A fast-absorbing three-dimensional light sanitary napkin
By using a combined core with a thick middle and thin surroundings in the sanitary napkin, the expansion structure of the absorber sheet layer reduces lateral extrusion and lateral leakage, the problems of increased consumables and poor fitting caused by the thickness of the front and rear ends of the absorber core of the traditional sanitary napkin are solved, and more efficient absorption and better fitting effect are achieved.
Patent Information
- Application Number
- CN202420883194.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The front and rear ends of the traditional sanitary napkins are thicker in the front and back, resulting in increased consumables and poor fit. They have a strong sense of foreign objects and a poor sense of comfort during use.
A combined core with a thick and thin surroundings is adopted, including an absorbent surface layer and an absorbent sheet layer between the liquid-permeable surface layer and the liquid-impermeable bottom layer. The absorbent sheet layer expands after absorbing liquid, and opens the liquid-permeable surface layer to reduce lateral squeezing and lateral leakage, forming a structure with high and low sides to fit the skin of the private parts.
It improves absorption efficiency, reduces moisture, enhances fit, avoids side leakage, and enhances the overall lightness and comfort of the sanitary napkin.
Smart Images
Figure CN222708571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sanitary napkins, in particular to a three-dimensional thin sanitary napkin with rapid absorption. Background Art
[0002] The overall thickness of the absorbent core of a traditional sanitary napkin is relatively uniform. During the absorption process, the absorbent core mainly absorbs menstrual fluid in the middle section, and the front and rear ends absorb less fluid. This makes the absorbent core at the front and rear ends not only consumable, but also has poor fit due to its thickness. During use, there is a strong foreign body sensation and poor comfort.
[0003] This case arises to solve the above problems. Utility Model Content
[0004] Therefore, in view of the above problems, the utility model proposes a fast-absorbing three-dimensional thin sanitary napkin which is thick in the middle and thin around the edges, and the middle part expands and bulges upward after absorbing liquid to improve the fit with the body.
[0005] In order to solve the above technical problems, the solution adopted by the utility model is: a fast-absorbing three-dimensional light and thin sanitary napkin, comprising a liquid-permeable surface layer, a liquid-impermeable bottom layer, an adhesive layer and a release paper arranged on the back of the liquid-impermeable bottom layer, and a combined core body with a thick middle and thin surroundings to increase the absorption capacity of the middle part and make the surrounding parts light and thin and close to the body is arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer;
[0006] The combined core body includes an absorbent surface layer laid flat between a liquid-permeable surface layer and a liquid-impermeable bottom layer in the front-to-back direction, and an absorbent sheet layer arranged in the middle of the upper surface, the middle of the lower surface, or the middle of the inner part of the absorbent surface layer for rapidly absorbing liquid and expanding. During the expansion process, the liquid-permeable surface layer is first stretched out in the left-right direction to avoid side leakage under the lateral squeezing folds on the inner thigh, and then the liquid-permeable surface layer is lifted up to form a high middle and low sides to fit the private skin, increase the liquid-permeable area, and further avoid side leakage.
[0007] A further improvement is that the absorbent surface layer is spread out and laid on the liquid-impermeable bottom layer or folded and laid on the liquid-impermeable bottom layer.
[0008] A further improvement is that the absorbent sheet layer is unfolded or folded and laid on the absorbent surface layer.
[0009] A further improvement is that the absorbent sheet layer comprises an upper sheet layer, a lower sheet layer, and first macromolecular water-absorbing particles, and the first macromolecular water-absorbing particles are evenly spread between the upper sheet layer and the lower sheet layer.
[0010] A further improvement is that the materials of the upper sheet layer and the lower sheet layer are hydrophilic non-woven fabrics or expanded paper or absorbent paper layers.
[0011] A further improvement is that the absorption surface layer comprises an absorption layer and second high molecular water-absorbing particles evenly spread on the absorption layer.
[0012] A further improvement is that the absorption layer is a puffed paper or a water-absorbing paper layer.
[0013] A further improvement is that the material of the liquid-permeable surface layer is a hydrophilic non-woven fabric whose cotton content is not 100% so as to reduce the amount of liquid absorbed by the surface layer and reduce the feeling of dampness.
[0014] A further improvement is that penetration holes for accelerating liquid infiltration are evenly arranged on the liquid-permeable surface layer.
