Cashmere core-spun yarn preparation process

Abstract

The invention provides a cashmere core-spun yarn preparation process, and relates to the technical field of core-spun yarn manufacturing, and the cashmere core-spun yarn preparation process comprises the following steps: cashmere roving preparation: obtaining a cashmere raw material, carrying out carding treatment on the cashmere raw material to obtain cashmere fibers, preparing the cashmere fibers into cashmere roving through a roving process, and carrying out antistatic treatment on the cashmere roving for later use; preparing a core yarn; and core-spun treatment: taking the cashmere roving as an outer wrapping fiber, and wrapping the outer part of the core yarn in a core-spun yarn mode in a spinning process to prepare the cashmere core-spun yarn. According to the invention, antistatic treatment is carried out on the cashmere roving, so that the overall antistatic performance of the cashmere core-spun yarn is improved, the preparation time can be shortened, and the preparation efficiency of the cashmere core-spun yarn is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of core-spun yarn manufacturing, and particularly to a preparation process for cashmere core-spun yarn. Background Art

[0002] Core-spun yarn, also known as composite yarn or covered yarn, is a new type of yarn composed of two or more kinds of fibers. Core-spun yarn generally uses synthetic fiber filaments with good strength and elasticity as the core filaments, and is spun by twisting together short fibers such as cotton, wool, and viscose fibers on the outside. Core-spun yarn combines the excellent properties of the long filament core and the outer short fibers.

[0003] Chinese Patent with the authorization announcement number CN110144651B discloses a high imitation cashmere core-spun yarn and its preparation process. The core-spun yarn uses polyester filament as the core filament and high imitation cashmere blended fiber as the outer wrapping yarn of the core-spun yarn. The high imitation cashmere blended fiber is a mixed fiber of hollow viscose fiber, polyamide fiber, and graphene composite polyamide fiber. The raw material ratio of the polyester filament and the high imitation cashmere blended fiber is as follows according to the weight percentage: 29-33% of polyester filament, 60-64% of hollow viscose fiber and polyamide fiber, and 5-9% of graphene composite polyamide fiber. The yarn count of the core-spun yarn is 19-57 tex; among them, the weight ratio of the hollow viscose fiber to the polyamide fiber is 22-23:8-9. The advantages of the present invention are that the high imitation cashmere core-spun yarn of the present invention has better softness, excellent moisture absorption and sweat discharge, is comfortable and durable, has good warmth retention, has a good appearance, and has lasting elasticity and shape retention.

[0004] When preparing the above core-spun yarn, it is necessary to spray and soak it with an antistatic agent solution for 23-25 hours to fully and evenly absorb moisture and then reserve it. The waiting time is too long, and the preparation efficiency of the core-spun yarn is relatively low. Summary of the Invention

[0005] The present invention provides a preparation process for cashmere core-spun yarn to solve the technical problem that the waiting time is too long and the preparation efficiency of the core-spun yarn is relatively low when preparing the core-spun yarn at present.

[0006] To solve the above technical problem, the present invention discloses a preparation process for cashmere core-spun yarn, including the following steps:

[0007] Preparation of cashmere roving: Obtain cashmere raw materials, perform carding treatment on the cashmere raw materials to obtain cashmere fibers, make the cashmere fibers into cashmere roving through the roving process, and perform antistatic treatment on the cashmere roving and then reserve it;

[0008] Preparation of core yarn;

[0009] Core-spun treatment: Take the cashmere roving as the outer wrapping fiber and wrap it around the core yarn in the core-spun yarn mode in the spinning process to obtain the cashmere core-spun yarn.

[0010] Preferably, the antistatic treatment includes:

[0011] Spraying the antistatic mixture on the cashmere roving for the first time and performing the first drying;

[0012] Spraying the antistatic mixture on the cashmere roving for the second time and performing the second drying;

[0013] Spraying the antistatic mixture on the cashmere roving for the third time and performing the third drying.

[0014] Preferably, the antistatic mixture includes wool lubricant and antistatic agent, and the antistatic mixture is prepared by mixing the wool lubricant and the antistatic agent through a mixing device.

[0015] Preferably, the first spraying duration is 15 min to 25 min, the first drying duration is 10 min to 15 min, and the first drying temperature is 40°C to 50°C.

[0016] Preferably, the second spraying duration is 20 min to 30 min, the second drying duration is 20 min to 25 min, and the second drying temperature is 55°C to 65°C.

