JP2005054294A - Bulky entangled yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a yarn for producing a woven or knitted fabric that (a) has excellent heat resistance, mechanical strengths and appearance, (b) well fits to the body such as hands and has excellent workability, (c) hardly causes fluff and dust and (d) has an easy process control and excellent productivity. <P>SOLUTION: The bulky interlaced yarn comprises a multifilament yarn having a kink band and has loops and saggings on the surface of the yarn. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bulky entangled yarn composed of a multifilament yarn having a kink band and having a loop or a tarmi on the yarn surface.

  General-purpose thermoplastic synthetic fibers such as nylon and polyester fibers melt at about 250 ° C., whereas heat-resistant high-performance fibers such as aramid fibers, wholly aromatic polyester fibers or polyparaphenylene benzobisoxazole fibers are about 250 It does not melt at around ℃, and its decomposition temperature is as high as around 500 ℃. The critical oxygen index of nylon or polyester fiber, which is a non-heat-resistant general-purpose fiber, is about 20 and burns well in air, whereas the critical oxygen index of the heat-resistant high-performance fiber as described above. Is about 25 or more, and in the air, it is burned by bringing the flame that is a heat source closer, but if the flame is moved away, the combustion cannot be continued. Thus, the heat resistant high performance fiber is a material excellent in heat resistance and flame retardancy. Therefore, for example, aramid fiber, which is a heat-resistant high-performance fiber, is a clothing product in a scene with a high risk of exposure to flames or high heat, such as fire fighting clothes, racing suits for automobile racing, work clothes for iron making or welding work clothes. It is used in preference. Above all, para-aramid fibers that have both heat resistance and high strength properties are used for sports clothing, work clothes, ropes, tire cords, etc. that require tear strength and heat resistance, and are difficult to cut with a knife. It is also used for gloves. On the other hand, meta-aramid fibers are excellent in heat resistance, weather resistance, and chemical resistance, and are used in fire clothes, heat insulating filters, heat-resistant dust filters, electrical insulating materials, and the like.

  Conventionally, when manufacturing textile products such as clothing products using these heat-resistant high-performance fibers, it is in the form of multifilament yarns or spun yarns that do not have kink bands and do not have loops and talmi on the yarn surface. The fiber was only utilized. However, even if such filament yarn or spun yarn is processed into a fabric to produce a clothing product such as a fire fighting suit, a racing suit or a work suit, the yarn product does not have sufficient stretchability, so that the clothing product The elasticity of was inferior. As a result, when the garment product is worn, there is a drawback that it is not comfortable to wear and is difficult to act.

  In particular, in working gloves used in the aircraft industry, information equipment industry, or precision machinery industry that handle precision parts, from multifilament yarns and spun yarns that do not have conventional kink bands and that do not have loops and tarmi on the yarn surface. In the work gloves, the work efficiency at the time of wearing was poor, which led to a decrease in work efficiency. In the medical field, for example, doctors use rubber gloves or elastomer gloves (hereinafter referred to as “rubber gloves”) to prevent blood from the patient from adhering during surgery of a patient who has a blood infection such as AIDS. Wear. In addition, for example, ambulance crew members contact unspecified injured persons and sick persons, and rubber gloves are used to protect themselves from the blood and body fluids of patients who have not been confirmed to be infected. However, since rubber gloves and the like are easily broken by a surgical instrument such as a scalpel, medical personnel such as doctors and ambulance workers cannot be sufficiently protected from the scalpel or injection needle to which the patient's blood has adhered. Therefore, it is conceivable to wear a glove woven and knitted from the above heat-resistant high-performance fiber with high mechanical strength inside a rubber glove, etc. However, as described above, conventional gloves made of heat-resistant high-performance fiber are stretchable. Because it is inferior, it reduces the work efficiency of medical personnel such as doctors and ambulance workers. Therefore, there is a demand for a glove that is thin and can be used inside rubber gloves, etc., and has stretchability and resistance to cutting.

  Further, conventionally, a spun yarn is generally formed by spinning short fibers of about 38 mm or about 51 mm into yarns, and therefore, the ends of the short fibers protrude from the surface of the yarn and become fluffy. Work clothes and gloves made from spun yarn made of heat-resistant high-performance fibers lose their fluff due to friction during use. For example, they adhere to clean rooms and paint surfaces in a dust-free environment. There is a problem as work clothes and gloves in paint factories where the dust that is produced reduces the product value of the product, and there is a demand for textile products made of heat-resistant high-performance fibers such as work clothes and gloves that are less likely to generate fuzz and dust. It was.

