JP2010115403A - Individual package of absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an individual package of an absorbent article excellent in fitting property to a body and leak preventing property by having absorbing projecting parts, and thinner when the absorbent article is folded for individual packaging. <P>SOLUTION: In the individual package 10 of the absorbent article, the absorbent article 1 having a front face sheet, a rear face sheet, and an absorber interposed between both the sheets is folded together with a packaging material. The absorber has a front absorbing projecting part and a rear absorbing projecting part raised to the skin side of a wearer, both the projecting parts are arranged spaced apart in the front abdominal side and the rear back side of the wearer via a dividing area, the absorbent article 1 is folded in a folding position present in the dividing area. All or a part of the rear absorbing projecting part is housed in the dividing area in the folded state, in the individual package 10 of the absorbent article. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an individual package of absorbent articles in which absorbent articles such as sanitary napkins are individually packaged.

An absorbent article such as a sanitary napkin has a structure in which an absorbent body is interposed between a top sheet and a back sheet as a general configuration. In recent years, in order to improve the adherence of this absorbent article to the body, leakage prevention, etc., the absorbent body is made bulky from the lower abdomen side to the buttocks at the center in the width direction of the article, and the part is placed on the skin surface side of the wearer What has been raised is developed. For example, Patent Literature 1 discloses an absorbent article having an absorbent middle portion divided into two parts, a front abdominal side and a rear back side. In this absorbent article, the absorbent body protrudes toward the skin side to improve the fit and suppress the leakage of excreted liquid and the like. This deformation is unlikely to affect the other mid-high.
JP 2006-239162 A

By the way, the absorbent article before use is usually an individual package that is folded and folded in, for example, a tri-fold together with a packaging sheet in consideration of hygienic storage and portability. In carrying out this individual packaging, for example, if the absorbent article having the middle part of the absorbent body is folded in three, the parts projecting at the center of the absorbent body overlap each other. Then, the overlapped part is partially thickened, resulting in a bulky individual package with a swollen center. For this reason, inconvenience occurs when carrying when going out, the abutting state collapses when carrying and becomes an absorbent article with distortion, the absorption and wearing feeling deteriorates, or when making a package at the time of sales distribution It becomes difficult to make secondary packaging to collect individual packages.
In view of the above points, the present invention improves the adhesion to the body and the leak-proof property by forming a protruding portion that forms a middle-high portion on the absorbent body, and is partially wrapped when the absorbent article is folded by individual packaging. It aims at providing the individual package of the absorbent article which suppressed that it became too thick.

  The above object is an individual packaging body of an absorbent article in which an absorbent article including a top sheet, a back sheet, and an absorbent body interposed between the two sheets is folded together with a packaging material, the absorbent body Has a front absorption convex part and a rear absorption convex part that protrude on the skin side of the wearer, and the both convex parts are separated from the wearer's front ventral side and rear back side through a separation region. The absorbent article is folded toward the protruding direction of the two convex portions at the folding position in the separation region, and at least a part of the rear absorbent convex portion is folded in the folded state. This was achieved by a single package of absorbent articles contained within the separation zone.

  The individual wrapping body of the present invention has a high fit because the absorbent article has a middle and high part of the absorbent body, effectively absorbs excretory fluid, etc., and once absorbed, the liquid is difficult to leak, and a comfortable wearing feeling Can be realized. In addition, it is possible to prevent the film from becoming too thick when folded and individually wrapped, and is excellent in storability and portability.

