Highly conformable flexible sanitary napkin
By incorporating memory elastic side wings and temperature-sensitive adhesive into the sanitary napkin, the problem of poor adhesion of sanitary napkins is solved, achieving high fit and leak-proof performance during activity, thus improving comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN KAYSON HYGIENE PROD CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-06-12
AI Technical Summary
Sanitary napkins are prone to poor adhesion during use, especially when the user is active.
Featuring a design with memory elastic side wings and temperature-sensitive adhesive, the memory elastic side wings are elastic and resilient, dynamically adapting to the deformation of the underwear. The viscosity of the temperature-sensitive adhesive changes with temperature to enhance adhesion. Combined with a multi-row guide groove and baffle structure, it improves fit and leak-proof performance.
Even when the user is active, the sanitary napkin can maintain a high degree of fit, reducing side and back leakage, and is easy to separate after use, improving comfort and safety.
Smart Images
Figure CN224345081U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sanitary napkin technology, and in particular to a highly flexible sanitary napkin with excellent adhesion. Background Technology
[0002] Sanitary napkins are hygiene products used by women during menstruation. They are mainly made of cotton, non-woven fabric, pulp, or a combination of the above materials to form a polymer and polymer composite paper. They mainly consist of a top layer, an absorbent core, and a bottom film. When using them, first peel off the release film on the bottom, stick the adhesive side of the bottom to the underwear, and then wrap the two side wings around and stick them to the underwear.
[0003] When a user is active, due to factors such as the usage scenario, sanitary napkins may not adhere firmly to underwear during application. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a highly adhesive and flexible sanitary napkin to solve the problem of poor adhesion of sanitary napkins.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A highly adhesive flexible sanitary napkin includes a top layer, an absorbent core, a bottom film, and two memory elastic side wings. The peripheries of the top layer and the bottom film are pressed and adhered together. The absorbent core is fixed between the top layer and the bottom film. The two memory elastic side wings are disposed on both sides of the absorbent core and pressed and adhered between the top layer and the bottom film. A temperature-sensitive adhesive is provided on the back of the bottom film, and a release film is adhered to the temperature-sensitive adhesive.
[0007] Furthermore, recessed side guide grooves are pressed together on both sides of the surface layer and the absorbent core, and multiple recessed rear guide grooves are pressed together on the bottom of the surface layer and the absorbent core.
[0008] Furthermore, the two side guide grooves are provided with a side leakage prevention structure on the outside. The side leakage prevention structure is provided on the absorbent core and includes multiple rows of first baffles protruding from the surface layer. The first baffles are composed of several first protrusions that are equally spaced apart, and the first protrusions between adjacent first baffles are staggered.
[0009] Furthermore, one set of the anti-leakage structure includes two rows of the first baffles, the first baffles having an arc adapted to the side guide groove.
[0010] Furthermore, the bottom of the rear guide groove is provided with an anti-leakage structure, which is provided on the absorbent core and includes multiple rows of second baffles protruding from the surface layer. The second baffles are composed of several second protrusions that are equally spaced apart, and the second protrusions between adjacent second baffles are staggered.
[0011] Furthermore, the anti-leakage structure includes three rows of the second baffles, each baffle having an arc that adapts to the bottom of the absorbent core.
[0012] Furthermore, the second protruding point is circular in shape, or the second protruding points on the three rows of second baffles from top to bottom of the anti-leakage structure are circular, triangular and circular in shape respectively, with one side of the triangle facing the first row of second baffles.
[0013] Furthermore, the rear guide groove extends along the length of the absorbent core, and an adhesive strip protruding from the surface layer is provided between the rear guide grooves, the cross-sectional area of the adhesive strip gradually increasing from top to bottom.
[0014] Furthermore, the absorbent core and the bottom film are seamlessly bonded together.
[0015] Furthermore, the back of the memory elastic side wing is provided with adhesive dots, and release paper is provided on the adhesive dots.
[0016] The beneficial effects of this utility model are:
[0017] The memory elastic side wings have a certain degree of elasticity and resilience. When attached to underwear, they can dynamically adapt and adhere to the underwear. Even when the user is active, the memory elastic side wings can adapt to the moving underwear and adhere closely to it. The temperature-sensitive adhesive uses a temperature-sensitive material. As the temperature changes, the viscosity of the temperature-sensitive adhesive also changes. Compared to room temperature, the viscosity of the temperature-sensitive adhesive increases at around 37°C. During use, it can increase the adhesion between the bottom film and the underwear, ensuring a good fit between the sanitary napkin and the underwear. After use, as the temperature decreases, the viscosity decreases, making it easier to separate the bottom film from the underwear. Attached Figure Description
[0018] Figure 1 This is a front structural diagram of a high-adhesion flexible sanitary napkin of this utility model;
[0019] Figure 2 This is another front view of the high-adhesion flexible sanitary napkin of this utility model;
[0020] Figure 3 This is a structural diagram of the back of the high-adhesion flexible sanitary napkin of this utility model.
