Preparation method of flat-hair false eyelashes

Abstract

The invention discloses a preparation method of flat-hair false eyelashes, and relates to the technical field of false eyelashes, the flat-hair false eyelashes comprise three groups of flat-hair pieces, each group of flat-hair pieces is formed by cutting a substrate through laser, the three groups of flat-hair pieces are divided into a left piece, a middle piece and a right piece, and the left piece, the middle piece and the right piece are combined to form the complete flat-hair false eyelashes. Three groups of flat hair pieces with different orientations are combined, the growth direction of real eyelashes is simulated, the natural sense is enhanced, a flat stem body cut by laser increases the contact area, the fitting degree and the firmness are higher, the eyelashes are lighter and convenient to wear, the wearing comfort is improved, the color difference is detected through a spectrophotometer, technological parameter control is strict, and multi-link quality inspection is strict, so that the eyelashes are more attractive in appearance. The defective rate is effectively reduced, the consistency of finished products is guaranteed, a'production-test-feedback-optimization 'closed loop is formed through collection of consumer feedback, and the product performance and market adaptability are continuously improved.

Description

Technical Field

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

[0002] False eyelashes are a cosmetic product, consisting of artificial eyelashes used to enhance the appearance of the eyes. The eyelashes are arranged in a semi-circular shape, and they help to accentuate the contours of the eyes, adding to their expressiveness.

[0003] Traditional false eyelash bands are designed to be thin and round, resulting in a relatively small contact area and higher pressure resistance, but also poorer fit and a feeling of instability. Furthermore, they feel somewhat heavy when worn, increasing the difficulty of application. The lack of systematic color difference detection and simulated wearing tests in the quality control process leads to poor consistency and insufficient durability of the finished products. Traditional manufacturing processes rely heavily on experience, lacking effective mechanisms for collecting consumer feedback and iterating processes, making it difficult to precisely optimize for practical issues such as wearing comfort and adhesive strip adhesion, thus hindering continuous improvement in product performance. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing flat false eyelashes 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 flat false eyelashes, comprising three sets of flat pieces, each set of flat pieces being cut from a substrate by laser cutting, the three sets of flat pieces being divided into a left piece, a middle piece, and a right piece, the left piece, the middle piece, and the right piece being joined together to form a complete flat false eyelash.

[0006] Preferably, the substrate can be made of plastic materials such as PET, PP, PVC and PE.

[0007] Preferably, the main body of the left eyelash is tilted towards the nose, with the tilt angle controlled at 5-12°, and the right eyelash is tilted towards the temple, with the tilt angle towards the temple being 15-25°.

[0008] The specific steps for preparing this flat false eyelash are as follows:

[0009] S1: Select qualified substrates;

[0010] S2: Cut flat pieces of wool with different orientations using a laser cutting device and then attach high-temperature adhesive strips;

[0011] S3: Tear off the rows of eyelash pieces, and align and stack the flat eyelash pieces facing the three directions in order to combine the eyelashes;

[0012] S4: The stacked flat wool sheets are joined or heat-fused using a joining machine or a hot melt machine;

[0013] S5: Remove excess eyelashes;

[0014] S6: After the flat wool sheet is rolled into a tube, it is placed in a steamer for high-temperature shaping;

[0015] S7: Clear the stems;

[0016] S8: Use a spectrophotometer to check whether the color difference of the finished eyelashes is up to standard;

[0017] S9: Use a clip-on machine to pull and attach clips to the eyelashes;

[0018] S10: Pack the eyelashes into a box and apply glue using a glue dispensing machine;

[0019] S11: Simulated wearing environment test;

[0020] S12: Consumer feedback and process iteration.

[0021] Preferably, in step S2, the shapes of the right, left, and middle pieces of the false eyelashes are drawn using CAD software, and the parameters of the eyelashes are set using the controller of the laser cutting equipment.

[0022] Preferably, in step S2, the power of the laser generator of the laser cutting equipment is controlled at 20W-30W, and the speed is controlled at 50-80mm / s.

[0023] Preferably, in step 3, before joining the hair, each row of flat hairs is combed to prevent the flat hairs from getting tangled together.

