Ready-to-wear, wash-free denim garment and method of production

Abstract

The application provides a ready-to-wear washing-free jean garment and a production method thereof, belongs to the field of textile garments, and relates to a production method of a whole process from raw material design selection, yarn structure design, fabric weaving process, fabric pretreatment process to jean pattern design and digital printing. The jean garment made by using the fabric woven by high-mass-value low-twist filament wrapped yarn and subjected to digital printing has the characteristics of soft and flexible texture and clear fabric texture with stereoscopic feeling without washing, and the ready-to-wear washing-free jean garment prepared according to the production method will become a new trend of jean garment production.

Description

Technical Field

[0001] This application belongs to the field of textiles and apparel, specifically relating to a ready-made denim garment that does not require washing and its production method. Background Technology

[0002] Cotton yarn, dyed multiple times with indigo to create a ring-dyed white core, is then used to make denim garments that undergo various complex physical and chemical washing processes. This results in denim clothing with different finishes, such as distressed and faded, which are very popular with consumers. Based on pure cotton fabrics, indigo dyeing, and garment washing, denim culture has developed over a century. Traditional denim garments, due to their complex washing processes, are soft and supple with clear, three-dimensional fabric textures. However, these complex washing processes make the manufacturing process and operations more complicated, consuming more water, generating more waste, and causing environmental pollution due to the chemical reagents used in the washing process.

[0003] In recent years, with the rapid development of digital printing technology and the guidance of green, low-carbon, and environmentally friendly practices, people have begun to try using digital inkjet printing to directly print the washed denim texture onto the fabric, which is then cut and sewn into garments. This production method eliminates the need for garment washing to achieve the desired denim texture effect. However, because digitally printed garments have not undergone garment washing, they suffer from unclear fabric textures, lack of three-dimensionality, a stiff and unresponsive feel, and discomfort when worn. This has resulted in low market acceptance for this type of denim. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a ready-made, water-wash-free denim garment and its production method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a high-micronaire low-twist filament wrapped yarn, wherein the high-micronaire low-twist filament wrapped yarn is a filament wrapped cotton fiber structure, wherein the filament is a high-shrinkage FDY polyester filament with a shrinkage rate of 30%-60% in boiling water, and the high micronaire refers to the micronaire value of the selected cotton fiber being ≥5.0.

[0007] The twist coefficient of the high-numerical-value low-twist filament wrapping yarn is 270-300, the number range of the high-numerical-value low-twist filament wrapping yarn is 29-72.8tex, and the mass ratio of high-shrinkage FDY polyester filament in the high-numerical-value low-twist filament wrapping yarn is 10%-20%.

[0008] In the high-numerical-value, low-twist filament wrapped yarn, more than 85% of the cotton fibers have a length of not less than 28mm.

[0009] The fineness range of the high-shrinkage FDY polyester filament in the high-numerical-value low-twist filament wrapped yarn is 30D-90D, and the number of plies is 36F-96F.

[0010] In a second aspect, the present invention provides the application of the above-mentioned high-numerical-value low-twist filament wrapped yarn in the following (1) or (2):

[0011] (1) Prepare denim garment fabric with a soft and flexible texture;

[0012] (2) Prepare denim garment fabric with clear texture and three-dimensional feel.

[0013] In a third aspect, the present invention provides a waterless denim garment, wherein the fabric of the waterless denim garment is woven from warp yarns and weft yarns without sizing, and both the warp yarns and the weft yarns are the aforementioned high-numerical-value, low-twist filament wrapped yarns.

[0014] The warp density of the greige fabric is 15-20% lower than that of the finished product, and the weft density of the greige fabric is 25-35% lower than that of the finished product. The weaving structure of the greige fabric is plain weave, twill weave, or satin weave.

[0015] If the texture direction in the printed pattern is right-slanted, then the twill direction of the fabric is left-slanted; if the texture direction in the printed pattern is left-slanted, then the twill direction of the fabric is right-slanted.

[0016] In a fourth aspect, the present invention provides a method for producing the above-mentioned waterless denim garment, comprising the following steps:

[0017] The raw fabrics for the aforementioned waterless denim garments undergo pretreatment processes such as singeing, shaping, boiling, bleaching, and drying. CAD pattern drawings for the denim garments are designed, and the patterns are digitally printed onto the pretreated raw fabrics using reactive ink. The garments are then cut and sewn.

