JP2004236775A - Underpants type menstrual napkin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underpants type menstrual napkin that can further suppress a leakage. <P>SOLUTION: This underpants type menstrual napkin 50 is constituted by arranging elastic rear leg members 36a and 36b roughly along a pair of left and right leg openings 30a and 30b from the rear body 13 of the napkin 50 to the front body 10 of the napkin 50 and, at the same time, elastic front leg members 34a and 34b in the front body 10. In addition, the position of the narrowest part 43, in which the width between the leg openings 30a and 30b becomes the minimum, of the napkin 50 is selected so that the narrowest part 43 may be positioned between the longitudinal center line L1 of the napkin 50 and a virtual line Lb drawn in parallel with the center line L1 through the end sections of the rear leg members 36a and 36b on the front body 10 side and another virtual line Lf drawn in parallel with the center line L1 through the end sections of the front leg sections 34a and 34b on the rear body 13 side when the napkin 50 is held in an expanded and tensioned state. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sanitary napkin, and particularly to a pant-type sanitary napkin.
[0002]
[Prior art]
Since sanitary napkins are generally used on the inside of underwear, the absorbent body may be displaced or twisted due to changes in the wearer's posture, which contributes to leakage of menstrual blood. It has become. When the absorber is displaced or twisted, leakage may occur even if the absorber is sufficiently large. In particular, since the sanitary napkin is not exchanged during sleep, the position of the absorbent body and the dripping overlap during this period, and leakage is likely to occur.
[0003]
As a sanitary napkin suitable for use during sleeping or when there is a large amount of menstrual blood, a pant-type (shorts-type) sanitary napkin has recently been developed, and the product name is "Lorie Shorts! Super Guard" Is commercially available. By making the sanitary napkin into a pants-type, it becomes easy to suppress the occurrence of displacement and wrinkles in the absorbent body.
[0004]
In this pant-type sanitary napkin, leg elastic members are arranged in a front body and a back body substantially along a pair of left and right leg openings through which the wearer's lower limb is passed, and arranged in the back body The leg elastic member crosses between a pair of left and right leg openings so as to substantially cross the wearer's menstrual blood excretion point.
[0005]
By disposing the above-described leg elastic member, it is possible to suppress leakage (side leakage) from the flange portion and its vicinity. In addition, since the leg elastic member is provided so as to substantially cross the menstrual blood excretion point, the fit at the menstrual blood excretion point is improved, so that leakage is also suppressed from this point.
[0006]
As trouser-type absorbent articles, diapers for infants and adults have been developed in the past, and many of the diapers are described in, for example, JP-A-8-280738 and JP-A-11-332911. As described above, the leg elastic member is disposed obliquely in the crotch portion, or the urine pocket is formed by intersecting the leg elastic member from the front body and the leg elastic member from the back body, etc. Prevents deformation and leakage from around the legs.
[0007]
[Patent Document 1]
JP-A-8-280738
[Patent Document 2]
JP-A-11-332911
[0008]
[Problems to be solved by the invention]
However, since menstrual blood is red, the user becomes nervous with respect to the leakage, and the leakage prevention performance required for the pant-type sanitary napkin is very high. It is necessary to make further improvements.
[0009]
Then, this invention makes it a subject to provide the underpants type sanitary napkin which can further suppress the leakage of menstrual blood.
[0010]
[Means for Solving the Problems]
The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.
