Composite sponge
By introducing a wave-shaped activated carbon fiber layer and a nano-silver fiber layer into the sponge, the problems of bacterial growth and odor in the sponge are solved, achieving effective deodorization and antibacterial effects, and improving the comfort and safety of using the sponge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JIANFENG AUTOMOBILE INTERIOR CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-02
AI Technical Summary
Existing sponges are prone to bacterial growth during use, producing unpleasant odors and potentially becoming moldy, and lack effective antibacterial and deodorizing functions.
The design employs a wave-shaped activated carbon fiber layer and a nano-silver fiber layer, combined with a cushioning sponge and a supporting structure. The activated carbon fiber layer physically adsorbs odor gases, while the nano-silver fiber inhibits bacterial growth and enhances the antibacterial properties of the sponge.
It effectively removes odors, inhibits bacterial growth, improves the hygiene and comfort of the sponge, reduces the risk of material aging, and enhances cushioning and structural stability.
Smart Images

Figure CN224311387U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sponge technology, and in particular to composite sponges. Background Technology
[0002] Composite sponges are typically made by bonding sponges and other materials together using a special process. They are multi-purpose composite materials that can be used in fields such as the automotive industry. Compared to simple sponges, composite sponges offer multiple benefits.
[0003] Due to their porous design, current sponges can harbor bacteria inside the pores during use, which can lead to unpleasant odors and even mold growth over time. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:
[0005] The composite sponge includes, from top to bottom, a cushioning sponge, a sponge body, a first supporting sponge, multiple sets of parallel anti-compression components, and a second supporting sponge. The cushioning sponge has multiple sets of through holes, and the sponge body is provided with a wave-shaped activated carbon fiber layer. The sponge body is provided with nano-silver fibers on one side of the activated carbon fiber layer.
[0006] As an improvement to the above technical solution, the pressure-resistant component includes a cylindrical pressure-resistant sponge and a support tube coaxially disposed inside the pressure-resistant sponge, with multiple sets of rubber columns disposed between the circumferential surface of the support tube and the inner wall of the pressure-resistant sponge.
[0007] As an improvement to the above technical solution, the rubber column is provided with multiple sets of channels along its extension direction.
[0008] As an improvement to the above technical solution, the support tube is provided with an X-shaped support plate, the support tube is injected with flame-retardant gas, the side wall of the support tube is provided with multiple air outlet holes, and a thin film is provided in the air outlet holes.
[0009] As an improvement to the above technical solution, the bottom of the first supporting sponge and the top of the second supporting sponge are both provided with grooves that are compatible with the anti-compression component.
[0010] As an improvement to the above technical solution, a waterproof layer is provided on the top of the cushioning sponge.
[0011] The beneficial effects of this utility model are:
[0012] The outermost layer of the composite sponge uses a cushioning sponge to absorb and disperse impact force when compressed, converting it into elastic potential energy, thus improving comfort and safety. The perforated structure also facilitates airflow and enhances the cushioning effect. The wave-shaped activated carbon fiber layer inside the sponge increases the contact area with air through its unique shape, effectively capturing odor gas molecules through physical adsorption and purifying the air. The nano-silver fiber, with its silver ion antibacterial properties, inhibits bacterial growth and reproduction at the source, maintaining the long-term hygiene of the composite sponge and reducing the risk of material aging. Attached Figure Description
[0013] Figure 1 This is a front view of the overall structure of this utility model;
[0014] Figure 2 This is a structural schematic diagram of the pressure-resistant component of this utility model.
[0015] Reference numerals: 10. Waterproof layer; 11. Cushioning sponge; 111. Through hole; 12. Sponge body; 121. Nano-silver fiber; 122. Activated carbon fiber layer; 13. Supporting sponge one; 14. Compression-resistant component; 141. Compression-resistant sponge; 142. Rubber column; 143. Channel; 144. Support tube; 145. Vent hole; 146. Support plate; 15. Supporting sponge two. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0017] The composite sponge includes, from top to bottom, a cushioning sponge 11, a sponge body 12, a supporting sponge 13, multiple sets of parallel anti-compression components 14, and a supporting sponge 2 15. The cushioning sponge 11 has multiple sets of through holes 111. The sponge body 12 has a wave-shaped activated carbon fiber layer 122 inside it. The sponge body 12 has nano-silver fibers 121 inside it and on one side of the activated carbon fiber layer 122.
[0018] Specifically, the cushioning sponge 11, as the outermost layer of the composite sponge, absorbs and disperses the impact force through deformation when external pressure is applied, converting it into elastic potential energy within the sponge, thus playing a cushioning and shock-absorbing role and improving comfort and safety. The through-holes 111 improve the breathability of the composite sponge, and under pressure, air can flow rapidly, compress, and expand within the composite sponge through the through-holes 111, further aiding in the absorption and dispersion of impact force. The wave-shaped activated carbon fiber layer 122 within the sponge body 12 adsorbs odors, and the wave shape increases the interaction between the activated carbon fiber layer 122 and the air. The contact area allows odor molecules in the environment to be captured by the activated carbon fiber through physical adsorption, effectively removing odors. The nano-silver fibers 121 inside the sponge body 12 play a role with the antibacterial properties of silver ions, inhibiting bacterial growth and reproduction from the source, keeping the composite sponge hygienic during long-term use, and reducing the risk of material aging due to bacterial growth. The cushioning sponge 11, sponge body 12, support sponge one 13, multiple sets of anti-compression parts 14 and support sponge two 15 are wrapped together by a cotton sleeve. The sponge body 12 is made of two layers of sponge with an activated carbon fiber layer 122 in the middle bonded together.
