Breathable sanitary towel capable of preventing side leakage

Abstract

The utility model discloses a breathable side leakage prevention sanitary towel, which comprises a surface layer, a liquid flow guide layer and an absorption layer which are sequentially spliced from top to bottom, a three-piece type towel body partially wraps two sides of the surface layer, two sides of the liquid flow guide layer and two sides of the absorption layer, and the three-piece type towel body is connected with a breathable bottom film provided with three-piece type wings. The breathable bottom film is located on the lower portion of the absorption layer, the absorption layer comprises an upper core wrapping layer, a core layer, a core flow guide layer and a lower core wrapping layer which are sequentially connected in an overlapped mode from top to bottom, and a liquid passing groove is formed in the center of the core layer. The liquid passing groove is matched with the core body flow guide layer, the function of instantaneous absorption flow guide can be achieved, the air permeability of the towel body can be improved, the transverse width of the position, corresponding to the three-piece type protection wing, of the middle of the absorption layer is larger than that of the two ends of the absorption layer, rapid absorption can be achieved, and side leakage is prevented. The sanitary towel solves the problem of side leakage caused by extrusion in the using process, and is good in ventilation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary napkins, in particular to a breathable and anti-side leakage sanitary napkin. Background Art

[0002] A sanitary napkin is a sanitary product used by women during menstruation. With the continuous improvement of people's living standards, modern women have higher and higher pursuits for disposable sanitary products, and safety and comfort are the most basic and important influencing factors in choosing products.

[0003] During use, a sanitary napkin is easily squeezed by the inner thigh root of the human body, resulting in a situation where the middle of the napkin body is high and both sides are low. The raised middle part of the squeezed sanitary napkin always tightly fits the position of the menstrual fluid outlet of the human body, aggravating the stuffiness and foreign body sensation. Surveys have shown that a certain proportion of women will experience local skin itching and burning pain during menstruation, which is mostly due to the long absorption time of the core body and poor diversion effect, resulting in liquid accumulation, causing long-term dampness and poor breathability. The deformation caused by the squeezing of the napkin body will not only affect the breathability during use, but also cause slippage and leakage on both sides of the napkin body, bringing physical and psychological troubles and inconveniences to users. Content of the Utility Model

[0004] The purpose of the utility model is to provide a breathable and anti-side leakage sanitary napkin aiming at the deficiencies of the prior art. This kind of sanitary napkin solves the problem of side leakage caused by squeezing during use and has good breathability.

[0005] The technical solution to achieve the purpose of the utility model is as follows:

[0006] A breathable and anti-side leakage sanitary napkin, which includes a surface layer, a liquid-passing and guiding layer, and an absorption layer stacked in sequence from top to bottom. The three-piece napkin body partially wraps the two sides of the surface layer, the liquid-passing and guiding layer, and the absorption layer. The three-piece napkin body is connected to a breathable bottom film provided with three-piece wings. The breathable bottom film is located below the absorption layer. Among them, the absorption layer includes a core upper wrapping layer, a core layer, a core guiding layer, and a core lower wrapping layer stacked in sequence from top to bottom. A liquid-passing groove is provided at the center of the core layer.

[0007] The liquid-passing groove is trapezoidal in reverse. The long side length of the top surface of the liquid-passing groove is 80 - 100 mm, and the short side length is 15 - 20 mm. The long side length of the bottom surface of the liquid-passing groove is 70 - 90 mm, and the short side length is 5 - 10 mm. The length direction of the liquid-passing groove is the same as the length direction of the core layer. A chamfer is provided on the top surface of the liquid-passing groove to make its slope transition more gentle, reducing the step drop feeling during contact use and improving the use comfort. The liquid-passing groove and the core guiding layer cooperate with each other to achieve the function of instant absorption and diversion.

[0008] The overlapping area between the absorption layer and the three-piece napkin body accounts for 1 / 5 - 1 / 4 of the area of the three-piece wings.

