Nonwoven fabric having functional particles
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANTUM JINZHOU (TIANJIN) NONWOVENS CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-21
AI Technical Summary
In existing nonwoven fabrics, functional particles are prone to detachment, resulting in poor bonding.
An interwoven layer structure is adopted, in which the filamentous fibers of the first and second nonwoven fabric layers are cross-bonded and stacked in a molten state, and functional particles are randomly distributed in the interwoven layer. Both the first and second nonwoven fabric layers are meltblown nonwoven fabrics.
This improves the bonding strength between functional particles and nonwoven fabric, reduces the possibility of functional particles detaching, and enhances the stability of nonwoven fabric in use.
Smart Images
Figure CN224531191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of nonwoven fabrics, specifically providing a nonwoven fabric with functional particles. Background Technology
[0002] Non-woven fabric, also known as non-woven textile, is a fibrous product formed directly through physical, chemical, or mechanical means without the need for traditional spinning and weaving processes. It can be made in various thicknesses, textures, and hardnesses, and features moisture resistance, breathability, flexibility, lightness, low cost, good filtration, and recyclability. Non-woven fabrics can be used in various industries, such as medical, clothing, household goods, and industrial applications, for purposes such as sound insulation, heat insulation, and adsorption filtration.
[0003] In some cases, functional particles need to be added to nonwoven fabrics to give them specific functions, thereby improving their applicability and performance. For example, activated carbon particles are added to nonwoven fabrics to enhance their adsorption properties. However, currently, the functional particles added to nonwoven fabrics have poor binding effects and are prone to detaching from the fabric.
[0004] Therefore, there is an urgent need for a nonwoven fabric with functional particles to solve the problem that functional particles are easily detached in existing nonwoven fabrics. Utility Model Content
[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that functional particles in existing nonwoven fabrics are easy to detach.
[0006] In a first aspect, the present invention provides a nonwoven fabric with functional particles, comprising: a first nonwoven layer, a second nonwoven layer, and functional particles, wherein the first nonwoven layer and the second nonwoven layer are both meltblown nonwoven fabrics, and the first nonwoven layer and the second nonwoven layer have an interlacing layer, wherein the interlacing layer has filamentous fibers constituting the first nonwoven layer and filamentous fibers constituting the second nonwoven layer, and the filamentous fibers constituting the first nonwoven layer and the filamentous fibers constituting the second nonwoven layer are cross-bonded and stacked, and the functional particles are randomly distributed within the interlacing layer.
[0007] In the specific embodiments of the nonwoven fabric with functional particles described above, both the first nonwoven fabric layer and the second nonwoven fabric layer are porous structures formed by disordered stacking of filamentous fibers.
[0008] In the specific embodiment of the nonwoven fabric with functional particles described above, some of the filamentous fibers in the first nonwoven fabric layer contact and bond with the functional particles in a molten state, and some of the filamentous fibers in the second nonwoven fabric layer contact and bond with the functional particles in a molten state.
[0009] In the specific embodiment of the nonwoven fabric with functional particles described above, the material of the first nonwoven fabric layer and the material of the second nonwoven fabric layer are the same, and the material of the first nonwoven fabric layer and the material of the second nonwoven fabric layer are any one of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide, and polyamide.
[0010] In the specific embodiment of the nonwoven fabric with functional particles described above, the materials of the first nonwoven fabric layer and the second nonwoven fabric layer are different. The materials of the first nonwoven fabric layer and the second nonwoven fabric layer are any two of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide, and polyamide.
[0011] In the specific embodiments of the nonwoven fabric with functional particles described above, the functional particles 3 are any one or more of activated carbon particles, zeolite molecular sieves, and montmorillonite particles.
[0012] In the specific embodiments of the nonwoven fabric with functional particles described above, the functional particles 3 are any one or more of titanium dioxide particles, zinc oxide particles, and chitosan particles.
[0013] In the specific embodiments of the nonwoven fabric with functional particles described above, the functional particles 3 are any one of graphene particles, carbon black particles, or metal particles.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] The nonwoven fabric with functional particles provided by this utility model includes a first nonwoven layer, a second nonwoven layer, and functional particles. Both the first and second nonwoven layers are meltblown nonwoven fabrics. An interlacing layer exists between the first and second nonwoven layers, containing filamentous fibers constituting both the first and second nonwoven layers. These filamentous fibers are cross-bonded and stacked, and the functional particles are randomly distributed within the interlacing layer. The interlacing layer is formed by interlacing the filamentous fibers forming the first and second nonwoven layers in a molten state. The functional particles are added during the interlacing process of the two filamentous fibers, thereby forming them within the interlacing layer, which enhances the bonding force between the functional particles and the first and second nonwoven layers. Attached Figure Description
[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:
[0017] Figure 1 This is a cross-sectional view of the nonwoven fabric provided by this utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1. First nonwoven layer; 2. Second nonwoven layer; 3. Functional particles; 4. Interwoven layer. Detailed Implementation
[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0021] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] Currently, there are two ways to form functional particles added to nonwoven fabrics.
