JP2022137802A - Knitted or woven fabric - Google Patents

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitted fabric obtained by interknitting and weaving a fluid jet processed yarn and a spun yarn.

Among organic fibers, knitted fabrics (gloves, arm covers, aprons, etc.) that use high-strength fibers such as wholly aromatic polyamide fibers (aramid fibers) and wholly aromatic polyester fibers are difficult to cut with a knife. , Cut resistance is remarkably high compared to conventional gloves, arm covers, aprons, etc. using cotton, etc. For this reason, it is difficult for workers to handle burred sheet metal products and fragile glass products, as well as garbage collection sites that handle general garbage that may contain metal or glass fragments. It has been used as protective clothing to protect the body from cut accidents.

However, such workers strongly demand safer and higher-quality protective clothing. For example, when wearing protective gloves, in general, one pair of protective gloves is often worn for work, and depending on the work content, further cut resistance is required, and gloves need to be changed due to dirt, etc., so work gloves Gloves of the same type, sewn leather gloves, rubber gloves, or the like are often layered on top of the same type of glove. Therefore, there is a demand for a light-weight, easy-to-wear (easy-to-wear) and comfortable-to-wear (easy-to-work).

In general, woven fabrics using high-strength spun yarn have excellent cut resistance, but the high rigidity of the fibers gives them a stiff feeling, and the stimulation of the hard fiber ends gives the wearer a tingling sensation. There is a problem that the fibril fibers fall off during wearing and generate dust. Therefore, in knitted fabrics using spun yarns of high-strength fibers, cut resistance and wearability/dust-generating properties are in a mutual relationship.

In other words, high-strength fibers generally become more difficult to cut as the single filament fineness increases. By using high-strength fibers, the bending hardness of short fibers is dramatically increased. Therefore, by simply using spun yarn with a large fineness, it is possible to create only knitted fabrics that have a prickly feel even though they have cut resistance. As a result, the tingling sensation of the knitted or woven fabric is somewhat eliminated, but the cut resistance, which is a feature of high-strength fibers, cannot be fully utilized.

Therefore, in Patent Document 1, a yarn is knitted with a single or a plurality of fiber yarns having a fineness of 440 to 1,800 dtex made only of fluid-jet processed organic fibers (but not including elastic fibers). Disclosed is a cut-resistant glove that suppresses the amount of dust generated from yarn during yarn manufacturing and knitting. The cut resistant glove has high cut resistance, generates less dust, and has good fit, hardness, and tingling sensation. However, Cited Document 1 does not disclose or suggest that the fluid-processed yarn that has undergone fluid jet processing is interwoven or aligned with the spun yarn, and the knitted fabric is produced using the aligned yarn.

In Patent Document 2, a polyketone fiber multifilament yarn (tensile strength 18 cN/dtex) of 1,670 dtex/1,250 f (single filament fineness 1.3 dtex) is cut into a fiber length of 51 mm, and a cotton count of 20 s/1 is obtained. After the spun yarn was produced, the spun yarn and the Z-twisted 280 dtex polyketone fiber multifilament yarn were combined, S-twisted (500 T/m) to produce a plied yarn, and 6 plied yarns were combined. As a result of producing gloves using the material, it is disclosed that the gloves have excellent softness and wearability, and that the cut resistance according to JIS-T-8052 is 9N (see Example 1). In addition, as polyketone fiber multifilament yarn, the use of fluid injection processed yarn is also suggested, but the characteristics of fluid injection processed yarn and the evaluation results of gloves are not shown, and the specifications of looms and knitting machines are also taken into consideration. Therefore, it is difficult to predict the properties of the knitted fabric (especially the dust generation property) from the disclosure of Patent Document 2.

Protective gloves knitted from fluid-processed yarns of ultrahigh-molecular-weight polyethylene fibers or polyketone fibers, which are relatively resistant to fluffing, 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 conflicting relationship. is also affected by Therefore, it is currently difficult to obtain a spun yarn glove that is both cut resistant and has low dust generation and that satisfies the fitting feeling (wearability) when worn.

