Post-treatment method for persimmon dyed fabric
By soaking persimmon-dyed fabrics in fiber modifier and agarwood microcapsule solution in a step-by-step process, the problems of rough and stiff hand feel and sour odor of persimmon-dyed fabrics were solved, resulting in soft and odorless persimmon-dyed fabrics and avoiding secondary quality problems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHUHAI JIAN XUAN CLOTHING LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-06-09
AI Technical Summary
Persimmon-dyed fabrics have problems with rough and stiff hand feel and sour odor during application. Existing processes have limited improvement effects and are prone to causing secondary quality problems.
The process involves a step-by-step approach: the fabric dyed with persimmon is first soaked in an aqueous solution of fiber modifier, then soaked in an aqueous solution of agarwood microcapsules, with the temperature controlled at 20℃~30℃, and finally dehydrated and dried.
It significantly improves the feel of fabrics, eliminates sour odors, avoids secondary quality problems, and maintains the stability of persimmon dye color.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of fabric dyeing technology, and more specifically, this invention relates to a post-treatment method for persimmon-dyed fabrics. Background Technology
[0002] Persimmon dyeing, an important branch of traditional Chinese plant dyeing techniques, has a history of over a thousand years, with records dating back to the Tang Dynasty in the "Yunxian Zaji". This technique uses unripe green persimmons as raw materials. After crushing, juicing, and sealing for fermentation, persimmon lacquer rich in tannins is produced. Through repeated soaking and sun-drying, the fabric exhibits a warm hue ranging from cinnamon pink to earth brown, hence the reputation of "sun dyeing".
[0003] Persimmon-dyed fabrics not only possess excellent waterproof, anti-corrosion, and insect-repellent properties, but their tannin content also endows them with good antibacterial functions. In recent years, with the rise of green consumption concepts and traditional intangible cultural heritage techniques, the application of persimmon dyeing in clothing, home furnishings, and cultural and creative industries has received increasing attention. my country's first group standard for "Persimmon Lacquer, a Plant Dye for Textiles" was officially released in 2025, laying the foundation for the standardized development of the persimmon dyeing industry.
[0004] However, the widespread application of persimmon-dyed fabrics faces two major technical challenges: First, the pectin in persimmon lacquer makes the fabric feel rough and stiff. While this property is beneficial for waterproofing and stain resistance, it limits its application in close-fitting garments where a soft texture is required. Second, the fermentation process of persimmon lacquer itself produces a sour and foul odor, which, although reduced by sun exposure, is still difficult to completely remove, affecting the wearing experience.
[0005] In existing processes, methods such as washing and adding softening oil are often used to improve the feel of fabrics, but these methods can easily cause secondary quality problems such as oil spots due to the reaction of the additives, and cannot improve the sour smell. Summary of the Invention
[0006] Therefore, the purpose of this invention is to provide a treatment method that makes persimmon-dyed fabrics softer to the touch, does not cause secondary quality problems, and has no sour or foul odor.
[0007] The specific technical solutions for achieving the above-mentioned objectives are as follows.
[0008] A first aspect of the present invention provides a post-treatment method for persimmon-dyed fabrics, comprising the following steps:
[0009] (1) Place the fabric dyed with persimmon in an aqueous solution of fiber modifier with a concentration of 0.4 g / L to 0.6 g / L, soak it at 20℃ to 30℃, and then take it out;
[0010] (2) The fabric treated in step (1) is placed in an aqueous solution of agarwood microcapsules with an agarwood concentration of 0.04 g / L to 0.06 g / L, soaked at 20°C to 30°C, and then taken out.
[0011] (3) Dehydrate and dry the fabric after step (2).
[0012] A second aspect of the present invention provides a persimmon-dyed fabric obtained by the above-described post-processing method.
[0013] The inventors of this invention discovered that by sequentially immersing fabrics dyed with persimmons in aqueous solutions of fiber modifiers and agarwood microcapsules of a certain concentration, and controlling the immersion temperature within a suitable range, this step-by-step, multi-bath process design not only effectively avoids potential secondary quality problems, but also significantly improves the fabric's hand feel and odor while protecting the stability of the persimmon dye color. This provides a feasible technical path for optimizing the quality of persimmon-dyed fabrics. Attached Figure Description
[0014] Figure 1 This is a comparison diagram of persimmon-dyed fabrics without post-treatment and those treated according to Example 1.
