JP4776516B2 - Absorbent articles - Google Patents

Absorbent articles Download PDF

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JP4776516B2
JP4776516B2 JP2006333613A JP2006333613A JP4776516B2 JP 4776516 B2 JP4776516 B2 JP 4776516B2 JP 2006333613 A JP2006333613 A JP 2006333613A JP 2006333613 A JP2006333613 A JP 2006333613A JP 4776516 B2 JP4776516 B2 JP 4776516B2
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leak
base
absorbent article
proof
facing
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JP2008142340A (en
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哲哉 草川
正洋 谷口
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花王株式会社
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Description

  The present invention relates to an absorbent article used for absorbing body fluids, such as sanitary napkins and incontinence pads.

  Absorbent articles such as sanitary napkins are generally provided with leak-proof walls called three-dimensional gathers extending in the longitudinal direction of the napkin on the left and right sides of the skin facing surface. The three-dimensional gathering has a function of keeping a close contact state with the body following the movement of the wearer's body while the napkin is worn, thereby preventing so-called side leakage. However, due to the good followability, the three-dimensional gather is likely to be displaced inward at the excretory part-facing site, and the three-dimensional gather may be contaminated with liquid. In addition, when the displacement is severe, the absorption of the liquid may be hindered.

  The leak-proof wall constituting the three-dimensional gather is generally in a form of standing upward from the skin facing surface of the absorbent article, but from the outer side to the inner side in the width direction of the absorbent article. The thing of the form inclined toward is also known (refer patent documents 1 thru | or 3). However, these patent documents do not describe how to realize and maintain the inclined shape of the three-dimensional gather. Therefore, when the absorbent articles described in these patent documents are attached, it is considered that the three-dimensional gathers fall down due to the body pressure of the wearer, and the inclined form is not maintained.

JP 2002-238949 A JP 2003-24384 A JP 2004-358109 A

  The objective of this invention is providing the absorbent article which can maintain the inclination shape of a three-dimensional gather stably also from the conventional absorbent article which has a three-dimensional gather.

The present invention has leak-proof walls located on both sides on the skin facing surface side and extending in the longitudinal direction,
Each leak-proof wall is an absorbent article comprising a base wall part and a projecting part projecting substantially horizontally from the upper part of the base wall part,
A part of the overhang part and a part of the base wall part are joined, or a part of the base wall part and another part of the base wall part are joined, and each overhang part is absorbent. An absorbent article that is inclined downward from the outer side to the inner side in the width direction of the article is provided.

  According to the absorbent article of the present invention, the overhanging part constituting a part of the leak-proof wall makes it difficult for the leak-proof wall to be displaced to the inside in the width direction of the absorbent article, and also conforms to the wearer's body shape. The liquid leakage preventing property and the liquid absorbing property are improved.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The perspective view of the sanitary napkin as 1st Embodiment of the absorbent article of this invention is shown by FIG. FIG. 2 shows a sectional view taken along line IIa-IIa and a sectional view taken along line IIb-IIb in FIG.

  As shown in FIG. 1, the sanitary napkin 1 of the present embodiment has a vertically long shape. In FIG. 1, the near side of the napkin 1 is located on the front side of the wearer in the wearing state. On the other hand, in the figure, the back side of the napkin 1 is located on the back side of the wearer in the wearing state. As shown in FIGS. 2 (a) and 2 (b), the napkin 1 includes a top sheet 2 located on the side close to the wearer's skin, a back sheet 3 located on the side far from the wearer's skin, and the top sheet 2. And a liquid retaining absorber 4 interposed between the back sheet 3 and the back sheet 3. The top sheet 2 is liquid permeable. The back sheet 3 is liquid-impermeable or water-repellent. A pair of leak-proof walls 5 and 5 are arranged along the longitudinal direction on the left and right side portions on the top sheet side which is the skin facing surface side of the napkin 1. The leak-proof wall 5 stands from the vicinity of the left and right side edges of the absorber 4.

  The napkin 1 has the excretion part opposing site | part A which is a site | part which opposes a wearer's excretion part at the time of the wear. The excretory part facing part A is in a position slightly biased to the front side (the front side in FIG. 1) slightly from the central part in the longitudinal direction of the napkin 1.

