Processing method for hot-press fitting of flower hair false eyelashes

Abstract

The invention discloses a processing method for hot-press fitting of a hairy false eyelash, and relates to the technical field of false eyelashes, the hairy false eyelash is formed by hot-press fitting after at least two layers of hairy pieces made of PET materials are aligned and stacked, the hairy false eyelash is subjected to hot-press fitting by adopting a hot-press fitting machine, manual gluing and fitting links are replaced, the production efficiency is improved, and the production cost is reduced. Labor cost and operation errors are reduced, chemical glue is not needed, the problems of glue pollution and residual stimulation are fundamentally avoided, the material carrying table is provided with a coordinate positioning mark, machine vision auxiliary alignment and accurate positioning during hot pressing are carried out to improve fitting precision, meanwhile, redundant parts on the two sides of a feather piece stem part are cut off through a cutting strip, and the fitting precision is improved. According to the eyelash pedicle, the arc-shaped pedicle parts are formed on the two sides of the pedicle part of the feather piece, friction stimulation to eye skin is reduced, the wearing comfort is improved, the contact area of the flat eyelash pedicle is larger than that of a traditional round pedicle, the wearing stability is enhanced, and the falling-off problem is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of false eyelashes, and in particular to a processing method for hot-pressing and bonding of petal-shaped false eyelashes. BACKGROUND

[0002] Elongated, curved, black, and dynamic eyelashes play an important role in eye type beauty and overall facial beauty. Eyelashes arranged in a semicircular shape can highlight the outline of the eyes and add charm to the eyes.

[0003] In traditional false eyelash manufacturing, petal-shaped false eyelashes are bonded by manual glue application and alignment, which is not only inefficient but also unstable in quality due to individual differences, low material utilization, and high labor costs. Moreover, chemical glue bonding may leave irritating substances and pose safety risks such as eye allergies. In addition, manual bonding has poor precision, which may cause positional deviation and interlayer misalignment, resulting in insufficient structural strength, easy peeling and breaking, and low contour regularity, making it difficult to adapt to different eye types and affecting the makeup beauty and product durability. SUMMARY

[0004] The present application aims to provide a processing method for hot-pressing and bonding of petal-shaped false eyelashes to solve at least any of the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a processing method for hot-pressing and bonding of petal-shaped false eyelashes, comprising hot-pressing and bonding of petal-shaped false eyelashes formed by aligning and stacking at least two petal-shaped pieces made of PET material. Each eyelash stem of each petal-shaped unit is provided with a hot melt layer. The pressing process fuses the eyelash stem area into a whole. Each petal-shaped false eyelash contains 10-20 eyelash filaments.

[0006] Preferably, each petal-shaped piece is integrally formed by laser cutting.

[0007] Preferably, the contour of the petal-shaped false eyelash is a curved structure such as a feather shape, a fan shape, or a petal shape, and the eyelash filaments between the layers are distributed in a staggered manner.

[0008] Preferably, the root width of the false eyelash is 0.1-0.3mm, the overall thickness is ≤0.1mm, and the length of the eyelash filament is 8-12mm.

[0009] The specific steps of the processing method for hot-pressing and bonding of petal-shaped false eyelashes are as follows:

[0010] S1: Check whether the PET sheet is qualified;

[0011] S2: Dry the PET sheet;

[0012] S3: Cut out petal-shaped pieces on the PET sheet and paste high-temperature adhesive strips by using a laser cutting device;

[0013] S4: clean the dust on the fluff sheet;

[0014] S5: install the customized pressing mold on the pressing device in advance;

[0015] S6: align and stack at least two layers of PET material fluff sheets on the coordinate positioning position of the loading table of the pressing device, and use a heat pressing laminating machine or a device working by using high-frequency electromagnetic field energy to heat and press the stem parts of the fluff sheets together;

[0016] S7: cool the false eyelashes after heat pressing;

[0017] S8: process the false eyelashes with a hydrophobic layer;

[0018] S9: check the finished false eyelashes.

[0019] Preferably, in step S5, the pressing plate of the pressing mold corresponding to each fluff sheet is provided with a cutting strip matched with the two sides of the stem part of the fluff sheet, the cutting strip is in an arc shape at the position of the stem part of the fluff sheet, and the loading table of the pressing mold is provided with a cutting groove at a position corresponding to the cutting strip.

[0020] Preferably, in step S6, the surface of the loading table of the pressing device and the pressing surface of the pressing plate are both sprayed with a Teflon coating, the loading table of the pressing device is marked with a coordinate positioning mark of the fluff sheet, and the pressing device is provided with a visual operation table.

