snake loop, which is a feature of the present invention, and preferably exists in a certain period. From this point of view, it is preferable to adjust the turning point so that there is a margin of 1 / mm to 30 pieces / mm in the examination and the superposition of the superficial yarn in the vulcanizer. Such a range is preferable because even after the three-dimensional crimp of the superabrasive is expressed, loops are present at appropriate intervals. From this viewpoint, it is more preferable to adjust the turning point such that the above-mentioned intersection point exists at 5 / mm to 15 / mm.

It is preferable that the processed yarn (14 in Fig. 6) in which the loop made of superhero is formed is subjected to heat treatment after winding once, or after bulky processing, in order to fix the shape and three-dimensionally crimp. In Fig. 6, a processing step in which the annealing is performed subsequent to the loop forming step is illustrated.

This heat treatment (16 in Fig. 6) is performed by heating the processed yarn with a heater or the like, and the processing temperature is the target of the crystallization temperature of the polymer used is 30 deg. In the case of the treatment in this temperature range, since the treatment temperature is distant from the melting point of the polymer, there is no point hardened by fusion between the primer and the examination, and there is no foreign object and the good touch feeling of the present invention is not impaired. A contact type or non-contact type heater can be employed as the heater used in this heat treatment step, but a non-contact type heater is suitably employed from the viewpoint of preventing the deburring before heat treatment and the deterioration of superabrasive. The non-contact type heaters referred to here include air heating type heaters such as slit type heaters and tube type heaters, steam heaters which are heated by high temperature steam, halogen heaters and carbon heaters using radiant heat, and microwave heaters.

Here, from the viewpoint of heating efficiency, a heater using radiant heating is preferable. With regard to the heating time, for example, crystallization proceeds to set the time for fixing the fiber structure of the fibers constituting the processed yarn, fixing the shape of the processed yarn, and completing the crimp development of the warp yarn. It is preferable to adjust according to the characteristics. The processed yarn after completion of the heat treatment process may be regulated by a delivery roller (17 in Fig. 6) and a winder with tension control function (18 in Fig. 6). The shape of the reel is not particularly limited, and it is possible to carry out so-called cheese winding or bobbin winding. Further, it is also possible to put a plurality of pieces in advance in consideration of processing on the final product, to make them into a tow, or to make them into sheets.

It is preferable that the silk-based emulsion is uniformly adhered before and after the heat treatment process of the present invention. The silicon to be adhered here may be subjected to a heat treatment and appropriately crosslinked to form a silicone film for the superimposition and screening. Examples of the silicone emulsions used herein include dimethylpolysiloxane, hydrodienemethylpolysiloxane, aminopolysiloxane, and epoxy polysiloxane, and these may be used singly or in combination. In addition, from the viewpoint of uniformly forming a coating film on the vulcanized yarn, a dispersant, a viscosity adjusting agent, a crosslinking accelerator, an antioxidant, a flame retardant and an antistatic agent can be contained within a range that does not impair the purpose of silicon adhesion. This silicone type emulsion can be used either as a straight emulsion or as an aqueous emulsion, but it is preferably used as an aqueous emulsion from the viewpoint of uniform adhesion of the emulsion. It is preferable that the silicone type tanning agent is treated so that the amount of the silicone type tanning agent can be 0.1 to 5.0 wt% relative to the amount of the vulcanization agent in the mass ratio using the emulsion guide, the oiling roller or the dispersion by spraying. It is preferable to dry it at an arbitrary temperature and time and carry out a crosslinking reaction. It is also possible to laminate the silicone emulsions in a plurality of circuits, and it is also preferable to laminate the silicon emulsions of the same kind or silicones of different kinds so as to laminate a strong silicon emulsion. By forming the silicone coating on the vulcanized paper by the above-mentioned process, the sliding property and the touch feeling of the vulcanized rubber can be increased, and the effect of the present invention can be further enhanced.

(Example)

Hereinafter, the present invention will be described in detail with reference to examples.

Examples and Comparative Examples were evaluated as follows.

A. island

The weight of 100 m of the fiber was measured, and the fineness was calculated by multiplying it by 100 times. This was repeated ten times, and the value obtained by rounding off the second decimal place of the simple average value was regarded as the fineness of the fiber. The single yarn fineness was calculated by dividing the fineness by the number of filaments constituting the fiber. Also in this case, the value obtained by rounding off the second decimal place was regarded as a single-yarn fineness degree.

