Aluminum plastic combination cover

Abstract

The utility model discloses an aluminium -plastic combined cover, including aluminium cover ring, plastic body, the outer peripheral edge of plastic body and aluminium cover ring inner peripheral edge are together through injection moulding fixed link, be equipped with the turnover cover on the plastic body, the inner end surface of turnover cover is equipped with a circle upper seal convex part, be equipped with a circle lower seal convex part on the plastic body, be equipped with a circle tear groove on the plastic body in the lower seal convex part inner peripheral edge encircles, be equipped with the handle on the plastic body in the tear groove encloses, tear open part plastic body to form the opening through the handle of lifting and drawing along the tear groove, the turnover cover is close to the plastic body to make upper seal convex part and lower seal convex part cooperate to seal the opening. The utility model discloses an aluminium cover ring and the tank body fixed link, can form the opening to pour out material conveniently, also can carry out secondary sealing, and the whole sealing property of the packaging can that forms is good, can package solid material also can package liquid material, and the scope of adaptation is wide.

Description

Technical Field

[0001] This utility model relates to the field of packaging container manufacturing technology, and in particular to an aluminum-plastic composite cap. Background Technology

[0002] Aluminum cans are a common packaging container, often used to package beer, beverages, and other similar products. To open one, you need to pull the aluminum handle to tear open a portion of the lid, creating an opening before you can open the can and pour out the contents. However, once the lid is opened, it cannot be resealed, leaving the contents exposed to air and susceptible to contamination and damage from the external environment.

[0003] To achieve secondary sealing, a Chinese utility model patent with patent number ZL202320830609.6 and title "An Aluminum-Plastic Composite Cover" was published on March 4, 2025. It includes an aluminum cover ring and a circular plastic cover plate. The circular plastic cover plate has a downward-extending side edge with an inwardly protruding connecting portion at its lower end. One side of the aluminum cover ring has a winding portion that rolls and seals with the can opening, and the other side has a flipping portion that clamps the connecting portion. The upper part of the circular plastic cover plate has at least one flipable cover body. Each flipable cover body has a mating structure with the upper part of the circular plastic cover plate that allows them to open or close together. The upper part of the circular plastic cover plate has a through hole corresponding to the flipable cover body. When the flipable cover body is closed to the upper part of the circular plastic cover plate, it covers the through hole. When the flipable cover body is opened to the upper part of the circular plastic cover plate, the through hole communicates with the outside. This invention can be rolled and sealed with the opening of an aluminum can, and the cap is easy to open, allowing the can to be opened or closed multiple times for repeated sealing. While this composite cap can achieve secondary sealing, its overall sealing performance needs improvement. It is more suitable for packaging granular or other solid materials, but not for liquid materials, thus limiting its application. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an aluminum-plastic composite cap, in which the aluminum cap ring is fixed to the can body, which can not only easily form an opening to pour out materials, but also perform secondary sealing. The resulting packaging can has good overall sealing performance and can be used to package both solid and liquid materials, with a wide range of applications.

[0005] To achieve the above objectives, the technical solution of this utility model is: an aluminum-plastic composite cover, including an aluminum cover ring and a plastic body. The outer peripheral edge of the plastic body and the inner peripheral edge of the aluminum cover ring are fixed together by injection molding. The plastic body is provided with a flip-up cover. The inner end face of the flip-up cover is provided with an upper sealing protrusion. The plastic body is provided with a lower sealing protrusion.

[0006] A tear groove is provided on the plastic body surrounding the lower sealing protrusion. A handle is provided on the plastic body surrounding the tear groove. By pulling the handle, a portion of the plastic body can be torn open along the tear groove to form an opening. The flip-up cover moves towards the plastic body so that the upper sealing protrusion and the lower sealing protrusion cooperate to seal the opening.

[0007] In a further improvement, the inner circumferential edge of the aluminum cap ring is provided with a bent portion, which is embedded in the plastic body. This makes the aluminum cap ring and the plastic body more firmly bonded after injection molding.

[0008] In a further improvement, the inner side of the upper sealing protrusion is provided with a first engaging protrusion, and the outer side of the lower sealing protrusion is provided with a first engaging groove. After the cover is flipped over and brought closer to the plastic body, the first engaging protrusion can engage with the first engaging groove. This prevents the cover from being accidentally opened due to external vibrations or other factors, ensuring the reliability of the secondary seal.

