High-breathability cool-feeling soft bamboo and linen yarn fabric and application thereof in clothes

Abstract

The invention discloses a high-breathability, cool-feeling and smooth bamboo and linen yarn fabric and application thereof in clothes, belongs to the technical field of textiles, and aims to solve the problems that the breathability is reduced, the hand feeling is hardened and the adhesive force of a coating is weak due to the fact that most of traditional coating modes adopt overall uniform coating, and pores of the fabric are prone to being blocked. The fabric is of a composite structure mainly comprising bamboo fibers and hemp fibers, the ratio of the hemp fibers is smaller than or equal to 10%, the surfaces of the inner side and the outer side of the fabric are each coated with a functional coating, the functional coatings are arranged in a hexagonal or rhombic grid or honeycomb shape, and the inner side portions of the functional coatings are connected with the surfaces of the fabric in a bonding mode. The bamboo fiber and hemp fiber blended structure is adopted, the hexagonal, rhombic or honeycomb discontinuous grid coating is matched, hole blocking of the coating is avoided, the air permeability of the fabric is greatly improved, meanwhile, the cool feeling component rapidly conducts heat, and continuous contact cool feeling is achieved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to a highly breathable, cool-feeling, and soft bamboo-linen yarn fabric and its application in clothing. Background Technology

[0002] Bamboo and hemp fibers are widely used in summer fabrics due to their natural breathability, moisture absorption, and cooling properties. To enhance the cooling and softness of existing bamboo and hemp fabrics, functional coatings are usually applied to their surface to meet different functional requirements.

[0003] Traditional coating methods mostly involve uniform coating, which can easily clog the pores of the fabric, leading to reduced breathability and a stiffer feel. In addition, there are problems such as weak coating adhesion and poor washability, and it is difficult to meet the comprehensive needs of high breathability, coolness and softness at the same time.

[0004] To address the above issues, a highly breathable, cool, and soft bamboo-linen yarn fabric and its application in clothing are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a highly breathable, cool, and soft bamboo and linen yarn fabric and its application in clothing. By using this device, the problems of traditional coating methods, which mostly involve uniform coating, are easily blocked in the pores of the fabric, resulting in reduced breathability, hardened hand feel, and weak coating adhesion are solved.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a highly breathable, cool and smooth bamboo-linen yarn fabric, which is a composite structure mainly composed of bamboo fiber and linen fiber, wherein the proportion of linen fiber is less than or equal to 10%, and functional coatings are applied to the inner and outer surfaces of the fabric respectively. The functional coatings are arranged in hexagonal, rhomboid mesh or honeycomb pattern, and the inner part of the functional coatings is bonded to the surface of the fabric respectively.

[0007] Furthermore, the functional coating comprises, by weight percentage, the following components: Mica powder: 12%; Jade micron powder: 3%; Phase change cooling microcapsules: 5%; Hydrophilic amino silicone oil: 6%; Bio-enzyme fabric softener: 2%; Waterborne polyurethane: 8%; Silane coupling agent: 1%; Thickener: 0.5%; Leveling agent: 0.3%; Deionized water: 62.2%.

