Suspended core sanitary napkin
By opening circular flow guide holes and arc-shaped holes in the absorbent core of the sanitary napkin and folding the surface layer to form a suspended edge, the problem of insufficient absorption speed of the existing sanitary napkins is solved, the breathability and comfort of the sanitary napkins are improved, and the user experience is improved.
Patent Information
- Application Number
- CN202420537082.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-19
AI Technical Summary
The penetration and absorption speed of existing sanitary napkins are insufficient, resulting in menstrual blood spreading on the surface of sanitary napkins and staying for a long time, which makes the user experience poor.
A suspended core sanitary napkin is designed, the surface layer is covered on the absorbent core and folded to form a suspended edge. The middle of the absorbent core is opened, multiple circular flow guide holes are provided at the front and arc holes are provided at the rear to improve the penetration effect and absorption speed.
By improving the penetration effect and absorption speed of the absorbent core, the breathability and comfort of the sanitary napkin are enhanced, the risks of lateral leakage and displacement are reduced, and the user experience is improved.
Smart Images
Figure CN222708570U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sanitary napkins, and more specifically relates to a suspended core sanitary napkin. Background Art
[0002] Existing sanitary napkins generally include a surface layer, a bottom film, and an absorbent core located between the surface layer and the bottom film. Due to the poor penetration and absorption speed of the surface layer and the absorbent core, menstrual blood spreads on the surface of the sanitary napkin and stays for a long time, resulting in poor user experience. In order to improve the absorption characteristics of sanitary napkins, wider and longer sanitary napkin bodies can only be used, but the increase in width and length will reduce the comfort and fit of the sanitary napkin, increase the risk of side leakage, and even increase the displacement of the sanitary napkin, causing inconvenience to the user. Utility Model Content
[0003] The utility model aims to provide a sanitary napkin with a suspended core, aiming to improve the penetration effect and absorption speed of the absorption core and improve the air permeability of the sanitary napkin.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a suspended core sanitary napkin, comprising: a base film, an absorbent core and a surface layer, wherein the surface layer covers the upper end of the absorbent core and the edge of the surface layer is bonded to the upper end surface of the base film, and both sides of the surface layer in the width direction are folded over to form a suspended edge; the middle part of the absorbent core has an open area, the front part of the open area is provided with a plurality of evenly distributed circular guide holes, and the rear part of the open area is provided with an arc-shaped hole with the opening direction facing backwards.
[0005] As another embodiment of the present application, the diameter of the circular guide hole is greater than the shortest distance between two adjacent circular guide holes.
[0006] As another embodiment of the present application, the difference between the width of the arc-shaped hole and the inner diameter of the circular guide hole is less than ±1 mm.
[0007] As another embodiment of the present application, the width of the open area of the absorbent core is less than 45 mm.
[0008] As another embodiment of the present application, the area of all openings in the absorbent core is 1 / 10-1 / 9 of the area of the absorbent core, and the flow area of the multiple circular guide holes in the opening area is smaller than the flow area of the arc holes in the opening area.
[0009] As another embodiment of the present application, the absorbent core includes a core body and side panels located on both sides of the core body, the side panels are wrapped around the sides of the core body and extend to the upper and lower sides of the core body; the two side panels have a first gap between the upper folded edges at the upper end of the core body, and the two side panels have a second gap between the lower folded edges at the lower end of the core body, and the width of the first gap is greater than the width of the second gap.
[0010] As another embodiment of the present application, the width of the lower folded edge of the side surround is greater than the width of the floating edge attached to the upper end of the base film, and the edge of the lower folded edge of the side surround is glued to the base film.
[0011] As another embodiment of the present application, the second gap between the two side panels is greater than the width of the open hole area of the absorbent core.
[0012] As another embodiment of the present application, the core body includes a water absorbing layer and a wrapping layer, wherein the wrapping layer covers the upper end of the water absorbing layer and both sides of the wrapping layer are folded downward along both sides of the water absorbing layer and are adhesively connected to the lower end surface of the water absorbing layer.