[0018] The setting process involves immersing the greige fabric in a water tank before it enters the setting machine's oven, and then removing excess water using rubber rollers to ensure a greige fabric roll-off rate of 75%-80%. The setting machine uses an eight-section oven, with the temperatures of the eight sections from the entry direction to the exit direction as follows: 175±2℃, 175±2℃, 180±2℃, 180±2℃, 175±2℃, 175±2℃, 155±2℃, 155±2℃. The setting machine speed is 45-50 meters per minute, and the fabric width at the exit of the setting machine is 153-155cm.

[0019] The boiling, bleaching, and etching process is as follows: the shaped fabric is hot-washed at 60°C for 8-10 minutes, then oxygen-bleached and neutralized to remove oxygen, followed by hot washing at 60°C for 8-10 minutes, then etched with polishing enzymes and washed with water, and finally hot-washed at 45°C for 15 minutes before being removed from the vat; after being removed from the vat, it is dehydrated, opened, and dried.

[0020] The fabric drying process involves neutralizing and deoxygenating the fabric before it is removed from the vat, dehydrated and opened, and then dried using a setting machine at a temperature of 110-120℃ and a machine speed of 18-20 meters per minute, resulting in a fabric width of 150-152cm.

[0021] The oxygen bleaching process of the fabric uses a treatment solution 1 composed of hydrogen peroxide: 5 g / L; caustic soda flakes: 4 g / L; desizing agent M1011B: 2 g / L; stabilizer 2000B: 0.5 g / L; and oxygen bleaching stabilizer: 1 g / L. The temperature of the oxygen bleaching treatment solution is 95-98℃, and the treatment time is 40 minutes.

[0022] The treatment solution 2 used in the neutralization and deoxygenation process consists of: neutralizing acid: 1.5 g / L, and deoxygenating enzyme: 0.5 g / L. The neutralization and deoxygenation treatment is performed at a temperature of 50-55°C for 10 minutes.

[0023] The polishing enzyme etching wash is performed using 0.5 g / L of polishing enzyme at a temperature of 55-60°C for 20 minutes.

[0024] The entire process of boiling, bleaching, and etching the fabric involves processing the greige fabric within an overflow dyeing machine.

[0025] The CAD pattern drawing of the denim garment is in XLS format. This file is imported into Style3D software to generate a white model of the denim garment. Wash texture images and personalized wash element images (such as bone texture, snowflakes, fading, whiskers, frayed edges, distressed finish, wear, etc.) are obtained by scanning the actual denim garment. The scanned files are 300dpi JPG or PNG images. The wash texture images are processed using Style3DFabric software to generate a seamless 300dpi denim wash texture image that can be laid out horizontally and vertically, in JPG or PNG format. Photoshop software is used to process the washed denim element image, generating a 300dpi personalized washed denim element texture that blends seamlessly with the denim washed texture image. The denim washed texture image and the personalized washed denim element texture are then imported into a Style3D denim garment white model, generating a 3D denim garment file with both the texture and personalized washed elements. This 3D project file is used for automatic layout and quick export of a label image containing the texture and personalized washed elements. The label image is a printable denim garment pattern image in TIFF format with a resolution of 300dpi and a horizontal width ≤145cm.

[0026] The marker pattern is printed on the pre-treated greige fabric using an active ink digital printing machine. After the greige fabric is steamed, soaped, dried, and softened, it is automatically cut into pieces using a dual-head, dual-track asynchronous panoramic tracking laser cutting machine. The cut pieces are then sewn into waterless denim garments.

[0027] Preferably, the active ink digital printing machine uses an 8-color ink combination for printing, which includes: royal blue, black, cyan, magenta, yellow, black, royal blue, and orange-red, totaling 8 inks.

[0028] The beneficial effects of this invention are:

[0029] This invention provides a ready-to-wear denim garment that requires no washing and its production method, involving the entire production process from raw material design and selection, yarn structure design, fabric weaving technology, fabric pretreatment technology to denim pattern design and digital printing. Low-twist yarns can achieve a soft fabric texture, but they also result in reduced fabric flexibility, decreased hand elasticity, and unclear fabric texture. High-micron value cotton fibers have high maturity and coarse fiber diameters. Fabrics made from low-twist yarns are soft yet retain elasticity and flexibility. Because high-micron value yarns have a coarser diameter at the same yarn count, the fabric texture is more prominent, clear, and three-dimensional. Therefore, this invention uses high-micron value, low-twist filament wrapped yarn to weave fabric, which, when digitally printed, achieves the same soft, flexible texture and clear, three-dimensional fabric texture as traditional washed denim garments without the need for washing. Ready-to-wear denim garments produced according to the production method provided by this invention will become a new trend in denim garment production. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a high-numerical-value, low-twist filament wrapped yarn structure.

