High-strength paper-plastic inner liner convenient to buckle

By designing a high-strength paper-plastic liner with a snap-fit ​​structure and reinforcing materials, the problem of weak snap-fit ​​of the paper-plastic liner was solved, achieving a firm fastening and efficient production, and improving the service life and safety of the paper-plastic liner.

CN224312247UActive Publication Date: 2026-06-02LIHUA COLOR PRINTING (KUNSHAN) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIHUA COLOR PRINTING (KUNSHAN) CO LTD
Filing Date
2025-05-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The existing paper-plastic lining is not strong enough when snapped together, requiring a large amount of adhesive for bonding, which affects the production speed.

Method used

A high-strength, easy-to-fasten paper-plastic liner was designed. The side panels are reliably fastened through a combination structure of rectangular cardboard, side panels, snap-fit ​​grooves, and limiting blocks. Fire-retardant paper, reinforced cardboard, waterproof coating, and silicone cardboard are used to improve the fire resistance, water resistance, and cushioning performance of the cardboard.

Benefits of technology

It achieves a firm fastening of the paper-plastic lining, reduces the use of adhesives, improves production efficiency and service life, and enhances fire resistance and waterproof performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of paper-plastic inner liner of high strength convenient to buckle, belong to paper-plastic inner liner technical field, including rectangular paperboard, the front and back of rectangular paperboard are movably hinged with first side plate, the right side of rectangular paperboard movably hinged with second side plate, the left side of rectangular paperboard movably hinged with two third side plates, the upper surface of rectangular paperboard is respectively fixedly connected with positioning block and auxiliary block, the left and right two sides of each first side plate are fixedly connected with clamping block, the front and back of second side plate are both provided with first clamping groove, the side of two third side plates away from each other is both provided with second clamping groove.The paper-plastic inner liner of high strength convenient to buckle, cooperate by multiple components, solve the paper-plastic inner liner when not enough firm, easily broken, after clamping, often still need a lot of adhesive to stick, seriously affect the speed problem when producing, play the role of improving paper-plastic inner liner use effect.
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Description

Technical Field

[0001] This application belongs to the field of paper-plastic lining technology, and particularly relates to a high-strength paper-plastic lining that is easy to fasten. Background Technology

[0002] Paper-plastic lining is one of the most environmentally friendly lining materials. Packaging box manufacturers can precisely mold paper-plastic according to product requirements, which can play a good protective role. In many electronic product industries, due to the environmental performance of paper-plastic, they have begun to use paper-plastic lining to replace blister lining in electronic product packaging boxes.

[0003] Existing paper-plastic liners are not secure enough when snapped together, and often require a large amount of adhesive to bond them after snapping, which seriously affects the speed of production and reduces the effectiveness of the paper-plastic liners.

[0004] To address these issues, we propose a high-strength, easily snap-fit ​​paper-plastic liner. Utility Model Content

[0005] The purpose of this application is to solve the problem of insufficient snap-fit ​​in the prior art, and to propose a high-strength paper-plastic liner that is easy to fasten.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-strength, easily snap-fit ​​paper-plastic liner includes a rectangular cardboard. The front and back of the rectangular cardboard are hinged with first side plates. The right side of the rectangular cardboard is hinged with a second side plate. The left side of the rectangular cardboard is hinged with two third side plates. A positioning block and an auxiliary block are fixedly connected to the upper surface of the rectangular cardboard. Each of the first side plates has snap-fit ​​blocks fixedly connected to its left and right sides. The front and back of the second side plates each have a first snap-fit ​​groove. The two third side plates each have a second snap-fit ​​groove on their opposite sides.

[0008] Preferably, a first fireproof paper is fixedly connected to the upper surface of the rectangular cardboard, and a second fireproof paper is fixedly connected to the bottom surface of the rectangular cardboard.

[0009] Preferably, a first reinforcing cardboard is fixedly connected to the upper surface of the first fireproof paper, and a second reinforcing cardboard is fixedly connected to the bottom surface of the second fireproof paper.

[0010] Preferably, the upper surface of the first reinforcing cardboard is fixedly connected with a first waterproof coating, and the bottom surface of the second reinforcing cardboard is fixedly connected with a second waterproof coating.

