阅读说明：本技术 吸收性物品 (Absorbent article ) 是由 田笼纯太 于 2019-03-11 设计创作，主要内容包括：防漏用挤压部以规定的图案形成在区域(H)的外侧,该防漏用挤压部由使吸收体凹陷而成的凹陷部构成,并且,通过使从体液排出部对应区域(H)扩散的体液的扩散方向变化来防止从吸收体的端部的泄漏。防漏用挤压部具备：液体引导部,其分别配置在从区域(H)的近端侧朝向远端侧的中心线(L)的两侧,并且具有使隔着中心线(L)的相互的分离距离随着从区域(H)的近端侧朝向远端侧而变小的部分,将从区域(H)朝向外侧扩散的体液向中心线(L)侧引导；集液部,其位于比液体引导部靠区域(H)的远端侧的中心线(L)上,将由液体引导部引导的体液汇集；以及液体扩散部,其分别从集液部向中心线(L)的两侧延伸,使汇集的体液朝向中心线(L)的两侧扩散。(The leakage-preventing pressing portion is formed outside the region (H) in a predetermined pattern, is formed of a recessed portion formed by recessing the absorbent body, and prevents leakage from the end of the absorbent body by changing the diffusion direction of the body fluid diffused from the body fluid discharge portion corresponding region (H). The leak-proof pressing part comprises: liquid guiding parts which are respectively arranged on both sides of a center line (L) from the proximal end side to the distal end side of the region (H) and have a part which makes the mutual separation distance between the center line (L) become smaller along with the distance from the proximal end side to the distal end side of the region (H), and which guide the body fluid diffused from the region (H) to the outside to the center line (L) side; a liquid collection unit which is positioned on a center line (L) on the distal end side of the region (H) closer to the liquid guide unit and collects the body fluid guided by the liquid guide unit; and liquid diffusion sections which extend from the liquid collection section to both sides of the center line (L) and diffuse the collected body fluid to both sides of the center line (L).)

1. An absorbent article comprising at least an absorber,

a leakage-preventing pressing portion formed in a predetermined pattern outside the region corresponding to the body fluid discharge portion, the leakage-preventing pressing portion being formed of at least a depressed portion that is formed by depressing the absorbent body, and preventing leakage from the end portion of the absorbent body by changing the direction of diffusion of the body fluid diffusing from the region corresponding to the body fluid discharge portion of the wearer,

the leakage-preventing pressing portion includes:

liquid guide portions which are respectively disposed on both sides of a center line extending from a proximal end side to a distal end side of the region corresponding to the body fluid discharge portion and which have portions in which a distance of separation from each other across the center line decreases from the proximal end side to the distal end side of the region corresponding to the body fluid discharge portion, and which guide the body fluid spreading outward from the region corresponding to the body fluid discharge portion toward the center line side;

a liquid collection unit that is positioned on the center line on the distal end side of the region corresponding to the body fluid discharge unit with respect to the liquid guide unit and collects the body fluid guided by the liquid guide unit; and

and liquid diffusion sections which extend from the liquid collection section to both sides of the center line, respectively, and diffuse the collected body fluid to both sides of the center line.

2. The absorbent article of claim 1,

the leakage preventing squeezing part is arranged at least on one or both of the front side and the rear side of the region corresponding to the body fluid discharge part.

3. The absorbent article of claim 1,

the liquid guiding parts are separately arranged on two sides of the central line.

4. The absorbent article of claim 1,

the liquid guide portion is disposed continuously or separately from the liquid collecting portion.

5. The absorbent article of claim 1,

the liquid guiding part is formed such that the average density of the fibers gradually increases as the fibers approach the center line.

6. The absorbent article of claim 1,

the liquid collecting part is provided with a low extrusion part and a high extrusion part, and the planar shape of the high extrusion part is formed into any one shape of a circle, an X shape and a diamond shape.

7. The absorbent article of claim 1,

the plurality of liquid diffusion portions extend from the liquid collecting portion to both sides of the center line in different directions.

8. The absorbent article of claim 7,

at least 2 of the liquid diffusing parts extending to both sides of the center line are connected at a distal end portion.

9. The absorbent article of claim 1,

the leakage preventing pressing portion is formed to be symmetrical to the center line or asymmetrical to the center line.

Technical Field

The present invention relates to an absorbent article mainly used for sanitary napkins, pantiliners, incontinence pads, toiletries, and the like.

Background

Conventionally, as such an absorbent article, there has been known an absorbent article in which an absorbent body made of cotton pulp or the like is interposed between a liquid-impermeable back sheet such as a polyethylene sheet or a polyethylene sheet laminated with a nonwoven fabric and a liquid-permeable top sheet such as a nonwoven fabric or a liquid-permeable plastic sheet.

In order to reliably prevent leakage of body fluid, it is effective to use an absorbent body having an excellent function of absorbing and holding body fluid, but in order to utilize the absorption capacity of body fluid originally provided in the absorbent body to the maximum, it is important to diffuse the body fluid in a wide range of the absorbent body without locally biasing the diffusion region of body fluid.

The body fluid absorbed by the absorbent body enters the gaps between the fibers and diffuses between the fibers by capillary action. In this case, the body fluid that diffuses between the fibers has a property of easily diffusing from a portion having a large space between the fibers to a portion having a small space between the fibers. That is, it is known that by forming the squeezing portion in the absorbent body, the body fluid is easily diffused toward the squeezing portion.

As an absorbent article having such a compressed portion formed therein, for example, patent document 1 below discloses an absorbent article having: in the rear region, a pair of rear side pressing portions that press at least the absorbent core and are provided apart from each other with respect to a center line passing through the center in the width direction of the absorbent article are formed along the front-rear direction, the pair of rear side pressing portions being located more rearward than the position of the maximum width of the hip wing in the width direction, and the pair of rear side pressing portions having a width section in which the distance in the width direction widens toward the rear side.

Further, paragraph [0031] of patent document 2 below discloses an absorbent article provided with a front groove formed by a central portion having a convex shape facing forward and a pair of side portions continuous with the central portion and extending rearward, respectively.

Disclosure of Invention

Problems to be solved by the invention

In the absorbent article described in patent document 1, the rear side compressed parts are provided so as to be inclined outward in the width direction as they go rearward, but since the rear side compressed parts are provided so as to be spaced apart from each other with respect to a center line passing through the center in the width direction of the absorbent article, body fluid is likely to pass between the pair of rear side compressed parts and spread to a position rearward of the rear side compressed parts, and leakage from the end portions of the absorbent body is likely to occur.

On the other hand, in the absorbent article described in patent document 2, since the center in the width direction of the front groove is formed in a continuous line shape that is tapered toward the front and is positioned approximately on the longitudinal center line of the absorbent article, the body fluid that has diffused toward the front groove collects in the center in the width direction of the front groove, and as a result, the body fluid overflows at the front-tapered end portion, and is likely to diffuse to the front side of the front groove, and leakage from the end portion of the absorbent body may occur.

