Processing technology of anti-static fabric
By impregnating the yarn with an antistatic aniline salt solution and then using infrared image detection and resistivity detection for local and overall processing, the problems of uneven adhesion and poor washability of antistatic fabrics during processing were solved, thus improving the stability and controllability of the fabric.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING BOSSY HOUSE CLOTHING CO LTD
- Filing Date
- 2026-03-19
- Publication Date
- 2026-06-16
AI Technical Summary
Existing wool/cotton blended antistatic fabrics suffer from problems such as uneven adhesion of antistatic substances, poor washability, reduced hand feel and elasticity, and large resistance fluctuations during processing. There is a lack of online quantitative evaluation and regional compensation methods.
By impregnating the yarn with an antistatic aniline salt solution and weaving it, the uniformity of aniline salt adhesion on the fabric surface is detected by infrared imaging. Local and overall treatments are then carried out. Combined with resistivity detection and concentration adjustment, precise control of aniline salt adhesion is achieved, forming a two-level processing technology.
This improves the stability and controllability of the antistatic performance of antistatic fabrics, ensures the uniformity and washability of the fabrics, and enhances the processing qualification rate and fabric precision.
Smart Images
Figure CN122215212A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of textile fabric processing technology, and in particular to a processing technology for antistatic fabric. Background Technology
[0002] Existing wool / cotton blended antistatic fabrics are mostly processed and woven using either "simple blending of conductive fibers" or "post-processing with carbon-based solution spraying." The former often results in localized charge accumulation due to the low and randomly distributed content of conductive fibers; the latter exhibits poor wash resistance, and the uniformity of the spraying cannot be quantified online, leading to large fluctuations in surface resistance between batches. Furthermore, high-temperature dyeing of wool can damage the scales, reducing hand feel and elasticity; while in-situ polymerization of aniline salts can impart durable conductivity, uneven polymerization creates "grayscale difference zones," and currently, there is a lack of online quantitative evaluation and zone compensation methods. Therefore, developing a processing technology for wool / cotton antistatic fabrics that balances hand feel, elasticity, wash resistance, and a uniformly controllable conductive layer is urgently needed in the industry.
[0003] Patent document CN114083847A discloses an antibacterial and antistatic fabric and its processing technology, including: Step 1: setting up an antibacterial and antistatic fabric processing device and passing multiple fabrics through the device; Step 2: attaching an adhesive to the middle layer fabric and adding a solution containing silver ions; Step 3: performing preliminary pressing on the multiple fabrics; Step 4: performing heat pressing on the preliminary pressed fabric to obtain a synthetic fabric; Step 5: performing an outer layer sterilization treatment on the synthetic fabric.
[0004] In existing technologies, antistatic materials are often attached to fabrics through a single process, which fails to overcome the problems of uneven attachment of antistatic materials during the processing of antistatic fabrics, blind treatment of unqualified fabrics, or failure to meet antistatic performance standards after treatment, resulting in low stability of antistatic performance. Summary of the Invention
[0005] Therefore, the present invention provides a processing technology for antistatic fabrics, which solves the problems of uneven adhesion of antistatic substances, blind treatment of unqualified fabrics, or substandard antistatic performance after treatment, resulting in low stability of antistatic performance, which are often achieved by attaching antistatic substances to fabrics through a single process in the existing technology.
[0006] To achieve the above objectives, the present invention provides a processing technology for antistatic fabrics, the process comprising: The yarn impregnated with antistatic aniline salt solution is woven to obtain the initial fabric; An infrared image of the initial fabric surface is acquired. Based on the gray values of different regions of the infrared image of the initial fabric surface, the areas where the uniformity of aniline salt adhesion on the initial fabric surface is unqualified are determined. The concentration of the first aniline salt solution is determined based on the difference between the gray values of the unqualified areas and the standard gray values. The defective areas of the initial fabric are immersed in a first aniline salt solution for local treatment, and then dried to obtain the first fabric. The surface resistivity of the first fabric is detected and compared with the standard surface resistivity to determine the antistatic level of the first fabric, so as to determine whether the antistatic level of the first fabric meets the standard. In response to the first fabric's substandard antistatic level, the concentration of the second aniline salt solution is determined by combining the ratio of the surface resistivity to the standard surface resistivity with the concentration of the standard aniline salt solution. The first fabric, which does not meet the antistatic grade standard, is immersed in the second aniline salt solution for treatment, and then dried to obtain the second fabric.
