A composite facing for dam barrier absorbent articles

Abstract

The utility model relates to the technical field of the accessory of absorbent article, disclose a kind of dam blocking's absorbent composite surface layer, including top layer structure and bottom layer structure, top layer structure is opened at least one open area, top layer structure and bottom layer structure are basically composite by the form of relief embossing, and the inside limit of both composite parts stops in the position at least 4mm from the edge of open area, forming a circle dam blocking edge around open area, cavity is formed between top layer and bottom layer by relief embossing.The utility model scheme is relatively simple, can better eliminate the negative influence of body activity to surface layer structure extrusion, bending, and has better anti-side leakage and penetration effect to thin excrement.

Description

Technical Field

[0001] This utility model relates to the technical field of accessories for absorbent products, specifically disclosing a dam-like composite surface layer product for absorbent products used to block loose excrement. Background Technology

[0002] Wearable absorbent materials typically need to consider the negative impact of human limb movement on their absorbency and leak-proof performance. Their soft texture makes them prone to deformation due to pressure from the body during wear. This can cause some absorbent material to protrude closer to the edges of the leg openings, increasing the risk of leakage, especially from highly fluid, loose excretions (stool, urine, blood), if the material doesn't immediately seep through the surface layer. Furthermore, the folded and deformed surface layer can reduce the space available for excrement to seep through due to localized material compression and stacking, further increasing the risk of side leakage. Therefore, necessary structural improvements are needed to address these user concerns.

[0003] Currently, some existing technologies have made substantial product structure optimizations to address the above situation, thereby improving the permeability of the absorbent surface layer structure to offset the decrease in permeability caused by material deformation. For example, a composite structure is adopted, making the surface layer a three-dimensional shape. Through the combination of the new skin layer, the hollow layer, and the flow guiding layer in the open area, when urine appears, it can quickly and directly flow into the bottom of the hollow support cavity, while there will be no urine at the top of the hollow support cavity, thus shortening the residence time of urine on the top surface of the composite surface layer.

[0004] However, in the aforementioned prior art, the open area of ​​the new skin layer is only for the purpose of facilitating the rapid contact and infiltration of excrement into the perforated layer. But when the composite surface layer is compressed, since the unopened area of ​​the new skin layer is almost at the same height as the open area, the perforated layer may exceed the height of the absorbent material near the edge of the open area on the leg and come close to it. At this time, if the infiltration speed of excrement decreases due to the compression of the perforated layer, there is actually a risk of side leakage. Therefore, the composite structure still needs to be optimized based on direct composite. Utility Model Content

[0005] In response to the problems mentioned in the background section, this utility model has made targeted improvements and achieved the desired technical effects by combining the following technical solutions, specifically through the following technical content: An absorbent composite surface layer for damming includes a top structure and a bottom structure. The top structure has at least one open area. The top structure and the bottom structure are essentially composited by embossing, and the inner boundary of the composite part ends at a position at least 2 mm away from the edge of the open area, i.e., the forming range of the embossing ends inward at this position, forming a dam-like barrier around the open area. This ensures that when the top structure and the bottom structure are bent or deformed by external force, the dam-like barrier can at least partially move away from the bottom structure. The embossing forms a cavity between the top and bottom layers.

[0006] As a preferred embodiment of this technical solution, the height of the retaining wall of the dam is 2~20mm.

[0007] As a preferred embodiment of this technical solution, the open area is an opening in the top layer structure, such that the dam edge is formed by the boundary between the edge of the open area and the inner forming range of the embossed texture; or, the open area is formed by the uniform composite of the top layer structure and the bottom layer structure, with the boundary of the uniform composite being the same as the edge of the open area, such that the dam edge is formed by the boundary between the edge of the open area and the inner forming range of the embossed texture, and the dam edge protrudes as a whole.

[0008] As a preferred embodiment of this technical solution, the open area is elongated along the length of the top layer structure, and the length of the open area does not exceed 2 / 3 of the length of the top layer structure.

[0009] Based on the previous preferred form, the distance between the root of the dam retaining edge on both sides of the width extension direction of the top layer structure and the two side edges of the top layer structure is not less than 10mm.

