One-way breathable fabric that prevents reverse permeation and method for manufacturing the same
A double-sided nubby structure with different fiber count yarns and a special agent mixture ensures effective one-way moisture permeability and resistance to reverse osmosis, addressing wash fastness and comfort issues in conventional fabrics.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 梁源
- Filing Date
- 2024-12-12
- Publication Date
- 2026-06-02
Smart Images
Figure 2026090159000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fabrics, and more specifically, to a one-way moisture-permeable fabric for preventing reverse osmosis and a manufacturing method thereof.
Background Art
[0002] A one-way moisture-permeable fabric is a fabric that has different moisture-permeable performances on the front and back surfaces, so that when actually used, liquid water (sweat) can easily flow from the side with weak moisture-permeable performance to the side with strong moisture-permeable performance of the fabric. During normal wearing, especially when sweating during exercise, sweat can be discharged from the skin, making people feel drier and more comfortable.
[0003] However, conventional one-way moisture-permeable fabrics generally achieve the one-way moisture-permeable function through a combination of post-treatment processes and auxiliary agent treatments. The wash fastness of such fabric products is not high, and the function will decrease or disappear after a certain number of washes. There is also a one-way moisture-permeable fabric that realizes the water-conducting effect by utilizing the hydrophobicity of the functional yarn (such as cross yarn, etc.). This type of yarn only has hydrophobicity and no water-lock function. Therefore, the fabric woven with this type of yarn causes reverse osmosis, the contact surface with the skin is difficult to dry, and the surface of the cross-cut yarn is relatively rough, with poor skin affinity and limited application range.
Summary of the Invention
Problems to be Solved by the Invention
[0004] An object of the present invention is to overcome the above-mentioned drawbacks in the prior art and provide a one-way moisture-permeable fabric for preventing reverse osmosis and a manufacturing method thereof.
Means for Solving the Problems
[0005] To achieve the above object, a first aspect of the present invention is as follows: When using a first yarn with a small single fiber number F as the base yarn and a second yarn with a large single fiber number F as the surface yarn, a step of knitting a one-way moisture-permeable fabric having a double-sided nubby structure with the first yarn and the second yarn having different single fiber numbers F by a flat knitting process. The process involves diluting a special auxiliary agent, mainly a mixture of a non-fluorine-based waterproofing agent and a hydrophilic group-containing surfactant, with water in a 1:2 to 5 weight percent ratio, adding it to the printing paste, and stirring it uniformly to prepare a printing slurry. The process then involves placing the printing slurry into the slurry tank of the printing machine to prepare it for use. The process involves placing a one-way breathable fabric into a printing machine equipped with a pattern screen, starting the printing machine, and printing a printing mixture slurry onto the bottom layer surface of the one-way breathable fabric. The present invention provides a method for producing a reverse-penetration-resistant, unidirectional breathable fabric, comprising the steps of: placing a printed, unidirectional breathable fabric into a molding machine and subjecting it to a high-temperature molding and drying process to ultimately produce the reverse-penetration-resistant, unidirectional breathable fabric.
[0006] Preferably, the first and second threads are made of the same material or two different materials.
[0007] Preferably, the first yarn is made of nylon or polyester, and the second yarn is made of nylon or polyester.
[0008] Preferably, the first yarn is formed in a pique honeycomb pattern in the bottom layer of the unidirectional breathable fabric, and the second yarn is formed in a plain weave pattern in the surface layer of the unidirectional breathable fabric.
[0009] Preferably, the number of single fibers F of the second yarn is 2.5 times or more the number of single fibers F of the first yarn.
[0010] Preferably, the D number (denier) of the first yarn and the D number of the second yarn are 30D or higher.
[0011] Preferably, the dedicated auxiliary agent further comprises a crosslinking agent, a thickening agent, and a modifying agent.
[0012] Preferably, the dedicated auxiliary agent contains raw materials in the following weight percentages: 30-50% non-fluorine-based waterproofing agent (CO waterproofing agent), 5-15% crosslinking agent, 15-25% hydrophilic group-containing surfactant, 15-25% thickener, and 5-15% adjusting agent.