[0031] Figure 2 These are three sets of denim fabric pattern texture effect images; among them Figure 2 In Example A, the denim clothing fabric prepared in Example 3 is used. Figure 2 B is the denim clothing fabric prepared in Example 4; Figure 2 C refers to denim clothing fabric produced using digital inkjet printing, which is commercially available. Detailed Implementation

[0032] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] As mentioned earlier, denim garments with various styles such as snowflake, distressed, whiskered, frayed, vintage, and worn are currently very popular with consumers. However, these denim garments, made using traditional production processes, require a large amount of indigo and sulfur dyes to dye the yarn, followed by various physical and chemical garment washing processes, such as enzyme stone washing, sodium hypochlorite bleaching, hydrogen peroxide bleaching, potassium permanganate spraying, resin washing, and other hand-distressed washing. These processes consume large amounts of water, dyes, and chemical auxiliaries, and the discharged wastewater contains large amounts of harmful substances such as dyes, bleaching powder, phenolic compounds, azo compounds, hypochlorite, potassium metal, azo dyes, potassium permanganate, chromium, and cadmium, which are extremely harmful to the environment and represent an unsustainable production method.

[0034] To replace this unsustainable denim production method, digital printing machines are used to directly print the washed denim texture onto the fabric, which is then cut and sewn into garments. Denim garments produced this way do not require complex garment washing processes to showcase the denim texture and personalized wash elements. While digitally printed denim garments eliminate the need for multiple washing cycles and are environmentally friendly, the lack of garment washing results in unclear fabric textures, a stiff and unresponsive feel, and discomfort. Consequently, denim garments produced using this method have low market acceptance.

[0035] Based on this, the purpose of this invention is to provide a ready-made, water-washable denim garment with a clear, three-dimensional texture and a soft, flexible feel, as well as its production method. The high-micronaire, low-twist filament wrapped yarn prepared in this invention uses high-micronaire (≥5.0) cotton fiber. High-micronaire cotton fiber has a large diameter and high hollowness, resulting in yarn with higher bulkiness for the same yarn count. Combined with the low-twist spinning process, the yarn diameter is even larger, making the fabric's texture and three-dimensional effect more prominent, while simultaneously solving the problem of ordinary low-twist yarn being soft but not flexible. Using high-shrinkage FDY polyester filament as the wrapping filament wrapped cotton fiber structure solves the drawbacks of high-micronaire cotton fiber using the low-twist process, such as high yarn breakage rate, low spindle speed, and low spinning efficiency, significantly increasing spindle speed and improving spinning efficiency.

[0036] In the production of waterless denim garments, the fabric used in this invention is woven from warp and weft yarns. Both warp and weft yarns are high-molecular-weight, low-twist filament wrapped yarns. During the pretreatment process, the fabric undergoes a high-temperature environment, causing the high-shrinkage FDY polyester filaments in the high-molecular-weight, low-twist filament wrapped yarns to shrink. This shrinkage also causes the cotton fibers to shrink, making the yarns more fluffy. The denim garment fabric experiences a greater shrinkage ratio in both the warp and weft directions. The scouring and bleaching treatment under low-tension conditions in the overflow tank effectively controls and maintains this shrinkage rate. As a result, the denim garments produced by this invention have a lower weave tightness, a more flexible fabric feel, and a more three-dimensional visual and tactile effect compared to denim fabrics of the same weight in existing technologies.

[0037] Denim garments made from denim wash textures and personalized wash elements are often not commercially viable because the printed fabric texture is unclear, lacks three-dimensionality, is stiff and inflexible, differs significantly from traditional denim, and is uncomfortable to wear. This invention addresses this by using high-margin, low-twist filament wrapped yarn, a high-shrinkage FDY polyester filament wrapped cotton fiber structure. Through heat shrinkage, the high-shrinkage FDY polyester filament is embedded in the cotton fiber, giving the fabric a pure cotton feel. Denim garments made from woven fabric produced using this high-margin, low-twist filament wrapped yarn do not require complex indigo dyeing and sulfur dye over-dyeing, nor do they require tedious physical and chemical washing. They achieve the soft, flexible texture and clear, three-dimensional fabric characteristics of traditional washed denim garments. Furthermore, digital inkjet printing saves significant amounts of water, chemicals, and labor. The water-free denim garments produced using the method provided by this invention will become a new trend in denim garment production.

