A method, system, device, and medium for dye recipe tinting

Abstract

The application discloses a dye prescription color matching method, system, device and medium, and relates to the technical field of dyeing. The method comprises the following steps: randomly and unlimitedly proportionally mixing a reserved color sample, determining a first-dyeing prescription according to a mixing proportion when a mixed color is matched with a color of a standard sample and a dyeing prescription of the reserved color sample, performing first-dyeing on the first-dyeing prescription to obtain a first-dyeing sample; taking the color of the standard sample as a reference, taking each previous dyeing sample as a test sample to perform color matching, and obtaining an intermediate-dyeing sample; randomly and unlimitedly proportionally mixing the first-dyeing sample and the intermediate-dyeing sample, determining a last-dyeing prescription according to a mixing proportion when a mixed color is matched with the color of the standard sample and dyeing prescriptions of the first-dyeing sample and the intermediate-dyeing sample, performing last-dyeing on the last-dyeing prescription to obtain a last-dyeing sample; and mixing each dyeing sample according to a weight proportion of each dyeing sample to obtain a final dyeing sample. The application can reduce the color matching difficulty and improve the one-time success rate of color matching after dyeing.

Description

Technical Field

[0001] This invention relates to the field of dyeing technology, and in particular to a dye formulation color matching method, system, equipment and medium. Background Technology

[0002] In the textile industry, color appearance is a crucial quality indicator, and the color requested by the customer becomes the standard color for the company's production. Order quantities vary, and in actual production, companies determine the dyeing batches based on daily capacity and order volume. Color matching technicians first determine the prescription for the first dyeing batch based on the standard color. Subsequent rounds of color matching are then carried out according to the production schedule until all required dyeing materials are used. Finally, colors are mixed and blended based on the percentage of each dye sample relative to the total dyeing material. This process requires experienced colorists to make multiple adjustments to the color to complete the process.

[0003] However, the success rate of matching the overall color after mixing and matching with the customer's standard color is only 50%. Furthermore, the initial dyeing sample may deviate from the customer's standard sample due to differences in raw material batches, dye batches, and other factors. This necessitates subsequent replenishment, color correction, re-dyeing, and re-matching, increasing the production cycle and costs, reducing production efficiency, and hindering the progress of newly recruited color matching technicians lacking experience. Therefore, a theoretical calculation method applicable to color matching technology is needed as an innovative basis to solve this technical problem. Summary of the Invention

[0004] The purpose of this invention is to provide a dye formulation color matching method, system, equipment and medium to reduce the difficulty of color matching and improve the success rate of color matching after dyeing.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A dye formulation color matching method, comprising:

[0007] The total number of dyeing vats, the weight percentage of each dyeing sample in each vat, the compatible dyes, and the reserved color samples are determined based on the standard sample and the total weight. The reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample. The total number of dyeing vats is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2.

[0008] The archived color samples are randomly mixed in an unrestricted proportion. The dyeing formula for the first dyeing batch is determined based on the mixing proportion when the mixed color matches the color of the standard sample and the dyeing formula of the archived color samples. The first dyeing batch is then performed according to the dyeing formula to obtain the dyed sample.

[0009] When performing any intermediate dyeing, the color of the standard sample is used as a reference, and the previous dyeing samples are used as samples for color adjustment to obtain an intermediate dyeing sample whose brightness, saturation, red-green value and yellow-blue value are all opposite to the first dyeing sample.

[0010] The first dyeing sample and the intermediate dyeing sample are randomly mixed in an unrestricted proportion. The final dyeing formula is determined based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing formula of the first dyeing sample and the intermediate dyeing sample. The final dyeing is then performed according to the final dyeing formula to obtain the final dyeing sample.

[0011] Based on the weight ratio of the dyed samples in each cylinder, the dyed samples in the first cylinder, the dyed samples in the middle cylinder, and the dyed samples in the last cylinder are mixed to obtain the final dyed sample.

[0012] Optionally, the archived color samples are randomly mixed in any proportion, and a first-dye formula is determined based on the mixing ratio when the mixed colors match the standard sample color and the dyeing formula of the archived color samples. First-dyeing is then performed according to the first-dye formula to obtain a first-dye sample, specifically including:

[0013] The archived color samples are randomly mixed in any proportion to obtain several mixed samples of archived color samples.

[0014] Calculate the difference in lightness, saturation, red-green value, yellow-blue value, and total color difference between each of the archived color sample blends and the standard sample, and determine the blending ratio of the archived color sample blends that reaches the set level of color difference rating as the first blending ratio;

[0015] Using the first mixing ratio as the weight, the amount of each compatible dye in the archived color sample is weighted and summed to obtain the first batch dyeing prescription;

[0016] The head vat is stained according to the stated head vat staining formula to obtain a head vat stained sample.

[0017] Optionally, the first dyeing sample and the intermediate dyeing sample are randomly mixed in any proportion, and the final dyeing formula is determined based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing formula of the first dyeing sample and the intermediate dyeing sample. The final dyeing is then performed according to the final dyeing formula to obtain the final dyeing sample. Specifically, this includes:

[0018] The dyed sample from the first cylinder and the dyed sample from the intermediate cylinder are randomly mixed in an unrestricted proportion to obtain several mixed samples of dyed samples.