[0008] Furthermore, the specific production steps are as follows: S1: Raw material selection and pretreatment, using 80% to 90% bamboo fiber, less than or equal to 10% hemp fiber, and 5% to 10% viscose fiber; Hemp fibers are degummed, combed, and softened to reduce fiber stiffness and itchiness, while bamboo fibers are opened, impurities removed, and humidified to improve cohesion. S2: Mixing, opening, and carding. Bamboo fiber, hemp fiber, and viscose fiber are automatically weighed and mixed in proportion to ensure uniform mixing. After multi-bin blending, fine opening, and carding, a bamboo-hemp blended fiber web is made. Then, after carding, a uniform, knot-free, and low-impurity bamboo-hemp blended cotton sliver is formed. S3: Drawing, roving and spinning; Drawing: 2 to 3 drawing passes, which make the fibers parallel and straight, mix more evenly, and improve yarn evenness; Roving: Properly drafted and twisted to produce roving; Fine yarn: High-count compact spinning process is used to spin bamboo and hemp blended yarn. During the spinning process, the twist coefficient is controlled to make the yarn soft but not prone to pilling. Ultimately, it can be made into bamboo and hemp blended single yarn, which can be used as the main yarn for fabrics; S4: Winding, warping, sizing and heddles threading; Winding: removes yarn defects, splices broken ends, and improves yarn quality. Warping: ensures uniform tension of the yarns, guaranteeing stable weaving; Sizing: Low-viscosity environmentally friendly sizing agent is used to enhance yarn abrasion resistance and prevent fuzziness; Then, after threading the heddles, it is ready to be woven on the loom; S5: The base fabric is woven using an air-jet loom to create a small twill weave. The warp and weft densities are designed to be lightweight and breathable, resulting in a highly breathable bamboo and linen blended base fabric. S6: The highly breathable bamboo-linen blended base fabric undergoes pretreatment, including singeing to remove surface fuzz; boiling and bleaching to remove impurities, pectin, and pigments; and bio-enzyme polishing and softening to further reduce the itchiness of linen fibers and improve the fabric's smoothness. S7: Apply a functional coating to the fabric using a hexagonal, diamond grid, or honeycomb pattern.

[0009] Furthermore, in S7, the preparation process of the functional coating is as follows: S701: Coating liquid preparation: Mica powder, jade micro powder, phase change cooling microcapsules, hydrophilic amino silicone oil, bio-enzyme softener, waterborne polyurethane, silane coupling agent, thickener, leveling agent and deionized water are added to a mixing tank according to the ratio, dispersed at low speed and then stirred at high speed until uniform and stable to obtain a low viscosity waterborne functional coating. S702: Coating and molding, using gravure roller coating, stencil coating or positioning spraying to apply the functional coating to the surface of bamboo and linen fabric; S703: Gradient drying and curing, first pre-drying at 80℃~100℃ to remove moisture, then fixing the coating at 120℃~150℃, and finally shaping at a temperature range of 160℃~170℃, so that the functional coating is firmly bonded to the fiber and does not block the air permeability channel. S704: Cooled into fabric, dried and cured, then naturally cooled to obtain a bamboo and linen yarn fabric that combines coolness, softness, and high breathability.

[0010] Furthermore, in S702, a hexagonal, rhomboid, or honeycomb discontinuous grid pattern is applied to the surface of the bamboo and linen fabric, and the coating coverage is controlled to be 30% to 70% to maintain good breathability.

[0011] Furthermore, in S703, the specific steps for gradient drying and curing are as follows: Pre-drying stage: The fabric coated with a hexagonal, rhomboid or honeycomb discontinuous grid pattern is sent into the drying oven and dried at 80℃~100℃ for 30~60 seconds to remove most of the moisture in the coating, so that the coating is initially set, does not flow or seep. Fixation stage: The fabric is sent into the medium temperature zone and heated at 120℃~150℃ for 40~70 seconds to fully cross-link the water-based polyurethane, coupling agent and fiber, so that the cooling functional particles are firmly bonded to the fabric. High-temperature setting stage: Finally, the fabric is sent to the high-temperature setting zone and heat-treated at 160℃~170℃ for 20~40 seconds to complete the complete curing of the coating. This is used to stabilize the fabric size and mesh structure and ensure that the functional coating has the properties of being washable, non-peeling, and non-clogging.

[0012] Furthermore, in S704, the specific steps for cooling the fabric are as follows: After being dried and cured in a three-stage gradient process, the fabric is fed into the cooling zone at a uniform speed by a guide roller. Within a temperature range of room temperature to 40°C, the fabric temperature is rapidly reduced to room temperature by air cooling or natural cooling. During the cooling process, the fabric tension must be kept uniform, flat and wrinkle-free to ensure the stability of the mesh coating structure and that the dimensions do not shrink or deform. After cooling, the fabric is expanded, rolled or trimmed to obtain the final highly breathable, cool and smooth bamboo and linen fabric.

