A packaging carton structure with built-in cushioning

Abstract

This utility model relates to the field of packaging carton technology, and in particular to a packaging carton structure with built-in cushioning, including a carton body. The carton body is characterized by being made of corrugated cardboard, with its top, side walls, and bottom integrally formed by fold lines. Pre-pressed crease lines are provided at the junctions of the top, side walls, and bottom of the carton body, with arc-shaped transition areas on both sides of the crease lines. Foldable covers are provided at both the top and bottom of the carton body, and a supporting reinforcement structure is provided around the inner wall of the carton body. This built-in cushioning packaging carton structure improves production efficiency and durability through an integrated folding design; the pre-pressed creases and arc-shaped transition areas enhance the carton body's resistance to deformation; L-shaped supports at the four corners and center, combined with cushioning panels and inflatable airbags, form multi-level cushioning protection, conforming to the contours of items to prevent slippage and suitable for transporting fragile goods; a wavy groove at the bottom disperses pressure, and a removable partition allows for flexible partitioning and securing of items.

Description

Technical Field

[0001] This utility model relates to the field of packaging carton technology, and in particular to a packaging carton structure with built-in cushioning. Background Technology

[0002] In the field of modern logistics and commodity packaging, cardboard boxes serve as the core carrier for the transportation and storage of goods, and must balance lightweight, compression resistance, and cushioning protection. Although traditional corrugated cardboard boxes provide basic protection through multi-layer cardboard structures, their structural design has obvious shortcomings: the boxes are mostly fixed, resulting in low folding and sealing efficiency, and the inner walls lack targeted cushioning structures, relying solely on the overall strength of the cardboard to resist impacts. This makes them susceptible to damage to goods (especially fragile items or precision equipment) during transportation due to collisions, squeezing, or stacking. In addition, the internal space of traditional cardboard boxes is simply divided, making it unsuitable for items of different shapes or requiring categorized storage, and the corners are weak in compression resistance, making them prone to deformation and collapse when stacked for a long time.

[0003] Chinese patent discloses a corrugated cardboard box (publication number: CN 218559681 U) including a cardboard box body. The cardboard box body includes an outer paper on the surface of the cardboard box body and an outer corrugated core paper fixed to the outer paper. The outer paper has a rectangular labeling area and several easy-tear punching holes along the edge of the labeling area. The outer paper includes easy-tear paper formed by being divided by several easy-tear punching holes. The outer corrugated core paper is bonded to the outer paper except for the easy-tear paper. However, this type of cardboard box cannot simultaneously meet the requirements of efficient packaging, pressure resistance and protection, and flexible adaptation to diverse items. Therefore, a packaging cardboard box structure with built-in cushioning is needed. Utility Model Content

[0004] The purpose of this invention is to solve the problems that traditional cardboard boxes in the prior art cannot simultaneously meet the needs of efficient packaging, pressure resistance and protection and flexible adaptation to a variety of items, and to propose a packaging cardboard box structure with built-in cushioning.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A packaging carton structure with built-in cushioning, comprising a carton body, characterized in that: the carton body is made of corrugated cardboard; the top, side walls, and bottom of the carton body are integrally formed by folding lines; pre-pressed crease lines are provided at the connection points of the top, side walls, and bottom of the carton body; arc-shaped transition areas are provided on both sides of the crease lines; foldable covers are provided at both the top and bottom of the carton body; and a supporting reinforcement structure is provided around the inner wall of the carton body. Integral folding reduces assembly steps and improves production efficiency; the pre-pressed crease lines and arc-shaped transition areas make the carton body fold and unfold more smoothly, avoiding cardboard cracking caused by forced bending and extending its service life; the foldable covers simplify sealing operations, allowing for quick closure without additional tape or tools; and the inner wall support structure enhances the overall rigidity of the carton body, making it less prone to deformation during stacking or transportation.

