Disposable absorption article
By setting a non-adhesive area and buffer space between the liquid-permeable top layer and the liquid-impermeable bottom layer to prevent leakage, the problem of leakage of disposable absorbent items is solved, the absorption speed and leakage prevention effect are improved, and the user experience and sense of security are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN HENGAN HLDG CO LTD
- Filing Date
- 2024-12-28
- Publication Date
- 2026-05-05
AI Technical Summary
Existing disposable absorbent products have leakage problems, especially when the user is lying on their side or in an improper posture, and the absorption speed is insufficient, resulting in a decrease in user experience and safety.
A leak-proof partition is set between the liquid-permeable top layer and the liquid-impermeable bottom layer, including a fixed part and a free part. By setting a non-adhesive area in the fixed part to form a buffer space, the liquid buffering capacity is increased, and the liquid is guided to the absorbent core through the hydrophilic top layer, thereby improving the absorption speed and leak-proof effect.
It effectively prevents liquid leakage when the user is lying on their side or making large movements, increases the liquid buffer space, improves the absorption speed and user experience, and enhances the product's leak-proof effect and safety.
Smart Images
Figure CN224193664U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a disposable absorbent article, and more particularly to a disposable absorbent article with improved leak-proof performance. Background Technology
[0002] Existing disposable absorbent materials suffer from various problems due to material limitations, with leakage being one of the most frequently reported issues. The main reasons for leakage include: 1. Inadequate fit due to unreasonable product structure, size, and proportions; 2. The use of pure polymer materials without wood pulp in the core to reduce overall thinness, which reduces the core's absorption rate or significantly decreases the absorption rate upon re-absorption, increasing the risk of leakage; 3. Other factors such as improper wear, prolonged lack of replacement, and the wearer's posture or high activity level. This design primarily aims to provide solutions to the problems of insufficient core absorption speed and leakage when the user is lying on their side or tilted, thereby reducing the risk of leakage and improving the user experience and sense of security. Summary of the Invention
[0003] This invention provides a disposable absorbent article, and more particularly relates to a disposable absorbent article that improves leak-proof performance, reduces the risk of leakage, and enhances the user experience and sense of security.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a disposable absorbent article comprising a liquid-permeable top layer, a liquid-impermeable bottom layer, and an absorbent core located between the liquid-permeable top layer and the liquid-impermeable bottom layer. The length direction of the absorbent article is defined as longitudinal, and the width direction as transverse. When in use, the side of the absorbent article closest to the skin is the skin side, and the side furthest from the skin is the non-skin side. A pair of symmetrically distributed, longitudinally extending leak-proof side panels are provided on both transverse sides of the skin side of the liquid-permeable top layer. Each leak-proof side panel includes a fixing portion and a free portion capable of standing upright. The fixing portion includes a transverse fixing area and a longitudinal fixing area, with the transverse fixing area extending along the entire longitudinal length of the absorbent article. Extending and located on the lateral outer edge of the free portion of the leak-proof partition, a pair of longitudinal fixing areas are respectively located at the longitudinal ends of the free portion of the leak-proof partition. The lateral fixing areas and the longitudinal fixing areas are seamlessly connected in the longitudinal end region of the absorbent article. The lateral fixing area of the present invention includes a first adhesive area and a first non-adhesive area. The first adhesive area is bonded to the leak-proof partition and the impermeable bottom layer, while the first non-adhesive area is not bonded to the leak-proof partition and the impermeable bottom layer. The lateral outer edge of the first non-adhesive area is located inside the lateral outer edge of the first adhesive area, and the longitudinal outer edge of the first non-adhesive area is located inside the longitudinal outer edge of the first adhesive area.
[0005] By setting a non-adhesive area in the area where the leak-proof partition is fixed, a space of a certain size is formed between the leak-proof partition and the impermeable bottom layer. When the amount of excrement discharged is large and cannot be absorbed quickly, it remains on the surface layer. The excrement can enter the space between the leak-proof partition and the impermeable bottom layer for buffering, providing a buffer time for the absorbent core to absorb the excrement. This achieves a gradual absorption effect with sufficient space, preventing large amounts of excrement from leaking out. At the same time, if the user is lying on their side, the non-adhesive area of the leak-proof partition provides a larger capacity compared to the case without a non-adhesive area, which can improve the leak-proof effect.
