Dyeing and finishing liquid for reducing hair removal rate index of home textile sanded fabric and printing and dyeing process

Abstract

The invention belongs to the technical field of textile dyeing and finishing processes, and particularly relates to a dyeing and finishing liquid for reducing the hair removal rate index of home textile sanded fabric and a printing and dyeing process. According to the dyeing and finishing liquid, the acrylic acid adhesive, the hydrophilic softening agent and the neutralizing acid are used in a compatible manner, so that the purpose of reducing the hair removal rate of the home textile sanded fabric is achieved. According to the process disclosed by the invention, an acrylic acid adhesive and a hydrophilic softening agent used in a pigment printing link are added in the after-finishing, and through roll padding, the linting rate of the front and back surfaces of various brushed fabrics can be effectively reduced. The fabric obtained through the printing and dyeing process is soft and smooth in hand feeling and high in cost performance; various fastnesses such as wet rubbing, dry rubbing, washing fastness and dry cleaning fastness are excellent; the compatibility is good, roller sticking is avoided, and the roller is easy to clean; color spots are not easy to generate; the stability is good, and the front-back consistency is good.

Description

Technical Field

[0001] The invention belongs to the technical field of textile dyeing and finishing technology, and in particular relates to a dyeing and finishing liquid and a printing and dyeing process for reducing the depilation rate index of home textile sanded fabric. Background Art

[0002] In the printing and dyeing process of brushed fabrics of household textiles, various biological enzymes are usually added to make it easier for various dyes and chemicals to combine with the fabric fibers, and silicone softeners are added in the fabric finishing process to improve the feel of the brushed fabric. Both of these will damage the fibers themselves to varying degrees, forming a large amount of broken hair dust hidden in the cloth. When it is used or washed, it will lose hair to varying degrees. In severe cases, the appearance of the cloth will undergo irreversible changes.

[0003] In the prior art, such as the invention patent of CN105755764A, dyeing factories add anti-pilling agents in post-finishing to improve the depilation rate. Such products are usually water-based polyurethane polymers, which can form a network structure with a certain degree of cross-linking with the fiber structure, effectively preventing and reducing fiber entanglement, pilling and falling, thereby greatly improving the depilation rate of the fabric. However, the addition of anti-pilling agents will also cause the fabric to feel astringent and hard, which cannot meet the requirements of home textile products for the feel.

[0004] Before being rubbed, fabrics generally have more or less hairiness; after being rubbed by external force, these hairiness will be stretched out little by little, forming longer hair. When the length of the hairiness reaches a point where it can be entangled, the hairiness will be tangled into a ball and gradually shrink; when this ball of hairiness continues to be subjected to external force, it may fall off the fabric. The surface of the fabric will become hairy again.

[0005] Currently, the most commonly used printing and dyeing process to improve the depilation rate of home textile brushed fabrics is based on the FZ / T62020-2015 "Brushed Fabric Quilt Cover" standard: the qualified product with the indicator "depilation rate" is 1%; that is, after rubbing the fabric 1000 times on the test equipment, the floating hair is 1% of the fabric weight.

[0006] In the current existing technology, the hair removal rate of the sanded fabric produced by the active dyeing process before washing is 1.2%, which cannot meet the 1% requirement for qualified products; the hair removal rate after washing (machine washing at 40℃, drying) is between 1.2% and 1.4%, which cannot meet or even reach the qualified product requirements. At present, the front side of the sanded fabric produced by the coating dyeing process meets the customer standards before washing, but the 1.2% on the back side does not meet the minimum requirements for qualified products. After washing (machine washing at 40℃, drying), both the front and back sides are unqualified. Summary of the invention

[0007] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a dyeing and finishing liquid and a printing and dyeing process for reducing the depilation rate index of home textile brushed fabrics. The process described in the present invention aims at the fact that the depilation rate of home textile brushed fabrics generally cannot meet the qualified product requirements of FZ / T 62020-2015 "Brushed Fabric Quilt Cover". An acrylic adhesive and a hydrophilic softener used in the paint printing process are added in the post-finishing process. Through roller impregnation, the depilation rate of the front and back surfaces of various types of brushed fabrics can be effectively reduced.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] A dyeing and finishing liquid for reducing the depilatory rate index of home textile sanded fabrics comprises the following components in parts by weight: 2-4 parts of acrylic ultra-high molecular polymer emulsion adhesive; 1-2 parts of hydrophilic fatty acid softener FX; 1-2 parts of softener soft beads DT-7; and neutralizing acid.

