Coating product packaging inner container and coating product packaging box

Abstract

The utility model relates to a coating product packaging inner container and a coating product packaging box, the coating product packaging inner container comprises a sealing cover, a base plate and a sealing ring, the sealing cover is used for covering the base plate in an opening and closing mode, the base plate is provided with a first side wall, and a sealing ring is arranged between the first side wall and the sealing ring; an annular sealing lip is arranged at the top of the outer side wall of the sealing ring, and an avoiding groove is formed in the lower portion of the annular sealing lip and used for providing a containing space for the annular sealing lip which deforms due to extrusion in the opening and closing process of the sealing cover. According to the packaging inner container, the sealing performance between the sealing cover and the base plate is enhanced, permanent deformation or damage caused by excessive extrusion in the sealing cover opening and closing process of the sealing structure is avoided, and the good sealing effect can still be kept after multiple times of opening and closing.

Description

Technical Field

[0001] This application relates to the field of product packaging technology, specifically to a coating packaging liner and a coating packaging box. Background Technology

[0002] In the product packaging industry, the sealing performance of the product's inner liner is a core element in ensuring product hygiene, safety, and user experience. Good sealing effectively blocks external microorganisms, dust, and contaminants, preventing them from contacting the internal powder or cream, and avoiding skin health risks caused by oxidation, spoilage, or bacterial growth. However, existing coating containers often have tiny gaps between the cap and base when closed due to manufacturing tolerances, material properties, or structural design limitations, making a perfect seal difficult to achieve. These gaps become channels for external contaminants to enter, seriously threatening the product's long-term preservation and safety. Utility Model Content

[0003] To address the problem of incomplete sealing caused by minute gaps when the inner liner cap of the coating container closes with the chassis in existing technologies.

[0004] This application provides a coating product packaging liner, including a cap, a base plate and a sealing ring. The cap is used to open and close to cover the base plate. The base plate has a first side wall and a sealing ring is provided between the first side wall and the sealing ring.

[0005] The outer wall of the sealing ring is provided with an annular sealing lip at the top, and a relief groove is provided below the annular sealing lip to provide a space for the annular sealing lip to be deformed by compression during the opening and closing of the cover.

[0006] Furthermore, the inner diameter of the sealing ring is smaller than the outer diameter of the sealing ring.

[0007] Furthermore, the shape of the clearance groove is one of trapezoidal, V-shaped, U-shaped or arc-shaped groove.

[0008] Furthermore, the bottom inner wall of the sealing ring is provided with a guide slope that is inclined outward along the axial direction.

[0009] Furthermore, the outer wall of the sealing ring is provided with at least one radially protruding sealing rib.

[0010] Furthermore, the inner wall of the sealing ring is provided with at least one annular groove.

[0011] Furthermore, the sealing ring has at least one first protrusion on the side facing the sealing ring, and the annular groove matches the first protrusion.

[0012] Furthermore, the cover has an annular protrusion on the side facing the chassis, and the inner wall of the annular protrusion is interference-fitted with the annular sealing lip.

[0013] Furthermore, the sealing ring is made of thermoplastic rubber, nitrile rubber, or silicone.

[0014] This application also provides a coating product packaging box, including the coating product packaging liner.

[0015] Based on the above technical solutions, the coating product packaging liner and coating product packaging box described in this application have the following beneficial effects:

[0016] This application incorporates a sealing ring between the sealing ring and the first sidewall of the chassis to ensure an effective sealing barrier when the cap is closed. The top of the outer wall of the sealing ring features an annular sealing lip that slightly deforms under pressure from the cap, adhering tightly to the inner wall of the cap to achieve a seal. A relief groove is located below the annular sealing lip to provide space for its deformation under pressure, preventing permanent deformation or damage due to excessive compression, optimizing the sealing effect, and extending the service life of the sealing ring. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a cross-sectional view of the assembly state of the sealing ring, sealing ring and chassis of the inner liner of the coating packaging according to an embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of the inner liner of the coating packaging according to an embodiment of this application;

[0020] Figure 3 for Figure 2 A magnified view of section A in the image.

