Anti-reverse-osmosis one-way moisture-conducting fabric and preparation method thereof

Abstract

The invention discloses an anti-reverse-osmosis one-way moisture-conducting fabric and a preparation method thereof.The one-way moisture-conducting fabric is formed by weaving first yarn and second yarn which are different in single fiber number F through a weft knitting technology, a weft knitting double-face pique weave structure is adopted, the first yarn with the small single fiber number F serves as bottom yarn, the second yarn with the large single fiber number F serves as surface yarn, and the first yarn and the second yarn are woven to form the anti-reverse-osmosis one-way moisture-conducting fabric. And the surface of the bottom layer of the one-way moisture-conducting fabric is provided with an anti-reverse-osmosis printed coating. One-way moisture conduction is achieved through the single fiber thickness difference of the bottom yarn and the surface yarn of the fabric, the most effective reverse osmosis prevention one-way moisture conduction effect is achieved in combination with the dynamic printing water locking characteristic of the fluoride-free waterproof auxiliary, the moisture absorption and moisture removal speed is high, the reverse osmosis prevention strength is high, the one-way moisture conduction function cannot be reduced or disappeared due to washing, and the fabric is suitable for being used in a large scale. The fabric is high in surface comfort level and good in skin-friendly performance.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and more specifically to an anti-reverse osmosis unidirectional moisture-conducting fabric and a preparation method thereof. Background Art

[0002] One-way moisture-conducting fabric is a fabric with different moisture-conducting capabilities on the front and bottom sides, so that liquid water (sweat) can be more easily transferred from the side with weak moisture-conducting capability to the side with strong moisture-conducting capability during actual use. During normal wear, especially when sweating during exercise, sweat can be removed from the skin, giving a better dry and comfortable feeling.

[0003] However, the existing one-way moisture-conducting fabrics generally achieve the one-way moisture-conducting function through post-finishing processes and auxiliary agent treatment. The water 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 type of one-way moisture-conducting fabric that uses the hydrophobicity of functional yarns (such as cross yarns, etc.) to achieve the water-conducting effect. Such yarns only have hydrophobicity but no water-locking function, so the fabrics woven with such yarns will have reverse osmosis, the skin-contacting surface is not dry, and the surface of the cross-section yarn is relatively rough, the skin-friendliness is poor, and the application range is relatively limited. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned defects in the prior art and to provide an anti-reverse osmosis unidirectional moisture-conducting fabric and a preparation method thereof.

[0005] To achieve the above object, the first aspect of the present invention provides a method for preparing a reverse osmosis-proof one-way moisture-conducting fabric, comprising the following steps:

[0006] The first yarn and the second yarn with different single fiber numbers F are knitted into a unidirectional moisture-conducting fabric with a double-sided beaded texture by a weft knitting process; wherein the first yarn with a small single fiber number F (Filament) is used as a base yarn, and the second yarn with a large single fiber number F is used as a surface yarn;

[0007] The special auxiliary agent and water are diluted in a weight ratio of 1:2-5, and then added into the printing paste, and the printing mixed slurry is obtained after being stirred evenly, and the printing mixed slurry is put into the slurry barrel of the printing machine for standby use; wherein the special auxiliary agent is mainly composed of a mixture of a fluorine-free waterproofing agent and a surfactant containing a hydrophilic group;

[0008] Put the one-way moisture-conducting fabric into the printing machine with the pattern screen installed, start the printing machine, and print the printing mixed slurry on the bottom surface of the one-way moisture-conducting fabric;

[0009] The one-way moisture-conducting fabric after printing is put into a setting machine for high-temperature setting and drying treatment, and finally the anti-reverse osmosis one-way moisture-conducting fabric is obtained.

[0010] Preferably, the first yarn and the second yarn are yarns made of the same material or yarns made of two different materials.

[0011] Preferably, the first yarn is nylon or polyester, and the second yarn is nylon or polyester.

[0012] Preferably, the first yarn forms a beaded honeycomb shape on the bottom layer of the one-way moisture-conducting fabric, and the second yarn forms a plain weave shape on the surface layer of the one-way moisture-conducting fabric.

[0013] Preferably, the number of single fibers F of the second yarn is greater than 2.5 times the number of single fibers F of the first yarn.

