Liquid-absorbent breathable sanitary napkin

Abstract

The utility model provides a liquid-absorbing and breathable sanitary napkin, which belongs to the technical field of sanitary napkins, and includes a non-woven fabric surface layer, a water-absorbing core, a liquid storage core, and a non-woven fabric bottom layer arranged in sequence from top to bottom; the liquid storage core includes a first liquid storage waterproof layer and a second liquid storage waterproof layer, the first liquid storage waterproof layer includes a first non-woven fabric liquid storage layer and a first melt-blown fabric liquid storage layer; the second liquid storage waterproof layer includes a second non-woven fabric liquid storage layer or a second melt-blown fabric liquid storage layer; both sides of the non-woven fabric surface layer are provided with anti-seepage edges, and the fixed ends of the anti-seepage edges are fixed between the non-woven fabric surface layer and the non-woven fabric bottom layer. The liquid-absorbing and breathable sanitary napkin provided by the utility model forms a three-layer liquid storage anti-seepage structure by cooperating with the liquid storage core and the non-woven fabric bottom layer, thereby achieving the air permeability and anti-seepage requirements of the non-woven fabric bottom layer; in addition, the anti-seepage edges are provided on both sides to avoid side leakage while ensuring the air permeability of the sanitary napkin, and prevent liquid from seeping out from both sides of the liquid storage core.

Description

Technical Field

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

[0002] Currently, commonly used sanitary napkins have a multi-layer structure: a breathable top layer, an impermeable bottom layer, and a middle absorbent layer with strong water absorption capacity. The bottom layer is generally made of PE cast film, which can prevent water from permeating the bottom layer. However, PE cast film has poor air permeability. Even some brands of breathable ground films are just embossed with patterns and some very small micropores on the PE film. In fact, it is just a concept and there is no way to achieve true breathability, resulting in poor air permeability of sanitary napkins, which are easy to breed bacteria and affect the physical and mental health of users. Utility Model Content

[0003] The utility model aims to provide a liquid-absorbent and breathable sanitary napkin, aiming at improving the air permeability of the sanitary napkin.

[0004] To achieve the above object, the technical solution adopted by the utility model is: to provide a liquid-absorbent and breathable sanitary napkin, comprising a non-woven fabric surface layer, a water-absorbent core, a liquid storage core and a non-woven fabric bottom layer arranged in sequence from top to bottom;

[0005] The liquid storage core comprises a first liquid storage waterproof layer and a second liquid storage waterproof layer, wherein the first liquid storage waterproof layer comprises a first non-woven liquid storage layer and a first melt-blown liquid storage layer; and the second liquid storage waterproof layer comprises a second non-woven liquid storage layer or a second melt-blown liquid storage layer.

[0006] Both sides of the non-woven fabric surface layer are provided with anti-seepage partition edges, and the fixed ends of the anti-seepage partition edges are fixed between the non-woven fabric surface layer and the non-woven fabric bottom layer.

[0007] As another embodiment of the present application, the two sides of the non-woven fabric surface layer have connecting parts, and the connecting parts are in contact with the upper end surface of the anti-seepage partition.

[0008] As another embodiment of the present application, positioning parts are provided on both sides of the non-woven fabric bottom layer, and the positioning parts are in the shape of long strips, and the positioning parts are connected to the fixed ends of the anti-seepage partition edges.

[0009] As another embodiment of the present application, the edge of the fixed end of the anti-seepage partition extends to between the liquid storage core and the positioning portion.

[0010] As another embodiment of the present application, side leakage prevention edges are provided on both sides of the non-woven fabric surface layer, and the side leakage prevention edges protrude from the upper end surface of the non-woven fabric surface layer.

[0011] As another embodiment of the present application, three-dimensional protective layers are symmetrically provided on both sides of the non-woven fabric surface layer, and the two three-dimensional protective layers are bonded to the upper end surface of the non-woven fabric surface layer; a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers, and the elastic ropes are arranged along the length direction of the non-woven fabric surface layer.

[0012] As another embodiment of the present application, the three-dimensional protective layer has a folded portion above the non-woven fabric surface layer that is turned over and extends outward, and the elastic rope is located in the folded portion.

[0013] As another embodiment of the present application, there are three elastic ropes, and the three elastic ropes are spaced apart along the width direction of the non-woven fabric surface layer, 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.

[0014] As another embodiment of the present application, the width of the water-absorbing core is smaller than the width of the liquid-storing core.