In view of the above, a main object of the present invention is to provide an absorbent article in which a pressing portion is formed in a pattern that facilitates a change in the direction of diffusion of a body fluid diffused from a region corresponding to a body fluid discharge portion, thereby preventing leakage from an end portion of an absorbent body.

Means for solving the problems

In order to solve the above problem, one aspect of the present invention provides an absorbent article including at least an absorbent body,

a leakage-preventing pressing portion formed in a predetermined pattern outside the region corresponding to the body fluid discharge portion, the leakage-preventing pressing portion being formed of at least a depressed portion that is formed by depressing the absorbent body, and preventing leakage from the end portion of the absorbent body by changing the direction of diffusion of the body fluid diffusing from the region corresponding to the body fluid discharge portion of the wearer,

the leakage-preventing pressing portion includes:

liquid guide portions which are respectively disposed on both sides of a center line extending from a proximal end side to a distal end side of the region corresponding to the body fluid discharge portion, and which have portions in which a distance of separation from each other across the center line decreases from the proximal end side to the distal end side of the region corresponding to the body fluid discharge portion, and which guide the body fluid spreading outward from the region corresponding to the body fluid discharge portion toward the center line side;

a liquid collection unit that is positioned on the center line on the distal end side of the region corresponding to the body fluid discharge unit with respect to the liquid guide unit and collects the body fluid guided by the liquid guide unit; and

and liquid diffusion sections which extend from the liquid collection section to both sides of the center line, respectively, and diffuse the collected body fluid to both sides of the center line.

ADVANTAGEOUS EFFECTS OF INVENTION

As described above in detail, according to the present invention, the absorbent body can be prevented from leaking from the end portion of the absorbent body by forming the compressed portion in a pattern that facilitates changing the direction of diffusion of the body fluid diffused from the region corresponding to the body fluid discharge portion.

Drawings

Fig. 1 is a partially cut-away developed view of a sanitary napkin 1 according to the present invention.

Fig. 2 is a line-up view II-II of fig. 1.

Fig. 3 is a view in line III-III of fig. 1.

Fig. 4 is a plan view of the leakage preventing press portion 11.

Fig. 5 is a plan view of a modified liquid guiding unit 12.

Fig. 6 is a plan view showing the high-pressure squeezing portion 13a of the liquid collecting portion 13.

Fig. 7 is a plan view of a modified leakage preventing press portion 11.

Fig. 8 is a plan view of a modified leakage preventing press portion 11.

Fig. 9 is a plan view of a sanitary napkin 1 according to a modification.

Fig. 10 is a plan view of a sanitary napkin 1 (1) according to another embodiment.

Fig. 11 is a plan view of a sanitary napkin 1 (2) according to another embodiment.

Fig. 12 is a plan view of a sanitary napkin 1 according to another embodiment (fig. 3).

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[ basic Structure of sanitary napkin 1 for physiology ]

As shown in fig. 1 to 3, a sanitary napkin 1 of the present invention includes: a liquid-impermeable back sheet 2 made of a polyethylene sheet or the like; a liquid-permeable top sheet 3 that allows menstrual blood, secretions, and the like (hereinafter, collectively referred to as "body fluid") to rapidly penetrate therethrough; an absorber 4 made of cotton pulp or synthetic pulp or the like interposed between the two sheets 2, 3; and side nonwoven fabrics 7, 7 provided on both sides of the skin contact surface over substantially the entire length in the longitudinal direction. Further, around the absorbent body 4, the outer edge portions of the back sheet 2 and the front sheet 3 are joined together by an adhesive such as a hot melt adhesive, or by heat sealing, ultrasonic sealing, or the like at the upper and lower edge portions thereof, and the back sheet 2 and the side nonwoven fabric 7 extending laterally further than the absorbent body 4 are joined together by an adhesive such as a hot melt adhesive, or by heat sealing, ultrasonic sealing, or the like at both side edge portions thereof, and a pair of right and left wing-shaped flaps W, W are formed at the absorbent body side portions in a region substantially corresponding to the bodily fluid discharge portion of the wearer (hereinafter also referred to as "bodily fluid discharge portion corresponding region H"). In the illustrated example, the absorbent body 4 is surrounded by a cover sheet 5 made of crepe paper, nonwoven fabric, or the like in order to maintain the shape of the absorbent body 4 and improve diffusibility, but the cover sheet 5 may not be provided. In the illustrated example, the second sheet 6 made of hydrophilic nonwoven fabric or the like having substantially the same shape as the top sheet 3 is disposed adjacent to the non-skin side of the top sheet 3, but the second sheet 6 may not be provided.

The body fluid discharge portion corresponding region H is a region disposed to face the body fluid discharge portion (including the vaginal opening) of the wearer when the sanitary napkin 1 is worn. In the case where the wing-shaped flaps W, W are formed on both sides as in the sanitary napkin 1, the range in the sanitary napkin longitudinal direction of the body fluid discharge part corresponding region H may be the range in the sanitary napkin longitudinal direction at the base end of the wing-shaped flap W, and in the case where the wing-shaped flap W is not formed, the range in the sanitary napkin longitudinal direction of the body fluid discharge part corresponding region H may be the range of the length of 70mm to 90mm in the sanitary napkin longitudinal direction from the position 60mm to 80mm rearward from the front end edge of the sanitary napkin 1. Further, in the case where the bodily fluid discharge portion-corresponding regions H have the bodily fluid discharge portion-squeezing portions 10, 10 formed along the longitudinal direction of the sanitary napkin on both sides thereof as in the sanitary napkin 1, the range in the width direction of the sanitary napkin in the bodily fluid discharge portion-corresponding region H can be within the separation width of these bodily fluid discharge portion-squeezing portions 10, and in the case where the bodily fluid discharge portion-squeezing portions 10 are not formed, the range in the width direction of the sanitary napkin in the bodily fluid discharge portion-corresponding region H can be within the width of 30mm to 50mm around the longitudinal center line of the sanitary napkin 1.

Hereinafter, the structure of the sanitary napkin 1 will be described in further detail. As the back sheet 2, a sheet having at least water repellency such as polyethylene is used, and from the viewpoint of preventing stuffiness, a sheet having moisture permeability is desirably used. As the waterproof/moisture-permeable sheet, a microporous sheet obtained by melt-mixing an inorganic filler with an olefin resin such as polyethylene or polypropylene to form a sheet and then stretching the sheet in a uniaxial or biaxial direction is suitably used. One or more adhesive layers (not shown) may be formed on the non-skin side (outer surface) of the back sheet 2 along the longitudinal direction of the sanitary napkin to fix the sanitary napkin 1 to underwear when worn on the body. As the back sheet 2, a poly-lamite nonwoven fabric obtained by laminating a plastic film and a nonwoven fabric may be used.

