Environment-friendly cosmetic bottle with antioxidant function
By using cosmetic bottles made of low-density polyethylene and polypropylene, combined with a pump core structure design, the problems of fragility, heavy weight, and poor sealing performance of glass and plastic cosmetic bottles are solved, achieving lightweight, environmental protection, and durability, while ensuring the purity of materials and smooth dispensing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUYAO HONGSHENG COMMODITY CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-31
AI Technical Summary
Most existing environmentally friendly cosmetic bottles are made of glass or plastic, which have problems such as being fragile, heavy, having high production energy consumption, causing serious environmental pollution, and not being resistant to high temperatures, and their sealing performance is also poor.
The cosmetic bottle, made of low-density polyethylene and polypropylene, features a pump core design that enables automatic valve opening and closing and sealing, preventing the cream from contacting the outside environment. It also boasts excellent acid and alkali resistance and antioxidant properties.
It achieves lightweight, environmentally friendly, and durable cosmetic bottles, while ensuring the purity of the materials and smooth dispensing, avoiding contamination of the cream and degradation of sealing performance.
Smart Images

Figure CN224572367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cosmetic bottle technology, specifically to an environmentally friendly cosmetic bottle with antioxidant function. Background Technology
[0002] The most obvious function of cosmetic bottles is to hold various liquid, cream, or powder cosmetics, such as foundation, lotion, face cream, perfume, and lipstick, making it convenient for people to carry and use cosmetics and preventing them from spoiling or spilling. Some cosmetic bottles come with special auxiliary tools or designs, such as droppers, brushes, and sponges, to help users accurately pick up and apply cosmetics, improving the convenience and effectiveness of makeup application.
[0003] Currently, most environmentally friendly cosmetic bottles are made of glass and plastic. Glass is brittle and easily broken, especially during transportation and use. Drops can cause breakage, wasting product and potentially posing safety hazards. Glass also has a high density, making packaging heavy and increasing transportation costs and carrying inconvenience. The molding and processing of glass bottles is complex, energy-intensive, and has relatively low production efficiency, with high mold costs. Surface printing on glass is also difficult, typically limited to single-color screen printing or labeling. Glass processing is energy-intensive and environmentally polluting. Plastic is prone to deformation at high temperatures, making it unsuitable for cosmetics requiring high-temperature treatment. Plastic bottles are also easily scratched or damaged, affecting aesthetics and potentially reducing sealing performance. Therefore, we propose an environmentally friendly cosmetic bottle with antioxidant properties. Utility Model Content
[0004] The purpose of this invention is to provide an environmentally friendly cosmetic bottle with antioxidant function to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: An environmentally friendly cosmetic bottle with antioxidant properties includes: The outer bottle has a middle section at its top, a cap at its top, a fixed groove inside the cap, a movable rod slidably installed in the fixed groove, a stopper fixedly installed on one side of the movable rod, a pump core fixedly installed inside the middle section, a movable plug at the top of the pump core, and a pressure cap slidably connected to the cap fixedly installed on the outer wall of the movable plug.
[0006] When you hold the outer bottle, press the cap on the pump head with your finger. The cap will cause the movable plug to squeeze the pump core downwards, reducing the volume of the internal cavity of the pump core and generating negative pressure. This negative pressure will draw the material from the outer bottle into the pump core cavity through the bottom channel of the pump core. When the movable plug moves down, the material in the pump core will flow out from the nozzle through the internal channel of the movable rod.
[0007] Preferably, a spring is provided in the fixed groove and on one side of the movable rod, a slot is provided at the bottom of the movable rod, a locking block is fixedly installed on the top of the movable plug, and the top of the locking block extends through the fixed groove into the slot.
[0008] When the movable plug moves down, the top inclined locking block inserts into the inclined locking groove at the bottom of the movable rod. The locking block pushes the movable rod to slide laterally along the fixed groove, causing the plug to leave the closed position and opening the discharge channel. The material in the pump core flows out from the plug through the internal channel of the movable rod. Then, the pressure cap is released, the spring elastically rebounds, and pushes the movable rod back to the initial position. The plug re-closes the discharge channel, and the movable plug moves up with the spring force, restoring the volume of the pump core cavity. If the material in the outer bottle decreases, the piston moves upward due to the pressure difference in the cavity to fill the material space and ensure smooth subsequent material suction.