[0015] As another embodiment of the present application, the absorbent core includes a wrapping layer and a wrapping core, and the wrapping core includes a first absorbent paper layer, a polymer absorbent layer, and a second absorbent paper layer arranged in sequence; the wrapping layer wraps the wrapping core from bottom to top and forms a groove-shaped opening in the middle of the upper end of the first absorbent paper layer.

[0016] The beneficial effects of the liquid-absorbent and breathable sanitary napkin provided by the utility model are as follows: compared with the prior art, the liquid-absorbent and breathable sanitary napkin of the utility model, by adding a liquid storage core formed by non-woven fabric and meltblown fabric between the absorbent core and the non-woven fabric bottom layer, so that the liquid storage core and the non-woven fabric bottom layer cooperate to form a three-layer liquid storage anti-seepage structure, thereby achieving the breathability and anti-seepage requirements of the non-woven fabric bottom layer; in addition, anti-seepage partition edges are arranged on both sides to avoid side leakage while ensuring the breathability of the sanitary napkin, thereby preventing liquid from seeping out from both sides of the liquid storage core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 A schematic structural diagram of a liquid-absorbent, breathable sanitary napkin provided in the first embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of a liquid-absorbent, breathable sanitary napkin provided in the second embodiment of the utility model.

[0020] In the figure: 1. non-woven fabric surface layer; 2. non-woven fabric bottom layer; 3. anti-seepage partition; 4. first non-woven fabric liquid storage layer; 5. first meltblown fabric liquid storage layer; 6. second liquid storage waterproof layer; 7. wrapping layer; 8. groove-shaped opening; 9. first absorbent paper layer; 10. polymer absorbent layer; 11. second absorbent paper layer; 12. three-dimensional protective layer. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 and Figure 2 The liquid-absorbent breathable sanitary napkin provided by the utility model is now described. The liquid-absorbent breathable sanitary napkin comprises a non-woven fabric surface layer 1, a water-absorbent core, a liquid storage core and a non-woven fabric bottom layer 2 arranged in sequence from top to bottom; the liquid storage core comprises a first liquid storage waterproof layer and a second liquid storage waterproof layer 6, the first liquid storage waterproof layer comprises a first non-woven fabric liquid storage layer 4 and a first melt-blown fabric liquid storage layer 5; the second liquid storage waterproof layer 6 comprises a second non-woven fabric liquid storage layer or a second melt-blown fabric liquid storage layer; both sides of the non-woven fabric surface layer 1 are provided with an anti-seepage partition 3, and the fixed end of the anti-seepage partition 3 is fixed between the non-woven fabric surface layer 1 and the non-woven fabric bottom layer 2.

[0023] Compared with the prior art, the liquid-absorbent and breathable sanitary napkin provided by the utility model increases the air permeability of the sanitary napkin by adopting a non-woven fabric bottom layer 2 at the bottom of the sanitary napkin; in order to improve the anti-penetration ability of the non-woven fabric bottom layer 2, a liquid storage core is added below the water-absorbent core in the sanitary napkin and between the non-woven fabric bottom layer 2, and the liquid storage core passes through two liquid storage waterproof layers, wherein the first liquid storage waterproof layer includes a layer of non-woven fabric and a layer of melt-blown fabric, which is used to block most of the liquid penetration, and the second liquid storage waterproof layer 6 adopts non-woven fabric or melt-blown fabric to further block the liquid from penetrating into the non-woven fabric bottom layer 2; the liquid storage core cooperates with the non-woven fabric bottom layer 2 to form a three-layer liquid storage anti-seepage, thereby achieving the air permeability and anti-seepage requirements of the non-woven fabric bottom layer 2; in addition, anti-seepage partition edges 3 are added on both sides of the sanitary napkin body, and the turning partition is fixed between the non-woven fabric surface layer 1 and the non-woven fabric bottom layer 2, and extends outward to form two side wings; the anti-seepage partition edges 3 are made of impermeable material, such as PE cast film, to prevent liquid from penetrating from both sides of the liquid storage core, thereby avoiding side leakage.

