Jacquard denim fabric and preparation method thereof
By combining twisting technology and a multi-tension control system, the quality problems of chenille yarn in denim fabrics have been solved, and jacquard denim fabrics that are both stiff and soft have been produced, improving the texture and application potential of the products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional denim fabrics are prone to quality problems such as stripe defects, color difference between the center and edge, and cross-section defects when using chenille yarn, making it difficult to meet the market's demand for highly comfortable fabrics.
Chenille weft yarn is prepared by twisting process, combined with large jacquard loom and multi-tension control system. The tension of each warp yarn is monitored by high-precision sensor, breaking the traditional uniform tension field and forming an irregular stress state. Air humidity and temperature are controlled during weaving, and segmented drying treatment is carried out.
The process produces a fabric that retains the stiffness of denim while creating a three-dimensional, dense pile structure on the surface, enhancing its softness and unique luster. This solves the quality problems of chenille yarn during the weaving process and achieves a perfect fusion of stiffness and softness.
Smart Images
Figure CN121781335A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of denim fabric technology, specifically to a jacquard denim fabric and its preparation method. Background Technology
[0002] Chenille yarn, with its excellent softness and strong absorbency, is widely used in textiles such as towels and cleaning products, and is loved by consumers. However, in the denim fabric sector, traditional autumn and winter products are mostly characterized by their stiffness and ruggedness, which makes it difficult to meet the current market's growing demand for highly comfortable fabrics.
[0003] Although chenille yarn has a good hand feel and visual effect, due to its sheet-like structure, serious quality problems such as strip difference, center-edge color difference and cross-section caused by the reverse and direction of nap are prone to occur during the weaving and dyeing process, especially when chenille weft yarn is woven with denim warp yarn. This has become a global technical problem that limits the large-scale application of this material in denim fabrics.
[0004] In view of this, the present invention is hereby proposed. Summary of the Invention
[0005] The purpose of this invention is to provide a jacquard denim fabric and its preparation method. The jacquard denim fabric prepared by the method of this invention retains the stiffness required by denim, while forming a three-dimensional and dense pile structure on its surface, presenting a soft touch and unique luster, significantly improving the texture, grade and application potential of the product, and achieving a perfect fusion of stiffness and softness.
[0006] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:
[0007] The first aspect of this invention provides a method for preparing jacquard denim fabric, the method comprising the following steps:
[0008] (a) The core yarn and down yarn are spun into chenille weft yarn through a twisting process, wherein the twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 95~105 twists / meter, and twisting tension is 0.095~0.105cn / dtex;
[0009] (b) A large jacquard loom is used in conjunction with a multi-tension control system to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction point has a random force direction. Specifically, the tension of each warp yarn is monitored in real time by a high-precision sensor and dynamically adjusted by a multi-needle (1548 / 1872 needle) control system to break the traditional uniform tension field, thereby forming an irregular force state at the micro interlacing point, and thus making each junction point have a random force direction.
[0010] Preferably, in step (a), the air humidity is controlled to be no less than 70% during the twisting process.
[0011] Preferably, in step (b), the air humidity is controlled to be no less than 70% during the weaving process.
[0012] Preferably, the preparation method includes a finishing process, which includes humidification and drying;
[0013] Preferably, the humidification amount is 18%~20%, and the humidification time is no more than 2 minutes.
[0014] Preferably, the drying process employs segmented temperature control, with the first stage drying temperature at 110~120℃ and the second stage drying temperature at 130~140℃, and the drying speed at 38~42m / min.
[0015] Preferably, in step (a), the core yarn is polyester long fiber, and the down yarn is made of polyester, nylon, or cotton.
[0016] A second aspect of the present invention provides a jacquard denim fabric prepared by the above-described preparation method.
[0017] Compared with the prior art, the beneficial effects of the present invention include at least the following:
[0018] The jacquard denim fabric prepared by the method of this invention retains the stiffness required for denim while forming a three-dimensional and dense pile structure on its surface, presenting a soft touch and unique luster. This significantly enhances the texture, grade and application potential of the product, achieving a perfect fusion of stiffness and softness. The technical solution of this invention not only fills the gap in the field of denim jacquard pile fabrics, but also provides a new development direction for the green and sustainable development of the textile industry. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 A photograph of the jacquard denim fabric prepared in Example 1 of this invention;
[0021] Figure 2 A photograph of the jacquard denim fabric prepared in Comparative Example 1 of this invention;
[0022] Figure 3 A photograph of the jacquard denim fabric prepared in Comparative Example 2 of this invention;
[0023] Figure 4 A photograph of the jacquard denim fabric prepared in Comparative Example 3 of this invention;
[0024] Figure 5 This is a photograph of the jacquard denim fabric prepared in Comparative Example 4 of the present invention. Detailed Implementation
[0025] The embodiments of the technical solution of the present invention will be described in detail below with reference to the examples. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and are therefore only examples, and should not be used to limit the scope of protection of the present invention.
