JP2010001588A - Method for producing low rate blended yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low rate blended yarn which is blended at a low rate, is uniformly blended, can evenly express the performance of a blended raw material over the whole body of the yarn, and is advantageous on the aspects of quality and cost. <P>SOLUTION: The method for producing the low rate blended spun yarn, when blending the synthetic fibers of a main raw material with a blending raw material at a blend rate of ≤5 mass%, includes processing the blending raw material into slivers or rovings containing the blending raw material in an amount of ≥50 mass%, feeding and blending the slivers or rovings in a picking process, a combing process, a drawing process or a gilling process so to give a set low blend rate, and then passing the blended yarn through a spinning process. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for producing a low rate blended yarn in which the blend rate of a synthetic fiber-based blended material is 5% by mass or less.

  Conventionally, blended spun yarns of synthetic fibers such as acrylic fibers have been mixed with synthetic fibers and other synthetic fibers with different shrinkage properties and natural fibers such as wool at the raw cotton stage and sliver with a roller card. After that, it is created through the usual spinning process, or mixed with gil at the sliver stage, and then created through the usual spinning process. Generally, the blending rate of the blended material is the case of other synthetic fibers Is 30 to 40% by mass, and 10 to 60% by mass in the case of natural fibers.

  When mixing at the raw cotton stage, the raw cotton of each fiber is weighed and superposed on the hopper lattice, fed to the hopper mixer, mixed with cotton, and then sent to the next process. In the blended cotton at the stage, blended spots are generated depending on the form of raw cotton to be added, and the blended spots are inevitable.

  In recent years, the demand for blended yarns of synthetic fibers with high-performance fibers represented by electrostatic fibers and high-priced natural fibers represented by cashmere has increased, and high-performance fibers and natural fibers have a low blend rate. In the conventional blending method, it is difficult to obtain a uniform low-rate blended yarn because there are many mixed cotton spots. In addition, in order to stabilize the low-rate blending, a method has been proposed in which part of the main material and blended material are mixed and opened to create seed cotton and blended with seed cotton. There was a problem that it was difficult and easy to cause a blending error.

  For example, Patent Document 1 discloses a low blended yarn of acrylic fiber and conductive yarn. Although it is shown that the blending rate is about 10%, the manufacturing method is specifically shown. Not. Further, Patent Document 2 discloses spun yarn obtained by arranging slivers having different hues and shrinkage ratios in a drawing process and then passing through a normal spinning process, but the blending ratio is defined as a specific low rate range. It does not show what to do or the specific manufacturing method.

JP 2003-96619 A JP 2004-131902 A

  An object of the present invention is to obtain a low-rate blended yarn that is a homogeneous blend while having a low-rate blended yarn, and that the performance of the blended material is exhibited throughout the yarn, and is advantageous in terms of quality and price. It is in.

  The gist of the present invention is that a sliver or coarse sliver containing 50% by mass or more of a blended material is produced when a blended material is blended with a synthetic fiber as a main material at a blending rate of 5% by mass or less to produce a spun yarn with a low rate of blended material. Supply the sliver or roving to the main material and feed the sliver or roving so that the blending rate is low in the cotton-making process, carding process, drawing process or gil process, and then pass through the normal spinning process. A method for producing a low rate blended yarn comprising:

  More specifically, in the present invention, when a blended material is blended with a synthetic fiber as a main material at a blending rate of 5% or less and a spun yarn with a low rate of blending is produced by short cotton spinning, the blended material is used as a blended material. The roving yarn is contained in 50% by weight or more, and the roving yarn is used for the wrapping prevention wicking used at the time of lap winding in the blending cotton process. A method for producing a low-rate blended yarn, which involves winding in a main material wrap, making a sliver with a carding machine, and then passing through a normal spinning process,

  When the blended material is blended with the synthetic fiber of the main material at a blending rate of 5% or less, and the spun yarn of the low rate blended fabric is manufactured by the short cotton spinning, the main material is supplied to the flat card by the chute cotton method and the sliver is used. After making the blended material, the blended material is made into a roving yarn containing 50% by mass or more of the blended material, and the roving yarn is supplied with the number of roving yarns having a set low blending rate and mixed with the sliver of the main material with a drawing machine. , A method for producing a low rate blended yarn comprising passing through a normal spinning process,

  When the blended material is blended with the synthetic fiber of the main material at a blending rate of 5% or less and the spun yarn of the low rate blended fabric is manufactured by the worsted spinning, the blended material is a sliver containing 50% by mass or more of the blended material, Synthetic fiber of the main material is made into a sliver through a cotton opener, a blender, and a roller card. A method for producing a low rate blended yarn comprising passing through a process.

