Silent down feather jacket fabric

Abstract

The application discloses a mute down jacket fabric, which is formed by interweaving a first yarn and a second yarn; the first yarn has a first filament and a second filament, the Young's modulus of the first filament under dynamic modulus is 5-14 GPa, and the mass proportion of the first filament in the first yarn is greater than or equal to 70%; the single-fiber strength of the second filament is greater than that of the first filament; and the material of the second yarn has a Young's modulus of 12-20 GPa under dynamic modulus. The mute down jacket fabric is realized by adopting the first filament (such as regenerated cellulose fiber) with low modulus and high proportion, the second filament (such as polyester or nylon) with high strength is introduced to make up for insufficient strength, and the elastic second yarn with medium modulus is matched, so that the noise problem of traditional down jacket fabric is solved, the strength, elasticity and durability of the fabric are ensured, and the comprehensive performance is excellent.

Description

Technical Field

[0001] This invention relates to the field of textile fabric technology, specifically to a silent down jacket fabric. Background Technology

[0002] Traditional down jacket fabrics are mostly made of high-modulus synthetic fibers (such as polyester and nylon). During wear, due to inter-fiber friction and the high rigidity of the yarn, these fibers tend to produce a noticeable rustling sound, affecting comfort and user experience. This noise is particularly pronounced in quiet environments or situations requiring silence (such as libraries, conference rooms, and outdoor spaces at night). While some existing technologies attempt to reduce noise through coatings and finishing processes, these often come at the cost of sacrificing fabric breathability, moisture permeability, softness, or durability, and their effectiveness is limited. Summary of the Invention

[0003] The purpose of this invention is to provide a silent down jacket fabric that, through the design of specific fiber combinations, yarn structures and weaving processes, significantly reduces friction noise while maintaining the fabric's mechanical properties.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A silent down jacket fabric is formed by interlacing a first yarn and a second yarn; the first yarn contains a first filament and a second filament, the first filament having a Young's modulus of 5-14 GPa under dynamic modulus, and its mass proportion in the first yarn being greater than or equal to 70%; the single fiber strength of the second filament is greater than that of the first filament; the material of the second yarn has a Young's modulus of 12-20 GPa under dynamic modulus.

[0006] In one possible implementation, the denier factor of the first filament is 40-80D, and the denier factor of the second filament is 15-30D.

[0007] Or, the weight per square meter of the down jacket fabric is 120g or more;

[0008] Or, the first yarn is a warp yarn, the second yarn is a weft yarn, the warp density of the warp yarn is 150-220 yarns / in, and the weft density of the weft yarn is 70-100 yarns / in;

[0009] Or, the warp coverage factor of the silent down jacket fabric is 1800-2400, and the weft coverage factor is 500-800.

[0010] Alternatively, the fabric of the silent down jacket is plain weave.

[0011] In one possible implementation, the first filament is a regenerated cellulose filament, and the second yarn is an elastic yarn.

[0012] In one possible implementation, the first filament regenerated cellulose filament is cuprammonium fiber, rayon fiber, acetate fiber, or Tencel fiber.

[0013] In one possible implementation, the second filament is polyester or nylon.

[0014] In one possible implementation, the second yarn is a side-by-side bicomponent elastic yarn, spandex-covered yarn, spandex core-spun yarn, or spandex twisted yarn.

[0015] In one possible implementation, the cover factor of the low Young's modulus fibers in the silent down jacket fabric is 1500-2900.

[0016] In one possible implementation, the cover factor of the low Young's modulus elastic fiber in the silent down jacket fabric is 300-800.

[0017] In one possible implementation, the single fiber fineness of the second yarn is 0.1-1 dtex.

[0018] In one possible implementation, the Young's modulus of the first filament in the wet state is greater than or equal to 2.5 GPa.

[0019] This invention controls the Young's modulus of two types of yarns to a low and matched range, and combines this with specific fiber ratios, yarn structures, and weaving parameters to make the energy transfer between fibers more gentle when the fabric is subjected to friction or bending, thereby significantly reducing noise generation. Simultaneously, the high strength of the second filament compensates for the insufficient strength of the first filament, ensuring the fabric's durability. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0021] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0022] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0023] The embodiments of the present invention will be described in detail below in order to better understand the purpose, features and advantages of the present invention.

[0024] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0025] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0026] This application provides a fabric for down jackets, which is woven from a first yarn and a second yarn. The first yarn itself is a composite structure, composed of two different filaments: a first filament and a second filament. The first filament is softer, with a dynamic Young's modulus in the range of 5-14 GPa, and constitutes the majority of the first yarn, accounting for ≥70% of its mass. Its function is to provide the fabric with a soft touch and quiet operation. The second filament is characterized by higher strength than the first filament. The main function of the second filament is to compensate for the insufficient strength of the first filament, acting like a "skeleton" to enhance the overall strength and durability of the yarn, ensuring that the fabric does not become easily damaged due to the use of a large amount of soft material.

[0027] On the other hand, the material of the second yarn itself has moderate stiffness, with a dynamic Young's modulus in the range of 12-20 GPa. The second yarn can provide the necessary support and resilience to the fabric, ensuring that the down jacket does not sag and remains in shape, while also avoiding excessive noise caused by friction with the first yarn due to its own stiffness.

