Self-attached absorption core and female hygienic product
By using a self-adhesive absorbent core design, and combining an expansion layer and a locking structure, the problem of poor fit between sanitary napkins and the human body is solved. This achieves efficient prevention of side and back leakage, and improves comfort and absorbency.
Patent Information
- Application Number
- CN202422414387.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing sanitary napkins do not fit the body well during use, leading to friction, discomfort, skin damage, and leakage problems, especially during heavy menstrual flow, which can easily cause side leakage or back leakage.
It adopts a self-adhesive absorbent core design, including an absorbent core body and an elastic fiber structure. It utilizes a combination of an expansion layer and a locking structure. The expansion layer achieves self-expansion and adhesion through the wetting and opening of the locking structure, and the functionality is enhanced by microcapsules.
It improves the fit of sanitary napkins to the body, prevents side and back leakage, enhances comfort and liquid transfer speed, and achieves multi-functional absorption.
Smart Images
Figure CN223715911U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sanitary towel field, more specifically, relate to a self -adhesion's absorption core and female sanitary product. BACKGROUND
[0002] Sanitary towel is a kind of sanitary product used by women during menstruation, and the main material is cotton, non-woven fabric, pulp or high molecular polymer and high molecular polymer composite paper formed by the above material composite, and the side edge is designed mainly to prevent side leakage, and is divided into three layers from inside to outside, i.e., surface layer, absorption core and bottom layer.Sanitary towel, as a kind of disposable sanitary product, plays an increasingly important role in physiological health needs.Sanitary towel can effectively absorb menstrual blood and bring comfort and protection to women.During use, the sanitary towel needs to be flatly pasted at the bottom of the underpants to ensure that the front of the sanitary towel faces upwards so as to better absorb menstrual blood.With the development of social economy and the improvement of women's health awareness, the market consumption of female sanitary products is increasing continuously.Among female sanitary products, sanitary towel occupies the first place in the market with absolute advantage.In the environment of consumption upgrading, people pay more and more attention to the practicability and comfort of sanitary towel products.
[0003] However, the existing sanitary towel has low fitting degree with the human body in actual use, and there is a gap between the sanitary towel and the human body, and with the activity of the human body, the sanitary towel will constantly rub the human body, leading to discomfort and even skin redness and skin damage, and when the gap exists in the middle or tail, or large-flow menstrual blood appears, leakage or side leakage is likely to occur, clothes are polluted, and the use experience is poor.In order to solve this problem, some products cut the tail of the sanitary towel into a V shape, which theoretically makes the tail area more fit the body curve;But in fact, the stiffness of the product material itself and the different body curves of each person affect that V-shaped cutting can hardly ensure that the entire towel body is completely fitted.Therefore, it has great practical significance to study a sanitary towel with high fitting degree. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming at least one defect (deficiency) of the prior art, providing a self-adhesion's absorption core and female sanitary product, and improving the fitting degree of sanitary towel with the human body during use.
[0005] One object of the utility model is to provide a self-adhesion's absorption core, which comprises an absorption core body, and an elastic fiber structure is arranged on the absorption core body;The elastic fiber structure comprises at least two compressed expansion layers, the expansion layers are vertically stacked, and a locking structure for controlling the recovery of the compressed expansion layers is arranged;The locking structure is connected with the expansion layers.
[0006] In the technical solution, the absorbent core is used for absorbing and locking liquid; the elastic fiber structure is a liquid absorbing structure, and the elasticity thereof can increase the comfort of the absorbent core; the swelling layer is a liquid absorbing layer capable of swelling, and the vertical arrangement of the swelling layer means that the swelling layer is arranged in a vertical direction; the locking structure locks the swelling layer so that the swelling layer is in a compressed state, and when the locking structure is released, the swelling layer returns to a swelling state, at which time the thickness of the swelling layer increases, and after the thickness increases, the swelling layer can be fitted to the body curve of a female, thereby improving the fitting degree of the absorbent core and effectively preventing side leakage and back leakage. Preferably, the locking structure can be a water-soluble line or a water-soluble film, which is broken after coming into contact with liquid. The arrangement of the locking structure facilitates the recovery of the swelling state of the compressed swelling layer, and the elasticity of the elastic fiber layer is also conducive to further improving the comfort.