[0007] Furthermore, it also includes a secondary localized treatment of the first fabric, including: An infrared image of the surface of the first fabric is acquired using an infrared scanning device; Based on the grayscale values of different regions of the infrared image of the first fabric surface, the areas where the aniline salt adhesion uniformity of the first fabric surface is unqualified are determined. In response to areas on the first fabric surface where the uniformity of aniline salt adhesion is unqualified, the adjusted concentration of the first aniline salt solution is calculated based on the product of the first aniline salt solution concentration adjustment coefficient and the first aniline salt solution concentration. The areas on the surface of the first fabric with unqualified aniline salt adhesion were immersed in the adjusted first aniline salt solution for secondary local treatment, and then dried to obtain the treated first fabric.
[0008] Further, based on the grayscale values of different regions of the infrared image of the initial fabric surface, areas where the aniline salt adhesion uniformity of the initial fabric surface is unqualified are determined, including: The initial infrared image of the fabric surface is divided into several image units; The image units with unqualified surface aniline salt adhesion uniformity are determined based on the ratio of the difference between the gray value of each image unit and the standard gray value to the overall average gray value of the initial fabric surface. The set of image units with unqualified surface aniline salt adhesion is identified as the unqualified area of surface aniline salt adhesion of the initial fabric.
[0009] Further, determining the image units with unqualified surface aniline salt adhesion uniformity based on the ratio of the difference between the grayscale value of each image unit and the standard grayscale value to the overall average grayscale value of the initial fabric surface includes: The overall average gray value of the initial fabric surface is calculated based on the ratio of the sum of the gray values of a plurality of image units to the number of image units, and the coefficient of variation of the uniformity of surface aniline salt adhesion is calculated based on the ratio of the difference to the overall average gray value of the initial fabric surface. The calculated coefficient of variation of the surface aniline salt adhesion uniformity is compared with the preset maximum standard coefficient of variation. When the calculated coefficient of variation of the surface aniline salt adhesion uniformity is greater than the preset maximum standard coefficient of variation, the image unit corresponding to the coefficient of variation of the surface aniline salt adhesion uniformity is determined to be an image unit with unqualified surface aniline salt adhesion uniformity.
[0010] Further, determining the concentration of the first aniline salt solution based on the difference between the grayscale value of the non-conforming area and the standard grayscale value includes: When the non-conforming difference is within a difference range greater than zero, it includes: When the non-compliance difference is determined to be in the first difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a slightly uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the first recoating solution and the standard gray value. When the non-compliance difference is determined to be in the second difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a moderately uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the second recoating solution and the standard gray value. When the non-compliance difference is determined to be within the third difference range, the area with non-compliance in the adhesion uniformity of the initial fabric surface aniline salt is assessed as a severely uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the third recoating solution and the standard gray value. Wherein, the first difference interval, the second difference interval, and the third difference interval all belong to the difference interval greater than zero, and 0 < the concentration coefficient of the first touch-up solution < the concentration coefficient of the second touch-up solution < the concentration coefficient of the third touch-up solution < 1.
[0011] Furthermore, when the non-compliance difference is in the range of less than zero, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a local aniline salt crystallization area and the surface aniline salt crystals are removed.
[0012] Furthermore, the concentration adjustment coefficient of the first aniline salt solution is the sum of the concentration adjustment step size and 1, wherein the concentration adjustment step size is the product of the unit adjustment step size and the number of adjustment steps.
