Corrugated box with puncture-proof structure

Abstract

The utility model discloses a corrugated case with puncture -resistant structure relates to corrugated case technical field, including box wall, box bottom and lid, the box bottom fixed connection box wall bottom edge, the box wall is collapsible and connects the lid, the box wall sets up corrugated paperboard, puncture -resistant layer and corrugated paperboard in proper order from outside to inside, the inner wall of box bottom is fixed and sets up puncture -resistant bottom pad, the inner wall of lid is fixed and sets up puncture -resistant top pad. The utility model discloses through being provided with puncture -resistant layer, has realized the puncture -resistant protection function of corrugated case whole, solved the problem that corrugated case is single -structure and is easily punctured by sharp article and causes internal article damage, effectively protects internal article.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard box technology, specifically a corrugated cardboard box with a puncture-resistant structure. Background Technology

[0002] The core structure of a corrugated cardboard box is made up of face paper, liner paper, and corrugated core paper with a wavy shape, bonded together with an adhesive. The wavy shape of the corrugated core paper has certain cushioning properties and compressive strength.

[0003] The outer and inner liner of existing corrugated cardboard boxes are mostly made of ordinary kraft paper or low-grammage coated paper, while the corrugated core paper is thin corrugated base paper. The overall material has weak resistance to puncture by sharp objects. When loading metal parts with sharp edges, the edges of the parts are easily squeezed against the inner wall of the cardboard box during transportation and bumps, resulting in localized stress concentration and penetration of the cardboard box.

[0004] Patent CN215321244U discloses a high-toughness, deformation-resistant, and anti-theft corrugated cardboard with a puncture-resistant layer. The patent achieves the goal of preventing the corrugated cardboard from being punctured by sharp objects such as knives through the puncture-resistant layer, thus preventing the theft of items wrapped in the corrugated cardboard or in corrugated boxes made of corrugated cardboard. Through the setting of the buffer layer, the impact force generated when the corrugated cardboard is hit by external objects is absorbed, improving the toughness of the corrugated cardboard and preventing the corrugated cardboard from being easily deformed by impact. The aforementioned patent prevents corrugated cardboard from being punctured by sharp objects such as knives by setting a puncture-resistant layer, thus avoiding the theft of items wrapped in corrugated cardboard or items inside corrugated boxes made of such cardboard. However, it does not address the puncture protection requirements for key parts such as the bottom and lid of the corrugated box when it is used as a whole container. Furthermore, it does not solve the problem that the lack of an effective partition structure inside the box leads to the easy squeezing of items with sharp edges when loaded, and the concentrated force during transportation causing punctures to the inner wall of the box.

[0005] Therefore, this application proposes a corrugated cardboard box with a puncture-resistant structure that can achieve internal partition puncture protection and structural reinforcement. Utility Model Content

[0006] The purpose of this utility model is to provide a corrugated cardboard box with a puncture-resistant structure to solve the technical problem mentioned in the background art that the corrugated core paper has weak resistance to puncture by sharp objects, and when loading metal parts with sharp edges, the edges of the parts are easily squeezed against the inner wall of the cardboard box during transportation and bumps, resulting in localized force concentration and penetration of the cardboard box.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a corrugated cardboard box with a puncture-resistant structure, comprising a box wall, a box bottom, and a box lid. The box bottom is fixedly connected to the bottom edge of the box wall, and the box wall is foldably connected to the box lid. The box wall is provided with corrugated cardboard, a puncture-resistant layer, and another corrugated cardboard layer sequentially from the outside to the inside. A puncture-resistant bottom pad is fixedly provided on the inner wall of the box bottom, and a puncture-resistant top pad is fixedly provided on the inner wall of the box lid.

[0008] Preferably, the puncture-resistant layer includes a metal mesh layer and an elastic buffer layer, wherein the metal mesh layer is embedded and connected to the inner corrugated cardboard, and the elastic buffer layer is embedded and connected to the outer corrugated cardboard.

[0009] Preferably, the puncture-resistant base pad is provided with a base pad base layer, a fiber reinforcement layer and a base pad surface layer from top to bottom. The base pad base layer is bonded to the inner wall of the box bottom, and the fiber reinforcement layer is sandwiched between the base pad base layer and the base pad surface layer.

[0010] Preferably, the puncture-resistant top pad consists of an outer top pad layer, a puncture-resistant membrane layer, and an inner top pad layer, which are bonded and fixed sequentially from the outside to the inside, with the outer top pad layer bonded and fixed to the inner wall of the box cover.