[0024] Preferably, in step 3, the stacking order of the three types of flat eyelashes is as follows: the flat eyelashes facing left are placed at the bottom, the middle ones are placed on top of the flat eyelashes facing left, and the flat eyelashes facing right are placed on top of the middle ones. By aligning and stacking two or more complete false eyelashes together, a denser false eyelash can be obtained.

[0025] Preferably, the consumer feedback in step 12 is conducted through a questionnaire in the form of a QR code, with ≥1000 valid responses analyzed monthly.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. In this invention, three sets of flat hair pieces with different orientations are combined to simulate the growth direction of real eyelashes, enhancing the natural look. The laser-cut flat band increases the contact area, disperses pressure, and has a stronger fit and firmness. Combined with the band cleaning process, it reduces the feeling of foreign objects. Moreover, the material used for these eyelashes is lighter than traditional false eyelashes, making them easier to wear and improving wearing comfort. In addition, the thin material itself has a certain degree of flexibility, which can be easily bent to fit different eye shapes and contours, making it more ergonomic.

[0028] 2. In this invention, color difference is detected by spectrophotometer, and adhesion strength and morphological stability are verified by simulating sweat and blinking tests. Strict process parameter control and multi-stage quality inspection effectively reduce the defect rate and ensure the consistency of finished products.

[0029] 3. In this invention, comfort and durability issues are collected through consumer feedback, and process parameters are adjusted accordingly and verified in small batches to form a closed loop of "production-testing-feedback-optimization" to continuously improve product performance and market adaptability. 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 preparing flat false eyelashes shown includes three sets of eyelash pieces, which are divided into a left piece, a middle piece, and a right piece. The left piece, the middle piece, and the right piece are joined together to form a complete flat false eyelash.

[0033] Eyelashes can be made of plastic materials such as PET, PP, PVC and PE.

[0034] The main body of the left eyelash is tilted towards the nose, with the tilt angle controlled at 5-12°, while the right eyelash is tilted towards the temple, with the tilt angle towards the temple being 15-25°.

[0035] The specific steps of the preparation method of this type of flat false eyelashes are as follows:

[0036] S1: Select qualified substrates;

[0037] S2: Cut eyelashes with different orientations using a laser cutting device and then attach high-temperature adhesive strips;

[0038] S3: Tear off the rows of eyelashes, and align and stack the eyelashes facing the three directions in order to combine them;

[0039] S4: The stacked flat wool sheets are joined or heat-fused using a joining machine or a hot melt machine;

[0040] S5: Remove excess eyelashes;

[0041] S6: After the flat wool sheet is rolled into a tube, it is placed in a steamer for high-temperature shaping;

[0042] S7: Clear the stems;

[0043] S8: Use a spectrophotometer to conduct batch sampling inspections to check whether the color difference of the finished eyelashes is up to standard;

[0044] S9: Use a clip-on machine to pull and attach clips to the eyelashes;

[0045] S10: Pack the eyelashes into a box and apply glue using a glue dispensing machine;

[0046] S11: Simulated wearing environment test;

[0047] S13: Consumer feedback and process iteration.

[0048] In step S2, the shapes of the right, left, and middle false eyelashes are drawn using CAD software, and the parameters of the eyelashes are set using the controller of the laser cutting equipment.

[0049] In step S2, the power of the laser generator of the laser cutting equipment is controlled between 20W and 30W.

[0050] In step 3, before merging the lashes, comb each row of lashes to prevent them from tangling together.

[0051] In step 3, the order of stacking the three types of false eyelashes is as follows: place the left-facing eyelashes at the bottom, place the middle eyelashes on top of the left-facing eyelashes, and place the right-facing eyelashes on top of the middle eyelashes. Align and stack two or more complete false eyelashes to combine them, and you will get denser false eyelashes.

[0052] The consumer feedback mentioned in step 12 is conducted through a questionnaire survey in the form of QR codes, with ≥1000 valid responses analyzed monthly.

[0053] Further:

[0054] S1: Select a thin substrate with a thickness of 0.05-0.1mm (the substrate can be plastic materials such as PET, PP, PVC and PE), and then use an optical interferometer to check the flatness of the substrate (flatness error ≤0.01mm / m), and reject deformed or damaged substrates to ensure the qualification of the substrate.

