A hybrid hair wig processing technology for shape memory function

Abstract

The invention discloses a processing process for a hybrid hair wig with shape memory function, including steps of washing, soaking, tube wrapping, shaping, stress relief, sampling detection and re-baking. The hair to be treated is soaked in a TCEP solution, which can repair the broken old bonds of the hair fibers, repair the damaged hydrogen bonds and disulfide bonds between the macromolecules of the hair fibers, reduce the degree of shrinkage of the hair fibers after shaping, reduce the curl recovery rate of the curly hair, and use a wet heat shaping method to curl and shape the hair. The processing shaping parameters of the shaping treatment for 40 minutes under an environment of 114°C are conducive to water molecules entering the hair fibers during the shaping process of the curly hair, reduce the binding energy between the protein fiber macromolecules, and can make the hydrogen bonds and salt bonds between the fiber macromolecules easy to break up, and the fiber macromolecules are rearranged. A stable peptide chain conformation can be established at the new position of the hair fiber, so that the curly hair has the best shaping effect.

Description

Technical Field

[0001] The invention relates to the field of wig production, and in particular to a processing technology for a hybrid hair wig with shape memory function. Background Art

[0002] Hair is a multicellular fibrous substance composed mainly of keratin (accounting for about 95% of the mass of dry hair). Keratin is composed of amino acids. Each hair is composed of epidermal scale layer, cortex layer and medulla layer. The outermost layer of hair is the epidermal scale layer, which is usually composed of 2 to 4 layers of scales. The cortex layer is the main body of the hair, which is composed of several layers of prismatic keratinized cortical cells, and the cells contain a large number of pigment particles. The diameter of the cortical cell is about 2 to 3 μm, and it is composed of many basal fibrils, microfibrils and macrofibrils. The diameter of the basal fibril is only about 2×10-3 μm, and it is composed of 2 to 3 strands of α-helical keratin. The medulla layer is located in the center of the hair and is composed of 2 to 3 layers of wrinkled cubic keratinized cells. The ends of the hair and the vellus hair have no medulla.

[0003] There are three main types of wig materials on the market: full hair (i.e. 100% hair fiber), chemical fiber hair (i.e. 100% synthetic fiber) and mixed hair (i.e. hair fiber + synthetic fiber). As the raw material of hair products, synthetic fiber is not restricted by resources, has been industrialized, has low cost and low price, and has become the mainstream of the hair products market. Moreover, various colors and varieties can be changed in time according to market demand, and the product has high added value. In order to make the performance of synthetic fibers closer to natural hair, people are constantly developing new fiber varieties for wigs or studying various modification methods of existing fibers. Commonly used synthetic fibers in hair product production include polyvinyl chloride (PVC)-based fibers, polyacrylonitrile (PAN)-based fibers, polyester (mainly PET)-based fibers, polypropylene (PP)-based fibers and protein-based fibers.

[0004] In the production process of mixed hair wigs, in order to meet the needs of different customers for wig hairstyles, the mixed hair needs to be curled and shaped. The existing curling method is to curl the cleaned and shaped hair using aluminum tube heating. The degree of curling is determined by the diameter of the aluminum tube, which is convenient for making wigs of different curvatures. The shaped wig is then placed in a high-temperature oven, and the temperature suitable for hair shaping is adjusted for shaping. Generally, the shaping time required for different curling degrees is also different, usually 60 to 80 minutes. In general, synthetic fibers are shaped using dry heat, and human hair is shaped using wet heat.

[0005] Heat setting is to use the thermoplasticity of the fiber to heat treat the fiber so that it maintains a certain size and shape. Heat setting is an important part of the production process of wig curly hair, and its process flow is winding tube - entering the kang room - dismantling the tube. Tube winding is to use aluminum tubes to wrap the hair on the spring in strands on the aluminum tube according to the product's process standards. The winding should be round and tight, with uniform thickness, and the edges should be neat and symmetrical. There are two ways of winding tubes: opposite and straight. Entering the kang room is the technical core part of heat setting, and the setting of process parameters (such as setting temperature, setting time, etc.) directly determines the setting effect. Dismantling the tube is to dismantle the semi-finished aluminum tube after setting. Do not remove the hair, twist, or loose tails, and classify and place the aluminum tubes.

