Method for manufacturing artificial eyelashes

Abstract

The method for manufacturing artificial eyelashes of the present invention includes the following steps: forming cutting lines corresponding to the artificial eyelashes on a plastic film having a certain thickness using a laser cutting machine; and depositing the plastic film with the cutting lines formed thereon into a cutting solution contained in a cutting container to form the artificial eyelashes; in the step of forming the artificial eyelashes, the end of the plastic film corresponding to the tip of the artificial eyelashes is deposited in the cutting solution for a relatively long time, so as to sharply form the tip of the artificial eyelashes.

Description

Technical Field

[0001] The present invention discloses artificial eyelashes, and in particular, discloses a method for manufacturing artificial eyelashes. Background Art

[0002] Generally speaking, artificial eyelashes refer to eyelashes made from artificial hair or human hair and used to replace eyelashes or stick on them.

[0003] The following briefly describes a conventional method for manufacturing artificial eyelashes. The process involves the following steps: (a) first, the artificial eyelashes are designed; (b) artificial hair or human hair is attached according to the designed design and glue is applied; (c) the glued artificial eyelashes are dried, and the unwanted portions are cut off; (d) the artificial eyelashes are rolled with a rod to form the shape; and (e) the completed artificial eyelashes are attached to a tray and packaged.

[0004] During the design phase, although the product is 3D, the process of manufacturing the product is prone to human error and deviations caused by unskilled workers, so the work tends to be mainly done by skilled workers. However, the problem is that the number of skilled workers will gradually decrease over time. In addition, the attachment and gluing steps require skilled workers to check the design while working. Figure 1 The raw yarn is attached along the lines of the design. Furthermore, the cutting step follows the gluing process, cutting along the reference lines. The winding step transforms the 2D product into a 3D product. Depending on the diameter of the aluminum curl required by the customer, curls are divided into J, JC, C, and D shapes. The curls are then wound onto the rods and heated in a chamber at 100-150°C. The finished coils are sorted, attached to the customer's desired pallet, and packaged.

[0005] However, this existing artificial eyelash manufacturing method cannot verify the actual product based solely on a design drawing, requiring skilled personnel to perform post-production adjustments and other tasks. Furthermore, the raw yarn used in the attachment process is packaged in multiple bundles, making it difficult to control. Specifically, the raw yarn is lightweight and thin, and its shape varies depending on the number of hairs, requiring considerable time to work with. Furthermore, a pair of eyelashes typically requires approximately 150 to 200 bundles of yarn, and the salary required for accurate processing is disproportionate to the effort required, leading to a reluctance to engage in this work.

[0006] As described above, in order to manufacture artificial eyelashes, skilled workers are required for the operation. The artificial eyelashes are formed in a multi-layer (laminated) form. In order to accurately laminate them, the workers engaged in the attachment process need to have a high level of understanding of the product (attachment takes into account the errors of the production workers). When the product is produced by unskilled workers, it takes a lot of time. Moreover, when applying glue, the semi-finished product after lamination needs to be placed on a jig and the bottom line installed before applying the glue. At this time, air bubbles in the glue and the tension of the bottom line can cause product defects.

[0007] Therefore, it is necessary to automate part or all of the manufacturing process in order to shorten the manufacturing process and manufacturing time of artificial eyelashes. Summary of the Invention

[0008] The present invention relates to a method for manufacturing artificial eyelashes. In order to automate the manufacturing process of artificial eyelashes, a laser cutting machine is used to form cutting lines (cracks or scratches) on a raw material film, and then processing can be carried out using a cutting solution.

[0009] The method for manufacturing artificial eyelashes according to the present invention to solve the above problems includes the following steps: using a laser cutting machine to form cutting lines corresponding to artificial eyelashes on a plastic film with a certain thickness; and depositing the plastic film with the cutting lines formed thereon into a cutting solution contained in a cutting container to form the artificial eyelashes; in the step of forming the artificial eyelashes, the end of the plastic film corresponding to the tip of the artificial eyelashes is deposited in the cutting solution for a relatively long time, so as to sharply form the tip of the artificial eyelashes.

[0010] The plastic film is a film formed by mixing terephthalic acid, dicarboxylic acid, ethylene glycol, propylene glycol, a flame retardant, a hydrolysis agent, and an antioxidant.

[0011] The cutting solution is one of a sodium hydroxide solution, a calcium hydroxide solution, or a potassium hydroxide solution.

[0012] In the step of forming the cutting lines, the width of the cutting lines is 0.1 [mm] or more and 0.2 [mm] or less.

[0013] In the step of forming the artificial eyelashes, the concentration of the cutting solution is 25 [%] or more and 40 [%] or less.