[0006] Preferably, the supporting reinforcement structure comprises L-shaped cardboard supports located at the four corners and center of the box. One side of each L-shaped cardboard support has a buffer panel, and one side of the buffer panel has an inflatable cushioning airbag. The L-shaped cardboard supports fit snugly against the corners of the box, providing targeted protection for the corners most susceptible to stress during transport, reducing damage to the box caused by collisions. The buffer panel wraps around the inner sidewall of the box, forming a continuous lateral buffer layer to mitigate direct collisions between items and the box. The inflatable cushioning airbag absorbs impact energy through air pressure, making it particularly suitable for protecting vibration-sensitive items (such as precision instruments or glassware), further reducing the risk of damage during transport.

[0007] Preferably, the bottom of the inner wall of the box is provided with a wavy groove, the distance between the crests and troughs of the wavy groove is 1-2 cm, and the depth is 0.3-0.8 cm. The wavy groove disperses the pressure on the bottom of the item through its undulating structure, avoiding localized damage caused by concentrated force, enhancing the stability of the item, and preventing the item from sliding or tipping over during transportation.

[0008] Preferably, the box has a removable partition at its center, and the removable partition is connected to the inner wall of the box with a slot. The partition divides the internal space of the box into multiple independent areas, preventing items from colliding or being squeezed together; the removable design allows the partition to be flexibly adjusted or removed according to the number and size of the items, adapting to different packaging requirements and improving versatility.

[0009] Preferably, the inflatable cushioning airbag has an elliptical airbag structure and an anti-slip texture on its surface, and the height of the inflatable cushioning airbag is 0.5-1.5cm. The elliptical airbag better conforms to the contours of irregularly shaped items, reducing cushioning dead corners; the anti-slip texture increases the friction between the airbag and the surface of the item, preventing the item from shifting or the airbag from sliding during transportation, ensuring stable cushioning effect; the thin airbag design avoids occupying too much internal space, while meeting the requirements of lightweight design, making it especially suitable for scenarios where packaging volume is sensitive.

[0010] Preferably, the corrugated cardboard is a single-layer B-type corrugated cardboard with a basis weight of 120-150 g / m², a flute height of 2.5-3.5 mm, and a flute pitch of 4-6 mm. The corrugated structure of the B-type corrugation ensures lightweight cardboard while providing moderate compressive strength and resilience, capable of withstanding stacked weight and absorbing some impact energy under pressure. The single-layer corrugated structure simplifies the production process, reduces costs, and meets the protection requirements of conventional transportation scenarios, avoiding resource waste caused by excessive packaging.

[0011] The advantages of this utility model are:

[0012] This application's packaging carton structure significantly enhances overall protective performance and ease of use through innovative design: the integrated folding and forming method eliminates the need for complex tools or adhesive steps for unfolding and sealing the carton, greatly improving production efficiency and reducing operational difficulty; the design of pre-compression creases and curved transition areas further ensures that the carton is not prone to cracking or deformation during repeated folding, extending the service life of the packaging material; the L-shaped cardboard supports around the inner walls fit snugly against the four corners and key stress areas in the center of the carton, specifically enhancing the corner compression resistance and preventing the carton from collapsing due to collisions during transportation; and the multi-level cushioning system, combining the support components with the buffer panels and inflatable airbags, can disperse and absorb pressure from multiple sources. Impact energy from all directions, especially the elliptical structure and anti-slip texture of the inflatable airbags, can closely conform to the contours of irregular items and lock them in place, significantly reducing the risk of vibration and slippage. It is especially suitable for transporting fragile items such as precision instruments or glass products. The wavy grooves on the bottom of the box disperse the pressure on the bottom of the items through periodic undulations. Combined with the flexible partition function of the removable dividers, it can not only meet the bottom fixing requirements of bottles and cans, but also allow for the independent storage of irregularly shaped or classified items to avoid collisions. The corrugated cardboard uses a B-type single-layer structure with a weight and flute height that is compatible with the weight, providing balanced compression resistance and resilience while ensuring lightweight design, avoiding resource waste caused by over-packaging. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0015] Figure 2 This utility model Figure 1 Enlarged view of I in the middle.

