High-strength corrugated carton for packaging vulnerable articles
By using composite cardboard structure and embedded connections, the corners and overall support of corrugated cardboard boxes are enhanced, solving the problem of easy damage to corrugated cardboard boxes during transportation and achieving effective protection of goods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-21
AI Technical Summary
Existing corrugated cardboard boxes are easily damaged by external impacts during transportation and handling, which can lead to damage and deformation of the box body and consequently damage to the contents inside.
It adopts a high-strength corrugated cardboard box structure for packaging fragile items, which is a composite structure composed of face paper, paper core, inner paper, padding cardboard, L-shaped cardboard, reinforcing cardboard, transverse cardboard and longitudinal cardboard, etc. The corners and overall support are enhanced by the insertion and connection of slots and foam pads.
It effectively enhances the corner support and overall structural strength of corrugated cardboard boxes, preventing damage and deformation of the boxes and protecting the items inside.
Smart Images

Figure CN224146503U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated cardboard box technology, and in particular to a high-strength corrugated cardboard box for packaging fragile items. Background Technology
[0002] Corrugated cardboard is die-cut, creasing, and stapling or gluing to make corrugated boxes. Corrugated boxes are a widely used packaging product, and their usage has always been the highest among all packaging products. For more than half a century, corrugated boxes have gradually replaced wooden boxes and other transport packaging containers due to their superior performance and good processing properties, and have dominated the transport packaging industry.
[0003] However, in the existing technology, some existing corrugated cardboard boxes are easily damaged or deformed by external impacts during the transportation and handling of goods, which in turn damages the items inside the box. Therefore, a solution is needed. Utility Model Content
[0004] The purpose of this utility model is to solve the problem that in the prior art, some existing corrugated cardboard boxes are easily damaged or deformed by external impacts during the transportation and handling of goods, which in turn damages the contents of the box.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-strength corrugated cardboard box for packaging fragile items, comprising: a face paper and two sets of L-shaped cardboard; a paper core, disposed on the inner wall of the face paper; and further comprising:
[0006] The inner liner is disposed on the surface of the paper core away from the outer liner, and a padding cardboard is placed inside the inner liner;
[0007] Multiple L-shaped slots are formed at the four corners of the surface of the padding paper, and the multiple L-shaped slots are movably fitted onto the surface of one set of L-shaped paperboards;
[0008] Multiple reinforcing cardboard pieces are disposed at the four corners of the surface of the padding cardboard.
[0009] Preferably, a plurality of the reinforcing cardboards are disposed on the inner wall of one set of L-shaped cardboards, and a groove is formed on the surface of the two sets of L-shaped cardboards at symmetrical locations.
[0010] The technical effect of adopting the above-mentioned further solution is that the support force of the corners is strengthened by reinforcing the cardboard connecting pad and the L-shaped cardboard, and the slot opened on the surface of the L-shaped cardboard facilitates the assembly of parts.
[0011] Preferably, the plurality of slots are divided into groups of two on average, and a transverse cardboard is movably embedded inside the plurality of groups of slots.
[0012] The technical effect of adopting the above-mentioned further solution is that the positioning work is carried out by a pair of internal transverse cardboards through the slot, and the transverse cardboard is attached to the inner paper, thereby strengthening the overall transverse support.
[0013] Preferably, the plurality of transverse cardboard pieces are divided into two groups on average, and slots are provided on opposite sides of one side of the two groups of transverse cardboard pieces.
[0014] The technical advantage of adopting the above-mentioned further solution is that the slots opened on the surface of the transverse cardboard facilitate the assembly of parts.
[0015] Preferably, the interior of the multiple sets of slots two is movably embedded with longitudinal cardboard, and the other set of L-shaped cardboard is slidably embedded on the inner wall at the four corners of the inner paper.
[0016] The technical effect of adopting the above-mentioned further solution is that the longitudinal cardboard inside the slot two provides overall longitudinal support.
[0017] Preferably, the surface of another set of L-shaped cardboard is provided with a foam pad, which is slidably embedded in the inner wall of the inner paper.
[0018] The technical effect of adopting the above-mentioned further solution is that the foam pad on the surface is positioned by another set of L-shaped cardboard, and the foam pad is embedded inside the inner paper to provide protection for the top of the sealed item and strengthen the support.
[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0020] 1. In this utility model, the bottom of the carton is folded and sealed, the padding cardboard is placed inside the inner paper, and the two ends of the horizontal cardboard are embedded in the inside of slot one. At the same time, the two ends of the vertical cardboard are embedded in the inside of slot two. A set of L-shaped cardboard is installed along the L-shaped slot and connected to the surface of the padding cardboard with reinforcing cardboard to strengthen the support of the corners.
[0021] 2. In this utility model, a longitudinal cardboard is used to position another set of transverse cardboards, and the transverse cardboard is embedded in the inside of the slot to complete the support work for another set of L-shaped cardboards. In conjunction with the foam pad, it is embedded along the inner paper and connected to the L-shaped cardboard to strengthen the transverse and longitudinal support and provide protection for the packaged object. Attached Figure Description
[0022] Figure 1 This utility model provides a partially unfolded structural diagram of a high-strength corrugated cardboard box for packaging fragile items;
[0023] Figure 2 This utility model provides a cross-sectional structural diagram of a high-strength corrugated cardboard box for packaging fragile items;
[0024] Figure 3 This utility model proposes a high-strength corrugated cardboard box for packaging fragile items. Figure 2 Enlarged structural diagram at point A in the middle;
[0025] Figure 4 This utility model proposes a high-strength corrugated cardboard box for packaging fragile items. Figure 1 Enlarged structural diagram at point B.
