Original ecological additive-free dyeing-free fabric treatment process

Abstract

The invention relates to the technical field of textile treatment, and discloses an original ecological additive-free dyeing-free fabric treatment process, which comprises the following steps: carrying out preliminary finishing on gray cloth to remove impurities and make the gray cloth structure more uniform; the gray cloth subjected to primary finishing is subjected to sealed soaking, wrapping slurry on the cotton yarn is softened through long-time water soaking and proper temperature, and the softness of the gray cloth is enhanced; the soaked gray cloth is subjected to high-temperature water washing, and through multiple times of water washing and precise temperature control, impurities are further removed, and the natural color and luster of the gray cloth are kept. Through an additive-free physical treatment process, impurities are effectively removed, the natural faint yellow color of the fabric is kept, the effects of softness, skin friendliness and lasting color and luster of the fabric are achieved, the problems of chemical residues and color fading are avoided, meanwhile, water resources, energy consumption and influences on the environment can be reduced, the safety and environmental friendliness of the fabric are improved, and the fabric is worthy of popularization and application. The requirements of the market on green textiles are met.

Description

Technical Field

[0001] The invention relates to the technical field of textile processing, in particular to an original ecological, additive-free and dye-free fabric processing process. Background Art

[0002] The processing technology of dyed fabrics usually includes a series of chemical and physical treatment steps to improve the appearance, feel and durability of the fabrics. The traditional dyeing process mainly uses chemical means such as bleaching, dyeing, softener treatment, etc. to treat natural fabrics such as cotton fibers and linen to obtain rich colors, soft feel and enhanced durability. This type of process makes the fabrics more attractive in the market when they leave the factory and improves their appearance and comfort.

[0003] The existing dyed fabric processing technology generally adopts chemical bleaching, dyeing and softening treatment. Chemical bleaching removes impurities and pigments in the fabric to provide a basis for dyeing, then dyes are added to give the fabric a variety of colors, and finally chemical softeners are used to increase the softness and skin-friendliness of the fabric. The effect achieved is bright color, soft feel, and good visual effect, which can meet the market demand for brightly colored and soft-touch fabrics.

[0004] Although the existing technology can achieve good visual and tactile effects, it still has some shortcomings. First, the chemical residues produced by chemical bleaching, dyeing and softening treatment in the traditional dyeing process can easily irritate human skin and have low safety. Second, this type of process is prone to fading after repeated washing, and the color is difficult to maintain stable for a long time. Finally, the existing process consumes a lot of water resources, and the discharge of chemical wastewater has an adverse impact on the environment. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an original ecological, additive-free and dye-free fabric processing process, which solves the problems of chemical residue, fading, environmental pollution and skin irritation caused by the use of chemical bleaching, dyeing and softeners in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a process for treating an original ecological non-additive and non-dyed fabric, comprising the following steps:

[0007] Perform preliminary finishing on the grey cloth to remove impurities and make the structure of the grey cloth more uniform;

[0008] The preliminarily finished grey cloth is sealed and soaked. Through long-term water immersion and appropriate temperature, the coating on the cotton yarn is softened and the softness of the grey cloth is enhanced.

[0009] The soaked grey cloth is washed with high-temperature water. Through multiple washings and precise temperature control, impurities are further removed and the natural color of the grey cloth is maintained.

[0010] Dehydrate and dry the washed grey cloth to provide a suitable state for subsequent physical treatment;

[0011] The dehydrated and dried grey cloth is subjected to carbon sanding treatment to improve the smoothness, texture clarity and smoothness of the cloth surface through physical grinding;

[0012] The carbon brushed grey cloth is steam pre-shrunk, and the softness and skin-friendliness of the grey cloth are further improved through steam splashing physical rubbing, so that the finished fabric maintains a natural state without chemical residues and a light yellow color.

[0013] Preferably, the preliminary arrangement includes:

[0014] Arrange and match the tanks;

[0015] Loose fabric joint;

[0016] Open abdomen;

[0017] Singeing.

[0018] Preferably, the sealing soaking comprises:

[0019] Put the finished grey cloth into a polyethylene barrel, flatten and compact it, then add clean water;

[0020] Seal and soak for 24 to 36 hours, keeping the temperature in the barrel at 28 to 33°C;

[0021] When the water in the bucket turns yellow and soupy, stop soaking.