[0014] Preferably, the D number (Denier) of the first yarn and the D number of the second yarn are greater than 30D.

[0015] Preferably, the special auxiliary agent also includes a bridging agent, a thickener and a regulator.

[0016] Preferably, the special auxiliary agent includes the following raw materials in percentage by weight: 30% to 50% fluorine-free waterproofing agent (CO waterproofing agent), 5% to 15% bridging agent, 15% to 25% surfactant containing hydrophilic group, 15% to 25% thickener, and 5% to 15% regulator.

[0017] Preferably, the printing paste is mainly composed of a mixture of a thickener and water.

[0018] Preferably, the printing paste comprises the following raw materials in percentage by weight: 60% to 80% thickener and 20% to 40% water.

[0019] Preferably, the thickener of the special auxiliary agent and the thickener of the printing paste can both be set as a sodium alginate thickener.

[0020] Preferably, the drying temperature of the setting machine is 150° C. to 180° C., and the conveying speed of the setting machine is 20Y / M to 30Y / M.

[0021] Preferably, before the one-way moisture-conducting fabric is printed, the one-way moisture-conducting fabric is also dyed.

[0022] The second aspect of the present invention provides an anti-reverse osmosis unidirectional moisture-conducting fabric, comprising a unidirectional moisture-conducting fabric body, wherein the unidirectional moisture-conducting fabric body is woven by a first yarn and a second yarn with different single fiber numbers F through a weft knitting process and has a double-sided beaded structure, wherein the first yarn with a small single fiber number F is used as a base yarn, and the second yarn with a large single fiber number F is used as a surface yarn, and the bottom surface of the unidirectional moisture-conducting fabric body is provided with an anti-reverse osmosis printed coating, wherein the printed coating is mainly made of a special auxiliary agent, water and a printing paste, and the special auxiliary agent is mainly composed of a mixture of a fluorine-free waterproofing agent and a surfactant containing a hydrophilic group.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The structural design of the present invention is reasonable. It adopts a weft-knitted double-sided beaded structure. The yarn with a small single fiber number F is used as a bottom yarn (skin-contacting surface), which can quickly repel water. The yarn with a large single fiber number F is used as a surface yarn (air contact surface). Through the fiber conduction connecting the bottom and the surface, the moisture at the bottom is fully absorbed and quickly diffused to the outer layer of the fabric, so that the contact area between the moisture and the air is increased, thereby realizing rapid diffusion evaporation, improving evaporation efficiency, and keeping the fabric dry and comfortable. The present invention utilizes the difference in single fiber thickness between the bottom yarn and the surface yarn of the fabric to achieve unidirectional moisture conduction, and combines the dynamic printing water-locking characteristics of the fluorine-free waterproof additive to achieve the most effective anti-reverse osmosis unidirectional moisture conduction effect. The moisture absorption and moisture discharge speed of the present invention is fast, and the anti-reverse osmosis strength is high.

[0025] 2. The one-way moisture conduction function of the present invention is achieved by a purely physical method, and will not be reduced or lost due to washing. The surface comfort of the fabric is high and the skin-friendliness is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the anti-reverse osmosis unidirectional moisture-conducting fabric provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Please refer to Figure 1The figure shows an anti-reverse osmosis unidirectional moisture-conducting fabric, including a unidirectional moisture-conducting fabric body, which is woven by a first yarn and a second yarn with different single fiber numbers F through a weft knitting process. The unidirectional moisture-conducting fabric body adopts a weft-knitted double-sided beaded structure. The unidirectional moisture-conducting 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 a bottom yarn, and the second yarn with a large single fiber number F is used as a surface yarn. The surface of the bottom layer 2 of the unidirectional moisture-conducting fabric body is provided with an anti-reverse osmosis printed coating 3.

[0029] The first yarn forms a beaded honeycomb shape on the bottom layer of the unidirectional moisture-conducting fabric, and the second yarn forms a plain weave shape on the surface layer of the unidirectional moisture-conducting fabric.

[0030] Among them, the water absorption and drainage properties of yarns with the same D number but different single fiber numbers (F numbers) will be different. The water absorption of yarns with a large single fiber number is better than that of yarns with a small single fiber number. One-way moisture-conducting fabrics utilize the difference between the two. Yarns with a large single fiber number are used as face yarns, and yarns with a small single fiber number are used as bottom yarns. Moisture can be conducted and evaporated from the bottom layer of the fabric to the surface layer.

