Method for producing a yarn, a yarn and a fabric

Abstract

The application provides a preparation method of a ply yarn, the ply yarn and a fabric. The preparation method of the ply yarn comprises the following steps: preparing a first single yarn and a second single yarn, the tex of the first single yarn is greater than the tex of the second single yarn; twisting the first single yarn and the second single yarn in a first twist direction respectively, and the twist of the second single yarn is greater than the twist of the first single yarn; twisting the first single yarn and the second single yarn in a second twist direction, and the ply yarn is obtained by twisting the first single yarn and the second single yarn, the twist of the ply yarn is less than the twist of the first single yarn and the second single yarn, and the second twist direction is opposite to the first twist direction. The ply yarn prepared by the method can form a structure which is soft on the outside and has a certain support on the inside, and finally realizes the effect of being soft on the outside and rigid on the inside.

Description

Technical Field

[0001] This invention relates to the textile field, specifically to a method for preparing plied yarn, the plied yarn itself, and the fabric. Background Technology

[0002] With the development of society, people now have higher and higher requirements for the softness of knitted and woven fabrics. At the same time, the fabrics also need to have a certain degree of rigidity to achieve the effect of being soft but not collapsing and soft on the outside but firm on the inside. Therefore, the development of soft yarns is becoming increasingly popular.

[0003] Currently, there are two main types of super-soft yarns on the market. One type uses low-twist monofilament yarn and is processed using conventional twisting techniques to achieve a soft hand feel. The other type uses water-soluble viscose as a carrier to make untwisted yarn, which makes the fabric soft after de-fibering.

[0004] However, ply yarns processed from low-twist single yarns are prone to collapse, while untwisted yarns using water-soluble vinylon are expensive and have complex de-fiber processes. These are technical problems that urgently need to be solved in this field. Summary of the Invention

[0005] The main technical problem solved by this invention is to provide a simple preparation method for a soft yet firm ply yarn, as well as the ply yarn and fabric.

[0006] According to the first aspect, a method for preparing ply yarn is provided, comprising the following steps:

[0007] Prepare a first single yarn and a second single yarn, wherein the yarn count of the first single yarn is greater than that of the second single yarn;

[0008] The first single yarn and the second single yarn are twisted in the first twist direction respectively, and the twist of the second single yarn is greater than that of the first single yarn.

[0009] The first single yarn and the second single yarn are twisted in a second twist direction to form a ply yarn. The twist of the ply yarn is less than the twist of the first single yarn and the second single yarn, and the second twist direction is opposite to the first twist direction.

[0010] In one alternative embodiment, both the first single yarn and the second single yarn are cotton yarns.

[0011] In one optional embodiment, the raw material of the first single yarn and / or the second single yarn is long-staple cotton or short-staple cotton.

[0012] In one optional embodiment, the raw materials of the first single yarn and / or the second single yarn have cotton fiber lengths of 29.0 mm to 40.0 mm, strengths of 29.0 cN / tex or higher, micronaire values ​​of 4.3 to 4.8, and uniformity of 82.0% or higher.

[0013] In one alternative embodiment, the twist of the yarn is 300-500 twists / meter.

[0014] In one alternative embodiment, the twist of the first single yarn and / or the second single yarn is 300-1600 twists / meter.

[0015] In one alternative embodiment, the tex number of the first single yarn and / or the second single yarn is 5.83-36.4Tex.

[0016] In one optional embodiment, twisting the first single yarn and the second single yarn in a second twist direction includes the steps of:

[0017] The first single yarn and the second single yarn are combined on the same yarn bobbin with the same tension, and then twisted by a twisting machine in the second twist direction.

[0018] According to the second aspect, a ply yarn is provided, comprising:

[0019] The first single yarn has a first twist direction and a first twist degree;

[0020] The second single yarn has a yarn count less than that of the first single yarn, the twist direction of the second single yarn is the same as that of the first single yarn, and its twist degree is the second twist degree, which is greater than that of the first twist degree.

[0021] The first single yarn and the second single yarn are twisted together with a third twist in a second twist direction, the second twist direction being opposite to the first twist direction, and the third twist being less than the first twist.

[0022] According to the third aspect, a fabric obtained by spinning the aforementioned yarn is provided.

