A sealing structure for aluminum foil and its production method

Abstract

This invention discloses an aluminum foil sealing structure and its manufacturing method in the field of storage can sealing. The structure includes a sealing cap body, which is annular in shape. A sealing plane is located above the central hole of the sealing cap body. A folded edge is provided below and outward from the inner hole of the sealing cap body. The folded edge forms an arc-shaped protrusion at the central hole of the sealing cap body. A steel ring is embedded at the arc-shaped protrusion where the folded edge meets the sealing plane. By providing a folded edge at the opening of the central hole of the sealing cap body and a steel ring at the folded area to increase the fold curvature, this invention ensures that the arc of the opening of the sealing structure is sufficiently large, effectively preventing hand injuries when handling food or scratches to an animal's tongue when used as a pet food storage container, thus ensuring greater safety during use.

Description

Technical Field

[0001] This invention relates to the field of storage tank sealing, specifically to an aluminum foil sealing structure and its production method. Background Technology

[0002] When storing and selling beverages, food, and pet food, packaging is necessary for storage and transactions. However, most existing canned goods use aluminum cans with thin and sharp openings, which can easily scratch the food when handled or eaten directly by animals, posing a significant safety hazard. Therefore, those skilled in the art have provided an aluminum foil sealing structure and its manufacturing method to solve the problems mentioned in the background. Summary of the Invention

[0003] The purpose of this invention is to provide an aluminum foil sealing structure and its production method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A sealing structure for aluminum foil and its manufacturing method are disclosed, comprising a sealing cap body, the sealing cap body being an annular structure, a sealing plane above the central hole of the sealing cap body, a folded edge provided below the central hole of the sealing cap body extending outward, the folded edge being an arc-shaped protrusion at the central hole of the sealing cap body, and a steel ring being pre-embedded at the arc-shaped protrusion where the folded edge meets the sealing plane.

[0006] As a further aspect of the present invention: a locking groove is stamped on the outer periphery of the bottom surface of the sealing cap, and a connecting protrusion is located on the top of the sealing cap corresponding to the locking groove.

[0007] As a further aspect of the present invention: a sealing cone surface is integrally formed between the connecting protrusion and the sealing plane, and an aluminum foil sealing paper is heat-sealed between the sealing plane and the sealing cone surface, with text instructions printed on the aluminum foil sealing paper.

[0008] A method for producing an aluminum foil sealing structure includes the following steps:

[0009] S11, Preparation of sealing cap;

[0010] S12, heat sealing of aluminum foil sealing paper.

[0011] As a further aspect of the present invention, the preparation of the sealing cap specifically includes the following steps:

[0012] S1101, Material cutting: Cutting the material according to the unfolded outer dimensions of the sealing cap body to obtain the initial sealing cap material tray;

[0013] S1102, Stamping: The initial sealing cover material obtained in step S1101 is placed into the extrusion molding die to obtain the initial shape structure after the folded edge is unfolded.

[0014] S1103, Pre-compression steel ring folding: First, fold the folding edge into a 90-degree structure, then pre-embed the steel ring at the root of the folding edge, and fold the folding edge with a folding machine to ensure that the folding edge is tightly attached to the bottom surface of the sealing cap.

[0015] As a further aspect of the present invention, the heat sealing of the aluminum foil sealing paper specifically includes the following steps:

[0016] S1201. Cut the aluminum foil sealing paper according to its dimensions to obtain the initial aluminum foil sealing paper;

[0017] S1202, Heating: The initial aluminum foil sealing paper obtained in step S1201 is adsorbed onto the sealing cone surface and sealing plane after being absorbed by a heating ring with the same shape and structure as the sealing cone surface and sealing plane, and then rapidly heated.

[0018] S1203, Pressing: Rapid hot pressing sealing is performed using a pressing ring with the same shape and structure as the sealing cone and sealing plane.

[0019] S1204. Printing: Printing text descriptions on aluminum foil sealing paper.

[0020] As a further aspect of the present invention: in step S1103, during the folding process of the folding edge, it is necessary to ensure that the sealing cone surface and the sealing plane have a support structure to prevent deformation.

