An impermeable antibacterial nonwoven fabric composite film

Abstract

The utility model discloses an anti -seepage antibacterial non -woven fabric composite membrane relates to composite membrane technical field, including bactericidal layer and reinforcing layer, is equipped with the isolation layer between bactericidal layer and reinforcing layer, bactericidal layer, reinforcing layer and isolation layer constitute composite membrane in order, the reinforcing layer is constituted by two outer structural layer and one structure layer between both, the structure layer is the mesh structure with honeycomb openwork, the outer structural layer of reinforcing layer and the structure layer in the middle are fixedly connected through the mode of bonding or hot melting, the isolation layer is composed of waterproof material, is used for with bactericidal layer and reinforcing layer mutual isolation. This anti -seepage antibacterial non -woven fabric composite membrane, and the composite structure of double outer structural layer sandwiching honeycomb openwork mesh structure layer is used to reinforcing layer, and is fixedly connected through the mode of bonding or hot melting, has improved the overall structural strength and interlayer combination firmness of composite membrane, effectively avoids the separation between layers.

Description

Technical Field

[0001] This utility model relates to the field of composite membrane technology, specifically to a leak-proof and antibacterial nonwoven composite membrane. Background Technology

[0002] Nonwoven composite membrane is a material that combines nonwoven fabric with film or other functional layers through a certain process.

[0003] For example, Chinese patent CN214395795U discloses a leak-proof and antibacterial nonwoven composite membrane, which relates to the field of composite membrane technology. The key points of its technical solution are: it includes a breathable membrane layer and a nonwoven fabric layer disposed on one side of the breathable membrane layer. The nonwoven fabric layer includes a nonwoven fabric main layer in the middle of the breathable membrane layer and nonwoven fabric auxiliary layers on both sides. The nonwoven fabric main layer and the nonwoven fabric auxiliary layers are bonded to the breathable membrane layer with hot melt adhesive. A waterproof and breathable strip is covered in the gap between the nonwoven fabric main layer and the nonwoven fabric auxiliary layers, which has good breathability and waterproof effect, as well as good antibacterial, comfort and health properties.

[0004] Existing composite membrane structures are not strong enough, the layers are prone to separation, the bactericidal layer and the reinforcing layer are prone to interpenetration, the liquid inside the composite membrane is prone to accumulate, the risk of leakage is high, and it is difficult to effectively inhibit microorganisms in the liquid. Utility Model Content

[0005] The purpose of this invention is to provide a leak-proof and antibacterial nonwoven composite membrane to solve the problems of insufficient structural strength, easy separation between layers, and easy interpenetration of substances between the bactericidal layer and the reinforcing layer in the existing composite membranes mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a leak-proof and antibacterial nonwoven composite membrane, comprising a bactericidal layer and a reinforcing layer, wherein an isolation layer is provided between the bactericidal layer and the reinforcing layer, and the bactericidal layer, the reinforcing layer and the isolation layer are sequentially stacked to form a composite membrane; The reinforcing layer consists of two outer structural layers and a structural layer located between them, wherein the structural layer is a mesh structure with honeycomb-like perforations.

[0007] Preferably, the two outer structural layers of the reinforcing layer are fixedly connected to the middle structural layer by bonding or hot-melt.

[0008] Preferably, the isolation layer is made of a waterproof material and is used to isolate the sterilization layer and the reinforcement layer from each other.

[0009] Preferably, the sterilization layer is composed of an inner structural layer and a water-absorbing layer, the water-absorbing layer is tightly connected to the isolation layer, and the inner structural layer is located inside the composite membrane.

[0010] Preferably, the absorbent layer is made of superabsorbent resin or superabsorbent fiber.

[0011] Preferably, the absorbent layer contains a water-soluble bactericidal substance that is uniformly distributed inside, and the water-soluble bactericidal substance is selected from chlorhexidine, quaternary ammonium salt compounds, silver ions, or combinations thereof.

[0012] Preferably, the inner structural layer is a spunbond nonwoven fabric or a meltblown nonwoven fabric, and the inner structural layer is provided with uniformly distributed through holes, which connect the inner side of the composite membrane to the absorbent layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This type of leak-proof and antibacterial nonwoven composite membrane features a reinforced layer with a double outer structural layer sandwiched with a honeycomb perforated mesh structure layer. The layers are fixed together by bonding or hot-melt methods, which improves the overall structural strength and interlayer bonding stability of the composite membrane and effectively prevents interlayer separation.

[0014] The perforations in the inner structural layer of the sterilization layer can guide liquid to quickly enter the absorbent layer. The highly absorbent material of the absorbent layer can quickly absorb the liquid to reduce accumulation and reduce the risk of leakage. In addition, the water-soluble bactericidal substances evenly distributed in the absorbent layer will dissolve with the liquid and exert antibacterial effects inside the absorbent layer and in the contact area of ​​the perforations, achieving a synergistic effect of preventing leakage and antibacterial properties. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged schematic diagram of point A in the middle; Figure 3 This is a schematic diagram of the exploded structure of this utility model; Figure 4 This is a schematic diagram of the outer structural layer of this utility model; Figure 5 This is a schematic diagram of the reinforcing layer structure of this utility model; Figure 6 This is a schematic diagram of the internal structural layer of this utility model.

[0016] In the diagram: 1. Sterilization layer; 101. Inner structural layer; 102. Water-absorbing layer; 103. Through-hole; 2. Reinforcing layer; 201. Outer structural layer; 202. Structural layer; 3. Isolation layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1 to 6 The present invention provides the following technical solution: A leak-proof and antibacterial nonwoven composite membrane includes a bactericidal layer 1 and a reinforcing layer 2, with an isolation layer 3 between the bactericidal layer 1 and the reinforcing layer 2. The bactericidal layer 1, the reinforcing layer 2, and the isolation layer 3 are stacked sequentially to form a composite membrane. The reinforcing layer 2 consists of two outer structural layers 201 and a structural layer 202 located between them. The structural layer 202 has a mesh structure with honeycomb-like perforations. The two outer structural layers 201 of the reinforcing layer 2 are fixedly connected to the middle structural layer 202 by bonding or heat fusion.