[0019] Calculate the difference in lightness, saturation, red-green value, yellow-blue value, and total color difference between each of the dyed sample blends and the standard sample, and determine the blending ratio of the dyed sample blends that reaches the set level of color difference rating as the second blending ratio;

[0020] The proportion of compatible dyes in each tank is determined based on the second mixing ratio and the weight ratio of each dyeing sample in each tank.

[0021] Using the proportion of each dye in each batch as a weight, the amount of each dye in the first batch dyeing sample and the second batch dyeing sample is weighted and summed to obtain the final batch dyeing formula.

[0022] Perform final staining according to the final staining formula to obtain the final staining sample.

[0023] Optionally, the proportion of compatible dyes in each batch is determined based on the second blending ratio and the weight percentage of each dyeing sample, specifically including:

[0024] Calculate the difference between the second blending ratio and the weight percentage of the corresponding dyeing sample in each batch, and divide the difference by the weight percentage of the final dyeing sample to obtain the proportion of the blended dyes in each batch.

[0025] Optionally, the color difference rating is calculated based on the relationship between the total color difference value and the fastness level using the standard CIE19+76L*a*b*color difference formula; the set level is 5.

[0026] Optionally, the blended dye is a two-color dye, a three-color dye, or a four-color dye.

[0027] A dye formulation color matching system, comprising:

[0028] The pre-dyeing preparation module is used to determine the total number of dyeing batches, the weight percentage of each dyeing sample in each batch, the compatible dyes, and the reserved color samples based on the standard sample and the total weight. The reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample. The total number of dyeing batches is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2.

[0029] The first dyeing module is used to randomly mix the archived color samples in an unrestricted proportion, and determine the first dyeing prescription based on the mixing proportion when the mixed color matches the color of the standard sample and the dyeing prescription of the archived color samples, so as to perform first dyeing according to the first dyeing prescription to obtain the first dyed sample.

[0030] The intermediate dyeing module is used to adjust the color of the intermediate dyeing sample by taking the standard sample color as a reference and the dyeing samples of each previous dyeing sample as samples when performing dyeing in any intermediate dyeing sample, so as to obtain an intermediate dyeing sample whose brightness, saturation, red-green value and yellow-blue value are all opposite to the first dyeing sample.

[0031] The final dyeing module is used to randomly and without restriction mix the first dyeing sample and the intermediate dyeing sample in an unrestricted proportion, and determine the final dyeing prescription based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing prescription of the first dyeing sample and the intermediate dyeing sample, so as to perform final dyeing according to the final dyeing prescription to obtain the final dyeing sample.

[0032] The final dyeing module is used to mix the first dyeing sample, the middle dyeing sample, and the last dyeing sample according to the weight ratio of each dyeing sample to obtain the final dyeing sample.

[0033] An electronic device includes a memory and a processor, the memory storing a computer program, and the processor running the computer program to cause the electronic device to perform the dye prescription color matching method described above.

[0034] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described dye prescription color matching method.

[0035] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0036] The dye prescription color matching method provided by this invention utilizes a pre-dyeing first-batch dyeing prescription color matching method and a final-batch dyeing prescription color matching method during the dyeing process. It involves randomly mixing archived color samples in unlimited proportions, determining the first-batch dyeing prescription based on the mixing proportion when the mixed color matches the standard sample and the dyeing prescription of the archived color samples. Similarly, it involves randomly mixing the first-batch and intermediate-batch dyeing samples in unlimited proportions, determining the final-batch dyeing prescription based on the mixing proportion when the mixed color matches the standard sample and the dyeing prescriptions of the first-batch and intermediate-batch dyeing samples. This provides a theoretical calculation basis for dye prescription color matching technology, overcoming the high difficulty caused by the reliance on extensive experience in color matching. Furthermore, since both the first-batch and final-batch dyeing samples match the standard sample, it improves the one-time success rate of color matching after dyeing. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A flowchart of the dye formulation color matching method provided by the present invention;

[0039] Figure 2 This is a block diagram of the dye formulation color matching system provided by the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The purpose of this invention is to provide a dye formulation color matching method, system, equipment and medium to reduce the difficulty of color matching and improve the success rate of color matching after dyeing.

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] This invention provides a dye formulation color matching method, such as... Figure 1 As shown, the method includes:

[0044] Step S1: Determine the total number of dyeing vats, the weight percentage of each dyeing sample in each vat, the compatible dyes, and the reserved color samples based on the standard sample and the total weight; the reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample; wherein, the total number of dyeing vats is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2.

[0045] Furthermore, the compatible dyes are two-color dyes, three-color dyes, or four-color dyes.

[0046] The number of dyes used in the color blend is determined based on the customer's desired color. The number of dyes used ranges from 2 to 4, including two-color, three-color, and four-color blends. This embodiment uses a three-color blend.

[0047] The same color can be blended using multiple formulations based on existing dyes. However, the selection of dyeing formulations needs to consider several factors, including: 1. Whether the dye type differs from the customer's color selection, resulting in metamerism; 2. Color quality issues, such as various fastness indicators and the color stability of the finished product; 3. Dye cost. Therefore, the dyeing formulations for the archived color samples are high-quality, optimized formulations produced in batches, and have excellent reference value.

[0048] Step S2: Randomly mix the archived color samples in an unrestricted proportion, and determine the head dyeing formula based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing formula of the archived color samples, so as to perform head dyeing according to the head dyeing formula to obtain the head dyed sample.