[0013] Further, the step of comparing the surface resistivity with the standard surface resistivity to determine the antistatic level of the first fabric includes: when the surface resistivity exceeds the standard surface resistivity range, determining that the antistatic level of the first fabric is substandard; when the surface resistivity is within the standard surface resistivity range, determining that the antistatic level of the first fabric is compliant.
[0014] Further, the concentration of the second aniline salt solution is the product of the ratio of the surface resistivity to the standard surface resistivity and the concentration of the standard aniline salt solution.
[0015] Furthermore, the drying process is a gradient temperature-controlled drying process.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Pre-treatment of the yarn by immersing it in a standard concentration of antistatic aniline salt solution achieves initial antistatic treatment, which facilitates the full adhesion of antistatic substances to the yarn and improves the stability of the antistatic performance of the antistatic fabric; Detection of the uniformity of aniline salt adhesion on the initial fabric surface by acquiring infrared images helps to more accurately locate areas with unqualified aniline salt adhesion on the antistatic fabric surface; Local treatment of these unqualified areas effectively improves the uniformity of aniline salt adhesion on the initial fabric surface; Testing the antistatic level of the first fabric and determining if it is substandard enhances the controllability of the antistatic performance of the first fabric; Grading the first fabric based on the substandard antistatic level improves the pass rate of antistatic fabric processing; The dual-layer antistatic fabric processing technology, combining precise local recoating with overall quantitative control, improves the stability and controllability of antistatic performance.
[0017] In particular, by performing infrared detection again on the initial fabric after localized treatment, areas with unqualified aniline salt adhesion on the surface are avoided, thus improving the accuracy of fabric processing. The adjusted concentration of the first aniline salt solution is calculated by multiplying the first aniline salt solution concentration by the first aniline salt solution concentration adjustment coefficient, further improving the accuracy of the aniline salt solution concentration used for localized treatment. This allows for further adjustment of the solution concentration if uniformity is not achieved in a single localized treatment, thereby improving the accuracy of localized fabric treatment.
[0018] In particular, by dividing the infrared imaging of the initial fabric surface into several image units, the area for grayscale value comparison is refined; by comparing the grayscale value of each image unit with the standard grayscale value one by one, the unqualified image units are identified, thereby improving the accuracy of grayscale value comparison.
[0019] In particular, by calculating the coefficient of variation of the uniformity of surface aniline salt adhesion and comparing it with the preset maximum standard coefficient of variation, the image units with unqualified surface aniline salt adhesion can be accurately identified, thereby improving the accuracy of identifying unqualified image units.
[0020] In particular, by determining the unevenness level through difference intervals and calculating the first aniline salt solution concentration by combining the gradient concentration coefficient with the standard aniline salt solution concentration, a precise, differentiated, and standardized control mechanism for the aniline salt recoating concentration is formed. The graded recoating concentration matching solves the problem of insufficient or excessive recoating caused by uniform concentration recoating in traditional antistatic fabric processing, which leads to poor aniline salt adhesion uniformity and unstable antistatic performance.
[0021] In particular, by determining the antistatic level of the surface resistivity range and calculating the concentration of the second aniline salt solution linked to the resistivity ratio, a precise, quantitative, and adaptable overall recoating concentration control mechanism is constructed for antistatic fabrics that fail to meet performance standards. This effectively avoids the problems of blindly recoating unqualified antistatic fabrics, lack of quantitative basis for concentration, and easy over- or under-standard performance after recoating in the antistatic fabric processing technology.
