Moisture-absorbing and heating single-sided weft-knitted fabric and preparation method and application thereof

Abstract

The invention provides a moisture-absorbing and heating single-sided weft-knitted fabric and a preparation method and application thereof, and relates to the technical field of textiles. The moisture-absorbing and heating single-sided weft-knitted fabric is provided with a laza bead pattern weave structure; the moisture-absorbing and heating single-sided weft-knitted fabric comprises the following components in percentage by weight: 58%-63% of viscose, 25%-30% of acrylic fibers, 3%-5% of wool and 7%-9% of spandex. According to the fabric, a laza bead pattern weave structure is combined with viscose, acrylic fibers, wool and spandex in a specific proportion. The viscose is responsible for moisture absorption and heating; the acrylic fiber and the pearl flower structure cooperate to lock heat; the skin-friendly performance is improved by the wool; spandex provides excellent elasticity and morphological stability, and finally good balance is achieved on moisture absorption, heating, warm keeping and wearing comfort.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and more specifically, to a moisture-absorbing and heat-generating single-sided weft-knitted fabric, its preparation method, and its uses. Background Technology

[0002] In the textile technology field, with the improvement of people's living standards and the increasing variety of outdoor activities, the functional requirements for clothing fabrics are becoming increasingly stringent. Warmth retention, as a key indicator of winter fabrics, has always been a focus of industry research and development. Traditional warm fabrics mainly rely on increasing thickness and using high-density or high-porosity fabric structures to reduce the thermal conductivity and achieve the purpose of insulating cold air. However, these fabrics generally suffer from the drawback of being bulky, greatly restricting the flexibility of human movement, and their warmth retention effect is often unsatisfactory.

[0003] To balance warmth and dryness, moisture-wicking and heat-generating fabrics have emerged. Their working principle is based on the moisture-absorbing properties of specific fibers. The fibers interact with human sweat to generate heat, thus meeting the body's needs for thermal and moisture-retaining comfort in clothing. Existing moisture-wicking and heat-generating products primarily achieve this through two aspects: raw material selection and fabric structure design. For example, some products use single-function special chemical fibers such as Porel, Softwarm, EKS, or Warmsensor fibers, combined with a napped layer, connecting layer, and outer layer yarn weaving structure, or employ a differential wicking fabric structure formed by inner, middle, and outer layers, to achieve moisture-wicking, heat-generating, quick-drying, and warming effects.

[0004] Despite some progress in existing moisture-wicking and heat-generating fabrics, many problems remain to be solved. During the moisture-wicking and heat-generating process, the uniformity and stability of the fabric surface temperature rise in many fabrics are poor, with a significant difference between the maximum temperature rise and the average temperature rise over 30 minutes. The preparation of some fabrics requires the addition of specific chemical reagents to achieve the heat-generating function, which not only presents problems of complex operation and high cost, but also leaves room for improvement in terms of heat-generating effect and durability. Furthermore, in terms of fiber composition, existing technologies mostly focus on blends of single functional chemical fibers or conventional natural fibers. There are still significant shortcomings in how to utilize the complementary advantages of different types of fibers to synergistically improve moisture-wicking and heat-generating efficiency, warmth retention, and wearing comfort.

[0005] In addition, there is a fabric weave structure in the textile industry called "Latex beadwork," which has certain applications in clothing fabrics due to its unique textured appearance and good elasticity. However, existing Latex beadwork fabrics mostly use conventional fibers such as ordinary polyester and cotton. These fibers themselves lack efficient moisture absorption and heat generation capabilities, causing these fabrics to be unable to effectively maintain body heat in cold environments, resulting in inherent shortcomings in their functional development. Therefore, the industry still faces many deficiencies in how to improve the overall thermal and moisture comfort of fabrics, the stability and durability of their heat generation performance, and how to balance fabric functionality and aesthetic features.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a moisture-absorbing and heat-generating single-sided weft-knitted fabric, its preparation method, and its uses. The moisture-absorbing and heat-generating single-sided weft-knitted fabric combines a spandex beaded structure with a specific ratio of viscose, acrylic, wool, and spandex. Through viscose's moisture absorption and heat generation, acrylic's synergistic structure for heat locking, wool's skin-friendly properties, and spandex's elasticity, a good balance of moisture absorption and heat generation, warmth, and comfort is achieved.

[0008] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted: In a first aspect, the present invention provides a moisture-absorbing and heat-generating single-sided weft-knitted fabric, wherein the moisture-absorbing and heat-generating single-sided weft-knitted fabric has a strut beaded weave structure. The moisture-absorbing and heat-generating single-sided weft-knitted fabric comprises, by weight percentage: 58%~63% viscose, 25%~30% acrylic, 3%~5% wool, and 7%~9% spandex.

[0009] In an optional embodiment, the fabric is woven from a first yarn and a second yarn; Preferably, the first yarn is a blended yarn comprising the viscose, the acrylic fiber, and the wool; Preferably, the second yarn is a spandex filament containing the spandex.

[0010] In an optional embodiment, the first yarn is a compact Sirospun yarn; and / or, The first yarn is a 40S compact Siro-spun yarn; and / or, The first yarn is composed of: 65% viscose, 30% acrylic, and 5% wool by weight percentage; and / or, The second yarn is 30D spandex filament.

[0011] In an optional embodiment, the lattice beaded weave structure is formed by a weaving method using spandex in each loop; wherein each loop of the moisture-absorbing and heat-generating single-sided weft-knitted fabric contains spandex filaments.

[0012] In an optional embodiment, at least one surface of the moisture-absorbing and heat-generating single-sided weft-knitted fabric has a short pile layer; Preferably, the pile length of the short pile layer is 0.4mm to 0.7mm; Preferably, the pile density of the short pile layer is 280 fibers / mm. 2 ~330 roots / mm 2 .

[0013] In an optional embodiment, the adhesive is a ductile adhesive with an irregular groove structure in the transverse direction; and / or, The acrylic fiber is a high-bulk acrylic fiber; and / or, The height of the beads in the braided beadwork structure is 2.5mm~3.0mm; and / or, The diameter of the beads in the braided beadwork structure is 4.5mm~5.0mm; and / or, The warp density of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is 82~86 warp rows / inch; and / or, The weft density of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is 56-61 rows / inch; and / or, The moisture-absorbing and heat-generating single-sided weft-knitted fabric has a maximum temperature rise of ≥8℃; and / or, The average 30-minute temperature rise of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥5.2℃; and / or, The weft elastic recovery rate of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥88%; and / or, The warp elastic recovery rate of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥92%.

[0014] Secondly, the present invention provides a method for preparing a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments, comprising: Using a feeding mode that combines yarn and spandex, the first and second yarns are fed into a single-sided circular knitting machine simultaneously to weave a fabric with a spandex beadwork structure. The fabric is subjected to a series of processes, including setting, dyeing, cutting and ironing, and shaping, to obtain the moisture-absorbing and heat-generating single-sided weft-knitted fabric.

[0015] In an optional embodiment, the single-jersey circular knitting machine is a 34-inch 24G single-jersey circular knitting machine; and / or, The feed tension of the first yarn is controlled at 12cN~14cN; and / or, The feed tension of the second yarn is controlled at 7cN~9cN; and / or, The machine speed is controlled at 20 revolutions per minute; and / or, The syringe temperature is controlled between 25℃ and 28℃; and / or, The temperature for the preform treatment is 115℃~120℃; and / or, the temperature for the shaping treatment is 135℃~140℃; and / or, In the dyeing process, a mixed dye system of reactive dyes, disperse dyes, and acid dyes is used; and / or, the maximum temperature of the dyeing process is controlled at 110℃~115℃; and / or, the dyeing bath ratio is 1:12~1:14; and / or, In the described grabbing, shearing, and ironing process, the grabbing roller speed in the grabbing process is 750 r / min to 900 r / min; and / or, the shearing blade speed in the shearing process is 1100 r / min to 1300 r / min; and / or, the ironing temperature in the ironing process is 125℃ to 130℃; and / or, The shaping process also includes applying nonionic softener and spandex elastic stabilizer by padding.

[0016] Thirdly, the present invention provides a textile, comprising a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments.

[0017] Fourthly, the present invention provides a use for a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments, the use being to prepare clothing with moisture-absorbing, heat-generating, and heat-retaining functions.

