Leather product renovation method based on leather surface color changing technology

Abstract

The invention discloses a leather product renovation method based on a leather surface color changing technology. The leather product renovation method comprises the following steps that firstly, an original protection layer is removed; step 2, patching and polishing; step 3, toning; step 4, trial color spraying; 5, color spraying; step 6, post-processing; 7, drying and color fixing; step 8, optimizing color and luster; step 9, checking and delivering; according to the invention, the color paste is blended and used, so that the requirement of color change can be met while a leather article is repaired; the color paste after color adjustment is put into a spray gun, the air pressure, the spraying angle and the product distance of the spray gun for first-time spraying are controlled, the cross spraying technology is adopted, formal spraying is carried out, the overall effect after pigment spraying can be ensured, and product color adjustment failure is avoided; after color spraying is completed, oil absorption paper is immediately used for absorbing redundant color paste and oil, and after drying treatment, a glazing agent is evenly smeared, so that the repaired leather product can be smoother and brighter and has good color and luster performance.

Description

Technical Field

[0001] The invention relates to the technical field of leather renovation, in particular to a leather renovation method based on genuine leather surface color changing technology. Background Art

[0002] With the improvement of people's living standards and the change of consumption concepts, leather products have become an indispensable accessory in daily life. However, long-term use and wear will cause the leather surface to age and fade, affecting the appearance. However, traditional leather repair methods are often limited to repairing damage, and it is difficult to meet the demand for color change; secondly, in the traditional color adjustment process, improper use of the spray gun will affect the overall effect after the color spraying, and may cause the product color adjustment to fail; and the effect of the leather after repair is required to be high, and good color performance is required; therefore, it is necessary to design a leather renovation method based on the leather surface color change technology. Summary of the invention

[0003] The purpose of the present invention is to provide a leather goods refurbishment method based on genuine leather surface color changing technology to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a leather goods renovation method based on leather surface color changing technology, comprising the following steps: step one, removing the original protective layer; step two, repairing and polishing; step three, color matching; step four, test spraying; step five, spraying; step six, post-processing; step seven, drying and fixing; step eight, optimizing color; step nine, inspecting and delivering;

[0005] In the above step 1, the old protective layer of the leather goods to be refurbished is removed;

[0006] In the above step 2, the damaged points on the leather goods are repaired;

[0007] In the above step 3, the original leather surface color or the color required by the customer is prepared;

[0008] In step 4 above, try spraying the color and check the effect;

[0009] In the above step 5, the color is sprayed formally;

[0010] In the above step 6, the leather goods after spraying are post-processed with color paste;

[0011] In the above step 7, the leather product after the treatment is dried;

[0012] In the above step eight, the color of the leather goods is optimized;

[0013] In the above step nine, the leather refurbishment effect is checked and delivered to the customer.

[0014] As a further technical solution of the present invention, in the step one, the leather product to be repaired is confirmed to ensure that the leather material is first-layer leather or second-layer leather, and avoid using artificial leather or other synthetic materials; a mild remover and 70% concentration of medical alcohol are diluted according to the instructions, and a clean cotton swab is dipped in the mixed solution and gently wipe the leather surface. During the wiping process, the wiping force is controlled and the force is applied evenly. After wiping, check whether the leather surface is clean and flat, and whether it is completely removed.

[0015] As a further technical solution of the present invention, in the step 2, observe the degree of damage to the leather surface after removing the original protective layer, use a wound-repairing cream of similar color, and use a small scraper or fingertips to evenly apply the wound-repairing cream to the damaged area under the conditions of an ambient temperature of 20 to 25°C and an ambient humidity of 40% to 70%. After application, wait for 30 minutes to observe the drying condition, and polish it after it is completely dry.

[0016] As a further technical solution of the present invention, in the step three, according to the original leather color of the item or the color required by the customer, use a transparent test cup and a clean stirring rod to add the water-based HP color paste therein, ensure that the texture of the color paste is fine before adding, and then mix the proportions according to the color paste instructions, stirring continuously during the process to mix them evenly until the color is consistent with the original color of the leather surface of the item.

