A multi-layer reinforced protective packaging carton

Abstract

The utility model discloses a multilayer reinforced protection type packing carton, including the box body, the top of box body is provided with the box cover, the box body and box cover all include white cardboard layer, the surface fixedly connected with corrugated paperboard layer of white cardboard layer, one side of corrugated paperboard layer is provided with first function layer, first function layer includes honeycomb paperboard layer and EVA bubble cotton layer, one side of first function layer is provided with second function layer. The utility model discloses through setting up corrugated paperboard layer, utilizes the mechanical characteristic of corrugated structure, promotes the compression strength and the bending resistance of packing, supports the stacking weight, disperses external pressure, reduces local stress deformation, especially suitable for heavy object packing or transportation scene, through setting up honeycomb paperboard layer, the honeycomb three -dimensional structure provides excellent compression resistance and impact resistance, effectively absorbs external impact force, light in weight but high in strength, can promote the protection effect under the premise of not increasing packing weight, is suitable for transportation scene.

Description

Technical Field

[0001] This utility model relates to the field of packaging paper box technology, specifically a multi-layer reinforced protective packaging paper box. Background Technology

[0002] Packaging boxes are containers made primarily of paper, manufactured through processes such as design, cutting, folding, and gluing. They possess a specific shape and structure and are used to contain, protect, and hold goods. They typically feature foldability, ease of processing, low cost, and environmental friendliness, and are widely used in numerous fields including food, pharmaceuticals, electronics, and daily necessities.

[0003] In practical applications, existing packaging boxes suffer from insufficient structural strength due to the single material. They are prone to deformation when subjected to external impacts, leading to damage. Due to the lack of a synergistic reinforcement mechanism of multiple materials, they cannot disperse stress through the buffering and support between materials when subjected to impact, causing local structures to deform rapidly due to stress concentration, and in severe cases, directly break, making it difficult to provide effective protection for the contents. Therefore, we propose a multi-layer reinforced protective packaging box. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a multi-layer reinforced protective packaging box. This box possesses the advantages of multi-layer reinforcement and solves the problem that existing packaging boxes, due to their single material composition, suffer from insufficient structural strength. When subjected to external impacts, they are prone to deformation, leading to damage. Furthermore, the lack of a synergistic reinforcement mechanism among the multiple materials prevents stress dispersion through buffering and support between materials when subjected to impacts, causing localized structural deformation due to concentrated stress, and in severe cases, direct breakage, making it difficult to effectively protect the contents.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer reinforced protective packaging box, comprising a box body, a box lid on the top of the box body, both the box body and the box lid comprising a white cardboard layer, a corrugated cardboard layer fixedly connected to the surface of the white cardboard layer, a first functional layer on one side of the corrugated cardboard layer, the first functional layer comprising a honeycomb cardboard layer and an EVA foam layer, a second functional layer on one side of the first functional layer, the second functional layer comprising a polyurethane coating layer and an organosilicon modified acrylic coating layer.

[0006] Preferably, triangular seats are fixedly connected to the four corners of the inner wall of the box, triangular blocks are fixedly connected to the four corners of the bottom of the box lid, and reinforcing rods are fixedly connected to the outer side of the box.

[0007] Preferably, the honeycomb paperboard layer is fixedly connected to one side of the corrugated paperboard layer, and the EVA foam layer is fixedly connected to one side of the honeycomb paperboard layer.

[0008] Preferably, the polyurethane coating layer is applied to one side of the first functional layer, and the silicone-modified acrylic coating layer is applied to one side of the polyurethane coating layer.

[0009] Preferably, the top of the triangular base is provided with an insertion hole, and the bottom of the triangular block is fixedly connected with an insertion rod.

[0010] Preferably, the honeycomb paperboard layer and the EVA foam layer have the same thickness, and the polyurethane coating layer and the silicone-modified acrylic coating layer have the same thickness.

[0011] Compared with the prior art, this utility model provides a multi-layer reinforced protective packaging box, which has the following beneficial effects:

[0012] 1. This utility model, by incorporating a corrugated cardboard layer, utilizes the mechanical properties of the corrugated structure to enhance the packaging's compressive strength and bending resistance, supporting stacked weight, dispersing external pressure, and reducing localized deformation. It is particularly suitable for heavy-duty packaging or transportation scenarios. The honeycomb cardboard layer, with its three-dimensional honeycomb structure, provides excellent compressive and impact resistance, effectively absorbing external impact forces. It is lightweight yet high-strength, improving protective effects without increasing packaging weight, making it suitable for transportation scenarios. The EVA foam layer, a highly elastic cushioning material, absorbs vibrations and impacts from all directions, has good toughness, and conforms to the contours of the item. The gaps reduce shaking and friction during transportation, while also providing some heat insulation and moisture protection, thus enhancing the packaging's environmental adaptability. A polyurethane coating layer forms a dense waterproof membrane, preventing moisture from penetrating the internal materials and avoiding the cardboard from softening due to moisture. Its high abrasion resistance resists friction and scratches during transportation, protecting the inner structure from damage. The silicone-modified acrylic coating layer provides UV aging resistance, making it suitable for outdoor transportation. It also enhances surface hardness and abrasion resistance, further resisting friction from sharp objects and extending the packaging's lifespan. Furthermore, it is water-resistant and resistant to weak acid and alkali corrosion, improving the packaging's stability in humid or mildly chemically polluted environments.