JP 2020-158919 A Japanese Patent Application Laid-Open No. 2008-308772 JP 2009-079309 A

The present invention has been made in view of this background of the prior art, and while taking advantage of the cut resistance, which is an advantage of conventional spun yarn knitted fabrics, the drawbacks of spun yarn knitted fabrics, such as dust generation and wearability, are improved. It is an object of the present invention to provide a knitted or woven fabric which is improved and has excellent tensile strength and abrasion resistance.

The present invention employs the following means in order to solve such problems. That is, the present invention provides a fiber yarn (A) consisting solely of fluid jet processed organic fibers having a fineness of 220 to 1,700 dtex and a fiber yarn (B) consisting solely of organic fibers spun from short fiber bundles. To provide a knitted or woven fabric characterized by being obtained by combining and weaving.

According to the present invention, an organic fiber yarn having a specific fineness consisting only of fluid-jetted organic fibers and an organic fiber yarn consisting of organic fibers spun from short fiber bundles are mixed and woven, It is possible to provide a knitted or woven fabric that does not have a prickly feeling, is excellent in cut resistance and low dust generation, and is excellent in tensile strength and abrasion resistance.

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 the knitted fabric made of spun yarn alone, and a remarkable improvement effect was observed. Since the force can be maintained, it is possible to provide a knitted fabric that does not impair the characteristics of conventional spun yarn knitted fabrics.

1 is a schematic diagram showing an example of fluid jet processing of an organic fiber thread; FIG.

The present invention will be described in detail below.
The knitted fabric of the present invention consists of a fiber yarn (A) consisting only of fluid-jetted organic fibers with a fineness of 220 to 1,700 dtex and a fiber yarn (B) consisting only of organic fibers spun from short fiber bundles. ) is mixed knitted and woven.
However, the organic fibers constituting the fiber thread (A) and the fiber thread (B) do not contain elastic fibers. Gloves knitted from threads containing elastic fibers have the advantage of being excellent in fit when worn, but have problems in terms of quality control.

<Fiber thread (A)>

[Organic fiber]
In the above fiber yarn (A), the organic fiber can be appropriately selected from known fibers. Continuous fibers of high strength fibers, which are 5 cN/dtex or more, are preferred. If the tensile strength is less than 17.5 cN/dtex, it tends to be difficult to impart high wear resistance to the fiber yarn. The tensile strength of the organic fibers is preferably 17.5-35 cN/dtex, more preferably 20-35 cN/dtex.

From the viewpoint of tensile strength and abrasion resistance, the above organic fibers include para-aramid fibers, meta-aramid fibers, wholly aromatic polyester fibers, polyparaphenylenebenzobisoxazole fibers, polyketone fibers, polyamideimide fibers, ultra-high Examples include molecular weight polyethylene fibers and high strength vinylon fibers. The organic fibers may be used singly or in combination of two or more. Among these materials, para-/meta-aramid fibers and ultra-high molecular weight polyethylene fibers are preferable because they are comfortable to wear when wearing gloves. Fibers are preferred. 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-type and para-type aramid fibers can be used in combination as the aramid fibers.

Commercially available organic fibers may be used, and para-aramid fibers include, for example, polyparaphenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade name "Kevlar" (registered trademark)), copolyparaphenylene -3,4'-Oxydiphenylene terephthalamide fiber (manufactured by Teijin Limited, trade name "Technora" (registered trademark)) and the like. Among these, poly-paraphenylene terephthalamide fiber is preferable because of its high strength, high elastic modulus, excellent cut resistance and heat resistance.

In addition, as a wholly aromatic polyester fiber, Kuraray Co., Ltd., trade name "Vectran", etc., as a polyparaphenylene benzobisoxazole fiber, Toyobo Co., Ltd., trade name, "Zylon", etc., as an ultra-high molecular weight polyethylene fiber , manufactured by Toyobo Co., Ltd., under the trade names of "IZANAS" and "Tsunooga"; manufactured by DSM, under the trade name of "Dyneema"; and manufactured by Honeywell under the trade name of "Spectra".