[0009] Preferably, the card block is slidably connected to the card slot.
[0010] This includes ensuring that the card block can slide within the card slot.
[0011] Preferably, the top of the middle section is snapped with a cover, and the head cap is disposed inside the cover.
[0012] The cover can be separated from the middle section. At the same time, the cover can protect the head cap and the internal discharge structure, and is dustproof, leakproof and easy to disassemble and clean.
[0013] Preferably, a piston is provided at the bottom of the inner cavity of the outer bottle, and the piston is made of low-density polyethylene.
[0014] Low-density polyethylene (LDPE) is the lightest variety of polyethylene resin. It appears as milky white, tasteless, odorless, non-toxic, and matte waxy granules. It possesses good flexibility, extensibility, electrical insulation, transparency, ease of processing, and a certain degree of air permeability. It also exhibits good chemical stability, being resistant to alkalis and common organic solvents.
[0015] Preferably, the middle section is snapped into the outer bottle, and the middle section is slidably connected to the cap.
[0016] When materials need to be added, the outer bottle separates from the middle section to facilitate feeding and ensure that the cap can slide within the middle section.
[0017] Preferably, the cross-section of the card block is inclined, and the movable rod is inclined.
[0018] The top inclined locking block is inserted into the inclined locking groove at the bottom of the movable rod. The locking block pushes the movable rod to slide laterally along the fixed groove, causing the plug to leave the closed position.
[0019] Preferably, the cover, head cap, middle section, stopper and outer bottle are all made of polypropylene.
[0020] Polypropylene is a non-toxic, harmless, and odorless material. It has good tensile strength and certain mechanical strength, avoids reaction with cosmetics, and ensures the purity of the material and smooth handling.
[0021] Preferably, the spring is made of 304 stainless steel.
[0022] Springs made from 304 stainless steel have high hardness and elastic limit, maintaining stable elastic performance over a long period. At the same time, they possess a certain degree of toughness, making them less prone to brittle fracture when subjected to repeated stretching and compression, and exhibiting superior fatigue resistance compared to many brittle materials.
[0023] Preferably, the movable plug is made of high-density polyethylene material.
[0024] High-density polyethylene (HDPE) sheets are particularly advantageous due to their high strength, corrosion and wear resistance, and non-toxic and environmentally friendly properties. Compared with the prior art, the beneficial effects of this utility model are: 1. This environmentally friendly cosmetic bottle with antioxidant function adopts a new self-closing structure. When the cream is squeezed down during use, the valve at the front end will automatically open to dispense the liquid and will automatically close after dispensing. Its features are that there is no residue on the outside after use and the cream is automatically isolated from the outside world, avoiding contact and pollution between the cream and the outside world, thus achieving a more environmentally friendly and longer-lasting effect.
[0025] 2. This environmentally friendly cosmetic bottle with antioxidant function is made of polypropylene, which has excellent acid and alkali resistance and can be used stably in various acid and alkali media. It can also resist the corrosion of most organic solvents. Polypropylene is a non-toxic, harmless, and odorless material with good tensile strength and certain mechanical strength. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a detailed structural diagram of the internal structure of the headgear in this utility model; Figure 3 This is a schematic diagram of the structure of the middle section and the pump core in this utility model; Figure 4 This is a cross-sectional structural diagram of the headgear in this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the plug and movable rod in this utility model; Figure 7 This is a cross-sectional structural diagram of the piston and outer bottle in this utility model.
