High-loft warm goose down blended yarn and method for manufacturing the same

Abstract

The application belongs to the field of spinning and yarn, and provides a preparation method of high-loft warm eiderdown blended yarn, comprising the following steps: selecting pure white eiderdown with eiderdown content greater than or equal to 95%, fiber length of 10mm-30mm and loft of AAAA grade or above as eiderdown; selecting wool as base material fiber, and the blending ratio of eiderdown is less than or equal to 30%, and the rest is wool; pretreating the eiderdown and the wool respectively, then combining the eiderdown and the wool to obtain a mixture; combing the mixture, then performing head doubling, two doubling, roving, twisting, twisting and self-winding, and the high-loft warm eiderdown blended yarn is obtained. Wool fiber is used as the base material to provide the yarn body framework and strength support of the yarn, the strength and moisture absorption of the yarn are improved, and the dyed wool and white eiderdown are mixed to highlight the white quality of the eiderdown.

Description

Technical Field

[0001] This invention belongs to the field of spinning and yarn, and relates to a high-loft, warm goose down blended yarn and its preparation method. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] Traditional goose down materials are difficult to spin directly due to their strong hydrophobicity, short fibers, silky and fluffy texture, and lack of cohesion between fibers, and can only be used as filling materials. At the same time, due to the above characteristics, goose down yarn cannot be mass-produced using conventional spinning equipment, which limits its application in blended yarns.

[0004] On the other hand, in order for goose down blended yarn to have better warmth retention, it needs to have a three-dimensional and fluffy appearance.

[0005] One study disclosed a heat-retaining H-shaped PET filament woven from warp and weft threads, with the warp threads being a blend of white goose down fibers and cotton satin fibers. However, this method is a weaving process, completely different from a spinning process.

[0006] A study has disclosed a recycled polyester eco-friendly fabric in which the skin-contact layer includes goose down fibers and silk fibers. The goose down fibers are cylindrical, and the silk fibers are wrapped around the surface of the goose down fibers, with the goose down and silk fibers interwoven. However, the goose down fibers appear as an auxiliary structure in the fabric, making it difficult to achieve a three-dimensional and fluffy appearance.

[0007] Therefore, there is an urgent need to develop blended yarns that use goose down fibers for separate spinning and have a three-dimensional, fluffy appearance. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides a high-loft, warm goose down blended yarn and its preparation method. This invention utilizes the natural crimp and scaly structure of wool, resulting in relatively high surface friction. Wool tightly wraps around and holds the silky, lightweight goose down, forming effective cohesion and reducing spinning difficulty. Simultaneously, this invention omits the combing process to improve the strength of the blended yarn, thereby achieving the preparation of a high-loft, warm goose down blended yarn.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] In a first aspect, the present invention provides a method for preparing a high-loft, warm goose down blended yarn, comprising:

[0011] Goose down with a down content of ≥95%, fiber length of 10mm-30mm, and a loft of AAAA or above is selected as the goose down fiber.

[0012] Wool is selected as the base fiber, with an average length of 40mm-80mm, a short fiber rate of 5%-12%, and an average fineness of 16μm-25μm. The blending ratio of goose down fiber is less than 30%, with the remainder being wool.

[0013] Goose down and wool are pretreated separately, and then blended to obtain a mixed material;

[0014] The mixture is obtained by passing it through combing, first doubling, second doubling, roving, twisting, and self-winding.

[0015] The blending ratio of this invention is below 30% goose down, providing core warmth, with fiber lengths of 10-30mm. The remainder uses wool as a base material, providing the yarn skeleton and strong support, improving yarn strength and moisture absorption. Dyed wool is used to blend with white goose down, highlighting the pure white texture of the down clusters. When the goose down ratio is too high, the flyaway fibers are difficult to control, resulting in a loose yarn structure. This invention uses a blending ratio of below 30%, balancing functionality and process feasibility, making it suitable for various application scenarios.

[0016] In a second aspect, the present invention provides a high-loft, warm goose down blended yarn prepared by the above-described method.

[0017] Beneficial effects of the present invention

[0018] (1) This invention utilizes the natural crimp and scale structure of wool, and the relatively large friction of the fiber surface. The wool tightly wraps around and holds the silky and light goose down to form an effective cohesive force, which reduces the difficulty of spinning. At the same time, this invention omits the combing process to improve the strength of the blended yarn, thereby realizing the preparation of high-loft and warm goose down blended yarn.