[0026] Legend:
[0027] 1. Face paper; 101. Paper core; 1011. Inner paper; 102. Padding paper; 1021. L-shaped groove; 1022. L-shaped paperboard; 1023. Groove one; 1024. Reinforcing paperboard; 103. Transverse paperboard; 1031. Groove two; 1032. Vertical paperboard; 104. Foam pad. Detailed Implementation
[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0030] Example 1, as Figure 1-4 As shown, this utility model provides a high-strength corrugated cardboard box for packaging fragile items, including: a face paper 1 and two sets of L-shaped cardboard 1022; a paper core 101 disposed on the inner wall of the face paper 1; and also including: a liner paper 1011 disposed on the surface of the paper core 101 away from the face paper 1, with a padding cardboard 102 placed inside the liner paper 1011; multiple L-shaped slots 1021 opened at the four corners of the surface of the padding cardboard 102, the multiple L-shaped slots 1021 being movably fitted onto the surface of one set of L-shaped cardboard 1022; and multiple reinforcing cardboard 1024 disposed at the four corners of the surface of the padding cardboard 102.
[0031] In this embodiment, the bottom of the carton is folded and sealed, the padding cardboard 102 is placed inside the inner paper 1011, and the two ends of the transverse cardboard 103 are embedded in the slot 1023. At the same time, the two ends of the longitudinal cardboard 1032 are embedded in the slot 2 1031. One set of L-shaped cardboard 1022 is installed along the L-shaped slot 1021 and is connected to the surface of the padding cardboard 102 with the reinforcing cardboard 1024 to strengthen the support of the corners.
[0032] In Example 2, multiple reinforcing cardboard 1024 are disposed on the inner wall of one set of L-shaped cardboard 1022. The surfaces of the two sets of L-shaped cardboard 1022 are provided with slots 1023 at symmetrical locations. The slots 1023 are divided into two groups on average. Transverse cardboard 103 is movably embedded inside the slots 1023. The transverse cardboard 103 is divided into two groups on average. The surfaces of the two groups of transverse cardboard 103 are provided with slots 21031 on opposite sides. The longitudinal cardboard 1032 is movably embedded inside the slots 21031. Another set of L-shaped cardboard 1022 is slidably embedded on the inner wall at the four corners of the inner paper 1011. Foam pads 104 are disposed on the surface of the other set of L-shaped cardboard 1022. The foam pads 104 are slidably embedded on the inner wall of the inner paper 1011.
[0033] In this embodiment, the longitudinal cardboard 1032 is used to position another set of transverse cardboard 103, and the transverse cardboard 103 is embedded in the slot 1023 to support another set of L-shaped cardboard 1022. The foam pad 104 is embedded along the inner paper 1011 and connected to the L-shaped cardboard 1022 to strengthen the transverse and longitudinal support and provide protection for the packaged object.
[0034] Working principle: The entire box structure is made of paper, and different materials can be used as needed. It consists of a face paper 1, a core paper 101, and an inner paper 1011. In use, the bottom of the box is folded and sealed. The padding cardboard 102 is placed inside the inner paper 1011, and the two ends of the transverse cardboard 103 are embedded in the slot one 1023. Simultaneously, the two ends of the longitudinal cardboard 1032 are embedded in the slot two 1031. A set of L-shaped cardboard 1022 is then inserted along the L-shaped slot. 1021 is embedded and installed, and is connected to the surface of the padding cardboard 102 with the reinforcing cardboard 1024 to strengthen the support of the corners. In addition, the longitudinal cardboard 1032 is used to position another set of transverse cardboard 103, and the transverse cardboard 103 is embedded in the slot 1023 to complete the support of another set of L-shaped cardboard 1022. The foam pad 104 is embedded along the inner paper 1011 and connected to the L-shaped cardboard 1022 to strengthen the transverse and longitudinal support and provide protection for the packaged object.
[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A high-strength corrugated paperboard box for packaging a fragile article, comprising: A face paper (1) and two sets of L-shaped cardboard (1022); a paper core (101) disposed on the inner wall of the face paper (1); characterized in that it further comprises: The inner paper (1011) is disposed on the surface of the paper core (101) away from the face paper (1), and a padding paper (102) is placed inside the inner paper (1011); Multiple L-shaped slots (1021) are provided at the four corners of the surface of the padding cardboard (102), and the multiple L-shaped slots (1021) are movably fitted onto the surface of one set of L-shaped cardboard (1022); Multiple reinforcing cardboard pieces (1024) are disposed at the four corners of the surface of the padding cardboard (102).
2. A high strength corrugated paperboard box for packaging of fragile articles according to claim 1, characterized in that: Multiple reinforcing cardboards (1024) are disposed on the inner wall of one set of L-shaped cardboards (1022), and a slot (1023) is provided on the surface of the two sets of L-shaped cardboards (1022) at symmetrical locations.
3. A high strength corrugated paperboard box for packaging of fragile articles according to claim 2, characterized in that: The multiple slots (1023) are divided into two groups on average, and the interior of the multiple groups of slots (1023) is movably embedded with transverse cardboard (103).
4. A high strength corrugated paperboard box for packaging of fragile articles according to claim 3, characterized in that: The multiple transverse cardboard pieces (103) are divided into two groups, and slots (1031) are opened at opposite positions on one side surface of the two groups of transverse cardboard pieces (103).
5. A high strength corrugated paperboard box for packaging of fragile articles according to claim 4, characterized in that: The interior of the multiple sets of slots two (1031) is movably embedded with longitudinal cardboard (1032), and the other set of L-shaped cardboard (1022) is slidably embedded on the inner wall at the four corners of the inner paper (1011).
6. A high strength corrugated paperboard box for packaging fragile articles according to claim 5 wherein: Another set of L-shaped cardboard (1022) has a foam pad (104) on its surface, which is slidably embedded in the inner wall of the inner paper (1011).