[0021] In the diagram: 1. Top layer; 2. Absorbent core; 3. Bottom film; 4. Memory elastic side wings; 5. Temperature-sensitive adhesive; 6. Side guide groove; 7. Rear guide groove; 8. Anti-side leakage structure; 81. First baffle; 82. First protruding point; 9. Anti-rear leakage structure; 91. Second baffle; 92. Second protruding point; 10. Adhesive strip; 11. Dot adhesive. Detailed Implementation
[0022] To make the technical problems solved, the technical solutions and the beneficial effects of the utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] like Figure 1-3 As shown, this utility model provides a highly flexible sanitary napkin, including a surface layer 1, an absorbent core 2, a bottom film 3, and two memory elastic side wings 4. The peripheries of the surface layer 1 and the bottom film 3 are pressed and pasted together. The absorbent core 2 is fixed between the surface layer 1 and the bottom film 3. The two memory elastic side wings 4 are located on both sides of the absorbent core 2 and are pressed and pasted between the surface layer 1 and the bottom film 3. A temperature-sensitive adhesive 5 is provided on the back of the bottom film 3, and a release film is adhered to the temperature-sensitive adhesive 5.
[0024] During the corresponding pasting process of the surface layer 1 and the bottom film 3, the absorbent core 2 is fixed between the surface layer 1 and the bottom film 3, and the two memory elastic side wings 4 are pasted between the surface layer 1 and the bottom film 3. This simplifies the processing steps and bonds the surface layer 1, absorbent core 2, bottom film 3 and the two memory elastic side wings 4 into one piece, which is easy to achieve during processing.
[0025] The memory elastic side wings 4 are made of memory elastic fibers, possessing a certain degree of elasticity and resilience. When attached to underwear, they dynamically adapt and adhere to the underwear, maintaining a high degree of fit even when the user is active. The temperature-sensitive adhesive 5 is made of a temperature-sensitive material; its viscosity changes with temperature. Compared to room temperature, the viscosity of the temperature-sensitive adhesive 5 increases at around 37°C. During use, this increases the adhesion between the bottom film 3 and the underwear, ensuring a good fit between the sanitary napkin and the underwear. After use, as the temperature decreases, the adhesiveness decreases, making it easier to separate the bottom film 3 from the underwear.
[0026] Furthermore, recessed side guide grooves 6 are pressed together on both sides of the surface layer 1 and the absorbent core 2, multiple recessed rear guide grooves 7 are pressed together on the bottom of the surface layer 1 and the absorbent core 2, and multiple recessed front guide grooves are pressed together on the top of the surface layer 1 and the absorbent core 2. The side guide grooves 6, rear guide grooves 7, and front guide grooves serve two purposes: firstly, they increase the breathability of the sanitary napkin; secondly, they provide guidance for menstrual blood, accelerate menstrual blood absorption, and prevent side leakage.
[0027] refer to Figure 2The outer sides of the two side guide grooves 6 are provided with a side leakage prevention structure 8, which is located on the absorbent core 2. The side leakage prevention structure 8 includes multiple rows of first baffles 81 protruding from the surface layer 1. Each first baffle 81 is composed of several first protruding points 82 arranged at equal intervals, and the first protruding points 82 between adjacent first baffles 81 are staggered. The side leakage prevention structure 8 protrudes from the surface layer 1, fits the human body better, and can prevent menstrual blood from leaking from the side of the sanitary napkin. When the human body is in a sitting position, the first protruding points 82 fit the human body completely. By setting the side leakage prevention structure 8 as multiple rows of first baffles 81, and staggering the first protruding points 82 between adjacent first baffles 81, on the one hand, all the first protruding points 82 can completely block the side of the sanitary napkin, and on the other hand, the staggered design can increase the breathability of the side and prevent the private parts from becoming stuffy when sitting.
[0028] Furthermore, a set of anti-leakage structures 8 includes two rows of first baffles 81, the first baffles 81 having an arc adapted to the side guide groove 6.
[0029] Furthermore, the bottom of the rear guide groove 7 is provided with a rear leakage prevention structure 9, which is located on the absorbent core 2. The rear leakage prevention structure 9 includes multiple rows of second baffles 91 protruding from the surface layer 1. Each second baffle 91 is composed of several equally spaced second protrusions 92, with the second protrusions 92 of adjacent second baffles 91 staggered. Similar to the side leakage prevention structure 8, the rear leakage prevention structure 9 is mainly used to prevent leakage from the rear.
[0030] Furthermore, the anti-leakage structure 9 includes three rows of second baffles 91, each baffle 91 having an arc that adapts to the bottom of the absorbent core 2.
