TWI718976B - Yarn of staple fibers from multi-filaments by stretching and controlled breaking and articles made therefrom - Google Patents

Abstract

A single-strand yarn includes a plurality of intimately associated staple fibers. The plurality of intimately associated staple fibers are made from N strands of of multi-filaments by stretching and controlled breaking, and then are spun through a spinning process, where N is a natural number. Within a sampling length of the single-strand yarn, according to the invention, a ratio of the number of staple fibers, whose length is equal to or greater than 60% of a setup fiber length to the total number of staple fibers, is equal to or greater than 60 %. The sampling length is equal to or less than 10 meters. The setup fiber length is equal to or less than 65 mm. The dispersion of the weight distribution in the average length of the single-strand yarn according to the invention is equal to or less than 60%.

Description

Yarns and products made from short fibers obtained by stretching and controlling the breaking of long fibers

The present invention relates to a single-ply yarn, ply yarn and textiles woven from the short fiber obtained by stretching and controlling the breakage of long fibers, and, in particular, to a short fiber obtained by stretching and controlling the breakage of the long fiber Single-ply yarns, ply yarns and textiles woven from fibers with high strength and high diameter uniformity.

Continuous long fibers made of various materials will be further shortened into short fibers and spun into yarns due to application and cost considerations. These yarns spun from short fibers have poorer properties than continuous long fiber bundles of the same diameter and the same material, including strength and diameter uniformity. Stretch-break spinning is to improve the spinning technology to obtain the properties closer to the same fineness and the same material long fiber bundle, especially for high-performance fibers, such as carbon fiber, metal fiber, and aromatic polyamide fiber. (aramid polyamide fiber), Ultra High Molecular Weight Polyethylene (UHMWPE) fiber, polybenzoxazol (PBO) fiber, polyarylate liquid crystal fiber or glass fiber are more important.

Take the Kevlar® fiber (aromatic polyamide synthetic fiber) manufactured by DuPont as an example. The yarn thickness is 350 Denier (Danier, D) and the strength of a single long fiber bundle is as high as 10kg. However, the 350D single-strand Kevlar® long fiber bundle is very expensive. In commercial applications, this expensive yarn is rarely used to make textiles. Instead, the traditional yarn made of multiple Kevlar® staple fibers is twisted. The twisted yarn of Kevlar® staple fiber with a thickness equivalent to 350D single-strand Kevlar® long fiber bundle is a 30-inch double-strand yarn, but its strength is only 3.6~4kg.

Due to the irregular shape of the fiber filaments and yarns, and the surface of the yarns have hairiness (short hairs of protruding fibers), the diameter is rarely used to indicate its thickness. Yarns composed of long-fiber bundles are usually expressed in deniers for their thickness. Danny’s definition is the weight of a 9000-meter-long fiber in grams at a given moisture regain. Yarns made by twisting multiple short fibers are mostly expressed in English counts (English counts) or public counts (metric counts). British count is defined as one British count for every pound (0.4536kg) of fiber or yarn length of 840 yards under a given moisture regain. Public count is defined as the number of meters in length per gram of fiber or yarn under a given moisture regain.

In order to improve the strength and diameter uniformity of the yarn formed by twisting multiple short fibers, the prior art will break the long fibers into short fibers by the breaking method, and then twist them into yarns. The stretch-breaking method is to feed the long fiber bundle raw materials into the stretch-breaking machine to obtain the stretch-broken fibers. The prior art breaking machine is composed of a complex array of rollers that are combined up and down in pairs, combined up and down in the shape of a product, or combined up and down in pairs and combined with the combination of the product and word. The distance between the multiple number of rollers in the stretch-breaking machine is set as the length of the broken fiber, and the fiber is broken by the speed difference of the multiple number of rollers to obtain a broken sliver with fiber length distribution. The stretch-off sliver has a length weight distribution. The broken sliver is then fed into the spinning machine and can be spun directly into single-strand yarn.