[0013] Furthermore, highly breathable, cool, and soft bamboo and linen yarn fabrics are applied to the preparation of home textiles.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention adopts a blended structure of bamboo fiber and hemp fiber, combined with a hexagonal, rhomboid or honeycomb discontinuous mesh coating to avoid coating clogging and greatly improve the breathability of the fabric. At the same time, the cooling component quickly conducts heat to achieve a continuous cooling sensation, which can meet the needs of high-temperature scenarios.

[0015] 2. This invention addresses the shortcomings of traditional bamboo and hemp fabrics, such as stiffness and itchiness, by pre-treating hemp fibers, applying bio-enzyme softening finishing, and using hydrophilic and smoothing coating components, thereby improving the fabric's skin-friendliness.

[0016] 3. The gradient drying and curing process of this invention, combined with the bonding effect of the silane coupling agent, enables the coating to be firmly bonded to the fiber, and the cooling sensation and softness are not easily lost after washing. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional schematic diagram of the highly breathable, cool-feeling, and soft bamboo-linen yarn fabric of the present invention. Figure 2 This is a schematic diagram of the functional coating of the present invention by mass percentage; Figure 3 This is a flowchart illustrating the manufacturing process of the highly breathable, cool-feeling, and soft bamboo-linen yarn fabric of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2 As shown, a highly breathable, cool and smooth bamboo-linen yarn fabric has a composite structure mainly composed of bamboo fiber and linen fiber, wherein the proportion of linen fiber is less than or equal to 10%. The inner and outer surfaces of the fabric are coated with functional coatings, which are arranged in hexagonal, diamond grid or honeycomb pattern, and the inner part of the functional coating is bonded to the surface of the fabric.

[0020] By controlling the proportion of hemp fiber to ≤10%, the rapid heat dissipation advantage of hemp fiber is preserved while minimizing its stiffness. This is combined with the porous moisture-absorbing structure of bamboo fiber. In addition, both the inner and outer sides of the fabric are coated with a mesh-like functional coating. The coating is discontinuously distributed and firmly adheres to the fabric surface, which avoids clogging the pores and allows for rapid heat conduction through the double-sided coating, achieving a comprehensive and continuous cooling sensation. This makes its breathability and cooling performance superior to traditional bamboo and hemp fabrics.

[0021] The functional coating comprises the following components by weight percentage: Mica powder: 12%; Jade micron powder: 3%; Phase change cooling microcapsules: 5%; Hydrophilic amino silicone oil: 6%; Bio-enzyme fabric softener: 2%; Waterborne polyurethane: 8%; Silane coupling agent: 1%; Thickener: 0.5%; Leveling agent: 0.3%; Deionized water: 62.2%.

[0022] The functional coating in this invention uses a precise ratio of 12% mica powder, 3% jade micro powder, and 5% phase change cooling microcapsules. The three components work synergistically to exert a cooling effect. Mica powder and jade micro powder can quickly conduct heat to achieve an instant cooling sensation, while the phase change cooling microcapsules can actively absorb and release heat to maintain a long-lasting cooling effect. This avoids the short-lived effect of a single cooling component, making the cooling experience more stable and comfortable.

[0023] The functional coating in this invention, combined with 6% hydrophilic amino silicone oil and 2% bio-enzyme softener, can effectively neutralize the roughness of the fabric surface through the synergistic effect of the two, alleviating the problems of traditional functional coatings that easily cause the fabric to stiffen and itch; at the same time, the hydrophilic amino silicone oil can also improve the skin-friendliness of the coating to suit close-fitting use scenarios, without affecting the other functions of the coating.