[0011] Preferably, the inner walls of the carton are detachably connected to longitudinal partition panels and transverse partition panels, which are arranged in a cross pattern and divide the interior of the carton into four independent accommodating cavities.

[0012] Preferably, the longitudinal partition wall has first slots at both ends, and first protrusions are fixedly installed on the inner wall of the box, with the first slots engaging the first protrusions; A second slot is opened at both ends of the transverse partition panel, and a second protrusion is fixedly installed on the inner wall of the box, with the second slot engaging the second protrusion.

[0013] Preferably, a reinforcing sleeve is provided at the intersection of the longitudinal partition wall and the transverse partition wall, and weight reduction holes are provided in the longitudinal partition wall and the transverse partition wall; The puncture-resistant layer is made of fiberglass cloth and aramid fiber cloth.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by installing an anti-puncture layer, achieves the overall anti-puncture protection function of the corrugated cardboard box, solving the problem that the corrugated cardboard box is easily punctured by sharp objects due to its simple structure, thus causing damage to the internal items and effectively protecting the internal items; 2. This utility model, by installing longitudinal and transverse partitions, achieves partitioned puncture protection and structural reinforcement, solving the problem of poor puncture resistance in traditional cardboard boxes due to the lack of effective partitioning structure, and improving the safety of stored items. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the corrugated cardboard box of this utility model; Figure 2 This is a schematic diagram of the internal structure of the puncture-resistant layer of this utility model; Figure 3 This is a schematic diagram of the longitudinal partition wall and the transverse partition wall structure of this utility model; Figure 4 This is a schematic diagram of the front structure of the corrugated cardboard of this utility model; Figure 5 This is a schematic diagram of the internal structure of the puncture-resistant top pad of this utility model.

[0016] In the diagram: 1. Box wall; 2. Box bottom; 3. Box lid; 4. Corrugated cardboard; 5. Puncture-resistant layer; 6. Puncture-resistant bottom pad; 7. Puncture-resistant top pad; 8. Metal mesh layer; 9. Elastic cushioning layer; 10. Bottom pad base layer; 11. Fiber reinforcement layer; 12. Bottom pad surface layer; 13. Top pad outer layer; 14. Puncture-resistant membrane layer; 15. Top pad inner layer; 16. Longitudinal partition wall; 17. Transverse partition wall; 18. First slot; 19. First protrusion; 20. Second slot; 21. Second protrusion; 22. Reinforcing sleeve; 23. Weight reduction hole. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a corrugated cardboard box with a puncture-resistant structure, comprising a box wall 1, a box bottom 2, and a box lid 3. The box bottom 2 is fixedly connected to the bottom edge of the box wall 1, and the box wall 1 is foldably connected to the box lid 3. The box wall 1 is provided with corrugated cardboard 4, a puncture-resistant layer 5, and another corrugated cardboard 4 sequentially from the outside to the inside. A puncture-resistant bottom pad 6 is fixedly provided on the inner wall of the box bottom 2, and a puncture-resistant top pad 7 is fixedly provided on the inner wall of the box lid 3. The puncture-resistant layer 5 includes a metal mesh layer 8 and an elastic buffer layer 9. The metal mesh layer 8 is embedded and connected to the inner corrugated cardboard 4, and the elastic buffer layer 9 is embedded and connected to the outer corrugated cardboard 4. Specifically, the inner corrugations of the outer corrugated cardboard 4 are bonded to the outer surface of the elastic cushioning layer 9, and the elastic cushioning layer 9 is fixedly embedded in the inner groove of the outer corrugated cardboard 4 by water-based adhesive. The inner surface of the elastic cushioning layer 9 is bonded to the outer surface of the metal mesh layer 8, and the inner surface of the metal mesh layer 8 is bonded to the outer corrugations of the inner corrugated cardboard 4. The metal mesh layer 8 is embedded and fixed in the outer groove of the inner corrugated cardboard 4 by water-based adhesive. When a sharp object comes into contact with the box wall 1, the sharp object first contacts the outer corrugated cardboard 4. The corrugated structure of the outer corrugated cardboard 4 initially disperses the impact force. Then the impact force is transmitted to the elastic buffer layer 9. The elastic buffer layer 9 absorbs part of the impact force through its own deformation, reducing the puncture kinetic energy of the sharp object. When the remaining impact force is transmitted to the metal mesh layer 8, the mesh structure of the metal mesh layer 8 blocks the sharp object from entering. Together with the support of the inner corrugated cardboard 4, a multi-layer puncture-proof barrier is formed. The puncture-proof bottom pad 6 on the inner wall of the box bottom 2 is fixed to the box bottom 2 by full-surface bonding. The puncture-proof top pad 7 on the inner wall of the box lid 3 is also fixed by full-surface bonding. When items are placed in the box or the box lid 3 is closed, the bottom pad and the top pad provide puncture protection for the items from the bottom and top, respectively.

