Environment-friendly composite bottom film

Abstract

The utility model discloses an environmental protection composite bottom membrane, it includes: bacteriostatic flow guiding layer, waterproof and breathable layer and environmental protection skin -friendly layer, bacteriostatic flow guiding layer sets up at waterproof and breathable layer's top surface, environmental protection skin -friendly layer sets up at waterproof and breathable layer's bottom surface, bacteriostatic flow guiding layer with waterproof and breathable layer between be provided with first breathable adhesive layer, waterproof and breathable layer and environmental protection skin -friendly layer between be provided with second breathable adhesive layer. The environmental protection composite bottom membrane of the utility model, bacteriostatic flow guiding layer as the structure of bottom membrane inside, with liquid such as menstrual blood or urine direct contact, can adopt polylactic acid non -woven fabric, both can carry out the diffusion of liquid on the plane, reduce waterproof and breathable layer's waterproof working pressure, also have the effect of bacteriostasis, still do not influence the air permeability of waterproof and breathable layer, environmental protection skin -friendly layer as the structure of bottom membrane outside, with human body leg skin contact, to human body no adverse stimulation, ensure the environmental protection of use.

Description

Technical Field

[0001] This utility model relates to the field of sanitary napkin bottom film, and in particular to an environmentally friendly composite bottom film. Background Technology

[0002] To prevent leakage of sanitary products such as sanitary napkins and diapers, in addition to using a core with better absorbency, a waterproof bottom membrane is also needed to prevent liquid leakage.

[0003] Waterproof diaper bottom films are mostly made of plastic film, which can cause the outer side of the diaper to stick to the skin during use, affecting its breathability. To avoid contact between the plastic film and the skin, a layer of non-woven fabric can be laminated to the outside of the plastic film. However, laminating the non-woven fabric to the plastic film requires adhesive, which can also affect the overall breathability and environmental friendliness. In addition, bottom films usually do not have antibacterial properties, affecting the safety of hygiene products and requiring improvement. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly composite bottom film that improves breathability and environmental friendliness while ensuring antibacterial effects.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An environmentally friendly composite bottom membrane includes: an antibacterial diversion layer, a waterproof and breathable layer, and an environmentally friendly skin-friendly layer. The antibacterial diversion layer is disposed on the top surface of the waterproof and breathable layer, and the environmentally friendly skin-friendly layer is disposed on the bottom surface of the waterproof and breathable layer. A first breathable adhesive layer is disposed between the antibacterial diversion layer and the waterproof and breathable layer, and a second breathable adhesive layer is disposed between the waterproof and breathable layer and the environmentally friendly skin-friendly layer.

[0007] The environmentally friendly and skin-friendly layer is made of pure cotton non-woven fabric.

[0008] The antibacterial and diffusing layer is made of polylactic acid nonwoven fabric.

[0009] The first breathable adhesive layer includes a plurality of arrayed first dot adhesives, and the second breathable adhesive layer includes a plurality of arrayed second dot adhesives.

[0010] The first and second dotted adhesives are misaligned on the projection of the environmentally friendly skin-friendly layer.

[0011] The first and second dotted adhesives are respectively water-soluble adhesives.

[0012] The waterproof and breathable layer is made of PE perforated membrane.

[0013] The beneficial effects of this utility model are as follows: An environmentally friendly composite bottom film with an antibacterial and diversion layer as the inner structure of the bottom film, which comes into direct contact with liquids such as menstrual blood or urine, can be made of polylactic acid nonwoven fabric. This layer can diffuse the liquid on a plane, reducing the waterproof working pressure of the waterproof and breathable layer, and also has an antibacterial effect without affecting the breathability of the waterproof and breathable layer. The environmentally friendly and skin-friendly layer as the outer structure of the bottom film comes into contact with the skin of the human leg, causing no adverse stimulation to the human body and providing good comfort. It is more environmentally friendly to use as the bottom film for sanitary products such as sanitary napkins and diapers. 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 magnified view of part A in the middle. Detailed Implementation

[0016] The following is combined with Figures 1 to 2 The technical solution of this utility model will be further illustrated through specific embodiments.

[0017] like Figure 1 The environmentally friendly composite bottom film shown includes: an antibacterial diversion layer 1, a waterproof and breathable layer 2, and an environmentally friendly skin-friendly layer 3. The antibacterial diversion layer 1 is disposed on the top surface of the waterproof and breathable layer 2. In this embodiment, the antibacterial diversion layer 1 is made of polylactic acid nonwoven fabric. Polylactic acid nonwoven fabric has strong adsorption, good breathability, and also has an antibacterial effect.

