Moisture-absorbing yarn

Abstract

This utility model discloses a moisture-absorbing yarn, relating to the field of yarn technology, aiming to solve the problem of poor moisture absorption and breathability of chemical fiber yarns. The key technical points are: the yarn core is made by spirally winding multiple first strands of yarn around second strands; the interior of the yarn core is formed by hydrolyzing to remove the second strands, creating a cavity; several through-grooves are formed between several adjacent first strands along the yarn core axis, and these through-grooves are interconnected with the cavity; the outer covering yarn is made by twisting first and third strands. This utility model improves the air circulation between the inside and outside of the yarn through the interconnected ventilation grooves, through-grooves, and cavity. Because the moisture absorption of viscose fiber is greater than that of polyester profiled fiber, the moisture absorbed by the yarn core can be quickly transferred and dispersed into the outer covering yarn for rapid moisture dissipation. Because the diameter of the first strand is larger than that of the third strand, the polyester profiled fiber in the outer covering yarn can first come into contact with and rub against external objects, thereby reducing the wear degree of the third strand.

Description

Technical Field

[0001] This utility model relates to the field of yarn technology, and more specifically, to moisture-absorbing yarn. Background Technology

[0002] Yarn is the main material used to weave fabrics. The characteristics of yarn determine the characteristics of fabrics and clothing. Chemical fibers have good elasticity and abrasion resistance, which makes the yarns made from them more resilient and less prone to wear and breakage. This makes the woven fabrics strong, durable, wrinkle-resistant, and require no ironing.

[0003] The good elasticity and abrasion resistance of chemical fibers are due to their tight molecular structure. However, the tight molecular structure reduces the pores and surface area within the fiber, which is not conducive to air circulation and moisture penetration and diffusion. This results in poor breathability and moisture absorption in the fabric, making it easy to feel stuffy when worn. Furthermore, sweat cannot be quickly wicked away through the fabric and will block the pores formed by the weave, further reducing the breathability and causing a damp and sticky discomfort.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide moisture-absorbing yarn.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a moisture-absorbing yarn, comprising a yarn core and an outer wrapping yarn, wherein the yarn core is made by spirally winding multiple first strands of yarn around second strands, and the interior of the yarn core is formed by hydrolyzing to remove the second strands to form a cavity, the cavity being cylindrical, the twist of the first strands being 450-500 twists / meter, and several through grooves being formed between several adjacent first strands along the axial direction of the yarn core, all of which are interconnected with the cavity, the outer wrapping yarn being made by twisting the first strands and third strands in an "S" twisting manner, wherein the moisture absorption of the third strand is greater than that of the first strand.

[0007] The present invention is further configured such that: the second strand is made of polyvinyl alcohol fiber twisted together; the hydrolysis temperature of the yarn core is 70-90℃; the diameters of the first strand and the second strand are 8-12μm; and the diameter of the cavity is the same as the diameter of the second strand.

[0008] The present invention is further configured such that: the number of first strands in the yarn core is set to 4-6 strands, and the winding angle of the first strands in the yarn core is 80-95°.

[0009] The present invention is further configured such that: the first strand is made of polyester profiled fiber twisted together, the third strand is made of viscose fiber twisted together, and the diameter of the third strand in the outer covering yarn is smaller than the diameter of the first strand.

[0010] The present invention is further configured such that: the wrapping angle of the outer covering yarn is 25-40°, the wrapping twist of the outer covering yarn is 220-270 twists / meter, and the outer covering yarn is spirally wound to form a breathable groove that is interconnected with several through grooves.

[0011] In summary, this utility model has the following beneficial effects: the interconnected ventilation grooves, channels, and cavities improve the air circulation between the inside and outside of the yarn, thereby achieving good breathability. At the same time, good air circulation can accelerate the moisture dissipation speed of the yarn. Since the hygroscopicity of viscose fiber is greater than that of polyester profiled fiber, the moisture absorbed by the yarn core can be promptly transferred and dispersed to the outer yarn for rapid moisture dissipation, avoiding the long-term retention of moisture in the yarn core and difficulty in moisture dissipation. Since the diameter of the first strand is larger than that of the third strand, the polyester profiled fiber in the outer yarn can first come into contact with and rub against the skin or other clothing, thereby reducing the wear of the third strand and ensuring the service life of the yarn. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model before hydrolysis; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0013] In the diagram: 1. Yarn core; 2. Outer yarn; 3. First strand; 4. Second strand; 5. Through groove; 6. Third strand; 7. Breathing groove. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] Example: Moisture-absorbing yarn, such as Figure 1 and Figure 2As shown, it includes a core yarn 1 and an outer yarn 2. The core yarn 1 is made by spirally winding multiple strands of first strand 3 onto a single strand of second strand 4 using a vortex spinning process. The number of strands of first strand 3 in the core yarn 1 is set to 4-6. The interior of the core yarn 1 is formed by hydrolyzing and removing the second strand 4 to create a cavity. This cavity is cylindrical. The second strand 4 is formed by twisting polyvinyl alcohol fibers using a twisting machine. The hydrolysis temperature of the core yarn 1 is 70-90℃, and the hydrolysis time is not less than 30 minutes. The hydrolysis of polyvinyl alcohol fibers is the process by which a large number of hydroxyl groups in its molecular chain react with water through hydrogen bonding, and residual ester bonds undergo chemical breakage under high temperature conditions, leading to the fiber's swelling and eventual dissolution. The diameters of the first strand 3 and the second strand 4 are 8-12 μm. The diameter of the cavity is the same as that of the second strand 4. The outer yarn 2 can limit the position of the first strands 3 after the second strand 4 is removed. The first strands 3 spirally abut each other, ensuring the structural stability of the yarn. This makes the yarn core 1 form a hollow three-dimensional support structure. The first strands 3 are made by twisting polyester profiled fibers through a twisting machine. By shaping the polyester fibers, the porosity and surface area inside the fibers are increased, thereby improving the moisture absorption and breathability. In addition, the polyester profiled fibers have good elasticity, which ensures that the yarn core 1, which is made of several first strands 3, has good elasticity.

