Composite structure for multi-field and multi-purpose tool capable of holding water, and preparation method therefor
By using a multi-layered absorbent composite structure tool, the problems of poor killing effect and environmental pollution caused by traditional tools have been solved, achieving efficient mosquito killing and improving ease of use and comfort.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HE CHANGMING
- Filing Date
- 2025-07-25
- Publication Date
- 2026-05-21
AI Technical Summary
Traditional mosquito-catching tools are ineffective at killing mosquitoes in high places and corners, and cannot effectively recover mosquito carcasses and blood, leading to environmental pollution. Towels and frisbees have a single-layer structure, making them inconvenient to use and environmentally unfriendly. Cleaning cloths are also inconvenient to use.
It adopts a two- or three-layer detachable or non-detachable composite structure of absorbent materials, including a support layer, a trapping layer and an intermediate layer, to manufacture multi-purpose tools, such as insect trapping tools, composite structure towels, composite structure flying carpets and composite structure cleaning blankets, and utilizes absorbent materials to improve the trapping effect and ease of use.
It effectively kills mosquitoes in high places and corners, reduces environmental pollution, improves user comfort and convenience, and enhances environmental protection and safety.
Smart Images
Figure CN2025110482_21052026_PF_FP_ABST
Abstract
Description
A composite structure for multi-field, multi-purpose water-containing tools and its preparation method
[0001] Cross-reference to related applications
[0002] This disclosure claims priority to the following patent applications filed with the Chinese Patent Office on November 14, 2024, No. 2024116673575 entitled "Mosquito Killing Flying Carpet"; filed with the Chinese Patent Office on March 11, 2025, No. 2025103106171 entitled "An Insect-Catching Tool"; and filed with the Chinese Patent Office on June 2, 2025, No. 2025107791609 entitled "A Composite Structure for Manufacturing a Multi-Field, Multi-Purpose Water-Containing Tool and a Method Thereof," the entire contents of which are incorporated herein by reference. Technical Field
[0003] This disclosure relates to the field of daily necessities technology, specifically to a composite structure for a multi-purpose, multi-field water-containing tool and its preparation method. Background Technology
[0004] Currently, in people's daily lives, traditional insect-killing tools such as electric mosquito swatters, mosquito swatters, and fly swatters can only kill mosquitoes and flies within the range of the human body. However, when a person approaches, the insects generally sense changes in temperature, wind speed, and light, and will quickly flee, increasing the difficulty of killing them. Furthermore, traditional tools are difficult to reach insects located at higher positions, such as those on the ceiling, and it is difficult to kill them at suitable angles. At the same time, if insects are in corners or other non-flat areas, electric mosquito swatters are significantly less effective, failing to effectively kill insects in these corners.
[0005] Furthermore, tools such as electric mosquito swatters cannot directly recover the corpses and blood of mosquitoes, flies, and other insects, and can cause serious environmental pollution. The dangers, pollution, and waste associated with mosquito coils and electronic mosquito-killing products should not be ignored either.
[0006] Traditional towels are single-layered and often need to be folded for use. Even if they can be used in a single layer, they are often not thick or comfortable to use.
[0007] The popular school exercise tool, the frisbee, is made of rigid, single-layered plastic, which has certain shortcomings in terms of environmental friendliness, safety, and comfort.
[0008] Common cleaning cloths are often single-layered and need to be folded for use, which greatly reduces their convenience and affects their efficiency.
[0009] For the purpose of using single-layer tools in other fields or applications, the present disclosure can also be used to manufacture corresponding products or tools with innovative advantages by adopting a water-containing composite structure.
[0010] In view of this, this disclosure is hereby made. Summary of the Invention
[0011] The purpose of this disclosure is to address the deficiencies and shortcomings of existing products in the aforementioned fields by providing a composite structure for a multi-field, multi-purpose water-containing tool and its preparation method.
[0012] In a first aspect, this disclosure provides a composite structure for a multi-field, multi-purpose water-containing tool, which is made of two or more layers of absorbent material stacked and fixed together, and the stacking and fixing method includes detachable stacking and fixing or non-detachable stacking and fixing.
