A method of post-treatment of a fabric

Abstract

The application discloses a post-processing method of a fabric, and the post-processing method comprises the following steps: adding a chemical additive into the fabric, wherein the chemical additive comprises angora setting agent, a three-proofing additive, a brightener and a penetrating agent; performing drying treatment on the fabric, so that the chemical additive is combined with the fabric; heating a calender roller by using hot steam, and the heating temperature is 150-170 DEG C; and performing calendering treatment on the fabric, and the tension of the calender roller is 100-140 N / m, so that the fabric with smooth and glossy surface is obtained. Through the above arrangement, the hand feeling of the fabric can be improved.

Description

Technical Field

[0001] This application relates to the field of fabric processing technology, and in particular to a method for post-processing fabrics. Background Technology

[0002] Lustrous fabrics refer to fabrics with a smooth surface that reflects light, and these fabrics have gained widespread attention for their shimmering luster. Lustrous fabrics have a soft, delicate texture and a luxurious, elegant feel, making them ideal for stage costumes and high-end formal wear. The purpose of this application is to treat fabrics to improve their hand feel. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this application is to provide a post-processing method for fabrics that can improve the hand feel of the fabrics.

[0004] To achieve the above objectives, this application adopts the following technical solution: This application provides a post-processing method for a fabric, which includes performing a surface gloss treatment on the fabric. The surface gloss treatment includes: Step a, add chemical auxiliaries to the fabric, including: Angora setting agent, three-proof agent, brightener and penetrant; Step b: Dry the fabric to allow the chemical additives to fully bond with it. Step c: The calendering roll is heated by hot steam at a temperature of 150-170℃; Step d involves calendering the fabric with a calendering roller tension of 100-140 N / m to obtain a smooth and glossy fabric.

[0005] As a preferred technical solution, the post-processing methods for fabrics include: Step 1: Singe the fabric. Step 2: Wash and steam the fabric after singeing in Step 1. Step 3: Dry the fabric that has undergone flat washing and steaming in Step 2. Step 4: Perform heat setting on the fabric that has been dried in Step 3.

[0006] As a preferred technical solution, in step 2, the fabric is washed and steamed at a temperature of 80-90℃ to fix its shape.

[0007] As a preferred technical solution, the fabric includes polyester fiber and Lycra fiber. In step 4, the heat setting temperature is 185-190℃ and the heat setting time is 25-40 seconds. After heat setting, the fabric width is widened to improve the dimensional stability of the fabric in the weft direction.

[0008] As a preferred technical solution, the post-processing methods for fabrics also include: Step 5: Wash the fabric that has undergone heat setting in Step 4. Step 6: Perform untwisting and opening treatment on the fabric after washing in Step 5. Step 7: Dry the fabric after the untwisting and opening process in Step 6. Step 8: Shear the fabric that has been dried in Step 7.

[0009] As a preferred technical solution, the fabric includes wool fibers and polyester fibers. In step 5, the fabric is placed in a washing machine, and a shrinking agent and process water are added. Under the influence of moisture and heat, the fabric is repeatedly squeezed by mechanical external force to soften the polyester fibers in the fabric. The fabric is then washed again to achieve a hand feel. The washing machine roller pressure is 1.5 bar, the shrinking plate pressure is 0.2 bar, the washing speed is 180 m / min, the temperature is 40℃, and the shrinking agent dosage is 0.8-2% of the fabric weight.

[0010] As a preferred technical solution, in step 3, the fabric is overfed to improve the warp elasticity of the fabric, and the fabric drying speed is 10-25m / min; the fabric overfeed is 6-12%; in step 7, the fabric is overfed to improve the warp elasticity of the fabric, and the fabric drying speed is 28-32m / min; the fabric overfeed is 20-28%.

[0011] As a preferred technical solution, the post-processing methods for fabrics also include: Step 9: Perform a surface gloss treatment on the fabric that has undergone the shearing process in Step 8. Step 10: The fabric that has undergone surface gloss treatment in step 9 is subjected to steam treatment. Step 11: The fabric that has undergone steam treatment in step 9 will be subjected to a gentle wash.