[0013] Preferably, the printing paste is a mixture mainly of a thickener and water.
[0014] Preferably, the printing paste contains raw materials in which the weight percentages are 60% to 80% thickener and 20% to 40% water.
[0015] Preferably, the thickener in the dedicated auxiliary agent and the thickener in the printing paste can be sodium alginate thickener.
[0016] Preferably, the drying temperature of the molding machine is 150°C to 180°C, and the conveying speed of the molding machine is 20 Y / M to 30 Y / M.
[0017] Preferably, the unidirectional breathable fabric is dyed before the printing treatment is applied to it.
[0018] A second aspect of the present invention provides a unidirectional breathable fabric body having a double-sided pique structure, in which a first yarn with a small number of single fibers F is used as the base yarn and a second yarn with a large number of single fibers F is used as the face yarn, and the first and second yarns with different numbers of single fibers F are knitted together by a weft knitting process, wherein the surface of the bottom layer of the unidirectional breathable fabric body is coated with a reverse penetration prevention printing coating, the printing coating mainly consists of a special auxiliary agent, water, and printing paste, and the special auxiliary agent is a mixture of a non-fluorine-based waterproofing agent and a hydrophilic group-containing surfactant. [Effects of the Invention]
[0019] Compared to the prior art, the beneficial effects of the present invention are as follows: 1. The present invention has a reasonable structural design, adopts a double-sided napped structure by horizontal knitting, uses a yarn with a small single fiber number F as the base yarn (skin-contact surface), which can be quickly hydrophobized, while using a yarn with a large single fiber number F as the surface yarn (air-contact surface), connecting the bottom and the surface through fiber conduction, fully absorbing the moisture at the bottom, quickly diffusing it to the outer layer of the fabric, increasing the contact area between moisture and air, thereby realizing rapid diffusion and evaporation, improving the evaporation efficiency, and keeping the fabric dry and comfortable. The present invention utilizes the difference in the thickness of the single fibers of the base yarn and the surface yarn of the fabric to achieve one-way moisture permeability, and combines the dynamic printing water-lock characteristics of a non-fluorine-based waterproof agent to achieve the most effective one-way moisture permeability effect of reverse osmosis prevention. The present invention has a fast moisture absorption rate and dehumidification rate, and a high reverse osmosis prevention strength. 2. The one-way moisture permeability function of the present invention is realized by a purely physical method, without reduction or disappearance of the one-way moisture permeability function due to washing, with high surface comfort of the fabric and good skin affinity.
Brief Description of the Drawings
[0020] [Figure 1] It is a schematic structural view of a reverse osmosis prevention one-way moisture permeable fabric provided by an embodiment of the present invention.
Embodiments of the Invention
[0021] Referring to FIG. 1, a reverse osmosis prevention one-way moisture permeable fabric is shown. The reverse osmosis prevention one-way moisture permeable fabric is knitted by a horizontal knitting process with a first yarn and a second yarn having different single fiber numbers F, and includes a one-way moisture permeable fabric body having a double-sided napped structure. The one-way moisture permeable fabric body is divided into a surface layer 1 and a bottom layer 2. The first yarn with a small single fiber number F is used as the base yarn, and the second yarn with a large single fiber number F is used as the surface yarn. A reverse osmosis prevention printing coating is applied on the surface of the bottom layer 2 of the one-way moisture permeable fabric.
[0022] The first yarn is formed in a napped honeycomb shape on the bottom layer of the one-way moisture permeable fabric, and the second yarn is formed in a plain weave shape on the surface layer of the one-way moisture permeable fabric.
[0023] Here, the water absorbency of yarns with the same D number but different single fiber numbers (F number) is different. The water absorbency of yarns with a larger single fiber number is better than that of yarns with a smaller single fiber number. The one-way moisture permeable fabric utilizes these two differences. By using yarns with a larger single fiber number as the surface yarn and yarns with a smaller single fiber number as the base yarn, moisture can be conducted and evaporated from the bottom layer to the surface layer of the fabric.