[0022] Preferably, the high temperature water washing comprises:

[0023] After the fabric enters the vat, it is washed three times until the water in the vat is completely clear;

[0024] Heat up to 80°C at a rate of 2.5°C per minute and run for 45 minutes;

[0025] Continue to increase the temperature to 105°C at a rate of 3.5°C per minute and run for 20 to 30 minutes;

[0026] The temperature was lowered to 60°C at a rate of 1.5°C per minute, and then overflow cooling was performed.

[0027] Preferably, the dehydration and drying process includes:

[0028] The fabric is dehydrated after leaving the vat;

[0029] The dehydrated fabric is dried or shaped to prepare for the carbon sanding process.

[0030] Preferably, the carbon roughening treatment comprises:

[0031] Use a brush made of natural fibers and abrasive filaments to physically abrade the fabric;

[0032] Through physical grinding, the cloth surface is made smooth, the texture is clear and the hand feel is smooth.

[0033] Preferably, the steam preshrinkage treatment comprises:

[0034] Put the carbon brushed fabric into the steamer type pre-shrinking machine;

[0035] Improve the softness and smoothness of fabrics through steam splashing physical kneading.

[0036] Preferably, after the steam pre-shrinking treatment, the finished fabric has a slight residue of linseed oil and a light fragrance of paste.

[0037] Preferably, after high-temperature washing, the fabric out of the vat retains the original light yellow color of the grey cloth without any dyeing treatment.

[0038] Preferably, no chemical additives are added during the process, and the fabric is treated only by physical methods and natural materials to achieve environmentally friendly and pollution-free fabric properties.

[0039] The present invention provides an original ecological non-additive and non-dyed fabric processing process, which has the following beneficial effects:

[0040] 1. The present invention uses a pure physical process to process natural cotton fibers. Through the steps of sealed soaking, high-temperature water washing, carbon sanding and steam pre-shrinking, the fabric has a soft, smooth and skin-friendly touch while maintaining its natural properties, without any chemical additives residue, thereby ensuring the safety and comfort of the fabric.

[0041] 2. The present invention does not perform dyeing after high-temperature washing, and the fabric retains its natural light yellow color, presenting a gentle and natural visual effect, meeting consumers' demand for original and environmentally friendly fabrics, and making the finished product both beautiful and practical.

[0042] 3. The present invention significantly reduces the consumption of chemicals and water resources through an additive-free treatment process, reduces pollution emissions in the production process, achieves deep cleaning and softening of fabrics, and meets the goals of green production and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is the overall flow chart of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Please see attached Figure 1 The embodiment of the present invention provides an original ecological non-additive and non-dyeing fabric processing process, comprising the following steps:

[0046] The grey cloth is preliminarily finished to remove impurities and make the structure of the grey cloth more uniform. The preliminarily finishing process removes the floating hair, fibers and impurities on the surface of the grey cloth by physical methods, improves the uniformity of the cloth, and makes it more suitable for subsequent washing and grinding treatment, thereby ensuring a more uniform structure of the grey cloth, reducing impurity residues in subsequent processes, and improving the overall quality of the fabric;

[0047] The preliminarily finished grey cloth is sealed and soaked. Through long-term water immersion and appropriate temperature, the coating on the cotton yarn is softened and the softness of the grey cloth is enhanced. The gentle effect of water can slowly soften and remove impurities without the use of any chemical agents. This step enhances the softness of the fabric, making it easier to handle later, and maintains the natural fiber characteristics of the fabric. The coating can be softened without chemical treatment;

[0048] The soaked grey cloth is washed with high-temperature water. Through multiple washings and precise temperature control, impurities are further removed and the natural color of the grey cloth is maintained. High-temperature washing further removes residual impurities in the fabric through multiple rinses with clean water and precise control of gradual temperature increase and decrease. At the same time, the pores of the cotton fibers are further opened, which is beneficial to improving the air permeability and softness of the fabric and avoiding pollution caused by chemical bleaching and dyeing.