[0012] As a preferred technical solution, in step 10, the fabric is placed flat into the tank of the steamer, and high-temperature steam is injected into the tank at a processing pressure of 1.0 Bar to fully heat and humidify the fabric. The winding tension of the fabric is gradually increased for 150 seconds. A certain temperature and pressure are maintained to ensure that the steam can penetrate the fabric evenly. The steam penetration method is inside-outside-inside. The fabric is then cooled by slowly reducing the temperature and pressure of the tank to avoid deformation of the fabric due to large temperature differences, thereby achieving a shaping effect.

[0013] As a preferred technical solution, in step 11, the fabric is placed in a gentle washing machine and rubbed and bent multiple times. The gentle washing temperature is 70-80℃, the gentle washing speed is 600-700m / min, and the gentle washing time is 20-30min.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: After being processed by the post-processing method described in this application, the fabric's luster is enhanced, and its hand feel is also improved. The addition of chemical auxiliaries, along with drying and heat treatment, makes the fabric fibers softer, while calendering further enhances the fabric's smoothness and evenness, thereby improving the overall quality of the fabric. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the post-processing steps of the fabric used in this application. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, this application provides a post-processing method for fabrics, which includes: Step 1: Singe the fabric. Step 2: Wash and steam the fabric after singeing in Step 1. Step 3: Dry the fabric that has undergone flat washing and steaming in Step 2. Step 4: Perform heat setting on the fabric that has been dried in Step 3. Step 5: Wash the fabric that has undergone heat setting in Step 4. Step 6: Perform untwisting and opening treatment on the fabric after washing in Step 5. Step 7: Dry the fabric after the untwisting and opening process in Step 6. Step 8: Shear the fabric after it has been dried in Step 7. Step 9: Perform a surface gloss treatment on the fabric that has undergone the shearing process in Step 8. Step 10: The fabric that has undergone surface gloss treatment in step 9 is subjected to steam treatment. Step 11: The fabric that has undergone steam treatment in step 9 will be subjected to a gentle wash.

[0018] In this application, the aforementioned fabric is a wool-polyester fabric.

[0019] Specifically, in step 1, a singeing machine is used to effectively remove lint and fluff from the fabric surface, improving the smoothness of the fabric surface. In this application, the singeing machine is of the OTHOFF model, etc. The OTHOFF singeing machine has energy-saving and environmentally friendly characteristics, and through design optimization and efficient operation, it can effectively reduce energy consumption and environmental pollution.

[0020] Specifically, in step 2, a flat-wash and boiling machine is used to wash and boil the fabric in a flat-width manner to rinse away the residual lint on the fabric surface after singeing. The flat-wash and boiling treatment is carried out at a temperature of 80-90℃ to set the shape of the fabric. In this application, the model of the flat-wash and boiling machine is CIMI, etc.

[0021] Specifically, in step 3, a drying and setting machine is used to stretch and dry the fabric. In this application, the drying and setting machine is a multi-layer drying and setting machine manufactured by UNITECH, Italy. The drying width is set according to the width after washing and boiling, and a certain amount of overfeed is applied to improve warp elasticity. The machine speed during drying is 10-25 m / min, and the overfeed is 6-12%, depending on the fabric weight; the higher the fabric weight, the greater the overfeed. In textile technology, overfeed refers to feeding the fabric at a speed greater than the speed at which the chain needle plate feeds the fabric into the drying chamber during drying. Generally, when the fabric enters the drying chamber from the chain needle plate, the fabric surface exhibits varying degrees of wave-like behavior. This feeding method can prevent the fabric from being stretched under tension during processing, thereby giving the fabric better warp elasticity.

[0022] Specifically, in step 4, since the fabric contains polyester and Lycra fibers, a heat-setting process is performed to maintain the fabric's dimensional stability and improve the weft-direction dimensional stability. In this application, an M5471-CM200X8 tenter frame manufactured by Shaoyang Textile Machinery Co., Ltd. is used to heat-set the fabric. The heat-setting temperature is 185-190℃, the heat-setting width depends on actual needs, and the heat-setting time is 25-40 seconds, depending on the Lycra fiber content; the higher the Lycra fiber content, the longer the heat-setting time. After heat-setting, the fabric width is stretched to achieve the stability of the Lycra fibers.

[0023] Specifically, in step 5, the fabric is placed in a wool washing machine, and a washing and shrinking agent and process water are added. Under the influence of moisture and heat, and the fabric itself, it is repeatedly squeezed by mechanical force to soften the polyester fibers in the fabric. The wool is then washed again to achieve a hand feel. In this application, the wool washing machine used is the FLEXIFOLA high-speed washing and shrinking combined machine manufactured by CIMI of Italy.

