Composite yarn with irregular yarn patterns and preparation method thereof

Abstract

The present invention discloses a composite yarn with irregular yarn patterns and a preparation method thereof, belonging to the technical field of yarn preparation. The composite yarn with irregular yarn patterns comprises at least two polyester regenerated yarns and a cationic regenerated yarn threaded within the polyester regenerated yarns. The preparation method comprises: compounding the polyester regenerated yarn and the cationic regenerated yarn to obtain the composite yarn. The cationic yarn and the polyester regenerated yarn have different dyeing properties. The cationic yarn can be dyed into different colors, while the polyester can have patterns without being dyed. The cationic regenerated yarn can be coated inside the polyester regenerated yarn or exposed at any position outside the polyester regenerated yarn. The resulting composite yarn can have irregular patterns and colors that are randomly distributed around the circumference of the composite yarn and have adjustable lengths.

Description

Technical Field

[0001] The present invention belongs to the technical field of yarn preparation, and in particular relates to a composite yarn with irregular yarn patterns and a preparation method thereof. Background Art

[0002] Currently, the colors of yarns on the market are very single. The color of each yarn is the same color or a regular two-color or multi-color. It is impossible to achieve irregular changes in the color of the yarn, which makes the color presented by the yarn have certain limitations. For this reason, some technologies in this field have improved the existing composite yarns. For example, the Chinese invention patent with publication number CN115467065A discloses a composite two-color nylon yarn and a preparation method thereof. Conventional nylon and cationic nylon with different properties are selected as raw materials. By controlling the speed ratio of the first roller and the second roller, different stretching ratios of the two elastic yarn channels are formed. The steps of converting the raw material pre-oriented yarn into the finished elastic yarn and the two-strand composite are completed on the same texturing machine, thereby improving the two-color effect of the composite yarn. However, it has the problem of unclear texture and the high price of raw materials, which makes it difficult to meet people's demand for clothing diversity. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a composite yarn with clear textures and rich and irregular colors and a preparation method thereof.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] The composite yarn with irregular yarn patterns comprises a cationic regenerated yarn and at least two polyester regenerated yarns surrounding the cationic regenerated yarn.

[0006] The beneficial effects of the present invention are: the cationic yarn and the polyester regenerated yarn have different dyeing properties, the cationic yarn can be dyed into different colors, the polyester can have patterns without being dyed, the cationic regenerated yarn can be wrapped inside the polyester regenerated yarn or exposed at any position outside the polyester regenerated yarn, and the prepared composite yarn can have irregular patterns and colors that are randomly distributed on the circumference of the composite yarn and have adjustable lengths, thereby meeting people's demand for clothing diversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The composite yarn with irregular yarn patterns in Example 1 of the present invention;

[0008] Figure 2 A side view of the structure of a composite yarn having irregular yarn patterns according to the present invention;

[0009] Figure 3 Schematic diagram of the structure of the composite yarn with irregular yarn patterns of the present invention;

[0010] Description of labels:

[0011] 1. Polyester recycled yarn; 2. Cationic recycled yarn. DETAILED DESCRIPTION

[0012] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0013] Please refer to Figure 1 , a composite yarn with irregular yarn patterns, comprising a cationic regenerated yarn and at least two polyester regenerated yarns surrounding the cationic regenerated yarn.

[0014] The method for preparing the composite yarn with irregular yarn patterns comprises the following steps: compounding polyester regenerated yarn and cationic regenerated yarn to obtain the composite yarn.

[0015] Furthermore, the compounding specifically includes sequentially performing yarn feeding, pulling and stretching, and winding.

[0016] Furthermore, the nozzle model used for traction stretching is DH412 (2.5), and the air pressure is 4 kg.