Hereinafter, based on the individual package of the sanitary napkin which is the preferable embodiment and the sanitary napkin which opened this, the individual package of this invention is demonstrated in detail, referring drawings.
FIG. 1 is a partially broken perspective view schematically showing an individual package (embodiment 1) of a sanitary napkin which is a preferred embodiment of the present invention. 2 is a partially broken perspective view schematically showing an absorbent article (a sanitary napkin) when the individual package shown in FIG. 1 is unpacked and stretched (however, the packaging sheet and tab are not shown). ).
The sanitary napkin of Embodiment 1 has an absorbent body 3 between a liquid-impermeable back sheet 2 and a liquid-permeable surface sheet 4. When the top sheet 4 is worn in contact with the skin of the wearer and menstrual blood or the like is excreted, the absorbent body 3 absorbs and holds the excreted liquid that has passed through the top sheet 4. And in this embodiment, the circumferential emboss 5 and the side emboss 6 are formed so that the surface sheet 4 and the absorber 3 may be integrated. Thereby, the surface sheet 4 and the absorber 3 are fixed so as not to be displaced, and the liquid or the like that has shifted to the side or in the front-rear direction is dammed to prevent liquid leakage. The method for forming the circumferential embossing and the side embossing is not particularly limited, and the circumferential embossing and the side embossing can be usually formed by a method used for this type of article.

  Further, the sanitary napkin 1 according to the first embodiment is sealed by joining the back sheet 2 and the top sheet 4 at the peripheral seal portion 9. In the first embodiment, a method for forming the peripheral seal portion includes, for example, heat sealing. And the sanitary napkin 1 of this Embodiment 1 has the wing part 7 extended to the outward in the both-sides edge of the width direction of goods at the slightly forward belly side of the center of the goods longitudinal direction. The wing portion 7 can be folded to the opposite side of the wearer's skin when in use, and the back surface thereof is adhered to the crotch portion of the underwear to prevent movement and to prevent the underwear from being damaged due to side leakage. Although not shown, the provision of a three-dimensional gather arranged on the top sheet side that stands up so as to come into contact with the skin when worn and a side sheet for forming the same also prevent side leakage more effectively. Is preferable. The absorbent article 1 is provided with an anti-slip adhesive material (not shown) on the underwear side of the back sheet 2 and is fixed and mounted at the position where it comes into contact as described above.

  The absorbent body 3 according to the first embodiment is disposed on almost the entire surface of the article in plan view so as to leave the peripheral flap portion of the absorbent article. The absorber 3 includes a lower layer absorber 3c extending over the entire circumference of the circumferential emboss 5 and upper layer absorbers (3a, 3b) provided on the lower layer absorber. Here, the lower layer absorbent body 3c is long and widely disposed throughout the article, and extends from the vicinity of the article front end 1a to the vicinity of the rear end 1b. On the other hand, this upper layer absorber has the front absorption convex part 3a which protruded to the skin side ahead of the wearer's stomach side, and the back absorption convex part 3b which protruded to the skin side back side. In the present embodiment, the upper-layer absorber and the lower-layer absorber are joined, and the joining method is not particularly limited, but it is preferable to join by a hot-melt adhesive or dot-like unevenness (embossing) treatment.

  In the present embodiment, the forward convex portion 3a has an excretion point A that faces the wearer's vaginal opening, and is in contact with the wearer's skin so that this portion is firmly attached. Therefore, when there is excretion fluid (menstrual blood or the like), the excretion fluid is transferred directly to the front absorption convex portion 3a through the top sheet 4 and absorbed. In addition, since the front absorption convex portion 3a is raised, the amount of liquid that can be absorbed in this portion is larger than that of the absorber without such a raised portion. As a result, it is possible to absorb and hold unintentional spread such as menstrual blood. Moreover, since the front absorption convex part 3a which absorbed menstrual blood etc. is integrated with the lower layer absorber 3c, the menstrual blood is immediately transferred to this lower layer, for example, there is a movement of the wearer who is pressed. In addition, once absorbed menstrual blood or the like can be prevented from flowing out.