[0024] During the textile process, wool oil, sizing agents, and antistatic agents are used. Fabrics can also become stained with oil and dust during textile production; dye residue can remain during dyeing; and singeing residue can be left during finishing. Washing is used to remove these impurities from the fabric, resulting in a clean fabric with a pleasant hand feel, body, and surface finish.

[0025] Due to the different characteristics of polyester fiber and wool fiber, polyester fiber has high strength, tight internal molecular arrangement, and lack of hydrophilic structure between molecules. Because of this characteristic of polyester fiber, the washing machine drum pressure is set to 1.5 bar, the shrinking plate pressure is 0.2 bar, the washing speed is 180 m / min, the temperature is 40℃, and the washing shrinking agent dosage is 0.8-2% of the fabric weight.

[0026] Specifically, in step 6, the CORINO untwisting and opening machine is used to untwist and open the fabric, control the liquid injection rate, and reduce the moisture in the fabric.

[0027] Specifically, in step 7, the fabric is dried using a multi-layer drying and setting machine manufactured by UNITECH, Italy. The fabric is loaded onto the machine at a flat width. The drying width should be determined based on the product specifications and the degree of shrinkage during the finishing process to ensure the fabric is fixed in width. A certain amount of overfeed is applied to improve warp elasticity. The drying speed is 28-32 m / min, with an overfeed of 20-28%, depending on the fabric weight and the required warp elasticity. The greater the fabric weight and the greater the required warp elasticity, the greater the overfeed.

[0028] Specifically, in step 8, after determining that the felt meets the requirements, an Italian-imported Lafer four-blade shearing machine is used to shear the front and back sides. This shearing machine is highly efficient and can complete three front and one back shearing operations in one go. The shearing machine includes a spiral blade, a flat blade, and a fabric support frame. Under the combined action of the spiral blade and the flat blade, the nap on the fabric surface is cleaned. Because the fabric is a smooth fabric, a high degree of surface smoothness is required. After shearing, the pilling and fuzzing indicators are guaranteed to be qualified, the fabric surface is smooth, the itchiness on the fabric surface is reduced, and it appears to have a natural luster, reflecting a high-end feel.

[0029] Specifically, in step 9, the surface gloss treatment of the fabric includes: Step a, add chemical auxiliaries to the fabric, including: Angora setting agent, three-proof agent, brightener and penetrant; Lanafix C, an Angolan setting agent, is used in the finishing of wool and its blends in fabrics and knitwear. It can give the fabric shape stability and a special soft hand feel. It mainly acts on the bridging groups of disulfide bonds, improving the arrangement of protein fiber structure. The 'new arrangement' gives the fiber a lasting shape stability without changing the fiber's natural properties.

[0030] IMBITEX NDT is a low-foaming and highly effective penetrant that operates under both cold and hot conditions. It also possesses excellent detergency and alkali stability, making it particularly recommended for environments requiring rapid penetration. It can also be used in the immersion, pad-dyeing, and pad-steaming processes for reactive and direct dyes. It maintains good penetration even in the presence of large amounts of alkali, electrolytes, and reducing agents, while its excellent dispersibility prevents dye aggregation.

[0031] ROLFEX BK 36 is an aliphatic blocked polyisocyanate, free of pyrrolidone, formaldehyde, ketoxime, and pyrazole derivatives. It significantly improves wash, rub, and dry cleaning fastness without affecting the finished product's feel. Due to its aliphatic nature, it does not yellow due to light, temperature, or air, and is very stable at room temperature. It can be used to formulate polyurethane, acrylic, and waterproof resins, and the formulated working solution has a relatively long stability period. It is applied by padding, printing, or coating and cures at 130-140°C. The gloss agent is used as a crosslinking agent in polyurethane and acrylic resin coatings and as a reinforcing agent in fluorinated or non-fluorinated waterproof finishing.

[0032] The three-proof auxiliary agent uses a durable waterproof and oil-repellent agent for textiles (UNIDYNE TG-5601), which is a white or light yellow emulsion. It is suitable for natural and synthetic fibers and provides excellent waterproof and oil-repellent properties. It has excellent storage and processing stability. The pH value of the padding liquor should be maintained at 3-7 to ensure the best waterproof and oil-repellent performance. If the pH value is greater than 7, acetic acid can be used to adjust the pH value.