[0011] Preferably, a first waterproof paper is fixedly connected to the upper surface of the first waterproof coating, and a second waterproof paper is fixedly connected to the bottom surface of the second waterproof coating.

[0012] Preferably, a first silicone cardboard is fixedly connected to the upper surface of the first waterproof paper, and a second silicone cardboard is fixedly connected to the bottom surface of the second waterproof paper.

[0013] In summary, the technical effects and advantages of this application are as follows:

[0014] By incorporating a rectangular cardboard, a first side panel, a second side panel, a third side panel, a positioning block, an auxiliary block, a snap-fit ​​block, a first snap-fit ​​groove, and a second snap-fit ​​groove, the first, second, and third side panels can be pressed simultaneously towards the rectangular cardboard. This causes the snap-fit ​​blocks to be inserted into the first and second snap-fit ​​grooves respectively, thus limiting the mutual positioning of the first, second, and third side panels. The positioning block and auxiliary block further limit the positioning of the multiple side panels after snapping. This solves the problem of insufficient firmness when snapping paper-plastic linings, which often requires a large amount of adhesive for bonding after snapping, seriously affecting the production speed. This improves the performance of paper-plastic linings. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the second side plate of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall interlocking three-dimensional structure of this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the first side plate of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the rectangular cardboard cross-section of this utility model.

[0019] In the diagram: 1. Rectangular cardboard; 2. First side panel; 3. Second side panel; 4. Third side panel; 5. Positioning block; 6. Auxiliary block; 7. Snap-fit ​​block; 8. First snap-fit ​​groove; 9. Second snap-fit ​​groove; 10. First fireproof paper; 11. Second fireproof paper; 12. First reinforcing cardboard; 13. Second reinforcing cardboard; 14. First waterproof coating; 15. Second waterproof coating; 16. First waterproof paper; 17. Second waterproof paper; 18. First silicone cardboard; 19. Second silicone cardboard. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A high-strength, easy-to-fasten paper-plastic liner includes a rectangular cardboard 1. The front and back of the rectangular cardboard 1 are movably hinged with first side plates 2. The upper surface of the rectangular cardboard 1 is fixedly connected with first fireproof paper 10, and the bottom surface of the rectangular cardboard 1 is fixedly connected with second fireproof paper 11. By relying on the cooperation of the first fireproof paper 10 and the second fireproof paper 11, the fire resistance of the rectangular cardboard 1 can be effectively increased, the possibility of spontaneous combustion of the rectangular cardboard 1 can be avoided, and the safety during use can be increased.

[0022] The right side of the rectangular cardboard 1 is hinged to a second side plate 3, and the left side of the rectangular cardboard 1 is hinged to two third side plates 4. The upper surface of the first fireproof paper 10 is fixedly connected to a first reinforcing cardboard 12, and the bottom surface of the second fireproof paper 11 is fixedly connected to a second reinforcing cardboard 13. By using the first reinforcing cardboard 12 and the second reinforcing cardboard 13 together, the bending resistance of the rectangular cardboard 1 can be further increased, the durability of the rectangular cardboard 1 can be increased, and the service life of the rectangular cardboard 1 can be improved.

[0023] The upper surface of the rectangular cardboard 1 is fixedly connected with positioning block 5 and auxiliary block 6 respectively. The upper surface of the first reinforcing cardboard 12 is fixedly connected with first waterproof coating 14, and the bottom surface of the second reinforcing cardboard 13 is fixedly connected with second waterproof coating 15. Through the first waterproof coating 14 and the second waterproof coating 15, the waterproof ability of the rectangular cardboard 1 can be effectively increased, preventing the rectangular cardboard 1 from deforming due to water stains, and further increasing the effect during use.

[0024] Each first side panel 2 has a snap-fit ​​block 7 fixedly connected to both its left and right sides. The front and back sides of the second side panel 3 are provided with a first snap-fit ​​groove 8. The upper surface of the first waterproof coating 14 is fixedly connected to a first waterproof paper 16, and the bottom surface of the second waterproof coating 15 is fixedly connected to a second waterproof paper 17. By relying on the cooperation of the first waterproof paper 16 and the second waterproof paper 17, the waterproof effect of the rectangular cardboard 1 can be further increased, providing effective protection for the rectangular cardboard 1 and thus increasing its effectiveness during use.

