Batch dyeing and finishing process for imitating red cloud gauze with natural fiber fabric

Abstract

The present application relates to the technical field of Hongyun yarn dyeing and finishing, in particular to a batch dyeing and finishing process for natural fiber fabrics imitating Hongyun yarn. A batch dyeing and finishing process for natural fiber fabrics imitating Hongyun yarn comprises the following steps: S1, pretreatment: the natural fiber woven grey cloth is subjected to desizing treatment and water discharge; S2, medium treatment, water discharge; S3, dyeing treatment with plant dyes, water discharge; S4, soap washing; S5, water washing and drying to obtain a semi-finished product; S6, the semi-finished product obtained in S5 is subjected to a plant dye scraping process; S7, sand washing treatment is carried out in an open-width sand washing machine; S8, drying treatment is carried out in an open-width airflow dryer to obtain a finished product imitating Hongyun yarn. The imitation Hongyun yarn obtained by batch dyeing and finishing of natural fiber fabrics in the present application has good antibacterial properties, UV resistance, skin-friendly properties, wrinkle resistance, environmental protection, and color fastness.

Description

Technical Field

[0001] The present application relates to the technical field of red cloud yarn dyeing and finishing, and in particular to a batch dyeing and finishing process for natural fiber fabrics imitating red cloud yarn. Background Art

[0002] Currently, Xiangyunsha's dyeing and finishing processes are relatively traditional, and large-scale mass production is not feasible. While industrialized technology can produce small batches of Xiangyunsha-like fabrics, the performance of these fabrics falls short of consumer demand. Consequently, there are few reports on mass-produced Xiangyunsha-like fabrics on the market, and Xiangyunsha fabrics are currently primarily dyed and finished using traditional methods.

[0003] However, the traditional dyeing and finishing methods for preparing Xiangyunsha fabrics have a long production cycle and low output, making Xiangyunsha fabrics expensive and unable to be popularized by the public, which restricts the development of the Xiangyunsha fabric industry. Therefore, this application provides a batch dyeing and finishing process for natural fiber fabrics imitating Hongyunsha. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a preparation method for the batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn. The imitation red cloud yarn obtained by batch dyeing and finishing of natural fiber fabric has good antibacterial, anti-ultraviolet, skin-friendly, anti-wrinkle, environmental protection and color fastness.

[0005] The present application provides a batch dyeing and finishing process for natural fiber fabrics imitating red cloud yarn, which is achieved through the following technical solutions:

[0006] A batch dyeing and finishing process for natural fiber fabric imitation red cloud yarn comprises the following steps:

[0007] S1, pretreatment: the natural fiber woven fabric is desized and drained;

[0008] S2, media treatment, effluent;

[0009] S3, dyeing with plant dyes, draining, neutralizing with clean water, and discharging;

[0010] S4, soaping;

[0011] S5, washing and drying to obtain the semi-finished product;

[0012] S6, performing a plant dye scraping process on the semi-finished product obtained in S5;

[0013] S7, open width sand washing machine performs sand washing;

[0014] S8, drying in an open-width airflow dryer to obtain the finished product.

[0015] By adopting the above technical solution, the grey fabric is first cleaned and lubricated through pretreatment, then treated with a medium and plant dye for base dyeing, and then dyed and finished through a fabric dye scraping process to give the fabric both positive and negative sides. Finally, it is sand washed in an open-width sand washer and treated in an open-width airflow dryer. The imitation red cloud yarn obtained by batch dyeing and finishing of the natural fiber fabric in this application has good antibacterial properties, UV resistance, skin-friendly properties, wrinkle resistance, environmental protection, and color fastness. In addition, the preparation method of this application is relatively simple. According to the process provided in this application, industrial batch production of natural fiber imitation red cloud yarn fabric can be achieved.

[0016] Preferably, the S1, pretreatment: desizing the natural fiber woven fabric, with 4-6 g / L soda ash and 2-3 g / L refining agent, at 80-85° C. for 55-65 min, followed by washing with clean water 2-3 times.

[0017] By adopting the above technical solution, limiting the temperature and time of pretreatment can better improve the color fastness and feel of the obtained product.

[0018] Preferably, in S2, the medium material used for the medium treatment is one of ferrous sulfate, potassium sulfite, and wood ash; the medium material concentration is 4-6 g / L, the medium treatment temperature is 50-60°C, the pH value is 3.5-5, and the medium treatment time is 40-45 min.

[0019] By adopting the above technical solution, the concentration, temperature, pH and treatment time of the medium treatment are limited, which can better improve the color fastness of the obtained product.

