A shock-absorbing and cushioning cardboard pearl cotton
By setting arc-shaped through holes, cylindrical through holes, L-shaped protective cardboard, and buffer grooves on the EPE foam body, the problem of easy deformation of the edges and corners of EPE foam is solved, the edge strength and buffering capacity are enhanced, and efficient shock absorption protection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU TIANHAO PACKAGING MATERIALS CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-30
AI Technical Summary
Existing pearl cotton is prone to deformation at the edges and corners after grooving, resulting in reduced protective performance, especially under prolonged compression, it cannot provide reliable cushioning protection.
Arc-shaped through holes, cylindrical through holes, L-shaped protective cardboard, and buffer grooves are set on the pearl cotton body. The edge strength is enhanced by bonding the L-shaped protective cardboard, and the buffer groove provides reserved buffer space to achieve efficient buffer protection.
The edge strength of the pearl cotton has been enhanced, and additional cushioning space is provided through the buffer groove, which improves the shock absorption effect of the pearl cotton and ensures the safety of the internal products.
Smart Images

Figure CN224428576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pearl cotton technology, specifically to a shock-absorbing and cushioning cardboard pearl cotton. Background Technology
[0002] EPE foam, a new type of environmentally friendly packaging material, is composed of countless independent air bubbles created through the physical foaming of low-density polyethylene resin. It is lightweight, soft, and elastic, protecting items from impact damage. Its soft surface will not scratch product surfaces and it also possesses moisture-proof, heat-insulating, and corrosion-resistant properties. EPE foam is recyclable, environmentally friendly, and widely used in the packaging of electronic products, precision instruments, handicrafts, and other items, providing reliable protection for the safety of transported goods.
[0003] In existing technologies, while pearl cotton can effectively protect the items placed inside, the internal grooving process significantly thins the walls of the grooved areas. This makes the edges and corners highly susceptible to deformation under pressure. Especially under prolonged and continuous pressure, this deformation accumulates, gradually reducing the protective performance of the pearl cotton.
[0004] Therefore, a shock-absorbing and cushioning cardboard pearl cotton is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a shock-absorbing and cushioning cardboard pearl cotton to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing and cushioning cardboard pearl cotton, comprising a pearl cotton body, wherein an arc-shaped through hole is formed on the pearl cotton body, and a cylindrical through hole is formed on the upper end of the pearl cotton body, wherein the diameter of the cylindrical through hole is larger than the diameter of the arc-shaped through hole, and two L-shaped protective cardboard are glued to the bottom edge of the pearl cotton body, wherein both L-shaped protective cardboard are L-shaped and are symmetrically distributed on the edge of the pearl cotton body.
[0007] Preferably, two sets of buffer grooves are provided on the ground of the pearl cotton body. The two sets of buffer grooves are symmetrically distributed on the ground of the pearl cotton body and are perpendicular to the two L-shaped protective cardboards. The height of the buffer grooves is 45±1 mm.
[0008] Preferably, the upper plane of the pearl cotton body is larger than the lower plane of the pearl cotton body, the thickness of the pearl cotton body is between 80±2 mm, and the length and width of the pearl cotton body are both 175±2 mm.
[0009] Preferably, the diameter of the arc-shaped through hole is 90±2 mm and the height of the arc-shaped through hole is 60±1 mm.
[0010] Preferably, the diameter of the cylindrical through hole is 155±2 mm, and the height of the cylindrical through hole is between 20±1 mm.
[0011] Preferably, the thickness of the L-shaped protective cardboard is 3 mm.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention, through the design of a pearl cotton body, arc-shaped through holes, cylindrical through holes, L-shaped protective cardboard, and cushioning grooves, allows for the symmetrical bonding of L-shaped protective cardboard to the bottom side of the pearl cotton body when used for product packaging protection. This significantly enhances the strength of the bottom edge of the pearl cotton body, effectively preventing situations where insufficient bottom edge strength prevents the pearl cotton body from providing reliable cushioning protection for the internal product. Furthermore, by incorporating two sets of cushioning grooves on the pearl cotton body, the reserved cushioning space functions when compressed, enabling the pearl cotton body to achieve efficient cushioning and further ensuring the safety of the internal product. Simultaneously, the inherent softness and resilience of the pearl cotton body effectively achieves shock absorption. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 2 This is a bottom view of the structure of this utility model;
[0016] Figure 3 This is a side view of the structure of this utility model;
[0017] Figure 4 This is a perspective structural diagram of the present invention;
[0018] In the picture: 1. Pearl cotton body; 2. Arc-shaped through hole; 3. Cylindrical through hole; 4. L-shaped protective cardboard; 5. Buffer groove. Detailed Implementation
[0019] 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.