[0049] The washed grey cloth is dehydrated and dried to provide a suitable grey cloth state for subsequent physical treatment. Dehydration and drying remove moisture by physical means to ensure the stability of the fabric during subsequent treatment. The temperature is controlled within a reasonable range during the drying process to prevent the fabric from being over-dried or thermally damaged, and to retain its natural fiber structure. This step provides a good foundation for the subsequent carbon sanding process, avoiding the influence of residual moisture on the grinding effect, while ensuring the shape stability of the fabric;

[0050] Carbon sanding is performed on the dehydrated and dried grey cloth to improve the smoothness, texture clarity and smoothness of the cloth surface through physical grinding. Carbon sanding makes the fabric feel soft and smooth, further improving the skin-friendliness and comfort of the fabric, and achieving the effect of improving the touch and appearance without adding any chemical additives;

[0051] The carbon brushed grey cloth is steam pre-shrunk, and the softness and skin-friendliness of the grey cloth are further improved through steam splashing physical rubbing, so that the finished fabric can maintain a natural state and light yellow color without chemical residues. Steam pre-shrinkage uses the thermal energy of water vapor to evenly heat and physically rub the fabric fibers, thereby achieving the effect of pre-shrinkage and softening, which helps to reduce the shrinkage rate of the fabric and maintain the natural state of the fibers.

[0052] Please see attached Figure 1 In a preferred embodiment of the present invention, the preliminary arrangement includes:

[0053] The purpose of the sorting and matching cylinder division is to optimize the water flow and temperature distribution in the subsequent processing flow, so that the grey cloth in each cylinder is evenly heated and stressed under the same process conditions, thereby avoiding differences in processing effects caused by inconsistent fabric specifications;

[0054] Loosening joint: The loosening joint adjusts the tightness of the fabric so that the fabric can stretch and absorb water freely during the water immersion and heating processes, making the treatment more uniform. The loosening process eliminates the internal stress of the fabric, which helps to obtain good processing results in subsequent processes.

[0055] Opening the abdomen: the fabric is unfolded into a flat shape, which avoids the problem of uneven contact between the outer and inner layers of the roll cloth during the treatment process, so that the entire fabric surface can fully contact with the treatment liquid, ensuring that all parts can receive the same treatment;

[0056] Singeing is the process of using flames to instantly heat the fabric surface, so that the floating hair on the surface is quickly carbonized or melted without affecting the main structure of the fabric. This process helps to improve the smoothness of the fabric surface and prevent the surface fibers from fuzzing during subsequent handling or wearing.

[0057] Please see attached Figure 1 In a preferred embodiment of the present invention, the sealing soaking comprises:

[0058] Put the finished grey cloth into a polyethylene barrel, flatten and compact it, then add clean water. Flatten and compact the cloth and put it into the barrel to ensure that the water acts evenly on the surface of the cloth during the soaking process, avoiding uneven water flow caused by wrinkles or curls of the cloth. In addition, the polyethylene barrel material has good corrosion resistance and heat preservation, which can keep the water quality and temperature stable during the soaking process.

[0059] Seal and soak for 24 to 36 hours, and keep the temperature in the barrel at 28 to 33°C. This temperature range can provide the best fiber water absorption environment, and the sealed state helps to avoid water pollution and temperature fluctuations, so that the fabric can be softened evenly and deeply. At the same time, the use of chemical softeners is avoided, which meets the environmental protection and pollution-free process requirements and maintains the natural properties of cotton fibers.

[0060] When the water in the bucket turns yellow and becomes soup-like, stop soaking. During the soaking process, the water turns yellow and becomes soup-like because the sizing layer and other impurities on the surface of the cotton yarn are dissolved in the water. This indicates that the softening process of the fabric is basically completed. By monitoring the soaking progress through the changes in water color, the removal effect of the sizing layer can be accurately controlled, while avoiding the impact of excessive soaking on fiber properties.

[0061] Please see attached Figure 1 In a preferred embodiment of the present invention, high temperature water washing comprises:

[0062] After the fabric enters the vat, it is washed three times until the water in the vat is completely clear. After three washes, the surface of the fabric is thoroughly cleaned to ensure that the subsequent heating and softening treatments will not be interfered by impurities. Multiple washes not only improve the cleaning effect, but also maintain the natural state of the fabric, which helps the finished fabric to be environmentally friendly and skin-friendly;

[0063] The temperature is raised to 80°C at a rate of 2.5°C per minute for 45 minutes. The gradual heating process allows the fabric fibers to receive a slow and even thermal effect, which is conducive to further opening the pores of the fibers and facilitating the deep removal of impurities. The constant temperature treatment temperature of 80°C can effectively soften the fiber structure while avoiding fiber damage caused by excessive temperature, thereby reducing wrinkles and uneven shrinkage problems;

