Protective outdoor umbrella cloth

Abstract

To provide a protective outdoor umbrella cloth having excellent ultraviolet protection effect, highly efficient heat conductivity, cool feeling, continuous waterproof and hydrophobic effects, and environmental protection performance, and also having a simple structure and high stability. [Solution] A protective outdoor umbrella cloth comprises a hydrophobic coating 1, a base fabric layer 2, and a waterproof coating 3, with the hydrophobic coating and waterproof coating respectively coated on the upper and lower surfaces of the base fabric layer, and the waterproof coated surface of the base fabric layer connected to a framework. The base fabric layer includes an outer layer 21, a middle layer 22, and an inner layer 23, with the hydrophobic coating coated on the surface of the outer layer and the waterproof coating coated on the surface of the inner layer.

Description

[Technical Field]

[0001] The present invention belongs to the technical field of protective equipment, and more particularly to a protective outdoor umbrella cloth. [Background technology]

[0002] As people's demand for health and comfort increases, umbrella cloth materials with sun protection and waterproof functions have gradually become important products in the market, especially in the demand for sun protection under hot outdoor weather. The UV protection performance and heat insulation effect of umbrella cloth fabrics have attracted great attention, and umbrella cloths with excellent sun protection and waterproof functions have become a popular trend.

[0003] Currently, most commercially available sunscreen umbrella fabrics improve their sun protection by dyeing the fabric, applying UV-blocking coatings, or layering multiple layers of material, but these methods have some obvious drawbacks.

[0004] 1. Unstable UV blocking effect: Traditional sunscreen umbrella cloth mainly relies on the UV-blocking coating applied to the surface to block UV rays. When the coating is exposed to sunlight or rain for a long period of time, it deteriorates and peels off, gradually reducing the UV blocking effect.

[0005] 2. Low thermal conductivity of fabric: Most sunscreen umbrella cloths are made of polyester fiber material, which has a certain degree of weather resistance and lightness, but has low thermal conductivity. Therefore, the umbrella cloth is prone to accumulating heat in hot weather, raising the temperature of the umbrella cloth and making the user feel stuffy. Especially when the umbrella is closed, the heat will be trapped in the umbrella cloth, making it relatively uncomfortable to touch.

[0006] 3. Lack of environmental protection function: Traditional sunscreen fabrics usually enhance their UV protection function through multiple dyeing and coating processes, which not only increases production costs but also aggravates industrial pollution and does not meet the current requirements for low-carbon environmental protection.

[0007] 4. Lack of hydrophobicity and waterproofness: Most of the existing umbrella fabrics have a single coating treatment to provide water resistance to the surface, which is not effective. Rainwater is easily attached to the umbrella fabric, making it difficult for the umbrella fabric to dry quickly when wet, which affects the convenience of use and service life.

[0008] Therefore, in order to solve the problems of the conventional umbrella cloth such as unstable UV blocking effect, low thermal conductivity of the fabric, lack of environmental protection performance, and insufficient hydrophobicity and waterproofness, it is necessary to improve the structure of the umbrella cloth to solve the current technical problems. Summary of the Invention [Problem to be solved by the invention]

[0009] The purpose of this invention is to provide a protective outdoor umbrella cloth with a multi-layer umbrella cloth that can provide excellent UV protection without relying on a coating layer, and has good hydrophobicity, waterproofness, and better thermal conductivity, and has a compact structure and stable performance, thereby improving the comfort, environmental protection, and service life of the umbrella cloth. [Means for solving the problem]

[0010] To achieve the above objectives, the present invention employs the following technical means: a protective outdoor umbrella cloth comprises a hydrophobic coating, a base fabric layer, and a waterproof coating, the hydrophobic coating and the waterproof coating are respectively coated on the upper and lower surfaces of the base fabric layer, and the waterproof coated surface of the base fabric layer is connected to a framework.

[0011] To better realize the present invention, the base fabric layer includes an outer layer, a middle layer, and an inner layer, and the hydrophobic coating is coated on the surface of the outer layer, and the waterproof coating is coated on the surface of the inner layer.

[0012] To better realize the present invention, both the outer layer and the inner layer are made of low-elasticity quenched nylon yarn.

[0013] To better realize the present invention, the middle layer is made of black low-elasticity nylon spun yarn.

[0014] To better realize the present invention, the outer layer, the middle layer and the inner layer are all attached with nano-TiO2.

[0015] To better realize the present invention, the base fabric layer is a woven fabric structure formed by weaving the outer and inner layers as warps and the middle layer as wefts together on a loom.

[0016] To better realize the present invention, the hydrophobic coating is a triple-proof finish.

[0017] To better realize the present invention, the waterproof coating is a transparent AC adhesive coating. [Effects of the Invention]

[0018] 1. Excellent UV protection: The umbrella fabric has a multi-layer structure, and nano-TiO2 titanium dioxide is added to the outer and inner layers of the yarn. This ingredient is evenly distributed on the surface and inside of the yarn, effectively reflecting, scattering, and absorbing UV rays, creating a stable UV protection function. In particular, the black polyamide fiber layer in the middle layer is dyed with a fade-resistant masterbatch dye to further improve its UV protection effect, giving the umbrella fabric an ultraviolet protection factor (UPF) of over 100, effectively blocking UV rays.