[0033] Step b: Dry the fabric to allow the chemical additives to fully bond with it. Step c: The calendering roll is heated by hot steam at a temperature of 150-170℃; Step d involves calendering the fabric with a calendering roller tension of 100-140 N / m to obtain a smooth and glossy fabric.

[0034] The fabric surface is flattened by utilizing the plasticity of fibers under humid and hot conditions to enhance the fabric's luster.

[0035] In this application, an F1 (Formula 1) gloss treatment machine is used to treat the surface of the fabric. The F1 gloss treatment machine includes several smooth hard and soft rollers. The hard rollers are metal rollers with highly polished surfaces or engraved with dense parallel lines, and are often equipped with heating devices. The soft rollers are fiber rollers or polyamide plastic rollers. After the fabric is pressed by the combination of hard and soft rollers, the yarn is flattened, the surface is smooth, the gloss is enhanced, and the hand feel is stiff; this is called flat calendering. After the fabric is pressed by a combination of two soft rollers, the yarn is slightly flattened, the gloss is soft, and the hand feel is soft; this is called soft calendering. Different gloss levels can be obtained by using different roller combinations and variations in tension (100-140℃), temperature (150-170℃), and threading method. The F1 (Formula 1) gloss treatment machine uses hot steam for heating, which reduces heat energy consumption. Steam heating also allows the heating device to heat up quickly and is relatively stable, resulting in more uniform heating of the fabric and effectively enhancing the gloss treatment of the fabric surface, while also being more energy-efficient and environmentally friendly.

[0036] In existing technologies, fabrics treated with chemical auxiliaries are cleaned with a cleaning brush to remove impurities and dust from the fabric surface, thus cleaning the fabric. However, in actual production, it has been found that the chemical auxiliaries react chemically on the surface after high-temperature treatment, causing them to condense on the cleaning brush and instead adhere to the moving fabric, resulting in black stains. Repeated cleaning with the brush does not significantly improve the situation. This application addresses this by applying the chemical auxiliaries first and then drying them, allowing the auxiliaries to fully bond with the fabric surface. The fabric is then passed through a gloss finishing machine, improving surface defects while enhancing gloss. Calendering is a mechanical process, and its gloss effect has poor durability. Therefore, using certain chemical auxiliaries for chemical treatment allows for a more durable gloss after calendering.

[0037] Specifically, in step 10, the fabric's shape is stabilized by steam under humid and hot conditions, improving its hand feel and luster. In this application, a KD-95 steamer is used for steam treatment. The fabric is placed flat in the steamer tank, and high-temperature steam is injected into the tank at a treatment pressure of 1.0 Bar, allowing the fabric to be fully heated and humidified. The winding tension of the fabric is gradually increased for 150 seconds. A certain temperature and pressure are maintained to ensure that the steam can penetrate the fabric evenly, with the steam penetration pattern being inside-outside-inside. The fabric is then cooled by slowly reducing the tank temperature and pressure to prevent deformation due to excessive temperature differences, thus achieving a stabilizing effect. After steam treatment, the fabric has stable dimensions, a smooth surface, a natural luster, and a soft and elastic hand feel. This steam treatment is high-intensity; the relatively strong steam pressure and long treatment time ensure that the luster of the treated fabric remains stable, resulting in a better hand feel and luster.

[0038] Specifically, in step 11, the fabric is placed in a gentle washing machine and rubbed and bent multiple times. The gentle washing temperature is 70-80℃, the gentle washing speed is 600-700m / min, and the gentle washing time is 20-30min.

[0039] In this application, a ZONCO soft washing machine is used for the soft washing process. This involves repeatedly rubbing and bending the fabric to achieve a softer hand feel. The fabric, after undergoing multiple calendering processes, is relatively stiff and lacks flexibility. Therefore, a mechanical soft washing method is used, where the fabric is repeatedly struck by the shrinking plate at the back of the washing machine at a certain temperature to make it fluffy.

