Manufacturing method of sheet eyelash 3D model

Abstract

The invention discloses a sheet eyelash 3D modeling manufacturing method, which relates to the technical field of false eyelashes, and comprises the steps of base material selection, false eyelash cutting, line combining or hot melting, biological safety pretreatment and allergen removal, high-temperature shaping, temperature-sensitive intelligent coating spraying, 3D shaping, quality screening, dynamic fatigue pre-testing, parameter calibration, clamping and the like. Through high-temperature shaping of a reel pipe and precise shaping of a 3D shaping machine, eyelash wires form layered and staggered space radians, the three-dimensional state that original eyelashes grow from hair follicles is perfectly simulated, the visual defects of stiffness and falseness in the prior art are thoroughly overcome, the modeling trueness and the natural sense are remarkably improved, and by means of application of automatic equipment such as laser cutting, a clamping machine and a dispensing machine, the production efficiency is greatly improved. And in cooperation with mature laminating and micro-spraying processes, the cost is controlled while the consistency of mass production is guaranteed, the high-efficiency and standardized production requirements are met, and support is provided for large-scale application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of false eyelashes, in particular to a manufacturing method of sheet eyelash 3D modeling. BACKGROUND

[0002] The long, curved, black, flashing and energetic eyelashes play an important role in eye type beauty and the whole facial beauty. The eyelashes are arranged in a semi-arc shape, and the eyelashes can highlight the outline of the eyes and add the charm of the eyes. False eyelashes are a kind of eye makeup, which usually uses false eyelashes to increase the density or length of human eyelashes to play a decorative effect

[0003] The traditional false eyelashes have all the hair bundles in the same plane, lack the natural and staggered spatial level of real eyelashes, and have a relatively "stiff", "fake", "heavy" or "sparse and unnatural" visual effect, which is difficult to imitate the clear and three-dimensional curl of the original eyelashes. In addition, the multi-layer composite and three-dimensional molding technology cannot be effectively combined in the process, resulting in limitations in structural stability, wearing comfort and batch production consistency, and it is difficult to balance naturalness, durability and production efficiency. SUMMARY

[0004] The purpose of the present application is to provide a manufacturing method of sheet eyelash 3D modeling to solve at least any problem in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a manufacturing method of sheet eyelash 3D modeling, characterized in that the specific steps of the manufacturing method of sheet eyelash 3D modeling are as follows:

[0006] S1: base material selection and cleaning;

[0007] S2: cutting out eyelash pieces by a laser cutting device;

[0008] S3: combining two or more eyelash pieces;

[0009] S4: combining or hot melting the combined eyelash pieces;

[0010] S5: cleaning the combined or hot melted eyelash pieces;

[0011] S6: biological safety pretreatment and allergen removal of the eyelash pieces;

[0012] S7: pipe curling and high temperature shaping;

[0013] S8: spraying a temperature-sensitive intelligent coating on the false eyelashes by a precise micro-spraying system;

[0014] S9: shaping the false eyelashes by a 3D shaping machine;

[0015] S10: screening the quality of the false eyelashes by a multispectral detection system and an AI defect classification model;

[0016] S11: performing dynamic fatigue pre-testing and parameter calibration on the false eyelashes by a micro fatigue testing machine;

[0017] S12: performing pulling and clamping by an upper clamping machine;

[0018] S13: packing the false eyelashes and performing dispensing by a dispensing machine.

[0019] Preferably, the base material in step S1 is made of PET, PP, PVC or PE plastic material.

[0020] Preferably, in step S2, the cut false eyelash filaments are integrally formed with the eyelash stems.

[0021] Preferably, in step S6, the pretreatment method is to detect pollutants and allergens on the false eyelashes, and the allergen removal is a targeted removal process.

[0022] Preferably, in step S7, the thickness of the sprayed coating is gradiently covered along the length direction of the false eyelashes.

[0023] Preferably, in step S9, the temperature of the 3D shaping machine is set to 100-180 degrees.

[0024] Preferably, in step S10, the quality screening method is hierarchical screening.

