JP6917669B2 - Cut resistant fabric - Google Patents

Description

The present invention relates to a cut-resistant fabric, and more particularly to a cut-resistant fabric having a higher cut resistance value and a thinner thickness than a conventional fabric.

Until now, it has been thought that the thinner the glove, the better the workability, but the lower the cut resistance value, which is one of the indicators of safety performance. The use of a metal wire as a core material to increase the cut resistance value is a technique that has been conventionally adopted.

For example, Patent Document 1 describes a composite yarn in which a crimped yarn of a high-performance filament having a fineness of 20 to 1600 dtex is wound as a sheath yarn on a core material made of a stainless steel fiber filament having a diameter of 30 μm to 100 μm, preferably 50 μm to 70 μm. A glove knitted with a 13-gauge glove knitting machine has been proposed. The glove has an incision resistance value measured according to ISO13997, which is 2 to 3 times higher than that of a glove knitted only with a high-performance filament, and is also excellent in knitting property.

However, the thinner the glove (high gauge), the finer the total fineness of the yarn is required to obtain knitting property and texture, and it is necessary to use a finer yarn for the core material (metal wire) and the sheath yarn. However, if the core material (metal wire) is made thin, the cut resistance value of the glove is significantly reduced. Therefore, the thickness of the glove and the cut resistance value are in a competitive relationship, and a glove having a high cut resistance value and a thin thickness has not been obtained.

Further, in another patent document, a fine metal wire having a diameter of 10 to 70 μm, preferably 15 to 35 μm is used as a core material, and a filament yarn such as polyethylene, polyparaphenylene terephthalamide, or polyester is used to reinforce the fine metal wire. Gloves have been proposed in which a core material is a thread wound around a thin metal wire and knitted with a composite thread in which the core thread is coated with a nylon thread or the like (see Patent Documents 2 to 5).

The composite yarn described in Patent Document 2 and the like prevents the thin metal wire from being cut in the step of double-covering the nylon yarn or the like on the core material. The knitted gloves have been shown to be good in terms of cut resistance and workability (softness), but the gloves actually knitted are those knitted with a normal 10G or 13G knitting machine. It is not a thin glove.

Recently, there has been an example of producing a 15-gauge thin glove using a core-sheath composite yarn in which a crimped yarn of a high-performance filament with a fine fineness is wound around a core material (metal wire) having a diameter of about 40 μm. Even in that case, no incision resistance of 15 N or more measured according to ISO13997 has been obtained.

Japanese Patent No. 4667155 (Claims, paragraph [0014], Table 1, etc.) Japanese Patent No. 4897684 (Claims, Table 1, etc.) Japanese Patent No. 5259803 (Claims, etc.) Japanese Patent No. 5349977 (Claims, etc.) Japanese Patent No. 5638567 (Claims, etc.)

In view of the background of the prior art, the present invention is intended to provide a cut resistant fabric having a very thin thickness and excellent cut resistance.

The present invention is based on the findings obtained from various studies on composite yarn using a metal wire as a core material, that is, the cut resistance of the conventional metal wire-using gloves measured according to ISO13997 of a 15-gauge thin glove. Did not reach 15N, whereas even the thinnest gloves of 18 gauge could achieve a cutting resistance of 20N, and although the details are unknown, the core thread consisting only of metal fiber filaments and the high Gloves made of core-sheath composite yarn, which is a combination of sheathed yarn made of fibers containing 50% by mass or more of crimped yarn of functional filament, have a cut resistance of 15N or more even if the thickness is less than 1.0 mm and are knitted. It was made based on the finding that it has good standing and texture.