[0021] Please see Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a corrugated cardboard box with a puncture-resistant structure. The inner wall of the box wall 1 is detachably connected to a longitudinal partition plate 16 and a transverse partition plate 17. The longitudinal partition plate 16 and the transverse partition plate 17 are arranged crosswise and divide the interior of the cardboard box into four independent accommodating cavities. The longitudinal partition plate 16 has a first slot 18 at both ends, and a first protrusion 19 is fixedly installed on the inner wall of the box wall 1. The first slot 18 engages with the first protrusion 19. The transverse partition plate 17 has a second slot 20 at both ends, and a second protrusion 21 is fixedly installed on the inner wall of the box wall 1. The second slot 20 engages with the second protrusion 21. Specifically, the first protrusion 19 is a cuboid block structure, which is vertically fixed to the inner wall of the box wall 1. The height of the first protrusion 19 is adapted to the thickness of the longitudinal partition plate 16. The first slots 18 at both ends of the longitudinal partition plate 16 are grooves adapted to the first protrusion 19, and the depth of the grooves is slightly greater than the height of the first protrusion 19. During installation, the first slots 18 at both ends of the longitudinal partition 16 are aligned with the first protrusions 19 on the inner wall of the box wall 1, and pressure is applied in a direction perpendicular to the box wall 1 to make the first protrusions 19 fully embedded in the first slots 18, thereby fixing the longitudinal partition 16. The installation of the transverse partition 17 is achieved by fitting and fixing the second protrusions 21 with the second slots 20. The longitudinal partition 16 and the transverse partition 17 each have a matching cross-shaped notch in the middle. The width of the notch in the transverse partition 17 is the same as the thickness of the longitudinal partition 16, and the width of the notch in the longitudinal partition 16 is the same as the thickness of the transverse partition 17. When installed crosswise, the notches of the two boards fit together to form a stable cross structure, dividing the inside of the carton into four independent compartments. Each compartment is surrounded by the box wall 1, the longitudinal partition 16, and the transverse partition 17, respectively, to achieve the classified placement of items.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 One embodiment of this utility model is a corrugated cardboard box with a puncture-resistant structure. A reinforcing sleeve 22 is fitted at the intersection of the longitudinal partition plate 16 and the transverse partition plate 17. Weight reduction holes 23 are opened in the longitudinal partition plate 16 and the transverse partition plate 17. The puncture-resistant layer 5 is made of glass fiber cloth and aramid fiber cloth. The inner wall of the box wall 1 is detachably connected to the longitudinal partition plate 16 and the transverse partition plate 17 respectively. The longitudinal partition plate 16 and the transverse partition plate 17 are arranged crosswise and separate the interior of the cardboard box into four independent cavities. Specifically, the reinforcing sleeve 22 has a cross-shaped hollow structure. The size of the cross channel inside the reinforcing sleeve 22 is adapted to the thickness of the longitudinal partition plate 16 and the transverse partition plate 17. When the longitudinal partition plate 16 and the transverse partition plate 17 are interlocked, the reinforcing sleeve 22 is inserted from the top of the intersection until the bottom of the reinforcing sleeve 22 contacts the bottom of the box 2. The inner wall of the reinforcing sleeve 22 is attached to the outer wall of the two plates and fixed by friction, which enhances the structural strength at the intersection and prevents the two plates from deforming or separating when subjected to force. The weight-reducing holes 23 opened in the longitudinal partition plate 16 and the transverse partition plate 17 are circular through holes, which are evenly distributed in the non-intersecting areas of the two plates. The edges of the holes are rounded, which reduces the overall weight of the partition plate and avoids stress concentration. The puncture-resistant layer 5 inside the box wall 1 is composed of fiberglass cloth and aramid fiber cloth stacked together. The fiberglass cloth is close to the outer corrugated cardboard 4, and the aramid fiber cloth is close to the inner corrugated cardboard 4. The two layers of fiber cloth are fixed together with adhesive. The warp and weft interlacing structure of the fiber cloth can disperse the puncture force of sharp objects. Combined with the support of the corrugated cardboard 4, it improves the puncture resistance of the box wall 1. The longitudinal partition 16 and the transverse partition 17 are sandwiched with puncture-resistant layers of the same material to ensure that each independent accommodating cavity also has puncture resistance.