[0006] Furthermore, the liquid-permeable surface layer includes two lateral sides, which extend to the first non-adhesive area.
[0007] In a further improvement on the aforementioned technical solution, the side of the surface layer extends into the non-adhesive area. The surface layer is made of a hydrophilic material, and the excrement buffered in the non-adhesive area can be absorbed into the absorbent core more quickly through the guiding and absorption effect of the surface layer.
[0008] Furthermore, a second adhesive area is provided on the inner side of the inner edge of the first non-adhesive area in the lateral fixing area, and the leak-proof partition in the second adhesive area is connected to the surface layer on the non-skin side of the liquid-permeable surface layer.
[0009] Based on the aforementioned technical solution, an adhesive area is further set inside the non-adhesive area, so that the non-fixed buffer space of the fixed part is in a relatively independent state. The part of the excrement that is not absorbed by the core in time is introduced into the buffer space through the surface layer, and then reintroduced into the core from the buffer space through the surface layer. This can prevent the leakage of excrement caused by large fluctuations in the liquid stored in the buffer space when the user's movements are large.
[0010] Furthermore, the liquid-permeable top layer and the liquid-impermeable bottom layer in the second bonding area are interconnected. This design ensures the strong bond between the layers.
[0011] Furthermore, the liquid-permeable surface layer has a liquid-permeable surface layer fold-back portion in the first non-adhesive area that folds back towards the non-skin side.
[0012] Furthermore, the end of the liquid-permeable surface layer fold extends between the absorbent core and the impermeable bottom layer.
[0013] Based on the aforementioned technical solution, the side of the liquid-permeable surface layer is further made to have a folded section. The folded section realizes double-layer flow guidance, which accelerates the effect of liquid in the buffer space flowing into the core for absorption. The folded section is further extended to the non-skin side of the absorbent core, which can realize the absorption of excrement on multiple surfaces of the core, improve the liquid absorption speed, release the buffer space so that it can continue to play the buffer function, and further improve the leak-proof effect.
[0014] Furthermore, the actual lateral size of the leak-proof partition edge in the first non-adhesive area is greater than the lateral size of the impermeable bottom layer in the first non-adhesive area.
[0015] Based on the aforementioned technical solution, a further design is made to fold the leak-proof partition material during manufacturing or other feasible methods, so that the size of the leak-proof partition in the non-adhesive area (the fully unfolded lateral width) is greater than the width of the impermeable bottom layer, thereby increasing the buffer space and the amount of liquid that can be buffered, thus improving the leak-proof effect.
[0016] Furthermore, the longitudinal fixing area includes a third bonding area and a third non-bonding area. The longitudinal outer edge of the third non-bonding area is located inside the longitudinal outer edge of the third bonding area, and the transverse inner edge of the third non-bonding area is located outside the transverse inner edge of the third bonding area.
[0017] Based on the aforementioned technical solution, a second buffer space is further designed at the longitudinal fixed part on the outer side of the free part of the leak-proof partition through the third non-adhesive area, thereby increasing the buffer space and the amount of liquid that can be buffered, thus improving the leak-proof effect.
[0018] Furthermore, the third non-adhesive region overlaps with the absorbent core.
[0019] Based on the aforementioned technical solution, the design further overlaps the second cache space with the core area, ensuring that cache waste in the cache space is better absorbed back into the core, thereby improving the leak prevention effect. Attached Figure Description
[0020] Figure 1 This is a plan view of embodiment 1 of the present invention;
[0021] Figure 2 for Figure 1 Cross-sectional view of AA;
[0022] Figure 3 for Figure 1 Cross-sectional view of CC;
[0023] Figure 4 This is a plan view of embodiment 2 of the present invention;
[0024] Figure 5 for Figure 4 Cross-sectional view of AA;
[0025] Figure 6 for Figure 4 Cross-sectional view of BB;
[0026] Figure 7 for Figure 4 Cross-sectional view of CC;
[0027] Figure 8 This is a cross-sectional view of embodiment 3 AA of the present invention;
[0028] Figure 9 This is a cross-sectional view of embodiment 4 AA of the present invention. Detailed Implementation
[0029] The following will combine Figures 1 to 9 The present invention will be further described in detail with reference to specific embodiments.