[0020] Preferably, the S3 is dyed with plant dyes, specifically as follows: the plant dye concentration is 5-6 g / L, the temperature is raised to 70-80°C at 0.8-1.2°C / min, kept warm for 60-65 minutes, drained, neutralized with clean water to keep the pH value at 6.5-7.5; and washed with clean water 2-3 times.

[0021] By adopting the above technical solution, the color fastness of the obtained product can be guaranteed.

[0022] Preferably, the soaping is specifically as follows: soaping agent 2-4 g / L, soaping temperature 70-75° C., soaping time 30-40 min.

[0023] Preferably, in S5, the pH value of the product is neutralized by water at 6.5-7.5; and the product is dried at a temperature of 120-125° C. and a speed of 9-12 m / min. After drying, the product has a moisture content of less than 5 wt %, thereby obtaining a semi-finished product.

[0024] By adopting the above technical solution, the quality stability of the obtained product can be guaranteed.

[0025] Preferably, the S6 plant dye scraping process is specifically as follows:

[0026] S6.1, knife coating: Prepare a slurry using 10-30% vegetable dye and 70-90% guar bean paste. Apply the slurry to one side of the semi-finished fabric obtained in S5 using a knife coating machine at a speed of 19-22 m / min, a temperature of 158-162°C, and a coating thickness of 0.20-0.30 mm.

[0027] S6.2, padding mordant working solution, the padding rate is 58-65%,

[0028] S6.3, one-step drying, drying temperature 120-125°C, speed 9-12 m / min, drying time 1-2 min;

[0029] S6.4, secondary drying: Use steaming equipment to dry and fix the fabric at a temperature of 100-105°C for 60-65 seconds;

[0030] S6.5, baking: baking in a baking oven at 160-165°C for 12-14 minutes;

[0031] S6.6, Washing: Wash with clean water at 35-45℃ for 14-16min, and finish.

[0032] By adopting the above technical solution, the fabric can be given a two-color surface, making the fabric smooth, crisp, durable, comfortable, antibacterial and other advantages, thereby increasing the added value of dyeing and finishing, thereby enhancing the competitiveness of the overall product and facilitating market promotion and sales.

[0033] Preferably, the open-width sand washing machine performs sand washing treatment as follows: 1.4-1.6 g / L of citric acid, so that the pH value is controlled at 4-4.5, 2-3 g / L of refining dispersant, 8-12 g / L of self-softening agent, 1.4-1.6 g / L of desizing enzyme, double water tank softening, water change ratio of 0.28-0.32, temperature controlled at 52-58°C, vehicle speed of 10-12 m / min, cloth storage capacity of 260-260 meters, wind speed of 65%, water speed of 50%, and processing time of 26-30 min.

[0034] By adopting the above technical solution, compared with the finished fabric obtained by sand washing with a drum sand washing machine, it has the following advantages: it is resistant to wrinkles, creases, and cracks and can improve the drape of the obtained fabric.

[0035] Preferably, the open-width airflow dryer performs drying treatment as follows: feeding the cloth at a speed of 10 m / min, storing 148-155 m of cloth, and drying at 120-150° C. for 8-12 min.

[0036] By adopting the above technical solution, compared with the finished fabric obtained by sand washing with a drum sand washing machine, it has the following advantages: it is resistant to wrinkles, creases, and cracks and can improve the drape of the obtained fabric.

[0037] Preferably, the natural fiber is at least one of viscose fiber, cotton, linen, silk and spun silk.

[0038] By adopting the above technical solution, the added value of dyeing and finishing of natural fiber core imitation Xiangyunsha can be increased, thereby improving the competitiveness of the overall product and facilitating market promotion and sales.

[0039] In summary, this application has the following advantages:

[0040] 1. The imitation red cloud yarn obtained by batch dyeing and finishing of natural fiber fabrics in this application has good antibacterial properties, UV resistance, skin-friendly properties, wrinkle resistance, environmental protection, and color fastness.

[0041] 2. The preparation method of the present application is relatively simple. According to the process parameters provided in the present application, industrial mass production of natural fiber fabrics imitating red cloud yarn fabrics can be achieved. DETAILED DESCRIPTION

[0042] The present application is further described in detail below with reference to comparative examples and embodiments.

[0043] Example

[0044] Example 1:

[0045] The natural fiber is at least one of viscose fiber, cotton, linen, silk and spun silk.

[0046] In the present embodiment, the natural fiber fabric used is jacquard fabric 120D*120D (purchased from Wujiang Jiajiafu Air-Jet Textile Co., Ltd.).