[0024] In the first formation method, reference can be made to the patent application filed by the applicant in 2020 with publication number CN212426373U. Before the filaments formed by meltblowing enter the web forming machine, the functional particles are blown to adhere to one side of the filaments formed by meltblowing. In this method, most of the functional particles in the nonwoven fabric have one side exposed. When touched by external force, they are very easy to detach from the nonwoven fabric, resulting in a decrease in performance.
[0025] In another formation method, a pre-formed single-layer nonwoven fabric is used as the substrate. Functional particles are sprinkled on the substrate and a material layer is then covered by a melt-blowing method. The material layer formed later is used to bond the substrate and the functional particles. Although the functional particles of this type of nonwoven fabric are protected by the substrate and the material layer formed later, and the functional particles are not directly touched by external forces, the following problems still exist: (1) The substrate, functional particles and the material layer form a sandwich structure with very obvious layers, resulting in weak bonding between the functional particles and the material layer. At the same time, there is almost no bonding between the functional particles and the substrate, making them easy to detach; (2) Since the nonwoven fabric as the substrate and the material layer formed later are both porous structures formed by disordered superposition of filamentous fibers, the functional particles are easy to enter the pores of the substrate after being sprinkled on it, resulting in poor bonding between the functional particles and the material layer formed later. The functional particles are also very easy to detach from the substrate and the material layer formed later after being impacted or vibrated; (3) Since the functional particles may isolate the nonwoven fabric as the substrate, the adhesion effect between the material layer formed later and the substrate will be poor, making them easy to separate.
[0026] Based on this, such as Figure 1 As shown, this utility model provides a nonwoven fabric with functional materials, including a first nonwoven layer 1, a second nonwoven layer 2, and functional particles 3. The first and second nonwoven layers 1 and 2 have an interlacing layer 4. The interlacing layer 4 contains filamentous fibers constituting both the first and second nonwoven layers 1 and 2. These fibers are cross-bonded and stacked, thereby improving the bonding strength between the first and second nonwoven layers 1 and reducing the possibility of separation between them. The functional particles 3 are randomly distributed within the interlacing layer 4. It should be noted that although the functional particles 3 are randomly distributed within the interlacing layer 4, their distribution density is relatively uniform.
[0027] In this design, both the first nonwoven layer 1 and the second nonwoven layer 2 are meltblown nonwoven fabrics, and they are formed simultaneously through meltblowing. During the forming process, molten filamentous fibers are sprayed out through a meltblown head, and then passed through a web-forming machine to form a disordered, stacked, porous mesh structure. Both the first and second nonwoven layers are formed from meltblown filamentous fibers in a molten or semi-molten state after web-forming. The filamentous fibers in the first and second nonwoven layers can interweave after meltblowing, thus forming an interwoven layer 4. Functional particles 3 are added between the two strands of filamentous fibers forming the first and second nonwoven layers 1 and 2 during the interweaving process, so that the functional particles 3 can be located within the interwoven layer 4 after the first and second nonwoven layers 1 and 2 are web-formed.
[0028] In the first nonwoven layer 1, some filamentous fibers contact and adhere to the functional particles 3 in a molten state. Similarly, in the second nonwoven layer 2, some filamentous fibers contact and adhere to the functional particles 3 in a molten state. This enhances the bonding strength between the functional particles 3 and the first and second nonwoven layers 1 and 2, effectively improving the reliability of the functional particles 3's adhesion within the nonwoven fabric and reducing the possibility of the functional particles 3 detaching from the nonwoven fabric. Furthermore, by using the first and second nonwoven layers 1 and 2 to protect the functional particles 3, the functional particles 3 are completely encapsulated, preventing direct collisions with the functional particles 3 during the use of the nonwoven fabric and further reducing the possibility of the functional particles detaching from the nonwoven fabric.
[0029] For example, both the first nonwoven layer 1 and the second nonwoven layer 2 are porous structures formed by the disordered stacking of filamentous fibers. The porous structure of the first nonwoven layer 1 and the second nonwoven layer 2 can provide sufficient buffering capacity, so that the nonwoven fabric can reduce the impact of external forces on the functional particles 3 during use, thereby reducing the possibility that the functional particles 3 will detach from the first nonwoven layer 1 or the second nonwoven layer 2 after being impacted.