[0028] The silent down jacket fabric provided in this embodiment of the invention achieves multiple synergistic technical effects through the technical solution defined above. Its core lies in improving the balance between the acoustic properties and mechanical properties of the fabric by starting from the material's intrinsic properties.

[0029] Traditional down jacket fabrics, in pursuit of strength and abrasion resistance, generally employ a multi-layered structure with a separate sound-dampening layer. However, this invention constructs a "dual low-modulus system": First, by limiting the Young's modulus of the first filament in the first yarn to 5-14 GPa and its proportion to ≥70%, the main body of the fabric is ensured to be composed of soft, low-rigidity fibers. These fibers exhibit excellent deformation capacity under stress and release energy gradually, thereby significantly suppressing the generation of violent vibrations and noise, laying the core foundation for the sound-dampening effect. Second, by controlling the Young's modulus of the second yarn within a moderate range of 12-20 GPa, it provides necessary elastic support while avoiding becoming a new noise source itself, and achieves good modulus matching with the first filament, further reducing heterogeneous friction noise caused by excessive differences in modulus between components. Actual measurement data shows that the friction noise of the fabric prepared according to this scheme can be reduced to below 40 dB(A).

[0030] Most importantly, this solution achieves quiet operation without sacrificing the fabric's essential mechanical strength. The key lies in the "low modulus, high strength" composite structure design within the first yarn: the second filament has a higher single-fiber strength than the first filament. It acts as a reinforcement embedded in the low-modulus first filament matrix, much like a "reinforced concrete" structure, effectively bearing and dispersing stress. This compensates for the lack of absolute strength in low-modulus materials such as regenerated cellulose, thus ensuring the fabric has excellent tear strength and durability.

[0031] Furthermore, since the main body of the fabric is composed of low-modulus, high-proportion regenerated cellulose fibers, it naturally imparts a soft, smooth, and skin-friendly feel, significantly improving wearing comfort. The medium-modulus second yarn provides moderate elastic recovery, making the garment more form-fitting and less prone to wrinkles. Moreover, the down jacket fabric of this application is a single-layer design, ensuring breathability. In summary, the embodiments of this invention do not rely on simple finishing coatings, i.e., adding an extra sound-absorbing layer, as this is not durable and affects breathability. Instead, the embodiments of this invention achieve a balance of quietness, strength, and comfort through materials science design and structural optimization, forming a high-performance, quiet down jacket fabric.

[0032] In summary, the core idea of ​​this solution is to cleverly balance the seemingly contradictory needs of the fabric for "softness and quietness" and "strong elasticity" by combining the first yarn, which is "flexible and resilient," with the second yarn, which has "moderate elasticity." This results in a quiet down jacket fabric that is comfortable to wear, quiet to move in, and durable enough.

[0033] In one possible implementation, the thickness of the two filaments constituting the first yarn is specifically defined. The first filament (the softer one) has a thickness ranging from 40 to 80 deniers (D). This can be understood as a medium-fine to medium-coarse filament, designed to ensure a sufficient proportion to provide a soft, full-bodied feel and basic fabric structure. The second filament (the stronger one) has a thickness ranging from 15 to 30 deniers (D). This means it is a finer filament, its role not to provide volume, but rather to act as an "invisible" reinforcing rib, embedded within the thicker first filament, efficiently enhancing overall strength and durability without significantly increasing yarn stiffness or rigidity. Simply put, this combination of "primarily soft, coarse filament, supplemented by a fine, strong filament" is intended to optimize both the softness and strength of the yarn in the most efficient way.

[0034] In one possible implementation, we optimized the fabric's weave structure by using the first yarn as the warp, the longitudinal skeleton of the fabric, and the second yarn as the weft, the transversely interwoven yarn. In terms of density settings, the number of warp yarns (warp density) is set between 150 and 220 per inch, and the number of weft yarns (weft density) is set between 70 and 100 per inch. The purpose of this is to use the warp as the skeleton; the higher density (150-220 yarns / inch) ensures a tight fabric structure, dimensional stability, and abrasion resistance, allowing the soft material in the first yarn to fully utilize its quiet and soft properties. The relatively lower weft density (70-100 yarns / inch) provides sufficient room for the elastic second yarn to move freely, ensuring good elasticity, flexibility, and bulkiness of the fabric, and preventing stiffness, loss of elasticity, or friction noise caused by overly tight weave. In summary, this combination of "high warp density and low weft density" is intended to allow two yarns with different characteristics to each perform their respective functions, working together to create a stable, soft, and flexible silent fabric.

[0035] In one possible implementation, we designed and controlled the density of the fabric yarn filling, i.e., the "coverage factor." Specifically, the coverage factor along the fabric length direction (warp) is between 1800 and 2400, while the coverage factor along the fabric width direction (weft) is between 500 and 800. The advantage of this design is that a higher warp coverage factor (1800-2400) means the warp yarns are very tightly packed, resulting in a robust fabric structure, dimensional stability, and improved tear resistance and windproofing, preventing down from escaping. Conversely, a lower weft coverage factor (500-800) provides ample room for the elastic yarns to stretch, ensuring excellent flexibility and elastic recovery in the lateral direction, allowing for a more body-hugging fit and greater comfort during movement, while also reducing the possibility of noise caused by excessive yarn compression and friction. In summary, by intentionally setting a high warp coverage coefficient and a low weft coverage coefficient, the fabric achieves both a tight protective structure and comfortable elasticity, balancing the windproof and warmth performance required for down jackets with dynamic wearing comfort.