[0018] This invention provides a moisture-wicking and heat-generating single-sided weft-knitted fabric, its preparation method, and its applications. Compared with existing technologies, this moisture-wicking and heat-generating single-sided weft-knitted fabric achieves a synergy between functionality and comfort by combining a specific strut-beaded weave structure with a precise multi-component fiber ratio. Its strut-beaded weave structure not only provides a unique textured appearance but also creates a certain air layer. This structure, combined with functional fibers, overcomes the deficiency in warmth retention caused by improper fiber selection in traditional strut-beaded fabrics.

[0019] The high viscose content (58%-63%) in this fabric performs the core moisture-wicking and heat-generating function, quickly absorbing moisture and converting it into heat. Meanwhile, the acrylic component (25%-30%), with its high loft, assists the beaded structure in creating a stable, closed air layer, effectively locking in the generated heat and significantly enhancing its warmth retention. A small amount of wool (3%-5%) balances natural heat generation with skin-friendliness, further improving thermal and moisture comfort.

[0020] Furthermore, the 7%-9% spandex component in the fabric gives this strut beaded fabric excellent omnidirectional elasticity and elastic recovery rate. This not only ensures flexibility and close-fitting comfort but also provides the necessary elastic support for the morphological stability of the beaded structure.

[0021] In summary, this fabric effectively utilizes the complementary advantages of different fibers and deeply integrates fiber function with the fabric structure, achieving a good balance in terms of moisture absorption and heat generation efficiency, long-lasting warmth retention, and wearing comfort. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic flowchart illustrating the preparation method of the moisture-absorbing and heat-generating single-sided weft-knitted fabric in the embodiments of this application. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of the invention. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer are followed. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0025] This application provides a moisture-absorbing and heat-generating single-sided weft-knitted fabric, which has a strut beaded weave structure.

[0026] The moisture-absorbing and heat-generating single-sided weft-knitted fabric comprises, by weight percentage: 58% to 63% viscose (e.g., 58%, 59%, 60%, 61%, 62%, 63%, etc.), 25% to 30% acrylic fiber (e.g., 25%, 26%, 27%, 28%, 29%, 30%, etc.), 3% to 5% wool (e.g., 3%, 4%, 5%, etc.), and 7% to 9% spandex (e.g., 7%, 8%, 9%, etc.).

[0027] The fabric provided in this application embodiment, more specifically, is a single-sided weft-knitted fabric, a textile material formed on a single set of needles through a weft knitting process. This fabric is defined by the functional term "moisture-absorbing and heat-generating." This indicates that the fabric possesses an inherent property of being able to release heat through physical or chemical processes during the absorption of moisture (such as human sweat or ambient humidity), thereby increasing the fabric's own temperature.

[0028] The fabric features a key structural characteristic: "stretch bead weave structure".

[0029] The aforementioned "piqué" is a knitted weave characterized by a textured surface resembling a honeycomb or granules. This three-dimensional structure itself helps to create tiny air layers within the fabric.

[0030] The term "stretcher" refers to the addition of elastic yarn (usually spandex) during the weaving process.

[0031] Therefore, "stretcher beadwork structure" refers to a knitted structure containing elastic yarns and exhibiting a three-dimensional texture.

[0032] This fabric is a mixture of four specific components in defined weight percentages: viscose (58%–63%) is the primary component. Viscose is a regenerated cellulose fiber with the same basic chemical composition as cotton, but with extremely high moisture absorption. Acrylic (25%–30%) is a secondary component. Acrylic is a synthetic fiber that typically has high bulk, is lightweight, and has a wool-like warm feel, and it helps to trap air. Wool (3%–5%) is a secondary functional component. Wool is a natural protein fiber that also has moisture-wicking and heat-generating capabilities, as well as good warmth retention and a natural skin-friendly feel. Spandex (7%–9%) is a key functional component. Spandex is a highly elastic synthetic fiber. The 7%–9% content is a relatively high percentage, ensuring the fabric has significant elasticity and resilience, corresponding to the characteristics of a "stretch" structure.

[0033] The fabric achieves its function and effect through the synergistic effect of its structure and components. Firstly, its moisture-wicking and heat-generating principle primarily relies on the high content of viscose (58%-63%) and wool (3%-5%). Both fibers are highly hygroscopic, containing hydrophilic groups in their molecular structure. When they absorb moisture, water molecules combine with fiber molecules and release "adsorption heat," which is the direct cause of the fabric's warming effect. Secondly, its warmth-retaining and heat-locking principles mainly depend on the acrylic fiber component and the beaded weave structure. 25%-30% acrylic provides a fluffy base, while the three-dimensional textured structure of the beaded weave creates numerous tiny air pockets. Since air is a poor conductor of heat, these static air layers locked within the fabric structure effectively prevent heat loss, thus retaining the heat generated by the viscose and wool, as well as the body's own heat, achieving warmth. Furthermore, its elasticity and comfort primarily depend on the 7%-9% spandex component. The high spandex content gives the fabric excellent elasticity and shape recovery, ensuring that the fabric can conform to the body's curves and does not create a feeling of restriction during exercise, while also ensuring the stability of the beaded structure.

[0034] This fabric achieves a good balance across multiple performance dimensions by combining four specific components (viscose, acrylic, wool, and spandex) with a specific spandex beadwork structure. It doesn't rely on a single fiber, but rather utilizes viscose's strong moisture absorption and heat generation, acrylic's fluffy warmth, wool's natural auxiliary heat generation and skin-friendly properties, and spandex's elasticity. This allows multiple functional characteristics (moisture absorption and heat generation, warmth, and elasticity) to coexist and mutually reinforce each other within a single fabric. The 7%-9% spandex content ensures significant stretch recovery, a key advantage for clothing requiring flexibility (such as underwear or sportswear). The "moisture absorption and heat generation" and "heat retention" mechanisms work simultaneously. Viscose and wool are responsible for "heat generation," while acrylic and the beadwork structure are responsible for "heat retention," making the warmth more efficient and lasting. The high proportion of viscose and natural wool, combined with the three-dimensional breathability of the beadwork structure, gives the fabric warmth while also providing a soft feel and skin-friendly texture.

[0035] In some embodiments, the fabric is made of a first yarn and a second yarn interwoven together.

[0036] In an optional embodiment, the first yarn is a blended yarn comprising the viscose, the acrylic fiber, and the wool.

[0037] In an optional embodiment, the second yarn is a spandex filament containing the spandex.

[0038] The aforementioned single-sided weft-knitted fabric, which has a strut weft structure, a specific four-component content, and moisture-absorbing and heat-generating functions, is not composed of random fibers, but rather of at least two distinct yarns: a "first yarn" and a "second yarn," formed by interlacing (in this case, weft knitting).

[0039] These four chemical components (viscose, acrylic, wool, and spandex) are distributed into two types of yarn: (1) First yarn: is defined as a blended yarn. This means that the three components of the fabric—viscose, acrylic, and wool—are pre-mixed during the spinning process to form a single, multifunctional yarn. This yarn carries the main body of the fabric as well as the functions of moisture absorption, heat generation, and warmth retention.

[0040] (2) Second yarn: is defined as a type of spandex yarn. This means that 7%-9% of the spandex component in the fabric exists as an independent yarn, separate from the first yarn (blended yarn).

[0041] The principle lies in separating the functions before weaving. It defines an engineered manufacturing method: clearly separating the "core and thermal functions" (viscose, acrylic, wool) and "elastic functions" (spandex) of the fabric at the raw material stage.

[0042] In actual production, weaving equipment (such as a single-jersey circular knitting machine) feeds in both the "first yarn" (blended yarn) and the "second yarn" (spandex filament) simultaneously. By weaving the spandex filament (second yarn) together with the blended yarn (first yarn) in a specific manner (e.g., "leuco plus spandex"), the elasticity is systematically and evenly implanted into the fabric structure.

[0043] This approach, which confines the fabric construction to the interweaving of two specific yarns, yields key benefits: it achieves a "stretch" structure, which is created by weaving an independent elastic yarn (the second yarn) together with the main yarn (the first yarn); and it ensures controllable and uniform elasticity: by using independent spandex yarn (the second yarn) and controlling its feeding method, the distribution of the fabric's 7%-9% spandex content can be precisely controlled, ensuring that the fabric achieves uniform, stable, and designable omnidirectional elasticity and shape recovery. Furthermore, it guarantees the performance of the main functions; by pre-forming viscose, acrylic, and wool into a blended yarn (the first yarn), it ensures the uniform mixing of these three functional fibers, providing a foundation for the fabric to achieve stable moisture absorption, heat generation, and warmth retention properties.

[0044] In some embodiments, the first yarn is a compact Sirospun yarn.