B. Mechanical properties of the fiber (strength, modulus, 10% modulus)

Using a tensile tester, Tensilon UCT-100, manufactured by OrienTech, the stress-strain curve is measured under the conditions of a sample length of 20 cm and a tensile rate of 100% / min. The load at the time of fracture was read, and the load was divided by the initial fineness to calculate the strength. In addition, the modulus of elasticity was obtained by linearly approximating the initial rising portion of the stress-strain curve, and from the slope thereof. The 10% modulus was calculated by reading the load at 10% strain and dividing by the initial fineness. For any value, this operation is evaluated for 5 samples per level, and a simple average value of the obtained results is obtained. The strength and elastic modulus are rounded to the first decimal place, and the 10% modulus is rounded to the second decimal place.

C. Fiber elongation at 10% elongation

The fibers were stretched 10% under the conditions of a sample length of 20 cm and a tensile speed of 100% / min using a Tensilon UCT-100 tensile tester manufactured by Orientech, and then left for 1 minute, and the position of the original sample length . This operation was repeated ten times to record the stress-strain curves at this time. The length (S0) at 10% elongation and the length (S1) at which the stress became zero were obtained, and the elongation recovery rate was obtained by the following formula . This operation is evaluated for 5 samples per level, and the simple average value of the obtained results is found and the first digit of the decimal point is rounded off.

Elongation recovery rate (%) = (S0 - S1) / S0 100

[S0: length at 10% elongation, S1: length at which stress becomes zero].

D. Fiber elongation and fiber length recovery rate at load application

The fiber is taken 5m from the failure at 1m / perimeter, hanging at the end of the failure, tie the initial load of 0.03cN / dtex to failure, and measure the circle length (L0). Subsequently, the initial load was removed, and a load of 1.5 cN / dtex was applied, and the sample was allowed to stand for 1 minute. Thereafter, the sample length (L1) at the time of load application elongation was measured and the fiber elongation at the time of application of load was determined by the following equation. The operation was evaluated for five samples per level, and a simple average value of the obtained results was obtained. The value obtained by rounding off the second decimal place was regarded as a load-imparted height ratio.

Load-applied elongation ratio = L1 / L0

[L0: original length (cm) before load extension, L1: length (cm) when load is applied.

After removing the elongation load after measurement of the load-applied elongation ratio, 0.03 cN / dtex, which is the same as the initial load, was tied to the failure, and the length of the sample after the load was measured (L2). In this case as well, the operation is evaluated for five samples per level, and a simple average value of the obtained results is obtained. The value obtained by rounding off the first decimal place is used as a fiber length restoration rate.

(%) = (L1-L2) / (L1-L0) x 100

L1 is the length (cm) of the load-imparted stretch, and L2 is the length (cm) of the load after stretching.

E. Density

The density of the fibers was measured using a mill tool piping according to JIS L 1013: 2010. After the sample reaches the equilibrium position in the liquid and stops, the depth of the sample is read from the scale of the mill tool piping up to 1 mm, and the density is compared with the calibration curve. This was performed twice for each level, and a simple average value of the obtained results was obtained, and a density value was obtained by rounding off the third decimal place.

F. Loop evaluation (size, number, fracture)

A load of 0.01 cN / dtex is applied so as not to cause looseness in the processed yarn, and the yarn guides are threaded to a pair of apodization guides at a proper length as illustrated in Fig. The side of the threading machine was photographed with a microscope VHX-2000 manufactured by Gensen Co., Ltd. at a magnification capable of observing the entire loop. The distance (5 in Fig. 2) from the actual surface of the loop tip was evaluated using image processing software (WINROOF) for 10 randomly selected images from this image. This operation is carried out for a total of 10 images, and a total of 100 points are measured in units of millimeters up to the first decimal place. The average value of these values was calculated, and the value obtained by rounding off the second decimal place was used as the loop size (protrusion) in the present invention.

For the same 10 images, the loop tip of the unit distance and the break point of the superimposition were counted, and the number of loops per 1 millimeter and the breaking point were evaluated. The same operation was performed on 10 images, and the value obtained by rounding off the decimal point of the average value was evaluated as the number of loops. In addition, the breaking point of the loop is averaged, and the second point of the decimal point is rounded to the breaking point of the loop. Herein, the sample having a breaking point of less than 0.2 pcs / mm was evaluated as having no fracture (evaluation: A) and having a fracture (evaluation: C) because the loops described in the present invention existed continuously .