[0024] Example 1 In Example 1 of the present invention, a method for manufacturing a one-way moisture permeable fabric including the following steps (1) to (4) is provided. Step (1): Weave a one-way moisture permeable fabric having a double-sided napped structure from the first yarn and the second yarn with different single fiber numbers F by a flat knitting process. In step (1), the first yarn is composed of polyester, and the second yarn is composed of polyester. The single fiber number F of the second yarn is 2.5 times or more the single fiber number F of the first yarn.
[0025] Step (2): Dilute a special auxiliary agent and water at a weight percentage of 1:3, add it to the printing paste, and stir evenly to prepare a printing mixed slurry. Put the printing mixed slurry into the slurry tank of the printing machine for use. Here, the special auxiliary agent contains raw materials with a weight percentage of 40% of a non-fluorine-based waterproof agent (NW-8), 10% of a cross-linking agent (ECO-CLN), 20% of a hydrophilic group-containing surfactant (hydrophilic coefficient NC-501), 20% of a thickener (NT-DI506C), and 10% of an adjuster (jimtex-QDN-817).
[0026] The printing paste contains raw materials with a weight percentage of 70% of a thickener (NT-DI506C) and 30% of water.
[0027] Step (3): Put the one-way moisture permeable fabric into a printing machine equipped with a pattern screen, start the printing machine, and print the printing mixed slurry on the surface of the bottom layer of the one-way moisture permeable fabric.
[0028] Step (4): The printed unidirectional breathable fabric is placed in a molding machine and subjected to high-temperature molding and drying treatment to finally produce the reverse-penetration-resistant unidirectional breathable fabric.
[0029] In step (4), the drying temperature of the molding machine is 170°C, and the conveying speed of the molding machine is 26 Y / M.
[0030] Example 2 Embodiment 2 of the present invention provides a method for manufacturing a unidirectional breathable fabric, which includes the following steps (1) to (4). Step (1): A unidirectional breathable fabric with a double-sided pique structure is knitted using a weft knitting process with first and second yarns having different single fiber counts (F). In step (1), the first yarn is made of nylon, and the second yarn is made of nylon. The number of single fibers F in the second yarn is 2.5 times or more the number of single fibers F in the first yarn.
[0031] Step (2): Dilute the special additive and water in a 1:2.5 weight percent ratio, add it to the printing paste, and stir uniformly to prepare a printing slurry. Place the printing slurry into the slurry tank of the printing machine to prepare it for use. Here, the dedicated auxiliary agent contains raw materials that, by weight percentage, consist of 50% non-fluorine-based waterproofing agent (NW-8), 10% crosslinking agent (ECO-CLN), 15% hydrophilic group-containing surfactant (hydrophilicity coefficient NC-501), 15% thickener (NT-DI506C), and 10% modifier (jimtex-QDN-817).
[0032] The textile printing paste contains raw materials that, by weight percentage, consist of 60% thickener (NT-DI506C) and 40% water.
[0033] Step (3): Place the one-way breathable fabric into a printing machine equipped with a pattern screen, start the printing machine, and print the printing mixture slurry onto the bottom layer surface of the one-way breathable fabric.
[0034] Step (4): The printed unidirectional breathable fabric is placed in a molding machine and subjected to high-temperature molding and drying treatment to finally produce the reverse-penetration-resistant unidirectional breathable fabric.
[0035] In step (4), the drying temperature of the molding machine is 150°C, and the conveying speed of the molding machine is 30 Y / M.
[0036] Example 3 Example 3 of the present invention provides a method for manufacturing a one-way breathable fabric, which includes the following steps (1) to (5). Step (1): A unidirectional breathable fabric with a double-sided pique structure is knitted using a weft knitting process with first and second yarns having different single fiber counts (F). In step (1), the first yarn is made of polyester and the second yarn is made of nylon. The number of single fibers F in the second yarn is 2.5 times or more the number of single fibers F in the first yarn.
[0037] Step (2): The unidirectional breathable fabric is dyed.
[0038] Step (3): Dilute the special additive and water in a 1:4 weight percent ratio, add it to the printing paste, and stir uniformly to prepare a printing slurry. Place the printing slurry into the slurry tank of the printing machine to prepare it for use. Here, the dedicated auxiliary agent contains raw materials that, by weight percentage, consist of 35% non-fluorine-based waterproofing agent (NW-8), 5% crosslinking agent (ECO-CLN), 20% hydrophilic group-containing surfactant (hydrophilicity coefficient NC-501), 25% thickener (NT-DI506C), and 15% modifier (jimtex-QDN-817).