[0047] The present application discloses a batch dyeing and finishing process for natural fiber fabric imitating red cloud yarn, which is as follows:

[0048] S1, pretreatment: desizing the natural fiber fabric with 5 g / L soda ash and 2.5 g / L scouring agent LUN at 80°C for 60 min, washing with clean water three times, and draining;

[0049] S2, media treatment, the media material used is ferrous sulfate, the concentration is 5.0g / L, the media treatment temperature is 55℃, the media treatment time is 40min, and the water is discharged;

[0050] S3, dyeing with plant dyes, the plant dyes used are prepared from Dioscorea paniculate powder with a concentration of 5g / L, heating to 80°C at 1°C / min, keeping warm for 60min, then draining, neutralizing with clean water to control the pH at 7.0, washing with clean water three times, and draining;

[0051] S4, soaping, soaping agent concentration 3g / L, soaping temperature 60℃, soaping time 30min;

[0052] S5, after washing with clean water three times, place in a dryer at a drying temperature of 120°C and a speed of 10 m / s until the moisture content is less than 5% to obtain a semi-finished product;

[0053] S6, performing a plant dye scraping process on the semi-finished product obtained in S5, as follows:

[0054] S6.1, Doctor Coating: Apply the slurry to one side of the semi-finished fabric obtained in S5 using a doctor coater at a speed of 20 m / min, a temperature of 160°C, and a coating thickness of 0.20 mm. The slurry is prepared by combining 10% by weight of a vegetable dye and 90% by weight of a gelling agent. The gelling agent is a 6% guar paste prepared from guar gum with a viscosity of 5000 cps and a CAS number of 9000-30-0.

[0055] S6.2, padding mordant working solution, with a padding ratio of 60%; the mordant working solution used is prepared by dissolving 2g of mordant in 1L of water, and the mordant used is ferrous sulfate;

[0056] S6.3, primary drying: Place the impregnated fabric in a dryer at 120°C for 2 minutes.

[0057] S6.4, secondary drying: use a steamer to dry and fix the fabric at a temperature of 100°C for 60 seconds; S64, baking and finishing: bake in a baking machine at 160°C for 12 minutes;

[0058] S6.5, water washing: wash with clean water at 40℃ for 15min.

[0059] S7, open width sand washing machine performs sand washing treatment as follows: citric acid 1.5g / L, pH value controlled at 4.2, refining dispersant 2g / L, desizing enzyme 1.5g / L, adding self-softening agent 10g / L in double water tank, water change ratio 0.30, temperature controlled at 55℃, vehicle speed 10m / min, cloth storage capacity 260m, wind speed 65%, water speed 50%, and processing time 28min.

[0060] S8, drying process in open width airflow dryer: feeding cloth at a speed of 10 m / min, storing cloth of 150 m, drying at 120° C. for 10 min, and obtaining finished imitation red cloud yarn fabric.

[0061] Example 2:

[0062] The difference between Example 2 and Example 1 is that the medium substance used is potassium sulfite.

[0063] Example 3:

[0064] The difference between Example 3 and Example 1 is that the medium material used is wood ash.

[0065] Comparative Example

[0066] Comparative Example 1

[0067] The difference between Comparative Example 1 and Example 1 is that no S1 pretreatment was performed.

[0068] Comparative Example 2

[0069] The difference between Comparative Example 2 and Example 1 is that S7 uses a drum sand washer for sand washing.

[0070] The fabric prepared by the open-width sand washing machine in this application has the following advantages compared with the finished fabric obtained by sand washing with a drum sand washing machine: it is resistant to wrinkles, creases, and cracks and can improve the drape of the obtained fabric.

[0071] Comparative Example 3

[0072] The difference between Comparative Example 3 and Example 1 is that the conventional process is adopted for preparation.

[0073] Compared with traditional processes, this application can not only make the fabric have good antibacterial, UV resistance, skin-friendly, wrinkle-resistant, environmentally friendly and color fastness, but also the preparation process is time-saving and can be dyed and finished in batches, which can promote the development of Xiangyunsha fabrics.

[0074] Performance Testing

[0075] The performance test results of the fabrics obtained in Examples 1-3 and Comparative Examples 1-3 are shown in Tables 1-4.