[0020] Example: Please refer to Figure 1-4This utility model provides a technical solution: a shock-absorbing and cushioning cardboard pearl cotton, comprising a pearl cotton body 1, the upper end plane of the pearl cotton body 1 being larger than the lower end plane of the pearl cotton body 1, the thickness of the pearl cotton body 1 being between 80±2 mm, the length and width of the pearl cotton body 1 being both 175±2 mm, an arc-shaped through hole 2 being formed on the pearl cotton body 1, the diameter of the arc-shaped through hole 2 being 90±2 mm, the height of the arc-shaped through hole 2 being 60±1 mm, and a cylindrical through hole 3 being formed on the upper end of the pearl cotton body 1, the diameter of the cylindrical through hole 3 being 155±2 mm, the height of the cylindrical through hole 3 being between 20±1 mm, and the diameter of the cylindrical through hole 3 being larger than the arc-shaped through hole 2 being 90±2 mm, the diameter of the cylindrical through hole 3 being larger than the arc-shaped through hole 2 being 60±1 mm. The diameter of the through hole 2 is such that two L-shaped protective cardboard 4 are glued to the bottom edge of the pearl cotton body 1. Both L-shaped protective cardboard 4 are L-shaped and 3 mm thick. The two L-shaped protective cardboard 4 are symmetrically distributed on the edge of the pearl cotton body 1. When using the pearl cotton body 1 for product packaging protection, the L-shaped protective cardboard 4 can be symmetrically glued to its bottom side. This operation can significantly enhance the strength of the bottom edge of the pearl cotton body 1 and effectively avoid the situation where the pearl cotton body 1 cannot provide reliable cushioning protection for the internal products due to insufficient bottom edge strength. At the same time, the softness and toughness of the pearl cotton body 1 itself can effectively achieve shock absorption.
[0021] Furthermore, two sets of buffer grooves 5 are provided on the ground of the pearl cotton body 1. The two sets of buffer grooves 5 are symmetrically distributed on the ground of the pearl cotton body 1 and are perpendicular to the two L-shaped protective cardboard 4. The height of the buffer grooves 5 is 45±1 mm. By setting two sets of buffer grooves 5 on the pearl cotton body 1, when it is squeezed, the reserved buffer space can play a role, so that the pearl cotton body 1 can achieve efficient buffering by means of this space, further ensuring the safety of the internal products.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A shock-absorbing and cushioning cardboard pearl cotton, characterized in that: The device includes a pearl cotton body (1), on which an arc-shaped through hole (2) is provided. A cylindrical through hole (3) is provided at the upper end of the pearl cotton body (1). The diameter of the cylindrical through hole (3) is larger than the diameter of the arc-shaped through hole (2). Two L-shaped protective cardboard pieces (4) are glued to the bottom edge of the pearl cotton body (1). Both L-shaped protective cardboard pieces (4) are L-shaped and are symmetrically distributed on the edge of the pearl cotton body (1).
2. The shock-absorbing and cushioning cardboard pearl cotton according to claim 1, characterized in that: Two sets of buffer grooves (5) are provided on the ground of the pearl cotton body (1). The two sets of buffer grooves (5) are symmetrically distributed on the ground of the pearl cotton body (1) and are perpendicular to the two L-shaped protective cardboard (4). The height of the buffer grooves (5) is 45±1 mm.
3. The shock-absorbing and cushioning cardboard pearl cotton according to claim 1, characterized in that: The upper plane of the pearl cotton body (1) is larger than the lower plane of the pearl cotton body (1), the thickness of the pearl cotton body (1) is between 80±2 mm, and the length and width of the pearl cotton body (1) are both 175±2 mm.
4. The shock-absorbing and cushioning cardboard pearl cotton according to claim 1, characterized in that: The diameter of the arc-shaped through hole (2) is 90±2 mm, and the height of the arc-shaped through hole (2) is 60±1 mm.
5. The shock-absorbing and cushioning cardboard pearl cotton according to claim 1, characterized in that: The diameter of the cylindrical through hole (3) is 155±2 mm, and the height of the cylindrical through hole (3) is between 20±1 mm.
6. The shock-absorbing and cushioning cardboard pearl cotton according to claim 1, characterized in that: The thickness of the L-shaped protective cardboard (4) is 3 mm.