A composite core absorbent article having a release backing

Abstract

The utility model relates to a kind of composite core body absorbing article of release bottom layer, including surface layer, composite core body and bottom film layer, the side close to human body is equipped with several convex points and several recesses, composite core body includes first flow guide layer, first core body, second flow guide layer and second core body, first flow guide layer includes first flow guide area, second flow guide area, third flow guide area and fourth flow guide area, second flow guide layer includes fifth flow guide area and sixth flow guide area, bottom film layer includes bottom film and release bottom layer.The utility model uses composite core body as the middle layer of absorbing article, increase absorption volume, improve the water absorption and flow efficiency of absorbing article, while surface layer is equipped with several convex points and several recesses, reduce the contact area of surface layer and human skin, solve absorbing article easy to adhere to skin, cause moisture and hot gas not easy to release and other problems.

Description

Technical Field

[0001] This utility model relates to the field of hygiene products, specifically to a composite core absorbent product with a release bottom layer. Background Technology

[0002] With economic development and social progress, sanitary absorbent products such as sanitary napkins, panty liners, and diapers have become essential daily necessities. The design of absorbent products is becoming increasingly diverse, enhancing comfort at different levels. Most absorbent products on the market consist of a top layer, a distribution layer, an absorbent core layer, and a bottom layer. Some traditional absorbent products have simple designs for their distribution and core layers, making them prone to side leakage and causing discomfort. Furthermore, the top layer is in direct contact with the skin, and some traditional absorbent products have a large, seamless contact area, causing them to adhere closely to the skin after absorbing liquid, hindering moisture and heat dissipation and further increasing discomfort. This can also lead to leaks and eczema.

[0003] For example, an absorbent article (Publication No.: CN218247585U, Publication Date: 2023-01-10) includes an absorbent core having an absorbent portion and a leak-proof portion. Along the thickness direction of the absorbent article, the leak-proof portion protrudes relative to the absorbent portion and at least surrounds a portion of the absorbent portion. A skin-friendly layer is attached to the upper surface of the absorbent core, and a skin-friendly layer is disposed on the lower surface of the absorbent core.

[0004] In the thickness direction, the absorbent part and the leak-proof part cooperate to form a stepped structure with a height difference that can block liquid side leakage. This can effectively reduce the problem of side leakage that easily occurs during the use of the absorbent product. However, the design of the diversion layer and the absorbent core layer is simple, and the surface layer has a large contact area with human skin without gaps. This causes the surface layer to easily stick to the skin after absorbing liquid, making it difficult for moisture and heat to dissipate. The above technology does not provide a solution to this problem, so it needs to be improved. Utility Model Content

[0005] To address the technical deficiencies in the background art, this utility model proposes a composite core absorbent product with a release bottom layer, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0006] A composite core absorbent product with a release bottom layer includes a surface layer, a composite core, and a bottom film layer. The surface layer, composite core, and bottom film layer are arranged sequentially from top to bottom. The side of the surface layer that is in close contact with the human body has a number of protrusions and a number of grooves. Each groove is located between two adjacent protrusions. The surface layer is made of skin-friendly non-woven fabric.

[0007] The composite core includes a first flow guiding layer, a first core, a second flow guiding layer, and a second core, arranged sequentially from top to bottom. The first and second flow guiding layers are the same size, and their areas are smaller than the surface layer area. The first and second cores are the same size as the surface layer. The first and second cores are made of highly absorbent water resin material.

[0008] The first flow guiding layer includes a first flow guiding region, a second flow guiding region, a third flow guiding region, and a fourth flow guiding region. The second and third flow guiding regions are located between the first and fourth flow guiding regions. Each of the second and third flow guiding regions has a plurality of first channels. The top ends of the plurality of first channels in the second and third flow guiding regions are close to each other, while the bottom ends are far apart. Each of the first and fourth flow guiding regions has a plurality of second channels, which are arranged vertically.

[0009] The second flow guiding layer includes a fifth flow guiding region and a sixth flow guiding region. Each of the fifth and sixth flow guiding regions has a plurality of third channels. The top ends of the plurality of third channels in the fifth flow guiding region and the plurality of third channels in the sixth flow guiding region are close to each other, while the bottom ends are far apart.

[0010] The bottom film layer includes a bottom film and a release bottom layer. The bottom film is disposed above the release bottom layer. The bottom film is a hydrophobic PE film. The bottom surface of the bottom film is provided with an adhesive surface. The bottom film has protective wings on the left and right sides. The lower surface of the protective wings is provided with an adhesive strip. The protective wings are made of water-repellent non-woven fabric.

[0011] Furthermore, the release base layer is made of release paper and includes a silicone oil layer, a coating layer and a release base layer. The silicone oil layer is disposed above the coating layer, and the coating layer is disposed above the release base layer. The silicone oil layer is composed of silicone oil and PE resin, and the coating layer is composed of PE resin.

[0012] Furthermore, an outer packaging is provided below the release base layer, and the release base layer and the outer packaging are bonded together.