G. Cylindrical shape evaluation (three-dimensional crimp, radius of curvature)

At 10 sites randomly selected from the processed yarns, ten or more single yarns were collected, and each single yarn was observed with a microscope VHX-2000 manufactured by Giannos Co., Ltd. at a magnification capable of confirming the crimp shape. When the monofilament observed in this image had a spiral shape, it was judged that there was a three-dimensional crimp structure (evaluation: A), and in the case of a straight type, no crimp structure was determined . In addition, the radius of a circle which is most in contact with at least two points of the crimped fiber (6 in Fig. 3) was evaluated from the same image using image processing software (WINROOF). A total of 100 single yarns randomly extracted as described above was measured in units of millimeters up to the second decimal place and the value obtained by rounding off the second decimal place of the simple average was defined as the radius of curvature of the three-dimensional crimp structure of the present invention.

H. Friction coefficient between fibers

It is measured by a radial type friction coefficient tester in accordance with JIS L 1015 (2010). Here, the evaluation of the coefficient of static friction between fibers is performed by lining the workpiece in parallel with the cylinder.

I. Harmony (inhibitory effect of fastener phenomenon)

A drill with a processed yarn wound over 500 m was placed on a krill and released for 5 minutes at a speed of 30 m / min in the direction of the cross section of the drum. The swinging motion and the jamming of the yarn due to the fastener phenomenon were visually confirmed, did.

S: The fluctuation of the yarn is not seen and can be made good.

A: I can see that the yarn fluctuates slightly, but it can be done without problems.

B: We can see that the thread is pushed and some jam is visible.

C: The thread can not be pivoted or jammed.

J. Tactile

A drum with a processed yarn wound for 500 m or longer was placed on a krill and yarn was formed in the direction of the cross section of the drum using a calibrator to form a wound form. A sample for tactile evaluation was prepared by fixing one point of failure. The tactile sensation when the sample was held was evaluated by the following four steps.

S: Superior in elasticity and flexibility, and excellent in feel of foreign body.

A: Good touch with elasticity and flexibility.

B: Good touch feeling that has a bulky character and does not feel a foreign body feeling.

C: Poor tactile feeling with no bulge feeling.

K. Bulk rating

20 g of the processed yarn was charged into a cylindrical container having an inner diameter of 28.8 cm and a height of 50.0 cm, and the height H (cm) of the space occupied by the yarn when a load of 0.15 g / (Inch ³ / 20g) was calculated from the following expression, and the integer value obtained by rounding off the first decimal place of the value was used as the bulge quality of the processing company.

Bulk property (inch ³ / 20g) = (14.4 ² / 2.54 ³ ) x H

Further, the height of each processed yarn was measured by reading the height in the unit of mm from the scale with zero point on the bottom of the cylindrical container.

[Example 1]

(PET2: IV = 0.5 dl / g) as a B polymer was prepared, and the mixture was melted at 295 deg. C and then weighed to prepare a composite (Compound ratio: A polymer / B polymer = 50) as a side-by-side cross-sectional composite consisting of the A polymer and the B polymer as shown in Fig. 4 (4-1) / 50). A cooling air of 20 캜 was sprayed to the discharged yarn at a flow rate of 20 m / min. After cooling and solidification, the spinning oil was applied and then the non-drawn yarn was wound at a spinning speed of 1500 m / min. The unfired yarn thus wound was judged to be a composite fiber (single yarn fineness of 7.0 dtex) stretched 3.0 times at a drawing rate of 800 m / min between rollers heated at 90 ° C and 140 ° C.

Next, polyethylene terephthalate (PET3: IV = 0.6 dl / g) was melted at 290 deg. C, weighed, and introduced into a spinning pack to obtain three slits (width 0.1 mm, ) Was ejected so as to have a hollow ratio of 30% from the ejection hole for hollow section arranged in a concentric circle. Cooling air of 20 占 폚 was blown at a rate of 30 m / min to the discharged yarn at one side, cooled and solidified, and then radially emulsified, and the non-drawn yarn was wound at a spinning speed of 1500 m / min. Subsequently, the unstretched yarn was wound between rollers heated at 90 占 폚 and 140 占 폚, and hollow fibers (monofilament fineness of 6.5 dtex) stretched 3.0 times at a stretching speed of 800 m / min.