  As mentioned above, in order to improve the poor activity or workability of fiber products made of heat-resistant high-performance fibers that do not have kink bands and do not have loops and tarmi on the yarn surface, Without loss of excellent properties such as heat resistance or flame retardancy inherent in high performance fiber, it has good stretch elongation and stretch elasticity and excellent appearance and is resistant to fluff and dust Crimped yarn was eagerly desired.

In view of such market demand, many studies and proposals have been made on heat-resistant crimped yarns (Patent Documents 1 to 3). Specifically, a method applying a crimping method for a general thermoplastic synthetic fiber such as nylon or polyester fiber can be used. For example, a method in which a low elastic modulus fiber is mixed with a high elastic modulus fiber such as a para-aramid fiber and crimped by an indentation method (Patent Document 4). In the case of aramid fibers, a crimped yarn produced by a false twisting method (patent document 5) or the like is known in which a heat treatment is performed using a non-contact heater heated to 390 ° C. or more and less than 460 ° C., followed by a relaxation heat treatment. It is. However, in any of the known methods, production of high-quality crimped yarn having a good stretch elongation rate and elastic modulus; deterioration of the strength due to heating, change in color tone, yarn quality degradation such as fluffing or yarn breakage From the viewpoint of ease of process management, simplicity of equipment, excellent productivity, low cost, etc., all the technical problems to be overcome are solved together However, the present situation is that a heat-resistant crimped yarn having a quality that does not deteriorate the physical properties of the constituent fibers and has an excellent stretch / elongation rate has not been commercialized yet.
JP-A-48-19818 (Claim 1) JP-A-53-114923 (Claim 1) JP-A-3-27117 (Claim 1) JP-A-1-192839 (Claim 1) JP-A-6-280120 (Claim 1)

  A multifilament yarn with a soft feel and appearance without losing the excellent properties such as heat resistance, flame retardancy, strength or elastic modulus inherent in high-performance fibers, and having a kink band that is less likely to generate fuzz and dust An object of the present invention is to provide a bulky entangled yarn characterized by having a loop or a tarmi on the yarn surface. Another object of the present invention is to provide a method for producing a bulky entangled yarn that is practical in terms of productivity, equipment, cost, and the like. Furthermore, the present invention is (a) excellent in heat resistance, mechanical strength and appearance, (b) fits well to a body such as a hand and has good workability, (c) is less likely to generate fluff and dust, (d ) An object of the present invention is to provide a human body protector made of woven or knitted fabric having advantages in industrial production such as easy process control, excellent productivity and low cost.

  As a result of intensive studies and studies on the above problems, the present inventors have succeeded in developing a bulky entangled yarn. More specifically, the present inventors have succeeded in developing a bulky entangled yarn that is composed of a multifilament yarn having a kink band and has a loop and a tarmi on the yarn surface, It was discovered that the various problems of the developed products can be solved at once. Further studies have been made to complete the present invention.

That is, the present invention
(1) A bulky entangled yarn comprising at least a part of a multifilament yarn having a kink band and having a loop or a tarmi on the yarn surface;
(2) The bulky entangled yarn according to (1), wherein the single yarn constituting the multifilament yarn has a plurality of bent portions and has a kink band at or around the bent portions. The bulk height X (fold) of the bulky entangled yarn is obtained from the following formula (A), and the obtained X (fold) satisfies the range represented by the following formula (B) and / or the bulky entangled yarn The bulky entangled yarn according to (1) or (2), wherein the elongation at break is 5 to 50%,
X = a / b (B)
X> 1.10 ... (b)
(Here, X (times) represents the bulk height of the bulky entangled yarn, a represents the diameter (mm) of the bulky entangled yarn, and b represents the calculated diameter (mm) of the bulky entangled yarn.)
(4) The bulky entangled yarn according to any one of (1) to (3), wherein the multifilament yarn contains high-strength fibers at least in part.
(5) The bulky entangled yarn according to (4), wherein the high strength fiber is an aramid fiber,
(6) The bulky entangled yarn according to any one of (1) to (5), wherein the single yarn of the multifilament yarn is entangled with one or more fluids selected from air, steam, and water. ,
(7) The multifilament yarn is one or more composite fibers selected from the group consisting of wholly aromatic polyamide fibers, wholly aromatic polyester fibers, heterocyclic high-performance fibers, polyvinyl alcohol fibers, and ultrahigh molecular weight polyethylene fibers. The bulky entangled yarn according to any one of (1) to (3),
(8) A method for producing a bulky entangled yarn, wherein a single yarn of a multifilament yarn having a kink band at least partially is entangled with a feed rate (Fa) (%) satisfying the following formula using a fluid: ,
5 ≦ Fa ≦ 60
(9) A woven or knitted fabric comprising the bulky entangled yarn according to (1),
(10) The woven or knitted fabric according to (9), which is a human body protector,
About.