  According to the present invention, while blending the blended material at a low rate, the blended material is blended uniformly in the longitudinal direction of the yarn, and the performance of the blended material is exerted on the entire yarn without any unevenness, which is advantageous in terms of quality and price. Yarn can be obtained.

  The normal spinning process includes the process from raw cotton input (opening) to product packaging, and in cotton spinning, unfolding, opening, blended cotton, strips, milling, strips, spinning, winding yarn, Packing process, for short cotton spinning, open cotton, open cotton, blended cotton, carded cotton (flat card), strip roving, fine spinning, winding yarn, packaging process, for carded cotton spinning, open cotton, open cotton, mixed cotton, It consists of the steps of drawing, roller card, gil, roving, fine spinning, winding yarn, and packing.

  In the present invention, a sliver or roving yarn containing 50% by mass or more of a blended material is produced when a blended material is blended with a synthetic fiber as a main material at a blending rate of 5% by mass or less to produce a spun yarn having a low rate of blended material. And after supplying the sliver or roving yarn and mixing with the main material so as to have a low blending rate in the spinning process, spinning process, drawing process or gil process in spinning the main material, Through the subsequent spinning process. Therefore, when passing through the normal spinning process, when mixing in the cotton-spun process, when mixing in the cotton-spun process, when mixing in the cotton-spinning process, when mixing in the process after the cotton-spinning, and the drawing process Means that when mixed in the process after the drawing and the gil process, the process after the gil is passed through.

  In the present invention, in the method for producing a low blended yarn with a blending rate of 5% or less by short cotton spinning, the sliver or blended material composed of only the blended material is contained in advance by 50% by mass or more from the blended material. After creating a sliver or roving made of a mixture with the main material (hereinafter simply referred to as a sliver or roving of a blended material), the blending rate is adjusted by the amount of the blended material. Synthetic fibers of the main material are spun from the blended cotton process. In the process using a cotton-tapping machine, when the main material wrap is formed on the blended cotton machine, the mixed-spun raw yarn is used to prevent wrap ricking. Used as a winding shinosaki, the number of roving yarns is adjusted so as to achieve the desired low blending rate with respect to the basis weight of the main material wrap.

  In the present invention, the main material is blended and opened without using a blending cotton machine, and then supplied to a flat card by a chute cotton feeding method in which air is transported through a cotton feeder to create a sliver. In this case, the coarse yarn of the blended material is supplied from the feed roller of the flat card having a target low blending rate with respect to the basis weight of the main material supplied to the flat card (cotton machine), or In the first drawing process after cotton, sliver or roving yarn is supplied so as to achieve the desired low blending rate with respect to the total amount of sliver supplied.

  In a method for producing a low-blend yarn with a blending rate of 5% or less by ganshibo, the blended material is a sliver containing 50% by mass or more of the blended material, and the main material synthetic fiber is opened. The sliver is made into a sliver through a blending machine and a roller card, and the sliver of the blended material is supplied by the gil in the gil process, and the sliver is mixed with the sliver of the main material after supplying the sliver having a low blending ratio.

  As the main material, in addition to synthetic fibers such as acrylic fiber and polyester fiber, natural fibers of cotton and wool are used as a part of the main material. When using natural fibers such as cotton and linen as part of the main material, blending at the raw cotton stage is possible, but it is preferable to blend with the main material in the kneading process after the carding process, When using wool as a part of the main material, the wool is cut into a predetermined length to obtain raw cotton, which is blended with the main material.

  In the method of producing a low-rate blended yarn by eyelash spinning, the synthetic fiber of the main material is cut into a predetermined length from a continuous fiber tow in which the fibers produced during the production of the synthetic fiber are bundled, The raw cotton may be short fibers, or may be a sliver made of short fibers in which the fiber tow is checked using a stretch braking machine and the fibers are cut in a variable manner. When the synthetic fiber of the main material is raw cotton made of short fibers, the sliver is created with a roller card from the cotton opening process and the cotton blending process.