[0006] Heat setting can be divided into dry heat setting and wet heat setting. Dry heat setting is to wrap the fiber around a tube and place it in a setting cabinet to set it in a dry hot air environment. This setting method is only suitable for synthetic fibers. The curl fastness of hair fibers after dry heat setting is poor, the curl shape is short-lived, and it is easily damaged by external forces. In order to solve this industry problem, hair fibers are usually set in a wet and hot environment (such as hot steam) during production, and the internal structure of the fiber is changed by the action of moisture to achieve the ideal setting effect. The curl fastness of hair fibers processed by wet heat setting is also improved accordingly.

[0007] From the process flow of heat setting, it can be seen that some thermal properties of fibers have a direct and important influence on the processing of hair products, especially the thermal transition temperature of fibers, which determines the heat setting temperature when the fiber is processed into wig products.

[0008] After dry heat setting, the curl fastness of hair fibers is poor, the curl shape is short-lived, and it is easily damaged by external forces. In order to solve this industry problem, hair fibers are usually set in a humid and hot environment (such as hot steam) during production, and the internal structure of the fiber is changed by the action of moisture to achieve the ideal setting effect.

[0009] The curl fastness of hair fibers processed by the wet heat setting process is also improved accordingly, but the hybrid hair needs to be stretched during the production process. Since the hydrogen bonds and disulfide bonds between the macromolecules of the hair fibers are destroyed, the hair fibers are prone to shrinkage after setting, resulting in a high curl recovery rate and a poor setting effect. Therefore, we propose a hybrid hair wig processing process for shape memory function. Summary of the invention

[0010] The main purpose of the present invention is to provide a hybrid hair cover processing technology for shape memory function, which can effectively solve the problems in the background technology.

[0011] To achieve the above object, the technical solution adopted by the present invention is:

[0012] A hybrid hair wig processing process for shape memory function comprises the following steps:

[0013] S1. Cleaning: Soak the hair to be treated in a cleaning pool, rinse it repeatedly with running water for 3 to 5 minutes, take it out, comb it neatly, and place it in a hot air circulation dryer to dry it at a temperature of 40±1°C to constant weight. By rinsing it with running water multiple times, impurities and dust attached to the surface of the hair can be removed, which is conducive to subsequent processing;

[0014] S2. Soaking: Select a TCEP solution with a mass concentration of 7.5g / L, with a hair-to-liquid ratio of 1:100, soak in an environment of 60-70°C for 40 minutes, then clean and dry at a temperature of 40±1°C. The TCEP solution is a polypeptide chain reducing agent that can repair broken old bonds of hair fibers, repair damaged hydrogen bonds and disulfide bonds between macromolecules of hair fibers, reduce the degree of retraction of hair fibers after shaping, and reduce the curl recovery rate of curls, thereby improving the shaping effect of curls;

[0015] S3. Tube winding: select an aluminum tube of corresponding size according to the required curl, use a 20mm pitch, and evenly wind the hair in a spiral shape around the outside of the aluminum tube, and place the aluminum tube with the hair wrapped in distilled water to soak;

[0016] S4, shaping: the wet hair in step S3 is placed in a steam shaping cabinet, and after shaping treatment at 114°C for 40 minutes, it is taken out and naturally cooled to room temperature. After the sample is treated in a wet state, water molecules enter the hair fibers during the shaping process of the curls, reducing the binding energy between the protein fiber macromolecules, making it easy to break up the hydrogen bonds and salt bonds between the fiber macromolecules, and rearranging the fiber macromolecules. When the temperature does not reach 114°C, the pressure of the steam cabinet is small, and the water molecules can make it easy to break up the hydrogen bonds and salt bonds between the fiber macromolecules, but when the macromolecules are rearranged, due to the temperature and pressure, they cannot establish a stable peptide chain conformation at the new position, so that the curls cannot achieve a good curl shaping effect. However, when the temperature exceeds 114°C, due to the excessively high temperature, the structure and performance of the hair fibers undergo certain changes, which in turn affects the curl elasticity of the curls. When the shaping temperature reaches 114°C, due to the high temperature, the pressure of the steam cabinet increases, and the rearranged fiber macromolecules can establish a stable peptide chain at the new position. In addition, when the sample is treated in a wet state, the curly hair shaping effect does not gradually improve with the extension of time. When the hair sample is shaped in a steam cabinet, water molecules enter the hair fiber and can easily break up the hydrogen bonds and salt bonds between molecules. When the shaping temperature is 114℃ and the shaping time is 40min, the broken macromolecules are rearranged and a stable peptide chain conformation can be established at the new position. Moreover, under this temperature and time condition, the structure and performance of the hair fiber will not be seriously affected. When the setting time is long, although the fiber macromolecules are rearranged and a stable peptide chain conformation can be established at the new position, the setting time is relatively long, so it has a greater impact on the structure and performance of the hair fiber, so the curl elastic recovery rate of the curly hair is small, so the setting effect of the curly hair is poor. When the setting time is short, water molecules cannot completely enter the hair fiber, and the hair fiber cannot form stable intermolecular hydrogen bonds, and its structure and performance are in an unstable state.