Next, as the top sheet 3, a porous or nonporous nonwoven fabric, a porous plastic sheet, or the like is suitably used. As the raw material fibers constituting the nonwoven fabric, in addition to synthetic fibers such as olefin-based fibers such as polyethylene and polypropylene, polyester-based fibers and polyamide-based fibers, rayon, regenerated fibers such as cuprammonium, and natural fibers such as cotton, nonwoven fabrics obtained by an appropriate processing method such as a thermal bonding method, a spunlace method, a spunbond method, a melt blowing method, a needle punching method, and the like can be used. Among these processes, the present sanitary napkin 1 is particularly preferably a breathable heat-bondable nonwoven fabric (a nonwoven fabric structure formed by using heat-bondable fibers as a raw material and passing the fibers through a hot air treatment machine) having large gaps between the fibers. When a large number of through holes are formed in the top sheet 3, body fluid is quickly absorbed, and the top sheet is excellent in dry touch properties. The fibers of the nonwoven fabric may be either long fibers or short fibers, but short fibers are preferably used in order to obtain a hand feeling of a towel texture. In addition, for easy embossing, olefin fibers such as polyethylene or polypropylene having a relatively low melting point can be used. Further, a core-sheath fiber, a side-by-side fiber, or a composite fiber of a split fiber, in which a fiber having a high melting point is used as a core and a fiber having a low melting point is used as a sheath, can be suitably used.

The absorbent member 4 interposed between the back sheet 2 and the front sheet 3 may be made of, for example, pulp or a super absorbent polymer. The super absorbent polymer can be mixed as granular powder into pulp constituting the absorbent body, for example. Examples of the pulp include pulp composed of cellulose fibers such as chemical pulp obtained from wood and dissolving pulp, and artificial cellulose fibers such as rayon and acetate, and softwood pulp having a longer fiber length than hardwood pulp is suitably used in terms of function and price.

The sanitary napkin 1 is preferably a thin and slim sanitary napkin having a reduced basis weight of the absorbent member 4. By reducing the basis weight of the absorbent body 4, the absorbent capacity per unit area of the absorbent body 4 is reduced, and the body fluid has a property of easily spreading in the planar direction. Therefore, in the thin sanitary napkin, the sanitary napkin can be easily attached to the napkinThe effect of the present invention of changing the direction of diffusion of the body fluid and preventing leakage from the end of the absorbent body 4 can be sufficiently exhibited. The pulp may have a basis weight of 50g/m²～300g/m²Preferably 80g/m²～220g/m²The superabsorbent polymer may have a basis weight of 30g/m²～180g/m²Preferably 50g/m²～160g/m². The basis weights of these pulps and super absorbent polymers do not need to be constant, and may vary depending on the position of the absorbent body. For example, a high-absorbency portion having an increased basis weight of pulp and superabsorbent polymer can be formed in a region corresponding to the bodily fluid discharge portion H of the wearer.

Synthetic fibers may be mixed in the absorbent body 4. Examples of the synthetic fibers include polyolefin-based fibers such as polyethylene and polypropylene, polyethylene terephthalate, polyester-based fibers such as polyethylene terephthalate, polyamide-based fibers such as nylon, and copolymers thereof, and 2 of these may be mixed. Further, composite fibers such as core-sheath fibers, side-by-side fibers, and split fibers, in which a fiber having a high melting point is used as a core and a fiber having a low melting point is used as a sheath, can also be used. In the case of the hydrophobic fibers, it is desirable to use fibers surface-treated with a hydrophilizing agent so as to have affinity for body fluids.

The hydrophilic second sheet 6 disposed adjacent to the non-skin side of the top sheet 3 may have hydrophilicity with respect to body fluid if necessary. Specifically, fibers having hydrophilicity of the raw material itself can be used by using regenerated fibers such as rayon and cuprammonium, natural fibers such as cotton, or fibers having hydrophilicity imparted by surface-treating synthetic fibers such as olefin-based fibers including polyethylene and polypropylene, polyester-based fibers, and polyamide-based fibers with a hydrophilizing agent. Further, composite fibers such as core-sheath fibers, side-by-side fibers, and split fibers, in which a fiber having a high melting point is used as a core and a fiber having a low melting point is used as a sheath, can be used. The second sheet 6 is desirably joined to the absorbent body 4 (cover sheet 5) by a hot melt adhesive or the like. By joining the second sheet 6 to the absorbent body 4, body fluid can be quickly transferred from the second sheet 6 to the absorbent body 4.

In the illustrated example, as shown in the transverse cross-sectional views of fig. 2 and 3, the width dimension of the top sheet 3 is slightly longer than the width of the absorbent body 4, and only the absorbent body 4 may be covered, and a side nonwoven fabric 7 different from the top sheet 3 is disposed on the outer side thereof, and specifically, a side nonwoven fabric 7 formed by using a nonwoven fabric material subjected to an appropriate water repellent treatment or hydrophilic treatment is disposed for the purpose of preventing permeation of menstrual blood, secretions, or the like, or improving the texture.

As the side nonwoven fabric 7, a side nonwoven fabric formed from natural fibers, synthetic fibers, regenerated fibers, or the like as a raw material by an appropriate processing method can be used. As the side nonwoven fabric, a nonwoven fabric having an increased basis weight can be preferably used in order to improve the recessed capability of body fluid. Specifically, it is desirable to use a base weight of 13g/m²～23g/m²And the nonwoven fabric thus produced. In order to reliably prevent the permeation of body fluids, a water repellent treated nonwoven fabric coated with a silicon-based, paraffin-based, or alkylchromium chloride-based water repellent is suitably used.

As shown in fig. 2 and 3, the portions of the side nonwoven fabrics 7 outside the middle portions in the width direction are bonded by an adhesive such as a hot melt adhesive within a range from a predetermined inner position to the outer edge of the back sheet 2, and flap portions not interposing the absorbent body 4 are formed at both side portions of the absorbent body 4 by the laminated sheet portions of the side nonwoven fabrics 7 and the back sheet 2. With this flap portion, a pair of right and left wing-like flaps W, W can be formed at positions on the side of the absorbent body that substantially correspond to the bodily fluid discharge part corresponding region H in the longitudinal direction. The wing-shaped flaps W, W are provided with adhesive layers (not shown) on the outer surface sides thereof, and when worn in underwear, the wing-shaped flaps W, W are folded back on the opposite side at the folding line RL at the base end and are wrapped around the crotch of underwear to be fixed. On the other hand, the inner side portion of the side nonwoven fabric 7 is bonded to the absorbent body 4 side (the skin side surface of the topsheet 3) in a state of being laminated on the skin side of the topsheet 3.