  The top sheet 2 covers the entire area of the upper surface of the absorbent body 4 and extends from the side edge of the absorbent body 4 and is wound on the back sheet side. The top sheet 2 can be made of the same material as a conventionally known one, and for example, a hydrophilic nonwoven fabric or an apertured film is used. The back sheet 3 is disposed on the entire lower surface side of the absorber 4. The back sheet 3 is composed of, for example, a liquid impermeable film sheet (preferably a water vapor permeable and liquid impermeable film sheet). The absorbent body 4 is configured by, for example, a mixture of fluff pulp and superabsorbent polymer particles wrapped in tissue paper.

  The back sheet 3 extends outward in the width direction from the side edge of the absorber 4, and forms a pair of wings 6 at the position of the excretory part-facing portion A of the napkin 1. Although not shown, an adhesive layer for fixing the napkin 1 to the clothing is formed on the clothing facing surfaces of the back sheet 3 and the wing 6. The pressure-sensitive adhesive layer is protected by a release paper (not shown).

  The top sheet 2 and the back sheet 3 respectively extend from the front and rear ends of the absorber 4, and the extended top sheet 2 and the back sheet 3 are bonded and fixed to each other to form an end seal portion 7.

  The leak-proof walls 5 disposed on the left and right sides of the napkin 1 are formed by processing a single belt-like sheet into a sleeve shape and a T-shape. The leak-proof wall 5 includes a base wall portion 5a. The base wall 5a has a fixed end and a free upper end. The fixed end of the base wall portion 5a exists at an outer position at a predetermined distance from the side edge of the absorber 4.

  The leak-proof wall 5 further includes an overhang portion 5b. The projecting portion 5b is a planar portion projecting in an approximately horizontal direction from the upper portion of the base wall portion 5a, specifically, from the upper end. In the wearing state of the napkin 1, the upper surface of the overhanging portion 5b comes into contact with the skin of the wearer. The overhanging portion 5b is composed of an inward overhanging portion 51b and an outward overhanging portion 52b that protrude inward and outward in the width direction of the napkin 1 with the same amount of overhang. The overhang of the overhang portion 5 b extends over the entire length direction of the napkin 1.

  A plurality of elastic members 5c extending in the longitudinal direction of the leak-proof wall 5 are disposed on the overhang 5b. The constituent material of the elastic member 5c is not particularly limited as long as it is normally used for absorbent articles. For example, polyolefins (such as butadiene), polyurethanes, and natural rubber are preferably used. The shape of the elastic member 5c can be a thread shape, a string shape, a belt shape, a film shape, or the like. In this embodiment, a thread-like elastic member is used. The elastic member 5 c is disposed over the entire length of the leak-proof wall 5. However, it is sufficient that the elastic member 5c is disposed at least at the excretory part-facing portion A of the napkin 1. The elastic member 5c is fixed in an expanded state in the sheet forming the leak-proof wall 5. As this fixing means, a heat seal or a hot melt adhesive is used. The expansion ratio of each elastic member 5c is substantially the same.

  As shown in FIG. 2 (a), in the excretory part facing part A of the napkin 1, the overhanging part 5 b of each leak-proof wall 5 moves downward from the outer side to the inner side in the width direction of the napkin 1. Inclined. The overhang part 5b is inclined by joining a part of the overhang part 5b and a part of the base wall part 5a. Specifically, when the leak-proof wall 5 is viewed from the width direction, the lower surface of the inward projecting portion 51b, which is a member positioned at the highest position on the inner side, is a base member that is positioned immediately below the base. The overhanging portion 5b is inclined by being fixed to the inner wall of the wall portion 5a. For this fixing, for example, bonding with an adhesive or heat fusion is used.

  In the natural state of the napkin 1, the leak-proof wall 5 stands up reliably because the elastic member 5c contracts. And in the excretion part opposing part A, since the overhang | projection part 5 inclines below toward the inner side from the outer side in the width direction of the napkin 1, when the napkin 1 is seen from the width direction, The overhang portions 5b and 5b are shaped so that a line that virtually connects them forms a smooth concave curve. As a result, the overhanging portion 5b comes to follow the wearer's body shape, and the leak-proof wall 5 in the excretory portion-facing portion A, which is a portion where position displacement easily occurs, is less likely to be displaced further inward. In this way, the simple process of simply fixing the inwardly projecting portion 51b and the base wall portion 5a effectively prevents the leakage preventing wall 5 from being contaminated with excretion fluid such as menstrual blood in the excretion portion-facing portion A. The Of course, liquid leakage (lateral leakage) is also prevented.