[0036] In one feasible implementation, the silent down jacket fabric is woven using a plain weave structure. Because a plain weave creates numerous uniform interlacing points, the fabric structure is tight and strong, preventing down from escaping and providing excellent windproof performance—a fundamental requirement for down jackets. Simultaneously, the plain weave structure lacks excessively long floats, preventing undue restriction of the elastic weft yarns and ensuring the fabric's necessary elasticity and flexibility. Furthermore, it helps control the overall thickness of the fabric, achieving a lightweight wearing experience.

[0037] In one possible implementation, the weight per square meter of the silent down jacket fabric is set to no less than 120 grams. This weight level ensures the fabric possesses excellent windproof, tear-resistant, and durable properties, effectively preventing down from escaping and meeting the functional requirements of down jackets as durable clothing. Despite the higher weight, thanks to the unique material combination and structural design, the fabric successfully achieves a balance between comfort and quietness. The key lies in the low-modulus first filament we select (such as regenerated cellulose fiber), which inherently possesses a soft texture. Even with the higher weight, it maintains the skin-friendly and smooth feel of the fabric against the skin, avoiding the stiffness often found in traditional high-density fabrics. At the same time, a reasonable combination of warp and weft density and coverage coefficient (such as a high warp density and a moderate weft density) ensures a tight structure while allowing for stretching space for the elastic weft yarns, making the fabric stable in the longitudinal direction and flexible in the lateral direction, without creating a feeling of restriction during movement. Most importantly, the combination of low-modulus fibers and medium-modulus elastic yarns reduces the surge in frictional energy at the material level. This means that even with a high unit weight, the fabric only generates weak vibrations during friction or bending, thus maintaining excellent noise reduction performance. In summary, the solution of this application, through material and structural design, breaks through the traditional perception that "high weight inevitably comes with high noise and low comfort," achieving a high-performance, quiet down jacket fabric that is both heavy and flexible, dense yet still silent.

[0038] In one feasible implementation, we specifically selected the core materials to synergistically achieve the fabric's quiet and comfortable properties. The first filament is a regenerated cellulose filament, such as cupro, rayon, acetate, or tencel. These fibers, derived from natural wood or bamboo, are characterized by their extreme softness, smoothness, and excellent moisture absorption and breathability. Using them as the main component directly imparts a skin-friendly feel and physiological comfort similar to silk or high-end underwear to the fabric. This is the physical basis for achieving "quietness," as the soft surface and the fibers themselves do not easily generate intense friction and vibration. The second yarn is an elastic yarn, such as spandex core-spun yarn or bicomponent elastic polyester yarn. It acts like a "flexible skeleton" for the fabric, providing the necessary tensile recovery and elasticity. This makes the fabric no longer a rigid piece of cloth, but one that can stretch and contract freely with body movement, ensuring freedom of movement and comfort while preventing noise caused by fabric tension and friction.

[0039] In summary, the core idea behind this combination is to use extremely soft and skin-friendly regenerated cellulose as the main material to minimize noise sources and enhance the tactile experience; at the same time, we added elastic yarn to compensate for the lack of elasticity in regenerated cellulose, ensuring freedom of movement in the fabric. These two elements work together to create an innovative, quiet down jacket fabric that is both comfortable against the skin, allows for free movement, and is completely silent.

[0040] In one feasible implementation, we have set a key quality requirement for the first filament (the main fiber providing soft and quiet properties): its Young's modulus (resistance to deformation) must still be greater than or equal to 2.5 GPa when wet. This is because many natural or regenerated cellulose fibers share a common drawback—they "soften when wet." When they absorb moisture, the forces between the fiber molecular chains weaken, causing a significant drop in stiffness, making them limp and weak, like a soaked tissue. Our specific requirement of a wet modulus of no less than 2.5 GPa for the first filament ensures that down jackets made from this fabric can still "hold their own" in wet environments. Whether in rain, snow, or after sweating, the fabric maintains a certain structure and crispness, preventing it from clinging softly to the body and thus preserving the garment's shape and appearance. Simultaneously, ensuring the first filament fibers maintain sufficient stiffness in a wet state means that it will not generate abnormal or excessive noise due to excessive weakness during friction, guaranteeing the stability of its quiet performance. In short, this regulation sets a minimum strength threshold for the "soft fibers" we select, ensuring that they are not only soft and quiet when dry, but also a high-quality material that is reliable and can withstand complex usage environments, thereby comprehensively improving the practicality and user experience of down jackets.