[0014] In the step of forming the artificial eyelashes, the temperature of the cutting solution is 70 [°C] or more and 90 [°C] or less.

[0015] In the step of forming the artificial eyelashes, the deposition time of the plastic film in the cutting solution is 5 [hours] or more and 40 [hours] or less.

[0016] According to the present invention, the plastic film formed with cutting lines (cracks or scratches) is precipitated into a cutting solution contained in a cutting container, so that the tip of the artificial eyelash is sharply formed, thereby enabling the production of artificial eyelashes with a sharp tip portion. At this time, the cutting thickness of the tip portion of the artificial eyelash manufactured by the present invention can be sharpened to 0.01 mm.

[0017] In addition, according to the present invention, it is possible to produce uniform products at any time using manufacturing equipment without relying on skilled workers. Therefore, problems with product quality can be significantly reduced due to reasons for defective products, and mass production of multiple varieties in small quantities can be achieved.

[0018] In addition, when manufacturing semi-finished eyelashes, it is easy to have underproduction or overproduction due to individual differences in ability, and inventory management is difficult. Therefore, more operations need to be carried out in excess of the actual order quantity. The present invention uses equipment manufacturing, can produce the same product under the same conditions at any time, does not require excessive manufacturing of semi-finished product inventory, and can also carry out mass production of multiple varieties in small quantities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a flowchart for explaining the method for manufacturing artificial eyelashes of the present invention.

[0020] Figure 2 It is a reference diagram showing the state of forming actual cutting lines on a plastic film using a laser cutting machine.

[0021] Figure 3 It is an enlarged three-dimensional view of the cutting lines formed on the plastic film by a laser cutting machine.

[0022] Figure 4 It is a reference diagram showing a cutting container.

[0023] Figure 5a It shows for insertion Figure 4 A reference diagram of a through-hole formed in a plastic film for a support rod of the shown cutting container.

[0024] Figure 5b It is a reference diagram showing the state where the support rod of the cutting container is inserted into the through-hole formed in the plastic film.

[0025] Figure 6 It is a reference diagram graphically showing the appropriate concentration, temperature, and precipitation time of the cutting solution for precipitating the plastic film.

[0026] Figure 7 It is a reference diagram comparing the artificial eyelashes formed after precipitation in the cutting solution and the original yarn for natural eyelashes at 250 times magnification. DETAILED DESCRIPTION OF THE INVENTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Embodiments of the present invention are provided to more fully illustrate the present invention to those skilled in the art, and the following embodiments can be deformed into various other forms, and the scope of the present invention is not limited thereto. Instead, the described embodiments are provided to make the present disclosure more substantial and complete, and to fully convey the idea of the present invention to those skilled in the art.

[0029] The terms used herein are for describing specific embodiments and are not intended to limit the present invention. As used herein, unless the context clearly indicates otherwise, the singular form may include the plural form. As used herein, the term "and / or" includes any one and all combinations of one or more of the listed items.

[0030] Figure 1 It is a flowchart for explaining a method for manufacturing artificial eyelashes of the present invention.

[0031] First, a cutting line corresponding to artificial eyelashes is formed on a plastic film having a certain thickness by a laser cutting machine (step S100). At this time, the width of the cutting line formed by the step of forming the cutting line is 0.1 [mm] or more and 0.2 [mm] or less.

[0032] The plastic film is a sheet material and is a film formed by mixing terephthalic acid, dicarboxylic acid, ethylene glycol, propylene glycol, a flame retardant, a hydrolysis agent, and an antioxidant.

[0033] At this time, the component ratio of each component may be 50 to 70% by weight of terephthalic acid, 5 to 30% by weight of ethylene glycol, 5 to 10% by weight of propylene glycol, 3 to 10% by weight of the hydrolysis agent, 2 to 5% by weight of dicarboxylic acid, 0.5 to 1% by weight of the antioxidant, and 0.1 to 3% by weight of the flame retardant.

[0034] According to the component ratio of the present invention, that is, compared with the prior art, the present invention reduces the proportion of terephthalic acid and increases the proportion of ethylene glycol and propylene glycol. At the same time, the component ratio of the antioxidant is reduced by more than twice compared with the prior art, so that the laser cutting machine can easily form cracks or scratches on the plastic film.

[0035] In addition, the plastic film according to the component ratio of the present invention can cause corrosion more effectively than a general plastic film in the following-described cutting solution, and a sharp shape can be obtained at the tip portion of the artificial eyelashes.