[0013] As another embodiment of the present application, a functional chip is provided on the upper end surface of the absorbent core, and the width of the functional chip is smaller than the width of the first gap between the two side circumferences.
[0014] The beneficial effects of the suspended core sanitary napkin provided by the utility model are as follows: compared with the prior art, the suspended core sanitary napkin of the utility model, on the basis of folding the surface layer to form a suspended edge, opens holes in the absorbent core, thereby further improving the air permeability and comfort of the sanitary napkin; in addition, a plurality of circular guide holes are opened in the front part of the middle opening area of the absorbent core, and the menstrual fluid is evenly distributed through the plurality of evenly distributed circular guide holes, and the penetration speed of the menstrual fluid is increased, thereby improving the air permeability; and the arc-shaped holes with the opening direction facing backwards can not only temporarily store the menstrual fluid to prevent back leakage, but also can improve the absorption uniformity and absorption efficiency of the absorbent core and ensure the liquid storage capacity of the absorbent core. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A front view of a suspended core sanitary napkin provided by an embodiment of the utility model;
[0017] Figure 2This is a schematic structural diagram of a suspended core sanitary napkin provided in an embodiment of the utility model.
[0018] In the figure: 1. circular guide hole; 2. arc hole; 3. cast film; 4. bottom non-woven fabric; 5. structural adhesive layer; 6. surface layer; 7. wrapping layer; 8. side wall; 9. water absorption layer; 10. functional chip. DETAILED DESCRIPTION
[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0020] See also Figure 1 and Figure 2 The suspended core sanitary napkin provided by the utility model is now described. The suspended core sanitary napkin comprises a base film, an absorbent core and a surface layer 6, wherein the surface layer 6 covers the upper end of the absorbent core and the edge of the surface layer 6 is bonded to the upper end surface of the base film, and both sides of the surface layer 6 in the width direction are folded to form a suspended edge; the absorbent core has an open area in the middle, and a plurality of evenly distributed circular guide holes 1 are opened in the front of the open area, and an arc-shaped hole 2 with an opening direction facing backward is opened in the rear of the open area.
[0021] On the basis of the surface layer 6 being folded in the width direction to form the suspended edge, the middle area of the absorbent core is an opening area, and the opening area is divided into the front half and the back half according to the position of the opening area and the distribution characteristics of the menstrual blood, wherein the front half of the opening area is provided with a plurality of evenly distributed circular guide holes 1, which can make the menstrual blood that is not absorbed by the absorbent core in time temporarily stored in the circular guide holes 1, and then penetrate into the absorbent core from the edge of the circular guide holes 1; and the back half needs to absorb the menstrual fluid and prevent the back leakage, so an arc hole 2 is provided at the back of the opening area, and in order to improve the degree of fit and the absorption effect, the opening of the arc hole 2 is set to face the back. When the menstrual fluid flows backward, it will be temporarily stored in the inner cavity of the arc hole 2 after passing through the arc hole 2, and will be blocked by the edge of the arc hole 2, thereby improving the absorption effect of the menstrual fluid, and at the same time reducing the menstrual fluid from the surface layer 6 or the surface layer of the absorbent core to flow backward, thereby reducing the side leakage. In addition, the opening is in an arc shape facing backwards, and the edge of the arc hole 2 on the rear side is an arc shape that bulges forward. After the menstrual fluid enters the arc hole 2 and is absorbed by the absorbent core, part of the menstrual fluid flows from the middle to both sides along the edge of the rear side of the arc hole 2 to avoid more menstrual fluid gathering in the middle of the arc hole 2, resulting in uneven absorption of the absorbent core, affecting the absorption efficiency and liquid storage capacity of the absorbent core.
