Liquid sanitary napkin

Abstract

The utility model provides a liquid sanitary napkin, which belongs to the technical field of sanitary napkins and comprises a bottom film, a core body and a surface layer, and the edge of the surface layer is adhered to the edge of the bottom film. The core body is positioned in a cavity between the bottom film and the surface layer; the core body comprises a flow guide layer, a liquid material layer and a liquid absorption layer which are sequentially arranged from top to bottom, and a plurality of flow guide holes are formed in the liquid material layer at intervals in the length direction; and the liquid absorption layer covers all the flow guide holes. According to the liquid sanitary towel, the flow guide holes are formed in the liquid material layer, so that the flow guide area and the absorption area of the liquid material layer are increased, and the absorption speed is increased; the liquid absorption layer is additionally arranged at the bottom of the flow guide hole, so that liquid in the flow guide hole can be rapidly absorbed by the liquid material layer and the liquid absorption layer, the liquid storage effect is improved, and reverse osmosis of the core body is reduced; the flow guide layer is additionally arranged at the upper end of the liquid material layer, so that the flow guide effect is improved, the permeation area is increased, and reverse osmosis is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sanitary napkins, and more specifically, relates to a liquid sanitary napkin. Background Art

[0002] Sanitary napkins mainly absorb liquids through cotton pulp and absorbent core. The surface and core of the sanitary napkin are in direct contact with the human body to absorb body fluids.

[0003] The core of the existing sanitary napkin has a limited absorption speed, so that menstrual blood spreads on the surface of the sanitary napkin and stays for a long time. The sanitary napkin has poor liquid storage effect and comfort. The absorption core is prone to reverse osmosis and leakage when squeezed. Utility Model Content

[0004] The utility model aims to provide a liquid sanitary napkin, aiming to improve the absorption speed and liquid storage effect of the sanitary napkin and reduce the reverse osmosis of the core body.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a liquid sanitary napkin, including a base film, a core body and a surface layer, the edge of the surface layer is bonded to the edge of the base film; the core body is located in a cavity between the base film and the surface layer; the core body includes a guide layer, a liquid material layer and a liquid absorption layer arranged in sequence from top to bottom, and the liquid material layer is provided with a plurality of guide holes spaced apart along its length direction; the liquid absorption layer covers all the guide holes.

[0006] As another embodiment of the present application, the plurality of guide holes are evenly distributed along the length direction of the liquid material layer, and a distance between two adjacent guide holes is 3-5 times the width of the guide holes.

[0007] As another embodiment of the present application, the number of the guide holes is 6-8.

[0008] As another embodiment of the present application, the liquid material layer includes a central area and extended areas located on both sides of the central area, and the plurality of guide holes are symmetrically distributed in the extended areas.

[0009] As another embodiment of the present application, the cross-section of the guide hole is arc-shaped or rectangular.

[0010] As another embodiment of the present application, the surface layer is wrapped around the outside of the core body and extends to the bottom of the core body, and both side edges of the surface layer are connected to the base film by means of strip-shaped adhesive portions, and the distance between the two adhesive portions is smaller than the width of the core body.

[0011] As another embodiment of the present application, the liquid absorbing layer is located between the two bonding parts, and the length of the liquid absorbing layer is smaller than the length of the liquid material layer.

[0012] As another embodiment of the present application, three-dimensional protective layers are symmetrically provided on both sides above the core body, and the two three-dimensional protective layers are both bonded to the upper end surface of the surface layer; and a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers.

[0013] As another embodiment of the present application, the three-dimensional protective layer has an outward folded portion above the core body, and the elastic rope is located in the folded portion.

[0014] As another embodiment of the present application, there are three elastic ropes, and the distance between two adjacent elastic ropes near the free end of the three-dimensional protective layer is smaller than the distance between two adjacent elastic ropes near the fixed end of the three-dimensional protective layer.