[0011]
In one aspect of the present invention, the front body (10) located on the stomach side of the wearer and the back body (13) located on the back side are separated by a longitudinal center line (L1) when worn, A waist opening (20) through which the wearer's torso is passed, and a pair of left and right leg openings (30a, 30b) through which the wearer's lower limb is passed, by joining and fixing both side edges of the back body A pant-type sanitary napkin (50, 60, 70) having an absorbent body (5) on the inner surface side, which is disposed in the front body substantially along the leg opening and the leg opening Front leg elastic members (34a, 34b, 64) forming leg gathers (38a, 38b) around the part, and the leg openings arranged substantially along the leg openings from the back to the front Rear part forming leg gathers around the part Imaginary line (Lf) passing through the rear body direction end of the front leg elastic member in parallel with the longitudinal center line, and the rear leg elastic member An imaginary line (Lb) that passes through the front body end of the front body exists in the front body, and the width between the pair of leg openings is minimized between the two imaginary lines and the longitudinal center line. A pants-type sanitary napkin characterized in that the narrowest part (43) is located is provided to solve the above problem.
[0012]
Absorbing while maintaining good fit to the menstrual blood excretion point by selecting the position of the front leg elastic member and the rear leg elastic member and the position of the narrowest part as described above. Leakage can be suppressed by improving the absorption efficiency of menstrual blood by the body and improving the coverage of the body surface by the absorber. As a result, it is possible to obtain a pant-type sanitary napkin in which leakage is further suppressed. Moreover, this pants-type sanitary napkin is excellent in the wearer's wearing feeling.
[0013]
Such an operation and gain of the present invention will be clarified from the embodiments described below.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the pant-type sanitary napkin of the present invention will be specifically described with reference to the drawings.
[0015]
<First Embodiment>
FIG. 1 is a perspective view schematically showing a pant-type sanitary napkin according to the first embodiment. The illustrated pant-type sanitary napkin 50 is fixed on the surface sheet 1 applied to the body surface of the wearer, the exterior sheet 3 that becomes the outer surface when worn, and the inner surface of the exterior sheet 3, and is covered by the surface sheet 1. The front body 10 located on the abdomen side of the wearer and the back body 13 located on the back side are joined to each other at the left and right side edges at the time of wearing, and the side seal portion 15a. , 15b. When the pant-type sanitary napkin 50 is worn, the side seal portion 15a is positioned on the wearer's right body side, and the side seal portion 15b is positioned on the wearer's left body side portion. In addition, in FIG. 1, the outline of the absorber 5 is represented with the dashed-two dotted line for convenience.
[0016]
Around the waist opening 20 through which the wearer's torso is passed, a waist elastic member 22 is arranged over the entire circumference of the waist in order to improve fit to the wearer's waist, and a waist gather 24 is formed. Has been. In addition, below the region where the waist elastic member 22 is disposed, a plurality of body elastic members 26 are disposed over the entire circumference of the waistline in order to improve the fit of the wearer to the body part. 28 is formed. Between the leg openings 30a and 30b (only the leg opening 30b appears in FIG. 1) through which the wearer's lower limb is passed, in order to improve the fit to the wearer's lower abdomen or buttocks, A plurality of lower elastic members 32 are arranged on each of the front body 10 and the back body 13. All of these elastic members are disposed between the top sheet 1 and the exterior sheet 3.
[0017]
In order to improve the fit from the wearer's neck to the thigh, and to improve the fit at the menstrual blood excretion point, around the leg openings 30a and 30b, the topsheet 1 and Three each of the first front leg elastic member 34a, the second front leg elastic member 34b, the first rear leg elastic member 36a, and the second rear leg elastic member 36b are disposed between the outer sheet 3 and the exterior sheet 3. Yes.
[0018]
The first front leg elastic member 34 a extends from the lower part of the side seal 15 a to the lower part of the front body 10 substantially along the leg opening 30 a, and is not arranged on the rear body 13. Similarly, the second front leg elastic member 34b extends from the lower part of the side seal 15b to the lower part of the front body 10 along the leg opening 30b, and is not disposed on the rear body 13.
[0019]
On the other hand, the first rear leg elastic member 36a extends along the leg opening 30a from the lower part of the side seal 15a through the rear body 13 to the lower part of the front body 10, and the first front leg elastic member 34a. Cross with each other. Further, the second rear leg elastic member 36b extends from the lower part of the side seal 15b through the rear body 13 to the lower part of the front body 10 along the leg opening 30b, and each of the second front leg elastic members 34b. Intersects.