[ extrusion portion ]

In the sanitary napkin 1, the compressed portions, which are formed of at least the concave portions formed by recessing the absorbent body 4, are formed in a predetermined pattern in a predetermined region. The pressing portion may press the absorbent body 4 from the skin-side surface (surface on the topsheet 3 side) to recess only the absorbent body 4, may press the skin-side surface of the cover sheet 5 covering the skin-side surface of the absorbent body 4 to integrally recess the cover sheet 5 and the absorbent body 4, or may press the topsheet 3 from the skin-side surface to integrally recess the topsheet 3 to the absorbent body 4 in a state where the topsheet 3 and, if necessary, the second sheet 6 are laminated on the skin-side surface of the absorbent body 4. Among them, in order to suppress the diffusion of the body fluid absorbed by the absorbent body 4, and also to suppress the diffusion of the body fluid absorbed by the top sheet 3 and to prevent the leakage of the body fluid flowing on the surface of the top sheet 3, it is preferable that the compressed portion is formed by a depressed portion integrally depressed from the top sheet 3 to the absorbent body 4.

In the sanitary napkin 1 shown in fig. 1, as the squeezing portion, there are provided: body fluid discharge portion squeezing portions 10 which are respectively arranged along the longitudinal direction of the sanitary napkin on at least both side portions of the body fluid discharge portion corresponding region H and which block discharged body fluid; and a leakage prevention pressing portion 11 which is disposed outside the body fluid discharge portion corresponding region H and prevents leakage from the end portion of the absorbent body 4 by changing the diffusion direction of the body fluid diffused from the body fluid discharge portion corresponding region H.

The bodily fluid discharge part squeezing part 10 is provided to function as follows: the body fluid discharge portion corresponding region H exhibits resistance to leg pressure and the like generated by the inner portions of the leg base portions acting from both sides toward the inside in the width direction when worn, and the region surrounded by the body fluid discharge portion squeezing portions 10, 10 is brought into close contact with the body fluid discharge portion of the wearer, and the body fluid absorbed by the absorbent body 4 or the body fluid flowing on the surface of the topsheet 3 is blocked, and the body fluid is prevented from spreading to the outside of the body fluid discharge portion squeezing portion 10.

As the body fluid discharge portion squeezing portion 10, a known method of disposing at least both side portions of the body fluid discharge portion corresponding region H can be widely used. For example, in the illustrated example, the bodily fluid discharge part squeezing part 10 is formed of an annular oval shape surrounding the periphery of the bodily fluid discharge part corresponding region H. Further, the body fluid discharge portion corresponding region H may be formed by arc-shaped lines which are symmetrical with respect to the left and right and are independently arranged on both sides of the body fluid discharge portion corresponding region H, or may be formed in a pattern which is opened at the rear end or the front end and is shaped like an approximate コ (approximate C), that is, a pattern which is symmetrical with respect to the left and right and has a curved shape which is convex or concave outward in the width direction. In the illustrated example, the bodily fluid discharge part squeezing part 10 is formed of a continuous line that squeezes over the entire length, but may be formed of an intermittent line in which non-squeezing parts are intermittently provided.

The bodily fluid discharge part squeezing portion 10 may be formed of a squeezing groove having a substantially uniform squeezing depth, but as shown in the drawing, it is preferably formed of a low squeezing portion and a high squeezing portion having a groove depth larger than that of the low squeezing portion. In the figure, the black portion is a high-compressed portion, and the other portions are low-compressed portions. The high-pressure portions are disposed at predetermined intervals. As the planar shape of the high-pressure extrusion portion, a known shape can be widely used, and for example, the planar shape may be any one of a circle, a semicircle, an ellipse, a heart, and a star, or a combination of 2 or more of them.

Next, the leak preventing squeezing portion 11 will be described. The sanitary napkin 1 is characterized in that the leakage preventing compressed portion 11 is provided. The leakage preventing squeezing portion 11 is for preventing leakage from the end of the absorbent body 4 by changing the direction of diffusion of the body fluid diffusing from the body fluid discharge portion corresponding region H into the absorbent body 4.

The leakage preventing squeezing part 11 is provided outside the body fluid discharge part corresponding region H, desirably outside the body fluid discharge part squeezing part 10. This can prevent the body fluid that has spread outward beyond the body fluid discharge portion squeezing portion 10 from spreading toward the end of the absorbent body 4, thereby improving the leakage prevention effect of preventing leakage from the end of the absorbent body 4. The distance of separation from the body fluid discharge unit squeezing unit 10 (the minimum separation length in a straight line) is not particularly limited, but if too close, a continuous flow from the body fluid discharge unit squeezing unit 10 is likely to occur, and if too far, the diffusion range of the body fluid is widened and the body fluid is hard to collect, and therefore, the distance may be 5mm to 30mm, preferably 7mm to 15 mm. On the other hand, the separation distance (the minimum separation length in a straight line) between the leakage preventing compressed portion 11 and the end edge of the absorbent body 4 is not particularly limited, but may be 10mm or more from the viewpoint of preventing leakage from the end edge of the absorbent body 4.

The leakage preventing squeezing portion 11 may be constituted by a squeezing groove having a substantially uniform groove depth, as in the body fluid discharge portion squeezing portion 10 described above, but preferably, as in the illustrated example, it is constituted by a low squeezing portion and a high squeezing portion having a groove depth larger than that of the low squeezing portion.

As shown in fig. 4, the plane pattern of the leakage preventing press part 11 includes: liquid guiding sections 12 which are respectively disposed on both sides of a center line L extending from the proximal end side to the distal end side of the body fluid discharge section corresponding region H and have portions in which the distance separating the center line L from each other decreases from the proximal end side to the distal end side of the body fluid discharge section corresponding region H; a liquid collecting section 13 located on the center line L on the distal end side of the body fluid discharge section corresponding region H with respect to the liquid guiding section 12; and a liquid diffusing portion 14 extending from the liquid collecting portion 13 to both sides of the center line L, thereby forming a substantially ribbon shape (substantially bow-tie shape) as a whole.

The liquid guide part 12 has a function of guiding the body fluid diffused outward from the body fluid discharge part corresponding region H toward the center line L. The body fluid diffused from the body fluid discharge portion corresponding region H first reaches the fluid guide portion 12 in the leakage prevention squeezing portion 11, and is guided to the center line L side along the fluid guide portion 12.

As shown in fig. 4, the liquid guides 12 and 12 are preferably arranged in 1 on each side of the center line L, and the liquid guides 12 and 12 are separated from each other with the center line L therebetween. As shown in fig. 4, when the proximal end side of the body fluid discharge portion corresponding region H is disposed downward and the distal end side thereof is disposed upward, the liquid guide portions 12 and 12 on both sides are disposed in a substantially ハ shape (a substantially inverted V shape with no tip joined). By being separately disposed on both sides of the center line L, the bodily fluid spreading outward from the bodily fluid discharge portion corresponding region H is easily circulated through the separation portion provided in the center portion. The separation width A may be 2mm to 10mm, preferably 2mm to 7 mm. If the diameter is less than 2mm, the body fluid is less likely to flow through the separation portion between the liquid guiding portions 12, 12 on both sides, and if the diameter is greater than 10mm, the body fluid cannot be received by the liquid collecting portion 13 without forming the liquid collecting portion 13 into a large shape, and the body fluid is likely to flow to the outside of the leakage preventing squeezing portion 11.