[0021] As a further aspect of the present invention: the heating temperature in step S1202 is 150℃-165℃, the heating time is 2s-3s, the pressing pressure in step S1203 is 0.05Mpa-0.07Mpa, and the pressing time is 1.5s-3s.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This invention features a folded, rolled edge at the center of the sealing cap, with a steel ring at the folded area to increase the curvature. This ensures a sufficiently large arc at the opening, effectively preventing hand injuries when handling food or scratches to an animal's tongue when used as a pet food storage container, thus enhancing safety. By using a sealing plane and a sealing cone to adhere to the aluminum foil sealing paper, a localized folding and pressing effect is achieved, making it easy to quickly find the tear opening and remove the aluminum foil sealing paper, saving material. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a structural diagram of the present invention after the aluminum foil sealing paper has been removed;

[0026] Figure 3 This is a bottom view of the present invention;

[0027] Figure 4 This is a partial cross-sectional view of the present invention.

[0028] In the diagram: 1. Sealing cap body; 2. Aluminum foil sealing paper; 3. Text description; 4. Connecting protrusion; 5. Sealing cone surface; 6. Sealing plane; 7. Arc-shaped protrusion; 8. Engaging groove; 9. Folded edge; 10. Steel ring. Detailed Implementation

[0029] Please see Figures 1-4 In this embodiment of the invention, an aluminum foil sealing structure and its production method are provided, including a sealing cap body 1. The sealing cap body 1 is a ring structure. The sealing plane 6 is located above the central hole of the sealing cap body 1. A folded edge 9 is provided on the outer side below the inner hole of the sealing cap body 1. The folded edge 9 is located at the central hole of the sealing cap body 1 and is an arc-shaped protrusion 7. A steel ring 10 is pre-embedded at the arc-shaped protrusion 7 where the folded edge 9 and the sealing plane 6 meet.

[0030] By adopting the above technical solution, by setting a folded edge at the opening of the central hole of the sealing cap 1, and by setting a steel ring 10 at the folded part to increase the folding arc, it can be ensured that the arc of the opening of this sealing structure is large enough, thereby effectively preventing hand injuries when handling food, or scratching of the animal's tongue when used as a pet food storage box, ensuring greater safety during use.

[0031] The sealing cap 1 has a locking groove 8 stamped on the outer periphery of its bottom surface, and a connecting protrusion 4 is located on the top of the sealing cap 1 corresponding to the locking groove 8, which facilitates pressing the sealing cap onto the storage tank and achieving connection with the tank.

[0032] One of them has a sealing cone surface 5 integrally formed between the connecting protrusion 4 and the sealing plane 6. An aluminum foil sealing paper 2 is heat-sealed between the sealing plane 6 and the sealing cone surface 5. Text description 3 is printed on the aluminum foil sealing paper 2.

[0033] In the above technical solution, by using aluminum foil to seal the opening instead of the existing easy-open sealing structure, the operation is safer and the opening is larger. At the same time, it is more convenient to print text instructions directly on the aluminum foil.

[0034] A method for producing an aluminum foil sealing structure includes the following steps:

[0035] S11, Preparation of sealing cap;

[0036] S12, heat sealing of aluminum foil sealing paper 2.

[0037] In this embodiment, the preparation of the sealing cap specifically includes the following steps:

[0038] S1101, Material cutting: Cutting the material according to the unfolded outer dimensions of the sealing cap body 1 to obtain the initial sealing cap material tray;

[0039] S1102, Stamping: The initial sealing cover material tray obtained in step S1101 is placed into the extrusion molding die to obtain the initial shape structure of the unfolded folded edge 9.

[0040] S1103, Folding the pre-compression steel ring 10: First, fold the folding edge 9 into a 90-degree structure, then embed the steel ring 10 at the root of the folding edge 9, and fold the folding edge 9 by the folding machine to ensure that the folding edge 9 is in close contact with the bottom surface of the sealing cap body 1.

[0041] In this embodiment, the heat sealing of the aluminum foil sealing paper 2 specifically includes the following steps:

[0042] S1201. Cut the aluminum foil sealing paper 2 according to its dimensions to obtain the initial aluminum foil sealing paper 2;

[0043] S1202, Heating: The initial aluminum foil sealing paper 2 obtained in step S1201 is adsorbed onto the sealing cone 5 and sealing plane 6 after being absorbed by a heating ring with the same structure and shape as the sealing cone 5 and sealing plane 6, and then rapidly heated.