[0027] In the diagram: 1. Cover; 2. Head cap; 3. Middle section; 4. Pump core; 5. Piston; 6. Outer bottle; 7. Spring; 8. Nozzle; 9. Movable rod; 10. Pressure cap; 11. Movable plug; 12. Fixing groove; 13. Locking block; 14. Locking slot. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0030] Please see Figure 1 - Figure 7 As shown, this utility model provides a technical solution: An environmentally friendly cosmetic bottle with antioxidant properties includes: The outer bottle 6 has a middle section 3 at its top, and a cap 2 at its top. A fixing groove 12 is provided inside the cap 2, and a movable rod 9 is slidably installed in the fixing groove 12. A stopper 8 is fixedly installed on one side of the movable rod 9. A pump core 4 is fixedly installed inside the middle section 3, and a movable plug 11 is provided at the top of the pump core 4. A pressure cap 10, which is slidably connected to the cap 2, is fixedly installed on the outer wall of the movable plug 11. When the outer bottle 6 is held, the pressure cap 10 on the cap 2 is pressed down by the pressure cap 10, which causes the movable plug 11 to squeeze the pump core 4 downward. The internal cavity volume of the pump core 4 is reduced, generating negative pressure. The negative pressure draws the material in the outer bottle 6 into the pump core 4 cavity through the bottom channel of the pump core 4. When the movable plug 11 moves down, the material in the pump core 4 flows out from the stopper 8 through the internal channel of the movable rod 9.
[0031] In this embodiment, a spring 7 is provided in the fixed groove 12 and on one side of the movable rod 9. A slot 14 is provided at the bottom of the movable rod 9. A locking block 13 is fixedly installed on the top of the movable plug 11. The top of the locking block 13 extends through the fixed groove 12 into the slot 14. When the movable plug 11 moves down, the top inclined locking block 13 inserts into the inclined slot 14 at the bottom of the movable rod 9. The locking block 13 pushes the movable rod 9 to slide laterally along the fixed groove 12, causing the stopper 8 to leave the closed position and open the discharge channel. The material in the pump core 4 flows out from the stopper 8 through the internal channel of the movable rod 9. Then, the pressure cap 10 is released, the spring 7 elastically rebounds, pushing the movable rod 9 back to the initial position, and the stopper 8 closes the discharge channel again. The movable plug 11 moves upward under the action of the rebound force, and the volume of the pump core 4 cavity is restored. If the material in the outer bottle 6 decreases, the piston 5 moves upward due to the pressure difference in the cavity to fill the material space and ensure smooth subsequent material suction.
[0032] In this embodiment, the card block 13 is slidably connected to the card slot 14, ensuring that the card block 13 can slide within the card slot 14.
[0033] In this embodiment, the top of the middle section 3 is snapped with a cover 1. The snapping is an interference fit connection. The head cap 2 is placed inside the cover 1. When in use, the cover 1 is separated from the middle section 3. At the same time, the cover 1 can protect the head cap 2 and the internal discharge structure, and is dustproof, leakproof and easy to disassemble and clean.
[0034] In this embodiment, a piston 5 is provided at the bottom of the inner cavity of the outer bottle 6. The piston 5 is made of low-density polyethylene, which is the lightest variety of polyethylene resin. It is a milky white, tasteless, odorless, non-toxic, and matte waxy granule. It has good flexibility, extensibility, electrical insulation, transparency, ease of processing, and a certain degree of air permeability. It also has good chemical stability, is resistant to alkalis and common organic solvents.
[0035] In this embodiment, the middle section 3 is snapped into the outer bottle 6, and this snapping is also an interference fit. The middle section 3 is slidably connected to the cap 2. When materials need to be added, the outer bottle 6 is separated from the middle section 3 to facilitate feeding and ensure that the cap 2 can slide inside the middle section 3.
[0036] In this embodiment, the cross-section of the locking block 13 is inclined, the movable rod 9 is inclined, the top inclined locking block 13 is inserted into the inclined slot 14 at the bottom of the movable rod 9, and the locking block 13 pushes the movable rod 9 to slide laterally along the fixed slot 12, so that the plug 8 leaves the closed position.
[0037] In this embodiment, the cover 1, head cap 2, middle section 3, stopper 8, and outer bottle 6 are all made of polypropylene. Polypropylene is a non-toxic, harmless, and odorless material. Polypropylene has good tensile strength and certain mechanical strength, which avoids reaction with cosmetics and ensures the purity of the material and smooth handling.