[0015] A further improvement is that suspended edges are provided between the left and right sides of the liquid-permeable surface layer and the liquid-impermeable bottom layer.
[0016] By adopting the above technical solution, the beneficial effects of the utility model are:
[0017] 1. The absorbent core used in this case is a composite core that is thick in the middle and thin around the edges to increase the absorption capacity of the middle part and make the edges light and thin and close-fitting. This can effectively solve the problem of thicker consumables and poor fit at the front and rear ends of the absorbent core.
[0018] The absorbent sheet layer in the combined core expands more after absorbing liquid than the absorbent surface layer, so that the sanitary napkin gradually becomes a convex shape with a higher middle and lower surroundings during use, which can better fit the private parts. At the same time, the middle part of the liquid-permeable surface layer is lifted up to form a slope, which increases the surface area for menstrual fluid to flow, improves absorption efficiency, and reduces the feeling of dampness.
[0019] When women use sanitary napkins, the middle section of the sanitary napkin may bend and fold due to the lateral pressure from the inner thighs, which not only reduces the liquid absorption area but also easily causes side leakage. The thickness of the absorbent layer in this case expands after absorbing liquid to resist bending, thereby reducing the folding area and avoiding side leakage.
[0020] 2. In the combined core of this case, the amount of high-molecular water-absorbent particles spread per unit area on the absorbent sheet layer is greater than the amount of high-molecular water-absorbent particles spread per unit area on the absorbent surface layer, so that the absorbent sheet layer takes on the main task of absorbing menstrual fluid, while the absorbent surface layer only needs to absorb the menstrual fluid that the absorbent sheet layer fails to absorb in time, so that the absorbent surface layer can be light and close to the body, and the overall lightness and comfort of the sanitary napkin is improved without reducing the absorption amount.
[0021] 3. The liquid-permeable surface layer in this case does not use pure cotton surface layer to avoid excessive water accumulation in the surface layer and reduce the damp feeling during the use of the sanitary napkin.
[0022] 4. In this case, the liquid-permeable surface layer does not use pure cotton, and the liquid penetration effect is not as good as that of pure cotton. Therefore, penetration holes are opened on the liquid-permeable surface to improve the liquid absorption effect of the absorbent core. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of a fast-absorbing three-dimensional thin sanitary napkin according to an embodiment of the utility model.
[0024] Figure 2 It is a schematic structural diagram of an absorbent sheet layer in a three-dimensional, light and thin sanitary napkin with rapid absorption according to an embodiment of the utility model. DETAILED DESCRIPTION
[0025] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.
[0026] refer to Figure 1 to Figure 2 The embodiment of the utility model discloses a fast-absorbing three-dimensional light and thin sanitary napkin, comprising a liquid-permeable surface layer 10, a liquid-impermeable bottom layer 11, a glue layer 12 and a release paper 13 arranged on the back of the liquid-impermeable bottom layer, and a combined core body with a thick middle and thin surroundings is arranged between the liquid-permeable surface layer 10 and the liquid-impermeable bottom layer 11 to increase the absorption capacity of the middle part and make the surrounding parts light and thin and close to the body;
[0027] The composite core includes an absorbent surface layer 14 laid flat between a liquid-permeable surface layer 10 and a liquid-impermeable bottom layer 11 in the front-to-back direction, and an absorbent sheet layer 15 arranged in the middle of the upper surface, the middle of the lower surface, or the middle of the inner part of the absorbent surface layer 14 for rapidly absorbing liquid and expanding. During the expansion process, the liquid-permeable surface layer 10 is first stretched out in the left-right direction to avoid leakage under the lateral compression wrinkles on the inner thigh, and then the liquid-permeable surface layer 10 is lifted up to form a high middle and low sides to fit the private skin, increase the liquid permeable area, and further avoid side leakage. The absorbent surface layer 14 is folded and laid on the liquid-impermeable bottom layer 11, and the absorbent sheet layer 15 is unfolded or folded and laid in the middle of the absorbent surface layer 14.
[0028] The absorbent sheet 15 includes an upper sheet 151, a lower sheet 152, and first polymer water-absorbing particles 153. The first polymer water-absorbing particles 153 are evenly spread between the upper sheet 151 and the lower sheet 152. The materials of the upper sheet 151 and the lower sheet 152 are hydrophilic non-woven fabrics or puffed paper or absorbent paper layers. The absorbent surface layer 14 includes an absorbent layer and second polymer water-absorbing particles evenly spread on the absorbent layer. The absorbent layer is a puffed paper or absorbent paper layer. The weight of the first polymer water-absorbing particles spread per unit area is not less than the weight of the second polymer water-absorbing particles spread per unit area.
