A carton inner

Abstract

The application relates to the technical field of packaging boxes, in particular to a paperboard packaging box inner support which comprises a containing groove body folding structure and an outer support folding structure, the containing groove body folding structure is formed by cutting and indentation forming of single paperboard, and the paperboard is folded to form a containing groove for supporting products; the outer support folding structure is formed by cutting and indentation forming of single paperboard, and the paperboard is folded to form an outer frame for supporting the containing groove body folding structure and being attached to the inner wall of the packaging box body; and the containing groove body folding structure and the outer support folding structure are fixed by gluing. The application has excellent protection performance, is environment-friendly and recyclable, and cost controllable.

Description

Technical Field

[0001] This application relates to the technical field of packaging boxes, and more specifically, to a cardboard packaging box inner tray. Background Technology

[0002] A packaging box insert is a key internal component placed inside the packaging box to position, support, and protect the product. It typically features a recessed slot that conforms to the product's shape, securely holding the product within and effectively preventing wear or damage caused by shaking or collisions during transportation and storage.

[0003] In related technologies, plastic sheets are typically vacuum-formed into inner trays for packaging round glass bottles. These inner trays have rectangular receiving slots to fit the round glass bottle. However, vacuum-formed inner trays are made from non-degradable petroleum-based plastics, which are difficult to degrade naturally after use and disposal. Improper handling can cause long-term "white pollution" to the environment. With increasing global environmental awareness and tightening "plastic restriction" policies in various countries, the environmental pressure of using plastic inner trays is growing. At the same time, vacuum forming requires the production of specialized metal molds, which have long development cycles and high initial investment costs, making them particularly unsuitable for small-batch, diversified customized production needs. Furthermore, plastic materials often give people a cheap and low-end feeling, making it difficult to meet the requirements of high-end brands for packaging quality, environmental protection concepts, and brand social responsibility.

[0004] Therefore, there is an urgent need in the existing technology for a new type of inner support structure that combines excellent protective performance, environmental friendliness and recyclability, cost control and high-end appearance. Utility Model Content

[0005] To address the issues of difficult degradation, high cost, and lack of sophistication associated with plastic sheet thermoforming for inner packaging boxes in related technologies, this application provides a cardboard inner packaging box tray.

[0006] A cardboard-type packaging box inner tray includes a receiving groove folding structure and an outer support folding structure. The receiving groove folding structure is formed by cutting and creasing a single piece of cardboard, and the cardboard, after being folded, forms a receiving groove for supporting the product. The outer support folding structure is formed by cutting and creasing a single piece of cardboard, and the cardboard, after being folded, forms an outer frame for supporting the receiving groove folding structure and adhering to the inner wall of the packaging box body. The receiving groove folding structure and the outer support folding structure are glued together.

[0007] Preferably, the folding structure of the receiving groove includes a base plate, two first side plates formed by bending upward from opposite sides of the base plate, and two second side plates formed by bending upward from other opposite sides of the base plate. The base plate, the first side plates, and the second side plates together enclose the receiving groove.

[0008] Preferably, the top ends of the two first side plates extend horizontally outward to form a first connecting plate, and the top ends of the two second side plates extend horizontally outward to form a second connecting plate. The upper surfaces of the first connecting plate and the second connecting plate are coated with adhesive and are glued to the outer support folding structure by adhesive.

[0009] Preferably, the external support folding structure includes a supporting top plate, two first bonding plates formed by bending downwards from opposite sides of the supporting top plate, and two second bonding plates formed by bending downwards from opposite sides of the supporting top plate. The first connecting plates and the second connecting plates are glued to the lower surface of the supporting top plate, and the supporting top plate is provided with a slot at the position corresponding to the receiving groove that matches the opening size of the receiving groove.

[0010] Preferably, there are multiple folding structures for receiving grooves, and these multiple folding structures are evenly arranged along the length direction of the supporting top plate. The number of slots opened in the supporting top plate is multiple to match the number of folding structures for receiving grooves.

[0011] Preferably, the first side plate and the bottom plate, the second side plate and the bottom plate, the first side plate and the first connecting plate, and the second side plate and the second connecting plate are all bent and folded by indentation lines.

[0012] Preferably, the first bonding plate and the supporting top plate, as well as the second bonding plate and the supporting top plate, are bent and folded through indentation lines.

[0013] The beneficial technical effects of this application are as follows: Replacing traditional petroleum-based plastics with biodegradable and recyclable cardboard material solves the problem of plastic inserts being difficult to degrade naturally after disposal, easily causing "white pollution," actively responding to global environmental protection trends and "plastic restriction" policies, and significantly reducing environmental pressure; it eliminates the expensive metal molds required for blister packaging, allowing for molding through cutting and creasing, greatly shortening the product development cycle and reducing initial investment and production costs. This process is particularly suitable for small-batch, diversified, and customized order needs, providing greater production flexibility and economy; the combination of the folded structure of the receiving slot and the folded structure of the outer support provides reliable support, with the receiving slot precisely supporting the product, while the outer frame fits tightly against the inner wall of the packaging box, effectively dispersing impact force and jointly ensuring the stability of the product during transportation and storage, preventing damage caused by shaking and collisions; the cardboard material has good printability and texture, and can present a high-end visual effect through surface treatment, meeting the pursuit of high-end brands for packaging aesthetics and quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first angle structure of the inner tray of a cardboard packaging box according to this embodiment.

[0015] Figure 2 This is a schematic diagram of the second angle of the inner tray of a cardboard packaging box according to this embodiment.

[0016] Figure 3 This is a schematic diagram of the folded structure of the accommodating groove in this embodiment.