[0020]
A first leg gather 38a is formed around the leg opening 30a by the first front leg elastic member 34a and the first rear leg elastic member 36a arranged around the leg opening 30a. Similarly, a second leg gather 38b is formed around the leg opening 30b by a second front leg elastic member 34b and a second rear leg elastic member 36b arranged around the leg opening 30b. .
[0021]
The biggest characteristic of the pant-type sanitary napkin 50 is the arrangement of the first front leg elastic member 34a, the second front leg elastic member 34b, the first rear leg elastic member 36a, and the second rear leg elastic member 36b, In addition, the width between the leg opening 30a and the leg opening 30b is at the position of the narrowest portion where the width is minimum. Hereinafter, the position of the narrowest part and the arrangement of the leg elastic members 34a, 34b, 36a, 36b will be described in detail with reference to FIGS. 2 (A) and 2 (B).
[0022]
FIG. 2 (A) shows the side seal portions 15a and 15b of the pant-type sanitary napkin 50 shown in FIG. It is the schematic when it sees from the side applied to a wearer's body surface sometimes, and FIG.2 (B) is the schematic of the cross section in the position of the said narrowest site | part of FIG. 2 (A).
[0023]
In FIG. 2A, the side seal portions 15a and 15b are smudged so that the positions of the peeled side seal portions 15a and 15b can be easily understood. Here, the “tensed state” in the present specification means a state in which there is substantially no deformation due to contraction of each elastic member constituting the pant-type sanitary napkin.
[0024]
As shown in FIG. 2B, a liquid-impermeable leak-proof sheet 6 is disposed on the exterior sheet 3 side of the absorbent body 5.
[0025]
As shown in FIG. 2 (A), the pant-type sanitary napkin 50 under tension is a shape in which the baying portions 40a and 40b for forming the leg openings 30a and 30b are formed at the center of both long sides of the rectangle. Presents. This pant-type sanitary napkin 50 is predecessor by a center line L1 (hereinafter, referred to as “longitudinal direction center line L1”) that bisects in a longitudinal direction (hereinafter referred to as “longitudinal direction D1”) indicated by an arrow D1. It is divided into around 10 and back body 13.
[0026]
In the crotch part of the wearer, the rear body direction ends of the front leg elastic members 34a and 34b are respectively in the front body 10 and extend to a region where the absorber 5 is located. Moreover, the front body direction edge part of the rear leg elastic members 36a and 36b is also in the front body 10 and extends to the region where the absorber 5 is located. The front leg elastic member 34a and the rear leg elastic member 36a intersect each other in the region where the absorber 5 exists. Similarly, the front leg elastic member 34b and the rear leg elastic member 36b also exist in the region where the absorber 5 exists. Crossed.
[0027]
In the present invention, the crotch portion refers to a position where a leg opening is formed. In addition, the “rear body direction end portion” referred to for the front leg elastic member means the position on the most rear body side among all the front leg elastic members, and the “rear body direction end” referred to for the rear leg elastic member. “Part” means the part on the most front body side of all the rear leg elastic members.
[0028]
An imaginary line Lf parallel to the longitudinal center line L1 and passing through the rear body end portions of the front leg elastic members 34a and 34b, and a front body direction of the rear leg elastic members 36a and 36b parallel to the longitudinal center line L1 An imaginary line Lb passing through the end exists in the front body 10, and between the two imaginary lines Lf and Lb and the longitudinal center line L1 in plan view, the leg opening 30a and the leg opening 30b The narrowest part where the width between them is the smallest is located. In FIG. 2A, the narrowest part (hereinafter referred to as “the narrowest part 43”) is indicated by a solid line 43 with arrows at both ends.
[0029]
When the positional relationship between the narrowest portion 43 and the front and rear leg elastic members 34a, 34b, 36a, 36b is selected as described above, the following technical effects (1) to (2) can be obtained.
