Dual-sided fluorine-free water-repellent multifunctional processed fabric and its manufacturing method

Abstract

A water-resistant, washable, double-sided fluorine-free, water-repellent multifunctional processed fabric and its manufacturing method are disclosed. The process includes providing a base fabric, pretreatment, dyeing, and post-treatment. First, the base fabric undergoes shrinking, relaxation, dyeing, washing, setting, and acid washing according to its weave structure. After two washings, the base fabric is immersed in an acid washing solution containing a color-fixing agent and acetic acid, with the pH value between 4.5 and 5.5. Finally, in the setting process, a rain-resistant agent and a water-repellent agent are mixed and then used to soak the base fabric. After pressure absorption treatment, a multifunctional processed fabric with double-sided fluorine-free water-repellent properties is obtained. This solves the problem of fabrics being easily wetted by rain and difficult to clean, resulting in a water-resistant, washable, moisture-proof, and breathable multifunctional processed fabric that significantly reduces material and manufacturing costs.

Description

[Technical Field]

[0001] This invention relates to a method for manufacturing a processed fabric, particularly a method that involves immersing the base fabric in an acid-washing and fixing agent consisting of a mixture of a color-fixing agent and acetic acid during the dyeing process, and then immersing it in a water-repellent mixture during the setting process, thereby obtaining a multifunctional processed fabric that is water-resistant, washable, and fluorine-free. [Previous Technology]

[0002] In recent years, with the rapid development of materials science, synthetic fibers can exhibit various special properties after processing, such as high elasticity, antistatic properties, moisture absorption and perspiration wicking, UV resistance, far-infrared radiation, electromagnetic wave resistance, negative ions, antibacterial and deodorizing properties, etc. Textiles with these special properties can meet the needs of different consumer groups. Therefore, many manufacturers have invested in the research and development market of functional textiles, and are committed to making textiles have more innovative functions.

[0003] Among them, many functional textiles are made by crushing related materials to form nanoparticles, and then adding these nanoparticles into the original yarn to give the textiles special functions. This method can not only give textiles new properties, but also increase functionality while maintaining the original texture and feel of the textiles.

[0004] In addition, in order to improve the efficiency and results of the research and development of functional textiles, manufacturers are focusing a lot of attention on the functionality of products, rather than just the design of appearance. By strengthening materials science research and gaining a deeper understanding of the properties and applications of materials, they can better utilize the properties of materials to develop textiles with more functions. The market potential for the research and development of functional textiles is huge, but to realize its greatest value, manufacturers need to continuously innovate and conduct comprehensive exploration and experimentation from the aspects of materials, technology and market demand. It is believed that with the continuous progress of science and technology and the continuous changes in the market, functional textiles will be more widely used and developed in the future.

[0005] With the evolution of the times and the advancement of technology, fabrics have become an indispensable part of people's daily lives. From clothing to furniture, vehicle interiors, and many other fields, the application range of fabrics is very wide. However, traditional fabrics are often unable to withstand rain or other liquids, which brings inconvenience to people's lives and use. Therefore, developing a fabric processing method with breathable, water-repellent, and moisture-wicking functions is of great significance to many people. With the improvement of living standards and people's pursuit of quality of life, the requirements for fabrics are also constantly increasing. Although traditional fabrics are soft and comfortable, they perform poorly in humid environments, easily becoming damp and seeping water, even leading to stuffiness and discomfort. Therefore, developing a fabric processing method with breathable, water-repellent, and moisture-wicking functions has become an urgent task for textile manufacturers.

[0006] Breathability is one of the important properties of fabrics. Breathable fabrics allow air and water vapor to pass through freely, maintaining the comfort of the body. Traditional fabrics, due to the tight arrangement of fibers, have poor breathability and are prone to causing stuffiness and a feeling of not being breathable. Therefore, it is very necessary to improve the breathability of fabrics through technological means. Water-repellent function is an important direction in modern fabric processing. Fabrics with water-repellent function can effectively resist the penetration of rainwater or other liquids, keeping the fabric surface dry. This not only protects the fabric itself and extends its service life, but also keeps people comfortable in humid environments. However, traditional waterproofing methods often use fluoride-containing agents, which have certain impacts on the environment and human health. Therefore, there is an urgent need to develop a harmless water-repellent treatment method.