[0025] Preferably, in step S11, the testing method is sampling testing.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. In the present application, laser cutting is used to achieve the integration of the eyelash filaments and the stem part, avoiding the problem of splicing and falling off. After improving the density effect by multi-layered hair, the eyelash filaments are precisely shaped by a high-temperature coiling pipe and a 3D shaping machine, so that the eyelash filaments form a layered and staggered spatial curvature, perfectly simulating the three-dimensional state of the growth of original eyelashes from hair follicles. Compared with the traditional false eyelashes, all the hair bundles of the traditional false eyelashes are basically in the same plane, and the false eyelashes completely improve the visual defects of the traditional false eyelashes, such as "rigidity" and "artificiality", and significantly improve the modeling authenticity and naturalness.

[0028] 2. In the present application, hierarchical screening is realized by multispectral detection combined with an AI defect classification model (YOLOv8 architecture), sampling testing by a micro fatigue testing machine and dynamic calibration of process parameters to ensure product durability. The application of automatic equipment such as laser cutting, upper clamping machine and dispensing machine, combined with mature laminating and micro-spraying processes, not only ensures the consistency of mass production, but also controls the cost, meets the demand for efficient and standardized production, and provides support for large-scale application.

[0029] 3. In this invention, biosafety pretreatment and allergen removal, combined with cell and skin model testing, ensure non-toxicity and non-irritation, reducing the risk of allergies. The substrate is made of lightweight PET and other plastics, making it weightless to wear. The temperature-sensitive intelligent coating changes with temperature to achieve a smooth surface during storage and a slightly convex fit during wear, ensuring storage stability and enhancing the fit with natural eyelashes, thus improving wearing comfort. Attached Figure Description

[0030] Figure 1 This is a flowchart of the present invention; Detailed Implementation

[0031] 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.

[0032] This invention provides, for example Figure 1 The method for manufacturing a thin 3D eyelash shape is characterized by the following specific steps:

[0033] S1: Substrate screening and cleaning;

[0034] S2: Eyelashes are cut using a laser cutting device;

[0035] S3: Combine two or more layers of eyelashes;

[0036] S4: After the eyelashes have been combined, they are either sewn together or heat-fused.

[0037] S5: After suturing or heat fusion, remove any excess lashes other than the lash band.

[0038] S6: Perform biosafety pretreatment and allergen removal on eyelashes;

[0039] S6: Tubing and high-temperature setting;

[0040] S7: A temperature-sensitive intelligent coating is applied to false eyelashes using a precision micro-spraying system;

[0041] S9: The false eyelashes are shaped using a 3D shaping machine;

[0042] S91: Real-time quality monitoring of false eyelashes during the 3D shaping process through online 3D scanning and AI detection;

[0043] S10: quality screening of the false eyelashes by the multispectral detection system and the AI defect classification model;

[0044] S11: dynamic fatigue pretest and parameter calibration of the false eyelashes by the micro fatigue testing machine;

[0045] S12: pulling and clamping of the eyelashes by the upper clamping machine;

[0046] S13: boxing of the eyelashes and dispensing by the dispensing machine.

[0047] The base material in step S1 is made of PET, PP, PVC or PE plastic material.

[0048] In step S2, the cut false eyelash filaments are integrally formed with the eyelash stems.

[0049] In step S10, the quality screening is performed by grading screening.

[0050] In step S11, the test method is sampling test.

[0051] In step S7, the thickness of the sprayed coating is gradiently covered along the length direction of the false eyelashes.

[0052] In step S9, the temperature of the 3D shaping machine is set to 100-180 degrees.

[0053] In step S11, the pretreatment method is to detect the pollutants and allergens of the false eyelashes, and the allergen removal is a targeted removal process.

[0054] Further;

[0055] S1: a film made of PET, PP, PVC or PE plastic material with a thickness of 0.07-0.09 mm is selected (the PET, PP, PVC or PE plastic material itself is light and thin, and the false eyelashes made of it have no obvious weight feeling when worn, fit the skin around the eyes, and reduce the foreign body sensation and comfort problem), the base material is detected by a laser scanning system to ensure that there are no bubbles, impurities and crystal points, and the base material that does not meet the requirements is removed to ensure that there are no bubbles, impurities and crystal points, then the base material is placed in an ultrasonic cleaning tank for 5 minutes to remove the surface organic residues;