[0049] Step S2 specifically includes:

[0050] Step S21: Randomly mix the archived color samples in an unrestricted proportion to obtain several mixed samples of archived color samples.

[0051] Step S22: Calculate the difference in lightness, saturation, red-green value, yellow-blue value, and total color difference between each of the archived color sample blends and the standard sample, and determine the blending ratio of the archived color sample blends that reaches the set level of color difference rating as the first blending ratio.

[0052] Step S23: Using the first mixing ratio as the weight, the amount of each compatible dye in the reserved color sample is weighted and summed to obtain the first batch dyeing formula.

[0053] Step S24: Perform head dyeing according to the head dyeing formula to obtain head dyeing sample.

[0054] Taking the use of three compatible dyes for dyeing as an example, the specific formula for the color-matching method of the pre-dyeing dyeing prescription is as follows:

[0055]

[0056]

[0057]

[0058] In the formula: f(x), f(y), and f(z) represent the weight percentage (0–10%) of each dye relative to the weight of the dyed material in the first dyeing batch formula to be calculated; m i x represents the percentage (0-100%) of the i-th archived color sample when the colors of the various archived color samples are mixed and matched with the standard sample; i y i and z i, respectively, represent the weight percentage (0-10%) of each dye relative to the weight of the dyed material in the dyeing formula of the i-th archived color sample; i is the serial number of the archived color sample; n is the total number of archived color samples.

[0059] For example, if a dyeing formula consists of three dyes, A, B, and C, then x is the ratio of the weight of dye A to the weight of the fiber being dyed, y is the ratio of the weight of dye B to the weight of the fiber being dyed, and z is the ratio of the weight of dye C to the weight of the fiber being dyed. The archived color samples are previously archived color samples, with at least two samples. Each color sample has the opposite characteristics to the standard sample in terms of hue, saturation, and lightness values; and the dyes in each archived color sample's dyeing formula are of the same category.

[0060] The specific procedure for color mixing of the pre-dyeing dyeing prescription is as follows:

[0061] A: Select n color samples (n≥2) from the historical archived color samples based on the color of the customer's standard sample. The hue, lightness, and saturation values ​​of the n archived color samples are relatively close to those of the standard sample, and the hue and shade of the archived color samples are roughly opposite to those of the standard sample.

[0062] B: The dyeing formulas for the n archived color samples all use the same type of dye. The proportion of the dye in each formula is x. i y i and z i .

[0063] C: The archived color samples are then randomly mixed in any proportion, with the mixing ratios between the archived color samples being m respectively. i That is, the blending ratio of the first archived color sample is m1, the blending ratio of the second archived color sample is m2, and so on, with the blending ratio of the i-th archived color sample being m. i Furthermore, the sum of the mixing ratios of all color samples is 100%.

[0064] D: The D65 light source is used as the standard color matching light source. The color difference between the mixed sample and the standard sample is tested by a colorimeter. When the color difference is rated as level 5, the weight percentages f(x), f(y), and f(z) of each dye relative to the weight of the dyed material in the first dyeing batch can be quickly calculated using the calculation formula of the color matching method of the first dyeing batch. It can be directly put into production without the need for sampling, saving time and effort.

[0065] In textile dyeing, the initial dyeing prescription is typically prepared by creating a small sample based on the customer's standard sample color. During the sample-making process, repeated color adjustments are required before another sample is produced. This iterative process often fails to achieve the exact color of the standard sample, proving time-consuming and labor-intensive. Furthermore, the color difference between the large and small samples is difficult to control, making it challenging to determine the initial dyeing prescription quickly. The color adjustment calculation method for the pre-dyeing initial dyeing prescription provided by this invention offers the advantage of rapidly determining the dye ratio without the need for small samples.

[0066] Step S3: When performing dyeing in any intermediate batch, the color of the standard sample is used as a reference, and the dyed samples from each batch (i.e., the dyed samples) are used as samples for color adjustment to obtain an intermediate batch dyed sample in which the brightness, saturation, red-green value and yellow-blue value are all in the opposite state to the dyed sample in the first batch.

[0067] Step S4: Randomly mix the first dyeing sample and the intermediate dyeing sample in an unrestricted proportion, and determine the final dyeing formula based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing formula of the first dyeing sample and the intermediate dyeing sample, so as to perform final dyeing according to the final dyeing formula to obtain the final dyeing sample.

[0068] Step S4 specifically includes:

[0069] Step S41: Randomly mix the dyed sample from the head cylinder and the dyed sample from the intermediate cylinder in any proportion to obtain several mixed dyed samples.

[0070] Step S42: Calculate the lightness difference, saturation difference, red-green value difference, yellow-blue value difference, and total color difference between each of the dyed sample blends and the standard sample, and determine the blending ratio of the dyed sample blends that reaches the set level of color difference rating as the second blending ratio.

[0071] Step S43: Determine the proportion of compatible dyes in each batch based on the second blending ratio and the weight percentage of the dyed samples in each batch. Specifically, calculate the difference (t) between the second blending ratio and the weight percentage of the dyed samples in the corresponding batch. j -s j ), and divide the difference by the percentage of the final stained sample weight [1-(s1+...+s k The proportion of dyes in each batch was obtained.

[0072] Step S44: Using the proportion of each dye in each batch as a weight, the amount of each dye in the first batch dyeing sample and the intermediate batch dyeing sample is weighted and summed to obtain the final batch dyeing formula.