[0013] Optionally, the general composite structure disclosed herein is a two- or three-layer structure, including a functional layer, a support layer, and an intermediate layer. Different methods of composing the absorbent material are selected based on the application and intended use.
[0014] First, the composite structure provided in this disclosure is an insect-catching tool that can kill small insects at close or long distances, especially mosquitoes in high places and corners. It can also collect the bodies and blood of mosquitoes, effectively reducing environmental pollution.
[0015] An insect-catching tool includes at least a support layer and a trapping layer, both of which are deformable, absorbent materials.
[0016] The trapping layer and the supporting layer are aligned, overlapped, and fixed in the same direction; the water is absorbed and drained until it no longer drips, maintaining a certain degree of rigidity. When trapping insects, the trapping layer covers the plane where the insect is located.
[0017] Optionally, the size of the trapping layer is smaller than the size of the supporting layer.
[0018] Optionally, the insect-catching tool also includes a water-absorbing intermediate layer, which is disposed between the support layer and the insect-catching layer and is centered and overlapped in the same direction for fixation.
[0019] Optionally, the middle layer is a sponge layer.
[0020] Optionally, the intermediate layer has a side length of 18 cm and a thickness of 1.2 cm.
[0021] Optionally, the support layer is made of cotton yarn, sponge, or cotton-like material, and the support layer can be used for cleaning.
[0022] Optionally, the support layer has dimensions of 30 cm × 30 cm.
[0023] Optionally, the trapping layer has a side length of 21 cm and a thickness of 0.5–1.0 cm.
[0024] Optionally, the trapping layer is a cotton or cotton-like towel layer.
[0025] Optionally, the materials used to prepare the trapping layer and the supporting layer are water-absorbing materials.
[0026] Optionally, the absorbent material includes cotton yarn, and at least one of the trapping layer and the supporting layer has a thickness of 1 to 2 centimeters.
[0027] Optionally, the insect-catching tool is square with a side length of 20 centimeters and has rigidity and deformability.
[0028] Alternatively, the aforementioned layers can be replaced with circles of corresponding diameters.
[0029] Secondly, the composite structure provided in this disclosure can also be used to manufacture composite structure towels, which has the advantage of significantly improving the convenience and comfort of use.
[0030] The composite structure towel includes at least a support layer and a functional layer, wherein the support layer may be a single-layer cotton or cotton-like towel; and the functional layer should be a single-layer pure cotton towel.
[0031] The functional layer and the supporting layer are aligned at their centers, stacked in the same direction, and fixed together.
[0032] When washing your face or taking a shower, only the functional layer should come into contact with the area where you are washing your face or wiping your body.
[0033] Optionally, the size of the functional layer is smaller than the size of the supporting layer.
[0034] Optionally, the composite structure towel also includes an absorbent intermediate layer, which is disposed between the support layer and the functional layer and is centered and overlapped in the same direction for fixation.
[0035] Preferably, the middle layer is a high-quality cosmetic sponge material layer.
[0036] Optionally, the intermediate layer is 36 cm long, 22 cm wide, and 1 cm thick.
[0037] Optionally, the support layer is made of cotton yarn or cotton-like material, and the support layer can be used for human body cleaning.
[0038] Optionally, the support layer has dimensions of 42 cm in length, 26 cm in width, and 0.2–0.3 cm in thickness.
[0039] Optionally, the functional layer is 39 cm long, 25 cm wide, and 0.2–0.3 cm thick.
[0040] Optionally, the functional layer is a high-quality cotton towel layer.
[0041] The advantage of this invention in manufacturing towels is that it greatly improves both comfort and convenience.
[0042] Furthermore, the composite structure provided in this disclosure can also be a composite structure flying carpet. The advantage of this composite structure flying carpet over plastic flying discs is that it can be used after being soaked in water and squeezed dry until it no longer drips, significantly improving safety and comfort. Using room temperature water in summer and medium-warm water in winter provides an even better experience.
[0043] This composite structure flying carpet includes at least: a wing layer, an intermediate stabilizing layer, and a surface layer. The wing layer and surface layer can be made of pure cotton or cotton-like materials. The intermediate stabilizing layer should be made of harmless sponge material.
[0044] The wing layer, intermediate stabilizing layer, and surface layer are aligned, stacked in the same direction, and fixed.