[0010] The functions of each component in this formula are as follows:

[0011] Acrylic ultra-high molecular weight polymer emulsion adhesive is actually an adhesive. If the usage exceeds this ratio, it will cause sticking to the rollers during the tentering machine production process, resulting in uneven rolling of the fabric and excessive difficulty in cleaning, which is not conducive to production. If the usage is too small, the film-forming effect of the adhesive cannot be achieved and the dry friction fastness will be lost.

[0012] The actual function of the hydrophilic fatty acid softener FX is to neutralize the hydrophilicity loss caused by the film formation of the acrylic ultra-high molecular polymer emulsion adhesive.

[0013] Softener beads DT-7, the actual function of this component is to neutralize the loss of hand feel caused by the film formation of acrylic ultra-high molecular polymer emulsion adhesive, so as to achieve the softness requirement of home textile sanding products. The best compatibility with the adhesive is about 1:2.

[0014] Neutralizing acid is used to adjust the pH of the fabric surface to between 4.8 and 7.5. The dosage of this component should be determined according to the overall pH of the formulation.

[0015] The various components in this formula are not simply mixed, but are compatible with each other to produce a synergistic effect, effectively reducing the hair loss rate on the front and back of various types of brushed fabrics.

[0016] The present invention also discloses a printing and dyeing process for reducing the depilation rate index of home textile sanded fabrics. The process uses any of the above-mentioned dyeing and finishing liquids for printing and dyeing, and specifically includes the following process steps:

[0017] (1) preparing a dyeing and finishing liquid: mixing an acrylic ultra-high molecular weight polymer emulsion adhesive, a hydrophilic fatty acid softener FX, and a softener soft bead DT-7 according to the proportions described in claim 1, adding a neutralizing acid to adjust the pH to 4.8-7.5, and preparing a dyeing and finishing liquid;

[0018] (2) Liquid rolling treatment: The dyeing and finishing liquid is evenly rolled onto the front and back sides of the brushed fabric through rollers;

[0019] (3) Drying and shaping: The fabric after liquid pressing is sent to the flat-width tentering machine, and passes through each drying chamber in turn, and is dried and shaped according to the set temperature gradient.

[0020] Preferably, in the liquid squeezing treatment process in step (2), the squeezing rate is 60%-80%, and the squeezing pressure is stabilized at 0.3±0.1 MPa.

[0021] Preferably, the process is implemented on a flat-width tentering machine with at least 10 drying chambers to ensure that the pressure of the setting machine and the rolling mill is stable at 0.3±0.1MPa; a carbon powder rolling mill (EPDM rubber) is used to prevent ordinary rubber rollers from etching the rolling mill, thereby affecting the uniformity and efficiency of the rolling mill; the total drying time is 3-5 minutes.

[0022] Preferably, the temperature distribution of each drying chamber is as follows:

[0023] Drying chamber 1: 155±2℃, drying chamber 2: 165±2℃, drying chamber 3: 165±2℃, drying chamber 4: 165±2℃, drying chamber 5: 165±2℃, drying chamber 6: 165±2℃, drying chamber 7: 165±2℃, drying chamber 8: 165±2℃, drying chamber 9: 165±2℃, drying chamber 10: 155±2℃.

[0024] Preferably, the pH of the fabric surface should be controlled at 4.8-7.5.

[0025] Preferably, in the process described in step (3), before the fabric enters the drying chamber from the open-width tentering frame, the fabric surface is humidified by a pre-steam wetting device to prevent excessive changes in the fabric surface humidity and reduce fiber strength loss; and at the same time, the fabric surface is dried by blowing air up and down.

[0026] Preferably, in the process described in step (3), the fabric leaving the drying chamber is quickly cooled and conditioned by cold air at 30±5°C and 10Hz, and then the fabric surface is humidified by a falling cloth wetting device to prevent the fabric from drying out and damaging the fiber strength.

[0027] Preferably, a static elimination roller is installed on the cloth dropping device to prevent floating hair from appearing on the fabric.

[0028] Preferably, the falling cloth is wetted to increase strength to prevent large changes in the humidity on the cloth surface from causing damage to the film formed on the cloth surface.

[0029] Beneficial Effects

[0030] The invention discloses a dyeing and finishing liquid and a printing and dyeing process for reducing the depilation rate index of home textile sanded fabrics. The dyeing and finishing liquid described in the patent is used in combination with an acrylic adhesive, a hydrophilic softener and a neutralizing acid, thereby achieving the purpose of improving the depilation rate of home textile sanded fabrics.