[0015] Figure 2 This is a comparison image of persimmon-dyed fabrics without post-treatment and those treated according to Example 2.
[0016] Figure 3 This is a comparison image of persimmon-dyed fabrics without post-treatment and those treated according to Example 3.
[0017] Figure 4 This is a comparison image of persimmon-dyed fabrics without post-treatment and those treated according to Example 4.
[0018] Figure 5 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 1.
[0019] Figure 6 This is a comparison diagram of persimmon-dyed fabrics post-treated in Example 3 and post-treated in Comparative Example 2.
[0020] Figure 7 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 3.
[0021] Figure 8 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 4.
[0022] Figure 9 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 5.
[0023] Figure 10 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 6.
[0024] Figure 11This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 7.
[0025] Figure 12 This is a comparison diagram of persimmon-dyed fabrics treated in Example 3 and those treated in Comparative Example 8. Detailed Implementation
[0026] To facilitate understanding of the present invention, a more complete description will be provided below. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.
[0027] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.
[0028] Unless otherwise specified, all examples were conducted under standard experimental conditions or as recommended in the manufacturer's instructions. All raw materials used were commercially available and readily available.
[0029] In some embodiments of the present invention, a post-treatment method for persimmon-dyed fabrics is disclosed, comprising the following steps:
[0030] (1) Place the fabric dyed with persimmon in an aqueous solution of fiber modifier with a concentration of 0.4 g / L to 0.6 g / L, soak it at 20℃ to 30℃, and then take it out;
[0031] (2) The fabric treated in step (1) is placed in an aqueous solution of agarwood microcapsules with an agarwood concentration of 0.04 g / L to 0.06 g / L, soaked at 20°C to 30°C, and then taken out.
[0032] (3) Dehydrate and dry the fabric after step (2).
[0033] In one embodiment, the fiber modifier in step (1) is fiber modifier JN33.
[0034] In one embodiment, the concentration of the fiber modifier in the aqueous solution of the fiber modifier in step (1) is 0.45 g / L to 0.55 g / L.
[0035] In one embodiment, the concentration of the fiber modifier in the aqueous solution of the fiber modifier in step (1) is 0.48 g / L to 0.52 g / L.
[0036] In one embodiment, the mass ratio of the persimmon-dyed fabric to the aqueous solution of the fiber modifier in step (1) is 1:45~55.
[0037] In one embodiment, the mass ratio of the persimmon-dyed fabric to the aqueous solution of the fiber modifier in step (1) is 1:48~52.
[0038] In one embodiment, the soaking temperature in step (1) is 24°C to 26°C, and the soaking time is 8 min to 12 min.
[0039] In one embodiment, the agarwood microcapsule aqueous solution in step (2) is prepared by adding agarwood microcapsules to water and stirring until homogeneous.
[0040] In one embodiment, the concentration of agarwood in the agarwood microcapsule aqueous solution in step (2) is 0.045 g / L to 0.055 g / L.
[0041] In one embodiment, the concentration of agarwood in the agarwood microcapsule aqueous solution in step (2) is 0.048 g / L to 0.052 g / L.
[0042] In one embodiment, the mass ratio of the fabric treated in step (1) to the agarwood microcapsule aqueous solution in step (2) is 1:45~55.
[0043] In one embodiment, the mass ratio of the fabric treated in step (1) to the agarwood microcapsule aqueous solution in step (2) is 1:48~52.
[0044] In one embodiment, the soaking temperature in step (2) is 24°C to 26°C, and the soaking time is 4 min to 6 min.
[0045] In one embodiment, the drying temperature in step (3) is 45°C to 55°C, and the drying time is 8 min to 12 min.
[0046] In one embodiment, the fabric in step (1) is one or more of hemp fiber fabric, cotton fiber fabric, silk fiber fabric, and wool fiber fabric.
[0047] In other embodiments of the present invention, persimmon-dyed fabrics treated by the above-described post-treatment method are disclosed.
