Preparation method of false eyelashes with split eyelash stems

Abstract

The invention discloses a preparation method of false eyelashes with split eyelash stems, and relates to the technical field of beauty makeup, and the preparation method comprises the following steps: S1, screening a base material; s2, pretreating the base material; s3, cutting the base material by laser; s4, pulling the high-temperature adhesive tape and tearing the film; s5, the stem body is subjected to 3D printing; s6, stem body cooling; s7, printing quality detection; s8, processing post-treatment is carried out; s9, waste treatment; the stem body is independently prepared through split type design and 3D printing, the supporting performance of the stem body is greatly improved, and the service life of a product is prolonged. Meanwhile, adaptive base materials are strictly screened to be matched with laser precise cutting, and it is guaranteed that the false eyelashes are regular in shape; the wearing fitting degree is improved through visual positioning and the radians of the peduncle bodies, and the allergy risk is reduced through a medical-grade non-sensitization base material. Waste is reduced through waste classification and recovery, product stability is guaranteed through detection such as artificial sweat soaking and aging tests, and false eyelash quality and use experience are comprehensively optimized.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and in particular to a method for preparing false eyelashes with a split eyelash band. Background Technology

[0002] Long, curved, dark, and vibrant eyelashes play a crucial role in the beauty of the eyes and even the overall appearance. Eyelashes are arranged in a semi-circular shape, enhancing the contours of the eyes and adding to their expressiveness. False eyelashes are a type of eye cosmetic, typically used to increase the density or length of natural eyelashes for a decorative effect.

[0003] Increasingly, existing technologies utilize laser-cut false eyelashes, which offer better overall integrity. However, the cut eyelashes and lash bands are of the same thickness, resulting in a thinner, more flexible lash band with poor support. This makes the false eyelashes prone to bending and damage, leading to a shorter lifespan. Furthermore, the manufacturing process for false eyelashes in current technologies is relatively simple, sometimes involving only a single, basic step, and is not sufficiently refined. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing false eyelashes with a split eyelash band, so as to solve at least any of the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing false eyelashes with a split eyelash band, the specific steps of which are as follows: S1: Substrate selection; S2: Substrate pretreatment; S3: Laser-cut substrate; S4: Pull the high-temperature adhesive strip to peel off the film; S5: 3D printed stem; S6: Stoma cooling; S7: Print quality inspection; S8: Post-processing; S9: Waste disposal.

[0006] Preferably, in step S1, the substrate includes a thin plate for making false eyelashes and a filamentous striation.

[0007] Preferably, in step S3, the laser cutting is performed using a false eyelash laser cutting device.

[0008] Preferably, in step S4, a high-temperature tape pulling machine for false eyelashes is used to pull the high-temperature tape.

[0009] Preferably, in step S5, a 3D printer is used to print the base of the false eyelashes.

[0010] Preferably, in step S7, multiple tests are performed by random sampling.

[0011] Preferably, in step S9, during waste treatment, the thin plates and filamentous stems are collected separately and crushed.

[0012] The beneficial effects of this invention are as follows: In this invention, the band is independently fabricated using 3D printing, creating a thickness difference between the band and the eyelash piece. This significantly improves the band's support, effectively preventing bending and damage during wear and storage, and substantially extending the product's lifespan. Simultaneously, precise laser cutting ensures the false eyelashes maintain a regular shape and consistent quality, resolving the challenge of balancing morphological integrity and structural strength in one-piece cutting processes.

[0013] In this invention, a curved instep is 3D printed to perfectly match the contours of the eye, improving fit and comfort. Medical-grade, hypoallergenic substrate is used to reduce the risk of eye allergies. The manufacturing process employs multi-head adhesive strips to improve production efficiency. Thin sheets and instep waste are sorted, recycled, and reused, reducing material waste and enhancing environmental friendliness. Furthermore, multiple quality tests, including artificial sweat immersion and aging tests, ensure product durability and stability, further optimizing and perfecting the overall processing steps. Attached Figure Description

[0014] Figure 1 This is a flowchart of the present invention; Figure 2 A schematic diagram showing the cutting of an eyelash shape onto the substrate of this invention and the application of a high-temperature adhesive strip; Figure 3 This is a schematic diagram of the 3D printed stem of the present invention; Figure 4 This is a schematic diagram of the curvature of the stroma in this invention. Detailed Implementation

[0015] 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.

[0016] This invention provides, for example Figure 1-4 The method for preparing a split-type false eyelash with a separate eyelash band, as shown, includes the following steps: S1: Substrate selection; S2: Substrate pretreatment; S3: Laser-cut substrate; S4: Pull the high-temperature adhesive strip to peel off the film; S5: 3D printed stem; S6: Stoma cooling; S7: Print quality inspection; S8: Post-processing; S9: Waste disposal.