  On the other hand, the back absorption convex part 3b of this embodiment is contact | abutted to the buttocks at the time of mounting | wearing, and fits especially corresponding to the part which becomes deep near the anus of a crack. The rear absorption convex portion 3b is a “barrier wall” that prevents the front absorption convex portion 3a from absorbing the liquid or the like that has been returned to the back (the buttock side) by being somewhat reversed and prevents rear leakage. Become. That is, even if there is a liquid that flows from the front, the front side surface (barrier surface) B (see FIGS. 3-1 and 4) of the rear absorption convex portion 3b captures this liquid and the outside of the article. It can be quickly drawn into the convex portion 3b or the lower layer absorber 3c without escape. From such a point of view, the barrier surface B of the rear absorption convex portion 3b is preferably an upright surface that may be inclined or rounded so as to be an upright surface with respect to the upper surface of the lower layer absorber 3c. Preferably, it is a flat surface or a rounded surface that faces the front of the article. For example, in a lying posture when the wearer is sleeping, or due to movement of the body, the adhesion between the skin surface of the wearer and the article surface at the excretion spot A is impaired or misaligned. In some cases, the amount of menstrual blood is so large that it cannot be absorbed completely on the front side of the absorber. Even in such a case, the rear convex portion 3b fitted to the rupture exhibits the effect of absorbing menstrual blood and preventing leakage.

The packaging state of the individual package according to this embodiment will be described with reference to FIGS. 1 and 2. The packaging sheet 11 is overlapped with the sanitary napkin 1 and folded on the outer surface of the sanitary napkin 1 on the back sheet 2 side. First sanitary napkin 1 is folded separation region r, the rear absorbing convex portion 3b near or at baseline k ₁ in contact with the rear absorbent convex portion 3b is bent together with wrapping sheet 11. Further folded together with the packaging sheet 11 at the folding line shown at baseline k ₂ of the front portion 1a closer contact, or to forward absorbing convex portion 3a near, are three-fold. And the edge of the packaging sheet 11 is sealed by the seal part 13, and the individual package 10 which encloses the sanitary napkin 1 folded in three is formed. In the folded packaging sheet 11, a tab 12 is affixed to the end of the individual packaging body 10 on the front side and sealed. When unpacking this, the tab 12 is pulled in the direction T, so that the adhesion of the packaging sheet 11 at the seal line 13 is released, and the first and second release papers joined to the packaging sheet 11 so as not to be peeled (see FIG. (Not shown) is peeled off together with the packaging sheet 11, and the sanitary napkin 1 inside can be taken out with the release paper peeled off.

3A is a cross-sectional view taken along line III-III in FIG. As shown in the figure, the sanitary napkin of this embodiment has a front absorption convex portion 3a and a rear absorption convex portion 3b disposed on a lower layer absorbent body 3c having a substantially uniform thickness over the entire surface. The both convex portions are provided in a separated state via the separation region r. 3-2 is a cross-sectional view schematically showing a state where the sanitary napkin of the present embodiment is individually packaged by the cross section shown in FIG. 3-1. However, the back sheet 2 and the top sheet 4 are omitted and schematically shown by the shape of the absorber.
In the present embodiment 1, although longitudinal length w _r of the separation region r is not particularly limited, it is preferable to determine in view of the relationship between the longitudinal length w _b of the rear absorbent convex portion 3b (Fig. 3 -1). For example, preferably the longitudinal length w _r of the isolation region is 60% or more longitudinal length w _b of the rear absorbent convex portion 3b, the longitudinal length w _b of the rear absorbent convex portion 3b It is more preferable that (w _r ≧ w _b ). Longitudinal length _{w r} of the specific isolation region in the case of sanitary napkins of the type as in this embodiment 1, preferably from 15 to 50 mm, 20 to 40 mm is more preferable. In this way, when the sanitary napkin 1 is first folded at the base line k ₁ in the first folding direction u ₁ (see FIG. 3-2), at least a part of the rear absorption convex portion 3b is separated into the separation region r. And the area that overlaps the front absorption convex portion is reduced. And this further folded in a direction u ₂ second bent at baseline k _2, the rear absorbing convex portion 3b is suppressed to become partially thick in order to have accommodated the spatially compact individual packaging body 10 (See FIG. 1).