[0048] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0049] Example 1: A post-treatment method for persimmon-dyed fabrics
[0050] Includes the following steps:
[0051] 1. At a mass ratio of 1:45, place a cotton fiber fabric with a length of 0.5 meters and a width of 1 meter that has undergone conventional persimmon dyeing (which has been dyed by persimmon and sun-dried to the specified color or has been mordanted to the specified color) into an aqueous solution of fiber modifier JN33 (purchased from Luxi County Jieneng New Material Co., Ltd.) with a concentration of 0.45 g / L, soak it at 25°C for 10 minutes, and then take it out.
[0052] 2. Take agarwood microcapsules (purchased from Changzhou Meisheng Biomaterials Co., Ltd.), add them to water, stir well, and obtain an aqueous solution of agarwood microcapsules with an agarwood concentration of 0.045 g / L;
[0053] 3. Place the cotton fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:45, soak at 25°C for 5 minutes, and then take it out.
[0054] 4. Dehydrate the cotton fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0055] A comparison image of cotton fiber fabric dyed with persimmon using conventional methods and cotton fiber fabric dyed with persimmon using the post-treatment method described in this embodiment is shown below. Figure 1 (Left: Before post-processing; Right: After post-processing) As shown. From Figure 1 It can be seen that the post-treatment of persimmon-dyed fabrics has almost no effect on the color of the fabric, and can maintain the original color of the fabric surface, with uniform color and no spots.
[0056] Example 2: A post-treatment method for persimmon-dyed fabrics
[0057] Includes the following steps:
[0058] 1. At a mass ratio of 1:55, place a 0.5-meter-long and 1-meter-wide linen fiber fabric that has been conventionally persimmon-dyed (which has been persimmon-dyed and sun-dried to the specified color or has been mordated to the specified color) into an aqueous solution of fiber modifier JN33 with a concentration of 0.4 g / L, soak it at 26°C for 13 minutes, and then take it out.
[0059] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0060] 3. Place the hemp fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:55, soak at 26°C for 8 minutes, and then take it out.
[0061] 4. Dehydrate the hemp fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0062] A comparison image of hemp fiber fabric dyed with persimmon using conventional methods and hemp fiber fabric dyed with persimmon using the post-treatment method described in this embodiment is shown below. Figure 2 (Left: Before post-processing; Right: After post-processing) As shown. From Figure 2 It can be seen that the post-treatment of persimmon-dyed fabrics has almost no effect on the color of the fabric, and can maintain the original color of the fabric surface, with uniform color and no spots.
[0063] Example 3: A post-treatment method for persimmon-dyed fabrics
[0064] Includes the following steps:
[0065] 1. At a mass ratio of 1:50, place a silk fiber fabric with a length of 0.5 meters and a width of 1 meter that has been conventionally persimmon dyed (which has been persimmon dyed and sun-dried to the specified color or has been mordated to the specified color) into an aqueous solution of fiber modifier JN33 with a concentration of 0.5 g / L, soak it at 25°C for 10 minutes, and then take it out.
[0066] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0067] 3. Place the silk fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0068] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0069] A comparison image of persimmon-dyed silk fiber fabric after conventional persimmon dyeing and persimmon-dyed silk fiber fabric after treatment using the post-treatment method of this embodiment is shown below. Figure 3 (Left: Before post-processing; Right: After post-processing) As shown. From Figure 3 It can be seen that the post-treatment of persimmon-dyed fabrics has almost no effect on the color of the fabric, and can maintain the original color of the fabric surface, with uniform color and no spots.
[0070] Example 4: A post-treatment method for persimmon-dyed fabrics
[0071] Includes the following steps:
[0072] 1. At a mass ratio of 1:50, place a wool fiber fabric with a length of 0.5 meters and a width of 1 meter that has been conventionally persimmon dyed (which has been persimmon dyed and sun-dried to the specified color or has been mordated to the specified color) into an aqueous solution of fiber modifier JN33 with a concentration of 0.6 g / L, soak it at 27°C for 15 minutes, and then take it out.
[0073] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.06 g / L;
[0074] 3. Place the wool fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 27°C for 8 minutes, and then take it out.
[0075] 4. Dehydrate the wool fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0076] A comparison image of wool fiber fabric dyed with persimmon using conventional methods and wool fiber fabric dyed with persimmon using the post-treatment method described in this embodiment is shown below. Figure 4 (Left: Before post-processing; Right: After post-processing) As shown. From Figure 4 It can be seen that the post-treatment of persimmon-dyed fabrics has almost no effect on the color of the fabric, and can maintain the original color of the fabric surface, with uniform color and no spots.