[0045] Preferably, the intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1 to 1.5 cm.
[0046] Preferably, the wing layer is a square with a side length of 30 cm and a thickness of 0.2 to 0.3 cm.
[0047] Preferably, the surface layer is a square with a side length of 21 to 22 cm and a thickness of 0.2 to 0.3 cm.
[0048] Optionally, the intermediate stabilizing layer is a high-quality sponge layer.
[0049] Optionally, the aforementioned wing layer, intermediate stabilizing layer, and surface layer can all be changed to circles of the corresponding diameter.
[0050] The advantages of this invention for manufacturing flying carpets to replace frisbees are that it greatly improves comfort, safety, and user experience.
[0051] Finally, the composite structure provided in this disclosure can also be used as a composite structure cleaning mat, which replaces the commonly used single-layer cleaning cloth. Its advantage lies in the fact that the composite structure cleaning mat can be used after soaking and wringing out water until it no longer drips, significantly improving ease of use and comfort. Using room temperature water in summer and medium-warm water in winter provides an even better experience.
[0052] This composite cleaning blanket includes at least: a gripping layer, a middle stabilizing layer, and a cleaning layer. The gripping and cleaning layers can be made of pure cotton or a highly absorbent cotton-like material. The middle stabilizing layer should be a harmless sponge material.
[0053] The holding layer, intermediate stabilizing layer, and cleaning layer are aligned, stacked in the same direction, and fixed.
[0054] Preferably, the intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1 to 1.5 cm.
[0055] Preferably, the gripping layer is a square with a side length of 30 cm and a thickness of 0.1 to 0.2 cm.
[0056] Preferably, the cleaning layer is a square with a side length of 21 to 22 cm and a thickness of 0.2 to 0.3 cm.
[0057] Optionally, the aforementioned holding layer, intermediate stabilizing layer, and cleaning layer can all be replaced with circles of the corresponding diameter.
[0058] The advantages of this invention for manufacturing composite structure cleaning blankets instead of single-layer cleaning cloths are that they greatly improve comfort, convenience, and user experience. Attached Figure Description
[0059] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0060] Figure 1 is a schematic diagram of a general water-absorbing composite structure disclosed in this publication.
[0061] Figure 2 is a schematic diagram of a general water-absorbing composite structure disclosed in this publication. Detailed Implementation
[0062] The embodiments of this disclosure will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of this disclosure. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.
[0063] The endpoints and any values of the ranges disclosed in this disclosure are not limited to the precise ranges or values, and such ranges or values should be understood to include values close to such ranges or values. For numerical ranges, the endpoint values of the various ranges, the endpoint values of the various ranges and individual point values, and individual point values can be combined with each other to obtain one or more new numerical ranges, which should be regarded as specifically disclosed herein.
[0064] This invention can first be used to manufacture a tool (insect-killing flying carpet) for killing and capturing small insects such as mosquitoes, flies, cockroaches, and centipedes. It is particularly useful when mosquitoes and flies are in places inconvenient for humans to directly touch, and when traditional mosquito swatters and fly swatters cannot easily reach them. Especially when dealing with flies, cockroaches, centipedes, and other insects, this "insect-killing flying carpet" tool provides a very environmentally friendly and safe way to kill and capture insects. It is a general-purpose item for human daily life, suitable for personal or household use.
[0065] Referring to Figure 1, an insect-catching tool is shown, comprising at least: a support layer 1 and a trapping layer 2, both of which are deformable, absorbent materials; the trapping layer 2 is overlapped and fixed to the support layer 1; during insect-catching, the trapping layer covers the plane where the insect is located. It absorbs water and drains until it no longer drips, maintaining a certain degree of stiffness.
[0066] Optionally, the support layer 1 is made of absorbent materials such as cotton yarn, sponge, or imitation cotton yarn, either alone, in combination, or layered, and the support layer 1 is configured for cleaning.
[0067] Preferably, the supporting layer 1 and the trapping layer 2 have a square structure, with a diameter (side length) of 16-36 cm and a thickness of about 2 cm. They maintain a certain degree of rigidity in a semi-dry state and can be bent and deformed.