In the sanitary napkin of Embodiment 1, the length w _a in the longitudinal direction of the front absorption convex portion 3a is not particularly limited, but the relationship with the length w _b in the longitudinal direction of the rear absorption convex portion 3b is w _a is greater than _{w b (w b <w a} ) is preferably. The length w _ca of the front absorption convex portion is preferably 60 to 120 mm, and preferably 70 to 110 mm as a sufficient length in consideration of the function of receiving liquid or the like at the excretion point A of the convex portion. More preferred. The length w _b in the longitudinal direction of the rear absorption convex portion 3b is preferably 20 to 75 mm, more preferably 25 to 50 mm in consideration of the barrier wall function described above. By doing in this way, the front absorption convex part 3a and the back absorption convex part 3b are easy to absorb the excreted menstrual blood etc., and also the fitting property with respect to the undulation of a wearer's body and a compact individual packaging are possible. And Further, the longitudinal length of the separation region is formed by 60% or more of the rear absorbing convex portion 3b, and the longitudinal length of the front absorbing convex portion 3a is longer than the longitudinal length of the rear absorbing convex portion 3b. in a preferred embodiment are, in the forward portion than the base line k ₂ of the sanitary napkin, it overlaps the front absorber convex portion 3a, since the non-overlapping ensuring individual package forms the rear absorbent convex portion 3b, a compact It is possible to provide an individual package with a more stable individual package shape.

Forward absorbing convex portion 3a in the sanitary napkin of this embodiment is raised in height h _a topsheet side maximum value (see Figure 3-1). On the other hand, the rear absorber convex portion 3b is raised with a height h _b on the surface sheet side by the maximum value. These relationships are not particularly limited, as one method of controlling the ridges, it is preferable rear absorbing convex portion the height h _{b <forward-absorbing} convex portion height h _a. By higher forward absorbing convex portion height h _a, also preferably can correspond to the liquid waste when frequently used is directly absorbed from the excretion point A at the front absorber convex portion 3a, whereas that in individual packaging The rear absorption convex portion 3b that is sometimes folded easily fits in the space of the separation region r.
As shown in FIG. 1, the front part and the rear part are folded and overlapped. However, considering portability, it is desired to make a thin individual package. In order to obtain a thin individual body, the absorption convex part can be made thin, but it is preferable to make the rear convex part thin in consideration of securing the absorbency of the front absorption convex part corresponding to the excretion part. .
As described above, the excretory fluid first absorbed by the front absorption convex portion 3a is transferred and held by the lower layer absorber 3c, and even if there is a liquid or the like that flows backward, the rear absorption convex portion 3b reliably Absorb and capture. Moreover, it is preferable that both convex parts fit along the undulation of the body. In a typical sanitary napkin from this point of view, the front absorber convex portion height _{h a} specifically preferred 2.5～10Mm, 3 to 8 mm is more preferable. Preferably 2~9mm for rear absorbing convex portion height _{h b, 2.5~7mm} is more preferable. Further, the difference between the front absorbent convex portion height _{h a} and the rear absorbent convex portion height _{h b} is preferably from 0.5 to 5 mm, 1 to 4 mm is more preferable. At this time, the thickness h _c of the lower layer absorber is preferably 1.5 to 6 mm, and more preferably 2 to 5 mm.

In the embodiment 1, the side portion s ₂ after the rear absorbing convex portion 3b is to overlap opposite the rear portion t ₂ of the front absorbent protruding portions 3a when folded. To reduce as much as possible also the thickness of the overlapped portion, as another method of controlling the ridges, in the present embodiment, the protrusion height of the rear portion t ₂ of said front absorber protruding portion 3a protrudes in the front portion t ₁ The height is lowered in comparison with the height (see FIG. 3-2). On the other hand, the height from the forward portion s ₁ to the rear portion s ₂ is to be lower inclined manner also the rear absorbing convex portion 3b. That is, according to this embodiment, the rear absorption convex portion 3b and the front absorption convex portion 3a overlap correspondingly so that the tapered portions abut each other when folded, so that even if there is an overlap, it is partially It is possible to suppress an increase in thickness, and when looking at the rear absorption convex portion 3b, the front portion thereof is not particularly lowered and a sufficient height can be secured, so that a good barrier surface is configured.