[0019] 2. High thermal conductivity and cool touch: The base fabric is made mainly of nylon spun yarn. Compared with traditional polyester fibers, nylon spun yarn has higher thermal conductivity and dissipates heat faster, allowing the umbrella cloth to cool faster even in high temperatures. This allows the umbrella cloth to dissipate heat faster in hot outdoor environments, resulting in a cooler touch and a more comfortable use experience.

[0020] 3. Durable waterproof and hydrophobic properties: The outer layer is coated with a hydrophobic coating, which creates a triple-layer finish (water-repellent, oil-repellent, and stain-resistant) that causes water droplets to bead up on the fabric surface and slide off quickly. The inner layer is coated with a waterproof coating that prevents water from penetrating the fabric. This design ensures the umbrella fabric's excellent waterproof and hydrophobic properties, allowing it to quickly drain water and stay dry even on rainy days.

[0021] 4. Environmental protection performance: The black polyamide fiber middle layer is dyed by directly adding masterbatch during the spinning process, eliminating the traditional subsequent dyeing process. This not only reduces pollution during the dyeing process, but also ensures the color of the umbrella fabric is stable for a long time, helping to reduce industrial pollution and meeting environmental protection requirements.

[0022] 5. Simple structure and high stability: The base fabric layer adopts a woven structure in which the warp and weft threads are tightly sandwiched together, so that the middle anti-UV layer has a highly intimate protective effect and is not easy to peel off or fall off, ensuring the reliability and durability of the umbrella fabric material in long-term use.

[0023] 6. Strong elasticity, excellent abrasion resistance, and long service life: Polyamide fiber is used as the spinning yarn for the base fabric layer, taking advantage of its high strength and excellent elasticity. Even when the umbrella cloth is repeatedly opened and closed, it can be tightened and stretched repeatedly, preventing it from loosening or sagging, thereby extending the service life of the umbrella cloth. Secondly, polyamide fiber has the highest abrasion resistance of all textile fibers, and is more resistant to repeated deformation and fatigue than other chemical fibers. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a schematic diagram of the cross-sectional structure of the umbrella cloth of the present invention. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0025] Example 1 As shown in Figure 1, a protective outdoor umbrella fabric comprises a hydrophobic coating 1, a base fabric layer 2, and a waterproof coating 3. The hydrophobic coating 1 and waterproof coating 3 are applied to the top and bottom surfaces of the base fabric layer 2, respectively, and the waterproof coating 3-coated surface of the base fabric layer 2 is connected to the umbrella framework. A special process creates a dense interlayer between the hydrophobic coating 1 and the base fabric layer 2, providing excellent hydrophobic properties. When rainwater falls on the surface of the base fabric layer 2, it forms small droplets or slides directly off the surface, preventing the base fabric layer 2 from absorbing the water and enhancing the hydrophobic effect of the umbrella fabric. The waterproof coating 3 is bonded to the underside of the base fabric layer 2 to form one or more layers of film, preventing rainwater penetration and providing excellent cleanability, strong adhesion, and abrasion resistance.

[0026] The base fabric layer 2 includes an outer layer 21, a middle layer 22, and an inner layer 23, and the hydrophobic coating 1 is coated on the surface of the outer layer 21, and the waterproof coating 3 is coated on the surface of the inner layer 23.

[0027] Here, both the outer layer 21 and the inner layer 23 are made from low-elasticity polyamide fiber yarn, and nano-TiO2 (titanium dioxide) is added to the spinning solution. After spinning, the nano-TiO2 is uniformly distributed on the surface and inside of the fiber, reducing the brightness of the yarn, quenching the yarn, and blocking the ultraviolet factors in the light, forming low-elasticity quenching nylon yarn with excellent UV protection properties of 20D to 75D (D, denier: a method of expressing the fineness of chemical fiber, representing the weight (g) of 9,000 meters of spun yarn at the official moisture regain). Different colors of yarn can be spun or white yarn can be dyed to produce umbrella fabrics of different colors.

[0028] The black masterbatch is a deep-colored pigment composed of a black pigment and a carrier, offering excellent hiding power and coloring strength, providing a uniform and stable color. The middle layer 22 is a black low-elasticity nylon yarn spun from a low-elasticity polyamide fiber yarn in combination with the black masterbatch. By adding nano-TiO2 to the spinning solution, the nano-TiO2 is uniformly distributed on the surface and inside of the fiber after spinning, resulting in excellent UV protection. The black yarn's UV-blocking middle layer 22 effectively blocks light and prevents direct light irradiation on the inner layer 23, enabling the sunscreen fabric to achieve a UV protection rating of >100, effectively blocking UV transmission and achieving sunscreen performance.

[0029] Polyamide fiber has high strength and excellent elasticity, so even when umbrella cloths are repeatedly opened and closed, they can be tightened and contracted repeatedly, preventing them from loosening or sagging, thereby extending the service life of the umbrella cloth. Secondly, polyamide fiber has the highest abrasion resistance of all textile fibers, is more resistant to repeated deformation and fatigue than other chemical fibers, has good moisture absorption, and can be directly dyed with acid dyes and other dyes.