[0022] In particular, by segmenting and adjusting the temperature, wind speed, and time, precise control of aniline salt migration and fixation during the processing of antistatic fabrics was achieved. Attached Figure Description
[0023] Figure 1 This is a process flow diagram of an antistatic fabric according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the secondary local processing of an antistatic fabric in an embodiment of the present invention. Figure 3 The flowchart illustrates the determination of the processing technology of an antistatic fabric in an embodiment of the present invention, specifically the process for identifying areas with unqualified aniline salt adhesion uniformity on the initial fabric surface. Figure 4 This is a logic diagram illustrating the processing technology of an antistatic fabric in an embodiment of the present invention. Detailed Implementation
[0024] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
[0025] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0026] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.
[0027] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0028] Please see Figure 1 As shown, it is a process flow diagram of an antistatic fabric in an embodiment of the present invention. Please see Figure 4 As shown, it is a logic diagram of the processing technology of an antistatic fabric in an embodiment of the present invention.
[0029] This invention provides a processing technology for antistatic fabrics, including: S1, the yarn impregnated with antistatic aniline salt solution is woven to obtain the initial fabric; S2, acquire the infrared image of the initial fabric surface, determine the areas of non-compliant aniline salt adhesion uniformity on the initial fabric surface based on the gray values of different areas of the infrared image of the initial fabric surface, and determine the concentration of the first aniline salt solution based on the non-compliant difference between the gray values of the non-compliant areas and the standard gray values. S3, the defective areas of the initial fabric are immersed in the first aniline salt solution for local treatment, and then dried to obtain the first fabric; S4, detect the surface resistivity of the first fabric and compare the surface resistivity with the standard surface resistivity to determine the antistatic level of the first fabric, so as to determine whether the antistatic level of the first fabric meets the standard. S5, in response to the first fabric's antistatic level failing to meet the standard, the concentration of the second aniline salt solution is determined based on the ratio of the surface resistivity to the standard surface resistivity and the concentration of the standard aniline salt solution. S6. The first fabric, which does not meet the antistatic level standard, is immersed in the second aniline salt solution for treatment, and then dried to obtain the second fabric.
[0030] Pre-treatment of the yarn by immersing it in a standard concentration of antistatic aniline salt solution achieves initial antistatic treatment, facilitating the full adhesion of antistatic substances to the yarn and improving the stability of the antistatic performance of the antistatic fabric. Detecting the uniformity of aniline salt adhesion on the initial fabric surface using infrared images allows for more precise location of areas with substandard aniline salt adhesion. Localized treatment of these substandard areas effectively improves the uniformity of aniline salt adhesion on the initial fabric surface. Testing the antistatic level of the first fabric and determining if it is substandard enhances the controllability of its antistatic performance. Grading the first fabric based on its substandard antistatic level improves the pass rate of antistatic fabric processing. A two-layer antistatic fabric processing technology combining precise local recoating with overall quantitative control improves the stability and controllability of antistatic performance.
[0031] Please see Figure 2 As shown, it is a flowchart of the secondary local processing of an antistatic fabric in an embodiment of the present invention.
[0032] Specifically, after locally treating the areas with unsatisfactory aniline salt adhesion uniformity on the initial fabric surface, the first fabric is tested again. If areas with unsatisfactory aniline salt adhesion uniformity still exist, the first fabric undergoes a second local treatment, including: S321, Obtain an infrared image of the surface of the first fabric using an infrared scanning device; S322, Based on the gray values of different regions of the infrared image of the first fabric surface, determine the areas of unqualified aniline salt adhesion on the first fabric surface; S323, in response to the area of non-uniformity of aniline salt adhesion on the surface of the first fabric, the adjusted concentration of the first aniline salt solution is calculated based on the product of the first aniline salt solution concentration adjustment coefficient and the concentration of the first aniline salt solution. S324, the area on the surface of the first fabric with unqualified aniline salt adhesion is immersed in the adjusted first aniline salt solution for secondary local treatment, and then dried to obtain the treated first fabric.
[0033] Specifically, the concentration adjustment coefficient of the first aniline salt solution is the sum of the concentration adjustment step size and 1, and the concentration adjustment step size is the product of the unit adjustment step size and the number of adjustment steps.