[Fiber thread (A)]
The fiber thread (A) made of organic fibers has a fineness of 220 to 1,700 dtex. If the fineness of the fiber yarn is less than 220, cut resistance of the knitted or woven fabric deteriorates when the number of aligned yarns is extremely reduced, and conversely, productivity of the knitted or woven fabric deteriorates when the number of aligned yarns increases. On the other hand, when the fineness of the fiber yarn exceeds 1,700 dex, the knitting performance is deteriorated (the cutter of the knitting machine becomes difficult to cut). The fineness of the fiber thread is more preferably 440 to 1,700 dtex, still more preferably 600 to 1,700 dtex.

The single fiber fineness of the organic fibers is preferably 0.1 to 10 dtex, more preferably 0.3 to 6 dtex, particularly preferably 1.0 to 2.5 dtex. If it is less than 0.1 dtex, the strength of the fiber is too weak to form a glove, while if it exceeds 10 dtex, the glove becomes hard.

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

[Fluid injection processing]
The fiber yarn (A) is knitted from a single or multiple yarns of fluid-processed yarn obtained by subjecting organic fibers to fluid jet processing. Although the number of lines to be arranged is not particularly limited, it is usually 2 to 5 lines, preferably 2 to 3 lines.

Fluid jetting is a technique of forcibly spraying a fluid such as water, water vapor, or air onto fibers to disturb the orientation of the fibers by the flow of the fluid, thereby imparting bulkiness. Organic fibers with a tensile strength of 17.5 cN / dtex or more, such as para-aramid fibers, have a high tensile modulus and tend to make knitted gloves hard, but by applying fluid jet processing, bulkiness can be improved without damaging the fiber surface. can be given.

FIG. 1 shows an example of the fluid jet processing method for organic fibers used in the present invention. The organic fiber yarn 1 is supplied from the feed roller 2 to the fluid processing nozzle 3, joins the fluid supplied to the same fluid processing nozzle 3 from another inlet 4, is ejected from the fluid processing nozzle 3, and is delivered to the delivery roller. 5 and wound on a winding bobbin 7. The organic fiber yarn 1 may be supplied from one raw yarn bobbin or may be supplied from a plurality of raw yarn bobbins. The organic fiber thread may be of one type, or two or more different types of materials may be supplied to the fluid processing nozzle and combined.

In fluid jet processing, by selecting processing conditions such as overfeed rate, thread thickness, nozzle shape, fluid pressure, processing speed, etc., it is possible to produce from highly bulky textured yarn with loop-like fluff. Depending on the application, various textured yarns can be obtained, up to lightly bulky yarns with no loop fuzz. In general, thin yarns (150 dtex or less) are strongly disturbed by fluid jet processing, so that high-strength fibers such as para-aramid fibers may be fibrillated on the fiber surface. The fineness of the organic fiber yarn of the present invention is 220 to 1,700 dtex, and since it is not easily disturbed by fluid jet processing, it is difficult to form loops, the fiber surface is difficult to damage, and each yarn has a wave-like slack. It becomes a bulky textured yarn with swelling that forms a shape.

By processing the organic fiber yarn with an overfeed ratio of 3 to 12%, more preferably 3 to 8%, and a fluid injection pressure of 1 MPa or less, the fiber yarn suitable for the cut resistant glove of the present invention can be obtained. In addition, fibrillation of organic fibers and scraping of the fiber surface are suppressed, and adhesion of fibril fragments and shavings to gloves is suppressed. The term "fibrillation" refers to a phenomenon in which a single fiber cracks and splits into finer fibers.

The fiber thread (A) is, in addition to the fiber thread made of the above-mentioned high-strength organic fibers, for example, polyamide-based, polyester-based, polyacrylonitrile-based, polyurethane-based, regenerated fibers such as rayon, and semi-semiconductors such as acetate. Known fiber threads such as synthetic fibers, polyolefin-based, polyvinyl chloride-based, polyvinylidene chloride-based, or phenol-based synthetic fibers may be included. Known fibers such as nylon and polyester are preferably included in the yarn at a ratio of less than about 50% by mass, more preferably, within a range that does not impair the effects of the present invention (low dust generation, cut resistance). It is 10 to 30% by mass.

As for the number of fiber threads (A) that constitute the knitted fabric, one or more is used. When a plurality of yarns are knitted, the constitution of the organic fiber yarns may be the same or different, and only some yarns may contain fibers such as nylon and polyester.

