Woven fabric

Abstract

To provide a knitted or woven fabric which improves dust emission property and mounting property to be defects of yarn knitted or woven fabric and further is excellent in tensile strength and wear resistance while making the most of cut resistance to be an advantage of a conventional yarn knitted or woven fabric.SOLUTION: A knitted or woven fabric is obtained by interknitting or interweaving a fiber yarn (A) which is composed of only fluid jet processed organic fibers and has fineness of 220 to 1700 dtex : 10 to 70 mass% and a fiber yarn (B) which is composed of organic fibers having a spinning-processed short fiber bundle : 90 to 30 mass%.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a knitted or woven fabric obtained by interweaving fluid jet textured yarn and spun yarn. [Background technology]

[0002] Among organic fibers, knitted and woven fabrics (gloves, arm covers, aprons, etc.) made from high-strength fibers such as fully aromatic polyamide fiber (aramid fiber) and fully aromatic polyester fiber are resistant to cutting with blades, and therefore have revolutionary cut resistance compared to conventional gloves, arm covers, aprons, etc. made from cotton, etc. For this reason, they have been used as protective clothing to protect workers' hands and bodies from cut injuries in manufacturing sites that handle burred sheet metal products and fragile glass products, as well as in garbage collection sites that handle general garbage that may contain metal or glass fragments.

[0003] However, workers and the like are strongly demanding even safer and higher quality protective clothing. For example, when wearing protective gloves, workers generally work with only one pair of gloves, and since additional cut resistance is required depending on the type of work and gloves need to be changed due to soiling, workers often wear work gloves over the same type of gloves, sewn leather gloves, rubber gloves, or the like. Therefore, there is a demand for gloves that are lightweight, easy to wear (easy to put on and take off), and comfortable to wear (easy to work in).

[0004] Generally, knitted and woven fabrics made with high-strength spun yarns have excellent cut resistance, but the high stiffness of the fibers makes them feel stiff, and the stiff fiber ends can irritate the wearer, causing discomfort such as a prickly feeling. Additionally, fibril fibers can fall off during wear, generating dust. Therefore, for knitted and woven fabrics made with high-strength spun yarns, cut resistance, wearability, and dust generation are mutually related.

[0005] That is, since high-strength fibers generally become more difficult to cut as the single yarn fineness increases, increasing the single yarn fineness is thought to be effective in improving the cut resistance of knitted and woven fabrics, but the use of high-strength fibers with large fineness dramatically increases the bending stiffness of the staple fibers. Therefore, simply using a spun yarn with large fineness will only result in a knitted and woven fabric that is cut-resistant but has a strong itchy feel. Conversely, using a spun yarn with a small single yarn fineness will somewhat eliminate the itchy feel of the knitted and woven fabric, but it will be difficult to take advantage of the cut resistance that is a feature of high-strength fibers.

[0006] Patent Document 1 discloses cut-resistant gloves knitted from a single or multiple strands of fluid-jet-processed organic fiber yarn with a fineness of 440 to 1,800 dtex (but no elastic fiber), and which reduce the amount of dust generated from the yarn during yarn production and knitting. These cut-resistant gloves have high cut resistance, low dust generation, and good fit, hardness, and prickly feeling. However, Patent Document 1 neither discloses nor suggests interwoven or paralleled spun yarn with fluid-jet-processed fluid-processed yarn, or the use of paralleled yarn to produce knitted or woven fabrics.

[0007] Patent Document 2 discloses that a 1,670 dtex / 1,250 f (single filament fineness 1.3 dtex) polyketone fiber multifilament yarn (tensile strength 18 cN / dtex) was cut to a fiber length of 51 mm to produce a spun yarn with a cotton count of 20 s / 1, which was then doubling with a Z-twisted 280 dtex polyketone fiber multifilament yarn, which was then S-twisted (500 T / m) to produce a ply yarn, and six of these ply yarns were used to make a doubling yarn, resulting in gloves that were superior in softness and wearability and had a cut resistance of 9 N in accordance with JIS-T-8052 (see Example 1). Patent Document 2 also suggests the use of a fluid-jet-textured yarn as the polyketone fiber multifilament yarn, but the document does not disclose the properties of the fluid-jet-textured yarn or evaluation results of the gloves. Furthermore, the specifications of the loom and knitting machine must also be taken into consideration, making it difficult to predict the properties of the knitted or woven fabric (particularly dust generation) from the disclosure of Patent Document 2.