[0041] In one possible implementation, the second filament in the first yarn used to enhance strength is specifically selected from common materials such as polyester (polyester fiber) or nylon (nylon). While the soft first filament (such as regenerated cellulose fiber) provides excellent quietness and a comfortable feel, its strength is often insufficient. Therefore, we introduce high-strength synthetic fibers such as polyester or nylon as "reinforcing ribs," improving the fabric's abrasion resistance, tear resistance, and structural stability, thereby ensuring the fabric's durability during daily wear and washing.

[0042] In one possible implementation, the second yarn used to provide elasticity can specifically be a side-by-side bicomponent elastic yarn, spandex-covered yarn, spandex core-spun yarn, or spandex twisted yarn. Side-by-side bicomponent elastic yarn offers advantages such as excellent elasticity and a soft, comfortable feel. Spandex-covered yarn is like a highly elastic rubber band (spandex filament) with another filament (such as nylon or polyester) spirally wrapped around it. The outer filament provides abrasion resistance and appearance, while the inner spandex provides core elasticity. Spandex core-spun yarn is similar to covered yarn, also using spandex as the "core," but unlike covered yarn, the outer layer is wrapped with cotton or synthetic yarn spun from short fibers. This gives the fabric both elasticity and a cotton-like feel. Spandex twisted yarn is like twisting a spandex filament and a regular yarn together like a braid. In summary, by selecting these specific types of elastic yarns, we ensure that our fabrics consistently achieve the required elasticity. At the same time, the moderate modulus of these yarns (12-20 GPa) perfectly matches our soft warp yarns, together achieving the dual goals of "elastic comfort" and "quiet operation".

[0043] In one feasible implementation, we have meticulously designed the thickness of each monofilament (or "single fiber") constituting the second yarn (i.e., the elastic yarn), controlling it to be less than 1 dtex, and more preferably less than 0.5 dtex. "Dtex" is a unit of measurement for fiber fineness; the smaller the number, the finer the fiber. Below 0.5 dtex falls into the categories of fine denier, ultrafine, and even extra-fine. The reason for choosing such fine fibers to manufacture the elastic yarn is primarily to achieve the following effects: First, using a second yarn of 0.1 to 1 dtex is to enhance the softness and skin-friendly feel of the fabric. A yarn is composed of countless extremely fine fibers, and the finer the fibers, the softer and smoother the overall feel of the yarn, avoiding any roughness in the fabric and thus enhancing the final skin-friendly comfort. Simultaneously, it maintains lightweight while optimizing elasticity. The extremely fine fibers reduce resistance during bending and stretching, resulting in elastic fabrics that are not only highly resilient but also more supple and pressure-free, while preserving their lightweight characteristics. Finally, it enhances the fabric's density and aesthetics, as the abundant fine fibers can be more tightly packed into the yarn, creating a more compact structure and a smoother surface. This not only improves the texture but also further reduces friction noise caused by surface roughness. Simply put, limiting the single-fiber fineness of the second yarn to 0.1-1 dtex is a key material measure we take to achieve "premium texture" and "superior comfort." It means we are not using ordinary coarse elastic yarn, but a particularly fine, high-quality elastic fiber. This ensures that the final fabric simultaneously achieves a silky touch, soft elasticity, and a dense structure, perfectly aligning with our overall goal of quiet comfort.

[0044] In one feasible implementation, we meticulously controlled the "proportion" or "filling degree" of the two functionally different yarns in the fabric to ensure optimal performance. For the "low Young's modulus fiber" (i.e., the main component of the first yarn) that provides softness and quietness, we set the coverage factor of the first yarn in the fabric between 1500 and 2900. These soft fibers achieve a very full and dense filling state in the fabric. This high filling degree ensures a dense fabric structure and a supple hand feel, which helps prevent down from escaping and forms the main basis for the quietness performance. At the same time, the dense structure also provides good wind resistance.

[0045] For the "low Young's modulus elastic fiber," or the second yarn, which provides elasticity, we control the coverage factor of the second yarn between 300 and 800. This relatively low value means that the elastic yarn maintains adequate space and freedom of movement within the fabric. This allows sufficient room for the yarn to stretch and rebound, ensuring the fabric has excellent elasticity, allowing for free movement and a comfortable, unrestricted feel when worn, and preventing the elastic yarn from losing its resilience or generating rebound noise due to excessive compression.

[0046] In summary, the synergistic setting of these two values ​​allows the silent fibers to be dense enough to provide primary protection, while the elastic yarns remain moderately loose to play a flexible supporting role. This combination is the key design trick that enables the fabric to simultaneously possess three seemingly contradictory properties: windproof and abrasion-resistant, soft and quiet, and comfortable and elastic.

[0047] This application evaluates the frictional sound of woven fabrics by measuring the decibels of sound generated when fabrics rub against each other using a sound level meter. In other words, under the same environmental conditions and with the sound level meter and fabric positions unchanged, the application measures the difference in decibel levels of sound before and during fabric-to-fabric friction. The fabric-to-fabric friction is achieved using a color fastness-to-rubbing tester, where the fabric surfaces rub against each other under the load and speed conditions specified for color fastness-to-rubbing testing.

[0048] Of course, in other solutions, the sound level generated by fabric friction can be measured directly in a quiet room with low background noise.

[0049] By taking multiple measurements using the above method and averaging the results, the sound level of the fabric can be obtained.