[0009] On both sides of the middle part of the absorption layer, there are protrusions extending outwards. The width of the protrusions is 5 - 12 mm, and the length is 60 - 120 mm.

[0010] The absorption layer is provided with core pressing points at intervals. The longitudinal distance between the core pressing points is 2 - 3 mm, the vertical distance between the core pressing points is 2 - 3 mm, and the horizontal distance between the core pressing points is 5 - 10 mm. The pattern of the core pressing points can be circular, square, or other special-shaped figures. The core pressing points can make the longitudinal flow rate of the whole core faster and the diffusion longer, which is beneficial to solving the problem that the liquid is concentrated in the middle of the core, improving the utilization rate of the core, and reducing the sense of dampness during use.

[0011] The core diversion layer is a porous sponge, foam, woven material, etc. The thickness of the material of the core diversion layer is 1.5 - 3 mm, which can not only ensure the stability of the material structure but also quickly divert the liquid to the lower layer and then quickly diffuse it in the front and back directions when a large amount of liquid surges in, and can further absorb the evenly distributed liquid to ensure the dryness of the towel body.

[0012] The upper wrapping layer and the lower wrapping layer of the core are one of the liquid-permeable non-woven fabrics, which can be spunbond non-woven fabric, hot air non-woven fabric, spunlace fabric, etc., or liquid-permeable non-woven fabrics added with other materials and having other functions.

[0013] The three-piece towel body is a weakly repellent non-woven fabric, and the gram weight range is 10 - 25 gsm. The three-piece towel body plays a role in strengthening and preventing side leakage.

[0014] The three-piece wing is an impermeable non-woven fabric, and the material gram weight range is 10 - 25 gsm, which plays a role in preventing liquid from leaking to the bottom layer.

[0015] The cotton collecting drum for core demolding of the core layer. The length dimension of a single module is 200 - 300 mm, and the width dimension is 150 - 200 mm. The mesh number range of the cotton collecting net on the cotton collecting drum is 30 - 60 meshes. The power range of the blower for absorbing wood pulp inside the cotton collecting drum during operation is 40 - 65 kw, which makes the cotton core better coagulate and form, and more evenly cover on a single cotton core module to achieve better density, facilitating the core to better absorb and divert liquid and improving the dryness performance of the product.

[0016] The air inside the towel body can pass through the breathable micropores on the breathable bottom film, that is, the function of being breathable but not permeable to water realizes the replacement of internal and external air, ensuring that there is no leakage risk during the use of the towel body while improving the breathability of the whole towel body.

[0017] In the case of no liquid, due to the hollow design, the liquid passing groove can also play a role in maintaining the air layer and promoting air circulation, which can improve the breathability of the towel body.

[0018] The preparation of a breathable and leak-proof sanitary napkin comprises the following steps:

[0019] 1): Prepare the absorption layer: sequentially bond the core upper wrapping layer, the core layer, the core guide layer and the core lower wrapping layer arranged from top to bottom to obtain the absorption layer;

[0020] 2): The surface layer, the liquid conduction layer and the absorption layer obtained in step 1) are sequentially bonded from top to bottom;

[0021] 3): The left and right sides of the product bonded in step 2) are bonded and covered with a three-piece towel from top to bottom;

[0022] 4): Glue the three-piece wing to the left and right sides of the breathable bottom film surface;

[0023] 5): The adhesive product obtained in step 3) is bonded to the breathable base film in step 4), and is cut by a knife roller device to obtain the breathable and side leakage-proof sanitary napkin.