[0055] S2: Before laser cutting, the shape of the eyelashes is drawn in CAD software. The eyelashes are divided into three parts, facing left, facing middle, and facing right (the main body of the left eyelash tends to tilt towards the nose at an angle of 5-12°, while the right eyelash tends to tilt towards the temple at an angle of 15-25° to simulate the dispersion direction of real eyelashes). After drawing, the data is imported into the control system of the laser cutting equipment. Then, the eyelash parameters (such as the length, width, and curvature of the eyelash band, and the length and width of the eyelash tendrils) are adjusted through the control console of the laser cutting equipment. The laser cutting equipment is set according to the thickness of the substrate. The power is 20W-30W, and the speed is controlled at 50-80mm / s to avoid carbonization of the substrate edge due to high-speed cutting. After setting it up, place the substrate on the conveyor belt of the laser cutting equipment, start the laser cutting equipment, and the laser generator cuts rows of flat hair pieces on the substrate. Each row of eyelashes corresponds to a flat hair piece with a certain orientation. Through the flat hair pieces cut by the laser, the flat stem increases the contact area and disperses the pressure. The false eyelashes are lighter and reduce the feeling of foreign objects. The cut substrate is transported by the conveyor belt to the device position of the high-temperature adhesive strip on the other side. The high-temperature adhesive strip device pulls the high-temperature adhesive strip on the position of each row of eyelashes near the eyelash tip.

[0056] S3: The staff removes the baseboard with the high-temperature adhesive strip in place and pulls the strip to separate each row of eyelash pieces from the baseboard. The separated rows of flat pieces are then joined together. When joining, the flat pieces facing left are placed at the bottom, the flat pieces facing middle are placed on top of the flat pieces facing left, and then the flat pieces facing right are placed on top of the flat pieces facing middle. This way, the three types of flat pieces are combined to form a complete false eyelash. Each time a layer is added, the flat pieces are combed and arranged to prevent them from tangling. When a denser eyelash is needed, the stacked complete eyelashes are aligned and stacked with other eyelashes to achieve a denser false eyelash (in actual production, the number of layers for the left, middle, and right pieces is selected according to actual needs).

[0057] S4: Place the combined false eyelashes in a thread-fitting machine or a heat-melting machine for thread-fitting or heat-melting;

[0058] Thread bonding machine: After the hair is bonded, the rows of hair pieces are attached to the conveyor belt of the thread bonding machine in sequence. When the hair pieces are transported to the borrowing position, the thread bonding machine applies glue to the hair pieces near the base, then pulls a thread, and then moves to the drying position to quickly dry the glue, so that the entire row of eyelash bases are bonded together and not easily scattered.

[0059] Hot melt machine: Place the rows of fused eyelashes on the hot melt table of the hot melt machine, and then press down the hot press head to fuse the eyelash roots together. At the same time, it can also melt off the excess roots. Then the staff can remove the eyelashes.

[0060] S5: After the suture is joined, the part outside the eyelash stalk is cut off with a scalpel;

[0061] S6: Lay the flat pieces of wool in a row, and then use a rolling tube to roll the pieces of wool into a curve (the size of the rolling tube determines the curvature of the pieces of wool; choose according to your needs). After rolling the tube, put it into a steamer for high-temperature sterilization and shaping. Set the steamer temperature between 100-110 degrees Celsius and the time between 5-15 minutes (adjust the temperature and time according to the desired effect).

[0062] S7: Remove the band between every two adjacent eyelashes to prevent the eyelash band from becoming too long and causing discomfort to the user when wearing it;

[0063] S8: Use a spectrophotometer to test under a D65 light source. Adjust the target color value to simulate the natural eyelash color of Asians. Check for false eyelashes with excessive color difference. If the false eyelashes have excessive color difference, remove them.

[0064] S9: The card loading machine has two conveyor belts. The card is placed on the innermost conveyor belt, and rows of eyelashes are placed on the outermost conveyor belt. The card is placed on the inner conveyor belt and transported to the card pulling station. Rows of solid glue are applied to the card, and then it is moved to the card loading station. The robotic arm picks up the eyelashes from the outer conveyor belt and then adheres the eyelashes row by row to the solid glue on the card, completing the card loading.