  As a method for controlling (lowering) the height of the ridge, the above-described method for controlling the maximum height and the method for controlling the inclination of the overlapping portion have been described, but this method may be used alone or in combination. With regard to, the rear absorption convex portion may be processed only, or the rear absorption convex portion may be enlarged with respect to the inclination angle or the inclination length.

In the sanitary napkin of the present embodiment, a depression 8 is formed in the separation region r. The depression 8 has an arc shape in plan view, in other words, has a crescent-shaped or parabolic shape, and is arranged with the overhanging portion facing the front of the article and the inside thereof facing the rear of the article. . And it arrange | positions so that the curved inner side of this circular arc-shaped hollow may contact | connect the front end of the back absorption convex part 3b. By doing so, the portion provided with the depression 8 has a bending rigidity different from that of the periphery thereof, so that it tends to be a starting point of bending, and the rear absorption convex portion 3b is not bent, so that the rear absorption convexity can be more accurately. position close to the front end of the Jo portion 3b is to be folded so that the base line k ₁ folded. In this way, by forming a recess so that a desired portion becomes a bent base line, for example, the rear absorption convex portion is dimensionally fit in a space generated by folding, that is, the bent base line k is in a position as designed. ₁ can be folded so that it is preferable. By baseline k ₁ bent aim exactly into the separation region r is formed, the sanitary napkin 1 is so not folded on absorbing convex portions 3a and 3b of the front and rear, the front absorber convex portion 3a and the rear absorbent It becomes difficult to give the influence of the crease | fold in the convex part 3b, ie, the collapse of a convex part, the remainder of the crease at the time of wear, etc. In the present invention, “absorbing convex part fits in (predetermined space)” means that the convex part does not overlap with other convex parts in the state where the absorbent article is folded or overlapped. The main part of the absorption convex part (preferably the majority thereof) enters the separation region separating the front and rear absorption convex parts, and the thickness of this part of the article is different between the convex parts. It is said that it is suppressed more than when it collides and overlaps.

The shape of the recess 8 is preferably an arc shape in plan view as described above. Due to the circular arc shape, it is easy to form a fold line k ₁ such that at least a part of the rear convex portion 3 b is accommodated in the separation region r described above as a base line along the shape of the recess 8. In addition, as described above, the depression 8 is formed along the front end of the rear absorption convex portion, so that the liquid lower layer absorber captured by the barrier surface B using the wall surface of the convex portion arranged there. It is preferable at the point which raises the drawing-in action to 3c. The depth of the recess 8 is preferably a depth at which sufficient flexibility of the lower layer absorbent body 3c is obtained. The depression 8 can be formed by, for example, a heat embossing method as follows. In other words, a heat embossing device is used that includes an embossing roll having a protruding portion having a shape corresponding to a depression on the peripheral surface and a receiving roll disposed to face the peripheral surface of the embossing roll. The absorber and the top sheet are inserted between both rolls so that the top sheet side is located on the embossing roll side. And a hollow is formed by heating and pressurizing these integrally. In addition to the heat embossing method, it can also be formed by an ultrasonic embossing method, a high frequency embossing method, or the like.

FIG. 4 is a cross-sectional view schematically showing an enlarged periphery of the depression shown in FIG. 3-1. Absorber 3c thickness h _c is disposed on the backsheet 2, further rearward absorbing convex portion 3b thereon formed, it is covered with the topsheet 4. 8 recesses, as described above is disposed in proximity to the rear absorber convex portion, in the width w _d, base line k ₁ bent is formed. 8 longitudinal width _{w d} of the depression is preferably 3 to 25 mm, 5 to 20 mm is more preferable. 20-50 mm is preferable and, as for length ld (refer FIG. 5) of the width direction of the hollow 8, 25-40 mm is more preferable.