(1) At the narrowest part 43 and its periphery, the fit to the heel part and its periphery is improved while keeping the fit of the absorbent body 5 to the body well, so that side leakage is suppressed. .
(2) Since the deformation of the absorbent body 5 occurring on the back body 13 side from the narrowest part 43 is alleviated, the absorption efficiency of the absorbent body 5 and the coverage with the body surface are improved, and leakage is suppressed.
[0030]
Further, in the region where the absorber 5 is present, the left and right front leg elastic members 34a and 34b are separated from each other, and similarly, the left and right rear leg elastic members 36a and 36b are also separated from each other. The effect of (2) is further improved.
[0031]
Generally, menstrual blood excretion points are located in the front body 10 from the longitudinal center line L1. Therefore, by selecting the position of the narrowest part 43 as described above, the above-mentioned (2) from the menstrual blood discharge point to the back body is obtained while obtaining the technical effect (1) in the vicinity of the menstrual blood excretion point. ) Technical effects can be obtained.
[0032]
In many cases, the excretion point of menstrual blood is approximately 30 to 50 mm away from the longitudinal center line L1 shown in FIG. A rough distribution range of menstrual blood excretion points is schematically shown by a two-dot chain line ellipse 45 in FIG.
[0033]
In order to suppress leakage and prevent individual differences from occurring in the leakage suppression effect, the distance between the narrowest portion 43 and the longitudinal center line L1 is preferably approximately 30 to 60 mm, approximately 35. More preferably, it is set to ˜50 mm.
[0034]
In addition, the distance between the virtual line Lf, Lb that is closer to the longitudinal center line L1 (the imaginary line Lf in the illustrated example) and the longitudinal center line L1 should be approximately 70 mm or more. It is more preferable, and it is still more preferable to be about 75-100 mm. The same applies to the distance between the remaining one virtual line (the virtual line Lb in the illustrated example) and the longitudinal center line L1.
[0035]
As shown in FIG. 2A, the absorbent body 5 has the above-described range 45 within a plan view, and the longitudinal direction of the absorbent body 5 is substantially parallel to the longitudinal direction D1 of the pant-type sanitary napkin 50. Thus, it is preferable to arrange the pant-type sanitary napkin 50 at a substantially central portion. Moreover, since leakage is more likely to occur in the back body 13 than in the front body 10, it is preferable that the absorber 5 has a sufficient length on the back body 13 side.
[0036]
The top sheet 1 is a liquid-permeable sheet that can pass menstrual blood to the absorbent body 5, and examples of such a sheet include a nonwoven fabric and a plastic film with holes.
[0037]
As the exterior sheet 3, for example, a conventional one can be used without limitation, and the material thereof is a sheet made of a liquid-impermeable film with moisture permeability, a composite material of a film and a nonwoven fabric, or water-repellent. Nonwoven fabric etc. are mentioned.
[0038]
As the absorbent body 5, a material that can absorb menstrual blood, such as a pulp mainly mixed with a superabsorbent polymer, a material in which these are surrounded by a paper called a mount, or a nonwoven fabric laminated, is used. .
[0039]
As the elastic member, thread rubber, flat rubber, film type rubber or the like is used.
[0040]
The material which comprises the underpants type sanitary napkin of this invention is not limited to the above-mentioned material, For example, a conventional thing can be used without a restriction | limiting.
[0041]
Next, the suitable method for manufacturing the underpants type sanitary napkin of this invention is demonstrated.
[0042]
First, a continuous web for the exterior sheet 3 (meaning a material for the exterior sheet, which is unwound from a roll-like state in the production line and continuously supplied. The same applies hereinafter). Further, the elastic member for the waist elastic member 22 and the elastic member for the trunk elastic member 26, which are sprayed with hot melt adhesive and separately coated with the hot melt adhesive, are continuously supplied to the required positions while being stretched. The elastic members for the front and rear leg elastic members 34a, 34b, 36a, 36b to which the hot melt type adhesive is applied are continuously supplied, and along the baying portions 40a, 40 for the leg openings. While being stretched so that it becomes, it is rocked and fixed.