[0030] Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 The dashed lines in the diagram are partly marked with "S" and partly without "S", but they still indicate the same fixed connection between the layers as those marked with "S".
[0031] Figure 1 , Figure 4 In the plan view of the implementation case, the "first non-adhesive area," "third non-adhesive area," and "third adhesive area" are represented by shaded areas. The shades are different for each area, and they can be identified by their corresponding numbers. In the diagram, TF represents the skin side, and NS represents the non-skin side. The non-skin side cannot be identified in the diagram, so it is used instead. NS The side refers to the non-skin side. NS It is the opposite direction of the skin side.
[0032] The present invention defines the length direction of the disposable absorbent article 1 as longitudinal LD, the width direction as transverse MD, the direction closer to the skin as skin side TF, and the direction farther from the skin as non-skin side NS. The disposable absorbent article has a central region, the transverse direction closer to the central region is the inner side, the transverse direction farther from the central region is the outer side, the longitudinal direction closer to the central region is the inner end, and the longitudinal direction farther from the central region is the outer end.
[0033] The disposable absorbent article 1 of the present invention includes a liquid-permeable surface layer 11, a liquid-impermeable bottom layer 13, and an absorbent core 12 located between the liquid-permeable surface layer 11 and the liquid-impermeable bottom layer 13. A leak-proof partition 14 is provided on the skin side of the liquid-permeable surface layer and extends longitudinally. The leak-proof partition 14 is distributed on both sides of the main body and includes a fixed part 14F and a free part 14S that can stand up. A longitudinally extending elastic element is provided on the inner side of the free part 14S.
[0034] For better description, the fixing part 14F will be divided into several parts for explanation. The fixing part 14F includes a transverse fixing area 14FC and a longitudinal fixing area 14FL. The transverse fixing area 14FC extends along the longitudinal length of the absorbent article, and its longitudinal length is the same as that of the absorbent article. The longitudinal fixing area 14FL is located at the end of the absorbent article 1 and inside the transverse fixing area 14FC, and is continuously and seamlessly connected to the transverse fixing area 14FC. The longitudinal fixing area 14FL is also located at the outer end of the longitudinal end of the free part 14S and is adjacent to the free part 14S.
[0035] Figures 1-3 In the first embodiment of the present invention, the leak-proof partition 14 includes a first adhesive area 14FC1 bonded to each other with the impermeable bottom layer 13 and a first non-adhesive area 14FC2 not bonded to each other in the transverse fixing area 14FC. The first adhesive area 14FC1 has a transverse outer edge 14FCL1 and a longitudinal outer edge 14FLC4 of the first adhesive area. The first non-adhesive area 14FC2 has a transverse outer edge 14FCL2 and a longitudinal outer edge 14FCL3 of the first non-adhesive area. The transverse outer edge 14FCL2 of the first non-adhesive area is located inside the transverse outer edge 14FCL1 of the first adhesive area, and the longitudinal outer edge 14FCL3 of the first non-adhesive area is located inside the longitudinal outer edge 14FLC4 of the first adhesive area. That is, the first adhesive area 14FC1 is located transversely inside the first non-adhesive area 14FC2 in both the transverse and longitudinal directions, and is closer to the center of the absorbent article 1. By setting a first non-adhesive area in the area where the leak-proof partition is fixed, a space of a certain size can be formed between the leak-proof partition and the impermeable bottom layer. When the amount of excrement discharged is large and cannot be absorbed quickly, it remains on the surface layer. The excrement can enter the space of a certain size formed between the leak-proof partition and the impermeable bottom layer for buffering, providing a certain buffer time for the absorbent core to absorb the excrement. This achieves the effect of gradual absorption with sufficient space, preventing large amounts of excrement from leaking out. At the same time, if the user is lying on their side, the non-adhesive area of the leak-proof partition provides a larger capacity space compared to the case without a non-adhesive area, which can improve the leak-proof effect.