[0031] The printing and dyeing process described in this patent uses a fixed ratio interval to finish the sanded fabric, which can obtain a good feel and depilation rate, and meet the daily use conditions of home textile sanded fabrics. Compared with the traditional use of water-based polyurethane polymer anti-pilling agents to solve the problem of sanded cloth depilation rate, the fabric obtained by the printing and dyeing process described in this patent has a soft and smooth feel; extremely soft feel, high cost-effective product; excellent fastness (wet rubbing, dry rubbing, washing fastness, dry cleaning fastness); good compatibility, non-stick roller, easy to clean roller; not easy to produce color spots; good stability, good consistency before and after.

[0032] The process of the present invention can significantly reduce the depilation rate index of the front and back sides of conventional reactive printed and dyed sanded fabrics and conventional coating printed and dyed sanded fabrics before washing and the depilation rate index of the back and front sides after washing, while also taking into account the depilation rate and the soft feel of the sanded fabric.

[0033] The process described in the present invention aims at the fact that the hair removal rate of home textile sanded fabrics generally cannot meet the qualified product requirements of FZ / T 62020-2015 "Sanded Fabric Quilt Cover". In the post-finishing process, acrylic adhesives and hydrophilic softeners used in the pigment printing process are added, and the hair removal rates of the front and back surfaces of various sanded fabrics are effectively reduced through roller padding. It has been verified that the hair removal rate of the front side before washing is 0.2%, the hair removal rate of the back side before washing is 0.2%, the hair removal rate of the front side after washing (machine washing at 40°C, drying) is 0.6%, and the hair removal rate of the back side after washing (machine washing at 40°C, drying) is 0.2%.

[0034] The sanded fabric produced by this process formula is extremely soft, with excellent fastness (wet rubbing, dry rubbing, washing fastness, dry cleaning fastness), and can meet the first-class requirements of GB / T "22796 Quilts, Quilt Covers and Other Bedding Products"; the formula has good compatibility with water, does not stick to the roller, and is easy to clean by machine. The formula is stable, the effect is consistent before and after, and it is not easy to produce color spots. DETAILED DESCRIPTION

[0035] Hereinafter, the present invention will be described in detail. Before describing, it should be understood that the terms used in this specification and the appended claims should not be interpreted as being limited to the general meaning and dictionary meaning, but should be interpreted according to the meaning and concept corresponding to the technical aspects of the present invention on the basis of the principle that the inventor is allowed to appropriately define the terms for the best interpretation. Therefore, the descriptions presented here are only preferred examples for illustrative purposes and are not intended to limit the scope of the present invention, so that it should be understood that other equivalents or improvements can be obtained therefrom without departing from the spirit and scope of the present invention.

[0036] The following examples are only listed as examples of embodiments of the present invention and do not constitute any limitation to the present invention. It can be understood by those skilled in the art that modifications within the scope of the essence and concept of the present invention fall within the scope of protection of the present invention. Unless otherwise specified, the reagents and instruments used in the following examples are all commercially available products.

[0037] Terminology explanation:

[0038] Hair loss rate: In international standards, it is an indicator used to assess the degree of hair loss of fabrics. There are currently two main methods for testing the hair loss rate of fabrics, namely the washing method and the friction method. The common point of these two methods is that they test the difference in weight of the brushed fabric before and after washing or friction.

[0039] Sueding: A fabric treatment process in the printing and dyeing industry, in which the cloth is rubbed against the grinding roller of the sanding machine to form a layer of short fluff on the surface of the fabric.

[0040] Example 1

[0041] A dyeing and finishing liquid for reducing the depilatory rate index of home textile sanded fabrics comprises the following components in parts by weight: 2 parts of acrylic ultra-high molecular weight polymer emulsion adhesive; 1 part of hydrophilic fatty acid softener FX; 1 part of softener soft beads DT-7; 0.5 parts of citric acid is selected as the neutralizing acid, and the pH value of the prepared liquid is adjusted to 5.0.