[0015] The beneficial effects of the liquid sanitary napkin provided by the utility model are as follows: compared with the prior art, the liquid sanitary napkin of the utility model has a plurality of guide holes in the liquid material layer to increase the guide area and the absorption area of ​​the liquid material layer, thereby improving the absorption speed; a liquid absorption layer is added at the bottom of the guide holes so that the liquid in the guide holes can be quickly absorbed by the liquid material layer and the liquid absorption layer, thereby increasing the liquid storage effect while improving the absorption speed and reducing the reverse osmosis of the core; in addition, a guide layer is added at the upper end of the liquid material layer, which not only improves the guide effect and increases the penetration area, but also prevents the liquid from flowing back to a certain extent and reduces the reverse osmosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 A front view of a liquid sanitary napkin provided in the first embodiment of the utility model;

[0018] Figure 2 A front view of a liquid material layer provided in the first embodiment of the utility model;

[0019] Figure 3 A partial cross-sectional view of a core provided in the first embodiment of the utility model;

[0020] Figure 4 A transverse cross-sectional view of a liquid sanitary napkin provided in a second embodiment of the utility model;

[0021] Figure 5 This is a transverse cross-sectional view of a liquid sanitary napkin provided in the third embodiment of the utility model.

[0022] In the figure: 1. surface layer; 2. anti-side leakage edge protection; 3. liquid material layer; 4. diversion holes; 5. diversion layer; 6. liquid absorption layer; 7. bottom film; 8. three-dimensional protective layer. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 5 The liquid sanitary napkin provided by the utility model is now described. The liquid sanitary napkin comprises a bottom film 7, a core body and a surface layer 1, the edge of the surface layer 1 is bonded to the edge of the bottom film 7; the core body is located in the cavity between the bottom film 7 and the surface layer 1; the core body comprises a guide layer 5, a liquid material layer 3 and a liquid absorption layer 6 arranged in sequence from top to bottom, the liquid material layer 3 is provided with a plurality of guide holes 4 spaced apart along its length direction; the liquid absorption layer 6 covers all the guide holes 4.

[0025] Compared with the prior art, the liquid sanitary napkin provided by the utility model has a plurality of guide holes 4 in the liquid material layer 3 to increase the guide area and the absorption area of ​​the liquid material layer 3, thereby improving the absorption speed; a liquid absorption layer 6 is added at the bottom of the guide holes 4, so that the liquid in the guide holes 4 can be quickly absorbed by the liquid material layer 3 and the liquid absorption layer 6, thereby increasing the liquid storage effect while improving the absorption speed and reducing the reverse osmosis of the core; in addition, the guide layer 5 is added at the upper end of the liquid material layer 3, which not only improves the guide effect and increases the penetration area, but also prevents the liquid from flowing back to a certain extent and reduces the reverse osmosis.

[0026] The bottom film 7 is made of non-woven fabric or cast film material, and a glue layer is coated on the lower end. The surface layer 1 and the guide layer 5 can be made of non-woven fabric. The liquid material layer 3 is made of liquid material, and its cotton fiber is a porous form similar to our memory foam. The liquid absorption layer 6 is made of absorbent paper and other materials.

[0027] After the edges of the bottom film 7 and the surface layer 1 are bonded, an inner cavity is formed in the middle, and the core is confined in the inner cavity. The liquid penetrates into the core through the surface layer 1, and enters the liquid material layer 3 and the liquid absorbing layer 6 through the guide layer 5 on the upper part of the core. A part of the liquid is directly absorbed by the liquid material layer 3, and the other part flows into the guide hole 4 of the liquid material layer 3, and then is absorbed by the side wall of the guide hole 4 and the liquid absorbing layer 6 below it, thereby improving the liquid storage effect and absorption efficiency.

[0028] Optionally, anti-side leakage guard edges 2 are provided on both sides of the core body.

[0029] In some possible embodiments, see Figure 2The plurality of guide holes 4 are evenly distributed along the length direction of the liquid material layer 3 , and the interval between two adjacent guide holes 4 is 3-5 times the width of the guide holes 4 .