  On the other hand, as shown in FIG. 2 (b), in the part before and after the excretory part facing part A, the inward projecting part 51b and the base wall part 5a are fixed in the part before and after the excretion part facing part A. Absent. Therefore, the overhanging portion 5 b is a flat surface substantially parallel to the skin contact surface of the napkin 1. As a result, the leak-proof wall 5 has a substantially T-shape in the front and rear portions of the excretory part-facing portion A. Thereby, the surface sealing effect that the upper surface of the overhanging portion 5b is elastically and in close contact with the wearer's thigh is exhibited. As a result, due to the high followability inherent in the leak-proof wall 5, it is difficult for the wearer to be displaced due to movement, and liquid leakage is effectively prevented.

  When the inwardly projecting portion 51b and the base wall portion 5b are joined together with the elastic member 5c, which is one of the members constituting the projecting portion 5b, extended, the projecting portion 5b becomes a napkin in a plan view of the napkin 1. 1 bends outward in the width direction. Since the joining of the inwardly projecting portion 51b and the base wall portion 5b is performed in the excretory portion facing portion A as described above, the projecting portion 5b is curved in a convex shape in the excretory portion facing portion A. By the protruding portion 5b having such a convex curved shape, the liquid receiving area on the skin facing surface side of the napkin 1 is widened. As a result, the liquid absorbability is further improved. Such a convex curved shape is also realized in the second to fourth embodiments described later.

  As is clear from the comparison between FIG. 2A and FIG. 2B, the base wall portion 5a of the leak-proof wall 5 has a height at the excretory portion facing portion of the wearer (see FIG. 2A). In comparison, the height (see FIG. 2B) at the rear portion of the excretory part-facing region is higher. With such a configuration, there is an advantage that the liquid leakage preventing property from the rear side is better than the excretory part facing part.

  The leakproof wall 5 has an inwardly projecting portion 51b of the projecting portion 5b fixed to the top sheet 2 at the positions of the front end portion and the rear end portion in the longitudinal direction. The overhanging portion 5b is not fixed to the top sheet 2 between the front and rear fixed positions. Thereby, the leak-proof wall 5 becomes easier to stand between the front and rear fixed positions. Moreover, the back seat | sheet side of the napkin 1 curves convexly toward the top sheet | seat side, and the whole napkin becomes a shape along a wearer's body shape. As a result, the upper surface of the overhang portion 5b is more stably brought into close contact with the wearer's thigh, and the surface sealing effect is further exhibited. In particular, when the wing 6 is provided outside the standing position of the leak-proof wall 5 as in this embodiment, the leak-proof wall 5 is caused by the folding of the wing 6 when the napkin 1 is attached. A force that stabilizes the base end position outwardly acts, and the liquid receiving area on the skin facing surface side of the napkin 1 is also widened.

  The shape in which the protruding portion 5b is inclined from the outside in the width direction of the napkin 1 to the inside is realized by fixing the lower surface of the inward protruding portion 51b to the inner wall of the base wall portion 5a as described above. Yes. In this case, when the base wall portion 5a is fixed to the inner wall under the non-expanded state of the elastic member 5c, the degree of inclination of the overhanging portion 5b becomes relatively low. On the contrary, when the base wall 5a is fixed to the inner wall in a state where the elastic member 5c is largely stretched, the degree of inclination of the overhanging portion 5b becomes relatively large. Moreover, since the overhang | projection part 5b inclines gradually from the fixing position of the base wall part 5a and the inward overhang | projection part 51b, an inclination state changes according to the length (length of the longitudinal direction of the napkin 1) to fix. . Considering the contact between the overhang portion 5b and the wearer's body, the maximum inclination angle of the overhang portion 5b is preferably 30 to 50 degrees. Further, in order to stabilize the inclination of the overhanging portion 5b (the maximum inclination angle under that condition), the base wall portion 5a and the inward overhanging portion 51b are fixed at least 5 cm along the longitudinal direction of the napkin 1. It is preferable.

