Leather tie-dyeing method

Abstract

The invention belongs to the technical field of leather dyeing, and discloses a leather tie-dyeing method which comprises the following steps: S1, selecting vegetable leather, and pretreating the vegetable leather; s2, required dye and tools are prepared; s3, finely tying the vegetable tanned leather; s4, the tied leather is put into a cauldron containing dye, the cauldron is heated to the high temperature to be boiled, the dye gradually permeates into leather fibers along with temperature rise, meanwhile, the leather can deform to a certain degree in the hot boiling process, the boiling time duration is determined according to the desired effect, and the ideal dyeing and deformation effect is achieved; and S5, taking out the leather, cleaning, and naturally airing. According to the scheme, pigment penetrates into the leather through a unique hot boiling dyeing technology, and personalized pattern and color combinations are created on the leather; the dyeing degree and the deformation quantity of the leather are controlled by controlling the hot boiling time, and finally, the uniformity of color permeation is effectively improved, so that the color of a leather product is fuller and is uniformly distributed.

Description

Technical Field

[0001] The invention belongs to the technical field of leather dyeing, and particularly relates to a leather tie-dyeing method. Background Art

[0002] As a very old physical dyeing technology, tie-dyeing can be traced back to the Yellow River Basin and has a history of 1,500 years. This dyeing process was mature in the Eastern Jin Dynasty and reached its peak in the Tang Dynasty. It was widely loved by the nobles in my country. However, due to its complex process and laborious manual operation, this technology gradually declined during its development. However, with the development of the economy and the progress of society, people's interest and respect for traditional culture have gradually increased, which has led to the revival of tie-dyeing, a traditional handicraft. At the same time, with the rise of tourism, the combination of tie-dyeing skills and local culture has brought new development opportunities to this skill. Especially in the Bai area of ​​Dali, the combination of tie-dyeing skills and tourism has made tie-dye products a hot commodity in the market. In addition, with the advancement of science and technology and people's pursuit of individuality and uniqueness, tie-dyeing technology has also received more attention and application. Modern tie-dyeing technology not only inherits traditional dyeing techniques, but also incorporates new design concepts and dyeing techniques, making leather tie-dyeing products more colorful and artistic.

[0003] Due to its fiber structure and thickness, color penetration and uniformity during dyeing become a challenge. Conventional tie-dyeing methods make it difficult to dye leather materials with rich and diverse patterns and color effects. Summary of the invention

[0004] In order to overcome the above technical problems, the present invention provides a leather tie-dyeing method.

[0005] The present invention adopts the following technical solutions:

[0006] A leather tie-dyeing method comprises the following steps:

[0007] S1. Select vegetable tanned leather as dyeing raw material, pre-treat the vegetable tanned leather, including cleaning and degreasing, to ensure that the leather surface is clean and free of impurities;

[0008] S2. Prepare the required dyes, ropes, tying tools, cauldrons, and thermometers according to the design requirements;

[0009] S3. Use ropes and tying tools to tie the vegetable tanned leather in detail according to the design pattern;

[0010] S4. Put the tied leather into a large pot filled with dye and heat it to a high temperature for boiling. As the temperature rises, the dye gradually penetrates into the leather fibers. At the same time, the leather will deform to a certain extent during the hot boiling process. The boiling time is determined according to the desired effect to achieve the ideal dyeing and deformation effect;

[0011] S5. Take out the dyed leather, wash it with clean water, remove excess dye and auxiliaries, and place the leather in a ventilated and dry place to dry naturally.

[0012] Preferably, in S4, different additives or auxiliaries are added to the dye to adjust the color and effect of dyeing, and the dyeing condition of the leather is observed, and supplementary dyeing or dyeing time is performed if necessary.

[0013] Preferably, after the heat cooking in S4 is completed, the dye is kept warm at 50° C. to fix and penetrate the leather.

[0014] Preferably, the leather after drying is treated with a setting agent and a glossing agent to set and gloss the leather, and then coated and polished.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Personalization and diversification needs: Traditional leather dyeing methods often fail to produce rich and diverse patterns and color effects. However, the tie-dyeing process of this solution uses a unique hot-boiling dyeing technology to allow the pigment to penetrate deep into the leather, creating personalized patterns and color combinations on the leather, thus meeting the market's demand for diversified and personalized products.