[0068] Optionally, the size of the trapping layer 2 is smaller than that of the supporting layer 1.
[0069] Alternatively, in other embodiments, the size of the trapping layer 2 may be equal to or greater than that of the supporting layer 1.
[0070] Optionally, the trapping layer 3 is a cotton towel layer with a side length of 21 cm and a thickness of 0.5 to 1.0 cm.
[0071] When killing insects, the trapping layer 2 covers the plane where the insect is located, which can then be used to swat and kill the mosquitoes.
[0072] Referring to Figure 2, the insect-catching tool also includes an intermediate layer 3, which is disposed between the supporting layer 1 and the insect-catching layer 2, and is centered and stacked in the same direction for fixation.
[0073] Optionally, the support layer 1 is made of cotton yarn, sponge, or imitation cotton yarn and can be used as a cleaning layer. The support layer 1 is a square with a side length of 30 cm, that is, the size of the support layer is 30 cm × 30 cm.
[0074] Optionally, the middle layer 3 is a sponge layer with a side length of 18 cm and a thickness of 1.2 cm.
[0075] Alternatively, in other embodiments, the materials used to prepare the trapping layer and the supporting layer are water-absorbing materials.
[0076] Alternatively, in other embodiments, the absorbent material includes cotton yarn, and the thickness of at least one of the trapping layer and the supporting layer is 1 to 2 centimeters.
[0077] Alternatively, in other embodiments, the insect-catching tool is square with a side length of 20 centimeters and has rigidity and deformability.
[0078] Before use, soak the tool in water and then drain it until it is no longer dripping. Tools with a specific gravity close to water do not need to be soaked. When you find mosquitoes, flies, or other insects resting or crawling on walls, ceilings, or near corners, simply use your dominant palm to hold the mosquito-repelling blanket flat, aim at the insect, and push the blanket out with appropriate force, keeping the blanket parallel to the insect's resting surface. The blanket will cover the surface where the insect has rested. This method of use is less likely to leave blood or other stains where the insect has rested. Even if there is a small amount of blood, it can be wiped away immediately with a clean surface. Generally, the insects will be tightly covered by the trapping surface, making them easy to handle.
[0079] It should be noted that this tool can also be made from flexible materials such as plastic with a weight equal to or close to that of water. In this case, it can be used without wetting the tool, but its cleaning function will be limited.
[0080] In summary, the insect-catching tool disclosed herein needs to be absorbent, which increases its weight, enhances the adhesiveness of the catching surface, and provides a cleaning function. Secondly, it must retain a certain degree of rigidity after absorbing water to maintain its stable shape and direction of flight, ensuring parallel coverage of the insect-catching surface. Even when encountering non-planar contact surfaces, it should be able to bend and deform, exhibiting both rigidity and flexibility. This allows for all-around targeting and capture of insects, even in hard-to-reach areas. The insect-catching flying carpet only requires immersion in water, poses no risk of electric shock, is suitable for the whole family, and is energy-saving and environmentally friendly.
[0081] Furthermore, the supporting layer of the insect-catching tool manufactured in this disclosure is made of a deformable, absorbent material, possessing both a certain degree of rigidity and flexibility, allowing it to perfectly conform to corners and other narrow spaces. Simultaneously, the main material of the insect-catching tool is cotton fabric, resulting in a long service life, making it a very suitable and durable everyday item.
[0082] Secondly, this disclosure is used to manufacture composite structure towels, referring to Figure 1, and includes at least: a support layer 1 and a functional layer 2, wherein the support layer may be a cotton-like single-layer towel; and the functional layer should be a pure cotton single-layer towel.
[0083] The functional layer and the supporting layer are aligned at their centers, stacked in the same direction, and fixed together.
[0084] When washing your face or taking a shower, only the functional layer should come into contact with the areas used for washing your face and body.
[0085] Optionally, the size of the functional layer is smaller than the size of the supporting layer.
[0086] Referring to Figure 2, the composite structure towel may also include an intermediate layer 3, which is disposed between the support layer and the functional layer and is centered and stacked in the same direction.
[0087] Preferably, the middle layer is a high-quality cosmetic sponge material layer.
[0088] Optionally, the intermediate layer is 36 cm long, 22 cm wide, and 1 cm thick.