That is, the present invention is as follows.
(1) A core yarn consisting of only metal fiber filaments, as a sheath yarn , aramid fiber, total aromatic polyester fiber, polyparaphenylene benzobisoxazole fiber, polybenzimidazole fiber, polyamideimide fiber, ultrahigh molecular weight polyethylene fiber, A cloth made of a core-sheath composite yarn coated with a fiber containing 50% by mass or more of a crimped yarn of a high-performance filament selected from liquid crystal polymer fibers, having a thickness of 0.3 to 0.8 mm and conforming to ISO13997. A cut-resistant fabric having a cut-resistant force of 15 N or more as measured.
(2) The cut-resistant fabric according to (1) above, wherein the core yarn contains a core yarn composed of only metal fiber filaments having a diameter of 10 to 30 μm.
(3) The cut-resistant fabric according to (1) or (2) above, which contains 50% by mass or more of crimped yarn of a high-performance filament having a fineness of 55 to 220 dtex as a sheath yarn.
(4) The cut-resistant fabric according to any one of (1) to (3) above, wherein the crimped yarn of the high-performance filament is made of aramid fiber.
(5) The core-sheath composite yarn is a core-sheath composite yarn in which a crimped yarn of a high-performance filament and a synthetic fiber are spirally wound around a core yarn made of only a metal fiber filament. 4) The cut-resistant fabric according to any one.
(6) In any of the above (1) to (5), the cloth made of the core-sheath composite yarn is knitted into a knitted fabric having a density of 15 to 30 / 25.4 mm and a course of 25 to 40 / 25.4 mm. The cut resistant fabric described.

According to the present invention, it is possible to provide an ultra-thin fabric having a higher cut resistance value than before. Further, the cloth can be easily provided by using a metal wire having a small diameter as a core yarn and a crimp yarn of a highly functional filament having a fine fineness as a sheath yarn.

Hereinafter, the cut-resistant fabric of the present invention will be described in detail.
The cut-resistant cloth of the present invention is a cloth made of a core-sheath composite yarn obtained by coating a core yarn made of only a metal fiber filament with a fiber containing 50% by mass or more of a crimped yarn of a high-performance filament as a sheath yarn. be. The fabric is characterized in that the thickness is in the range of 0.3 to 0.8 mm and the cut resistance measured according to ISO13997 is 15 N or more. The cut resistance is a value that cannot be reached with conventional thin fabrics.
In the present invention, the thickness and the cut resistance refer to the values measured in a state where the coating material is not adhered to the cut resistant fabric.

(Core thread)
The metal fiber filaments constituting the core yarn of the core-sheath composite yarn are appropriately selected so that the fabric knitted and woven using the core-sheath composite yarn has a predetermined thickness and cut resistance. Preferably, it contains a metal fiber filament having a diameter (wire diameter) of 10 to 30 μm. By setting the diameter of the metal fiber filament to 10 μm or more, it becomes easy to achieve a cut resistance of 15 N or more. More preferably, it is 15 μm or more. On the other hand, when the diameter is 30 μm or less, the knitting property (knitting property) of the yarn and the texture of the cloth are not significantly inferior, and it becomes easy to obtain an ultra-thin cloth. More preferably, it is 25 μm or less.

Examples of the metal constituting the metal fiber filament include stainless steel such as SUS304 (specific gravity 7.93) and SUS316 (specific gravity 7.98), tungsten steel (specific gravity 19.3), copper (specific gravity 8.96), and the like. Examples include aluminum (specific gravity 2.70). Among these metal fiber filaments, stainless steel or tungsten steel fiber filaments are preferable, and tungsten steel fiber filaments are particularly preferable, from the viewpoints of good rust resistance, economy, and knitting property.

As the metal fiber filament, one single filament yarn may be used, or a plurality of filament yarns that are aligned or twisted together may be used. When using a plurality of pieces, those having different diameters and metal types may be combined.

(Sheath thread)
The sheath yarn of the core-sheath composite yarn is composed of fibers containing 50% by mass or more of crimped yarns of high-performance filaments. By setting the crimped yarn of the high-performance filament to 50% by mass or more, it is possible to impart tensile strength and cut resistance to the core-sheath composite yarn even when a metal fiber filament having a small diameter is used as the core yarn.