[0045] This embodiment defines the manufacturing process of the "first yarn". "Compact Sirospun" is a spinning technique. Yarns prepared using this process have a compact structure, and their most significant advantage is extremely low surface hairiness (hairiness index ≤ 1.5 yarns / m), which is 60% less than that of ordinary ring-spun yarn. This results in higher yarn strength (300-320 cN), better uniformity, reduced yarn breakage during subsequent weaving, and a smoother and more even surface on the final fabric.

[0046] In some embodiments, the first yarn is a 40S compact Sirospun yarn.

[0047] This further limits the fineness of the "first yarn" based on the existing process. "S" refers to English count, and 40S is a commonly used yarn fineness specification in the industry. The higher the number, the finer the yarn.

[0048] In some embodiments, the first yarn is composed of 65% viscose, 30% acrylic and 5% wool by weight percentage.

[0049] The specific proportions mentioned above are the core foundation for achieving the fabric's functions. In the 65% viscose, the viscose specifically refers to "U-Kex viscose," whose fibers have an irregular grooved structure in the transverse direction. This increases its moisture absorption rate by 15%-20% compared to ordinary viscose, enabling the fabric's core "moisture absorption and heat generation" function. In the aforementioned 30% acrylic fiber, the acrylic fiber specifically refers to "high-loft" acrylic fiber, which has a high loft (25-28cm). 3 / g), which can create a closed air layer between fibers to lock in heat, thereby "enhancing warmth". The 5% wool mentioned above specifically refers to 80S fine wool, which itself has a moisture absorption rate of 15%-18%, which can help "naturally generate heat" while providing "skin-friendly" properties.

[0050] Through this pre-composite blending, the "first yarn" simultaneously possesses the dual functions of "moisture absorption and heat generation" (derived from viscose and wool) and "heat locking and insulation" (derived from acrylic fiber).

[0051] In some embodiments, the second yarn is 30D spandex filament.

[0052] This embodiment defines the fineness of the "second yarn" (i.e., elastic yarn). "D" stands for Denier, a unit of fineness for chemical fibers, and 30D is a specific specification.

[0053] The 30D spandex yarn was chosen because of its excellent physical properties, including extremely high elongation at break (≥750%) and elastic recovery (≥96%). It also exhibits good thermal stability (shrinkage ≤5% after 120℃×30min test), ensuring it maintains its elasticity and avoids elasticity fluctuations during subsequent high-temperature dyeing and finishing processes.

[0054] In this embodiment, by precisely defining the process, fineness, and raw material composition of the two yarns, a controllable and high-quality raw material foundation is provided for the performance of the final fabric. This ensures that the "first yarn" achieves optimal performance both functionally (moisture absorption and heat generation combined with warmth retention) and physically (high strength and low fuzziness), while ensuring that the "second yarn" provides stable and durable high elasticity.

[0055] In some embodiments, the lattice beaded weave structure is formed by a weaving method using spandex in each loop; wherein each loop of the moisture-absorbing and heat-generating single-sided weft-knitted fabric contains spandex filaments.

[0056] In weft knitting, a "road" (or course) refers to the horizontal loop formed by the needles knitting one round. "Road plus spandex" means that spandex yarn is fed synchronously into each road during the knitting process. In contrast, other knitting methods (such as "alternating road") skip certain roads without feeding spandex yarn.

[0057] In this embodiment, the structural feature is that the 7%-9% spandex component in the final fabric is continuously and evenly distributed in each row of loops without any interruption.

[0058] The principle defined by this description is that, through a specific feeding pattern of "spandex plus interlacing," the spandex yarn (accounting for 7%-9% of the total weight), which serves as the elastic component, is synchronously interlaced with the yarn (including viscose, acrylic, and wool), which serves as the main functional component, in every thread. This forms a continuous, complete, and uniform elastic support network within the fabric's base. This network is tightly integrated with the beadwork structure (from the first paragraph) to ensure that the elastic yarn is evenly distributed throughout the entire fabric, rather than existing only in certain areas.

[0059] The beneficial effects of this "spandex-plus-loop" weaving method are: achieving high and uniform elasticity, as the spandex yarn (from the 7%-9% component described in the first paragraph) is evenly distributed in each loop row, the fabric achieves uniform elastic recovery in all directions (i.e., "omnidirectional elasticity"). This avoids the problem of uneven fabric elasticity or localized deformation that may occur due to skipping loops; and enhancing the stability of the structure, as this continuous elastic network provides stable elastic support for the "beaded weave structure" mentioned in the first paragraph. It helps the texture of the beaded pattern to quickly return to its original shape after stretching, maintaining the fabric's shape stability and aesthetics; in addition, it enables stable weaving of high spandex content, a key process for achieving the relatively high spandex content of 7%-9% described in the first paragraph. By feeding the yarn synchronously in each loop, the tension of the spandex yarn can be precisely controlled, ensuring that a high proportion of spandex yarn can be stably combined with the ground yarn, thereby achieving a synergy of "high elasticity and strong function".

[0060] In some embodiments, at least one surface of the moisture-absorbing and heat-generating single-sided weft-knitted fabric has a short pile layer.

[0061] The phrase "at least one surface has a short pile layer" indicates that the fabric surface is not smooth, but rather treated with a specific finishing process (such as fleece or shearing). During this process, some fibers in the base yarn of the fabric are pulled out, forming a uniform and dense pile layer on the fabric surface.

[0062] In an optional embodiment, the pile length of the short pile layer is 0.4mm to 0.7mm. For example, it can be 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc.

[0063] In an optional embodiment, the pile density of the short pile layer is 280 fibers / mm. 2 ~330 roots / mm 2 For example, it can be 280 threads / mm. 2 , 290 roots / mm 2 ,300 roots / mm 2 ,310 roots / mm 2 ,320 roots / mm 2 ,330 roots / mm 2 etc.

[0064] The aforementioned "short pile layer" can be formed through the "scratching, shearing, and ironing" steps in the dyeing and finishing process. Scratching (forming pile) can be done using scraping equipment (such as a double-roller scraper), where the scraping rollers rotate at a certain speed (e.g., 750-900 r / min) to pull out fibers from the fabric base (mainly from the first yarn), forming pile on the surface. Shearing (limiting length) can be done using a precision shearing machine to trim the scraped pile to a uniform, predetermined height, resulting in a uniform short pile layer of "0.4mm~0.7mm". Ironing (setting): Finally, ironing is used to set the pile, making it firm and giving it a soft luster.

[0065] This practice of adding a short pile layer to the fabric surface primarily brings the following benefits: improved feel and comfort; the primary purpose of this short pile layer is to "optimize texture" and "enhance feel." The short, dense pile layer of 0.4-0.7mm gives the fabric surface a uniform and delicate texture, making it softer and more skin-friendly when in contact with the skin; enhanced visual texture; this process also helps to "enhance the three-dimensionality of beadwork." By forming short pile on the base of the beadwork structure, while avoiding raised areas, the texture of the fabric (from the beadwork structure described in the first paragraph) can be made more visually contrasting. It also helps to improve warmth; this dense short pile layer (density 280-330 fibers / mm²) contributes to improved warmth. 2 This process can trap an additional layer of tiny, still air on the fabric surface, further enhancing its warmth retention. It also improves surface luster; subsequent heat treatment can shape the pile and give it a "soft sheen," improving the fabric's overall appearance.

[0066] In some embodiments, the adhesive is a ductile adhesive with an irregular groove structure in the transverse direction.

[0067] In this embodiment, 58%-63% of the viscose component is specified as a specific type of viscose with an "irregular groove" fiber morphology. This irregular groove structure improves the moisture absorption rate of the fiber, making it 15%-20% faster than ordinary viscose. This faster moisture absorption efficiency lays the foundation for the fabric's core "moisture absorption and heat generation" function.

[0068] In some embodiments, the acrylic fiber is a high-loft acrylic fiber.

[0069] In this embodiment, 25%-30% of the acrylic fiber component is specified to be of the high-loft type (loft of 25-28cm). 3 / g). The principle behind high loft lies in the ability to form more "closed air layers" between the fibers. Since air is a poor conductor of heat, these air layers act as insulation, and their beneficial effect is "enhanced warmth retention," locking in the heat generated by moisture absorption.

[0070] In some embodiments, the height of the beads in the strut bead structure is 2.5mm to 3.0mm. For example, it can be 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, etc.

[0071] In some embodiments, the diameter of the beads in the strut bead structure is 4.5mm to 5.0mm. For example, it can be 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5.0mm, etc.

[0072] In some embodiments, the warp density of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is 82-86 warp rows per inch.

[0073] In some embodiments, the weft density of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is 56-61 rows / inch.