[0016] Figure 3 This utility model Figure 1 Enlarged view of section III.

[0017] Figure 4 This utility model Figure 1 A magnified view of the middle V.

[0018] Figure 5 This is a schematic diagram of the left-side structure of this utility model.

[0019] In the diagram: 1. Box body; 2. Divider; 3. Foldable cover; 4. Pre-compression crease line; 5. Arc-shaped transition area; 6. Inflatable cushioning airbag; 7. Cushioning panel; 8. L-shaped cardboard support; 9. Card slot; 10. Wavy groove. 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 scope of protection of the present utility model. Example

[0021] Please see Figure 1-5 As shown, a packaging carton structure with built-in cushioning includes a carton body 1. The carton body 1 is made of corrugated cardboard. The top, side walls, and bottom of the carton body 1 are integrally formed by fold lines. Pre-compression crease lines 4 are provided at the junctions of the top, side walls, and bottom of the carton body 1. Arc-shaped transition areas 5 are provided on both sides of the crease lines. Foldable cover plates 3 are provided at both the top and bottom of the carton body 1. Supporting and reinforcing structures are provided around the inner walls of the carton body 1. The integral folding process reduces assembly steps and improves production efficiency. The pre-compression crease lines 4 and arc-shaped transition areas 5 make the carton body 1 fold and unfold more smoothly, avoiding cardboard cracking caused by forced bending and extending its service life. The foldable cover plates 3 simplify the sealing operation, allowing for quick closure without additional tape or tools. The inner wall support structure enhances the overall rigidity of the carton body 1, making it less prone to deformation during stacking or transportation.

[0022] In this embodiment, the supporting reinforcement structure is located at the four corners and the middle of the box body 1, with L-shaped cardboard support members 8. A buffer panel 7 is provided on one side of the L-shaped cardboard support member 8, and an inflatable buffer airbag 6 is provided on one side of the buffer panel 7. The L-shaped cardboard support member 8 fits snugly against the corners of the box body 1, providing targeted protection for the corners that are prone to stress during transportation, reducing damage to the box body 1 caused by collisions. The buffer panel 7 wraps around the inner sidewall of the box body 1, forming a continuous lateral buffer layer to alleviate direct collisions between items and the box body 1. The inflatable buffer airbag 6 absorbs impact energy through air pressure, making it particularly suitable for protecting vibration-sensitive items (such as precision instruments or glass products), further reducing the risk of damage during transportation.

[0023] In this embodiment, the bottom of the inner wall of the box 1 is provided with a wavy groove 10. The distance between the crests and troughs of the wavy groove 10 is 1-2 cm, and the depth is 0.3-0.8 cm. The wavy groove 10 disperses the pressure on the bottom of the item through its undulating structure, avoiding localized damage caused by concentrated force, enhancing the stability of the item, and preventing the item from sliding or tipping over during transportation.

[0024] In this embodiment, a detachable partition 2 is provided at the center of the interior of the box 1, and a slot 9 is provided at the connection between the detachable partition 2 and the inner wall of the box 1. The partition 2 divides the interior space of the box into multiple independent areas to prevent items from colliding or being squeezed together; the detachable design allows the partition 2 to be flexibly adjusted or removed according to the number and size of the items, adapting to different packaging requirements and improving versatility.

[0025] In this embodiment, the inflatable cushioning airbag 6 is an elliptical airbag structure with an anti-slip texture on its surface, and the height of the inflatable cushioning airbag 6 is 0.5-1.5cm. The elliptical airbag better conforms to the contours of irregularly shaped items, reducing cushioning dead corners; the anti-slip texture increases the friction between the airbag and the surface of the item, preventing the item from shifting or the airbag from sliding during transportation, ensuring stable cushioning effect; the thin airbag design avoids occupying too much internal space while meeting the requirements of lightweight design, making it especially suitable for scenarios where packaging volume is sensitive.