[0042] A printing and dyeing process for reducing the hair removal rate index of home textile brushed fabric, the process uses the above-mentioned dyeing and finishing liquid for printing and dyeing, and specifically comprises the following steps:

[0043] (1) Preparation of dyeing and finishing liquid: Mix 2 parts of acrylic adhesive, 1 part of FX softener, 1 part of DT-7 and citric acid in proportion, and prepare the liquid with pH = 5.0;

[0044] (2) Liquid squeezing treatment: The dyeing and finishing liquid is evenly squeezed onto the front and back sides of the brushed fabric by a roller, with a roller pressure of 0.3 MPa and a squeezing rate of 70%;

[0045] (3) Drying and shaping: The squeezed fabric is sent to the open-width tenter frame and passes through each drying chamber in turn. It is dried and shaped according to the set temperature gradient. The total drying time is 4 minutes.

[0046] The process needs to be implemented on a flat-width stenter with at least 10 drying chambers to ensure that the pressure of the setting machine and the padder is stable at 0.3±0.1MPa; a carbon powder padder (EPDM rubber) is used to prevent ordinary rubber rollers from etching the rollers, thereby affecting the uniformity and efficiency of the padder.

[0047] The temperature distribution of each drying chamber is as follows:

[0048] Drying chamber 1: 155±2℃, drying chamber 2: 165±2℃, drying chamber 3: 165±2℃, drying chamber 4: 165±2℃, drying chamber 5: 165±2℃, drying chamber 6: 165±2℃, drying chamber 7: 165±2℃, drying chamber 8: 165±2℃, drying chamber 9: 165±2℃, drying chamber 10: 155±2℃.

[0049] In the process described in step (3), before the fabric enters the drying chamber from the open-width tentering frame, the fabric surface is humidified by a pre-steam moistening device to prevent excessive changes in the fabric surface humidity and reduce fiber strength loss; and at the same time, the fabric surface is dried by blowing air up and down.

[0050] In the process described in step (3), the fabric leaving the drying chamber is rapidly cooled and conditioned by cold air at 30±5°C and 10Hz, and then the fabric surface is humidified by a falling cloth wetting device to prevent the fabric from drying out and damaging the fiber strength.

[0051] Install static elimination roller on the cloth dropping device to prevent floating hair on the fabric.

[0052] The pure cotton brushed fabric finally obtained by the process described in this embodiment has a gram weight of 200g / m 2 .

[0053] Example 2

[0054] A dyeing and finishing liquid for reducing the depilatory rate index of home textile sanded fabrics comprises the following components in parts by weight: 4 parts of acrylic ultra-high molecular weight polymer emulsion adhesive; 2 parts of hydrophilic fatty acid softener FX; 2 parts of softener soft beads DT-7; acetic acid is selected as a neutralizing acid in an amount of 0.8 parts, and the pH value of the prepared liquid is adjusted to 6.5.

[0055] A printing and dyeing process for reducing the hair removal rate index of home textile brushed fabric, the process uses the above-mentioned dyeing and finishing liquid for printing and dyeing, and specifically comprises the following steps:

[0056] (1) Preparing a dyeing and finishing liquid: mixing an acrylic ultra-high molecular weight polymer emulsion adhesive, a hydrophilic fatty acid softener FX, and a softener soft bead DT-7 in a certain proportion, adding acetic acid to adjust the pH to 6.5, and preparing a dyeing and finishing liquid;

[0057] (2) Liquid rolling treatment: The dyeing and finishing liquid is evenly rolled onto the front and back sides of the brushed fabric through rollers;

[0058] (3) Drying and shaping: The fabric after liquid pressing is sent to the flat-width tentering machine, and passes through each drying chamber in turn, and is dried and shaped according to the set temperature gradient.

[0059] In the liquid squeezing treatment process described in step (2), the squeezing rate is 60% and the squeezing pressure is stabilized at 0.3±0.1 MPa.

[0060] The process needs to be implemented on a flat-width stenter with at least 10 drying chambers to ensure that the pressure of the setting machine and the padding machine is stable at 0.3±0.1MPa; a carbon powder padding machine (EPDM rubber) is used to prevent ordinary rubber rollers from etching the rollers, thereby affecting the uniformity and efficiency of the padding machine; the total drying time is 3 minutes.

[0061] The temperature distribution of each drying chamber is as follows:

[0062] Drying chamber 1: 155±2℃, drying chamber 2: 165±2℃, drying chamber 3: 165±2℃, drying chamber 4: 165±2℃, drying chamber 5: 165±2℃, drying chamber 6: 165±2℃, drying chamber 7: 165±2℃, drying chamber 8: 165±2℃, drying chamber 9: 165±2℃, drying chamber 10: 155±2℃.

[0063] The pH of the fabric surface needs to be controlled at 6.5.

