Environment-friendly heat sealing cover

Abstract

The utility model relates to an environment-friendly heat sealing cover which comprises a sealing ring used for being heat-sealed at a can opening of a can. The supporting ring is arranged on the side, facing the interior of the tank, of the sealing ring; the sealing cover body is used for heat-sealing the supporting ring to seal the inner hole of the sealing ring; and after heat sealing of the sealing ring is completed, the sealing ring extends to the side wall of the can filling opening. Compared with an easy-to-pull cover and an easy-to-tear cover which are directly arranged at the can opening in a single-layer hot pressing mode, the outer edge of the sealing ring and the side wall of the can opening of the can are connected in a hot pressing mode, the sealing performance is improved by increasing the contact area between the sealing ring and the can, and therefore under the condition that the requirement for the sealing performance of the can is high, the sealing performance of the can is improved. The sealing device is made of a composite material formed by combining paper, aluminum and a heat-sealable material, the sealing performance is further improved, the sealing device can be made of the paper and the heat-sealable material under the condition that the requirement for non-ultrahigh sealing performance is met, the sealing performance is guaranteed, and meanwhile the composite material formed by the paper and the heat-sealable material is easier to recycle and more environmentally friendly.

Description

Technical Field

[0001] This application relates to the technical field of capping, and in particular to an environmentally friendly heat-sealing cap. Background Technology

[0002] With the popularity of canned food, easy-open and easy-tear lids have become widely used on the lids of canned food containers, further increasing the convenience of processing and using canned food.

[0003] Traditional dry goods canned food typically have only one layer of easy-open or easy-tear lids, which are directly hot-pressed onto the can opening through a hot-pressing process, and are usually made of aluminum-plastic composite material to ensure airtightness.

[0004] Although it is easy to tear and has good sealing properties, aluminum-plastic composite materials are difficult to recycle and are not environmentally friendly. Utility Model Content

[0005] To address the difficulty in recycling traditional aluminum-plastic composite easy-open or easy-tear caps, this application provides an environmentally friendly heat-sealing cap.

[0006] The environmentally friendly heat-sealing cap provided in this application adopts the following technical solution:

[0007] An environmentally friendly heat-sealing cap includes:

[0008] Sealing ring, used for heat sealing at the mouth of the can;

[0009] A support ring is located on the side of the sealing ring facing the inside of the tank;

[0010] The cap body is heat-sealed to the support ring to seal the inner hole of the sealing ring;

[0011] After the sealing ring is heat-sealed, the sealing ring extends to the side wall at the can opening.

[0012] Compared to traditional easy-open and easy-tear caps that are directly hot-pressed onto the can opening, this application increases the sealing performance by forming a hot-pressed connection between the outer edge of the sealing ring and the side wall at the can opening, thereby increasing the contact area between the sealing ring and the can. This allows the application to be made using a composite material combining paper, aluminum, and heat-sealable materials to further improve sealing performance when high sealing requirements are needed, or to be made using only paper and heat-sealable materials when not requiring ultra-high sealing performance. While ensuring sealing performance, the composite material formed by paper and heat-sealable materials is easier to recycle and has a higher recycling rate, making it more environmentally friendly.

[0013] Optionally, the inner ring of the sealing ring has a chamfer on the side facing the cap body.

[0014] Optionally, the cover body is provided with a handle.

[0015] Optionally, the inner ring of the supporting ring is provided with a baffle for blocking the contents in the can body when the cover body is torn to access the contents in the can body, so that the contents in the can body are not easily poured out when accessed.

[0016] Optionally, the handle comprises:

[0017] a first connecting piece connected with the cover body;

[0018] a second connecting piece connected with the first connecting piece, the width of the second connecting piece being greater than that of the first connecting piece for adapting to being pinched by a user's fingers.

[0019] Optionally, the supporting ring is heat-sealed to the sealing ring.

[0020] According to the above technical solution, since the supporting ring is heat-sealed to the sealing ring without using glue, it is more environmentally friendly and healthy.

[0021] Optionally, a gap is provided between the outer edge of the cover body and the inner wall of the sealing ring after heat-sealing.

[0022] Optionally, the outer diameter of the supporting ring is smaller than the outer diameter of the cover body.