  Due to the fact that the force that stabilizes the base end position of the leak-proof wall 5 to the outside works, and because the longitudinal front and rear end portions of the inwardly projecting portion 51b are fixed to the top sheet 2. The overhanging portion 5b of the leak-proof wall 5 is less affected by the movement of the wearer's thigh, and the surface shape is stably expressed. Furthermore, the liquid receiving area on the skin facing surface side is further widened. In general, in a napkin having a T-shaped leak-proof wall as in this embodiment, as the length of the napkin increases, the overhang of the leak-proof wall is affected by the movement of the wearer's thigh. Although it tends to be easy, according to the present embodiment, it is difficult to receive such an influence.

  On the top sheet side of the napkin 1, leakage preventing grooves 8, 8 extending in the longitudinal direction of the napkin 1 are formed on both sides thereof. Each leak-proof groove 8 is formed by consolidating and integrating the top sheet 2 and the absorber 4 by pressing means such as embossing from the top sheet side. Each leakage prevention groove 8 is located on the inner side in the width direction of the napkin 1 than each leakage prevention wall 5 described above. Each leak-proof groove 8 has a substantially symmetric shape with respect to the vertical center line of the napkin 1. The leakage prevention grooves 8 are connected to each other at their front and rear ends, thereby forming a closed ring shape as a whole. A second leak-proof groove 9 having a convex curve is formed at a position closer to the rear than the excretory part-facing region A. The second leak-proof groove 9 has a convex shape toward the rear end of the napkin 1. The second leak-proof groove 9 is formed in the ring-shaped leak-proof groove 8, and each end of the second leak-proof groove 9 is connected to the leak-proof groove 8. .

  As shown in FIG. 2A, in the excretory part facing part A of the napkin 1, the thickness of the absorbent body 4 between the leak-proof grooves 8 and 8 and the outside of the leak-proof groove 8 when viewed in the width direction. There is a difference. As is apparent from FIG. 2A, the thickness is larger between the leakage prevention grooves 8, that is, the region surrounded by the closed leakage prevention groove 8 than the outside of the leakage prevention groove 8. In the present embodiment, the constituent material of the absorber 4 is the same between the leak-proof grooves 8 and the outside of the leak-proof groove 8, and therefore the difference in the thickness of the absorber 4 is the difference in the basis weight of the absorber 4. It corresponds to. That is, in the napkin 1, there is a difference in basis weight between the absorbent body 4 positioned between the leak-proof grooves 8 and the absorbent body 4 positioned outside the leak-proof grooves 8, and the absorption positioned between the leak-proof grooves 8. The body 4 has a higher basis weight than the absorbent body 4 located outside the leak-proof groove 8. As a result, in the napkin 1, the area surrounded by the leak-proof groove 8 has a shape that rises more than the peripheral area located outside the leak-proof groove 8.

  The part located in the excretion part opposing part A among the leak-proof grooves 8 is curved in a convex shape toward the inner side in the width direction of the napkin 1. As a result, the distance between the left and right leak-proof grooves 8 is the narrowest in the excretory part facing part A. Since the leak-proof groove 8 has such a shape, when a compressive force from the lateral direction is applied to the napkin 1 due to the movement of the wearer in the mounted state of the napkin 1, the left and right protruding portions 5b, 5b becomes easier to incline downward toward the inside. That is, a virtual concave curve formed by connecting the left and right projecting portions 5b, 5b has a smoother shape. As a result, the overhanging portion 5b comes to further conform to the wearer's body shape, and liquid leakage is further prevented.

  In particular, in the napkin 1 according to the present embodiment, when a compressive force from the lateral direction is applied to the napkin 1 due to the movement of the wearer when the napkin 1 is attached, the excretory part of the napkin 1 as shown in FIG. Since the facing part A is easily foldable with the leak-proof groove 8 as a starting point of bending, the absorption surface, that is, the surface on the top sheet side is stably raised. As a result, a virtual smooth concave curve connecting the inclined left and right protruding portions 5b, 5b and the raised absorption surface is formed. As a result, the fitting property of the napkin 1 is enhanced, thereby further improving the leakage prevention effect. In particular, since the raised portion of the absorbent body 4 is surrounded by the leak-proof groove 8 having a closed shape, the stability of the surface shape of the portion is further enhanced.