[0022] Compared with the prior art, the suspended core sanitary napkin provided by the utility model has holes in the absorbent core on the basis of folding the surface layer 6 to form a suspended edge, thereby further improving the air permeability and comfort of the sanitary napkin; in addition, a plurality of circular guide holes 1 are opened in the front part of the middle opening area of the absorbent core, and the menstrual fluid is evenly distributed through the plurality of evenly distributed circular guide holes 1, and the penetration speed of the menstrual fluid is increased, thereby improving the air permeability; and the arc-shaped holes 2 with the opening direction facing backwards can not only temporarily store the menstrual fluid to prevent back leakage, but also improve the absorption uniformity and absorption efficiency of the absorbent core and ensure the liquid storage capacity of the absorbent core.
[0023] In some possible embodiments, see Figure 1 The circular guide holes 1 are arranged in an array, and two adjacent rows of circular guide holes 1 are arranged alternately. The diameter of the circular guide holes 1 is greater than the shortest distance between two adjacent circular guide holes 1 .
[0024] Optionally, the diameter of the circular guide holes 1 is 5 mm, and the shortest distance between two adjacent circular guide holes 1 is 4 mm.
[0025] Furthermore, the difference between the width of the arc hole 2 opened in the rear half of the opening area and the inner diameter of the circular guide hole 1 is less than ±1 mm; that is, when the diameter of the circular guide hole 1 is 5 mm, the width of the arc hole 2 is 4-6 mm.
[0026] The rear half of the opening area is provided with a plurality of arc holes 2 at intervals, and the length of the arc holes 2 gradually increases from front to back along the length direction of the opening area to improve the absorption effect of the absorbent core. Optionally, the rear half of the opening area is provided with three arc holes 2 at intervals, and the length difference between two adjacent arc holes 2 is 1-2 mm.
[0027] The width of the opening area of the absorbent core is greater than half of the width of the absorbent core and less than the width of the absorbent core. In order to ensure that the absorbent core has sufficient water absorption area and thus ensure the water absorption effect, the width of the opening area of the absorbent core is less than 45mm. There are non-punchable edge portions around the opening area, and the total opening area in the absorbent core is 1 / 10-1 / 9 of the area of the absorbent core. The sum of the flow areas of the multiple circular guide holes 1 in the opening area is smaller than the sum of the flow areas of the arc holes 2 in the opening area, but the area of the opening area occupied by the multiple circular guide holes 1 is larger than the area of the opening area occupied by the arc holes 2.
[0028] In some possible embodiments, see Figure 2The absorbent core includes a core body and side gussets 8 located on both sides of the core body, the side gussets 8 are wrapped around the sides of the core body and extend to the upper and lower sides of the core body; there is a first gap between the upper folded edges of the two side gussets 8 at the upper end of the core body, and there is a second gap between the lower folded edges of the two side gussets 8 at the lower end of the core body, and the width of the first gap is greater than the width of the second gap.
[0029] Side enclosures 8 are provided on both sides of the core body of the absorbent core, which wrap the core body to increase the thickness and water absorption capacity of the core body at the side, so that the part of the core body extending into the suspension edge has sufficient water absorption capacity to avoid side leakage.
[0030] The side gusset 8 only wraps around the two side edges of the core body, and its upper fold and lower fold are not connected, reducing the thickness of the middle part of the absorbent core, and forming a side leakage prevention structure on both sides of the absorbent core. The width of the lower fold of the side gusset 8 is greater than the width of the floating edge attached to the upper end of the bottom film, and the edge of the lower fold of the side gusset 8 is glued to the bottom film. After being folded, the lower fold extends toward the middle part of the absorbent core until it extends beyond the edge of the floating edge and is fixed to the bottom film.
[0031] Correspondingly, the second gap between the two side surrounds 8 is larger than the width of the opening area of the absorbent core, that is, the holes in the opening area are not opened to the side surrounds 8.
[0032] Optionally, when the upper end surface of the absorbent core is provided with a functional chip 10, the width of the functional chip 10 is smaller than the width of the first gap between the two side circumferences 8. The functional chip 10 is located above the absorbent core and is adhesively connected to the surface layer 6. The functional chip 10 can be a chip treated with activated carbon, silver ions, etc.; the chip is located in the middle of the absorbent core.