[0007] Therefore, developing a fabric processing method that is breathable, water-repellent, moisture-permeable, and washable has become a common goal for many textile-related scientific and technological researchers and industry professionals. Consequently, some industry professionals have utilized micro-nano technology of polymer materials to form a fine porous membrane on the fabric surface. This membrane maintains the fabric's breathability while effectively preventing liquid penetration. Simultaneously, by controlling the fabric structure and adding special functional agents, moisture permeability can be achieved, allowing wearers to remain dry and comfortable in humid environments. However, porous membrane technology uses a lamination method to attach the membrane to a single surface of the fabric, and its effectiveness is only limited to the lamination surface. Most membrane materials are made from plastic raw materials that are not easy to recycle. Clothing fabrics made from them are not easy to recycle and reuse, and may even cause environmental pollution and high carbon emissions. Such materials and processes require a relatively large amount of production time and cost. Moreover, their microporous membranes are easy to fall off and be damaged after washing, and are not water-resistant. Furthermore, the surface of the membrane material will have a plastic feel when touched or in contact with the skin, which can also limit the appearance design. In view of this, the ability to effectively and quickly mass-produce a water-resistant, fluorine-free, highly water-repellent, moisture-proof and breathable fabric that can maintain environmental protection, carbon reduction and fabric texture while significantly reducing material and production costs has become a major issue for fiber textile processors. [Summary of the Invention]

[0008] Therefore, with a spirit of meticulous research and creation, the inventor, based on the above technical problems, began to research and develop, and with many years of professional experience and practical insights, carefully researched and innovated, and then proposed this invention, in order to improve the advantages of the process of this invention and improve the shortcomings of the conventional method.

[0009] The main objective of this invention is to provide a multifunctional fabric with improved manufacturing process, featuring a water-resistant, double-sided, water-repellent, and breathable design that is fluorine-free.

[0010] To achieve the above objective, the water-resistant, double-sided, fluorine-free, water-repellent multifunctional processed fabric of the present invention includes a base fabric layer and a rain-resistant and water-repellent composite layer. The base fabric layer is woven from a plurality of weft yarn units and a plurality of warp yarn units that are adjacent to each other and overlap each other, so that the base fabric layer has a first surface and a second surface opposite to the first surface. The rain-resistant and water-repellent composite layer is disposed above the first surface and the second surface of the base fabric layer. The rain-resistant and water-repellent composite layer includes at least 30-60 WT of water-repellent agent and 40-70 WT of rain-resistant agent. The water-repellent agent includes at least 30-85 parts by weight of water-repellent agent and 15-70 parts by weight of crosslinking agent. The rain-resistant agent includes at least 20-30 parts by weight of paraffin emulsion, 1-5 parts by weight of fatty alcohol polyoxyethylene ether and 65-79 parts by weight of water.

[0011] Another objective of the present invention is to provide a method for manufacturing a multifunctional processed fabric that is washable, double-sided, fluorine-free, and water-repellent, thereby improving the water-repellent and breathable properties of the fabric through a manufacturing process.

[0012] Another object of the present invention is to provide a multifunctional processed fabric and a method thereof that improves the effectiveness of water-repellent and rain-resistant agents in adhering to the fabric simultaneously through an improved process, thereby forming a high-quality, washable, double-sided fluorine-free water-repellent fabric.

[0013] To achieve the above objectives, the present invention provides a method for manufacturing a water-resistant, double-sided, fluorine-free, water-repellent, multifunctional processed fabric. In the material preparation stage, a base fabric is first prepared. This base fabric is woven from multiple weft yarn units and multiple warp yarn units, making the base fabric structurally stronger and able to withstand more tension and pressure. Next is the pretreatment step, which involves shrinking, relaxing, semi-bleaching, and pre-setting the base fabric. These processes make the fiber structure of the base fabric more uniform, thereby improving the effect of subsequent dyeing and processing. The dyeing process is a key step in the entire manufacturing process. Dyeing is performed first, followed by washing, setting, secondary washing, and acid washing. It is particularly noteworthy that a fixing agent and acetic acid are added to the acid washing fixing agent and mixed in proportion. The base fabric is then immersed in the acid washing fixing agent at a temperature between 75 and 85°C to ensure that its pH value is maintained between 4.5 and 5.5.