[0056] S2: First, the parameters of the eyelash piece are input into the control system of the laser cutting device. The substrate is moved to the laser generator by the conveying device. The laser cutting device is started to cut the eyelash piece from the substrate. The traditional false eyelash may use the method of gluing or splicing the eyelash filament and the stem. However, the one-piece design directly processes the eyelash filament and the stem from the same substrate by laser cutting. The connection between the two is tight and stable, which can reduce the risk of eyelash filament falling off or stem breaking during wearing, and prolong the service life of the product. After cutting, the substrate is conveyed to the high-temperature adhesive tape position, and the eyelash piece is glued to the high-temperature adhesive tape. After tearing off the high-temperature adhesive tape, the eyelash piece can be removed from the substrate;

[0057] S3: According to the density requirement of the false eyelash, the eyelash pieces of two or more layers are combined to achieve the desired density effect;

[0058] S4: The combined eyelash pieces are combined or hot-melted;

[0059] Combining: Place the eyelash pieces in a row on the combining machine for transmission. The glue device pulls a string near the stem of the eyelash piece and applies glue, so that the entire row of eyelash pieces are connected together;

[0060] Hot melting: Place the eyelash pieces in a row on the hot melting machine. Place the eyelash piece near the eyelash stem on the hot pressing table under the hot pressing plate. After placing, the hot pressing plate is pressed down, and the eyelash stem is connected together by high temperature;

[0061] S5: After combining or hot melting, the excess stem part is removed to facilitate subsequent processing;

[0062] S6: Use high-performance liquid chromatography-mass spectrometry to detect small molecular pollutants (such as plasticizers, antioxidants, monomer residues) that may be left in the eyelash piece and the combining process. Use enzyme-linked immunosorbent assay (ELISA) to detect potential allergens (such as protein impurities introduced during substrate processing) to ensure that no allergens are detected;

[0063] If residual small pollutants and allergens (such as impurities or allergens introduced during processing) are detected, special cleaning techniques (such as supercritical cleaning, environmentally friendly oxidation, etc.) are used to completely remove these small pollutants or allergens. Finally, through cell and skin model tests, it is confirmed that the treated eyelash has no toxicity and irritation, and ensures that the wearer will not have allergic or uncomfortable phenomena when wearing;

[0064] S7: Place the row of eyelash pieces flat, and use a curling tube to curl the eyelashes (the size of the curling tube determines the curvature of the curled eyelash pieces, and can be selected according to requirements). After curling, place the curling tube in a steaming box for high-temperature sterilization and setting. The temperature of the steaming box is set to 100-110 degrees, and the time is set to 5-15 minutes.

[0065] S8: Use a precision micro-spraying device to spray a temperature-sensitive intelligent coating along the length of the eyelashes (the critical value of the temperature-sensitive intelligent coating is 32 degrees). Implement a thickness gradient coating: gradually thinning from the root to the tip of the eyelash. After coating, perform UV curing for 3 seconds to form a cross-linked network structure.

[0066] Below 32°C (storage state): The coating is in a hydrophilic state, with a smooth surface.

[0067] Above 32°C (wearing state): The coating undergoes a phase transition, forming a micro-convex structure on the surface of the false eyelashes, enhancing the adhesion to natural eyelashes.

[0068] S9: Place the high-temperature set false eyelashes on the setting table of the 3D setting machine. The heating temperature of the 3D setting machine is 100-180 degrees. Press the 3D setting machine to tightly press the 3D profile of the setting mold onto the false eyelash hairs for setting. The temperature range of 100-180 degrees can precisely act on the eyelash pieces that have been previously curled and set by the curling tube. Through heat, the eyelash hairs undergo controllable shape fixation. This process allows the eyelash hairs to form clear layering effects and natural staggered spatial curvature, simulating the three-dimensional distribution state of naturally growing eyelashes from the hair follicles, enhancing the "distinct root" feeling and authenticity of the false eyelashes, and avoiding loose modeling due to insufficient temperature or shape rigidity caused by excessive high temperature. This process is commonly known as "3D pounding" in the industry. The number of times the 3D setting machine is pressed can be selected according to the desired effect of the false eyelashes, such as more pressing for more obvious layering effects. After 3D setting, the false eyelash hairs will exhibit layering effects, forming a spatial layering and natural staggered feeling similar to real eyelash hairs, simulating the distinct root and three-dimensional curl of natural eyelashes, and simulating the spatial distribution state of naturally growing hair follicles.

[0069] S10: The multi-spectral detection system includes integrated ultraviolet, visible, and near-infrared imaging modules to perform full-surface scanning of the false eyelashes and obtain the characteristic spectrum of surface defects (such as micro-cracks) of the false eyelashes.