[0043]
The absorbent body 5 on which the leak-proof sheet 6 is arranged is sequentially spaced by a hot melt adhesive so that the longitudinal direction of the absorbent body 5 is orthogonal to the continuous web flow direction (MD direction). The continuous web for the top sheet 1 is overlapped on the uppermost surface so as to cover the absorbent body 5 and joined to the continuous web for the exterior sheet 3.
[0044]
Next, the portions that become the bay entrances 40a and 40b for the leg openings are cut out, each web is folded in two along the flow direction center line (longitudinal center line L1), and the webs are sealed between the absorbent bodies 5 Then, the side seal portions 15a and 15b are formed, and finally, the pants type sanitary napkin 50 is manufactured by cutting off the seal portions.
[0045]
In the above manufacturing method, it is preferable to perform swinging of the elastic members for the front and rear leg elastic members, cutting out of the bay entrance, and the like so that the front body and the back body are alternately reversed in adjacent napkins. By continuously manufacturing the napkin so that the front and back bodies are alternately reversed, the consumption of the elastic member for the leg elastic member becomes equal on both sides in the width direction (CD direction) of the production line, resulting in a production loss. In addition, since the swinging of the elastic member for the leg elastic material is alternately performed, a force works substantially uniformly in the flow direction, and the web running stability during manufacturing (cut opening of the leg opening, In addition to excellent foldability and device wear prevention, it is possible to increase the accuracy of product shape and dimensions.
[0046]
In this embodiment, the elastic member for the leg elastic member is continuously rocked and fixed, and the absorber is disposed. Then, the elastic member is cut from the exterior sheet side by a heat cutter in the region where the absorber is located. The first front leg elastic member 34a and the second leg elastic member 34b are separated into the first rear leg elastic member 36a and the second rear leg elastic member 6b.
[0047]
Second Embodiment
FIG. 3 (A) shows a state in which the side seal portions of the pants-type sanitary napkin of the second embodiment are peeled off and held in a tension state when viewed from the side applied to the wearer's body surface when worn. FIG. 3B is a schematic view of a cross section in the narrowest portion of FIG. 3A.
[0048]
The pant-type sanitary napkin 60 shown in the figure has the arrangement of the front leg elastic member and the rear leg elastic member, the structure and arrangement of the absorber, and the structure of the pant part according to the first embodiment. Is different. Among the constituent members or regions shown in FIG. 3 (A) or FIG. 3 (B), those common to the pant-type sanitary napkin 50 of the first embodiment are shown in FIG. 2 (A) or FIG. 2 (B). The same reference numerals as those used in FIG.
[0049]
As shown in FIG. 3 (B), in the pant-type sanitary napkin 60, the pants part P <b> 1 is configured by the exterior sheet 3 and the interior sheet 9, and the absorbent main body having the absorbent body 5 on the inner side surface of the interior sheet 9. 5A is fixed.
[0050]
The absorbent main body 5A has a surface sheet 1 on the body surface side of the wearer, a liquid-impervious leak-proof sheet 6 on the interior sheet 9 side, and elastic members 7a and sheets 7b constituting side gathers 7 on both sides. The absorber 5 is wrapped by these. The interior sheet 9 can be formed using the same material as the exterior sheet 3 and the top sheet 1.
[0051]
The relative position of the narrowest part 43 in the pant-type sanitary napkin 60 and the relative arrangement of the front leg elastic members 34a and 34b and the rear leg elastic members 36a and 36b with respect to the narrowest part 43 are the first embodiment. However, the imaginary line Lb passing through the front leg direction end portions of the rear leg elastic members 36a, 36b is the rear of the front leg elastic members 34a, 34b. It is located in the back body direction from the imaginary line Lf passing through the end part in the body direction.