[0008] Protective gloves knitted with fluid-processed yarns of ultra-high molecular weight polyethylene fibers or polyketone fibers, which are relatively resistant to fuzzing, are also known (for example, Patent Document 3). However, in gloves knitted with high-strength fibers, cut resistance and low dust generation are in a contradictory relationship, and are also affected by the yarn material (yarn properties), processing method (yarn properties), glove knitting method, etc. For this reason, it is currently difficult to obtain gloves made with spun yarn that combine cut resistance and low dust generation and also provide a satisfactory fit (wearability) when worn. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 2020-158919 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-308772 [Patent Document 3] Japanese Patent Application Laid-Open No. 2009-079309 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made in view of the background of the prior art, and aims to provide a knitted or woven fabric that takes advantage of the cut resistance that is an advantage of conventional spun yarn knitted or woven fabrics, while improving the drawbacks of spun yarn knitted or woven fabrics in terms of dust generation and wearability, and further has excellent tensile strength and abrasion resistance. [Means for solving the problem]

[0011] In order to solve the above problems, the present invention employs the following means. That is, the present invention is Overfeed rate of 3-12% A fiber yarn (A) having a fineness of 220 to 1,700 dtex and consisting only of fluid-jet-processed organic fibers; A yarn (B) consisting of only organic fibers spun into short fiber bundles, Interwoven A woven or knitted fabric, The organic fibers constituting the fiber yarns (A) and (B) are para-aramid fibers, The fiber yarn (B) is a two-ply spun yarn having a single yarn twist coefficient (K 1 ) is 2.0 to 4.0, The woven or knitted fabric is composed of 10 to 70 mass % of fiber yarn (A) and 90 to 30 mass % of fiber yarn (B). The present invention provides a knitted fabric characterized by the above-mentioned. [Effects of the Invention]

[0012] According to the present invention, by interweaving an organic fiber yarn having a specific fineness made only of fluid-jet-processed organic fibers with an organic fiber yarn made of organic fibers spun from short fiber bundles, it is possible to provide a knitted or woven fabric that is not itchy and has excellent cut resistance and low dust generation, as well as excellent tensile strength and abrasion resistance.

[0013] In the knitted fabric of the present invention, the number of dust particles with a particle size of 0.1 μm or more was reduced by 40% compared to a knitted fabric made of spun yarn alone, demonstrating a significant improvement, while maintaining the cut strength of the knitted fabric, making it possible to provide a mixed knitted fabric that does not impair the properties of conventional spun yarn knitted fabrics. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram showing an example of fluid jet processing of organic fiber yarn. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention will be described in detail below. The knitted or woven fabric of the present invention is characterized by being formed by interweaving a fiber yarn (A) having a fineness of 220 to 1,700 dtex and consisting solely of fluid-jet-processed organic fibers with a fiber yarn (B) consisting solely of organic fibers spun into short fiber bundles. However, the organic fibers constituting the fiber yarns (A) and (B) do not contain elastic fibers. Gloves knitted with yarns containing elastic fibers have the advantage of providing an excellent fit when worn, but have issues in terms of quality control.

[0016] <Fiber yarn (A)>

[0017] [Organic fiber] In the above-mentioned fiber yarn (A), the organic fiber can be appropriately selected from known fibers, but as a raw yarn characteristic, a high-strength continuous fiber having a tensile strength of 17.5 cN / dtex or more measured in accordance with JIS L 1013 8.5 is preferred. If the tensile strength is less than 17.5 cN / dtex, it tends to be difficult to impart high abrasion resistance to the fiber yarn. The tensile strength of the organic fiber is preferably 17.5 to 35 cN / dtex, more preferably 20 to 35 cN / dtex.