The high-performance filament has a high tensile strength of 10 cN / dtex or more, preferably 15 cN / dtex or more, which is measured based on JIS L 1013, and a characteristic of the raw yarn, which is measured based on JIS L 1013. A fiber satisfying a high elastic modulus of 400 cN / dtex or more is preferably used. By using a high-performance filament having such characteristics, it is possible to impart tensile strength, a high degree of bending resistance and abrasion resistance to the core-sheath composite yarn, and even when a metal fiber filament having a small diameter is used for the core yarn. Tension strength can be imparted to the core-sheath composite yarn. Further, since the yarn breakage at the time of knitting can be eliminated and the cutting resistance can be imparted, the yarn (accompanying yarn) to be wound along or wound around the core yarn becomes unnecessary.

Examples of the material constituting such a high-performance filament include aramid fiber, total aromatic polyester fiber (for example, manufactured by Kuraray Co., Ltd., trade name "Vectran"), and polyparaphenylene benzobisoxazole fiber (for example, manufactured by Toyo Boseki Co., Ltd., trade name " Zyrone), polybenzimidazole fiber, polyamideimide fiber (for example, manufactured by Rhone Pulan, trade name "Kermel"), ultra-high molecular weight polyethylene fiber (for example, manufactured by Toyo Boseki Co., Ltd., trade name "Dyneema"), LCP (liquid crystal polymer) Fiber and the like are preferable. Among these fibers, aramid fibers are particularly preferable because they have excellent cut resistance.

The aramid fibers include meta-aramid fibers and para-aramid fibers, and the meta-aramid fibers include, for example, polymetaphenylene isophthalamide fibers (manufactured by DuPont, trade name "Nomex") and other meta-based total fragrances. Group polyamide fibers can be mentioned. Examples of para-aramid fibers include polyparaphenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade name "Kevlar") and copolyparaphenylene-3,4'-diphenyl ether terephthalamide fiber (manufactured by Teijin Co., Ltd.). , Trade name "Technora") and other para-based total aromatic polyamide fibers. Among these, para-aramid fibers are particularly preferably used because they are excellent in cut resistance and heat resistance as well as high strength characteristics and high elastic modulus. The aramid fiber can be produced by a known method or a method similar thereto, and a commercially available product as described above may be used.

The crimped yarn of the high-performance filament is a high-performance filament that has been subjected to false twisting (twisting → heat setting → untwisting), and has excellent coating and twisting properties of the core yarn, as well as the texture when knitted. Is used from the viewpoint of being soft and having excellent elasticity. The crimped yarn is a twisted or heat-set yarn that has not been untwisted, a twisted yarn that has been false-twisted, a heat-set yarn that has been false-twisted, or a twisted yarn. It may be false twisted.

The method for imparting crimp to the high-performance filament is not particularly limited, and a known method may be used. Preferred methods include those disclosed in Republished 2012-086548. That is, the crimped yarn is manufactured by carrying out a twisting step of twisting the high-performance filament strip, a dry heat treatment step, and a untwisting step of untwisting. The manufacturing method may be either a continuous false twisting method or a batch (non-continuous) false twisting method, but the point that a highly bulky crimped yarn can be obtained and the fibers of the crimped yarn are scattered. The continuous false twisting method is preferable from the point that the untwisted state is good.

_{The number of false twists by the false twist spindle in the continuous false twist processing method is the twist coefficient (K 1} ) represented by the following formula (1) in order to prevent the fibers from being cut due to the yarn being appropriately crimped and twisted too much. ) Is preferably about 4,000 to 11,000, preferably about 4,500 to 9,000.

〔但し、ｔは仮撚り数（回／ｍ）を表し、Ｄは繊度（ｔｅｘ）を表す。〕

[However, t represents the number of false twists (times / m), and D represents the fineness (tex). ]

When twisting with a false twist spindle, a single-pin, two-pin, or four-pin spinner can be used.

The temperature condition of the heat set in the dry heat treatment is preferably high temperature treatment in order for the crimped yarn to have the desired bulkiness and elasticity, and is preferably near the decomposition start temperature of the raw material fiber. Preferred temperature conditions vary depending on the raw material fiber, but in the case of para-aramid fiber, the ambient temperature inside the heater through which the yarn passes, that is, the heater temperature is set to about 300 to 650 ° C, more preferably 350 to 600 ° C. Is preferable.

