Sun-resistant and heat-insulating chemical fiber fabric and processing technology thereof

Abstract

The invention discloses a sunscreen heat-insulation chemical fiber fabric and a processing technology thereof, and relates to the technical field of textiles, and the technical scheme is characterized in that the surface of an outer layer is provided with a sunscreen coating, the outer layer comprises a plurality of sunscreen parts and a plurality of breathable parts which are arranged in a staggered mode in the weft direction of the outer layer, and the breathable parts are woven to form a plurality of breathable holes; a heat insulation layer is arranged between the inner layer and the outer layer, the outer layer abuts against the heat insulation layer, a plurality of supporting blocks and a plurality of moisture absorption blocks are woven on the two sides of the inner layer respectively, and the inner layer and the heat insulation layer are supported by the moisture absorption blocks to form a heat insulation cavity. A good shading effect is achieved through the sunscreen part made of polyester fibers, the ventilation effect on the two sides of the outer layer is improved through the multiple air holes, the air content in the fabric is increased through the heat insulation layer and the multiple heat insulation cavities, and air serves as a poor conductor of heat and can effectively reduce temperature transfer; sunlight entering from the air holes can be continuously refracted and diffused in the fabric, so that the intensity of the sunlight is reduced, and a good shading effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and more specifically, to a sun-protective and heat-insulating synthetic fiber fabric and its processing technology. Background Technology

[0002] The patent document with publication number CN219686780U discloses a sun-protective fabric, including a base layer, on which several grooves are woven to form a base layer, and several sun-protective layers are laminated on one side of the base layer where the grooves are set. The several sun-protective layers are distributed in a linear array along the length of the grooves, and gaps are formed between adjacent sun-protective layers. Several ventilation holes located under the sun-protective layers are opened at the bottom of the grooves.

[0003] The above solution improves the sun protection performance of the fabric by setting a sun protection layer to block ultraviolet rays from entering the breathable pores. There is a certain distance between the breathable pores and the sun protection layer, and there are also gaps between adjacent sun protection layers to ensure the breathability of the fabric. However, some gaps, grooves and breathable pores are interconnected, so the heat from the outside can directly pass through the fabric and come into contact with the skin. Although the sun protection and breathability effect is achieved, the heat insulation performance is not good. Users will feel hot when wearing it in summer, which can easily cause discomfort.

[0004] Therefore, it is necessary to design a fabric that can provide good heat insulation while ensuring sun protection and breathability, thereby improving the user's comfort when wearing it in summer. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sun-protective and heat-insulating chemical fiber fabric and its processing technology.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a sun-protective and heat-insulating chemical fiber fabric, comprising an inner layer and an outer layer, wherein the surface of the outer layer is provided with a sun-protective coating, the outer layer includes a plurality of sun-protective portions and a plurality of breathable portions arranged alternately along its weft direction, the breathable portions are woven to form a plurality of breathable holes, a heat-insulating layer is provided between the inner layer and the outer layer, the outer layer abuts against the heat-insulating layer, a plurality of support blocks and a plurality of moisture-absorbing blocks are respectively woven on both sides of the inner layer, and the inner layer and the heat-insulating layer are supported by the plurality of moisture-absorbing blocks to form a heat-insulating cavity.

[0007] Preferably, the width of the moisture-absorbing block and the support block is the same as the width of the breathable part, and a plurality of the moisture-absorbing blocks and a plurality of support blocks are staggered below a plurality of breathable parts along the warp direction of the inner layer.

[0008] A processing technology for a sun-protective and heat-insulating chemical fiber fabric, wherein the outer layer's weave structure is a combination of plain weave and perforated weave, and both the warp and weft threads of the outer layer are set as light-blocking yarns, which are made of twisted polyester fibers.

[0009] Preferably, the sunscreen coating is formed by padding an outer layer in a dispersion liquid, wherein the dispersion liquid is a mixture of nano-titanium dioxide and ultraviolet absorber in deionized water, the mass ratio of nano-titanium dioxide to ultraviolet absorber is set to 1:4, the particle size of the nano-titanium dioxide is between 25-35 nanometers, the thickness of the sunscreen coating is between 0.07-0.12 mm, the drying temperature of the outer layer after padding is between 100-110℃, and the drying time of the outer layer after padding is between 20-25 minutes.