[0018] Examples of the organic fibers mentioned above include para-aramid fibers, meta-aramid fibers, wholly aromatic polyester fibers, polyparaphenylene benzobisoxazole fibers, polyketone fibers, polyamideimide fibers, ultra-high molecular weight polyethylene fibers, and high-strength vinylon fibers, from the viewpoints of tensile strength and abrasion resistance. One type of organic fiber may be used alone, or two or more types may be used in combination. Among these materials, para- and meta-aramid fibers and ultra-high molecular weight polyethylene fibers are preferred because of their excellent wearing comfort, and para-aramid fibers are particularly preferred because of their excellent cut resistance. The aramid fibers are preferably used in an amount of 50% by mass or more, more preferably 70 to 90% by mass, and particularly preferably 100% by mass, based on the total amount of organic fibers. Meta- and para-aramid fibers may also be used in combination.

[0019] The organic fibers may be commercially available products, and examples of para-aramid fibers include polyparaphenylene terephthalamide fiber (manufactured by DuPont-Toray Co., Ltd., trade name "Kevlar" (registered trademark)) and copolyparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (manufactured by Teijin Limited, trade name "Technora" (registered trademark)). Among these, polyparaphenylene terephthalamide fiber is preferred because of its high strength, high elastic modulus, cut resistance, and excellent heat resistance.

[0020] Further, examples of wholly aromatic polyester fibers include those manufactured by Kuraray Co., Ltd. under the trade name "Vectran," examples of polyparaphenylene benzobisoxazole fibers include those manufactured by Toyobo Co., Ltd. under the trade name "Zylon," and examples of ultra-high molecular weight polyethylene fibers include those manufactured by Toyobo Co., Ltd. under the trade names "IZANAS" and "TSUNOOGA," those manufactured by DSM under the trade name "DYNEEMA," and those manufactured by Honeywell under the trade name "SPECTRA."

[0021] [Fiber yarn (A)] The fineness of the organic fiber yarn (A) is 220 to 1,700 dtex. If the fineness of the fiber yarn is less than 220, the cut resistance of the knitted or woven fabric will deteriorate if the number of paralleled yarns is extremely small, and conversely, if the number of paralleled yarns is large, the productivity of the knitted or woven fabric will deteriorate. On the other hand, if the fineness of the fiber yarn exceeds 1,700 dex, the knitting properties will deteriorate (the knitting machine cutter will be less likely to cut). The fineness of the fiber yarn is more preferably 440 to 1,700 dtex, and even more preferably 600 to 1,700 dtex.

[0022] The single fiber fineness of the organic fiber is preferably 0.1 to 10 dtex, more preferably 0.3 to 6 dtex, and particularly preferably 1.0 to 2.5 dtex. If the single fiber fineness is less than 0.1 dtex, the strength of the fiber is too weak to form gloves, while if it exceeds 10 dtex, the gloves become stiff.

[0023] The number of multifilaments is preferably 1,400 or less, more preferably 100 to 1,200, and even more preferably 200 to 1,100. When the number of multifilaments is 1,400 or less, the glove does not become too hard and cut resistance can be maintained.

[0024] [Fluid injection machining] The fiber yarn (A) is knitted from a single or multiple paralleled fiber yarns that are fluid-processed organic fibers that have been subjected to fluid jet processing. The number of paralleled fiber yarns is not particularly limited, but is usually 2 to 5, and preferably 2 to 3.

[0025] Fluid jet processing is a technology that forcibly sprays fluids such as water, steam, or air onto fibers, disrupting the fiber orientation with the flow, thereby imparting bulkiness.Organic fibers with a tensile strength of 17.5 cN / dtex or more, such as para-aramid fibers, also have a high tensile modulus, so knitted gloves tend to become stiff, but fluid jet processing can impart bulkiness without damaging the fiber surface.

[0026] An example of the fluid jet processing method for organic fibers used in the present invention is shown in Figure 1. Organic fiber yarn 1 is supplied from feed roller 2 to fluid processing nozzle 3, where it merges with a fluid supplied to the fluid processing nozzle 3 from another inlet 4, is sprayed out of the fluid processing nozzle 3, passes through delivery roller 5, and is wound onto a take-up bobbin 7. The organic fiber yarn 1 may be supplied from a single original yarn bobbin or from multiple original yarn bobbins. The organic fiber yarn may be of one type, or two or more different types of materials may be supplied to the fluid processing nozzle to be combined.