[0039] The textile printing paste contains raw materials that, by weight percentage, consist of 80% thickener (NT-DI506C) and 20% water.
[0040] Step (4): Place the one-way breathable fabric into a printing machine equipped with a pattern screen, start the printing machine, and print the printing mixture slurry onto the bottom layer surface of the one-way breathable fabric.
[0041] Step (5): The printed unidirectional breathable fabric is placed in a molding machine and subjected to high-temperature molding and drying treatment to finally produce the reverse-penetration-resistant unidirectional breathable fabric.
[0042] In step (5), the drying temperature of the molding machine is 180°C, and the conveying speed of the molding machine is 20 Y / M.
[0043] Table 1 shows the test standards and data for the reverse-penetration-preventing, unidirectional breathable fabrics of Examples 1-3. [Table 1] As can be seen from the table above, the reverse-penetration-resistant, unidirectional breathable fabrics of Examples 1-3 have fast moisture absorption and dehumidification rates, achieve a good rapid drying effect, and possess high resistance to reverse penetration.
[0044] While the above embodiments are preferred embodiments of the present invention, the embodiments of the present invention are not limited to these embodiments, and various changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit thereof should be equivalent substitutions and are within the scope of protection of the present invention.
Claims
1. When a first yarn with a small number of single fibers F is used as the base yarn and a second yarn with a large number of single fibers F is used as the face yarn, the first and second yarns with different numbers of single fibers F are knitted together in a flat knitting process to create a unidirectional breathable fabric with a double-sided pique structure. The process involves diluting a special auxiliary agent, mainly a mixture of a non-fluorine-based waterproofing agent and a hydrophilic group-containing surfactant, with water in a 1:2 to 5 weight percent ratio, adding it to the printing paste, stirring uniformly to prepare a printing slurry, and then placing the printing slurry into the slurry tank of the printing machine to prepare it for use. The process involves placing a one-way breathable fabric into a printing machine equipped with a pattern screen, starting the printing machine, and printing a printing mixture slurry onto the bottom layer surface of the one-way breathable fabric. The process includes the step of placing a printed unidirectional breathable fabric into a molding machine and subjecting it to a high-temperature molding and drying process, thereby ultimately producing a unidirectional breathable fabric that prevents reverse penetration. A method for manufacturing a unidirectional breathable fabric that prevents reverse permeation.
2. The first thread and the second thread are composed of threads of the same material or two different materials. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
3. The first thread is made of nylon or polyester, and the second thread is made of nylon or polyester. The method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 2.
4. The first yarn is formed in a pique honeycomb pattern in the bottom layer of the unidirectional breathable fabric, and the second yarn is formed in a plain weave pattern in the surface layer of the unidirectional breathable fabric. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
5. The number of single fibers F in the second yarn is 2.5 times or more the number of single fibers F in the first yarn. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
6. The aforementioned dedicated auxiliary agent further comprises a crosslinking agent, a thickening agent, and a modifying agent. The aforementioned dedicated auxiliary agent contains raw materials that, by weight percentage, consist of 30-50% non-fluorine-based waterproofing agent (CO waterproofing agent), 5-15% crosslinking agent, 15-25% hydrophilic group-containing surfactant, 15-25% thickener, and 5-15% adjusting agent. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
7. The aforementioned printing paste contains raw materials that, by weight percentage, amount to 60% to 80% thickener and 20% to 40% water. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
8. The drying temperature of the molding machine is 150°C to 180°C, and the conveying speed of the molding machine is 20 Y / M to 30 Y / M. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
9. Before applying the printing treatment to the unidirectional breathable fabric, the unidirectional breathable fabric is also dyed. A method for producing a unidirectional breathable fabric that prevents reverse penetration, as described in feature 1.
10. A reverse-penetrating, unidirectional breathable fabric characterized by being manufactured according to the manufacturing method described in any one of claims 1 to 9.