According to the theory of spinning engineering, the strength uniformity of a single-strand yarn mainly depends on the fiber length distribution in the yarn. Moreover, the uniformity of the diameter of a single-strand yarn mainly depends on the weight distribution of the average length of the yarn: (1) Under a fixed yarn length, because the length of the broken fiber is not uniform, the length of the fiber in the yarn will be distributed. Produce a degree of dispersion. The length of the broken fiber is called the setup fiber length. The set fiber length is equal to the distance from the grip point of the front exit roller of the spinning machine to the grip point of the rear roller, and the length of the fiber in the yarn Distribution dispersion refers to the ratio of the number of short fibers with the length of multiple short fibers equal to or greater than 60% of the set fiber length to the total number of multiple short fibers within a fixed yarn length. The lower the ratio, the greater the dispersion. Larger means that the fiber length uniformity in the single-strand yarn is worse. The worse the fiber length uniformity is, the worse the cohesion force between the fibers will be. The worse cohesion force will seriously affect the stress transmission, resulting in the worse the strength uniformity. Conversely, the smaller the dispersion of the fiber length distribution in the yarn, the better the uniformity of the yarn strength; (2) Under a fixed set fiber length, the weight distribution of the average length of the single strand yarn will also produce a dispersion. The weight of the average length is defined as the gram weight of a single strand of yarn per meter. The dispersion of the weight distribution of the average length of a single strand of yarn refers to the deviation range of the individual measured weight from the average weight under multiple sampling. The greater the dispersion, the greater the weight. The greater the difference in fiber distribution per unit volume of a single-strand yarn is mainly because there are too many free fibers. Free fibers will migrate freely during the spinning process. This free migration is uncontrollable, so it will be in the spinning process. The formation of thick and thin yarns, cotton knots or knots seriously affects the diameter uniformity of the yarn. On the contrary, the smaller the dispersion of the weight distribution of the average length of the yarn, the better the diameter uniformity of the yarn.

Therefore, the traditional spinning process is actually controlling the dispersion of the length distribution of short fibers and the dispersion of the weight distribution of the average length of the yarn. Therefore, the traditional spinning technology needs to go through the process of blowout process, lap process, draw process, roving process, and spinning process to reduce the above-mentioned two dispersions. Differently, the stretch-break spinning technology only needs to go through the stretch-breaking process, the drawing process and the spinning process. As the process is shortened, the stretch-break spinning technology increases the above two dispersions. Therefore, the dispersion of the fiber length distribution of the yarn spun by the stretch-break method and the dispersion of the weight distribution of the average length of the yarn are much higher than that of the yarn spun by the traditional spinning technology.

In addition, in traditional spinning technology, due to the efficiency requirements of quality control sampling, the weight distribution of the average length of the yarn and the length distribution of the short fiber are both too long in the sampling length of the test. Generally, the sampling length for testing is 30~100 m, which has little effect on traditional spinning technology that has achieved good dispersion control, but for yarns that have only undergone draw-breaking process, drawing process and spinning process with high dispersion, Too long sampling length will conceal the problem of dispersion and fail to show the true strength and diameter uniformity of the yarn, and finally will lead to a large gap between the statistical value and the actual application.

At present, stretch-broken spinning is mainly used in high-performance fiber spinning, such as carbon fiber, metal fiber, aromatic polyamide (aramid polyamide) fiber, ultra-high polymerization degree polyethylene (UHMWPE) fiber, polybenzo Spinning of fibers such as oxazole (PBO), fiber polyarylate liquid crystal fiber or glass fiber. Because high-performance fibers are costly in the production of small-diameter long fiber bundles, the relatively low-cost large-diameter high-performance fiber long fiber bundles can be used to spin into finer high-performance short fibers through stretch-break spinning. Yarn. At the same time, stretch-broken spinning makes it easier to produce long staple yarns. Compared with the strength of continuous long fibers, the longer the length of the long staple fibers, the closer the strength of the resulting yarn will be to continuous The strength of long fibers. Therefore, considering the manufacturing cost and strength of the yarn, in textile manufacturing, the yarn produced by the stretch-broken spinning method has the opportunity to replace the thin-diameter long fiber bundle, for example, the 50-inch double-strand stretch-broken aromatic The yarn spun from polyamide fiber replaces the 200D long aromatic polyamide fiber bundle. However, if the length of the broken fiber is too short, the strength loss of the yarn spun from the broken fiber will increase. Therefore, increasing the length of the fiber at break is very important for the yarn forming process of the high-performance fiber by the break method. Generally speaking, the longer the length of the broken fiber, the less the strength loss will be. The high-performance fiber yarn spun by the breaking method can even reach more than 70% of the strength of the high-performance long fiber with the same diameter. In addition to the control of the length of the broken fiber, the better the control of the above two dispersions is needed, so that the strength and diameter uniformity of the yarn formed by the stretch-breaking method can be closer to the same fineness of long fiber bundles. .