[0030] The flow guide holes 4 are opened along the width direction of the liquid material layer 3, and completely penetrate the liquid material layer 3 in the thickness direction of the liquid material layer 3. The cross section of the flow guide holes 4 is arc-shaped or rectangular, and in order to improve the liquid absorption effect of the ends of the flow guide holes 4 and avoid residual liquid, the two ends of the flow guide holes 4 are arc-shaped. When the cross section of the flow guide holes 4 is arc-shaped, the arc-shaped opening ends of the flow guide holes 4 face the middle of the liquid material layer 3, and the flow guide holes 4 located in the liquid material layer 3 are symmetrically arranged in pairs.

[0031] The length direction of the flow guide hole 4 is consistent with the width direction of the liquid material layer 3, and the length of the flow guide hole 4 is one-half to two-thirds of the width of the liquid material layer 3. Optionally, the length of the flow guide hole 4 gradually decreases from the two ends of the liquid material layer 3 toward the middle, that is, the length of the flow guide hole 4 located at the two ends of the liquid material layer 3 is the longest, the length of the flow guide hole 4 located in the middle of the liquid material layer 3 is the shortest, and the lengths of the multiple flow guide holes 4 located between the two are arranged in a stepped decreasing manner.

[0032] The width direction of the guide hole 4 is consistent with the length direction of the liquid material layer 3, and the width of the guide hole 4 is 4mm-6mm, preferably 5mm. Multiple guide holes 4 are arranged in parallel, and the distance between two adjacent guide holes 4 is 3-5 times the width of the guide hole 4, so as to ensure that the amount of liquid in the guide hole 4 can be absorbed in time. Specifically, according to the length of the liquid material layer 3, 6-8 guide holes 4 are provided.

[0033] The area of ​​the liquid absorbing layer 6 is smaller than or equal to the area of ​​the liquid material layer 3 .

[0034] like Figure 2 As shown, the liquid material layer 3 includes a central area and extended areas located on both sides of the central area, and a plurality of guide holes 4 are symmetrically distributed in the extended areas.

[0035] In some possible embodiments, see Figure 2 , Figure 3 and Figure 4 The surface layer 1 is wrapped around the outside of the core and extends to the bottom of the core. The edges of both sides of the surface layer 1 are connected to the bottom film 7 by means of strip-shaped adhesive portions, and the distance between the two adhesive portions is less than the width of the core.

[0036] The connection track between the surface layer 1 and the bottom film 7 is an I-shape, and the edges of both sides of the surface layer 1 protrude outside the bonding part, and cooperate with the bottom film 7 to form a suspended structure, which increases the liquid absorption area of ​​the surface layer 1. In addition, the edge of the suspended structure can more effectively fit the skin, ensuring the comfort of the sanitary napkin; and increasing the breathability of the sanitary napkin.

[0037] Optionally, the liquid absorbent layer 6 is located between the two bonding portions, and the length of the liquid absorbent layer 6 is less than the length of the liquid material layer 3. The length of the liquid absorbent layer 6 is less than the length of the liquid material layer 3, the width of the liquid absorbent layer 6 is less than the width of the liquid material layer 3, and the liquid absorbent layer 6 is only used to cover all the guide holes 4.

[0038] In some possible embodiments, see Figure 5 Three-dimensional protective layers 8 are symmetrically arranged on both sides above the core body, and the two three-dimensional protective layers 8 are both bonded to the upper end surface of the surface layer 1; a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers 8.

[0039] The three-dimensional protective layer 8 forms a three-dimensional shielding structure on the upper end surface of the surface layer 1 by means of elastic ropes. The three-dimensional protective layer 8 protects the liquid in the core and on the surface layer 1 to prevent side leakage.