[0050] Specifically, the noise level (dB) was measured using a sound level meter (accuracy: ±0.1 dB). In a quiet room with background noise ≤20 dB, referring to the basic principles of the abrasion test in GB / T 3920-2024 "Textiles - Tests for Color Fastness to Rubbing", an abrasion fastness tester (such as the Y571B model) was used. The vertical downward pressure was set to (9±0.2) N, the linear reciprocating stroke was (104±3) mm, and the running speed was one reciprocating friction cycle per second. The fabrics were rubbed back and forth for 30 cycles. The maximum noise level in decibels generated during the friction process was recorded, and the average value of 5 tests was taken.

[0051] Tear strength (N) is determined according to GB / T 3917.2-2009 "Textiles - Tear Properties of Fabrics - Part 2: Determination of Tear Strength of Trousers Specimens (Single Seam)".

[0052] Fabric density (threads / inch) is determined according to GB / T 4668-1995 "Determination of density of woven fabrics". Using a fabric density microscope, the number of yarns per unit length in the warp and weft directions is measured at different positions on the sample. The average value of three measurements is taken for each direction and converted to the number of yarns per inch.

[0053] Fabric structure is determined by observing and confirming that the interweaving structure of the fabric is a plain weave using a fabric microscope or digital fabric analysis system.

[0054] The yarn denier factor (D) and fineness (dtex) are determined according to GB / T 14343-2008 "Test Method for Linear Density of Chemical Fiber Filaments". The yarn count tester or precision balance is used to measure and calculate the mass of yarn per unit length, and then convert it into denier (D) or decitex (dtex).

[0055] Young's modulus (dynamic modulus) is measured using a dynamic mechanical analyzer (DMA) according to ASTM D5026-15 "Standard Test Method for Plastics: Dynamic Mechanical Properties: InTension" at a frequency of 1 Hz and a strain of 0.1%.

[0056] First Embodiment

[0057] In this embodiment, as shown in Tables 1, 2, 5, and 6, the silent down jacket fabric is made by interlacing the first and second yarns in a plain weave. Plain weave is a tightly woven structure that helps prevent down from escaping and provides a stable framework for the fabric.

[0058] The first yarn is the warp yarn, which is a composite yarn composed of a first filament and a second filament. The first filament is made of 75 denier (75D) cupro fiber. Cupro fiber is a regenerated cellulose fiber, characterized by its extreme softness, smooth surface, and low dynamic Young's modulus, ranging from 5 to 14 GPa. The first filament accounts for a high percentage (≥70%) of the total weight of the warp yarn and is the primary source of the fabric's skin-friendly feel and quiet operation.

[0059] The second filament is made of 20 denier (20D) bright polyester FDY filament. The single fiber strength of polyester is significantly higher than that of cupro fiber. It acts like the "steel bars" in cement, responsible for enhancing the overall strength and durability of the yarn, making up for the lack of absolute strength of cupro fiber.

[0060] The first and second filaments are compounded in a 15:4 mass ratio, resulting in a final linear density of 95D for the entire warp yarn. They undergo a twisting process of 600 twists / meter (T / M) to tightly bond the soft cupro fiber and the strong polyester filament, resulting in a circular cross-section.

[0061] The second yarn is the weft yarn, which is a 50-denier (50D) polyester bicomponent elastic yarn. This yarn itself has moderate stiffness, with a dynamic Young's modulus in the range of 12-20 GPa. Its core function is to provide the fabric with the necessary lateral elasticity and resilience, ensuring that the garment can move freely when worn and will not generate severe friction noise with the warp yarns due to tension.

[0062] In this embodiment, the weaving structure of the silent down jacket fabric is as follows: the warp density is 206 yarns per inch (in) and the weft density is 88 yarns per inch (in). This "high warp density, low weft density" configuration ensures the tightness of the fabric structure on the one hand, and also leaves room for the stretching and contraction of the elastic weft yarn on the other hand.

[0063] The overall benefits of this solution are as follows: Because the main body of the fabric is composed of soft, low-modulus cupro fibers, it generates minimal vibration and noise during friction. Testing shows that the fabric produces only 26 decibels (dB), falling into the "quiet" category, far lower than traditional fabrics. Furthermore, thanks to the reinforcing effect of high-strength polyester filaments, the fabric's tear strength reaches 8.2N, fully meeting the durability requirements of down jackets. In terms of comfort and functionality, cupro fibers provide excellent softness and a skin-friendly feel, while the polyester bicomponent elastic yarn offers moderate elasticity (flexible elasticity), ensuring wearing comfort. The fabric also has a good sheen.

[0064] In summary, the first embodiment, through the warp composite design of "cuproximate (soft and quiet) + polyester (strong support)" and the combination of "elastic polyester yarn" weft yarn, works synergistically to successfully achieve the three core objectives of excellent noise reduction, reliable mechanical strength, and comfortable wearing experience.

[0065] Second Embodiment

[0066] In another specific and preferred embodiment, we provide another silent down jacket fabric configuration, as shown in Tables 1, 2, 5, and 6. This fabric is also woven in a plain weave to ensure structural stability and wind resistance. The first yarn is the warp yarn, which employs a "soft-hard composite" structure similar to that of the first embodiment, but with enhanced fiber compatibility.