[0017] Color penetration and uniformity: Due to its fiber structure and thickness, color penetration and uniformity of leather become a challenge during dyeing. This technical solution controls the dyeing degree and deformation of the leather by controlling the hot boiling time. The fine tying and dyeing control can effectively improve the uniformity of color penetration, making the color of leather products fuller and more evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention relates to leather dyed by the dyeing method. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] A leather tie-dyeing method, comprising the following steps:

[0021] 1. Preliminary preparation

[0022] Leather Selection and Treatment:

[0023] Choose vegetable tanned leather as the dyeing material and check the leather quality to ensure it is free of damage and impurities.

[0024] Clean the leather surface with detergent and a soft cloth to remove grease and stains.

[0025] Let the treated leather dry and set aside.

[0026] Dye and tool preparation:

[0027] According to design requirements, prepare the required dyes and dyeing auxiliaries.

[0028] Prepare necessary tools such as a large pot, thermometer, rope, tying tool, gloves, etc.

[0029] 2. Tie and boil

[0030] Design and Tie:

[0031] Mark the areas on the leather where you want to tie the knot, according to the design.

[0032] Use rope and tying tools to tie the knot carefully according to the design requirements, ensuring that the knot is firm and the shape is in accordance with the design.

[0033] Hot cooking (about 60-90 minutes):

[0034] Place the tied leather in a large pot and add enough dye to ensure the leather is completely soaked.

[0035] Heat the dye until boiling.

[0036] Control the length of cooking time according to the dyeing depth and deformation effect required by the design. Generally, the longer the cooking time, the darker the dyeing and the greater the deformation. It is recommended to start with a shorter cooking time when trying for the first time and gradually adjust to the ideal effect.

[0037] During the hot cooking process, pay attention to regularly observe the dyeing of the leather and adjust the dye concentration or temperature as needed.

[0038] 3. Dyeing treatment

[0039] Fixation and permeabilization (about 30 minutes):

[0040] After the hot cooking is completed, the dye is kept warm at 50℃ and the leather is allowed to continue to soak in the dye for a period of time to allow the dye to be better fixed and penetrated.

[0041] Dyeing auxiliaries can be added as needed to improve the uniformity and durability of dyeing.

[0042] Dyeing effect adjustment:

[0043] Take out the leather and observe its dyeing effect. If necessary, put it into the dye again for additional dyeing.

[0044] According to the design requirements, the color or concentration of the dye can be adjusted to achieve the ideal dyeing effect.

[0045] 4. Post-processing and finishing

[0046] Cleaning and drying:

[0047] Take out the dyed leather and wash it thoroughly with clean water to remove excess dye and auxiliaries.

[0048] Use a soft cloth or towel to gently wipe the leather surface to remove excess water.

[0049] Place the leather in a ventilated and dry place, avoid direct sunlight, and let it dry naturally.

[0050] Fixing and glossing treatment:

[0051] If necessary, the leather can be treated with a setting agent to keep it in the desired shape.

[0052] Use gloss to coat and polish the leather to increase its gloss and beauty.

[0053] It should be noted that the above time is for reference only and may vary in actual operation due to factors such as leather type, dye type, design requirements, etc. It is recommended to flexibly adjust according to actual conditions during operation to achieve the best dyeing effect.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A leather tie-dyeing method, characterized in that: The following steps are involved: S1. Select vegetable tanned leather as dyeing raw material, pre-treat the vegetable tanned leather, including cleaning and degreasing, to ensure that the leather surface is clean and free of impurities; S2. Prepare the required dyes, rope tying tools, a large pot, and a thermometer according to the design requirements; S3. Use ropes and tying tools to tie the vegetable tanned leather in detail according to the design pattern; S4. Put the tied leather into a large pot filled with dye and heat it to a high temperature for boiling. As the temperature rises, the dye gradually penetrates into the leather fibers. At the same time, the leather will deform to a certain extent during the hot boiling process. The boiling time is determined according to the desired effect to achieve the ideal dyeing and deformation effect; S5. Take out the dyed leather, wash it with clean water, remove excess dye and auxiliaries, and place the leather in a ventilated and dry place to dry naturally.

2. A leather tie-dyeing method according to claim 1, characterized in that: In S4, different additives or auxiliaries are added to the dye to adjust the color and effect of dyeing, and the dyeing condition of the leather is observed. If necessary, additional dyeing is performed or the dyeing time is adjusted.

3. A leather tie-dyeing method according to claim 1, characterized in that: After the heat cooking in S4 is completed, the dye is kept at 50°C to fix and penetrate the leather.

4. A leather tie-dyeing method according to claim 1, characterized in that: Apply and polish to the leather after it has dried to give it a set and gloss finish.

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