[0013] 2. The insertion rod and insertion hole of this utility model can achieve precise positioning and firm connection between the box body and the box lid, preventing them from falling off during transportation. The triangular base and triangular block can enhance the impact resistance of the corners and reduce the deformation of the corners caused by collisions. The reinforcing rod can improve the compression resistance of the packaging, which is especially suitable for stacked storage scenarios, dispersing external pressure, preventing the box body from collapsing due to uneven force, and enhancing the overall structural stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a cross-sectional view of the box body of this utility model;

[0017] Figure 4 This is a cross-sectional view of the first functional layer of this utility model;

[0018] Figure 5 This is a cross-sectional view of the second functional layer of this utility model.

[0019] In the diagram: 1. Box body; 11. White cardboard layer; 12. Corrugated cardboard layer; 13. First functional layer; 131. Honeycomb cardboard layer; 132. EVA foam layer; 14. Second functional layer; 141. Polyurethane coating layer; 142. Silicone-modified acrylic coating layer; 2. Box lid; 3. Triangular base; 4. Insertion hole; 5. Reinforcing rod; 6. Triangular block; 7. Insert rod. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example 1:

[0023] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, this utility model provides a multi-layer reinforced protective packaging box, including a box body 1, a box lid 2 on the top of the box body 1, and both the box body 1 and the box lid 2 include a white cardboard layer 11. A corrugated cardboard layer 12 is fixedly connected to the surface of the white cardboard layer 11. A first functional layer 13 is provided on one side of the corrugated cardboard layer 12, the first functional layer 13 including a honeycomb cardboard layer 131 and an EVA foam layer 132. A second functional layer 14 is provided on one side of the first functional layer 13, the second functional layer 14 including a polyurethane coating layer 141 and... The silicone-modified acrylic coating layer 142 and the honeycomb paperboard layer 131 are fixedly connected to one side of the corrugated paperboard layer 12. The EVA foam layer 132 is fixedly connected to one side of the honeycomb paperboard layer 131. The polyurethane coating layer 141 is coated on one side of the first functional layer 13. The silicone-modified acrylic coating layer 142 is coated on one side of the polyurethane coating layer 141. The honeycomb paperboard layer 131 and the EVA foam layer 132 have the same thickness. The polyurethane coating layer 141 and the silicone-modified acrylic coating layer 142 have the same thickness.

[0024] The specific functions of this technical solution are as follows: By setting the corrugated cardboard layer 12, the mechanical properties of the corrugated structure are utilized to improve the compressive strength and bending resistance of the packaging, support the stacked weight, distribute external pressure, and reduce localized deformation. It is especially suitable for heavy-duty packaging or transportation scenarios. By setting the honeycomb cardboard layer 131, the honeycomb three-dimensional structure provides excellent compressive and impact resistance, effectively absorbing external impact forces. It is lightweight yet high-strength, improving the protective effect without increasing the packaging weight, making it suitable for transportation scenarios. By setting the EVA foam layer 132, a highly elastic cushioning material, it can absorb vibrations and impacts from all directions. It has good toughness and can conform to the wheels of the goods. The filling of gaps reduces shaking and friction during transportation, while also providing some heat insulation and moisture protection, thus enhancing the packaging's environmental adaptability. By setting a polyurethane coating layer 141, a dense waterproof membrane is formed, preventing moisture from penetrating into the internal materials and avoiding the cardboard from becoming damp and soft. Its high abrasion resistance can resist friction and scratches during transportation, protecting the inner structure from damage. By setting an organosilicon-modified acrylic coating layer 142, it has resistance to ultraviolet aging, making it suitable for outdoor transportation. It also enhances surface hardness and abrasion resistance, further resisting friction from sharp objects, extending the packaging's service life, and is resistant to water and weak acid and alkali corrosion, improving the packaging's stability in humid or mildly chemically polluted environments.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figure 1 and Figure 2 As shown, triangular bases 3 are fixedly connected to the four corners of the inner wall of the box body 1, triangular blocks 6 are fixedly connected to the four corners of the bottom of the box cover 2, reinforcing rods 5 are fixedly connected to the outer side of the box body 1, insertion holes 4 are opened on the top of the triangular bases 3, and insertion rods 7 are fixedly connected to the bottom of the triangular blocks 6.