[0021] Figure 4 This is a schematic diagram of the sealing ring structure of the inner liner of the coating packaging according to an embodiment of this application;

[0022] Figure 5 This is a cross-sectional view of the sealing ring of the inner liner of the coating packaging according to an embodiment of this application;

[0023] Figure 6 This is a cross-sectional view of another possible implementation of the sealing ring for the inner liner of the coating packaging according to an embodiment of this application;

[0024] Figure 7 This is an exploded view of the inner liner of the coating packaging according to an embodiment of this application.

[0025] The corresponding reference numerals in the figure are as follows: 1. Cover; 11. Annular flange; 2. Chassis; 21. First side panel; 22. Second side panel; 23. Third side panel; 24. Connecting groove; 25. Notch; 121. Receiving cavity; 3. Sealing ring; 31. First protruding section; 32. Second protruding section; 33. Filler; 4. Sealing ring; 41. Annular sealing lip; 42. Clearance groove; 43. Guide slope; 44. Sealing rib; 45. Annular groove. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "upper," "lower," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or regarding the vertical, perpendicular, or gravitational direction of the component itself. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation,” “setup,” and “connection” appearing herein should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can indicate that one component is directly attached to another component or that one component is attached to another component via an intermediate component; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. A feature described in one embodiment herein may be applied alone or in combination with other features to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0029] like Figures 1-7 As shown in the embodiments of this application, a coating product packaging liner and a coating product packaging box are provided. The coating product packaging liner is a component used to contain coating products in various forms, such as liquids, powders, pastes, or ointments. The coating product packaging liner can effectively isolate external contaminants to protect the hygiene of the coating product, while providing a stable structural support to ensure the stability of the container, thereby facilitating easy access and use of the product by the user. In the embodiments of this application, the coating products mentioned broadly cover two major categories: color cosmetics and skin care products.

[0030] In this embodiment of the application, the inner liner of the coating product packaging includes a cap 1, a base 2 and a sealing ring 3. The cap 1 is used to open and close to cover the base 2. The base 2 has a first side circumference 21, and a sealing ring 4 is provided between the first side circumference 21 and the sealing ring 3.

[0031] The top of the outer wall of the sealing ring 4 is provided with an annular sealing lip 41, and the bottom of the annular sealing lip 41 is provided with a relief groove 42, which is used to provide a space for the annular sealing lip 41 to be deformed by compression during the opening and closing of the cover 1.

[0032] Specifically, the cap 1 is used to close or open the inner liner, protecting the internal coating from external contamination. The edge of the cap 1 is typically equipped with a locking structure (not shown in the figure), which engages with a corresponding locking component on the chassis 2 through rotation, pressing, or other mechanical actions, achieving a secure lock or easy opening. The chassis 2, as the main body of the packaging inner liner, directly supports the coating. It has an upwardly extending first side panel 21, with a second side panel 22 parallel to it on its inner side. The second side panel 22 and the bottom surface of the chassis 2 enclose a receiving cavity 121 for storing the coating material. The shape and height of the second side panel 22 are designed according to the shape and capacity requirements of the coating. A sealing ring 3 is positioned between the first side panel 21 and the second side panel 22 to enhance the sealing effect. The sealing ring 3 is an annular structure with a certain degree of elasticity to provide better sealing pressure when the cap 1 is tightened.