In order to raise the absorption surface more stably, it is effective to increase the basis weight of the absorbent body 4 located between the leakage preventing grooves 8. As described above, the absorbent body 4 positioned between the leak-proof grooves 8 has a high basis weight. However, when the basis weight is 300 to 1000 / m 2 , particularly 400 to 600 g / m 2 , It is possible to swell the absorbing surface even more stably. The basis weight in this range is also advantageous from the viewpoint that the napkin 1 is easily pushed up to the body side with the leak-proof groove 8 as a starting point of bending by the pressure applied from the side of the napkin 1.

  When the shape of the leak-proof groove 8 in plan view is convexly convex outward in the width direction of the napkin 1 and the distance between the grooves is the widest at the excretory part-facing portion, 8 convex curved shape, in other words, the central region in the width direction of the napkin 1 is stabilized by the arch structure, and the absorber 4 is less likely to be generated. As a result, the shape of the napkin 1 is stabilized. Stabilization of the shape of the napkin 1 contributes to stabilization of the shape of the leak-proof wall 5. Therefore, it becomes easy to stably obtain the effect of providing the leak-proof wall 5.

The basis weight of the absorbent body 4 positioned between the leak-proof grooves 8 is as described above, while the basis weight of the absorbent body 4 positioned outside the leak-proof groove 8 is 100 to 400 g / m 2 , particularly 150 to 300 g / m 2 is preferable from the viewpoint of raising the absorption surface more stably and from the viewpoint that the napkin 1 is easily pushed up to the body side with the leakage preventing groove 8 as a starting point of bending.

  From the same viewpoint, in the absorber 4, the region having the high basis weight is the shape of the leak-proof groove 8 in which the outline of the region forms a closed shape when the absorber 4 is viewed in plan. It is preferable to match. In order to configure the absorber 4 in this way, for example, the absorber 4 has a two-layer configuration of a lower layer absorber and an upper layer absorber laminated thereon, and follows the outline of the upper layer absorber in plan view. Thus, the leakage prevention groove 8 may be formed.

  Next, second to fourth embodiments of the present invention will be described with reference to FIGS. Regarding the points that are not particularly described with respect to these embodiments, the description of the first embodiment described above is appropriately applied. 4 to 6, the same members as those in FIGS. 1 to 3 are denoted by the same reference numerals.

  FIG. 4: shows the cross-sectional view of the width direction of the excretion part opposing site | part in the napkin of 2nd Embodiment. In the napkin 1 of this embodiment, the side edge part of the sheet | seat which comprises the leak-proof wall 5 extends toward the width direction outer side of the napkin from the fixed end of the base wall part 5a, and the extension part of the back seat | sheet 3 It is located even on the wing 6 comprised from this. On the other hand, in 1st Embodiment, as shown to Fig.2 (a), the edge part of the sheet | seat which comprises the leak-proof wall 5 is wound under the absorber 4. As shown in FIG. About the point other than this, the napkin 1 of this embodiment has the same structure as the napkin of 1st Embodiment.

  Fig.5 (a) shows the cross section of the width direction of the excretion part opposing site | part in the napkin of 3rd Embodiment. FIG.5 (b) shows the cross section in the width direction in the position before and behind the excretion part opposing site | part in the napkin of 3rd Embodiment. The leak-proof wall 5 includes a base wall portion 5a and a protruding portion 5b that protrudes substantially horizontally from the upper end thereof. The overhang portion 5 b is an inward overhang portion that projects inward in the width direction of the napkin 1.