[0019] The isolation layer 3 is made of waterproof material and is used to isolate the sterilization layer 1 and the reinforcement layer 2 from each other; the sterilization layer 1 is composed of an inner structural layer 101 and a water-absorbing layer 102, the water-absorbing layer 102 is tightly connected to the isolation layer 3, and the inner structural layer 101 is located on the inner side of the composite membrane.

[0020] The absorbent layer 102 is made of superabsorbent resin or superabsorbent fiber; water-soluble bactericidal substances are uniformly distributed inside the absorbent layer 102, and the water-soluble bactericidal substances are selected from chlorhexidine, quaternary ammonium salt compounds, silver ions or combinations thereof.

[0021] The inner structural layer 101 is made of spunbond nonwoven fabric or meltblown nonwoven fabric. The inner structural layer 101 is provided with uniformly distributed through holes 103, which connect the inner side of the composite membrane to the absorbent layer 102.

[0022] The composite film is composed of a sterilization layer 1, an isolation layer 3, and a reinforcing layer 2 stacked sequentially. When the composite film is used for packaging or covering, its inner side may come into contact with liquid. The liquid first permeates into the absorbent layer 102 of the sterilization layer 1 through the uniformly distributed through-holes 103 on the inner structural layer 101. The inner structural layer 101 is made of spunbond nonwoven fabric or meltblown nonwoven fabric, and its through-hole design 103 allows liquid to pass through quickly, reducing liquid accumulation on the surface.

[0023] The absorbent layer 102 is made of superabsorbent resin or superabsorbent fiber, possessing high water absorption performance. When liquid enters the absorbent layer 102, it quickly absorbs and locks in the liquid, thereby reducing the risk of liquid leakage to the outside of the composite membrane. Simultaneously, the water-soluble bactericidal substances uniformly distributed within the absorbent layer 102 gradually dissolve as the liquid is absorbed. The dissolved bactericidal substances diffuse within the absorbent layer 102 and interact with the liquid-contacting areas through the pores 103, inhibiting or killing any microorganisms that may be present in the liquid, thus achieving antibacterial function.

[0024] The isolation layer 3 is located between the sterilization layer 1 and the reinforcement layer 2. It is made of waterproof material. During the process of liquid being absorbed by the absorbent layer 102, the isolation layer 3 acts as a barrier to prevent the liquid from further penetrating into the reinforcement layer 2. This isolation mechanism can prevent the absorbent or sterilizing substances in the sterilization layer 1 from affecting the structural stability of the reinforcement layer 2. At the same time, it can prevent impurities that may exist in the reinforcement layer 2 from entering the sterilization layer 1 in reverse, thus ensuring the independence and effectiveness of the functions of each layer.

[0025] The reinforcing layer 2, serving as the core structural support of the composite membrane, consists of two outer structural layers 201 and an intermediate structural layer 202. The structural layer 202 is a mesh structure with honeycomb-like perforations. The reinforcing layer 2 is fixedly connected by bonding or hot-melt methods, providing overall mechanical strength. The honeycomb perforation design maintains structural stability while enhancing the composite membrane's resistance. When the composite membrane is subjected to external pressure, the reinforcing layer 2 disperses stress, prevents interlayer separation, and ensures the integrity of the composite membrane during use.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leak-proof antibacterial nonwoven composite membrane, comprising a bactericidal layer (1) and a reinforcing layer (2), wherein an isolation layer (3) is provided between the bactericidal layer (1) and the reinforcing layer (2), and the bactericidal layer (1), the reinforcing layer (2) and the isolation layer (3) are sequentially stacked to form a composite membrane; characterized in that The reinforcing layer (2) consists of two outer structural layers (201) and a structural layer (202) located between them. The structural layer (202) is a mesh structure with honeycomb-like perforations.

2. The leakage-resistant antibacterial nonwoven composite film according to claim 1, characterized in that: The two outer structural layers (201) of the reinforcement layer (2) are fixedly connected to the middle structural layer (202) by bonding or hot melting.

3. The leakage-resistant, antimicrobial nonwoven composite film of claim 1, wherein: The isolation layer (3) is made of waterproof material and is used to isolate the bactericidal layer (1) and the reinforcing layer (2) from each other.

4. The antimicrobial, leak-resistant nonwoven composite film of claim 3, wherein: The sterilization layer (1) is composed of an inner structural layer (101) and a water-absorbing layer (102). The water-absorbing layer (102) is closely connected to the isolation layer (3). The inner structural layer (101) is located inside the composite membrane.

5. The antimicrobial, leak-resistant nonwoven composite film of claim 4, wherein: The absorbent layer (102) is made of superabsorbent resin or superabsorbent fiber.

6. The antimicrobial, leak-resistant nonwoven composite film of claim 5, wherein: The absorbent layer (102) contains a water-soluble bactericidal substance that is uniformly distributed inside. The water-soluble bactericidal substance is selected from chlorhexidine, quaternary ammonium salt compounds, silver ions or combinations thereof.

7. The antimicrobial, leak-resistant nonwoven composite film of claim 4, wherein: The inner structural layer (101) is a spunbond nonwoven fabric or a meltblown nonwoven fabric. The inner structural layer (101) is provided with uniformly distributed through holes (103), which connect the inner side of the composite membrane to the absorbent layer (102).

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