[0025] The two third side plates 4 are provided with second snap-fit ​​grooves 9 on their opposite sides. The upper surface of the first waterproof paper 16 is fixedly connected to the first silicone cardboard 18, and the bottom surface of the second waterproof paper 17 is fixedly connected to the second silicone cardboard 19. The first silicone cardboard 18 and the second silicone cardboard 19 can provide cushioning for the rectangular cardboard 1, reduce the damage to the rectangular cardboard 1 when it is folded, and thus further improve the service life of the rectangular cardboard 1.

[0026] The working principle of this utility model is as follows: When in use, the first side plate 2, the second side plate 3, and the third side plate 4 are pressed simultaneously, causing them to fold towards the upper surface of the rectangular cardboard 1. During the folding process, multiple snap-fit ​​blocks 7 are inserted into the first snap-fit ​​groove 8 and the second snap-fit ​​groove 9 respectively, thereby restraining the first side plate 2, the second side plate 3, and the third side plate 4. The rectangular cardboard 1 is tightly fastened together by the snap-fit ​​blocks, which increases the firmness of the paper-plastic lining after fastening and eliminates the need for a large amount of adhesive. At the same time, the positioning block 5 and the auxiliary block 6 can further limit the first side plate 2, the second side plate 3, and the third side plate 4, providing extremely high support strength and enhancing the effectiveness during use. Furthermore, the cooperation of the first fireproof paper 10, the second fireproof paper 11, the first reinforcing cardboard 12, the second reinforcing cardboard 13, the first waterproof coating 14, the second waterproof coating 15, the first waterproof paper 16, and the second waterproof paper 17 can effectively improve the waterproofness, water resistance, and strength of the rectangular cardboard 1, thereby increasing the service life of the paper-plastic lining.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0028] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength, easy-to-fasten paper-plastic liner, comprising a rectangular cardboard (1), characterized in that: The rectangular cardboard (1) has a first side plate (2) hinged to both the front and back sides, a second side plate (3) hinged to the right side, and two third side plates (4) hinged to the left side. The upper surface of the rectangular cardboard (1) is fixedly connected to a positioning block (5) and an auxiliary block (6). Each of the first side plates (2) has a snap-fit ​​block (7) fixedly connected to both the left and right sides. The second side plate (3) has a first snap-fit ​​groove (8) on both the front and back sides. The two third side plates (4) have a second snap-fit ​​groove (9) on the side that is far apart from each other.

2. The high-strength, easily fastened paper-plastic liner according to claim 1, characterized in that: The upper surface of the rectangular cardboard (1) is fixedly connected with a first fireproof paper (10), and the bottom surface of the rectangular cardboard (1) is fixedly connected with a second fireproof paper (11).

3. The high-strength, easily fastened paper-plastic liner according to claim 2, characterized in that: The upper surface of the first fireproof paper (10) is fixedly connected to a first reinforcing cardboard (12), and the bottom surface of the second fireproof paper (11) is fixedly connected to a second reinforcing cardboard (13).

4. A high-strength, easily fastened paper-plastic liner according to claim 3, characterized in that: The upper surface of the first reinforcing cardboard (12) is fixedly connected with a first waterproof coating (14), and the bottom surface of the second reinforcing cardboard (13) is fixedly connected with a second waterproof coating (15).

5. A high-strength, easily fastened paper-plastic liner according to claim 4, characterized in that: The upper surface of the first waterproof coating (14) is fixedly connected to a first waterproof paper (16), and the bottom surface of the second waterproof coating (15) is fixedly connected to a second waterproof paper (17).

6. A high-strength, easily fastened paper-plastic liner according to claim 5, characterized in that: The upper surface of the first waterproof paper (16) is fixedly connected to a first silicone cardboard (18), and the bottom surface of the second waterproof paper (17) is fixedly connected to a second silicone cardboard (19).