[0017] From the above description, it can be seen that the beneficial effect of the present invention is that the polyester regenerated yarn and the cationic yarn are blown away in an inconsistent state when passing through the nozzle, so that the position of the formed cationic yarn is random. The use of a specific nozzle model and air pressure control makes the length of the cationic yarn exposed outside the composite yarn random. The use of a nozzle with model DH412 (2.5) can spray the yarn firmly. If this model is not selected, the texture will become shorter. At the same time, the pressure is 4kg. When the pressure exceeds this, the texture becomes shorter, and when it is lower than this pressure, the texture becomes longer, and the same effect cannot be achieved.

[0018] Furthermore, the number of polyester regenerated yarns is 3 to 7, and the number of cationic regenerated yarns is 1 to 2.

[0019] From the above description, it can be seen that the dyeing properties of cationic yarn and polyester regenerated yarn are different. Cationic yarn can be dyed into different colors, and polyester can have texture without being dyed. Cationic regenerated yarn can be wrapped inside the polyester regenerated yarn or exposed at any position outside the polyester regenerated yarn. The resulting composite yarn can have irregular texture colors that are randomly distributed on the circumference of the composite yarn and have adjustable length.

[0020] Furthermore, the sum of the fineness of the polyester regenerated yarn and the cationic regenerated yarn is less than or equal to 1200D.

[0021] From the above description, it can be seen that by limiting the total fineness of polyester regenerated yarn and cationic regenerated yarn, the texture of the composite yarn can be effectively controlled. When the total fineness exceeds 1200D, the texture of the yarn is difficult to control.

[0022] Furthermore, the twist direction of the polyester regenerated yarn is Z-direction, and the network fastness is no network.

[0023] Furthermore, the twist direction of the cationic regenerated yarn is Z-direction, and the network fastness is micro-network.

[0024] Furthermore, the network strength is a micro-mesh of cationic regenerated yarn with 20 nodes per meter.

[0025] From the above description, it can be seen that by limiting the twist direction and network strength of polyester regenerated yarn and cationic regenerated yarn, the final product has clear and irregular texture. If the twist direction or network strength is not adopted, the texture of the final product will be poor. The network strength of cationic regenerated yarn is micro-grid, which makes the final texture have an irregular deep and long effect, which is more beautiful. If the network of cationic regenerated yarn is strengthened, the texture will increase. If the network strength is no network, no texture will appear. If the micro-grid is used, nodes will appear in the cationic yarn, and different states will be produced when entering the nozzle in the subsequent compounding step, thereby forming irregular changes in the texture.

[0026] Furthermore, the overfeed rate (i.e., the speed difference between the wire feeding roller and the wire outlet roller) is 2 to 2.5%, the traction stretching speed is 300 to 400 m / min, the traction multiple is -2.0 to -2.4%, and the speed difference between the winding black roller and the wire outlet black roller is -1.0 to -2.0%.

[0027] From the above description, it can be seen that by setting a specific traction multiple, the tension of the yarn before entering the nozzle is controlled, so that the yarn position remains stable. By setting a specific black roller winding value range, the winding tension of the finished product is controlled, so that the composite yarn has clear texture and presents an irregular texture effect. If this range is exceeded, the same effect cannot be achieved.

[0028] Please refer to Figure 1 , embodiment 1 of the present invention is:

[0029] A composite yarn with an irregular yarn pattern, comprising one 150D / 48F cationic regenerated yarn 2 and five 150D / 72F polyester regenerated yarns 1 wrapped around cationic regenerated yarn 2. The sum of the fineness of polyester regenerated yarn 1 and cationic regenerated yarn 2 is less than 1200D. The twist direction of polyester regenerated yarn 1 is Z-direction, with a network strength of no network. The twist direction of cationic regenerated yarn 2 is Z-direction, with a network strength of micro network.

[0030] The composite yarn prepared in Example 1 is as follows Figure 1 As shown, the lines are clear and the grain is irregular and beautiful.