[0010] As a preferred embodiment of this technical solution, a reinforcing part is provided around the embossed pattern and between any two or more adjacent embossed patterns to enhance the composite strength of the top and bottom structures. The reinforcing part is dot-shaped or line-shaped.

[0011] Based on the previous preferred form, the raised embossing is distributed in columns along the length of the top layer, and the minimum spacing between any two adjacent columns of raised embossing is greater than the minimum spacing between adjacent raised embossing in the same column. The reinforcing part includes at least two types: inter-column reinforcing part and inter-row reinforcing part. In the plane normal direction of the top layer structure or the bottom layer structure, the projected area of ​​the inter-column reinforcing part is greater than the projected area of ​​the inter-row reinforcing part.

[0012] Based on the previous preferred form, the edge of the inter-row reinforcement is attached to the edge of the embossed pattern, and / or the edge of the inter-row reinforcement is far from the edge of the embossed pattern.

[0013] Based on the previous preferred form, any two adjacent columns of embossed patterns are staggered along the width extension direction of the top layer structure.

[0014] As a preferred embodiment of this technical solution, the height of the raised embossing is 1~5mm.

[0015] The beneficial effects of this utility model compared to existing technologies are mainly reflected in the following aspects: 1. The solution adopts a composite structure with at least two layers, which creates a space in the open area of ​​the composite surface layer that is easy to seep in and blocked by the dam on all sides by the combination of free-moving dam edges and embossed texture. This allows the dam edges to be at least partially away from the surface material when the user is in motion, forming a three-dimensional barrier effect between the dam edges and the bottom layer structure. 2. Furthermore, the raised embossing around the perimeter of the dam also serves to block and guide the flow of loose excrement. Moreover, by utilizing the tiny channels between any adjacent raised embossing and the internal space of the raised embossing itself, the flow and infiltration of loose excrement are promoted. 3. Overall, the solution of this utility model is relatively simple, and the processing cost and processing difficulty can be well controlled. The implementation effect of the technical content is good, and it has high production and application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the absorbent composite surface layer of this utility model.

[0017] Figure 2 This is a partially enlarged cross-sectional view of one embodiment of the absorbent composite surface layer of this utility model.

[0018] Figure 3 This is a partially enlarged cross-sectional view of another embodiment of the absorbent composite surface layer of this utility model.

[0019] Figure 4 This is a schematic diagram illustrating the embossed texture of the absorbent composite surface layer of the present invention, showing its flow-guiding effect.

[0020] Figure 5 This is a magnified schematic diagram of the embossed texture of the absorbent composite surface layer described in this utility model.

[0021] Among them: top structure-1; bottom structure-2; embossed pattern-3; open area-4; dam retaining edge-5; reinforcement-6; inter-row reinforcement-60; inter-row reinforcement-61; fluid discharge flow / permeation direction - arrow without label. Detailed Implementation

[0022] The embodiments of this utility model will be described below with reference to relevant examples and accompanying drawings: Combination Figures 1 to 5 As shown, an absorbent composite surface layer for damming includes a top structure 1 and a bottom structure 2. The top structure 1 has at least one open area 4. The top structure 1 and the bottom structure 2 are basically composited by embossing 3, and the inner boundary of the composite part ends at a position at least 2 mm away from the edge of the open area 4, that is, the forming range of embossing 3 ends inward here, forming a damming edge 5 around the open area 4. This ensures that when the top structure 1 and the bottom structure 2 are bent or deformed by external force, the damming edge 5 can at least partially move away from the bottom structure 2. The embossing 3 forms a cavity between the top structure 1 and the bottom structure 2.

[0023] Reference Figure 1 Generally speaking, the absorbent composite surface layer described in this technical solution is not a single-use structure, but needs to be combined with other parts of the wearable absorbent in a reasonable and orderly manner. The absorbent should have a polymer layer for absorbing fluid-like excretions, a water-repellent layer for preventing leakage, a side-blocking structure for preventing leakage to the sides, and necessary wearing fixation structures, etc. After the user wears the absorbent correctly, the composite absorbent surface layer of this technical solution will fit against the user's groin area, wherein the position of the open area 4 preferably covers the main excretory organs of the human body.