[0089] Optionally, the support layer is made of cotton yarn, sponge, or cotton-like material, and the support layer can be used for cleaning.
[0090] Optionally, the support layer has dimensions of 42 cm in length, 26 cm in width, and 0.2–0.3 cm in thickness.
[0091] Optionally, the functional layer is 39 cm long, 25 cm wide, and 0.2–0.3 cm thick.
[0092] Optionally, the functional layer is a high-quality cotton towel layer.
[0093] The advantage of this invention in manufacturing towels is that it greatly improves both comfort and convenience.
[0094] Furthermore, this disclosure pertains to the manufacture of composite structure flying carpets, replacing plastic flying discs. These composite structure flying carpets, after being soaked in water and squeezed dry until no water drips, are used and comprise at least: a wing layer, an intermediate stabilizing layer, and a surface layer. The wing layer and surface layer can be made of pure cotton or cotton-like materials. The intermediate stabilizing layer should be a harmless sponge material.
[0095] The wing layer, intermediate stabilizing layer, and surface layer are aligned, stacked in the same direction, and fixed.
[0096] Preferably, the intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1 to 1.5 cm.
[0097] Preferably, the wing layer is a square with a side length of 30 cm and a thickness of 0.2 to 0.3 cm.
[0098] Preferably, the surface layer is a square with a side length of 21 to 22 cm and a thickness of 0.2 to 0.3 cm.
[0099] Optionally, the intermediate stabilizing layer is a high-quality sponge layer.
[0100] Optionally, the aforementioned wing layer, intermediate stabilizing layer, and surface layer can all be changed to circles of the corresponding diameter.
[0101] The advantages of this invention for manufacturing flying carpets to replace frisbees are that it greatly improves comfort, safety, and user experience.
[0102] Finally, this disclosure can be used to manufacture a composite structure cleaning mat to replace commonly used single-layer cleaning cloths. This composite structure cleaning mat, after being soaked in water and wrung out until no longer dripping, significantly improves ease of use and comfort. It effectively replaces ordinary dishcloths.
[0103] This composite cleaning blanket includes at least: a gripping layer, a middle stabilizing layer, and a cleaning layer. The gripping and cleaning layers can be made of pure cotton or a highly absorbent cotton-like material. The middle stabilizing layer should be a harmless sponge material.
[0104] The holding layer, intermediate stabilizing layer, and cleaning layer are aligned, stacked in the same direction, and fixed.
[0105] Preferably, the intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1 to 1.5 cm.
[0106] Preferably, the gripping layer is a square with a side length of 30 cm and a thickness of 0.1 to 0.2 cm.
[0107] Preferably, the cleaning layer is a square with a side length of 21-22 cm and a thickness of 0.2-0.3 cm.
[0108] Optionally, the aforementioned holding layer, intermediate stabilizing layer, and cleaning layer can all be replaced with circles of the corresponding diameter.
[0109] The advantages of this invention for manufacturing composite structure cleaning blankets instead of single-layer cleaning cloths are that they greatly improve comfort, convenience, and user experience. Industrial applicability
[0110] This disclosure provides a composite structure for multi-field, multi-purpose water-containing tools and its preparation method. This composite structure has wide applications and is suitable for different products in various fields, and has excellent utilization value.
Claims
1. A composite structure for a multi-field, multi-purpose water-bearing tool, characterized in that, It is fixed by two or more layers of absorbent material, and the method of fixing by overlapping includes detachable overlapping or non-detachable overlapping.
2. The composite structure according to claim 1, characterized in that, The composite structure is an insect-catching tool, which includes at least a support layer and an insect-catching layer, both of which are deformable water-absorbing materials. The trapping layer and the supporting layer are stacked and fixed together; When trapping insects, the trapping layer is configured to cover the plane where the insect is located.
3. The composite structure according to claim 2, characterized in that, The size of the trapping layer is smaller than the size of the supporting layer.
4. The composite structure according to claim 2 or 3, characterized in that, The insect-catching tool also includes an intermediate layer, which is disposed between the supporting layer and the insect-catching layer and is stacked and fixed together.