[0017] As a further technical solution of the present invention, in the step four, the color paste with adjusted color is placed in the spray gun, and the air pressure of the spray gun is controlled between 0.4Mpa and 0.6Mpa for the first spraying, the spraying angle is controlled to 90°, and the distance from the product is 15cm to 20cm. A small area of ​​trial spraying is carried out in an inconspicuous area to observe the fluidity, covering power and color after drying of the color paste to check whether the color is uniform and whether it meets the expected effect. The spray gun pressure and color paste concentration are adjusted according to the results to ensure that the color is uniform and there is no color difference.

[0018] As a further technical solution of the present invention, in step five, the object is placed in front of the water curtain machine, maintaining a distance of 30 cm to 50 cm, and a spray gun is used for formal spraying. The cross-spraying technology is used during the spraying process, and the overlapping range is controlled between 1 / 3 and 1 / 2 to ensure uniform color coverage.

[0019] As a further technical solution of the present invention, in step six, immediately after the color spraying is completed, use oil-absorbing paper to gently press the leather surface to absorb excess color paste and oil, making the leather surface smoother and brighter; pay attention to the number of times the oil-absorbing paper is used during the process, and the number of times the oil-absorbing paper is used in the same area shall not exceed 3 times to avoid too much color being absorbed and affecting the final result.

[0020] As a further technical solution of the present invention, in the step seven, the painted leather is placed in a cool and ventilated place to avoid high temperature and direct sunlight. Curtains or sun visors can be used to block strong sunlight, while maintaining a certain light for observation. The ambient temperature during the drying process is preferably 15 to 25°C, and must not exceed 30°C. The ambient humidity is 40% to 60%, and must not exceed 70%. A fan is used to blow air at a medium wind speed at a distance of 1m from the leather to maintain air circulation and accelerate the drying process, but the fan should not be aimed directly at the leather surface of the item.

[0021] As a further technical solution of the present invention, in step eight, select an emulsion or liquid polish suitable for dermis, avoid using waxy polish to avoid clogging pores, use a soft cloth or sponge to evenly apply the polish, pay attention to the edges and details, and repeat 2 to 3 times.

[0022] As a further technical solution of the present invention, in step nine, the overall effect of the leather goods is observed and checked under natural light, and attention is paid to the uniformity of color and glossiness. If there are defects, local corrections are made using a fine brush and color paste, and the drying and glazing steps are repeated when necessary. Detailed maintenance instructions are provided to customers, including how to clean, store and regularly maintain the leather goods, and customers are recommended to use special leather cleaners and maintenance oils, and avoid using corrosive cleaning products.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the leather renovation method based on the genuine leather surface color changing technology observes the degree of leather surface damage after removing the original protective layer, uses a repairing cream of similar color, and uses a fine scraper or fingertips to evenly apply the repairing cream to the damaged area under the conditions of an ambient temperature of 20 to 25°C and an ambient humidity of 40% to 70%. After the application is completed, wait for 30 minutes to observe the drying condition, and polish it flat after it is completely dry. According to the original leather surface color of the item or the color required by the customer, use a transparent test cup and a clean stirring rod to Add water-based HP color paste, make sure the texture of the color paste is fine before adding, then mix the proportion according to the color paste instructions, stir constantly during the process to make it evenly mixed until the color is consistent with the original color of the leather surface of the item, which can repair the leather items and meet the needs of color change; put the adjusted color paste into the spray gun, control the air pressure of the spray gun between 0.4Mpa and 0.6Mpa for the first spraying, control the spraying angle to 90°, keep the distance from the product at 15cm to 20cm, test spray a small area in an inconspicuous area, and observe the color The fluidity, covering power and color after drying of the paste are checked to check whether the color is uniform and meets the expected effect. According to the results, the spray gun pressure and color paste concentration are adjusted to ensure uniform color and no color difference. The object is placed in front of the water curtain machine at a distance of 30cm to 50cm. The spray gun is used for formal color spraying. The cross-spraying technology is used during the color spraying process. The overlapping range is controlled between 1 / 3 and 1 / 2 to ensure uniform color coverage. During the color adjustment process, the use of the spray gun can ensure the overall effect of the color material after spraying and avoid the failure of product color adjustment; spray Immediately after the coloring is completed, use oil-absorbing paper to gently press the leather surface to absorb excess color paste and oil to make the leather surface smoother and brighter. Pay attention to the number of times the oil-absorbing paper is used during the process. The number of times the oil-absorbing paper is used in the same area should not exceed 3 times to avoid excessive absorption of color and affect the final result. After drying, choose an emulsion or liquid polish suitable for genuine leather. Avoid using waxy polish to avoid clogging the pores. Use a soft cloth or sponge to evenly apply the polish, paying attention to the edges and details. Repeat 2 to 3 times to make the repaired leather smoother and brighter, with good color performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flow chart of the method of the present invention;