[0074] This section specifies the exact geometric dimensions and physical density of the fabric for the "pigmented weave structure" described in the first paragraph. Specifically, the bead height (2.5mm~3.0mm) and bead diameter (4.5mm~5.0mm) define the precise physical dimensions of the raised and recessed texture of the beaded structure.

[0075] These dimensions are achieved through a specific "triangular trajectory design." The beneficial effect is that it ensures clear beadwork loop formation, resulting in a fabric appearance with a specific three-dimensional feel and air-retaining capacity.

[0076] The aforementioned warp density (82~86 warp rows / inch) and weft density (56~61 weft rows / inch) define the yarn arrangement density of the fabric per unit length.

[0077] These density parameters are a direct result of weaving techniques (such as 24G stitch pitch and tensile tension). Their beneficial effect is ensuring a uniform and stable fabric structure and guaranteeing a bead formation rate (≥99%). In some embodiments, the maximum temperature rise of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥8°C.

[0078] In some embodiments, the average 30-minute temperature rise of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥5.2℃.

[0079] The aforementioned characteristics are functional limitations, specifying the minimum standards that the finished fabric must meet in terms of moisture absorption and heat generation performance and elasticity. Specifically, the maximum temperature rise during moisture absorption and heat generation must be ≥8℃ and the average temperature rise over 30 minutes must be ≥5.2℃. This limits the maximum temperature rise the fabric can achieve when absorbing moisture and the average temperature rise over 30 minutes under standard testing conditions. These values ​​are the final result of the synergistic effect of fabric components (such as PVC viscose) and structure (such as high-loft acrylic). Its beneficial effect is providing an "ultra-high moisture absorption and heat generation temperature rise value of 8℃," which far exceeds existing standards (≥4℃ and ≥3℃), indicating high and sustained heat generation efficiency.

[0080] In some embodiments, the weft elastic recovery rate of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥88%.

[0081] In some embodiments, the warp elastic recovery rate of the moisture-absorbing and heat-generating single-sided weft-knitted fabric is ≥92%.

[0082] This embodiment defines the fabric's ability to recover to its original size after being stretched in both the warp (longitudinal) and weft (transverse) directions. This high recovery rate is a result of the combined effect of the 7%-9% high spandex content and specific weaving techniques described in the first paragraph. The beneficial effect is ensuring the fabric has "high elasticity" and excellent dimensional stability, making the garment less prone to deformation and providing a comfortable, close-fitting fit.

[0083] refer to Figure 1 In this application embodiment, a method for preparing a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments is also provided, comprising: Step S1: Using the feeding mode of adding spandex to the yarn, the first yarn and the second yarn are fed into the single-sided circular knitting machine simultaneously to weave a greige fabric with a spandex bead weave structure.

[0084] This step describes the fabric forming process. It shows how to use specific machines and processes to create an initial fabric (called "grey fabric") from two different raw material yarns (i.e., the first yarn and the second yarn as defined above).

[0085] The equipment can include a "single-sided circular knitting machine".

[0086] The raw materials are "first yarn" (i.e., a blended yarn containing viscose, acrylic, and wool) and "second yarn" (i.e., spandex filament) as input raw materials.

[0087] One option for the feeding mode is the "all-in-one with spandex" feeding mode. This means that in every row of the knitting machine (i.e., every horizontal row being knitted), the first and second yarns are fed in "synchronously" (i.e., at the same time), without any interval between rows.

[0088] The above steps yield an undyed raw "grey fabric" with a "spangled beadwork structure".

[0089] The aforementioned "spandex plus yarn" pattern ensures that the second yarn (spandex filament) can be continuously and evenly distributed in every row of the fabric. This provides uniform omnidirectional elasticity to the greige fabric and provides a stable technological basis for achieving a 7%-9% spandex content.

[0090] Specifically, this step can be achieved through precise parameter control, and may include, for example: Equipment specifications: A 34-inch, 24G (needle gauge) single-sided circular knitting machine can be selected.

[0091] (1) Triangle design: adopts "double-section high beaded triangle". The upper triangle controls the first yarn to form raised beaded loops (e.g., height 2.5-3.0mm, diameter 4.5-5.0mm), and the lower triangle controls the second yarn (spandex) to form an elastic support network at the bottom of the beaded loop.

[0092] (2) Tension control: To ensure synchronous feeding, the yarn tension needs to be precisely controlled. For example, the first yarn is controlled at 12-14 cN and the second yarn is controlled at 7-9 cN.

[0093] (3) Environmental control: The machine speed can be set to 20 revolutions per minute, and the syringe temperature should be kept constant at 25-28℃ to avoid the spandex yarn shrinking due to heat and causing elastic fluctuations.

[0094] Step S2 involves sequentially performing pre-fabricating treatment, dyeing treatment, shearing and ironing treatment, and shaping treatment on the greige fabric to obtain the moisture-absorbing and heat-generating single-sided weft-knitted fabric.

[0095] This step is a post-processing procedure consisting of four sub-steps, and these four steps can be performed "in sequence" (i.e., in order).

[0096] (1) Pre-setting treatment: This is the first heat setting of the greige fabric, which is carried out before dyeing and is also called "pre-setting". Specifically, the greige fabric is passed through a hot air setting machine at a specific temperature and tension. This results in the initial stabilization of the fabric's structure (especially spandex and beaded structures).

[0097] The purpose of this step is to "eliminate internal stress in the weaving process." It can fix the interweaving structure of the spandex and the ground yarn, and its most critical advantage is to "avoid fabric deformation caused by spandex shrinkage in subsequent processes (especially high-temperature and high-humidity dyeing)."

[0098] For example, a hot air preformer can be used, with the temperature controlled at 115-120℃ (a lower temperature optimized to protect the spandex), the machine speed controlled at 22-26m / min, and an overfeed rate of 4%-6% applied.

[0099] (2) Dyeing treatment: The step of dyeing the fabric. Specifically, the fabric after finishing can be placed in a dyeing vat and treated with dyes and chemical auxiliaries at a specific liquor ratio, temperature and time curve, so that the fabric can be dyed evenly and achieve a certain color fastness index.

[0100] This treatment aims to achieve uniform dyeing while protecting the elasticity of spandex and the moisture absorption properties of functional fibers (such as viscose) from high-temperature damage.

[0101] For example, since the first yarn is a blend of viscose, acrylic, and wool, a mixed dyeing system must be used: reactive dyes (for viscose), disperse dyes (for acrylic), and acid dyes (for wool). An auxiliary agent such as a spandex protectant (e.g., 1-2 g / L) can be added to prevent yellowing and loss of elasticity in the spandex. The process parameters can utilize a high-temperature, high-pressure overflow dyeing machine, with a slightly higher liquor ratio (1:12-1:14) to reduce fabric friction. The heating profile needs to be controlled in stages, for example, holding at 95℃ (for viscose / wool dyeing), then raising the temperature to 110-115℃ for holding (for acrylic dyeing). The maximum temperature should not be too high to protect the spandex.

[0102] (3) Pressing and shearing: This is a three-in-one mechanical finishing step used to change the surface texture of the fabric. Specifically, it may include: Fleece: Using a roller with needles (fleece roller) to pull out the fibers from the surface of the fabric to form a pile.

[0103] Shearing (pile shearing): Using a pile shearing machine to trim the pile of varying lengths to achieve a uniform height.

[0104] Ironing (fluffing): Using an electric heating roller to heat and shape the fluff of the fabric.

[0105] This step can create a uniform, delicate, and smooth "short pile layer" on the fabric surface.

[0106] The purpose of this step is to "optimize the texture" and "enhance the feel." The resulting short pile layer makes the fabric softer, while "enhancing the three-dimensionality of the beadwork" and giving the surface a "soft sheen."

[0107] For example, specific processes and parameters may include the following: Fleece application: Control the fleece roller speed (e.g., 750-900 r / min) and feed tension (30-40 N) to avoid overstretching the elastic fabric. Shearing: Control the shearing pressure (e.g., 0.2-0.3 MPa) and cutter spacing (e.g., 0.12 mm). Ironing: Control the ironing temperature at 125-130℃ (also a lower temperature to protect the spandex) and control the ironing roller pressure (0.25-0.35 MPa).

[0108] (4) Finishing treatment: This is the last step in the finishing process, also known as "post-finishing". Specifically, it may include: passing the fabric that has been cut and ironed through a hot air finishing machine again, and usually applying softeners and other functional additives at this time, so as to obtain the final "moisture-absorbing and heat-generating single-sided weft-knitted fabric" that is dimensionally stable, soft to the touch, and meets the functional standards.