In the process illustrated in Fig. 6, the examination and nubbing were performed at the feeding roller speed of 50 m / min and 1000 m / min, and the sucking nozzle was supplied with the test and nap test. In the suction nozzles, the compressed air was injected at 20 ° with respect to the running yarn at an airflow speed of 400 m / s, and the air was ejected from the nozzles together with the accompanying airflow without interfering with the inspection and superpower. The yarns sprayed from the nozzles were run for 1.0 × 10 ^-4 seconds together with an air flow to change the apostrophe using a ceramic guide, and the processed yarn on which a loop composed of superimposed yarns was formed was taken up by a roller of 50 m / min. The processed yarn was continuously guided to a tube heater through a roller and heat-treated for 10 seconds by heating air at 150 DEG C to set the shape of the vulcanization yarn, and the crimp was expressed in the examination and warp yarn. The bulky yarn was wound on a drum at 52 m / min by a tension-controlled winding machine provided after the tube heater.

In Example 1, loops consisting of superhulls protruded from the yarn surface by an average of 38.0 mm, and the loops were formed into a number of 22 yarns / mm. This protruding loop was excellent in size and cycle uniformity. Further, the warp yarns of the processed yarn had a three-dimensional crimp structure of a millimeter order with a radius of curvature of 5.7 mm and formed a continuous loop in which the breaks were not visible in the warp yarns (broken portions: 0.0)

Subsequently, the silicone emulsion containing the polysiloxane at a concentration of 8 wt% in the processed yarn was uniformly dispersed by spraying so that the final polysiloxane adhesion amount became 1 wt% with respect to the vulcanization agent, and was heat-treated at a temperature of 165 DEG C for 20 minutes, .

In the embossing yarn, the warp yarns forming the continuous loops have a three-dimensional crimp structure, and the inter-fiber static friction coefficient is 0.1. The yarn quality is not problematic, and the yarn can be smoothly wound (Could be: S). In addition, the elastic modulus showing the stiffness was 73 cN / dtex and the elongation recovery rate was 83%, which showed pleasant stretchability (touch: S). The results are shown in Table 1.

[Example 2]

PET1 / PET2 side-by-side composite fiber having a monofilament fineness of 3.0 dtex was prepared by adjusting the discharge amount by a combination of polymers used in the examination of Example 1,

In Example 2, the number of loops was slightly increased by decreasing the monofilament fineness of the examination, and it was easy to deform at the time of elongational deformation, resulting in a soft touch feeling as compared with Example 1. The results are shown in Table 1.

[Examples 3 and 4]

The PBT / PET2 sidebasis (PBT / PET2) obtained by changing the A polymer to polybutylene terephthalate (PBT: IV = 1.2 dl / g) and subjecting it to the spinning temperature of 290 deg. All of the composite fibers were evaluated in accordance with Example 1 except that the composite fibers were judged (Example 3). Further, the polymer combination was the same as that in Example 3, and the amount of discharge was adjusted to collect a PBT / PET2 side-by-side composite fiber having a monofilament fineness of 3.0 dtex (Example 4).

In Examples 3 and 4, the examination showed relatively fine crimp at the yarn stage, and the number of loops was reduced in the bulk key fabrics. In addition, as compared with Example 1, the elastic modulus was low, and it was very flexible and elongated at low stress. In addition, the elongation recovery rate is greatly improved, and even when relatively highly deformed, there is no setting ring, and it is a material suitable for use in a portion having a large movable range. The results are shown in Table 1.

[Comparative Example 1]

The polyethylene terephthalate (PET3: IV = 0.6 dl / g) used in the preparation of Example 1 was melted at 290 deg. C, weighed, and introduced into a spinning pack to form three slits , 23 in Fig. 8) was discharged from the discharge port for hollow section disposed in a concentric pattern so as to have a hollow ratio of 30%. The cooling wind at 20 占 폚 was increased (100 m / min) compared with that of Example 1, sprayed from one side to the yarn tester, cooled and solidified, and then subjected to spinning emulsion application and unwound at a spinning speed of 1500 m / min. Subsequently, in the same manner as in Example 1 except that the uncoupled, unwounded yarn was subjected to screening and initiation of hollow fibers (monofilament fineness of 6.5 dtex) stretched 3.0 times at a stretching speed of 800 m / min between rollers heated at 90 ° C. and 140 ° C. .