The heater in the dry heat treatment may be a contact heater or a non-contact heater, and may be performed by a known means. The heating time varies depending on the type of fiber, the thickness of the thread, the heating temperature, etc., and therefore cannot be unequivocally determined, but is usually preferably about 0.005 to 2 seconds. It is preferably in the range of about 0.01 to 1.5 seconds.

The dry heat treatment may be performed under pressure, reduced pressure, or normal pressure, but it is preferable that the dry heat treatment is performed under normal pressure in the normal continuous false twisting process.

In the manufacturing method by the above false twisting method, when the crimped yarn of the para-aramid fiber is manufactured, the moisture content of the para-aramid fiber before the false twisting is preferably 20% or less, more preferably 15%. Hereinafter, it is particularly preferable to use 1 to 10%. In this case, in the above formula (1), D represents the fineness (tex) containing water. If the moisture content before twisting exceeds 20%, heat is not efficiently transferred to the yarn in the dry heat treatment and the heat setting effect cannot be obtained, so that it is difficult to obtain a good crimped yarn. If the water content is less than 1%, the yarn may become fibrillated due to rubbing of the yarn guide or the like.

The fineness and the number of filaments of the crimped yarn of the high-performance filament may be appropriately selected in consideration of the cutting resistance, elasticity, flexibility, texture and the like according to the purpose of use. The fineness is preferably in the range of 55 to 220 dtex. By setting the fineness to 55 dtex or more, it is possible to impart cut resistance to the core-sheath composite yarn even when a metal fiber filament having a small diameter is used for the core yarn, and by setting it to 220 dtex or less, an ultra-thin fabric. It becomes easier to obtain.
The single yarn fineness of the crimped yarn of the high-performance filament is preferably in the range of 0.1 to 10 dtex depending on the application. More preferably, it is in the range of 0.4 to 5 dtex. If it is less than 0.1 dtex, the yarn-making efficiency is low and the cost may increase, and if it exceeds 10 dtex, the rigidity becomes high, which makes it unsuitable for fabrics that require flexibility.

The crimping yarn of the high-performance filament may be composed of one type of the above-mentioned high-performance filament, or may be composed of any two or more types of the above-mentioned high-performance filament.

(Core sheath composite yarn)
From the viewpoint of obtaining good cut resistance, the core-sheath composite yarn of the present invention is a core yarn in which fibers containing crimped yarns of high-performance filaments are spirally wound in a single layer (SCY: single covered yarn). In addition, from the viewpoint of obtaining excellent coverage, other known fibers such as high-performance fibers, synthetic fibers such as nylon fibers and polyester fibers, and natural fibers such as cotton. May be wound in a spiral shape and the core yarn is coated in double (DCY: double covered yarn) or triple.
Here, in DCY, the single coated yarn arranged around the metal fiber filament is referred to as a lower twisted yarn, and the double coated yarn is referred to as an upper twisted yarn. In the case of double coating, it is preferable that the twisting direction of the cover ring of the upper twisted yarn is opposite to the twisting direction of the covering of the lower twisted yarn in order to cancel the torque.

In the core-sheath composite yarn of the present invention, a combination of a lower twist yarn and an upper twist yarn can be arbitrarily selected. For example, a coating in which the lower twist yarn is a crimped yarn of a high-performance filament and the upper twist yarn is another known fiber. The yarn (CY-1) and the lower twist yarn are other known fibers, and the upper twist yarn is a coated yarn (CY-2) which is a crimp yarn of a high-performance filament, or both the lower twist yarn and the upper twist yarn are high-performance filaments. It may be any of a coating yarn which is a crimping yarn (that is, a coating yarn in which a crimping yarn of a high-performance filament is doubly wound around a core made of only a metal fiber filament) (CY-3). Among these coating yarns, CY-1 or CY-2 is preferable in terms of fabric thickness, texture, and economy.

In the above CY-1 and CY-2, the ratio of the crimped yarn of the high-performance filament to the sheath yarn is 50% by mass or more, more preferably 60 to 90% by mass, and further preferably 65 to 85% by mass. Is. By using the crimped yarn of the high-performance filament and other known fibers in combination, it is possible to impart a soft feel and texture to the fabric as well as cut resistance.