[0024] Compared with the prior art, this technical solution has the following beneficial effects:

[0025] The core layer provided by the utility model is provided with a liquid groove at the central position corresponding to the position where the menstrual blood of the human body is discharged, and a core guide layer is added to the surface layer below the liquid groove. When the product is used, although the towel body is close to the skin and deforms with the human body structure, the central absorption area of ​​the core layer has enough space for the liquid to quickly penetrate into the core guide layer, and then the core guide layer is used for diversion and dispersion absorption. In the absence of liquid, it can also maintain the air layer and promote air circulation. With the breathable bottom film, the air permeability of the towel body can be greatly improved;

[0026] On the other hand, the width of the core layer provided by the utility model on both sides of the center of the core body at the position of the three-piece wings is wider than the lateral width position of the front and rear ends of the core body. In this way, the product can be higher in the middle and lower on both sides due to being squeezed and deformed by fitting the human body. When most of the menstrual blood is discharged from the vaginal opening and concentrated in the middle, the liquid in the middle accumulates and the core body has no time to absorb it, this part of the menstrual blood will flow to the left and right sides. When the liquid slides from the high place to the low areas on both sides of the three-piece wings, the two sides of the core layer can be quickly absorbed to prevent side leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic plan view of the overall structure of the sanitary napkin in the embodiment;

[0028] Figure 2 This is a schematic diagram of the transverse cross-section structure of a sanitary napkin in an embodiment;

[0029] Figure 3 This is a schematic diagram of the plane graphic of the core layer in Example 2;

[0030] Figure 4 Schematic diagram of the planar pattern of the core layer in Example 3;

[0031] Figure 5 Schematic diagram of the planar view of the absorbent layer in Example 4;

[0032] Figure 6 Schematic diagram of the transverse sectional structure of the sanitary napkin in Example 4.

[0033] In the figure: 1. Sanitary napkin; 2. Surface layer; 3. Liquid-conducting diversion layer; 4. Absorbent layer; 5. Core body diversion layer; 6. Breathable bottom film; 7. Three-piece sanitary napkin body; 8. Three-piece wing; 9. Upper wrapping layer of the core body; 10. Lower wrapping layer of the core body; 11. Core layer; 12. Liquid-conducting groove; 13. Core body pressing point; 14. Protrusion. Specific implementation manners

[0034] The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it is not a limitation to the present utility model. Example 1

[0035] Referring to FIGS. 1-2, a breathable and anti-side leakage sanitary napkin, the sanitary napkin 1 includes a surface layer 2, a liquid-conducting diversion layer 3 and an absorbent layer 4 which are sequentially stacked from top to bottom. The three-piece sanitary napkin body 7 partially clamps and wraps the two sides of the surface layer 2, the liquid-conducting diversion layer 3 and the absorbent layer 4. The three-piece sanitary napkin body 7 is a weakly repellent non-woven fabric with a grammage of 20 gsm. The three-piece sanitary napkin body 7 is connected to a breathable bottom film 6 provided with a three-piece wing 8. The breathable bottom film 6 is located below the absorbent layer 4. The three-piece wing 8 is an impermeable non-woven fabric with a grammage of 22 gsm. The area of the overlapping part of the absorbent layer 4 and the three-piece sanitary napkin body 7 accounts for 1 / 5 of the area of the wing. The absorbent layer 4 includes an upper wrapping layer 9 of the core body, a core layer 11, a core body diversion layer 5 and a lower wrapping layer 10 of the core body which are sequentially stacked from top to bottom. The upper wrapping layer 9 of the core body and the lower wrapping layer 10 of the core body are made of liquid-permeable non-woven fabric. The core body diversion layer 5 is a sponge with a thickness of 1.5 mm. A liquid-conducting groove 12 is provided at the center of the core layer 11. The liquid-conducting groove 12 is trapezoidal in shape, the long side length of the top surface of the liquid-conducting groove 12 is 100 mm, the short side length is 20 mm, the long side length of the bottom surface of the liquid-conducting groove is 80 mm, the short side length is 10 mm. The length direction of the liquid-conducting groove 12 is consistent with the length direction of the core layer. A chamfer is provided on the top surface of the liquid-conducting groove 12. Long strip arc-shaped protrusions 14 extending outward are provided in the middle of both sides of the absorbent layer 4. The width of the protrusion 14 is 10 mm and the length is 100 mm.