[0010] Preferably, the heat insulation layer is formed by needle punching cut polyester profiled fibers, the surface of the polyester profiled fibers is covered with a heat insulation coating, the heat insulation coating is formed by impregnating the polyester profiled fibers in an aerogel solution, the drying temperature of the polyester profiled fibers after impregnation is between 120-130°C, the drying time of the polyester profiled fibers after impregnation is between 8-10 minutes, and the thickness of the heat insulation coating is between 0.05-0.08 mm.

[0011] Preferably, the outer layer and the heat insulation layer are hot-pressed together, the temperature at which the outer layer and the heat insulation layer are bonded together is between 180-200℃, the pressure at which the outer layer and the heat insulation layer are bonded together is between 0.25-0.45MPa, and the time at which the outer layer and the heat insulation layer are bonded together is between 2-4 minutes.

[0012] Preferably, the inner layer's weave structure is a warp-patterned weave, and the inner layer's weave yarn includes a cooling yarn and a moisture-wicking yarn. The cooling yarn serves as the ground weave yarn of the warp-patterned weave, and the moisture-wicking yarn serves as the patterned yarn of the warp-patterned weave. The cooling yarn is made by twisting modified polyester profiled fibers, and jade powder is added to the modified polyester profiled fibers. The amount of jade powder added is between 20-30%. The moisture-wicking yarn is made by twisting viscose fibers.

[0013] Preferably, the inner layer, the heat insulation layer, and the outer layer are sewn together at several support blocks. The inner layer, the heat insulation layer, and the outer layer are washed in a washing solution containing 3-5% fabric softener. The washing temperature of the inner layer, the heat insulation layer, and the outer layer is between 40-60°C, and the washing time is 15-30 minutes. The drying temperature of the inner layer, the heat insulation layer, and the outer layer after washing is between 80-90°C.

[0014] Preferred: The processing steps include; Step 1: Twist polyester fibers into light-blocking yarn and weave them into an outer layer. Pour the outer layer into a dispersion solution and then dry it to form a sun-protective coating. Step 2: The polyester profiled fiber is impregnated in the aerogel solution and then dried to form a heat insulation coating. The dried polyester profiled fiber is then cut and needle-punched to form a heat insulation layer. Step 3: Hot-press the outer layer and the insulation layer together; Step 4: After mixing jade powder into the polyester raw material, the mixture is spun into modified polyester profiled fibers. The modified polyester profiled fibers are then twisted into cool-feeling yarns, and viscose fibers are twisted into moisture-wicking yarns. The cool-feeling yarns and moisture-wicking yarns are then woven together to form the inner layer. Step 5: After sewing the inner layer, heat insulation layer and outer layer together, place them in a washing solution for washing and drying to produce this sun-protective and heat-insulating chemical fiber fabric.

[0015] In summary, the present invention has the following beneficial effects: Polyester fibers, due to their dense molecular structure, can effectively block sunlight penetration, resulting in a woven sun-protective layer with excellent light-blocking effect. Several vents improve air circulation on both sides of the outer layer. The heat insulation layer formed by needle-punching polyester profiled fibers has numerous irregular gaps, allowing an air layer to form between the inner and outer layers. Several heat insulation cavities increase the air content between the heat insulation layer and the inner layer. Air, as a poor conductor of heat, effectively reduces temperature transfer. Furthermore, the heat insulation effect of the heat insulation layer is further enhanced by the heat-insulating coating on the surface of the polyester profiled fibers, preventing sunlight from entering through the vents from penetrating. The sunlight is constantly refracted and diffused through the irregular gaps within the insulation layer, and then refracted and diffused again through the insulation cavity, thereby reducing the intensity of sunlight. The inner layer, made of modified polyester profiled fibers, has a good light-blocking effect, making it difficult for sunlight entering through the vents to penetrate the inner layer. By adding jade powder to the inner layer, it can generate a cooling sensation when worn against the skin. Several moisture-absorbing blocks can absorb the sweat produced by the skin in time and transfer it to several support blocks to contact the air for rapid moisture dissipation. This makes the fabric able to achieve good heat insulation, moisture absorption, moisture dissipation, and a cooling feel while ensuring sun protection and breathability. It is suitable for the production of summer clothing, improving its performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 Cross-sectional view of the present invention Figure 1 ; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 Cross-sectional view of the present invention Figure 2 ; Figure 5 This is a diagram of the weave structure of the inner layer in this invention; Figure 6 This is a flowchart of the processing of the present invention.