[0014] Finally, the post-processing step involves drying the base fabric and then performing a setting process. During this setting process, 30-60 WT of rain repellent agent and 40-70 WT of water repellent agent are mixed. The base fabric is then immersed in this mixture and subjected to pressure suction treatment using a pressure suction device. This process gives the base fabric double-sided fluorine-free water-repellent properties. This processing method not only ensures the comfort and softness of the fabric but also improves its durability and waterproof performance in humid environments. [Simplified Explanation of the Diagram]

[0015] Figure 1: Schematic diagram of the multifunctional processed fabric of the present invention, which is water-resistant, washable, double-sided fluorine-free, and water-repellent.

[0015] Figure 2: Flowchart of the manufacturing method of the multifunctional processed fabric with water-resistant, washable, double-sided fluorine-free, and water-repellent properties of the present invention.

Implementation Method

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail in conjunction with specific embodiments. However, the scope of the above-described invention is not limited to the following embodiments. Without departing from the above-described technical concept of the present invention, various substitutions and changes made based on ordinary technical knowledge and conventional means in the art should be included within the scope of the present invention.

[0017] This invention relates to a "multifunctional processed fabric with water-resistant, double-sided fluorine-free, and water-repellent properties". Please refer to Figure 1, which is a schematic diagram of the multifunctional processed fabric with water-resistant, double-sided fluorine-free, and water-repellent properties of this invention. It includes a base fabric layer (1) and a rain-resistant and water-repellent composite layer (2). The base fabric layer (1) is woven from a plurality of weft yarn units and a plurality of warp yarn units that are adjacent to and overlap each other, so that the base fabric layer (1) has a first surface (11) and a second surface (12) opposite to the first surface (11). The rain-resistant and water-repellent composite layer (2) is disposed on the first surface (11) and the second surface (12) opposite to the first surface (11) of the base fabric layer (1). Above the second surface (12), the rain-resistant and water-repellent composite layer (2) comprises at least 30-60 WT of water-repellent agent and 40-70 WT of rain-resistant agent. The water-repellent agent comprises at least 30-85 parts by weight of water-repellent agent and 15-70 parts by weight of crosslinking agent. The rain-resistant agent comprises at least 20-30 parts by weight of paraffin emulsion, 1-5 parts by weight of fatty alcohol polyoxyethylene ether and 65-79 parts by weight of water. Thus, the water-resistant, washable, double-sided fluorine-free, water-repellent, multifunctional processed fabric of the present invention forms an overlapping structure with better water repellency, moisture resistance, and breathability, while significantly reducing material and manufacturing costs.

[0018] Please refer to Figure 2, which is a schematic diagram of the manufacturing process of the multifunctional processed fabric with water-resistant, washable, double-sided fluorine-free water-repellent properties according to the present invention. The steps include:

[0019] S1 Material preparation stage: Provide a base fabric, which has a plurality of weft yarn units and a plurality of warp yarn units that are adjacent to each other and woven together. The base fabric can be polyester fiber, polyester cationic fiber, elastic fiber or a combination thereof to form the plurality of weft yarn units and the plurality of warp yarn units that are adjacent to each other and woven together.

[0020] S2 Pretreatment: This involves shrinking, relaxing, semi-bleaching, and pre-forming the base fabric.

[0021] S3 Dyeing process: The base fabric is then dyed, cleaned, set, cleaned a second time, acid-washed and dried. The characteristic is that after the base fabric is cleaned a second time, it is then immersed in an acid-washing and fixing agent at 75~85℃. The acid-washing and fixing agent is prepared by mixing a fixing agent and acetic acid to make its pH value between 4.5 and 5.5. The acid-washing process removes the alkaline agents remaining on the base fabric.

[0022] S4 Post-treatment: After drying the base fabric, a setting process is carried out, characterized in that, in the setting process, 30-60 WT% of a rain-resistant agent and 40-70 WT% of a water-repellent agent are mixed, wherein the water-repellent agent comprises at least 30-85 parts by weight of a water-repellent agent and 15-70 parts by weight of a crosslinking agent, and the rain-resistant agent comprises at least 20-30 parts by weight of a paraffin emulsion, 1-5 parts by weight of a fatty alcohol polyoxyethylene ether and 65-79 parts by weight of water. Then, the base fabric is immersed in the mixture in the setting process, and the immersed base fabric is subjected to pressure suction treatment by a pressure suction device to obtain a multi-functional processed fabric with double-sided fluorine-free water repellency.

