Hard paperboard coated with waterproof layer on surface
By covering the surface of the cardboard with a waterproof surface layer, a thermal insulation layer and a puncture-proof layer, the problem of insufficient waterproofing, thermal insulation and puncture-proof functions of the cardboard is solved, and a longer service life and a wider range of applications are achieved.
Patent Information
- Application Number
- CN202422902061.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional hard cardboard has poor waterproof, heat-insulating and puncture-proof properties during use, resulting in a shortened service life and limited scope of application.
A waterproof surface layer, a heat-insulating layer and a puncture-proof layer are covered on the surface of the cardboard and bonded together with glue to form a multi-layer structure, thereby improving the waterproof, heat-insulating and puncture-proof properties respectively.
It effectively prevents water from soaking and being punctured by sharp objects, prolongs its service life, improves its heat preservation and expands its scope of application.
Smart Images
Figure CN223329629U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of paperboards, in particular to a hard paperboard with a waterproof layer on the surface. Background Art
[0002] Rigid cardboard is a multi-layer adhesive body, which consists of at least a layer of corrugated core paper and a layer of paper. It has high mechanical strength and can withstand collisions and falls during transportation. The actual performance of rigid cardboard depends on three factors: the characteristics of the core paper and cardboard and the structure of the carton itself;
[0003] When using existing rigid cardboard, the corrugated corrugations of the rigid cardboard are like connected arched doors, arranged in a row and supporting each other to form a triangular structure. It has good mechanical strength, can withstand a certain amount of pressure from a plane, and is elastic and has a good cushioning effect. Rigid cardboard needs to be processed into cartons to package and protect items.
[0004] During the use of traditional hard cardboard, the arched doors connected by the inner corrugated corrugations are arranged side by side in a row to form a triangular structure to enhance the mechanical strength of the cardboard and make the cardboard more durable. After the cardboard is processed into a carton, the items are packaged inside. Since the current cardboard has a relatively single function, its waterproof, heat-insulating and puncture-proof functions are poor. When the outside of the cardboard comes into contact with water or is punctured, the strength of the cardboard will be reduced, thereby reducing the service life of the cardboard. In addition, the thermal insulation property of the cardboard is poor, and it is not convenient to package some items after being processed into a carton, thereby reducing the scope of application of the cardboard. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a hard cardboard with a surface covered with a waterproof layer, which solves the problem that in the use of traditional hard cardboard, the arch doors connected by the inner corrugated corrugations are arranged side by side in a row to form a triangular structure to enhance the mechanical strength of the cardboard and make the cardboard more durable. After the cardboard is processed into a carton, the items are packaged inside. Since the current cardboard has a relatively single function, its waterproof, heat-insulating and puncture-proof functions are poor. When the outside of the cardboard comes into contact with water or is punctured, the use strength of the cardboard will be reduced, thereby reducing the service life of the cardboard. In addition, the heat-insulating property of the cardboard is poor, and it is inconvenient to package some items after being processed into a carton, thereby reducing the scope of application of the cardboard.
[0006] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solution: a hard cardboard with a waterproof layer on the surface, comprising an outer paper layer, the outer wall of the outer paper layer is provided with a waterproof surface layer, the bottom of the outer paper layer is provided with a first inner paper layer, the outer wall of the first inner paper layer is provided with a second paper core, the outer wall of the second paper core is provided with an insulation layer, and the bottom of the insulation layer is provided with an anti-puncture layer.
[0007] Preferably, the outer wall of the outer paper layer is provided with a first paper core, and the outer wall of the first paper core is fixedly connected to the outer wall of the first inner paper layer.
[0008] Preferably, the outer wall of the thermal insulation layer is provided with a second inner paper layer, and the outer wall of the second inner paper layer is provided with an anti-stab layer.
[0009] Preferably, the outer wall of the waterproof surface layer is processed with positioning lines.
[0010] Preferably, the outer paper layer, the waterproof surface layer, the first paper core, the first inner paper layer, the second paper core, the thermal insulation layer, the second inner paper layer and the stab-proof layer are all bonded together by glue.
[0011] Beneficial effects
[0012] The utility model provides a hard cardboard with a waterproof layer on its surface. The hard cardboard with a waterproof layer on its surface has the following beneficial effects: the waterproof surface layer isolates external water from the cardboard, preventing water from soaking the cardboard and reducing its usability; the puncture-proof layer prevents sharp objects from puncturing the cardboard from the inside, thereby extending the service life of the cardboard; and the thermal insulation layer improves the thermal insulation properties of the cardboard, enabling the cardboard to be used for packaging items requiring thermal insulation, thereby expanding the cardboard's range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of the utility model;
[0014] Figure 2 for Figure 1 Schematic diagram of the connection structure of the first paper core, the first inner paper layer and the second paper core;
[0015] Figure 3 for Figure 1 Schematic diagram of the connection structure of the middle insulation layer, the second inner paper layer and the stab-proof layer;
[0016] Figure 4 for Figure 1 Schematic diagram of the connection structure between the inner and outer paper layers and the waterproof surface layer.
[0017] In the figure: 1. Outer paper layer; 2. Waterproof surface layer; 3. First paper core; 4. First inner paper layer; 5. Second paper core; 6. Insulation layer; 7. Second inner paper layer; 8. Anti-puncture layer. DETAILED DESCRIPTION
[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.