[0024] The functional coating in this invention achieves efficient adhesion through a ratio of 8% waterborne polyurethane and 1% silane coupling agent, allowing the coating to bond tightly to the fabric surface, preventing it from peeling or curling. This significantly improves the coating's wash resistance, ensuring that its core functions such as coolness and softness are not lost after washing. Furthermore, the precise combination of 0.5% thickener and 0.3% leveling agent prevents seepage and dripping during coating application, allowing it to be stably molded into hexagonal, rhomboid, or honeycomb structures without blocking the fabric's breathable channels, thus balancing the molding effect with breathability requirements.

[0025] like Figure 3 As shown, the specific production steps for the highly breathable, cool, and soft bamboo and linen yarn fabric are as follows: S1: Raw material selection and pretreatment, using 80% to 90% bamboo fiber, less than or equal to 10% hemp fiber, and 5% to 10% viscose fiber; Hemp fibers are degummed, combed, and softened to reduce fiber stiffness and itchiness, while bamboo fibers are opened, impurities removed, and humidified to improve cohesion. S2: Mixing, opening, and carding. Bamboo fiber, hemp fiber, and viscose fiber are automatically weighed and mixed in proportion to ensure uniform mixing. After multi-bin blending, fine opening, and carding, a bamboo-hemp blended fiber web is made. Then, after carding, a uniform, knot-free, and low-impurity bamboo-hemp blended cotton sliver is formed. S3: Drawing, roving and spinning; Drawing: 2 to 3 drawing passes, which make the fibers parallel and straight, mix more evenly, and improve yarn evenness; Roving: Properly drafted and twisted to produce roving; Fine yarn: High-count compact spinning process is used to spin bamboo and hemp blended yarn. During the spinning process, the twist coefficient is controlled to make the yarn soft but not prone to pilling. Ultimately, it can be made into bamboo and hemp blended single yarn, which can be used as the main yarn for fabrics; S4: Winding, warping, sizing and heddles threading; Winding: removes yarn defects, splices broken ends, and improves yarn quality. Warping: ensures uniform tension of the yarns, guaranteeing stable weaving; Sizing: Low-viscosity environmentally friendly sizing agent is used to enhance yarn abrasion resistance and prevent fuzziness; Then, after threading the heddles, it is ready to be woven on the loom; S5: The base fabric is woven using an air-jet loom to create a small twill weave. The warp and weft densities are designed to be lightweight and breathable, resulting in a highly breathable bamboo and linen blended base fabric. S6: The highly breathable bamboo-linen blended base fabric undergoes pretreatment, including singeing to remove surface fuzz; boiling and bleaching to remove impurities, pectin, and pigments; and bio-enzyme polishing and softening to further reduce the itchiness of linen fibers and improve the fabric's smoothness. S7: Apply a functional coating to the fabric using a hexagonal, diamond grid, or honeycomb pattern.

[0026] In S7, the preparation process of the functional coating is as follows: S701: Coating liquid preparation: Mica powder, jade micro powder, phase change cooling microcapsules, hydrophilic amino silicone oil, bio-enzyme softener, waterborne polyurethane, silane coupling agent, thickener, leveling agent and deionized water are added to a mixing tank according to the ratio, dispersed at low speed and then stirred at high speed until uniform and stable to obtain a low viscosity waterborne functional coating. S702: Coating and molding, using gravure roller coating, stencil coating or positioning spraying to apply the functional coating to the surface of bamboo and linen fabric; S703: Gradient drying and curing, first pre-drying at 80℃~100℃ to remove moisture, then fixing the coating at 120℃~150℃, and finally shaping at a temperature range of 160℃~170℃, so that the functional coating is firmly bonded to the fiber and does not block the air permeability channel. S704: Cooled into fabric, dried and cured, then naturally cooled to obtain a bamboo and linen yarn fabric that combines coolness, softness, and high breathability.

[0027] In S702, a hexagonal, rhomboid, or honeycomb discontinuous grid pattern is applied to the surface of the bamboo and linen fabric, and the coating coverage is controlled at 30% to 70% to maintain good breathability.