[0023] By means of the above-mentioned manufacturing process of a multifunctional processed fabric with water-resistant, double-sided fluorine-free water-repellent properties, it can be made to have water-resistant, fluorine-free, highly efficient water-repellent, moisture-proof, and breathable properties, and improve durability and waterproof performance in humid environments, thereby achieving better adhesion, improving water-resistant properties, and producing strong water-repellent, moisture-proof and breathable effects.

[0024] The above description is only for illustrating the embodiments of the present invention and is not intended to limit the scope of the present invention; therefore, any equivalent structural changes and modifications made without departing from the spirit and scope of the present invention should be covered within the patent scope of the present invention.

[0025] In summary, the embodiments of the present invention can indeed achieve the expected effects. The specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application. It has indeed met the provisions and requirements of the Patent Law. Therefore, an application for invention patent is filed in accordance with the law. I respectfully request your review and granting of a patent. I would be very grateful for your help.

Claims

1. A multifunctional processed fabric with water-resistant, washable, double-sided fluorine-free, and water-repellent properties, comprising: a base fabric layer, which is woven from a plurality of adjacent and overlapping weft yarn units and a plurality of warp yarn units, such that the base fabric layer has a first surface and a second surface opposite to the first surface; and a rain-resistant and water-repellent composite layer disposed above the first surface and the second surface of the base fabric layer; wherein, Each of the rain-resistant and water-repellent composite layers includes at least 30-60 WT of water-repellent agent and 40-70 WT of rain-resistant agent. The water-repellent agent includes at least 30-85 parts by weight of water-repellent agent and 15-70 parts by weight of crosslinking agent. The rain-resistant agent is composed of at least 20-30 parts by weight of paraffin emulsion, 1-5 parts by weight of fatty alcohol polyoxyethylene ether and 65-79 parts by weight of water.

2. A multi-functional processed fabric with water-resistant, washable, double-sided fluorine-free water-repellent properties as described in claim 1, wherein, The water-repellent agent is a polysiloxane compound having any one or more of the following groups: alkyl, amino, hydroxyl, carboxyl, mercapto, and epoxy groups.

3. A multi-functional processed fabric with water-resistant, washable, double-sided fluorine-free water-repellent properties as described in claim 1, wherein, The water-repellent agent is a polysiloxane compound having any one or more of the following groups: alkyl, amino, hydroxyl, carboxyl, mercapto, or epoxy groups.

4. A multi-functional processed fabric with water-resistant, double-sided fluorine-free water-repellent properties as described in claim 1, wherein, The base fabric layer is woven from polyester fibers, cationic polyester fibers, elastic fibers, or combinations thereof, forming multiple weft yarn units that are adjacent to and overlap with multiple warp yarn units.

5. A method for manufacturing a multifunctional processed fabric with water-resistant, double-sided fluorine-free water-repellent properties, comprising the following steps: 1) Material preparation stage: providing a base fabric having a plurality of weft yarn units and a plurality of warp yarn units woven adjacently and overlapping each other; 2) Pretreatment: subjecting the base fabric to shrinking, relaxation, semi-bleaching, and pre-setting processes; 3) Dyeing process: further subjecting the base fabric to dyeing, washing, setting, secondary washing, acid washing, and drying processes, characterized in that the base fabric undergoes... After a second cleaning, the fabric is immersed in an acid pickling and fixing agent at 75-85°C. This acid pickling and fixing agent is a mixture of fixing agent and acetic acid, with a pH value between 4.5 and 5.

5. This acid pickling process removes residual alkaline agents from the base fabric. 4) Post-treatment: After drying, the base fabric undergoes a setting process. The setting process involves mixing 30-60 WT of a rain-resistant agent with 40-70 WT of a water-repellent agent. The water-repellent agent comprises at least 30 to 85 parts by weight of water-repellent agent and 15 to 70 parts by weight of crosslinking agent. The rain-resistant agent comprises at least 20 to 30 parts by weight of paraffin emulsion, 1 to 5 parts by weight of fatty alcohol polyoxyethylene ether and 65 to 79 parts by weight of water. The base fabric is then immersed in the mixture during the setting process, and the immersed base fabric is subjected to pressure suction treatment by a pressure suction device to obtain a multi-functional processed fabric with water-resistant, double-sided fluorine-free water-repellent properties.

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