  FIG. 5 schematically shows the shape of the depression in plan view in Embodiment 1 and the arrangement relationship between the lower layer absorber 3c, the front absorption convex portion 3a, and the rear absorption convex portion 3b. It is a top view. As described above, the recess 8 is curved in an arc shape, and has a protruding portion 8f and an inward portion 8r. The overhanging portion 8f is directed in the front 1a direction, while the curved inner portion 8r is adjacent to the rear absorbing convex portion 3b. The inside of the dent 8 has a surface shape that is waved by embossing, and the embossed convex portions 8a and the embossed concave portions 8b are regularly formed at substantially equal intervals. In addition, the vertex of the embossing convex part is made to become lower than the surface of the lower layer absorber 3c.

Here, the folding form of the sanitary napkin in the individual package of Embodiment 1 will be described in more detail. Sanitary napkin that is folded at baseline k ₁ folded in this embodiment, the rear absorbing convex portion 3b and the front absorbent convex portion 3a contacts facing fall isolation region (see Figure 3-2).
On the other hand, when there is no separation region and the absorption convex portion is formed integrally with the front and rear, the front and rear absorption convex portions overlap when folded, and the thickness due to the absorption convex portion in the individual package is, The sum of the front thickness h _a and the rear thickness h _{b of the} absorption convex portion is approximately h _a + h _b . Further, for example, in an individual packaging body of a sanitary napkin in which the absorption convex portion is formed in series from the front abdominal side to the back dorsal side, a bend line is inevitably arranged on the convex portion, so the absorption convex portion It will be deformed with a broken line, which may adversely affect the fit and absorbency.
In contrast, in the first embodiment, as is clear from FIG. 3-2, can be a thickness according absorber convex portion when folded and substantially h _a. And in Embodiment 1, since it folds in the place which is not on a convex-shaped part, there is little influence of a fold. As a result, the feeling of wearing when taking out from the individual package and mounting is good, and absorption leakage due to the collapse of the absorber is also suppressed. In particular, the front absorption convex part that directly requires more menstrual blood absorbency near the excretion spot and the rear absorption convex part that acts as a barrier or stopper that absorbs rear leakage are functionally differentiated. Are arranged. In addition, each of the front and rear convex parts is provided separately so that it fits into the indented part of the wearer's body, and the separation region in the middle of them is rather along the place where the wearer's body has less undulations As a whole, extremely high skin adhesion is obtained. That is, a desired absorbency is obtained by firmly attaching necessary portions, and the cushioning property of the convex portion softly fits the wearer's skin, thereby obtaining a good wearing feeling.

Next, as another preferred embodiment of the present invention (Embodiment 2), an individual package of a sanitary napkin having two absorption cuboids having a substantially rectangular parallelepiped shape without the upper surface inclination will be described. FIG. 6A is a cross-sectional view of the sanitary napkin according to the second embodiment, and FIG. 6B is a cross-sectional view schematically illustrating a state where the sanitary napkin illustrated in FIG. In FIG. 6B, the two absorption convex portions 3a and 3b do not overlap at all, and 3b is completely stored in the separation region r. Thus, even without a top inclined shape, it is possible to make the thickness by the absorber convex portion when folded and substantially h _a. FIGS. 6A and 6B show an embodiment in which the absorption convex portions do not overlap at all when folded, but at least a part of the rear absorption convex portion 3b is accommodated in the separation region r. A configuration in which a part of the absorption convex portion overlaps when folded as necessary in consideration of the absorption performance or the like can be appropriately employed.

  The individual package of the absorbent article of the present invention is not limited to the above embodiments, and may be a combination of these structures as appropriate or a structure different from this. For example, the front absorption convex portion and the rear absorption convex portion may be changed in consideration of adhesion to the skin and leakage prevention. For example, in the first embodiment, the front absorption convex portion is formed in a rectangular shape. Then, the rear absorption convex portion is formed into a tapered trapezoidal shape toward the article rear portion 1b (see FIGS. 2 and 5), which is preferable in that it easily fits the human body. At this time, it is preferable that the trapezoidal rear absorption convex portion has a base that is wider than the front absorption convex portion. In addition, the rear absorption convex portion may be a triangle or a rectangle.