[0017] Preferably, the third spraying duration is 10 min to 20 min, the third drying duration is 15 min to 20 min, and the third drying temperature is 50°C to 60°C.

[0018] Preferably, the core yarn preparation includes obtaining core yarn fibers and providing a conductive layer outside the core yarn fibers.

[0019] Preferably, the conductive layer is made of a composite weave of carbon fiber and metal fiber materials.

[0020] Preferably, the conductive layer is made by spraying a conductive coating.

[0021] Preferably, the thickness of the conductive layer is 3 to 11 μm.

[0022] The technical solution of the present invention has the following advantages: The present invention provides a preparation process for cashmere core-spun yarn, which relates to the technical field of core-spun yarn manufacturing, and includes the following steps: Cashmere roving preparation: Obtaining cashmere raw materials, carding the cashmere raw materials to obtain cashmere fibers, making the cashmere fibers into cashmere rovings through the roving process, and performing antistatic treatment on the cashmere rovings for later use; Core yarn preparation; Core-spun treatment: Using the cashmere roving as the outer fiber and winding it around the core yarn in the core-spun yarn manner in the spinning process to obtain the cashmere core-spun yarn. In the present invention, through the antistatic treatment of the cashmere roving, the overall antistatic performance of the cashmere core-spun yarn is improved, and the preparation duration can be shortened, thereby improving the preparation efficiency of the cashmere core-spun yarn.

[0023] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the means particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0024] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0025] The drawings are used to provide a further understanding of the present invention, and constitute a part of the description. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0026] Figure 1 is a process flow diagram for preparing a cashmere core-spun yarn according to the present invention;

[0027] Figure 2 is an internal layout diagram of the treatment tank according to the present invention;

[0028] Figure 3 is a schematic diagram of the overall structure of the mixing device according to the present invention;

[0029] Figure 4 is a schematic diagram of the internal structure of the liquid outlet pipe according to the present invention;

[0030] Figure 5 is an exploded view of the internal structure of the liquid outlet pipe according to the present invention;

[0031] Figure 6 is a schematic diagram of the internal structures of the liquid inlet pipe and the mixing pipe according to the present invention.

[0032] In the figure: 1, treatment tank; 2, mixing device; 3, dryer; 4, liquid inlet pipe; 5, mixing pipe; 6, connecting pipe; 7, shunt pipe; 8, first partition; 9, second partition; 10, liquid outlet pipe; 11, liquid spraying cover; 12, air inlet ring; 13, air pump; 14, air spraying holes; 15, air inlet plate; 16, positioning ring; 17, shunt sleeve; 18, dispersion plate; 19, first rotating ring; 20, second rotating ring; 21, driving blades; 22, first magnetic ring; 23, dispersion net; 24, second magnetic ring; 25, protective cover; 26, driving motor; 27, mixing shaft; 28, first mixing blade; 29, second mixing blade. Detailed Embodiments

[0033] The preferred embodiments of the present invention will be described below with reference to the drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0034] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Embodiment 1

[0036] The embodiment of the present invention provides a preparation process for cashmere core-spun yarn, as Figures 1-6 shown, including the following steps:

[0037] S1: Preparation of cashmere roving: Obtain cashmere raw materials, card the cashmere raw materials to obtain cashmere fibers, make the cashmere fibers into cashmere roving through the roving process, and reserve the cashmere roving after antistatic treatment. The antistatic treatment includes: spraying the antistatic mixture on the cashmere roving for the first time and performing the first drying. The first spraying duration is 15 minutes, the first drying duration is 10 minutes, and the first drying temperature is 40 °C; spraying the antistatic mixture on the cashmere roving for the second time and performing the second drying. The second spraying duration is 20 minutes, the second drying duration is 20 minutes, and the second drying temperature is 55 °C; spraying the antistatic mixture on the cashmere roving for the third time and performing the third drying. The third spraying duration is 10 minutes, the third drying duration is 15 minutes, and the third drying temperature is 50 °C;

[0038] S2: Preparation of core yarn, including obtaining core yarn fibers. The core yarn fibers are made of antistatic polyester, and a conductive layer is provided outside the core yarn fibers. The conductive layer is made by spraying conductive paint, and the thickness of the conductive layer is 3 μm;

[0039] S3: Core-spun treatment: Use the cashmere roving as the outer fiber and wrap it around the core yarn in the core-spun yarn manner in the spinning process to obtain the cashmere core-spun yarn.