[0038] The specific embodiments of the present invention will be described in further detail below with reference to examples. The following detailed descriptions are illustrative and intended to provide further explanation of this application, rather than limiting the scope of the invention.

[0039] The treatment solution 1 used in the oxygen bleaching process of this invention consists of hydrogen peroxide: 5 g / L; caustic soda flakes: 4 g / L; desizing agent M1011B (purchased from: Guangdong Demei Fine Chemical Group Co., Ltd.): 2 g / L; stabilizer 2000B (purchased from: Shandong World Chemical Co., Ltd.): 0.5 g / L; and oxygen bleaching stabilizer (purchased from: Guangdong Demei Fine Chemical Group Co., Ltd.) 1 g / L.

[0040] The treatment solution 2 used in the neutralization and deoxygenation process consists of: neutralizing acid (purchased from Zhejiang Hongxin Dyeing and Chemical Materials Co., Ltd.): 1.5 g / L, and deoxygenase (purchased from Shandong Qiannuo Biotechnology Co., Ltd.): 0.5 g / L.

[0041] The polishing enzyme etching wash was performed using 0.5 g / L polishing enzyme (purchased from Shandong Qiannuo Biotechnology Co., Ltd.).

[0042] Example 1: Preparation of high-numerical-value, low-twist filament wrapped yarn

[0043] High-shrinkage FDY polyester filament with a boiling water shrinkage rate of 60%, a fineness of 90D, and a ply count of 96F was selected. Cotton fibers with a micronaire value of 5.0 and more than 85% having a length of not less than 28mm were fed into the spinning machine to prepare a high-micronaire low-twist filament wrapped yarn. The prepared high-micronaire low-twist filament wrapped yarn had a twist coefficient of 300, a count of 72.8 tex, and the proportion of high-shrinkage FDY polyester filament in the high-micronaire low-twist filament wrapped yarn was 20%. The high-micronaire low-twist filament wrapped yarn had a coreless structure, as shown in the figure. Figure 1 As shown.

[0044] Example 2: Preparation of high-numerical-value, low-twist filament wrapped yarn

[0045] High-shrinkage FDY polyester filaments with a boiling water shrinkage rate of 30%, a fineness of 30D, and a ply count of 36F were selected. Cotton fibers with a micronaire value of 5.2 and a length of at least 28mm (over 85%) were fed into a spinning machine to prepare a high-micronaire low-twist filament wrapped yarn. The prepared high-micronaire low-twist filament wrapped yarn had a twist coefficient of 270, a count of 72.8 tex, and contained 10% high-shrinkage FDY polyester filaments. The high-micronaire low-twist filament wrapped yarn had no core structure.

[0046] Example 3: Preparation of ready-made, water-free denim garments

[0047] (1) Pretreatment of waterless denim garment fabric

[0048] The warp and weft yarns, using high-margin, low-twist filament wrapped yarn prepared in Example 1, are used to weave denim garment fabric without sizing. After singeing, the fabric is impregnated with clean water and then squeezed out of excess water by rubber rollers to ensure a fabric roll-out rate of 75%-80%. The fabric is then placed in a hot air chamber of a setting machine for high-temperature setting. The setting machine uses an eight-section oven, with temperatures from the inlet to the outlet direction of 175±2℃, 175±2℃, and 180±2℃ respectively. The temperature is 180±2℃, 175±2℃, 175±2℃, 155±2℃, 155±2℃, with a setting speed of 50 meters / minute. The fabric width of the fabric exiting the setting machine is 153-155cm. The set fabric is then hot-washed at 60℃ for 10 minutes in an overflow dyeing machine, oxygen-bleached at 95℃ for 40 minutes, neutralized and deoxygenated at 50℃ for 10 minutes, hot-washed at 60℃ for 8 minutes, washed with polishing enzyme at 60℃ for 20 minutes, and hot-washed at 45℃ for 15 minutes before exiting the dyeing vat.