[0023] Please see Figure 1 , Figure 2 and Figure 5 The present invention provides an embodiment of a corrugated cardboard box with a puncture-resistant structure. The puncture-resistant bottom pad 6 is provided with a bottom pad base layer 10, a fiber reinforcement layer 11, and a bottom pad surface layer 12 in sequence from top to bottom. The bottom pad base layer 10 is bonded to the inner wall of the box bottom 2, and the fiber reinforcement layer 11 is sandwiched between the bottom pad base layer 10 and the bottom pad surface layer 12. The puncture-resistant top pad 7 is provided with a top pad outer layer 13, a puncture-resistant film layer 14, and a top pad inner layer 15 in sequence from the outside to the inside. The top pad outer layer 13 is bonded to the inner wall of the box cover 3. Specifically, the base layer 10 of the puncture-resistant base pad 6 is made of cardboard. The lower surface of the base layer 10 is bonded to the inner wall of the box bottom 2 with hot melt adhesive, and the upper surface is bonded to the lower surface of the fiber reinforcement layer 11. The fiber reinforcement layer 11 is a multi-layer interwoven polyester fiber mesh. Each layer of fiber mesh is fixed with glue to form a three-dimensional mesh structure. The upper surface of the fiber reinforcement layer 11 is bonded to the lower surface of the base pad surface layer 12. The base pad surface layer 12 is a wear-resistant paper layer. When the items inside the box are placed on the puncture-resistant bottom pad 6, the weight of the items is transferred to the fiber reinforcement layer 11 through the bottom pad surface layer 12. The three-dimensional mesh structure of the fiber reinforcement layer 11 disperses the pressure through the mutual pulling between the fibers. At the same time, when there is a sharp object piercing upwards at the bottom, the fiber interlacing structure of the fiber reinforcement layer 11 blocks the sharp object from penetrating. Combined with the bottom pad base layer 10 and the bottom pad surface layer 12, a bottom puncture-resistant barrier is formed. The outer layer 13 of the puncture-resistant top pad 7 is a cardboard adapted to the inner wall of the lid 3 and is bonded to the inner wall of the lid 3 with glue. The lower surface of the outer layer 13 is bonded to the upper surface of the puncture-resistant film layer 14. The puncture-resistant film layer 14 is a polyamide film with puncture resistance. The lower surface of the puncture-resistant film layer 14 is bonded to the upper surface of the inner layer 15 of the top pad, which is made of foam. When the lid 3 is closed, the inner layer 15 of the top pad comes into contact with the items inside the box first and cushions the pressure through its own deformation. The puncture-resistant film layer 14 forms a barrier layer between the inner layer 15 and the outer layer 13 of the top pad to prevent sharp objects from the top from puncturing the items inside the box.

[0024] Working principle: When a sharp object is applied to a corrugated cardboard box, it first contacts the outer corrugated cardboard of the box wall. The flute structure of the outer corrugated cardboard initially disperses the impact force of the sharp object. Then, the impact force is transferred to the elastic buffer layer inside the box wall. The elastic buffer layer absorbs part of the impact force through its own deformation, reducing the puncture kinetic energy of the sharp object. The remaining impact force is transferred to the metal mesh layer, which together form a multi-layered puncture-resistant barrier at the box wall to resist the risk of external puncture.

[0025] Inside the carton, pressure is applied by aligning the first slots at both ends of the longitudinal partition panels with the first protrusions on the inner wall of the carton, and aligning the second slots at both ends of the transverse partition panels with the second protrusions on the inner wall of the carton, so that the protrusions are embedded into the slots. Then, the longitudinal and transverse partition panels are fitted together through the cross-shaped notch in the middle to form a stable cross-shaped structure, dividing the inside of the carton into four independent compartments for the classified placement of items. Next, a cross-shaped reinforcing sleeve is fitted at the intersection of the two panels. The reinforcing sleeve enhances the structural strength at the intersection through the friction between the inner wall and the outer wall of the partition panel, preventing the partition panels from deforming or separating under stress. At the same time, the puncture-resistant layer sandwiched inside the longitudinal and transverse partition panels ensures that each independent compartment also has puncture resistance, reducing the risk of puncture caused by the mutual squeezing and collision of items.

