An applicator package inner container and applicator package

Abstract

The application discloses a cosmetic packaging box inner container and a cosmetic packaging box, which comprises a bottom box, a sealing ring and a cover, the cover is used for covering on the bottom box, the bottom box has a side wall, the bottom box is internally provided with a first convex edge and a second convex edge, the first convex edge and the second convex edge are both arranged in parallel with the side wall, and the second convex edge is arranged between the first convex edge and the side wall; a first part for accommodating the sealing ring is arranged between the first convex edge and the second convex edge, and a second part for accommodating the sealing ring is arranged between the second convex edge and the side wall, so that the sealing ring can be supported on the second convex edge for sealing the bottom box and the cover. By arranging the two parts of the sealing ring in the first accommodating groove and the second accommodating groove respectively, the sealing ring can be closely attached between the bottom box and the cover, the close sealing between the cover and the bottom box can be ensured when the packaging box inner container is in a closed state, air, moisture and other pollutants are prevented from entering, and the quality and hygiene of the packaging box inner container are protected.

Description

Technical Field

[0001] This application relates to the field of cosmetic packaging technology, and in particular to an inner liner for a coating product packaging box and a coating product packaging box. Background Technology

[0002] The airtightness of the cushion compact's inner layer is crucial for ensuring product quality and user experience. A well-sealed inner layer effectively isolates the product from the external environment, maintaining internal cleanliness and preventing bacterial growth. However, if the inner layer is poorly sealed, bacteria, dust, and other microorganisms in the air can easily enter the foundation. Microorganisms thrive in warm, humid environments, leading to rapid reproduction. Long-term use of such cushion products can pose a potential threat to the user's skin health. Summary of the Invention

[0003] In view of the above-mentioned problems in the prior art, the purpose of this application is to solve the defect of poor sealing performance of the air cushion liner in the prior art.

[0004] To address the aforementioned issues, this application provides an inner liner for a coating product packaging box and a coating product packaging box, comprising a bottom box, a sealing ring, and a cover. The cover is used to cover the bottom box. The bottom box has a side wall, and a first protruding edge and a second protruding edge are provided inside the bottom box. Both the first protruding edge and the second protruding edge are arranged parallel to the side wall, and the second protruding edge is disposed between the first protruding edge and the side wall.

[0005] The first and second protruding edges are used to accommodate a first portion of the sealing ring, and the second protruding edge and the sidewall are used to accommodate a second portion of the sealing ring, so that the sealing ring can be supported on the second protruding edge for sealing the bottom box and the cover.

[0006] Preferably, the upper surface of the sealing ring is provided with a mesh fabric, and along the setting direction of the sidewall, the first protruding edge is higher than the second protruding edge, and the first protruding edge is used to support the mesh fabric.

[0007] Preferably, the bottom box has a bottom surface, and along the arrangement direction of the sidewalls, the starting point of the extension of the sidewalls is higher than the bottom surface;

[0008] The starting point of the first protrusion is not higher than the starting point of the sidewall.

[0009] Preferably, along the setting direction of the sidewall, the cross-sectional shape of the sealing ring is U-shaped, and the interlayer of the sealing ring can be fitted onto the second protruding edge;

[0010] A filler is provided between the interlayer of the sealing ring and the second protrusion to reduce the gap between the sealing ring and the second protrusion.

[0011] Preferably, along the orientation of the sidewall, the distance between the first protruding edge and the second protruding edge is less than the distance between the second protruding edge and the sidewall.

[0012] Preferably, the inner liner further includes a sealing ring sandwiched between the sealing ring and the side wall to seal the gap between the sealing ring and the bottom box.

[0013] Preferably, the cover has a third protruding edge on the side facing the bottom box. The third protruding edge is arranged parallel to the side wall and can be embedded between the sealing ring and the side wall to seal the gap between the cover and the bottom box.

[0014] Preferably, the second protrusion is disposed around the first protrusion and the sidewall.

[0015] Preferably, the sealing ring has a plurality of protrusions at its bottom end facing the first convex edge, and the plurality of protrusions are arranged sequentially at intervals along the circumferential direction of the sealing ring to provide shock absorption when the mesh fabric is assembled on the upper surface of the sealing ring.

[0016] A coating product packaging box, comprising the coating product packaging box liner described in any of the above claims.