[0109] This step serves multiple purposes, including "stabilizing (final) dimensions", "fixing the gripping and pressing effect", "optimizing the elasticity and fabric feel of 'Lulu+ Spandex'", and "locking in moisture-wicking and heat-generating functions".

[0110] For example, a hot air setting machine can be used to control the temperature at 135-140℃ (the final setting temperature to protect the spandex). In this step, a nonionic softener (2%-3% owf) and a spandex elastic stabilizer (0.5-1% owf) can be added by padding to ultimately optimize the fabric's performance and feel.

[0111] This application embodiment also provides a method for preparing a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in the foregoing embodiments, wherein the single-sided circular knitting machine is a 34-inch 24G single-sided circular knitting machine.

[0112] The "34 inches" mentioned above refers to the working width (diameter) of the needle cylinder. "24G" refers to the stitch length, which is the number of needles per inch on the needle cylinder, and it determines the density and fineness of the fabric.

[0113] The machine of this specific specification was selected to "adapt to the cross-linked spandex function" and to ensure that the equipment can support the "cross-linked spandex" synchronous feeding mode defined in the seventh paragraph.

[0114] In some embodiments, the feed tension of the first yarn is controlled at 12cN to 14cN. For example, it can be 12cN, 13cN, 14cN, etc.

[0115] In some embodiments, the feed tension of the second yarn is controlled at 7cN to 9cN. For example, it can be 7cN, 8cN, 9cN, etc.

[0116] During the weaving process, the tension (in centinewtons) of the two yarns is specifically defined when they are fed into the knitting needles. The first yarn (blended yarn) is maintained at a higher tension (12-14 cN), while the second yarn (spandex filament) is maintained at a lower tension (7-9 cN). The tension of the two yarns in each path can be independently and precisely controlled through the equipment's intelligent tension control system (such as electronic adjustment modules and tension sensors).

[0117] This precise tension difference control is key to achieving stable weaving. The aim is to ensure that the ground yarn and spandex yarn are fed in tandem and to avoid defects such as tension fluctuations causing bead deformation or exposed spandex.

[0118] In some implementations, the machine speed is controlled at 20 revolutions per minute.

[0119] The aforementioned characteristics limit the cylinder rotation speed of the circular knitting machine to 20 revolutions per minute. This speed is described as "1-2 revolutions per minute less than conventional feeding." The slightly slower speed is used to "ensure stable feeding of 'Lulu plus spandex'" and to guarantee the accuracy of the "synchronous feeding" process described in paragraph seven.

[0120] In some implementations, the syringe temperature is controlled between 25°C and 28°C. For example, it can be 25°C, 26°C, 27°C, 28°C, etc.

[0121] The above temperature refers to the operating temperature of the cylinder (i.e., the working area of ​​the knitting needles) during the weaving process. This temperature range can be maintained by the machine's built-in "cylinder temperature control system" (which includes heating and cooling modules). This parameter is a crucial protective measure. Its purpose is to "avoid thermal shrinkage of spandex" and "avoid overheating of the knitting needles and damaging the spandex," ensuring that the spandex yarn maintains stable elastic properties during the weaving process.

[0122] In some embodiments, the temperature of the preform treatment is 115°C to 120°C. For example, it can be 115°C, 116°C, 117°C, 118°C, 119°C, 120°C, etc.

[0123] This step specifies the heating temperature for the "pre-forming" (i.e., pre-shaping) step. This temperature is set at "5°C lower than usual." The lower temperature is used to prioritize "protecting the elasticity of the spandex" and prevent it from being damaged before subsequent processes, while simultaneously "eliminating internal weaving stress" and "fixing the interweaving structure of the spandex and ground yarn."

[0124] In some embodiments, the temperature of the shaping process is 135°C to 140°C. For example, it can be 135°C, 136°C, 137°C, 138°C, 139°C, 140°C, etc.

[0125] The aforementioned temperature was set at "5°C lower than usual". This optimized low temperature, used in the final stage of dyeing and finishing, is intended to "stabilize dimensions" and "fix the gripping, cutting, and pressing effect" while further "protecting the spandex", ensuring a high elasticity retention rate in the finished fabric.

[0126] In some embodiments, the dyeing process employs a mixed dye system of reactive dyes, disperse dyes, and acid dyes; and / or, the maximum temperature of the dyeing process is controlled at 110°C to 115°C (e.g., 110°C, 111°C, 112°C, 113°C, 114°C, 115°C, etc.); and / or, the dyeing bath ratio is 1:12 to 1:14 (e.g., 1:12, 1:13, 1:14, etc.).

[0127] The above characteristics refer to the chemical category of the dyes used in the "dyeing treatment". Since the first yarn of the fabric is a blend of three fibers with different chemical properties (viscose, acrylic, and wool), the corresponding dyes must be used to color all components.

[0128] Among them, reactive dyes are used to dye "Yocosil Viscose" (cellulose fiber). Disperse dyes are used to dye "Domestic Acrylic Fiber" (synthetic fiber). Acid dyes are used to dye "Wool" (protein fiber). This mixing system is a necessary method to achieve uniform dyeing of multi-component fiber blended fabrics.

[0129] The highest temperature during the dyeing process described above is controlled between 110℃ and 115℃, which limits the peak temperature that the dye bath can reach during the dyeing steps. This temperature is necessary for dyeing acrylic fibers (maintaining a temperature of 110-115℃), but it is also a control point. Limiting it to this range is to "avoid high-temperature damage to the elasticity of 'Lulu-Gas Spandex'", achieving a balance between ensuring the dyeing effect and protecting the elasticity of the spandex.

[0130] The dyeing liquor ratios of 1:12 to 1:14 define the ratio of fabric weight to dye liquor (water) volume during dyeing. For example, 1:12 means using 12 liters of dye liquor for 1 kilogram of fabric. This range is described as "increasing the liquor ratio." Using more water for dyeing has the advantage of "reducing friction between the fabric and the equipment," thereby "protecting the beadwork structure" from damage during tumbling.

[0131] In some embodiments, in the grabbing, shearing, and ironing process, the grabbing roller speed in the grabbing process is 750 r / min to 900 r / min (e.g., 750 r / min, 800 r / min, 850 r / min, 900 r / min, etc.); and / or, the shearing blade speed in the shearing process is 1100 r / min to 1300 r / min (e.g., 1100 r / min, 1200 r / min, 1300 r / min, etc.); and / or, the ironing temperature in the ironing process is 125℃ to 130℃ (e.g., 125℃, 126℃, 127℃, 128℃, 129℃, 130℃, etc.).

[0132] In the aforementioned grabbing, shearing, and ironing process, the grabbing roller speed of the grabbing process is limited to 750 r / min to 900 r / min, which defines the roller speed of the equipment (such as a double-roller grabbing machine) in the grabbing, shearing, and ironing process. For example, it can be set to 750 r / min for the front roller and 900 r / min for the rear roller. This speed is "50-100 r / min lower than the conventional speed." The reduced speed is to ensure that while pulling out the fibers to form a pile, tension control is used to "avoid fabric stretching" and ensure that "there is no significant loss of spandex elasticity."

[0133] The rotation speed of the shearing blade in the above-mentioned shearing process is 1100 r / min to 1300 r / min. This limits the rotation speed of the shearing blade in the "shearing" process of the "grip-shearing and pressing" step. This rotation speed, combined with other parameters (such as increased blade spacing and reduced pressure), aims to "reduce fabric compression" and "protect the spandex" while trimming the pile to a uniform length.

[0134] The hot-pressing temperature in the above-mentioned hot-pressing process is 125℃~130℃, which limits the surface temperature of the electric hot-pressing roller in the hot-pressing process of the "grab-shear-hot-press" step. This temperature is "5-10℃ lower than the conventional temperature". The use of a lower temperature again is to "protect the spandex", while achieving "firm pile shaping" and giving the surface a "soft luster".

[0135] In some embodiments, the shaping process further includes applying a nonionic softener and a spandex elastic stabilizer by padding.

[0136] Before entering the hot air setting machine, the fabric is treated with two auxiliaries by a "paddling" process (i.e., immersing it in an auxiliary solution and then rolling away excess liquid evenly with rollers).

[0137] The aforementioned "nonionic softeners" (such as Dow Corning DC-193) are used to optimize the final "hand feel" of the fabric. "Spandex elastic stabilizers" (such as Clariant ELASTO-FIX) are used to "optimize the elasticity of 'Luluga Spandex'", locking in and enhancing the fabric's elastic recovery performance.

[0138] This application also provides a textile product, including a moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments.