[0024] After the absorbent material is compressed or bent due to human activity, a barrier 5 exists between the top layer structure 1 and the bottom layer structure 2, ending at least 2 mm from the edge of the open area 4. Therefore, objectively, regardless of human movement, at least a portion of the barrier 5 will be compressed or bent away from the bottom layer structure 2, forming a three-dimensional barrier. Considering that the gap between the legs is likely to be minimized during human activity, and combined with... Figure 2 or Figure 3 As shown, the absorbent undergoes greater deformation in its width direction than in its length direction. This will make it very easy for the dam baffle 5 to separate in the width direction of the absorbent and form a three-dimensional barrier. Therefore, it will be more difficult for the thin fluid excrement to seep out from both sides of the absorbent in the width direction, that is, the seepage from the root of the thighs will be effectively controlled.

[0025] Furthermore, the aforementioned dam baffle 5 at both ends in the length direction of the absorbent material acts as a protective structure to prevent leakage of thin fluid excrement when the user is lying down or flat. Even though the dam baffle 5 is more difficult to deform and separate in the width direction, the objective physical disconnection will create a gap between the top layer structure 1 and the bottom layer structure 2 at the location of the dam baffle 5, thus suppressing leakage to a certain extent.

[0026] The outer area of ​​the retaining wall 5, which serves as the first layer of barrier, is where the top structure 1 and the bottom structure 2 are combined through several uniform and relatively dense raised embossing patterns 3. Compared to complete pressing, the raised embossing patterns 3 create several cavities, such as... Figure 2 , Figure 3 and Figure 4 As shown, the volume of this cavity is not particularly prominent compared to the thickness of the surface structure itself. Instead, it forms a small, densely packed protruding structure that is visible to the naked eye and tangible to the touch, but not strongly uneven. This structure is less sensitive to environmental disturbances. In other words, the compression, bending, and other deformations caused by human limb movements on the surface structure will not completely flatten most of the raised embossing 3, thus allowing the composite surface structure to have a large amount of space for liquid to pass through and diffuse. Reference Figure 4 As shown, after the liquid comes into contact with the surface of the embossed pattern 3, it will flow along the contour of the embossed pattern 3 towards the gaps between the lower embossed patterns 3, forming a funnel-like effect. After passing through the material of the top layer structure 1, the liquid diffuses radially, thus increasing the probability of contact with the underlying absorption layer structure and improving the absorption efficiency. When the liquid cannot be absorbed by the absorption layer in time, the cavity space allows the liquid to move within it to a certain extent without easily backflowing. The top layer structure 1, which has absorbed the liquid, can also form a liquid barrier around the dam edge 5 when it is completely absorbed. Under the interaction, the embossed pattern 3 is equivalent to a second structure formed on the outer ring of the dam edge 5 to prevent the liquid from spreading along the surface of the surface layer structure. The open area 4 of the composite surface layer creates a space that is easy to seep down and is blocked by the dam on all sides. When the user moves his / her limbs, the dam edge 5 can at least partially move away from the surface layer material when it is squeezed, forming a three-dimensional blocking effect between the dam edge 5 and the bottom layer structure 2.

[0027] Furthermore, the raised embossed patterns 3 around the perimeter of the dam 5 also serve to block and guide the flow of loose excrement. Moreover, by utilizing the tiny channels between any adjacent raised embossed patterns 3 and the internal space of the raised embossed patterns 3 themselves, the flow and infiltration of loose excrement are promoted. Therefore, from an overall perspective, the solution of this utility model is relatively simple, the processing cost and processing difficulty can be well controlled, the implementation effect of the technical content is good, and it has high production and application value.

[0028] As a technical supplement, a certain degree of embossing pattern can also be applied to the surface of the bottom structure 2 in the open area 4 to improve the tactile feel when the fabric comes into contact with human skin. Furthermore, the fabric materials of the top structure 1 and the bottom structure 2 can be the same or different. In particular, under different conditions, there can be a gradient difference in the hydrophilicity of the top structure 1 and the bottom structure, which promotes the rapid dilution and infiltration of fluid-like excrement, and timely adsorption by the water-absorbing particles of the core structure below.

