Preparation method of glue-free cosmetic brush
The glue-free makeup brush design with a single PBT plastic and snap-on or threaded structure is solved, and the advantages of environmental protection, economical and degradation are achieved.
Patent Information
- Application Number
- CN202411602187.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2024-12-27
AI Technical Summary
Existing cosmetic brushes need to be disassembled and removed during recycling, which has environmental protection and cost problems, and the organic ingredients in the glue may be harmful to human health.
The components of the makeup brush are made using a single PBT plastic and assembled through snap or threaded structures to avoid the use of glue and use ultrasonic waves to fix the bristles, simplifying the recycling process.
It realizes environmentally friendly recycling of makeup brushes, reduces resource and energy consumption, reduces production costs, and supports natural degradation under certain environments.
Smart Images
Figure CN119189108A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cosmetic brush preparation, and in particular to a method for preparing a glue-free cosmetic brush. Background Art
[0002] There are many types of makeup brushes among makeup tools, which can be combined according to personal makeup habits. At present, makeup brushes mainly consist of three parts: bristles, brush tubes, and brush handles. The bristles on the market are mainly made of fiber hair, the tubes are mainly aluminum tubes, and the handles are mainly PS or ABS plastic handles. The three parts are fixed with glue. The bristles, tubes and handles are made of different materials, and they need to be specially classified for recycling after use. In addition, glue is a chemical, which brings great inconvenience to the recycling of finished products. The organic components in the glue may contain formaldehyde and benzene, which can cause harm to the human body and may affect other aspects such as the respiratory tract and skin, which is not environmentally friendly. Summary of the invention
[0003] The purpose of the present application is to provide a method for preparing a glue-free makeup brush. This preparation method uses a single plastic to make various components of the makeup brush, and assembles the components by means of snaps or threads. No glue is required for bonding, and the entire production process does not produce harmful substances. There is no need to disassemble and remove glue during recycling. This method has the advantages of being environmentally friendly, simplifying recycling steps, and reducing costs.
[0004] In order to solve the above technical problems, the technical solution adopted in this application is:
[0005] The present application provides a method for preparing a glue-free cosmetic brush, comprising the following steps:
[0006] S1, drying the PBT plastic, then heating and melting it for wire drawing, and cooling it to obtain the brush hair raw wire; high-temperature wire drawing and stretching the brush hair raw wire, cutting and arranging it to obtain the brush hair;
[0007] S2, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush head fixing part;
[0008] S3, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush tube whose upper end matches the lower end of the brush head fixing piece;
[0009] S4, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush handle whose upper end matches the brush tube;
[0010] S5, fixing the bristles in the bristle fixing member, fixing the bristle fixing member to the upper end of the brush tube, and fixing the lower end of the brush tube to the end of the brush handle to obtain the glue-free cosmetic brush.
[0011] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects:
[0012] 1. In the preparation method of the present application, the bristles, bristle fixings, brush tubes and brush handles are all made of the same raw material, PBT plastic. The cosmetic brushes prepared in this way do not need to be disassembled and classified when recycled. The entire cosmetic brush can be recycled for waste recycling, which simplifies the recycling procedure, saves costs, and has economic benefits.
[0013] 2. The preparation method of the present application is to fix the bristles on the mouth tube of the brush head fixing part by ultrasonic means, the mouth tube of the brush head fixing part is fixed to the brush tube by a snap buckle, and the brush tube is fixed to the brush handle in the form of a snap buckle or a thread. This method does not require glue in the entire preparation process of the cosmetic brush. Therefore, no harmful gas is generated during the preparation and use process, and no glue removal is required during recycling. It is more convenient for recycling and meets environmental protection needs.
[0014] 3. In the preferred embodiment of the present application, degradable yeast can be added to the PBT plastic, so that the entire makeup brush can be naturally degraded in a certain environment, which is more environmentally friendly and efficient.
[0015] In summary, the PBT plastic glue-free makeup brush of the present application has the advantages of reducing resource consumption, reducing energy consumption, reducing waste and pollution, improving circular economy, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a diagram of the subassembly and assembly of the components of the makeup brush in Example 1 of the present application;
[0018] Figure 2 This is a product picture of a makeup brush in Example 1 of the present application;
[0019] Figure 3 This is a diagram of the subpackaging and assembly of the various components of the makeup brush in Example 6 of the present application. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to the conventional conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.
[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to specific embodiments.