In the comparative example 1, the shape characteristics of the first embodiment substantially coincide with each other, but the loop size is small and the number of loops is reduced. But the elasticity was high and the elongation recovery rate was lowered. The results are shown in Table 2.

[Comparative Example 2]

A nozzle was used in which the injection angle of the compressed air was changed to 90 °, and a pivot point by a ceramic guide was not provided. However, in Comparative Example 2, the air entrainment rate was reduced to about 200 m / s, which is about half of that in Comparative Example 1, because the entanglement of the screening and superimposition was excessive at the compressed air flow rate as in Comparative Example 1, And collecting and characterizing the processed yarn.

In the processed example of Comparative Example 2, since the loop size due to the superimposition at the time before the heat treatment was smaller than that in Example 1 or Comparative Example 1 and was formed in a very short cycle, when the superimposition was crimped by heat treatment, The loop can be formed, but the looping property is insufficient. When the details of the loop composed of superheroes were checked, there was a large deviation in the loop size and a comparatively large number of break points (no breakage: 0.5) that could not be confirmed before the heat treatment. The results are shown in Table 2.

[Comparative Example 3]

Using the processed yarn of Comparative Example 2, the processed yarn was subjected to a process of grasping the twisted yarn with a pair of rubber disks. Apparent bulkiness was apparently improved, but the breakage of the loop was further increased as compared with Comparative Example 2, and a feeling of foreign body was felt when the twisted entities were promoted and compressed. Compared with the comparative example 2, the number of yarn jams was large, and the yarn was also deteriorated. The results are shown in Table 2.

[Example 5]

PET 3 was prepared by changing the A polymer to polytrimethylene terephthalate (3GT: IV = 1.2 dl / g) and spinning the mixture using the spinneret used in Example 1 at a spinning temperature of 280 ° C. The single fiber fineness was 3.0 dtex in all cases except that the composite fibers were judged.

In Example 5, the number of loops was lowered and the crimp of the crimp was elongated at the time of processing, thereby lowering the elongation recovery rate. However, the stretchability was sufficiently secured. Had. The results are shown in Table 3.

[Examples 6 and 7]

Except that the feeding speed was changed to 50 m / min, 500 m / min (Example 6), 20 m / min, and 1000 m / min (Example 7).

In Example 6 in which the feed rate ratio was reduced, the loop size was slightly smaller than that in Example 1, but the stretchability characteristic of the present invention was equivalent, and the feel was good.

In Example 7 in which the feed rate ratio was increased, the size of the loop was 60.1 mm, which was larger than that of Example 1, but the loops were seldom loosened. As for the touch, it has excellent flexibility and excellent flexibility. However, since it has a structure in which cutting and loosening of superabsorbent yarns are suppressed, the elasticity is also good. The results are shown in Table 3.

[Example 8]

And the airflow rate was changed to 500 m / s.

In Example 8, the tension between the nozzle-take-up rollers was lowered by increasing the airflow speed and the running of the processed yarn was slightly disturbed, but the processed yarn could be collected without any problem. Looseness of the loops was rarely seen in the processed yarn, but the yarn quality was satisfactory, and the stretchable yarn, which is a feature of the present invention, could be collected. The results are shown in Table 3.

[Examples 9, 10]

Regarding the conjugate fiber used for examination, all of the examples were conducted in accordance with Example 2 except that the ratio of the A polymer to the B polymer was changed to 60/40 (Example 9) and 30/70 (Example 10).

The ninth embodiment has almost the same characteristics as those of the second embodiment because there is not a large difference in the crimp shape of the inspection, and it does not greatly affect the shape of the loop of the processing yarn.

In Example 10, the number of loops was lowered by reducing the crimp shape of the examination, and the elongation recovery rate was increased as compared with Example 2. The results are shown in Table 4.

[Examples 11 and 12]

PET1 / PET2 (Example 11) and PBT / PET2 (Example 12) eccentric core-sheath composite fibers obtained by using the composite seam with the eccentric core-sheath composite section shown in Fig. 4 (4-2) Except that the turning point was changed to 0.0006.