[0017] In step S1, the substrate includes a thin plate for making false eyelashes and a filamentous striation.

[0018] In step S3, the laser trimming is performed using a false eyelash laser trimming device.

[0019] In step S4, a high-temperature tape pulling machine for false eyelashes is used to pull high-temperature tape.

[0020] In step S5, a 3D printer is used to print the base of the false eyelashes.

[0021] In step S7, multiple tests are performed using a random sampling method.

[0022] In step S9, during waste processing, the thin plates and filamentous stems are collected separately and crushed.

[0023] Further S1: The thin sheet material for false eyelashes is made of PET and PBT, which has the characteristics of strong flexibility, not easy to deform, and uniform color. It is suitable for laser cutting and 3D printing bonding, or some composite structures, such as chemical fiber + natural fiber, to balance hardness and softness and improve durability.

[0024] Selection criteria: The thickness of the base material is controlled between 0.05-0.1mm, with a deviation of no more than ±0.01mm, to avoid uneven eyelash lengths after cutting; the base material should not have creases or breakage after being bent 180°, to ensure a close fit to the eye contour when worn; the color should be consistent to avoid product appearance defects. The stem can be made of medical-grade TPU (thermoplastic elastomer), PETG (polyethylene terephthalate), Resin (photosensitive resin), and PEEK (polyetheretherketone), making it compatible with most thin sheets. It is virtually hypoallergenic and highly safe. Other materials can also be selected according to requirements. The stem material is made into filaments (the specifications of the stem need to be compatible with the specifications required by the subsequent printer). The filaments are then wound up using a take-up roller. The process of making the stem into filaments is a mature existing technology and will not be explained in detail here.

[0025] Screening criteria: Using a laser diameter gauge, a point is measured every 10cm of the filament. The diameter deviation of the filament is ≤±0.03mm (1.75mm specification), and the roundness error is ≤0.05mm. Machine vision inspection shows that there are no defects such as bubbles, scratches, or dents on the surface of the filament. Trial printing with a 3D printer shows that there is no clogging or filament breakage after 1 hour of continuous printing. The printed lines are uniform and burr-free, and there is no peeling from the thin plate.

[0026] S2: After screening, both the thin plates and stems need to be placed in the cleaning tank of an ultrasonic cleaner for cleaning for 5-8 minutes. Remove surface impurities. After cleaning, the substrate can be placed in a drying oven for drying or air drying.

[0027] S3: Using laser cutting equipment, thin plates are stacked and placed in the feeding box. The plates are then securely loaded by a pressure rod. The suction seat works in conjunction with the electric slide rail to pick up individual plates and move them to the main body to be processed. The laser cutting equipment is then started (the processing parameters for the false eyelashes are pre-input into the control board of the laser cutting equipment to cut the corresponding false eyelash shape). The plates are precisely cut to form a cone shape for the false eyelashes, i.e., rows of spaced eyelash pieces (this processing technology is existing technology; for details, please refer to our company's patent application number: 202510360295.1, which will not be elaborated here).

[0028] S4: After cutting, remove the thin sheet and place it on the conveyor of the high-temperature tape machine. A multi-head high-temperature tape machine can be selected, which can pull multiple high-temperature tape strips at once. Adjust the position of the head to the desired distance. The high-temperature tape should be applied to the center of the eyelash surface, and its length should be longer than the length of each row of eyelashes to ensure each row is properly attached. The conveyor will move the thin sheet under the head, which will then attach the high-temperature tape to the eyelashes. This step can also be done manually. Manually operated high-temperature tape machines also have multiple heads and can pull out multiple high-temperature tape strips simultaneously. After the high-temperature tape is attached, wait 5-10 minutes for it to firmly adhere. Then, lift one end of the high-temperature tape and slowly peel it off the thin sheet. The tape will peel off along with the eyelashes, forming semi-finished false eyelashes.

[0029] S5: Mark a positioning line on the 3D printing table in advance, place rows of false eyelashes on the positioning line. The placement of the false eyelashes should not exceed the length of the positioning line (place the position near the root of the false eyelashes on the positioning line). Before printing, open the wire feeding bin door of the 3D printer, clean the dust or residual wire debris at the roller of the wire feeder and the interface of the wire guiding tube, ensure that the wire feeding channel is unobstructed, take out the filament stem roll, fix the core on the bracket of the wire feeding bin, ensure that the filament stem can rotate freely without entanglement, manually push the filament stem to make it pass through the wire guiding tube (inner diameter 3 - 5mm, bending radius ≥ 50mm, avoid excessive bending), until the end of the filament stem extends about 5mm out of the print head nozzle, and calibrate the wire feeding tension. It should be noted here that by replacing print head nozzles of different sizes, the size of the stem after printing can be changed, and it can be selected according to requirements.