[0013] Furthermore, the absorbent product can be a sanitary napkin, panty liner, diaper, etc.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes a first flow guiding layer, a first core, a second flow guiding layer, and a second core to form a composite core, thereby increasing the absorption volume, improving the absorption capacity and absorption speed of the absorbent product, and simultaneously achieving the effect of preventing side leakage.

[0016] This invention divides the first flow guiding layer into four regions, and designs the first channels of the two middle regions as inclined channels to quickly transfer the liquid in the middle region to the two adjacent regions, thereby relieving the pressure in the middle region. At the same time, the first and fourth flow guiding regions adopt vertical channels to reduce backflow and prevent leakage at both ends.

[0017] The surface layer of this invention has several protrusions and several grooves, which reduces the contact area between the surface layer and human skin, and solves the problem that absorbent products tend to stick to the skin, making it difficult for moisture and heat to dissipate. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of a composite core absorbent product with a release bottom layer.

[0019] Figure 2 This is a schematic diagram of the structure of a composite core absorbent product with a release bottom layer.

[0020] Figure 3 This is a cross-sectional view of a composite core absorbent product with a release bottom layer.

[0021] Figure 4 This is a structural diagram of the first flow guiding layer of a composite core absorbent product with a release bottom layer.

[0022] Figure 5 This is a structural diagram of the second flow guiding layer of a composite core absorbent product with a release bottom layer.

[0023] The components are: surface layer 1, composite core 2, bottom film layer 3, first flow guiding layer 4, first flow guiding area 401, second flow guiding area 402, third flow guiding area 403, fourth flow guiding area 404, first core 5, second flow guiding layer 6, fifth flow guiding area 601, sixth flow guiding area 602, second core 7, bottom film 8, release bottom layer 9, outer packaging 10, protective wings 11, first channel 12, first channel 12 of the second flow guiding area, first channel 12 of the third flow guiding area, second channel 13, third channel 14, third channel 14 of the fifth flow guiding area, and third channel 14 of the sixth flow guiding area. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-5 The embodiments of this utility model are described in conjunction with related examples. However, the embodiments of this utility model are not limited to those described below. Furthermore, this utility model relates to necessary components in this technical field and should be considered as well-known technology in this technical field, which can be known and mastered by those skilled in the art.

[0025] A composite core absorbent product with a release bottom layer, such as Figure 1As shown, it includes a surface layer 1, a composite core 2, and a bottom film layer 3, which are arranged sequentially from top to bottom. During the entire liquid absorption process, the liquid first contacts the surface layer 1 of the absorbent product, and the surface layer 1 transports the liquid downward to the composite core 2. At this time, the surface of the surface layer 1 has almost no liquid absorption. Then, the liquid is quickly absorbed in the composite core 2 and spreads rapidly along the front and back direction of the absorbent product. After the liquid is evenly distributed along the front and back direction, it continues to be transferred downward. The material in the composite core 2 quickly absorbs the liquid and expands to lock the liquid in.

[0026] The surface layer 1 has several evenly distributed protrusions and grooves on the side that is in close contact with the human body. Each groove is located between two adjacent protrusions. The design of the protrusions and grooves reduces the contact area between the surface layer 1 and the human skin, solving the problem that absorbent products tend to stick to the skin, causing moisture and heat to be difficult to dissipate. At the same time, the surface layer 1 is made of skin-friendly non-woven fabric, which allows liquid to penetrate quickly and improves user comfort.

[0027] like Figure 3 As shown, the composite core 2 comprises, from top to bottom, a first flow guiding layer 4, a first core 5, a second flow guiding layer 6, and a second core 7. The first flow guiding layer 4 and the second flow guiding layer 6 are the same size, and their areas are smaller than the area of ​​the surface layer 1. The two flow guiding layers can effectively promote liquid absorption and reduce backflow. The first core 5 and the second core 7 are the same size as the surface layer 1. The first core 5 and the second core 7 are made of highly absorbent water resin material, which can diffuse the liquid and generate expansion to lock in the liquid. Compared with traditional absorbent products, this utility model uses a composite core 2 to significantly increase the absorption volume and improve the absorption speed.

[0028] like Figure 4 As shown, the first flow guiding layer 4 includes a first flow guiding region 401, a second flow guiding region 402, a third flow guiding region 403, and a fourth flow guiding region 404. The first flow guiding region 401 and the fourth flow guiding region 404 are not adjacent. The second flow guiding region 402 and the third flow guiding region 403 are located between the first flow guiding region 401 and the fourth flow guiding region 404. The second flow guiding region 402 and the third flow guiding region 403 are respectively provided with a plurality of first channels 12. The top ends of the plurality of first channels 12 in the second flow guiding region 402 and the plurality of first channels 12 in the third flow guiding region 403 are close to each other, and the bottom ends are far apart from each other. The first flow guiding region 401 and the fourth flow guiding region 404 are respectively provided with a plurality of second channels 13. The plurality of second channels 13 are arranged vertically.