[0064] In the process described in step (3), before the fabric enters the drying chamber from the open-width tentering frame, the fabric surface is humidified by a pre-steam moistening device to prevent excessive changes in the fabric surface humidity and reduce fiber strength loss; and at the same time, the fabric surface is dried by blowing air up and down.

[0065] In the process described in step (3), the fabric leaving the drying chamber is rapidly cooled and conditioned by cold air at 30±5°C and 10Hz, and then the fabric surface is humidified by a falling cloth wetting device to prevent the fabric from drying out and damaging the fiber strength.

[0066] Install static elimination roller on the cloth dropping device to prevent floating hair on the fabric.

[0067] Example 3

[0068] A dyeing and finishing liquid for reducing the depilatory rate index of home textile sanded fabrics comprises the following components in parts by weight: 3 parts of acrylic ultra-high molecular weight polymer emulsion adhesive; 1.5 parts of hydrophilic fatty acid softener FX; 1.5 parts of softener soft beads DT-7; tartaric acid is selected as a neutralizing acid in an amount of 0.6 parts, and the pH value of the prepared liquid is adjusted to 6.0.

[0069] A printing and dyeing process for reducing the hair removal rate index of home textile brushed fabric, the process uses the above-mentioned dyeing and finishing liquid for printing and dyeing, and specifically comprises the following steps:

[0070] (1) preparing a dyeing and finishing liquid: mixing an acrylic ultra-high molecular weight polymer emulsion adhesive, a hydrophilic fatty acid softener FX, and a softener soft bead DT-7 according to the proportions described in claim 1, adding tartaric acid to adjust the pH to 6.0, and preparing a dyeing and finishing liquid;

[0071] (2) Liquid rolling treatment: The dyeing and finishing liquid is evenly rolled onto the front and back sides of the brushed fabric through rollers;

[0072] (3) Drying and shaping: The fabric after liquid pressing is sent to the flat-width tentering machine, and passes through each drying chamber in turn, and is dried and shaped according to the set temperature gradient.

[0073] In the liquid squeezing treatment process described in step (2), the squeezing rate is 80% and the squeezing pressure is stabilized at 0.3±0.1 MPa.

[0074] The process needs to be implemented on a flat-width stenter with at least 10 drying chambers to ensure that the pressure of the setting machine and the padding machine is stable at 0.3±0.1MPa; a carbon powder padding machine (EPDM rubber) is used to prevent ordinary rubber rollers from etching the rollers, thereby affecting the uniformity and efficiency of the padding machine; the total drying time is 5 minutes.

[0075] The temperature distribution of each drying chamber is as follows:

[0076] Drying chamber 1: 155±2℃, drying chamber 2: 165±2℃, drying chamber 3: 165±2℃, drying chamber 4: 165±2℃, drying chamber 5: 165±2℃, drying chamber 6: 165±2℃, drying chamber 7: 165±2℃, drying chamber 8: 165±2℃, drying chamber 9: 165±2℃, drying chamber 10: 155±2℃.

[0077] The pH of the fabric surface needs to be controlled at 6.0.

[0078] In the process described in step (3), before the fabric enters the drying chamber from the open-width tentering frame, the fabric surface is humidified by a pre-steam moistening device to prevent excessive changes in the fabric surface humidity and reduce fiber strength loss; and at the same time, the fabric surface is dried by blowing air up and down.

[0079] In the process described in step (3), the fabric leaving the drying chamber is rapidly cooled and conditioned by cold air at 30±5°C and 10Hz, and then the fabric surface is humidified by a falling cloth wetting device to prevent the fabric from drying out and damaging the fiber strength.

[0080] Install static elimination roller on the cloth dropping device to prevent floating hair on the fabric.

[0081] The formula and process described in this embodiment finally obtain a polyester-cotton blended brushed fabric.

[0082] Experimental Example 1

[0083] In order to prove the beneficial effects of the dyeing and finishing liquid of the present invention compared with the prior art, the following experimental tests are carried out:

[0084] (1) Test object: Pure cotton brushed fabric (weight 200 g / m 2 ). A commercially available pure cotton brushed fabric was selected as a comparative example.

[0085] (2) Detection method:

[0086] Hair removal rate test: according to FZ / T 62020-2015 standard, use Martindale friction instrument to rub 1000 times and then weigh;

[0087] Hand feel evaluation: Passed a blind test by 5 professionals (1-5 points, 5 points is the best).

