Ultrafine denier degradable nonwoven fabric
By using a double-layer biodegradable nonwoven fabric layer and a drainage-hole dirt-collecting cavity design, the problem of insufficient water-locking capacity and secondary pollution of ultra-fine denier fiber nonwoven fabric after absorbing liquid is solved, achieving efficient cleaning and biodegradability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HAOYUE IND
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing microfiber nonwoven fabrics have insufficient water-locking capacity after absorbing liquid, and impurities in the liquid are easy to fall off, causing secondary pollution. Furthermore, increasing the thickness will increase costs and make degradation more difficult.
It adopts a structure with a double layer of biodegradable nonwoven fabric and a connecting layer. It uses biodegradable ultra-fine denier fibers to form a capillary structure and achieves effective locking of liquids and impurities through the design of flow guide holes and dirt-holding cavities. The connecting layer is bonded with a biodegradable hot melt adhesive mesh.
It enhances liquid adsorption and dirt-locking capabilities, reduces secondary pollution, maintains a soft touch, and is biodegradable overall, making it environmentally friendly.
Smart Images
Figure CN224528210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nonwoven fabrics, and in particular to a biodegradable nonwoven fabric made of ultrafine denier fibers. Background Technology
[0002] The small diameter of microfiber results in nonwoven fabrics with low bending stiffness and a soft touch, making them suitable for cleaning sensitive skin and delicate parts.
[0003] Nonwoven fabrics made of ultra-fine denier fibers utilize the micropores between the fibers to form capillary structures, enabling them to quickly absorb liquids. However, their water-locking ability is limited by their thickness. To increase the water-locking ability of nonwoven fabrics after absorbing liquids, it is usually necessary to increase the thickness of the nonwoven fabric, which increases costs and the difficulty of degradation. Moreover, because the micropores are relatively small, impurities in the liquid cannot enter the interior of the nonwoven fabric through the micropores and only adhere to the surface of the nonwoven fabric, making them prone to detachment and causing secondary pollution. Therefore, improvements are needed. Utility Model Content
[0004] The purpose of this invention is to provide a biodegradable nonwoven fabric with ultra-fine denier fibers, which enhances the ability to adsorb liquids and lock in dirt, thereby improving the cleaning and biodegradability effects.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A biodegradable nonwoven fabric made of ultrafine denier fibers includes: a first biodegradable nonwoven fabric layer, a second biodegradable nonwoven fabric layer, and a connecting layer. The connecting layer is disposed above the second biodegradable nonwoven fabric layer, and the first biodegradable nonwoven fabric layer is disposed above the connecting layer. The first and second biodegradable nonwoven fabric layers are respectively made of biodegradable ultrafine denier fibers. The connecting layer has first dirt-holding cavities spaced apart. The first biodegradable nonwoven fabric layer has first drainage holes located above the first dirt-holding cavities. The connecting layer has second dirt-holding cavities spaced apart. The second biodegradable nonwoven fabric layer has second drainage holes located below the second dirt-holding cavities.
[0007] The biodegradable ultrafine denier fiber has a fiber fineness of less than 0.55 dtex.
[0008] The biodegradable ultrafine denier fiber is made of ultrafine denier polylactic acid fiber.
[0009] The first and second dirt-collecting cavities are misaligned.
[0010] The diameters of the first and second guide holes are no greater than 3 mm.
[0011] The connecting layer is made of biodegradable hot melt adhesive mesh.
[0012] The biodegradable hot melt adhesive film is made of polyurethane biodegradable hot melt adhesive film.
[0013] The beneficial effects of this utility model are as follows: A biodegradable nonwoven fabric with ultra-fine denier fibers, wherein the first and second biodegradable nonwoven fabric layers are made of biodegradable ultra-fine denier fibers, which are soft to the touch, control the overall thickness, and have good biodegradability. The micropores between the biodegradable ultra-fine denier fibers form a capillary structure, which can quickly adsorb liquids and improve the ability to adsorb liquids. The first and second guide holes allow the liquid and impurities in the liquid to enter the first and second dirt-holding cavities, which improve the dirt-locking ability, reduce secondary pollution problems, and improve cleaning efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 yes Figure 1 A top view of the first biodegradable nonwoven fabric layer. Detailed Implementation
[0016] The following is combined Figures 1 to 2 The technical solution of this utility model will be further illustrated through specific embodiments.