[0031] Example 1

[0032] Embodiment 1 of the present invention provides a method for preparing a reverse osmosis-resistant one-way moisture-conducting fabric, comprising the following steps:

[0033] (1) knitting a first yarn and a second yarn with different single fiber numbers F into a unidirectional moisture-conducting fabric with a double-sided pearl texture by a weft knitting process;

[0034] In step (1), the first yarn is polyester, and the second yarn is polyester. The single fiber number F of the second yarn is more than 2.5 times the single fiber number F of the first yarn.

[0035] (2) diluting the special auxiliary agent and water in a weight ratio of 1:3, adding the mixture to the printing paste, stirring evenly to obtain a printing mixed slurry, and placing the printing mixed slurry into a slurry barrel of a printing machine for standby use;

[0036] Among them, the special additives include the following raw materials in percentage by weight:

[0037] Fluorine-free waterproofing agent (NW-8) 40%, bridging agent (ECO-CLN) 10%, surfactant containing hydrophilic group (hydrophilic factor NC-501) 20%, thickener (NT-DI506C) 20%, regulator (jimtex-QDN-817) 10%.

[0038] The printing paste comprises the following raw materials in percentage by weight:

[0039] Thickener (NT-DI506C) 70%, water 30%.

[0040] (3) placing the unidirectional moisture-conducting fabric into a printing machine with a pattern screen installed, starting the printing machine, and printing the printing mixed slurry on the bottom surface of the unidirectional moisture-conducting fabric;

[0041] (4) The printed unidirectional moisture-conducting fabric is placed in a setting machine for high-temperature setting and drying, and finally the anti-reverse osmosis unidirectional moisture-conducting fabric is obtained.

[0042] In step (4), the drying temperature of the setting machine is 170° C., and the conveying speed of the setting machine is 26 Y / M.

[0043] Example 2

[0044] Embodiment 2 of the present invention provides a method for preparing a reverse osmosis-resistant one-way moisture-conducting fabric, comprising the following steps:

[0045] (1) knitting a first yarn and a second yarn with different single fiber numbers F into a unidirectional moisture-conducting fabric with a double-sided pearl texture by a weft knitting process;

[0046] In step (1), the first yarn is nylon, and the second yarn is nylon. The single fiber number F of the second yarn is more than 2.5 times the single fiber number F of the first yarn.

[0047] (2) diluting the special auxiliary agent and water in a weight ratio of 1:2.5, adding the mixture to the printing paste, stirring evenly to obtain a printing mixed slurry, and placing the printing mixed slurry into a slurry barrel of a printing machine for standby use;

[0048] Among them, the special additives include the following raw materials in percentage by weight:

[0049] Fluorine-free waterproofing agent (NW-8) 50%, bridging agent (ECO-CLN) 10%, surfactant containing hydrophilic group (hydrophilic factor NC-501) 15%, thickener (NT-DI506C) 15%, regulator (jimtex-QDN-817) 10%.

[0050] The printing paste comprises the following raw materials in percentage by weight:

[0051] Thickener (NT-DI506C) 60%, water 40%.

[0052] (3) placing the unidirectional moisture-conducting fabric into a printing machine with a pattern screen installed, starting the printing machine, and printing the printing mixed slurry on the bottom surface of the unidirectional moisture-conducting fabric;

[0053] (4) The printed unidirectional moisture-conducting fabric is placed in a setting machine for high-temperature setting and drying, and finally the anti-reverse osmosis unidirectional moisture-conducting fabric is obtained.

[0054] In step (4), the drying temperature of the setting machine is 150° C., and the conveying speed of the setting machine is 30 Y / M.

[0055] Example 3

[0056] Embodiment 3 of the present invention provides a method for preparing a reverse osmosis-proof one-way moisture-conducting fabric, comprising the following steps:

[0057] (1) knitting a first yarn and a second yarn with different single fiber numbers F into a unidirectional moisture-conducting fabric with a double-sided pearl texture by a weft knitting process;

[0058] In step (1), the first yarn is polyester, and the second yarn is nylon. The single fiber number F of the second yarn is more than 2.5 times the single fiber number F of the first yarn.