[0067] The first filament still uses 75 denier (75D) cupro fiber as the main body. It provides the foundation for the soft touch and quiet performance required by the fabric. The second filament replaces the reinforcing fiber with 20 denier (20D) nylon FDY filament. Nylon also has high strength and excellent abrasion resistance, and its function is similar to that of polyester in the first embodiment, serving as a "skeleton" embedded in the cupro fiber, significantly improving the strength and durability of the yarn.

[0068] The first and second filaments are compounded in a 15:4 mass ratio, and the overall warp yarn density is 95D. A twisting process of 450 twists / meter (T / M) is used (slightly lower than the first embodiment), which makes the yarn slightly soft while maintaining good cohesion and with a round cross-section.

[0069] The second yarn is the weft yarn, which employs a different elasticity technology, using a 36-denier (36D) nylon / spandex core-spun yarn. This is an elastic yarn made with spandex filaments as the core and an outer layer of spirally wrapped nylon filaments. In this elastic yarn, spandex forms the core layer, providing excellent core elasticity and recovery rate; the outer layer is nylon, which gives the yarn abrasion-resistant, smooth appearance and protects the internal spandex. This weft yarn structure provides higher elasticity (medium-high elasticity, compact elasticity) than the first embodiment.

[0070] In this embodiment, the fabric has a tighter weave density, with a warp density of 210 threads / inch and a weft density of 106 threads / inch. The higher weft density is to match the high elasticity of the core-spun yarn, ensuring that the fabric has uniform elasticity and is not easily deformed.

[0071] The effects of this solution are as follows: The main cupro fiber continues to provide excellent noise reduction. Testing showed the fabric's noise level to be 32 dB, still within the "quiet" range, slightly higher than the first embodiment, but far superior to traditional fabrics. Furthermore, due to the use of very high-strength nylon as reinforcing fiber, the fabric's tear strength reached the highest of all embodiments at 8.4 N, demonstrating exceptional durability and tear resistance. In terms of comfort and functionality, cupro fiber ensures basic softness. The most significant feature is the use of spandex core-spun yarn in the weft yarns, giving the fabric a higher degree of elasticity (medium-high elasticity) and a more compact, snug feel, allowing for greater freedom of movement and a stronger sense of support.

[0072] In summary, the second embodiment demonstrates a "high-strength, high-elasticity" technical solution. By replacing the reinforcing fibers of the warp yarns with nylon and using spandex core-spun yarn as the weft yarn, it maintains excellent quietness while raising the strength and elasticity of the fabric to a higher level, making it ideal for down jacket products that require greater durability and freedom of movement.

[0073] Third Embodiment

[0074] In this embodiment, we explored the use of different types of regenerated cellulose fibers as the sound-absorbing body, as shown in Tables 1, 2, 5 and 6. In this embodiment, the fabric is still woven with a plain weave to ensure structural stability and production versatility.

[0075] The first yarn is the warp yarn, which uses a different "soft-hard composite" ratio scheme than in the previous embodiments. The first filament is a 100-denier (100D) rayon filament. Rayon is also a regenerated cellulose fiber with good skin-friendliness, moisture absorption, and a soft touch, and is the main source of its noise reduction effect. The second filament is a 10-denier (10D) bright polyester FDY filament. Its core function is also to compensate for the lack of strength in rayon fibers and enhance the durability of the yarn.

[0076] The first and second yarns are compounded in a 10:1 mass ratio, which differs from the 15:4 ratio in the previous embodiment, as the proportion of rayon is higher in this embodiment. The final linear density of the entire warp yarn is 110D. A twisting process of 600 twists / meter (T / M) is used to ensure sufficient cohesion, resulting in a circular yarn cross-section.

[0077] The second yarn is the weft yarn, which is a 50-denier (50D) polyester bicomponent elastic yarn (the same as in the first embodiment). This yarn provides moderate elastic recovery (medium elasticity), ensuring basic comfort and movement of the fabric, and matches the warp modulus to maintain a quiet environment.

[0078] The fabric has a relatively low weave density, with 186 threads / inch in the warp and 84 threads / inch in the weft. This relatively loose structure is suited to the characteristics of rayon fibers, helping to maintain its soft hand feel.

[0079] The overall effects of this solution are as follows: Rayon fibers successfully inherit the quietness advantage of regenerated cellulose fibers. Testing showed that the fabric produced 35 dB of noise, slightly higher than the cupro-based embodiment (26-32 dB), but significantly lower than the comparative traditional fabric (55 dB), placing it in the "quiet" category. Furthermore, due to the inherently lower wet strength of rayon fibers and the relatively low proportion of reinforcing polyester (10:1), the fabric's tear strength is 7.2 N. While still meeting usage requirements, it is the lowest strength among all embodiments, reflecting the performance trade-offs resulting from material selection. In terms of comfort and functionality, rayon provides the fabric with excellent skin-friendliness and a soft touch. The polyester elastic yarn provides the necessary elasticity, resulting in an overall moderate level of suppleness and elasticity.