[0064] Continue to heat up to 105°C at a rate of 3.5°C per minute for 20 to 30 minutes. By controlling the heating rate to reach a high temperature of 105°C, the starch and impurities on the fiber surface can be further softened, and deep cleaning can be achieved without adding any chemical additives. This temperature can dissolve residual grease and impurities to the greatest extent, making the cleaning effect of the fabric more thorough;

[0065] The temperature is lowered to 60℃ at a rate of 1.5℃ per minute, and then overflow cooling is performed. Gradual cooling can effectively avoid thermal stress damage to fabric fibers caused by sudden temperature drops, and keep the fabric structure stable during the cooling process. The overflow cooling process allows the fabric to maintain softness while slowly cooling, and further cleans away impurities remaining after high-temperature washing.

[0066] Please see attached Figure 1 In a preferred embodiment of the present invention, the dehydration and drying process comprises:

[0067] After the fabric is taken out of the vat, it is dehydrated. The dehydration process uses physical pressure to squeeze out excess water in the fabric, reducing the humidity of the fabric to a reasonable range, effectively preventing the fabric from being affected by excessive moisture and affecting the uniformity of subsequent processing. Moderate pressure ensures that the fabric will not be over-squeezed, avoiding uneven stress distribution inside the fiber;

[0068] The dehydrated fabric is dried or shaped to prepare for the carbon sanding process. Drying evaporates the water by heating, gradually reducing the moisture content of the fabric to a stable level, thereby ensuring the shape stability of the fabric. The shaping treatment can be carried out during the drying process, so that the fabric is fixed in width and weight by traction under heating to prevent deformation or shrinkage in subsequent processing.

[0069] Please see attached Figure 1 In a preferred embodiment of the present invention, the carbon roughening process comprises:

[0070] Use a brush made of natural fiber and abrasive filaments to physically grind the fabric. The brush made of natural fiber and abrasive filaments has high flexibility and wear resistance, and can generate moderate friction on the surface of the fabric. This friction grinds and polishes the tiny fibers on the fabric without destroying the fiber structure of the fabric, removes floating hair, and improves the smoothness of the fabric. This physical grinding method effectively removes tiny impurities and floating hair on the fabric, making the fabric smoother and providing a comfortable touch for subsequent use. At the same time, natural fiber bristles avoid the interference of chemical substances, meet environmental protection requirements, and keep the finished fabric natural and additive-free.

[0071] Physical grinding makes the fabric surface smooth, with clear texture and smooth hand feel. Physical grinding smoothes the cilia on the fiber surface through fine friction, making the fabric texture clearer. This treatment method will not damage the main structure of the fiber, ensuring the integrity and strength of the fabric surface, while improving the fineness and gloss of the fabric surface. Through carbon sanding treatment, the fabric surface not only has a smooth hand feel, but also presents a finer texture effect, making the fabric reach a higher quality both visually and tactilely.

[0072] Please see attached Figure 1 In a preferred embodiment of the present invention, the steam pre-shrinkage treatment comprises:

[0073] The carbon brushed fabric is placed in a steamer-type pre-shrinking machine. The steamer-type pre-shrinking machine uses steam pressurization in a closed space to fully activate the fabric fibers under moderate temperature and humidity. The uniform placement of the fabric ensures that the steam can be evenly distributed on every part of the fabric, thereby ensuring the consistency of the pre-shrinking effect, avoiding the problem of uneven shrinkage caused by uneven temperature and humidity, and providing stable dimensional characteristics for the fabric;

[0074] Through steam splashing physical kneading, the softness and smoothness of the fabric are improved. Steam splashing kneading uses the penetrating effect of high-temperature steam to evenly diffuse the moisture and heat inside the fiber, causing the fiber to expand and gradually restore its natural elasticity. Through steam splashing kneading treatment, the softness and smoothness of the fabric are significantly improved, making the finished fabric feel more comfortable and have good skin-friendliness.

[0075] Please see attached Figure 1 In a preferred embodiment of the present invention, after the steam pre-shrinking treatment, the finished fabric has a slight residue of cotton and a faint fragrance of paste.