[0030] The black yarn of the middle layer 22 is directly woven into the fabric to form black UV-resistant yarn, which does not require dyeing the yarn again. This yarn remains black and does not fade, maintaining the UV-resistant and light-blocking functions of the yarn, providing long-term sun protection. Secondary dyeing is also not required, which greatly reduces industrial pollution.

[0031] The base fabric layer 2 has a sandwich structure in which the warp and weft are woven together. "Warp and weft are woven together" means that, when manufacturing the base fabric layer 2, the inner layer 23 and outer layer 21 are used as warps, and the middle layer 22, a low-elasticity polyamide fiber yarn, is used as the weft, forming a plain weave in which the warps alternately rise and fall, weaving them together directly on the loom so that the warps are sandwiched between the top and bottom and the weft is sandwiched in the middle. The low-elasticity polyamide fiber yarn knit in the middle layer 22 shrinks in the middle, forming a stable UV-blocking layer between the bottom and top layers. This simple structure, high-density and compact, will not fall off even after long-term use, and provides stable and reliable performance.

[0032] The warp and weft of the base fabric layer 2 are both woven with nylon spun yarn, which has a moisture regain of 4.18% and a water content of 4.02%. Due to its high moisture regain and water content, nylon filament's thermal conductivity is 0.224-0.337 W / (m·K), compared with only 0.084 W / (m·K) for polyester fiber. This means that nylon filament is three times more effective at absorbing heat from the body than polyester. Because nylon has a high heat transfer rate when touched, the human body perceives nylon as cool, meaning fabrics made with nylon fiber have a higher cooling coefficient and feel cooler to the touch. When using a sunshade umbrella outdoors in summer, the fabric's fast heat conduction rapidly reduces the temperature of the umbrella fabric. When the umbrella is closed, it immediately feels cool to the touch, enhancing comfort.

[0033] After the base fabric layer 2 is woven, a hydrophobic coating 1 is applied to the surface of the outer layer 21 of the base fabric layer 2, and a waterproof layer is applied to the surface of the inner layer 23 of the base fabric layer 2. The surface hydrophobic coating 1 employs a triple-waterproof finish. Triple-waterproof finishes are chemical finishes used to treat textiles to impart waterproof, oil-resistant, and stain-resistant properties. These finishes typically consist of various surfactants, wax compounds, and other additives. They penetrate the interior of the fibers, modifying the surface properties of the fibers to achieve waterproof, oil-resistant, and stain-resistant effects. Triple-waterproof finishes are fluorine compounds that effectively reduce the surface tension of the textile, preventing water and oil from expanding or penetrating the surface, similar to the water flow and non-stick properties of a lotus leaf. A special process forms a dense junction between the hydrophobic coating 1 and the high-density plain-woven base fabric layer 2, providing excellent hydrophobic properties and effectively improving the hydrophobic properties of the umbrella fabric surface.

[0034] The waterproof layer is a transparent AC adhesive coating, a polymeric compound evenly applied to the surface of the fabric, on the bottom of the base fabric layer 2. This provides excellent waterproofing, good durability, strong adhesion, and resistance to wear.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and does not limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention. [Explanation of symbols]

[0036] 1 hydrophobic coating, 2 base fabric layer, 21 outer layer, 22 middle layer, 23 inner layer, 3 waterproof coating

Claims

1. A protective outdoor umbrella cloth comprising a hydrophobic coating (1), a base fabric layer (2), and a waterproof coating (3), wherein the hydrophobic coating (1) and the waterproof coating (3) are respectively coated on the upper and lower surfaces of the base fabric layer (2), and the surface of the base fabric layer (2) coated with the waterproof coating (3) is connected to a framework.

2. The protective outdoor umbrella cloth according to claim 1, characterized in that the base fabric layer (2) comprises an outer layer (21), a middle layer (22) and an inner layer (23), the hydrophobic coating (1) is coated on the surface of the outer layer (21), and the waterproof coating (3) is coated on the surface of the inner layer (23).

3. The protective outdoor umbrella cloth according to claim 2, characterized in that the outer layer (21) and the inner layer (23) are both made of low-elasticity quenched nylon spun yarn.

4. The protective outdoor umbrella fabric according to claim 3, characterized in that the intermediate layer (22) is made of black low-elasticity nylon spun yarn.

5. The protective outdoor umbrella cloth according to claim 4, characterized in that the outer layer (21), the middle layer (22), and the inner layer (23) are all attached with nano-TiO2.

6. The protective outdoor umbrella cloth according to claim 2, characterized in that the base fabric layer (2) is a woven fabric structure formed by weaving the outer layer (21) and the inner layer (23) as warp threads and the middle layer (22) as weft threads together on a loom.

7. 2. The protective outdoor umbrella fabric according to claim 1, characterized in that the hydrophobic coating (1) is a triple-proof finish.

8. 2. The protective outdoor umbrella cloth according to claim 1, characterized in that the waterproof coating (3) is a transparent AC adhesive coating.

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