Down-like yarn and production process thereof
By employing twisting, steaming, and doubling processes, the heat retention and hand feel of the down-like yarn have been improved, solving the problem of poor heat retention in existing technologies and achieving a highly efficient heat retention effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-05-08
AI Technical Summary
Existing down-like yarns have poor heat retention, affecting wearing comfort, and their complex manufacturing process results in high costs.
The process involves twisting, steaming, and doubling the twisting process, including twisting the yarn into a spiral fiber semi-processed yarn on a twisting machine, processing it through a steam vacuum dry steaming equipment, performing CNC programmed overfeeding, binding, and winding actions on a doubling machine to form a vertical loop retwisted yarn, performing a breakage process in a napping equipment, and finally forming it into a bobbin on a winding machine.
The insulation and feel of the down-like yarn have been improved, and the feel is similar to that of feathers. The single-layer fabric made from it has a thermal resistance of 0.116 m2.K/W and a heat transfer coefficient of 8.64 W/(m2.K), while the double-layer fabric has a thermal resistance of 0.231 m2.K/W and a heat transfer coefficient of 4.33 W/(m2.K), thus improving the insulation effect.
Smart Images
Figure BDA0005113233590000081
Abstract
Description
Technical Field
[0001] This invention relates to the field of yarn technology, and in particular to a down-like yarn and its manufacturing process. Background Technology
[0002] Natural down fiber is a well-known insulating material, widely used in high-end clothing and quilting. However, due to its scarcity and high price, it cannot meet people's ever-increasing material needs. In contrast, imitation down fiber is a novel quilting fiber developed in the field of synthetic fibers. It is a three-dimensional crimped hollow polyester fiber treated with silicone. It can achieve similar warmth, fluffiness, smooth and soft feel to natural down fiber. Moreover, it can rival natural down fiber in terms of fluffiness and compression resilience. It is also mildew-proof, moth-proof, abundant in resources, and cheaper than natural fibers.
[0003] Polyester raw materials are melted at high temperatures and the molten polyester is extruded under high pressure into a spinneret to obtain polyester fibers of corresponding diameters. These fibers are then processed into short fibers of various specifications through subsequent processing. During the drafting process in subsequent processing, an appropriate proportion of oil is applied to the fibers, allowing the fibers to fully physical bond with the oil within a certain temperature range. This gives the originally rough polyester fibers a silky smooth texture similar to down. However, due to the complexity of the process, the resulting yarns have poor heat retention, reducing wearing comfort. Summary of the Invention
[0004] To address the above problems, this invention provides a down-like yarn and its manufacturing process.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a production process for imitation down yarn, comprising the following steps:
[0006] S1: Load the fiber filaments onto the twisting machine and start the twisting machine to twist the fiber filaments into a spiral semi-processed fiber yarn;
[0007] S2: Place the semi-processed fiber yarn into a steaming equipment for steaming and then air-dry it after stabilizing the spiral angle of the semi-processed fiber yarn.
[0008] S3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.
[0009] S4: After winding, multiple looped retwisted yarns are fed into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, the yarn can be wound into strands simultaneously.
[0010] S5: The finely wound downy yarn is wound onto a precision winding machine to form a fixed length and constant tension bobbin. Waxing is performed simultaneously during bobbin forming to obtain the finished down-like yarn.
[0011] Preferably, in step S1, the material of the fiber filament is chemical fiber, regenerated cellulose fiber, biomass regenerated fiber, or natural fiber. Chemical fibers include polyester fiber, polypropylene fiber, ethylene glycol, or nylon fiber. Regenerated cellulose fibers include viscose, modal, and Tencel. Biomass regenerated fibers include acetate fiber and polylactic acid fiber. Natural fibers include cotton, wool, silk, and linen fibers.
[0012] Preferably, in step S1, the twisting machine rotates at a speed of 4000-8000 r / min, and the tension of the fiber is adjusted to 10-50 N.
[0013] Preferably, in step S2, the temperature of the steaming cylinder in the steaming equipment is 50-100℃, and the steaming time is 30-90min.
[0014] Preferably, in step S2, the steaming equipment is a steam vacuum dry steaming equipment, the controllable temperature of the steam vacuum dry steaming equipment is 50-150℃, and the steaming time is more than 30 minutes.
[0015] Preferably, in step S2, a tunnel-type drying box is used to dry, cool, and relax the steamed fiber yarn. The tunnel-type drying box is equipped with an air outlet mechanism for circulating and blowing the steamed fiber yarn. The controllable temperature of the tunnel-type drying box is 24-200℃, and the wind speed is 0.3*(1±20%)m / s-6*(1±20%)m / s.
[0016] The present invention also provides a down-like yarn obtained by the above-described production process.
[0017] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
[0018] This invention involves twisting, steaming, and doubling the twisting process of the fiber filaments to produce a down-like yarn whose feel and properties more closely resemble animal feathers. Yarns woven from this down-like yarn have a weight of 89 g / m². 2 The thermal resistance of a single-layer fabric can reach 0.116m. 2 The heat transfer coefficient can reach 8.64 W / (m²). 2 .K), 178g / m 2 The thermal resistance of the double-layer fabric can reach 0.231m. 2 The heat transfer coefficient can reach 4.33 W / (m²). 2 This greatly improves the insulation effect of the woven fabric, while also protecting animals and cleaning the environment. Detailed Implementation
[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with embodiments, is provided below.