  When checking the fiber tow using a stretch braking machine and making it into a sliver, the sliver or coarse sliver of the blended material is used so that the desired low blending rate is achieved with respect to the main fabric sliver supply weight in the first gil process. Supply yarn. Even when wool is used as a part of the main material, it is preferably supplied in the gil process.

  In the case of short cotton spinning, the number of twists in the low-rate blended yarn is T = K√M (T: the number of twists per meter, M: meter count), the twist coefficient K is 80 to 105, and in the case of open-end spinning As for the number of twists in the low rate blended yarn, the twist coefficient K is preferably 105 to 120. In the case of short cotton spinning or open-end spinning, the synthetic fiber used for the main material has a single fiber fineness of 0.5 to 3.3 dtex and is cut at a constant length in a fiber length range of 38 to 51 mm. Preferably there is.

  In the case of eyelash spinning, the number of twists in the low rate blended yarn is preferably 60 to 85 in terms of the twist coefficient K. The synthetic fiber used for the main material is preferably a single fiber fineness of 0.5 to 5.6 dtex and a variable length cut to a fiber length of 76 to 127 mm. Also good.

  Examples of the blended material used in the present invention include conductive fibers formed by kneading a conductive material into an acrylonitrile polymer, but not only conductive fibers, but also other functional fibers may be used. ADVANTAGE OF THE INVENTION According to this invention, the blended yarn which exhibits those functions fully efficiently can be obtained, although it is a low blend rate.

  Hereinafter, the present invention will be specifically described by way of examples. In addition, in order to evaluate the blended state in the spun yarn, the number of fibers of the blended material at the cross section of the yarn at any ten positions in the longitudinal direction of the spun yarn was measured.

Example 1
As the main material, 97% by mass of raw cotton made of short fibers of acrylic fiber (fiber A1) with a single fiber fineness of 1.7 dtex and a fiber length of 51 mm, and as a blended material, formed by kneading a conductive material into an acrylonitrile-based polymer 3% by mass of raw cotton made of short fibers of conductive fibers (B) having a single fiber fineness of 3.3 dtex and a fiber length of 51 mm was used as a spinning raw material. Eight roasted yarns of 0.8 g / m were made in advance from raw cotton of conductive fibers made of a blended material, and used as entrainment shino. Form a 10 ounce / yard · m (310 g / m ² ) wrap of the main raw material acrylic fiber with a cotton blower. After creating a sliver while releasing the wrap and winding together with Shino, a spinning yarn having a spinning count of 1/52 Nm and a twist number of 690 t / m was produced through a normal spinning process. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

(Example 2)
The main material is 67% by mass of raw fiber made of short fibers of acrylic fiber (fiber A1) having a single fiber fineness of 1.0 dtex and a fiber length of 38 mm, and 30% by mass of combed cotton (fiber A3). A spinning raw material was 3% by mass of raw cotton made of short fibers of a conductive fiber (fiber B) having a single fiber fineness of 3.3 dtex and a fiber length of 38 mm formed by kneading a polymer with a conductive material. A roving of 0.45 g / m was prepared in advance from the raw cotton of the conductive fiber (fiber B) of the blended material. After blending and opening the two types of raw cotton, the acrylic fiber (fiber A1) is used as a sliver with a chute-feeding flat card (wooling machine) and 4.1 g with a drawing machine. / M sliver was made, and combed cotton (fiber A3) was made into a sliver with a chute cotton-feeding machine (flat card), and further a 4.1 g / m sliver was made with a drawing machine. Thereafter, five slivers of acrylic fiber (fiber A1), two slivers of combed cotton (fiber A3) and two of the previously prepared rovings were further blended with a No. 2 kneader and then No. 3 kneading Thereafter, through a normal spinning process, a spun yarn having a spinning count of 30 / 1S and a number of twists of 17.9 times / 吋 was prepared. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