[0017] S5, stress removal: the hair strands treated in step S4 are treated in boiling water for 5 to 10 minutes, then taken out and naturally dried at room temperature. The hair strands treated with waste water can remove the stress between the hair strands after the shaping, making the hair strands smoother;

[0018] S6, sampling test: randomly sampling the hair strands treated in step S5, and dividing the hair strands into several groups of 50 hair strands, and testing the shaping effect of the sampled hair strands respectively;

[0019] S7, re-drying: the batch of samples that failed to meet the setting effect requirements in step S6 are reset in the steam setting cabinet, and are taken out after secondary setting treatment at 114° C. for 10 minutes, and are naturally cooled to room temperature. At this time, the unqualified hair samples are re-wound and set, so as to perform secondary setting treatment on the hair samples to improve the qualified rate of the product and improve the performance of the curling hair.

[0020] Furthermore, in step S3, the moisture content of the hair is 30%. When the moisture content is 30%, the hair has the best wet heat setting effect.

[0021] Furthermore, the shaping effect detection items are the curl elastic recovery rate, curl elastic persistence and residual strength of the hair sample.

[0022] Furthermore, the requirements for the qualified shaping effect in step S7 are: the curl elastic recovery rate of the hair sample is not less than 80% of the initial state, the curl elastic recovery rate of the hair sample after one week is not less than 50% of the initial state, and the residual strength of the hair sample is not less than 90%.

[0023] Furthermore, the test method of the curl elastic recovery rate of the hair sample is as follows: clamp the hair sample at about 10 mm on one end with a fishtail clip, hang it on a hook, let the curled hair hang freely, read and record at about 10 mm on the tail of the hair, calculate the natural curl length L0 of the curled hair before adding load, clamp the hair sample at about 10 mm on the other end with a fishtail clip, make it free and vertical, the curled hair is stretched, read and record at the tail of the hair clamped by the fishtail clip, calculate the stretched length L1 of the curled hair when adding load, start timing from the completion of the straightening length test to 45 minutes as the loading stage, after 15 minutes, remove the load on the tail of the hair, let the curled hair shrink freely, and read within 3 seconds. The length of the curled hair after retraction is recorded, and the natural length of the curled hair after the first load is tested is 2L; then the load is clamped, and after another 15 minutes, the natural length of the curled hair after the second load is tested is L3, and then the load is clamped, and after another 15 minutes, the natural length of the curled hair after the third load is tested is L4. After the natural length of the curled hair after the third load is tested, the load is removed. After 15 minutes, the length of the first curled hair after natural recovery is L5, and after another 15 minutes, the length of the second curled hair after natural recovery is L6, and after another 15 minutes, the length of the third curled hair after natural recovery is L7, and the recorded values ​​are substituted into the calculation formula, which is:

[0024] The first stage is when there is a load state:

[0025]

[0026]

[0027]

[0028] The first stage is when there is no load:

[0029]

[0030]

[0031]

[0032] Where: L0 is the length of the curly hair in its natural state (mm); L I L is the tensile length of the curl when load is applied (mm); L2 is the natural length of the curl after the load is removed 15 minutes (mm); L3 is the natural length of the curl after the load is removed 30 minutes (mm); L4 is the natural length of the curl after the load is removed 45 minutes (mm); L5 is the natural length of the curl after the load is removed 60 minutes (mm); 75 is the natural length of the curl after 15 minutes (mm); L7 is the natural length of the curl after 90 minutes (mm).