[0073] Step S45: Perform final staining according to the final staining formula to obtain the final staining sample.

[0074] Taking the use of three compatible dyes as an example, the specific formula for the color adjustment method of the final dyeing batch during the dyeing process is as follows:

[0075]

[0076]

[0077]

[0078] In the formula: d(e), d(g), and d(h) are the weight percentages (0–10%) of each dye relative to the weight of the dyed material in the final dyeing formula; e j g j h j These represent the weight percentages (0–10%) of each dye relative to the weight of the dyed material in the dyeing formula for the j-th dyeing sample, wherein the types of dyes in the dyeing formula for each dyeing sample are consistent; s j The percentage of the total weight of the dyed sample in the j-th batch (less than 100%), wherein the sum of the percentages of all dyed samples and the undyed sample in the last batch constitutes 100% of the total weight of the sample, and each dyed sample has opposite characteristics in hue, saturation, and lightness values ​​to the standard sample; t j The relative weight percentage (0-100%) of the j-th dyed sample that can match the color of the standard sample after mixing the dyed samples (including the first dyed sample and the intermediate dyed sample), and the sum of the percentages of each dyed sample is 100%; [1-(s1+...+s k [)] represents the weight percentage (less than 100%) of the final dyeing sample in the total number of dyeing samples. j is the sequence number of the dyed sample; k is the total number of dyed samples, which is equal to the total number of dyeing batches minus 1.

[0079] Preferably, the color difference rating is calculated based on the relationship between the total color difference value and the fastness level using the standard CIE19+76L*a*b*color difference formula; the set level is 5.

[0080] Step S5: Based on the weight ratio of the dyeing samples in each cylinder, the dyeing samples in the first cylinder, the middle cylinder, and the last cylinder are mixed to obtain the final dyeing sample.

[0081] The overall process of the color-matching method for the dyeing prescription provided by this invention is as follows:

[0082] A: Before dyeing, the weight of the desired color is calculated based on the customer's requirements. Then, the dyeing process is divided into k+1 dyeing batches according to the weight and batch type. The last batch is the k+1th batch. The percentage of the dyed sample weight in the first batch is s1, the percentage in the second batch is s2, and so on, until the percentage in the kth batch is s... k The percentage of unstained sample in the last jar is 100% - (s1 + s2 + ... + s...). k ).

[0083] B: The first dyeing batch, calculated using the pre-dyeing batch dyeing formula color matching method, is directly used for the first round of dyeing, with a weight percentage of s1. The dye ratios f(x), f(y), and f(z) in the formula are respectively e1, g1, and h1. Because the batches of dyes and raw materials used in the first dyeing batch and the archived color sample will differ to some extent due to time and season, there will be some difference in the color matching degree with the standard sample. Therefore, color matching is required for the second dyeing batch.

[0084] C: The weight percentage of the second round of dyeing is s2. Since it's not the final batch, the color mixing technique is relatively simple. During color mixing, the standard sample color is used as the reference, and the first batch color sample is used as the test sample. Its lightness (L*), red-green value (a*), and yellow-blue value (b*) are opposite in sign to the first batch color's L*, a*, and b* values ​​relative to the standard sample's L*, a*, and b* values, but their absolute values ​​are not necessarily equal. There's no need to consider whether the color is mixed perfectly in one go. The dye ratios in the dyeing formula are e2, g2, and h2, and so on, with the weight percentage of the batch before the final batch being s2. k The dye ratio in its dyeing formula is e k g k and h k .

[0085] D: The last dyeing batch is the k+1th batch. Since there will be no more opportunities for color adjustment later, the dyeing prescription for the last batch needs to be adjusted in one go so that the color can match the standard sample after all the color samples are dyed and mixed.

[0086] E: The first k dyed color samples are randomly mixed in any proportion. The mixing proportion in the first batch is t1, the mixing proportion in the second batch is t2, and so on, with the mixing proportion in the kth batch being t... k And t1+t2+....+t k =100%.

[0087] F: The D65 light source is used as the standard color matching light source. The color difference between the mixed sample of dyed samples (excluding the final batch) and the standard sample is tested by a colorimeter. When the color difference is rated as level 5, the weight percentages d(e), d(g), and d(h) of each dye relative to the weight of the dyed material in the k+1th batch (final batch) can be quickly calculated by the color matching formula of the final batch.

[0088] G: After the final dyeing batch is dyed according to the calculated dyeing prescription, the customer's required order quantity will be fully dyed. Then, the samples are blended according to the percentage of the total weight of each dyeing sample (including the final batch). Using a D65 light source as the standard color matching light source, the total color difference (DE) between the blended sample and the standard sample can be controlled within 0.2. The color difference rating can reach level 5 according to the relationship between the total color difference value and the fastness grade of the standard CIE19+76L*a*b*color difference formula.

[0089] The present invention will be further described below with reference to specific embodiments.

[0090] Example 1: Beige 219, order quantity 1000 meters, sample product.

[0091] Before dyeing, the first dyeing batch prescription is determined: four color samples (1#, 2#, 3#, and 4#) are selected from the archived color samples, and the hue, lightness, and saturation values ​​of the four color samples are opposite to those of the standard sample. The dyes in the dyeing prescription are all Saimarin Red, Yellow, and Gray. The archived color samples 1#, 2#, 3#, and 4# are randomly mixed in an unrestricted proportion. When the mixing proportions are 20%, 25%, 40%, and 15%, respectively, the mixed color matches the color of the customer's standard sample. With 1# as sample 1, 2# as sample 2, 3# as sample 3, 4# as sample 4, and the mixed sample as sample 5, the color characteristic values ​​are compared with the standard sample in Table 1.