[0036] When there is liquid passing through the surface layer 2, the liquid-conducting diversion layer 3 quickly diverts the liquid, and then when it seeps down to the core layer 11, the liquid-conducting groove 12 and the core body diversion layer 5 provided on the lower surface of the core layer 11 cooperate with each other to achieve the function of instant absorption and diversion. Example 2

[0037] For the sanitary napkin in Example 1, the three-piece napkin body 7 is removed, and the three-piece wing 8 is directly connected to both sides of the surface layer and then laminated together with the breathable bottom film 6. Example 3

[0038] As Figure 3 shown, for the sanitary napkin in Example 1, the protrusions 14 on both sides of the middle part of the absorbent layer 4 are in a semi-circular arc shape on both sides, which can better fit the human physiological structure during product use, reduce the foreign body sensation during product use at the turning points of the front and rear wings, and also play a role in absorbing and preventing side leakage. Example 4

[0039] As Figure 4 shown, for the sanitary napkin in Example 1, the protrusions 14 on both sides of the middle part of the absorbent layer 4 are composed of small-arc shapes with upper and lower small arcs gradually transitioning to a large-arc shape in the middle area, and a small-arc turn is added at the corner of the three-piece wing 8 to increase the absorption area on both sides of the front and rear of the three-piece wing 8. Example 5

[0040] As Figures 5-6 shown, for the sanitary napkin in Example 1, the absorbent layer 4 includes a core upper wrapping layer 9, a core layer 11, a core lower wrapping layer 10, and a core diversion layer 5 that are sequentially stacked from top to bottom. The absorbent layer 4 is provided with circular core pressing points 13 at intervals as a whole. The vertical spacing of the core pressing points 13 is 3 mm, and the horizontal spacing of the core pressing points 13 is 10 mm.

Claims

1. A breathable and side leakage-proof sanitary napkin, characterized in that: The side leakage prevention sanitary napkin comprises a surface layer, a liquid permeable diversion layer and an absorption layer which are stacked in sequence from top to bottom, a three-piece towel body partially wraps around the surface layer, the liquid permeable diversion layer and both sides of the absorption layer, the three-piece towel body is connected to a breathable bottom film with three-piece wings, the breathable bottom film is located at the lower part of the absorption layer, wherein the absorption layer comprises a core upper wrapping layer, a core layer, a core diversion layer and a core lower wrapping layer which are stacked in sequence from top to bottom, and a liquid permeable groove is provided at the center of the core layer.

2. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The liquid-passing groove is in an inverted trapezoidal shape, with the long side of the top surface of the liquid-passing groove being 80-100 mm and the short side being 15-20 mm, the long side of the bottom surface of the liquid-passing groove being 70-90 mm and the short side being 5-10 mm, the length direction of the liquid-passing groove being consistent with the length direction of the core layer, and a chamfer being provided on the top surface of the liquid-passing groove.

3. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The area where the absorption layer and the three-piece towel body overlap accounts for 1 / 5 to 1 / 4 of the area of ​​the three-piece wing.

4. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The middle parts of both sides of the absorption layer are provided with outwardly extending protrusions, and the width of the protrusions is 5-12mm and the length is 60-120mm.

5. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The core pressure points are arranged at intervals on the absorption layer, the vertical spacing of the core pressure points is 2 to 3 mm, and the horizontal spacing of the core pressure points is 5 to 10 mm.

6. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The core body flow-guiding layer is a loose and porous sponge or foam or woven material, the thickness of the core body flow-guiding layer is 1.5-3 mm, and the core body upper wrapping layer and the core body lower wrapping layer are liquid-permeable non-woven fabrics.

7. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The three-piece towel body is made of weak repellent non-woven fabric with a grammage range of 10 to 25 gsm, and the wings are made of liquid-impermeable non-woven fabric with a grammage range of 10 to 25 gsm.

8. The breathable side leakage-proof sanitary napkin according to claim 1, characterized in that: The absorption layer comprises a core upper wrapping layer, a core layer, a core lower wrapping layer and a core guiding layer which are stacked in sequence from top to bottom, wherein a liquid passage groove is arranged at the center of the core layer.

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