[0040] The three-dimensional protective layer 8 has an outward folding portion above the core, and the elastic rope is located in the folding portion. Specifically, the three-dimensional protective layer 8 is bonded to the upper end surface of the surface layer 1, and its free end faces the center of the core. The three-dimensional protective layer 8 is folded upward and outward in the middle position, folded above the fixed side portion; the folded portion to the top is the folding portion, and the elastic rope is installed in the folding portion, and the folding portion is unfolded when in use. Under the action of the elastic rope, the three-dimensional protective layer 8 is unfolded at the upper end of the surface layer 1, and a three-dimensional shielding structure is formed.

[0041] Specifically, there are three elastic ropes arranged on the folding portion, and the distance between two adjacent elastic ropes near the free end of the three-dimensional protective layer 8 is smaller than the distance between two adjacent elastic ropes near the fixed end of the three-dimensional protective layer 8. The three elastic ropes are the first elastic rope, the second elastic rope and the third elastic rope from one side of the fixed end toward the side of the free end. The first elastic rope is located at the inner edge of the folding portion, that is, the position where the three-dimensional protective layer 8 is folded upward; the third elastic rope is located at the edge of the free end of the three-dimensional protective layer 8; and the second elastic rope is located between the first elastic rope and the third elastic rope. The distance between the first elastic rope and the second elastic rope is greater than the distance between the second elastic rope and the third elastic rope. Preferably, the distance between the first elastic rope and the second elastic rope is 10 mm, and the distance between the second elastic rope and the third elastic rope is 5 mm.

[0042] 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 liquid sanitary napkin, characterized in that: The invention comprises a base film (7), a core and a surface layer (1), wherein the edge of the surface layer (1) is bonded to the edge of the base film (7); the core is located in a cavity between the base film (7) and the surface layer (1); the core comprises a flow guide layer (5), a liquid material layer (3) and a liquid absorption layer (6) arranged in sequence from top to bottom, wherein the liquid material layer (3) is provided with a plurality of flow guide holes (4) spaced apart along its length direction; and the liquid absorption layer (6) covers all the flow guide holes (4).

2. The liquid sanitary napkin according to claim 1, characterized in that: The plurality of guide holes (4) are evenly distributed along the length direction of the liquid material layer (3), and the distance between two adjacent guide holes (4) is 3 to 5 times the width of the guide hole (4).

3. The liquid sanitary napkin according to claim 2, characterized in that: The number of the guide holes (4) is 6 to 8.

4. The liquid sanitary napkin according to claim 1, characterized in that: The liquid material layer (3) comprises a central area and extension areas located on both sides of the central area, and a plurality of guide holes (4) are symmetrically distributed in the extension areas.

5. The liquid sanitary napkin according to any one of claims 1 to 4, characterized in that: The cross section of the guide hole (4) is arc-shaped or rectangular.

6. The liquid sanitary napkin according to claim 1, characterized in that: The surface layer (1) is wrapped around the outside of the core and extends to the bottom of the core. The two side edges of the surface layer (1) are connected to the base film (7) by means of strip-shaped adhesive portions, and the distance between the two adhesive portions is less than the width of the core.

7. The liquid sanitary napkin according to claim 6, characterized in that: The liquid absorbing layer (6) is located between the two bonding parts, and the length of the liquid absorbing layer (6) is shorter than the length of the liquid material layer (3).

8. The liquid sanitary napkin according to claim 1, characterized in that: Three-dimensional protective layers (8) are symmetrically arranged on both sides above the core body, and the two three-dimensional protective layers (8) are both bonded to the upper end surface of the surface layer (1); and a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers (8).

9. The liquid sanitary napkin according to claim 8, characterized in that: The three-dimensional protective layer (8) has an outward folded portion above the core body, and the elastic rope is located in the folded portion.

10. The liquid sanitary napkin according to claim 9, characterized in that: There are three elastic ropes, and the distance between two adjacent elastic ropes near the free end of the three-dimensional protective layer (8) is smaller than the distance between two adjacent elastic ropes near the fixed end of the three-dimensional protective layer (8).

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