[0031] refer to Figure 1 The second protruding point 92 is circular in shape, and three rows of second baffles 91 are provided to prevent menstrual blood from the surface layer 1 from leaking out from the back of the sanitary napkin, or refer to... Figure 2 The anti-leakage structure 9 has three rows of second baffles 91 with the second protruding points 92 having shapes that are, respectively, circular, triangular, and circular, with one side of the triangle facing the first row of second baffles 91. The shape of the second protruding points 92 is defined so that the triangle can better block menstrual blood from flowing out of the surface layer 1.
[0032] Furthermore, the rear guide groove 7 extends along the length of the absorbent core 2, and an adhesive strip 10 protruding from the surface layer 1 is provided between the rear guide grooves 7. The cross-sectional area of the adhesive strip 10 gradually increases from top to bottom. When using the sanitary napkin, the adhesive strip 10 conforms to the user's buttocks, and the second protruding point 92 conforms to the body. The adhesive strip 10 and the second protruding point 92 work together to further increase the fit between the sanitary napkin and the body, ensuring the absorption of menstrual blood and preventing leakage. The first protruding point 82, the second protruding point 92, and the adhesive strip 10 are all made of absorbent material.
[0033] Furthermore, the absorbent core 2 and the bottom film 3 are seamlessly bonded together. Specifically, the surface layer 1, the absorbent core 2, and the bottom film 3 adopt multi-layer composite compression technology, resulting in a sanitary napkin with a thickness of less than 0.5mm.
[0034] Furthermore, the back of the memory elastic side wing 4 is provided with dotted adhesive 11, and release paper is provided on the dotted adhesive 11. The dotted adhesive 11 is made of ordinary adhesive and is distributed in a dotted pattern on the memory elastic side wing 4 to facilitate the elastic deformation of the memory elastic side wing 4.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A highly conforming flexible sanitary napkin, characterized in that, The device includes a surface layer (1), an absorbent core (2), a bottom film (3), and two memory elastic side wings (4). The periphery of the surface layer (1) and the bottom film (3) are pressed and bonded together. The absorbent core (2) is fixed between the surface layer (1) and the bottom film (3). The two memory elastic side wings (4) are located on both sides of the absorbent core (2) and are pressed and bonded between the surface layer (1) and the bottom film (3). The back of the bottom film (3) is provided with a temperature-sensitive adhesive (5), and a release film is bonded to the temperature-sensitive adhesive (5).
2. The highly conforming flexible sanitary napkin according to claim 1, characterized in that, The surface layer (1) and the absorbent core (2) are pressed together with recessed side guide grooves (6) on both sides, and the bottom of the surface layer (1) and the absorbent core (2) are pressed together with multiple recessed rear guide grooves (7).
3. The highly conforming flexible sanitary napkin according to claim 2, characterized in that, The two side guide grooves (6) are provided with a side leakage prevention structure (8) on the outside. The side leakage prevention structure (8) is provided on the absorbent core (2) and includes multiple rows of first baffles (81) protruding from the surface layer (1). The first baffles (81) are composed of several first protrusion points (82) arranged at equal intervals. The first protrusion points (82) between adjacent first baffles (81) are staggered.
4. The highly conforming flexible sanitary napkin according to claim 3, characterized in that, A set of the anti-leakage structure (8) includes two rows of first baffles (81), the first baffles (81) having an arc adapted to the side guide groove (6).
5. A highly conforming flexible sanitary napkin according to claim 2, characterized in that, The bottom of the rear guide groove (7) is provided with a back leakage prevention structure (9). The back leakage prevention structure (9) is provided on the absorbent core (2) and includes multiple rows of second baffles (91) protruding from the surface layer (1). The second baffles (91) are composed of several second protrusion points (92) arranged at equal intervals. The second protrusion points (92) between adjacent second baffles (91) are staggered.
6. A highly conforming flexible sanitary napkin according to claim 5, characterized in that, The anti-leakage structure (9) includes three rows of second baffles (91), and the second baffles (91) are provided with an arc that is adapted to the bottom of the absorbent core (2).
7. A highly conforming flexible sanitary napkin according to claim 6, characterized in that, The second protruding point (92) is circular in shape, or the second protruding point (92) on the three rows of second baffles (91) of the anti-leakage structure (9) from top to bottom is circular, triangular and circular in shape, with one side of the triangle facing the first row of second baffles (91).
8. A highly conforming flexible sanitary napkin according to claim 2, characterized in that, The rear guide groove (7) extends along the length direction of the absorbent core (2), and an adhesive strip (10) protruding from the surface layer (1) is provided between the rear guide grooves (7). The cross-sectional area of the adhesive strip (10) gradually increases from top to bottom.
9. A highly conforming flexible sanitary napkin according to claim 1, characterized in that, The absorbent core (2) and the bottom film (3) are seamlessly bonded together.
10. A highly conforming flexible sanitary napkin according to claim 1, characterized in that, The back of the memory elastic side wing (4) is provided with a dot adhesive (11), and release paper is provided on the dot adhesive (11).