[0040] The antistatic mixture includes wool lubricant and antistatic agent. The antistatic mixture is prepared by mixing the wool lubricant and the antistatic agent through a mixing device 2, and the mixing ratio of the wool lubricant to the antistatic agent is 1:1;

[0041] The antistatic treatment is carried out inside the treatment box 1. A conveying device is arranged inside the treatment box 1, and the conveying device is used for conveying the raw cashmere yarn. Treatment lines are arranged on both the upper and lower sides of the raw cashmere yarn. The treatment line includes a first spraying station, a first drying station, a second spraying station, a second drying station, a third spraying station, and a third drying station arranged in sequence. Mixing devices 2 are arranged inside the first spraying station, the second spraying station, and the third spraying station, and dryers 3 are arranged inside the first drying station, the second drying station, and the third drying station. The opening duration of the mixing device 2 is set according to the spraying duration, and the opening duration of the dryer 3 is set according to the drying duration;

[0042] The mixing device 2 includes two liquid inlet pipes 4 and a mixing pipe 5. The mixing pipe 5 is in a Y-shaped structure. The mixing pipe 5 is located at the output ends of the two liquid inlet pipes 4. The two input ends of the mixing pipe 5 are respectively connected to the output ends of the liquid inlet pipes 4 through connecting pipes 6. A liquid inlet pump is arranged at the input end of the liquid inlet pipe 4. A flow dividing pipe 7 is arranged at one end of the mixing pipe 5 away from the connecting pipe 6. A first partition plate 8 is arranged inside the connecting pipe 6. One end of the first partition plate 8 is connected to the inner wall of the connecting pipe 6, and a second partition plate 9 is arranged at the other end of the first partition plate 8. One end of the second partition plate 9 close to the flow dividing pipe 7 extends to the flow dividing pipe 7. The first partition plate 8 and the second partition plate 9 divide the connecting pipe 6 into a liquid inlet chamber and a liquid outlet chamber. A communication hole is arranged on the side wall of the connecting pipe 6, and a liquid outlet pipe 10 is arranged at the communication hole. One end of the liquid outlet pipe 10 away from the connecting pipe 6 is provided with a liquid spraying cover 11, and the liquid spraying cover 11 faces the surface of the raw cashmere yarn;

[0043] An air inlet ring 12 is arranged outside the liquid outlet pipe 10. The air inlet ring 12 is sleeved outside the liquid outlet pipe 10. An air inlet chamber is arranged inside the air inlet ring 12. An air pump 13 is arranged outside the air inlet ring 12. The output end of the air pump 13 is communicated with the air inlet chamber. A plurality of air spraying holes 14 are arranged on the outer wall of the liquid outlet pipe 10. A plurality of air inlet plates 15 are arranged on one side of the air inlet ring 12 close to the liquid spraying cover 11. The air inlet plates 15 correspond to the air spraying holes 14 one by one. One end of the air inlet plate 15 is connected to the air spraying hole 14, and the other end of the air inlet plate 15 is connected to the air inlet ring 12. A flow channel is arranged inside the air inlet plate 15. One end of the flow channel is communicated with the inside of the liquid outlet pipe 10 through the air spraying hole 14, and the other end of the flow channel is communicated with the air inlet chamber;

[0044] A positioning ring 16 is arranged at one end of the liquid outlet pipe 10 close to the liquid spraying cover 11. A flow dividing sleeve 17 is arranged on one side of the positioning ring 16 close to the liquid spraying cover 11. A plurality of dispersing plates 18 are arranged on one side of the flow dividing sleeve 17 close to the liquid spraying cover 11. One end of the dispersing plate 18 away from the flow dividing sleeve 17 extends into the liquid spraying cover 11;

[0045] A first rotating ring 19 and a second rotating ring 20 are arranged inside the liquid outlet pipe 10. The outer walls of the first rotating ring 19 and the second rotating ring 20 are respectively rotationally connected to the inner wall of the liquid outlet pipe 10. A rotating shaft is arranged at the center of the first rotating ring 19. The rotating shaft is connected to the inner wall of the first rotating ring 19 through a plurality of connecting rods. A plurality of driving blades 21 are arranged on the rotating shaft. The driving blades 21 are located between the spray holes 14 and the liquid spraying cover 11. A first magnetic ring 22 is arranged on one side of the first rotating ring 19 close to the liquid spraying cover 11. The second rotating ring 20 is located between the first rotating ring 19 and the liquid spraying cover 11. A dispersion net 23 is arranged inside the second rotating ring 20. A second magnetic ring 24 is arranged on one side of the second rotating ring 20 close to the first rotating ring 19. The magnetic poles of the mutually approaching sides of the first magnetic ring 22 and the second magnetic ring 24 are opposite to each other;

[0046] A protective cover 25 is arranged at one end of the shunt pipe 7 far away from the liquid inlet pipe 4. A driving motor 26 is arranged inside the protective cover 25. A mixing shaft 27 is arranged at the output end of the driving motor 26. One end of the mixing shaft 27 extends into the mixing pipe 5 and is provided with a first mixing blade 28. A plurality of second mixing blades 29 are arranged on the outer wall of the mixing shaft 27. The second mixing blades 29 are located inside the shunt pipe 7.