[0017] Based on the above technical solution, the coating product packaging box liner and coating product packaging box described in this application have the following beneficial effects:

[0018] By placing the two parts of the sealing ring respectively in the first and second receiving grooves, the sealing ring can fit tightly between the bottom box and the lid. This ensures a tight seal between the lid and the bottom box when the inner liner is closed, preventing air, moisture, and other contaminants from entering and protecting the quality and hygiene of the inner liner. Furthermore, the first and second raised edges enhance the structural strength of the bottom box, thereby increasing the reliability of the sealing ring's placement. This ensures that the sealing ring guarantees both the airtightness and durability of the inner liner. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a cross-sectional view of the inner liner of the coating packaging box provided in the embodiments of this application.

[0021] Figure 2 yes Figure 1 A magnified view of section A in the image.

[0022] Figure 3 This is a top view of the inner liner of the coating packaging box provided in the embodiments of this application.

[0023] Figure 4 yes Figure 3 Sectional view at point BB.

[0024] Figure 5 This is an exploded view of the inner liner of the coating packaging box provided in the embodiments of this application.

[0025] Figure 6 This is a cross-sectional view of the cap provided in an embodiment of this application.

[0026] Figure 7 This is a perspective view of the cover provided in the embodiment of this application from a first-view perspective.

[0027] Figure 8 This is a perspective view of the cover provided in the embodiment of this application from a second perspective.

[0028] Figure 9 This is a perspective view of the sealing ring provided in the embodiment of this application.

[0029] Figure 10 This is a cross-sectional view of the sealing ring provided in an embodiment of this application.

[0030] Figure 11 This is a perspective view of the sealing ring provided in the embodiment of this application.

[0031] Figure 12 This is a cross-sectional view of the sealing ring provided in an embodiment of this application.

[0032] Figure 13 This is a perspective view of the base box provided in the embodiment of this application from a first-view perspective.

[0033] Figure 14 This is a perspective view of the base box provided in the embodiment of this application from a second perspective.

[0034] Figure 15 This is a cross-sectional view of the bottom box provided in the embodiment of this application.

[0035] Figure 16 These are simplified schematic diagrams of five different structures of the bottom box provided in the embodiments of this application.

[0036] The attached figures are labeled as follows: inner liner of the coating packaging box 100, cover 11, third raised edge 111, closing protrusion 112, storage slot 113, handle 114, hinge protrusion 115; sealing ring 12, filler 121, protrusion 122, first protruding section 123, second protruding section 124; bottom box 13, first raised edge 131, second raised edge 132, side wall 133, notch 1331, receiving cavity 134, first receiving groove 135, second receiving groove 136, slot 137, hinge seat 138, connecting groove 139; sealing ring 14, guide slope 141, protruding structure 142, clearance groove 143, sealing rib 144. Detailed Implementation

[0037] 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.

[0038] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0039] like Figures 1-16 As shown in the figure, this application discloses a coating product packaging box inner liner 100, which can also be referred to as a replacement core. The coating product packaging box inner liner 100 includes a bottom box 13, a sealing ring 12, and a cover 11.

[0040] The cover 11 is used to cover the bottom box 13. The bottom box 13 has a side wall 133. The bottom box 13 has a first protruding edge 131 and a second protruding edge 132 inside. The first protruding edge 131 and the second protruding edge 132 are both arranged parallel to the side wall 133. The second protruding edge 132 is disposed between the first protruding edge 131 and the side wall 133.

[0041] The first protruding edge 131 and the second protruding edge 132 are used to accommodate a first portion of the sealing ring 12, and the second protruding edge 132 and the side wall 133 are used to accommodate a second portion of the sealing ring 12, so that the sealing ring 12 can be supported on the second protruding edge 132 for sealing the bottom box 13 and the cover 11.

[0042] It is understood that "the cover 11 is used to cover the bottom box 13" means that the cover 11 and the bottom box 13 have two modes: one is that the cover 11 closes the bottom box 13, and the other is that the cover 11 opens the bottom box 13.

[0043] In this embodiment of the application, the first protruding edge 131 and the bottom surface of the bottom box 13 form a receiving cavity 134, which is used to store materials. The first protruding edge 131 and the second protruding edge 132 form a first receiving groove 135, and the second protruding edge 132 and the side wall 133 form a second receiving groove 136. The two ends of the sealing ring 12 are respectively disposed in the first receiving groove 135 and the second receiving groove 136.