Please refer to US Patent Publication No. 482563 for the prior art of forming yarns with high-performance fibers using the stretch-break method. US Patent Publication No. 482563 discloses the use of a stretch-breaking method to make carbon fiber yarns and control the average length of the broken carbon fibers. However, judging by the theory of yarn strength uniformity, the average length of the stretch-broken fiber is not a key factor affecting the strength of the stretch-broken fiber. The yarn-forming of the stretch-broken fiber should be controlled by the dispersion of the yarn length distribution. degree. Because the prior art stretch-breaking method has poor control over the dispersion of yarn length distribution, U.S. Patent Publication No. 482563 discloses the use of the stretch-breaking method to make carbon fiber yarns. The average length of carbon fibers cannot be obtained from the stretch-breaking method alone. To ensure the strength of carbon fiber yarn.

In addition, with regard to textiles made from high-performance fibers using the stretch-breaking method to form yarns and then woven, due to the problem of yarn diameter uniformity, the smoothness of the textiles will be seriously affected, which will cause problems in their use. For related prior art, please refer to the United States Patent Publication No. 6756330 and U.S. Patent Publication No. 20130008209. Both of these patents disclose the stretch-breaking metal fiber yarn and the textiles woven by the knitting process. This kind of knitted fabric is used as a high-temperature separation fabric. In the process of bending the glass sheet, it is placed between the bending mold and the glass, or used to cover the mold ring or the mold ring and the handling facility for transporting the glass sheet during the forming process. In practice, the applicant of these two patent cases, Bekaert, uses stainless steel fibers to manufacture the above knitted fabrics, and considering the strength and cost of the knitted fabrics, the tensile-breaking stainless steel fibers are currently used to form yarns and then woven into knitted fabrics. US Patent Publication No. 6,756,330 discloses increasing the number of needles or density of the fabric to achieve the smoothness of the knitted fabric, and using a smoother knitted fabric to reduce the indentation produced during glass pressing. US Patent Publication No. 20130008209 discloses a knitted fabric woven with yarns, and the yarns include at least 3 strands of yarn or single strands of yarn. Each yarn or single yarn has an equivalent bundle diameter equal to or different by up to 40% to achieve the smoothness of the knitted fabric. The smoother knitted fabric is used to reduce the indentation produced during glass pressing. However, judging by the theory of yarn diameter uniformity, it is the yarn diameter uniformity that mainly affects the smoothness of the knitted fabric, not the difference between the number of needles or density of the fabric and the equivalent bundle diameter of different strands of yarn. It is conceivable that if yarns with uneven diameters are woven into knitted fabrics, the uneven thickness of the yarns themselves will cause irregular undulations on the surface of the fabric, so increase the yarn density of the knitted fabric or reduce the yarn density of different strands. The difference in equivalent beam diameter cannot change the irregular undulations of the fabric. At present, the number of surface neps on the surface of a knitted fabric made of stainless steel fiber yarn by the tensile method is more than 50/m ² .

Therefore, one of the technical problems that the present invention intends to solve is to provide a single-stranded yarn, plyed yarn, and woven yarns made from short fibers obtained by stretching and controlled breaking of long fibers and having high strength and high diameter uniformity. Textiles. According to the present invention, the smoothness of the textile made by fiber-forming yarn and then woven by the stretch-break method is better.

The single-ply yarn according to a preferred embodiment of the present invention includes a plurality of tightly coupled short fibers. Multiple tightly bound short fibers are obtained by stretching and controlling the breaking length of the first long fiber bundle of N strands, and then spun through a spinning process, where N is a natural number. Within the sampling length of the single-strand yarn itself, the ratio of the number of short fibers with a length equal to or greater than 60% of the set fiber length to the total number of multiple short fibers among the multiple short fibers is equal to or greater than 60%. The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%. The N-strand first long fiber bundle can be made of copper, copper-nickel alloy (CuNi alloy), copper-nickel-silicon alloy (CuNiSi alloy), copper-nickel-zinc alloy (CuNiZn alloy), copper-nickel-tin alloy (CuNiSn alloy), copper Chromium alloy (CuCr alloy), copper silver alloy (CuAg alloy), silver (silver), gold (gold), lead (lead), zinc (zinc), aluminum (aluminum), nickel (nickel), brass (brass) , Phosphor bronze, beryllium copper, nichrome, tungsten, platinum, palladium, CuW alloy, stainless steel steels), 316L stainless steel, titanium (titanium alloys), nickel-chromium-molybdenum tungsten alloy (Ni-Cr-Mo-W alloy), zirconium (zirconium), zirconium alloy series (zirconium alloys), tantalum ( tantalum), HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester material, polyamide material, aromatic polyamide Amine (aramid polyamide) materials, polyacrylic materials, polyethylene materials, Ultra High Molecular Weight Polyethylene materials, polypropylene materials, cellulose Cellulose materials, protein materials, elastomeric materials, polytetrafluoroethylene materials, polybenzoxazol (PBO) materials, polyarylate liquid crystal materials, Polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive or non-conductive materials.