[0033] Furthermore, the test method for the curl elasticity durability of the hair sample is as follows: the straight length of the hair before shaping is L1, the straight hair winding tube is placed in the shaping device for shaping, the shaped spiral curl is unfolded to spread the hair, and then rolled into a bundle, one end of the hair curtain is tied with a rubber band, and then hung on a hook, so that the curl is in a free hanging state, the length of the bundled hair tail is read on a steel ruler, and the natural curl length L0 of the bundled curl is calculated. Due to the influence of the weight of the curled hair, the temperature and humidity of the atmospheric environment, and the gradual change of the internal structure of the hair fiber, the natural length of the curl gradually increases. Gradually lengthen, one day later, read the length of the hair tail on the steel ruler, and calculate the natural curl length L2 of the hair bundle curls, two days later, read the length of the hair tail on the steel ruler, and calculate the natural curl length L3 of the hair bundle curls, three days later, read the length of the hair tail on the steel ruler, and calculate the natural curl length L4 of the hair bundle curls, according to this method, calculate the natural curl length of the hair fiber after four days, five days, six days, and seven days respectively, L5, L6, L7, and L8, and bring the recorded data into the curl persistence calculation formula, the calculation formula is:

[0034]

[0035]

[0036]

[0037]

[0038]

[0039]

[0040]

[0041] Where: L0 is the length of the curly hair in its natural state after shaping (mm); L I L is the straightened length of the hair before shaping (mm); L2 is the natural length of the curly hair on the first day (mm); L3 is the natural length of the curly hair on the second day (mm); L4 is the natural length of the curly hair on the third day (mm); L5 is the natural length of the curly hair on the fourth day (mm); 75 is the natural length of the curly hair on the fifth day (mm); L7 is the natural length of the curly hair on the sixth day (mm); L8 is the natural length of the curly hair on the seventh day (mm).

[0042] Furthermore, the residual strength detection method of the hair sample is as follows: three groups of hair samples before and after the shaping treatment are taken, and each group of hair samples is cut into a length of 150 mm, and the strength values ​​of the hair samples before and after the shaping treatment are measured using an electronic strength meter. The test parameters are: sample length: 150 mm, clamping distance of the clamp 100 mm, stretching speed 100 mm / min, pre-tension 0.03 cN, the tensile breaking strength value of the hair sample before the shaping treatment is recorded as p0 (cN / dtex), and the tensile breaking strength value of the hair sample after the shaping treatment is recorded as p1 (cN / dtex), and then the p0 and p1 values ​​are substituted into the residual strength calculation formula to calculate the residual strength value. The calculation formula is as follows:

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] (1) Through the new treatment process proposed by the present invention, the hair to be treated is soaked in a high-quality polypeptide chain reducing agent TCEP solution, which can repair the broken old bonds of the hair fibers, repair the damaged hydrogen bonds and disulfide bonds between the macromolecules of the hair fibers, reduce the degree of shrinkage of the hair fibers after shaping, reduce the curl recovery rate of the curls, and thus improve the shaping effect of the curls;

[0045] (2) Through the new processing technology proposed by the present invention, the hair is curled and shaped by a wet heat setting method, and the processing setting parameters are set at 114°C for 40 minutes. After the sample is wet treated, water molecules enter the hair fiber during the curling process, reducing the binding energy between protein fiber macromolecules, making it easy to break up the hydrogen bonds and salt bonds between the fiber macromolecules, and rearranging the fiber macromolecules. A stable peptide chain conformation can be established at the new position of the hair fiber, so that the curl has the best setting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1The present invention is a process flow chart of a hybrid hair cover processing process for shape memory function. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific implementation methods of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0048] Example 1

[0049] like Figure 1 As shown, a hybrid hair cover processing process for shape memory function includes the following steps:

[0050] S1. Cleaning: Soak the hair to be treated in a cleaning tank, rinse it repeatedly with running water for 3 to 5 minutes, take it out, comb it neatly, place it in a hot air circulation dryer, and dry it at a temperature of 40±1℃ to constant weight;

[0051] S2, soaking: select a TCEP solution with a mass concentration of 7.5g / L, with a hair-liquid ratio of 1:100, soak in an environment of 60-70℃ for 40min, clean and dry at a temperature of 40±1℃;