(Example 3)
The main material is 37% by mass of raw cotton made of short fibers of a variable cut acrylic fiber (fiber A1) having a single fiber fineness of 2.2 dtex and a fiber length of 64 to 102 mm, a single fiber fineness of 2.2 dtex and a variable length of 64 to 102 mm. A single fiber formed by kneading 40% by mass of raw cotton made of short fibers of cut shrinkable acrylic fiber (fiber A2) and 40% by mass of wool (fiber A3), and kneading a conductive material into an acrylonitrile polymer as a blended material. 3% by mass of raw cotton made of short fibers of conductive fiber (fiber B) having a fiber fineness of 3.3 dtex and a fiber length of 76 mm was used as a spinning raw material. A sliver of 3.0 g / m was prepared in advance from the raw cotton of the conductive fiber (fiber B) of the blended material. The main material acrylic fiber (fiber A1) and the shrinkable acrylic fiber (fiber A2) are mixed at a ratio of 48:52 with a blender and made into a sliver through a cotton spreader and a roller card. A 6 g / m sliver was prepared. In the next gil, 8 slivers made from the raw cotton of the fiber A1 and the raw cotton of the fiber A2, and a sliver of 20 g / m wool (fiber A3) separately prepared (referred to as the top in the wool), and previously prepared Mix with one sliver from raw cotton of conductive fiber (Fiber B) and mix through gil, then through a normal spinning process to create a spun yarn with a spinning count of 1/42 Nm and a twist of 454 t / m did. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinning property, workability (knitting property), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

Example 4
Sliver (7g / m) consisting of short fibers of shrinkable acrylic fiber (fiber A1) obtained by checking acrylic fiber tow with a single fiber fineness of 2.2dtex and total fineness of 107ktex as a main material. ) A short of non-shrinkable acrylic fiber (fiber A2), which was 37% by mass, single fiber fineness 2.2 dtex, total fiber fineness 107 ktex acrylic fiber tow was checked with a stretch brewing machine and then made non-shrinkable by relaxation treatment The same single fiber fineness as used in Example 4 was used as a blended material of 40% by mass of sliver (7.58 g / m) made of fiber and 20% by mass of the top (20 g / m) of wool (fiber A3). 3% by mass of raw cotton made of short fibers of conductive fibers (fiber B) having a length of 3 dtex and a fiber length of 76 mm was used as a spinning raw material. A sliver of 3.0 g / m was prepared in advance from the raw cotton of the conductive fiber (fiber B) of the blended material. No. 2 gil at Ishibo, 3 main sliver acrylic fibers (fiber A1), 3 shrinkable acrylic fibers (fiber A2) sliver, 1 wool top, pre-made conductive fiber (fiber B) ) Was mixed with one sliver from the raw cotton, and the third and subsequent gilrs were passed through a normal spinning process to produce a spun yarn having a spinning count of 1/42 Nm and a twist number of 454 t / m. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

(Example 5)
As a main material, 67% by weight of raw cotton made of short fibers of a polyester fiber (fiber A1) having a single fiber fineness of 1.15 dtex and a fiber length of 38 mm and 30% by weight of combed cotton (fiber A3) are used as blended materials. As a spinning raw material, 3% by mass of raw cotton composed of short fibers of conductive fiber (fiber B) having the same single fiber fineness as used in 2 and a fiber length of 38 dmm was used. A roving of 0.45 g / m was prepared in advance from the raw cotton of the conductive fiber (fiber B) of the blended material. After blending and opening the two types of raw cotton of the main material, respectively, the sliver is a polyester fiber (fiber A1) sliver using a chute-feeding flat card (cotton machine), and 4.1 g / m with a drawing machine. A sliver was created. Further, a comb card cotton (fiber A3) was used as a sliver with a chute cotton type flat card (cotton machine), and a 4.1 g / m sliver was further prepared with a drawing machine. Thereafter, five polyester fibers (fiber A1) sliver, two combed cotton (fiber A3) slivers and two previously prepared rovings were further blended with a No. 2 kneader and then No. 3 kneading Thereafter, through a normal spinning process, a spun yarn having a spinning count of 30 / 1S and a number of twists of 17.9 times / 吋 was prepared. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