[0033] Examples of embodiments in this application, such as Figure 1-3 As shown, a sealing ring 4 is also provided between the sealing ring 3 and the first side circumference 21 to ensure an effective sealing barrier is formed when the cover 1 is closed. An annular sealing lip 41 is designed on the top of the outer wall of the sealing ring 4. This annular sealing lip 41 deforms slightly under the pressure of the cover 1, fitting tightly against the inner wall of the cover 1 to achieve a seal. A relief groove 42 is provided below the annular sealing lip 41. The relief groove 42 optimizes the deformation recovery ability of the annular sealing lip 41 under the pressure of the cover 1, preventing permanent deformation or damage to the annular sealing lip 41 due to excessive compression during the opening and closing of the cover. It also ensures that the annular sealing lip 41 maintains a good sealing effect after multiple openings and closings, further optimizing the sealing effect and extending the service life of the sealing ring.

[0034] The inner wall of the sealing ring 4 is tightly fitted to the outer wall of the sealing ring 3, forming a first sealing interface. At the same time, the annular sealing lip 41 on the outer wall of the sealing ring 4 contacts the inner wall of the cover 1, achieving another layer of sealing. The sealing ring 3 serves as an intermediate component, connecting with the sealing ring 4 and also cooperating with the first side panel 21 and the second side panel 22 of the chassis 2, together forming a complete sealing system.

[0035] In one possible implementation, the outer diameter of the annular sealing lip 41 is larger than the outer diameter of the outer wall of the sealing ring 4 body to ensure reliable sealing or positioning. The depth and width of the clearance groove can be optimized according to the deformation characteristics of the annular sealing lip 41 to ensure that deformation can be effectively accommodated without affecting the sealing effect.

[0036] Furthermore, the inner diameter of the sealing ring 4 is smaller than the outer diameter of the sealing ring 3. This design ensures that the sealing ring 4 fits tightly against the sealing ring 3, while providing a certain preload to enhance the sealing effect. This design allows the sealing ring 4 to undergo slight elastic deformation during installation, thereby tightly wrapping around the sealing ring 3 and forming an effective sealing interface.

[0037] Furthermore, the shape of the clearance groove 42 can be one of trapezoidal, V-shaped, U-shaped or arc-shaped grooves.

[0038] Examples of embodiments in this application, such as Figure 5 As shown, the clearance groove 42 is an arc-shaped groove that connects to the bottom of the annular sealing lip 41. In some possible embodiments, the angle between the bottom of the clearance groove 42 and the groove wall connected to the annular sealing lip 41 is an obtuse angle to optimize deformation energy storage.

[0039] Furthermore, such as Figure 3 and 5 As shown, the bottom inner wall of the sealing ring 4 is provided with a guide slope 43 that is inclined outward along the axial direction. The guide slope 43 is located on the bottom inner wall of the sealing ring 4 so as to contact the outer wall of the sealing ring 3. During the installation process, the guide slope 43 plays the role of guiding the sealing ring 4 to smoothly fit into the sealing ring 3, thereby improving the assembly efficiency.

[0040] In one possible implementation, such as Figure 6 As shown, the outer wall of the sealing ring 4 is provided with at least one radially protruding sealing rib 44. The sealing rib 44 can be provided on the outer wall of the sealing ring 4 below the relief groove 42, for pressing contact with the first side panel 21 to achieve limiting and fixing of the sealing ring 4. The setting of the sealing rib 44 increases the contact area between the sealing ring 4 and the inner wall of the cover 1, improving the sealing effect. At the same time, the setting of the sealing rib 44 helps to disperse stress and prevent the sealing ring 4 from being locally damaged under pressure.

[0041] Furthermore, the inner wall of the sealing ring 4 is provided with at least one annular groove 45. The sealing ring 3 has at least one first protrusion 31 on the side facing the sealing ring 4, and the annular groove 45 matches the first protrusion 31. The tight fit between the annular groove 45 and the first protrusion 31 effectively prevents fluid or gas leakage and improves the sealing effect. This sealing structure is suitable for different working environments and sealing requirements; by adjusting the number and shape of the annular groove and the first protrusion, different application scenarios can be met.