[0026] For the top and bottom of the carton, the puncture-resistant bottom pad on the inner wall of the bottom is fixed to the bottom of the carton by bonding the bottom pad base layer to the bottom of the carton. When the contents of the carton are placed on the bottom pad, the surface layer of the bottom pad transfers the weight of the contents to the fiber reinforcement layer. The three-dimensional mesh structure of the fiber reinforcement layer disperses the pressure through the tension between the fibers. If there is a sharp object piercing upwards from the bottom, the interwoven structure of the fiber reinforcement layer will prevent it from penetrating. Combined with the bottom pad base layer and the surface layer, a puncture-resistant barrier is formed at the bottom. The puncture-resistant top pad on the inner wall of the carton lid is fixed to the carton lid by bonding the outer layer of the top pad to the carton lid. When the carton lid is closed, the inner layer of the top pad contacts the contents of the carton. It buffers the pressure through its own deformation. The puncture-resistant film layer inside the top pad forms a barrier layer between the inner and outer layers of the top pad, preventing sharp objects from the top from piercing through.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrugated cardboard box with a puncture-resistant structure, characterized in that: The box includes a box wall (1), a box bottom (2) and a box lid (3). The box bottom (2) is fixedly connected to the bottom edge of the box wall (1). The box wall (1) is foldable and connected to the box lid (3). The box wall (1) is provided with corrugated cardboard (4), a puncture-resistant layer (5) and corrugated cardboard (4) in sequence from the outside to the inside. The box bottom (2) is fixedly provided with a puncture-resistant bottom pad (6) on the inner wall. The box lid (3) is fixedly provided with a puncture-resistant top pad (7) on the inner wall.

2. A corrugated cardboard box with a puncture-resistant structure according to claim 1, characterized in that: The puncture-resistant layer (5) includes a metal mesh layer (8) and an elastic buffer layer (9). The metal mesh layer (8) is embedded and connected to the inner corrugated cardboard (4), and the elastic buffer layer (9) is embedded and connected to the outer corrugated cardboard (4).

3. A corrugated cardboard box with a puncture-resistant structure according to claim 1, characterized in that: The puncture-resistant base pad (6) is provided with a base pad base layer (10), a fiber reinforcement layer (11) and a base pad surface layer (12) from top to bottom. The base pad base layer (10) is bonded to the inner wall of the box bottom (2), and the fiber reinforcement layer (11) is sandwiched between the base pad base layer (10) and the base pad surface layer (12).

4. A corrugated cardboard box with a puncture-resistant structure according to claim 1, characterized in that: The puncture-proof top pad (7) is sequentially bonded and fixed with an outer top pad layer (13), an anti-puncture membrane layer (14), and an inner top pad layer (15) from the outside to the inside. The outer top pad layer (13) is bonded and fixed to the inner wall of the box cover (3).

5. A corrugated cardboard box with a puncture-resistant structure according to claim 1, characterized in that: The inner wall of the box (1) is detachably connected to the longitudinal partition plate (16) and the transverse partition plate (17). The longitudinal partition plate (16) and the transverse partition plate (17) are arranged in a cross manner and divide the inside of the carton into four independent accommodating cavities.

6. A corrugated cardboard box with a puncture-resistant structure according to claim 5, characterized in that: The longitudinal partition wall (16) has a first slot (18) at both ends, and a first protrusion (19) is fixedly installed on the inner wall of the box wall (1). The first slot (18) engages with the first protrusion (19). A second slot (20) is opened at both ends of the transverse partition (17), and a second protrusion (21) is fixedly installed on the inner wall of the box wall (1). The second slot (20) engages with the second protrusion (21).

7. A corrugated cardboard box with a puncture-resistant structure according to claim 5, characterized in that: A reinforcing sleeve (22) is fitted at the intersection of the longitudinal partition wall (16) and the transverse partition wall (17), and weight reduction holes (23) are opened in the longitudinal partition wall (16) and the transverse partition wall (17). The puncture-resistant layer (5) is made of glass fiber cloth and aramid fiber cloth.

Images