<Fiber thread (B)>

The fibrous yarn (B) is a fibrous yarn consisting only of organic fibers spun from short fiber bundles. A single twisted yarn of one fiber yarn or a plied yarn of a plurality of fiber yarns is used.

As the organic fibers, one or a mixture of two or more fibers selected from the organic fibers mentioned in the fiber thread (A), regenerated fibers such as rayon, and natural fibers such as cotton and linen are used. Among them, the high-strength organic fibers exemplified in the fiber thread (A) are preferable because they can improve the tensile strength, tear strength, burst strength, abrasion resistance, and cut resistance of the fabric.

The short fibers preferably have an average fiber length of 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, it is possible to eliminate the tingling sensation of the knitted fabric and improve workability and wearability. In order to obtain good spinnability, the number of crimps of the short fibers is preferably about 3 to about 12 crimps/inch.

The single fiber fineness of the short fibers is preferably 0.8 to 10.0 dtex, more preferably 1.0 to 6.5 dtex, 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" is insufficient. becomes.

The spun yarn used in the present invention may be obtained by manufacturing organic fibers by conventional methods using cotton spinning, staple spinning or worsted spinning equipment. At that time, the fineness (count) of the spun yarn is British cotton count 30 to 70. Here, as the spun yarn becomes thinner, the number of yarn counts increases.

As for the form of the spun yarn, a spun yarn single yarn or a spun yarn double yarn obtained by aligning two spun yarn single yarns and twisting them in the opposite direction to the spun yarn single yarn is used. In addition, a triple yarn obtained by arranging and twisting three single spun yarns may be used. Among these spun yarns, two-ply yarn is preferable from the viewpoint of tensile strength to withstand tension during knitting and excellent cut resistance of the fabric. The count of the two-ply spun yarn is preferably a cotton count of No. 10/2s to No. 60/2s, and within the above range, workability is not significantly impaired. More preferably, No. 15/2s to No. 50/2s, and still more preferably No. 20/2s to No. 40/2s.

It is preferable that the spun yarn has a single yarn twist coefficient (K ₁ ) and a twist number (T ₁ , T ₂ ) of the single yarn and the two-ply yarn that is aligned. When the spun yarn single yarn is twisted, the single yarn twist coefficient (K ₁ ) obtained by the following formula is preferably in the range of 2.0 to 4.0. If the single yarn twist coefficient (K ₁ ) is less than 2.0, the entanglement between the short fibers becomes too weak, and the ends of the short fibers protrude from the spun yarn, resulting in fabric (gloves) with a tingling sensation. On the other hand, if the single yarn twist coefficient (K ₁ ) is more than 4.0, the twist becomes too strong and the occurrence of double twist becomes strong, resulting in deterioration of processability, the tensile strength of the spun yarn is also reduced, and the texture of the spun yarn is deteriorated. is also inferior. A more preferable single yarn twist coefficient (K ₁ ) is in the range of 2.5 to 3.8. Also, the single yarn twist number (T ₁ ) 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.

Twist factor K=T/s ^1/2
T; number of twists (t/inch)
s; cotton count

Two spun yarn single yarns to which the above-described prescribed twist (twist number T ₁ ) has been applied are aligned, and a prescribed reverse twist (twist number T ₂ ) is applied with a double twister to process the spun yarn. The double twist number (T ₂ ) is preferably 100 to 900 t/m, more preferably 150 to 800 t/m.
The ply twist coefficient (K ₂ ) of the two-ply yarn obtained by the above formula is preferably in the range of 2.0 to 6.0. If the two-ply yarn twist factor (K ₂ ) is less than 2.0, the ends of the short fibers protrude from the spun yarns, resulting in a glove with a strong scratchy feel. On the other hand, if the two-ply twist coefficient (K ₂ ) is more than 6.0, the twist becomes too strong, the occurrence of double twist becomes strong, the workability is deteriorated, the tensile strength of the spun yarn is also reduced, and the texture is improved. is also inferior. A more preferable two-ply twist factor (K ₂ ) is in the range of 2.0 to 5.0. At this time, the ratio (T ₂ /T ₁ ) (%) of the single yarn ply twist number (T ₁ ) and the double yarn upper twist number (T ₂ ) of the spun yarn is 30 to 95%, more preferably 50 to 90 % range.