In Example 11, the number of loops was slightly lower than that in Example 2. [ On the other hand, in Example 12, the number of loops was increased as compared with Example 4, and the stretchability was improved by increasing the constraint of nodding and judging. The results are shown in Table 4.

[Comparative Example 4]

The hollow fiber PET fibers used in Comparative Example 2 were evaluated in accordance with Comparative Example 2, except that the PET fiber used in Example 5 was used as the 3GT / PET2 sidebid conjugated fiber.

In the sample of the comparative example 4, although the spinning after the heat treatment produced a three-dimensional crimp shape, the curvature radius of the fibers forming the loop was very minute, which was several tens of micrometers, (With fracture: 0.4). Further, by expressing the crimped shape, the loop of the sniper yarn was greatly reduced as compared with that before the heat treatment, and the number of loops exceeding 0.6 mm from the yarn surface was small. Therefore, the tactile feel of the processed yarn is unique like rubber, but it does not have bulkiness and flexibility for the purpose of the present invention. In addition, since the fine crimp of the micrometer order, the breakage of the superabsorbent yarn, and the protrusion of the loop have variations, the coefficient of static friction between fibers is relatively high (0.4). The results are shown in Table 4.

[Example 13]

For the purpose of enhancing the stretchability and flexibility of the processed yarn, the 3GT used for the A polymer of Example 5 was melted at 275 캜, weighed, and introduced into a spinning pack to obtain three slits (width 0.1 Mm, 23 in Fig. 8) was discharged from the discharge port for hollow section arranged in a concentric circle so that the hollow ratio became 10%. A cooling air of 20 캜 was sprayed to the discharged yarn at a flow rate of 20 m / min. After cooling and solidification, a radial emulsion was applied, and then the undrawn yarn was wound at a spinning speed of 1500 m / min. The same procedure as in Example 1 was repeated except that the undrawn yarn was rolled between rollers heated to 70 DEG C and 130 DEG C at a stretching speed of 2.8 times at a drawing speed of 800 m / min.

In Example 13, loops consisting of superhulls protruded from the yarn surface by an average of 38.0 mm, and the loop was formed into a number of 22 yarns / mm. This protruding loop was excellent in size and cycle uniformity. Further, the napping of the processed yarn had a three-dimensional crimp structure of a millimeter order with a radius of curvature of 5.7 mm, and a continuous loop in which the broken portion was not seen was formed in the loop of the warp yarn. (Breaking point: 0.0)

In the above-mentioned embossing yarn, the warp yarns forming a continuous loop have a three-dimensional crimp structure and a fiber-to-filament friction coefficient of 0.1, and the yarn quality is not problematic. I could do it (S: S). In particular, it has a 10% modulus of 1.2 cN / dtex, which means resistance at the time of stretching, and a 100% stretch ratio of fibers after application of the load, which is excellent in anti-settling property, (Touch: S). The results are shown in Table 5.

[Example 14]

In the same manner as in Example 13 except that the polymer was changed to a PBT elastomer (Toray-DuPont "Hytrel") and the spinning temperature was set to 260 ° C for the purpose of further enhancing the stretchability and anti- 13.

In Example 14, the polymer type of the test was changed to a PBT-based elastomer having excellent flexibility. In the case of BULKISA, the modulus was significantly reduced by 10% as compared with Example 13, and it was excellent in stretchability and flexibility. Further, the fiber length restoration ratio is greatly improved, and even when the fiber is deformed by imparting a high stress, there is almost no settling. In the case of medical use, a material suitable for repeated application of strain and deformation . The results are shown in Table 5.

[Example 15]

Polyethylene (PP: MFR = 9 g / 10 min.) Was melted at 265 캜 as a flour component and PET3 (0.65 dl / g) used in Example 1 was melted at 300 캜 as a sea component. The spinning block temperature was 280 占 폚, and a hollow-fiber hybrid yarn as shown in Fig. 5 having a hollow portion at the center of the fiber cross-section and having a donut shape around the hollow portion was melt-spun. As the spinneret attached to the spinning pack, a composite spinneret comprising a metering plate and a distribution plate described in JP-A-2011-174215 is used, and a circular space in which a distribution hole is not formed in the center of the plate is provided as a distribution plate, A distribution hole of the sea component polymer was arranged in an annular shape around the periphery, and a distribution hole of the sea component polymer was surrounded by 6 holes with respect to one distribution hole of the component polymer in the outer periphery. The composite polymer discharged at a composite ratio of 30/70 = 30/70 was prepared by spraying a cooling air at 20 DEG C at a flow rate of 100 m / min on one side, emulsifying the mixture after cooling and solidifying, The filament count was 12, the number of filaments per filament was 32 degrees, the hollow rate was 30%, the density was 0.87 g / cm < 3 > . Further, since the hollow fiber composite yarn was brought into contact with the cooling wind at a high speed, it was cooled asymmetrically on the right and left sides of the fiber, and after the heat treatment, a gentle crimp was developed.