In a specific embodiment, the single second long fiber bundle is formed of at least one material forming the N first long fiber bundles. The first fineness of the single-strand yarn is the same as the second fineness of the single-strand second long fiber bundle. The single-strand yarn has a first strength, and the single-strand second long fiber bundle has a second strength, and the first strength is equal to or greater than 70% of the second strength.

The ply yarn according to a preferred embodiment of the present invention includes M single-ply yarn. M-strand single-strand yarns are combined or twisted together, where M is an integer equal to or greater than 2. Each single strand of yarn contains multiple tightly bound short fibers. Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundles of N strands, and then spun through a spinning process, where N is a natural number. The single-strand yarn itself is within the sampling length, and the ratio of the number of short fibers whose length is equal to or greater than 60% of the set fiber length to the total number of multiple short fibers among the multiple short fibers is equal to or greater than 60% . The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%. The N-strand first long fiber bundle can be selected from copper, copper-nickel alloy, copper-nickel-silicon alloy, copper-nickel-zinc alloy, copper-nickel-tin alloy, copper-chromium alloy, copper-silver alloy, silver, gold, lead, zinc, aluminum, Nickel, brass, phosphor bronze, beryllium copper alloy, nickel chromium alloy, tungsten, platinum, palladium, copper tungsten alloy, stainless steel series, 316L stainless steel, titanium, titanium alloy series, nickel chromium molybdenum tungsten alloy, zirconium, zirconium alloy series, Tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester materials, polyamide materials, aromatic polyamide materials, polyacrylonitrile Materials, polyethylene materials, ultra-high polymerization degree polyethylene fiber materials, polypropylene materials, cellulose materials, protein materials, elastic fiber materials, polyperfluoroethylene materials, polybenzoxazole fiber materials, Polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive materials, non-conductive materials are formed.

According to a preferred embodiment of the present invention, the textile is woven by the first single-ply yarn or ply yarn through a woven process, a non-woven process, a knitting process, a warp knitting process, a weaving process, or other weaving processes . Plyed yarns include M second single-ply yarns that are merged or twisted together, where M is an integer equal to or greater than 2. Each of the first single-strand yarn and each second single-strand yarn includes a plurality of tightly coupled short fibers. Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundles of N strands, and then spun through a spinning process, where N is a natural number. The single-strand yarn itself is within the sampling length, and the ratio of the number of short fibers whose length is equal to or greater than 60% of the set fiber length to the total number of multiple short fibers among the multiple short fibers is equal to or greater than 60%. The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%. The N-strand first long fiber bundle can be selected from copper, copper-nickel alloy, copper-nickel-silicon alloy, copper-nickel-zinc alloy, copper-nickel-tin alloy, copper-chromium alloy, copper-silver alloy, silver, gold, lead, zinc, aluminum, Nickel, brass, phosphor bronze, beryllium copper alloy, nickel chromium alloy, tungsten, platinum, palladium, copper tungsten alloy, stainless steel series, 316L stainless steel, titanium, titanium alloy series, nickel chromium molybdenum tungsten alloy, zirconium, zirconium alloy series, Tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester materials, polyamide materials, aromatic polyamide materials, polyacrylonitrile Materials, polyethylene materials, ultra-high polymerization degree polyethylene fiber materials, polypropylene materials, cellulose materials, protein materials, elastic fiber materials, polyperfluoroethylene materials, polybenzoxazole fiber materials, Polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive materials, non-conductive materials are formed.

In a specific embodiment, the number of neps on the surface of the textile according to the present invention is equal to or less than 20/m ² .

Different from the prior art, according to the present invention, the single-ply yarn or each yarn in the ply yarn itself is within a sampling length of no more than 10 meters, and the length of multiple short fibers is equal to or greater than the set fiber length The ratio of 60% of the number of short fibers to the total number of multiple short fibers is equal to or greater than 60%, and the fiber length is not less than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%. Therefore, according to the present invention, the single-ply yarn and the double-ply yarn have high strength and high diameter uniformity. In addition, textiles made from fibers formed into yarns and woven by the stretch-break method according to the present invention have better smoothness.

The advantages and spirit of the present invention can be further understood from the following detailed description of the invention and the accompanying drawings.