[0023] The beneficial effects of this application are as follows: by using two single yarns of different yarn counts, different twist directions, and different twist degrees, but the same first single yarn and second single yarn, when a small twist is applied to the two single yarns in the opposite direction, both the first single yarn and the second single yarn will untwist; because the twist degree of the second single yarn is large, the untwist coefficient is relatively small, resulting in a smaller elongation of the second single yarn, while the twist degree of the first single yarn is small, the untwist coefficient is relatively large, resulting in a larger elongation of the first single yarn and a fluffier texture; during twisting, the first single yarn will twist and wrap around the surface of the fine yarn, thereby enabling the yarn to form a structure that is soft on the outside and has a certain support inside, ultimately achieving the effect of being soft on the outside and firm on the inside. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of this application;

[0025] Figure 2 The hand feel test results of the fabric woven from the ply yarn provided as a comparative example in this application;

[0026] Figure 3 The hand feel test results of the fabric woven from the strands provided in Embodiment 1 of this application.

[0027] Figure label: First single yarn 1, Second single yarn 2. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0029] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] This application discloses a method for preparing ply yarn, which includes the following steps:

[0032] Step S1: Prepare the first single yarn 1 and the second single yarn 2, where the yarn count of the first single yarn 1 is greater than that of the second single yarn 2.

[0033] In this step, both the first single yarn 1 and the second single yarn 2 can be made of pure cotton yarn. For example, in a specific example, both the first single yarn 1 and the second single yarn 2 can be made of long-staple cotton or short-staple cotton with a cotton fiber length of 29.0mm-40.0mm, a strength of 29.0cN / tex or above, a micronaire value of 4.3-4.8, and a uniformity of 82.0% or above.

[0034] The first single yarn 1 and the second single yarn 2 mentioned above can be prepared by following the process flow of cleaning and combing (raw sliver), sliver winding, combing, first winding, second winding, third winding (finished sliver), roving, spinning and winding.

[0035] The purpose of the cleaning and carding process is to open and mix different types of cotton to facilitate subsequent processing and remove larger impurities and foreign fibers from the cotton. The sliver obtained after passing through the cleaning and carding system is called a raw sliver. The purpose of sliver lap is to stretch and mix multiple raw slivers, improve the parallelism and straightness of the cotton fibers, and then make the raw sliver into a combed lap to meet the feeding requirements of the combing machine. The purpose of combing is to remove short fibers that do not meet the spinning requirements, improve the parallelism and straightness of the fibers, further remove impurities from the fibers, and improve the uniformity of the combed sliver mixture. The purposes of the first lap, second lap, and third lap are... The purpose of spinning is to stretch the cotton sliver to a certain extent, improve the parallel straightness of the cotton fibers, improve the uniformity of the cotton sliver mixture, and remove residual impurities; the purpose of roving is to stretch the sliver parallel into roving of a certain thickness, apply a certain twist to the roving and wind it onto the roving tube for subsequent spinning; the purpose of spinning is to stretch the roving to a set fineness, twist it to make the fibers cohesive into fine yarn with a certain strength, and wind the fine yarn onto the spinning tube for subsequent processing; the purpose of winding is to make tubular fine yarn into cone yarn, inspect the yarn quality and remove yarn defects.

[0036] For example, the preparation of the first single yarn 1 and the second single yarn 2 can be carried out according to the following steps:

[0037] Cotton of different qualities is arranged according to the required blending ratio. The BO-A cotton grabber picks the cotton and feeds it into the cotton conveying pipe. The SP-MF multi-functional separator opens and removes impurities from the cotton. The cotton is then evenly mixed by an MX-16 blending machine. Impurities are further removed by a CL-C1 cotton cleaner and an SP-DX high-power dust removal device. Foreign fibers are then removed by a JWF0016C foreign fiber remover. The processed cotton is then fed into a TC5-1 carding machine through the cotton conveying pipe for carding into slivers. The slivers are pre-drawn by an FA313B drawing frame. After the sliver is formed, it is combed into a combed cotton lap by a CL15 sliver lap machine, and then combed into a sliver by a CJ60 combing machine. It is then drawn into a sliver by a TD03-600 drawing frame through first, second and third drawing processes. The sliver is then wound onto a roving tube by a JWF1415 roving frame at a certain draft to form roving. The roving is then wound onto a spinning tube by an F1520 spinning frame at the required roller draft ratio, spindle speed and direction to form spinning yarn of the corresponding count. The spinning yarn on the spinning tube is then wound onto a paper tube by a SAVIO-LOEPFE winding machine to obtain the finished package yarn of the required weight.