[0044] Therefore, based on the above structural form, by respectively setting the two parts of the sealing ring 12 in the first receiving groove 135 and the second receiving groove 136, the sealing ring 12 can be tightly fitted between the bottom box 13 and the cover 11. This ensures a tight seal between the cover 11 and the bottom box 13 when the inner liner 100 of the packaging box is in the closed state, preventing air, moisture, and other contaminants from entering and protecting the quality and hygiene of the inner liner 100. Furthermore, the first protruding edge 131 and the second protruding edge 132 enhance the structural strength of the bottom box 13, thereby increasing the reliability of the sealing ring 12 on the bottom box 13. This ensures that the sealing ring 12 guarantees both the sealing performance and the durability of the inner liner 100.

[0045] Furthermore, in this embodiment, the sealing ring 12 is composed of two different materials: polyethylene terephthalate (PET) and thermoplastic elastomer (TPE), while the sealing ring 14 is made of nitrile rubber (NBR) or silicone. PET is a thermoplastic polyester with good mechanical properties, heat resistance, and chemical resistance. It is transparent, tough, and not easily broken, thus providing structural strength and shape stability in the sealing ring 12. TPE is a thermoplastic plastic with rubber elasticity, combining the processing properties of plastics and the elasticity of rubber. TPE is soft, easy to mold, and has good sealing performance and impact resistance. Therefore, in the sealing ring 12, it not only provides a sealing effect but also increases the fit with the bottom box 13.

[0046] As a preferred embodiment, the two-color sealing ring 12 in this application is an integrally molded structure, manufactured by co-injection molding or two-color injection molding process to ensure that the two materials are tightly bonded.

[0047] Therefore, the sealing ring 12 with the above-described structure ensures that it can achieve its sealing effect with the cover 11 while also ensuring the connection strength between the sealing ring 12 and the bottom box 13. This ensures that the sealing ring 12 will not detach from the bottom box 13 when the cover 11 is opened or closed, thus maintaining the integrity of the inner liner 100 of the coated product packaging box. In summary, the above design achieves the dual function of sealing and connection, solving the problem that the previous sealing ring 12 could not simultaneously guarantee sealing and structural strength. Specifically, in order to ensure the sealing effect of the sealing ring 12, the existing technology generally reduces its own structural strength by making the sealing ring 12 softer. However, a softer sealing ring 12 will have the defect of not being able to fit on the base, and is prone to problems such as shaking, sliding, deformation, and displacement. In order to ensure the structural strength of the connection between the sealing ring 12 and other components, its own hardness is generally increased, making the sealing ring 12 harder. However, a harder sealing ring 12 will greatly reduce its sealing performance with the cover 11. Therefore, the sealing ring 12 with the above-mentioned structure adopted in this application can be regarded as an independent entity, while ensuring its linkage and coordination with the other components in the inner liner 100 of the packaging box. It ensures the compression of the sealing ring 12 by the cover 11 and the snap-fit ​​between the bottom box 13 and the sealing ring 12. Overall, it achieves the triple effect of sealing, compression and fixation of the sealing ring 12, ensuring that the sealing ring 12 not only meets the structural strength of its connection with the bottom box 13, but also provides a good sealing effect.

[0048] As a preferred embodiment, the bottom box 13 is made of polyethylene terephthalate (PET).

[0049] In this embodiment, the bottom box 13 is a square with an arc-shaped structure at its top corner, so the shape of the sealing ring 12 is the same as the shape of the bottom box 13. The sealing ring 12 has multiple gates, each located at one of the top corners; preferably, there are two gates located diagonally opposite each other on the sealing ring 12, with the gates penetrating from the first part of the sealing ring 12 to the second part. The gate of the bottom box 13 is located at the center of the bottom end face of the bottom box 13.

[0050] In this embodiment, the side of the cover 11 away from the bottom box 13 has a storage slot 113 for storing cosmetic tools, such as powder puffs and brushes. Furthermore, a handle 114 is provided on the outer edge of the storage slot 113 for the user to open and close the cover 11.

[0051] Preferably, a hinge protrusion 15 is provided on the opposite side of the hand buckle 114, and a hinge seat 138 is provided on the bottom box 13 at the position corresponding to the hinge protrusion 115. The hinge protrusion 115 and the hinge seat 138 are adapted to accommodate cylindrical objects such as pins, thereby realizing the rotatable connection between the cover 11 and the bottom box 13. The assembly method includes at least the following two: First, the pin can penetrate the hinge protrusion 115 and the hinge seat 138, in which case one pin is sufficient; Second, the pin does not penetrate the hinge protrusion 115 and the hinge seat 138, in which case two pins are required to be set opposite each other.