[0021] Preferably, in step S7, the false eyelashes are moved to a silica gel pad with a groove, and the false eyelashes are cooled by an axial flow fan.

[0022] Preferably, in step S8, organic silicone modified polyurethane is attached to the surface of the false eyelashes by electrostatic spraying.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. In the present application, the fluff sheet is integrally formed by a laser cutting device, combined with the automatic process of the heat pressing laminating machine, to replace the manual gluing and laminating links, reduce manual intervention, improve material utilization, greatly improve production efficiency, and reduce labor cost and operation error.

[0025] 2. In the present application, the heat pressing lamination process is adopted, the interlayer fusion is realized by a hot melt layer, no chemical glue is needed, the glue pollution and residue irritation problems are avoided from the source, the demand for no chemical pollution is met, and the use safety is improved by passing the biocompatibility test.

[0026] 3. In this invention, the material carrier stage is equipped with coordinate positioning marks and machine vision-assisted alignment, enabling precise positioning during hot pressing and improving bonding accuracy. Simultaneously, the pressure plate cutting strip can remove excess portions from both sides of the eyelash band, forming an arc-shaped band, reducing friction and irritation to the eye area and improving wearing comfort. Furthermore, the flat eyelash band has a larger contact area than traditional round bands, and combined with the firm fusion effect of precise pressing, it significantly enhances wearing stability and reduces the problem of eyelash falling off. Attached Figure Description

[0027] Figure 1 This is a flowchart of the present invention; Detailed Implementation

[0028] 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.

[0029] This invention provides, for example Figure 1 The method for hot-pressing and bonding of false eyelashes with clusters is shown. The false eyelashes are formed by hot-pressing and bonding together at least two layers of PET material cluster sheets that are aligned and stacked. Each cluster unit has a hot-melt layer on the eyelash band. The pressing process fuses the eyelash band area into a whole. Each false eyelash with clusters contains 10-20 eyelash strands.

[0030] Each layer of the feather pieces is integrally formed by laser cutting.

[0031] The outline of false eyelashes is a curved structure such as feather-shaped, fan-shaped or petal-shaped, and the eyelash strands between the layers are distributed in an interlaced manner.

[0032] The width at the base of the false eyelashes is 0.1-0.3mm, the overall thickness is ≤0.1mm, and the length of the eyelash strands is 8-12mm.

[0033] The specific steps of this heat-pressing and bonding process for a type of false eyelashes with multiple tufts are as follows:

[0034] S1: Check if the PET sheet is up to standard;

[0035] S2: Drying process for PET sheets;

[0036] S3: Cut out feather pieces from a PET sheet using a laser cutting device and then attach high-temperature adhesive strips;

[0037] S4: Clean the dust off the feathers;

[0038] S5: Install the customized pressing mold on the pressing equipment in advance;

[0039] S6: Align and stack at least two layers of the petal-shaped pieces of PET material on the coordinate positioning position of the loading table of the pressing equipment, heat and press the stems of the petal-shaped pieces together using a hot pressing laminating machine or a device that works using high-frequency electromagnetic field energy;

[0040] S7: Cool the false eyelashes after hot pressing;

[0041] S8: Process the false eyelashes with a hydrophobic layer;

[0042] S9: Check the finished false eyelashes.

[0043] In step S5, each pressing plate of the pressing mold corresponding to each petal-shaped piece is provided with a cutting strip matching the two sides of the stem of the petal-shaped piece, the cutting strip is arc-shaped at the position of the stem of the petal-shaped piece, and the loading table of the pressing mold is provided with a cutting groove at a position corresponding to the cutting strip.

[0044] In step S5, the surface of the loading table of the pressing equipment and the pressing surface of the heating plate are both sprayed with a Teflon coating, the loading table of the pressing equipment is marked with coordinate positioning marks of the petal-shaped pieces, and the pressing equipment is provided with a visual operation table.

[0045] In step S7, the false eyelashes are moved to a silica gel pad with grooves, and an axial flow fan is used to cool the false eyelashes.

[0046] In step S8, organosilicon modified polyurethane is attached to the surface of the false eyelashes through electrostatic spraying.