[0052] S3. Tube wrapping: Select an aluminum tube of corresponding size according to the required curl, and evenly wrap the hair in a spiral shape around the outside of the aluminum tube, and soak the aluminum tube with the hair wrapped in distilled water;

[0053] S4, shaping: putting the hair soaked in step S3 into a steam shaping cabinet, shaping it at 114° C. for 40 minutes, then taking it out and cooling it naturally to room temperature;

[0054] S5, stress relief: the hair after the shaping treatment in step S4 is treated in boiling water for 5 to 10 minutes, then taken out and dried naturally at room temperature;

[0055] S6, sampling test: randomly sampling the hair strands treated in step S5, and dividing the hair strands into several groups of 50 hair strands, and testing the shaping effect of the sampled hair strands respectively;

[0056] S7, re-drying: the batch of samples that did not meet the setting effect requirements in step S6 are reset in the steam setting cabinet, and after a secondary setting treatment at 114°C for 10 minutes, they are taken out and naturally cooled to room temperature.

[0057] In step S3, the moisture content of the hair is 30%.

[0058] The testing items for the shaping effect are curl elastic recovery rate, curl elastic durability and tensile breaking strength.

[0059] The requirement for a qualified shaping effect in step S7 is that the curl elastic recovery rate of the hair is not less than 80% of the initial state and the curl elastic recovery rate of the sample hair after one week is not less than 50% of the initial state.

[0060] By adopting the above technical scheme: in the soaking step, a TCEP solution with a mass concentration of 7.5g / L is selected, and the hair-liquid ratio is 1:100. After immersion treatment in an environment of 60-70°C for 40 minutes, it is cleaned and dried at a temperature of 40±1°C. The TCEP solution is a polypeptide chain reducing agent, which can repair broken old bonds of hair fibers, repair damaged hydrogen bonds and disulfide bonds between macromolecules of hair fibers, reduce the degree of shrinkage of hair fibers after shaping, and reduce the curl recovery rate of curls, thereby improving the shaping effect of curls. In the shaping process, a wet heat shaping process is adopted. After the sample is treated in a wet state, water molecules enter the hair fibers during the shaping process of the curls, reducing the protein fiber macromolecules. The binding energy between them can make the hydrogen bonds and salt bonds between fiber macromolecules easy to break up, and the fiber macromolecules can be rearranged. When the temperature does not reach 114℃, the pressure of the steam cabinet is small, and water molecules can make the hydrogen bonds and salt bonds between fiber macromolecules easy to break up. However, due to the temperature and pressure, they cannot establish a stable peptide chain conformation in the new position when the macromolecules are rearranged, so the curling hair cannot achieve a good curling and shaping effect. However, when the temperature exceeds 114℃, due to the high temperature, the structure and performance of the hair fiber have undergone certain changes, which in turn affects the curling elasticity of the curling hair. When the shaping temperature reaches 114℃, due to the high temperature, the pressure of the steam cabinet increases, and the rearranged fiber macromolecules can establish a stable conformation in the new position. The peptide chain conformation of curly hair has the best setting effect. In addition, when the sample is treated in a wet state, the setting effect of curly hair does not gradually improve with the extension of time. When the hair sample is set in a steam cabinet, water molecules enter the hair fiber and can easily break up the hydrogen bonds and salt bonds between molecules. When the setting temperature is 114°C and the setting time is 40 minutes, the broken macromolecules are rearranged and a stable peptide chain conformation can be established at the new position. Moreover, under this temperature and time condition, the structure and performance of the hair fiber will not change seriously, so it has the best setting effect. When the setting time is long, although the fiber macromolecules are rearranged and a stable peptide chain conformation can be established at the new position, the setting time is relatively too long, so for the hair fiber. The structure and performance of the hair are greatly affected, so the curl elastic recovery rate of the curly hair is small, so the shaping effect of the curly hair is poor. When the shaping time is short, the water molecules cannot completely enter the hair fiber, and the hair fiber cannot form stable intermolecular hydrogen bonds. Its structure and performance are in an unstable state. Therefore, the processing shaping parameters of 40 minutes of shaping treatment at 114°C are adopted. After the sample is wet-treated, water molecules enter the hair fiber during the shaping process of the curly hair, which reduces the binding energy between the protein fiber macromolecules, and can make the hydrogen bonds and salt bonds between the fiber macromolecules easy to break up. The fiber macromolecules are rearranged, and a stable peptide chain conformation can be established at the new position of the hair fiber, so that the curly hair has the best shaping effect.