[0023] In summary, the present application has the following advantages: the outer edge of the sealing ring forms a heat-pressing connection with the sidewall at the can opening, increasing the contact area between the sealing ring and the can, thereby increasing the sealing performance between the sealing ring and the can. The present application can be made of aluminum-plastic composite material in cases where high sealing performance is required, further improving the sealing performance, and can be made of single heat-pressing material in cases of daily dry food packaging, which is easy to recycle and environmentally friendly. The sealing ring is supported by the supporting ring, so that it is not easily deformed during heat pressing. For dry food with different particle sizes and shapes, the baffle is set to cooperate with the food to prevent the food from being poured out completely from the can when accessed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective structural schematic diagram of Embodiment 1 of the present application.

[0025] Figure 2 is an exploded schematic diagram of the present application, in which the supporting ring is in an initial state without the baffle installed.

[0026] Figure 3 is a sectional view of the present application.

[0027] Figure 4is a perspective view of a support ring with a screen-shaped baffle of the present application.

[0028] Figure 5 is a perspective view of a support ring with a partial circular baffle of the present application.

[0029] Figure 6 is a front view of a support ring with a fan-shaped baffle of the present application.

[0030] Figure 7 is a cross-sectional view of embodiment 2 of the present application.

[0031] Figure 8 is a cross-sectional view of embodiment 3 of the present application.

[0032] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions and / or relative positioning of some of the elements in the drawings can be exaggerated relative to other elements to help to improve understanding of the present embodiments.

[0033] Reference signs: 1, sealing ring; 11, chamfer; 2, cover body; 3, support ring; 4, handle; 5, baffle. Embodiment

[0034] The following description is provided in conjunction with the drawings as set forth below, and together with the accompanying drawings, explain the principles of the present application. Figures 1-8 The present application is further described in detail.

[0035] Embodiment 1, the present embodiment 1 discloses an environmental protection heat sealing cover, referring to Figure 1 and Figure 2 , including a sealing ring 1, a cover body 2 and a support ring 3.

[0036] Referring to Figure 2 and Figure 3 , in the use scene without the requirement of super high sealing performance, for example, when packaging daily dry food in cans, the sealing ring 1, the cover body 2 and the support ring 3 are all made of the material after the paper and the heat sealable material are compounded, the outer edge of the sealing ring 1 is hot-pressed to the can opening of the can body through the hot-pressing process, and the outer edge of the sealing ring 1 covers the inner side wall, the outer side wall and the end face of the can opening of the can body.

[0037] Referring to Figure 2 and Figure 3 , the support ring 3 is coaxially hot-pressed on the side of the sealing ring 1 facing the inside of the can body, and the cover body 2 is hot-pressed on the side of the support ring 3 away from the inside of the can body. The cover body 2 closes the inner circle of the sealing ring 1 and the support ring 3, and the outer edge of the side of the cover body 2 away from the sealing ring 1 is integrally provided with a handle 4.

[0038] Referring to Figure 2 and Figure 3The handle 4 comprises a first connecting piece in the shape of a strip and a second connecting piece with a width greater than the first connecting piece. In this embodiment, the second connecting piece is in the shape of a circular sheet. The first connecting piece and the second connecting piece are integrally connected. The first connecting piece is integrally connected with the cover body 2. A user can tear the cover body 2 more easily by pinching the second connecting piece, and the material is more saved.

[0039] Referring to Figure 2 and Figure 3 , the inner ring of the sealing ring 1 is provided with a chamfer 11 on the side facing the cover body 2. When the cover body 2 is hot-pressed onto the support ring 3, the cover body 2 and the sealing ring 1 are more closely fitted, and gaps are less likely to occur. Thus, the hot-pressing firmness of the cover body 2 and the sealing performance between the cover body 2 and the sealing ring 1 are further enhanced.

[0040] In use scenarios with ultra-high sealing performance requirements, the sealing ring 1, the cover body 2, and the support ring 3 can still be made of a composite material formed by paper, aluminum, and heat-sealable material. Compared with traditional hot-pressing covers, the sealing performance is better.

[0041] Referring to Figure 2 and Figure 4 , according to different requirements and the state of dry food, a baffle 5 can be integrally provided in the inner ring of the support ring 3. The baffle 5 is in the shape of a mesh and is used to cooperate with salt, pepper, icing sugar, and other dry foods that need to be evenly shaken and scattered. In this way, the salt, pepper, icing sugar, and other dry foods that need to be evenly shaken and scattered can be prevented from being directly poured out when taken.