[0031] The second embodiment of the present invention is:

[0032] A composite yarn with an irregular yarn pattern, comprising one 150D / 48F cationic regenerated yarn 2 and three 150D / 72F polyester regenerated yarns 1 wrapped around cationic regenerated yarn 2. The sum of the fineness of polyester regenerated yarn 1 and cationic regenerated yarn 2 is less than 1200D. The twist direction of polyester regenerated yarn 1 is Z-direction, and the interwoven fastness is "no web." The twist direction of cationic regenerated yarn 2 is Z-direction, and the interwoven fastness is "micro web."

[0033] The third embodiment of the present invention is:

[0034] A composite yarn with an irregular yarn pattern, comprising two 150D / 48F cationic regenerated yarns 2 and seven 150D / 72F polyester regenerated yarns 1 wrapped around cationic regenerated yarn 2. The combined fineness of polyester regenerated yarn 1 and cationic regenerated yarn 2 is less than 1200D. The twist direction of polyester regenerated yarn 1 is Z-direction, with a network strength of no network. The twist direction of cationic regenerated yarn 2 is Z-direction, with a network strength of micro network.

[0035] Please refer to Figure 1 , the fourth embodiment of the present invention is:

[0036] The preparation method of the composite yarn with irregular yarn patterns in Example 1 comprises the following steps: five polyester regenerated yarns 1 and one cationic regenerated yarn 2 are compounded to obtain a composite yarn, wherein the polyester regenerated yarn 1 and the cationic regenerated yarn 2 are compounded using an air covering machine, the nozzle is DH412 (2.5), the air pressure is 4 kg, the speed is 350 m / min, the traction multiple is -2.3, the overfeed rate is 2.3%, and the speed difference between the winding black roller and the silk-discharging black roller is -1.5%.

[0037] Comparative Examples 1 to 5 were carried out under the same conditions as in Example 1, and the results are shown in Table 1 below:

[0038] Table 1

[0039]

[0040]

[0041] In summary, the present invention provides a composite yarn with irregular yarn patterns and a preparation method thereof. The cationic yarn and the polyester regenerated yarn have different dyeing properties. The cationic yarn can be dyed into different colors, and the polyester can have patterns without being colored. The cationic regenerated yarn can be wrapped inside the polyester regenerated yarn or exposed at any position outside the polyester regenerated yarn. The polyester regenerated yarn and the cationic yarn are blown away in inconsistent states when passing through the nozzle, resulting in a random position of the formed cationic yarn. Combined with the use of a specific nozzle model and air pressure control, the length of the cationic yarn exposed outside the composite yarn is also random. The resulting composite yarn can have irregular patterns and colors that are randomly distributed and have adjustable lengths on the circumference of the composite yarn.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing a composite yarn having irregular yarn patterns, characterized in that: The method comprises the following steps: feeding, drawing, stretching and winding polyester regenerated yarn and cationic regenerated yarn in sequence to obtain composite yarn; the overfeed rate of the feeding yarn is 2-2.5%, the drawing and stretching speed is 300-400 m / min, the drawing multiple is -2.0-2.4%, and the speed difference between the winding black roller and the yarn outlet black roller is -1.0-2.0%; The composite yarn comprises a cationic regenerated yarn and at least two polyester regenerated yarns wrapped around the cationic regenerated yarn; the twist direction of the polyester regenerated yarn is Z-direction, and the network fastness is no-net; the twist direction of the cationic regenerated yarn is Z-direction, and the network fastness is micro-net; the total fineness of the polyester regenerated yarn and the cationic regenerated yarn is less than or equal to 1200D; The polyester regenerated yarn and the cationic regenerated yarn are blown away in different states when passing through the nozzle, so that the positions of the formed cationic regenerated yarns are random, and the lengths of the cationic regenerated yarns exposed outside the composite yarns are also random.

2. The method for preparing a composite yarn with irregular yarn patterns according to claim 1, characterized in that: The number of the polyester regenerated yarns is 3 to 7, and the number of the cationic regenerated yarns is 1 to 2.

3. The method for preparing a composite yarn with irregular yarn patterns according to claim 1, characterized in that: The polyester regenerated yarn is evenly distributed.

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