The spun yarn of the present invention can be produced by conventionally known spinning means by cutting and stapling organic fiber filaments having a single filament fineness of 0.8 to 10.0 dtex. A sliver is used as the staple, twisted to a predetermined twist coefficient by a ring twister or the like, and further twisted to a predetermined twist ratio by a double twister or the like.

In addition, when producing the spun yarn of the present invention, other staple fibers (for example, 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 weight of the spun yarn, and it is particularly preferred to use the para-aramid fiber for 50 to 100%.

[Knitted fabric]
The knitted or woven fabric of the present invention is produced by interweaving the fiber yarn (A) and the fiber yarn (B), or by arranging a single or a plurality of each, and applying the arranged yarn to a knitting machine or a loom. Obtained by feeding.
The ratio (mass ratio) of the fiber yarn (A) and the fiber yarn (B) to be aligned is preferably fiber yarn (A):fiber yarn (B)=10-70:90-30. If the ratio of the fiber yarn (A) is 10 or more, in addition to suppressing the amount of dust generation, improvement in wear resistance can be expected. Only. The ratio of the fiber thread (A) and the fiber thread (B) is more preferably 20-60:80-40, still more preferably 20-50:80-50.

Although the basis weight of the knitted fabric is not particularly limited, it is preferably 300 to 800 g/m ² . By setting the thickness within the above range, there is an effect of achieving a suitable balance between the thickness of the fabric and the cut resistance. More preferably 400-700 g/m ² , still more preferably 500-600 g/m ² .

When producing a knitted fabric such as a glove according to the present invention, the above-mentioned fiber yarn (A) and fiber yarn (B) are arranged through a tension adjuster whose contact surface with the yarn is satin-like. It is preferable to feed and knit computer glove knitting machine SFG or STJ (manufactured by Shima Seiki Seisakusho Co., Ltd.). After the yarn for knitting is unwound from the package, the main devices that exist in the yarn path of the knitting machine are the yarn guide plate, the first tension adjuster, the felt for oiling, the yarn break detection spring, and the second. The yarn is guided to the yarn feeder through the top spring, and finally knitted by the needle needle. These two tension adjusters are thread guides for applying stable tension to the thread, and include a washer tensor, a spring tensor, and the like.

As a surface finishing method for the thread guide, mirror finishing is generally used in addition to satin finishing. When the contact surface of the yarn guide with the yarn has a satin finish, friction with the yarn is reduced, so that fibrillation of mainly organic fibers can be suppressed in the yarn guide near the package, and subsequent The yarn guide can suppress the fragmentation of the fibrils of the organic fibers or the scraping of the fiber surfaces.

The material of the contact surface with the thread of the tension adjuster is, for example, a metal plated with satin chrome; the metal is coated with ceramics such as titanium, alumina, titanium carbide, Teflon (registered trademark), silicon, etc. ceramics such as titanium, alumina, and zirconia;

In the present invention, it is effective to use a tension adjuster, which is a yarn guide for applying tension to the yarn, having a satin-finished contact surface with the yarn. The tension adjuster is a combination of satin-finished constituent members or satin-finished constituent members (for example, the surface of the tension washer is satin-finished and the tensor shaft is made of alumina ceramic). etc. It has the effect of preventing the generation of a large amount of fibrils and shavings due to rubbing of the yarn when tension is applied to the yarn in order to stably supply the yarn. Furthermore, it is preferable to use ceramics for other thread guides, and a more excellent effect is exhibited.

In the present invention, by using the yarn described above and adjusting the knitting method, dust is generated by the JIS B 9923 tumbling method, and the number of dust particles having a particle size of 0.1 μm or more when measured with a particle counter. However, a glove showing a value of 12,000 pieces/m ³ or less per unit weight of the woven or knitted fabric is obtained. The number of dust generated per two gloves is more preferably 11,000/m ³ or less, and still more preferably 10,000/m ³ or less. It is desirable that the number of particles generated is as small as possible.