The invention uses short fibers obtained by stretching and controlling the breaking of long fibers to be spun into single-ply yarns, ply yarns and textiles woven therefrom. In the present invention, by controlling the stretch-breaking process, the dispersion of the length distribution of the fibers in the yarn is small, and the dispersion of the weight distribution of the average length of the yarn is smaller, so that the single-stranded yarn and the double-plyed yarn according to the present invention have high strength, High diameter uniformity. According to the present invention, the smoothness of the textile made by fiber-forming yarn and then woven by the stretch-break method is better. A number of preferred specific embodiments of the present invention are described in detail below.

The single-ply yarn according to a preferred embodiment of the present invention includes a plurality of tightly coupled short fibers. Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundles of N strands, and then spun through a spinning process, where N is a natural number. The first long fiber bundle of N strands is fed to the stretch-breaking machine to obtain a broken sliver, and then the broken sliver is fed into the spinning machine to spin the single-stranded yarn according to the present invention.

In particular, within the sampling length of the single-stranded yarn itself, the ratio of the number of short fibers whose length is equal to or greater than 60% of the set fiber length to the total number of short fibers among the multiple short fibers is equal to or greater than 60 %. The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%.

The N-strand first long fiber bundle can be selected from copper, copper-nickel alloy, copper-nickel-silicon alloy, copper-nickel-zinc alloy, copper-nickel-tin alloy, copper-chromium alloy, copper-silver alloy, silver, gold, lead, zinc, aluminum, Nickel, brass, phosphor bronze, beryllium copper alloy, nickel chromium alloy, tungsten, platinum, palladium, copper tungsten alloy, stainless steel series, 316L stainless steel, titanium, titanium alloy series, nickel chromium molybdenum tungsten alloy, zirconium, zirconium alloy series, Tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester materials, polyamide materials, aromatic polyamide materials, polyacrylonitrile Materials, polyethylene materials, ultra-high polymerization degree polyethylene fiber materials, polypropylene materials, cellulose materials, protein materials, elastic fiber materials, polyperfluoroethylene materials, polybenzoxazole fiber materials, Polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive materials, non-conductive materials are formed. Thereby, the single-strand yarn according to the present invention can be composed of single-material fibers or mixed-material fibers, and is not limited to high-performance fibers.

In a specific embodiment, the single second long fiber bundle is formed of at least one material forming the N first long fiber bundles. The first fineness of the single-strand yarn is the same as the second fineness of the single-strand second long fiber bundle. In particular, the single-strand yarn has a first strength, and the single-strand second long fiber bundle has a second strength, and the first strength is equal to or greater than 70% of the second strength.

The ply yarn according to a preferred embodiment of the present invention includes M single-ply yarn. M-strand single-strand yarns are combined or twisted together, where M is an integer equal to or greater than 2.

Each single strand of yarn contains multiple tightly bound short fibers. Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundles of N strands, and then spun through a spinning process, where N is a natural number. The N-strand first long fiber bundle is fed to the stretch-breaking machine to obtain a broken sliver, and then the broken sliver is fed into the spinning machine to spin a single strand of yarn.

In particular, the single-strand yarn itself is within the sampling length, and the ratio of the number of short fibers whose length is equal to or greater than 60% of the set fiber length to the total number of the multiple short fibers among the multiple short fibers is equal to or More than 60%. The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%.

The N-strand first long fiber bundle can be selected from copper, copper-nickel alloy, copper-nickel-silicon alloy, copper-nickel-zinc alloy, copper-nickel-tin alloy, copper-chromium alloy, copper-silver alloy, silver, gold, lead, zinc, aluminum, Nickel, brass, phosphor bronze, beryllium copper alloy, nickel chromium alloy, tungsten, platinum, palladium, copper tungsten alloy, stainless steel series, 316L stainless steel, titanium, titanium alloy series, nickel chromium molybdenum tungsten alloy, zirconium, zirconium alloy series, Tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester materials, polyamide materials, aromatic polyamide materials, polyacrylonitrile Materials, polyethylene materials, ultra-high polymerization degree polyethylene fiber materials, polypropylene materials, cellulose materials, protein materials, elastic fiber materials, polyperfluoroethylene materials, polybenzoxazole fiber materials, Polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive materials, non-conductive materials are formed. Thereby, the plied yarn according to the present invention can be composed of single-material fibers or mixed-material fibers, and is not limited to high-performance fibers.