[0033] In some possible embodiments, see Figure 2 The core body includes a water absorbing layer 9 and a wrapping layer 7, wherein the wrapping layer 7 covers the upper end of the water absorbing layer 9 and both sides of the wrapping layer 7 are folded downward along both sides of the water absorbing layer 9 and are adhesively connected to the lower end surface of the water absorbing layer 9.
[0034] The absorbent layer 9 is made of absorbent paper, and the wrapping layer 7 is made of non-woven fabric. The wrapping layer 7 wraps the absorbent paper and folds both side edges of the wrapping layer 7 downward to overlap, and then is glued to the lower end surface of the absorbent layer 9 after overlapping.
[0035] The upper end of the wrapping layer 7 is connected to the surface layer 6 by means of a structural adhesive. The surface layer 6 is made of non-woven fabric to ensure the comfort and breathability of the surface layer 6. The base film is made of a bottom non-woven fabric 4 and a cast film 3 by gluing or pressing. A structural adhesive layer 5 is provided on the upper end of the base film, and the floating edge of the surface layer 6 is folded and bonded to the structural adhesive layer 5.
[0036] Optionally, both sides of the surface layer 6 are embossed.
[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A suspended core sanitary napkin, characterized in that: The invention comprises a base film, an absorbent core and a surface layer (6), wherein the surface layer (6) covers the upper end of the absorbent core and the edge of the surface layer (6) is bonded to the upper end surface of the base film, and both sides of the surface layer (6) in the width direction are folded over to form floating edges; the middle part of the absorbent core has an open area, the front part of the open area is provided with a plurality of evenly distributed circular guide holes (1), and the rear part of the open area is provided with an arc-shaped hole (2) with its opening direction facing backwards.
2. The suspended core sanitary napkin according to claim 1, characterized in that: The diameter of the circular flow guide holes (1) is greater than the shortest distance between two adjacent circular flow guide holes (1).
3. The suspended core sanitary napkin according to claim 1, characterized in that: The difference between the width of the arc-shaped hole (2) and the inner diameter of the circular guide hole (1) is less than ±1 mm.
4. The suspended core sanitary napkin according to claim 1, characterized in that: The width of the open area of the absorbent core is less than 45 mm.
5. The suspended core sanitary napkin according to claim 1, characterized in that: The area of all openings in the absorbent core is 1 / 10-1 / 9 of the area of the absorbent core, and the flow area of the plurality of circular guide holes (1) in the opening area is smaller than the flow area of the arc-shaped holes (2) in the opening area.
6. The suspended core sanitary napkin according to claim 1, characterized in that: The absorbent core comprises a core body and side gussets (8) located on both sides of the core body, wherein the side gussets (8) are wrapped around the side edges of the core body and extend to the upper and lower sides of the core body; a first gap is formed between the upper folded edges of the two side gussets (8) located at the upper end of the core body, and a second gap is formed between the lower folded edges of the two side gussets (8) located at the lower end of the core body, and the width of the first gap is greater than the width of the second gap.
7. The suspended core sanitary napkin according to claim 6, characterized in that: The width of the lower folded edge of the side surround (8) is greater than the width of the floating edge attached to the upper end of the base film, and the edge of the lower folded edge of the side surround (8) is glued to the base film.
8. The suspended core sanitary napkin according to claim 7, characterized in that: The second gap between the two side circumferences (8) is greater than the width of the open area of the absorbent core.
9. The suspended core sanitary napkin according to claim 6, characterized in that: The core body comprises a water absorbing layer (9) and a wrapping layer (7), wherein the wrapping layer (7) covers the upper end of the water absorbing layer (9) and both sides of the wrapping layer (7) are folded downward along both sides of the water absorbing layer (9) and are adhesively connected to the lower end surface of the water absorbing layer (9).
10. The suspended core sanitary napkin according to claim 6, characterized in that: The upper end surface of the absorbent core is provided with a functional chip (10), and the width of the functional chip (10) is smaller than the width of the first gap between the two side circumferences (8).