[0044] S1203, Pressing: Rapid hot pressing sealing is performed using a pressing ring with the same external structure as the sealing cone 5 and sealing plane 6;

[0045] S1204, Printing: Print text description 3 on aluminum foil sealing paper 2.

[0046] In step S1103, during the folding process of the folding edge 9, it is necessary to ensure that the sealing cone surface 5 and the sealing plane 6 have a support structure to prevent deformation.

[0047] In step S1202, the heating temperature is 150℃-165℃ and the heating time is 2s-3s. In step S1203, the pressing pressure is 0.05Mpa-0.07Mpa and the pressing time is 1.5s-3s, which can ensure that the aluminum foil sealing paper 2 and the sealing cap 1 are tightly connected.

[0048] In the above technical solution, by setting the sealing plane 6 and the sealing cone 5 to be bonded to the aluminum foil sealing paper 2 for sealing, it can be ensured that the aluminum foil sealing paper 2 forms a local fold and press when bonded to the sealing cone 5, so that the tear opening can be found quickly and easily, making it easy to tear off the aluminum foil sealing paper 2 and saving materials.

Claims

1. An aluminum foil sealing structure, comprising a sealing cap (1), characterized in that: The sealing cap body (1) has a ring structure. The sealing plane (6) is located above the central hole of the sealing cap body (1). A folded edge (9) is provided on the lower side of the inner hole of the sealing cap body (1). The folded edge (9) is located at the central hole of the sealing cap body (1) and is an arc-shaped protrusion (7). A steel ring (10) is embedded at the arc-shaped protrusion (7) where the folded edge (9) and the sealing plane (6) meet. The bottom surface of the sealing cap body (1) is stamped with a locking groove (8). The upper part of the sealing cap body (1) is a connecting protrusion (4) corresponding to the locking groove (8); the connecting protrusion (4) and the sealing plane (6) are integrally formed with a sealing cone surface (5), and aluminum foil sealing paper (2) is heat-sealed on the sealing plane (6) and the sealing cone surface (5), and text description (3) is printed on the aluminum foil sealing paper (2); the steel ring (10) is embedded in the root of the folded edge (9), and the folded edge (9) is tightly attached to the bottom surface of the sealing cap body (1) after folding.

2. A method for producing an aluminum foil sealing structure, applied to the aluminum foil sealing structure described in claim 1, characterized in that: Includes the following steps: S11. Preparation of sealing cap: S1101, Material cutting: Cutting is carried out according to the unfolded outer dimensions of the sealing cap body (1) to obtain the initial sealing cap material tray; S1102, Stamping: The initial sealing cover material obtained in step S1101 is placed into the extrusion molding die to obtain the initial shape structure of the unfolded folded edge (9); S1103, Folding the pre-compression steel ring (10): First, fold the folding edge (9) into a 90-degree structure, then embed the steel ring (10) at the root of the folding edge (9), and fold the folding edge (9) by the folding machine to ensure that the folding edge (9) is in close contact with the bottom surface of the sealing cap body (1); S12, Heat sealing of aluminum foil sealing paper (2): S1201. Cut the aluminum foil sealing paper (2) according to its size to obtain the initial aluminum foil sealing paper (2). S1202, Heating: The initial aluminum foil sealing paper (2) obtained in step S1201 is adsorbed by a heating ring with the same structure as the sealing cone (5) and sealing plane (6) and then attached to the sealing cone (5) and sealing plane (6) for rapid heating; S1203, Pressing: Rapid hot pressing sealing is performed using a pressing ring with the same external structure as the sealing cone (5) and sealing plane (6); S1204. Printing: Print text description (3) on aluminum foil sealing paper (2).

3. The method for producing an aluminum foil sealing structure according to claim 2, characterized in that: In step S1103, during the folding process of the folding edge (9), it is necessary to ensure that the sealing cone surface (5) and the sealing plane (6) have a support structure to prevent deformation.

4. The method for producing an aluminum foil sealing structure according to claim 2, characterized in that: The heating temperature in step S1202 is 150℃-165℃, and the heating time is 2s-3s. The pressing pressure in step S1203 is 0.05Mpa-0.07Mpa, and the pressing time is 1.5s-3s.

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