[0047] The working principle and beneficial effects of the above technical solution are as follows: When preparing traditional cashmere core-spun yarn, it is necessary to spray and soak it with an antistatic agent solution for 23 to 25 hours to fully and evenly absorb moisture before use. This not only takes too long waiting time, resulting in low efficiency in preparing cashmere core-spun yarn, but also requires preparing a space for placing cashmere fibers after spraying and soaking the antistatic agent solution, causing waste of space. Therefore, this application provides a preparation process for cashmere core-spun yarn. During preparation, first prepare the washed cashmere raw materials, then card the cashmere raw materials to obtain cashmere fibers. The cashmere fibers are made into cashmere roving through the roving process, and the cashmere roving is subjected to antistatic treatment and then reserved. The antistatic treatment is carried out in the treatment box 1. Specifically, the cashmere roving is placed on the conveying device, and then the cashmere roving is conveyed into the treatment box 1 through the conveying device. When the cashmere roving passes through the first spraying station, the mixing device 2 sprays the antistatic mixture on the cashmere roving for the first time, and the first spraying duration is 15 minutes. Then it moves to the first drying station and is dried by the dryer 3. The first drying duration is 10 minutes, and the first drying temperature is 40°C. Through the first spraying and the first drying, the antistatic mixture is initially penetrated into the cashmere roving and will not volatilize quickly due to too high temperature, preparing for the penetration of the subsequent antistatic mixture; when the cashmere roving passes through the second spraying station, the mixing device 2 sprays the antistatic mixture on the cashmere roving for the second time, and the second spraying duration is 20 minutes. Then it moves to the second drying station, and the second drying duration is 20 minutes, and the second drying temperature is 55°C. The second spraying and drying duration is the longest, which can make the antistatic mixture fully penetrate into the cashmere roving, improve the permeability of the antistatic mixture, and through long-time drying, the antistatic mixture forms a film on the surface of the cashmere roving, enhancing the binding effect between the antistatic mixture and the inside of the cashmere roving and improving the antistatic performance; then the cashmere roving enters the third spraying station, and the mixing device 2 sprays the antistatic mixture on the cashmere roving for the third time, and the third spraying duration is 10 minutes. Finally, through the third drying station, the third drying duration is 15 minutes, and the third drying temperature is 50°C. Through the third spraying, the antistatic mixture can be further spread over the surface of the cashmere roving, improving the uniformity of the antistatic mixture on the surface of the cashmere roving and the consistency of the surface of the cashmere roving. Through the third drying station, the cashmere roving can be completely dried, and the third drying temperature is moderate and will not damage the cashmere roving. The total time for the cashmere roving to pass through the treatment box 1 is 90 minutes, and the antistatic treatment time is short, shortening the preparation time of the cashmere core-spun yarn and improving the preparation efficiency;During the antistatic treatment, the preparation of the core yarn can be carried out simultaneously to further improve the preparation efficiency. By setting a conductive layer outside the core yarn fiber, the conductivity of the core yarn is improved, which can accelerate the propagation and dissipation of charges, prevent the accumulation of charges on the surface of the core yarn, and further enhance the overall antistatic performance of the cashmere core-spun yarn. Finally, the core-spun treatment is carried out, using the cashmere roving as the outer wrapping fiber and wrapping it around the core yarn to finally obtain the cashmere core-spun yarn;

[0048] The mixing device 2 can mix the wool lubricant and the antistatic agent to form an antistatic mixture and uniformly spray the antistatic mixture onto the cashmere roving. Specifically:

[0049] The mixing device 2 includes two liquid inlet pipes 4. By starting the corresponding liquid inlet pumps, the wool lubricant flows into one liquid inlet pipe 4, and the antistatic agent flows into the other liquid inlet pipe 4. The wool lubricant and the antistatic agent respectively flow into the mixing pipe 5 through the liquid inlet cavity and collide convectively in the mixing pipe 5 to generate turbulence, so that a preliminary mixture is formed due to the action of turbulence to form an antistatic mixture. Then the antistatic mixture flows into the liquid outlet cavity and flows into the liquid outlet pipe 10 through the communication holes, and finally sprays onto the cashmere roving from the liquid spraying hood 11, and the antistatic mixture penetrates into the interior of the cashmere roving;

[0050] When the antistatic mixture enters the liquid outlet pipe 10, the air pump 13 is started. The air pump 13 sends external gas to the air inlet cavity of the air inlet ring 12, and then flows into the air spraying holes 14 through the flow channels of the air inlet plate 15. The high-speed air flow impacts the antistatic mixture, causing the antistatic mixture to disperse and produce an atomization effect, which helps the antistatic mixture to be uniformly sprayed onto the cashmere roving. Since the antistatic mixture in the form of water mist will not flatten the cashmere fibers, it will not block the entry of the antistatic mixture into the cashmere roving, which helps the antistatic mixture to quickly enter the interior of the cashmere roving, enhances the spraying effect of the antistatic mixture, and improves the antistatic treatment effect;

[0051] A dispersion net 23 is arranged in the liquid outlet pipe 10. When the antistatic mixture passes through the dispersion net 23, the antistatic mixture can be dispersed. Then the dispersed antistatic mixture is further dispersed when passing through the dispersion plate 18, and finally is dispersed and sprayed onto the surface of the cashmere roving from the liquid spraying hood 11 in different directions, improving the dispersion degree of the antistatic mixture and expanding the spraying range of the antistatic mixture;

[0052] Turbulence can be further generated at the intersection of the high-speed air flow and the antistatic mixture. When the antistatic mixture flows through the driving blade 21, it can drive the driving blade 21 to rotate. Thus, the connecting rod on the rotating shaft drives the first rotating ring 19 to rotate inside the liquid outlet pipe 10. The rotation of the first rotating ring 19 drives the rotation of the first magnetic ring 22. The magnetic poles of the first magnetic ring 22 and the second magnetic ring 24 are opposite. Therefore, the rotation of the first magnetic ring 22 drives the rotation of the second magnetic ring 24. The rotation of the second magnetic ring 24 drives the second rotating ring 20 to rotate inside the liquid outlet pipe 10. The second rotating ring 20 drives the dispersion net 23 to rotate, further dispersing the passing antistatic mixture.

[0053] At the same time, starting the driving motor 26 can drive the mixing shaft 27 to rotate. The rotation of the mixing shaft 27 drives the rotation of the first mixing blade 28 and the second mixing blade 29, further improving the mixing effect of the wool lubricant and the antistatic agent, improving the consistency of spraying the antistatic mixture, and ensuring excellent antistatic effect of the cashmere roving.

[0054] Example 2

[0055] The preparation process of the cashmere core-spun yarn in this example is prepared according to the preparation process of the above Example 1, with the only difference being that:

[0056] The first spraying duration is 20 min, the first drying duration is 12 min, and the first drying temperature is 45 °C;

[0057] The second spraying duration is 25 min, the second drying duration is 22 min, and the second drying temperature is 60 °C;

[0058] The third spraying duration is 15 min, the third drying duration is 17 min, and the third drying temperature is 55 °C;

[0059] Example 3

[0060] The preparation process of the cashmere core-spun yarn in this example is prepared according to the preparation process of the above Example 1, with the only difference being that:

[0061] The first spraying duration is 25 min, the first drying duration is 15 min, and the first drying temperature is 50 °C;

[0062] The second spraying duration is 30 min, the second drying duration is 25 min, and the second drying temperature is 65 °C;

[0063] The third spraying duration is 20 min, the third drying duration is 20 min, and the third drying temperature is 60 °C.

[0064] Example 4

[0065] The preparation process of the cashmere core-spun yarn in this embodiment is carried out according to the preparation process of the above-mentioned embodiment 1, with the only difference being that:

[0066] The conductive layer is made by composite weaving of carbon fiber and metal fiber materials.

[0067] Comparative Example 1

[0068] The preparation process of the cashmere core-spun yarn includes:

[0069] Preparation of cashmere roving: Obtain cashmere raw materials, card the cashmere raw materials to obtain cashmere fibers, and make the cashmere fibers into cashmere roving through the roving process;

[0070] Preparation of core yarn;

[0071] Core-spun treatment: Take the cashmere roving as the outer wrapping fiber and wrap it around the core yarn in the core-spun yarn method in the spinning process to obtain the cashmere core-spun yarn.