[0019] (2) The blended yarn prepared by this invention has the advantages of strong warmth retention, light weight and high loft, good moisture absorption and breathability, and is suitable for underwear, sportswear and high-end home textiles. Appearance effect: The blending of dark fibers and white goose down clusters forms a "dark background with white down" visual effect, which combines warmth and fashion.

[0020] (3) The preparation method of the present invention is simple, practical and easy to promote. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. Exemplary embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1This is a photograph of the brown fabric prepared in Example 4.

[0023] Figure 2 A photograph of the red fabric prepared in Example 4.

[0024] Figure 3 This is a photograph of the blue fabric prepared in Example 4.

[0025] Figure 4 This is a photograph of the black fabric prepared in Example 4. Detailed Implementation

[0026] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of skill in the art. The reagents and raw materials used in this invention are readily available through conventional means, and unless otherwise specified, they are used in accordance with conventional methods in the art or product instructions. Similarly, unless otherwise specified, the test methods of this invention are performed in accordance with conventional methods in the art or industry-standard methods or practices. Furthermore, any methods and materials similar to or equivalent to those described herein may be applied to the methods of this invention. The preferred embodiments and materials described herein are for illustrative purposes only.

[0028] As described in the background section, goose down fibers are currently short and have low strength, making them prone to breakage during the drafting and twisting processes of spinning. This makes it difficult to form effective inter-fiber cohesion, resulting in poor yarn strength. Secondly, because goose down is generally smooth and lacks the natural crimp of wool, the coefficient of friction between fibers is low, leading to weak cohesion. This is the main reason why the yarn is prone to disintegration and why goose down easily "flies away" during processing. During opening, mixing, and conveying, it is easily scattered by airflow, causing production difficulties. Finally, goose down fibers easily generate static electricity when rubbing against machines in a dry environment. This static electricity exacerbates fiber scattering and entanglement, hindering smooth production.

[0029] Therefore, the present invention provides a method for preparing a high-loft, warm goose down blended yarn, comprising:

[0030] Goose down with a down content of ≥95%, fiber length of 10mm-30mm, and a loft of AAAA or above is selected as the goose down fiber.

[0031] Wool is selected as the base fiber, with an average length of 40mm-80mm, a short fiber rate of 5%-12%, and an average fineness of 16μm-25μm. The blending ratio of goose down fiber is less than 30%, with the remainder being wool.

[0032] Goose down and wool are pretreated separately, and then blended to obtain a mixed material;

[0033] The mixture is obtained by passing it through combing, first doubling, second doubling, roving, twisting, and self-winding.

[0034] In order to enable the wool to tightly wrap around and hold the silky and light goose down to form an effective cohesive force, the present invention studied the specifications of the wool. The cohesive force is optimal when the average length of the wool is 40-80mm, the short fiber rate is 5-12%, and the average fineness is 16μm-25μm.

[0035] Preferably, the blending ratio of goose down fiber is 5%-15% or 15%-30%, with the remainder being wool; more preferably, it is 5%, with the remainder being wool, to obtain a better three-dimensional fluffy effect.

[0036] Preferably, the specific steps of the goose down pretreatment are as follows: spraying a first auxiliary agent, sealing and letting it sit for at least 24 hours, the first auxiliary agent being composed of the following raw materials in parts by weight: 3-4 parts wool oil, 0.5-1 parts reinforcing agent, and 5-7 parts water; this invention increases the strength of the goose down yarn by spraying a reinforcing agent; simultaneously, by mixing goose down with wool, the advantages of wool's crimp and high friction are utilized to improve the cohesion between fibers, thus increasing the strength of the goose down yarn. Finally, water is used to increase the weight of the goose down, reducing its scattering; the friction of the wool is used to bind the goose down together, reducing its dispersion.

[0037] Preferably, the specific steps of the wool pretreatment are as follows: spraying a second auxiliary agent, sealing and allowing it to stand for at least 24 hours, wherein the second auxiliary agent is composed of the following raw materials in parts by weight: 5-6 parts of antistatic agent, 1-2 parts of wool oil, and 8-10 parts of water. This invention sprays an antistatic agent onto wool to reduce static electricity.

[0038] Preferably, the specific conditions for the mixing are as follows: mixing is carried out by horizontal laying and vertical cutting, cylinder speed is 150r / min-180r / min, and a BC262 mixing machine can be used for mixing.