[0076] Table 1 is the test parameter table of Example 1

[0077]

[0078]

[0079] Table 2 is the test parameter table of Example 2

[0080]

[0081]

[0082] Table 3 is a table of test parameters for Example 3

[0083]

[0084]

[0085] Table 4 is the test parameter table of comparative example 1

[0086]

[0087]

[0088] Table 5 is the test parameter table of comparative example 2

[0089] Table 6 is the test parameter table of comparative example 3 Combining Examples 1-3 with Comparative Example 1 and Tables 1-6, it can be seen that when the fabric is not pretreated, the color fastness and color vividness of the fabric are relatively poor, indicating that the pretreatment step of S1 can improve the color fastness and color vividness of the final imitation red cloud yarn fabric.

[0090] Combining Examples 1-3 with Comparative Example 2 and Tables 1-6, it can be seen that the coordination effect of the sand washing machine type and the overall process has an impact on the finishing of the fabric. Judging from the appearance of the fabric, the use of the flat-width sand washing machine in this application can make the fabric resistant to wrinkles, creases, and cracks and can improve the drape of the resulting fabric.

[0091] It can be seen from Examples 1-3 and Comparative Example 3 and Tables 1-6 that by adopting the preparation process of the present application, an imitation red cloud yarn fabric with good antibacterial, anti-ultraviolet, skin-friendly, anti-wrinkle, environmental protection and color fastness can be prepared, and according to the process parameters provided in this application, its industrial mass production can be achieved.

[0092] From Examples 1-3 and Tables 1-3, it can be seen that changing the specific medium used will have a certain impact on the color fastness of the final fabric. Using ferrous sulfate as the medium can maintain the best color fastness of the fabric.

[0093] In summary, the imitation red cloud yarn obtained by batch dyeing and finishing of natural fiber fabrics in this application has good antibacterial properties, UV resistance, skin-friendly properties, wrinkle resistance, environmental protection, and color fastness.

[0094] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A batch dyeing and finishing process for natural fiber fabrics imitating red cloud yarn, characterized by: The following steps are involved: S1, pretreatment: the natural fiber woven fabric is desized and drained; S2, media treatment, effluent; S3, dyeing with plant dyes, draining, neutralizing with clean water, and discharging; S4, soaping; S5, washing and drying to obtain the semi-finished product; S6, performing a plant dye scraping process on the semi-finished product obtained in S5, as follows: S6.1, knife coating: Prepare a slurry using 10-30% vegetable dye and 70-90% guar bean paste. Apply the slurry to one side of the semi-finished fabric obtained in S5 using a knife coating machine at a speed of 19-22 m / min, a temperature of 158-162°C, and a coating thickness of 0.20-0.30 mm. S6.2, padding mordant working solution, the padding rate is 58-65%, S6.3, primary drying: drying temperature 120-125°C, speed 9-12 m / min, drying time 1-2 min; S6.4, secondary drying: Use steaming equipment to dry and fix the fabric at a temperature of 100-105°C for 60-65 seconds; S6.5, baking: baking in a baking oven at 160-165°C for 12-14 minutes; S6.6, Washing: Wash with clean water at 35-45°C for 14-16 minutes, finishing; S7, open width sand washing machine performs sand washing; S8, drying in an open-width airflow dryer to obtain the finished product; Wherein, the natural fiber is at least one of viscose fiber, cotton, linen, silk and spun silk.

2. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: Said S1, pretreatment: desizing the natural fiber woven fabric, using 4-6 g / L soda ash and 2-3 g / L refining agent at 80-85° C. for 55-65 min, and then washing with clean water 2-3 times.

3. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: In S2, the medium material used in the medium treatment is one of ferrous sulfate, potassium sulfite, and wood ash; the medium material concentration is 4-6 g / L, the medium treatment temperature is 50-60° C., the pH value is 3.5-5, and the medium treatment time is 40-45 min.

4. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: The S3 is dyed with plant dyes, specifically as follows: the plant dye concentration is 5-6 g / L, the temperature is raised to 70-80° C. at 0.8-1.2° C. / min, kept warm for 60-65 minutes, drained, neutralized with clean water to maintain the pH value at 6.5-7.5; and washed with clean water 2-3 times.

5. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: The soaping is specifically as follows: soaping agent 2-4 g / L, soaping temperature 70-75° C., soaping time 30-40 min.

6. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: Said S5, washing and neutralizing with water to a pH value of 6.5-7.5; Drying: drying temperature is 120-125℃, speed is 9-12m / min, moisture content after drying is less than 5wt%, and semi-finished product is obtained.

7. The batch dyeing and finishing process of natural fiber fabric imitation red cloud yarn according to claim 1, characterized in that: The open-width airflow dryer performs drying treatment as follows: feeding the cloth at a speed of 10 m / min, storing 148-155 m of cloth, and drying at 120-150° C. for 8-12 minutes.

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