Breathable hydrophilic cotton based on bio-based polyurethane
By using bio-based polyurethane material and multi-layer structure design in the sponge, the problems of bacterial growth and moisture retention in the sponge are solved, and the drying, antibacterial and wear-resistant effects of the sponge are achieved, extending the service life.
Patent Information
- Application Number
- CN202421255192.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing sponge materials are prone to unpleasant odors and moldiness due to bacteria remaining in the pores, which affects their service life.
A breathable hydrophilic sponge based on bio-based polyurethane is adopted, and the design includes a sponge base layer, an elastic mesh layer, an antibacterial layer, a hydrophobic layer and a waterproof layer. Through the coordinated arrangement of these layers, the drying and antibacterial effects of the sponge are achieved.
It effectively avoids moisture retention and bacterial growth inside the sponge, prevents moldy and unpleasant odors, extends the service life of the sponge, and improves its wear resistance and elastic properties.
Smart Images
Figure CN222473596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sponges, in particular to a breathable hydrophilic sponge based on bio-based polyurethane. Background Art
[0002] Sponge is a porous material with good water absorption, and some sponges have good water permeability. Sponges also have their own unique soft characteristics. Most of the sponges commonly used by people are made of foamed polymers. According to different foaming methods, many special sponges with characteristics are formed, including memory sponges, breathable / water sponges, etc. Different sponges have their own unique ways and places of use.
[0003] Most of the sponges in the prior art are porous in design. During the use of the sponge, bacteria will remain inside the pores, which will produce an unpleasant odor over time and even cause bacterial mold. The mold will not only affect the normal use of the sponge, but also affect the service life of the sponge. Therefore, a breathable hydrophilic sponge based on bio-based polyurethane is needed to solve the above problems. Utility Model Content
[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.
[0005] To this end, one purpose of the utility model is to provide a breathable hydrophilic sponge based on bio-based polyurethane to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.
[0006] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the utility model provides a breathable hydrophilic sponge based on bio-based polyurethane, comprising a sponge base layer, an elastic mesh layer is arranged on the bottom side of the sponge base layer, a wear-resistant layer is arranged on the bottom side of the elastic mesh layer, a plurality of air permeable holes distributed laterally and vertically are opened inside the sponge base layer, an antibacterial layer is arranged on the top side of the sponge base layer, a hydrophobic layer is arranged on the top side of the antibacterial layer, a plurality of hydrophobic holes distributed laterally and vertically are opened inside the hydrophobic layer, a hydrophilic sponge layer is arranged on the top side of the hydrophobic layer, and a waterproof layer is arranged on the top side of the hydrophilic sponge layer.
[0007] Preferably, in any of the above schemes, the sponge base layer is made of polyurethane bio-based material.
[0008] Preferably, any of the above schemes is that the material of the elastic mesh layer is high-elastic EVA, which has the advantages of high resilience and high tensile strength, so that the elastic mesh layer has better elasticity.
[0009] Preferably, any of the above schemes is that the material of the antibacterial layer is antibacterial fiber, which has antibacterial and bactericidal functions and can kill bacteria entering the antibacterial layer, so that the antibacterial and bactericidal effect of the antibacterial layer is better.
[0010] Preferably, any of the above schemes is that the material of the hydrophobic layer is hydrophobic fiber, which can greatly prevent external moisture from entering the interior of the hydrophobic layer, and through cooperation with the hydrophobic holes, it can prevent moisture from staying in the hydrophobic layer.
[0011] Preferably, any of the above schemes is that the waterproof layer is a nano coating, which not only maintains the air permeability of the hydrophilic sponge layer but also increases the waterproof and oil-proof performance of the hydrophilic sponge layer.
[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:
[0013] 1. Through the coordinated arrangement of the hydrophilic sponge layer, the waterproof layer, the hydrophobic layer and the hydrophobic holes, it is possible to greatly prevent moisture from entering and staying inside the sponge structure, so that the inside of the sponge structure can be in a relatively dry environment, avoiding the mold and bacteria growth inside the sponge due to moisture, and through the coordinated arrangement with the antibacterial layer, it is possible to eliminate bacteria that enter the antibacterial layer, avoiding the breeding of bacteria inside the sponge structure, thereby avoiding the occurrence of unpleasant odors in the sponge structure, and ensuring the normal use and service life of the sponge structure.
[0014] 2. The elastic mesh layer makes the sponge structure more elastic, which greatly avoids the sponge structure from breaking due to stretching. The wear-resistant layer is also used to make the sponge structure more wear-resistant, which further ensures the service life of the sponge structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the hierarchical structure of the utility model.