[0036] In the first embodiment, the lateral edges of the liquid-permeable surface layer 13 extend to the first non-adhesive region 14FC2, that is, the lateral edges of the liquid-permeable surface layer 13 extend into the buffer space formed between the leak-proof partition and the impermeable bottom layer. By extending the sides of the surface layer into the non-adhesive region, and since the surface layer is made of a hydrophilic material, excrement buffered in the non-adhesive region can be more quickly absorbed into the absorbent core through the guiding and absorbing effect of the surface layer. This design includes applications in all embodiments mentioned in this specification, and is not limited to the first embodiment; however, the present invention includes other technical solutions that do not include this design.
[0037] To further increase the waste buffering space, a third non-adhesive zone 14FL2 is provided in the longitudinal fixing zone 14FL. The remaining area of the longitudinal fixing zone 14FL is the third adhesive zone 14FL1. The third non-adhesive zone 14FL2 has a longitudinal outer edge 14FLL1 and a transverse inner edge 14FLL3. The third adhesive zone 14FL1 has a longitudinal outer edge 14FLL2 and a transverse inner edge 14FLL4. The longitudinal outer edge 14FLL1 of the third non-adhesive zone is located inside the longitudinal outer edge 14FLL2 of the third adhesive zone, and the transverse inner edge 14FLL3 of the third non-adhesive zone is located outside the transverse inner edge 14FLL4 of the third adhesive zone. This design creates a second buffering space at the longitudinal fixing part outside the free end of the leak-proof partition through the third non-adhesive zone, increasing the buffering space and the amount of liquid that can be buffered, thus improving the leak-proof effect. Simultaneously, the third non-adhesive zone 14FL2 overlaps with the absorbent core 12. The second buffer space overlaps with the core area, ensuring that buffer waste within this buffer space is better absorbed back into the core, thus improving leakage prevention. Solutions without this design are also conceivable in this invention; for example, the third bonding area could be designed intermittently.
[0038] Furthermore, the portion of the liquid-permeable surface layer 11 extending laterally from the absorbent core 12 is interconnected with the liquid-impermeable bottom layer 13 to enhance the strength between the layers.
[0039] Figures 4-7 This is a second embodiment of the present invention, which is an improvement on the first embodiment. The transverse fixing area 14FC is provided with a first adhesive area 14FC1 where a leak-proof partition is bonded to the impermeable base layer 13, a first non-adhesive area 14FC2 where the leak-proof partition is not bonded to the impermeable base layer, and a second adhesive area 14FC3 where the leak-proof partition is bonded to the impermeable base layer 13. The first non-adhesive area 14FC2 has a transverse inner edge 14FCL5, and the second adhesive area 14FC3 is located on the inner side of the transverse inner edge 14FCL5 of the first non-adhesive area. The lateral edge of the liquid-permeable surface layer 11 extends into the area of the first non-adhesive area 14FC2. In the second adhesive area 14FC3, the leak-proof partition is connected to the surface layer on the non-skin side of the liquid-permeable surface layer. Simultaneously, the portion of the liquid-permeable surface layer 11 extending from the transverse side of the absorbent core 12 is connected to the impermeable base layer 13 to enhance the adhesion between the layers. By setting up a second non-adhesive zone, the non-fixed buffer space of the fixed part is in a relatively independent state. The part of the excrement that is not absorbed by the core in time is introduced into the buffer space through the surface layer, and then reintroduced into the core from the buffer space through the surface layer. This can prevent the liquid stored in the buffer space from fluctuating greatly when the user moves a lot, which would cause the excrement to leak.
[0040] Figure 8This is a third embodiment of the present invention, which improves upon the second embodiment. In the first non-adhesive region 14FC2, the leak-proof partition 14 is folded and then laminated with other layers, forming a longitudinally extending fold in the first non-adhesive region 14FC2. This makes the actual lateral size (lateral width when fully unfolded) of the leak-proof partition larger than the lateral size of the impermeable base layer 13 within the first non-adhesive region 14FC2. During manufacturing, by folding the leak-proof partition material or using other feasible methods, the size of the leak-proof partition in the non-adhesive region (the lateral width when fully unfolded) is made larger than the width of the impermeable base layer, increasing the buffer space and the amount of liquid that can be buffered, thus improving the leak-proof effect.