[0077] Comparative Example 1: A post-treatment method for persimmon-dyed fabrics
[0078] Includes the following steps:
[0079] 1. Add fiber modifier JN33 and agarwood microcapsules to water and stir evenly to obtain an aqueous solution with a fiber modifier JN33 concentration of 0.5 g / L and an agarwood concentration of 0.05 g / L;
[0080] 2. At a mass ratio of 1:50, place a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmons with a length of 0.5 meters and a width of 1 meter into the aqueous solution of step (1), soak it at 25°C for 15 minutes, and then take it out.
[0081] 3. Dehydrate the silk fiber fabric treated in step 2, and then dry it at 50°C for 10 minutes.
[0082] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 5 (Left: Example 3; Right: Comparative Example 1) As shown. From Figure 5 As can be seen, compared with the persimmon-dyed silk fiber fabric of Example 3, the color of the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is not significantly different, but obvious oily spots appear on the surface of the fabric.
[0083] Comparative Example 2: A post-treatment method for persimmon-dyed fabrics
[0084] Includes the following steps:
[0085] 1. At a mass ratio of 1:50, place a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmons with a length of 0.5 meters and a width of 1 meter into clean water, soak it at 25°C for 10 minutes, and then take it out.
[0086] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0087] 3. Place the silk fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0088] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0089] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 6 (Left: Example 3; Right: Comparative Example 2) As shown. From Figure 6 As can be seen, the two colors are not much different.
[0090] Comparative Example 3: A post-treatment method for persimmon-dyed fabrics
[0091] Includes the following steps:
[0092] 1. At a mass ratio of 1:50, a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmon was placed in an aqueous solution of soft oil KS (purchased from Luxi Jieneng New Material Co., Ltd.) with a concentration of 0.5 g / L and soaked at 25°C for 10 minutes before being taken out.
[0093] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0094] 3. Place the silk fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0095] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0096] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 7 (Left: Example 3; Right: Comparative Example 3) As shown. From Figure 7 As can be seen, the two colors are not much different, but obvious oily spots appear on the surface of the fabric.
[0097] Comparative Example 4: A post-treatment method for persimmon-dyed fabrics
[0098] Includes the following steps:
[0099] 1. At a mass ratio of 1:50, place a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmons with a length of 0.5 meters and a width of 1 meter into clean water with a concentration of 0.5 g / L, soak it at 25°C for 10 minutes, and then take it out.
[0100] 2. Add agarwood to water at a mass ratio of 1:50, boil at 100℃ until the mass ratio is 1:25, filter to obtain agarwood extract, and dilute to obtain agarwood solution with a concentration of 5g / L.
[0101] 3. Place the silk fiber fabric treated in step 1 into the agarwood solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0102] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0103] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 8 (Left: Example 3; Right: Comparative Example 4) As shown. From Figure 8 As can be seen, the two colors are not much different.
[0104] Comparative Example 5: A post-treatment method for persimmon-dyed fabrics
[0105] Includes the following steps:
[0106] 1. At a mass ratio of 1:50, a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmon was placed in a soft oil KS aqueous solution with a concentration of 0.5 g / L, soaked at 25°C for 10 min, and then taken out.
[0107] 2. Add agarwood to water at a mass ratio of 1:50, boil at 100℃ until the mass ratio is 1:25, filter to obtain agarwood extract, and dilute to obtain agarwood solution with a concentration of 5g / L.
[0108] 3. Place the silk fiber fabric treated in step 1 into the agarwood solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0109] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0110] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 9 (Left: Example 3; Right: Comparative Example 5) As shown. From Figure 9As can be seen, the two colors are not much different, but there are obvious oily spots on the surface of the fabric.
[0111] Comparative Example 6: A post-treatment method for persimmon-dyed fabrics
[0112] Includes the following steps:
[0113] 1. At a mass ratio of 1:50, place a conventionally dyed silk fiber fabric (same batch as in Example 3) with a length of 0.5 meters and a width of 1 meter into an aqueous solution of fiber modifier JN33 with a concentration of 0.5 g / L, soak it at 25°C for 10 minutes, and then take it out.