[0020] Example 1
[0021] A manufacturing process for down-like yarn includes the following steps:
[0022] S1: Place the fiber filaments on a twisting machine, adjust the twisting machine speed to 4000 r / min, and adjust the tension of the fiber filaments to 10 N. The twisting machine will twist the fiber filaments into a spiral semi-processed fiber yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. The regenerated cellulose fibers include viscose, modal, and Tencel. The biomass regenerated fibers include cotton, wool, silk, and linen fibers, acetate fibers, and polylactic acid fibers. The natural fibers include cotton, wool, silk, and linen fibers.
[0023] S2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 50℃ and the scouring time to more than 30 minutes. After stabilizing the spiral angle of the scouring fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 24℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.
[0024] S3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.
[0025] S4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into skeins.
[0026] S5: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into strands.
[0027] Example 2
[0028] A manufacturing process for down-like yarn includes the following steps:
[0029] S1: Place the fiber filaments on a twisting machine, adjust the twisting machine speed to 6000 r / min, and adjust the tension of the fiber filaments to 30 N. The twisting machine will twist the fiber filaments into a spiral semi-processed fiber yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. The regenerated cellulose fibers include viscose, modal, and Tencel. The biomass regenerated fibers include cotton, wool, silk, and linen fibers, acetate fibers, and polylactic acid fibers. The natural fibers include cotton, wool, silk, and linen fibers.
[0030] S2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 100℃ and the scouring time to more than 30 minutes. After stabilizing the spiral angle of the scouring fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 110℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.
[0031] S3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.
[0032] S4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into skeins.
[0033] S5: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into strands.
[0034] Example 3
[0035] A manufacturing process for down-like yarn includes the following steps:
[0036] S1: Place the fiber filaments on a twisting machine, adjust the twisting machine speed to 8000 r / min, and adjust the tension of the fiber filaments to 50 N. The twisting machine will twist the fiber filaments into a spiral semi-processed fiber yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. The regenerated cellulose fibers include viscose, modal, and Tencel. The biomass regenerated fibers include cotton, wool, silk, and linen fibers, acetate fibers, and polylactic acid fibers. The natural fibers include cotton, wool, silk, and linen fibers.
[0037] S2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 150℃ and the steaming time to more than 30 minutes. After stabilizing the spiral angle of the steamed fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 200℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.
[0038] S3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.
[0039] S4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into skeins.
[0040] S5: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into strands.
[0041] This invention involves twisting, steaming, and doubling the twisting process of the fiber filaments to produce a down-like yarn whose feel and properties more closely resemble animal feathers. Yarns woven from this down-like yarn have a weight of 89 g / m². 2 The thermal resistance of a single-layer fabric can reach 0.116m. 2 The heat transfer coefficient can reach 8.64 W / (m²). 2 .K), 178g / m 2 The thermal resistance of the double-layer fabric can reach 0.231m. 2 The heat transfer coefficient can reach 4.33 W / (m²). 2 This greatly improves the insulation effect of the woven fabric, while also protecting animals and cleaning the environment.
[0042] The fabric woven from the down-like yarn obtained in Example 2 (the weight of a single layer of fabric is 89 g / m²) 2 The weight of the double-layer fabric is 178g / m². 2 The detailed results of its physical performance index tests are shown in the table below:
[0043]
[0044] The test results above show that the down-like yarn obtained by the production process of this invention has excellent heat preservation effect.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A production process for imitation down yarn, characterized in that, Includes the following steps: S1: Load the fiber filaments onto the twisting machine and start the twisting machine to twist the fiber filaments into a spiral semi-processed fiber yarn; S2: Place the semi-processed fiber yarn into a steaming equipment for steaming and then air-dry it after stabilizing the spiral angle of the semi-processed fiber yarn. S3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding. S4: After winding, multiple looped retwisted yarns are fed into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, the yarn can be wound into strands simultaneously. S5: The finely wound downy yarn is wound onto a precision winding machine to form a fixed length and constant tension bobbin. Waxing is performed simultaneously during bobbin forming to obtain the finished down-like yarn.
2. The production process of the imitation down yarn according to claim 1, characterized in that: In S1, the material of the fiber filament is chemical fiber, regenerated cellulose fiber, biomass regenerated fiber, or natural fiber. Chemical fiber includes polyester fiber, polypropylene fiber, ethylene ether, or nylon fiber. Regenerated cellulose fiber includes viscose, modal, and Tencel. Biomass regenerated fiber includes acetate fiber and polylactic acid fiber. Natural fiber includes cotton, wool, silk, and linen fibers.
3. The production process of the imitation down yarn according to claim 1, characterized in that: In S1, the twisting machine rotates at a speed of 4000-8000 r / min, and the tension of the fiber is adjusted to 10-50 N.
4. The production process of a down-like yarn according to claim 1, characterized in that: In S2, the steaming equipment is a steam vacuum dry steaming equipment, the controllable temperature of the steam vacuum dry steaming equipment is 50-150℃, and the steaming time is more than 30 minutes.
5. The production process of a down-like yarn according to claim 1, characterized in that: In step S2, a tunnel-type drying box is used to dry, cool, and relax the steamed fiber yarn. The tunnel-type drying box is equipped with an air outlet mechanism that circulates and blows the steamed fiber yarn. The controllable temperature of the tunnel-type drying box is 24-200℃, and the wind speed is 0.3*(1±20%)m / s-6*(1±20%)m / s.
6. A down-like yarn obtained by the production process according to any one of claims 1-5.