[0022] A method for preparing a glue-free cosmetic brush comprises the following steps:
[0023] S1, drying the PBT plastic, then heating and melting it for wire drawing, and cooling it to obtain the brush hair raw wire; high-temperature wire drawing and stretching the brush hair raw wire, cutting and arranging it to obtain the brush hair;
[0024] S2, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush head fixing part;
[0025] S3, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush tube whose upper end matches the lower end of the brush head fixing piece;
[0026] S4, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush handle whose upper end matches the brush tube;
[0027] S5, fixing the bristles in the bristle fixing member, fixing the bristle fixing member to the upper end of the brush tube, and fixing the lower end of the brush tube to the end of the brush handle to obtain the glue-free cosmetic brush.
[0028] In some embodiments of the present application, the drying temperature of the above steps S1-S4 is 130-140°C.
[0029] In some embodiments of the present application, the wire drawing in the above-mentioned S1 step is performed using a wire drawing machine, and the temperatures in different stages of heating and melting are 245-252°C, 265-273°C, 265-273°C, and 255-262°C, and the die temperature is 248-252°C; the cooling in the S1 step is performed by water cooling.
[0030] In some embodiments of the present application, the diameter of the bristle filaments in the above step S1 is 0.065-0.2 mm.
[0031] In some embodiments of the present application, the high-temperature wire drawing in step S1 uses a wire drawing machine, the temperature stages are 192-196°C, 188-192°C, 182-187°C and 182-187°C, and the stretching speed is 4.2-4.5 times.
[0032] In some embodiments of the present application, the above-mentioned step S1 further includes coloring the segments after cutting, and then drying and finishing to obtain the bristles.
[0033] In some embodiments of the present application, the brush head fixing member and the brush tube, as well as the brush tube and the brush handle are fixed together by a snap-fit structure or a threaded structure.
[0034] In some embodiments of the present application, the raw materials of the above-mentioned PBT plastic also include degradable yeast and a colorant.
[0035] In some embodiments of the present application, the addition ratio of the above-mentioned degradation yeast is 1%.
[0036] In some embodiments of the present application, in the above step S5, the bristles are fixed in the bristle fixing member by using ultrasonic technology.
[0037] In some embodiments of the present application, the brush head fixing part and the brush tube can be separated for the sake of aesthetics and convenience of changing the colors of different parts. Alternatively, in order to save costs and reduce a set of injection molds and production and assembly processes, the brush head fixing part and the brush tube buckle structure can be combined into one, or the brush tube and the brush handle can adopt an integrated structure without affecting the overall product of a single material.
[0038] In some other embodiments of the present application, the makeup brush of the present application as a whole can also be set to a lipstick-like rotating structure, and the bristles can be rotated out of the brush tube or the brush handle by rotating the brush handle for use, which is more convenient to carry and keep clean.
[0039] In the context of global advocacy of energy conservation, environmental protection and sustainable development, this application has the following advantages:
[0040] Reduce resource consumption: Promoting the recycling and reuse of recycled plastics can reduce the demand for raw materials and thus save resources.
[0041] Reduced energy consumption: Promoting the recycling of recycled plastics requires less energy than making new plastics, thus reducing energy consumption and carbon emissions.
[0042] Reducing waste and pollution: Promoting the recycling and reuse process of recycled plastics helps reduce waste generation and pollution to the environment. If plastic waste is directly discarded, it will accumulate in landfills or pollute water bodies, while the use of recycled plastics can reduce the amount of these wastes.
[0043] Improve circular economy: The use of recycled plastics promotes the realization of a circular economy, transforming waste plastics into useful products, extending their lifespan and reducing dependence on natural resources.
[0044] Lower costs: Recycled plastics cost less than new plastics because the cost of recycling and reuse is relatively low.
[0045] The features and performance of the present application are further described in detail below in conjunction with the embodiments.
[0046] Example 1
[0047] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0048] Making bristles: Dry the PBT plastic particles in a dryer at 135°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 250°C, 269°C, 269°C, and 260°C), and the die head is 250°C. Pull them into bristle strands with a diameter of 0.1mm. After the strands come out of the die, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 195°C, 190°C, 185°C, and 185°C) and stretched to improve toughness (stretching ratio 4.2 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for use;
[0049] Making brush head fixing parts: PBT particles are dried in a 135°C drying machine and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a mouth tube with a hollow inner wall and a buckle structure on the outer wall;
[0050] Making brush tubes: PBT granules are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush tube with a hollow inner band, a buckle structure that matches the brush head fixing part on the inner wall, and an internal thread on the lower inner wall;
[0051] Making a brush handle: The PBT particles are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a brush handle that is hollow inside and has an outer wall with external threads that match the brush tube.
[0052] Assembly: Fix the bristles to the inner wall of the brush head fixing part by ultrasonic technology; fix the brush head fixing part in the brush tube by snapping on both sides; fix the brush tube to the brush handle by screwing.
[0053] The packaging and assembly relationship of its various components is as follows Figure 1 As shown, the actual product (without bristles) is as Figure 2 shown.