[0039] Preferably, the specific conditions for combing are as follows: cylinder speed 260r / min-300r / min, licker-in speed 580r / min-600r / min, doffer speed 20r / min-22r / min, sliver weight 20g / 5m-23g / 5m, cylinder-flat plate spacing 20mm, 18mm, 18mm, 18mm, 20mm, and licker-in plate spacing 9mm; in order to improve the quality of the sliver, promote fiber uniformity, and reduce or remove impurities, stray fibers, and film that are detrimental to spinning.

[0040] Preferably, the specific conditions for the first-joining process are as follows: 8-10 fibers joined together, fiber sliver weight 17g / 5m-18g / 5m, machine speed 100m / min-120m / min, draw ratio 8.5-9.0, and roller spacing 25×30mm; in order to improve the uniformity, straightness and structure of the fiber sliver, and lay the foundation for the subsequent second-joining process.

[0041] Preferably, the specific conditions for the two-ply combination are as follows: 8-10 first-pass slivers are combined, the sliver weight is 17g / 5m-18g / 5m, the machine speed is 80m / min-90m / min, the draft ratio is 7.0-8.0, and the roller spacing is 25×30mm; so as to combine two single yarns into one ply, thereby improving yarn strength, uniformity and production efficiency.

[0042] Preferably, the specific conditions of the roving are as follows: basis weight 4.0g / 10m-5.0g / 10m, spindle speed 600r / min-700r / min, mechanical drafting ratio 7.0-9.0, and twist coefficient 100-110, so as to process the sliver into roving with a certain fineness and strength through drafting, twisting and other processes.

[0043] Preferably, the conditions for the twisting are as follows: using goose down roving as the decorative yarn and wool single yarn as the core yarn, spinning 13NM / 1 covered yarn, with a yarn twist of 430 twists / m-450 twists / m, a speed of 10m / min-12m / min, and an overfeed ratio of 1.0-1.1 times, so as to give the yarn a specific shape or color effect, while improving the physical properties of the fabric.

[0044] Preferably, the automatic winding conditions are as follows: the automatic winding machine winding speed is 500m / min-600m / min, the neps are 50%×0.8cm, the short thick yarn is 280%×2.0cm, the long thick yarn is 50%×20cm, and the long thin yarn is -40%×15cm, so as to wind the yarn into a cone yarn, thereby improving the yarn quality and production efficiency.

[0045] The present invention will be further described in detail below with reference to specific embodiments. It should be noted that the specific embodiments are explanations of the present invention and not limitations thereof.

[0046] In the following examples and comparative examples, crude oil was a commercially available product purchased from Beijing Fangxing Jiarun Science and Trade Co., Ltd.

[0047] The reinforcing agent is a commercially available product, purchased from Shanghai Stephenson Trading Co., Ltd.

[0048] The antistatic agent was a commercially available product, purchased from Beijing Zhongfang Chemical Co., Ltd.

[0049] Example 1: Goose down / wool blend yarn

[0050] Goose down fiber: The down clusters are extracted from goose down, and pure white goose down with a down content of ≥95% are selected; the fiber length is 10mm-30mm, and the loft is AAAA grade to increase the whiteness and brightness of the fiber; the goose down fiber is washed, disinfected, and deodorized to weaken its hydrophobicity and increase its hydrophilicity.

[0051] Substrate fiber: Wool (average wool length 52mm, short fiber rate 10.5%, average fineness 18.48μm) is selected as the carrier to improve yarn strength and spinnability.

[0052] Process flow: Raw material mixing (goose down and wool, equipment model: BC262) – Carding (equipment model: FB220) – First drawing (equipment model: JWF1312) – Second drawing (equipment model: JWF1312) – Roving (equipment model: JWF1425) – Fancy twisting machine (equipment model: QFB735K) – Winding (equipment model: 21C-S), specifically including:

[0053] 1. Raw material pretreatment:

[0054] Goose down fiber: Spray with the first auxiliary agent and seal for more than 24 hours. The first auxiliary agent is composed of the following raw materials in parts by weight: 3 parts wool oil, 0.5 parts reinforcing agent, and 5 parts water. It enhances the friction and adhesion between fibers, increases the weight of the fibers, reduces fiber fly-off, and improves spinnability.

[0055] Wool fiber: Spray with the second auxiliary agent, seal and let stand for at least 24 hours. The second auxiliary agent consists of the following raw materials in parts by weight: 5 parts antistatic agent, 1 part wool oil, and 8 parts water, to balance the moisture regain and reduce static electricity adsorption. Wool has a natural crimp and scaly structure, and the surface friction of the fiber is relatively high. Its body can tightly wrap around and hold the silky and light goose down, forming an effective cohesive force and reducing the difficulty of spinning.