[0029] Compared to traditional absorbent products, this invention adopts a zoned design in the first guide layer 4, and the channels 12 of the two middle regions are designed as inclined channels, which quickly transfer the liquid in the middle region to the first guide region 401 and the fourth guide region 404, relieving the pressure in the middle region. At the same time, the first guide region 401 and the fourth guide region 404 adopt vertical channels 13 to reduce backflow and prevent leakage at both ends.

[0030] like Figure 5 As shown, the second guiding layer 6 includes a fifth guiding region 601 and a sixth guiding region 602. The fifth guiding region 601 and the sixth guiding region 602 each have a plurality of third channels 14. The top ends of the plurality of third channels 14 in the fifth guiding region 601 and the sixth guiding region 602 are close to each other, while their bottom ends are far apart. After the first guiding layer 4 guides the liquid and the first core 5 absorbs it, the remaining liquid will enter the second core 7 along with the second guiding layer 6. The inclined channels 14 in the fifth guiding region 601 and the sixth guiding region 602 of the second guiding layer 6 will further diffuse the liquid along the front-to-back direction onto the second core 7. Since most of the liquid has been absorbed by the first core 5, the second guiding layer 6 does not need to reserve second channels 13 like the first guiding layer 4. The remaining liquid entering the second core 7 will be firmly locked by the core, preventing front-to-back leakage.

[0031] The bottom film layer 3 includes a bottom film 8 and a release bottom layer 9. The bottom film 8 is disposed above the release bottom layer 9. The lower surface of the bottom film 8 is provided with an adhesive surface, which is a general adhesive. The bottom film 8 is a hydrophobic PE film. The bottom film 8 wraps the absorbent core material, prevents liquid leakage, and fixes the absorbent product. The release bottom layer 9 includes a silicone oil layer, a coating layer, and a release base layer. The silicone oil layer is disposed above the coating layer, and the coating layer is disposed above the release base layer. The silicone oil layer is composed of silicone oil and PE resin, and the coating layer is composed of PE resin. The release bottom layer 9 is used to separate the adhesive surface and the outer packaging 10. The release bottom layer 9 ensures the adhesiveness of the adhesive surface, while also being easily peeled off by the user.

[0032] The absorbent garment has protective wings 11 on both sides, located on the sides of the bottom film 8. Adhesive strips are provided on the lower surface of the wings 11. The wings 11 are made of water-repellent non-woven fabric and are typically adhered to the outside of clothing to secure the absorbent garment. Figure 2 As shown, an outer packaging 10 is provided below the release bottom layer 9. The release bottom layer 9 and the outer packaging 10 are connected by adhesive. The absorbent products can be sanitary napkins, panty liners, diapers, etc.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A composite core absorbent article having a release backing, characterized in that, It includes a surface layer (1), a composite core (2) and a bottom film layer (3), which are arranged from top to bottom. The surface layer (1) has several protrusions and several grooves on the side that is in close contact with the human body. The composite core (2) includes a first flow guide layer (4), a first core (5), a second flow guide layer (6) and a second core (7), which are arranged from top to bottom. The first flow guiding layer (4) includes a first flow guiding region (401), a second flow guiding region (402), a third flow guiding region (403) and a fourth flow guiding region (404). The second flow guiding region (402) and the third flow guiding region (403) are respectively provided with a plurality of first channels (12). The top ends of the plurality of first channels (12) in the second flow guiding region (402) and the plurality of first channels (12) in the third flow guiding region (403) are close to each other and the bottom ends are far apart from each other. The first flow guiding region (401) and the fourth flow guiding region (404) are respectively provided with a plurality of second channels (13). The plurality of second channels (13) are vertically arranged. The second flow guiding layer (6) includes a fifth flow guiding region (601) and a sixth flow guiding region (602). The fifth flow guiding region (601) and the sixth flow guiding region (602) are respectively provided with a plurality of third channels (14). The top ends of the plurality of third channels (14) in the fifth flow guiding region (601) and the plurality of third channels (14) in the sixth flow guiding region (602) are close to each other, and the bottom ends are far apart from each other.

2. The composite core absorbent article of claim 1, wherein, The second flow guiding region (402) and the third flow guiding region (403) are located between the first flow guiding region (401) and the fourth flow guiding region (404).

3. The composite core absorbent article of claim 1, wherein, The bottom film layer (3) includes a bottom film (8) and a release bottom layer (9).

4. The composite core absorbent article of claim 3, wherein, The bottom film (8) is disposed above the release bottom layer (9).

5. The composite core absorbent article of claim 3, wherein, The release base layer (9) is provided with an outer packaging (10) below it, and the release base layer (9) and the outer packaging (10) are bonded together.

6. The composite core absorbent article of claim 3, wherein, The bottom membrane (8) is provided with protective wings (11) on the left and right sides.

7. The composite core absorbent article of claim 3, wherein The release bottom layer (9) is made of release paper.

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