[0092] Table 1. Comparison of color characteristic values ​​of samples 1-5 and standard sample in Example 1

[0093]

[0094]

[0095] In this system, L* represents lightness, indicating the brightness or darkness of a color; a smaller value indicates a darker color, and vice versa. a* represents red-green hue, indicating the color's reddish-green tint; a positive a* value indicates a reddish tint, and a negative a* value indicates a greenish tint. b* represents yellow-blue hue, indicating the color's yellowish-blue tint; a positive b* value indicates a yellowish tint, and a negative b* value indicates a bluish tint. C* represents saturation, indicating the color's vividness; a smaller C* value indicates a higher proportion of achromatic components. Hue (H) represents the color's appearance. Total color difference (ΔE) represents the degree of difference between two colors.

[0096] The formulas for calculating total color difference and saturation are as follows:

[0097] ΔE=(Δa* 2 +Δb* 2 +ΔL* 2 ) 1 / 2 ;

[0098] In the formula: Δa*=a* 试样 -a* 标样 ; Δb*=b* 试样 -b* 标样 ; ΔL*=L* 试样 -L* 标样 ;

[0099] ΔC*=[(a*) 2 +(b*) 2 ] 1 / 2试样 —[(a*) 2 +(b*) 2 ] 1 / 2 标样 .

[0100] Among them, the smaller the ΔE value, the closer the color appearance of the sample is to the standard sample; a positive Δa* value indicates that the sample is more reddish than the standard sample, and a negative Δa* value indicates that the sample is more greenish than the standard sample; a positive Δb* value indicates that the sample is more yellowish than the standard sample, and a negative Δb* value indicates that the sample is more bluish than the standard sample; a positive ΔL* value indicates that the sample is lighter than the standard sample, and a negative ΔL* value indicates that the sample is darker than the standard sample; a negative ΔC* value indicates that the sample has lower chroma and higher achromatic components than the standard sample, and a positive ΔC* value indicates that the sample has higher chroma and lower achromatic components than the standard sample. The smaller the absolute values ​​of Δa*, Δb*, ΔL*, and ΔC*, the closer the color characteristic values ​​of the sample and the standard sample are, and the closer the colors are to isochromatic.

[0101] Table 2 shows the relationship between the total color difference value and the fastness grade of the standard CIE19+76L*a*b* color difference formula. When the color difference rating is 5, the sample and the standard sample will be almost identical in color, approaching perfect color.

[0102] Table 2. Relationship between total color difference value and fastness grade in CIE19+76L*a*b* color difference formula.

[0103] Total color difference ΔE Fastness level Total color difference ΔE Fastness level Total color difference ΔE Fastness level ≤13.6 Level 1 ≤5.6 Level 2-3 ≤2.1 Level 4 ≤11.6 Level 1-2 ≤4.1 Level 3 ≤1.3 Level 4-5 ≤8.2 Level 2 ≤3.0 Level 3-4 ≤0.4 Level 5

[0104] Using a D65 light source as the color matching light source, the color difference ratings of color samples #1, #2, #3, and #4 relative to the standard sample are all level 4 or 4-5. However, the color sample mixed at a ratio of 20%:25%:40%:15% shows a very small difference in color characteristic value compared to the standard sample, reaching level 5 color difference. Table 3 shows the dyeing prescriptions and mixing ratios for the archived color samples #1, #2, #3, and #4. The required dyeing prescription for the first dyeing batch is calculated based on the color matching method of the pre-dyeing dyeing prescription, without the need for sampling.

[0105] Table 3. Dyeing prescriptions and mixing ratios for archived color samples from Example 1.

[0106]

[0107] The amounts of the dyes Seymour Red f(x), Yellow f(y), and Gray f(z) in the first dyeing batch are:

[0108] f(x)=(x1*20%+x2*25%+x3*40%+x4*15)=0.195%;

[0109] f(y)=(y1*20%+y2*25%+y3*40%+y4*15)=0.46%;

[0110] f(z)=(z1*20%+z2*25%+z3*40%+z4*15)=0.283%.

[0111] The calculated dyeing input is 330 kg. Dyeing is performed in three stages using a German TS23# dye vat (maximum 120 kg per stage). The first dyeing cycle, using the first vat formula, involves 100 kg (30% of the total samples, designated as dyed sample #1). The dyes and raw materials used in the first dyeing cycle will vary slightly from the archived samples due to time and season variations, resulting in some degree of color matching with the standard sample. The second dyeing cycle involves 112 kg (34% of the total samples, designated as dyed sample #2). Color matching is based on the standard sample color, using the first vat color as a sample, ensuring its hue, saturation, and brightness values ​​are opposite to the first vat color. This color matching process is relatively less technically demanding as it is not the final dyeing cycle. The third dyeing cycle involves 118 kg (36% of the total samples, designated as undyed sample #3). Since this is the final dyeing cycle and there are no further color matching opportunities, it needs to be adjusted precisely in one go to achieve color matching with the standard sample after all samples have been dyed. Even highly experienced colorists struggle to overcome this technical challenge, achieving a success rate of only 50% based on experience alone. Therefore, following the color mixing method for the final dyeing batch, samples 1# and 2# were randomly and without restriction in proportion. When the actual mixing ratios of color 1# and color 2# were 40% and 60% respectively, the mixed color matched the standard sample color, with a color difference of level 5. The specific parameters of the dyeing prescription and mixing ratios are shown in Table 4.

