A heat-pressing double-layer safety packaging bag

The design of a double-layer structure and a cushioning safety mechanism solves the problem of incomplete sealing of packaging bags, achieving better protection of goods and transportation safety.

CN224492049UActive Publication Date: 2026-07-14ZHEJIANG WEISEN PACKAGING TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG WEISEN PACKAGING TECHNOLOGY CO LTD
Filing Date
2025-08-26
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing packaging bags are prone to leaks during transportation and production due to inadequate sealing, which affects transportation and production operations.

Method used

The packaging bag adopts a double-layer structure, including a first bag body and a second bag body, and is equipped with a cushioning safety mechanism, a heat-sealing layer and a support structure. The cushioning layer and safety column disperse stress and enhance structural strength and sealing performance.

Benefits of technology

It improves the sealing tightness of packaging bags, prevents materials from spilling, enhances the protection of goods, and improves the safety of transportation and storage.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224492049U_ABST
    Figure CN224492049U_ABST
Patent Text Reader

Abstract

The utility model relates to packing bag technical field, the utility model discloses a kind of hot-pressing double-layer safety packing bag, including first bag body, the front end surface and rear end surface of first bag body are fixedly connected with handle, and the lower end surface of first bag body inner cavity is fixedly connected with buffer plate, the upper end surface of buffer plate is fixedly connected with second bag body, the inner cavity of second bag body is fixedly connected with hot-pressing sealing layer, and the outer wall of second bag body is fixedly connected with buffer safety mechanism, the utility model further to the protection effect of article is better by the composite use of first bag body and second bag body, further protect article by the buffer safety mechanism installed between first bag body and second bag body, to improve the security of device to protect article, by hot-pressing sealing layer to carry out hot-pressing sealing for convenient packing bag, to guarantee the tightness of packing bag seal, prevent material in packing bag from spilling in transportation or production way.
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Description

Technical Field

[0001] This utility model relates to the field of packaging bag technology, and in particular to a heat-pressed double-layer safety packaging bag. Background Technology

[0002] Packaging bags are made of plastic and are used to package various products in daily life. They are widely used in daily life and industrial production. Packaging bags facilitate the transportation of goods in the production and distribution process and have the characteristics of large capacity, labor saving and improved efficiency.

[0003] For example, the working principle of a packaging bag disclosed in Chinese Patent No. CN104787479B is as follows: "The second bag body includes an inflation valve and multiple inflation chambers connected by connecting pipes. The packaging bag can be used to package items during the transportation of goods, for example, when packaging for secondary shipments. When the packaging bag is subjected to external compression or collision, the gas can flow in the inflation chambers, which can play a stronger cushioning role." However, in actual use, although this type of packaging bag has advantages in cushioning, it also has other problems. Since the packaging bag is often used in transportation and production processing, if the sealing of the packaging bag is not tight enough, the material in the packaging bag will spill out during transportation or production, causing trouble and losses to transportation and production operations. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] A heat-pressed double-layer safety packaging bag includes a first bag body, with handles fixedly connected to the front and rear ends of the first bag body, and a buffer plate fixedly connected to the lower end of the inner cavity of the first bag body. A second bag body is fixedly connected to the upper end of the buffer plate, with a heat-pressed sealing layer fixedly connected to the inner cavity of the second bag body, and a buffer safety mechanism fixedly connected to the outer wall of the second bag body, with the outer wall of the buffer safety mechanism overlapping the inner cavity of the first bag body.

[0006] As an improvement to the above technical solution, the buffer safety mechanism includes a first buffer layer and a second buffer layer. The ends of the first buffer layers that are far apart from each other are fixedly connected to the inner cavity of the first bag body, and the ends of the first buffer layers that are close to each other overlap with the outer wall of the second bag body. The ends of the second buffer layers that are close to each other are fixedly connected to the outer wall of the second bag body, and the ends of the second buffer layers that are far apart from each other overlap with the inner cavity of the first bag body. The outer walls of the second buffer layers and the first buffer layers are arranged alternately.