[0034] In this embodiment, if the fabric still has areas with unsatisfactory aniline salt adhesion uniformity after a single local treatment, the first aniline salt solution concentration adjustment coefficient, used to adjust the concentration of the first aniline salt solution, is set to a value corresponding to these areas. Where K is the concentration adjustment coefficient of the first aniline salt solution, i is the unit adjustment step size, and n is the number of adjustment steps. In this embodiment, the unit adjustment step size is 0.1.
[0035] By performing infrared detection again on the initially treated fabric, areas with unqualified aniline salt adhesion on the surface are avoided, thus improving the accuracy of fabric processing. The adjusted concentration of the first aniline salt solution is calculated by multiplying the first aniline salt solution concentration by the first aniline salt solution concentration adjustment coefficient, further improving the accuracy of the aniline salt solution concentration used for local treatment. This allows for further adjustment of the solution concentration if uniformity is not achieved in the first local treatment, thereby improving the accuracy of local fabric treatment.
[0036] Please see Figure 3 As shown, it is a flowchart illustrating the determination of the processing technology of an antistatic fabric in an embodiment of the present invention, specifically the process for determining the area of unqualified aniline salt adhesion on the initial fabric surface.
[0037] Specifically, determining the areas on the initial fabric surface with unsatisfactory aniline salt adhesion uniformity based on the grayscale values of different regions in the infrared image of the initial fabric surface includes: S21, the initial infrared image of the fabric surface is divided into several image units; S22, determine the image units with unqualified surface aniline salt adhesion uniformity based on the ratio of the difference between the gray value of each image unit and the standard gray value to the overall average gray value of the initial fabric surface; S23, determine the set of image units with unqualified surface aniline salt adhesion as the unqualified area of surface aniline salt adhesion of the initial fabric.
[0038] By dividing the infrared image of the initial fabric surface into several image units, the area for grayscale value comparison is refined; by comparing the grayscale value of each image unit with the standard grayscale value one by one, unqualified image units are identified, thereby improving the accuracy of grayscale value comparison.
[0039] Specifically, determining the image units with unqualified surface aniline salt adhesion uniformity based on the ratio of the difference between the grayscale value of each image unit and the standard grayscale value to the overall average grayscale value of the initial fabric surface includes: The overall average gray value of the initial fabric surface is calculated based on the ratio of the sum of the gray values of a plurality of image units to the number of image units, and the coefficient of variation of the uniformity of surface aniline salt adhesion is calculated based on the ratio of the difference to the overall average gray value of the initial fabric surface. In this embodiment, the preset standard grayscale value is G0, the grayscale value of the image unit is denoted as G1, the calculated difference is denoted as SD = G1 - G0, and the overall average grayscale value of the initial fabric surface is denoted as Gp. The coefficient of variation for the uniformity of aniline salt adhesion on the surface is calculated based on the ratio of the difference to the overall average grayscale value of the initial fabric surface, and is denoted as... The calculated coefficient of variation of the surface aniline salt adhesion uniformity is compared with the preset maximum standard coefficient of variation. When the calculated coefficient of variation of the surface aniline salt adhesion uniformity is greater than the preset maximum standard coefficient of variation, the image unit corresponding to the coefficient of variation of the surface aniline salt adhesion uniformity is determined to be an image unit with unqualified surface aniline salt adhesion uniformity.
[0040] In this embodiment, the maximum standard coefficient of variation is set to 10%.
[0041] By calculating the coefficient of variation of the uniformity of surface aniline salt adhesion and comparing it with the preset maximum standard coefficient of variation, the image units with unqualified surface aniline salt adhesion can be accurately identified, thereby improving the accuracy of identifying unqualified image units.