[0017] In the diagram: 1. Inner layer; 2. Outer layer; 201. Sunscreen section; 202. Breathable section; 3. Ventilation holes; 4. Contact block; 5. Moisture-absorbing block; 6. Insulation cavity; 7. Insulation layer. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Example: A sun-protective and heat-insulating synthetic fiber fabric, such as Figure 1 and Figure 2 As shown, the fabric includes an inner layer 1 and an outer layer 2. The outer layer 2 includes several sun-protective sections 201 and several breathable sections 202 arranged alternately along its weft direction. The breathable sections 202 are woven to form an array of breathable holes 3. The weaving structure of the outer layer 2 is a combination of plain weave and perforated weave. Both the warp and weft yarns of the outer layer 2 are light-blocking yarns. The multi-arm loom can change the fabric structure within a large range. By controlling the lifting and lowering movement and sequence of the heald frames, the combination of plain weave and perforated weave can be woven. The sun protection part 201 is integrally formed on the outer layer 2 using a plain weave. The breathable part 202 and its several vent holes 3 are integrally formed on the outer layer 2 using a perforated weave. The vent holes 3 ensure air circulation on both sides of the outer layer 2, thus achieving good breathability. The light-blocking yarn is made by twisting polyester fibers using a twisting machine. Due to its tight molecular structure, polyester fibers can effectively block the penetration of sunlight. The sun protection part 201, formed by the plain weave, is relatively tight, thus achieving a good light-blocking effect.

[0020] The outer layer 2 has a sun-protective coating, which is formed by impregnating the outer layer 2 in a dispersion. The outer layer 2 is immersed in the dispersion, which is a mixture of nano-titanium dioxide and a UV absorber in deionized water at a mass ratio of 1:4. The nano-titanium dioxide particle size is between 25-35 nanometers. The combination of nano-titanium dioxide and the UV absorber improves UV absorption efficiency and reduces UV penetration, thereby extending the lifespan of the sun-protective coating and enhancing its protective effect on the outer layer 2. Maintaining a nano-titanium dioxide particle size of 25-35 nanometers helps form a transparent coating without significantly affecting the appearance of the coated material, making it suitable for applications requiring transparency. Excess dispersion is removed by the squeezing action of the rollers. This process allows the textile to achieve a roll-over rate of 50-60%, thereby controlling the thickness of the sunscreen coating after molding to be between 0.07-0.12 mm. This thickness range ensures the sunscreen coating's effectiveness while preventing the coating from being too thick and affecting the fabric's feel and breathability. The drying temperature after the outer layer 2 is rolled is between 100-110℃, and the drying time is between 20-25 minutes, allowing the coating to dry fully, improving its adhesion and durability, and enabling the dispersion to firmly adhere to the surface of the outer layer 2, thus forming the desired sunscreen coating. The ultraviolet absorber is a benzoylmethane compound, which, when mixed with nano-titanium dioxide, forms a sunscreen coating with good ultraviolet scattering and absorption capabilities, effectively blocking UVA and UVB rays, thereby enhancing the sunscreen effect of the outer layer 2.