[0052] In a preferred embodiment, the upper surface of the sealing ring 12 is provided with a mesh fabric. Along the setting direction of the side wall 133, the first protruding edge 131 is higher than the second protruding edge 132, and the first protruding edge 131 is used to support the mesh fabric.

[0053] In this embodiment, the upper surface of the sealing ring 12 is used to weld aluminum foil so that a mesh can be assembled; the mesh is provided to ensure that the material can be evenly dipped during use.

[0054] Therefore, based on the above structural form, by designing the first protruding edge 131 to be higher than the second protruding edge 132, the mesh can be kept fixed on the sealing ring 12, and the mesh can be easily pressed during use to achieve material dipping, and the mesh is not easily deformed during use.

[0055] In a preferred embodiment, the bottom box 13 has a bottom surface, and along the setting direction of the side wall 133, the extension starting point of the side wall 133 is higher than the bottom surface; the extension starting point of the first protruding edge 131 is not higher than the extension starting point of the side wall 133.

[0056] It is understood that the extension starting point of the first convex edge 131 is less than or equal to the extension starting point of the sidewall 133, that is, the extension starting point of the first convex edge 131 includes at least the following five embodiments, which can be referred to Figure 16 :

[0057] The first type, such as Figure 16 As shown in ①, the side wall 133 of the bottom box 13 has a stepped structure relative to the bottom surface. The starting point of the extension of the first protruding edge 131 and the bottom surface of the bottom box 13 are at the same horizontal height. The starting point of the extension of the second protruding edge 132 is located on the stepped structure. The starting point of the extension of the second protruding edge 132 and the starting point of the extension of the side wall 133 are at the same horizontal height.

[0058] The second type, such as Figure 16 As shown in ②, the side wall 133 of the bottom box 13 has a stepped structure relative to the bottom surface. The starting point of the extension of the first protruding edge 131 is located on the stepped structure. The starting points of the extension of the first protruding edge 131 and the second protruding edge 132 are both at the same horizontal height as the starting point of the extension of the side wall 133.

[0059] The third type, such as Figure 16 As shown in ③, the side wall 133 of the bottom box 13 is a sloping structure relative to the bottom surface. The starting point of the extension of the first convex edge 131 is located on the bottom surface of the bottom box 13, and the starting point of the extension of the second convex edge 132 is located at the starting point of the sloping structure. That is, the starting point of the extension of the second convex edge 132 and the starting point of the extension of the first convex edge 131 are located at the same horizontal height.

[0060] The fourth type, such as Figure 16 As shown in ④, the side wall 133 of the bottom box 13 is an inclined structure relative to the bottom surface. The starting point of the extension of the first protruding edge 131 is located at the starting point of the inclined structure, and the starting point of the extension of the second protruding edge 132 is located on the inclined structure, and the height does not exceed the starting point of the extension of the side wall 133. That is, along the setting direction of the side wall 133, the starting point of the extension of the first protruding edge 131 is lower than the starting point of the extension of the second protruding edge 132, and the starting point of the extension of the second protruding edge 132 is lower than the starting point of the extension of the side wall 133.

[0061] The fifth type, such as Figure 16 As shown in ⑤, the side wall 133 of the bottom box 13 is a sloping structure relative to the bottom surface. The starting point of the extension of the first protruding edge 131 is located on the sloping structure, and the starting point of the extension of the second protruding edge 132 is also located on the sloping structure. That is, along the setting direction of the side wall 133, the starting point of the extension of the first protruding edge 131 is lower than the starting point of the extension of the second protruding edge 132, and the starting point of the extension of the second protruding edge 132 is lower than the starting point of the extension of the side wall 133.

[0062] In summary, this application includes the above five embodiments of the bottom box 13. Regardless of where the extension starting point of the first protruding edge 131 and the second protruding edge 132 is located, the first protruding edge 131 and the second protruding edge 132 both extend toward one side of the cover 11, and their extension directions are both parallel to the setting direction of the side wall 133.

[0063] Preferably, when the first protruding edge 131 adopts the first, third, fourth and fifth design methods, the extension starting point of the first protruding edge 131 can be limited to have a height difference of 2-5mm relative to the extension starting point of the sidewall 133.