[0007] In addition, after the liquid penetrates through the first swelling layer, it is absorbed by the second swelling layer, and when there are multiple swelling layers, the same applies, thereby avoiding the accumulation of liquid in the first swelling layer, improving the comfort, and preventing excessive accumulation of liquid on the surface and side leakage.
[0008] Further, the swelling layer comprises a first swelling layer, a second swelling layer and a third swelling layer; the first swelling layer and the third swelling layer are respectively arranged on both sides of the second swelling layer; one end of the third swelling layer is connected to the second swelling layer, and the other end of the third swelling layer is connected to the first swelling layer.
[0009] In the technical solution, the first swelling layer, the second swelling layer and the third swelling layer are arranged in a vertical direction. If the number of swelling layers is too large, although enough liquid can be absorbed, the thickness of the compressed state will also increase too much, which will increase the difficulty of compression and increase the overall thickness of the core, greatly affecting the comfort of use. Therefore, the appropriate number of layers is arranged to improve the fitting degree without affecting the comfort and prevent liquid leakage.
[0010] Further, the first swelling layer is formed with an opening away from the side connected to the third swelling layer; and the locking structure is arranged on the opening.
[0011] In the technical solution, when the locking structure is released, the first swelling layer swells and moves in the direction of increasing the opening, that is, the moving direction is the surface of the core, which is conducive to the fitting with the human body; in some embodiments of the utility model, the first swelling layer and the second swelling layer are integrally connected, and the second swelling layer and the third swelling layer are also integrally connected, which improves the transmission speed of liquid and further prevents the accumulation of liquid on the surface of the absorbent core, thereby improving the comfort and preventing liquid leakage.
[0012] Further, a gap is left between the locking structure and the outer edge of the opening, and the gap is 0.5mm to 2mm.
[0013] In the technical solution, the gap is set to have a width of 0.5mm to 2mm; the gap is set to provide protection for the locking structure to prevent it from being exposed, thereby reducing the risk of being accidentally touched; at the same time, the appropriate width of the gap can prevent the distance between the locking structure and the edge of the opening from being too long, thereby ensuring that the difficulty of triggering the unlocking of the locking structure is not too great, so that its function can normally play, and at the same time, the edge of the first expansion layer is prevented from forming a wrinkle or eversion.
[0014] Further, the locking structure is in a strip shape, and has a width of 1.5mm to 3mm.
[0015] In the technical solution, only when all parts of the locking structure are completely disconnected and unlocked, the expansion layer can be completely expanded, and the strip-shaped locking structure design is conducive to improving its stability and reliability. The appropriate width of the locking structure is conducive to ensuring that the time for unlocking is not too long, thereby ensuring that the expansion layer can be efficiently and smoothly decompressed.
[0016] Further, the locking structure is a wet-opened thread glue.
[0017] In the technical solution, the thread glue as the locking structure is simple and reliable to produce and process, and is suitable for mass production; the wet opening is a self-opening by fully utilizing the liquid absorption characteristics, so that no action is needed before forming a gap with the body to improve comfort; and when liquid absorption is needed, the thread glue can be triggered to expand immediately and tightly, thereby fully meeting different needs.
[0018] Further, the thread glue has a tensile strength of 0.1N to 0.3N after being wetted.
[0019] In the technical solution, the appropriate limitation of the wet strength of the thread glue helps to adapt to different environments, and through the limitation of the strength after being wetted, it is ensured that the thread glue can be destroyed by the self-restoring expansion of the expansion layer after being wetted by the liquid, thereby avoiding the hindering of the recovery of the layer expansion layer and ensuring the realization of the function of improving the fit.
[0020] Further, the expansion layer is a compressed fluffy fiber layer.
[0021] In the technical solution, the fluffy fiber layer helps to provide better expansion effect after decompression, and the large gap between the fibers of the fluffy layer itself makes it quickly recover and expand, thereby improving the liquid absorption effect and accelerating the conduction of the liquid, and the good air permeability can improve the comfort.