  Without loss of excellent properties such as heat resistance, flame retardancy, strength or elastic modulus inherent in high-performance fibers, it has good stretch elongation and elasticity and excellent appearance, and generates fluff and dust It is possible to provide a bulky entangled yarn that is composed of a multifilament yarn having a kink band which is difficult to be formed and has a loop or a tarmi on the yarn surface. In addition, the present invention can provide a practical method for producing a bulky entangled yarn in terms of productivity, equipment, cost, and the like. Furthermore, the present invention is (a) excellent in heat resistance, mechanical strength and appearance, (b) fits well to a body such as a hand and has good workability, (c) is less likely to generate fluff and dust, (d ) It is possible to provide a human body protector made of a woven or knitted fabric having advantages in industrial production such as easy process control, excellent productivity, and low cost.

  The best mode for carrying out the present invention will be described below.

  The present invention relates to a bulky entangled yarn comprising a multifilament yarn having a kink band and having a loop or a tarmi on the yarn surface. The multifilament yarn in the present invention includes (a) a multifilament yarn having a single type of kink band, (b) a multifilament yarn comprising a multifilament yarn having two or more types of kink bands, or (c) a kink band. The multifilament yarn may be either a multifilament yarn having or including a multifilament yarn having no kink band. The ratio of the multifilament yarn having a kink band to the multifilament yarn not having a kink band is usually about 1: (0 to 0.8) by weight.

  The kink band in the present invention refers to a concavo-convex portion or a node, a twist, a crack or the like of a single yarn having a length of about ± 3% or more of the average diameter of the single yarn periodically scattered in the length direction of the single yarn. The single yarn constituting the multifilament yarn can be generated by bending or applying a strong twist in a thermal atmosphere. By generating a kink band having the above shape on a single yarn constituting the multifilament yarn, the texture and bulkiness of the multifilament yarn can be dramatically improved. The external appearance model figure (refer FIG. 1) of the single yarn side which comprises the multifilament yarn which generated the kink band is shown. Therefore, the multifilament yarn having a kink band in the present invention means a yarn bundle composed of a large number of single yarns having the kink band shape described above. Here, the phase of the kink band between each single yarn may be the same or may be shifted. Thus, by giving a kink band to a single yarn, the multifilament yarn comprised by these many single yarns becomes bulky. In the single yarn kink band according to the present invention, the number of kink bands is usually about 2 times / inch to 10 times / inch, preferably 3 times / inch to 6 times / inch. If the number of kink bands is less than 2 times / inch, the effect of bulkiness cannot be obtained, and no difference is seen in the bulkiness compared to the multifilament yarn having no kink band. Further, when the number of kink bands exceeds 10 times / inch, the productivity is lowered in the following multifilament yarn entanglement step. The single yarn constituting the bulky entangled yarn of the present invention preferably has a plurality of bent portions. The kink band exists at or around the bend. A kink band is imparted to a single yarn by, for example, adding a twist to a multifilament yarn, then performing heat setting with high-temperature high-pressure steam or high-temperature high-pressure water at about 130 to 220 ° C., and then untwisting the twist , A method of false twisting using a non-contact heater heated above the decomposition start temperature of the multifilament yarn, followed by a relaxation heat treatment. Is formed, and a bent portion is formed. The kink band is an indentation method (stiffening method) in which the temperature of the multifilament yarn is kept at about 60 to 100 ° C. and the multifilament yarn is buckled under a state of containing about 10% or more of moisture to give a crimped form (stud. (Finging box method) or the like. In this case, a bent portion is also usually formed. As a preferable example, for example, the multifilament yarn is attached to a kink band applicator (for example, manufactured by Takehara Machinery Laboratories) under conditions of a temperature of about 80 to 100 ° C. and a relative humidity of about 80 to 100%. A bent part can be easily given to the single yarn to be formed together with the kink band.