Further, it is also possible to preferably form an embodiment in which the shapes of the front absorption convex body and the rear absorption convex body in a plan view are selected and both are fitted in the planar direction when folded for individual packaging. FIG. 7 showing such an embodiment is a plan view schematically showing the shape of the absorbent body in the sanitary napkin of still another preferred embodiment (Embodiment 3) of the present invention. The figure is a schematic plan view corresponding to FIG. 5 of the first embodiment. Forward absorbing convex portion 3a provided on the lower absorber 3c has Zhang Extension end t ₃ when projecting toward the article backwards. In contrast rear absorbing convex portion 3b has Nyukomi portion that enters toward the article behind a (notch) s _3. When folded at baseline k ₁ bent by this way, the rear absorber convex portion is disposed in 3d, Nyukomi portion Zhang Extension end t ₃ backwards absorbing convex portion of the front absorbent convex portions 3a (notch part) s ₃ and fitted, it is adapted convex portions each other do not overlap.

FIGS. 8A and 8B are a plan view and a cross-sectional view of the sanitary napkin 1 in which a depression 8 is formed so as to protrude rearward in the plan view in the separation region. The figure shows a sanitary napkin that is further schematically shown as a modification of the embodiment shown in FIG. In addition, auxiliary lines a to f are attached so that the relationship between the plan view of FIG. 8A and the cross-sectional view of FIG. 8B can be easily understood, and the outer shape of the surface sheet and the back sheet, and the article defined by these are indicated by a dashed line. It showed in.
As shown in FIG. 8 (a) above, when the gap between the depressions in the width direction is narrowed by the "8" -shaped depressions 8 protruding rearward, the thickness of the lower layer absorber is reduced. Since the absorption convex part is partially accommodated, the shape of the sanitary napkin in the individual packaging state is easily stabilized.
As shown in FIG. 8 (c), the shape of the depression in the separation region that exhibits the same effect (modified), as shown in (a) U-shaped, (b) C-shaped, The thickness can be directly reduced by the depression as in (c) and (d). In the dent formed in this way, the base line is easily arranged in the dent located on the rear side, and this is preferable because the rear absorption convex portion can be easily stored in the separation region. The depression in FIG. 8C is formed in a form covering almost the entire separation region, and the folding base line is easily formed on the rear side in the longitudinal direction of the depression, but the front absorption convexity is formed so as to be more easily formed on the rear side. It is preferable to be formed to the side of the shape portion 3a. In addition, the hollow of the said modification may be comprised by a linear pressing part like what was shown in figure, and it is good also as a wave-like thing in a cross section by connecting a high pressing part and a low pressing part alternately.

Each member used for each above-mentioned embodiment is explained below.
The top sheet is preferably made of a material that is liquid permeable and soft against the skin. For example, a non-woven fabric made of natural fibers such as cotton or a non-woven fabric made of various synthetic fibers subjected to hydrophilic treatment can be used. The back sheet is preferably made of a liquid-impermeable sheet material. The back sheet may be water vapor permeable as required. Specifically, in order to obtain sufficient water vapor permeability, a film made of synthetic resin such as polyethylene in which fine powder made of a filler such as calcium carbonate is dispersed is stretched and a porous film having fine holes is used. preferable. Moreover, the absorbent article may have a side sheet. Examples of the side sheet include a nonwoven fabric, a film sheet, and paper. From the viewpoint of leakage prevention, the side sheet is preferably formed of a liquid non-permeable or hardly permeable hydrophobic nonwoven fabric, a leakage-proof film sheet, or the like. One sheet may be used, or two or more sheets may be combined with a functional sheet. As the material for forming the absorber, those usually used for absorbent articles can be used. Specifically, for example, a fiber aggregate or a combination of this and a polymer water-absorbing polymer can be used. As the fibers constituting the fiber assembly, hydrophilic natural fibers such as pulp fibers, synthetic fibers (preferably subjected to hydrophilic treatment), and the like can be used. In the present invention, since the front absorption convex portion and the rear absorption convex portion are provided apart from each other, it is possible to use different absorber materials for both convex portions. For example, it is possible to use pulp fibers with emphasis on the front absorption convex portion, and use synthetic fibers with emphasis on fit property on the rear absorption convex portion.

