Air filtering non-woven fabric with multi-layer structure

Abstract

The utility model discloses an air filtering non-woven fabric with a multilayer structure, which comprises a base layer non-woven fabric, a first activated carbon layer arranged on the front end face of the base layer non-woven fabric, a second activated carbon layer arranged on the rear end face of the base layer non-woven fabric, a first nanofiber layer arranged on the front end face of the first activated carbon layer, and a second nanofiber layer arranged on the rear end face of the second activated carbon layer. A first nanofiber layer is arranged on the front end face of the first activated carbon layer, a second nanofiber layer is arranged on the rear end face of the second activated carbon layer, a first gauze mesh layer is arranged on the front end face of the first nanofiber layer, and a second gauze mesh layer is arranged on the rear end face of the second nanofiber layer. The activated carbon particles can be uniformly distributed on the first activated carbon layer and the second activated carbon layer, the positions of the activated carbon particles are fixed, the enrichment degree of the functional activated carbon particles is higher through the multi-layer structural design, and the overall adsorption capacity of activated carbon components in the non-woven fabric is greatly improved; the non-woven fabric provided by the utility model has a better adsorption effect on formaldehyde, the working procedure is simpler, and the labor cost and the production cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabrics, in particular to an air filtering non-woven fabric with a multi-layer structure. Background Art

[0002] As stated in the published patent CN220409855U, "non-woven fabrics are moisture-proof, breathable, flexible, lightweight, non-combustible, easily decomposed, non-toxic and non-irritating, colorful, low-priced and recyclable, and are therefore widely used in medical, beauty, clothing, industry and agriculture to reduce product production costs and improve product quality. In actual production and use, non-woven fabrics are often made into filter layers to filter air. Specifically, impurities in the air are blocked by the gaps between the layers of fibers on the non-woven fabric to separate impurities from clean air, thereby achieving the effect of air purification.

[0003] Existing formaldehyde-removing nonwoven fabrics are often made by grinding activated carbon particles into powder and adding the powder to the fibers of the nonwoven fabric. During the use of such nonwoven fabrics, the activated carbon particles are easily detached from between the fibers of the nonwoven fabric, thereby affecting the formaldehyde absorption effect of the nonwoven fabric. The present application uses multiple limit blocks to limit the activated carbon particles in multiple grooves respectively, so that the activated carbon particles are not easily displaced.

[0004] In summary, in the prior art, activated carbon particles are easily displaced from between non-woven fabric fibers, resulting in uneven distribution of activated carbon particles in the non-woven fabric, which greatly reduces the overall use effect of the activated carbon component in the non-woven fabric. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a technical solution of a multi-layered air filtering nonwoven fabric to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multi-layered air filtration nonwoven fabric comprises a base nonwoven fabric, wherein a first activated carbon layer is disposed on the front end surface of the base nonwoven fabric, a second activated carbon layer is disposed on the rear end surface of the base nonwoven fabric, a first nanofiber layer is disposed on the front end surface of the first activated carbon layer, a second nanofiber layer is disposed on the rear end surface of the second activated carbon layer, a first gauze mesh layer is disposed on the front end surface of the first nanofiber layer, and a second gauze mesh layer is disposed on the rear end surface of the second nanofiber layer;

[0008] The first activated carbon layer includes a plurality of first accommodating strips arranged in parallel, a first accommodating chamber is provided in the first accommodating strip, activated carbon particles are installed in the first accommodating chamber, and a plurality of first welding sealing strips are evenly provided along the length direction of the first accommodating strip, the first welding sealing strips divide the first accommodating chamber into a plurality of independent first sealed chambers;

[0009] The second activated carbon layer includes a plurality of second accommodating strips arranged in parallel, a second accommodating chamber is provided in the second accommodating strip, activated carbon particles are installed in the second accommodating chamber, and a plurality of second welding sealing strips are evenly provided along the length direction of the second accommodating strip, and the second welding sealing strips divide the second accommodating chamber into a plurality of independent second sealed chambers;

[0010] The first accommodating strip and the second accommodating strip are respectively fixed to the base non-woven fabric by welding through the first welding sealing strip and the second welding sealing strip.

[0011] As a further solution of the utility model: the first accommodating strip and the second accommodating strip are staggered in the length direction.

[0012] As a further solution of the utility model: reinforcing rib lines are respectively provided along the length direction of the first accommodating strip and the second accommodating strip, and a plurality of reinforcing rib lines are arranged in parallel along the width direction.