In the process shown in Fig. 6, the composite hollow fiber sheet obtained was fed into the two feed rollers one by one and the composite yarn was fed. The feed rollers were driven at a speed of 50 m / min and the other at a speed of 1000 m / And sucked by a nozzle. In the suction nozzles, compressed air was sprayed at 20 ° to the air flow at a flow rate of 400 m / s, and the air was jetted from the nozzles together with the accompanying airflow to prevent entanglement. The yarns sprayed from the nozzles were run for 1.0 × 10 ^-4 seconds together with an air flow, and the yarn was changed by using a ceramic guide to form a loop composed of superfine yarn.

Subsequently, the processed yarn was guided to a tube heater through a roller, and heat treatment was performed in heated air at 150 ° C for 10 seconds to set the shape of the vulcanization yarn and to induce three-dimensional crimping in the superabsorbent yarn. The bulky yarn was wound on a drum at 52 m / min by a tension-controlled winding machine provided after the tube heater. The silicone emulsion containing the polysiloxane in a concentration of 8 wt% in the collected silica was uniformly dispersed by spraying so that the final polysiloxane adhesion amount became 1 wt% with respect to the bulk silica, and was heat-treated at a temperature of 165 DEG C for 20 minutes to collect the processed yarn did.

In the battery of Example 15, the loops constituted by superimposed yarns protruded from the yarn surface of 21.0 mm on average, and the loops were formed in the number of 22 yarns / mm. This protruding loop was excellent in size and cycle uniformity.

The examination and the warp yarn had a three-dimensional crimp structure of a millimeter order with a radius of curvature of 4.5 mm and formed a continuous loop in which the breaking point was not seen in the loop of the warp yarn. (Breaking point: 0.0)

The yarn forming the continuous loops had a three-dimensional crimp structure, a static friction coefficient of 0.1, and a very smooth yarn from the wound drum. ). Further, it had a bulky property derived from the specific structure of the present invention, and had a feeling of softness excellent in flexibility (touch: S). In the embodiment example 15, as compared with Example 1, but would decrease the stretch castle, bulky evaluation, it exerted an excellent result with 645inch ³ / 20g. The results are shown in Table 5.

[Examples 16 and 17]

The composite ratio and the density of the stretched yarn of the hollow fiber composite yarn used for the superabsorbent yarn were 20/80 and 0.90 g / cm 3 (Example 16), the figure / sea solution was 10/90 and the density was 0.93 g / Cm < 3 > (Example 17).

In the bag 16 obtained in Example 16, there was formed a continuous loop in which the broken portion was not seen in the loop of the sniper. (Snell: S), and had a soft touch with excellent flexibility (touch: S). In the bulky evaluation, it showed excellent bulky with 606 inches ³ / 20g.

The bulkiness sampler obtained in Example 17 formed a continuous loop in which no broken portions were seen in the loop of superhero. Sewing yarn had a three-dimensional crimp structure and had excellent properties (rolled: S) from the wound drum, and had a feeling of softness excellent in flexibility (touch: S). In the bulky test, it showed a good bullet at 581 inches ³ / 20g. The results are shown in Table 5.

[Examples 18, 19]

The eccentric core-sheath composite fiber of PBT / PET2 used in Example 12 was used for the examination. The feeding speed was measured at a speed of 50 m / min, a speed of 500 m / min (Example 18), a speed of 20 m / min, ) In Example 12, respectively.

In Example 18 in which the feed rate ratio was reduced, the loop size was slightly smaller than that in Example 12, but it had good stretch characteristic of the present invention and exhibited excellent tactile sensation.