[0041] Figure 9 This is a fourth embodiment of the present invention, an improvement on the third embodiment. This design can also be based on the first and second embodiments described above. The liquid-permeable surface layer 11 has a folded-back portion 11I in the first non-adhesive area 14FC2, folding back towards the non-skin side. The end of this folded-back portion 11I can extend between the absorbent core and the impermeable bottom layer (not shown in the figure). By having a folded-back portion on the side of the liquid-permeable surface layer, double-layer flow is achieved, accelerating the absorption of liquid from the buffer space into the core. Further extending the folded portion to the non-skin side of the absorbent core allows for absorption of excrement from multiple surfaces of the core, increasing the absorption speed, releasing the buffer space to continue its buffering function, and further enhancing the leak-proof effect.
[0042] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.
Claims
1. A disposable absorbent article, comprising a liquid-permeable top layer, a liquid-impermeable bottom layer, and an absorbent core located between the liquid-permeable top layer and the liquid-impermeable bottom layer, wherein the length direction of the absorbent article is defined as longitudinal, the width direction as transverse, the side of the absorbent article closer to the skin during use is the skin side, and the side farther from the skin is the non-skin side, wherein a pair of symmetrically distributed leak-proof partitions extending longitudinally are provided on both transverse sides of the skin side of the liquid-permeable top layer, each leak-proof partition comprising a fixed portion and a free portion capable of standing upright, the fixed portion comprising a transverse fixed area and a longitudinal fixed area, the transverse fixed area extending along the entire longitudinal length of the absorbent article and located on the transverse outer side of the transverse outer edge of the free portion of the leak-proof partition, the longitudinal fixed areas being a pair located at the longitudinal ends of the free portion of the leak-proof partition, the transverse fixed areas and the longitudinal fixed areas being seamlessly connected at the longitudinal end region of the absorbent article, characterized in that... The lateral fixing area includes a first adhesive area and a first non-adhesive area. The leak-proof partition of the first adhesive area is bonded to the liquid-impermeable bottom layer, while the leak-proof partition of the first non-adhesive area is not bonded to the liquid-impermeable bottom layer. The lateral outer edge of the first non-adhesive area is located inside the lateral outer edge of the first adhesive area, and the longitudinal outer edge of the first non-adhesive area is located inside the longitudinal outer edge of the first adhesive area.
2. The disposable absorbent article according to claim 1, characterized in that... The liquid-permeable surface layer includes two lateral sides that extend into the first non-adhesive area.
3. A disposable absorbent article according to claim 2, characterized in that... The transverse fixing area is provided with a second bonding area on the inner side of the transverse inner edge of the first non-bonding area, and the leak-proof partition in the second bonding area is connected to the surface layer on the non-skin side of the liquid-permeable surface layer.
4. A disposable absorbent article according to claim 3, characterized in that... The liquid-permeable surface layer and the liquid-impermeable bottom layer in the second bonding area are interconnected.
5. A disposable absorbent article according to claim 3, characterized in that... The liquid-permeable surface layer has a liquid-permeable surface layer fold back in the first non-adhesive area, which folds back towards the non-skin side.
6. A disposable absorbent article according to claim 5, characterized in that... The end of the liquid-permeable surface layer fold extends between the absorbent core and the impermeable bottom layer.
7. A disposable absorbent article according to claim 1, characterized in that... The actual lateral size of the leak-proof partition in the first non-adhesive area is greater than the lateral size of the impermeable bottom layer in the first non-adhesive area.
8. A disposable absorbent article according to any one of claims 1-7, characterized in that... The longitudinal fixing area includes a third bonding area and a third non-bonding area. The longitudinal outer edge of the third non-bonding area is located inside the longitudinal outer edge of the third bonding area, and the transverse inner edge of the third non-bonding area is located outside the transverse inner edge of the third bonding area.
9. A disposable absorbent article according to claim 8, characterized in that... The third non-adhesive region overlaps with the absorbent core.