[0022] Further, the expansion layer is distributed with microcapsules for storing functional substances.
[0023] In the technical solution, the microcapsules are arranged to make full use of the gaps in the expansion layer, and the different functional substances wrapped by the microcapsules can effectively realize the multifunctionalization of the absorbent core and meet the demand for increasing more functions.
[0024] Another object of the present application is to provide a female sanitary product, comprising a mask and a bottom film, wherein the mask and the bottom film are provided with any one of the self-adhesive absorbent cores.
[0025] In the technical solution, the absorbent core is applied to the female sanitary product, which can effectively promote the contact between the sanitary product and the body, reduce various problems caused by improper use, greatly improve the transmission speed and liquid absorption amount of the liquid, and improve the overall use effect.
[0026] Compared with the prior art, the present application has the following advantages:
[0027] (1) After the locking structure of the present application is loosened, the expansion layer returns to the expanded state, at which time the thickness of the expansion layer increases, and the thickness increases to fit the female body curve, thereby improving the fit of the absorbent core body and effectively preventing side leakage and back leakage.
[0028] (2) After the liquid penetrates through the first layer of expansion layer, it is absorbed by the second layer of expansion layer, and when there are multiple expansion layers, the same applies, avoiding the accumulation of liquid in the first layer of expansion layer, improving comfort, and preventing excessive accumulation of liquid on the surface and side leakage.
[0029] (3) The present application makes full use of the gaps in the expansion layer by arranging microcapsules, and the different functional substances wrapped by the microcapsules can effectively realize the multifunctionalization of the absorbent core and meet the demand for increasing more functions.
[0030] (4) The present application is provided with a locking structure wet opening, which makes full use of its liquid absorption characteristics to open automatically, so that no action is required to form a gap with the body and improve comfort; when liquid absorption is required, it can trigger immediate expansion and adhesion, fully meeting different needs. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 It is a perspective view of the elastic fiber structure of Example 1.
[0032] Figure 2 It is a cross-sectional view of the elastic fiber structure of Example 1.
[0033] Figure 3 It is a cross-sectional view of the elastic fiber structure of Example 2.
[0034] Figure 4 It is a partial structure diagram of the female sanitary product of Example 4.
[0035] Figure 5 Fig. 4 is a schematic view of a partial cross-sectional structure of a feminine hygiene product of Example 4.
[0036] Fig. 1 is a schematic view of a partial cross-sectional structure of a feminine hygiene product of Example 1. DETAILED DESCRIPTION
[0037] The drawings of the utility model are only used for example description, and cannot be understood as the limitation of the utility model. In order to better illustrate the following examples, some components of the drawings can be omitted, enlarged or reduced, and the size of the actual product is not represented. It is understandable that some well-known structures and their descriptions in the drawings can be omitted for those skilled in the art.
[0038] Example 1
[0039] Reference Figure 1 and Figure 2 The embodiment provides a self-adhesive absorbent core, comprising an absorbent core body, wherein an elastic fiber structure 100 is arranged on the absorbent core body; the elastic fiber structure 100 comprises at least two compressed expansion layers, the expansion layers are vertically stacked, and a locking structure 200 for controlling the recovery of the compressed expansion layers is arranged; and the locking structure 200 is connected with the expansion layers. Preferably, the locking structure 200 is in the shape of a strip, and the width of the locking structure 200 is 1.5 mm to 3 mm. For example, the width of the locking structure 200 is 1.7 mm, 2 mm, 2.5 mm, 2.8 mm or 3 mm.