[0112] Table 4. Staining prescriptions for stained samples in Example 1 and their weight ratios when matched with standard samples.

[0113]

[0114] The amounts of the dyes Saimaran Red d(e), Yellow d(g), and Gray d(h) in the dyeing formula for the final dyeing vat #3 are:

[0115] d(e)=[e1(t1-s1)+e2(t2-s2)] / [1-(s1+s2)]=0.209%;

[0116] d(g)=[g1(t1-s1)+g2(t2-s2)] / [1-(s1+s2)]=0.393%;

[0117] d(h)=[h1(t1-s1)+h2(t2-s2)] / [1-(s1+s2)]=0.302%.

[0118] After color sample #3 was dyed using this formula, color sample #1 was blended at 30%, color sample #2 at 34%, and color sample #3 at 36% by weight. The absolute values ​​of the color characteristic values ​​Δa*, Δb*, and ΔL* between the mixed color and the standard color were close to zero, achieving a color difference rating of level 5. No residual inventory was generated, no re-coloring or touch-up was required, and the color success rate was 100%, meeting customer needs. This also provides a reference for novice color matching technicians. Table 5 shows the color characteristic values ​​of the mixed sample (using color samples #1 and #2 as sample 1) and the mixed sample (using color samples #1, #2, and #3 as sample 2), compared to the standard sample.

[0119] Table 5. Comparison of color characteristic values ​​of samples 1-2 and standard sample in Example 1.

[0120]

[0121]

[0122] Example 2: Watermelon Red, order quantity 5000 meters, sample product.

[0123] Before dyeing, the first dyeing batch prescription is determined: Two color samples (1# and 2#) are selected from the archived color samples, and the hue, lightness, and saturation values ​​of the two color samples are opposite to those of the standard sample. The dyes in the dyeing prescription are all Lanasin Red, Yellow, and Blue. The archived color samples 1# and 2# are randomly mixed in any proportion. When the mixing ratios are 50% and 50% respectively, the mixed color matches the customer's standard sample color. Using 1# as sample 1, 2# as sample 2, and the mixed sample as sample 3, the color characteristic values ​​are compared with the standard sample, as shown in Table 6.

[0124] Table 6. Comparison of color characteristic values ​​of samples 1-3 and standard sample in Example 2.

[0125] Color sample Total color difference ΔE ΔL* ΔC* Δa* Δb* Color difference rating Sample 1 0.56 passed 0.32 light 0.08 saturation 0.14 Red 0.13 Yellow Level 4-5 Sample 2 0.48 passed -0.31 depth -0.06 undersaturated -0.10 Green -0.16 Lan Level 4-5 Mixed Sample 3 0.08 qualified 0.01 similarity 0.02 similarity 0.04 Red -0.03 Lan Level 5

[0126] Using a D65 light source as the color matching light source, the color characteristic values ​​of color samples #1 and #2 are quite opposite to those of the standard sample, with color difference ratings of 4-5 for both. However, the color obtained by mixing the two samples at a 50%:50% ratio achieves a color difference rating of 5 compared to the standard sample, and the color characteristic value is very similar to that of the standard sample. The dyeing prescriptions and mixing ratios for archived color samples #1 and #2 are shown in Table 7. The required dyeing prescription for the first dyeing batch is calculated based on the color matching method of the pre-dyeing batch dyeing prescription, without the need for prototyping.

[0127] Table 7. Dyeing prescriptions and mixing ratios for archived color samples from Example 2.

[0128]

[0129] The amounts of Lanneryl Red f(x), Yellow f(y), and Blue f(z) in the first dyeing batch are as follows:

[0130] f(x)=x1*50%+x2*50%=3.75%;

[0131] f(y)=y1*50%+y2*50%=0.2%;

[0132] f(z)=z1*50%+z2*50%=0.25%.

[0133] The calculated dyeing input is 1600 kg. Using a German TS23# dye vat (maximum 120 kg per batch), dyeing is done in four stages. The first round of dyeing, using the first vat formula, involves 120 kg * 2 vats = 240 kg (15% of the total dyed sample, designated as sample #1). The color sample after the first vat dyeing will differ slightly from the archived color sample due to variations in dye and raw material batches caused by time and season, resulting in some degree of color matching with the standard sample. The second round of dyeing involves 120 kg * 4 vats = 480 kg (30% of the total dyed sample, designated as sample #2). Color adjustment is performed based on the difference in hue depth between the first vat color and the standard sample. Since this is not the final vat, the technical complexity is relatively low. The third round of dyeing involves 120 kg * 4 vats (30% of the total dyed sample, designated as sample #3). Color adjustment is performed using the standard sample color as a reference, with the first vat color and the second round dyed sample as samples, ensuring that their hue, saturation, and brightness values ​​are opposite to the first vat color. Because it's not the final dyeing batch, the technical complexity is relatively low. The fourth round of dyeing consists of 100 kg * 4 batches (accounting for 25% of the total dyed samples, designated as undyed sample #3). Since this is the final batch and there are no further opportunities for color adjustment, it needs to be adjusted precisely in one go to achieve color matching with the standard sample after all samples have been dyed. Even highly experienced colorists find this technical challenge difficult, with a success rate of only 50% based on experience alone. Therefore, based on the color adjustment method of the final dyeing batch, the dyed samples #1, #2, and #3 were randomly and without restriction in proportion. When the actual mixing proportions of dyed samples #1, #2, and #3 were 20%, 45%, and 35% respectively, the mixed color matched the standard sample color, with a color difference of level 5. The specific parameters of the dyeing prescription and mixing proportions are shown in Table 8.