In addition, the cutting load measured by JIS T 8502 protective clothing--mechanical properties--cutting resistance test against sharp objects is in the range of 5 to 15N. The cutting load is more preferably 6N or higher, still more preferably 7N or higher, and particularly preferably 10N or higher. If the cutting load is less than 5N, the glove cannot function as a work cut resistant glove.

EXAMPLES The present invention will be described in more detail below using examples and comparative examples, but the present invention is not limited only to the following examples. Incidentally, the method for measuring each physical property value in the following examples and comparative examples is as follows.

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

[Cut resistance and cut resistance]
In accordance with JIS T 8052:2005 "Protective clothing--Mechanical properties--Test method for cut resistance against sharp objects", the cut force (N) of the palm of the glove was measured. It was determined that the greater the value of the cutting force, the more difficult it was to cut. As a measuring machine, TDM-100 manufactured by RGI was used.

[Amount of dust]
JIS B 9923-1997 (method for measuring polluted particles of clothes for clean room) using a tumbling type dust generation tester installed in a clean room (cleanliness: ISO class 5) without performing clean washing. ) Dust was generated by a tumbling method, and the number of generated dust particles of each particle size or larger was measured with a particle counter. The number of measurements was five, and the average value of the remaining measured values was converted into the amount of dust generated per two gloves, excluding the maximum and minimum values. The number of revolutions of the drum was 30 revolutions/minute, and the flow rate of the discharged air was 0.0102 m ³ /second.

[Tensile strength]
According to JIS L 1095:2010 general spun yarn test method, using a Tensilon universal testing machine, the tensile strength of the constituent yarn (aligned) was measured at a grip interval of 20 cm and a pulling speed of 20 cm/min.

[Abrasion resistance]
JIS L 1096: 2010 "Testing methods for woven and knitted fabrics", 8.19 "Abrasion strength" F-2 method (abrasive paper method).

[Evaluation of wearing gloves (fitness, hardness, tingling sensation)]
A wearing test was conducted by 5 subjects. According to EN 420: 2003 Protective gloves-General requirements and test methods 5.2, all the subjects gave Dexterity a level 5 performance evaluation, and five out of five in the sensory evaluation said that it was "good to wear". Those evaluated by 3 or more of the 5 panelists were evaluated as acceptable (○), and those evaluated by 3 or more panelists were evaluated as being unsatisfactory (X). Also, in the sensory evaluation, when 3 or more of the 5 panelists evaluated "no tingling", it was rated as (none), and when it was tingling, it was rated as (yes).

[Production example 1 (fluid-processed yarn)]
Filament thread of polyparaphenylene terephthalamide (hereinafter referred to as PPTA) fiber (manufactured by DuPont-Toray, trade name "Kevlar" (registered trademark)) having a single fiber fineness of 1.67 dtex and a total fineness of 1,670 dtex. was used. By the Taslan method using the fluid jet processing apparatus shown in FIG. 1, the overfeed rate is set to 3 to 12%, and the fluid jet processing is performed using steam as the fluid to obtain a fluid textured yarn of PPTA filaments. rice field. A non-twisted yarn was used as the fluid-processed yarn.

[Production Example 2 (spun yarn)]
As an aramid short fiber thread, a para-aramid fiber with a fineness of 1.67 dtex (“Kevlar (R) 29” manufactured by Toray DuPont Co., Ltd., tensile strength of 20.3 cN / dtex) is stapled, and the fiber length is 51 mm. , 100% para-aramid short fibers with a number of crimps of about 8 crimps/inch.
This was made into a threaded sliver in the order of opening machine, card, drawing. Next, this was set on a ring spinning machine, twisted with a twist number (T ₁ ) of 13 t/inch, a twist coefficient of 2.9, and a twist direction of Z twist, resulting in a yarn count of 20 (cotton count) and a tensile strength of 2. , 415 g of spun yarn was obtained. Two of these spun yarns were aligned, and a reverse (S) twist with a twist number (T ₂ ) of 340 t/m was applied with a double twister to obtain a double twist with a yarn count of 20/2s (cotton count) and a tensile strength of 5,259 g. got the yarn

[Production Example 3 (fluid-processed yarn)]
The same procedure as in Production Example 1 was performed except that a filament yarn of PPTA fiber (manufactured by DuPont-Toray Co., Ltd., trade name "Kevlar" (registered trademark)) having a single fiber fineness of 1.67 dtex and a total fineness of 220 dtex was used. A fluid-textured yarn was obtained by the method.