[0029] In a preferred embodiment of this utility model, the height of the dam baffle 5 is 2~20mm. The dam baffle 5 should not be too high, nor should it be too low. If it is too high, the dam baffle 5 should not separate from the bottom structure 2 and form a three-dimensional barrier due to the bending or compression deformation of the absorbent caused by human limb movement, so that the leakage prevention ability will increase rather than decrease. If it is too low, the dam baffle 5 cannot play a good blocking effect. Under the conditions of the viscosity and other physical properties of the fluid thin excrement, the dam baffle 5 with a height of 2~20mm can play a better blocking effect, ensuring that at least 90%~98% of the fluid thin excrement will not cross the dam baffle 5 and further spread along the surface of the top structure 1.

[0030] Reference Figure 2 and Figure 3 As shown, in a preferred embodiment of this technical solution, the open area 4 is an opening in the top layer structure 1, such that the dam edge 5 is formed by the boundary between the edge of the open area 4 and the inner forming range of the embossed pattern 3, as shown. Figure 2 Example form; Alternatively, the open area 4 is formed by uniformly combining the top layer structure 1 and the bottom layer structure 2, with the boundary of the uniform combination being the edge of the open area 4. The dam edge 5 is formed by the boundary between the edge of the open area 4 and the inner forming range of the embossed texture 3, and the dam edge 5 protrudes entirely. Figure 3 Example form; furthermore, the protruding height of the dam retaining edge 5 is higher than the height of the embossed pattern 3.

[0031] The two implementation methods described above demonstrate the flexibility and adjustability of this technical solution. The open area 4 is not a traditional top structure 1 that is directly hollowed out. It can also be a flat-pressed composite forming that is flatter than the embossed area 3 or the dam edge area 5. The dam edge 5 formed by the former conforms to the generally understood "retaining wall" structure, while the dam edge 5 formed by the latter is equivalent to a bubble-like partition with an internal cavity. In terms of technical effect, it can be regarded as an enlargement of the embossed structure 3. In the former, the thin excrement will be directly conducted and seeped through the bottom structure 2, while in the latter, the material of the top structure 1 will also be combined with the material of the bottom structure 2. The difference between the two methods allows manufacturers to differentiate the performance of their products, giving them the potential for improvement to meet more different application scenarios.

[0032] In a preferred embodiment of this utility model, the open area 4 is elongated along the length of the top layer structure 1, and the length of the open area 4 does not exceed 2 / 3 of the length of the top layer structure 1. (Refer to...) Figure 1 As shown, considering that the ratio of the actual length direction width to the width direction width of the absorbent is usually 2:1 when it is worn, the length of the open area 4 within the above range can cover the excretion area of ​​most users, effectively controlling the amount of top layer structure 1 used and facilitating the reduction of material waste during production; on the basis of the previous preferred embodiment, the distance between the root of the dam baffle 5 on both sides of the width extension direction of the top layer structure 1 and the two side edges of the top layer structure 1 is not less than 10mm. Compared with the conventional setting, this scheme can maximize the number of raised embossing 3 on both sides of the width direction of the composite surface layer structure, ensuring that the composite surface layer can form an effective second blocking structure around the dam baffle 5 in the width direction, and also helping to increase the possibility of liquid diffusion towards the length direction of the absorbent.

[0033] Reference Figures 1 to 5 As shown, in a preferred embodiment of this utility model, a reinforcing part 6 is provided around the raised embossing 3, and between any two or more adjacent raised embossings 3, to enhance the composite strength of the top layer structure 1 and the bottom layer structure 2. The reinforcing part 6 is dot-shaped or line-shaped. The reinforcing part 6 serves two purposes: firstly, it acts as a welding point for forming the composite of the top layer structure 1 and the bottom layer structure 2 in general manufacturing processes; secondly, the reinforcing part 6 also actually forms a smaller funnel structure in a microscopic local manner, such as... Figure 2 As shown, the reinforcing part 6 itself is lower than the surface of the top structure 1, and therefore can also serve as a temporary storage space for fluid-like excrement, forming a structure like... Figure 3The implementation effect of the flow state shown helps to ensure that the rapid flow and permeation performance of the composite surface layer structure is not significantly affected by the compression and bending caused by limb movements, thus ensuring that the comfort of the absorbent material does not change significantly when worn.