[0134] Table 8. Staining prescriptions for stained samples in Example 2 and their weight ratios when matched with standard samples.

[0135]

[0136] The amounts of Lanneryl Red f(x), Yellow f(y), and Blue f(z) in the dyeing formula for the final dyeing batch #4 are:

[0137] d(e)=[e1(t1-s1)+e2(t2-s2)+e3(t3-s3)] / [1-(s1+s2+s3)]=3.85%;

[0138] d(g)=[g1(t1-s1)+g2(t2-s2)+g3(t3-s3)] / [1-(s1+s2+s3)]=0.16%;

[0139] d(h)=[h1(t1-s1)+h2(t2-s2)+h3(t3-s3))] / [1-(s1+s2+s3)]=0.23%.

[0140] After color sample #3 was dyed completely, color sample #1 was blended at a weight percentage of 15%, color sample #2 at 30%, color sample #3 at 30%, and color sample #4 at 25%. The absolute values ​​of the color characteristic values ​​Δa*, Δb*, and ΔL* between the mixed color and the standard color were close to zero, achieving a color difference rating of level 5. No residual inventory was generated, eliminating the need for re-coloring or re-coloring, resulting in a 100% color success rate and meeting customer requirements. This also provides a reference for novice color matching technicians. Table 9 shows the color characteristic values ​​of the blended sample (using color samples #1, #2, and #3) as Sample 1 and the blended sample (using color samples #1, #2, #3, and #4) as Sample 2, compared to the standard sample.

[0141] Table 9 Comparison of color characteristic values ​​of samples 1-2 and standard sample in Example 2

[0142]

[0143] In summary, the method provided by this invention solves the technical problems of relying solely on experience without theoretical calculation in dyeing prescription color matching, and the low first-time success rate of color matching after dyeing is complete. This calculation method has wide applicability. It can serve as the theoretical basis for color matching techniques in small-scale sampling of various textile fibers and different types of dyes, as well as in actual dyeing production. The first-time success rate of color matching after dyeing samples reaches over 95%, offering the advantages of fast and accurate color matching. It also shortens the production cycle, improves production efficiency, and reduces costs. Furthermore, it has a rapid learning effect on color matching techniques for new technicians.

[0144] To implement the above methods and achieve the corresponding functions and technical effects, a dye formulation color matching system is provided below, such as... Figure 2 As shown, the system includes:

[0145] The pre-dyeing preparation module 1 is used to determine the total number of dyeing vats, the weight ratio of each dyeing sample in each vat, the compatible dyes, and the reserved color samples based on the standard sample and the total weight. The reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample. The total number of dyeing vats is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2.

[0146] The first dyeing module 2 is used to randomly mix the archived color samples in an unrestricted proportion, and determine the first dyeing prescription based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing prescription of the archived color samples, so as to perform first dyeing according to the first dyeing prescription to obtain the first dyed sample.

[0147] The intermediate dyeing module 3 is used to adjust the color of the intermediate dyeing sample by taking the standard sample color as a reference and the dyeing samples of each previous dyeing sample as samples when performing dyeing in any intermediate dyeing sample, so as to obtain an intermediate dyeing sample whose brightness, saturation, red-green value and yellow-blue value are all opposite to the dyeing sample of the first dyeing sample.

[0148] The final dyeing module 4 is used to randomly and without restriction mix the first dyeing sample and the intermediate dyeing sample in an unrestricted proportion, and determine the final dyeing prescription based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing prescription of the first dyeing sample and the intermediate dyeing sample, so as to perform final dyeing according to the final dyeing prescription to obtain the final dyeing sample.

[0149] The final dyeing module 5 is used to mix the first dyeing sample, the middle dyeing sample, and the last dyeing sample according to the weight ratio of each dyeing sample to obtain the final dyeing sample.

[0150] The present invention also provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to cause the electronic device to perform the dye prescription color-matching method described above. The electronic device may be a server.

[0151] In addition, the present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described dye prescription color matching method.

[0152] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the method section.

[0153] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for color matching a dye formulation, characterized in that, include: Determine the total number of dyeing vats, the weight percentage of each dyeing sample in each vat, the compatible dyes, and the archived color samples based on the standard samples and the total weight. The reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample; wherein, the total number of dyeing vats is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2. The archived color samples are randomly mixed in an unrestricted proportion. The dyeing formula for the first dyeing batch is determined based on the mixing proportion when the mixed color matches the color of the standard sample and the dyeing formula of the archived color samples. The first dyeing batch is then performed according to the dyeing formula to obtain the dyed sample. When performing any intermediate dyeing, the color of the standard sample is used as a reference, and the previous dyeing samples are used as samples for color adjustment to obtain an intermediate dyeing sample whose brightness, saturation, red-green value and yellow-blue value are all opposite to the first dyeing sample. The first dyeing sample and the intermediate dyeing sample are randomly mixed in an unrestricted proportion. The final dyeing formula is determined based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing formula of the first dyeing sample and the intermediate dyeing sample. The final dyeing is then performed according to the final dyeing formula to obtain the final dyeing sample. Based on the weight ratio of the dyed samples in each cylinder, the dyed samples in the first cylinder, the dyed samples in the middle cylinder, and the dyed samples in the last cylinder are mixed to obtain the final dyed sample.