[0019] In one embodiment, the pressure-resistant component 14 includes a cylindrical pressure-resistant sponge 141 and a support tube 144 coaxially disposed within the pressure-resistant sponge 141. Multiple sets of rubber columns 142 are disposed between the circumferential surface of the support tube 144 and the inner wall of the pressure-resistant sponge 141. The cylindrical pressure-resistant sponge 141 itself has a certain elasticity and buffering capacity. When the composite sponge is subjected to significant pressure, the pressure-resistant sponge 141 deforms, absorbing some of the pressure energy. The support tube 144 coaxially disposed within the pressure-resistant sponge 141 provides rigid support, effectively resisting further compression and preventing excessive deformation of the composite sponge. The column 142 serves a dual function of connection and buffering. On the one hand, it connects the support tube 144 and the pressure-resistant sponge 141 together, enabling them to work together. On the other hand, under pressure, the rubber column 142 undergoes elastic deformation, further absorbing and dispersing the pressure. When the pressure is low, the elastic deformation of the rubber column 142 can buffer the pressure and prevent rigid collisions between the support tube 144 and the pressure-resistant sponge 141. When the pressure is high, the rubber column 142 and the pressure-resistant sponge 141 share the pressure, while the support tube 144 provides stable support, ensuring that the composite sponge can maintain good shape and performance even under high pressure.
[0020] In one embodiment, the rubber column 142 is provided with multiple sets of channels 143 along its extension direction. Under pressure, the air in the channels 143 flows with the compression and expansion of the rubber column 142. When the rubber column 142 is squeezed, the air in the channels 143 is compressed, which allows the rubber column 142 to absorb more pressure energy and enhances the cushioning performance of the rubber column 142. When the pressure decreases and the rubber column 142 recovers its deformation, external air can also enter the channels 143, helping the rubber column 142 to recover its original shape more quickly. At the same time, it promotes air circulation inside the composite sponge. Combined with the through holes 111 of the cushioning sponge 11, the composite sponge is more comfortable to use and reduces stuffiness.
[0021] In one embodiment, an X-shaped support plate 146 is provided inside the support tube 144, and flame-retardant gas is injected into the support tube 144. Multiple vent holes 145 are opened on the side wall of the support tube 144, and a thin film is provided inside the vent holes 145. The support plate 146 enhances the structural strength and stability of the support tube 144. When the flame-retardant gas injected into the support tube 144 encounters a fire source or high-temperature environment, it can play a flame-retardant role. Under normal circumstances, the thin film can prevent the flame-retardant gas from leaking from the vent holes 145 and maintain the concentration and pressure of the flame-retardant gas in the support tube 144. When encountering high temperature, the thin film melts, allowing the flame-retardant gas to be released from the vent holes 145. It can effectively retard and extinguish fires at the first moment when the composite sponge is about to burn or has already burned.
[0022] In one embodiment, the bottom of the supporting sponge 13 and the top of the supporting sponge 15 are both provided with grooves that are adapted to the anti-compression member 14. The anti-compression member 14 can be embedded in the grooves. When the composite sponge is under pressure, the grooves provide a stable support boundary, effectively preventing the anti-compression member 14 from shifting or shaking. At the same time, the tight fit between the grooves and the anti-compression member 14 allows the pressure to be transmitted and dispersed more evenly among the supporting sponge 13, the anti-compression member 14 and the supporting sponge 15, further improving the overall compressive strength and structural stability of the composite sponge. The supporting sponge 13 and the supporting sponge 15 are made of high-density sponge.
[0023] In one embodiment, a waterproof layer 10 is provided on the top of the cushioning sponge 11. The waterproof layer 10 can effectively prevent water penetration and avoid water from entering the internal structure of the cushioning sponge 11 and the composite sponge.
[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.
Claims
1. A composite sponge, characterized in that, The device includes, from top to bottom, a buffer sponge (11), a sponge body (12), a first supporting sponge (13), multiple sets of parallel anti-compression components (14), and a second supporting sponge (15). The buffer sponge (11) has multiple sets of through holes (111). The sponge body (12) has a wave-shaped activated carbon fiber layer (122) inside. The sponge body (12) has a nano-silver fiber (121) inside and on one side of the activated carbon fiber layer (122).
2. The composite sponge according to claim 1, characterized in that: The pressure-resistant component (14) includes a cylindrical pressure-resistant sponge (141) and a support tube (144) coaxially disposed inside the pressure-resistant sponge (141). Multiple sets of rubber columns (142) are disposed between the circumferential surface of the support tube (144) and the inner wall of the pressure-resistant sponge (141).
3. The composite sponge according to claim 2, characterized in that: The rubber column (142) is provided with multiple sets of channels (143) along its extension direction.
4. The composite sponge according to claim 3, characterized in that: The support tube (144) is provided with an X-shaped support plate (146), the support tube (144) is injected with flame-retardant gas, the side wall of the support tube (144) is provided with multiple air outlet holes (145), and the air outlet holes (145) are provided with a thin film.
5. The composite sponge according to claim 1, characterized in that: The bottom of the first support sponge (13) and the top of the second support sponge (15) are both provided with grooves that are compatible with the anti-compression member (14).
6. The composite sponge according to claim 1, characterized in that: The top of the cushioning sponge (11) is provided with a waterproof layer (10).