[0059] (2) Dyeing of unidirectional moisture-conducting fabrics;

[0060] (3) diluting the special auxiliary agent and water in a weight ratio of 1:4, adding the mixture to the printing paste, stirring evenly to obtain a printing mixed slurry, and placing the printing mixed slurry into a slurry barrel of a printing machine for standby use;

[0061] Among them, the special additives include the following raw materials in percentage by weight:

[0062] Fluorine-free waterproofing agent (NW-8) 35%, bridging agent (ECO-CLN) 5%, surfactant containing hydrophilic group (hydrophilic factor NC-501) 20%, thickener (NT-DI506C) 25%, regulator (jimtex-QDN-817) 15%.

[0063] The printing paste comprises the following raw materials in percentage by weight:

[0064] Thickener (NT-DI506C) 80%, water 20%.

[0065] (4) placing the unidirectional moisture-conducting fabric into a printing machine with a pattern screen installed, starting the printing machine, and printing the printing mixed slurry on the bottom surface of the unidirectional moisture-conducting fabric;

[0066] (5) The printed unidirectional moisture-conducting fabric is placed in a setting machine for high-temperature setting and drying, and finally the anti-reverse osmosis unidirectional moisture-conducting fabric is obtained.

[0067] In step (5), the drying temperature of the setting machine is 180° C., and the conveying speed of the setting machine is 20 Y / M.

[0068] Table 1 shows the test standards and data of the anti-reverse osmosis one-way moisture-conducting fabrics of Examples 1 to 3.

[0069]

[0070] It can be seen from the above table that the anti-reverse osmosis unidirectional moisture-conducting fabrics of Examples 1 to 3 have fast moisture absorption and moisture discharge speeds, can achieve good quick-drying effects, and have high anti-reverse osmosis strength.

[0071] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A method for preparing a reverse osmosis-proof one-way moisture-conducting fabric, characterized in that: The following steps are involved: The first yarn and the second yarn with different single fiber numbers F are knitted into a unidirectional moisture-conducting fabric with a double-sided beaded texture by a weft knitting process; wherein the first yarn with a small single fiber number F is used as a base yarn, and the second yarn with a large single fiber number F is used as a surface yarn; The special auxiliary agent and water are diluted in a weight ratio of 1:2-5, and then added into the printing paste, and stirred evenly to obtain a printing mixed slurry, and the printing mixed slurry is placed into a slurry barrel of a printing machine for standby use; wherein the special auxiliary agent is mainly composed of a mixture of a fluorine-free waterproofing agent and a surfactant containing a hydrophilic group; Put the one-way moisture-conducting fabric into the printing machine with the pattern screen installed, start the printing machine, and print the printing mixed slurry on the bottom surface of the one-way moisture-conducting fabric; The one-way moisture-conducting fabric after printing is put into a setting machine for high-temperature setting and drying treatment, and finally the anti-reverse osmosis one-way moisture-conducting fabric is obtained.

2. The preparation method according to claim 1, characterized in that: The first yarn and the second yarn are configured to be yarns of the same material or yarns of two different materials.

3. The preparation method according to claim 2, characterized in that: The first yarn is set to nylon or polyester, and the second yarn is set to nylon or polyester.

4. The preparation method according to claim 1, characterized in that: The first yarn forms a beaded honeycomb shape on the bottom layer of the one-way moisture-conducting fabric, and the second yarn forms a plain weave shape on the surface layer of the one-way moisture-conducting fabric.

5. The preparation method according to claim 1, characterized in that: 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.

6. The preparation method according to claim 1, characterized in that: The special auxiliary agents also include bridging agents, thickeners and regulators.

7. The preparation method according to claim 1, characterized in that: The printing paste is mainly formed by mixing a thickener and water.

8. The preparation method according to claim 1, characterized in that: The drying temperature of the setting machine is 150° C. to 180° C., and the conveying speed of the setting machine is 20Y / M to 30Y / M.

9. The preparation method according to claim 1, characterized in that: Before the unidirectional moisture-conducting fabric is subjected to the printing process, the unidirectional moisture-conducting fabric is also subjected to the dyeing process.

10. A one-way moisture-conducting fabric that prevents reverse osmosis, characterized in that: It is prepared according to the preparation method according to any one of claims 1 to 9.

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