2. The dye formulation color matching method according to claim 1, characterized in that, The archived color samples are randomly mixed in any proportion. A first-dye formula is determined based on the mixing ratio when the mixed colors match the standard sample color and the dyeing formula of the archived color samples. First-dyeing is then performed according to the first-dye formula to obtain a first-dye sample. Specifically, this includes: The archived color samples are randomly mixed in any proportion to obtain several mixed samples of archived color samples. Calculate the difference in lightness, saturation, red-green value, yellow-blue value, and total color difference between each of the archived color sample blends and the standard sample, and determine the blending ratio of the archived color sample blends that reaches the set level of color difference rating as the first blending ratio; Using the first mixing ratio as the weight, the amount of each compatible dye in the archived color sample is weighted and summed to obtain the first batch dyeing prescription; The head vat is stained according to the stated head vat staining formula to obtain a head vat stained sample.

3. The dye formulation color matching method according to claim 1, characterized in that, The first dyeing sample and the intermediate dyeing sample are randomly mixed in an unrestricted proportion. The final dyeing formula is determined based on the mixing proportion when the mixed color matches the standard sample color, and the dyeing formulas of the first and intermediate dyeing samples. The final dyeing is then performed according to the final dyeing formula to obtain the final dyeing sample. Specifically, this includes: The dyed sample from the first cylinder and the dyed sample from the intermediate cylinder are randomly mixed in an unrestricted proportion to obtain several mixed samples of dyed samples. Calculate the difference in lightness, saturation, red-green value, yellow-blue value, and total color difference between each of the dyed sample blends and the standard sample, and determine the blending ratio of the dyed sample blends that reaches the set level of color difference rating as the second blending ratio; The proportion of compatible dyes in each tank is determined based on the second mixing ratio and the weight ratio of each dyeing sample in each tank. Using the proportion of each dye in each batch as a weight, the amount of each dye in the first batch dyeing sample and the second batch dyeing sample is weighted and summed to obtain the final batch dyeing formula. Perform final staining according to the final staining formula to obtain the final staining sample.

4. The dye formulation color-matching method according to claim 3, characterized in that, The proportion of compatible dyes in each batch is determined based on the second blending ratio and the weight percentage of each dyeing sample, specifically including: Calculate the difference between the second blending ratio and the weight percentage of the corresponding dyeing sample in each batch, and divide the difference by the weight percentage of the final dyeing sample to obtain the proportion of the blended dyes in each batch.

5. The dye formulation color matching method according to claim 2 or 3, characterized in that, The color difference rating is calculated based on the relationship between the total color difference value and the fastness level using the standard CIE19+76L*a*b* color difference formula; the set level is 5.

6. The dye formulation color matching method according to claim 1, characterized in that, The blended dyes are two-color dyes, three-color dyes, or four-color dyes.

7. A dye formulation color matching system, characterized in that, include: The pre-dyeing preparation module is used to determine the total number of dyeing batches, the weight percentage of each dyeing sample in each batch, the compatible dyes, and the reserved color samples based on the standard sample and the total weight. The reserved color samples are several samples obtained by mixing the compatible dyes using a known dyeing formula, and the lightness, saturation, red-green value, and yellow-blue value of each reserved color sample are opposite to those of the standard sample. The total number of dyeing batches is greater than or equal to 3; the number of compatible dyes is greater than or equal to 2; and the number of reserved color samples is greater than or equal to 2. The first dyeing module is used to randomly mix the archived color samples in an unrestricted proportion, and determine the first dyeing prescription based on the mixing proportion when the mixed color matches the color of the standard sample and the dyeing prescription of the archived color samples, so as to perform first dyeing according to the first dyeing prescription to obtain the first dyed sample. The intermediate dyeing module is used to adjust the color of the intermediate dyeing sample by taking the standard sample color as a reference and the dyeing samples of each previous dyeing sample as samples when performing dyeing in any intermediate dyeing sample, so as to obtain an intermediate dyeing sample whose brightness, saturation, red-green value and yellow-blue value are all opposite to the first dyeing sample. The final dyeing module is used to randomly and without restriction mix the first dyeing sample and the intermediate dyeing sample in an unrestricted proportion, and determine the final dyeing prescription based on the mixing ratio when the mixed color matches the color of the standard sample and the dyeing prescription of the first dyeing sample and the intermediate dyeing sample, so as to perform final dyeing according to the final dyeing prescription to obtain the final dyeing sample. The final dyeing module is used to mix the first dyeing sample, the middle dyeing sample, and the last dyeing sample according to the weight ratio of each dyeing sample to obtain the final dyeing sample.

8. An electronic device, characterized in that, The device includes a memory and a processor, the memory being used to store a computer program, and the processor running the computer program to cause the electronic device to perform the dye formulation color matching method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the dye formulation color matching method as described in any one of claims 1 to 6.

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