[0080] In summary, this embodiment demonstrates a technical solution that prioritizes "high comfort and quiet operation." By using rayon as the primary sound-absorbing material, combined with a lower proportion of reinforcing fibers and a relatively loose fabric density, it ultimately produces a fabric that is extremely soft and comfortable to the touch, with good sound-absorbing performance, but at the cost of some compromise in absolute strength. This provides an effective, low-cost option for applications that prioritize ultimate comfort and quiet operation but do not have extremely stringent requirements for abrasion resistance.

[0081] Fourth embodiment

[0082] In this embodiment, the fabric performance is optimized by using finer yarns and high-density weaving, as shown in Tables 1, 2, 5 and 6. The specific configuration is as follows: This scheme still uses a plain weave, which is a reliable basis for achieving structural stability and preventing down from escaping.

[0083] The first yarn is the warp, which uses a finer denier fiber blend for a more delicate texture. The first filament is made of 50 denier (50D) cupro fiber. The finer fiber means a softer hand feel and a more supple texture, continuing to be a primary provider of quietness and comfort. The second filament is made of 10 denier (10D) bright polyester FDY filament. Its role is to provide the necessary strength support for the fine cupro fiber, preventing the yarn from breaking easily due to its thinness. The first and second filaments are compounded in a 5:1 mass ratio, with a higher proportion of cupro fiber. The final linear density of the entire warp is 60D, the finest warp yarn in all embodiments. It undergoes a twisting process of 600 twists / meter (T / M) and has a circular cross-section.

[0084] The second yarn is the weft yarn, which is a 30-denier (30D) polyester bicomponent elastic yarn. The finer elastic yarn was chosen to match the finer denier warp yarn in style and scale, providing the fabric with a delicate and soft elasticity, and avoiding the stiffness that might result from using coarser elastic yarn.

[0085] In terms of fabric weaving structure, to compensate for the potential loosening of the structure due to finer yarns, we have significantly increased the weaving density. The warp density is as high as 260 threads / inch, and the weft density is 112 threads / inch. This high warp and weft density design ensures that even with less material and finer yarns, the fabric still maintains an extremely tight structure, thus possessing excellent windproof and downproof performance.

[0086] The overall benefits of this design are as follows: the finer cupro fibers provide excellent softness, which helps reduce noise. The measured noise level is 36 dB, still within the "quiet" range, but its acoustic performance is slightly inferior to embodiments using coarser cupro fibers (such as the first embodiment at 26 dB). This may be due to the increased contact and friction points between the yarns caused by the high-density weave. The fabric's tear strength is 7.4 N. Although the yarns are fine, the high-density weave and retention of reinforcing fibers ensure that its strength remains at a satisfactory and usable level. In terms of comfort and functionality, the fabric's greatest advantages lie in its delicate, lightweight texture and the dense feel characteristic of high-density fabrics. Elasticity is moderately supple and resilient.

[0087] In summary, this embodiment demonstrates a technical solution with a "delicate and high-density" style. It successfully developed a quiet fabric with a delicate feel, dense texture, and a certain degree of lightness by using finer cupro fibers and polyester reinforcing yarns to form the warp yarns, combined with finer elastic weft yarns and woven with extremely high warp and weft density. This solution is very suitable for down jackets that pursue a high-end feel and lightweight experience. Although it is not optimal in terms of absolute quietness and strength, it forms a distinctive feature in terms of delicacy and fabric density.

[0088] First comparison

[0089] In the first comparative test, a quiet down jacket fabric scheme was provided for comparison, as shown in Tables 3, 4, 5, and 6, with the following specific configuration:

[0090] The fabric is also woven in a plain weave, with a warp density of 200 threads / inch and a weft density of 86 threads / inch. Its structure and density are basically consistent with some embodiments of the present invention to ensure the fairness of the comparison as much as possible.

[0091] The first yarn is the warp yarn, which is made of 95 denier (95D) single-component bright polyester FDY filament. The core characteristics of ordinary polyester fiber are high strength and high rigidity, and its dynamic Young's modulus is much higher than the 5-14 GPa range required by this invention. This means that the fiber is stiff, not easily deformed, and has a rapid and strong rebound.

[0092] The second yarn is the weft yarn, which uses 50 denier (50D) polyester bicomponent elastic yarn.

[0093] The overall test results of this comparative scheme are as follows: Regarding noise reduction: Test results show that the fabric generates noise up to 55 dB. This is significantly higher than all embodiments of this invention (26-37 dB), reaching the "quite noisy" level. The fundamental reason is that the main skeleton of the fabric (warp yarns) is entirely composed of ordinary polyester with high modulus and high rigidity. When this material is rubbed or bent, it vibrates violently due to its high rigidity and fast rebound speed, thus producing a significant "rustling" noise. This proves that using only high-modulus fibers as the main body cannot achieve the goal of noise reduction.

[0094] In summary, the first comparative example demonstrates that the core of quietness comes from low-modulus fibers. Even if the same elastic weft yarn and weaving structure as the present invention are used, the noise problem cannot be solved as long as the main body of the fabric still uses traditional fibers with high modulus and high rigidity (such as ordinary polyester).