[0026] In this embodiment, the corrugated cardboard is a single-layer B-type corrugated cardboard with a basis weight of 120-150 g / m², a flute height of 2.5-3.5 mm, and a flute pitch of 4-6 mm. The corrugated structure of the B-type corrugation ensures lightweight cardboard while providing moderate compressive strength and resilience, capable of withstanding stacked weight and absorbing some impact energy under pressure. The single-layer corrugated structure simplifies the production process, reduces costs, and meets the protection requirements of conventional transportation scenarios, avoiding resource waste caused by excessive packaging.

[0027] The implementation principle of this embodiment is as follows:

[0028] Step 1: Quickly seal the cardboard box

[0029] When packing items, the operator first unfolds the flat corrugated cardboard into a three-dimensional box shape 1 along the pre-pressed crease lines on the top, side, and bottom surfaces of the box. During this process, the arc-shaped transition areas 5 on both sides of the crease lines allow the cardboard to bend naturally, preventing cracking due to excessive force. After unfolding, the foldable top and bottom covers 3 fold down to directly cover the opening of the box 1.

[0030] Step 2: Pressure Protection

[0031] When cardboard boxes are stacked or impacted, the impact force will first act on the corners and sides of the box body 1. At this time, the L-shaped cardboard supports 8 located at the four corners and the middle of the box body 1 will play their role first, distributing the pressure to the entire cardboard structure and preventing the corners from denting and deforming. If the impact force is relatively large, the buffer plate 7 connected behind the support will further absorb some energy through its own bending deformation, and the inflatable buffer airbag 6 will disperse the energy through air pressure changes when it is squeezed.

[0032] Step 3: Secure the items

[0033] The internal divider 2 and the wavy groove 10 at the bottom of the box are specifically designed to secure items. If multiple loose items (such as screws, parts, or small tools) are being packed, the operator can insert the removable divider 2 into the slots 9 on the inner wall to divide the box into several independent compartments, preventing items from colliding with each other. If the bottom of the items is a round container such as a bottle or jar, they can be placed directly on the wavy groove 10 at the bottom—the crests and troughs of the groove will act like latches, holding the bottle bottom in place, so even if the box shakes, the bottle will not easily roll or tip over.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cushioned-in built packaging carton structure comprising a carton body (1), characterized in that The box body (1) is made of corrugated cardboard. The top, side and bottom surfaces of the box body (1) are integrally formed by folding lines. The top, side and bottom surfaces of the box body (1) are provided with pre-pressed fold lines (4). Arc-shaped transition areas (5) are provided on both sides of the fold lines. The top and bottom of the box body (1) are provided with foldable covers (3). The inner walls of the box body (1) are provided with supporting and reinforcing structures.

2. A cushioned-in-place carton structure according to claim 1 wherein: The supporting reinforcement structure is located at the four corners and the middle of the box body (1) in the L-shaped cardboard support (8). The L-shaped cardboard support (8) has a buffer panel (7) on one side and an inflatable buffer airbag (6) on one side of the buffer panel (7).

3. A cushioned-in-place carton structure according to claim 1 wherein: The bottom of the inner wall of the box (1) is provided with a wavy groove (10), the distance between the peak and the trough of the wavy groove (10) is 1-2cm, and the depth is 0.3-0.8cm.

4. A cushioned-in-place carton structure according to claim 1 wherein: The box (1) has a detachable partition plate (2) at its center, and a slot (9) is provided at the connection between the detachable partition plate (2) and the inner wall of the box (1).

5. The packaging carton structure with built-in cushioning according to claim 2, characterized in that: The inflatable cushioning airbag (6) has an elliptical airbag structure and an anti-slip texture on its surface. The height of the inflatable cushioning airbag (6) is 0.5-1.5cm.

6. The packaging carton structure with built-in cushioning according to claim 1, characterized in that: The corrugated cardboard is a single-layer B-type corrugated cardboard with a basis weight of 120-150g / m², a flute height of 2.5-3.5mm, and a flute pitch of 4-6mm.

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