[0021] like Figures 1-4 As shown, a heat insulation layer 7 is provided between the inner layer 1 and the outer layer 2. The heat insulation layer 7 is made of cut polyester profiled fibers needle-punched together. The loose polyester profiled fiber raw materials are needle-punched and entangled to form a fiber web, which forms the heat insulation layer 7. Since the heat insulation layer 7 is made of non-woven fabric, there are a lot of disordered gaps inside. An air layer can be formed between the inner layer 1 and the outer layer 2 through the heat insulation layer 7. Several support blocks and several moisture-absorbing blocks 5 are woven on both sides of the inner layer 1. The inner layer 1 and the heat insulation layer 7 are supported by several moisture-absorbing blocks 5 to form several heat insulation cavities 6. The heat insulation layer 7 and several heat insulation cavities 6 increase the air content between the inner layer 1 and the outer layer 2. Air, as a poor conductor of heat, can effectively reduce temperature transfer, thereby obtaining a good heat insulation effect.

[0022] The polyester profiled fibers used to make insulation layer 7 are coated with an insulation coating. This coating is formed by impregnating the polyester profiled fibers in an aerogel solution. The drying temperature after impregnation is between 120-130℃, and the drying time is between 8-10 minutes. The thickness of the insulation coating is between 0.05-0.08 mm. Due to the thinness of the insulation coating, the drying temperature and time can be appropriately reduced, making the processing more efficient and reducing energy consumption. Aerogel has extremely low thermal conductivity, effectively preventing heat conduction and further enhancing the insulation effect of insulation layer 7. Outer layer 2 and insulation layer 7 are bonded together by hot pressing. The bonding temperature between outer layer 2 and insulation layer 7 is between 180-200℃. The pressure of the composite layer 7 is between 0.25-0.45 MPa. Within this temperature range, the distance between molecules increases, allowing the molecules of the outer layer 2 and the heat insulation layer 7 to better penetrate and diffuse into each other, thereby improving the bonding force between the outer layer 2 and the heat insulation layer 7. This makes the composite outer layer 2 and the heat insulation layer 7 more robust and less prone to delamination or peeling. Increasing the temperature during the composite process accelerates the softening and fusion of the outer layer 2 and the heat insulation layer 7. Due to the increased temperature, the composite time of the outer layer 2 and the heat insulation layer 7 is 2-4 minutes, reducing the waiting time during the composite process and thus improving production efficiency. Several sun protection parts 201 are provided with hot melt adhesive on the side near the heat insulation layer 7, so that the heat insulation layer 7 and several sun protection parts 201 are tightly bonded together by the hot melt adhesive, while ensuring the breathability of the breathable parts 202.

[0023] like Figures 2-5 As shown, the inner layer 1 has a warp-patterned weave structure. The yarns in the inner layer 1 include cooling yarns and moisture-wicking yarns. The cooling yarns serve as the ground yarns of the warp-patterned weave structure, and the moisture-wicking yarns serve as the starting yarns of the warp-patterned weave structure. Several support blocks and moisture-wicking blocks 5 are formed using the starting yarns. The cooling yarns are formed by twisting modified polyester profiled fibers using a twisting machine. The modified polyester profiled fibers are formed by adding jade powder to polyester raw materials and then spinning them. The amount of jade powder added is between 20-30%. Jade has certain thermal conductivity and is made into nano-powder for use as a base. Adding it to the fiber allows the inner layer 1 to generate a cooling sensation when in contact with the skin by utilizing its characteristics of fast heat transfer and slow heat absorption. Increasing the amount of jade powder added can enhance the heat conduction effect and improve the cooling sensation of the fabric when worn. The moisture-absorbing yarn is made by twisting viscose fibers through a twisting machine. Viscose fibers have good moisture absorption and moisture dissipation properties, so that the moisture-absorbing block 5 can absorb the sweat produced by the skin in time when in contact with the skin and transfer it to the contact block 4 to contact with the air for rapid moisture dissipation. The water vapor formed by moisture dissipation can be dissipated into the outside air through the heat insulation layer 7 and the breathable part 202.