The liquid guide parts 12 are preferably formed by curves bulging toward the body fluid discharge part corresponding region H, in order to facilitate diffusion of the body fluid toward the center line L, but are not limited thereto, and may be formed by curves, straight lines, or the like bulging toward the distal end side of the body fluid discharge part corresponding region H.

The liquid guiding part 12 may have a portion at least on the side of the center line L, in which the distance between the two portions from the proximal end side of the region H corresponding to the bodily fluid discharge part decreases toward the distal end side thereof, and the portion outside the portion may be formed so that the tip (the tip on the outer side in the width direction) curves toward the distal end side of the region H corresponding to the bodily fluid discharge part as shown in the drawing. The length of the portion where the distance of separation between the center lines L decreases from the proximal end side to the distal end side of the body fluid discharge portion corresponding region H (the length in the direction orthogonal to the center line L) is arbitrary, but in order to sufficiently obtain the effect of guiding the diffused body fluid to the center line L side along the liquid guide portion 12, the length of the entire liquid guide portion 12 (the length in the direction orthogonal to the center line L) is 1/2 or more, preferably 2/3 or more. It is preferable that the length B from the center line L to the distal end of the liquid guiding part 12 is longer than the length C from the center line L to the distal end of the liquid diffusing part 14 (B > C) in order to prevent the body fluid diffused from the proximal end side toward the distal end side of the body fluid discharge part corresponding region H from directly reaching the liquid diffusing part 14.

The liquid guiding part 12 is preferably formed such that the average density of the fibers gradually increases as the fibers approach the center line L. Thus, in the liquid guiding part 12, the body fluid is easily diffused toward the center line L by the capillary action of the fibers, and the body fluid is easily collected in the liquid collecting part 13. The average density of the fibers means an average value of the density of the fibers per unit area. When the average density of the fibers is gradually increased, the average density of the fibers can be increased by narrowing the interval of the high-compressed parts 12a where the fiber density is relatively high, and therefore, as shown in fig. 5, the fibers can be formed by: the liquid guide portion 12 is composed of a low squeezing portion and a high squeezing portion 12a, and the interval between the high squeezing portions 12a gradually narrows as it approaches the center line L.

The liquid collecting portion 13 has a function of blocking and collecting the body fluid guided to the center line L side by the liquid guiding portions 12, 12 on both sides. The liquid collecting portion 13 serves as a base point for spreading the liquid toward the liquid diffusing portion 14 located downstream.

The liquid collecting portion 13 is positioned on the center line L on the distal end side of the body fluid discharge portion corresponding region H with respect to the end edge on the center line L side of the liquid guiding portion 12. That is, the liquid collecting portion 13 is provided adjacent to the end edges of the liquid guiding portions 12, 12 so as to close the gap between the liquid guiding portions 12, 12 disposed separately on both sides of the center line L. Therefore, the pooling portion 13 prevents the body fluid, which has diffused outward through the gap between the liquid guiding portions 12 and 12, from further diffusing outward.

The collecting portion 13 may be disposed continuously at an end edge on the center line L side of the liquid guiding portion 12, or may be disposed separately as shown in fig. 4. When the liquid guide portion 12 and the liquid collecting portion 13 are arranged in series, the body fluid is easily transferred from the liquid guide portion 12 to the liquid diffusing portion 14, and the body fluid is smoothly diffused thereafter. On the other hand, in the case of the separated arrangement, since a non-compressed portion having a relatively large space between fibers exists between the liquid guiding portion 12 and the liquid collecting portion 13, the transfer of the body fluid from the liquid guiding portion 12 to the liquid collecting portion 13 becomes slow, and leakage due to the body fluid rapidly collecting in the collecting portion 13 and overflowing in the collecting portion 13 and spreading to the outside can be prevented. The separation distance (the minimum separation length on a straight line) between the pooling portion 13 and the liquid guide portion 12 is not particularly limited, but is preferably about 0mm to 5 mm.

The planar shape of the liquid collecting portion 13 is not particularly limited, but is preferably substantially circular so as to block the bodily fluid and easily disperse the collected bodily fluid. In the example shown in fig. 4, 1 high squeezing portion 13a is disposed at the center of a low squeezing portion formed in a substantially circular shape. This makes it possible to disperse the body fluid in an arbitrary direction substantially uniformly without limitation to the direction of diffusion of the body fluid, and to easily diffuse the body fluid.

The planar shape of the high-pressure portion 13a disposed in the liquid collecting portion 13 is not particularly limited, but is preferably formed into a shape that is likely to cause liquid diffusion along the liquid diffusion portion 14. Specifically, the shape may be an X-shape, a diamond shape (square in the illustrated example), or the like as shown in fig. 6, in addition to the circular shape shown in fig. 4. In the case of a circular shape, the diffusion tends to be substantially uniform in all directions. In the case of the X-shape, diffusion of the body fluid in the direction along the center line L is suppressed, and diffusion in an oblique direction is facilitated. In the case of a rhomboid or the like, the diffusion of the body fluid is easily guided in the oblique direction (direction toward the apex) in the shape of the high squeezing portion 13 a. In addition, the rhombus is preferably configured such that a square having one side arranged along the width direction is inclined by 45 °, that is, configured such that an arbitrary diagonal line of the rhombus is arranged along the center line L, so that diffusion of the body fluid in a direction along the center line L (from the proximal end side to the distal end side of the body fluid discharge portion corresponding region H) is suppressed, and diffusion of the body fluid in directions on both sides of the center line L is easily guided.

The high squeezing portion 13a disposed in the collecting portion 13 may be formed to have substantially the same area as the high squeezing portions disposed in other portions, but is preferably formed to have a larger area than the high squeezing portions disposed in other portions. This can strengthen the function of the liquid collecting portion 13 as a barrier, and can prevent the body fluid from transferring from the proximal end side to the distal end side of the body fluid discharge portion corresponding region H through the liquid collecting portion 13.

The liquid diffusion portion 14 has a function of diffusing the body fluid collected in the liquid collection portion 13 toward both sides of the center line L. This makes it possible to disperse the direction of the body fluid spreading outward from the body fluid discharge portion corresponding region H (the direction of the body fluid spreading substantially along the center line L) in both side directions of the center line L, and thus makes it difficult for the body fluid to spread toward the end of the absorbent body 4, thereby preventing leakage of the body fluid.