[0064] In this embodiment, the first implementation method is used. In other embodiments, the method can be set as needed based on the material condition, sealing requirements and process requirements of the inner liner 100 of the packaging box.

[0065] Therefore, based on the above structural form, the starting point of the extension of the first protruding edge 131 is close to or the same as the bottom surface of the bottom box 13, or close to or the same as the starting point of the extension of the side wall 133, which can simplify the manufacturing process of the bottom box 13 and reduce production costs; the starting point of the extension of the first protruding edge 131 is higher than the ground and lower than the starting point of the extension of the side wall 133, which can maximize the internal space and improve the space utilization of the bottom box 13 without sacrificing the stability of the packaging box.

[0066] like Figure 10 As shown, along the setting direction of the sidewall 133, the cross-sectional shape of the sealing ring 12 is U-shaped, and the interlayer of the sealing ring 12 can be fitted onto the second protruding edge 132;

[0067] A filler 121 is provided between the interlayer of the sealing ring 12 and the second protrusion 132 to reduce the gap between the sealing ring 12 and the second protrusion 132.

[0068] In this embodiment, the filler 121 is made of soft rubber.

[0069] In this embodiment, the filler 121 and the second protruding edge 132 are in an interference fit, specifically an upper and lower abutting interference fit.

[0070] Therefore, based on the above structural form, the design of the U-shaped sealing ring 12 can better adapt to the shape of the second convex edge 132. Combined with the interference fit of the filler 121, this effectively reduces gaps, thereby improving sealing performance. Furthermore, the design of the filler 121 ensures the stable position of the sealing ring 12 within the bottom box 13, preventing displacement even during transportation or use. In addition, the soft rubber filler 121 can absorb and disperse external forces, reducing wear between the sealing ring 12 and the second convex edge 132, and extending the service life of the inner liner 100 of the packaging box.

[0071] like Figure 15 As shown, along the setting direction of the sidewall 133, the distance between the first protruding edge 131 and the second protruding edge 132 is less than the distance between the second protruding edge 132 and the sidewall 133.

[0072] It is understandable that, along the setting direction of the sidewall 133, the cross-sectional dimension of the first receiving groove 135 is smaller than the cross-sectional dimension of the second receiving groove 136. For example, the cross-sectional dimension of the first receiving groove 135 is 3mm, and the cross-sectional dimension of the second receiving groove 136 is 5mm.

[0073] Therefore, based on the above structural form, by adjusting the distance between the first protruding edge 131, the second protruding edge 132, and the side wall 133, the placement and fixation of the sealing ring 12 can be optimized, making the sealing structure more compact and effective.

[0074] like Figure 1 , Figure 3 and Figure 11 As shown, the inner liner also includes a sealing ring 14, which is sandwiched between the sealing ring 12 and the side wall 133 to seal the gap between the sealing ring 12 and the bottom box 13.

[0075] In a preferred embodiment, the sealing ring 12 has a first protrusion 123 on the side facing the sealing ring 14, and the sealing ring 14 has a recessed groove 141 corresponding to the first protrusion 123 on the side facing the sealing ring 12. The first protrusion 123 and the recessed groove 141 are adapted to strengthen the tightness of the sealing ring 14 on the sealing ring 12.

[0076] Furthermore, the sealing ring 12 is provided with a second protruding section 124 on the side facing the sealing ring 14. The first protruding section 123 and the second protruding section 124 are arranged parallel to each other. The second protruding section 124 abuts against the bottom end of the sealing ring 14 and is used to engage with the fixing protrusion (not shown in the figure) of the inner ring to fix the sealing ring 12 to the base box 13. It can be understood that the outer diameter of the second protruding section 124 is larger than the outer diameter of the first protruding section 123.

[0077] Therefore, based on the above structural form, the design of the first protruding section 123 and the recessed groove 141 that are adapted to each other, as well as the design of the second protruding section 124, both increase the stability of the sealing ring 12 on the base, prevent the sealing ring 12 from shifting during use, and realize the dual function of fixing the sealing ring 12 relative to the bottom box 13.

[0078] like Figure 6 As shown, the cover 11 has a third protruding edge 111 on the side facing the bottom box 13. The third protruding edge 111 is arranged parallel to the side wall 133. The third protruding edge 111 can be embedded between the sealing ring 14 and the side wall 133 to seal the gap between the cover 11 and the bottom box 13.