[0027] The specific functions of this technical solution are as follows: the insertion rod 7 and the insertion hole 4 work together to achieve precise positioning and firm connection between the box body 1 and the box cover 2, preventing them from falling off during transportation; the triangular seat 3 and the triangular block 6 can enhance the impact resistance at the corners and reduce the deformation of the corners caused by collisions; the reinforcing rod 5 can improve the compression resistance of the packaging, making it especially suitable for stacked storage scenarios, dispersing external pressure, preventing the box body 1 from collapsing due to uneven force, and enhancing the overall structural stability.

[0028] Working principle: By setting up corrugated cardboard layer 12, the mechanical properties of the corrugated structure are utilized to improve the packaging's compressive strength and bending resistance, support the stacked weight, distribute external pressure, and reduce localized deformation. It is especially suitable for heavy-duty packaging or transportation scenarios. By setting up honeycomb cardboard layer 131, the honeycomb three-dimensional structure provides excellent compressive and impact resistance, effectively absorbing external impact forces. It is lightweight yet high-strength, improving the protective effect without increasing the packaging weight, making it suitable for transportation scenarios. By setting up EVA foam layer 132, a highly elastic cushioning material, it can absorb vibrations and impacts from all directions. It has good toughness and can conform to the contours of the items for filling. The gaps reduce shaking and friction during transportation, while also providing some heat insulation and moisture protection, thus enhancing the packaging's environmental adaptability. By setting a polyurethane coating layer 141, a dense waterproof membrane is formed, preventing moisture from penetrating into the internal materials and avoiding the cardboard from becoming damp and soft. Its high abrasion resistance can resist friction and scratches during transportation, protecting the inner structure from damage. By setting an organosilicon-modified acrylic coating layer 142, it has resistance to ultraviolet aging, making it suitable for outdoor transportation. It also enhances surface hardness and abrasion resistance, further resisting friction from sharp objects and extending the packaging's service life. It is also resistant to water and weak acid and alkali corrosion, improving the packaging's stability in humid or mildly chemically polluted environments.

[0029] The insertion rod 7 and the insertion hole 4 work together to achieve precise positioning and firm connection between the box body 1 and the box lid 2, preventing them from falling off during transportation. The triangular base 3 and the triangular block 6 can enhance the impact resistance at the corners and reduce the deformation of the corners caused by collisions. The reinforcing rod 5 can improve the compression resistance of the packaging, making it especially suitable for stacked storage scenarios. It can disperse external pressure, prevent the box body 1 from collapsing due to uneven force, and enhance the overall structural stability.

[0030] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0031] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A multi-layer reinforced protective packaging box, comprising a box body (1), characterized in that: The top of the box body (1) is provided with a box cover (2). Both the box body (1) and the box cover (2) include a white cardboard layer (11). A corrugated cardboard layer (12) is fixedly connected to the surface of the white cardboard layer (11). A first functional layer (13) is provided on one side of the corrugated cardboard layer (12). The first functional layer (13) includes a honeycomb cardboard layer (131) and an EVA foam layer (132). A second functional layer (14) is provided on one side of the first functional layer (13). The second functional layer (14) includes a polyurethane coating layer (141) and an organosilicon modified acrylic coating layer (142).

2. The multi-layer reinforced protective packaging box according to claim 1, characterized in that: Triangular seats (3) are fixedly connected to the four corners of the inner wall of the box (1), triangular blocks (6) are fixedly connected to the four corners of the bottom of the box cover (2), and reinforcing rods (5) are fixedly connected to the outer side of the box (1).

3. A multi-layer reinforced protective packaging box according to claim 1, characterized in that: The honeycomb paperboard layer (131) is fixedly connected to one side of the corrugated paperboard layer (12), and the EVA foam layer (132) is fixedly connected to one side of the honeycomb paperboard layer (131).

4. A multi-layer reinforced protective packaging box according to claim 1, characterized in that: The polyurethane coating layer (141) is applied to one side of the first functional layer (13), and the silicone-modified acrylic coating layer (142) is applied to one side of the polyurethane coating layer (141).

5. A multi-layer reinforced protective packaging box according to claim 2, characterized in that: The top of the triangular base (3) is provided with a socket (4), and the bottom of the triangular block (6) is fixedly connected with a plug (7).

6. A multi-layer reinforced protective packaging box according to claim 1, characterized in that: The honeycomb paperboard layer (131) and the EVA foam layer (132) have the same thickness, and the polyurethane coating layer (141) and the silicone-modified acrylic coating layer (142) have the same thickness.

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