  The absorbent article of the present invention is not limited to the specific configuration of the sanitary napkin described above, and for example, other functional members and structures may be applied. In the present invention, the absorbent article is not particularly limited and includes articles having absorbency such as a liquid, but is preferably a sanitary napkin, a panty liner (orimono sheet), an incontinence pad, or the like.

It is a partial fracture perspective view showing typically an individual package (embodiment 1) of a sanitary napkin which is a preferred embodiment of the present invention. FIG. 2 is a partially broken perspective view schematically showing an absorbent article (a sanitary napkin) when the individual package shown in FIG. 1 is unwrapped and elongated. It is sectional drawing which shows the III-III line cross section in FIG. It is sectional drawing which shows typically a state when the sanitary napkin shown in FIGS. 3-1 is folded. It is sectional drawing which expands and schematically shows the periphery of the hollow in FIGS. It is a top view which shows typically the positional relationship of the absorber of the sanitary napkin in Embodiment 1, and the hollow arrange | positioned there. It is sectional drawing which shows typically the sanitary napkin in another preferable embodiment (Embodiment 2) of this invention. It is sectional drawing which shows typically a state when the absorber shown by FIGS. 6-1 is individually packaged. It is a top view which shows typically the absorber of the sanitary napkin and its folding shape in another preferable embodiment (Embodiment 3) of this invention. FIG. 8 is an explanatory view schematically showing a modification of the sanitary napkin of the present embodiment, FIG. 8 (a) is a plan view of the sanitary napkin, and FIG. 8 (b) is B in FIG. 8 (a). FIG. 8C is a cross-sectional view taken along line B, and FIG. 8C is a plan view showing still another modified example of the indentation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article 1a Article front part 1b Article rear part 2 Back sheet 3 Absorber 3a Front absorption convex part 3b Back absorption convex part 3c Lower layer absorber 4 Top sheet 5 Circumferential emboss 6 Side emboss 7 Wing part 8 Depression 9 Peripheral seal part 10 Absorbent article individual package 11 Packaging sheet 12 Tab 13 Seal part

Claims (5)

  An absorbent article provided with a top sheet, a back sheet, and an absorbent body interposed between the two sheets is an individual package of absorbent articles folded together with a packaging material, and the absorbent body has a wearer's individual package. There are a front absorption convex part and a rear absorption convex part protruding on the skin side, and the both convex parts are arranged separately on the wearer's front abdomen and back abdomen via the separation region, The absorbent article is an individual package of the absorbent article in which the absorbent article is folded at a folding position in the separation region, and all or part of the rear absorbent convex portion is accommodated in the separation region in the folded state.   The protruding height of the rear portion of the front absorbing convex portion is lower than the protruding height of the front portion thereof, and a part of the rear absorbing convex portion is superimposed on the rear portion of the front absorbing convex portion. The individual package of the absorbent article according to claim 1.   The absorbent article according to claim 1 or 2, wherein a dent for joining the absorbent body squeezed from the skin surface side and the top sheet is formed in the separation region of the absorbent body, and the dent is the bent position. Individual packaging.   The recess has an arc shape in a plan view of the article, and the depression has an overhanging portion curved in the arc shape facing the front of the article, and an inward portion curved in the arc shape is the rear absorbing convex shape. The individual packaging body of the absorbent article according to any one of claims 1 to 3, wherein the individual packaging body is disposed near or adjacent to a front end edge of the portion.   The individual packaging body of the absorbent article according to any one of claims 1 to 4, wherein a protruding height of the rear absorbent convex portion is lower than a raised height of the front absorbent convex portion.

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