[0016] like Figures 1-3 As shown, the twist of several first strands 3 in the yarn core 1 is 450-500 twists / meter, and the twisting angle of several first strands 3 in the yarn core 1 is 80-95°, so that several through grooves 5 are formed between several adjacent first strands 3 along the axial direction of the yarn core 1. Several through grooves 5 are interconnected with the cavity. The wrapping angle of the outer wrapping yarn 2 is 25-40°, and the wrapping twist of the outer wrapping yarn 2 is 220-270 twists / meter, so that the outer wrapping yarn 2 is spirally wound to form a breathable groove 7 interconnected with several through grooves 5. The breathable groove 7 is spiral-shaped. The air circulation effect between the inside and outside of the yarn is improved through several interconnected breathable grooves 7, through grooves 5 and the cavity, thereby obtaining good air permeability. At the same time, good air circulation can accelerate the moisture dissipation speed of the yarn, so that the fabric has good air permeability and moisture dissipation.

[0017] like Figures 1-3As shown, the outer yarn 2 is made by twisting a first strand 3 and a third strand 6 using an "S" twisting method. The third strand 6 is made by twisting viscose fiber using a twisting machine. Viscose fiber has stronger moisture absorption and faster moisture dissipation characteristics than polyester profiled fiber. By adding viscose fiber into the outer yarn 2, its moisture absorption is greater than that of the yarn core 1. Therefore, the moisture absorbed by the yarn core 1 can be transferred and dispersed into the outer yarn 2 in a timely manner for rapid moisture dissipation, avoiding moisture from remaining in the yarn core 1 for a long time and blocking the through groove 5. This ensures the breathability of the yarn after moisture absorption. The diameter of the third strand 6 in the outer yarn 2 is smaller than that of the first strand 3, making the surface of the outer yarn 2 have a continuous concave-convex shape. Polyester profiled fiber has good abrasion resistance, allowing the polyester profiled fiber in the outer yarn 2 to come into contact with the skin or other clothing first, thereby reducing the wear of the third strand 6 and ensuring the service life of the yarn.

[0018] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A moisture-absorbing yarn, comprising a core (1) and an outer covering yarn (2), characterized in that: The yarn core (1) is made by spirally winding multiple first strands (3) around a second strand (4). The interior of the yarn core (1) is formed by hydrolyzing to remove the second strands (4) to form a cavity. The cavity is cylindrical. The twist of the first strands (3) is 450-500 twists / meter. Several through grooves (5) are formed between several adjacent first strands (3) along the axial direction of the yarn core (1). The through grooves (5) are all connected to the cavity. The outer yarn (2) is made by twisting the first strands (3) and the third strands (6) in an "S" twist. The hygroscopicity of the third strand (6) is greater than that of the first strand (3).

2. The moisture-absorbing yarn according to claim 1, characterized in that: The second strand (4) is made of polyvinyl alcohol fiber twisted together. The hydrolysis temperature of the yarn core (1) is 70-90℃. The diameters of the first strand (3) and the second strand (4) are 8-12μm. The diameter of the cavity is the same as the diameter of the second strand (4).

3. The moisture-absorbing yarn according to claim 2, characterized in that: The number of strands of the first strand (3) in the yarn core (1) is set to 4-6 strands, and the winding angle of the first strand (3) in the yarn core (1) is 80-95°.

4. The moisture-absorbing yarn according to claim 3, characterized in that: The first strand (3) is made of twisted polyester shaped fibers, the third strand (6) is made of twisted viscose fibers, and the diameter of the third strand (6) in the outer yarn (2) is smaller than the diameter of the first strand (3).

5. The moisture-absorbing yarn according to claim 4, characterized in that: The wrapping angle of the outer yarn (2) is 25-40°, the wrapping twist of the outer yarn (2) is 220-270 twists / meter, and the outer yarn (2) is spirally wound to form a breathable groove (7) that is interconnected with several through grooves (5).

Images