[0114] 2. Add agarwood to water at a mass ratio of 1:50, boil at 100℃ until the mass ratio is 1:25, filter to obtain agarwood extract, and dilute to obtain agarwood solution with a concentration of 5g / L.
[0115] 3. Place the silk fiber fabric treated in step 1 into the agarwood solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0116] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0117] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 10 (Left: Example 3; Right: Comparative Example 6) As shown. From Figure 10 As can be seen, the two colors are not much different.
[0118] Comparative Example 7: A post-treatment method for persimmon-dyed fabrics
[0119] Includes the following steps:
[0120] 1. At a mass ratio of 1:50, a silk fiber fabric (same batch as in Example 3) that has been conventionally dyed with persimmon was placed in an aqueous solution of fiber modifier JN33 with a concentration of 0.5 g / L, soaked at 50°C for 10 minutes, and then taken out.
[0121] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0122] 3. Place the silk fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 25°C for 5 minutes, and then take it out.
[0123] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0124] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 11 (Left: Example 3; Right: Comparative Example 7) As shown. From Figure 11 It can be seen that, compared with the persimmon-dyed silk fiber fabric of Example 3, the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is significantly lighter in color, and the color difference between the two is large.
[0125] Comparative Example 8: A post-treatment method for persimmon-dyed fabrics
[0126] Includes the following steps:
[0127] 1. At a mass ratio of 1:50, place a conventionally dyed silk fiber fabric (same batch as in Example 3) with a length of 0.5 meters and a width of 1 meter into an aqueous solution of fiber modifier JN33 with a concentration of 0.5 g / L, soak it at 25°C for 10 minutes, and then take it out.
[0128] 2. Add the agarwood microcapsules to water and stir well to obtain an agarwood microcapsule aqueous solution with an agarwood concentration of 0.05 g / L;
[0129] 3. Place the silk fiber fabric treated in step 1 into the agarwood microcapsule aqueous solution in step 2 at a mass ratio of 1:50, soak at 50°C for 5 minutes, and then take it out.
[0130] 4. Dehydrate the silk fiber fabric treated in step 3, and then dry it at 50℃ for 10 minutes.
[0131] A comparison diagram of the persimmon-dyed silk fiber fabric treated by the post-treatment method of Example 3 and the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is shown below. Figure 12 (Left: Example 3; Right: Comparative Example 8) As shown. From Figure 12 It can be seen that, compared with the persimmon-dyed silk fiber fabric of Example 3, the persimmon-dyed silk fiber fabric treated by the post-treatment method of this comparative example is significantly lighter in color, and the color difference between the two is large.
[0132] Experimental Example 1: Comparison of the hand feel and odor effects of persimmon-dyed fabrics
[0133] The degree of improvement in hand feel and odor of the fabrics in Examples 1-4 and Comparative Examples 1-8 was tested (according to GB18401-2010 "National Basic Safety Technical Specifications for Textile Products"). The degree of improvement in hand feel was evaluated by professional evaluators (out of 10 points). The data for Examples 1-4 were calculated relative to the untreated persimmon-dyed fabric (set as 0 points), and the data for Comparative Examples 1-8 were calculated relative to the persimmon-dyed fabric of Example 3.
[0134] The results are shown in Table 1.
[0135] Table 1
[0136]
[0137] As shown in Table 1, compared with the untreated persimmon-dyed fabric (which was stiff, itchy, and had a sour, fermented smell), the persimmon-dyed fabric treated by the post-treatment methods of Examples 1-4 of this invention retained the stiff characteristics of persimmon dyeing while eliminating the stiffness and itchiness, resulting in a significantly better hand feel, greater skin-friendliness, and the original sour, fermented smell disappeared, replaced by a faint agarwood fragrance. Among the four fabrics, the hemp fiber fabric showed the best improvement in hand feel.