[0076] Please see attached Figure 1 In a preferred embodiment of the present invention, after high-temperature washing, the fabric out of the vat retains the original light yellow color of the grey cloth without any dyeing treatment.

[0077] Please see attached Figure 1 In a preferred embodiment of the present invention, no chemical additives are added during the process, and the fabric is treated only by physical methods and natural materials to achieve environmentally friendly and pollution-free fabric properties.

[0078] Example 1: Additive-free sealing immersion and high-temperature water washing treatment

[0079] Embodiments of the present invention:

[0080] In the process of the present invention, the natural cotton fiber fabric is initially processed and then put into a sealed polyethylene barrel for soaking for 24 to 36 hours, and the temperature is maintained at 28 to 33°C until the water is in a soup state. After soaking, it is washed with high-temperature water, and the temperature is gradually raised to 105°C to maintain the natural color of the fabric. No chemical agent is added during this treatment process.

[0081] Prior art embodiments:

[0082] Traditional fabric treatment processes usually add chemical additives (such as enzymes, bleaching agents, etc.) during the soaking or washing stage to accelerate the removal of the starch layer, which requires frequent water changes and imprecise temperature control. Although this treatment effectively removes impurities, it leaves a high level of chemical residues, consumes a lot of water resources, and damages the natural color of the fabric.

[0083] The invention maintains the natural color through physical soaking and high-temperature water washing without additives, reduces the use of water resources and chemicals, and achieves a safe and environmentally friendly treatment effect.

[0084] Example 2: Carbon sanding process makes the fabric soft and skin-friendly

[0085] Embodiments of the present invention:

[0086] In the carbon sanding process of the present invention, a brush made of natural fiber and abrasive filament is used to physically grind the fabric, so that the fabric surface is smooth, the texture is clear, and the hand feel is smooth. This process completely relies on physical sanding without adding any chemical softener.

[0087] Prior art embodiments:

[0088] Chemical softeners are often added to the traditional fabric sanding process to give the fabric a soft feel, but the chemical softeners may remain in the fabric and potentially irritate the skin. In addition, the softness of the fabric is not long-lasting and requires multiple re-treatments.

[0089] Comparative advantages:

[0090] The carbon sanding process of the present invention improves the softness and skin-friendliness of the fabric only by physical means, without the need for chemical additives, thereby ensuring the safety and environmental protection of the fabric and providing a lasting soft feel.

[0091] Example 3: Steam pre-shrinking improves softness and dimensional stability

[0092] Embodiments of the present invention:

[0093] In the present invention, the carbon-brushed fabric is put into a steamer-type preshrinking machine, and the fibers are expanded and elasticized by physical kneading in a steam-spraying manner, thereby improving the softness and smoothness of the fabric and maintaining the stability of the size.

[0094] Prior art embodiments:

[0095] The traditional pre-shrinking process uses chemical agents to soften the fibers, and then dry heat setting to improve softness and dimensional stability. However, chemical softening makes the fiber structure of the fabric vulnerable to damage, and the fabric is prone to lose elasticity after washing, and the softness decreases over time.

[0096] Comparative advantages:

[0097] The steam preshrinking process of the present invention improves the softness and dimensional stability only by the action of steam, maintains the natural structure of the fiber, ensures the lasting softness and environmental protection characteristics of the fabric, and is significantly superior to the traditional chemical preshrinking process.

[0098] Comparative experiment 1: water resources and energy consumption comparison test

[0099] Experimental purpose: To verify the water resource and energy saving effect of the process of the present invention.

[0100] Experimental setup

[0101] Experimental group settings

[0102] Experimental group (process of the present invention): the additive-free treatment process of the present invention was adopted, including the steps of sealing immersion, high-temperature water washing, carbon grinding and steam pre-shrinkage, and the water resource consumption and energy consumption of each step were recorded.

[0103] Control group setting

[0104] Control group A: Chemical softener treatment: Chemical softener was used during the sealed soaking and water washing process to help soften the fiber and remove impurities, and the water resources and energy consumption were recorded.

[0105] Control group B: Chemical bleach + dyeing treatment: bleach and dye were added during the washing process, and the water and energy consumption were recorded.

[0106] Experimental procedures

[0107] Preliminary sorting: Cut the natural cotton fiber grey cloth from the same batch into three equal parts, which were used as samples of the experimental group, control group A and control group B respectively.