  Next, by interlacing each single yarn of the multifilament yarn imparted with bulkiness by being composed of a large number of single yarns having a kink band, Further loops and tarmi can be generated to produce a bulky entangled yarn (see FIG. 2) according to the present invention. The single yarns of the multifilament yarn can be entangled with each other based on a method known per se, such as spraying fluid through the fine filaments of the entanglement nozzle. In this case, one or more kinds of fluids selected from air, steam, and water (however, other cases are preferable to water alone) can be used. As the entanglement nozzle, either a normal rectification entanglement nozzle type or a turbulent entanglement nozzle type may be used, and it is preferable to use a turbulent entanglement nozzle type in which loops and tarmi are likely to occur. The pressure of the fluid such as compressed air supplied to the entanglement nozzle varies depending on the type of multifilament yarn, fineness, number of single yarns, single yarn fineness, etc., but cannot generally be said, but usually about 0.2 to 1.2 MPa, preferably Is about 0.4 to 1.0 MPa. In addition, a liquid such as water may be applied to the multifilament yarn in advance immediately before the fluid is blown through the entanglement nozzle to the multifilament in order to enhance the generation of the loop and the tarmi.

In the present invention, the bulk height of a bulky entangled yarn which is a multifilament yarn composed of a single yarn having a kink band and has a loop or a tarmi on the surface of the multifilament yarn is usually about 1.1 ( Times) or more. The bulk height may be adjusted using a method known per se by adjusting the type of fluid supplied to the entanglement nozzle, the pressure of the fluid, the feed rate, and the like. The bulk height X (times) is expressed by X = a / b. Here, X (fold) means the bulk height of the bulky entangled yarn, and a means the diameter (mm) of the bulky entangled yarn, but with five bulky entangled yarns (15 in the case of spun yarn) Fixing to a 40 cm / twisted yarn inspection machine, giving 40 times / 40 cm twist, measuring the diameter (mm) of the center of the twisted yarn 5 times with a micrometer, and expressing the average value, b is the calculated diameter (mm ). The calculated diameter is represented by 2 × 5 (decitex / 10000 × 10 ³ × specific gravity × π) ^1/2 . (However, decitex in the formula means decitex of bulky entangled yarn, specific gravity means the specific gravity of the fiber material of bulky entangled yarn. In the case of spun yarn, decitex in the formula represents decitex of spun yarn, and specific gravity is the spun yarn This means the specific gravity of the fiber material, and the calculated diameter is represented by 2 × 15 (decitex / 10000 × 10 ³ × specific gravity × π) ^1/2 .

  The production process of the bulky entangled yarn according to the present invention includes a step of imparting a kink band to the multifilament yarn and a step of entanglement of the single yarn constituting the multifilament yarn. The two steps may be performed continuously.

  In the present invention, the cut elongation of a bulky entangled yarn, which is a multifilament yarn composed of a single yarn having a kink band and has a loop or a tarmi on the surface of the multifilament yarn, is usually about 5 to 50. %, Preferably about 8-30%. When the cut elongation is less than about 5%, productivity in a subsequent process, for example, a knitting process is lowered, and the surface layer of the woven or knitted article becomes uneven, and the appearance of the woven or knitted article becomes dirty. When the cut elongation exceeds about 50%, the loop and the tarmi generated in the multifilament yarn become too large, and the unraveling property of the bulky entangled yarn from the package wound with the bulky entangled yarn deteriorates. Frequently occur, and workability and productivity are greatly reduced. For example, when trying to adjust the cut elongation of bulky entangled yarns to about 5%, the feed rate (Fa) (%) is reduced although there are some deviations depending on the type of fiber used, fineness, number of single yarns, etc. By setting it in the vicinity of 5%, the cutting elongation can be adjusted to about 5%. Similarly, for example, when the cut elongation of a bulky entangled yarn is to be adjusted to about 50%, although there are some deviations depending on the type of fiber used, the fineness, the number of single yarns, etc., the feed rate (Fa) ( %) Is set to about 50%, the cutting elongation can be adjusted to about 50%. In this way, for example, when trying to adjust the cutting elongation of a bulky entangled yarn to about 5 to 50%, although there is some deviation depending on the type of fiber used, the fineness, the number of single yarns, etc., the feed rate ( By setting (Fa) (%) in the vicinity of about 5 to 50%, the cutting elongation can be adjusted to the above range of about 5 to 50%. There is a proportional relationship between the feed rate (Fa) and the cutting elongation in this way, but the values for the feed rate (Fa) and the cutting elongation are not exactly the same. Needless to say, it is necessary to finely adjust the feed rate (Fa) while confirming the cutting elongation of the bulky entangled yarn produced by measurement. In the process of entanglement of the single yarn constituting the multifilament yarn, the multifilament yarn having the kink band is usually supplied to the entanglement nozzle via the feed roller, and after the single yarn constituting the multifilament yarn is entangled. Then, it is wound on a package via a delivery roller. As will be described later, when the multifilament yarn is composed of two or more components, the multifilament yarn composed of two or more components may be supplied to the entanglement nozzle via the same feed roller. Multifilaments may be fed to the entanglement nozzle via separate feed rollers. When the multifilament yarn is composed of two or more components, the feed rate (Fa) (%) may be the same or different in different feed rollers. In this case, however, the feed rate (Fa) (%) satisfies the range of about 5 to 60%. Here, the feed rate (Fa) (%) is obtained from (A−B) / B × 100 (%). Here, A represents the surface speed (m / min.) Of the feed roller, and B represents the surface speed (m / min.) Of the delivery roller.