Similarly, in a specific embodiment, the single second long fiber bundle is formed of at least one material that forms the N first long fiber bundles. The first fineness of the single-strand yarn is the same as the second fineness of the single-strand second long fiber bundle. In particular, the single-strand yarn has a first strength, and the single-strand second long fiber bundle has a second strength, and the first strength is equal to or greater than 70% of the second strength.

According to a preferred embodiment of the present invention, the textile is woven by the first single-ply yarn or ply yarn through a woven process, a non-woven process, a knitting process, a warp knitting process, a weaving process, or other weaving processes . Plyed yarns include M second single-ply yarns that are merged or twisted together, where M is an integer equal to or greater than 2.

Each of the first single-strand yarn and each second single-strand yarn includes a plurality of tightly coupled short fibers. Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundles of N strands, and then spun through a spinning process, where N is a natural number. The N-strand first long fiber bundle is fed to the stretch-breaking machine to obtain a broken sliver, and then the broken sliver is fed into the spinning machine to spin a single strand of yarn.

In particular, the single-strand yarn itself is within the sampling length, and the ratio of the number of short fibers whose length is equal to or greater than 60% of the set fiber length to the total number of the multiple short fibers among the multiple short fibers is equal to or More than 60%. The sampling length is equal to or less than 10 meters, and the fiber length is set to be equal to or greater than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%.

The N-strand first long fiber bundle can be selected from copper, copper-nickel alloy, copper-nickel-silicon alloy, copper-nickel-zinc alloy, copper-nickel-tin alloy, copper-chromium alloy, copper-silver alloy, silver, gold, lead, zinc, aluminum, Nickel, brass, phosphor bronze, beryllium copper alloy, nickel chromium alloy, tungsten, platinum, palladium, copper tungsten alloy, stainless steel series, 316L stainless steel, titanium, titanium alloy series, nickel chromium molybdenum tungsten alloy, zirconium, zirconium alloy series, Tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester materials, polyamide materials, aromatic polyamide materials, polyacrylonitrile Materials, polyethylene materials, ultra-high polymerization degree polyethylene fiber materials, polypropylene materials, cellulose materials, protein materials, elastic fiber materials, polyperfluoroethylene materials, polybenzoxazole fiber materials, Polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, glass, or other conductive materials, non-conductive materials are formed. Thereby, the first single-strand yarn and each second single-strand yarn according to the present invention can be composed of single-material fibers or mixed-material fibers, and are not limited to high-performance fibers.

Similarly, in a specific embodiment, the single second long fiber bundle is formed of at least one material that forms the N first long fiber bundles. The first single-strand yarn and each second single-strand yarn have the same first fineness as the second single-strand long fiber bundle. In particular, the first single-stranded yarn and each second single-stranded yarn have a first strength, and the second single-strand fiber bundle has a second strength, and the first strength is equal to or greater than 70% of the second strength. .

In a specific embodiment, the number of neps on the surface of the textile according to the present invention is equal to or less than 30/m ² . Obviously, compared with the prior art textiles that use the stretch-breaking method to form yarns and then woven textiles, the textiles that use the stretch-breaking method to form yarns and then woven according to the present invention have better smoothness.

In a specific embodiment, the N-strand first long fiber bundle is formed of 316L stainless steel, and the textile is woven by a knitting process. The knitted textile can be used as a partition cloth between the mold and the glass used in the molding process of the glass plate, or used to cover the mold ring or the mold ring and the handling facility for transporting the glass plate during the molding process.

In an example, according to the present invention, a 3000D double-stranded Kevlar® long fiber bundle is fed into a stretching machine to obtain a broken sliver, and then the broken sliver is fed to a spinning machine to spin a 30-inch yarn. Single strand yarn. The 30-inch single-stranded yarn is at a sampling length of 1 meter, and the ratio of the number of short fibers in the yarn equal to or greater than 60% of the set fiber length to the total number of multiple short fibers is 60~75 %, the weight distribution dispersion of the average length of the yarn is controlled within 15-25%. Compared with yarns of the same diameter, the strength of 350D single-strand Kevlar® long fiber bundle is as high as 10kg, and the strength of 30-inch double-stranded yarn twisted by Kevlar® staple fiber is only 3.6~4kg. Example 30 of the present invention The strength of British-count double-ply yarn is 7.5~8kg. Obviously, the single-ply yarn and ply yarn spun from short fibers obtained by stretching and controlling the breakage of long fibers in the present invention have high strength and high diameter uniformity.