[0138] Compared to the persimmon-dyed fabric of Example 3, the persimmon-dyed fabric treated by the post-treatment method of Comparative Example 1 felt slightly stiffer. This is likely due to the reaction between fiber modifier JN33 and agarwood microcapsules, resulting in loss. The persimmon-dyed fabrics treated by the post-treatment methods of Comparative Examples 2 and 4 still had an itchy feeling, indicating that washing could not quickly and completely remove the pectin in the persimmon lacquer, nor would it generate substances that could improve the astringency. The persimmon-dyed fabrics treated by the post-treatment methods of Comparative Examples 3 and 5 felt sticky and lacked the stiff feel characteristic of persimmon dyeing. This may be because the soft oil formed a flexible film between the fibers, increasing the bulkiness, reducing the astringency, and giving the fabric an "oily" feel. The persimmon-dyed fabric treated by the post-treatment method of Comparative Example 6 had a similar feel to the persimmon-dyed fabric of Example 3. The persimmon-dyed fabrics treated by the post-treatment methods of Comparative Examples 7 and 8 felt softer and lacked the stiff feel characteristic of persimmon dyeing. We speculate that this may be because heating can quickly decompose the pectin in the persimmon lacquer, thereby washing away the color and pectin from the fabric and making it soft.
[0139] Compared with the persimmon-dyed fabric of Example 3, the persimmon-dyed fabric treated by the post-treatment methods of Comparative Examples 4 to 6 still had a sour and fermented smell, while the persimmon-dyed fabric treated by the post-treatment methods of other comparative examples had no obvious odor.
[0140] Experimental Example 2: Comparison of Dyeing Properties of Persimmon-Dyed Fabrics
[0141] The color fastness to washing of the fabrics in Examples 1-4 and Comparative Examples 1-8 was tested according to Q / JX 3-2016 "Plant-dyed Woven Garments". The color fastness to light of the fabrics in Examples 1-4 and Comparative Examples 1-8 was tested according to Q / JX 3-2016 "Plant-dyed Woven Garments". The results are shown in Table 2.
[0142] Table 2
[0143]
[0144] As shown in Table 2, the fastness indicators of the fabrics obtained in Examples 1-4 and Comparative Examples 1-8 all meet the testing standards. This result indicates that different post-treatment processes for persimmon-dyed fabrics do not significantly affect their dyeing performance.
[0145] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0146] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A post-treatment method for persimmon-dyed fabrics, characterized in that, Includes the following steps: (1) Place the fabric dyed with persimmon in an aqueous solution of fiber modifier with a concentration of 0.4 g / L to 0.6 g / L, soak it at 20℃ to 30℃, and then take it out; (2) The fabric treated in step (1) is placed in an aqueous solution of agarwood microcapsules with an agarwood concentration of 0.04 g / L to 0.06 g / L, soaked at 20°C to 30°C, and then taken out. (3) Dehydrate and dry the fabric after step (2).
2. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The fiber modifier mentioned in step (1) is fiber modifier JN33.
3. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The concentration of the fiber modifier in the aqueous solution of the fiber modifier in step (1) is 0.45 g / L to 0.55 g / L, preferably 0.48 g / L to 0.52 g / L.
4. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The agarwood microcapsule aqueous solution mentioned in step (2) is prepared by adding agarwood microcapsules to water and stirring evenly.
5. The post-treatment method for persimmon-dyed fabrics according to claim 4, characterized in that, The concentration of agarwood in the agarwood microcapsule aqueous solution in step (2) is 0.045 g / L to 0.055 g / L, preferably 0.048 g / L to 0.052 g / L.
6. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The mass ratio of the fabric dyed with persimmon to the aqueous solution of the fiber modifier in step (1) is 1:45~55, preferably 1:48~52; And / or, the mass ratio of the fabric treated in step (1) to the agarwood microcapsule aqueous solution in step (2) is 1:45~55, preferably 1:48~52.
7. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The soaking temperature in step (1) is 24℃~26℃, and the soaking time is 8 min~12 min; And / or, the soaking temperature in step (2) is 24℃~26℃, and the soaking time is 4 min~6 min.
8. The post-treatment method for persimmon-dyed fabrics according to claim 1, characterized in that, The drying temperature in step (3) is 45℃~55℃, and the drying time is 8 min~12 min.
9. The post-treatment method for persimmon-dyed fabrics according to any one of claims 1 to 8, characterized in that, The fabric mentioned in step (1) is one or more of the following: hemp fiber fabric, cotton fiber fabric, silk fiber fabric, and wool fiber fabric.
10. Persimmon-dyed fabric obtained by the post-processing method according to any one of claims 1 to 9.