  As the multifilament yarn in the present invention, wholly aromatic polyamide fiber, wholly aromatic polyester fiber (for example, Kuraray Co., Ltd., Vectran (R)), heterocyclic high-performance fiber (for example, Toyobo Co., Ltd., Zyron (R)), Examples thereof include heat-resistant high-performance fibers such as polybenzimidazole fibers, polyamideimide fibers (for example, Kelmer (R) manufactured by Rhone-Poulenc) and polyimide fibers. The wholly aromatic polyamide fibers include meta-aramid fibers and para-aramid fibers. Examples of the meta-aramid fiber include meta-type wholly aromatic polyamide fibers such as polymetaphenylene isophthalamide fiber (for example, Nomex (R) manufactured by DuPont). Examples of the para-aramid fiber include polyparaphenylene terephthalamide fiber (for example, Kevlar (R) manufactured by Toray DuPont Co., Ltd.) and copolyparaphenylene-3,4'-diphenyl ether terephthalamide fiber (for example, manufactured by Teijin Limited, Para-type wholly aromatic polyamide fibers such as Technora (R)). In addition to the above heat-resistant high-performance fibers, examples of the multifilament yarn in the present invention include fibers that are slightly inferior in heat resistance to the above-mentioned heat-resistant high-performance fibers but have excellent tensile strength. Specific examples include ultra high molecular weight polyethylene fibers (for example, Dyneema (R) manufactured by Toyobo Co., Ltd.), polyvinyl alcohol fibers (for example, Kuraray KII (R) (high strength type) manufactured by Kuraray Co., Ltd.), and the like. . In the present invention, the above heat-resistant high-performance fiber and ultra high molecular weight polyethylene fiber (for example, Toyobo Co., Ltd., trade name Dyneema) and polyvinyl alcohol fiber (for example, Kuraray Co., Ltd., trade name Claron KII (high strength type)) Are referred to as high performance fibers. Among the above-mentioned high-performance fibers, para-aramid fibers (for example, Toray DuPont, Kevlar (R), or Teijin Limited, Technora (R)), wholly aromatic polyester, are used as the multifilament yarn according to the present invention. Fibers (for example, Kuraray Co., Ltd., Vectran (R)), heterocyclic high-performance fibers (for example, Toyobo Co., Ltd., Zylon (R)), ultrahigh molecular weight polyethylene fibers (for example, Toyobo Co., Ltd., Dyneema (R)) and Polyvinyl alcohol fibers (for example, Kuraray KII (R) (high strength type) manufactured by Kuraray Co., Ltd.) are preferable. In the present invention, the multifilament yarn includes a high strength fiber in at least a part thereof. In this case, the high strength fiber is an aramid fiber or the like. In addition, the multifilament yarn according to the present invention may be one type or two or more types of composite fibers selected from the group consisting of the above-described high-performance fibers. Furthermore, it can also be used as a composite yarn by blending with other known fibers such as polyester and nylon, and twisting.

The single yarn fineness of the high-performance fiber used in the present invention is usually about 0.02 to 2 tex, preferably about 0.05 to 0.6 tex, more preferably about 0.08 to 0.5 tex. The bulky entangled yarn according to the invention is preferable from the viewpoint of flexibility and ease of manufacture. The total fineness of the high-performance fiber used in the present invention is not limited as long as it is a thickness capable of processing twisted yarn and knitted fabric, but in view of the twisted yarn and knitted fabric process in the production process of bulky entangled yarn, it is usually about 5-5000 tex is preferred. Moreover, the cross section of the single yarn which comprises the multifilament yarn used for this invention is not specifically limited, Any of a round cross section, an atypical cross section, a hollow cross section, etc. may be used. Furthermore, the single yarns constituting the multifilament yarn may have different diameters or cross-sectional shapes. The fineness is JIS
It is expressed in tex (tex) defined in L 1013 (1999). For example, 1 tex indicates that a fiber having a length of 1000 m has a mass of 1 g, and 10 tex indicates that a fiber having a length of 1000 m has a mass of 10 g. The greater the numerical value represented by tex, the greater the fiber thickness.