[0139] At least a portion of the aforementioned textiles are composed of fabrics with a specific composition (58%-63% viscose, 25%-30% acrylic, 3%-5% wool, 7%-9% spandex) and a spandex bead weave structure. Given that the core function of this fabric lies in its moisture-wicking and heat-generating properties (based on the principle that fibers absorb moisture, particularly interacting with human sweat to generate heat), high elasticity, and optional comfortable short pile layers, the term "textiles" as used herein primarily refers to products that utilize these properties and come into contact with the human body. This can include (but is not limited to) clothing requiring close contact, warmth, and elasticity, such as thermal underwear, bras, briefs, sports compression garments, or base layers; clothing accessories such as glove linings and thermal socks; and textile components such as elastic insulating layers for shoe linings or sports protective gear.

[0140] Furthermore, considering the passive thermal insulation properties, elasticity, or aesthetic appeal inherent in this fabric due to its acrylic composition and beaded structure, its applications can be envisioned to expand into other areas. For example, it could be used as an outdoor product lining (such as a sleeping bag liner); or as a textile component for products requiring thermal insulation, heat insulation, or elasticity, such as specific layers for furniture, equipment covers for use in cold regions, or protective cases for electronic devices.

[0141] This application also provides a use of the moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in any of the foregoing embodiments, the use being to prepare clothing with moisture-absorbing, heat-generating, and warmth-retaining functions.

[0142] The aforementioned use defines a specific application of the moisture-absorbing and heat-generating single-sided weft-knitted fabric (i.e., a fabric with specific components, a strut weave structure, and optionally specific performance indicators). The use is "to prepare clothing with moisture-absorbing, heat-generating, and heat-retaining functions." This means that the fabric is specifically designed for garment manufacturing, and the ultimate goal of this clothing is to achieve two core functions: first, "moisture absorption and heat generation," meaning the fabric can interact with moisture such as human sweat to generate heat; and second, "heat retention," meaning the fabric can effectively insulate against cold air and lock in heat. Therefore, this description closely links this high-performance fabric to its ultimate application in the field of functional clothing (i.e., addressing the thermal and moisture comfort requirements of clothing).

[0143] The present invention will be further illustrated below with specific embodiments. However, it should be understood that these embodiments are merely for the purpose of more detailed illustration and should not be construed as limiting the present invention in any way.

[0144] Example 1 In this embodiment, a fabric is prepared.

[0145] Experimental methods: (1) Raw material preparation: First yarn: 40S compact Sirospun blended yarn is selected. The composition of this yarn is: by weight percentage, 65% Yokoss viscose (which has an irregular groove structure in the transverse direction), 30% high-loft acrylic, and 5% 80S fine wool.

[0146] Second yarn: 30D spandex yarn is selected.

[0147] (2) The weaving process uses a 34-inch 24G single-sided circular knitting machine. The feeding mode of "Lulu plus spandex" is adopted to feed the first yarn and the second yarn simultaneously.

[0148] The process parameters are controlled as follows: The feed tension of the first yarn (40S blended yarn) is controlled at 13cN (the middle value between 12cN and 14cN).

[0149] The feeding tension of the second yarn (30D spandex filament) is controlled at 8cN.

[0150] The machine speed is controlled at 20 revolutions per minute.

[0151] The syringe temperature is kept constant at 26℃.

[0152] The fabric is woven into a greige fabric with a spandrel beaded weave structure, with the bead height being 2.8 mm and the bead diameter being 4.8 mm.

[0153] (3) Dyeing and finishing steps: The fabric is subjected to pre-setting treatment, dyeing treatment, cutting and ironing treatment and shaping treatment in sequence.

[0154] 1) Blank setting treatment: Use a hot air blank setting machine to control the temperature at 118℃ and the machine speed at 24m / min to eliminate internal stress during weaving.

[0155] 2) Dyeing treatment: A high-temperature, high-pressure overflow dyeing machine is used, with a dyeing liquor ratio of 1:13. A mixed dyeing system of reactive dyes (for viscose), disperse dyes (for acrylic), and acid dyes (for wool) is employed. 2 g / L of spandex protectant is added. The dyeing temperature rise curve is controlled in segments, with the maximum temperature maintained at 112℃ to protect the elasticity of the spandex.

[0156] 3) Cutting and ironing process: Fleece application: A double-roller fleece application machine is used, with the fleece roller speed controlled at 825 r / min, to form a pile on one side of the fabric.

[0157] Shearing: A precision shearing machine is used, with the shearing blade speed controlled at 1200r / min, to trim the pile evenly, so that the pile length of the short pile layer is 0.55mm.

[0158] Hot pressing: An electric hot pressing machine is used, and the hot pressing temperature is controlled at 128℃ to set the shape of the pile.

[0159] 4) Setting process: Use a hot air setting machine to control the setting temperature at 138℃.

[0160] The nonionic softener (2% owf) and spandex elastic stabilizer (1% owf) are applied by padding.

[0161] (4) The finished product is the moisture-absorbing and heat-generating single-sided weft-knitted fabric. Testing showed that its short pile layer has a pile density of 305 fibers / mm². 2 .

[0162] The final fabric composition (by weight percentage) is: 60.5% viscose, 27.5% acrylic, 4% wool, and 8% spandex.

[0163] Example 2 In this embodiment, a fabric is prepared.

[0164] Experimental method: basically the same as in Example 1, except that: Weaving steps: The initial yarn feeding tension is controlled at 12 cN.

[0165] The second yarn feeding tension is controlled at 7cN.

[0166] Dyeing and finishing steps: 1) Billet preparation: Temperature controlled at 115℃.

[0167] 2) Staining treatment: The maximum temperature is controlled at 110℃, and the liquor ratio is 1:12.

[0168] 3) Shearing and pressing treatment: The shearing roller speed is 750 r / min, the shearing knife speed is 1100 r / min, and the pressing temperature is 125℃. The pile length of the short pile layer is controlled at 0.4 mm.

[0169] 4) Shaping treatment: The shaping temperature is controlled at 135℃.

[0170] Finished product: The short pile layer fiber density was measured to be 280 fibers / mm. 2 The final fabric composition (by weight percentage) is: 61.4% viscose, 27.9% acrylic, 4.7% wool, and 7% spandex.

[0171] Example 3 In this embodiment, a fabric is prepared.

[0172] The experimental method is basically the same as that in Example 1, except that: Weaving steps: The initial yarn feeding tension is controlled at 14 cN.

[0173] The second yarn feeding tension is controlled at 9cN.

[0174] Dyeing and finishing steps: 1) Billet preparation: Temperature controlled at 120℃.

[0175] 2) Staining treatment: The maximum temperature is controlled at 115℃, and the liquor ratio is 1:14.

[0176] 3) Shearing and pressing treatment: The shearing roller speed is 900 r / min, the shearing knife speed is 1300 r / min, and the pressing temperature is 130℃. The pile length of the short pile layer is controlled at 0.7 mm.

[0177] 4) Shaping treatment: The shaping temperature is controlled at 140℃.

[0178] Finished product: The short pile layer fiber density was measured to be 330 fibers / mm. 2 The final fabric composition (by weight percentage) is: 59.15% viscose, 27.3% acrylic, 4.55% wool, and 9% spandex.

[0179] Example 4 In this embodiment, a fabric is prepared.

[0180] The experimental method is basically the same as that in Example 1, except that: Weaving steps: The cylinder temperature is kept constant at 25℃.

[0181] Example 5 In this embodiment, a fabric is prepared.

[0182] The experimental method is basically the same as that in Example 1, except that: Weaving steps: The cylinder temperature is kept constant at 28℃.

[0183] Example 6 In this embodiment, a fabric is prepared.

[0184] The experimental method is basically the same as that in Example 1, except that: Raw material preparation: First yarn: Replace with 40S ordinary ring-spun yarn (non-compact Siro-spun), the other components (65% Yokos viscose, 30% high-loft acrylic, 5% wool) remain unchanged.

[0185] Example 7 In this embodiment, a fabric is prepared.

[0186] The experimental method is basically the same as that in Example 1, except that: Raw material preparation: The composition of the first yarn (40S compact Sirospun) was changed to: 65% ordinary viscose (non-Yocos viscose), 30% high-loft acrylic fiber, and 5% wool.

[0187] Example 8 In this embodiment, a fabric is prepared.

[0188] The experimental method is basically the same as that in Example 1, except that: Dyeing and finishing steps: (3) the cutting and perming process was omitted.

[0189] That is, the greige fabric undergoes pre-setting, dyeing, and shaping processes in sequence.