[0042] Specifically, determining the concentration of the first aniline salt solution based on the difference between the grayscale value of the non-conforming area and the standard grayscale value includes: When the non-conforming difference is within a difference range greater than zero, it includes: When the non-compliance difference is determined to be in the first difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a slightly uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the first recoating solution and the standard gray value. When the non-compliance difference is determined to be in the second difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a moderately uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the second recoating solution and the standard gray value. When the non-compliance difference is determined to be within the third difference range, the area with non-compliance in the adhesion uniformity of the initial fabric surface aniline salt is assessed as a severely uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the third recoating solution and the standard gray value. Wherein, the first difference interval, the second difference interval, and the third difference interval all belong to the difference interval greater than zero, and 0 < the concentration coefficient of the first touch-up solution < the concentration coefficient of the second touch-up solution < the concentration coefficient of the third touch-up solution < 1.
[0043] When the non-compliance difference is in the range of less than zero, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a local aniline salt crystallization area and the surface aniline salt crystals are removed.
[0044] In this embodiment, the evaluation of the initial fabric surface aniline salt adhesion uniformity non-compliant area is based on a difference of 5 < SD ≤ 10 corresponding to a slightly uneven area. Since the grayscale value of the uneven area is slightly higher than that of the compliant area, the concentration coefficient of the first recoating solution is selected to be within the range of [0.7, 0.8]. The concentration of the first recoating solution is the product of the first recoating solution concentration coefficient and the initial solution concentration. The difference after recoating is recorded as... , Within the range [0, 5], the gray values of the treated area and the qualified area are basically the same, and the coefficient of variation of the uniformity of aniline salt adhesion on the surface is relatively consistent. ; The initial fabric surface aniline salt adhesion uniformity was assessed as a medium-uneven area with a difference of 10 < SD ≤ 20. If the initial fabric surface aniline salt adhesion was a large area of missing adhesion, then the concentration coefficient of the second recoating solution was selected to be within the range of (0.8, 0.85). The concentration of the first recoating solution was the product of the concentration coefficient of the second recoating solution and the initial solution concentration. After recoating, the difference SD' was within the range of [0, 5], which just replenished the aniline salt and connected seamlessly with the qualified area. If the initial fabric surface aniline salt adhesion uniformity is found to be unqualified in areas with severe unevenness (SD > 20), and the initial fabric surface aniline salt adhesion is such that the gray value is close to that of the blank sample, then a third replenishment solution with a concentration coefficient in the range of (0.85, 0.9) is first applied for replenishment. If SD' > 5 still exists after testing, then a trace amount of aniline salt solution with a concentration coefficient of 0.7 is applied to the transition area to avoid crystallization caused by a one-time high concentration. The initial assessment determined that areas with unsatisfactory aniline salt adhesion uniformity on the fabric surface were crystallized patches, i.e., local differences < 0 and a sharp drop in grayscale value. Therefore, the floating crystals were first removed, followed by a light touch-up coating using an aniline salt solution with a concentration coefficient within the range of [0.6, 0.7]. After the touch-up coating... This causes the gray value of the crystallized area to rise slightly, making it consistent with the surrounding area.
[0045] By determining the unevenness level through difference intervals and calculating the first aniline salt solution concentration by combining the gradient concentration coefficient with the standard aniline salt solution concentration, a precise, differentiated, and standardized control mechanism for aniline salt recoating concentration is formed. The graded recoating concentration matching solves the problem of insufficient or excessive recoating caused by uniform concentration recoating in traditional antistatic fabric processing, which leads to poor aniline salt adhesion uniformity and unstable antistatic performance.
[0046] Specifically, the step of comparing the surface resistivity with the standard surface resistivity to determine the antistatic level of the first fabric includes: when the surface resistivity exceeds the standard surface resistivity range, determining that the antistatic level of the first fabric is substandard; when the surface resistivity is within the standard surface resistivity range, determining that the antistatic level of the first fabric is compliant.
[0047] Specifically, the concentration of the second aniline salt solution is the product of the ratio of the surface resistivity to the standard surface resistivity and the concentration of the standard aniline salt solution.