[0013] As a further solution of the utility model: a connection layer extends inside the first accommodating strip and on the side of the second accommodating strip respectively, and adjacent first accommodating strips are connected and reinforced by the connection layer.

[0014] As a further solution of the utility model: the base nonwoven fabric is arranged in a wave shape, and the wave crests and wave troughs of the base nonwoven fabric are respectively aligned with the first welding sealing strip and the second welding sealing strip.

[0015] As a further solution of the utility model: a photocatalyst layer is provided on the front end surface of the second gauze mesh layer.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The air filtering nonwoven fabric of the utility model is designed with an isolation type structure, so that the activated carbon particles can be evenly distributed in the first activated carbon layer and the second activated carbon layer and the position is fixed. The multi-level structural design makes the enrichment degree of the functional activated carbon particles higher, greatly improving the overall adsorption capacity of the activated carbon component in the nonwoven fabric, so that the nonwoven fabric of the utility model has a better adsorption effect on formaldehyde, and the process is simpler, saving labor and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural explosion diagram of the utility model;

[0019] Figure 2 It is a structural stereogram of the first accommodating strip in the utility model;

[0020] Figure 3 It is a structural stereogram of the adjacent first accommodating bars in the utility model connected to each other;

[0021] Figure 4 It is a top view of the first accommodation strip of the utility model;

[0022] Figure 5 yes Figure 4 Partial view at A in the middle;

[0023] Figure 6 It is a bottom view schematic diagram of the first activated carbon layer and the second activated carbon layer in the utility model;

[0024] The reference numerals and names in the figures are as follows:

[0025] Base non-woven fabric-100, first activated carbon layer-200, second activated carbon layer-300, first nanofiber layer-400, second nanofiber layer-500, first gauze mesh layer-600, second gauze mesh layer-700, first accommodating strip-210, first accommodating chamber-220, first welding sealing strip-230, first sealing chamber-240, reinforcing rib line-260, connecting layer-270, photocatalyst layer-800. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 , a multi-layered air filtration nonwoven fabric, comprising a base nonwoven fabric 100, a first activated carbon layer 200 is provided on the front end surface of the base nonwoven fabric 100, a second activated carbon layer 300 is provided on the rear end surface of the base nonwoven fabric 100, a first nanofiber layer 400 is provided on the front end surface of the first activated carbon layer 200, a second nanofiber layer 500 is provided on the rear end surface of the second activated carbon layer 300, a first gauze mesh layer 600 is provided on the front end surface of the first nanofiber layer 400, and a second gauze mesh layer 700 is provided on the rear end surface of the second nanofiber layer 500;

[0028] The first activated carbon layer 200 includes a plurality of first accommodating bars 210 arranged in parallel, a first accommodating chamber 220 is provided in the first accommodating bar 210, activated carbon particles are installed in the first accommodating chamber 220, and a plurality of first welding sealing bars 230 are evenly provided along the length direction of the first accommodating bar 210, and the first welding sealing bars 230 divide the first accommodating chamber 220 into a plurality of independent first sealing chambers 240;

[0029] The second activated carbon layer 300 includes a plurality of second accommodating bars arranged in parallel, a second accommodating chamber is provided in the second accommodating bar, activated carbon particles are installed in the second accommodating chamber, and a plurality of second welding sealing strips are evenly provided along the length direction of the second accommodating bar, and the second welding sealing strips divide the second accommodating chamber into a plurality of independent second sealed chambers;

[0030] The first accommodating strip 210 and the second accommodating strip are respectively welded and fixed on the base non-woven fabric 100 through the first welding sealing strip 230 and the second welding sealing strip;

[0031] During the production process, a non-woven fabric is firstly used to form a first accommodating strip 210 with an opening of the first accommodating chamber 220, and then a plurality of first welding sealing strips 230 are evenly arranged along the length direction of the first accommodating strip 210 by supplying energy and performing compression welding, so that the first accommodating chamber 220 is divided into a plurality of independent first sealed chambers 240 with openings, and then the plurality of independent first sealed chambers 240 are evenly filled with activated carbon particles. After the activated carbon particles are filled, the first sealed chamber 240 is packaged, so that the first sealed chamber 240 forms a closed space to prevent leakage of the activated carbon particles, and then the first accommodating strip 210 is flattened and dried;

[0032] After the first sealed chamber 240 is packaged, a plurality of enclosed spaces containing activated carbon particles are formed on the first accommodating bar 210. The plurality of first welded sealing strips 230 divide and limit the activated carbon particles in different regions. At the same time, after the first accommodating bar 210 is flattened, the activated carbon particles form a stable supporting structure on the plane. The position of the activated carbon particles cannot be moved at will, thereby ensuring the uniformity of the distribution of the activated carbon particles in each part. The production process of the second accommodating bar is the same as that of the first accommodating bar 210, which will not be described in detail here.