  As shown in FIG. 5 (a), in the excretory part facing part of the napkin 1, the overhanging part 5 b of each leak-proof wall 5 is inclined downward from the outer side in the width direction of the napkin 1 toward the inner side. ing. Specifically, when the leak-proof wall 5 is viewed from the width direction, the bottom surface of the overhanging portion 5b which is a member located at the highest position on the inner side is a base wall portion which is a member located immediately below By fixing to the inner wall of 5a, the overhang | projection part 5b inclines. On the other hand, as shown in FIG. 5 (b), the overhanging portion 5 b and the base wall portion 5 a are not fixed at the front and rear portions of the excretory portion-facing portion, and the overhanging portion 5 b is connected to the skin contact surface of the napkin 1. It is a substantially parallel flat surface. As a result, the leak-proof wall 5 has a substantially inverted L-shape at portions before and after the excretory portion-facing portion. Also in this embodiment, the same effect as the first embodiment is exhibited.

  Fig.6 (a) shows the cross section of the width direction of the excretion part opposing site | part in the napkin of 4th Embodiment. FIG.6 (b) shows the cross-sectional view of the width direction in the position before and behind the excretion part opposing site | part in the napkin of 4th Embodiment. The leak-proof wall 5 includes a base wall portion 5a and a protruding portion 5b that protrudes substantially horizontally from the upper end thereof. The overhanging portion 5 b includes an outward overhanging portion that protrudes outward in the width direction of the napkin 1. Further, the base wall 5a has a substantially square shape in which the substantially central portion in the height direction is bent outward in the width direction of the napkin 1 at the front and rear positions of the excretory portion-facing portion. An elastic member 5d is disposed at the bent portion of the base wall 5a having a square shape. The base wall portion 5a is divided into a lower wall portion 51a located below and an upper wall portion 52a located above the boundary with the position where the elastic member 5d is disposed.

  As shown in FIG. 6 (a), in the excretory part facing part of the napkin 1, the overhanging part 5 b of each leak-proof wall 5 is inclined downward from the outer side to the inner side in the width direction of the napkin 1. is doing. Specifically, when the leakage preventing wall 5 is viewed from the width direction, the inner wall of the upper wall portion 52a that is a member positioned at the highest position on the inner side is a lower wall that is a member positioned immediately below the inner wall. The overhanging portion 5b is inclined by being fixed to the inner wall of the portion 51a. On the other hand, as shown in FIG. 5 (b), the lower wall 51 a and the upper wall 52 a are not fixed at the front and rear portions of the excretory portion-facing portion, and the overhang portion 5 b is the skin contact surface of the napkin 1. It is a flat surface almost parallel to. Also in this embodiment, the same effect as the first embodiment is exhibited.

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, although the said embodiment is an example which applied this invention to the sanitary napkin, this invention is applicable similarly to absorbent articles other than a sanitary napkin, for example, an incontinence pad and a disposable diaper.

  In the first and second embodiments, the inwardly projecting portion 51b and the outwardly projecting portion 52 have the same amount of projecting in the horizontal direction, but instead of this, the inwardly projecting portion 51b The amount of overhang may be different between the outward overhang portion 52.

  In addition, in the fourth embodiment shown in FIG. 6A, the inner end of the upper wall portion 52a and the inner end of the lower wall portion 51a are fixed. The fixing may be performed in an intermediate region between the inner end and the outer end of the portions 51a and 52a. When such fixing is performed, the degree of inclination of the overhanging portion 5b is reduced, but there is an advantage that the standing property of the leak-proof wall 5 is improved. Therefore, in an absorbent article (for example, an incontinence pad) that needs to cope with a situation in which liquid is discharged to the absorption surface at a high speed such as urine, if such a configuration is adopted, the liquid scattering prevention effect and the time of liquid absorption This is preferable because the effect of preventing the liquid flow is enhanced.

  In each of the embodiments described above, the overhanging portion 5b overhangs from the upper end of the base wall portion 5a. Instead of this, it is a part of the upper portion of the base wall portion 5a and slightly lower than the upper end. The overhanging portion 5b may be overhanging.

  In the above-described embodiment, the front and rear ends of each leakage prevention groove 8 are connected to each other. Alternatively, either the front end or the rear end may not be connected, or Both front and rear ends may not be connected.