[0049] (2) Denim clothing styles and denim texture image design

[0050] The denim garment is a standard five-pocket style jeans. A CAD pattern drawing of the jeans was designed in XLS format and imported into Style3D software to generate a white model of the jeans. A pair of actual jeans was scanned to obtain its wash texture image and a set of personalized wash elements (bone texture, fading, whiskers, distressing, wear). The scanned files were 300dpi JPG images. Style3DFabric software was used to process the wash texture image, generating a seamless 300dpi denim wash texture image in JPG format. This software uses Photoshop to process the denim wash texture image set, generating a 300dpi personalized wash texture texture set that blends seamlessly with the denim wash texture image. The denim wash texture image and the personalized wash texture texture set are then imported into the Style3D denim white model to generate a 3D denim file with both denim wash texture and personalized wash elements. This 3D project file is then used to automatically lay out the pattern and quickly export a marker image with both denim wash texture and personalized wash elements. The marker image is a printable denim pattern image in TIFF format with a resolution of 300dpi and a horizontal width of 145cm.

[0051] (3) Digital printing and cutting and sewing with active ink

[0052] The marker pattern designed in step (2) was printed on the pre-treated greige fabric using an active ink digital printing machine. The fabric was then steamed at 105℃ for 10 minutes. After steaming, the fabric was washed, dried, and softened to obtain the finished product. The washing process after steaming was as follows: 60℃ hot water washing for 5 minutes → 80℃ 5g / L soap washing for 10 minutes → 45℃ warm water washing → cold water rinsing → drying. The softening temperature was 150℃, the machine speed was 35 meters / minute, the machine width was 150-152cm, and the auxiliary agent was hydrophilic softener: 15g / L (Guangdong Demei Fine Chemical Group Co., Ltd.). The fabric was automatically cut using a double-headed, double-track asynchronous panoramic tracking laser cutting machine, and then sewn into waterless denim garments.

[0053] Example 4: Preparation of ready-made, water-free denim garments

[0054] The only difference from Example 3 is that the warp and weft yarns are made of high-molecular-weight, low-twist filament wrapped yarn prepared in Example 2, which is woven into denim garment fabric without sizing.

[0055] Example 5: Fabric Softness and Hardness Performance Testing

[0056] The denim fabric prepared in Example 3 (Experimental Group 1), the denim fabric prepared in Example 4 (Experimental Group 2), and the same fabric with the same weave and weight cut from commercially available digitally printed denim garments (Experimental Group 3) were tested for softness and stiffness. The fabric softness and stiffness performance was tested using two methods: fabric crease recovery test and bending performance test. The specific testing methods are as follows:

[0057] Fabric crease recovery test: The acute / delay crease recovery angle (warp + weft) of the fabric was measured according to GB / T 3819-1997 Textiles - Determination of Fabric Crease Recovery (Recovery Angle Method). The smaller the acute / delay crease recovery angle, the worse the wrinkle resistance, the stiffer the fabric, and the worse the flexibility. The larger the acute / delay crease recovery angle, the better the wrinkle resistance, the softer the fabric, and the better the flexibility. The experiment was repeated 10 times, and the average value of the test results was recorded (Table 1).

[0058] Bending stiffness test: The bending properties of the fabric were tested according to GB / T 18318.1-2009 Textiles - Determination of bending properties (Part 1: Inclined plane method). The test results were indicated by the bending length (cm) in the warp and weft directions. The larger the value, the greater the stiffness of the fabric, the harder and stiffer the fabric, and the worse the comfort. Conversely, the softer and more flexible the fabric, the better the feel against the skin. The average value of the test was recorded (Table 1).

[0059] Table 1: Fabric Softness and Hardness Performance Testing

[0060]

[0061] Test results show that the present invention uses high-numerical-value, low-twist filament wrapped yarn as warp and weft yarns, and adopts the production method provided by the present invention to prepare a garment-ready, water-free denim fabric that is softer, has a soft and flexible texture, and has a better skin feel.

[0062] Example 6: Fabric Pattern Texture Clarity Performance Test

[0063] Five fabric testing professionals were selected to further test the pattern texture clarity of the three denim fabrics in Example 5. During testing, the inspectors observed the washed pattern texture at a distance of 50cm from the fabric. The visual inspection method followed Clause 2.5 of GB / T250-2008, using a standard D65 light source in a light box. The fabric was placed on a backing board at a 45° angle to the bottom of the light box (maintaining a 45° angle with the illumination light). The inspectors' observation direction was roughly perpendicular to the fabric surface. Sensory evaluation was conducted according to three levels: clear, blurry, and none. The pattern texture clarity rating was scored from 0 to 10, with higher scores indicating higher pattern texture clarity. The average score was recorded (Table 2). The pattern textures of the three denim fabrics are shown below. Figure 2 As shown.