[0017] Reference numerals: 1. Folding structure of receiving groove; 11. Base plate; 12. First side plate; 13. Second side plate; 14. Receiving groove; 15. First connecting plate; 16. Second connecting plate; 2. External support folding structure; 21. Supporting top plate; 22. Slot; 23. First bonding plate; 24. Second bonding plate; Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Reference Figure 1-3 A cardboard-type packaging box inner tray includes a receiving groove folding structure 1 and an outer support folding structure 2, both of which are integrally formed from a single sheet of cardboard through cutting and creasing processes, and then combined into a complete inner tray through folding and gluing. The receiving groove folding structure 1 is used to directly support the product, and includes a rectangular base plate 11. Two sets of opposite sides of the base plate 11 are connected to a first side plate 12 and a second side plate 13 respectively by creasing lines. When folded, these side plates stand up and together with the base plate 11 form a receiving groove 14 adapted to the shape of the product. To further enhance structural stability and connection strength, a first connecting plate 15 extends horizontally outward from the top of each first side plate 12, and a second connecting plate 16 extends from the top of each second side plate 13. These connecting plates are also bent to the side plates by creasing lines. The upper surface of all connecting plates is coated with glue for bonding and fixing to the outer support folding structure 2.

[0020] Reference Figure 1The external support folding structure 2 supports the receiving slot 14 and fits against the inner wall of the packaging box. It includes a rectangular support top plate 21, with a slot 22 corresponding to the opening of the receiving slot 14. The size of the slot 22 matches the receiving slot 14 to ensure that the product can be smoothly placed in and receive stable support. The four sides of the support top plate 21 are connected to two first bonding plates 23 and two second bonding plates 24 by indentation lines. When folded, these bonding plates bend downward to form a vertical support surface that fits against the inner wall of the packaging box. To further optimize the assembly experience and prevent scratching the inner wall during the boxing process, the two corners of the first bonding plates 23 and the second bonding plates 24 away from the support top plate 21 are rounded, so that the entire inner tray can be placed into the inner cavity of the packaging box more smoothly. In the application scenario of multiple receiving slots 14, multiple receiving slot folding structures 1 can be integrally cut and crimped on the same cardboard and evenly arranged along the length direction of the supporting top plate 21. Correspondingly, the supporting top plate 21 also has multiple slots 22 to accommodate each receiving slot 14 respectively.

[0021] Reference Figure 1-3 In actual assembly, firstly, the side plates and connecting plates of the folding structure 1 are folded along the crease lines to form the folding groove 14 that supports the product; then, the bonding plates of the outer support folding structure 2 are folded downwards to form an outer support frame; finally, the folding structure 1 is adhered to the lower surface of the support top plate 21 of the outer support folding structure 2 using glue on the connecting plates, so that the opening of the folding groove 14 is aligned with the slot 22 on the support top plate 21, thus forming a stable, environmentally friendly, and aesthetically pleasing paper inner tray. This structure effectively disperses external impacts through double cardboard support, preventing product shaking. It also uses recyclable materials and simple processing techniques, combining protective performance, environmental friendliness, and economy. This application ensures product protection while significantly improving environmental performance and production efficiency, making it particularly suitable for high-end packaging and flexible small-batch production needs.

[0022] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cardboard-type inner tray for packaging boxes, characterized in that: The product includes a folding structure for a receiving groove and an outer folding structure. The folding structure for the receiving groove is formed by cutting and creasing a single sheet of cardboard, and the cardboard, after being folded, forms a receiving groove for supporting the product. The outer folding structure is formed by cutting and creasing a single sheet of cardboard, and the cardboard, after being folded, forms an outer frame for supporting the folding structure for the receiving groove and fitting against the inner wall of the packaging box. The folding structure for the receiving groove and the outer folding structure are glued together.

2. The inner tray of a cardboard packaging box according to claim 1, characterized in that: The folding structure of the receiving groove includes a base plate, two first side plates formed by bending upward from opposite sides of the base plate, and two second side plates formed by bending upward from opposite sides of the base plate. The base plate, the first side plates, and the second side plates together enclose the receiving groove.

3. The inner tray of a cardboard packaging box according to claim 2, characterized in that: The top ends of the two first side plates extend horizontally outward to form a first connecting plate, and the top ends of the two second side plates extend horizontally outward to form a second connecting plate. The upper surfaces of the first connecting plate and the second connecting plate are coated with glue and are glued to the outer support folding structure.

4. The inner tray of a cardboard packaging box according to claim 3, characterized in that: The external support folding structure includes a supporting top plate, two first bonding plates formed by bending downwards from opposite sides of the supporting top plate, and two second bonding plates formed by bending downwards from opposite sides of the supporting top plate. The first connecting plates and the second connecting plates are glued to the lower surface of the supporting top plate. The supporting top plate is provided with a slot at the position corresponding to the receiving groove, which matches the opening size of the receiving groove.

5. The inner tray of a cardboard packaging box according to claim 4, characterized in that: The number of the folding structures of the receiving groove is multiple, and the multiple folding structures of the receiving groove are evenly arranged along the length direction of the supporting top plate. The number of slots opened in the supporting top plate is multiple to match the number of the folding structures of the receiving groove.

6. The inner tray of a cardboard packaging box according to claim 3, characterized in that: The first side plate and the bottom plate, the second side plate and the bottom plate, the first side plate and the first connecting plate, and the second side plate and the second connecting plate are all bent and folded by indentation lines.

7. The inner tray of a cardboard packaging box according to claim 4, characterized in that: The first bonding plate and the supporting top plate, as well as the second bonding plate and the supporting top plate, are bent and folded through indentation lines.

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