[0033] A plurality of first accommodating bars 210 are arranged in parallel to form a first activated carbon layer 200. The width of the first activated carbon layer 200 can be controlled by increasing or decreasing the number of the first accommodating bars 210. The length of the first activated carbon layer 200 can be controlled by controlling the length of the first accommodating bars 210. Thus, batch production can be performed, production effects are greatly improved, and assembly line-type batch operations are more convenient.

[0034] By supplying energy and performing compression welding, the first accommodating strip 210 and the second accommodating strip are welded (ultrasonic welding, thermal welding, etc.) and fixed on the base non-woven fabric 100, so that the first activated carbon layer 200 and the second activated carbon layer 300 are stably installed on the base non-woven fabric 100, so that the overall structure of the non-woven fabric of the utility model is more stable. By setting the first gauze mesh layer 600 and the second gauze mesh layer 700, on the one hand, impurities can be filtered, and on the other hand, it is easy to breathe. Nanofibers can block wind and filter fine particles, have a barrier effect on aerosols, can prevent toxic substances, can block formaldehyde, and can stop activated carbon particles to avoid leakage;

[0035] The air filtering nonwoven fabric of the utility model is designed with an isolation type structure, so that the activated carbon particles can be evenly distributed in the first activated carbon layer 200 and the second activated carbon layer 300 and the position is fixed. The multi-level structural design makes the enrichment degree of the functional activated carbon particles higher, greatly improving the overall adsorption capacity of the activated carbon component in the nonwoven fabric, so that the nonwoven fabric of the utility model has a better adsorption effect on formaldehyde, and the process is simpler, saving labor and production costs.

[0036] In the embodiment of the utility model, the first accommodation bar 210 and the second accommodation bar are staggered in the length direction;

[0037] like Figure 6 As shown, in the first activated carbon layer 200 and the second activated carbon layer 300, the first accommodating strip 210 and the second accommodating strip are staggered in the length direction. The staggered arrangement allows the first welding sealing strip 230 to be aligned with the second sealing chamber of the second accommodating strip, and the second welding sealing strip to be aligned with the first sealing chamber 240 of the first accommodating strip 210, thereby making the distribution of activated carbon particles in the non-woven fabric of the utility model more uniform and improving the use effect of the non-woven fabric of the utility model.

[0038] In the embodiment of the utility model, reinforcing rib lines 260 are respectively provided along the length direction of the first accommodating strip 210 and the second accommodating strip, and a plurality of reinforcing rib lines 260 are arranged in parallel along the width direction;

[0039] like Figure 2 As shown, after the activated carbon particles are encapsulated in the first sealed chamber 240 / the second sealed chamber, a small amount of the activated carbon particles will move during use. In order to better fix the position of the activated carbon particles, the activated carbon particles on the first accommodating bar 210 and the second accommodating bar are further limited by setting reinforcing rib lines 260, so that the activated carbon particles are more stable. The reinforcing rib lines 260 are made by sewing technology with high production efficiency and low production cost.

[0040] In the embodiment of the utility model, a connection layer 270 extends inside the first accommodating bar 210 and on the side of the second accommodating bar respectively, and adjacent first accommodating bars 210 are connected and reinforced by the connection layer 270;

[0041] like Figure 2 , 3 As shown in Figures 4 and 5, a connecting layer 270 is extended from the upper side surface and the left and right ends of the first accommodating strip 210. The connecting layer 270 is formed by reserving more fabric during the packaging process of the first sealed chamber 240. The connecting layer 270 and the first accommodating strip 210 are an integral structure. The adjacent first accommodating strips 210 are connected and reinforced by the connecting layer 270, so that the overall structure of the first activated carbon layer 200 is more stable. The connecting layer 270 is fixed by welding with the base non-woven fabric 100 along the first welding sealing strip 230. Extending and splicing the first accommodating strip 210 horizontally or vertically through the connecting layer 270 is beneficial to improving the overall structural strength of the non-woven fabric of the utility model. The structure of the second accommodating strip is the same as that of the first accommodating strip 210, which will not be repeated here.