[0054] Example 2
[0055] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0056] Making bristles: Dry the PBT plastic granules in a dryer at 135°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 252°C, 270°C, 270°C, 262°C), and the die head is 253°C. Pull them into bristle strands with a diameter of 0.15mm. After the strands come out of the mold, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 194°C, 190°C, 187°C, 185°C) and stretched to improve toughness (stretching ratio 4.5 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for later use;
[0057] Making brush head fixing parts: PBT particles are dried in a 135°C drying machine and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a mouth tube with a hollow inner wall and a buckle structure on the outer wall;
[0058] Making brush tubes: PBT granules are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush tube with a hollow inner band, a buckle structure that matches the brush head fixing part on the inner wall, and an internal thread on the lower inner wall;
[0059] Making a brush handle: The PBT particles are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a brush handle that is hollow inside and has an outer wall with external threads that match the brush tube.
[0060] Assembly: Fix the bristles to the inner wall of the brush head fixing part by ultrasonic technology; fix the brush head fixing part in the brush tube by snapping on both sides; fix the brush tube to the brush handle by screwing.
[0061] Example 3
[0062] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0063] Making bristles: Dry the PBT plastic granules in a dryer at 135°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 250°C, 268°C, 270°C, and 262°C), and the die head is 251°C. Pull them into bristle strands with a diameter of 0.2mm. After the strands come out of the die, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 196°C, 190°C, 187°C, and 185°C) and stretched to improve toughness (stretching ratio 4.5 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for later use;
[0064] Making brush head fixing parts: PBT particles are dried in a 135°C drying machine and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a mouth tube with a hollow inner wall and a buckle structure on the outer wall;
[0065] Making brush tubes: PBT granules are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush tube with a hollow inner band and a buckle structure on the inner wall that matches the brush head fixing part and a buckle structure on the lower part of the inner wall;
[0066] Making a brush handle: The PBT granules are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush handle that is hollow inside and has an outer wall with a snap-on structure that matches the brush tube.
[0067] Assembly: Fix the bristles to the inner wall of the brush head fixing part by ultrasonic technology; fix the brush head fixing part in the brush tube by snapping on both sides; fix the brush tube to the brush handle by snapping.
[0068] Example 4
[0069] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0070] In this embodiment, 1% by weight of degradation yeast was added to the PBT plastic;
[0071] Making bristles: Dry the PBT plastic particles in a dryer at 138°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 248°C, 269°C, 270°C, and 260°C), and the die head is 250°C. Pull them into bristle strands with a diameter of 0.2mm. After the strands come out of the die, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 196°C, 190°C, 188°C, and 185°C) and stretched to improve toughness (stretching ratio 4.3 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for use;
[0072] Making brush head fixing parts: PBT particles are dried in a 138°C drying machine and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a mouth tube with a hollow inner wall and a buckle structure on the outer wall;
[0073] Making brush tubes: PBT granules are dried in a 138°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush tube with a hollow inner band and a buckle structure on the inner wall that matches the brush head fixing part and a buckle structure on the lower part of the inner wall;
[0074] Making a brush handle: The PBT granules are dried in a 138°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush handle that is hollow inside and has a snap-on structure on the outer wall that matches the brush tube.
[0075] Assembly: Fix the bristles to the inner wall of the brush head fixing part by ultrasonic technology; fix the brush head fixing part in the brush tube by snapping on both sides; fix the brush tube to the brush handle by snapping.
[0076] Example 5
[0077] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0078] In this embodiment, 0.5% by weight of degradation yeast was added to the PBT plastic;
[0079] Making bristles: Dry the PBT plastic particles in a dryer at 135°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 248°C, 269°C, 270°C, and 260°C), and the die head is 250°C. Pull them into bristle strands with a diameter of 0.08mm. After the strands come out of the die, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 196°C, 190°C, 188°C, and 185°C) and stretched to improve toughness (stretching ratio 4.3 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for later use;
[0080] Brush head fixing part - brush tube integrated molding: PBT particles are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT particles in a high-temperature mold to form a card brush head fixing part - brush tube integrated molding structure. The structure is hollow and has a buckle structure on the inner wall at the lower end;
[0081] Making a brush handle: The PBT granules are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT granules at high temperature in a mold to form a brush handle that is hollow inside and has an outer wall with a snap-on structure that matches the brush tube.
[0082] Assembly: fix the bristles to the upper inner wall of the brush head fixing part-brush tube integrated structure by ultrasonic technology; fix the brush head fixing part-brush tube integrated structure to the brush handle by snap-fitting.