[0036] In addition, the artificial eyelashes made of the plastic film based on the component ratio of the present invention can significantly delay the oxidation rate caused by ultraviolet rays although the component ratio of the antioxidant is greatly reduced.

[0037] As a device for forming a cutting line on a plastic film, a laser cutting machine or a laser marking machine is used. The types of the laser cutting machine use optical fiber, carbon dioxide, and ultraviolet lasers.

[0038] Figure 2 FIG. is a reference diagram showing a state where an actual cutting line is formed on a plastic film by a laser cutting machine. Figure 3 FIG. is an enlarged three-dimensional view of a cutting line formed on a plastic film by a laser cutting machine.

[0039] The suitable thickness of the plastic film is 0.05 to 0.1 mm. In order to prevent product deformation that may occur during laser cutting of the plastic film, cutting can be performed by attaching (laminating) a release agent (with an adhesion force of 10 to 500 g) to the plastic film.

[0040] The minimum cutting size (lash thickness) of laser cutting can reach 0.1 mm. The advantage of laser cutting is that it can accurately cut according to a design drawing (made using Auto CAD or Illustrator, etc.). However, the heat generated during laser cutting poses a risk of burning the material (plastic film) when the lash thickness is less than 0.1 mm. Therefore, during the first cutting using a laser cutting machine, it is almost impossible to cut with a lash thickness of less than 0.1 mm.

[0041] That is, when cutting an ultra-thin film with a plastic film thickness of 0.05 to 0.1 mm, it is necessary to operate by increasing the laser speed (800 to 1500 mm / s) and cutting repeatedly to achieve it. If the speed is slow or the laser power is too high, the plastic film will be burned and cannot be used as a product. Moreover, during laser cutting, if cutting is repeated many times, the equipment will have errors. The heat energy generated when the laser beam passes through for cutting poses a risk of burning the material (plastic film) when the lash thickness is less than 0.1 mm. It is almost impossible to perform the first cutting with a thickness of less than 0.1 mm.

[0042] Therefore, although there are many types of currently manufactured artificial lash thicknesses, such as 0.03 mm to 0.2 mm, the thickness of products manufactured only by laser cutting is 0.1 to 0.2 mm, accounting for only about 10 to 20%. Therefore, manufacturing relying on laser equipment is limited.

[0043] Moreover, products with the lash tip gradually narrowing (sharp) account for more than 90%. Therefore, there are limitations in manufacturing lashes only by laser cutting. Therefore, as described in the present invention, a micro-cutting process is performed using the product width of the target size and the laser beam size.

[0044] The size of the appropriate laser beam is 0.1 - 0.005 mm. By utilizing the laser characteristics, it accurately passes through the designed position, but it cannot be cut in just one pass. This phenomenon can be used to form a cutting line. Therefore, a cutting line equivalent to a crack or scratch will be formed in the area where the laser beam passes.

[0045] After step S100, the plastic film with the cutting line formed is immersed in the cutting solution contained in the cutting container to form artificial eyelashes (step S200). At this time, the cutting solution is one of sodium hydroxide solution, calcium hydroxide solution, or potassium hydroxide solution.

[0046] The cutting container is a box that holds the cutting solution.

[0047] Figure 4 It is a reference diagram showing the cutting container.

[0048] Refer to Figure 4 , the cutting container is in the form of a straight hexahedron box (C) with an open top, but this is only an example, and it can be deformed into any form that can hold the cutting solution. Moreover, in the cutting container, two or more support rods (P) that can hold the plastic film can be arranged side by side horizontally inside the cutting container. Such support rods (P) can be configured to be detachable from the cutting container.

[0049] The plastic film is formed with through-holes (H) into which the support rods (P) can be inserted. The support rods are inserted through these through-holes to be arranged inside the cutting container.

[0050] Figure 5a Insert Figure 4 Among the support rods of the cutting container shown, in order to stack the semi-finished products obtained by cutting into multiple layers during product manufacturing to form the product shape.

[0051] This through-hole (H) serves as a guiding function during stacking, so that unskilled workers can be naturally aligned with the support rods (P) without being affected by the understanding of the product. Therefore, the through-hole (H) can be used as a basic alignment reference from the product design step.

[0052] It is a reference diagram showing the through-hole (H) formed in the plastic film, Figure 5b It is a reference diagram showing the state where the support rods of the cutting container are inserted into the through-hole (H) formed in the plastic film.

[0053] The step of forming artificial eyelashes allows the end of the plastic film corresponding to the tip of the artificial eyelashes to be immersed in the cutting solution for a relatively long time, so as to sharply form the tip of the artificial eyelashes.