[0026] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
[0027] This invention project was found to have no similar technology in China by the Guangdong Provincial Institute of Science and Technology Information, was identified as "internationally leading" by the Guangdong Provincial Textile Engineering Society, was registered by the Guangzhou Municipal Science and Technology Department, and was recommended to be included in the China Association for Science and Technology's project database after preliminary review by the China Textile Engineering Society.
[0028] This invention provides a method for preparing jacquard denim fabric, the method comprising the following steps:
[0029] (a) Chenille weft yarn is obtained by spinning the core yarn and down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 95~105 twists / meter, and twisting tension is 0.095~0.105cn / dtex. Through the design of the twisting parameters, the pile structure of the chenille weft yarn is tightly combined with the yarn body to form a composite yarn that is stiff inside and fluffy outside, ensuring that there will be no shedding or separation problems in the subsequent washing process.
[0030] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction point has a random force direction.
[0031] This invention employs a large jacquard loom with a multi-tension control system, upgrading the traditional 12-piece warp yarn control system to a multi-tension, multi-needle (1548 / 1872 needle) control system. Combined with high-precision sensing technology, online tension monitoring of each warp yarn is achieved, enabling precise tension control. This improvement breaks the traditional pattern of co-current and anti-current pile caused by stable tension direction and uniform force, making the force direction at each junction point random, thus creating a uniform pile appearance. It also effectively solves problems such as dyeing segment differences, center-edge color differences, and cross-sections caused by regular pile direction.
[0032] To further improve the quality stability of denim chenille fabric and reduce the defect rate, in one embodiment, during step (a), the air humidity is controlled to be no less than 70% during the twisting process.
[0033] In one embodiment, in step (b), the air humidity is controlled to be no less than 70% during the weaving process.
[0034] Strict control of relative humidity is essential during both spinning and weaving processes. This is because chenille's core material uses high-quality polyester long fibers as the core yarn, which is created by multiple parallel core yarns interwoven with perpendicular pile fibers. The pile material currently available includes polyester, nylon, and cotton. To ensure the stability of these materials during chenille processing, the air humidity must be maintained above 70%. Appropriate humidity control can reduce yarn breakage by 60% during spinning and improve pile stability by 30%.
[0035] In one embodiment, in step (a), the core yarn is polyester long fiber, and the down yarn is made of polyester, nylon, or cotton.
[0036] In one embodiment, the preparation method includes a finishing process, which includes humidification and drying;
[0037] In one embodiment, the humidification amount is 18%~20%, and the humidification time is no more than 2 minutes.
[0038] In one embodiment, the drying process employs segmented temperature control, with the first drying stage at 110~120℃ and the second drying stage at 130~140℃, and the drying speed at 38~42m / min.
[0039] Because chenille is highly absorbent and denim warp yarns have low colorfastness, it's crucial to maintain stable water absorption and soaking time during finishing. Drying temperature and time also need to be very consistent; otherwise, color differences between the front and back, or between the center and edges, will occur. Specifically, due to chenille's high absorbency and the low colorfastness of denim warp yarns, and because chenille denim is generally more than 20% heavier than regular denim (regular denim typically weighs 360g / m², while chenille denim is generally around 440g / m²), poor finishing control can easily cause denim color to transfer onto the chenille yarns, creating defects. Therefore, it's essential to maintain stable moisture absorption (strictly controlled between 18%-20%) and moisture absorption time (strictly controlled within 2 minutes) during finishing. Drying temperature should be segmented, with the initial drying at 110-120°C and subsequent drying at 130-140°C, and the drying speed (stablely controlled at 40m / min). Otherwise, color differences between the front and back, or between the center and edges, will occur.
[0040] Another embodiment of the present invention provides a jacquard denim fabric prepared by the above preparation method.
[0041] The technical solution of the present invention will be further described in detail below through specific embodiments.
[0042] Example 1
[0043] This embodiment describes a method for preparing jacquard denim fabric, which includes the following steps:
[0044] (a) Chenille weft yarn is obtained by twisting the core yarn and the down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 100 twists / meter, twisting tension is 0.1cn / dtex; the air humidity is controlled at 75% during the twisting process; the core yarn is polyester long fiber and the down yarn is cotton.
[0045] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction has a random force direction. The air humidity is controlled at 75% during the weaving process.
[0046] (c) The finishing process of the woven fabric includes humidification and drying; the humidification amount is 19% and the humidification time is 1.5 min; the drying adopts segmented temperature control, the drying temperature of the first stage is 115℃, the drying temperature of the second stage is 135℃, and the drying speed is 40 m / min.
[0047] Comparative Example 1
[0048] This comparative example illustrates a method for preparing jacquard denim fabric, the method comprising the following steps:
[0049] (a) Chenille weft yarn is obtained by twisting the core yarn and the down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 130 twists / meter, twisting tension is 0.1cn / dtex; the air humidity is controlled at 75% during the twisting process; the core yarn is polyester long fiber, and the down yarn is cotton.
[0050] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction has a random force direction. The air humidity is controlled at 75% during the weaving process.