[0007] As an improvement to the above technical solution, the buffer safety mechanism further includes safety columns. The lower end of the safety column is fixedly connected to the lower end of the inner cavity of the first bag, and the ends of the safety columns that are far apart from each other are fixedly connected to the four corners of the inner cavity of the first bag, while the ends of the safety columns that are close to each other are fixedly connected to the outer walls of the four corners of the second bag.

[0008] As an improvement to the above technical solution, the buffer safety mechanism further includes a plurality of support columns, which are fixedly installed on the inner wall of the buffer plate.

[0009] As an improvement to the above technical solution, the outer wall of the second bag is equipped with a moisture-proof layer and a light-proof layer, and the outer wall of the first bag is fixedly connected with a support plate.

[0010] The beneficial effects of this utility model are:

[0011] The combined use of the first and second bags provides better protection for the items. The buffer safety mechanism installed between the first and second bags further protects the items, thereby improving the safety of the device in protecting the items. The hot-press sealing layer facilitates the hot-press sealing of the packaging bag, thereby ensuring the tightness of the packaging bag seal and preventing the materials in the packaging bag from spilling out during transportation or production. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present utility model;

[0013] Figure 2 This utility model Figure 1 The front view;

[0014] Figure 3 This utility model Figure 2 Sectional view at point bb;

[0015] Figure 4 This utility model Figure 2 Sectional view at point aa;

[0016] Figure 5 This utility model Figure 3 A magnified view of point c in the middle.

[0017] Reference numerals: 1. First bag body; 2. Handle; 3. Buffer plate; 4. Second bag body; 5. Hot-pressed sealing layer; 6. Buffer safety mechanism; 61. Safety post; 62. First buffer layer; 63. Second buffer layer; 64. Support post; 7. Support plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution: a heat-pressed double-layer safety packaging bag, including a first bag body 1, a handle 2 fixedly connected to the front end and rear end of the first bag body 1, a buffer plate 3 fixedly connected to the lower end of the inner cavity of the first bag body 1, a second bag body 4 fixedly connected to the upper end of the buffer plate 3, a heat-pressed sealing layer 5 fixedly connected to the inner cavity of the second bag body 4, and a buffer safety mechanism 6 fixedly connected to the outer wall of the second bag body 4, with the outer wall of the buffer safety mechanism 6 overlapping the inner cavity of the first bag body 1.

[0020] The combined use of the first bag body 1 and the second bag body 4 provides better protection for the items. The buffer safety mechanism 6 installed between the first bag body 1 and the second bag body 4 further protects the items, thereby improving the safety of the device in protecting the items. The heat-sealing layer 5 facilitates the heat-sealing of the packaging bag, thereby ensuring the tightness of the packaging bag seal and preventing the materials in the packaging bag from spilling out during transportation or production.

[0021] Specifically, the cushioning safety mechanism 6 includes a first cushioning layer 62 and a second cushioning layer 63. The ends of the first cushioning layers 62 that are far apart from each other are fixedly connected to the inner cavity of the first bag body 1, and the ends of the first cushioning layers 62 that are close to each other overlap with the outer wall of the second bag body 4. The ends of the second cushioning layers 63 that are close to each other are fixedly connected to the outer wall of the second bag body 4, and the ends of the second cushioning layers 63 that are far apart from each other overlap with the inner cavity of the first bag body 1. The outer walls of the second cushioning layers 63 and the first cushioning layers 62 are arranged alternately.

[0022] like Figure 4 As shown, the first buffer layer 62 and the second buffer layer 63 are provided to buffer the impact on the device, thereby ensuring the safety of the items inside the second bag 4. The first buffer layer 62 and the second buffer layer 63 are arranged in a cross pattern, so that the first buffer layer 62 and the second buffer layer 63 support each other and provide better support and buffering effect for the device, further ensuring the safety of the items inside the device.

[0023] Specifically, the buffer safety mechanism 6 also includes safety posts 61. The lower end of the safety posts 61 is fixedly connected to the lower end of the inner cavity of the first bag body 1, and the ends of the safety posts 61 that are far apart from each other are fixedly connected to the four corners of the inner cavity of the first bag body 1, and the ends of the safety posts 61 that are close to each other are fixedly connected to the outer walls of the four corners of the second bag body 4.

