Air guide bottom film for sanitary napkin

Abstract

The utility model discloses an air guide bottom membrane for sanitary napkins, which comprises a first breathable membrane layer, a second breathable membrane layer and an air guide tube, the second breathable membrane layer is arranged below the first breathable membrane layer, and the second breathable membrane layer is of a wave-shaped structure so as to form grooves distributed at intervals on the top surface of the second breathable membrane layer. The air guide pipe is arranged in the groove, the top of the air guide pipe makes contact with the bottom face of the first breathable film layer, the bottom of the air guide pipe makes contact with the inner side face of the groove in the second breathable film layer, and air holes are formed in the air guide pipe at intervals. According to the air guide bottom film for the sanitary towel, stuffiness caused by complete attachment of clothes and the sanitary towel is avoided, the air guide pipe is used for supporting the groove, collapse is avoided, air flow in the groove is guided and diffused through the air holes in the air guide pipe, the problem that local ventilation is poor is avoided, and ventilation is ensured.

Description

Technical Field

[0001] The utility model relates to the field of sanitary napkins, in particular to a gas-permeable bottom film for sanitary napkins. Background Art

[0002] Sanitary napkins usually have good water absorption. In order to avoid leakage during use, the bottom film needs to have good waterproof effect. At the same time, the use environment of sanitary napkins is relatively enclosed. In order to improve the body feeling comfort, the bottom film also needs to have a certain gas permeability effect.

[0003] The utility model patent with the application number 2023207200569 discloses a cotton-soft embossed fully-covered sanitary napkin, and the bottom layer uses a waterproof and breathable membrane. In the actual use process, in order to avoid leakage problems, the air permeability of the waterproof and breathable membrane is relatively limited, and the bottom layer is attached to the clothes, further hindering the air permeability, so improvement is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a gas-permeable bottom film for sanitary napkins, which increases the gas conduction function and improves the air permeability.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A gas-permeable bottom film for sanitary napkins, comprising: a first breathable film layer, a second breathable film layer and a gas guide tube. The second breathable film layer is arranged below the first breathable film layer. The second breathable film layer is in a wavy structure to form grooves distributed at intervals on the top surface of the second breathable film layer. The gas guide tube is arranged in the grooves. The top of the gas guide tube is in contact with the bottom surface of the first breathable film layer, and the bottom of the gas guide tube is in contact with the inner side surface of the groove on the second breathable film layer. The gas guide tube is provided with air holes at intervals.

[0007] Wherein, the first breathable film layer and the second breathable film layer are respectively made of PE waterproof and breathable membranes.

[0008] Wherein, the grooves extend along the length direction of the second breathable film layer.

[0009] Wherein, the area where the first breathable film layer and the second breathable film layer are joined is compounded by a hot pressing method.

[0010] Wherein, the area where the first breathable film layer and the second breathable film layer are joined is fixed by a water-soluble adhesive strip.

[0011] Wherein, high molecular water-absorbing resin particles are arranged in the grooves.

[0012] Advantages of the present utility model: A gas-permeable bottom film for sanitary napkins. The second breathable film layer has a wavy structure, which can avoid sticking to clothes, thus alleviating the stuffy feeling caused by the complete adhesion of clothes and sanitary napkins. The air guide tube is used to support the groove to prevent collapse, and the air holes on the air guide tube are used to divert and diffuse the air flow in the groove, avoiding the problem of poor local air permeability and ensuring air permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is Figure 1 the schematic structural diagram of the air guide tube in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following Figures 1 to 2 is further described in conjunction with

[0016] such as Figure 1 the gas-permeable bottom film for sanitary napkins shown, including: a first breathable film layer 1, a second breathable film layer 2 and an air guide tube 4. The second breathable film layer 2 is arranged below the first breathable film layer 1. The second breathable film layer 2 has a wavy structure to form grooves 3 distributed at intervals on the top surface of the second breathable film layer 2. Through the wavy structure of the second breathable film layer 2, the adhesion between the sanitary napkin and the clothes can be avoided, thus alleviating the stuffy feeling caused by the complete adhesion of the clothes and the sanitary napkin.

[0017] In this embodiment, the first breathable film layer 1 and the second breathable film layer 2 are respectively made of PE waterproof and breathable films, which have certain waterproof and breathable effects. There are the following two ways to connect the first breathable film layer 1 and the second breathable film layer 2:

[0018] 1. The first one, the area where the first breathable film layer 1 and the second breathable film layer 2 are joined is compounded by hot pressing. The production efficiency is high, but a corresponding hot pressing mold needs to be customized, and the mold cost is high, which is suitable for mass production of the gas-permeable bottom film for sanitary napkins;

[0019] 2. The second one, the area where the first breathable film layer 1 and the second breathable film layer 2 are joined is fixed by a water-soluble adhesive strip 5. The construction is convenient, the structure is stable, and the water-soluble adhesive strip 5 can be dissolved after encountering water to realize the separation of the first breathable film layer 1 and the second breathable film layer 2.

[0020] The air guide tube 4 is arranged in the groove 3. The air guide tube 4 can be made of elastic plastic tube. The air guide tube 4 is used to support the groove 3 to avoid the problem of the collapse of the groove 3 and ensure the smooth flow of air in the groove 3. In this embodiment, the top of the air guide tube 4 is in contact with the bottom surface of the first breathable membrane layer 1, and the bottom of the air guide tube 4 is in contact with the inner side surface of the groove 3 on the second breathable membrane layer 2 to realize the support for the structure of the groove 3.

[0021] As Figure 2 shown, air holes 6 are arranged at intervals on the air guide tube 4. In this embodiment, the groove 3 extends along the length direction of the second breathable membrane layer 2. The air in the groove 3 is guided and diffused through the air holes on the groove 3 and the air guide tube 4 to avoid the problem of poor air permeability in a local area and ensure the overall air permeability.

[0022] In addition, high molecular water-absorbing resin particles 7 are arranged in the groove 3, which can absorb part of the water permeating downward from the first breathable membrane layer 1 to avoid the problem of continuous downward permeation and greatly improve the overall waterproof effect.

[0023] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An air-permeable bottom film for sanitary napkins, characterized in that, Comprising: A first breathable membrane layer, a second breathable membrane layer and an air duct. The second breathable membrane layer is disposed below the first breathable membrane layer. The second breathable membrane layer has a wavy structure to form grooves distributed at intervals on the top surface of the second breathable membrane layer. The air duct is disposed in the grooves. The top of the air duct is in contact with the bottom surface of the first breathable membrane layer, and the bottom of the air duct is in contact with the inner side surface of the grooves on the second breathable membrane layer. Air holes are spacedly arranged on the air duct.

2. The air-permeable bottom film for sanitary napkins according to claim 1, characterized in that, The first breathable membrane layer and the second breathable membrane layer are respectively made of a PE waterproof and breathable membrane.

3. The air-permeable bottom film for sanitary napkins according to claim 1, characterized in that, The grooves extend along the length direction of the second breathable membrane layer.

4. The air-permeable bottom film for sanitary napkins according to claim 1, characterized in that, The area where the first breathable membrane layer and the second breathable membrane layer are joined is compounded by a hot pressing method.

5. The air-permeable bottom film for sanitary napkins according to claim 1, wherein, The area where the first breathable membrane layer and the second breathable membrane layer are joined is fixed by a water-soluble adhesive strip.

6. The air-permeable bottom film for sanitary napkins according to claim 1, wherein High molecular water-absorbing resin particles are disposed in the grooves.

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