[0061] Example 2

[0062] like Figure 1 As shown, a hybrid hair cover processing process for shape memory function includes the following steps:

[0063] S1. Cleaning: Soak the hair to be treated in a cleaning tank, rinse it repeatedly with running water for 3 to 5 minutes, take it out, comb it neatly, place it in a hot air circulation dryer, and dry it at a temperature of 40±1℃ to constant weight;

[0064] S2, soaking: select a TCEP solution with a mass concentration of 7.5g / L, with a hair-liquid ratio of 1:100, soak in an environment of 60-70℃ for 40min, clean and dry at a temperature of 40±1℃;

[0065] S3. Tube wrapping: Select an aluminum tube of corresponding size according to the required curl, and evenly wrap the hair in a spiral shape around the outside of the aluminum tube, and soak the aluminum tube with the hair wrapped in distilled water;

[0066] S4, shaping: putting the hair soaked in step S3 into a steam shaping cabinet, shaping it at 114° C. for 40 minutes, then taking it out and cooling it naturally to room temperature;

[0067] S5, stress relief: the hair after the shaping treatment in step S4 is treated in boiling water for 5 to 10 minutes, then taken out and dried naturally at room temperature;

[0068] S6, sampling test: randomly sampling the hair strands treated in step S5, and dividing the hair strands into several groups of 50 hair strands, and testing the shaping effect of the sampled hair strands respectively;

[0069] S7, re-drying: the batch of samples that did not meet the setting effect requirements in step S6 are reset in the steam setting cabinet, and after a secondary setting treatment at 114°C for 10 minutes, they are taken out and naturally cooled to room temperature.

[0070] The testing items for the shaping effect are curl elastic recovery rate, curl elastic durability and tensile breaking strength.

[0071] The requirement for the qualified shaping effect in step S7 is that the curl elastic recovery rate of the hair is not less than 80% of the initial state and the curl elastic recovery rate of the sample hair after one week is not less than 50% of the initial state.

[0072] By adopting the above technical solution: In the present application, unlike conventional processing technology, after the wet heat setting treatment, the hair is subjected to stress relief treatment by boiling water heating, which can eliminate the residual stress between the hair strands and between the hair fibers after the tube winding setting. In addition, the hair samples after the setting are tested for indicators such as curl elastic recovery rate, curl elastic durability and tensile fracture strength by random sampling, and the unqualified samples are re-dried. Among them, the possible reasons for the unqualified products are: during the tube winding process, the hair is spirally and evenly wound around the outside of the aluminum tube, and the aluminum tube wrapped with the hair is placed in a steamer. The hair bundles are soaked in distilled water. During the wet heat setting, the outer layer of the hair is in full contact with the water vapor, while the inner layer of the hair is covered and wrapped inside and cannot be fully in contact with the water vapor, resulting in the failure of water molecules to fully enter the hair fibers during the curling process. When the macromolecules are rearranged, they cannot establish a stable peptide chain at the new position due to temperature and pressure, resulting in poor curling and setting effects. Re-drying the unqualified batches of samples is conducive to the re-entry of water molecules into the hair fibers, enabling them to establish a stable peptide chain at a new position, forming a stable structure and improving the setting effect.

[0073] Example 3

[0074] like Figure 1 As shown, a hybrid hair cover processing process for shape memory function includes the following steps:

[0075] S1. Cleaning: Soak the hair to be treated in a cleaning tank, rinse it repeatedly with running water for 3 to 5 minutes, take it out, comb it neatly, place it in a hot air circulation dryer, and dry it at a temperature of 40±1℃ to constant weight;

[0076] S2, soaking: select a TCEP solution with a mass concentration of 7.5g / L, with a hair-liquid ratio of 1:100, soak in an environment of 60-70℃ for 40min, clean and dry at a temperature of 40±1℃;

[0077] S3. Tube wrapping: Select an aluminum tube of corresponding size according to the required curl, and evenly wrap the hair in a spiral shape around the outside of the aluminum tube, and soak the aluminum tube with the hair wrapped in distilled water;