[0190] Finished product: The surface of the obtained fabric does not have a short pile layer.

[0191] All other steps and parameters are the same as in Example 1.

[0192] Example 9 In this embodiment, a fabric is prepared to verify the boundary properties of the component range described in the claims.

[0193] The experimental method is basically the same as in Example 1, except that the raw material ratio was adjusted to achieve the edge value of the claim: Raw material preparation: First yarn: The composition is adjusted to 69.2% yogurt viscose, 27.5% high-loft acrylic, and 3.3% wool (Note: This ratio is the internal ratio of the first yarn, which is intended to adjust the final ratio in conjunction with spandex).

[0194] Second yarn: 30D spandex yarn is selected.

[0195] Weaving steps: Adjust the feed rate to precisely control the final fabric composition (by weight percentage) as follows: 63% viscose (upper limit), 25% acrylic (lower limit), 3% wool (lower limit), and 9% spandex (upper limit).

[0196] Finished product: The moisture-absorbing and heat-generating single-sided weft-knitted fabric is obtained.

[0197] Comparative Example 1 In this comparative example, a fabric was prepared.

[0198] Experimental method: basically the same as in Example 1, except that: Raw material preparation: First yarn: Replaced with 40S ordinary ring-spun yarn, its composition is: 65% ordinary polyester and 35% cotton. Second yarn: Same as in Example 1, using 30D spandex yarn.

[0199] Weaving steps: Same as in Example 1 (using "Lulu plus spandex" to achieve 8% spandex content).

[0200] Dyeing and finishing steps: The dye system is replaced with disperse dyes (for polyester) and reactive dyes (for cotton). Since it does not contain wool or high-loft acrylic fibers, and polyester is heat-resistant, conventional process temperatures are used (130℃ for setting, 130℃ for dyeing, and 150℃ for setting).

[0201] Comparative Example 2 In this comparative example, a fabric was prepared.

[0202] Experimental method: basically the same as in Example 1, except that: Weaving steps: The weaving structure is replaced with a regular plain weave instead of a beaded weave.

[0203] All other raw materials, components, and process parameters are the same as in Example 1.

[0204] Comparative Example 3 In this comparative example, a fabric was prepared.

[0205] Experimental method: basically the same as in Example 1, except that: By adjusting the blending ratio of the first yarn and the feeding parameters during weaving, the final product can be: The final fabric composition (by weight percentage) was adjusted to: 40% viscose, 50% acrylic, 5% wool, and 5% spandex.

[0206] All other steps and parameters are the same as in Example 1.

[0207] Comparative Example 4 In this comparative example, a fabric was prepared.

[0208] Experimental method: basically the same as in Example 1, except that: Weaving steps: The feeding mode is changed to the "spandex one-way-alternate-way" feeding mode (that is, the first way is to feed blended yarn + spandex filament, and the second way is to feed only blended yarn), instead of "every way plus spandex".

[0209] All other steps and parameters were the same as in Example 1, and the final spandex content was still controlled at 8%.

[0210] Comparative Example 5 In this comparative example, a fabric was prepared.

[0211] Experimental method: basically the same as in Example 1, except that: Dyeing and finishing steps: Use conventional high-temperature process parameters (as described in Comparative Example 1).

[0212] Preform preparation: Temperature controlled at 130℃.

[0213] Shaping treatment: The shaping temperature is controlled at 150℃.

[0214] All other steps and parameters are the same as in Example 1.

[0215] Comparative Example 6 In this comparative example, a fabric was prepared to verify the necessity of trace wool components.

[0216] The experimental method is basically the same as that in Example 1, except that: Raw material preparation: First yarn: Wool component removed. Composition adjusted to: 70% Yokosei viscose, 30% high-loft acrylic. (Viscose is used to fill in the wool gaps.) The final fabric composition (by weight percentage) is: 65.5% viscose, 27.5% acrylic, 0% wool, and 8% spandex.

[0217] All other steps and parameters are the same as in Example 1.

[0218] Test Experiment 1. Testing method: 1. Testing method: (1) Moisture absorption and heat generation performance test: The moisture absorption and heat generation temperature rise test method was adopted. The sample was placed in a standard temperature and humidity chamber for equilibration in a dry state, and then exposed to a high humidity environment simulating human sweating (e.g., temperature 20°C, humidity suddenly increased to 90%RH). The temperature change curve of the sample surface was recorded in real time using a temperature sensor. The highest temperature during the test was recorded as the "maximum temperature rise value of moisture absorption and heat generation", and the average temperature within 30 minutes after the start of the test was calculated as the "30-minute average temperature rise value of moisture absorption and heat generation".

[0219] (2) Elastic recovery rate test: The constant elongation method was used. Warp and weft strips were cut separately on a fabric tensile testing machine, with the clamping distance set. The strips were stretched to the specified elongation (50% elongation in this experiment), held for a certain time (e.g., 1 minute), and then the load was removed, allowing the samples to relax and recover for a certain time (e.g., 3 minutes). The residual deformation after recovery was measured, and the elastic recovery rate was calculated. A higher recovery rate indicates better fabric elasticity and shape retention.

[0220] (3) Component content test: A chemical dissolution quantitative analysis method was employed. Based on the chemical solubility characteristics of each fiber component (viscose, acrylic, wool, and spandex), specific chemical solvents were selected to dissolve the mixed fibers stepwise or selectively. The weight percentage of each fiber component in the fabric was calculated by weighing the dried mass before and after dissolution.

[0221] (4) Structural parameter testing: Using a fabric density microscope or a high-powered magnifying glass, determine the "warp density" and "weft density" by counting the number of warp rows and rows per unit length. Using a reading microscope or precision vernier calipers, measure the vertical height (bead height) and planar diameter (bead diameter) of the raised parts in the strut bead structure, as well as the average length of the surface pile of the fabric.

[0222] (5) Anti-pilling performance test: The circular trajectory pilling test method is used. The sample is mounted on the testing instrument and subjected to circular friction against an abrasive (such as a nylon brush or standard wool fabric) under specific pressure. After a specified number of friction revolutions, the sample is visually compared to a photograph under a standard light source for rating. The rating is divided into 1-5 levels, with level 5 representing no pilling and level 1 representing severe pilling.

[0223] (6) Water washing dimensional stability (shrinkage rate) test: Static immersion or simulated machine washing tests were used. Reference distances were marked on the warp and weft of the sample. After the sample underwent a standard washing and drying procedure, the reference distances were measured again. The shrinkage rate was calculated by determining the percentage change in dimensions before and after washing. Negative values ​​indicate dimensional shrinkage.

[0224] 2. Test Results: Table 1. Test Results

[0225] Table 2, Test Results 2

[0226] 3. Analysis: Based on the examples, comparative examples, and their test results (Tables 1 and 2), the following is a detailed analysis of the moisture-absorbing and heat-generating single-sided weft-knitted fabric and its preparation method.

[0227] The purpose of this test experiment is to verify the core technical concept of the present invention: that is, through the synergistic effect of "specific components (viscose / acrylic / wool / spandex) + specific structure (spandex beading + short pile) + specific process (compact sirospun + leuco plus spandex + low temperature dyeing and finishing), a balance of moisture absorption and heat generation, heat locking and warmth preservation, high elasticity and comfort and excellent durability can be achieved.

[0228] (1) The decisive role of fiber composition in "moisture absorption and heat generation performance": Analysis subjects: Examples 1-5, 9 vs. Comparative Example 1 vs. Comparative Example 3 vs. Example 7 vs. Comparative Example 6.

[0229] Examples 1-5 and 9 (components within the patent scope) showed a stable maximum temperature rise of 8.1°C to 8.6°C due to moisture absorption and heat generation. In contrast, Comparative Example 1 (polyester / cotton) showed only 1.5°C, and Comparative Example 3 (viscose content reduced to 40%) showed only 5.0°C. This demonstrates that a high viscose content of 58%-63% is key to achieving an instantaneous temperature rise above 8°C.

[0230] The highest temperature rise of Example 7 (ordinary adhesive) (6.5°C) was significantly lower than that of Example 1 (8.5°C), demonstrating that the irregular groove structure of "Ucos adhesive" makes a significant contribution to improving heating efficiency.

[0231] Although the maximum temperature rise (8.4°C) of Comparative Example 6 (without wool) did not change significantly (due to the replenishment of viscose content), its 30-minute average temperature rise decreased from 5.6°C in Example 1 to 5.0°C. This demonstrates that even with only 3%-5% wool added, its natural crimp and insulating properties still play an indispensable role in maintaining the long-term warmth of the fabric.

