Production method of super-soft and comfortable different-count zero-twist double-strand yarn

Abstract

The invention discloses a production method of super-soft and comfortable different-count zero-twist double-strand yarn, and relates to the technical field of spinning. The core of the invention is as follows: two yarns with different counts and different thicknesses are respectively made into yarns in a Z twist direction, then the two yarns with different counts are parallelly combined on a spool, and finally, one thicker single yarn in the two yarns with different counts is wrapped outside the other thinner single yarn in the Z twist direction in an S twist direction. The twisting directions of the inner layer and the outer layer are opposite. Due to the fact that the twist degree of the Z twist direction of the fine-count single yarn of the inner layer is high, the twist degree is reserved after reverse twist breaking of the S twist, the plying twist degree is optimized in order to achieve the optimal balance point design, it is guaranteed that the yarn has enough strength to support the follow-up weaving process, and the softness and comfort of the fabric cannot be affected by the too high twist degree. And meanwhile, different twisting directions of the inner layer and the outer layer are also beneficial to counteracting part of torque generated by the twisting degree, so that the fabric is smoother and more stable.

Description

Technical Field

[0001] The invention relates to the field of textile industry, in particular to the field of spinning technology, and specifically refers to a production method of an ultra-soft and comfortable zero-twist double-strand yarn. Background Art

[0002] In the textile industry, the pursuit of soft, comfortable and high-quality products has always been the focus of manufacturers and consumers. For products that come into direct contact with the skin, such as shirts, underwear, towels and quilts, and even denim clothing, softness is one of the important factors that determine product quality and user skin-friendly experience. In order to achieve this goal, textile engineering technicians are constantly exploring new technologies and materials to achieve the best fabric performance.

[0003] Traditionally, the twist of yarns - the degree of twisting applied to the fibers when they are spun into yarns - has a significant impact on the final properties of the fabric. Typically, a smaller twist gives the fabric a softer feel; however, too low a twist reduces the strength of the yarn, leading to difficulties in the spinning process and increased breakage during weaving. Therefore, in past practice, in order to balance softness and processing feasibility, the choice of yarn twist often needs to compromise at an intermediate value, which limits the maximum softness that the fabric can achieve. The development of modern textile technology has prompted researchers to find new ways to improve the softness, fluffiness and overall comfort of fabrics. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a method for producing ultra-soft and comfortable heterogeneous zero-twist double-ply yarn. The heterogeneous zero-twist double-ply yarn provided by the present invention can maintain or even exceed the softness of existing low-twist yarn and untwisted yarn, while ensuring that the strength of the yarn can meet the weaving requirements of the subsequent processes, avoiding unnecessary breakage, and reducing the problem of hair loss, thereby further improving the quality characteristics of the fabric such as softness and comfort.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a method for producing a zero-twist double-stranded yarn, comprising the following steps:

[0007] The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn are parallelly combined into a yarn tube, and a zero-twisted double-ply yarn with different counts is prepared with an S-twisted twist on a two-for-one twisting machine;

[0008] In the above production method, the twist of the fine-count Z-twisted single yarn is significantly greater than the twist of the coarse-count Z-twisted single yarn; the twist of the coarse-count Z-twisted single yarn is equal to the twist of the different-count zero-twist double-ply yarn prepared with S-twisted twist.

[0009] In the above production method, the term twist direction refers to the inclination direction of the spiral line formed by the units constituting the yarn rotating around the axis of the yarn when the yarn is in a vertical position.

[0010] The term S twist means that the inclination direction of the fibers in the yarn is consistent with the middle of the letter S, which is a right-handed or clockwise twisted yarn; the term Z twist means that the inclination direction of the fibers in the yarn is consistent with the middle of the letter Z, which is a left-handed or counterclockwise twisted yarn; in the field of yarn, twist means that the yarn rotates 360 degrees around its axis, which is one twist.