The liquid diffusion portion 14 is preferably extended continuously from the liquid collection portion 13 because it can rapidly diffuse the body fluid collected in the liquid collection portion 13. The liquid diffusing portion 14 and the liquid collecting portion 13 being continuous means that the low-squeezing portions are continuous with each other. In the case where a plurality of liquid diffusion sections 14 are disposed on both sides of the center line L as described later, at least 2 liquid diffusion sections 14, 14 may be continuous, and there may be a plurality of liquid diffusion sections 14 disposed separately and discontinuously.

The direction in which the liquid diffusion portion 14 extends may not be parallel to the direction in which the center line L extends. In order to prevent the body fluid from being diffused directly from the liquid guide portion 12 to the liquid diffusion portion 14 while making it difficult for the body fluid to diffuse toward the end of the absorbent body 4 and in proximity to the liquid guide portion 12, the direction in which the liquid diffusion portion 14 extends preferably has a predetermined angle with respect to the center line L. Specifically, the angle may be 30 ° to 150 °, preferably 60 ° to 120 °, with respect to the center line L.

The liquid diffusion portion 14 may be arranged to extend from the liquid collecting portion 13 by only 1 piece toward both sides of the center line L, but preferably extends in a plurality of different directions. This allows the body fluid collected in the liquid collecting portion 13 to be rapidly diffused along the liquid diffusion portion 14 on both sides, and prevents the body fluid from overflowing the liquid collecting portion 13 and diffusing toward the end of the absorbent body 4. The number of the liquid diffusion sections 14 may be 2 as shown in fig. 4, 3 as shown in fig. 7, or 4 or more as shown in the drawings.

The planar shape of the liquid diffusion portion 14 is any shape such as a straight line, a curved line, a broken line, or a wavy line, but in order to facilitate diffusion of the body fluid along the liquid diffusion portion 14, when a plurality of liquid diffusion portions 14 and … are arranged on both sides of the center line L as in the illustrated example, the area of the region surrounded by the liquid diffusion portion 14 is increased, and a larger amount of the body fluid can be held in the region, and a curved line as illustrated in fig. 4 and 7 is preferable. In particular, in the case where a plurality of liquid diffusion portions 14 and … are arranged on both sides of the center line L as shown in fig. 4 and 7, it is preferable that at least the liquid diffusion portion 14 arranged on the proximal end side closest to the body fluid discharge portion corresponding region H is formed in a curve bulging toward the body fluid discharge portion corresponding region H, and at least the liquid diffusion portion 14 arranged on the distal end side closest to the body fluid discharge portion corresponding region H is formed in a curve bulging toward the distal end side of the body fluid discharge portion corresponding region H. This increases the area of the region surrounded by the liquid diffusion sections 14 and 14, and thus more body fluid can be held in the region.

In the case where a plurality of liquid diffusing portions 14 and … are arranged on both sides of the center line L, as shown in fig. 4 and 7, the distal end portions (portions on the outer side in the width direction) of the liquid diffusing portions 14 and 14 arranged on the proximal end side and the distal end side of the region H corresponding to the body fluid discharge portion are preferably formed so that the distance of separation therebetween gradually decreases as the liquid diffusing portions are separated from the liquid collecting portion 13. This makes it easy for the body fluid diffused to the tip of the liquid diffusion portion 14 to stay in the region surrounded by the liquid diffusion portions 14 and …, and prevents further outward diffusion. As a result, the leakage prevention effect of preventing leakage from the end of the absorbent body 4 can be improved.

As shown in fig. 7 and 8, at least 2 liquid diffusing parts 14, 14 of the plurality of liquid diffusing parts 14, … extending to both sides of the center line L may be connected (connected) at the tip end part. By connecting at the distal end portions, the 2 liquid diffusing portions 14, 14 form a closed loop shape, and body fluid is more likely to stay in the loop.

In order to facilitate retention of body fluid in the region surrounded by the plurality of liquid diffusing portions 14 and …, as shown in fig. 8, the pressure region 15 may be provided in all or a part of the region surrounded by the plurality of liquid diffusing portions 14 and …, and in the illustrated example, the entire region (hatched region in the drawing). The pressing area 15 is a recessed area as follows: the liquid diffusion layer is formed to have a depth substantially equal to or less than the depth of the low compressed portion of the liquid diffusion layer 14, and is preferably formed so as to be recessed integrally from the surface on the front sheet 3 side to at least the absorbent body 4, and from the front sheet 3 to the absorbent body 4. Accordingly, the inter-fiber space of the compressed region 15 is smaller than the inter-fiber space of the region outside the liquid diffusion portion 14, and the body fluid is likely to be retained in the compressed region 15 by capillary action.

In the example shown in fig. 1, the plane pattern of the leakage preventing squeezing portions 11 is formed to be substantially bilaterally symmetrical with respect to the center line L, and the center line L is provided at a position substantially coincident with a longitudinal center line passing through the widthwise center portion of the sanitary napkin 1 on each of the front and rear sides of the body fluid discharge portion corresponding region H. This can prevent the body fluid diffused from the body fluid discharge portion corresponding region H toward the front and rear from leaking from the front and rear ends of the absorbent body 4, i.e., so-called front and rear leaks. When the plane pattern of the leakage preventing squeezing portion 11 is formed to be symmetrical to the left and right with respect to the center line L, the effect is remarkable in a posture where the body position of the wearer is substantially symmetrical to the left and right, such as a standing position, a seat, and a supine position.

The leakage preventing squeezing part 11 may be provided only on one of the front side and the rear side of the body fluid discharge part corresponding region H, and not on the other side. In addition, a plurality of the leak-preventing squeezing portions 11 may be arranged in series or in parallel in each region. The body fluid discharge portion-corresponding region H may be disposed on either side of the region H and in any one of the oblique directions.

On the other hand, as shown in fig. 9, the plane pattern of the leakage preventing press part 11 may be formed to be asymmetrical to the left and right with respect to the center line L. In this case, the placement of the leakage preventing squeezing portions 11 is preferably placed at a position in the oblique direction of the body fluid discharge portion corresponding region H (a position in which the center line L of the leakage preventing squeezing portions 11 does not overlap with the longitudinal center line extending in the longitudinal direction at the widthwise central portion of the sanitary napkin 1 and is inclined at a predetermined angle with respect to the longitudinal center line) as in the illustrated example. Thus, the both sides of the center line L can be made to have different functions such that the portion disposed on the side of the sanitary napkin 1 with respect to the center line L is formed into a pattern suitable for catching the body fluid diffused from the body fluid discharge portion corresponding region H in the width direction of the sanitary napkin 1, and the portion disposed on the center of the sanitary napkin 1 with respect to the center line L is formed into a pattern suitable for catching the body fluid diffused from the body fluid discharge portion corresponding region H in the longitudinal direction of the sanitary napkin 1. For example, in the example shown in fig. 9, in the liquid diffusion portion 14, the distance separating the liquid guide portion 12 and the liquid diffusion portion 14 is increased in the portion on the side of the sanitary napkin 1 with respect to the center line L as compared with the portion on the center side of the center line L, and the body fluid guided by the liquid guide portion 12 is less likely to migrate to the liquid diffusion portion 14. Accordingly, since the body fluid flowing to the side of the body fluid discharge portion corresponding region H is reliably collected in the collecting portion 13 by the fluid guide portion 12 and then dispersedly diffused to the plurality of fluid diffusion portions 14 and …, the amount of diffusion of the body fluid to the side of the absorbent body 4 can be reliably reduced. In the case of forming the left-right asymmetrical pattern, when the body fluid is likely to spread laterally when the wearer is in a specific body position such as a lateral recumbent position, the effect of suppressing the spread of the body fluid can be further improved. Further, the number of the diffusing portions 14 arranged on the center side of the sanitary napkin 1 with respect to the center line L may be relatively increased to further reduce the amount of diffusion of the body fluid to the side of the absorbent member 4, which is not shown.