[0024] like Figures 1-4As shown, the inner layer 1, the heat insulation layer 7, and the outer layer 2 are sewn together at several support blocks. Sunlight entering through the ventilation holes 3 is continuously refracted and diffused through the irregular gaps in the heat insulation layer 7. Sunlight passing through the heat insulation layer 7 is refracted and diffused again in the heat insulation cavity 6, thereby reducing the intensity of sunlight. The width of the moisture-absorbing blocks 5 and the support blocks is the same as the width of the ventilation section 202. Several moisture-absorbing blocks 5 and several support blocks are staggered below several ventilation sections 202 along the warp direction of the inner layer 1. The moisture-absorbing blocks 5 and several support blocks increase the thickness of the inner layer 1 below the ventilation section 202, thereby enhancing the light-blocking effect of the inner layer 1 below the ventilation section 202. The inner layer 1, made of modified polyester profiled fibers, has a certain degree of light-blocking properties, making it difficult for sunlight entering the fabric through the ventilation holes 3 to penetrate the inner layer 1, ensuring a good sun protection effect. The inner layer 1, the heat insulation layer 7, and the outer layer 2... After sewing, the fabric is washed in a washing solution and then dried to create a sun-protective and heat-insulating chemical fiber fabric. The washing solution contains 3-5% silicone softener. The washing temperature for the inner layer 1, the heat insulation layer 7, and the outer layer 2 is between 40-60℃. This washing temperature increases the solubility of stains in water and also causes the fabric fibers to expand, making it easier for stains to detach from the fiber surface, thus improving the cleaning effect. The washing time for the inner layer 1, the heat insulation layer 7, and the outer layer 2 is 15-30 minutes. Washing removes impurities from the fabric and provides a soft and smooth feel, further improving the comfort of wearing the fabric. The drying temperature for the inner layer 1, the heat insulation layer 7, and the outer layer 2 after washing is between 80-90℃. At the same time, the airflow in the drying oven is accelerated, ensuring the drying effect even after the drying temperature is lowered, while also ensuring the stability of the fabric composite and coating.

[0025] like Figure 6 As shown, the processing steps include: Step 1: Twist polyester fibers into light-blocking yarn and weave them to form outer layer 2. Impregnate outer layer 2 in dispersion liquid and then dry it to form a sun-protective coating. Step 2: The polyester profiled fiber is impregnated in the aerogel solution and then dried to form a heat insulation coating. The dried polyester profiled fiber is then cut and needle-punched to form a heat insulation layer 7. Step 3: Hot-press the outer layer 2 and the insulation layer 7 together; Step 4: After mixing jade powder into the polyester raw material, spin it to form modified polyester profiled fiber. Twist the modified polyester profiled fiber into cool-feeling yarn and twist the viscose fiber into moisture-absorbing yarn. Then weave the cool-feeling yarn and moisture-absorbing yarn to form inner layer 1. Step 5: After sewing and fixing the inner layer 1, the heat insulation layer 7 and the outer layer 2 together, place them in a washing solution for washing and drying to produce this kind of sun-proof and heat-insulating chemical fiber fabric.

[0026] It employs common textile processing equipment and procedures in this field, making it relatively easy to operate and suitable for large-scale industrial production.

[0027] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A sun-protective and heat-insulating synthetic fiber fabric, comprising an inner layer (1) and an outer layer (2), characterized in that: The outer layer (2) has a sun-protective coating on its surface. The outer layer (2) includes a plurality of sun-protective parts (201) and a plurality of breathable parts (202) arranged alternately along its weft direction. The breathable parts (202) are woven to form a plurality of breathable holes (3). A heat insulation layer (7) is provided between the inner layer (1) and the outer layer (2). The outer layer (2) abuts against the heat insulation layer (7). A plurality of support blocks and a plurality of moisture-absorbing blocks (5) are woven on both sides of the inner layer (1). The inner layer (1) and the heat insulation layer (7) are supported by the plurality of moisture-absorbing blocks (5) to form a heat insulation cavity (6).

2. The sun-protective and heat-insulating chemical fiber fabric according to claim 1, characterized in that: The width of the moisture-absorbing block (5) and the support block is the same as the width of the breathable part (202). Several moisture-absorbing blocks (5) and several support blocks are staggered below several breathable parts (202) along the warp direction of the inner layer (1).