[0025] Figure 2 This is a schematic diagram of the leather goods before refurbishment in the present invention;

[0026] Figure 3 This is a schematic diagram of the leather goods after refurbishment in the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Please see attached Figure 1 -Attached Figure 3 , an embodiment provided by the present invention: a leather goods renovation method based on leather surface color changing technology, comprising the following steps: step one, removing the original protective layer; step two, repairing and polishing; step three, color matching; step four, test spraying; step five, spraying; step six, post-processing; step seven, drying and fixing; step eight, optimizing color; step nine, inspecting and delivering;

[0029] In the above step 1, remove the old protective layer of the leather goods to be refurbished, confirm the genuine leather products to be repaired, ensure that the genuine leather material is first-layer leather or second-layer leather, and avoid using artificial leather or other synthetic materials; use a mild film remover and 70% concentration of medical alcohol to dilute according to the instructions, use a clean cotton swab to dip the mixed solution, and gently wipe the leather surface. Control the wiping force during the wiping process and apply force evenly. After wiping, check whether the leather surface is clean and flat, and whether it is completely removed;

[0030] In the above step 2, repair the damaged points on the leather goods, observe the degree of damage to the leather surface after removing the original protective layer, use a repairing cream of similar color, and apply the repairing cream evenly to the damaged area with a small scraper or fingertips under the conditions of an ambient temperature of 20 to 25°C and an ambient humidity of 40% to 70%. After the application is completed, wait for 30 minutes to observe the drying condition, and polish it flat after it is completely dry;

[0031] In the above step 3, the original leather surface color or the color required by the customer is prepared. According to the original leather surface color of the item or the color required by the customer, a transparent test cup and a clean stirring rod are used to add the water-based HP color paste therein. Before adding, the texture of the color paste is ensured to be fine. Then, the proportion is prepared according to the color paste instructions. Stir continuously during the process to make it evenly mixed until the color is consistent with the original color of the leather surface of the item;

[0032] In the above step 4, try spraying and check the effect. Put the adjusted color paste into the spray gun. For the first spraying, control the air pressure of the spray gun between 0.4Mpa and 0.6Mpa, control the spraying angle to 90°, and keep the distance from the product at 15cm to 20cm. Test spraying a small area on an inconspicuous part, observe the fluidity, covering power and color after drying of the color paste to check whether the color is uniform and meets the expected effect. Adjust the spray gun pressure and color paste concentration according to the results to ensure uniform color and no color difference.

[0033] In the above step 5, the formal color spraying is carried out by placing the object in front of the water curtain machine, keeping a distance of 30cm to 50cm, and using a spray gun to spray the color. The cross-spraying technology is used during the spraying process, and the overlapping range is controlled between 1 / 3 and 1 / 2 to ensure uniform color coverage;

[0034] In the above step 6, the leather goods after spraying are post-processed with color paste. Immediately after spraying, use oil-absorbing paper to gently press the leather surface to absorb excess color paste and oil, making the leather surface smoother and brighter. Pay attention to the number of times the oil-absorbing paper is used during the process. The number of times the oil-absorbing paper is used in the same area should not exceed 3 times to avoid excessive color absorption, which will affect the final result.

[0035] In the above step 7, the leather goods that have been treated are dried. The painted leather goods are placed in a cool and ventilated place to avoid high temperature and direct sunlight. Curtains or sunshades can be used to block strong sunlight. At the same time, a certain amount of light is maintained for observation. The ambient temperature during the drying process is preferably 15 to 25°C, and should not exceed 30°C. The ambient humidity is 40% to 60%, and should not exceed 70%. A fan is used at a medium wind speed at a distance of 1m from the leather goods to keep the air flowing and accelerate the drying process. However, the fan should not be directly aimed at the leather surface of the item.