[0042] In this embodiment, an annular groove 45 is provided on the inner wall of the sealing ring 4, and a first protruding section 31 corresponding to the annular groove 45 is provided on the side of the sealing ring 3 facing the sealing ring 4. The shape, size and position of the first protruding section 31 are matched with the annular groove 45. When the sealing ring 3 and the sealing ring 4 are engaged, the first protruding section 31 can be completely embedded in the annular groove 45 to form a tight sealing structure.

[0043] In another possible implementation, two equally spaced annular grooves 45 are designed on the inner wall of the sealing ring 4, and the sealing ring 3 is provided with two first protrusions 31 corresponding to the annular grooves 45 on the side facing the sealing ring 4. The shape, size and position of each first protrusion 31 are matched with the annular grooves 45.

[0044] Furthermore, the cover 1 has an annular flange 11 on the side facing the chassis 2, and the inner wall of the annular flange 11 is press-fitted with the annular sealing lip 41. When the cover 1 is closed with the chassis, the annular sealing lip 41 will deform due to compression, thus tightly fitting against the outer wall of the annular flange 11. The press-fit between the annular flange 11 and the annular sealing lip 41 ensures that the sealing structure remains tight under dynamic conditions, guaranteeing the sealing effect between the cover 1 and the chassis 2.

[0045] Furthermore, the material of sealing ring 4 is thermoplastic rubber, nitrile rubber, or silicone. Thermoplastic rubber (TPE) is a material combining the elasticity of rubber and the processing properties of thermoplastics. It possesses good weather resistance, chemical resistance, and abrasion resistance, making it suitable for various temperature and pressure environments. It can be molded through thermoplastic processing methods such as injection molding and extrusion, facilitating large-scale production. Nitrile rubber (NBR) is a widely used synthetic rubber with excellent oil resistance, abrasion resistance, and chemical corrosion resistance. It is suitable for sealing applications involving contact with petroleum, greases, and various chemicals. It has moderate strength and elasticity and is easy to process and mold. Silicone is a high-performance synthetic rubber with excellent high-temperature resistance, low-temperature resistance, oxidation resistance, and ozone resistance. It also has good biocompatibility and electrical insulation. Silicone has good elasticity, is easily compressed and recovers, and is suitable for sealing applications requiring frequent compression and release.

[0046] In this embodiment, the sealing ring 3 is embedded between the first sidewall 21 and the second sidewall 22 of the chassis 2, forming a space to accommodate the sealing ring 3. This ensures that the sealing ring 3 is firmly fixed to the chassis 2 during installation, preventing it from falling off or shifting due to movement or vibration. In a preferred embodiment, a third sidewall 23 is provided between the first sidewall 21 and the second sidewall 22. A groove is formed between the third sidewall 23 and the second sidewall 22 to accommodate the first part of the sealing ring 3. A groove is also formed between the third sidewall 23 and the first sidewall 21 to accommodate the second part of the sealing ring 3, allowing the sealing ring 3 to be supported on the third sidewall 23. When the cover 1 is closed onto the chassis 2, the cover 1 comes into contact with the sealing ring 3. Because the sealing ring 3 is firmly supported on the third sidewall 23, it effectively prevents fluid or gas from leaking from the gap between the chassis 2 and the cover 1, ensuring both stability and a sealing effect.

[0047] In one possible implementation, the sealing ring 3 has an inverted U-shaped cross-section. The inverted U-shaped sealing ring 3 is snapped onto the third sidewall 23, and a filler 33 is provided between the inverted U-shaped structure and the third sidewall 23 to reduce the gap between the sealing ring 3 and the third sidewall 23.

[0048] In this embodiment, the filler 33 can be a soft rubber layer disposed within the U-shaped groove. The filler 33 is interference-fitted with the third side panel 23, specifically an upper and lower interference fit. The inverted U-shaped sealing ring can better adapt to the shape of the third side panel 23, and the interference fit of the filler effectively reduces gaps, thereby improving sealing performance. The design of the filler 33 also ensures the stable position of the sealing ring 3 within the chassis 2, preventing displacement even during transportation or use. Furthermore, the soft rubber filler can absorb and disperse external forces, reducing wear between the sealing ring 3 and the third side panel 23, and extending the service life of the packaging liner.