[0040] The locking structure 200 is a wet-open thread glue. When the thread glue is used as the locking structure 200, the production and processing are simple and reliable, and batch production is suitable. The wet-open function is a self-opening function by fully utilizing the liquid absorption characteristics, so that the function is not required before the gap is formed with the body, the comfort is improved, and the thread glue is expanded immediately and tightly triggered when the liquid absorption is required, so that different requirements are fully met. The tensile strength of the thread glue after wetting is 0.1 N to 0.3 N. For example, the tensile strength is 0.15 N, 0.2 N, 0.25 N or 0.3 N. The appropriate limitation of the wet strength of the thread glue helps to adapt to different environments. By limiting the strength after wetting, it is ensured that the thread glue can be damaged by the self-recovery expansion of the expansion layer after being wetted by liquid, the recovery of the expansion layer is prevented, and the realization of the function of improving the adhesion is ensured. Preferably, the main body of the absorbent core body is an ultra-thin core 400, and the absorbent core body is arranged on the ultra-thin core 400. Further, the ultra-thin core 400 is a dust-free paper SAP ultra-thin core 400.
[0041] The absorbent core is used for absorbing and locking liquid; the elastic fiber structure 100 is a liquid absorption structure, and the elasticity thereof can increase the comfort of the absorbent core; the swelling layer is a liquid absorption layer capable of swelling, and the vertical arrangement of the swelling layer can be understood as the vertical arrangement of the swelling layer; the locking structure 200 locks the swelling layer to make the swelling layer in a compressed state, and when the locking structure 200 is released, the swelling layer returns to the swelling state, at which time the thickness of the swelling layer increases, and after the thickness increases, the swelling layer can be fitted to the female body curve, thereby improving the fitting degree of the absorbent core and effectively preventing side leakage and back leakage. Preferably, the locking structure 200 can be a water-soluble line or a water-soluble film, which can be broken after meeting liquid. The arrangement of the locking structure 200 facilitates the recovery of the swelling state of the compressed swelling layer, and the elasticity of the elastic fiber layer also helps to further improve the comfort.
[0042] In addition, after the liquid penetrates through the first layer of the swelling layer, it is absorbed by the second layer of the swelling layer, and when there are multiple swelling layers, the same applies, thereby avoiding the accumulation of liquid in the first layer of the swelling layer, improving comfort, and preventing excessive accumulation of liquid on the surface and side leakage.
[0043] The swelling layer includes a first swelling layer 110, a second swelling layer 120, and a third swelling layer 130; the first swelling layer 110 and the third swelling layer 130 are respectively arranged on both sides of the second swelling layer 120; one end of the third swelling layer 130 is connected to the second swelling layer 120, and the other end of the third swelling layer 130 is connected to the first swelling layer 110. Preferably, the first swelling layer 110 and the second swelling layer 120 are integrally connected, and the second swelling layer 120 and the third swelling layer 130 are integrally connected.
[0044] The first swelling layer 110, the second swelling layer 120, and the third swelling layer 130 are arranged in a vertical direction. If the number of swelling layers is too large, although enough liquid can be absorbed, the thickness of the compressed state will also increase too much, which will increase the difficulty of compression and increase the overall thickness of the core, greatly affecting the comfort of use. Therefore, the appropriate number of layers is arranged to improve the fitting degree without affecting the comfort, thereby preventing liquid leakage.
[0045] The first swelling layer 110 is formed with an opening 300 away from the side connected to the third swelling layer 130; and the locking structure 200 is arranged on the opening 300. A gap is left between the locking structure 200 and the outer edge of the opening 300, and the gap is 0.5 mm to 2 mm, for example, the width of the gap is 0.5 mm, 1.0 mm, 1.5 mm, or 2 mm, etc.
[0046] 0.5mm to 2mm of the gap width; the gap can provide protection for the locking structure 200 to prevent it from being exposed, thereby reducing the risk of being mistaken; at the same time, the appropriate width of the gap can prevent the distance between the locking structure 200 and the edge of the opening 300 from being too long, thereby ensuring that the difficulty of triggering the unlocking of the locking structure 200 is not too great, so that its function can normally play, while also avoiding the edges of the first expansion layer 110 from forming wrinkles or eversion.
[0047] When the locking structure 200 is loosened, the first expansion layer 110 expands and moves in the direction of increasing the opening 300, i.e. its moving direction is the surface of the new core body, which is beneficial to its fit with the human body; in some embodiments of the present application, the first expansion layer 110 is integrally connected with the second expansion layer 120, and the second expansion layer 120 and the third expansion layer 130 are also integrally connected, which improves the transmission speed of the liquid and further prevents the liquid from accumulating on the surface of the absorbent core, thereby improving comfort and preventing liquid leakage.