[0024] Compared with the prior art, the liquid-absorbent and breathable sanitary napkin provided by the utility model adds a liquid storage core formed by non-woven fabric and meltblown fabric between the absorbent core and the non-woven fabric bottom layer 2, so that the liquid storage core and the non-woven fabric bottom layer 2 cooperate to form a three-layer liquid storage anti-seepage structure, thereby achieving the air permeability and anti-seepage requirements of the non-woven fabric bottom layer 2; in addition, anti-seepage partition edges 3 are arranged on both sides to avoid side leakage while ensuring the air permeability of the sanitary napkin, thereby preventing liquid from seeping out from both sides of the liquid storage core.

[0025] In some possible embodiments, see Figure 1 The non-woven fabric surface layer 1 has connecting parts on both sides, and the connecting parts are in contact with the upper end surface of the anti-seepage partition 3. The non-woven fabric bottom layer 2 has positioning parts on both sides, which are long strips and connected to the fixed ends of the anti-seepage partition 3.

[0026] Specifically, the anti-seepage edge 3 is a PE cast film in the shape of a wing, and the edge of the fixed end of the lower end surface of the anti-seepage edge 3 overlaps the long strip positioning portion of the non-woven fabric bottom layer 2, and the fixed end of the anti-seepage edge 3 overlaps with the positioning portion and is glued and connected. The non-woven fabric surface layer 1 covers the anti-seepage edge 3 on both sides, and the non-woven fabric surface layer 1 and the upper end surface of the anti-seepage edge 3 are glued or crimped for compounding.

[0027] Optionally, the edge of the fixed end of the anti-seepage partition 3 extends between the liquid storage core and the positioning portion.

[0028] Optionally, both sides of the non-woven fabric surface layer 1 are provided with side leakage prevention edges, and the side leakage prevention edges protrude from the upper end surface of the non-woven fabric surface layer 1 .

[0029] In some possible embodiments, see Figure 2 Three-dimensional protective layers 12 are symmetrically arranged on both sides of the non-woven fabric surface layer 1, and the two three-dimensional protective layers 12 are bonded to the upper end surface of the non-woven fabric surface layer 1; a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers 12, and the elastic ropes are arranged along the length direction of the non-woven fabric surface layer 1.

[0030] The three-dimensional protective layer 12 forms a three-dimensional shielding structure on the upper end surface of the non-woven fabric surface layer 1 by means of an elastic rope, and the three-dimensional protective layer 12 protects the liquid in the core and on the non-woven fabric surface layer 1 to prevent it from leaking sideways. The three-dimensional protective layer 12 has an outward folding portion above the core, and the elastic rope is located in the folding portion.

[0031] Specifically, the three-dimensional protective layer 12 is bonded to the upper end surface of the non-woven fabric surface layer 1, and its free end faces the center of the core. The three-dimensional protective layer 12 is folded upward and outward at its middle position, and folded above the fixed side portion; the part folded to the top is the folding portion, and an 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 12 is unfolded at the upper end of the non-woven fabric surface layer 1, and forms a three-dimensional shielding structure.

[0032] 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 12 is smaller than the distance between two adjacent elastic ropes near the fixed end of the three-dimensional protective layer 12. 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 12 is folded upward; the third elastic rope is located at the edge of the free end of the three-dimensional protective layer 12; 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.

[0033] In some possible embodiments, see Figure 1 and Figure 2 , the width of the water-absorbing core is smaller than the width of the liquid-storing core.

[0034] The water-absorbing core is located above the liquid-storing core, the width difference between the water-absorbing core and the liquid-storing core is 1-2 mm, and the water-absorbing core is coaxial with the liquid-storing core.

[0035] In addition, the absorbent core includes a wrapping layer 7 and a wrapping core, and the wrapping core includes a first absorbent paper layer 9, a polymer absorbent layer 10, and a second absorbent paper layer 11 arranged in sequence; the wrapping layer 7 wraps the wrapping core from bottom to top and forms a groove-shaped opening 8 in the middle of the upper end of the first absorbent paper layer 9.

[0036] The first absorbent paper layer 9, the polymer absorbent layer 10 and the second absorbent paper layer 11 included in the wrapping core are arranged in sequence from top to bottom. The first absorbent paper layer 9 and the second absorbent paper layer 11 are used to fix the polymer absorbent layer 10 therebetween to ensure uniform distribution of the polymer absorbent material.

[0037] The liquid penetrates into the absorbent core from the surface layer and is first absorbed by the first absorbent paper layer 9, and at the same time is guided by the first absorbent paper layer 9 to increase its contact area; then the liquid enters the polymer absorbent layer 10, a large amount of liquid is absorbed by the polymer absorbent layer 10, and the rest penetrates downward to the second absorbent paper layer 11, the wrapping layer 7, and even the liquid storage core.