[0034] Reference Figure 1 and Figure 5 As shown, based on the previous preferred embodiment, the raised embossing 3 is distributed in columns along the length of the top layer. The minimum spacing between any two adjacent columns of raised embossing 3 is greater than the minimum spacing between adjacent raised embossing 3 in the same column. The reinforcing part 6 includes at least two types: inter-column reinforcing part 60 and inter-row reinforcing part 61. In the plane normal direction of the top layer structure 1 or the bottom layer structure 2, the projected area of ​​the inter-column reinforcing part 60 is greater than the projected area of ​​the inter-row reinforcing part 61. When different styles of reinforcing parts 6 are set, they can not only be used to create unique surface textures and tactile sensations for the product, which helps to improve the recognition among users, but also to improve the strength of the composite surface layer structure and promote the high integration between different layers of fabric in the composite surface layer structure, so that the liquid can maintain a uniform flow rate when passing through the composite structure.

[0035] Reference Figure 1 or Figure 5 As shown, based on the previous preferred embodiment, the edge of the inter-column reinforcement 60 is attached to the edge of the embossed pattern 3, and / or the edge of the row reinforcement 61 is far from the edge of the embossed pattern 3; any two adjacent columns of embossed patterns 3 are staggered along the width extension direction of the top layer structure 1. The embossed pattern 3 pattern of this technical solution is not limited to the illustration shown in this application. Other shapes or distribution patterns of embossed patterns 3 that can meet the requirements of industrial assembly line production, produce a certain visual aesthetic, and help form cavities are allowed. Correspondingly, different reinforcement shapes can be combined with embossed patterns 3 in different ways, which can also change the flexibility of the composite surface layer structure in a certain direction on its surface to a certain extent. In the example shown in this application, the product is more flexible in the width direction and more elastic in the length direction. Combined with the above-mentioned method, it can significantly promote the forming of the dam retaining edge 5.

[0036] As a preferred embodiment of this invention / utility model, the height of the raised embossing 3 is 1~5mm. Generally, the height of the raised embossing 3 should not exceed the height of the dam edge 5. The above-mentioned height of 1~5mm can effectively deal with the obstruction of the end of excrement in common environments. In special cases, it is also permissible for the two to be flush or for the raised embossing 3 to be higher. At this time, the function of the dam edge 5 will be relatively weakened, and the resistance to interference from human body compression deformation will also be reduced, which will reduce production costs to a certain extent. At this time, the absorbent is suitable as a non-wearable product similar to a nursing pad, and is suitable for situations where the user's excretion volume is relatively low or the excrement viscosity is relatively high.

[0037] Compared to existing technologies, the composite surface structure involved in this technical solution effectively avoids the situation where the unopened area of ​​the top layer structure 1 is at approximately the same height as the open area, i.e., exhibiting the same undulating pattern. Even if the structure itself is compressed, it avoids the situation in existing technologies where the perforated layer exceeds the height of the absorbent material near the edge of the open area on the legs and adheres to it. As a result, excrement is less likely to experience the situation in existing solutions where the perforated layer is compressed, the number of cavities decreases, and the liquid diversion space shrinks, leading to a slower seepage rate. The risk of side leakage during use of the absorbent material is also significantly reduced.

[0038] Clearly, the solution presented in this utility model is simple and requires very low production conditions for ordinary manufacturers. Therefore, processing costs can be effectively controlled during mass production, and the reduced processing difficulty will indirectly improve production efficiency. Comparative analysis with actual conditions shows that the implementation effect of this technical solution is predictably good. Given the continuously growing demand for advanced technology in the current consumer market, this technical solution also possesses high production and application value.