[0042] Referring to Figure 2 and Figure 5 , the baffle 5 can also be partially circular to block part of the inner ring of the support ring 3. This is used to cooperate with the taking of dry food in the form of large particles to prevent the dry food from being poured out completely.

[0043] Referring to Figure 2 and Figure 6 , the baffle 5 can also be in the shape of a fan to form small holes with the support ring 3. This is used to cooperate with the taking of dry food in the form of powder that can be directly poured out for use to prevent the dry food from being poured out completely when taken.

[0044] Referring to Figure 1 , when packaging sheet-shaped or block-shaped dry food, the baffle 5 is removed.

[0045] Referring to Figure 1 , Figure 2 and Figure 3 , when the sealing ring 1 is heat-sealed to the mouth of the can body, a gap is provided between the outer edge of the cover body 2 and the inner wall of the sealing ring 1. In this way, the cover body 2 is less likely to be stuck when torn by the handle 4, and the cover body 2 is also less likely to interfere with the sealing ring when the sealing ring 1 is heat-sealed to the mouth of the can body.

[0046] With reference to Figure 1 and Figure 3 The outer diameter of the supporting ring 3 is smaller than the outer diameter of the cover body, and when the sealing ring 1 and the cover body 2 are synchronously hot-pressed on the supporting ring 3, the situation that the cover body 2 is completely hot-pressed on the sealing ring 1 due to excessively high hot-pressing temperature, resulting in the whole being scrapped, is not prone to occur.

[0047] The implementation principle of the environment-friendly hot cover of the embodiment 1 is as follows: after the hot pressing of the sealing ring 1 is completed, the inner side wall, the outer side wall and the end face of the can opening of the can body are all covered by the outer edge of the sealing ring 1, so that the air outside needs to pass through three sealing barriers of the sealing ring 1 and the outer side wall of the can body, the sealing ring 1 and the can opening end face of the can body and the sealing ring 1 and the inner side wall of the can opening of the can body in sequence before entering the can body, thereby greatly improving the sealing property between the sealing ring 1 and the can body.

[0048] The embodiment 2, with reference to Figure 6 The difference between the embodiment 2 and the embodiment 1 is only that when the sealing ring 1 is hot-pressed at the can opening of the can body, the inner side wall and the end face of the can opening of the can body are covered by the outer edge of the sealing ring 1.

[0049] The embodiment 3, with reference to Figure 7 The difference between the embodiment 3 and the embodiment 1 is only that when the sealing ring 1 is hot-pressed at the can opening of the can body, the outer side wall and the end face of the can opening of the can body are covered by the outer edge of the sealing ring 1.

[0050] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An environmentally friendly heat seal lid characterized in that, The application relates to a sealing ring (1) for heat-sealing at the mouth of a can, a support ring (3) arranged on the side of the sealing ring (1) facing the inside of the can, a cover body (2) heat-sealed to the support ring (3) to seal the inner hole of the sealing ring (1), and a side wall of the can extending to the mouth of the can after the sealing ring (1) is heat-sealed. The inner ring of the sealing ring (1) is provided with a chamfer (11) on the side facing the cover body (2). The cover body (2) is provided with a handle (4). The inner ring of the support ring (3) is provided with a baffle (5) for blocking the contents of the can when the cover body (2) is torn to take the contents of the can, so that the contents of the can are not easily poured out when taken. The handle (4) comprises a first connecting piece connected with the cover body (2), and a second connecting piece connected with the first connecting piece and having a width greater than that of the first connecting piece for being pinched by fingers of a user.

2. An eco-friendly heat-seal cover according to claim 1, wherein: The support ring (3) is heat-sealed to the sealing ring (1).

3. The eco-friendly heat-seal cover according to claim 1, wherein: A gap is arranged between the outer edge of the cover body (2) and the inner wall of the sealing ring (1) after heat-sealing.

4. The eco-friendly heat-seal cover according to claim 1, wherein: The outer diameter of the support ring (3) is smaller than that of the cover body (2).

5. The eco-friendly heat-seal cover according to claim 3, wherein ​ ​ 6. The eco-friendly heat-seal cover according to claim 1, wherein: ​ 7. The eco-friendly heat-seal cover according to claim 1, wherein: ​ 8. The eco-friendly heat-seal cover according to claim 1, wherein: ​

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