[0038] It should be understood that the above example only provides a specific example of obtaining the first single yarn 1 and the second single yarn 2 through spinning. It should be understood that the above steps are not a limitation on the spinning steps of the first single yarn 1 and the second single yarn 2. The first single yarn 1 and the second single yarn 2 can also be obtained by other spinning methods or purchased from commercially available finished cotton single yarns. As long as the yarn count of the first single yarn 1 is greater than the yarn count of the second single yarn 2, it is applicable to this application; for example, the yarn counts of both the first single yarn 1 and the second single yarn 2 are between 5.83 and 36.4 TeX.

[0039] Step S2: Twist the first single yarn 1 and the second single yarn 2 according to the first twist direction, and make the twist of the second single yarn 2 greater than the twist of the first single yarn 1.

[0040] In this step, the first single yarn 1 and the second single yarn 2 are twisted separately by a twisting machine. During twisting, the twisting direction of the first single yarn 1 and the second single yarn 2 must be the same. For ease of description, this application defines the twisting direction of the first single yarn 1 and the second single yarn 2 as the first twisting direction. For example, the first twisting direction can be an S twisting direction or a Z twisting direction. This application does not make any specific limitation.

[0041] For ease of description, this application defines the twist of the first single yarn 1 and the second single yarn 2 as the first twist and the second twist, both of which are between 300 and 1600 twists / meter. The second twist is greater than the first twist, that is, the first single yarn 1 with a larger yarn count has a smaller twist than the second single yarn 2 with a smaller yarn count.

[0042] Step S3: Twist the first single yarn 1 and the second single yarn 2 together, and add twist in the second twist direction to obtain a ply yarn. The twist of the ply yarn is less than the twist of the first single yarn 1 and the second single yarn 2, and the second twist direction is opposite to the first twist direction.

[0043] In a specific example, the above steps specifically include: combining two single yarns into a yarn bobbin under the same tension using a doubling machine, and then applying a specified twist to the yarn using a twisting machine in a twist direction opposite to that of the first single yarn 1 and the second single yarn 2; that is, twisting the first single yarn 1 and the second single yarn 2 with a third twist in a second twist direction, and the twist of the final ply yarn must be less than the twist of the first single yarn 1 and the second single yarn 2. This application defines the twist of the final ply yarn as the third twist, that is, the third twist is less than the first twist and the second twist; in a specific example, the twist of the ply yarn is 300-500 twists / meter.

[0044] Finally, a strand yarn is prepared by twisting the first single yarn 1 and the second single yarn 2 together.

[0045] This application employs two single yarns, 1 and 2, with different yarn counts, twist directions, and twist degrees but the same twist. When a small amount of twist is applied to the two single yarns in the opposite direction, both yarns untwist. Because the second single yarn has a higher twist degree, the untwist coefficient is relatively smaller, resulting in less elongation. Conversely, the first single yarn has a lower twist degree, resulting in a larger untwist coefficient and greater elongation, making it more fluffy. During twisting, the first single yarn twists and wraps around the surface of the fine yarn, thus enabling the yarn to form a structure that is soft on the outside and has a certain degree of internal support, ultimately achieving an effect of being soft on the outside and firm on the inside.

[0046] Furthermore, the aforementioned yarn can also be used as a raw material for fabrics. Fabrics woven from this yarn are soft and do not collapse.

[0047] To illustrate the effects of this application, the following specific embodiments and comparative examples are also provided:

[0048] Comparative example:

[0049] Purchase existing national standard superior grade products (compliant with GB / T 398-2018) on the market. Their specific specifications are as follows:

[0050] category Nominal linear density / tex Linear density deviation rate / % Linear density coefficient of variation / % Single yarn breaking strength / (Cn / tex) Single yarn breaking strength coefficient of variation / % Twist variation coefficient / % Comparative Example 11.1×2-20.0×2 ±2 1.5 17.8 7.0 5.0 Example

[0051] Prepare a first single yarn 1 with a tex of 14.6 Tex, and twist it in an S-direction at a twist rate of 850 twists / meter. Simultaneously prepare a second single yarn 2 with a tex of 29.15 Tex, and twist it in an S-direction at a twist rate of 500 twists / meter. Combine the first single yarn 1 and the second single yarn 2 at the same tension in a yarn bundle using a doubling machine, and then twist them in a Z-direction at a twist rate of 400 twists / meter using a twisting machine to obtain a ply yarn with the structure shown below. Figure 1 As shown in the table below, the test results for this yarn are as follows:

[0052] category Nominal linear density / tex Linear density deviation rate / % Linear density coefficient of variation / % Single yarn breaking strength (CN) Single yarn breaking strength / (Cn / tex) Single yarn breaking strength coefficient of variation / % Twist variation coefficient / % Example 1 15.0×2 1.4 1 580 19.2 3.8 4.5

[0053] It is evident that the yarn counts of the ply yarn prepared by the method of this application all exceed the requirements of the national standard for superior grade products, and it also has good single yarn breaking strength. Example

[0054] The hand feel of the fabrics woven using the above comparative examples and embodiments was tested. Specifically, the test was conducted using an SDL Atlas Fabric Hand Feel Tester (FTT) (according to the Chinese Ministry of Industry and Information Technology textile industry standard FZ / T 01166-2022 "Textile Fabric Hand Feel Testing and Evaluation Methods: Multi-Indicator Integrated Method"). The test results are as follows: Figure 2 and Figure 3 As shown.

[0055] Figure 2 The results of a hand feel test for fabric woven using national standard premium-grade yarn are shown. Figure 2 As can be seen, by comparing the fabrics woven from the yarn provided in section 1, only the warmth level reaches level four, while the smoothness and softness levels are both at level three.

[0056] Figure 3 The hand feel test results of the fabric woven using the yarn described in Embodiment 1 of this application are shown. Figure 3 It can be seen that the fabric woven from the yarn provided in Embodiment 1 of this application reaches level four in terms of smoothness, softness, warmth and overall hand feel, which is significantly better than the fabric woven from the national standard superior grade.

[0057] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A method for preparing ply yarn, characterized in that, Includes the following steps: Prepare a first single yarn and a second single yarn, wherein the yarn count of the first single yarn is greater than that of the second single yarn; both the first single yarn and the second single yarn are cotton yarns. The first single yarn and the second single yarn are twisted in the first twist direction respectively, and the twist of the second single yarn is greater than that of the first single yarn. The first single yarn and the second single yarn are combined on the same yarn bobbin with the same tension. The first single yarn and the second single yarn are twisted in the second twist direction. During twisting, the first single yarn twists and wraps around the second single yarn, so that the first single yarn and the second single yarn are twisted together to form a ply yarn. The twist of the ply yarn is less than the twist of the first single yarn and the second single yarn. The second twist direction is opposite to the first twist direction.

2. The method for preparing ply yarn as described in claim 1, characterized in that, The raw material of the first single yarn and / or the second single yarn is long-staple cotton or short-staple cotton.

3. The method for preparing ply yarn as described in claim 1, characterized in that, The raw materials of the first single yarn and / or the second single yarn have cotton fiber lengths of 29.0mm-40.0mm, strengths of 29.0cN / tex or higher, micronaire values ​​of 4.3-4.8, and uniformity of 82.0% or higher.

4. The method for preparing ply yarn as described in any one of claims 1 to 3, characterized in that, The twist of the yarn is 300-500 twists / meter.

5. The method for preparing ply yarn as described in any one of claims 1 to 3, characterized in that, The twist of the first single yarn and / or the second single yarn is 300-1600 twists / meter.

6. The method for preparing ply yarn as described in any one of claims 1 to 3, characterized in that, The tex of the first single yarn and / or the second single yarn is 5.83-36.4Tex.

7. The method for preparing ply yarn as described in any one of claims 1 to 3, characterized in that, Twisting the first single yarn and the second single yarn according to the second twist direction includes the following steps: The first single yarn and the second single yarn are combined on the same yarn bobbin with the same tension, and then twisted by a twisting machine in the second twist direction.

8. A ply yarn, prepared by the ply yarn preparation method according to any one of claims 1-7, characterized in that, include: The first single yarn has a first twist direction and a first twist degree; The second single yarn has a yarn count less than that of the first single yarn, the twist direction of the second single yarn is the same as that of the first single yarn, and its twist degree is the second twist degree, which is greater than that of the first twist degree. The first single yarn and the second single yarn are twisted together with a third twist in a second twist direction, the second twist direction being opposite to the first twist direction, and the third twist being less than the first twist.

9. A fabric obtained by spinning the ply yarn according to claim 8.

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