[0027] In fluid jet processing, by selecting processing conditions such as the overfeed rate, yarn diameter, nozzle shape, fluid pressure, and processing speed, a variety of textured yarns can be obtained depending on the application, from highly bulky textured yarns with loop-like fuzz to mildly bulky yarns without loop fuzz. Generally, thin yarns (150 dtex or less) are subject to strong disturbance by fluid jet processing, which can lead to the risk of fibrillation of the fiber surface in high-strength fibers such as para-aramid fibers. The organic fiber yarn of the present invention has a fineness of 220 to 1,700 dtex, which is less susceptible to disturbance by fluid jet processing, making it less likely to form loops and damage the fiber surface, resulting in a bulky textured yarn with each yarn having a wavy, sagging shape.

[0028] By processing the organic fiber yarn at an overfeed rate of 3 to 12%, more preferably 3 to 8%, and at a fluid injection pressure of 1 MPa or less, a fiber yarn suitable for the cut-resistant glove of the present invention can be obtained. Furthermore, fibrillation of the organic fiber and abrasion of the fiber surface are suppressed, and adhesion of fibril fragments and shavings to the glove is suppressed. "Fibrillation" refers to the phenomenon in which a single fiber cracks and splits into finer fibers.

[0029] In addition to the fiber yarns made of the above-mentioned high-strength organic fibers, the fiber yarn (A) may contain known fiber yarns such as regenerated fibers such as polyamide, polyester, polyacrylonitrile, polyurethane, and rayon, semi-synthetic fibers such as acetate, and synthetic fibers such as polyolefin, polyvinyl chloride, polyvinylidene chloride, and phenol. Known fibers such as nylon and polyester are preferably contained in the yarn at a ratio of less than about 50% by mass, more preferably 10 to 30% by mass, within a range that does not impair the effects of the present invention (low dust generation and cut resistance).

[0030] The number of fiber yarns (A) constituting the knitted or woven fabric may be one or more. When knitting with multiple yarns, the organic fiber yarns may be the same or different in composition, and only some of the yarns may contain fibers such as nylon or polyester.

[0031] <Fiber yarn (B)>

[0032] The fiber yarn (B) is a fiber yarn consisting solely of organic fibers spun from short fiber bundles. A single-twisted yarn of one fiber yarn or a plied yarn of multiple fiber yarns is used.

[0033] The organic fiber may be one or a mixture of two or more fibers selected from the organic fibers listed in the fiber thread (A), regenerated fibers such as rayon, and natural fibers such as cotton and hemp. Among these, the high-strength organic fibers listed in the fiber thread (A) are preferred because they can improve the tensile strength, tear strength, burst strength, abrasion resistance, and cut resistance of the fabric.

[0034] The average fiber length of the staple fibers is preferably 35 to 160 mm, more preferably 45 to 130 mm. Within this range, processing is easy when optimizing the twist coefficient of the spun yarn, and at the same time, the itchy feeling of the knitted or woven fabric can be eliminated, improving workability and wearability. In addition, to obtain good spinnability, the crimp number of the staple fibers is preferably about 3 to about 12 crimps / inch.

[0035] The single fiber fineness of the short fibers is preferably 0.8 to 10.0 dtex, more preferably 1.0 to 6.5 dtex, and particularly preferably 1.2 to 4.5 dtex. If the single fiber fineness is less than 0.8 dtex, the cut resistance measured based on the test method specified in JIS T 8052:2005 "Protective clothing - Mechanical properties - Test method for cut resistance against sharp objects" becomes insufficient.

[0036] The spun yarn used in the present invention may be produced from organic fibers by a conventional method using cotton spinning, staple spinning, or worsted spinning equipment. In this case, the fineness (count) of the spun yarn is British cotton count 30 to 70. Here, the finer the spun yarn, the larger the count number.