[0054] Figure 6 It is a reference diagram graphically showing the appropriate concentration, temperature, and precipitation time of the cutting solution for immersing the plastic film.

[0055] Referring to Figure 6 , the appropriate concentration of the cutting solution for forming artificial eyelashes can be 25 [%] or more and 40 [%] or less. In addition, the appropriate temperature of the cutting solution for forming artificial eyelashes can be 70 [°C] or more and 90 [°C] or less. In addition, in order to form artificial eyelashes, the precipitation time of the plastic film in the cutting solution can be 5 [hours] or more and 40 [hours] or less.

[0056] After placing the plastic film in the cutting solution on a support rod for precipitation purposes, precipitate the cutting solution into the cutting solution, and then adjust the height of the cutting solution. When adjusting the height, the cutting solution can be naturally discharged, or the position of the support rod in the cutting container can also be moved upward to adjust the precipitation time of the plastic film. Therefore, by using the grinding time difference caused by the cutting solution, the grinding time of the base part of the product is shortened, while the grinding time of the tip part is extended, thereby forming a sharp shape. After the grinding treatment, the product is cleaned to form the final product.

[0057] When the part with the cutting line is precipitated in a strongly alkaline cutting solution with a concentration of 25 [%] or more and 40 [%] or less at a temperature of about 80 [°C] for 20 [minutes], the cutting line (crack or scratch) formed by the laser beam of the laser cutting machine will be corroded first and cut into the shape of the corresponding cutting line.

[0058] After that, in order to form the tip part of the artificial eyelashes sharply, it is continued to be precipitated in the cutting solution. For the concentration and temperature of the aforementioned cutting solution and the precipitation time of the plastic film, after considering the experimental result values of the product oxidation degree, the values that meet the production efficiency and the possibility of developing into product defects, it can be set to a concentration of 25 - 40 [%], a temperature of 80 [°C], and 5 [hours] or more and 40 [hours] or less.

[0059] The reason for taking fine production for the end treatment of artificial eyelashes is that the tip of the eyelashes needs to be sharp so that consumers can be more natural after attachment and the product itself looks better. Therefore, it is necessary to immerse the plastic film with the cutting line in the cutting solution to make the end sharp (acute).

[0060] Figure 7 It is a reference diagram comparing the original yarns used for artificial eyelashes and natural eyelashes after being magnified 250 times after being precipitated in the cutting solution. Referring to Figure 7 , although the existing eyelashes have a sharp tip, they have the disadvantage of uneven length. The tip part of the artificial eyelashes manufactured according to the present invention is sharp, and the length from the bottom to the tip part is uniform.

[0061] As described above, the technical concept of the bioadsorbent manufacturing apparatus of the present invention has been described with reference to the accompanying drawings. However, it is merely an illustrative description of the best embodiment of the present invention and does not limit the present invention.

[0062] Therefore, the present invention is not limited to the above specific preferred embodiments, and those skilled in the art can implement various modifications without departing from the gist of the present invention claimed in the claims, and these modifications all fall within the protection scope described in the claims of the present invention.

[0063] Industrial Use

[0064] The present invention can be applied to the field of manufacturing artificial eyelashes.

Claims

1. A method for manufacturing artificial eyelashes, characterized in that, It includes the following steps: Using a laser cutting machine to form cutting lines corresponding to the artificial eyelashes on a plastic film with a certain thickness; and, Precipitating the plastic film with the cutting lines formed thereon into a cutting solution contained in a cutting container, so as to form the artificial eyelashes in the area surrounded by the cutting lines; In the step of forming the artificial eyelashes, the end of the plastic film corresponding to the tip of the artificial eyelashes is precipitated in the cutting solution for a relatively long time, so as to sharply form the tip of the artificial eyelashes.

2. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, The plastic film is a film formed by mixing terephthalic acid, dicarboxylic acid, ethylene glycol, propylene glycol, a flame retardant, a hydrolysis agent and an antioxidant.

3. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, The cutting solution is one of sodium hydroxide solution, calcium hydroxide solution or potassium hydroxide solution.

4. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, In the step of forming the cutting lines, The width of the cutting lines is 0.1 [mm] or more and 0.2 [mm] or less.

5. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, In the step of forming the artificial eyelashes, The concentration of the cutting solution is 25 [%] or more and 40 [%] or less.

6. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, In the step of forming the artificial eyelashes, The temperature of the cutting solution is 70 [°C] or more and 90 [°C] or less.

7. The method for manufacturing artificial eyelashes according to claim 1, characterized in that, In the step of forming the artificial eyelashes, the precipitation time of the plastic film in the cutting solution is 5 [hours] or more and 40 [hours] or less.

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