[0070] Through an AI defect classification model based on deep learning (YOLOv8 architecture), a defect recognition model can be constructed to recognize 5 typical defects, with a detection speed of 500 pieces per minute. The detected false eyelashes are graded.

[0071] Grading and screening mechanism:

[0072] A-grade products (no defects): Enter the next process.

[0073] B-grade (minor defects): marked for rework repair process;

[0074] C-grade (major defects): automatically rejected and recorded defect type for process optimization;

[0075] S11: Use a micro fatigue testing machine equipped with an environmental chamber (temperature 20-40℃, humidity 30-70%) to simulate the bending fatigue test of eye movement (bending angle and frequency);

[0076] Sampling strategy: randomly select 30 pieces of eyelashes from each batch, of which 10 pieces are tested for 1000 cycles, 10 pieces for 5000 cycles, and 10 pieces for 10000 cycles;

[0077] Monitoring indicators:

[0078] Shape retention rate: after 10000 cycles, the curvature retention rate is ≥95% by laser scanning detection;

[0079] Structural integrity: observe the false eyelashes under an optical microscope, and there are no defects such as cracks and delamination;

[0080] Mechanical properties: the tensile strength attenuation rate before and after testing is ≤5%;

[0081] Parameter calibration: if the curvature attenuation of a batch of samples after 10000 cycles exceeds 5%, automatically increase the 3D shaping temperature by 5℃ and extend the shaping time by 2 seconds to ensure that the product durability meets the standards;

[0082] S12: Use the upper card machine to pull the bottom card up one row of adhesive strips, then stick one row of false eyelashes on the adhesive strips, and remove the appropriate eyelash stems.

[0083] S13: Put the bottom card together with the false eyelashes into the eyelash box, and then coat solid glue on each false eyelash stem part by using a dispensing machine, and finally complete the boxing.

[0084] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application should be included in the protection scope of the present application.

Claims

1. A method of manufacturing a thin sheet of 3D lash styling, characterized by: The specific steps of the manufacturing method of the thin piece eyelash 3D modeling are as follows: S1: substrate selection and cleaning; S2: cutting out eyelash pieces by a laser cutting device; S3: combining two or more eyelash pieces; S4: combining or hot melting the combined eyelash pieces; S5: removing the excess stem part outside the eyelash stem after combining or hot melting; S6: biological safety pretreatment and allergen removal of the eyelash pieces; S7: pipe winding and high temperature shaping; S8: spraying a temperature-sensitive intelligent coating on the false eyelashes by using a precise micro-spraying system; S9: shaping the false eyelashes by a 3D shaping machine; S10: quality screening of the false eyelashes by a multi-spectrum detection system and an AI defect classification model; S11: dynamic fatigue pre-test and parameter calibration of the false eyelashes by a micro fatigue testing machine; S12: pulling and clamping by an upper clamping machine; S13: boxing the eyelashes and dispensing by a dispensing machine.

2. The method of claim 1, wherein the method is a method of manufacturing a thin sheet 3D eyelash molding. The substrate in step S1 is made of PET, PP, PVC or PE plastic material.

3. The method of claim 1, wherein the method is a method of manufacturing a thin sheet 3D eyelash molding. In step S2, the cut false eyelash filaments are integrally formed with the eyelash stems.

4. The method of claim 1, wherein the method is a method of manufacturing a thin sheet 3D eyelash molding. In step S6, the pretreatment method is to detect pollutants and allergens on the false eyelashes, and the allergen removal is a targeted removal process.

5. The method of claim 1, wherein the method is a method of manufacturing a thin sheet of 3D shaped eyelashes. In step S8, the thickness of the sprayed coating is gradiently covered along the length direction of the false eyelashes.

6. The method of claim 1, wherein the method is a method of manufacturing a thin sheet 3D eyelash molding. In step S9, the temperature of the 3D shaping machine is set to 100-180 degrees.

7. The method of claim 1, wherein the method further comprises: applying a thin film of a liquid adhesive to the base of the thin film eyelash 3D form; and applying a thin film of a liquid adhesive to the base of the thin film eyelash 3D form. In step S10, the quality screening is performed by grading screening.

8. The method of claim 1, wherein the method is a method of manufacturing a thin sheet of 3D shaped eyelashes. In step S11, the test method is sampling test.

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