[0024] like Figure 4As shown, a stable connecting frame is constructed through the safety post 61, tightly connecting the first bag body 1 and the second bag body 4. When the packaging bag is subjected to external pressure or collision, the safety post 61 can effectively disperse stress, preventing stress concentration that could lead to local deformation or damage to the bag body. This enhances the structural strength and stability of the entire packaging bag and extends its service life. In terms of cushioning protection, the safety post 61 plays a crucial buffering role. When the packaging bag encounters an impact, it can absorb and dissipate some of the impact energy, reducing the direct force on the items inside the second bag body 4. This provides an additional buffer protection layer for the internal items, effectively reducing the risk of damage to the items due to collisions during transportation and storage.

[0025] Specifically, the buffer safety mechanism 6 also includes a plurality of support columns 64, which are fixedly installed on the inner wall of the buffer plate 3.

[0026] like Figure 5 As shown, the support column 64 enhances the strength and rigidity of the buffer plate 3, enabling it to maintain its shape stability under various external forces and providing solid support for the second bag body 4. Furthermore, together with the buffer plate 3, it forms a highly efficient cushioning system that effectively absorbs and dissipates impact energy, reducing vibration and compression of the internal items. In summary, the support column 64 comprehensively improves the packaging bag's ability to protect the internal items, ensuring their safety and integrity in complex transportation and storage environments.

[0027] Specifically, the outer wall of the second bag body 4 is equipped with a moisture-proof layer and a light-proof layer, and the outer wall of the first bag body 1 is fixedly connected with a support plate 7.

[0028] There are four support plates 7. The support plates 7 can provide certain support for the first bag 1, so that personnel can easily support the device and make it convenient for a single person to place items inside the device. The moisture-proof layer and light-proof layer installed on the second bag 4 can protect against moisture and light, further ensuring the safety of the items inside the second bag 4 and further improving the safety of the items inside the device.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A heat-pressed double-layer safety packaging bag, comprising a first bag body (1), wherein a handle (2) is fixedly connected to the front and rear ends of the first bag body (1), and a buffer plate (3) is fixedly connected to the lower end of the inner cavity of the first bag body (1), characterized in that: The upper end face of the buffer plate (3) is fixedly connected to the second bag body (4), the inner cavity of the second bag body (4) is fixedly connected to the heat-pressed sealing layer (5), and the outer wall of the second bag body (4) is fixedly connected to the buffer safety mechanism (6), and the outer wall of the buffer safety mechanism (6) overlaps with the inner cavity of the first bag body (1).

2. The heat-pressed double-layer safety packaging bag according to claim 1, characterized in that: The buffer safety mechanism (6) includes a first buffer layer (62) and a second buffer layer (63). The ends of the first buffer layer (62) that are far apart from each other are fixedly connected to the inner cavity of the first bag body (1), and the ends of the first buffer layer (62) that are close to each other overlap with the outer wall of the second bag body (4). The ends of the second buffer layer (63) that are close to each other are fixedly connected to the outer wall of the second bag body (4), and the ends of the second buffer layer (63) that are far apart from each other overlap with the inner cavity of the first bag body (1). The outer walls of the second buffer layer (63) and the first buffer layer (62) are arranged alternately.

3. The heat-pressed double-layer safety packaging bag according to claim 1, characterized in that: The buffer safety mechanism (6) further includes safety posts (61), the lower end of which is fixedly connected to the lower end of the inner cavity of the first bag body (1), and the ends of the safety posts (61) that are far apart from each other are fixedly connected to the four corners of the inner cavity of the first bag body (1), and the ends of the safety posts (61) that are close to each other are fixedly connected to the outer walls of the four corners of the second bag body (4).

4. The heat-pressed double-layer safety packaging bag according to claim 1, characterized in that: The buffer safety mechanism (6) also includes a plurality of support columns (64), which are fixedly installed on the inner wall of the buffer plate (3).

5. The heat-pressed double-layer safety packaging bag according to claim 1, characterized in that: The outer wall of the second bag (4) is equipped with a moisture-proof layer and a light-proof layer, and the outer wall of the first bag (1) is fixedly connected with a support plate (7).