[0011] The term twist refers to the number of twists of the yarn within a specified length before untwisting, and the unit of the Tex system is 10cm.

[0012] The heterogeneous zero-twist double-stranded yarn prepared by the above production method has an overall structure of a coarse-count Z-twist single yarn wrapped around a fine-count Z-twist single yarn, that is, the coarse-count Z-twist single yarn among the two heterogeneous yarns is wrapped around the outside of the fine-count Z-twist single yarn in an S-twist manner, forming a composite structure double-stranded yarn with opposite twist directions of the inner and outer layers.

[0013] From the analysis of twist shrinkage, the twist shrinkage of coarse yarn is greater than that of fine yarn. When the same twist is added on the two-for-one twisting machine, the coarse yarn turns more. After the S-twist twist is broken, the elongation of the coarse single yarn is greater than that of the fine single yarn. The zero-twist double-stranded yarn made by the two-for-one twisting machine has an overall structure of coarse yarn wrapped around fine yarn. The coarse single yarn on the outer layer of the strand achieves zero twist, and the surface of the yarn is fluffy and soft, making the final product softer and skin-friendly.

[0014] Since the twist of the fine Z-twisted single yarn in the inner layer is high, the twist is retained after the S-twisted reverse twist, while the twist of the coarse Z-twisted single yarn is zero twist. This design can ensure that the yarn has sufficient strength to support the subsequent weaving process, and will not affect the softness and comfort of the fabric due to excessive twist. At the same time, the difference in twist direction of the inner and outer layers also helps to offset part of the torque generated by the twist, making the fabric smoother and more stable.

[0015] In the above production method, the yarn count range of the coarse Z-twisted single yarn is 7s-60s; the yarn count range of the fine Z-twisted single yarn is 20s-120s; the yarn count range of the S-twisted heterogeneous zero-twist double yarn is 5s-40s.

[0016] The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn may be made of the same material or different materials.

[0017] The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn are made of natural fiber, regenerated cellulose fiber, pure synthetic fiber or blended synthetic fiber.

[0018] The fibers include: cotton, wool, silk, linen, lyocell fiber, modal fiber and viscose fiber; the synthetic fibers include: polyester and acrylic fiber.

[0019] Since one of the single yarns of the zero-twist double-ply yarn (coarse-count Z-twist single yarn) achieves the zero-twist effect, in order to avoid a certain degree of hair loss during use, the material selection can be optimized. Preferably, the cotton fiber can be long-staple cotton or combed cotton, and the polyester can be ultra-fine denier polyester. The optimization of material selection helps to produce more delicate and comfortable fabrics.

[0020] According to a second aspect of the present invention, there is provided a double-stranded wire with different branches and zero twist, wherein the double-stranded wire with different branches and zero twist is prepared by the above-mentioned production method.

[0021] The third aspect of the present invention provides the use of the above-mentioned hetero-count zero-twist two-ply yarn in the preparation of soft, fluffy and comfortable textiles.

[0022] The textile products include: high-quality shirts, underwear, towels, quilts and jeans.

[0023] Beneficial effects of the present invention:

[0024] The invention proposes a production method of a super-soft and comfortable heterogeneous zero-twist double-stranded yarn by innovatively integrating the selection of fiber materials and structural design. In the field of yarn, a single yarn is a yarn, and two or more yarns are combined into a line. The present invention combines two single yarns of different coarseness and Z-twist in parallel through a doubling machine to form a doubling line, and the doubling line is subjected to an S-twist in the opposite direction to obtain a different-count zero-twist double-ply yarn, which is an overall structure of coarse-count yarn wrapped around fine-count yarn. Moreover, since the twist of the S-twist is equal to the twist of the coarse-count single yarn in the above-mentioned doubling line, the twist of the coarse-count single yarn is zero-twist after breaking the twist, and the Z-twist twist of the fine-count single yarn is reduced after breaking the twist. This design balances the softness and processing feasibility of the different-count zero-twist double-ply yarn, so that the spinning process can be smooth and no breakage is increased during the weaving process. The textiles prepared from the different-count zero-twist double-ply yarn have higher softness, stronger stability and more lasting comfort experience, which meets the market's continuous demand for high-quality shirts, underwear, towels, quilts, jeans and other products, brings more convenience and good enjoyment to people's lives, and promotes the entire textile industry to a higher level. Development. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a process flow chart for preparing heterogeneous zero-twist double-stranded yarn. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0027] As mentioned above, the softness of textiles is one of the important factors that determine product quality and user skin-friendly experience. However, too small a twist of ordinary yarn will cause difficulties in spinning and increase the number of broken ends in weaving. Therefore, in the past, the only way to achieve "softness" was to balance spinning and weaving. The requirement for yarn twist was to select a compromise value, which limited the maximum softness that the fabric could achieve.

[0028] Based on this, the present invention provides a method for producing super soft and comfortable zero-twist double-stranded yarn. The advent of the zero-twist double-stranded yarn provides the textile industry with another new solution to achieve "softness". After technical treatment, one of the thick single yarns in the double-stranded yarn has almost no fiber twist. This yarn can significantly enhance the softness of the fabric, and due to its unique structure, it can also improve the water absorption performance of the fabric; at the same time, the other fine single yarn in the above-mentioned yarn, due to retaining the appropriate twist, plays a role of strengthening the body in the entire yarn structure, so that the spinning process can be smooth and no broken ends are increased during the weaving process. The fabric made of the above-mentioned zero-twist double-stranded yarn not only feels super soft and thick, but also has better skin-friendliness and breathability, making users feel extra comfortable when using it.

[0029] The coarse-count Z-twisted yarn and the fine-count Z-twisted yarn in the double-ply yarn used in the present invention are respectively subjected to raw material selection, cotton cleaning process, combing process (if it is combed cotton, a combing process is required), drawing process, roving process, spun yarn process, winding process, and then the two yarns are paralleled and combined into a double line by a doubling machine, and then the two yarns are combined into S-twisted zero-twisted double-ply yarn by a doubling machine. The preparation process flow chart is shown as follows: Figure 1 shown.

[0030] The following detailed description is for illustrative purposes only and is intended to provide further explanation of the present application, rather than to limit the scope of the present invention.

[0031] Example 1: Preparation of zero-twist double-stranded yarn

[0032] The designed Z-twist coarse yarn is a 10-ne combed cotton single yarn with a twist of 42 twists / 10cm; the designed Z-twist fine yarn is a 40-ne combed cotton single yarn with a twist of 105 twists / 10cm; the double-ply yarn after the two yarns of different thicknesses are plied together is 8-ne, and the twist of the plied yarn on the twisting machine is designed to be S-twist 42 twists / 10cm. After two single yarns of different thicknesses are plied together to form a double-ply yarn, the twist of the 10-ne combed cotton single yarn is almost zero due to the reverse twisting, which plays a role of skin-friendly and softness, while the twist of the 40-ne combed cotton single yarn is reduced to 63 twists / 10cm, making it a strong body of the double-ply yarn to meet the strength requirements of weaving and fabrics in the subsequent processes.

[0033] Example 2: Preparation of zero-twist double-stranded yarn

[0034] The designed Z-twist coarse yarn is a 14-ne long-staple cotton single yarn with a twist of 49.5 twists / 10cm; the designed Z-twist fine yarn is a 60-ne lyocell single yarn with a twist of 127.5 twists / 10cm; the double-stranded yarn after the two yarns of different thicknesses are plied together is 11.5-ne, and the designed twist of the double twisting machine is S twist 49.5 twists / 10cm. After the two single yarns of different thicknesses are plied together to form a double-stranded yarn, the twist of the 14-ne long-staple cotton single yarn is almost zero due to the reverse twisting, which plays a role of skin-friendly and softness, while the twist of the 60-ne lyocell cotton single yarn is reduced to 78 twists / 10cm, making it a strong body of the double-stranded yarn, which can meet the strength requirements of weaving and fabrics in the subsequent processes.