[0064] Table 2: Fabric Pattern Texture Clarity Performance Test

[0065] Experimental group 1 9.5 9 8.5 9 10 9.2 Clear Experimental group 2 9 8.8 9 9.5 9 9.1 Clear Experimental group 3 4.5 5 4 4 4.5 4.4 Vague

[0066] Sensory evaluation results show that the high-numerical-value, low-twist filament wrapped yarn used in this invention as warp and weft yarns, and the production method provided by this invention, result in a clearer washed pattern texture in the finished denim garment fabric that does not require washing.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A waterless denim garment, characterized in that, The raw fabric of the waterless denim garment is woven from warp and weft yarns without sizing, and both the warp and weft yarns are high-numerical-value, low-twist filament wrapped yarns. The high micronaire low twist filament wrapped yarn has a filament wrapped cotton fiber structure. The filament is a high shrinkage FDY polyester filament with a shrinkage rate of 30%-60% in boiling water, and the micronaire value of the cotton fiber is ≥5.

0. The aforementioned waterless denim garments possess the characteristics of being soft and flexible, with clear and three-dimensional fabric textures, without requiring pre-washing.

2. The waterless denim garment according to claim 1, characterized in that, The twist coefficient of the high-numerical-value low-twist filament wrapping yarn is 270-300, the number range of the high-numerical-value low-twist filament wrapping yarn is 29-72.8tex, and the mass ratio of high-shrinkage FDY polyester filament in the high-numerical-value low-twist filament wrapping yarn is 10%-20%.

3. The waterless denim garment according to claim 1, characterized in that, In the high-numerical-value, low-twist filament wrapped yarn, more than 85% of the cotton fibers have a length of not less than 28mm.

4. The waterless denim garment according to claim 1, characterized in that, The fineness range of the high-shrinkage FDY polyester filament in the high-numerical-value low-twist filament wrapped yarn is 30D-90D, and the number of plies is 36F-96F.

5. The waterless denim garment according to claim 1, characterized in that, The warp density of the greige fabric is 15-20% lower than that of the finished product, and the weft density of the greige fabric is 25-35% lower than that of the finished product.

6. The waterless denim garment according to claim 1, characterized in that, The method for producing the waterless denim garment includes the following steps: (1) The raw fabric of the no-wash denim garment is subjected to pretreatments such as singeing, shaping, boiling, bleaching, and drying. (2) Design the CAD pattern of denim clothing, digitally print the pattern with reactive ink onto the pre-treated greige fabric, and cut and sew it. The shaping processing temperatures are, in sequence: 175±2℃, 175±2℃, 180±2℃, 180±2℃, 175±2℃, 175±2℃, 155±2℃, 155±2℃, the shaping speed is 45-50 meters / minute, and the shaping width is 153-155cm. The process flow of boiling, bleaching, and etching is as follows: the shaped fabric is hot-washed at 60℃ for 8-10 minutes, then oxygen-bleached and neutralized to remove oxygen, then hot-washed at 60℃ for 8-10 minutes, then etched with polishing enzymes and washed, then hot-washed at 45℃ for 15 minutes and removed from the vat, then dehydrated, opened and dried. The drying process is carried out at a temperature of 110-120℃, with a machine speed of 18-20 meters per minute and a fabric width of 150-152cm after drying.

7. The waterless denim garment according to claim 6, characterized in that, The oxygen bleaching process of the fabric uses a treatment solution consisting of hydrogen peroxide (5 g / L), caustic soda (4 g / L), desizing agent M1011B (2 g / L), stabilizer 2000B (0.5 g / L), and oxygen bleaching stabilizer (1 g / L). The temperature of the treatment solution is 95-98°C, and the treatment time is 40 minutes. The neutralization and deoxygenation treatment solution consists of: neutralizing acid; 1 Composition: 0.5 g / L, deoxygenase: 0.5 g / L; The temperature of the second treatment solution used for neutralization and deoxygenation is 50-55℃, and the treatment time is 10 minutes; The polishing enzyme etching wash is performed using 0.5 g / L of polishing enzyme at a temperature of 55-60°C for 20 minutes.

Images