3. A processing method for a sun-protective and heat-insulating synthetic fiber fabric, used to process the sun-protective and heat-insulating synthetic fiber fabric according to any one of claims 1-2, characterized in that: The outer layer (2) is woven with a combination of plain weave and openwork weave. The warp and weft of the outer layer (2) are both light-blocking yarns, which are made of twisted polyester fibers.

4. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 3, characterized in that: The sunscreen coating is formed by padding the outer layer (2) in a dispersion liquid, which is a mixture of nano-titanium dioxide and ultraviolet absorber in deionized water. The mass ratio of nano-titanium dioxide to ultraviolet absorber is set to 1:

4. The particle size of the nano-titanium dioxide is between 25-35 nanometers. The thickness of the sunscreen coating is between 0.07-0.12 mm. The drying temperature of the outer layer (2) after padding is between 100-110℃. The drying time of the outer layer (2) after padding is between 20-25 minutes.

5. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 4, characterized in that: The heat insulation layer (7) is formed by needle punching cut polyester profiled fibers. The surface of the polyester profiled fibers is covered with a heat insulation coating. The heat insulation coating is formed by impregnating the polyester profiled fibers in an aerogel solution. The drying temperature of the polyester profiled fibers after impregnation is between 120-130°C, the drying time of the polyester profiled fibers after impregnation is between 8-10 minutes, and the thickness of the heat insulation coating is between 0.05-0.08 mm.

6. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 5, characterized in that: the outer layer (2) and the heat insulation layer (7) are hot-pressed together, the temperature of the outer layer (2) and the heat insulation layer (7) being combined is between 180-200℃, the pressure of the outer layer (2) and the heat insulation layer (7) being combined is between 0.25-0.45MPa, and the time of the outer layer (2) and the heat insulation layer (7) being combined is between 2-4 minutes.

7. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 6, characterized in that: The inner layer (1) is woven with a warp-patterned weave. The yarns of the inner layer (1) include a cooling yarn and a moisture-wicking yarn. The cooling yarn is the ground yarn of the warp-patterned weave, and the moisture-wicking yarn is the patterned yarn of the warp-patterned weave. The cooling yarn is made by twisting modified polyester profiled fibers. Jade powder is added to the modified polyester profiled fibers. The amount of jade powder added is between 20-30%. The moisture-wicking yarn is made by twisting viscose fibers.

8. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 7, characterized in that: The inner layer (1), the heat insulation layer (7) and the outer layer (2) are sewn and fixed at several support blocks. The inner layer (1), the heat insulation layer (7) and the outer layer (2) are placed in a washing solution for washing. The washing solution contains 3-5% fabric softener. The washing temperature of the inner layer (1), the heat insulation layer (7) and the outer layer (2) is between 40-60°C. The washing time of the inner layer (1), the heat insulation layer (7) and the outer layer (2) is 15-30 minutes. The drying temperature of the inner layer (1), the heat insulation layer (7) and the outer layer (2) after washing is between 80-90°C.

9. The processing technology of a sun-protective and heat-insulating chemical fiber fabric according to claim 8, characterized in that: The processing steps include: Step 1: Twist polyester fibers into light-blocking yarn and weave them into an outer layer (2). Pour the outer layer (2) into a dispersion liquid and then dry it to form a sunscreen coating. Step 2: The polyester profiled fiber is immersed in the aerogel solution and then dried to form a heat insulation coating. The dried polyester profiled fiber is cut and needle-punched to form a heat insulation layer (7). Step 3: Hot-press the outer layer (2) and the insulation layer (7) together; Step 4: After mixing jade powder into the polyester raw material, spin it to form modified polyester profiled fiber. Twist the modified polyester profiled fiber into cool yarn and twist the viscose fiber into moisture-absorbing yarn. Then weave the cool yarn and moisture-absorbing yarn to form the inner layer (1). Step 5: After sewing and fixing the inner layer (1) with the heat insulation layer (7) and the outer layer (2), place it in a washing solution for washing and drying to make a sun-proof and heat-insulating chemical fiber fabric.

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