[0065] S10: Attach the inner side of the cardboard to the inner wall of the eyelash box, then place the eyelash box on the glue dispensing machine. The glue dispensing machine applies glue to the base of each false eyelash, and then seals the eyelash box.

[0066] S11: Prepare artificial sweat in advance and heat it. Then, take out the finished eyelashes and immerse them completely in artificial sweat at 37℃ for 8 hours. After taking them out, check the adhesion strength of the root and whether there is obvious discoloration. Then, use an eyelid movement simulator (simulating a blinking frequency of 15 times / min) to fix the eyelashes on the bionic skin test piece and continuously simulate wearing for 8 hours (equivalent to 1 day of actual use). Check whether the eyelash drooping rate, root morphology change and adhesive residue are qualified.

[0067] S12: When printing the cardstock, the QR code for the questionnaire is printed together to facilitate the collection of feedback on wearing comfort (1-10 points), naturalness rating (1-10 points), and durability (number of uses). ≥1000 valid feedbacks are statistically analyzed monthly to identify major problems (such as "adhesive strip adhesion decreases after 3 uses" or "the tip is prone to splitting"). For the feedback issues, the process parameters are adjusted, and a small-batch process verification is conducted. After confirming the effectiveness of the improvements through comparative testing, they are incorporated into the standard process.

[0068] The tools, equipment, algorithms, and QR code technologies used in this application are existing technologies.

[0069] 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 type of flat-haired false eyelashes, characterized in that: It includes three sets of flat hair pieces, each set of which is cut from a substrate by laser. The three sets of flat hair pieces are divided into a left piece, a middle piece, and a right piece. The left piece, the middle piece, and the right piece are joined together to form a complete flat hair false eyelash.

2. The flat-haired false eyelashes according to claim 1, characterized in that: The substrate can be made of plastic materials such as PET, PP, PVC and PE.

3. The flat-haired false eyelashes according to claim 1, characterized in that: The left eyelash strand is tilted towards the nose with an angle controlled between 5-12°, and the right eyelash strand is tilted towards the temple with an angle between 15-25°.

4. A method for preparing flat false eyelashes, characterized in that: The specific steps for preparing this flat false eyelash are as follows: S1: Select qualified substrates; S2: Cut flat pieces of wool with different orientations using a laser cutting device and then attach high-temperature adhesive strips; S3: Tear off the rows of eyelash pieces, and align and stack the flat eyelash pieces facing the three directions in order to combine the eyelashes; S4: The stacked flat wool sheets are joined or heat-fused using a joining machine or a hot melt machine; S5: Remove excess eyelashes; S6: After the flat wool sheet is rolled into a tube, it is placed in a steamer for high-temperature shaping; S7: Clear the stems; S8: Use a spectrophotometer to check whether the color difference of the finished eyelashes is up to standard; S9: Use a clip-on machine to pull and attach clips to the eyelashes; S10: Pack the eyelashes into a box and apply glue using a glue dispensing machine; S11: Simulated wearing environment test; S12: Consumer feedback and process iteration.

5. The method for preparing flat false eyelashes according to claim 4, characterized in that: In step S2, the shapes of the right, left, and middle pieces of the false eyelashes are drawn using CAD software, and the parameters of the eyelashes are set using the controller of the laser cutting equipment.

6. The method for preparing flat false eyelashes according to claim 4, characterized in that: In step S2, the power of the laser generator of the laser cutting equipment is controlled at 20W-30W, and the speed is controlled at 50-80mm / s.

7. The method for preparing flat false eyelashes according to claim 4, characterized in that: In step 3, before joining the hair, each row of flat hairs is combed to prevent the flat hairs from getting tangled together.

8. The method for preparing flat false eyelashes according to claim 4, characterized in that: In step 3, the stacking order of the three types of flat eyelashes is as follows: the flat eyelashes facing left are placed at the bottom, the middle ones are placed on top of the flat eyelashes facing left, and the flat eyelashes facing right are placed on top of the middle ones. By aligning and stacking two or more complete false eyelashes together, a denser false eyelash can be obtained.

9. The method for preparing flat false eyelashes according to claim 4, characterized in that: The consumer feedback in step 12 is obtained through a questionnaire survey in the form of a QR code, with ≥1000 valid responses analyzed monthly.

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