[0051] (c) The finishing process of the woven fabric includes humidification and drying; the humidification amount is 19% and the humidification time is 1.5 min; the drying adopts segmented temperature control, the drying temperature of the first stage is 115℃, the drying temperature of the second stage is 135℃, and the drying speed is 40 m / min.
[0052] Comparative Example 2
[0053] This comparative example illustrates a method for preparing jacquard denim fabric, the method comprising the following steps:
[0054] (a) Chenille weft yarn is obtained by twisting the core yarn and the down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 100 twists / meter, twisting tension is 0.1cn / dtex; the air humidity is controlled at 50% during the twisting process; the core yarn is polyester long fiber and the down yarn is cotton.
[0055] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction has a random force direction. The air humidity is controlled at 50% during the weaving process.
[0056] (c) The finishing process of the woven fabric includes humidification and drying; the humidification amount is 19% and the humidification time is 1.5 min; the drying adopts segmented temperature control, the drying temperature of the first stage is 115℃, the drying temperature of the second stage is 135℃, and the drying speed is 40 m / min.
[0057] Comparative Example 3
[0058] This comparative example illustrates a method for preparing jacquard denim fabric, the method comprising the following steps:
[0059] (a) Chenille weft yarn is obtained by twisting the core yarn and the down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 100 twists / meter, twisting tension is 0.1cn / dtex; the air humidity is controlled at 75% during the twisting process; the core yarn is polyester long fiber and the down yarn is cotton.
[0060] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction has a random force direction. The air humidity is controlled at 75% during the weaving process.
[0061] (c) The finishing process of the woven fabric includes humidification and drying; the humidification amount is 19% and the humidification time is 1.5 min; the drying temperature is 135℃ and the drying speed is 40 m / min.
[0062] Comparative Example 4
[0063] This comparative example illustrates a method for preparing jacquard denim fabric, the method comprising the following steps:
[0064] (a) Chenille weft yarn is obtained by twisting the core yarn and the down yarn through a twisting process. The twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 100 twists / meter, twisting tension is 0.1cn / dtex; the air humidity is controlled at 75% during the twisting process; the core yarn is polyester long fiber and the down yarn is cotton.
[0065] (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction has a random force direction. The air humidity is controlled at 75% during the weaving process.
[0066] (c) The finishing process of the woven fabric includes humidification and drying; the humidification amount is 19% and the humidification time is 3 min; the drying adopts segmented temperature control, the drying temperature of the first stage is 115℃, the drying temperature of the second stage is 135℃, and the drying speed is 40m / min.
[0067] Experimental Example
[0068] The jacquard denim fabrics from Example 1 and Comparative Examples 1-4 were obtained respectively, and the results are as follows: Figures 1-5 As shown;
[0069] Depend on Figures 1-2 It can be seen that by increasing the twist, the chenille yarn is more prone to breakage at the selvage, resulting in unstable quality.
[0070] Depend on Figure 1 and 3From ~5, we can conclude that:
[0071] Figure 1 The fabric in this application is of good quality;
[0072] Figure 3 Due to insufficient humidity, chenille with a velvet lining can generate static electricity, attracting dust into the fabric and causing defects.
[0073] Figure 4 The thick chenille fabric is dried in sections, resulting in a high-quality fabric surface.
[0074] Figure 5 Soaking for too long can cause color differences between the left, center, and right sides, or between the front and back. If a single drying cycle is used, chenille's high water absorption means that if the temperature is too low, it cannot be dried quickly enough, resulting in poor colorfastness of the denim yarn and causing color bleeding in the chenille, leading to color variations. Conversely, high temperatures can cause the chenille to stiffen, resulting in quality issues.
[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.
Claims
1. A method for preparing jacquard denim fabric, characterized in that, The preparation method includes the following steps: (a) The core yarn and down yarn are spun into chenille weft yarn through a twisting process, wherein the twisting process control parameters are as follows: twist direction is S twist, twist coefficient is 95~105 twists / meter, and twisting tension is 0.095~0.105cn / dtex; (b) A large jacquard loom with a multi-tension control system is used to weave denim warp yarns and chenille weft yarns. During the weaving process, the tension of each denim warp yarn is controlled so that each junction point has a random force direction.
2. The preparation method according to claim 1, characterized in that, In step (a), the air humidity is controlled to be no less than 70% during the twisting process.
3. The preparation method according to claim 1, characterized in that, In step (b), the air humidity is controlled to be no less than 70% during the weaving process.
4. The preparation method according to claim 1, characterized in that, The preparation method includes a finishing process, which includes humidification and drying.
5. The preparation method according to claim 4, characterized in that, The humidification rate is 18%~20%, and the humidification time is no more than 2 minutes.
6. The preparation method according to claim 4, characterized in that, The drying process employs segmented temperature control, with the first stage drying temperature at 110~120℃ and the second stage drying temperature at 130~140℃, and the drying speed at 38~42m / min.
7. The preparation method according to claim 1, characterized in that, In step (a), the core yarn is made of polyester long fiber, and the down yarn is made of polyester, nylon, or cotton.
8. Jacquard denim fabric prepared by any one of the preparation methods described in claims 1 to 7.