[0083] Example 6
[0084] A PBT makeup brush without glue, comprising a brush head, a brush tube and a brush handle, and also a brush head fixing part. The makeup brush is prepared by the following method:
[0085] Making bristles: Dry the PBT plastic particles in a dryer at 135°C, put them into a wire drawing machine and pass through different high temperatures (temperatures at different stages are 250°C, 269°C, 269°C, and 260°C), and the die head is 250°C. Pull them into bristle strands with a diameter of 0.1mm. After the strands come out of the die, they are cooled by cooling water, and then drawn and baked (temperatures at different stages are 195°C, 190°C, 185°C, and 185°C) and stretched to improve toughness (stretching ratio 4.2 times), then cut into sections, color them with dyes, dry them to fix the color, and then manually arrange them into bundles for use;
[0086] Making brush head fixing parts: PBT particles are dried in a 135°C drying machine and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form a mouth tube with a hollow inner wall and a buckle structure on the outer wall;
[0087] Making a brush tube and a brush handle: The PBT particles are dried in a 135°C dryer and put into an injection molding machine. The injection molding machine melts the PBT particles at high temperature in a mold to form an integrated brush tube and brush handle structure with a hollow interior and a snap-fit structure on the upper inner wall that matches the brush head fixing.
[0088] Assembly: Fix the bristles to the inner wall of the brush head fixing part by ultrasonic technology; fix the brush head fixing part to the brush tube-brush handle integrated structure by buckling on both sides. Figure 3 shown.
[0089] In summary, the glue-free makeup brush of the embodiment of the present application has the following advantages:
[0090] 1. In the preparation method of the present application, the bristles, bristle fixings, brush tubes and brush handles are all made of the same raw material, PBT plastic. The cosmetic brushes prepared in this way do not need to be disassembled and classified when recycled. The entire cosmetic brush can be recycled for waste recycling, which simplifies the recycling procedure, saves costs, and has economic benefits.
[0091] 2. The preparation method of the present application is to fix the bristles on the mouth tube of the brush head fixing part by ultrasonic means, the mouth tube of the brush head fixing part is fixed to the brush tube by a snap buckle, and the brush tube is fixed to the brush handle in the form of a snap buckle or a thread. This method does not require glue in the entire preparation process of the cosmetic brush. Therefore, no harmful gas is generated during the preparation and use process, and no glue removal is required during recycling. It is more convenient for recycling and meets environmental protection needs.
[0092] 3. In the preferred embodiment of the present application, degradable yeast can be added to the PBT plastic, so that the entire makeup brush can be naturally degraded in a certain environment, which is more environmentally friendly and efficient.
[0093] In summary, the PBT plastic glue-free makeup brush of the present application has the advantages of reducing resource consumption, reducing energy consumption, reducing waste and pollution, improving circular economy, and reducing production costs.
[0094] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present application.
Claims
1. A method for preparing a glue-free cosmetic brush, characterized in that: The following steps are involved: S1, drying the PBT plastic, then heating and melting it for wire drawing, and cooling it to obtain the brush hair raw wire; high-temperature wire drawing and stretching the brush hair raw wire, cutting and arranging it to obtain the brush hair; S2, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush head fixing part; S3, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush tube whose upper end matches the lower end of the brush head fixing piece; S4, drying the PBT plastic, melting it at high temperature and forming it using a mold to obtain a hollow brush handle whose upper end matches the brush tube; S5, fixing the bristles in the bristle fixing member, fixing the bristle fixing member to the upper end of the brush tube, and fixing the lower end of the brush tube to the end of the brush handle to obtain the glue-free cosmetic brush.
2. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: The drying temperature of the steps S1-S4 is 130-140°C.
3. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: In the step S1, a wire drawing machine is used for wire drawing, and the temperatures at different stages of heating and melting are 245-252°C, 265-273°C, 265-273°C, and 255-262°C, and the die temperature is 248-252°C; and the cooling in the step S1 is carried out by water cooling.
4. The method for preparing a glue-free cosmetic brush according to claim 3, characterized in that: The diameter of the bristle filaments in step S1 is 0.065-0.2 mm.
5. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: The high temperature wire drawing in step S1 adopts a wire drawing machine, the temperature stages are 192-196° C., 188-192° C., 182-187° C. and 182-187° C., and the stretching speed is 4.2-4.5 times.
6. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: The step S1 includes coloring the segments after cutting, and drying and finishing the segments to obtain the bristles.
7. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: The brush head fixing piece and the brush tube, as well as the brush tube and the brush handle are matched and fixed by adopting a snap structure or a threaded structure.
8. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: The raw materials of the PBT plastic also include degradation yeast and coloring agent.
9. The method for preparing a glue-free cosmetic brush according to claim 8, characterized in that: The addition ratio of the degradation yeast is 1%.
10. The method for preparing a glue-free cosmetic brush according to claim 1, characterized in that: In step S5, the bristles are fixed in the bristle fixing member by using ultrasonic technology.