[0030] For example, the filamentous fibers of either the first nonwoven layer 1 or the second nonwoven layer 2 are single-component fibers. Alternatively, the filamentous fibers of either the first nonwoven layer 1 or the second nonwoven layer 2 are bicomponent fibers, such as core-sheath bicomponent fibers or side-by-side bicomponent fibers.
[0031] For example, the material of the first nonwoven layer 1 and the second nonwoven layer 2 may be the same, or the materials of the first nonwoven layer 1 and the second nonwoven layer 2 may be any one of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide, and polyamide. Alternatively, the materials of the first nonwoven layer 1 and the second nonwoven layer 2 may be different, or the materials of the first nonwoven layer 1 and the second nonwoven layer 2 may be any two of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide, and polyamide. When the first and second nonwoven layers are made of polylactic acid, they are biodegradable.
[0032] There are many types of materials for functional particles 3, which are determined by the product requirements and characteristics of nonwoven fabrics.
[0033] For example, functional particle 3 can be any one or more of activated carbon particles, zeolite molecular sieves, and montmorillonite particles. Activated carbon particles have good adsorption effects and can adsorb tiny particles, such as dust, passing through nonwoven fabrics. Zeolite molecular sieves are natural and synthetic crystalline aluminosilicates with molecular sieve properties, capable of adsorbing volatile organic compounds, ammonia, etc. Nonwoven fabrics with added zeolite molecular sieves can be used for air purification or industrial waste gas treatment. Montmorillonite particles can adsorb heavy metal ions and organic pollutants; nonwoven fabrics with added montmorillonite particles can be used for water treatment or medical dressings.
[0034] For example, functional particle 3 can be any one or more of titanium dioxide particles, zinc oxide particles, and chitosan particles. Titanium dioxide particles can perform photocatalysis to degrade organic matter and kill bacteria; nonwoven fabrics with added titanium dioxide particles can be used for self-cleaning or air purification. Zinc oxide particles have antibacterial and UV-resistant properties; nonwoven fabrics with added zinc oxide can be used to make protective clothing or outdoor products. Chitosan particles are natural antibacterial agents with good biocompatibility; nonwoven fabrics with added chitosan particles can be used in medical products or biodegradable products.
[0035] It should be noted that the nonwoven fabric provided by this utility model can be composited with meltblown filter materials, spunbond nonwoven fabrics, hot-air nonwoven fabrics, needle-punched nonwoven fabrics, etc., to improve the filtration and adsorption effects of the composite products. In other words, the nonwoven fabric provided by this utility model can be an intermediate product, which is then composited with other types of materials (such as meltblown filter materials, spunbond nonwoven fabrics, hot-air nonwoven fabrics, needle-punched nonwoven fabrics, etc.) through other processes before being used together.
[0036] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A nonwoven fabric with functional particles, characterized in that, include: The first nonwoven layer (1), the second nonwoven layer (2), and the functional particles (3) are both meltblown nonwoven fabrics. The first nonwoven layer (1) and the second nonwoven layer (2) have an interlacing layer (4). The interlacing layer (4) contains filamentous fibers that constitute the first nonwoven layer (1) and filamentous fibers that constitute the second nonwoven layer (2). The filamentous fibers that constitute the first nonwoven layer (1) and the filamentous fibers that constitute the second nonwoven layer (2) are cross-bonded and stacked. The functional particles (3) are randomly distributed in the interlacing layer (4).
2. The nonwoven fabric with functional particles according to claim 1, characterized in that, Both the first nonwoven layer (1) and the second nonwoven layer (2) are porous structures formed by disordered stacking of filamentous fibers.
3. The nonwoven fabric with functional particles according to claim 1, characterized in that, In the first nonwoven layer (1), some of the filamentous fibers come into contact with and adhere to the functional particles (3) in a molten state, and in the second nonwoven layer (2), some of the filamentous fibers come into contact with and adhere to the functional particles (3) in a molten state.
4. The nonwoven fabric with functional particles according to claim 1, characterized in that, The material of the first nonwoven layer (1) is the same as that of the second nonwoven layer (2). The materials of the first nonwoven layer (1) and the second nonwoven layer (2) are any one of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide, and polyamide.
5. The nonwoven fabric with functional particles according to claim 1, characterized in that, The material of the first nonwoven layer (1) is different from that of the second nonwoven layer (2). The materials of the first nonwoven layer (1) and the second nonwoven layer (2) are any two of polypropylene, polyethylene, polylactic acid, polyphenylene sulfide and polyamide.