(Example 1)
When supplying one fluid-processed yarn prepared in Production Example 1 and two spun yarns prepared in Production Example 2 to a 7-gauge glove knitting machine (manufactured by Shima Seiki Seisakusho Co., Ltd.) Next, a seamless glove was knitted by a conventional method, except that two washer tensers of the yarn guide guide had a pear-skinned surface. The two gloves weighed 30.6 g.
That is, the thread path portion of the tensor shaft of the washer tensor is made of alumina ceramic guide (YM99C manufactured by Yuasa thread road Co., Ltd., density 3.8, hardness 1,800, Rmax 1.5 μm), and the upper and lower tension washers are satin chrome plated. Other yarn guides were made of alumina ceramic, satin chromium plated, and non-plated guides were mixed without changing the specifications of the knitting machine.

In the glove produced in Example 1, the number of particles with a particle size of 0.1 μm or more generated was 12,000/m ³ or less per unit area of the glove (low dust generation), and the cutting force was 11.6 N. . There was no tingling sensation, and the wearing evaluation was also good. As a result, a glove with improved tensile strength and abrasion resistance and low dust generation was obtained as compared with a glove knitted from spun yarn alone.

(Comparative example 1)
A seamless glove was knitted in the same manner as in Example 1, except that the five spun yarns produced in Production Example 2 were used. The glove thus obtained was excellent in cut resistance, but had a large number of dust generation, a tingling sensation, and was inferior in wearing evaluation.

(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 spun yarns produced in Production Example 2 were aligned. .

(Comparative example 2)
A seamless glove was knitted in the same manner as in Example 1, except that the three spun yarns produced in Production Example 2 were used.

Table 1 summarizes the glove configuration and evaluation results.

From Table 1, using an organic fiber yarn with a fineness of 220 to 1,700 dtex that has been fluid-jetted at an overfeed rate of 3 to 12% and a spun yarn (two-ply yarn) to knit and weave a knitted fabric. Compared to gloves made from conventional spun yarn, the cut resistance is 5N to 15N and the number of dust particles with a particle size of 0.1 μm or more is 12,000/m ³ or less per knitted fabric basis weight. It can be seen that a knitted or woven fabric with low dust generation and excellent cut resistance, abrasion resistance, and tensile strength can be obtained.

The knitted or woven fabric of the present invention is useful as work gloves or work clothes that are relatively resistant to contamination by dust, etc., even though it is a knitted or woven fabric using spun yarn. Therefore, it is useful as gloves and clothes for work in fisheries, agriculture, food industry, medical care, high-tech industry, etc., or as gloves and clothes for sports.

1 Organic fiber thread 2 Feed roller 3 Fluid processing nozzle 4 Fluid inlet 5 Delivery roller 6 Winding roller 7 Winding bobbin

Claims (5)

A fiber yarn (A) consisting only of fluid jet processed organic fibers having a fineness of 220 to 1,700 dtex and a fiber yarn (B) consisting only of organic fibers spun from short fiber bundles are mixed and woven. A knitted fabric characterized by: The knitted fabric according to claim 1, comprising 10 to 70 mass% of the fiber thread (A) and 90 to 30 mass% of the fiber thread (B). The number of multifilaments of the fiber yarn (A) is 1,400 or less, and
The single fiber fineness of the fiber thread (B) is 5 dtex or less,
The knitted fabric according to claim 1 or 2. The knitted fabric according to any one of claims 1 to 3, wherein the organic fibers constituting the fiber thread (A) and the fiber thread (B) are para-aramid fibers. The knitted fabric according to any one of claims 1 to 4, which simultaneously satisfies the following (1) and (2).
(1) JIS B 9923 Dust is generated by the tumbling method, and the number of dust particles with a particle size of 0.1 μm or more when measured with a particle counter is a value of 12,000 particles/m ³ or less per basis weight of the woven or knitted fabric. indicates
(2) The value of the cutting load measured by JIS T 8502 protective clothing-mechanical properties-cut resistance test against sharp objects is in the range of 5 to 15N.

Images