[0037] The spun yarn may be in the form of a single spun yarn or a two-ply spun yarn, which is made by twisting two single spun yarns together in the opposite direction to the single spun yarn. Alternatively, a triplet yarn, which is made by twisting three single spun yarns together, may be used. Among these spun yarns, two-ply yarns are preferred from the viewpoints of tensile strength that can withstand tension during knitting and excellent cut resistance of the fabric. The cotton count of the two-ply spun yarn is preferably 10 / 2s to 60 / 2s, and within this range, processability is not significantly impaired. More preferably, it is 15 / 2s to 50 / 2s, and even more preferably, it is 20 / 2s to 40 / 2s.

[0038] It is preferable to optimize the single yarn twist factor (K1) of the spun yarn and the twist numbers (T1, T2) of the single yarn and the two-ply yarn obtained by twisting the single yarn. When twisting a single spun yarn, the single yarn twist factor (K1) calculated by the following formula is preferably set in the range of 2.0 to 4.0. If the single yarn twist factor (K1) is less than 2.0, the entanglement between the staple fibers becomes too weak, and the ends of the staple fibers protrude from the spun yarn, resulting in a fabric (glove) that feels itchy. On the other hand, if the single yarn twist factor (K1) is greater than 4.0, the twist becomes too strong, resulting in increased double twist, which deteriorates processability, reduces the tensile strength of the spun yarn, and also deteriorates the feel. A more preferable single yarn twist factor (K1) is in the range of 2.5 to 3.8. The single yarn twist number (T1) is preferably 13 to 30 t / inch, more preferably 13 to 25 t / inch. The twist direction of the spun yarn single yarn may be either S or Z.

[0039] Twist Factor K 1=T / s 1 / 2 T: Number of twists (t / inch) s; Cotton count

[0040] Two single spun yarns with the above-mentioned predetermined twist (twist number T1) are aligned and then processed into a two-ply spun yarn by applying a predetermined reverse twist (twist number T2) to the double twister. The two-ply yarn final twist number (T2) is preferably 100 to 900 t / m, more preferably 150 to 800 t / m. The two-ply yarn final twist factor (K2) calculated by the above formula is preferably in the range of 2.0 to 6.0. If the two-ply yarn twist factor (K2) is less than 2.0, the ends of the staple fibers will protrude from the spun yarn, resulting in gloves with a scratchy feel. If the two-ply yarn twist factor (K2) is greater than 6.0, the two-ply yarn will be too strongly twisted, resulting in increased double twisting, which will deteriorate processability, reduce the tensile strength of the spun yarn, and also result in an inferior feel. A more preferred two-ply yarn twist factor (K2) is in the range of 2.0 to 5.0. In this case, it is desirable to twist the spun yarn so that the ratio (T2 / T1) (%) of the number of single yarn first twists (T1) to the number of two-ply yarn final twists (T2) is in the range of 30 to 95%, more preferably 50 to 90%.

[0041] The spun yarn of the present invention can be produced by conventionally known spinning methods using stapled organic fiber filaments cut to a single yarn fineness of 0.8 to 10.0 dtex. The staple is made into a sliver, which is twisted to a predetermined twist coefficient using a ring twisting machine or the like, and further twisted to a predetermined twist ratio using a double twister or the like.

[0042] Furthermore, when producing the spun yarn of the present invention, other staple fibers (e.g., cotton, rayon, polyester, nylon, etc.) may be mixed in an amount of about 30% by mass or less, as long as the effects of the present invention are not impaired. Preferably, the aramid fiber accounts for 40 to 100% of the total mass of the spun yarn, and it is particularly preferred to use para-aramid fiber at 50 to 100%.

[0043] [Knitted fabric] The knitted or woven fabric of the present invention can be obtained by interweaving the fiber yarn (A) and the fiber yarn (B), or by aligning a single or multiple threads of each and feeding the aligned threads to a knitting machine or a loom. The ratio (mass ratio) of the paralleled fiber threads (A) and (B) is preferably fiber threads (A):fiber threads (B)=10-70:90-30. If the ratio of fiber threads (A) is 10 or more, not only can the amount of dust generated be suppressed but also improved abrasion resistance can be expected, and if the ratio is 70 or less, the fabric has an appropriate thickness and is not too thin. The ratio of fiber threads (A) to fiber threads (B) is more preferably 20-60:80-40, and even more preferably 20-50:80-50.