[0038] In this embodiment, spring 7 is made of 304 stainless steel. Springs made of 304 stainless steel have high hardness and elastic limit, and can maintain stable elastic performance over a long period of time. At the same time, it has a certain degree of toughness, and is not easy to break when subjected to repeated stretching and compression, and its fatigue resistance is better than many brittle materials.
[0039] In this embodiment, the movable plug 11 is made of high-density polyethylene (HDPE). HDPE sheets have advantages such as high strength, corrosion and wear resistance, and non-toxicity and environmental friendliness. In this embodiment, an environmentally friendly cosmetic bottle with antioxidant function is used by holding the outer bottle 6 and pressing the cap 10 on the head cap 2. The cap 10 drives the movable plug 11 to squeeze the pump core 4 downward, reducing the internal volume of the pump core 4 and generating negative pressure. The negative pressure draws the material in the outer bottle 6 into the pump core 4 cavity through the bottom channel of the pump core 4. When the movable plug 11 moves down, the top inclined locking block 13 inserts into the inclined locking groove 14 at the bottom of the movable rod 9. The locking block 13 pushes the movable rod 9 to slide laterally along the fixed groove 12, causing the stopper 8 to leave the closed position and open the discharge channel. The material in the pump core 4 flows out from the stopper 8 through the internal channel of the movable rod 9. Then, the cap 10 is released, the spring 7 elastically rebounds, pushing the movable rod 9 back to the initial position, and the stopper 8 re-closes the discharge channel. The movable plug 11 moves upward under the action of the rebound force, and the volume of the pump core 4 cavity is restored. If the material in the outer bottle 6 decreases, the piston 5 moves upward due to the pressure difference in the cavity to fill the material space and ensure smooth subsequent material suction.
[0040] When materials need to be added, external force is applied to separate the outer bottle 6 from the middle section 3, and materials are added into the outer bottle 6. At this time, the piston 5 moves downward as the materials increase. After adding materials, the middle section 3 and the outer bottle 6 are clamped together to ensure a seal. If the outlet is blocked, the cover 1 can be removed, the head cap 2 can be disassembled, the movable rod 9 can be taken out to clean the nozzle 8 and the flow channel, and it can be put back into use after reassembly.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An environmentally friendly cosmetic bottle with an antioxidant function, characterized by: include: The outer bottle (6) has a middle section (3) at the top and a cap (2) at the top of the middle section (3). A fixing groove (12) is provided in the cap (2). A movable rod (9) is slidably installed in the fixing groove (12). A stopper (8) is fixedly installed on one side of the movable rod (9). A pump core (4) is fixedly installed in the middle section (3). A movable plug (11) is provided at the top of the pump core (4). A pressure cap (10) that is slidably connected to the cap (2) is fixedly installed on the outer side wall of the movable plug (11). A spring (7) is provided in the fixing groove (12) and on one side of the movable rod (9). A slot (14) is provided at the bottom of the movable rod (9). A locking block (13) is fixedly installed at the top of the movable plug (11). The top of the locking block (13) extends through the fixing groove (12) into the slot (14).
2. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The card block (13) is slidably connected to the card slot (14).
3. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The top of the middle section (3) is fitted with a cover (1), and the head cap (2) is placed inside the cover (1).
4. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: A piston (5) is provided at the bottom of the inner cavity of the outer bottle (6), and the piston (5) is made of low-density polyethylene.
5. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The middle section (3) is snapped into the outer bottle (6), and the middle section (3) is slidably connected to the cap (2).
6. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The cross-section of the card block (13) is inclined, and the movable rod (9) is inclined.
7. The environmentally friendly cosmetic bottle with antioxidant function according to claim 3, characterized in that: The cover (1), head cap (2), middle section (3), stopper (8) and outer bottle (6) are all made of polypropylene.
8. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The spring (7) is made of 304 stainless steel.
9. The environmentally friendly cosmetic bottle with antioxidant function according to claim 1, characterized in that: The movable plug (11) is made of high-density polyethylene material.