[0016] In the figure: 1-sponge base layer, 2-elastic mesh layer, 3-wear-resistant layer, 4-breathable holes, 5-antibacterial layer, 6-hydrophobic layer, 7-hydrophobic holes, 8-hydrophilic sponge layer, 9-waterproof layer. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0018] like Figure 1As shown, a breathable hydrophilic sponge based on bio-based polyurethane comprises a sponge base layer 1, an elastic mesh layer 2 is arranged on the bottom side of the sponge base layer 1, a wear-resistant layer 3 is arranged on the bottom side of the elastic mesh layer 2, a plurality of air-permeable holes 4 distributed laterally and vertically are opened inside the sponge base layer 1, an antibacterial layer 5 is arranged on the top side of the sponge base layer 1, a hydrophobic layer 6 is arranged on the top side of the antibacterial layer 5, a plurality of hydrophobic holes 7 distributed laterally and vertically are opened inside the hydrophobic layer 6, a hydrophilic sponge layer 8 is arranged on the top side of the hydrophobic layer 6, a waterproof layer 9 is arranged on the top side of the hydrophilic sponge layer 8, the waterproof layer 9, the wear-resistant layer 1 and the antibacterial layer 5 can be arranged in a mesh structure, and the hydrophilic sponge layer 8 has good supporting effect, high breathability, and good safety. The environmentally friendly material has a soft hand feel and has good supporting effects, is highly breathable, has good moisture absorption and moisture resistance, and does not harden at low temperatures. The waterproof layer 9 can greatly prevent external moisture from entering the hydrophilic sponge layer 8, and the hydrophobic layer 6, hydrophobic holes 7 and breathable holes 4 can dissipate moisture inside the sponge to prevent moisture from remaining inside the sponge, so that the inside of the sponge can maintain a relatively dry environment, and the antibacterial layer 5 can eliminate bacteria inside the sponge structure to prevent bacteria from remaining inside the sponge structure, thereby preventing the sponge from getting moldy due to bacterial growth, and thereby preventing the sponge structure from having an unpleasant odor.
[0019] As an optional technical solution of the present invention, the material of the sponge base layer 1 is a polyurethane bio-based material. The polyurethane bio-based material is a polyurethane material prepared using biomass resources as raw materials. It is a new type of biodegradable material. It is prepared by chemically reacting various natural materials such as fibers and starch extracted from biomass resources (such as corn, wheat, apples, etc.) to produce a polyurethane bio-based material with excellent physical and chemical properties, so that the sponge base layer 1 can be easily degraded.
[0020] As an optional technical solution of the present invention, the material of the elastic mesh layer 2 is high-elastic EVA. High-elastic EVA has the advantages of high resilience and high tensile strength, which makes the elasticity of the elastic mesh layer 2 better, and thus makes the elasticity of the sponge structure better, avoiding the sponge structure from breaking due to external tension.
[0021] As an optional technical solution of the present invention, the material of the antibacterial layer 5 is antibacterial fiber, which has antibacterial and bactericidal functions and can eliminate bacteria that enter the antibacterial layer 5, so that the antibacterial and bactericidal effect of the antibacterial layer 5 is relatively good, which greatly avoids the situation where bacteria remain inside the sponge structure.
[0022] As an optional technical solution of the present invention, the material of the hydrophobic layer 6 is hydrophobic fiber. The hydrophobic fiber can greatly prevent external moisture from entering the interior of the hydrophobic layer 6, and through cooperation with the hydrophobic holes 7, it can prevent moisture from staying inside the hydrophobic layer 6.
[0023] As an optional technical solution of the present invention, the waterproof layer 9 is a nano-coating, which not only maintains the air permeability of the hydrophilic sponge layer 8, but also increases the waterproof and oil-proof performance of the hydrophilic sponge layer 8, thereby greatly avoiding the entry of moisture into the sponge structure.
[0024] In summary, the breathable hydrophilic sponge based on bio-based polyurethane can greatly prevent moisture from entering and staying inside the sponge structure through the coordinated arrangement of the hydrophilic sponge layer 8, the waterproof layer 9, the hydrophobic layer 6 and the hydrophobic holes 7, so that the interior of the sponge structure can be in a relatively dry environment, avoiding the mold and bacteria growth inside the sponge due to moisture, and through the coordinated arrangement with the antibacterial layer 5, it can eliminate bacteria that enter the antibacterial layer 5, avoiding the breeding of bacteria inside the sponge structure, and further avoiding the occurrence of unpleasant odors in the sponge structure, ensuring the normal use and service life of the sponge structure, and the elastic mesh layer 2 makes the sponge structure more elastic, greatly avoiding the breakage of the sponge structure due to stretching, and through the coordinated arrangement of the wear-resistant layer 3, the wear resistance of the sponge structure is relatively good, thereby further ensuring the service life of the sponge structure.
Claims
1. A breathable hydrophilic sponge based on bio-based polyurethane, characterized by: The invention comprises a sponge base layer (1), an elastic mesh layer (2) is arranged on the bottom side of the sponge base layer (1), a wear-resistant layer (3) is arranged on the bottom side of the elastic mesh layer (2), a plurality of air-permeable holes (4) distributed transversely and vertically are provided inside the sponge base layer (1), an antibacterial layer (5) is arranged on the top side of the sponge base layer (1), a hydrophobic layer (6) is arranged on the top side of the antibacterial layer (5), a plurality of hydrophobic holes (7) distributed transversely and vertically are provided inside the hydrophobic layer (6), a hydrophilic sponge layer (8) is arranged on the top side of the hydrophobic layer (6), and a waterproof layer (9) is arranged on the top side of the hydrophilic sponge layer (8).
2. The breathable hydrophilic sponge based on bio-based polyurethane according to claim 1, characterized in that: The sponge base layer (1) is made of polyurethane bio-based material.
3. The breathable hydrophilic sponge based on bio-based polyurethane according to claim 2, characterized in that: The material of the elastic mesh layer (2) is highly elastic EVA.
4. The breathable hydrophilic sponge based on bio-based polyurethane according to claim 3, characterized in that: The material of the antibacterial layer (5) is antibacterial fiber.
5. The breathable hydrophilic sponge based on bio-based polyurethane according to claim 4, characterized in that: The material of the hydrophobic layer (6) is hydrophobic fiber.
6. The breathable hydrophilic sponge based on bio-based polyurethane according to claim 5, characterized in that: The waterproof layer (9) is a nano coating.