In another example, a 6.5-inch double-stranded 316L stainless steel fiber yarn spun into a short fiber obtained by stretching and controlling the breakage of long fibers according to the present invention is woven into a knitted fabric. In the process of bending the glass sheet, it is placed between the bending mold and the glass, or used to cover the mold ring or the mold ring and the handling facility for transporting the glass sheet during the forming process. Under the yarn sampling length of 1 meter, the 6.5-inch double-strand 316L stainless steel fiber yarn according to the present invention has a fiber length distribution dispersion of 65~70% and a weight distribution dispersion of the average yarn length. Control in 35~45%. The number of neps or indurations on the surface of the knitted fabric in this example is measured to be less than 20 per square meter. Obviously, compared with the prior art that uses the stretch-breaking method to form yarns and then weaves into a textile, the textiles that use the stretch-breaking method to form yarns and then woven according to the present invention have better smoothness.

From the above detailed description of the present invention, it can be clearly understood that the single-ply yarn according to the present invention or each ply yarn in the ply yarn itself is within a sampling length of not more than 10 meters, among multiple short fibers The ratio of the number of short fibers with a length equal to or greater than 60% of the set fiber length to the total number of multiple short fibers is equal to or greater than 60%, and the set fiber length is not less than 65mm. In addition, the weight distribution dispersion of the average length of the single strand yarn is equal to or less than 60%. Therefore, according to the present invention, the single-ply yarn and the double-ply yarn have high strength and high diameter uniformity. In addition, textiles made from fibers formed into yarns and woven by the stretch-break method according to the present invention have better smoothness.

Based on the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, rather than limiting the aspect of the present invention by the preferred embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalent arrangements within the scope of the patent for which the present invention is intended. Therefore, the aspect of the patent scope applied for by the present invention should be interpreted in the broadest way based on the above description, so as to cover all possible changes and equivalent arrangements.

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Claims (8)