[0095] Second pair of proportions

[0096] In the second comparative example, as shown in Tables 3, 4, 5 and 6, this scheme demonstrates in reverse the rationality of the arrangement of the first yarn as warp and the second yarn as weft in the embodiment of the present invention. Specifically, the fabric in this comparative example is woven with a plain weave, but the key difference is that it uses elastic yarn as warp and conventional yarn as weft, which is exactly the opposite of the structure defined in the claims of the present invention.

[0097] In this comparative example, the first yarn is the warp yarn, which is an elastic yarn. Specifically, the warp yarn is a 40-denier (40D) bright nylon FDY filament. This is a high-modulus, high-strength conventional synthetic fiber with a Young's modulus higher than the requirement of the first filament of this invention (5-14 GPa). It provides rigidity where it should provide elasticity.

[0098] The second yarn is the weft yarn, which uses 50 denier (50D) island-type polyester yarn. This is a microfiber yarn made through a special process, which has little or no elasticity. Instead of providing sufficient support where it should act as a stable framework, it fails to do so.

[0099] In addition, the fabric has a very high warp density, approximately 285 threads per inch, and a weft density of 86 threads per inch. The high warp density is intended to control the inelastic weft yarns.

[0100] The overall test results and problems exposed by this comparative scheme are as follows: In terms of quietness, the test showed a noise level of 32 dB, which seems good on paper. However, this is a "pseudo-quiet" noise. The source of its quietness is not the low modulus of the material, but rather the lack of effective elastic elements. The fabric as a whole is stiff due to the inelasticity of the weft yarns, resulting in small friction and deformation amplitude, thus producing less noise. However, this severely sacrifices the comfort and freedom of movement of the garment.

[0101] Furthermore, its tear strength is as high as 10.5N. This is not an advantage, but rather a sign of structural imbalance. It stems from the extremely high density of ultra-high-strength nylon warp yarns woven together, creating an overly rigid "steel plate" structure. The fabric exhibits weak elasticity, offering almost no comfortable elastic recovery. This is due to the lack of elastic weft yarns, preventing the fabric from comfortably stretching and contracting with body movement.

[0102] In conclusion, the second parallel model, which reverses the functional roles of warp and weft yarns in this invention, demonstrates the crucial importance of yarn role arrangement: the invention's use of low-modulus composite yarn as warp (providing quietness and strength) and elastic yarn as weft (providing elasticity) is a well-thought-out and optimal system architecture. The reversed design in the second parallel model results in a fabric that completely lacks elasticity, thus creating false quietness data.

[0103] Table 1 Parameters of the first yarn and the second yarn in the first to fourth embodiments

[0104]

[0105] Table 2 Parameters and properties of the woven fabrics formed in the first to fourth embodiments

[0106]

[0107] Table 3 Parameters of the first and second yarns in the first to second comparative examples

[0108]

[0109] Table 4. Parameters and properties of the woven fabrics formed in the first and second comparative examples.

[0110]

[0111] Table 5. Reference Table for Fabric Sound Level Classification

[0112]

[0113] Table 6 Reference Table for Tear Strength Grade Classification of Fabrics

[0114]

[0115] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0116] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0117] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A silent down jacket fabric, characterized in that, The silent down jacket fabric is formed by interlacing a first yarn and a second yarn; The first yarn contains a first filament and a second filament. The first filament has a Young's modulus of 5-14 GPa under dynamic modulus. The first filament accounts for more than or equal to 70% of the mass of the first yarn. The first filament is a regenerated cellulose filament. The second filament is a bright polyester FDY filament or a nylon FDY filament, and the single fiber strength of the second filament is greater than that of the first filament. The first filament and the second filament are twisted together to form the first yarn; The material of the second yarn has a Young's modulus of 12-20 GPa under dynamic modulus. The second yarn is a parallel bicomponent elastic yarn, or the second yarn is spandex covered yarn, spandex core-spun yarn, or spandex twisted yarn. The first yarn is a warp yarn, the second yarn is a weft yarn, and the warp coverage coefficient of the silent down jacket fabric is 1800-2400, and the weft coverage coefficient is 500-800.

2. The silent down jacket fabric according to claim 1, characterized in that, The denier of the first filament is 40-80D, and the denier of the second filament is 15-30D; Or, the weight per square meter of the down jacket fabric is 120g or more; Or, the meridian density is 150-220 meridians / in, and the latitudinal density is 70-100 meridians / in; Alternatively, the fabric of the silent down jacket is plain weave.

3. The silent down jacket fabric according to claim 1, characterized in that, The regenerated cellulose filaments are cuprammonium cellulose or acetate cellulose.

4. The silent down jacket fabric according to claim 1, characterized in that, The regenerated cellulose filaments are human silk fibers.

5. The silent down jacket fabric according to claim 1, characterized in that, The regenerated cellulose filament is Tencel fiber.

6. The silent down jacket fabric according to claim 1, characterized in that, The fineness of the second yarn is 0.1-1 dtex.

7. The silent down jacket fabric according to claim 1, characterized in that, The first filament has a Young's modulus greater than or equal to 2.5 GPa in wet conditions.

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