[0232] Example 9 used the boundary ratio of the claims (63% viscose and 3% wool), and its various performance indicators still remained excellent (maximum temperature rise of 8.1°C and average temperature rise of 5.3°C), proving that the numerical range defined by the claims is scientific and reliable.

[0233] (2) The influence of organizational structure on "heat retention and insulation performance": Analysis subjects: Example 1 vs. Comparative Example 2 vs. Example 8.

[0234] Example 1 (Lagerstätten beaded + short pile) had an average temperature rise of up to 5.6℃ over 30 minutes.

[0235] Comparative Example 2 (plain weave structure) showed an average temperature rise of 4.0℃ under the same composition. This strongly demonstrates that the "Lagerfeld weave structure" is a key means of achieving "heat retention" by creating a static air layer through the formation of concave and convex textures.

[0236] The average temperature rise of Example 8 (without short pile) dropped slightly to 5.0℃, indicating that the 0.4-0.7mm short pile layer played an auxiliary role in warmth preservation.

[0237] (3) The influence of weaving process and spandex content on "elastic properties": Analysis subjects: Example 1 vs. Comparative Example 4 vs. Comparative Example 3.

[0238] Even with a total spandex content of 8%, the warp and weft elastic recovery rate of Example 1 (with spandex added) (93% / 90%) was significantly better than that of Comparative Example 4 (with one side of the fabric alternating with the other, 86% / 82%). This demonstrates that the synchronous feeding mode of "with spandex added" can construct a denser and more uniform elastic network.

[0239] Comparative Example 3 reduced the spandex content to 5%, resulting in a significant decrease in elastic recovery rate, which demonstrates the necessity of limiting the spandex content to 7%-9% in this application.

[0240] (4) The contribution of dyeing and finishing processes to the balance between elasticity and dimensional stability: Analysis subjects: Example 1 vs. Comparative Example 5.

[0241] Comparative Example 5 used a conventional high-temperature process (setting temperature 150℃). Although its shrinkage rate was extremely small (-0.8%), the cost was that the elasticity of the spandex was severely damaged (the weft recovery rate dropped to 75%).

[0242] Example 1 of this application employs an optimized low-temperature dyeing and finishing process (setting temperature 138℃), which maximizes the preservation of spandex elasticity (90%) while ensuring a qualified shrinkage rate (-1.5%, within the ideal range). This demonstrates that the process parameters of this application have found the optimal balance between "dimensional stability" and "elasticity retention".

[0243] (5) Improvement of "durability (anti-pilling)" by yarn processing: Analysis objects: Example 1 vs. Example 6.

[0244] Example 1 uses "compact sirospun" yarn, which has a pilling resistance of level 4-5.

[0245] Example 6 uses ordinary ring-spun yarn, which has a pilling resistance of only level 3 and a slightly larger shrinkage rate (-2.5%).

[0246] This fully supports the preferred definition of the yarn preparation process in the claims and demonstrates the significant technical effect of compact sirospinning in reducing hairiness and improving the appearance and durability of fabrics.

[0247] In summary, the systematic comparative data from the embodiments and comparative examples fully demonstrate that the fabrics claimed in this invention can only achieve optimal overall performance when all technical characteristics (specific component ratios, eucalyptus / compact sirospun yarn, spandex beadwork structure, and low-temperature processing) are simultaneously satisfied. The absence or alteration of any key element will lead to a significant decrease in heat generation efficiency, warmth retention, elasticity, or durability.

[0248] 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.

Claims

1. A moisture-absorbing heat-generating single-sided weft-knitted fabric, characterized by comprising: The moisture-absorbing and heat-generating single-face weft-knitted fabric has a pull-frame pearl flower stitch structure; The moisture-absorbing and heat-generating single-face weft-knitted fabric contains, in percentage by weight, 58% to 63% viscose, 25% to 30% acrylic, 3% to 5% wool, and 7% to 9% spandex.

2. The heat-generating moisture-wicking single jersey weft-knitted fabric according to claim 1, characterized in that, The fabric is interwoven from first yarns and second yarns; Preferably, the first yarns are blended yarns containing the viscose, the acrylic, and the wool; Preferably, the second yarns are spandex filaments containing the spandex.

3. The heat-generating moisture-wicking single jersey weft-knitted fabric according to claim 2, characterized in that, The first yarns are compact Sirospun yarns; and / or, The first yarns are compact Sirospun yarns of 40S; and / or, The first yarns have a composition of, in percentage by weight, 65% viscose, 30% acrylic, and 5% wool; and / or, The second yarns are spandex filaments of 30D.

4. The heat-generating moisture-wicking single jersey weft-knitted fabric according to claim 1, wherein the heat-generating moisture-wicking single jersey weft-knitted fabric is characterized by, The pull-frame pearl flower stitch structure is formed by using Lycra spandex in the weaving mode; wherein each course of knitted loops of the moisture-absorbing and heat-generating single-face weft-knitted fabric contains spandex filaments.

5. The heat-generating moisture-wicking single jersey weft-knitted fabric according to claim 1, wherein the heat-generating moisture-wicking single jersey weft-knitted fabric is characterized by: At least one surface of the moisture-absorbing and heat-generating single-face weft-knitted fabric has a short pile layer; Preferably, the short pile layer has a pile length of 0.4mm to 0.7mm; Preferably, the short pile layer has a pile density of 280 hairs / mm 2 330 hairs / mm 2 .

6. The heat-generating moisture-wicking single jersey weft-knitted fabric according to claim 1, wherein the heat-generating moisture-wicking single jersey weft-knitted fabric is characterized by: The viscose is Oksil viscose, which has irregular groove structures in the transverse direction; and / or, The acrylic is high-loft acrylic; and / or, The pearl flower height of the pull-frame pearl flower stitch structure is 2.5mm to 3.0mm; and / or, The pearl flower diameter of the pull-frame pearl flower stitch structure is 4.5mm to 5.0mm; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a warp density of 82 to 86 wales / inch; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a weft density of 56 to 61 courses / inch; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a maximum moisture-absorbing and heat-generating temperature rise value of ≥8℃; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a 30min average moisture-absorbing and heat-generating temperature rise value of ≥5.2℃; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a weft elastic recovery rate of ≥88%; and / or, The moisture-absorbing and heat-generating single-face weft-knitted fabric has a warp elastic recovery rate of ≥92%.

7. A method of producing the moisture-absorbing heat-generating single-sided weft-knitted fabric according to any one of claims 1 to 6, characterized by, Comprising: The first yarns and the second yarns are synchronously fed into a single-face circular knitting machine in the feeding mode of Lycra spandex to be knitted into a grey fabric having a pull-frame pearl flower stitch structure; The grey fabric is sequentially subjected to setting treatment, dyeing treatment, grabbing, shearing, ironing treatment, and setting treatment to obtain the moisture-absorbing and heat-generating single-face weft-knitted fabric.

8. The method for preparing the moisture-absorbing and heat-generating single-sided weft-knitted fabric as described in claim 7, characterized in that, The single-face circular knitting machine is a 34-inch 24G single-face circular knitting machine; and / or, The feeding tension of the first yarns is controlled at 12cN to 14cN; and / or, The feeding tension of the second yarns is controlled at 7cN to 9cN; and / or, The machine speed is controlled at 20rpm; and / or, The needle cylinder temperature is controlled at 25℃ to 28℃; and / or, The temperature of the setting treatment is 115℃ to 120℃; and / or, the temperature of the setting treatment is 135℃ to 140℃; and / or, In the dyeing treatment step, a mixed dye system of reactive dyes, disperse dyes and acid dyes is used; and / or, the maximum temperature of the dyeing process is controlled at 110-115 DEG C; and / or, the dyeing bath ratio is 1:12-1:14; and / or, In the grabbing, cutting and ironing treatment step, the grabbing roller rotating speed in the grabbing process is 750-900 r / min; and / or, the cutting knife rotating speed in the cutting process is 1100-1300 r / min; and / or, the ironing temperature in the ironing process is 125-130 DEG C; and / or, In the setting treatment step, a non-ionic softener and spandex elastic stabilizer are applied by the padding method.

9. A textile, characterized in that, The moisture-absorbing and heat-generating single-side weft-knitted fabric comprises the moisture-absorbing and heat-generating single-side weft-knitted fabric according to any one of claims 1-5.

10. Use of the moisture-absorbing heat-generating single-weft knitted fabric according to any one of claims 1 to 6, characterized in that, The use is for preparing clothes with moisture-absorbing and heat-generating and warm-keeping functions.

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