[0052]
This pant-type sanitary napkin 60 has the same technical effect as the pant-type sanitary napkin 50 of the first embodiment, and further has an elastic contraction force at the intersection of the front leg elastic member and the rear leg elastic member. It is possible to suppress the deformation of the absorption surface and the generation of folds extending in the width direction, which may occur due to the strong action, and there is also an effect that the fitting property is further improved.
[0053]
<Third Embodiment>
FIG. 4 (A) shows a state in which the side seal portions of the pant-type sanitary napkin of the third embodiment are peeled off and held in a tension state when viewed from the side applied to the wearer's body surface when worn. FIG. 4B is a schematic view of a cross section in the narrowest portion of FIG. 4A.
[0054]
In the pant-type sanitary napkin 70 shown in these drawings, what is common to the pant-type sanitary napkin 50 of the first embodiment and the pant-type sanitary napkin 60 of the second embodiment is shown in FIGS. The same reference numerals as those used are assigned and the description thereof is omitted. The front leg elastic member is given a new reference numeral 64, and the rear leg elastic member is given a new reference numeral 66.
[0055]
As shown in FIG. 4B, in the absorbent main body 5B of the pant-type sanitary napkin 70, a plurality of elastic members 68 are extended outwardly from the absorbent body 5 so as to extend in the longitudinal direction D1. It is fixed. Here, the above “outward” refers to the direction of the exterior sheet side opposite to the side in contact with the wearer, and in the present embodiment, the elastic member is interposed between the absorbent body 5 and the leak-proof sheet. 68 was fixed. Except for this point, the absorbent main body 5B has the same structure as the absorbent main body 5A in the pant-type sanitary napkin 60 of the second embodiment.
[0056]
The structure of the pants part P2 in the pants-type sanitary napkin 70 is the same as the structure of the pants part P1 in the pants-type sanitary napkin 60 of the second embodiment. Cover sheets 14a and 14b are fixed to the body surface side of the wearer from the body part to the waist part in each of the front body 10 and the back body 13 so as to cover the surface of the longitudinal end of the absorbent main body 5B. . These cover sheets 14a and 14b are fixed after the absorption main body 5B is fixed on the inner surface of the interior sheet 9. As the material of the cover sheets 14a and 14b, for example, conventional materials can be used, and specific examples thereof include the same materials as those of the exterior sheet 3 described above.
[0057]
In the pant-type sanitary napkin 70, the shape and arrangement of the front leg elastic member 64 and the rear leg elastic member 66 in the region where the absorber 5 is located are the same as those of the pant-type sanitary napkin 50 of the first embodiment and the second embodiment. This is different from the pants-type sanitary napkin 60.
[0058]
As shown, the pant-type sanitary napkin 70 includes three front leg elastic members 64. Each of the front leg elastic members 64 extends from the lower part of the side seal part 15a on the front body 10 side to the rear body 13 side substantially along the bay portion 40a serving as the leg opening 30a, and then the longitudinal direction D1 and the plane. It extends in the direction D2 orthogonal to the view, and then extends substantially along the bay portion 40b that becomes the leg opening 30b, and reaches the lower portion of the side seal portion 15b on the front body 10 side. In the region where the front leg elastic members 64 extend in the direction D2, the front leg elastic members 64 substantially overlap each other.
[0059]
Similarly, the individual rear leg elastic members 66 extend from the lower portion of the side seal portion 15a on the rear body 13 side to the inside of the front body 10 substantially along the bay portion 40a serving as the leg opening 30a, and then in the longitudinal direction D1. And extending in a direction D2 orthogonal in plan view, and then extending substantially along the baying portion 40b serving as the leg opening 30b and reaching the lower portion of the side seal portion 15b on the rear body 13 side. In the region where the rear leg elastic members 66 extend in the direction D2, the respective rear leg elastic members 66 substantially overlap.