The core-sheath composite yarn of the present invention is also used as a composite yarn by blending or twisting with other known fibers such as polyester fiber, nylon fiber and polyvinyl alcohol fiber as long as the effect of the present invention is not impaired. You can also do it.

Further, the core-sheath composite yarn of the present invention may be colored with a dye or a pigment, if necessary. As a coloring method, a raw yarn obtained by mixing a dye or a pigment with a polymer and spinning before spinning may be used, or a yarn colored by various methods may be used. The knitted fabric may be colored with a dye or pigment.

The total fineness of the core-sheath composite yarn is preferably in the range of 200 to 450 dtex, more preferably in the range of 200 to 400 dtex. If it is 200 dtex or more, it can be knitted without giving a cut resistance to the cloth and without thread breakage, and if it is 450 dtex or less, the knitting property of the cloth is not significantly deteriorated, and an ultra-thin cloth is used. Obtainable.

〔但し、Ｔはカバーリングの撚り数（回／ｍ）を表し、Ｄは繊度（ｔｅｘ）を表す。〕 (Number of scabbard covering twists)
In the core-sheath composite yarn of the present invention, when the sheath yarn is coated on the core yarn, the number of twists of the sheath yarn covering may be appropriately selected depending on the fineness of the sheath yarn, and the twist represented by the following formula (2). The value of the coefficient (K ₂ ) is preferably about 500 to 5,000, preferably about 1,000 to 3,000. When the twist coefficient is less than 500, the coating state of the sheath yarn on the core yarn of the coating yarn is deteriorated, and when the glove is made, the core yarn is exposed and the quality of the glove surface is deteriorated. If it exceeds 5,000, yarn breakage or the like is likely to occur in the covering process, the process passability is deteriorated, and the sheath yarn is tightened, so that the inherent characteristics of the sheath yarn are reflected in the coating yarn. It disappears.

[However, T represents the number of twists (times / m) of the covering, and D represents the fineness (tex). ]

In the case of gloves, the force to peel off the coating material on the surface is applied even when using them. Therefore, if the number of times the sheath yarn is wound around the core yarn is too large, the bulkiness of the sheath yarn (particularly the crimped yarn) is not reflected in the coating yarn, and it becomes difficult for the coating material to enter the gap between the sheath yarns. This makes it difficult for the coating material to adhere to the gloves. If the adhesion between the coating thread and the coating material is low, the coating material may peel off from the surface of the glove, and the glove may be torn without being reinforced, resulting in a decrease in durability.

A commercially available covering machine or the like is preferably used for coating. The core-sheath composite yarn can be produced by a known method or a method similar thereto.

(Cut resistant fabric)
The cut-resistant fabric of the present invention is produced by knitting the above-mentioned core-sheath composite yarn into a woven fabric, a knitted fabric, or the like. It is also possible to knit by aligning the core-sheath composite yarn and known fibers within a range that does not impair the weavability, knitting property, cloth thickness, and cut resistance. For all or part of the resulting knitted fabric. It is also possible to impregnate a resin such as a polyurethane resin, a silicone resin, an acrylic resin, or an epoxy resin and coat the coating material.

For example, when knitting a knitted fabric (gloves) by knitting a core-sheath composite yarn into a knitted fabric, a commercially available knitting machine can be conveniently adopted. In the plating knitting, the core-sheath composite yarn of the present invention is used as the ground yarn, and either the ground yarn or the splicing yarn is knitted so as to be arranged on the outer surface or the inner surface. When knitting the ground yarn on the outer surface / the splicing yarn on the inner surface, use the glove as it is, and when knitting the ground yarn on the inner surface / the splicing yarn on the outer surface, use the knitted gloves on the inner / A glove is a state in which the outer surface is reversed and the ground thread is finally arranged on the outer surface / the splicing thread on the inner surface. By doing so, when wearing gloves, the contact between the core-sheath composite yarn and the user's skin can be relatively suppressed, and since the splicing yarn comes into contact with the skin, the wearing feeling and sweat absorption are improved, and the outer surface The cut-resistant ground yarn can prevent damage to the inner surface of the splicing yarn from damage caused by external sharp objects during work, and can improve the durability of the glove. As for the knitting method, any method can be used depending on the ease of knitting and the like.