[0072] Comparative Example 2

[0073] The preparation process of the cashmere core-spun yarn includes:

[0074] Preparation of cashmere roving: Obtain cashmere raw materials, card the cashmere raw materials to obtain cashmere fibers, spray and soak them with an antistatic agent solution with a mass percentage of 0.4 - 0.6% for 25 hours to fully and evenly absorb moisture, and then make the cashmere fibers into cashmere roving through the roving process;

[0075] Preparation of core yarn;

[0076] Core-spun treatment: Take the cashmere roving as the outer wrapping fiber and wrap it around the core yarn in the core-spun yarn method in the spinning process to obtain the cashmere core-spun yarn.

[0077] Performance test:

[0078] Carry out the antistatic performance test on the cashmere core-spun yarns obtained in the above-mentioned embodiments and comparative examples in an environment with a temperature of 20°C ± 2°C and a humidity of 25% ± 5%. The test results are shown in Table 1.

[0079] Table 1

[0080]

[0081]

[0082] As can be seen from the data in Table 1, compared with Examples 1 to 4, the cashmere roving in Comparative Example 1 was not antistatic treated, and the resistivity of the prepared cashmere core-spun yarn was high, with high insulation and a relatively long half-life, resulting in poor antistatic performance in Comparative Example 1; in Comparative Example 2, the additional preparation time was 25 h, much longer than that of Examples 1 to 4, and the waiting time in Comparative Example 2 was too long, resulting in low preparation efficiency of the cashmere core-spun yarn in Comparative Example 2; in summary, the cashmere core-spun yarn prepared in Examples 1 to 4 was antistatic treated, reducing the resistivity of the cashmere core-spun yarn, shortening the electrostatic half-life to within 0.5 s, improving the antistatic performance of the cashmere core-spun yarn, and Examples 1 to 4 could significantly shorten the preparation time of the cashmere core-spun yarn and improve the preparation efficiency of the cashmere core-spun yarn.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0084] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described here.

Claims

1. A preparation process for cashmere core-spun yarn, characterized in that, It includes the following steps: Preparation of cashmere roving: Obtain cashmere raw materials, card the cashmere raw materials to obtain cashmere fibers, make the cashmere fibers into cashmere roving through the roving process, and conduct antistatic treatment on the cashmere roving for standby; Preparation of core yarn; Core-spun treatment: Take the cashmere roving as the outer wrapping fiber and wrap it around the core yarn in the core-spun yarn method during the spinning process to obtain the cashmere core-spun yarn.

2. The preparation process of a cashmere core-spun yarn according to claim 1, characterized in that, The antistatic treatment includes: Spray the antistatic mixture on the cashmere roving for the first time and conduct the first drying; Spray the antistatic mixture on the cashmere roving for the second time and conduct the second drying; Spray the antistatic mixture on the cashmere roving for the third time and conduct the third drying.

3. The preparation process of a cashmere core-spun yarn according to claim 2, characterized in that, The antistatic mixture includes wool lubricant and antistatic agent, and the antistatic mixture is prepared by mixing the wool lubricant and the antistatic agent through a mixing device.

4. The preparation process of a cashmere core-spun yarn according to claim 2, characterized in that, The first spraying duration is 15 min to 25 min, the first drying duration is 10 min to 15 min, and the first drying temperature is 40°C to 50°C.

5. The preparation process of a cashmere core-spun yarn according to claim 2, characterized in that, The second spraying duration is 20 min to 30 min, the second drying duration is 20 min to 25 min, and the second drying temperature is 55°C to 65°C.

6. The preparation process of a cashmere core-spun yarn according to claim 2, characterized in that, The third spraying duration is 10 min to 20 min, the third drying duration is 15 min to 20 min, and the third drying temperature is 50°C to 60°C.

7. A process for preparing a cashmere core-spun yarn according to claim 1, characterized in that, The preparation of core yarn includes obtaining core yarn fibers and setting a conductive layer on the outside of the core yarn fibers.

8. The preparation process of a cashmere core-spun yarn according to claim 7, characterized in that, The conductive layer is made by composite weaving of carbon fiber and metal fiber materials.

9. The preparation process of a cashmere core-spun yarn according to claim 7, characterized in that, The conductive layer is made by spraying conductive paint.

10. A process for preparing a cashmere core-spun yarn according to claim 9, characterized in that, The thickness of the conductive layer is 3 - 11 μm.

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