[0030] Before printing, input the corresponding printing parameters (such as the thickness, width and curvature of the printed stem, etc.) into the control system of the printer. During printing, the visual positioning device on the print head (it is prior art to set a visual positioning device on the print head or on the fixing part connected to the print head, and will not be elaborated here too much). The visual positioning camera identifies and locates the positioning line on the printing table, and calibrates the position of the print head (in addition, the printing path can also be drawn in the drawing software first, and then the file is input into the printer control system, and the print head moves along the pre-set route, and the visual positioning camera is used as an auxiliary calibration and positioning). After calibration, the position of the print head nozzle is exactly on the same horizontal line as the positioning line. The printer prints the stem on the false eyelashes to form an eyelash stem that protrudes from the false eyelash itself. The side arc of the stem in contact with the eye is printed with a curvature, making it more fitting to the eye contour when worn (the curvature of the stem of one false eyelash is consistent, meaning that the curvature of the stem of a complete false eyelash is a complete arc, such as Figure 4 the curvature of the stem shown). Compared with the false eyelashes cut out integrally, the printed stem is thicker, has a greater thickness and better support.

[0031] S6: After printing, use a cooling fan to perform air cooling on the false eyelashes for 3 - 5 minutes to immediately cool the stem, and then let it cool naturally for 3 - 5 minutes; ensure that the stem is completely cooled and solidified.

[0032] S7: Randomly select 3% of the semi-finished false eyelashes, then divide the selected false eyelashes into two equal parts, and prepare artificial sweat. Pour the artificial sweat into the soaking tank, put half of the randomly selected false eyelashes (3% of the total) into the soaking tank for 24 hours. The wire stem should not soften or fall off to be qualified. Long-term stability test: Put the stem into an aging box (temperature 40°C, ultraviolet irradiation intensity 0.5mW / cm²), age for 50 hours, and no cracking or discoloration is qualified.

[0033] S8: Conduct an appearance inspection on the cut false eyelashes to select defective products with broken hairs, missing hairs, or deformed stems. Place the qualified false eyelashes into an ultraviolet disinfection box for 5-10 minutes for disinfection. After disinfection, collect the false eyelashes and wait for the subsequent shaping process.

[0034] S9: Sorting and recycling thin sheet waste and filamentous stem material scraps. After recycling, soak these two types of waste in a degumming agent for 10-20 minutes to remove the glue adhering to their surfaces. Both types of waste can be crushed by a crusher and then processed again as raw materials to make new thin sheets and filamentous stems, which greatly reduces material waste.

[0035] Furthermore, all processing equipment used in this application is existing technology, and those skilled in the art are familiar with the working principles of each piece of equipment. At the same time, those skilled in the art know that corresponding parameter adjustments should be made according to actual production needs.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1.A method for manufacturing split body false eyelash, comprising the following steps: S1: screening of base material; S2: pretreatment of base material; S3: laser cutting of base material; S4: pulling high-temperature adhesive tape and tearing film; S5: 3D printing of stem body; S6: cooling of stem body; S7: quality detection of printing; S8: post-processing; and S9: waste treatment. In the step S1, the base material includes a thin plate and a filamentous stem body for manufacturing false eyelashes. In the step S3, the laser cutting uses a false eyelash laser cutting device. In the step S4, the high-temperature adhesive tape is pulled using a false eyelash high-temperature adhesive tape pulling machine. In the step S5, the stem body is printed at the root of the false eyelash using a 3D printer. In the step S7, a plurality of detections are performed in a random sampling manner. In the step S9, the thin plate and the filamentous stem body are collected separately and subjected to crushing treatment during the waste treatment. ​ ​ ​ 2. The method of claim 1, wherein the method further comprises: ​ ​ 3. The method of claim 1, wherein the method further comprises: providing a plurality of the first and second body parts; and providing a plurality of the first and second body parts with the first and second body parts being connected to each other. ​ 4. The method of claim 1, wherein the method further comprises: providing a plurality of the first and second body parts; and providing a plurality of the first and second body parts with the first and second body parts being connected to each other. ​ 5. The method of claim 1, wherein the method further comprises: providing a plurality of the first and second body parts; and providing a plurality of the first and second body parts with a plurality of the first and second body parts having a different length. ​ 6. The method of claim 1, wherein the method further comprises: ​ ​ 7. The method for preparing a split-type false eyelash with a separate eyelash band according to claim 1, characterized in that: ​

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