In the sanitary napkin 1 having the above-described structure, the liquid guide portion 12 collects the body fluid, which has diffused outward from the body fluid discharge portion corresponding region H, in the liquid collection portion 13, and then diffuses the body fluid along the liquid diffusion portions 14 and … toward both sides of the center line L in the leakage preventing squeezing portions 11. Therefore, by providing the leakage preventing squeezing portions 11, the diffusion direction of the body fluid diffused from the body fluid discharge portion corresponding region H can be controlled to be different from the direction toward the end of the absorbent body 4 (the direction in which the center line L extends), and therefore, leakage from the end of the absorbent body 4 can be prevented.

Further, as shown in fig. 4, even when the liquid guide portion 12 cannot guide the fluid to the pooling portion 13 and the body fluid crosses the liquid guide portion 12 and diffuses, since the plurality of liquid diffusing portions 14 and … are arranged on the distal end side of the body fluid discharge portion corresponding region H, the liquid diffusing portions 14 and … function as a bank to block diffusion of the body fluid, and the body fluid can be suppressed from diffusing to the distal end side of the body fluid discharge portion corresponding region H with respect to the leakage preventing squeezing portion 11.

[ other modes for example ]

In the above-described embodiment example, the so-called sanitary napkin 1 for daily use in which the body fluid discharge portion corresponding region H is provided at the substantially central portion of the sanitary napkin 1 has been described as an example, but as shown in fig. 10 to 12, a so-called sanitary napkin 1 for night use may be employed, the sanitary napkin 1 for night use being configured by a crotch region, a front region, and a rear region, the body fluid discharge portion corresponding region H provided with the wing-like flaps W, W at both side portions being located in the crotch region, the front region being a region from the crotch region to the front end of the sanitary napkin 1, the front region covering the wearer's abdomen when worn, the rear region being a region from the crotch region to the rear end of the sanitary napkin 1, the rear region being a region covering the wearer's buttocks when worn, the rear region being formed longer in the sanitary napkin longitudinal direction than the front region, a pair of left and right hip-holding flaps W extending outward in the width direction are formed on both sides of the rear region_B、W_B。

In fig. 10, the leakage preventing squeezing portion 11 is provided in the front region, which is the front region, of the body fluid discharge portion corresponding region H, and is not provided in the rear region. By providing the leakage preventing squeezing portion 11 on the front side of the body fluid discharge portion corresponding region H, the diffusion of body fluid in the longitudinal direction of the sanitary napkin can be suppressed in the front region narrower than the rear region, and leakage from the front end can be prevented.

In fig. 11 and 12, the leakage preventing squeezes 11 are provided in 1 piece in each of the front and rear sides of the body fluid discharge portion corresponding region H, that is, in the region from the crotch region to the front region and the rear region. Particularly, the leak-proof presser 11 provided in the rear region is preferably arranged to be in contact with the hip-holding flap W_BThe maximum width position (hip holding flap W)_BTo the outermost side in the width directionThe projected positions, the positions shown by the one-dot chain lines in the figure) overlap. Thus, even when a part of the body fluid diffused in the longitudinal direction is diffused in the width direction by the leakage preventing squeezing part 11, the hip holding flap W_BSince the liquid crystal display device extends over a wide range in the width direction, leakage from the edge in the width direction can be prevented. The leak-proof pressing part 11 provided in the rear region is arranged to be in contact with the hip holding flap W_BWhen the maximum width positions of (1) and (2) are overlapped with each other, (1) the collecting portion 13 of the leakage preventing pressing portion 11 may be arranged to overlap with the maximum width position as shown in fig. 11, or (12) the liquid guiding portion 12 of the leakage preventing pressing portion 11 may be arranged to overlap with the maximum width position as shown in fig. 12. In the case of the former (1), even if the body fluid collected in the collection part 13 is spread in the width direction along the liquid diffusion part 14, the body fluid is retained by the hip part retaining flap W_BThe maximum width position of the second member, leakage from the widthwise edges can be more reliably prevented. In the case of the latter (2), even if the body fluid spreads outward in the width direction along the fluid guide section 12, the flap W for holding the buttocks is used_BThe maximum width position of the second member, leakage from the widthwise edges can be more reliably prevented.

The leakage preventing squeezing part 11 may be provided only on the rear side of the body fluid discharge part corresponding region H, that is, the rear side region, but not on the crotch region and the front side region. In fig. 10 to 12, in the extrusion portion composed of the low extrusion portion and the high extrusion portion, the high extrusion portion is illustrated by a black portion and the outer edge of the low extrusion portion is not illustrated.

Hereinafter, preferred embodiments of the present invention will be described.

(attached note 1)

As a means of supplementary note 1, in an absorbent article including at least an absorbent body, a leakage prevention compressed part formed in a predetermined pattern outside a region corresponding to a body fluid discharge part, the leakage prevention compressed part being constituted by at least a depressed part depressed from the absorbent body, and preventing leakage from an end of the absorbent body by changing a direction of diffusion of a body fluid diffused from a region corresponding to the body fluid discharge part of a wearer, the leakage prevention compressed part including: liquid guide portions which are respectively disposed on both sides of a center line extending from a proximal end side to a distal end side of the region corresponding to the body fluid discharge portion, and which have portions in which a distance of separation from each other across the center line decreases from the proximal end side to the distal end side of the region corresponding to the body fluid discharge portion, and which guide the body fluid spreading outward from the region corresponding to the body fluid discharge portion toward the center line side; a liquid collection unit that is positioned on the center line on the distal end side of the region corresponding to the body fluid discharge unit with respect to the liquid guide unit and collects the body fluid guided by the liquid guide unit; and liquid diffusion sections which extend from the liquid collection section to both sides of the center line, respectively, and diffuse the collected body fluid to both sides of the center line.