As the splicing thread, elastic nylon fiber, polyurethane elastic fiber, elastic fiber and other fibers are entangled by a fluid jet from the viewpoint of obtaining the fit (tightening condition, stretching condition) and workability of gloves. The elastic entangled yarn and the like formed in the above are preferably used. The fineness of the splicing yarn is preferably 30 to 190 dtex, more preferably 50 to 190 dtex. If it is 30 dtex or more, the texture and elasticity can be imparted to the glove, and if it is 190 dtex or less, the knitting property of the glove is not significantly deteriorated.

In the case of a cut-resistant fabric made of a core-sheath composite yarn knitted on a knitted fabric, the density is knitted into a knitted fabric having a density of 15 to 30 / 25.4 mm in the wale direction and 25 to 40 / 25.4 mm in the course direction. More preferably, the wales are in the range of 20 to 30 / 25.4 mm and the course is in the range of 30 to 40 / 25.4 mm. When the density in the wales and course directions is within this range, the stitches become finer, the gaps can be reduced, and cut resistance and a feeling of wearing can be imparted.

The obtained cut-resistant fabric can be used as a material for protective equipment such as work clothes, work gloves, work arm covers, and work finger cots, or as a material for sports clothes such as outdoor sports clothes and general sports clothes. Alternatively, it can be suitably used as a material for articles such as shoes, bags, bags, and industrial materials that require cut resistance.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. The evaluation method for each physical property was as follows.

[Total fineness]
1) JIS L 1013: 2010 Chemical fiber filament yarn test method 8.3 Obtained by the B method (simple method).
F ₀ = 1000 × m / L × (100 + R ₀ ) / 100
(F ₀ : Positive fineness (tex), L: Sample length (m), m: Absolute dry mass of sample (g), R ₀ : Official moisture content (%) specified in 4.1 of JIS L 0105. )))

[Glove thickness]
The thickness of the palm of the glove was measured by JIS L 1096: 2010, a woven fabric and knitted fabric test method 8.4.

[Knitting property]
After knitting 10 gloves using a glove knitting machine (Shima Seiki Seisakusho Co., Ltd.), visually check the appearance of the gloves and pass the one with 2 or less stitch defects (skipping, shape loss, etc.) ( ◯) and those with 3 or more sheets were marked with (x).

[Cut resistance]
The cut resistance value was measured in accordance with ISO13997 "Protective clothing-Mechanical properties-Cut resistance test method for sharp objects". The cutting direction was 45 degrees.

[Glove wearing evaluation (texture)]
A wearing test was conducted by 5 subjects. EN 420: 2003 Protective gloves-General requirements and test methods 5.2 gave all subjects a level 5 performance rating for Dexterity, and 3 or more out of 5 sensory evaluations were "good to wear" Those who evaluated it as passed (○) and others failed (×).

[Workability, hygroscopicity]
Judgment was made by five panelists according to the following criteria, and the average was used.
A: Very good, B: Good, C: Normal, D: Bad, E: Very bad

(Example 1)
One tungsten steel fiber filament (wire diameter 20 μm) is used as the core yarn, and the sheath yarn is manufactured by Toray DuPont Co., Ltd. with a total fineness of 220 dtex, a single yarn fineness of 1.7 dtex, a tensile strength of 20.3 cN / dtex, and tensile elasticity. A crimped yarn (trade name "SD") processed from a polyparaphenylene terephthalamide fiber filament yarn ("Kevlar (registered trademark)") having a rate of 499 cN / dtex and a water content of 7% is spirally wound in the Z direction. Further, Woolly nylon fiber (44 dtex) was spirally wound in the opposite direction (S direction) to the polyparaphenylene terephthalamide fiber to obtain a core-sheath composite yarn having a total fineness of 327 dtex. At this time, the number of twists of the covering was set to 400 times / m both above and below.