[0047] Further:

[0048] The heat-melting layer is heated to realize the interlayer fusion of the fluff piece by using the heat pressing process or the electromagnetic induction heating process, without the traditional chemical glue, so as to avoid the safety risk of the irritating substances of the glue residue to the eyes, meet the demand of no chemical pollution, and pass the biocompatibility test; under the action of the heat-melting layer, the multi-layer fluff piece is fused into a whole in the eyelash stem area, and the high toughness of the PET (the material of the sheet is PET, and PP, PVC and PE materials can also be selected, which can be selected according to the demand) material can significantly improve the structural strength of the false eyelash, reduce the problem of falling off or breaking in use, and the durability is better than that of the traditional glue bonding; the interlayer eyelash filaments are staggered, which can simulate the growth state of the natural eyelashes, so that the whole eyelashes are more dense and lively; the curved profile of the laser cutting such as feather shape and fan shape can be adapted to different eye shapes, and the natural beauty and diversity of the makeup are improved; the root width of the false eyelash is only 0.1-0.3mm, the overall thickness is ≤0.1mm, the eyelash filament length is 8-12mm, the light and thin structure can better fit the eyelid curvature, reduce the foreign body sensation when wearing, and the eyelash filament length can meet the different needs of daily light makeup to exquisite heavy makeup, and the light and thin overall structure and the natural curved profile make the false eyelash more easily fit the eyelid when wearing, adapt to various eye shapes and makeup styles; the excess stem parts on both sides of the eyelash stem part are cut off and form an arc, which can reduce the friction and irritation to the eye skin, improve the wearing comfort, at the same time, the eyelash stem is flat, which can increase the contact area with the eye, and the wearing is more firm; each layer of fluff piece is integrally formed by laser cutting, which can accurately realize the processing of complex curved structures and reduce the error of manual operation, at the same time, the laser cutting technology can improve the material utilization rate and reduce the production cost.

[0049] Further, the specific steps of the processing method of the fluff false eyelash heat pressing are as follows:

[0050] S1: check whether the PET sheet is qualified, and detect the PET sheet thickness (0.05-0.1mm), tensile strength (≥50MPa), temperature resistance (melting point ≥250℃) and surface of the PET sheet, and remove the materials with surface scratches and excessive impurities, to ensure that the base material meets the requirements;

[0051] S2: dry the PET sheet, and dry the qualified base material in a hot air circulation oven for 5min to ensure that the moisture content is qualified;

[0052] S3: Place the PET sheet under the laser generator of the laser cutting equipment, design the shape of the false eyelashes using CAD software, and import the CAD file of eyelash parameters (length, width and curvature of the eyelash band, length and width of the eyelash strands, etc.) into the controller of the laser cutting equipment. The laser cutting device cuts out the corresponding shape of the false eyelash pieces on the PET sheet according to the preset pattern (feather, fan, etc.). After cutting, the PET sheet is moved to the high-temperature adhesive strip pressing station, and a high-temperature adhesive strip is attached to each row of false eyelash pieces. Afterwards, the rows of false eyelash pieces can be removed from the PET sheet by peeling off the high-temperature adhesive strip.

[0053] S4: Clean the cut feather pieces to remove the dust generated by laser cutting. After cleaning, place the feather pieces in a hot air circulating oven to dry for 5 minutes.

[0054] S5: The pressing mold can be customized according to the type of eyelashes and can be changed as needed. The pressing equipment has coordinate positioning positions on the loading platform, which makes it easy for the staff to accurately place the rows of eyelashes in the processing position. The position of the cutting strip corresponds to the two sides of the stem of each eyelash. When the pressure plate presses the eyelashes, the cutting strip will cut off the stems on both sides of the eyelashes. The cutting strip will be inserted into the corresponding groove to avoid affecting the pressing of the eyelashes.

[0055] S6: According to requirements, at least two layers of PET material fluff pieces are aligned and stacked at the coordinate positioning position of the loading platform. Images are acquired by an industrial camera and telecentric lens, and HALCON machine vision algorithm is used to identify the edge feature points of the fluff pieces. Finally, the images are displayed on the screen of the visualization operation table, so that the staff can easily observe whether the false eyelashes are aligned. After placement, they are hot-pressed together using a pressing device. The pressing device (the temperature of the heating plate and the pressure of the pressure plate can be adjusted according to requirements) heating plate parameters are set as follows: temperature 80-120℃, pressure of the pressure plate 0.3-0.8MPa for 60 seconds to ensure that the hot melt layer and the PET fluff pieces are fully melted and the bonding strength is ≥1.5N / flake, so that the fluff pieces are firmly bonded together to form a complete false eyelash.

[0056] At this point, the cutting strip on the pressure plate cuts the sides of each false eyelash band, removing excess bands. The cut bands are rounded, reducing friction and irritation to the eye area compared to traditional bands, thus improving comfort. The flat bands also provide a larger contact area with the eye compared to traditional round bands, resulting in a more secure fit. The surface of the carrier plate and the pressure plate are coated with Teflon to prevent eyelash adhesion.