5. The composite structure according to claim 4, characterized in that, The intermediate layer is a sponge layer.
6. The composite structure according to claim 4 or 5, characterized in that, The intermediate layer has a side length of 18 cm and a thickness of 1.2 cm.
7. The composite structure according to claims 2 to 6, characterized in that, The support layer is made of cotton yarn, sponge, or imitation cotton yarn material, and the support layer is configured to be clean.
8. The composite structure according to claims 2 to 7, characterized in that, The dimensions of the support layer are 30 cm × 30 cm.
9. The composite structure according to claim 8, characterized in that, The trapping layer has a side length of 21 cm and a thickness of 1.2 cm.
10. The composite structure according to claims 2 to 9, characterized in that, The trapping layer is a cotton towel layer.
11. The composite structure according to claims 2 to 10, characterized in that, The materials used to prepare the trapping layer and the supporting layer are water-absorbing materials.
12. The composite structure according to claim 11, characterized in that, The absorbent material includes cotton yarn, and the thickness of at least one of the trapping layer and the supporting layer is 1 to 2 centimeters.
13. The composite structure according to claim 11, characterized in that, The insect-catching tool is square with a side length of 20 centimeters.
14. The composite structure according to claim 1, characterized in that, The composite structure is a composite structure towel, which includes at least a support layer and a functional layer, wherein the support layer is a cotton-like single-layer towel; the functional layer is a pure cotton single-layer towel and is configured to come into contact with the face or body parts. The functional layer and the supporting layer are aligned at their centers, stacked in the same direction, and fixed together.
15. The composite structure according to claim 14, characterized in that, The composite structure towel also includes an intermediate layer, which is disposed between the support layer and the functional layer, and is centered and stacked and fixed in the same direction.
16. The composite structure according to claim 15, characterized in that, The middle layer is a cosmetic sponge material.
17. The composite structure according to claim 15 or 16, characterized in that, The middle layer is 36 cm long, 22 cm wide, and 1 cm thick.
18. The composite structure according to claims 14-17, characterized in that, The support layer is made of cotton yarn or cotton-like material, and the support layer is designed to clean the human body.
19. The composite structure according to claim 17 or 18, characterized in that, The supporting layer measures 42 cm in length, 26 cm in width, and 0.2–0.3 cm in thickness; the functional layer measures 39 cm in length, 25 cm in width, and 0.2–0.3 cm in thickness.
20. The composite structure according to claim 1, characterized in that, The composite structure is a composite structure flying carpet, which includes at least: a wing layer, an intermediate stabilizing layer, and a surface layer, wherein the wing layer and the surface layer are both made of pure cotton or cotton-like materials; and the intermediate stabilizing layer is made of sponge material. The wing layer, intermediate stabilizing layer, and surface layer are aligned, stacked in the same direction, and fixed.
21. The composite structure according to claim 20, characterized in that, The intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1–1.5 cm; the wing layer is a square with a side length of 30 cm and a thickness of 0.2–0.3 cm; and the surface layer is a square with a side length of 21–22 cm and a thickness of 0.2–0.3 cm.
22. The composite structure according to claim 20 or 21, characterized in that, The wing layer, intermediate stabilizing layer, and surface layer are all circular.
23. The composite structure according to claim 1, characterized in that, The composite structure is a composite structure cleaning blanket, which includes at least: a gripping layer, a middle stabilizing layer, and a cleaning layer. The gripping layer and the cleaning layer are made of pure cotton or cotton-like materials; the middle stabilizing layer is made of sponge material; and the gripping layer, the middle stabilizing layer, and the cleaning layer are aligned at their centers, stacked in the same direction, and fixed together.
24. The composite structure according to claim 23, characterized in that, The intermediate stabilizing layer is a square with a side length of 18 cm and a thickness of 1–1.5 cm; the gripping layer is a square with a side length of 30 cm and a thickness of 0.1–0.2 cm. The cleaning layer is a square with a side length of 21-22 cm and a thickness of 0.2-0.3 cm.
25. The composite structure according to claim 23 or 24, characterized in that, The gripping layer, intermediate stabilizing layer, and cleaning layer are all circular.
26. A method for preparing the composite structure as described in claims 1-25, characterized in that, This includes stacking and fixing two or more layers of absorbent material.