[0060]
As shown in the drawing, the rear body direction end of the front leg elastic member 64 and the front body direction end of the rear leg elastic member 66 are respectively in the front body 10 and positioned above the absorber 5.
[0061]
The relative position of the narrowest part 43 in the pant-type sanitary napkin 70 of the third embodiment and the relative arrangement of the front leg elastic member 64 and the rear leg elastic member 66 with respect to the narrowest part 43 are virtually Except for the relative positional relationship between the line Lf and the virtual line Lb, the pant-type sanitary napkin 50 of the first embodiment is the same as the pant-type sanitary napkin 50 of the first embodiment. The same technical effect as that of the napkin 50 is obtained.
[0062]
Further, in the pant-type sanitary napkin 70, as shown in the figure, the imaginary line Lb passing through the front leg direction end of the rear leg elastic member 66 is the front leg as in the pant-type sanitary napkin 60 of the second embodiment. Since the elastic member 34 is positioned in the rear body direction with respect to the imaginary line Lf passing through the rear body direction end portion of the elastic member 34, the elastic contraction force works strongly at the portion where the front leg elastic member and the rear elastic member intersect. The deformation of a certain absorbing surface and the generation of pleats extending in the width direction can be suppressed, and the effect that the fitting property is further enhanced is also achieved.
[0063]
Further, as described above, since the front leg elastic member 64 and the rear leg elastic member 66 cross the absorber 5 in plan view, the menstrual blood excretion point and the front body 10 side from the excretion point. There is also a technical effect that the fit of the absorbent body 5 to the body surface of the wearer can be enhanced.
[0064]
Furthermore, by providing the elastic member 68 as described above, the absorbent body 5 fits to the wearer's body surface, in particular, the absorbent body at the center in the direction D2 perpendicular to the longitudinal direction D1 in plan view. 5 fit can be improved. Further, the cover sheets 14a and 14b can improve the sense of incongruity caused by the end of the absorbent main body 5B hitting when worn and the prevention of leakage from the waist opening 20.
[0065]
The number of the elastic members 68 can be appropriately selected according to the width and flexibility of the absorbent body 5. Moreover, although the distance between the adjacent elastic members 68 can be suitably changed according to the softness | flexibility etc. of the absorber 5, it is preferable to select within the range of 3-30 mm in general. The length of the elastic member 68 can be appropriately selected within a range of approximately 50 to 90% of the length of the absorbent body 5.
[0066]
The pants-type sanitary napkin according to the first to third embodiments described above has a shape in which the width between the pair of left and right leg openings 30a, 30b is minimized only at one place, but the pants-type of the present invention. The sanitary napkin may have a shape in which the width is minimum in one section extending over a predetermined length in the longitudinal direction D1 (see FIG. 2). In this case, the center of the section Let the part be the “narrowest part”.
[0067]
Further, when the pant-type sanitary napkin has a plurality of rear leg elastic members, the front leg direction end portions of the rear leg elastic members are present in the front body, and further, the front body 10 is located more than the most pinched portion 43. It is preferable to be located closer to the waist opening 20 at.
[0068]
When the front leg elastic member and the rear leg elastic member are separately provided in the left leg opening and the right leg opening as in the pants-type sanitary napkin of the first embodiment or the second embodiment, each leg The end portion on the menstrual blood excretion point side of the elastic member can be bent toward the absorber as shown in FIG. 1 or FIG. If the end of the leg elastic member is bent in this way, the contraction force acting in a direction orthogonal to the longitudinal direction D1 in a plan view can be easily increased, so that the fit of the absorbent body to the wearer's body surface is improved. It becomes easy to let. At this time, the bent end and the absorber may overlap each other in plan view or may be separated from each other in plan view.
[0069]
While the present invention has been described in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein. The invention can be changed as appropriate without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and a pant-type sanitary napkin with such a change is also included in the technical scope of the present invention. Must be understood as.