  The present invention provides a woven or knitted fabric having a bulky and spun-like texture comprising the bulky entangled yarn. Examples of the woven fabric include plain weave, satin weave, twill weave, horizontal stripe weave, tangle weave or oblique weave. Examples of the knitted fabric include flat knitting, flat knitting such as rubber knitting or pearl knitting, vertical knitting such as single denby knitting, or lace knitting. In the present invention, a known weaving method or knitting method may be used. In the case of a woven fabric, it can be produced by using a known loom according to each weaving method, for example, a jet loom (air jet loom, water jet loom), a sulzer loom, a lapia loom, or the like. In the case of a knitted fabric, it can be produced using a knitting machine known per se according to each knitting method, for example, a Melias knitting machine (flat knitting machine, vertical knitting machine) or the like. The woven or knitted fabric may be composed only of the above-described bulky entangled yarn, or may be a woven fabric or a knitted fabric with other fiber yarns. However, when the knitted or knitted fabric is the above-mentioned mixed woven fabric or mixed knitted fabric, the bulky entangled yarn according to the present invention is about 5% or more, preferably about 25% or more, more preferably about 50% or more of the fiber component. preferable. The fiber yarn other than the bulky entangled yarn is not particularly limited, and those known per se may be used.

The textile product using the woven or knitted fabric knitted and knitted with the above-described bulky entangled yarn according to the present invention is not particularly limited, for example, gloves such as heat-resistant safety gloves, fire clothes, racing suits for automobile racing, Examples include clothing products, heat-resistant materials such as heat-resistant dust filters, ropes, tire cords, etc., in situations where there is a high risk of exposure to flames and high heat, such as steelmaking, welding or painting work clothes. The textile product can be easily produced according to a method known per se. For example, a commercially available computer glove knitting machine SFG or SJF (manufactured by Shima Seiki Co., Ltd.) is employed for convenience. When using the fiber product, the fiber product may be used alone or in combination with other products having heat resistance or flame retardancy. In addition, a process known per se may be performed. For example, a glove knitted using the yarn including the bulky entangled yarn according to the present invention may be used for various operations as it is, or a part of the glove, particularly the outer surface of the palm side or the entire outer surface of the glove. A resin may be applied to the resin. Examples of the resin for this purpose include vinyl chloride resin, latex, urethane resin, natural rubber or synthetic rubber, and the strength of the gloves is increased by application of the resin, and it becomes difficult to slip when grasping an object. The resin coating may be performed according to a method known per se. Further, a rubber glove may be further put on a glove knitted using the bulky entangled yarn according to the present invention or a yarn containing the bulky entangled yarn. Since the bulky entangled yarn of the present invention has loops and tarmi, it has a spun-like texture when it is made into a woven or knitted fabric. For example, when a glove is used, the feeling of wearing is improved and the workability is improved by having a spun-like texture.
〔Example〕

Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited thereto.
The evaluation method of each physical property value was based on the following method.
Cutting elongation: Measured based on JIS L 1013 (1999) chemical fiber filament yarn test method.
Coefficient of friction: Using a surface measuring machine type HEIDON-14DR, a sample obtained by cutting a glove into a cloth shape on a 65 mm x 65 mm ASTM flat indenter was fixed with double-sided tape, and pressed on an aluminum plate at a pressing load of 500 g and a speed of 1000 mm / min. The static friction coefficient and the dynamic friction coefficient were calculated from the resistance value when the was moved.
Cutting resistance: A specified blade (American Safty Razar Co., Part No. 88-0121) was used according to ASTM F1790-97. The measured value is indicated by N (Newton). When the sample is placed on the specified sample stage and the specified blade is moved 1 inch horizontally, it is expressed by the load necessary for the blade to cut and penetrate the sample. It is. The larger the value, the harder it is to cut.
The knitting property of the glove and the appearance of the glove were evaluated by a sensory test.