[0088] (3) Test results:

[0089] Table 1. Comparison of the experimental data of hair removal rate and hand feel of the pure cotton brushed fabric described in Example 1

[0090] project Hair removal rate before washing Hair removal rate after washing Feel score Example 1 0.2％ 0.6％ 4.8 Comparative Example 1.2％ 1.4％ 3.0

[0091] Analysis: The depilation rate of the pure cotton brushed fabric finally obtained by using the formula and process described in Example 1 is significantly lower than that of the comparative example, and the hand feel score is improved by 60%.

[0092] Experimental Example 2

[0093] In order to prove the beneficial effects of the printing and dyeing process of the present invention compared with the prior art, the following experimental tests are carried out:

[0094] (1) Test object: The polyester-cotton blended brushed fabric finally obtained by the formula and process described in Example 3.

[0095] (2) Detection method:

[0096] Color fastness test: according to GB / T 3920-2008 (dry / wet friction), GB / T 5711-2015 (washing);

[0097] Stability test: Produce 10 batches continuously to detect the fluctuation range of hair removal rate.

[0098] (3) Test results:

[0099] Table 2. Results of various fastness tests on polyester-cotton blended brushed fabrics described in Example 3

[0100] project Dry rubbing fastness Wet rubbing fastness Washing fastness Fluctuation of hair removal rate Example 3 Level 4-5 Level 4 Level 4 ±0.1％

[0101] Analysis: All fastnesses reach first-class standards, and the process stability is excellent.

[0102] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A dyeing and finishing liquid for reducing the depilation rate index of home textile sanded fabric, characterized in that: The invention comprises the following components in parts by weight: 2-4 parts of acrylic ultra-high molecular weight polymer emulsion adhesive; 1-2 parts of hydrophilic fatty acid softener FX; 1-2 parts of softener soft beads DT-7; and neutralizing acid.

2. The dyeing and finishing liquid for reducing the depilation rate index of home textile sanded fabric according to claim 1, characterized in that: The pH of the dyeing and finishing liquid is between 4.8 and 7.5, and the amount of the neutralizing acid used is determined according to the overall pH of the dyeing and finishing liquid.

3. A printing and dyeing process for reducing the dehairing rate index of home textile sanded fabric, characterized in that: The process uses the dyeing liquid described in any one of claims 1-2 for printing and dyeing, and specifically includes the following process steps: (1) preparing a dyeing and finishing liquid: mixing an acrylic ultra-high molecular weight polymer emulsion adhesive, a hydrophilic fatty acid softener FX, and a softener soft bead DT-7 according to the proportions described in claim 1, adding a neutralizing acid to adjust the pH to 4.8-7.5, and preparing a dyeing and finishing liquid; (2) Liquid rolling treatment: The dyeing and finishing liquid is evenly rolled onto the front and back sides of the brushed fabric through rollers; (3) Drying and shaping: The fabric after liquid pressing is sent to the flat-width tentering machine, and passes through each drying chamber in turn, and is dried and shaped according to the set temperature gradient.

4. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: In the liquid squeezing treatment process described in step (2), the squeezing rate is 60%-80%, and the squeezing pressure is stabilized at 0.3±0.1MPa.

5. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: The drying and shaping process described in step (3) is implemented on a flat-width stenter with at least 10 drying chambers, and the pressure of the stenter and the padder is stabilized at 0.3±0.1MPa; the total drying time is 3-5 minutes; and a carbon powder padder is used.

6. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 5, characterized in that: The temperature distribution of each drying chamber is as follows: Drying chamber 1: 155±2℃, drying chamber 2: 165±2℃, drying chamber 3: 165±2℃, drying chamber 4: 165±2℃, drying chamber 5: 165±2℃, drying chamber 6: 165±2℃, drying chamber 7: 165±2℃, drying chamber 8: 165±2℃, drying chamber 9: 165±2℃, drying chamber 10: 155±2℃.

7. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: The pH of the cloth surface needs to be controlled at 4.8-7.

5.

8. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: In the process described in step (3), before the fabric enters the drying chamber from the open-width tenter frame, the fabric surface is humidified by a pre-steam moistening device, and the fabric surface is dried by blowing air up and down at the same time.

9. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: In the process described in step (3), the fabric leaving the drying chamber is rapidly cooled and conditioned by cold air at 30±5°C and 10Hz, and then the fabric surface is humidified by a falling fabric wetting device.

10. The printing and dyeing process for reducing the hair removal rate index of home textile sanded fabric according to claim 3, characterized in that: Install static elimination roller on the cloth dropping device to prevent floating hair on the fabric.