[0038] In addition, the wrapping layer 7 is wrapped around the outside of the wrapping core from bottom to top, and a groove-shaped opening 8 is left in the middle of the upper end surface of the first absorbent paper layer 9, forming a long groove body at the lower end of the middle part of the non-woven fabric surface layer 1. After the liquid penetrates the non-woven fabric surface layer 1 and enters the groove body, it penetrates downward from the groove body or penetrates and is guided by the wrapping layer 7, which increases the liquid penetration area while improving the dryness of the non-woven fabric surface layer 1, avoiding the problem of poor dryness of the middle part of the non-woven fabric surface layer 1 due to the adhesion with the absorbent core.

[0039] 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-absorbent, breathable sanitary napkin, characterized in that: It comprises a non-woven fabric surface layer (1), a water-absorbing core, a liquid storage core and a non-woven fabric bottom layer (2) which are arranged in sequence from top to bottom; The liquid storage core comprises a first liquid storage waterproof layer and a second liquid storage waterproof layer (6), wherein the first liquid storage waterproof layer comprises a first non-woven fabric liquid storage layer (4) and a first melt-blown fabric liquid storage layer (5); and the second liquid storage waterproof layer (6) comprises a second non-woven fabric liquid storage layer or a second melt-blown fabric liquid storage layer; Both sides of the non-woven fabric surface layer (1) are provided with anti-seepage partition edges (3), and the fixed ends of the anti-seepage partition edges (3) are fixed between the non-woven fabric surface layer (1) and the non-woven fabric bottom layer (2).

2. The liquid-absorbent, breathable sanitary napkin according to claim 1, characterized in that: The non-woven fabric surface layer (1) has connecting parts on both sides, and the connecting parts are in contact with the upper end surface of the anti-seepage partition (3).

3. The liquid-absorbent, breathable sanitary napkin according to claim 2, characterized in that: Positioning parts are provided on both sides of the non-woven fabric bottom layer (2), the positioning parts are in the shape of long strips, and the positioning parts are connected to the fixed ends of the anti-seepage partition (3).

4. The liquid-absorbent, breathable sanitary napkin according to claim 3, characterized in that: The edge of the fixed end of the anti-seepage partition (3) extends between the liquid storage core and the positioning portion.

5. The liquid-absorbent, breathable sanitary napkin according to claim 1, characterized in that: Side leakage prevention edges are provided on both sides of the non-woven fabric surface layer (1), and the side leakage prevention edges protrude from the upper end surface of the non-woven fabric surface layer (1).

6. The liquid-absorbent, breathable sanitary napkin according to claim 1, characterized in that: Three-dimensional protective layers (12) are symmetrically arranged on both sides of the non-woven fabric surface layer (1), and the two three-dimensional protective layers (12) are both bonded to the upper end surface of the non-woven fabric surface layer (1); a plurality of elastic ropes are fixed to the free ends of the three-dimensional protective layers (12), and the elastic ropes are arranged along the length direction of the non-woven fabric surface layer (1).

7. The liquid-absorbent, breathable sanitary napkin according to claim 6, characterized in that: The three-dimensional protective layer (12) has a folded portion above the non-woven fabric surface layer (1) that is turned over and extends outward, and the elastic rope is located in the folded portion.

8. The liquid-absorbent, breathable sanitary napkin according to claim 6, characterized in that: There are three elastic ropes, which are spaced apart along the width direction of the non-woven fabric surface layer (1), and the distance between two adjacent elastic ropes near the free end of the three-dimensional protective layer (12) is smaller than the distance between two adjacent elastic ropes near the fixed end of the three-dimensional protective layer (12).

9. The liquid-absorbent, breathable sanitary napkin according to claim 1, characterized in that: The width of the water-absorbing core is smaller than the width of the liquid-storing core.

10. The liquid-absorbent, breathable sanitary napkin according to claim 1, characterized in that: The absorbent core comprises a wrapping layer (7) and a wrapping core, wherein the wrapping core comprises a first absorbent paper layer (9), a polymer absorbent layer (10), and a second absorbent paper layer (11) which are arranged in sequence; the wrapping layer (7) wraps the wrapping core from bottom to top and forms a groove-shaped opening (8) in the middle of the upper end of the first absorbent paper layer (9).

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