[0049] Furthermore, the sealing ring 3 has a second protruding section 32 on the side facing the sealing ring 4. The second protruding section 32 is arranged parallel to the first protruding section 31 and abuts against the bottom end of the sealing ring 4, enhancing the contact area and stability between the sealing ring 3 and the sealing ring 4. The outer diameter of the second protruding section 32 is larger than the outer diameter of the first protruding section 31, and it is used to engage with the fixing protrusion (not shown in the figure) on the chassis 2 to fix the sealing ring 3 to the chassis 2. This achieves double fixation of the sealing ring 3 on the chassis 2, effectively preventing the sealing ring 3 from shifting or falling off due to vibration or pressure changes during use.

[0050] This application also provides a coating product packaging box, including a coating product packaging liner.

[0051] The inner liner of the coating product packaging can be detachably installed inside the coating product packaging box. After the coating product inside is used up, the old inner liner can be easily removed and replaced with a new one, so that the packaging box can be reused, which helps to save costs and protect the environment.

[0052] In the embodiments of this application, such as Figure 7 As shown, a plurality of connecting grooves 24 are provided at the bottom of the outer periphery of the chassis 2, and the plurality of connecting grooves 24 are arranged sequentially at intervals. Preferably, there are four connecting grooves 24, respectively provided on the four outer side walls of the chassis 2, for detachable connection between the inner liner of the coated product packaging and the outer shell of the packaging box. Furthermore, notches 25 are provided at the four apex corners of the chassis 2, the notches 25 being used to abut against the inner bottom of the outer shell, to achieve a stable fit between the chassis 2 and the inner bottom, avoiding the introduction of a third component, thereby achieving stable fixation between the chassis 2 and the inner bottom of the packaging box.

[0053] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

Claims

1. A coating product package liner, characterized by, The sealing ring (3) is arranged between the first side wall (21) of the bottom disc (2) and the sealing ring (3), and a sealing ring (4) is arranged between the sealing ring (3) and the cover (1). An annular sealing lip (41) is arranged on the top of the outer side wall of the sealing ring (4), and an avoiding groove (42) is arranged below the annular sealing lip (41) to provide a space for the annular sealing lip (41) to be extruded and deformed during the opening and closing of the cover (1).

2. A coating material package liner according to claim 1, wherein The inner diameter of the sealing ring (4) is smaller than the outer diameter of the sealing ring (3).

3. The applicator package liner of claim 1, wherein The avoiding groove (42) is in one of trapezoidal, V-shaped, U-shaped or arc-shaped groove.

4. The applicator package liner of claim 1, wherein The bottom inner wall of the sealing ring (4) is provided with an outwardly inclined guide slope (43) along the axial direction.

5. The applicator package liner of claim 1, wherein At least one radially protruding sealing rib (44) is arranged on the outer side wall of the sealing ring (4).

6. The applicator package liner of claim 1, wherein At least one annular groove (45) is arranged on the inner side wall of the sealing ring (4).

7. A coating material package liner according to claim 6, wherein At least one first protruding section (31) is arranged on the side of the sealing ring (3) facing the sealing ring (4), and the annular groove (45) is matched with the first protruding section (31).

8. The applicator package liner of claim 1, wherein An annular protruding edge (11) is arranged on the side of the cover (1) facing the bottom disc (2), and the inner wall of the annular protruding edge (11) is in interference fit with the annular sealing lip (41).

9. The applicator package liner of claim 1, wherein The material of the sealing ring (4) is thermoplastic rubber, nitrile rubber or silicone.

10. A package of applicator products, characterized in that The application further provides a coating product packaging container comprising the coating product packaging liner according to any one of claims 1-9.

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