[0056] After conditioning, the raw materials are mixed using a horizontal and vertical cutting method. The mixing process should be slow and gentle to ensure uniform mixing. The cylinder speed should be controlled at 150 rpm during mixing to reduce excessive impact that could damage fibers and cause down to escape. The mixing ratio is: 10% goose down and 90% wool.

[0057] 2. Combing:

[0058] The blended material is fed into a carding machine, employing a process principle of "flexible carding, extra-large spacing, slow speed, and large quantity." This reduces the speed of the cylinder and doffer, minimizing the scattering and damage of down fibers and ensuring the integrity of the down clusters during transfer. The goal is to initially entangle and bind the down and wool fibers together to form a sliver. The cylinder speed is 260 rpm, the licker-in speed is 580 rpm, the doffer speed is 20 rpm, and the licker-in-feed plate spacing is 9 mm. The sliver weight is 20 g / 5 m, and the cylinder-flat plate spacing is 20 mm, 18 mm, 18 mm, 18 mm, and 20 mm to ensure the parallelism and straightness of the wool fibers and the integrity of the down clusters.

[0059] 3. Combined strips:

[0060] First drawing: The sliver output speed is controlled at a relatively slow speed to reduce the flyaway of fibers. 8 slivers are drawn together, with a sliver weight of 17g / 5m, a machine speed of 100m / min, a draft ratio of 8.5, and a roller spacing of 25×30mm.

[0061] Second-stage sliver combining: 8 first-stage slivers combined, sliver weight 17g / 5m, machine speed 80m / min, draft ratio 7.0, roller spacing 25×30mm.

[0062] 4. Roving:

[0063] Slightly higher twist is controlled to improve the cohesion between goose down and wool fibers, reducing down shedding and scattering; basis weight 4.0g / 10m, spindle speed 600r / min, mechanical drafting ratio 7.0, twist coefficient 100.

[0064] 5. Fancy twisting machine:

[0065] Using goose down roving as the finishing yarn and wool single yarn as the core yarn, a 13NM / 1 covered yarn is spun, which combines the strength and resilience of wool with the fluffiness and flowiness of goose down fibers. The yarn twist is 430 twists / m, the speed is 10m / min, and the overfeed ratio is 1.0.

[0066] 6. Winding:

[0067] The automatic winding machine has a winding speed of 500m / min, and the yarn clearing threshold is slightly loose. The neps are 50%×0.8cm, the short thick ones are 280%×2.0cm, the long thick ones are 50%×20cm, and the long thin ones are -40%×15cm. It is necessary to preserve the effect of goose down in the yarn while removing harmful defects in the yarn.

[0068] 7. Weave the above-mentioned goose down blended yarn into a fabric, so that the goose down presents a three-dimensional and fluffy style on the yarn.

[0069] Example 2

[0070] The difference from Example 1 is that the blending ratio of goose down is 5%, with the remainder being wool.

[0071] Example 3

[0072] The difference from Example 1 is that the blending ratio of goose down is 15%, with the remainder being wool.

[0073] Example 4

[0074] The difference from Example 1 is that goose down was blended with brown-dyed wool, red-dyed wool, blue-dyed wool, and black-dyed wool respectively to prepare goose down blended yarn, which was then woven into fabric, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, goose down presents a three-dimensional and fluffy style on the fabric, with dark fibers blended with white goose down clusters to create a "dark background with white down" visual effect.

[0075] Comparative Example 1

[0076] The difference from Example 1 is that silk (specifications: average length 40.67 mm, short fiber rate 5.5%, average fineness 12.53 μm) is used instead of wool.

[0077] Comparative Example 2

[0078] The difference from Example 1 is that a doubling twister is used instead of a pattern twister. The covering process is replaced by twisting three single yarns together.

[0079] Comparative Example 3

[0080] The difference from Example 1 is that a fine combing process is added after combing, with the following specific conditions: combing spacing 22mm and sliver output speed 20m / min.

[0081] The mechanical properties of the goose down blended yarns prepared in Examples 1-3 were tested according to GB / T22863-2009, as shown in Table 1.

[0082] Table 1 Performance Indicators

[0083]

[0084] Therefore, it can be seen that the goose down blended yarn prepared by the present invention has superior mechanical strength and can meet the requirements of subsequent textile processing.