[0009] In a further improvement, the plastic body within the tear groove is provided with an embedding groove for the handle to be inserted. The inner side of the embedding groove has at least one second engaging protrusion, and the handle has a corresponding second engaging groove. After the handle is inserted into the embedding groove, each second engaging protrusion can mate with one second engaging groove. This ensures that the handle is embedded in the embedding groove, guaranteeing a reliable seal.

[0010] Preferably, the flip-up cover is flip-connected to the plastic body via a first connecting part; the handle is flip-connected to the plastic body via a second connecting part.

[0011] As a further improvement, the flip-up cover has a sliding protrusion around its outer perimeter, making it easy to unfold.

[0012] As a further improvement, the handle is provided with a toggle groove. This allows for easy pulling of the handle to tear open a portion of the plastic body, creating an opening.

[0013] A further improvement is made: the outer periphery of the aluminum cap ring is provided with a winding portion, which is wound around the can body for sealing. This facilitates a secure connection and seal with the can body.

[0014] Preferably, the tear groove includes an upper tear groove on the upper end face of the plastic body and a lower tear groove on the lower end face of the plastic body, with the upper and lower tear grooves corresponding to each other. This makes it easier to tear open part of the plastic body to form an opening.

[0015] Preferably, the width of the upper tear groove cross-section opening is the same from top to bottom, while the width of the lower tear groove cross-section opening gradually decreases from bottom to top. This facilitates injection molding demolding and also makes it easier to tear.

[0016] Before the plastic body can be torn open along the tear groove by pulling the handle to form an opening, the lid and the can body are fixed together to form a packaging can, resulting in good overall sealing. It can package both solid and liquid materials, making it suitable for a wide range of applications. The plastic body can be easily torn open along the tear groove by pulling the handle to form an opening for pouring out the material. The opening can be sealed by flipping the lid against the plastic body so that the upper and lower sealing protrusions can cooperate to form a secondary seal. This makes it convenient to use and prevents the material inside the can from being exposed to the air and damaged by external environmental pollution. Attached Figure Description

[0017] Figure 1 This is a top-view perspective view of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 yes Figure 2 AA section view;

[0020] Figure 4 yes Figure 3 Enlarged view of point B;

[0021] Figure 5 This is a bottom-view perspective view of this utility model;

[0022] Figure 6 This is a top-view perspective view of the flip-top cover of this utility model with an unfolded lifting handle;

[0023] Figure 7 This is a top perspective view of the flip-top cover of this utility model unfolding and tearing open part of the plastic body along the tear groove to form an opening. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figures 1 to 7 As shown, an aluminum-plastic composite cover includes an aluminum cover ring 1 and a plastic body 2. The outer peripheral edge of the plastic body 2 is fixedly connected to the inner peripheral edge of the aluminum cover ring 1 by injection molding. The plastic body 2 is provided with a flip-up cover 3, which is flip-up connected to the plastic body 2 through a first connecting part 31. The inner end face of the flip-up cover 3 is provided with an upper sealing protrusion 32, and the plastic body 2 is provided with a lower sealing protrusion 21.

[0026] A tear groove 22 is provided on the plastic body 2 surrounded by the lower sealing protrusion 21. A handle 4 is provided on the plastic body 2 surrounded by the tear groove 22. The handle 4 is rotatably connected to the plastic body 2 through the second connecting part 41. By pulling the handle 4 along the tear groove 22, part of the plastic body 2 can be torn to form an opening 23. The rotatable cover 3 moves towards the plastic body 2 so that the upper sealing protrusion 32 and the lower sealing protrusion 21 cooperate to seal the opening 23.

[0027] The inner circumferential edge of the aluminum cap ring 1 is provided with a bent portion 11, which is embedded in the plastic body 2. This improves the reliability of the connection between the aluminum cap ring 1 and the plastic body 2.

[0028] The upper sealing protrusion 32 has a first engaging protrusion 321 on its inner side, and the lower sealing protrusion 21 has a first engaging groove 211 on its outer side. After the flip-top cover 3 is brought close to the plastic body 2, the first engaging protrusion 321 can engage with the first engaging groove 211 to prevent the flip-top cover 3 from being opened accidentally.

[0029] The plastic body 2 within the tear groove 22 is provided with an embedding groove 24 for the handle 4 to be embedded in. The inner side of the embedding groove 24 is provided with two second engaging protrusions 241, and the handle 4 is provided with two corresponding second engaging grooves 42. After the handle 4 is embedded in the embedding groove 24, each second engaging protrusion 241 can cooperate with one second engaging groove 42, ensuring that the handle 4 is reliably embedded in the embedding groove 24.