[0048] Preferably, the expansion layer is a compressed fluffy fiber layer, which helps to provide better expansion effect after decompression. The fluffy layer itself has a large gap between fibers, which allows it to quickly recover and expand, thereby improving the liquid absorption effect and accelerating the conduction of the liquid. Specifically, the weight of the fluffy fiber layer is 20gsm-35gsm; the material of the fluffy fiber layer is 3D ES fiber, 12D ES fiber, hollow PET polyester fiber or PBT / PET elastic fiber, etc.
[0049] Embodiment 2
[0050] Reference Figure 3 The present embodiment provides a self-fitting absorbent core, which has a structure similar to that of Embodiment 1, except that one end of the first expansion layer 110 is connected to the second expansion layer 120, and the other end is connected to the third expansion layer 130; the third expansion layer 130 forms an opening 300 away from the end connected to the first expansion layer 110.
[0051] Embodiment 3
[0052] The present embodiment provides a sub-fitting absorbent core, which has a structure similar to that of Embodiment 1, except that the expansion layer is distributed with microcapsules for storing functional substances. Preferably, the microcapsules can be added with substances that can lighten menstrual blood, or substances that can absorb odors, or substances that can absorb liquid to further enhance absorbency, etc. The setting of the microcapsules makes full use of the gaps in the expansion layer, and by wrapping different functional substances in the microcapsules, the multifunctionalization of the absorbent core can be effectively realized, meeting the increasing demand for more functions.
[0053] Embodiment 4
[0054] ReferenceFigure 4 and Figure 5 The embodiment provides a female sanitary product, comprising a face film 500 and a bottom film 600, and a self-adhering absorbent core provided by any one of the embodiments 1 to 3 is arranged between the face film 500 and the bottom film 600. By applying the absorbent core to the female sanitary product, the contact between the sanitary product and the body can be effectively promoted, various problems caused by improper use can be reduced, the liquid transmission speed and the liquid absorption capacity can be greatly improved, and the overall use effect is improved.
[0055] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the technical scheme of the utility model, and are not a limitation on the specific embodiments of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model claim should be included in the protection scope of the utility model claim.
Claims
1. A self-conformable absorbent core comprising an absorbent core body, characterized by, The absorbent core is provided with an elastic fiber structure; The elastic fiber structure comprises at least two compressed expansion layers stacked vertically, and a locking structure for controlling the recovery of the compressed expansion layers; the locking structure is connected with the expansion layers.
2. A self-compliant absorbent core according to claim 1, characterized in that, The expansion layers comprise a first expansion layer, a second expansion layer and a third expansion layer; the first and third expansion layers are respectively arranged on the two sides of the second expansion layer; one end of the third expansion layer is connected with the second expansion layer, and the other end of the third expansion layer is connected with the first expansion layer.
3. A self-compliant absorbent core according to claim 2, characterized in that, The first expansion layer is formed with an opening away from the side connected with the third expansion layer; the locking structure is arranged on the opening.
4. A self-compliant absorbent core according to claim 3, characterized in that, A gap is left between the locking structure and the outer edge of the opening, and the gap is 0.5-2 mm.
5. A self-compliant absorbent core according to claim 1, characterized in that, The locking structure is in the shape of a long strip, and the width is 1.5-3 mm.
6. A self-compliant absorbent core according to claim 1, characterized in that, The locking structure is a wet-open thread glue.
7. A self-compliant absorbent core according to claim 6, characterized in that, The tensile strength of the thread glue after wetting is 0.1-0.3 N.
8. A self-compliant absorbent core according to any of claims 1-7, characterized in that, The expansion layer is a compressed fluffy fiber layer.
9. A self-attaching absorbent core according to any of claims 1-7, characterized in that, The expansion layer is distributed with microcapsules for storing functional substances.
10. A feminine hygiene product comprising a top sheet and a back sheet, characterized in that, The mask and the bottom film are provided with a self-adhesive absorbent core according to any one of claims 1-9.