[0079] By setting a third protruding edge 111 on the cap 11 and interacting with the sealing ring 14, a double sealing effect is achieved between the cap 11 and the sealing ring 12 on the inner liner 100 of the packaging box, which better enhances the sealing performance of the packaging and ensures the hygiene of the materials.

[0080] In this embodiment, the inner side of the third protrusion 111 is press-fitted with the sealing ring 14.

[0081] like Figure 8 and Figure 13 As shown, the cover 11 has a closing protrusion 112 on the side facing the bottom box 13, that is, the closing protrusion 112 is located on the outer periphery of the third protrusion 111. The bottom box 13 has a slot 137 on the inner side of the side wall 133 corresponding to the position of the closing protrusion 112, so as to be able to fit with the closing protrusion 112 and realize the snap-fit ​​between the cover 11 and the bottom box 13.

[0082] In a preferred embodiment, the bottom end of the sealing ring 14 is provided with a guide slope 141, which is used to guide the assembly of the sealing ring 14, providing guidance for the assembly of the sealing ring 14 and improving assembly efficiency.

[0083] like Figure 12 As shown, the sealing ring 14 has a protruding structure 142 at the end facing the third protruding edge 111. The protruding structure 142 is used to contact the third protruding edge 111 to form a sealing point.

[0084] Along the extending direction of the third convex edge 111, a relief groove 143 is provided below the protruding structure 142. The relief groove 143 is used to accommodate the protruding structure 142 that is deformed by the third convex edge 111. That is, the relief groove 143 can accommodate the deformation of the protruding structure 142 when it is squeezed by the third convex edge 111, so as to avoid damage to the protruding structure 142 due to excessive compression and extend the service life of the sealing ring 14.

[0085] like Figure 12 As shown, a sealing rib 144 is provided on the side of the sealing ring 14 facing the side wall. The sealing rib 144 is used to press against the side wall 133 to achieve the limiting and fixing of the sealing ring 14.

[0086] As a preferred embodiment, the inner diameter of the sealing ring 14 is smaller than the inner diameter of the sealing ring 12. The purpose of this arrangement is that when the sealing ring 14 is fitted onto the sealing ring 12, it can always provide a compressive force toward the sealing ring 12, that is, always fix the sealing ring 12 on the second protrusion 132 to form an airtight effect.

[0087] like Figure 13 and Figure 15 As shown, the second convex edge 132 is disposed around the first convex edge 131 and the sidewall 133.

[0088] In this embodiment, the second protruding edge 132 is a continuously arranged annular structure; in other embodiments, the second protruding edge 132 may also be an intermittently arranged annular structure, that is, the annular structure is spaced apart in some parts.

[0089] It is understandable that both the first receiving groove 135 and the second receiving groove 136 are annular structures to better accommodate the two ends of the sealing ring 12 and ensure that the sealing ring 12 is stably fixed in the bottom box 13. Furthermore, the setting of the second protrusion 132 can also make the sealing ring 12 fit the bottom box 13 better, thereby enhancing the connection by increasing the contact area between the sealing ring 12 and the second protrusion 132. This not only improves the sealing effect but also ensures the overall stability of the packaging box inner liner 100 and prevents the sealing ring 12 from deforming.

[0090] In a preferred embodiment, the sealing ring 12 has a plurality of protrusions 122 on the bottom end facing the first convex edge 131. The plurality of protrusions 122 are arranged sequentially at intervals along the circumferential direction of the sealing ring 12 to play a shock-absorbing role when the mesh fabric is assembled on the upper surface of the sealing ring 12.

[0091] It is understood that the protrusions 122 are arranged sequentially at intervals along the circumferential direction of the sealing ring 12, that is, they are equidistant or distributed at specific intervals on the circumference of the sealing ring 12.

[0092] Therefore, based on the above structural form, when the mesh fabric is assembled on the upper surface of the sealing ring 12, the protrusions 122 can play a shock-absorbing role. When the mesh fabric is subjected to external force or vibration, the protrusions 122 can absorb and disperse some of the energy, reducing the impact on the mesh fabric and the sealing ring 12, thereby protecting the sealing structure from damage. The protrusions 122 can also increase the friction between the sealing ring 12 and the first protruding edge 131, allowing the sealing ring 12 to be more firmly fixed to the base box 13, preventing displacement during use.