Mixing ratio (mass%) of core-sheath composite yarn:
Tungsten steel fiber / Kevlar crimped yarn / nylon fiber = 18/68/14

In the above-mentioned crimped yarn, false twisting speed: 60 m / min, false twisting temperature (dry heat): 500 ° C., false twisting coefficient t: 1,150 times / m, false twisting is applied to the filament yarn. Twisting direction: S direction, spindle speed: 69,000 rpm, obtained by continuous false twisting, the strength retention rate of the crimped yarn is 40%, and the twisting coefficient (K ₁ ) = 7. , 628.

The obtained core-sheath composite yarn is knitted into a tubular knitted fabric (horizontal knitting structure) with an 18-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.). Gloves with a density (number of wales 22.0 / 25.4 mm, number of courses 32.0 / 25.4 mm) and a grain of 153 g / m ^{2 on the palm were knitted.}

(Example 2)
The core-sheath composite yarn and the splicing yarn (78 dtex nylon fiber woolly processed yarn (twisting direction: Z twist)) obtained in Example 1 were supplied to an 18 gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.). In plating knitting, the ground yarn is arranged on the outer surface / the splicing yarn is arranged on the inner surface, the thickness of the palm part is 0.55 mm, the density of the palm part (number of wales 21.5 / 25.4 mm, number of courses 36.0/25). .4 mm), 195 g / m ² gloves with a grain on the palm were knitted.

(Example 3)
One tungsten steel fiber filament (wire diameter 20 μm) used in Example 1 was used as a core yarn, and as a sheath yarn, a total fineness of 220 dtex, a single yarn fineness of 1.7 dtex, and a tensile strength of 20. Z The woolly nylon fiber (78 dtex) was spirally wound in the direction opposite to the polyparaphenylene terephthalamide fiber (S direction) to obtain a core-sheath composite yarn having a total fineness of 361 dtex. The number of twists of the covering at this time was 400 times / m.
The obtained core-sheath composite yarn was knitted into a tubular knitted fabric (horizontal knitting structure) with an 18-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.), and knitted fabrics having the properties shown in Table 1 were knitted. ..

(Example 4)
The core-sheath composite yarn and elastic splicing yarn obtained in Example 1 are supplied to an 18-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.), and the ground yarn is on the outer surface / the splicing yarn is on the inner surface by plating knitting. The placed gloves of the sex shown in Table 1 were knitted.

(Example 5)
The core-sheath composite yarn obtained in Example 1 was supplied to a 15-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.) to knit gloves having the properties shown in Table 1.

(Example 6)
The core-sheath composite yarn and elastic splicing yarn obtained in Example 1 are supplied to a 15-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.), and the ground yarn is on the outer surface / the splicing yarn is on the inner surface by plating knitting. The placed gloves of the sex shown in Table 1 were knitted.

The above-mentioned elastic splicing yarn is a core yarn made of polyurethane elastic fiber (manufactured by Toray Operontex Co., Ltd., trade name "Lycra" (registered trademark)) having a fineness of 22 dtex and a breaking elongation of 530%, as a sheath yarn. A 78 dtex nylon fiber woolly processed yarn (twisting direction: Z twist) was spirally wound to obtain a coated yarn having a total fineness of 87 dtex under the following processing conditions.
Spindle speed: 5,000 rpm
Draft of core yarn: 2.5 times Covering of sheath yarn Number of twists: 700 times Twist direction: Z direction Twist coefficient (K ₂ ) = 2,764

(Comparative Example 1)
One stainless steel fiber filament (manufactured by Nippon Seisen Co., Ltd., wire diameter 40 μm, specific gravity 7.98) is used as the core yarn, and the sheath yarn is manufactured by Toray DuPont Co., Ltd. with a total fineness of 220 dtex and a single yarn fineness of 1. A crimped yarn (commodity) processed from polyparaphenylene terephthalamide fiber filament yarn ("Kevlar (registered trademark)") having 7 dtex, tensile strength of 20.3 cN / dtex, tensile elasticity of 499 cN / dtex, and moisture content of 7%. The name "SD") is spirally wound in the S direction, and further, Woolly nylon fiber (78 dtex) is spirally wound in the opposite direction to the polyparaphenylene terephthalamide fiber to obtain a core-sheath composite yarn having a total fineness of 400 dtex. rice field. The number of twists of the covering at this time was 400 times / m.