In Example 19 in which the feed rate ratio was increased, the size of the loop was 38.0 mm, which was larger than in Example 12, but the loops were seldom loosened. Regarding tactile sensation, it has excellent flexibility and excellent elasticity, but also has good structure because it has a structure in which cutting and loosening of superabsorbent yarns are suppressed. The results are shown in Table 6.

[Examples 20 and 21]

All of the PBT / PET2 eccentric core-sheath composite fibers used in Example 12 were used for screening and the PP / PET3 hollow-sheath composite yarn used in Example 15 was used for superimposition (Example 20) . Further, when the feed rate ratio was changed, machining was performed in the case of 20 m / min of inspection and 1000 m / min of super-finishing (Example 21).

In Example 20, loops having a low density and a repulsive property derived from a PET component were formed. As in the case of Example 15, very good bulky properties were exhibited, and good stretchability derived from the eccentric core- Which has not been found in the prior art.

In Example 21, the loops due to superimposition were further enlarged by further increasing the seconds / symbol ratio, and the bulgeability was further improved as compared with Example 20. In Example 21, although the loops were enlarged, the homogeneity was excellent in the fiber axis direction of the processed yarn, and the loop was not loosened. In addition, the hollow fiber having a large crimp was wound around the loop to allow the loop to stand alone, and also had the effect of the PET component and had a pleasant repellency in the examination with the stretchability by the crimp. The results are shown in Table 6.

[Example 22]

A high elasticity yarn by the PBT-based elastomer ("Hytrel") used in Example 14 was used in accordance with Example 20 except for the examination.

The processed yarn of Example 22 exhibited excellent stretchability by using an elastic yarn subjected to elongation deformation at low stress for judging, and was excellent in stability not changing the fiber length even when relatively high strain was applied. In addition, as in the case of the twentieth embodiment, since the hollow fiber yarn was employed for the embossing, the yarn was also excellent in the bulkiness.

1: Supercharged
2: Screening
3: seal surface
4: Apostle's Guide
5: Distance from the seal surface
6: Curvature of three-dimensional crimp
7: A polymer
8: B polymer
9: Hollow portion
10: Metals
11: Marine miner
12: Suction nozzle
13: turning point
14: Processor
15:
16: heater
17: Delivery roller
18: Winder
19: Feed roller
20: Screening
21: Supercharged
22: injection angle of compressed air
23: Slit-like discharge hole

Claims (12)

Wherein the number of loops protruding by 3.0 mm or more from the seal surface layer is 1 / mm to 30 / mm, and the number of loops protruding by 3.0 mm or more from the seal surface layer is 1 / Mm, a modulus of elasticity of 80 cN / dtex or less, and a height recovery rate of 50% or more at the time of 10% elongation recovery. The method according to claim 1,
Wherein the monofilament fineness of the constituent fibers is not less than 3.0 dtex and the monofilament island ratio (sec / core) of the monofilament is between 0.5 and 2.5. 3. The method according to claim 1 or 2,
The examination is a side - by - side type or an eccentric core - sheath type composite fiber, and the fiber constituting the superabsorbent fiber is a three - dimensional crimped structure with a radius of curvature of 2.0 to 30.0 mm. 3. The method according to claim 1 or 2,
A method of forming a continuous loop in a yarn which forms a loop and which substantially obviates the need for stitching of the yarn by virtue of the fact that the warp yarns are not substantially broken, Inquiries. 5. The method of claim 4,
The supercharger has a three - dimensional crimp structure. The method according to claim 4 or 5,
Barkyza, a sea-island composite fiber having a hollow section with a hollow ratio of 20% or more. The method according to claim 6,
The composite fiber is made of polyolefin, and the sea component is composed of polyester. 3. The method according to claim 1 or 2,
Wherein the 10% modulus is less than 1.5 cN / dtex and the fiber elongation at the time of load application is less than 1.5 cN / dtex, Of 1.1 or more, and a fiber length recovery rate after load stretching of 80 to 100%. 9. The method of claim 8,
A fiber reinforcement ratio of 1.5 or more at the time of load application, and a fiber length recovery rate of 90-100% after the load application elongation. 10. The method according to any one of claims 1 to 9,
Wherein the fiber-to-fiber static friction coefficient is 0.3 or less. 11. The method according to any one of claims 1 to 10,
All of the examination and surveillance consists of hollow section fibers with a hollow ratio of 20% or more. A fiber product comprising at least a part of the fibers of any one of claims 1 to 11.

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