[0039] Furthermore, the composite surface layer of the absorbent material designed in this technical solution also has significant advantages in terms of environmental protection and sustainability: due to the effective control of processing costs and difficulties, resource waste and energy consumption during the production process will be greatly reduced, which is in line with the pursuit of green and environmentally friendly modern industrial production; at the same time, the application of this composite surface layer structure can significantly improve the leak-proof performance of the absorbent material, reduce the replacement frequency caused by side leakage or front and rear leakage, thereby reducing the generation of waste to a certain extent, which is of positive significance for environmental protection; furthermore, the flexibility in material selection mentioned in this technical solution also makes it possible to use recyclable or biodegradable materials, further promoting the sustainable development of the absorbent material industry.

[0040] 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. An absorbent composite surface layer for damming and blocking, comprising a top structure (1) and a bottom structure (2), wherein the top structure (1) has at least one open area (4), characterized in that: The top structure (1) and the bottom structure (2) are basically combined in the form of embossed pattern (3), and the inner boundary of the combined part ends at a position at least 2 mm away from the edge of the open area (4), that is, the forming range of the embossed pattern (3) ends here, forming a dam edge (5) around the open area (4), so that when the top structure (1) and the bottom structure (2) are bent or squeezed by external force, the dam edge (5) can at least partially move away from the bottom structure (2), and the embossed pattern (3) forms a cavity between the top structure (1) and the bottom structure (2).

2. The absorbent composite surface layer for damming and blocking according to claim 1, characterized in that: The height of the retaining edge (5) of the dam is 2~20mm.

3. The absorbent composite surface layer for damming and blocking according to claim 1 or 2, characterized in that: The open area (4) is an opening in the top layer structure (1), such that the dam edge (5) is formed by the boundary between the edge of the open area (4) and the inner forming range of the raised embossing (3); or, the open area (4) is formed by the uniform composite of the top layer structure (1) and the bottom layer structure (2), the boundary of the uniform composite is the same as the edge of the open area (4), such that the dam edge (5) is formed by the boundary between the edge of the open area (4) and the inner forming range of the raised embossing (3), and the dam edge (5) protrudes as a whole.

4. The absorbent composite surface layer for damming and blocking according to claim 1, characterized in that: The shape of the open area (4) is a long strip extending along the length of the top structure (1), and the length of the open area (4) does not exceed 2 / 3 of the length of the top structure (1).

5. The absorbent composite surface layer for damming and blocking according to claim 1 or 4, characterized in that: The distance between the root of the retaining wall (5) on both sides of the width extension direction of the top layer structure (1) and the two side edges of the top layer structure (1) shall not be less than 10 mm.

6. The absorbent composite surface layer for damming and blocking according to claim 1, characterized in that: A reinforcing part (6) is provided around the embossed pattern (3) and between any two or more adjacent embossed patterns (3) to enhance the composite strength of the top layer structure (1) and the bottom layer structure (2). The reinforcing part (6) is dot-shaped or line-shaped.

7. The absorbent composite surface layer for damming and blocking according to claim 6, characterized in that: The raised embossing (3) is arranged in columns along the length of the top layer structure (1). The minimum spacing between any two adjacent columns of raised embossing (3) is greater than the minimum spacing between adjacent raised embossing (3) in the same column. The reinforcing part (6) includes at least two types: inter-column reinforcing part (60) and inter-row reinforcing part (61). In the plane normal direction of the top layer structure (1) or the bottom layer structure (2), the projected area of ​​the inter-column reinforcing part (60) is greater than the projected area of ​​the inter-row reinforcing part (61).

8. The absorbent composite surface layer for damming and blocking according to claim 7, characterized in that: The edge of the inter-row reinforcement (6) is attached to the edge of the raised embossing (3), and / or the edge of the inter-row reinforcement (6) is far from the edge of the raised embossing (3).

9. The absorbent composite surface layer for damming and blocking according to claim 7, characterized in that: Any two adjacent columns of embossed patterns (3) are staggered from each other along the width extension direction of the top layer structure (1).

10. The absorbent composite surface layer for damming and blocking according to claim 1, characterized in that: The height of the raised embossing (3) is 1~5mm.

Images