[0108] Water and energy consumption records: Record the water usage (in L) and energy consumption (in kWh) of each group in the following processes:

[0109] Sealed soaking stage: record the water usage and energy consumption during the soaking process.

[0110] High-temperature water washing stage: record the water resources and energy consumption used for heating and multiple water washing.

[0111] Data collection: After completing each treatment group, summarize the water use and energy consumption data for each group.

[0112] The comparative experimental data are shown in Table 1:

[0113] Table 1 Water resources and energy consumption comparison test data table

[0114] Group Water consumption (L) Energy consumption (kWh) Experimental Group 120 15.2 Control group A 160 18.5 Control group B 185 22.1

[0115] From the data in Table 1, we can get:

[0116] Water consumption: The experimental group (process of the present invention) consumed a total of 120 L of water in the sealed immersion and high-temperature water washing stages, which was lower than that of the control group A (160 L) and the control group B (185 L). This indicates that in the absence of chemical softeners or bleaches, the process of the present invention achieves higher water resource utilization efficiency through physical treatment.

[0117] Energy consumption: The total energy consumption of the experimental group was 15.2 kWh, which was lower than that of the control group A (18.5 kWh) and the control group B (22.1 kWh). This result shows that the process of the present invention optimizes the temperature and water flow control during the heating and cleaning processes, and can achieve sufficient treatment while reducing energy consumption.

[0118] Comparative experiment 2: Color retention comparison test

[0119] Experimental purpose: To verify the advantages of the process of the present invention in maintaining the natural color of fabrics.

[0120] Experimental setup

[0121] Experimental group settings

[0122] Experimental group (process of the present invention): The additive-free treatment process of the present invention was used to wash the fabric with high temperature water without dyeing, and the natural light yellow color of the cotton fiber was retained. The initial color value was recorded and the color difference change was detected after simulated washing.

[0123] Control group setting

[0124] Control group A: Chemical bleaching treatment: The fabric was chemically bleached without dyeing. The initial color value was recorded, and the color difference change was detected after simulated washing.

[0125] Control group B: Chemical bleaching + dyeing treatment: The fabric was first chemically bleached and then dyed. The initial color value was recorded, and the color difference change was detected after simulated washing.

[0126] Experimental procedures

[0127] Preliminary treatment: Divide the natural cotton fiber grey cloth of the same batch into three equal parts, which are used as samples of the experimental group, control group A and control group B respectively.

[0128] Initial color detection: Use a colorimeter to measure the initial color value of each group of samples and record the RGB color value as a comparison benchmark.

[0129] Simulated cleaning: Place each group of samples in clean water and clean them continuously for 10 times at a temperature of 40°C to simulate the effect of multiple cleanings in daily use.

[0130] Color change detection: Use the colorimeter again to measure the color change after cleaning, and calculate the color difference change value (ΔE) of each group of samples.

[0131] The comparative experimental data are shown in Table 2:

[0132] Table 2 Pharmacokinetic comparison data

[0133] Group Initial RGB value RGB value after cleaning Color difference ΔE Experimental Group (200,190,160) (198,189,158) 2.5 Control group A (210,210,210) (202,198,197) 8.9 Control group B (220,180,160) (200,160,145) 15.3

[0134] From the data in Table 2, we can get:

[0135] The fabric treated by the process of the present invention can still maintain its natural light yellow color after multiple washings, showing an excellent color retention effect. In contrast, the fabric in the control group treated by traditional chemical bleaching and dyeing changes color significantly and fades unevenly after multiple washings, verifying the innovative advantage of the process of the present invention in maintaining natural color.

[0136] Comparative experiment 3: Chemical residue and safety comparison test

[0137] Experimental purpose: To verify the advantages of the chemical-free treatment process of the present invention in terms of chemical residues and skin safety.

[0138] Experimental setup

[0139] Experimental group settings

[0140] Experimental group (process of the present invention): The fabric was treated with the additive-free treatment process of the present invention to detect chemical residues (such as formaldehyde, heavy metals, etc.) and skin irritation.

[0141] Control group setting

[0142] Control group A: Chemical bleaching treatment: The fabric was bleached with chemical bleach and tested for chemical residues and skin irritation.

[0143] Control group B: Chemical bleaching + dyeing: The fabrics were chemically bleached and dyed to detect chemical residues and skin irritation.