[0029] The material of the liquid-permeable surface layer 10 is a hydrophilic nonwoven fabric with a non-100% cotton content to reduce the amount of liquid absorbed by the surface layer and reduce the dampness. The liquid-permeable surface layer 10 is evenly provided with permeable holes for accelerating the infiltration of liquid. A floating edge 16 is provided between the left and right sides of the liquid-permeable surface layer 10 and the liquid-impermeable bottom layer 11.
[0030] There are many options for the material of the liquid-impermeable bottom layer, which is a well-known technology. The improvement of this case is not on the liquid-impermeable bottom layer, so it will not be described in detail here.
[0031] Based on the above technical solution, the absorbent surface layer 14 can also be unfolded and laid on the liquid-impermeable bottom layer 11 , and the absorbent sheet layer 15 can be unfolded or folded and laid on the middle of the upper surface or the middle of the lower surface of the absorbent surface layer 14 .
[0032] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.
Claims
1. A fast-absorbing three-dimensional thin sanitary napkin, comprising a liquid-permeable surface layer, a liquid-impermeable bottom layer, an adhesive layer and a release paper arranged on the back of the liquid-impermeable bottom layer, characterized in that: A combined core body is arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer, which is thick in the middle and thin around the edges to increase the absorption capacity of the middle portion and make the edges thin and close-fitting. The combined core body includes an absorbent surface layer laid flat between a liquid-permeable surface layer and a liquid-impermeable bottom layer in the front-to-back direction, and an absorbent sheet layer arranged in the middle of the upper surface, the middle of the lower surface, or the middle of the inner part of the absorbent surface layer for rapidly absorbing liquid and expanding. During the expansion process, the liquid-permeable surface layer is first stretched out in the left-right direction to avoid side leakage under the lateral squeezing folds on the inner thigh, and then the liquid-permeable surface layer is lifted up to form a high middle and low sides to fit the private skin, increase the liquid-permeable area, and further avoid side leakage.
2. A fast-absorbing three-dimensional thin sanitary napkin according to claim 1, characterized in that: The absorbent surface layer is spread out and laid on the liquid-impermeable bottom layer or folded and laid on the liquid-impermeable bottom layer.
3. A fast-absorbing three-dimensional thin sanitary napkin according to claim 1, characterized in that: The absorbent sheet layer is unfolded or folded and laid on the absorbent surface layer.
4. A fast-absorbing three-dimensional thin sanitary napkin according to claim 1 or 3, characterized in that: The absorbent sheet layer comprises an upper sheet layer, a lower sheet layer, and first macromolecular water-absorbing particles, and the first macromolecular water-absorbing particles are evenly spread between the upper sheet layer and the lower sheet layer.
5. A fast-absorbing three-dimensional thin sanitary napkin according to claim 4, characterized in that: The materials of the upper sheet layer and the lower sheet layer are hydrophilic non-woven fabrics or expanded paper or absorbent paper layers.
6. A fast-absorbing three-dimensional light and thin sanitary napkin according to claim 1 or 2, characterized in that: The absorption surface layer comprises an absorption layer and second high molecular water-absorbing particles evenly spread on the absorption layer.
7. A fast-absorbing three-dimensional light sanitary napkin according to claim 6, characterized in that: The absorption layer is a puffed paper or a water-absorbing paper layer.
8. A fast-absorbing three-dimensional light and thin sanitary napkin according to claim 1, 2 or 3, characterized in that: The material of the liquid-permeable surface layer is a hydrophilic non-woven fabric which does not contain 100% cotton so as to reduce the amount of liquid absorbed by the surface layer and reduce the feeling of dampness.
9. A fast-absorbing three-dimensional light and thin sanitary napkin according to claim 8, characterized in that: The liquid-permeable surface layer is evenly provided with permeable holes for accelerating the infiltration of liquid.
10. A fast-absorbing three-dimensional light sanitary napkin according to claim 8, characterized in that: Suspended edges are arranged between the left and right sides of the liquid-permeable surface layer and the liquid-impermeable bottom layer.