[0036] In step eight above, optimize the color of the leather goods, choose an emulsion or liquid polish suitable for genuine leather, avoid using waxy polishes to avoid clogging pores, use a soft cloth or sponge to evenly apply the polish, pay attention to the edges and details, and repeat 2 to 3 times;

[0037] In step nine above, check the refurbishment effect of the leather goods, deliver them to the customer, observe the overall effect of the leather goods under natural light, pay attention to the color uniformity and glossiness, if there are defects, use a small brush and color paste to make local corrections, repeat the drying and glazing steps if necessary, provide detailed maintenance instructions to customers, including how to clean, store and regularly maintain the leather goods, recommend customers to use special leather cleaners and maintenance oils, and avoid using corrosive cleaning products.

[0038] Working principle: When using, observe the degree of damage to the leather surface after removing the original protective layer, use a repairing cream of similar color, and use a small scraper or fingertips to evenly apply the repairing cream to the damaged area under the conditions of an ambient temperature of 20 to 25°C and an ambient humidity of 40% to 70%. After the application is completed, wait for 30 minutes to observe the drying condition. After it is completely dry, polish it flat. According to the original leather color of the item or the color required by the customer, use a transparent test cup and a clean stirring rod to add water-based HP color paste into it. Make sure the texture of the color paste is fine before adding. Then, mix the color paste in proportion according to the color paste instructions, stirring continuously during the process to make it evenly mixed until the color is consistent with the original color of the leather surface of the item, which can repair genuine leather items while meeting the color change requirements; put the adjusted color paste into the spray gun, control the air pressure of the spray gun between 0.4Mpa and 0.6Mpa for the first spraying, control the spray angle to 90°, and keep the distance from the product at 15cm to 20cm. Perform a small area test spray on an inconspicuous part, observe the fluidity, covering power and color after drying of the color paste to check whether the color is uniform and whether it meets the expected effect, adjust the spray gun pressure and color paste concentration according to the results to ensure that the color is uniform and there is no color difference, place the item in front of the water curtain machine, keep a distance of 30cm to 50cm, use the spray gun for formal spraying, use cross-spraying technology during the spraying process, and control the overlapping range between 1 / 3 and 1 / 2 to ensure uniform color coverage. During the color adjustment process, this method of using the spray gun can ensure the overall effect after the color material is sprayed to avoid failure of product color adjustment; use it immediately after the spraying is completed Use oil-absorbing paper to gently press the leather surface to absorb excess color paste and oil to make the leather surface smoother and brighter. Pay attention to the number of times the oil-absorbing paper is used during the process. The number of times the oil-absorbing paper is used in the same area should not exceed 3 times to avoid excessive absorption of color and affect the final result. After drying, choose an emulsion or liquid polish suitable for genuine leather. Avoid using waxy polish to avoid clogging the pores. Use a soft cloth or sponge to evenly apply the polish, paying attention to the edges and details. Repeat 2 to 3 times to make the repaired leather smoother, brighter, and have good color performance.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A leather goods renovation method based on leather surface color change technology, comprising the following steps: Step 1, remove the original protective layer; Step 2, repair and polish; Step 3, color adjustment; Step 4, test spraying; Step 5, spraying; Step 6, post-processing; Step 7, drying and fixing; Step 8, optimizing color; Step 9, inspection and delivery; It is characterized by: In the above step 1, the old protective layer of the leather goods to be refurbished is removed; In the above step 2, the damaged points on the leather goods are repaired; In the above step 3, the original leather surface color or the color required by the customer is prepared; In step 4 above, try spraying the color and check the effect; In the above step 5, the color is sprayed formally; In the above step 6, the leather goods after spraying are post-processed with color paste; In the above step 7, the leather product after the treatment is dried; In the above step eight, the color of the leather goods is optimized; In the above step nine, the leather refurbishment effect is checked and delivered to the customer.