[0017] like Figure 1 As shown, the microfiber biodegradable nonwoven fabric includes: a first biodegradable nonwoven layer 1, a second biodegradable nonwoven layer 2, and a connecting layer 3. The connecting layer 3 is disposed above the second biodegradable nonwoven layer 2, and the first biodegradable nonwoven layer 1 is disposed above the connecting layer 3. In this embodiment, the connecting layer 3 uses a biodegradable hot melt adhesive web, and the first biodegradable nonwoven layer 1 and the second biodegradable nonwoven layer 2 are bonded together by hot pressing, resulting in a stable structure. Specifically, the biodegradable hot melt adhesive web is a polyurethane biodegradable hot melt adhesive web, which is biodegradable, reducing environmental pollution.
[0018] To reduce environmental pollution, the first biodegradable nonwoven layer 1 and the second biodegradable nonwoven layer 2 are made of biodegradable nonwoven fabrics made of biodegradable ultrafine denier fibers. The biodegradable ultrafine denier fibers are ultrafine denier polylactic acid fibers, and the whole structure becomes biodegradable after use.
[0019] In this embodiment, the biodegradable ultrafine denier fibers have a fiber fineness of less than 0.55 dtex and a relatively small diameter. The resulting biodegradable nonwoven fabric has low bending stiffness, a soft touch, and causes minimal damage to sensitive skin and precision parts during cleaning. Furthermore, the micropores between the biodegradable ultrafine denier fibers form a capillary structure, allowing for rapid liquid absorption during the cleaning process.
[0020] like Figure 1 As shown, first dirt-holding cavities 31 are spaced apart on the connecting layer 3, and first guide holes 11 are provided on the first biodegradable nonwoven fabric layer 1 above the first dirt-holding cavities 31. Figure 2 As shown, there are many first guide holes 11. When cleaning is carried out using the first biodegradable non-woven fabric layer 1 as the working surface, the liquid and impurities in the liquid can enter the corresponding first dirt-holding cavity 31 through multiple first guide holes 11, thereby improving the dirt-locking ability.
[0021] A second dirt-holding cavity 32 is provided at intervals on the connecting layer 3. A second guide hole 21 is provided on the second biodegradable nonwoven fabric layer 2 below the second dirt-holding cavity 32. When cleaning is carried out using the second biodegradable nonwoven fabric layer 2 as a working surface, the liquid in contact and the impurities in the liquid can enter the corresponding second biodegradable nonwoven fabric layer 2 through multiple second guide holes 21. The dirt-locking effect is good, and the problem of impurities flowing out and causing secondary pollution is reduced.
[0022] In this embodiment, the first fouling chamber 31 and the second fouling chamber 32 are offset and not connected to each other, reducing the problem of impurities flowing out of the first fouling chamber 31 and the second fouling chamber 32. The diameter of the first guide hole 11 and the second guide hole 21 is no greater than 3mm, and the first guide hole 11 and the second guide hole 21 can be punched to a diameter of 2mm, which is convenient for processing and facilitates the passage of impurities with a particle size of 2mm through the first guide hole 11 and the second guide hole 21.
[0023] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. A biodegradable nonwoven fabric made of ultrafine denier fibers, characterized in that, include: The system comprises a first biodegradable nonwoven fabric layer, a second biodegradable nonwoven fabric layer, and a connecting layer. The connecting layer is disposed above the second biodegradable nonwoven fabric layer, and the first biodegradable nonwoven fabric layer is disposed above the connecting layer. The first and second biodegradable nonwoven fabric layers are respectively made of biodegradable ultrafine denier fibers. The connecting layer has a first dirt-holding cavity spaced apart. The first biodegradable nonwoven fabric layer has a first drainage hole located above the first dirt-holding cavity. The connecting layer has a second dirt-holding cavity spaced apart. The second biodegradable nonwoven fabric layer has a second drainage hole located below the second dirt-holding cavity.
2. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 1, characterized in that, The biodegradable ultrafine denier fiber has a fiber fineness of less than 0.55 dtex.
3. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 1, characterized in that, The biodegradable ultrafine denier fiber is made of ultrafine denier polylactic acid fiber.
4. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 1, characterized in that, The first and second dirt-collecting cavities are misaligned.
5. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 1, characterized in that, The diameters of the first and second guide holes are no greater than 3 mm.
6. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 1, characterized in that, The connecting layer is made of biodegradable hot melt adhesive mesh.
7. The biodegradable nonwoven fabric of ultrafine denier fibers according to claim 6, characterized in that, The biodegradable hot melt adhesive web is made of polyurethane biodegradable hot melt adhesive web.