[0018] As the inner structure of the bottom membrane, the antibacterial diversion layer 1 is in direct contact with the liquids such as menstrual blood or urine absorbed by the absorbent core. Utilizing the properties of polylactic acid nonwoven fabric, it can both diffuse the liquid on the plane of the antibacterial diversion layer 1, reducing the waterproof working pressure of the waterproof and breathable layer 2, and also have an antibacterial effect, making it safer to use, without affecting the breathability of the waterproof and breathable layer 2.

[0019] In this embodiment, the waterproof and breathable layer 2 is made of PE perforated membrane. The microporous structure of the PE perforated membrane allows water vapor molecules to pass through, but does not easily allow liquid water to enter, thus ensuring a certain degree of breathability while being waterproof.

[0020] A first breathable adhesive layer 4 is provided between the antibacterial drainage layer 1 and the waterproof and breathable layer 2 to achieve the composite of the antibacterial drainage layer 1 and the waterproof and breathable layer 2. Figure 2 As shown, the first breathable adhesive layer 4 includes multiple arrayed first dot adhesives 41, which can ensure the composite of the antibacterial diversion layer 1 and the waterproof breathable layer 2 without affecting the breathability of the antibacterial diversion layer 1.

[0021] The environmentally friendly skin-friendly layer 3 is disposed on the bottom surface of the waterproof and breathable layer 2. In this embodiment, the environmentally friendly skin-friendly layer 3 is made of pure cotton non-woven fabric. As the outer structure of the bottom membrane, the environmentally friendly skin-friendly layer comes into contact with the skin of the human leg. Pure cotton non-woven fabric has no adverse irritation to the human body, provides good comfort, and is biodegradable, making it more environmentally friendly to use.

[0022] A second breathable adhesive layer 5 is disposed between the waterproof and breathable layer 2 and the environmentally friendly skin-friendly layer 3. In this embodiment, the second breathable adhesive layer 5 includes a plurality of arrayed second dot-shaped adhesives 42, such as... Figure 2 As shown, the waterproof and breathable layer 2 and the environmentally friendly skin-friendly layer 3 are composited by the second dot adhesive 42, resulting in a relatively stable structure that does not affect the breathability of the waterproof and breathable layer 2 and the environmentally friendly skin-friendly layer 3.

[0023] like Figure 2 As shown, the first dot adhesive 41 and the second dot adhesive 42 are misaligned on the projection of the environmentally friendly skin-friendly layer 3 to avoid overlap between the first dot adhesive 41 and the second dot adhesive 42 on the projection of the environmentally friendly skin-friendly layer 3, thus ensuring overall breathability.

[0024] In this embodiment, the first dot adhesive 41 and the second dot adhesive 42 are respectively water-soluble adhesives, such as starch adhesives and protein adhesives, which are easily degradable and more environmentally friendly. The first dot adhesive 41 gradually dissolves upon contact with liquid. Although this may reduce the stability of the composite structure of the antibacterial diversion layer 1 and the waterproof and breathable layer 2, in this application, the environmentally friendly composite bottom film is used as the bottom film in sanitary products such as sanitary napkins and diapers. The usage time is very short, and the edges of sanitary products such as sanitary napkins and diapers are sealed by heat pressing or ultrasonic welding processes, which will not cause the separation of the antibacterial diversion layer 1 and the waterproof and breathable layer 2 during use.

[0025] 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. An environmentally friendly composite base film, characterized in that, include: The system comprises an antibacterial diversion layer, a waterproof and breathable layer, and an environmentally friendly skin-friendly layer. The antibacterial diversion layer is disposed on the top surface of the waterproof and breathable layer, and the environmentally friendly skin-friendly layer is disposed on the bottom surface of the waterproof and breathable layer. A first breathable adhesive layer is disposed between the antibacterial diversion layer and the waterproof and breathable layer, and a second breathable adhesive layer is disposed between the waterproof and breathable layer and the environmentally friendly skin-friendly layer.

2. The environmentally friendly composite base film according to claim 1, characterized in that, The environmentally friendly, skin-friendly layer is made of pure cotton non-woven fabric.

3. The environmentally friendly composite base film according to claim 1, characterized in that, The antibacterial and fluid-guiding layer is made of polylactic acid nonwoven fabric.

4. The environmentally friendly composite base film according to claim 1, characterized in that, The first breathable adhesive layer includes a plurality of arrayed first dot adhesives, and the second breathable adhesive layer includes a plurality of arrayed second dot adhesives.

5. The environmentally friendly composite base film according to claim 4, characterized in that, The first and second dots of adhesive are misaligned on the projection of the environmentally friendly skin-friendly layer.

6. The environmentally friendly composite base film according to claim 4, characterized in that, The first and second dot adhesives are respectively made of water-soluble adhesives.

7. The environmentally friendly composite base film according to claim 1, characterized in that, The waterproof and breathable layer is made of PE perforated membrane.

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