[0078] S4, shaping: putting the hair soaked in step S3 into a steam shaping cabinet, shaping it at 114° C. for 40 minutes, then taking it out and cooling it naturally to room temperature;

[0079] S5, stress relief: the hair after the shaping treatment in step S4 is treated in boiling water for 5 to 10 minutes, then taken out and dried naturally at room temperature;

[0080] S6, sampling test: randomly sampling the hair strands treated in step S5, and dividing the hair strands into several groups of 50 hair strands, and testing the shaping effect of the sampled hair strands respectively;

[0081] S7, re-drying: the batch of samples that did not meet the setting effect requirements in step S6 are reset in the steam setting cabinet, and after a secondary setting treatment at 114°C for 10 minutes, they are taken out and naturally cooled to room temperature.

[0082] By adopting the above technical solution: soaking the treated hair with a high-quality polypeptide chain reducing agent TCEP solution, the broken old bonds of the hair fibers can be repaired, the damaged hydrogen bonds and disulfide bonds between the macromolecules of the hair fibers can be repaired, the shrinkage degree of the hair fibers after shaping can be reduced, and the curl recovery rate of the curls can be reduced, thereby improving the shaping effect of the curls. The hair can be soaked in the TCEP solution before the hair winding process. At this time, the hair has not been subjected to the wet heat shaping treatment. In a stable environment, soaking in the solution is conducive to the repair of the damaged hydrogen bonds and disulfide bonds between the macromolecules in the hair fibers, thereby improving the hair quality. It improves the overall performance of hair fibers and is beneficial to improving the shaping effect of hair wet heat shaping treatment. In addition, in the actual processing process, the soaking process can also be carried out simultaneously with the shaping process. The prepared TCEP solution is added to the water tank of the steam setting cabinet at a hair-liquid ratio of 1:100. The TCEP solution is heated and evaporated to the surface of the hair. In the steam setting cabinet, since the temperature and pressure are both at a high state, it is beneficial to promote the occurrence of chemical reactions and repair the broken old bonds of the hair fibers. At the same time, under the state of high temperature and high pressure, the hair fibers are prompted to establish stable peptide chains in new positions, thereby improving the curling and shaping effect of curly hair.

[0083] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A process for processing a hybrid hair wig with shape memory function, characterized in that: The following steps are involved: S1. Cleaning: Soak the hair to be treated in a cleaning tank, rinse it repeatedly with running water for 3-5 minutes, take it out, comb it neatly, place it in a hot air circulation dryer, and dry it at a temperature of 40±1℃ to constant weight; S2, soaking: select a TCEP solution with a mass concentration of 7.5 g / L, with a liquid-to-water ratio of 1:100, soak in an environment of 60-70°C for 40 min, then clean and dry at a temperature of 40±1°C; S3. Tube wrapping: Select an aluminum tube of corresponding size according to the required curl, and evenly wrap the hair in a spiral shape around the outside of the aluminum tube, and soak the aluminum tube with the hair wrapped in distilled water; S4, shaping: putting the hair soaked in step S3 into a steam shaping cabinet, shaping it at 114° C. for 40 minutes, then taking it out and cooling it naturally to room temperature; S5, stress relief: the hair after the shaping treatment in step S4 is treated in boiling water for 5-10 minutes, then taken out and dried naturally at room temperature; S6, sampling test: randomly sampling the hair strands treated in step S5, and dividing the hair strands into several groups of 50 hair strands, and testing the shaping effect of the sampled hair strands respectively; S7, re-drying: the batch of samples that did not meet the setting effect requirements in step S6 are reset in the steam setting cabinet, and after a secondary setting treatment at 114° C. for 10 minutes, they are taken out and naturally cooled to room temperature; the requirements for a qualified setting effect are: the curl elastic recovery rate of the hair sample is not less than 80% of the initial state, the curl elastic recovery rate of the hair sample after one week is not less than 50% of the initial state, and the residual strength of the hair sample is not less than 90%.

2. A process for processing a hybrid hair wig with shape memory function according to claim 1, characterized in that: In step S3, the moisture content of the hair is 30%.

3. The process for processing a hybrid hair wig with shape memory function according to claim 1, characterized in that: The shaping effect detection items are the curl elastic recovery rate, curl elastic persistence and residual strength of the hair sample.

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