[0044] The weight of the knitted or woven fabric is not particularly limited, but is preferably 300 to 800 g / m 2 By setting the thickness within the above range, it is possible to achieve an appropriate balance between the thickness of the fabric and cut resistance. A more preferable range is 400 to 700 g / m 2 , and more preferably 500 to 600 g / m 2 is.

[0045] In the present invention, when producing knitted fabrics such as gloves, it is preferable to feed the paralleled yarns of the fiber yarn (A) and fiber yarn (B) to a computerized glove knitting machine SFG or STJ (manufactured by Shima Seiki Mfg. Co., Ltd.) through a tension adjuster with a matte finish on the contact surface with the yarn, and then knit the fabric. After the knitting yarn is unwound from the package, the main devices present in the yarn path of the knitting machine include a yarn guide plate, a first tension adjuster, an oiling felt, a yarn breakage detection spring, and a second tension adjuster. The yarn then passes through a take-up spring and is guided to a yarn feeder, where it is finally knitted using needles. These two tension adjusters are yarn path guides that apply stable tension to the yarn, and include a washer tensor and a spring tensor.

[0046] As a surface finishing method for a yarn guide, a matte finish and a mirror finish are common. When the surface of the yarn guide that comes into contact with the yarn is matte, friction with the yarn is reduced, which makes it possible to suppress fibrillation of mainly organic fibers in the yarn guide near the package, and to suppress fragmentation of organic fiber fibrils or scraping of fiber surfaces in subsequent yarn guides.

[0047] Examples of materials for the surface of the tension adjuster that comes into contact with the yarn include metal with a matte chrome plating; metal coated with ceramics such as titanium, alumina, titanium carbide, Teflon (registered trademark), silicon, etc.; and ceramics such as titanium, alumina, zirconia, etc.

[0048] In the present invention, it is effective to use a tension adjuster, which is a yarn guide for applying tension to the yarn, with a matte surface that comes into contact with the yarn. Examples of such tension adjusters include components that have been subjected to a matte finish, or a combination of components made of matte materials (for example, a tension washer with a matte finish surface and a tensor shaft made of alumina ceramic). This has the effect of preventing the generation of large amounts of fibrils and shavings due to friction with the yarn when tension is applied to the yarn to ensure stable yarn supply. Furthermore, it is preferable to use ceramic components for other yarn guides, as this will produce even better effects.

[0049] In the present invention, by using the above yarn and further adjusting the knitting method, dust is generated by the tumbling method according to JIS B 9923, and the number of particles with a particle size of 0.1 μm or more is measured with a particle counter, and the number of particles is 12,000 particles / m per unit area of ​​the woven or knitted fabric. 3 The gloves obtained have the following values: The number of particles generated per two gloves is preferably 11,000 particles / m 3 Less than or equal to 10,000 particles / m 3 The fewer particles generated, the better.

[0050] The cut load measured in the JIS T 8502 Protective Clothing - Mechanical Properties - Cut Resistance Test against Sharp Objects is in the range of 5 to 15 N. The cut load is more preferably 6 N or more, even more preferably 7 N or more, and particularly preferably 10 N or more. If the cut load is less than 5 N, the gloves will not function as cut-resistant work gloves, and if it exceeds 15 N, the higher the cut resistance, the better the resistance to blades and burrs, but the gloves will become stiff and uncomfortable to wear. [Example]

[0051] The present invention will be described in more detail below using examples and comparative examples, but the present invention is not limited to the following examples. The methods for measuring the various physical properties in the following examples and comparative examples are as follows.

[0052] [Metsuke] JIS L 1096:2010 "Testing methods for woven and knitted fabrics", 8.3 "Mass per unit area", 1m 2 Mass per unit (g / m 2 ) was sought.

[0053] [Cutting strength and cut resistance (cut resistance)] The cutting force (N) of the palm of the glove was measured in accordance with JIS T 8052:2005 "Protective clothing - Mechanical properties - Test method for cut resistance against sharp objects." The higher the cutting force value, the more difficult it was to cut. The measuring machine used was the TDM-100 manufactured by RGI.