[0144] Experimental procedures

[0145] Sample preparation: Divide the natural cotton fiber grey cloth of the same batch into three equal parts, which are used as samples of the experimental group, control group A and control group B respectively.

[0146] Chemical residue detection: Use standard chemical analysis methods to detect the formaldehyde content (mg / kg), heavy metal content (ppm) and chemical additive residues in each group of samples, and record the measurement data.

[0147] Skin irritation test: each group of sample fabrics was placed in contact with a skin simulation device, kept at 37°C and 70% humidity for 48 hours, and the irritation score was recorded (0-5 points, 0 for no irritation and 5 for severe irritation).

[0148] The comparative experimental data are shown in Table 3:

[0149] Table 3 Chemical residue and safety comparison test data

[0150]

[0151] From the data in Table 2, we can get:

[0152] Chemical residues: The formaldehyde content of the experimental group (process of the present invention) was less than 0.1 mg / kg, the heavy metal content was less than 0.01 ppm, and no chemical residues were detected; the control groups A and B showed higher formaldehyde and heavy metal residues, respectively, and various chemical auxiliaries residues were detected in the chemical bleaching and dyeing processes;

[0153] Skin irritation: The skin irritation score of the experimental group was 0, indicating no skin irritation; the score of the control group A was 2, indicating mild irritation; the score of the control group B was 4, indicating moderate to severe irritation;

[0154] The experimental results show that the present invention has obvious innovative advantages in terms of safety and environmental protection.

[0155] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An original ecological non-additive and non-dyeing fabric processing process, characterized in that: The following steps are involved: Perform preliminary finishing on the grey cloth to remove impurities and make the structure of the grey cloth more uniform; The preliminarily finished grey cloth is sealed and soaked. Through long-term water immersion and appropriate temperature, the coating on the cotton yarn is softened and the softness of the grey cloth is enhanced. The soaked grey cloth is washed with high-temperature water. Through multiple washings and precise temperature control, impurities are further removed and the natural color of the grey cloth is maintained. Dehydrate and dry the washed grey cloth to provide a suitable grey cloth state for subsequent physical treatment; The dehydrated and dried grey cloth is treated with carbon sanding to improve the smoothness, texture clarity and smoothness of the cloth surface through physical grinding; The carbon brushed grey cloth is steam pre-shrunk, and the softness and skin-friendliness of the grey cloth are further improved through steam splashing physical rubbing, so that the finished fabric maintains a natural state without chemical residues and a light yellow color.

2. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The preliminary arrangement includes: Arrange and match the cylinders; Loose fabric joint; Open abdomen; Singeing.

3. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The sealing immersion comprises: Put the finished grey cloth into a polyethylene barrel, flatten and compact it, then add clean water; Seal and soak for 24 to 36 hours, keeping the temperature in the barrel at 28 to 33°C; When the water in the bucket turns yellow and soupy, stop soaking.

4. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The high temperature water washing comprises: After the fabric enters the vat, it is washed three times until the water in the vat is completely clear; Heat up to 80°C at a rate of 2.5°C per minute and run for 45 minutes; Continue to increase the temperature to 105°C at a rate of 3.5°C per minute and run for 20 to 30 minutes; The temperature was lowered to 60°C at a rate of 1.5°C per minute, and then overflow cooling was performed.

5. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The dehydration and drying process comprises: The fabric is dehydrated after leaving the vat; The dehydrated fabric is dried or shaped to prepare for the carbon sanding process.

6. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The carbon grinding process comprises: Use a brush made of natural fibers and abrasive filaments to physically abrade the fabric; Through physical grinding, the cloth surface is made smooth, the texture is clear and the hand feel is smooth.

7. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: The steam pre-shrinkage treatment comprises: Put the carbon brushed fabric into the steamer type pre-shrinking machine; Improve the softness and smoothness of fabrics through steam splashing physical kneading.

8. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: After steam pre-shrinking, the finished fabric has a slight residue of flower seeds and a light paste fragrance.

9. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: After high-temperature washing, the fabric out of the vat retains the original light yellow color of the grey cloth without any dyeing treatment.

10. The original ecological non-additive and non-dyeing fabric processing process according to claim 1 is characterized in that: No chemical additives are added during the process, and the fabric is only treated through physical methods and natural materials to achieve environmentally friendly and pollution-free fabric properties.

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