[0030] The flip-top cover 3 has a sliding protrusion 33 on its outer periphery to facilitate unfolding the flip-top cover 3.

[0031] The handle 4 is provided with a toggle groove 43 to facilitate lifting the handle 4.

[0032] The outer periphery of the aluminum cap ring 1 is provided with a winding portion 12, which is wound and sealed with the can body through the winding portion 12. This facilitates a secure connection and seal with the can body to form the entire can body.

[0033] The tear groove 22 includes an upper tear groove 221 located on the upper end face of the plastic body 2 and a lower tear groove 222 located on the lower end face of the plastic body 2, with the upper tear groove 221 and the lower tear groove 222 corresponding to each other.

[0034] The width of the cross-sectional opening of the upper tear groove 221 is the same from top to bottom, while the width of the cross-sectional opening of the lower tear groove 222 gradually decreases from bottom to top.

[0035] In use, after the can is filled with material, the machine causes the winding portion 12 of the aluminum cap ring 1 to wind and seal the can body, forming the entire can. When it is necessary to remove the material, such as... Figure 6As shown, first unfold the flip-up cover 3, and then tear a portion of the plastic body 2 along the tear groove 22 using the lifting handle 4 to form an opening 23, as shown. Figure 7 As shown; when a secondary seal is required, the cover 3 can be flipped up and brought closer to the plastic body 2 so that the upper sealing protrusion 32 and the lower sealing protrusion 21 can cooperate to seal the opening 23.

[0036] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An aluminum-plastic composite cap, comprising an aluminum cap ring and a plastic body, characterized in that: The outer periphery of the plastic body is fixedly connected to the inner periphery of the aluminum cover ring by injection molding. The plastic body is provided with a flip-up cover. The inner end face of the flip-up cover is provided with an upper sealing protrusion. The plastic body is provided with a lower sealing protrusion. A tear groove is provided on the plastic body surrounding the lower sealing protrusion. A handle is provided on the plastic body surrounding the tear groove. By pulling the handle, a portion of the plastic body can be torn open along the tear groove to form an opening. The flip-up cover moves towards the plastic body so that the upper sealing protrusion and the lower sealing protrusion cooperate to seal the opening.

2. The aluminum-plastic composite cover according to claim 1, characterized in that: The inner circumferential edge of the aluminum cap ring is provided with a bent portion, which is embedded in the plastic body.

3. The aluminum-plastic composite cover according to claim 1, characterized in that: The inner side of the upper sealing protrusion is provided with a first snap-fit ​​protrusion, and the outer side of the lower sealing protrusion is provided with a first snap-fit ​​groove. After the cover is flipped over and brought closer to the plastic body, the first snap-fit ​​protrusion can cooperate with the first snap-fit ​​groove.

4. The aluminum-plastic composite cover according to claim 1, characterized in that: The plastic body within the tear groove is provided with an embedding groove for the handle to be embedded in. The inner side of the embedding groove is provided with at least one second snap-fit ​​protrusion. The handle is provided with a corresponding second snap-fit ​​groove. After the handle is embedded in the embedding groove, each second snap-fit ​​protrusion can cooperate with one second snap-fit ​​groove.

5. The aluminum-plastic composite cover according to claim 1, characterized in that: The flip-up cover is flip-connected to the plastic body via a first connecting part; the handle is flip-connected to the plastic body via a second connecting part.

6. The aluminum-plastic composite cover according to claim 1, characterized in that: The flip-up cover has a movable protrusion around its outer perimeter.

7. The aluminum-plastic composite cover according to claim 1, characterized in that: The handle is provided with a toggle groove.

8. The aluminum-plastic composite cover according to claim 1, characterized in that: The outer periphery of the aluminum cap ring is provided with a winding part, which is wound and sealed with the can body.

9. An aluminum-plastic composite cover according to any one of claims 1 to 8, characterized in that: The tear groove includes an upper tear groove on the upper end face of the plastic body and a lower tear groove on the lower end face of the plastic body, with the upper tear groove and the lower tear groove corresponding to each other.

10. The aluminum-plastic composite cover according to claim 9, characterized in that: The width of the upper tear groove cross-section opening is the same from top to bottom, while the width of the lower tear groove cross-section opening gradually decreases from bottom to top.

Images