The above core-sheath composite yarn and splicing yarn (156 dtex nylon fiber woolly processed yarn (twisting direction: Z twist)) are supplied to a 15 gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.) for plating knitting. Then, after arranging the ground yarn on the inner surface / the splicing yarn on the outer surface, the inner / outer surface of the glove was reversed, and the glove in which the ground yarn was arranged on the outer surface / the splicing yarn was arranged on the inner surface was knitted.

(Comparative Example 2)
Two stainless steel fiber filaments (manufactured by Nippon Seisen Co., Ltd., wire diameter 50 μm, specific gravity 7.98) are used as the core yarn, and the sheath yarn is manufactured by Toray DuPont Co., Ltd. with a total fineness of 440 dtex and a single yarn fineness of 1. 7dtex, tensile strength 20.3cN / dtex, tensile elasticity 499cN / dtex, moisture content 7% polyparaphenylene terephthalamide fiber filament yarn ("Kevlar (registered trademark)") crimped yarn (trade name " SD ") was spirally wound in the S direction, and further, Woolly nylon fiber (78 dtex) was spirally wound in the direction opposite to the polyparaphenylene terephthalamide fiber to obtain a core-sheath composite yarn having a total fineness of 836 dtex. The number of twists of the covering at this time was 400 times / m.

The above core-sheath composite yarn and splicing yarn (156 dtex nylon fiber woolly processed yarn (twisting direction: Z twist)) are supplied to a 13-gauge type glove knitting machine (Shima Seiki Seisakusho Co., Ltd.) for plating knitting. Then, after arranging the ground yarn on the inner surface / the splicing yarn on the outer surface, the inner / outer surface of the glove was reversed, and the glove in which the ground yarn was arranged on the outer surface / the splicing yarn was arranged on the inner surface was knitted.

Table 1 shows the properties and evaluation results of the knitted fabrics obtained in Examples and Comparative Examples.

As is clear from Table 1, the cut-resistant fabric according to the present invention has a high cut resistance value of 15 N or more while having a thickness of 0.8 mm or less, and is much thicker than the conventional one. We were able to realize thin ultra-thin gloves. In addition, the 18-gauge thin gloves had good knitting property, texture, and workability.

Since the ultra-thin cut-resistant fabric is obtained in this way, it can be used not only for industrial use, sports, and outdoor use, but also for general use.

The cut-resistant fabric of the present invention is useful as a material for industrial and general clothing, gloves and the like.

Claims (6)

Core yarn consisting of only metal fiber filaments, as sheath yarn , aramid fiber, total aromatic polyester fiber, polyparaphenylene benzobisoxazole fiber, polybenzimidazole fiber, polyamideimide fiber, ultrahigh molecular weight polyethylene fiber, liquid crystal polymer fiber It is a cloth made of a core-sheath composite yarn coated with a fiber containing 50% by mass or more of a crimped yarn of a high-performance filament selected from the above, and has a thickness of 0.3 to 0.8 mm and is measured according to ISO13997. A cut-resistant fabric characterized by a cut-resistant force of 15 N or more.
The cut-resistant fabric according to claim 1, wherein the core yarn includes a core yarn composed of only a metal fiber filament having a diameter of 10 to 30 μm. The cut-resistant fabric according to claim 1 or 2, which contains 50% by mass or more of crimped yarn of a high-performance filament having a fineness of 55 to 220 dtex as a sheath yarn. The cut-resistant fabric according to any one of claims 1 to 3, wherein the crimped yarn of the high-performance filament is made of aramid fiber. The core-sheath composite yarn according to any one of claims 1 to 4, wherein the core-sheath composite yarn is a core yarn in which a crimped yarn of a high-performance filament and a synthetic fiber are spirally wound around a core yarn made of only a metal fiber filament. Cut resistant fabric. The cut-resistant fabric according to any one of claims 1 to 5, wherein the fabric made of the core-sheath composite yarn is knitted into a knit fabric having a density of 15 to 30 / 25.4 mm and a course of 25 to 40 / 25.4 mm. ..