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarns: 1000, Kevlar manufactured by Toray DuPont Co., Ltd.) using a kink band applying device (manufactured by Takehara Machinery Laboratory, Ultra High Speed Crimper) (R)) While applying steam of 95 ° C. or higher to the single yarn constituting (R)), the para-aramid multifilament yarn was run at a speed of 400 m / min to give a kink band, and then dried and wound to be bulky. I got a thread. The resulting bulky yarn is blown with air through the pores of the entangled nozzle, has a bent part and a kink band, and a bulky entanglement with a cut elongation of 6% that has a single yarn loop and a talmi on the surface of the multifilament yarn. I got a thread. The feed rate (Fa) (%) was 5.5%. Here, the pressure of the compressed air supplied to the entanglement nozzle was 0.6 MPa. Using the obtained bulky entangled yarn, a glove was created by a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Seisakusho Co., Ltd.). The knitting properties of gloves, appearance of gloves, texture, fluff removal conditions, etc. were evaluated (see Table 1).

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarns: 1000, Kevlar manufactured by Toray DuPont Co., Ltd.) using a kink band applying device (manufactured by Takehara Machinery Laboratory, Ultra High Speed Crimper) (R)) While applying steam of 95 ° C. or higher to the single yarn constituting (R)), the para-aramid multifilament yarn was run at a speed of 400 m / min to give a kink band, and then dried and wound to be bulky. I got a thread. The resulting bulky yarn is blown with air through the pores of the entangled nozzle, has a bent portion and a kink band, and has a bulky entangled yarn of 8% elongation with a single filament loop and talmi on the surface of the multifilament yarn. Got. The feed rate (Fa) (%) was 9.5%. Here, the pressure of the compressed air supplied to the entanglement nozzle was 0.6 MPa. Using the obtained bulky entangled yarn, a glove was created by a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Seisakusho Co., Ltd.). The knitting properties of gloves, the appearance of gloves, texture, and the condition of fluffing were evaluated. Furthermore, the cutting property was evaluated and the friction coefficient was measured (see Table 1).

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarns: 1000, Kevlar manufactured by Toray DuPont Co., Ltd.) using a kink band applying device (manufactured by Takehara Machinery Laboratory, Ultra High Speed Crimper) (R)) While applying steam of 95 ° C. or higher to the single yarn constituting (R)), the para-aramid multifilament yarn was run at a speed of 400 m / min to give a kink band, and then dried and wound to be bulky. I got a thread. The resulting bulky yarn is blown with air through the pores of the entangled nozzle, has a bent part and a kink band, and a bulky entanglement with a cut elongation of 12% that has a single yarn loop and talmi on the surface of the multifilament yarn. I got a thread. The feed rate (Fa) (%) was 14.5%. Here, the pressure of the compressed air supplied to the entanglement nozzle was 0.6 MPa. Using the obtained bulky entangled yarn, a glove was created by a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Seisakusho Co., Ltd.). The knitting properties of gloves, appearance of gloves, texture, fluff removal conditions, etc. were evaluated (see Table 1).

Comparative Example 1

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarns: 1000, Kevlar manufactured by Toray DuPont Co., Ltd.) using a kink band applying device (manufactured by Takehara Machinery Laboratory, Ultra High Speed Crimper) (R)) While applying steam of 95 ° C. or higher to the single yarn constituting (R)), the para-aramid multifilament yarn was run at a speed of 400 m / min to give a kink band, and then dried and wound to be bulky. I got a thread. The obtained bulky yarn was cut into about 51 mm, and a spun yarn was prepared using this by a method known per se. Gloves were produced using a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Co., Ltd.) using the two spun yarns of 20th-hand twin yarns obtained. The knitting properties of gloves, the appearance of gloves, texture, and the condition of fluffing were evaluated. Furthermore, cutting resistance and a friction coefficient were measured (refer Table 1).

Comparative Example 2

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarn: 1000, manufactured by Toray DuPont Co., Ltd., Kevlar (R)) is blown through the pores of the entangled nozzle so that the surface of the multifilament yarn is Yarn loops and talmi were produced to obtain entangled yarns. Here, the pressure of the compressed air supplied to the entanglement nozzle was 0.6 MPa. The feed rate (Fa) (%) was 9.5%. Using the obtained entangled yarn, a glove was created by a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Seisakusho Co., Ltd.). The knitting properties of gloves, appearance of gloves, texture, fluff removal conditions, etc. were evaluated (see Table 1).