[0042] In the embodiment of the utility model, the base nonwoven fabric 100 is arranged in a wave shape, and the wave crests and wave troughs of the base nonwoven fabric 100 are respectively aligned with the first welding sealing strip 230 and the second welding sealing strip;

[0043] like Figure 6 As shown, by arranging the base non-woven fabric 100 in a wavy shape, the first welding sealing strip 230 and the second welding sealing strip can be better fitted to the base non-woven fabric 100. Because when the multiple independent first sealed chambers 240 are evenly filled with activated carbon particles, the structure near the first welding sealing strip 230 is narrower, so the filling of activated carbon particles will be less. Therefore, in the actual production process, after the activated carbon particles are filled into the first sealed chamber 240, the first sealed chamber 240 will present an elliptical shape with a high middle and low ends. In order to make the base non-woven fabric 100 better fit with the first containing strip 210 after filling, the base non-woven fabric 100 is processed in a wavy shape.

[0044] In the embodiment of the utility model, a photocatalyst layer 800 is provided on the front end surface of the second gauze mesh layer 700;

[0045] The catalytic degradation performance of the photocatalyst layer 800 is enhanced, which can promote the decomposition reaction of formaldehyde and other toxic gases in the air. In this way, these toxic molecules will form non-toxic substances with shorter molecular chains after decomposition, thereby achieving air purification. During use, one side of the non-woven fabric of the utility model (the first gauze mesh layer 600) is light-proof, and the other side (the second gauze mesh layer 700) is light-facing, so the photocatalyst layer 800 is arranged on the front end surface of the second gauze mesh layer 700 to make the use of the photocatalyst better.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A multi-layered air filtration nonwoven fabric, characterized in that: The invention comprises a base non-woven fabric (100), wherein the front end surface of the base non-woven fabric (100) is provided with a first activated carbon layer (200), the rear end surface of the base non-woven fabric (100) is provided with a second activated carbon layer (300), the front end surface of the first activated carbon layer (200) is provided with a first nanofiber layer (400), the rear end surface of the second activated carbon layer (300) is provided with a second nanofiber layer (500), the front end surface of the first nanofiber layer (400) is provided with a first gauze mesh layer (600), and the rear end surface of the second nanofiber layer (500) is provided with a second gauze mesh layer (700); The first activated carbon layer (200) comprises a plurality of first accommodating strips (210) arranged in parallel, a first accommodating chamber (220) being provided in the first accommodating strip (210), activated carbon particles being contained in the first accommodating chamber (220), a plurality of first welding sealing strips (230) being evenly provided along the length direction of the first accommodating strip (210), the first welding sealing strips (230) dividing the first accommodating chamber (220) into a plurality of independent first sealed chambers (240); The second activated carbon layer (300) comprises a plurality of second accommodating bars arranged in parallel, a second accommodating chamber being provided in the second accommodating bar, activated carbon particles being installed in the second accommodating chamber, a plurality of second welding sealing strips being evenly provided along the length direction of the second accommodating bar, the second welding sealing strips dividing the second accommodating chamber into a plurality of independent second sealed chambers; The first accommodating strip (210) and the second accommodating strip are respectively welded and fixed to the base non-woven fabric (100) via a first welding sealing strip (230) and a second welding sealing strip.

2. The multi-layered air filtration nonwoven fabric according to claim 1, characterized in that: The first accommodating strip (210) and the second accommodating strip are arranged in a staggered manner in the length direction.

3. The multi-layered air filtration nonwoven fabric according to claim 2, characterized in that: Reinforcement rib lines (260) are respectively provided along the length direction of the first accommodating strip (210) and the second accommodating strip, and a plurality of reinforcement rib lines (260) are arranged in parallel along the width direction.

4. The multi-layered air filtration nonwoven fabric according to claim 3, characterized in that: A connection layer (270) extends inside the first accommodating strip (210) and on the side of the second accommodating strip, respectively, and adjacent first accommodating strips (210) are connected and reinforced via the connection layer (270).

5. The multi-layered air filtration nonwoven fabric according to claim 4, characterized in that: The base non-woven fabric (100) is arranged in a wave shape, and the wave crests and wave troughs of the base non-woven fabric (100) are aligned with the first welding sealing strip (230) and the second welding sealing strip, respectively.

6. The multi-layered air filtration nonwoven fabric according to claim 5, characterized in that: A photocatalyst layer (800) is provided on the front end surface of the second gauze mesh layer (700).

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