[0070]
【The invention's effect】
As described above, according to the present invention, a pant-type sanitary napkin that can further suppress leakage is provided. Therefore, according to this invention, it becomes possible to provide the underpants type sanitary napkin which can give a wearer a high sense of security.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a pant-type sanitary napkin according to a first embodiment.
2 (A) is a side view of the pants-type sanitary napkin shown in FIG. 1 that is peeled off and held in tension from the side that is applied to the wearer's body surface when worn. FIG. 2B is a schematic diagram when viewed, and FIG. 2B is a schematic diagram of a cross section at the narrowest portion shown in FIG.
FIG. 3 (A) is a side view of a pants-type sanitary napkin according to a second embodiment in which the side seals are peeled off and held in tension from the side that is applied to the wearer's body surface when worn. FIG. 3B is a schematic diagram when viewed, and FIG. 3B is a schematic diagram of a cross section at the narrowest portion shown in FIG.
FIG. 4 (A) is a side view of a pants-type sanitary napkin according to a third embodiment in which the side seals are peeled off and held in tension from the side that is applied to the wearer's body surface when worn. FIG. 3B is a schematic diagram when viewed, and FIG. 3B is a schematic diagram of a cross section at the narrowest portion shown in FIG.
[Explanation of symbols]
1 Surface sheet
3 exterior sheet
5 Absorber
5A, 5B Absorption body
6 Leak-proof sheet
9 Interior seat
10 Front body
13 Back body
14a, 14b Cover sheet
20 Waist opening
30a, 30b Leg opening
34a, 34b, 64 Front leg elastic member
36a, 36b, 66 Rear leg elastic member
38a, 38b Leg gather
43 Narrowest part
L1 Longitudinal center line
Lf Virtual line passing through the rear body direction end of the front leg elastic member
Lb Virtual line passing through the front body end of the rear leg elastic member
50, 60, 70 Pants-type sanitary napkin
68 Elastic member arranged outside the absorber

Claims (6)

When worn, the front body located on the abdomen side of the wearer and the back body located on the back side are separated by a longitudinal center line, and both side edges of the front body and the back body are joined and fixed, A pant-type sanitary napkin that forms a waist opening through which the torso is passed and a pair of left and right leg openings through which the wearer's lower limb is passed, and is provided with an absorbent on the inner surface side,
A front leg elastic member which is arranged in the front body substantially along the leg opening and forms a leg gather around the leg opening;
A rear leg elastic member arranged from the back body to the front body substantially along the leg opening to form a leg gather around the leg opening;
With
An imaginary line passing through the rear body direction end of the front leg elastic member in parallel with the longitudinal center line and an imaginary line passing through the front body direction end of the rear leg elastic member are present in the front body, 2 A pants-type sanitary napkin characterized in that a narrowest portion where the width between the pair of leg openings is minimum is located between two virtual lines and the longitudinal center line. The pants-type sanitary napkin according to claim 1, wherein a distance between the center line in the longitudinal direction and the narrowest part is within a range of 30 to 60 mm. The underpants type according to claim 1 or 2, wherein an imaginary line passing through an end part in the front body direction of the rear leg elastic member is positioned in a back body direction from an imaginary line passing through an end part in the back body direction of the front leg elastic member. Sanitary napkin. The pants-type sanitary napkin according to any one of claims 1 to 3, wherein a distance between the longitudinal center line and an imaginary line passing through the front body direction end of the rear leg elastic member is 70 mm or more. The underpants type physiology according to any one of claims 1 to 4, wherein an end part in the back body direction of the front leg elastic member and an end part in the front body direction of the back leg elastic member are arranged in a region where the absorber is present. For napkins. The pants-type sanitary napkin according to any one of claims 1 to 5, wherein an elastic member extending in the longitudinal direction is disposed outside the absorbent body.

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