[0040] This application achieves a sustainable gloss on the fabric surface, combined with the use of chemical auxiliaries, resulting in a fabric surface that is not only glossy but also waterproof and stain-resistant. Furthermore, the mechanical impact of a soft washing machine helps to improve the hand feel of the fabric while maintaining its brightness, thus reducing the need for chemical auxiliaries to improve the hand feel and minimizing their impact on the fabric's gloss and waterproof / stain-resistant properties.

[0041] It should be noted that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates at least two. Unless otherwise stated, terms such as "front," "back," "left," "right," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0042] The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for post-processing fabrics, characterized in that, The post-processing method for the fabric includes performing a surface gloss treatment on the fabric, wherein the surface gloss treatment includes: Step a, adding chemical auxiliaries to the fabric, including: Angora setting agent, three-proof agent, brightening agent and penetrant; Step b: Dry the fabric to allow the chemical additives to fully bond with it. Step c: The calendering roll is heated by hot steam at a temperature of 150-170℃; Step d involves calendering the fabric with a calendering roller tension of 100-140 N / m to obtain a smooth and glossy fabric.

2. The post-processing method for fabric according to claim 1, characterized in that, The post-processing method for the fabric includes: Step 1: Singe the fabric. Step 2: The fabric that has undergone singeing in Step 1 is then washed and steamed. Step 3: Dry the fabric that has undergone flat washing and steaming in Step 2. Step 4: Perform heat setting on the fabric that has been dried in Step 3.

3. The post-processing method for the fabric according to claim 2, characterized in that, In step 2, the fabric is washed and steamed at a temperature of 80-90℃ to set its shape.

4. The post-processing method for fabric according to claim 2, characterized in that, The fabric includes polyester fiber and Lycra fiber. In step 4, the heat setting temperature is 185-190℃ and the heat setting time is 25-40 seconds. After heat setting, the fabric width is widened to improve the dimensional stability of the fabric in the weft direction.

5. The post-processing method for the fabric according to claim 2, characterized in that, The post-processing method for the fabric also includes: Step 5: Wash the fabric that has undergone heat setting in step 4. Step 6: Perform untwisting and opening treatment on the fabric after washing in step 5. Step 7: Dry the fabric after the untwisting and opening process in Step 6. Step 8: Shear the fabric after it has been dried in Step 7.

6. The post-processing method for the fabric according to claim 5, characterized in that, The fabric includes wool fibers and polyester fibers. In step 5, the fabric is placed in a washing machine, and a shrinking agent and process water are added. Under the influence of moisture and heat, the fabric is repeatedly squeezed by mechanical external force to soften the polyester fibers in the fabric. The fabric is then washed again to achieve a hand feel. The washing machine has a drum pressure of 1.5 bar, a shrinking plate pressure of 0.2 bar, a washing speed of 180 m / min, a temperature of 40°C, and the shrinking agent dosage is 0.8-2% of the fabric weight.

7. The post-processing method for fabric according to claim 5, characterized in that, In step 3, the fabric is overfed to improve its warp elasticity. The fabric drying speed is 10-25 m / min, and the fabric overfeed is 6-12%. In step 7, the fabric is overfed to improve its warp elasticity. The fabric drying speed is 28-32 m / min, and the fabric overfeed is 20-28%.

8. The post-processing method for fabric according to claim 5, characterized in that, The post-processing method for the fabric also includes: Step 9: Perform the surface gloss treatment on the fabric after the shearing process in Step 8. Step 10: The fabric after the surface gloss treatment in step 9 is subjected to steam treatment. Step 11: The fabric that has undergone steam treatment in step 9 will be subjected to a gentle wash.

9. The post-processing method for fabric according to claim 8, characterized in that, In step 10, the fabric is placed flat into the steaming tank. High-temperature steam is injected into the tank at a processing pressure of 1.0 Bar to fully heat and humidify the fabric. The winding tension of the fabric is gradually increased for 150 seconds. A certain temperature and pressure are maintained to ensure that the steam can penetrate the fabric evenly. The steam penetration method is inside-outside-inside. The fabric is then cooled by slowly reducing the temperature and pressure of the tank to prevent the fabric from deforming due to large temperature differences, thereby achieving a shaping effect.

10. The post-processing method for the fabric according to claim 8, characterized in that, In step 11, the fabric is placed in a gentle washing machine and rubbed and bent multiple times. The gentle washing temperature is 70-80℃, the gentle washing speed is 600-700m / min, and the gentle washing time is 20-30min.

Images