Comparative Example 3

  Para-aramid multifilament yarn (total fineness: 1670 decitex, number of single yarns: 1000, Kevlar manufactured by Toray DuPont Co., Ltd.) using a kink band applying device (manufactured by Takehara Machinery Laboratory, Ultra High Speed Crimper) (R)) While applying steam of 95 ° C. or higher to the single yarn constituting (R)), the para-aramid multifilament yarn was run at a speed of 400 m / min to give a kink band, and then dried and wound to be bulky. I got a thread. Using the obtained bulky yarn, a glove was created by a 10 gauge computer glove knitting machine SFG (manufactured by Shima Seiki Seisakusho Co., Ltd.). The knitting properties of gloves, appearance of gloves, texture, fluff removal conditions, etc. were evaluated (see Table 1).

（記号の意味）：製編成について、◎は優れている、○は良好である、△は普通以
下である、×は製編できない、ことを表わす。
外観について、◎は非常にきれいである、○はきれいである、△
は普通以下である、×はきたない、ことを表わす。
風合いについて、○は良好である、△は普通以下である、×は悪い、
ことを表わす。
毛羽落ちについて、◎は全く落ちない、×は多く落ちる、ことを表わ
す。

(Meaning of symbols): For knitting, ◎ is excellent, ○ is good, △ is normal
Below, × indicates that we cannot knitting.
Regarding appearance, ◎ is very beautiful, ○ is beautiful, △
Is usually less than or equal to x.
Regarding the texture, ○ is good, △ is below normal, × is bad,
Represents.
For fluffing, ◎ means that it will not fall off at all, × means that it will fall a lot.
The

  As can be seen from Table 1, the gloves knitted from the bulky entangled yarns produced according to Examples 1 to 3 according to the present invention were compared with the gloves knitted from the spun yarns produced according to Comparative Example 1, and The knitting property and the appearance of the glove are equivalent or better, and the glove fluff comes off significantly improved. The glove knitted from the bulky entangled yarn created by Example 2 has only the glove knitted from the entangled yarn produced by Comparative Example 2 and the kink band produced by Comparative Example 3, When compared with a glove knitted from a bulky yarn that has not been entangled with the fluid through the entanglement nozzle, it can be seen that the knitting ability of the glove and the appearance quality of the glove are very excellent. In particular, in the case of a bulky yarn that has only the kink band created in Comparative Example 3 and is not entangled with the fluid through the entanglement nozzle, knitting is impossible. That is, when the bulky entangled yarn according to the present invention is used for a glove, it is possible to overcome the problem of fluff falling off from the conventional glove and improve the appearance quality of the glove.

Model drawing of a single yarn constituting a multifilament yarn having a kink band viewed from the side Model diagram of a bulky entangled yarn according to the present invention obtained by generating further loops and tarmi by tangling each single yarn of a multifilament yarn composed of a large number of single yarns having kink bands from the side

Explanation of symbols

1 Single yarn
2 Kink Band

Claims (10)

  A bulky entangled yarn comprising a multifilament yarn having a kink band at least partially and having a loop or a tarmi on the yarn surface.   The bulky entangled yarn according to claim 1, wherein the single yarn constituting the multifilament yarn has a plurality of bent portions, and has a kink band at or around the bent portions. A bulky entangled yarn, wherein the bulk height X (times) of the bulky entangled yarn is obtained from the following formula (A), and the obtained X (times) satisfies the range represented by the following formula (B); and / or The bulky entangled yarn according to claim 1 or 2, wherein the cut elongation of the bulky entangled yarn is 5 to 50%.
X = a / b (B)
X> 1.10 ... (b)
(Here, X (times) represents the bulk height of the bulky entangled yarn, a represents the diameter (mm) of the bulky entangled yarn, and b represents the calculated diameter (mm) of the bulky entangled yarn.)   The bulky entangled yarn according to any one of claims 1 to 3, wherein the multifilament yarn includes a high-strength fiber at least partially.   The bulky entangled yarn according to claim 4, wherein the high-strength fiber is an aramid fiber.   The bulky entangled yarn according to any one of claims 1 to 5, wherein the single yarn of the multifilament yarn is entangled with one or more fluids selected from air, steam and water.   The multifilament yarn is one or more composite fibers selected from the group consisting of wholly aromatic polyamide fibers, wholly aromatic polyester fibers, heterocyclic high-performance fibers, polyvinyl alcohol fibers, and ultrahigh molecular weight polyethylene fibers. The bulky entangled yarn according to any one of claims 1 to 3. A method for producing a bulky entangled yarn, wherein a single yarn of a multifilament yarn having a kink band at least partially is entangled at a feed rate (Fa) (%) satisfying the following formula using a fluid.
5 ≦ Fa ≦ 60   A woven or knitted fabric comprising the bulky entangled yarn according to claim 1. The woven or knitted fabric according to claim 9, which is a human body protector.

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