2. The leather goods renovation method based on the leather surface color changing technology according to claim 1 is characterized in that: In the step 1, the leather product to be repaired is confirmed to ensure that the leather material is first-layer leather or second-layer leather, and artificial leather or other synthetic materials are avoided; a mild film remover and 70% concentration of medical alcohol are diluted according to the instructions, and a clean cotton swab is dipped in the mixed solution and gently wipes the leather surface. During the wiping process, the wiping force is controlled and the force is applied evenly. After wiping, check whether the leather surface is clean and flat, and whether it is completely removed.

3. The leather goods renovation method based on the leather surface color changing technology according to claim 1 is characterized in that: In the step 2, observe the degree of damage to the leather surface after removing the original protective layer, use a repairing cream of similar color, and use a small scraper or fingertips to evenly apply the repairing cream to the damaged area under the conditions of an ambient temperature of 20 to 25°C and an ambient humidity of 40% to 70%. After application, wait for 30 minutes to observe the drying condition, and polish it to make it smooth after it is completely dry.

4. The leather goods renovation method based on the leather surface color changing technology according to claim 1 is characterized in that: In the step three, according to the original leather color of the item or the color required by the customer, use a transparent test cup and a clean stirring rod to add the water-based HP color paste therein, ensure that the texture of the color paste is fine before adding, and then mix the proportions according to the color paste instructions, stirring continuously during the process to mix them evenly until the color is consistent with the original color of the leather surface of the item.

5. The leather goods renovation method based on the leather surface color changing technology according to claim 1 is characterized in that: In the step 4, the adjusted color paste is placed in the spray gun, and the air pressure of the spray gun is controlled between 0.4Mpa and 0.6Mpa for the first spraying, the spraying angle is controlled to 90°, and the distance from the product is 15cm to 20cm. A small area of ​​test spraying is performed on an inconspicuous part to observe the fluidity, covering power and color after drying of the color paste to check whether the color is uniform and whether it meets the expected effect. The spray gun pressure and color paste concentration are adjusted according to the results to ensure that the color is uniform and there is no color difference.

6. The leather goods renovation method based on leather surface color changing technology according to claim 1, characterized in that: In the step 5, the object is placed in front of the water curtain machine, maintaining a distance of 30 cm to 50 cm, and a spray gun is used for formal spraying. The cross-spraying technology is used during the spraying process, and the overlapping range is controlled between 1 / 3 and 1 / 2 to ensure uniform color coverage.

7. The leather goods renovation method based on leather surface color changing technology according to claim 1, characterized in that: In step six, immediately after spraying, use oil-absorbing paper to gently press the leather surface to absorb excess color paste and oil, making the leather surface smoother and brighter. Pay attention to the number of times the oil-absorbing paper is used during the process. The number of times the oil-absorbing paper is used in the same area should not exceed 3 times to avoid too much color being absorbed and affecting the final result.

8. The leather goods renovation method based on leather surface color changing technology according to claim 1 is characterized in that: In the step seven, place the painted leather in a cool and ventilated place to avoid high temperature and direct sunlight. You can choose to use curtains or sun visors to block strong sunlight, while maintaining a certain light for observation. The ambient temperature during the drying process should be 15 to 25°C, and must not exceed 30°C. The ambient humidity is 40% to 60%, and must not exceed 70%. Use a fan at a medium wind speed at a distance of 1m from the leather to keep air circulating and accelerate the drying process, but do not aim the fan directly at the leather surface of the item.

9. The leather goods renovation method based on leather surface color changing technology according to claim 1, characterized in that: In step eight, choose an emulsion or liquid polish suitable for dermis, avoid using waxy polish to avoid clogging pores, use a soft cloth or sponge to evenly apply the polish, paying attention to the edges and details, and repeat 2 to 3 times.

10. The leather goods renovation method based on leather surface color changing technology according to claim 1, characterized in that: In step nine, observe and check the overall effect of the leather goods under natural light, pay attention to the uniformity of color and glossiness. If there are defects, use a small brush and color paste to make local corrections. Repeat the drying and glazing steps if necessary. Provide customers with detailed maintenance instructions, including how to clean, store and regularly maintain leather goods. Recommend customers to use special leather cleaners and maintenance oils, and avoid using corrosive cleaning products.

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