A single strand yarn comprising: Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundle of N strands, and then spun through a spinning process. N is a natural number, wherein the single strand yarn itself is a natural number. Within the sampling length, the ratio of the number of short fibers in the plurality of short fibers whose length is equal to or greater than 60% of a set fiber length to the total number of the plurality of short fibers is equal to or greater than 60%, the The sampling length is equal to or less than 10 meters, the set fiber length is equal to or greater than 65mm, and the weight distribution dispersion of the average length of the single-strand yarn is equal to or less than 60%, and the N-strand first long fiber The bundle system is selected from copper (copper), copper-nickel alloy (CuNi alloy), copper-nickel-silicon alloy (CuNiSi alloy), copper-nickel-zinc alloy (CuNiZn alloy), copper-nickel-tin alloy (CuNiSn alloy), copper-chromium alloy (CuCr alloy), copper-silver alloy (CuAg alloy), silver (silver), gold (gold), lead (lead), zinc (zinc), aluminum (aluminum), nickel (nickel), brass (brass), phosphor bronze ( phosphor bronze, beryllium copper, nichrome, tungsten, platinum, palladium, CuW alloy, stainless steels, 316L Stainless steel, titanium, titanium alloys, Ni-Cr-Mo-W alloy, zirconium, zirconium alloys, tantalum, HASTELLOY Alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester material, polyamide material, aramid polyamide ) Materials, polyacrylic materials, polyethylene materials, Ultra High Molecular Weight Polyethylene materials, polypropylene materials, cellulose Materials, protein materials, elastic fibers (elastomeric) materials, polytetrafluoroethylene materials, polybenzoxine Polybenzoxazol (PBO) material, polyarylate liquid crystal material, polyetherketone material, carbon material, bamboo charcoal, and glass are formed of at least one material. The single-strand yarn according to claim 1, wherein a single-strand second long-fiber bundle is formed of the at least one material forming the N-strand first long-fiber bundle, and one of the single-strand yarns is a first thin The degree system is the same as the second fineness of the single second long fiber bundle, the single-strand yarn has a first strength, the single second long fiber bundle has a second strength, and the first strength is equal to Or greater than 70% of the second strength. A plied yarn comprising: M single-strand yarns are combined or twisted together. M is an integer equal to or greater than 2. Each single-strand yarn contains: multiple tightly bound short fibers, composed of N strands of the first long fiber The bundle is obtained by stretching and controlled breaking, and then spun through a spinning process. N is a natural number, where the single strand yarn itself is within a sampling length, and the length of the multiple short fibers is equal to or greater than The ratio of the number of short fibers of 60% of a set fiber length to the total number of one of the multiple short fibers is equal to or greater than 60%, the sampling length is equal to or less than 10 meters, and the set fiber length is Equal to or greater than 65mm, and the weight distribution dispersion of the average length of the single stranded yarn is equal to or less than 60%, and the first long fiber bundle of N strands is selected from copper, copper-nickel alloy ( CuNi alloy, CuNiSi alloy, CuNiZn alloy, CuNiSn alloy, CuCr alloy, CuAg alloy, silver ), gold, lead, zinc, aluminum, nickel, brass, phosphor bronze, beryllium copper, nickel chromium Alloy (nichrome), tungsten (tungsten), platinum (platinum), palladium (palladium), copper tungsten alloy (CuW alloy), stainless steel (stainless steels), 316L stainless steel, titanium (titanium), titanium alloy series (titanium alloys) , Ni-Cr-Mo-W alloy (Ni-Cr-Mo-W alloy), zirconium (zirconium), zirconium alloys (zirconium alloys), tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series , FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester material, polyamide material, aramid polyamide material, polyacrylic material, polyethylene Polyethylene materials, Ultra High Molecular Weight Polyethylene materials, polypropylene materials, cellulose materials, protein materials, elastic fibers ) Materials, polytetrafluoroethylene materials, polybenzoxazol (PBO) materials, polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal And formed by at least one material in the group consisting of glass. The twisted yarn according to claim 3, wherein a single second long fiber bundle is formed of the at least one material forming the N first long fiber bundles, and one of the first single strands of each yarn The fineness is the same as the second fineness of the single second long fiber bundle, each single strand of yarn has a first strength, the single second long fiber bundle has a second strength, and the first The strength is equal to or greater than 70% of the second strength. A textile consisting of a first single-ply yarn or a double-ply yarn selected from the group consisting of a woven process, a non-woven process, a knitting process, a warp knitting process, and a weaving process A woven fabric, the plied yarn includes M strands of second single stranded yarns that are combined or twisted together, M is an integer equal to or greater than 2, the first single stranded yarn and each strand of the second single stranded yarn Ply yarns include: Multiple tightly bound short fibers are obtained by stretching and controlled breaking of the first long fiber bundle of N strands, and then spun through a spinning process. N is a natural number, wherein the single strand yarn itself is Within a sampling length, the ratio of the number of short fibers in the plurality of short fibers whose length is equal to or greater than 60% of a set fiber length to the total number of the plurality of short fibers is equal to or greater than 60%, The sampling length is equal to or less than 10 meters, the set fiber length is equal to or greater than 65mm, and the dispersion of the weight distribution of an average length of the single strand yarn is equal to or less than 60%, and the first length of the N strand The fiber bundle is selected from copper, copper-nickel alloy (CuNi alloy), copper-nickel-silicon alloy (CuNiSi alloy), copper-nickel-zinc alloy (CuNiZn alloy), copper-nickel-tin alloy (CuNiSn alloy), copper-chromium alloy ( CuCr alloy, CuAg alloy, silver, gold, lead, zinc, aluminum, nickel, brass, phosphor bronze (phosphor bronze), beryllium copper, nichrome, tungsten, platinum, palladium, CuW alloy, stainless steels, 316L stainless steel, titanium, titanium alloys, Ni-Cr-Mo-W alloy, zirconium, zirconium alloys, tantalum, HASTELLOY alloy series, nickel alloy series, MONEL alloy series, ICONEL alloy series, FERRALIUM alloy, NITRONIC alloy series, CARPENTER alloy, polyester material, polyamide material, aromatic polyamide (aramid) polyamide materials, polyacrylic materials, polyethylene materials, Ultra High Molecular Weight Polyethylene materials, polypropylene materials, cellulose materials ) Materials, protein materials, elastic fiber materials, polytetrafluoroethylene materials, polybenzo Polybenzoxazol (PBO) materials, polyarylate liquid crystal materials, polyetherketone materials, carbon materials, bamboo charcoal, and glass are formed of at least one material. The textile according to claim 5, wherein a single second long fiber bundle is formed of the at least one material forming the N first long fiber bundle, the first single yarn and each second The first fineness of the single-strand yarn is the same as the second fineness of the single-strand second long fiber bundle. The first single-strand yarn and each second single-strand yarn have a first Strong, the single second long fiber bundle has a second strong, the first strong is equal to or greater than 70% of the second strong. The textile according to claim 6, wherein the number of neps on the surface of one of the textiles is equal to or less than 20/m ² . The textile according to claim 7, wherein the N-strand first long fiber bundle is formed of 316L stainless steel, and the textile is woven by the knitting process.