[0054] [Amount of dust generated] Four pairs of gloves were tested without being washed in a clean room (cleanliness: ISO class 5) using a tumbling dust generation tester set up in the clean room, and dust was generated by the tumbling method of JIS B 9923-1997 (Method for measuring contaminant particles in clean room clothing). The number of particles of each particle size or larger was measured using a particle counter. The measurement was carried out five times, and the maximum and minimum values ​​were excluded, and the average of the remaining measurements was converted into the amount of dust generated per two pairs of gloves. The drum rotation speed was 30 rpm, and the exhaust air flow rate was 0.0102 m 3 / second.

[0055] [Tensile strength] In accordance with JIS L 1095:2010 General spun yarn testing method, the tensile strength of the constituent yarns (paralleled) was measured using a Tensilon universal testing machine at a gripping distance of 20 cm and a pulling speed of 20 cm / min.

[0056] [Wear resistance] The test was conducted in accordance with JIS L 1096:2010 "Testing methods for woven and knitted fabrics", 8.19 "Abrasion resistance", F-2 method (abrasive paper method).

[0057] [Glove wearing evaluation (fit, hardness, tingling sensation)] A wear test was conducted with five subjects. According to 5.2 of EN 420:2003 Protective gloves - General requirements and test methods, all subjects gave a dexterity performance rating of level 5. Furthermore, in the sensory evaluation, if five out of five subjects rated the glove as "comfortable to wear," it was considered a pass (◎). If three or more out of five subjects rated the glove as "comfortable to wear," it was considered a pass (○). Otherwise, it was considered a fail (×). Furthermore, if three or more out of five subjects rated the glove as "not prickly," it was considered a "none," and if it felt prickly, it was considered a "present."

[0058] [Production example 1 (fluid-processed yarn)] A filament yarn of polyparaphenylene terephthalamide (hereinafter referred to as PPTA) fiber (manufactured by Toray DuPont Co., Ltd., trade name "Kevlar" (registered trademark)) with a single fiber fineness of 1.67 dtex and a total fineness of 1,670 dtex was used. A fluid-textured yarn of PPTA filament was obtained by fluid-texturing using the Taslan method with the fluid-texturing device shown in Figure 1, with an overfeed rate set to 3-12% and steam as the fluid. The fluid-textured yarn was an untwisted yarn.

[0059] [Manufacturing Example 2 (Spun Yarn)] The aramid staple yarn used was 100% para-aramid staple fiber with a fiber length of 51 mm and crimp count of approximately 8 crimps per inch, which was made by stapling para-aramid fiber with a fineness of 1.67 dtex ("Kevlar(R)29" manufactured by Toray DuPont Co., Ltd., tensile strength 20.3 cN / dtex). This was passed through a cotton opener, carding, and drawing machine to produce a sliver. This was then put into a ring spinning frame, where a twist (T1) of 13 t / inch, a twist coefficient of 2.9, and a Z-twist direction were added to produce a single spun yarn with a yarn count of 20 (cotton count) and a tensile strength of 2,415 g. Two of these spun yarns were then pulled together and a reverse (S) twist (T2) of 340 t / m was added in a double twister to produce a two-ply yarn with a yarn count of 20 / 2s (cotton count) and a tensile strength of 5,259 g.

[0060] [Production Example 3 (Fluid-processed yarn)] Fluid-processed yarn was obtained in the same manner as in Production Example 1, except that a filament yarn of PPTA fiber (manufactured by DuPont-Toray Co., Ltd., trade name "Kevlar" (registered trademark)) with a single fiber fineness of 1.67 dtex and a total fineness of 220 dtex was used.

[0061] Example 1 One fluid-textured yarn produced in Production Example 1 and two two-ply spun yarns produced in Production Example 2 were combined and fed into a 7-gauge glove knitting machine (manufactured by Shima Seiki Mfg. Co., Ltd.), and seamless gloves were knitted in the usual manner, except that two washer tensors with a matte surface were used among the yarn guides. The weight of the two gloves was 30.6 g. That is, the yarn guide section of the tensor shaft of the washer tensor is an alumina ceramic guide (YM99C manufactured by Yuasa Shido Co., Ltd., density 3.8, hardness 1,800, Rmax 1.5 μm), the two upper and lower tension washers are made of matte chrome plated material, and the other yarn guides are a mixture of alumina ceramic, matte chrome plated material and unplated guides, without being changed from the knitting machine specifications.