[0020] During the use of traditional hard cardboard, the arched doors connected by the inner corrugated corrugations are arranged side by side in a row to form a triangular structure to enhance the mechanical strength of the cardboard and make it more durable. After the cardboard is processed into a carton, the items are packed inside. Due to the relatively single function of the current cardboard, its waterproof, heat-insulating and puncture-proof functions are poor. When the outer surface of the cardboard comes into contact with water or is punctured, the cardboard's strength will be reduced, thereby reducing the service life of the cardboard. In addition, the cardboard has poor heat insulation properties, making it inconvenient to package some items after being processed into a carton, thereby reducing the scope of application of the cardboard.
[0021] In view of this, the utility model provides a hard cardboard with a waterproof layer on the surface. The waterproof surface layer separates external water from the cardboard to prevent water from soaking the cardboard and reducing its usability. The puncture-proof layer can prevent sharp objects from puncturing the cardboard from the inside, thereby extending the service life of the cardboard. The thermal insulation layer improves the thermal insulation properties of the cardboard, so that the cardboard can be used to package items that require thermal insulation effects, thereby expanding the scope of application of the cardboard.
[0022] Example 1: By Figure 1 、 2 , 3 and 4 show that a hard paperboard with a waterproof layer on its surface comprises an outer paper layer 1, the outer wall of the outer paper layer 1 is provided with a waterproof surface layer 2, a first inner paper layer 4 is provided at the bottom of the outer paper layer 1, a second paper core 5 is provided at the outer wall of the first inner paper layer 4, an insulation layer 6 is provided at the outer wall of the second paper core 5, and a puncture-proof layer 8 is provided at the bottom of the insulation layer 6;
[0023] In the specific implementation process, it is worth noting that the waterproof surface layer 2 can be made of polyethylene or other materials, and the specific material is not limited, as long as it meets the use requirements. The thermal insulation layer 6 can be made of polystyrene or other materials, and the specific material is not limited, as long as it meets the use requirements. The second paper core 5 is arched and can provide better support.
[0024] Furthermore, a first paper core 3 is provided on the outer wall of the outer paper layer 1, and the outer wall of the first paper core 3 is fixedly connected to the outer wall of the first inner paper layer 4;
[0025] In the specific implementation process, it is worth noting that the first paper core 3 is arched to provide mechanical strength between the outer paper layer 1 and the first inner paper layer 4;
[0026] Furthermore, the outer wall of the heat-insulating layer 6 is provided with a second inner paper layer 7 , and the outer wall of the second inner paper layer 7 is provided with an anti-stab layer 8 ;
[0027] In the specific implementation process, it is worth noting that the stab-proof layer 8 can be made of materials such as aramid fiber, and the specific material is not limited as long as it meets the use requirements;
[0028] Furthermore, the outer wall of the waterproof surface layer 2 is processed with positioning lines;
[0029] During the specific implementation process, it is worth noting that the positioning line can be adjusted automatically according to the actual cutting requirements to facilitate positioning cutting;
[0030] Furthermore, the outer paper layer 1, the waterproof surface layer 2, the first paper core 3, the first inner paper layer 4, the second paper core 5, the thermal insulation layer 6, the second inner paper layer 7 and the stab-proof layer 8 are all bonded together by glue;
[0031] In the specific implementation process, it is worth noting that the outer paper layer 1, the waterproof surface layer 2, the first paper core 3, the first inner paper layer 4, the second paper core 5, the thermal insulation layer 6, the second inner paper layer 7 and the stab-proof layer 8 are bonded together using strong glue, and the bonding is relatively strong;
[0032] Specifically, when using the hard cardboard with a waterproof layer on the surface, the waterproof surface layer 2 made of polyethylene or other materials can protect the outer paper layer 1 to prevent external rainwater or domestic water from soaking the outer paper layer 1, and will not affect the strength of the cardboard. The first paper core 3 and the second paper core 5 are bonded in an arched state to the outside of the outer paper layer 1, the first inner paper layer 4 and the insulation layer 6, which can provide good mechanical strength for the cardboard. The insulation layer 6 made of polystyrene or other materials can reduce the transfer of temperature between the inside and outside of the cardboard, and reduce the problem of damage to items inside the cardboard due to temperature. The second inner paper layer 7 made of aramid fiber material has a good puncture-proof effect, which prevents internal items from puncturing the cardboard and affecting the normal use of the cardboard.
[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.
[0034] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.
[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hardboard with a waterproof layer on its surface, comprising an outer paper layer (1), characterized in that: The outer wall of the outer paper layer (1) is provided with a waterproof surface layer (2), the bottom of the outer paper layer (1) is provided with a first inner paper layer (4), the outer wall of the first inner paper layer (4) is provided with a second paper core (5), the outer wall of the second paper core (5) is provided with a heat-insulating layer (6), and the bottom of the heat-insulating layer (6) is provided with an anti-puncture layer (8).
2. The hardboard with a waterproof layer on the surface according to claim 1, characterized in that: The outer wall of the outer paper layer (1) is provided with a first paper core (3), and the outer wall of the first paper core (3) is fixedly connected to the outer wall of the first inner paper layer (4).
3. The hardboard with a waterproof layer on the surface according to claim 1, characterized in that: The outer wall of the heat-insulating layer (6) is provided with a second inner paper layer (7), and the outer wall of the second inner paper layer (7) is provided with an anti-puncture layer (8).
4. The hardboard with a waterproof layer on the surface according to claim 1, characterized in that: The outer wall of the waterproof surface layer (2) is processed with a positioning line.
5. The hardboard with a waterproof layer on the surface according to claim 1, characterized in that: The outer paper layer (1), the waterproof surface layer (2), the first paper core (3), the first inner paper layer (4), the second paper core (5), the thermal insulation layer (6), the second inner paper layer (7) and the stab-proof layer (8) are all bonded together by glue.