[0048] By determining the antistatic level within a surface resistivity range and calculating the concentration of the second aniline salt solution linked to the resistivity ratio, a precise, quantitative, and adaptable overall recoating concentration control mechanism is constructed for antistatic fabrics that fail to meet performance standards. This effectively avoids the problems of blindly recoating unqualified antistatic fabrics, lack of quantitative basis for concentration, and easy over- or under-standard performance after recoating in the antistatic fabric processing technology.
[0049] Specifically, the drying process is gradient temperature controlled drying.
[0050] In this embodiment, the gradient temperature-controlled drying includes pre-drying, medium-temperature drying, and constant-temperature fixation drying. Pre-drying involves a drying temperature of 30±2℃, a drying air velocity of 0.5-1m / s, and a drying time of 15-20min, used to slowly evaporate surface moisture and prevent aniline salt migration. Medium-temperature drying involves a drying temperature of 45±2℃, a drying air velocity of 0.5-1m / s, and a drying time of 25-30min, used to gradually evaporate moisture inside the fiber bundle, allowing aniline salt to be evenly adsorbed onto the fiber surface. Constant-temperature fixation drying involves a drying temperature of 55±2℃, a drying air velocity of 0-0.5m / s, and a drying time of 10-15min, used to ensure a stable bond between aniline salt and wool fibers, preventing subsequent shedding.
[0051] By segmenting and adjusting temperature, wind speed, and time, precise control of aniline salt migration and fixation during the processing of antistatic fabrics was achieved.
[0052] In this embodiment, the comparison table of surface resistivity changes during the antistatic fabric treatment process is as follows:
[0053] By employing a gradient processing technique involving antistatic pretreatment of yarn, primary and secondary local treatments of the fabric, and overall treatment, problems such as uneven adhesion of antistatic substances, blind treatment of substandard fabrics, or failure to meet antistatic performance standards after treatment are avoided during the processing of antistatic fabrics. This improves the stability and controllability of the fabric's antistatic performance.
[0054] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.
Claims
1. A processing technology for an antistatic fabric, characterized in that, include: The yarn impregnated with antistatic aniline salt solution is woven to obtain the initial fabric; An infrared image of the initial fabric surface is acquired. Based on the gray values of different regions of the infrared image of the initial fabric surface, the areas where the uniformity of aniline salt adhesion on the initial fabric surface is unqualified are determined. The concentration of the first aniline salt solution is determined based on the difference between the gray values of the unqualified areas and the standard gray values. The defective areas of the initial fabric are immersed in a first aniline salt solution for local treatment, and then dried to obtain the first fabric. The surface resistivity of the first fabric is detected and compared with the standard surface resistivity to determine the antistatic level of the first fabric, so as to determine whether the antistatic level of the first fabric meets the standard. In response to the first fabric's substandard antistatic level, the concentration of the second aniline salt solution is determined by combining the ratio of the surface resistivity to the standard surface resistivity with the concentration of the standard aniline salt solution. The first fabric, which does not meet the antistatic grade standard, is immersed in the second aniline salt solution for treatment, and then dried to obtain the second fabric.
2. The processing technology of the antistatic fabric according to claim 1, characterized in that, It also includes secondary local processing of the first fabric, including: An infrared image of the surface of the first fabric is acquired using an infrared scanning device; Based on the grayscale values of different regions of the infrared image of the first fabric surface, the areas where the aniline salt adhesion uniformity of the first fabric surface is unqualified are determined. In response to areas on the first fabric surface where the uniformity of aniline salt adhesion is unqualified, the adjusted concentration of the first aniline salt solution is calculated based on the product of the first aniline salt solution concentration adjustment coefficient and the first aniline salt solution concentration. The areas on the surface of the first fabric with unqualified aniline salt adhesion were immersed in the adjusted first aniline salt solution for secondary local treatment, and then dried to obtain the treated first fabric.