[0062] The glove produced in Example 1 had a particle count of 12,000 particles / m² with a particle size of 0.1 μm or more. 3 The cut strength was 11.6 N for the low-dust-generating gloves. There was no tingling sensation and the wearing evaluation was also good. As a result, low-dust-generating gloves were obtained that had improved tensile strength and abrasion resistance compared to gloves knitted with spun yarn alone.

[0063] (Comparative Example 1) Seamless gloves were knitted in the same manner as in Example 1, except that five spun yarns prepared in Production Example 2 were used. The obtained gloves had excellent cut resistance, but generated a large amount of dust, had a prickly feeling, and were rated poor in terms of wearability.

[0064] Example 2 A seamless glove was knitted in the same manner as in Example 1, except that two fluid-processed yarns produced in Production Example 3 and two two-ply spun yarns produced in Production Example 2 were used.

[0065] (Comparative Example 2) Seamless gloves were knitted in the same manner as in Example 1, except that three strands of the spun yarn prepared in Production Example 2 were used.

[0066] The glove configuration and evaluation results are summarized in Table 1.

[0067] [Table 1]

[0068] As shown in Table 1, by knitting and weaving fabrics using organic fiber yarns with a fineness of 220 to 1,700 dtex that have been fluid-jet processed at an overfeed rate of 3 to 12% and paralleled spun yarns (two-ply yarns), it is possible to obtain fabrics with a cut resistance of 5N to 15N and a particle count of 12,000 particles / m² of particles with a particle size of 0.1 μm or more per unit weight of knitted fabric. 3 It can be seen that the resulting knitted or woven fabric has low dust generation and excellent cut resistance, abrasion resistance, and tensile strength compared to gloves made from conventional spun yarns, as shown below. [Industrial Applicability]

[0069] Although the knitted or woven fabric of the present invention is made of spun yarn, it is useful as work gloves or work clothes that are relatively sensitive to contamination by dust, etc. Therefore, it is useful as work gloves or clothes in the fishing, agriculture, food industry, medical care, high-tech industry, etc., or as sports gloves or clothes. [Explanation of symbols]

[0070] 1. Organic fiber yarn 2 Feed rollers 3 Fluid Processing Nozzles 4 Fluid inlet 5 Delivery Roller 6 Winding roller 7. Take-up bobbin

Claims

1. A fiber yarn (A) having a fineness of 220 to 1,700 dtex and consisting only of organic fibers that have been fluid-jet processed at an overfeed rate of 3 to 12%, A yarn (B) consisting of only organic fibers in which short fiber bundles are spun, A woven or knitted fabric comprising: The organic fibers constituting the fiber yarns (A) and (B) are para-aramid fibers, The fiber yarn (B) is a two-ply spun yarn having a single yarn twist coefficient (K 1 ) of 2.0 to 4.0; The woven or knitted fabric is characterized in that it is composed of 10 to 70 mass % of fiber yarn (A) and 90 to 30 mass % of fiber yarn (B).

2. 2. The knitted or woven fabric according to claim 1, wherein the number of multifilaments in the fiber yarn (A) is 1,400 or less, and the single fiber fineness of the fiber yarn (B) is 5 dtex or less.

3. The knitted fabric described in claim 1, wherein the para-aramid fiber is polyparaphenylene terephthalamide fiber.

4. The knitted or woven fabric according to any one of claims 1 to 3, which simultaneously satisfies the following (1) and (2). (1) JIS B 9923: When dust is generated by a tumbling method and measured with a particle counter, the number of particles with a particle diameter of 0.1 μm or more is 12,000 particles / m per unit area of ​​woven or knitted fabric. ３ The following values ​​are shown. (2) The cutting load value measured in the JIS T 8502 Protective clothing - Mechanical properties - Cut resistance test against sharp objects is in the range of 5 to 15 N.

Images