[0085] The luster, hand feel, and fluffiness of the fabrics prepared in Examples 1-3 and Comparative Examples 1-3 were evaluated using a subjective evaluation method. Several professional inspectors judged the hand feel, luster, and fluffiness of the fabrics according to their own sensory perceptions, and evaluated the hand feel, luster, and fluffiness of the fabrics based on their judgment levels.

[0086] Table 2 Evaluation results of luster, hand feel and fluffiness / three-dimensionality of blended yarns

[0087]

[0088] As can be seen from the comparison between Example 1 and Comparative Example 1, compared with other natural fiber raw materials, using wool as the base fiber can better improve the cohesion effect with goose down, forming a fluffy and full three-dimensional style.

[0089] As can be seen from the comparison between Example 1 and Comparative Example 2, compared with the twisting process, the covering process can better improve the fluffiness of goose down and improve the warmth retention.

[0090] As can be seen from the comparison between Example 1 and Comparative Example 3, combing leads to a significant reduction in goose down, which cannot meet the requirements of textile manufacturing.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for preparing a high-loft, warm goose down blended yarn, characterized in that, include: Goose down with a down content of ≥95%, fiber length of 10mm-30mm, and a loft of AAAA or above is selected as the goose down fiber. Wool is selected as the base fiber, with an average length of 40mm-80mm, a short fiber rate of 5%-12%, and an average fineness of 16μm-25μm. The blending ratio of goose down fiber is less than 30%, with the remainder being wool. Goose down and wool are pretreated separately, and then blended to obtain a mixed material; The mixture is obtained by passing it through combing, first doubling, second doubling, roving, twisting, and self-winding. The specific conditions for combing are as follows: cylinder speed 260r / min-300r / min, licker-in speed 580r / min-600r / min, doffer speed 20r / min-22r / min, sliver weight 20g / 5m-23g / 5m, cylinder-flat plate distance 20mm, 18mm, 18mm, 18mm, 20mm, licker-in plate distance 9mm; The conditions for the twist are as follows: use goose down roving as the decorative yarn, wool single yarn as the core pressing yarn, spin 13NM / 1 covered yarn, yarn twist of 430 twists / m-450 twists / m, speed of 10m / min-12m / min, and overfeed ratio of 1.0-1.1 times; The blending ratio of goose down fiber is 5%-15% or 15%-30%, with the remainder being wool; The goose down blended yarn has a fluffy and full shape, with moderate down density and a fluffy and flowing effect. The specific conditions for the head-to-head combination are as follows: 8-10 heads combined, sliver weight 17g / 5m-18g / 5m, machine speed 100m / min-120m / min, draft ratio 8.5-9.0, roller spacing 25×30mm; The specific conditions for the second combination are as follows: 8-10 first-pass slivers are combined, the sliver weight is 17g / 5m-18g / 5m, the machine speed is 80m / min-90m / min, the draft ratio is 7.0-8.0, and the roller spacing is 25×30mm. The specific conditions for the roving are as follows: basis weight 4.0g / 10m-5.0g / 10m, spindle speed 600r / min-700r / min, mechanical draft ratio 7.0-9.0, and twist coefficient 100-110.

2. The method for preparing high-loft, warm goose down blended yarn as described in claim 1, characterized in that, The specific steps of the goose down pretreatment are as follows: spray the first auxiliary agent, seal and let it sit for more than 24 hours. The first auxiliary agent is composed of the following raw materials in parts by weight: 3-4 parts of wool oil, 0.5-1 parts of reinforcing agent, and 5-7 parts of water.

3. The method for preparing high-loft, warm goose down blended yarn as described in claim 1, characterized in that, The specific steps of the wool pretreatment are as follows: spray the second auxiliary agent, seal and let it sit for more than 24 hours. The second auxiliary agent is composed of the following raw materials in parts by weight: 5-6 parts of antistatic agent, 1-2 parts of wool oil, and 8-10 parts of water.

4. The method for preparing high-loft, warm goose down blended yarn as described in claim 1, characterized in that, The specific conditions for mixing the wool are as follows: mixing is carried out by horizontal laying and vertical cutting, with a cylinder speed of 30HZ-40HZ.

5. The method for preparing high-loft, warm goose down blended yarn as described in claim 1, characterized in that, The conditions for automatic winding are as follows: automatic winding machine winding speed 500m / min-600m / min, neps: 50%×0.8cm, short thick: 280%×2.0cm, long thick: 50%×20cm, long thin: -40%×15cm.

6. The high-loft, warm goose down blended yarn prepared by the method according to any one of claims 1-5.

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