3. The processing technology of the antistatic fabric according to claim 2, characterized in that, Based on the grayscale values of different regions in the infrared image of the initial fabric surface, areas with unsatisfactory aniline salt adhesion uniformity on the initial fabric surface are determined, including: The initial infrared image of the fabric surface is divided into several image units; The image units with unqualified surface aniline salt adhesion uniformity are determined based on the ratio of the difference between the gray value of each image unit and the standard gray value to the overall average gray value of the initial fabric surface. The set of image units with unqualified surface aniline salt adhesion is identified as the unqualified area of surface aniline salt adhesion of the initial fabric.
4. The processing technology of the antistatic fabric according to claim 3, characterized in that, The step of determining the image units with unqualified surface aniline salt adhesion uniformity based on the ratio of the difference between the gray value of each image unit and the standard gray value to the overall average gray value of the initial fabric surface includes: The overall average gray value of the initial fabric surface is calculated based on the ratio of the sum of the gray values of a plurality of image units to the number of image units, and the coefficient of variation of the uniformity of surface aniline salt adhesion is calculated based on the ratio of the difference to the overall average gray value of the initial fabric surface. The calculated coefficient of variation of the surface aniline salt adhesion uniformity is compared with the preset maximum standard coefficient of variation. When the calculated coefficient of variation of the surface aniline salt adhesion uniformity is greater than the preset maximum standard coefficient of variation, the image unit corresponding to the coefficient of variation of the surface aniline salt adhesion uniformity is determined to be an image unit with unqualified surface aniline salt adhesion uniformity.
5. The processing technology of the antistatic fabric according to claim 4, characterized in that, The determination of the concentration of the first aniline salt solution based on the difference between the gray value of the non-conforming area and the standard gray value includes: When the non-conforming difference is within a difference range greater than zero, it includes: When the non-compliance difference is determined to be in the first difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a slightly uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the first recoating solution and the standard gray value. When the non-compliance difference is determined to be in the second difference range, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a moderately uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the second recoating solution and the standard gray value. When the non-compliance difference is determined to be within the third difference range, the area with non-compliance in the adhesion uniformity of the initial fabric surface aniline salt is assessed as a severely uneven area, and the concentration of the first aniline salt solution is determined to be the product of the concentration coefficient of the third recoating solution and the standard gray value. Wherein, the first difference interval, the second difference interval, and the third difference interval all belong to the difference interval greater than zero, and 0 < the concentration coefficient of the first touch-up solution < the concentration coefficient of the second touch-up solution < the concentration coefficient of the third touch-up solution < 1.
6. The processing technology of the antistatic fabric according to claim 5, characterized in that, When the non-compliance difference is in the range of less than zero, the non-compliance area of the initial fabric surface aniline salt adhesion uniformity is evaluated as a local aniline salt crystallization area and the surface aniline salt crystals are removed.
7. The processing technology of the antistatic fabric according to claim 2, characterized in that, The concentration adjustment coefficient of the first aniline salt solution is the sum of the concentration adjustment step size and 1, where the concentration adjustment step size is the product of the unit adjustment step size and the number of adjustment steps.
8. The processing technology of the antistatic fabric according to claim 7, characterized in that, The step of comparing the surface resistivity with the standard surface resistivity to determine the antistatic level of the first fabric includes: when the surface resistivity exceeds the standard surface resistivity range, determining that the antistatic level of the first fabric is substandard; when the surface resistivity is within the standard surface resistivity range, determining that the antistatic level of the first fabric meets the standard.
9. The processing technology of the antistatic fabric according to claim 8, characterized in that, The concentration of the second aniline salt solution is the product of the ratio of the surface resistivity to the standard surface resistivity and the concentration of the standard aniline salt solution.
10. The processing technology of the antistatic fabric according to claim 9, characterized in that, The drying process is a gradient temperature controlled drying process.