[0093] This application also discloses a coating product packaging box, which includes an outer shell and the aforementioned coating product packaging box inner liner 100. The coating product packaging box inner liner 100 is disposed in the outer shell. After the material in the coating product packaging box inner liner 100 is used up, a new coating product packaging box inner liner 100 filled with material can be replaced for reuse by the user.

[0094] As a preferred implementation method, such as Figure 13As shown, a connecting groove 139 is provided at the bottom of the outer periphery of the bottom box 13. There are multiple connecting grooves 139, which are arranged in sequence at intervals, preferably three, and are respectively provided on the three sides of the bottom box 13 excluding the hinge seat, so as to realize the replacement function of the inner liner 100 of the coating product packaging box, so as to be compatible with the corresponding structure provided on the inner bottom of the outer shell.

[0095] As a preferred implementation method, such as Figure 13 As shown, notches 1331 are provided at the four top corners of the bottom box 13. The notches 1331 are used to abut against the inner bottom of the outer shell to achieve a stable fit between the bottom box 13 and the inner bottom, avoiding the introduction of a third component, so as to achieve stable fixation between the bottom box 13 and the inner bottom.

[0096] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A liner for a coating product packaging box, characterized in that, It includes a base box (13), a sealing ring (12), and a cover (11). The cover (11) is used to cover the base box (13). The base box (13) has a side wall (133). The base box (13) is provided with a first protruding edge (131) and a second protruding edge (132). The first protruding edge (131) and the second protruding edge (132) are both arranged parallel to the side wall (133). The second protruding edge (132) is disposed between the first protruding edge (131) and the side wall (133). The first protruding edge (131) and the second protruding edge (132) are used to accommodate a first portion of the sealing ring (12), and the second protruding edge (132) and the side wall (133) are used to accommodate a second portion of the sealing ring (12), so that the sealing ring (12) can be supported on the second protruding edge (132) for sealing the bottom box (13) and the cover (11).

2. The inner liner of the coating product packaging box according to claim 1, characterized in that, The upper surface of the sealing ring (12) is provided with a mesh fabric. Along the setting direction of the side wall (133), the first protruding edge (131) is higher than the second protruding edge (132), and the first protruding edge (131) is used to support the mesh fabric.

3. The inner liner of the coating product packaging box according to claim 1, characterized in that, The bottom box (13) has a bottom surface, and along the setting direction of the side wall (133), the starting point of the extension of the side wall (133) is higher than the bottom surface; The starting point of the first protrusion (131) is not higher than the starting point of the sidewall (133).

4. The inner liner of the coating product packaging box according to claim 1, characterized in that, Along the setting direction of the sidewall (133), the cross-sectional shape of the sealing ring (12) is U-shaped, and the interlayer of the sealing ring (12) can be fitted onto the second protruding edge (132); A filler (121) is provided between the interlayer of the sealing ring (12) and the second protrusion (132) to reduce the gap between the sealing ring (12) and the second protrusion (132).

5. The inner liner of the coating product packaging box according to claim 1, characterized in that, Along the setting direction of the sidewall (133), the distance between the first protruding edge (131) and the second protruding edge (132) is less than the distance between the second protruding edge (132) and the sidewall (133).

6. The inner liner of the coating product packaging box according to claim 1, characterized in that, The inner liner also includes a sealing ring (14), which is sandwiched between the sealing ring (12) and the side wall (133) to seal the gap between the sealing ring (12) and the bottom box (13).

7. The inner liner of the coating product packaging box according to claim 6, characterized in that, The cover (11) has a third protruding edge (111) on the side facing the bottom box (13). The third protruding edge (111) is arranged parallel to the side wall (133). The third protruding edge (111) can be embedded between the sealing ring (14) and the side wall (133) to seal the gap between the cover (11) and the bottom box (13).

8. The inner liner of the coating product packaging box according to claim 1, characterized in that, The second protruding edge (132) is disposed around the first protruding edge (131) and the sidewall (133).

9. The inner liner of the coating product packaging box according to claim 1 or 8, characterized in that, The sealing ring (12) has a plurality of protrusions (122) at its bottom end facing the first protrusion (131). The plurality of protrusions (122) are arranged sequentially at intervals along the circumferential direction of the sealing ring (12) to provide shock absorption when the mesh is assembled on the upper surface of the sealing ring (12).

10. A packaging box for a coating product, characterized in that, It includes the inner liner (100) of the coating packaging box as described in any one of claims 1-9.

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