(Comparative Example 1)
The main material was formed by kneading a conductive material into an acrylonitrile-based polymer as 97% by mass of raw cotton made of short fibers of acrylic fiber (fiber A1) having a single fiber fineness of 1.7 dtex and a fiber length of 52 mm. 3% by weight of raw cotton made of short fibers of conductive fiber (fiber B) having a single fiber fineness of 3.3 dtex and a fiber length of 51 mm is used as a spinning raw material, measured, developed and laminated, and then mixed in a blended cotton machine. A wrap was formed through the card, and a spinning yarn having a spinning count of 1/52 Nm and a twist number of 690 t / m was prepared through a normal spinning process. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

(Comparative Example 2)
The main material is 37% by mass of a raw fiber made of short fibers of a variable cut acrylic fiber (fiber A1) having a single fiber fineness of 2.2 dtex and a fiber length of 64 to 102 mm, and a variable cut of a single fiber fineness of 2.2 dtex and a fiber length of 64 to 102 mm. Single fiber fineness formed by kneading 40% by mass of raw cotton made of short fibers of shrinkable acrylic fiber (fiber A2) and 20% by mass of wool (fiber A3), and kneading a conductive material into an acrylonitrile polymer as a blended material. A raw material of 3% by mass of raw cotton made of short fibers of 3.3 dtex and conductive fiber (fiber B) having a fiber length of 51 mm was used as a spinning raw material. Acrylic fiber (fiber A1) raw cotton and shrinkable acrylic fiber (fiber A2) raw cotton are weighed and developed in advance, and then passed through a roller card with a blender to form a sliver of 10 g / m with gil. In the next gil, 8 slivers and 1 wool sliver were mixed, and further passed through a gil, and then through a normal spinning process, a spun yarn having a spinning count of 1/42 Nm and a twist number of 454 t / m was prepared. Using the spun yarn obtained, a knitted fabric was knitted and subjected to a dyeing finishing process. Table 1 shows the spinnability, workability (knitting properties), blended state in the spun yarn, evaluation of product properties, and overall evaluation.

The method of the present invention facilitates the production of low-rate blended yarns, enables easy production of low-rate blended yarns with easy product changeover and little quality variation. Further, the blended material is uniformly dispersed in the longitudinal direction of the yarn and the cross section of the yarn, and there is no intermittent portion in the yarn of the blended material performance such as blended spots. Furthermore, the method of the present invention is useful for the development of composite functional materials, and is also effective in terms of economy.

Claims (4)

When producing a spun yarn with a blend rate of 5% or less by blending the main material synthetic fiber with a blend rate of 5% or less, the blended material is made into a sliver or roving yarn containing 50% or more of the blended material, and the cotton-spun process. A low rate blending process in which the sliver or roving yarn is supplied and mixed with the main material so that the set low blending rate is set in the sooting process, the drawing process or the gil process, and then passed through the normal spinning process. Yarn manufacturing method. When the blended material is blended with the synthetic fiber of the main material at a blending rate of 5% or less, and the spun yarn with a low blend rate is produced by short cotton spinning, the blended material is made into a roving yarn containing 50% by mass or more of the blended material, Using the roving yarn for the anti-ricking wrapping used at the time of winding the wrap in the cotton process, the roving number of the set low blending rate is wound into the wrapping of the main material formed by the hitting machine. A method for producing a low-rate blended yarn, which comprises passing a normal spinning process after forming a sliver. When the blended material is blended with the synthetic fiber of the main material at a blending rate of 5% or less and the spun yarn of the low rate blended fabric is manufactured with short cotton spinning, the main material is supplied to the flat card by the chute cotton method to create a sliver At the same time, the blended material is made into a roving yarn containing 50% by mass or more of the blended material, and the roving yarn is supplied with the number of roving yarns having a set low blending rate and mixed with the sliver of the main material with a drawing machine A method for producing a low rate blended yarn comprising passing through a normal spinning process. When the blended material is blended with the synthetic fiber of the main material at a blending rate of 5% or less and the spun yarn of the low rate blended fiber is produced by the worsted spinning, the blended material is made into a sliver containing 50% by mass or more of the blended material. The synthetic fiber of the material is made into a sliver through a cotton opening machine, a blending machine, and a roller card, and the sliver is mixed with the main material by supplying the sliver number of the blended material sliver at a set low blending rate and then the normal spinning process Manufacturing method of low-rate blended yarn consisting of threading * In Ishigebo, it seems that there is opening before blending.