In the above-mentioned means of note 1, in order to prevent leakage from the end of the absorbent body by changing the direction of diffusion of the body fluid that diffuses outward from the region corresponding to the body fluid discharge portion of the wearer (body fluid discharge portion-corresponding region), the leakage-preventing squeezing portions are formed in a predetermined pattern outside the region corresponding to the body fluid discharge portion. The pattern of the leak-proof pressing portion includes: liquid guide portions which are respectively arranged on both sides of a center line extending from a proximal end side to a distal end side of the region corresponding to the bodily fluid discharge portion and have portions in which a distance separating the center line from each other decreases from the proximal end side to the distal end side of the region corresponding to the bodily fluid discharge portion; a liquid collection part located on the center line on the distal end side of the region corresponding to the body fluid discharge part with respect to the liquid guide part; and liquid diffusion portions extending from the liquid collecting portion to both sides of the center line. In the leakage preventing press part formed in such a pattern, the body fluid diffused outward from the region corresponding to the body fluid discharge part is guided toward the center line side of the leakage preventing press part by the fluid guide part, and after the body fluid guided by the fluid guide part is collected in the liquid collecting part, the collected body fluid is diffused toward both sides of the center line by the fluid diffusion part. Therefore, by providing the leakage-preventing pressing portion with such a pattern, the diffusion direction of the body fluid diffused from the body fluid discharge portion corresponding region changes in a direction different from the direction toward the end portion of the absorbent body, that is, in a direction different from the direction in which the center line extends. Further, even when there is a body fluid that cannot be guided to the pooling portion by the fluid guide portion and diffuses across the fluid guide portion toward the distal end side from the region corresponding to the body fluid discharge portion, the fluid diffusion portion functions as a bank and reliably blocks the body fluid, and diffusion toward the end portion of the absorbent body can be prevented.

(attached note 2)

As a means of supplementary note 2, there is provided the absorbent article of supplementary note 1, wherein the leakproof pressing portion is disposed at least on one or both of the front side and the rear side of the region corresponding to the bodily fluid discharge portion.

In the embodiment of supplementary note 2, the leakage preventing squeezing portions are disposed at least on one or both of the front side and the rear side of the region corresponding to the body fluid discharge portion, whereby leakage from the front and rear end portions of the absorbent body can be prevented.

(attached note 3)

As a means of supplementary note 3, there is provided the absorbent article of supplementary note 1 or 2, wherein the liquid guiding parts are separately disposed on both sides of the center line.

In the aspect of the above-mentioned supplementary note 3, by disposing the liquid guiding parts separately on both sides of the center line, the body fluid spreading outward from the region corresponding to the body fluid discharge part is likely to spread directly to the liquid collecting part through the separated parts of the liquid guiding parts on both sides.

(attached note 4)

As means of supplementary note 4, there is provided the absorbent article as described in any one of supplementary notes 1 to 3, wherein the liquid guiding part is disposed continuously or separately from the liquid collecting part.

In the aspect of supplementary note 4, when the liquid guide portion and the liquid collecting portion are arranged in series, the body fluid is easily transferred from the liquid guide portion to the liquid collecting portion. On the other hand, when the squeezing portions are disposed separately from each other, since the non-squeezing portions having a large space between fibers are present between the liquid guiding portion and the liquid collecting portion, the transfer of the body fluid from the liquid guiding portion to the liquid collecting portion becomes slow, and the body fluid can be prevented from rapidly collecting in the liquid collecting portion.

(attached note 5)

As an aspect of supplementary note 5, there is provided the absorbent article according to any one of supplementary notes 1 to 4, wherein the liquid guiding part is formed such that an average density of the fibers gradually increases as approaching the center line.

In the aspect of supplementary note 5, the liquid guide portion is formed such that the average density of the fibers gradually increases as the fibers approach the center line, whereby the body fluid is likely to flow toward the center line by capillary action of the fibers. Increasing the average density of the fibers as they approach the centerline can be accomplished by: the liquid guide portion is composed of a low squeezing portion and a high squeezing portion, and the interval between the high squeezing portions is gradually narrowed as approaching the center line.

(attached note 6)

As a means of supplementary note 6, there is provided the absorbent article as described in any one of supplementary notes 1 to 5, wherein the liquid collecting part has a low squeezing part and a high squeezing part, and the planar shape of the high squeezing part is formed in any one of a circular shape, an X shape, and a rhombic shape.

In the embodiment of supplementary note 6, the high-pressure portion is formed in a predetermined planar shape so as to easily disperse and diffuse the body fluid collected in the liquid collecting portion to the liquid diffusing portion.

(attached note 7)

As means of supplementary note 7, there is provided the absorbent article as described in any one of supplementary notes 1 to 6, wherein the plurality of liquid diffusion portions extend from the liquid collecting portion to both sides of the center line in different directions.

In the aspect of the above-mentioned note 7, since the plurality of liquid diffusion portions are formed to extend from the liquid collecting portion to both sides of the center line in different directions, the body fluid collected in the liquid collecting portion is easily diffused to both sides of the center line in a plurality of directions, and diffusion of the body fluid along the liquid diffusion portions is easily caused.

(attached note 8)

As a means of supplementary note 8, there is provided the absorbent article of supplementary note 7, wherein at least 2 of the liquid diffusing parts extending to both sides of the center line are connected at a distal end portion.

In the aspect of supplementary note 8, at least 2 liquid diffusion portions of the plurality of liquid diffusion portions extending to both sides of the center line are connected at the distal end portion, whereby the body fluid is easily diffused into the at least 2 liquid diffusion portions formed in a ring shape, and the body fluid can be suppressed from being further diffused outward.

(attached note 9)

As a means of supplementary note 9, there is provided the absorbent article as described in any one of supplementary notes 1 to 8, wherein the press part for leakage prevention is formed so as to be bilaterally symmetrical or bilaterally asymmetrical with respect to the center line.

In the aspect of the supplementary note 9, when the leakage preventing squeezing portions are formed to be symmetrical with respect to the center line, the effect of suppressing the diffusion of the body fluid can be enhanced in the body position such as the standing position, the seat position, and the supine position of the wearer, and when the leakage preventing squeezing portions are formed to be asymmetrical with respect to the left and right, the effect of suppressing the diffusion of the body fluid can be enhanced in the specific body position such as the lateral position of the wearer.

The present application claims priority based on japanese patent application No. 2018-048764, filed by the japanese patent office on 3, 16, 2018, the entire contents of which are incorporated herein by reference.

Description of the reference symbols

1 … sanitary napkin, 2 … back sheet, 3 … front sheet, 4 … absorber, 5 … cover sheet, 6 … second sheet, 7 … side nonwoven fabric, 10 … squeezing part for body fluid discharge part, 11 … leakage prevention squeezing part, 12 … liquid guiding part, 13 … liquid collecting part, 14 … liquid diffusing part, 15 … squeezing area, H … body fluid discharge part corresponding area, L … center line.