[0035] Example 3: Preparation of zero-twist double-stranded yarn

[0036] The designed Z-twist coarse yarn is 20 Ne modal single yarn with a twist of 59 twists / 10cm; the designed Z-twist fine yarn is 80 Ne acrylic single yarn with a twist of 147 twists / 10cm; the double yarn after the two yarns of different thicknesses are plied is 16 Ne, and the designed twist of the double twisting machine is S twist 59 twists / 10cm. After the two single yarns of different thicknesses are plied to form a double yarn, the twist of the 20 Ne modal single yarn is almost zero due to the reverse twisting, which plays a role of skin-friendly and soft, while the twist of the 80 Ne acrylic single yarn is reduced to 88 twists / 10cm, making it a strong body of the double yarn, which can meet the strength requirements of weaving and fabrics in the subsequent processes.

[0037] Example 4: Performance test of zero-twist double-stranded wire

[0038] The different-count zero-twist two-ply yarns produced in Examples 1-3 and the commercially available zero-twist two-ply yarns were tested for relevant properties according to conventional methods or national standards in the textile field, wherein the bending stiffness was tested using GB / T 18318-2001 Determination of the bending length of textiles (method), and the smaller the bending stiffness, the softer the yarn; the strength was tested using GB / T3916-2013 Determination of the breaking strength and breaking elongation of textile package yarns (method); and the water absorption was tested using GB / T 21655.1-2023 (method). The test results are shown in Table 1.

[0039] Table 1: Performance Test

[0040]

[0041] It can be seen from the test results that the different-count zero-twist double-ply yarn prepared by the production method provided by the present invention is softer and skin-friendly, and the yarn strength can meet the weaving requirements, and it also performs well in terms of water absorption. Textiles woven with the different-count zero-twist double-ply yarn are expected to achieve higher softness, stronger stability and more lasting comfortable experience.

[0042] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for producing a zero-twist double-stranded wire with different numbers, characterized in that: The steps include: The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn are parallelly combined and then twisted in an S-twisted direction to prepare a zero-twisted double-ply yarn with different counts; The twist of the fine-count Z-twisted single yarn is greater than the twist of the coarse-count Z-twisted single yarn; The twist of the coarse-count Z-twisted single yarn is equal to the twist of the S-twisted heterogeneous-count zero-twisted double-ply yarn.

2. The production method according to claim 1, characterized in that The heterogeneous zero-twist double-strand yarn is an overall structure in which a coarse Z-twist single yarn is wound around a fine Z-twist single yarn.

3. The production method according to claim 1, characterized in that The yarn count range of the coarse-count Z-twisted single yarn is 7s-60s; the yarn count range of the fine-count Z-twisted single yarn is 20s-120s; and the yarn count range of the S-twisted heterogeneous-count zero-twisted double-ply yarn is 5s-40s.

4. The production method according to claim 1, characterized in that The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn are made of the same material or different materials.

5. The production method according to claim 1 or 4, characterized in that: The coarse-count Z-twisted single yarn and the fine-count Z-twisted single yarn are made of natural fiber, regenerated cellulose fiber, pure synthetic fiber or blended synthetic fiber.

6. The production method according to claim 5, characterized in that The fibers include: cotton, wool, silk, linen, lyocell fiber, modal fiber and viscose fiber; the synthetic fibers include: polyester and acrylic fiber.

7. A zero-twist double-stranded wire with different branches, characterized in that: The hetero-branch zero-twist double-stranded yarn is prepared by the production method described in any one of claims 1-6.

8. Use of the heterogeneous zero-twist double-strand yarn according to claim 7 in the preparation of soft, fluffy and comfortable textiles.

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