FIG. 1 is a perspective view showing a sanitary napkin as a first embodiment of the present invention. 2A is a sectional view taken along line IIa-IIa in FIG. 1, and FIG. 2B is a sectional view taken along line IIb-IIb in FIG. FIG. 3 is a cross-sectional view in the width direction of the excretory part-facing portion with the napkin shown in FIG. 1 attached. FIG. 4 is a cross-sectional view in the width direction (a diagram corresponding to FIG. 2 (a)) in the excretory part-facing portion of the sanitary napkin as the second embodiment of the present invention. FIG. 5A is a cross-sectional view in the width direction (corresponding to FIG. 2A) of the excretory part facing portion in the sanitary napkin as the third embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view in the width direction before and after (FIG. 2B). FIG. 6 (a) is a cross-sectional view in the width direction of the excretory part facing part in the sanitary napkin as the third embodiment of the present invention (FIG. 2 (a) equivalent view), and FIG. 6 (b) is the excretion part opposing part. FIG. 3 is a cross-sectional view in the width direction before and after (FIG. 2B).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Top sheet 3 Back sheet 4 Absorber 5 Leak-proof wall 5a Base wall part 51a Lower wall part 52a Upper wall part 5b Overhang part 51a Inward overhang part 52a Inward overhang part 8 Leak prevention groove A Excretion part opposite Part

Claims (6)

  1. Having leak-proof walls located on both sides of the skin facing surface side and extending in the longitudinal direction,
    Each leak-proof wall is an absorbent article comprising a base wall part and a projecting part projecting substantially horizontally from the upper part of the base wall part,
    The lower surface of the projecting part projecting inward in the width direction and the inner wall of the base wall part are joined at the excretory part facing part of the wearer, and each projecting part is outward in the width direction of the absorbent article. It is inclined downward from the side toward the inward side ,
    The overhang portion and the base wall portion are not fixed in the front and back portions of the excretion portion facing portion, and the overhang portion is a flat surface substantially parallel to the skin contact surface of the absorbent article,
    The overhanging portion is provided with an elastic member extending in the longitudinal direction of the leak-proof wall, and the overhanging portion and the base wall portion are joined under a state where the elastic member is extended,
    In the planar view of an absorbent article, the said overhang | projection part is curving convexly toward the width direction outer side of an absorbent article in a wearer's excretion part opposing part .
  2. Having leak-proof walls located on both sides of the skin facing surface side and extending in the longitudinal direction,
    Each leak-proof wall is an absorbent article comprising a base wall part and a projecting part projecting substantially horizontally from the upper part of the base wall part,
    The inner wall of the upper wall part and the inner wall of the lower wall part of the base wall part are joined at the excretory part facing part of the wearer, and each overhang part is formed from the outer side in the width direction of the absorbent article. It is inclined downward toward the side,
    The upper wall portion and the lower wall portion are not fixed in front and rear portions of the excretory portion facing portion, and the overhang portion is a flat surface substantially parallel to the skin contact surface of the absorbent article. ,
    The overhanging portion is provided with an elastic member extending in the longitudinal direction of the leak-proof wall, and the upper wall portion and the lower wall portion are joined under a state where the elastic member is extended,
    The said base wall part is an absorbent article in which the substantially center part of the height direction is bent toward the width direction outward of the absorbent article in the front and back positions of the excretory part facing part .
  3. The both sides of the skin facing surface side are located on the inner side in the width direction than the leakage preventing wall and have leakage preventing grooves extending in the longitudinal direction, and each leakage preventing groove has a width direction at the excretory part facing portion. The absorbent article according to claim 1 or 2 , wherein the absorbent article is curved inward.
  4. The overhanging portion is composed of an inward overhanging portion and an outward overhanging portion that protrude from the upper portion of the base wall portion toward the inside and the outside in the width direction of the absorbent article, respectively.
    In the position before and after the excretion portion facing portion, the absorbent article according to claim 1, wherein said leakage preventing wall has a substantially T-shaped.
  5. The overhanging portion comprises an inward overhanging portion that protrudes from the upper portion of the base wall portion toward the inner side in the width direction of the absorbent article,
    In the position before and after the excretion portion facing portion, the absorbent article according to claim 1, wherein said leakage preventing wall has no substantially inverted L-shape.
  6. The height at the position of the rear part of this excretory part opposing site | part is higher than the height in the wearer's excretory part opposing site | part of the said base wall part in any one of Claim 1 thru | or 5. Absorbent articles.
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