[0028] In S703, the specific steps for gradient drying and curing are as follows: Pre-drying stage: The fabric coated with a hexagonal, rhomboid or honeycomb discontinuous grid pattern is sent into the drying oven and dried at 80℃~100℃ for 30~60 seconds to remove most of the moisture in the coating, so that the coating is initially set, does not flow or seep. Fixation stage: The fabric is sent into the medium temperature zone and heated at 120℃~150℃ for 40~70 seconds to fully cross-link the water-based polyurethane, coupling agent and fiber, so that the cooling functional particles are firmly bonded to the fabric. High-temperature setting stage: Finally, the fabric is sent to the high-temperature setting zone and heat-treated at 160℃~170℃ for 20~40 seconds to complete the complete curing of the coating. This is used to stabilize the fabric size and mesh structure and ensure that the functional coating has the properties of being washable, non-peeling, and non-clogging.

[0029] In S704, the specific steps for cooling the fabric are as follows: After being dried and cured in a three-stage gradient process, the fabric is fed into the cooling zone at a uniform speed by a guide roller. Within a temperature range of room temperature to 40°C, the fabric temperature is rapidly reduced to room temperature by air cooling or natural cooling. During the cooling process, the fabric tension must be kept uniform, flat and wrinkle-free to ensure the stability of the mesh coating structure and that the dimensions do not shrink or deform. After cooling, the fabric is expanded, rolled or trimmed to obtain the final highly breathable, cool and smooth bamboo and linen fabric.

[0030] This invention enables the application of highly breathable, cool, and soft bamboo and linen yarn fabrics in the preparation of home textiles; all components of this invention are environmentally friendly water-based materials, free of formaldehyde and other harmful components, and meet textile safety standards, making them suitable for products with high safety requirements such as intimate apparel and baby products; moreover, the proportions of each component are scientifically designed with no redundant components, ensuring functional compliance while controlling coating preparation costs.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly breathable, cool-feeling, and soft bamboo-linen yarn fabric, characterized in that: The fabric is a composite structure mainly composed of bamboo fiber and hemp fiber, with hemp fiber accounting for less than or equal to 10%. Functional coatings are applied to both the inner and outer surfaces of the fabric. The functional coatings are arranged in hexagonal, diamond grid, or honeycomb patterns, and the inner part of the functional coatings is bonded to the surface of the fabric.

2. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 1, characterized in that: The functional coating comprises the following components by weight percentage: Mica powder: 12%; Jade micron powder: 3%; Phase change cooling microcapsules: 5%; Hydrophilic amino silicone oil: 6%; Bio-enzyme fabric softener: 2%; Waterborne polyurethane: 8%; Silane coupling agent: 1%; Thickener: 0.5%; Leveling agent: 0.3%; Deionized water: 62.2%.

3. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 2, characterized in that: The specific production steps are as follows: S1: Raw material selection and pretreatment, using 80% to 90% bamboo fiber, less than or equal to 10% hemp fiber, and 5% to 10% viscose fiber; Hemp fibers are degummed, combed, and softened to reduce fiber stiffness and itchiness, while bamboo fibers are opened, impurities removed, and humidified to improve cohesion. S2: Mixing, opening, and carding. Bamboo fiber, hemp fiber, and viscose fiber are automatically weighed and mixed in proportion to ensure uniform mixing. After multi-bin blending, fine opening, and carding, a bamboo-hemp blended fiber web is made. Then, after carding, a uniform, knot-free, and low-impurity bamboo-hemp blended cotton sliver is formed. S3: Drawing, roving and spinning; Drawing: 2 to 3 drawing passes, which make the fibers parallel and straight, mix more evenly, and improve yarn evenness; Roving: Properly drafted and twisted to produce roving; Fine yarn: High-count compact spinning process is used to spin bamboo and hemp blended yarn. During the spinning process, the twist coefficient is controlled to make the yarn soft but not prone to pilling. Ultimately, it can be made into bamboo and hemp blended single yarn, which can be used as the main yarn for fabrics; S4: Winding, warping, sizing and heddles threading; Winding: removes yarn defects, splices broken ends, and improves yarn quality. Warping: ensures uniform tension of the yarns, guaranteeing stable weaving; Sizing: Low-viscosity environmentally friendly sizing agent is used to enhance yarn abrasion resistance and prevent fuzziness; Then, after threading the heddles, it is ready to be woven on the loom; S5: The base fabric is woven using an air-jet loom to create a small twill weave. The warp and weft densities are designed to be lightweight and breathable, resulting in a highly breathable bamboo and linen blended base fabric. S6: The highly breathable bamboo-linen blended base fabric undergoes pretreatment, including singeing to remove surface fuzz; boiling and bleaching to remove impurities, pectin, and pigments; and bio-enzyme polishing and softening to further reduce the itchiness of linen fibers and improve the fabric's smoothness. S7: Apply a functional coating to the fabric using a hexagonal, diamond grid, or honeycomb pattern.

4. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 3, characterized in that: In S7, the preparation process of the functional coating is as follows: S701: Coating liquid preparation: Mica powder, jade micro powder, phase change cooling microcapsules, hydrophilic amino silicone oil, bio-enzyme softener, waterborne polyurethane, silane coupling agent, thickener, leveling agent and deionized water are added to a mixing tank according to the ratio, dispersed at low speed and then stirred at high speed until uniform and stable to obtain a low viscosity waterborne functional coating. S702: Coating and molding, using gravure roller coating, stencil coating or positioning spraying to apply the functional coating to the surface of bamboo and linen fabric; S703: Gradient drying and curing, first pre-drying at 80℃~100℃ to remove moisture, then fixing the coating at 120℃~150℃, and finally shaping at a temperature range of 160℃~170℃, so that the functional coating is firmly bonded to the fiber and does not block the air permeability channel. S704: Cooled into fabric, dried and cured, then naturally cooled to obtain a bamboo and linen yarn fabric that combines coolness, softness, and high breathability.

5. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 4, characterized in that: In S702, a hexagonal, rhomboid, or honeycomb discontinuous grid pattern is applied to the surface of the bamboo and linen fabric, and the coating coverage is controlled at 30% to 70% to maintain good breathability.

6. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 5, characterized in that: In S703, the specific steps for gradient drying and curing are as follows: Pre-drying stage: The fabric coated with a hexagonal, rhomboid or honeycomb discontinuous grid pattern is sent into the drying oven and dried at 80℃~100℃ for 30~60 seconds to remove most of the moisture in the coating, so that the coating is initially set, does not flow or seep. Fixation stage: The fabric is sent into the medium temperature zone and heated at 120℃~150℃ for 40~70 seconds to fully cross-link the water-based polyurethane, coupling agent and fiber, so that the cooling functional particles are firmly bonded to the fabric. High-temperature setting stage: Finally, the fabric is sent to the high-temperature setting zone and heat-treated at 160℃~170℃ for 20~40 seconds to complete the complete curing of the coating. This is used to stabilize the fabric size and mesh structure and ensure that the functional coating has the properties of being washable, non-peeling, and non-clogging.

7. The highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to claim 6, characterized in that: In S704, the specific steps for cooling the fabric are as follows: After being dried and cured in a three-stage gradient process, the fabric is fed into the cooling zone at a uniform speed by a guide roller. Within a temperature range of room temperature to 40°C, the fabric temperature is rapidly reduced to room temperature by air cooling or natural cooling. During the cooling process, the fabric tension must be kept uniform, flat and wrinkle-free to ensure the stability of the mesh coating structure and that the dimensions do not shrink or deform. After cooling, the fabric is expanded, rolled or trimmed to obtain the final highly breathable, cool and smooth bamboo and linen fabric.

8. The application of the highly breathable, cool-feeling, and soft bamboo-linen yarn fabric according to any one of claims 1 to 7, characterized in that: Highly breathable, cool, and soft bamboo and linen yarn fabrics are used in the preparation of home textiles.

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