[0057] Pressing equipment includes hot press laminators or equipment that operates using high-frequency electromagnetic field energy;

[0058] Hot pressing machine: through the heating of hot pressing plate to the tuft, the hot melt layer is melted, and then the stem of the tuft is pressed by the pressing plate of the hot pressing machine;

[0059] The device working on high-frequency electromagnetic field energy: when high-frequency current passes through the induction coil, a rapidly changing high-frequency magnetic field is generated, and the changing magnetic field will induce eddy current in the heating plate, so that the heating plate heats the stem of the tuft, the hot melt layer is melted, and then the pressing plate is pressed;

[0060] S7: immediately transfer to the cooling station after hot pressing, put the false eyelashes into the groove of the silica gel pad, use the axial flow fan to air cool and heat dissipation, quickly reduce the temperature of the tuft, avoid the deformation caused by the internal stress of PET material due to slow cooling, the groove of the silica gel pad limits the false eyelashes, the axial flow fan is obliquely blown at an angle of 45 degrees, and a guide plate is installed at the air outlet to make the airflow flow along the tangent direction of the surface of the tuft (avoiding vertical impact), preventing the false eyelashes from flying;

[0061] S8: use organosilicon modified polyurethane (containing siloxane chain segment), attach organosilicon modified polyurethane to the surface of the false eyelashes through the electrostatic spraying device, use the low surface energy of siloxane to form a hydrophobic layer, which can repel liquid sweat;

[0062] S9: 5% of the finished product of the tuft false eyelashes is sampled, the peel strength, flexibility, hygiene index, biocompatibility and weather resistance of the tuft false eyelashes are detected, and the batch of false eyelashes can be packaged and subsequent processed if the sampling meets the standard.

[0063] The tools, devices and algorithms used in the present application are prior art.

[0064] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A ciliary lash, characterized in that: The said downy false eyelashes are made by hot pressing and bonding of at least two layers of downy pieces made of PET material, each layer of downy unit is provided with a hot melt layer, and the hot pressing process makes the eyelash stem area fused as a whole, each of the said downy false eyelashes contains 10-20 eyelash filaments.

2. The cilium false eyelash according to claim 1, characterized in that: Each layer of the said downy piece is integrally formed by laser cutting.

3. The cilium false eyelash according to claim 1, wherein: The profile of the said downy false eyelashes is a curved structure such as feather-shaped, fan-shaped or petal-shaped, and the eyelash filaments between layers are staggered.

4. The cilium false eyelash according to claim 1, wherein: The root width of the said downy false eyelashes is 0.1-0.3mm, the overall thickness is ≤0.1mm, and the length of the eyelash filaments is 8-12mm.

5. A processing method of ceratophylus false eyelash hot press fitting, characterized in that: The specific steps of the processing method of the said downy false eyelashes hot pressing and bonding are as follows: S1: check whether the PET sheet is qualified; S2: dry the PET sheet; S3: cut out the downy piece on the PET sheet by laser cutting equipment and paste high temperature adhesive tape; S4: clean the dust on the downy piece; S5: install the customized pressing mold in advance on the pressing equipment; S6: align and stack at least two layers of downy pieces made of PET material on the coordinate positioning position of the loading table of the pressing equipment, use a hot pressing bonding machine or a device that works using high frequency electromagnetic field energy to heat and press the stem parts of the downy pieces together; S7: cool the hot pressed false eyelashes; S8: process the false eyelashes with a hydrophobic layer; S9: check the finished false eyelashes.

6. The method of claim 5, wherein the method further comprises the step of: applying a heat and pressure to the base of the cilium to adhere the cilium to the eyelid. In the step S5, the pressing plate of the pressing mold corresponding to each of the said downy pieces is provided with a cutting strip matching the both sides of the stem part of the downy piece, the cutting strip is arc-shaped at the position of the stem part of the downy piece, and the loading table of the pressing mold is provided with a cutting groove corresponding to the cutting strip.

7. The method of claim 5, wherein the method further comprises the step of: applying a heat and pressure to the base of the cilium to adhere the cilium to the base. In the step S6, the surface of the loading table of the pressing equipment and the pressing surface of the pressing plate are both sprayed with a Teflon coating, the loading table of the pressing equipment is marked with the coordinate positioning mark of the downy piece, and the pressing equipment is provided with a visual operation table.

8. The method of claim 5, wherein the method further comprises the step of: applying a heat and pressure to the base of the cilium to adhere the cilium to the eyelid. In the step S7, the false eyelashes are moved to a silica gel pad with grooves, and the false eyelashes are cooled by an axial flow fan.

9. The method of claim 5, wherein the method further comprises the step of: applying a heat and pressure to the base of the cilium to adhere the cilium to the eyelid. In the step S8, organic silicone modified polyurethane is used to adhere to the surface of the false eyelashes by electrostatic spraying.

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