KR200498166Y1 - Absorbent article - Google Patents

Abstract

The present invention provides an absorbent article that has excellent fit properties and is capable of suppressing leakage of liquid excrement from the end of the rear region in the longitudinal direction.
The absorbent article 1 has, in plan view, a central region A _C facing the groin area of the wearer when worn, and a rear region A B adjacent to the rear side in the longitudinal direction of the central region, and a rear region A _B. It is provided with a pressing portion 14 that integrates the top sheet 2 and the absorber 4 in an area. The compression portion has a shape that is asymmetrical with respect to the longitudinal center line in plan view and includes at least one intersection portion (P1, P2) that intersects the longitudinal center line. The absorbent article is provided in a plan view so as to span the intersection portion on the central region side of at least one intersection portion along the longitudinal direction, and has a longitudinal low rigidity portion LB5 having relatively low rigidity.

Description

Absorbent article {ABSORBENT ARTICLE}

The present invention relates to absorbent articles.

An absorbent article is known that prevents liquid excretion from a wearer of the absorbent article from leaking from the longitudinal end of the absorbent article. For example, Patent Document 1 discloses an absorbent article in which compression grooves are formed to suppress leakage of liquid excrement. The pressing groove includes a pair of first central grooves arranged along the length of the outlet abutting area located in the center of the longitudinal direction of the absorbent article, and a front region located in front or behind the outlet abutting area, or It has a first annular groove disposed in the rear area. In this absorbent article, the first annular groove allows liquid excrement flowing from the excretion port contact area to the front or back area to enter the inside and make it difficult to move to the outside. Therefore, leakage of liquid excrement from the longitudinal end can be suppressed.

Japanese Patent Laid-Open No. 2012-50699

However, since absorbent articles are worn over a long period of time while in contact with the wearer's groin area, they tend to follow the shape of the wearer's body and are easily deformed so as not to cause discomfort or discomfort to the wearer. (i.e., having excellent fit properties) is preferable. For example, when wearing, if pressure directed toward the longitudinal center line in the width direction is applied to the central area (including the excrement abutment area) opposite the wearer's groin area, the surface sheet in the central area and its vicinity The absorber moves closer to the longitudinal center line. As a result, the central region and the rear region can be in a state of protruding toward the wearer, that is, in a mountain fold state when viewed from the top sheet side. In that case, fit to the wearer can be improved.

Additionally, as a compression portion that suppresses leakage of liquid excrement from the longitudinal end, for example, the rear end, a compression groove arranged in the rear region to intersect the longitudinal center line can be considered. The compression groove crossing the longitudinal center line expands the flow of liquid excrement toward the rear side in the longitudinal direction in the width direction, allows liquid excrement to be absorbed into a wide area of the absorber, and prevents leakage of liquid excrement from the rear end. It can be suppressed. As the shape of such a compression portion, various shapes can be considered depending on the purpose or use, for example, curves, straight lines, a combination of them, annular shapes, etc., when viewed in plan with respect to the longitudinal center line ( Shapes that are asymmetrical in a flat view (shapes that are not linearly symmetrical about the longitudinal center line) are also included. For example, in Patent Document 1, shapes such as flowers or hearts are used to give cuteness to an absorbent article and alleviate the wearer's depressed mood during menstruation. In addition, for example, when manufacturing an absorbent article, when the absorbent article is conveyed so that its width direction is parallel to the conveyance direction (MD), the shape of the compression portion is made asymmetrical to cope with the case where the compression portion is misaligned with the width direction. There are cases.

Here, in Patent Document 1, the first annular groove is considered as the pressing groove in the rear region. The first annular groove has at least one bend point, and no more than one bend point intersects the longitudinal center line. From the arrangement of this bend point, the first annular groove has an asymmetric shape in plan view with respect to the longitudinal center line. For example, in Patent Document 1, as the first annular groove, a heart-shaped groove disposed asymmetrically and tilted to one side with respect to the longitudinal center line is exemplified.

With respect to such a first annular groove, as described above, when the central region or the rear region is in a mountain fold state when viewed from the top sheet side, the cutting line of the mountain fold is located on the longitudinal center line. desirable. In that case, since the top of the mountain fold is located along the gluteal fissure of the buttocks, fit properties are improved and leakage of liquid excrement can be suppressed. However, as described above, in the rear region, since the first annular groove is asymmetric with respect to the longitudinal center line, the cutting line passing through the first annular groove may be affected by the shape of the first annular groove and deviate from the longitudinal center line. . If this happens, the top of the mountain fold will deviate from the gluteal fissure of the buttocks, causing the wearer to feel discomfort or discomfort, resulting in reduced fit, and there is also a risk that leakage of liquid excrement may occur. This applies even when the pressing groove is not an annular groove.

The purpose of the present invention is to provide an absorbent article that has excellent fit properties and is capable of suppressing leakage of liquid excrement from the end of the rear region in the longitudinal direction.

The absorbent article of the present invention is as follows. (1) It has a longitudinal direction and a width direction, and has a longitudinal center line extending in the longitudinal direction through the center of the width direction, and a width direction center line extending in the width direction through the center of the longitudinal direction, and a surface. An absorbent article comprising a sheet, a backsheet, and an absorbent positioned between the topsheet and the backsheet, wherein the absorbent article has, in plan view, a central region facing the groin area of the wearer when worn; , a rear region adjacent to the longitudinal rear side of the central region, and a compression portion that integrates the surface sheet and the absorber in the rear region, wherein the compression portion is aligned with the longitudinal center line in a plan view. It has a shape that is asymmetrical with respect to the center line, and includes at least one intersection portion that intersects the longitudinal center line, wherein the absorbent article includes, in a plan view, the intersection portion on the central region side of the at least one intersection portion. An absorbent article that is installed in succession so as to span the longitudinal direction and has a longitudinal low-rigidity portion with relatively low rigidity.

In the present absorbent article, since the compression portion is formed in the rear region, leakage of liquid excrement that has migrated from the central region to the rear region can be prevented from leaking from the ends of the rear region. At that time, the compression portion of the rear region is asymmetrical with respect to the longitudinal centerline (not axisymmetric with respect to the longitudinal centerline). However, the longitudinal low-rigidity portions are installed in succession so as to span the intersection of the compression portions along the longitudinal direction, that is, to overlap the intersection in plan view. Here, because the longitudinal low-rigidity portion has relatively low rigidity, the rear region has the characteristic of being easily folded in the width direction along the longitudinal direction in the longitudinal low-rigidity portion. Therefore, when worn, when the central region and the rear region are in a mountain fold state when viewed from the topsheet side, the rear region is folded in the longitudinal low-rigidity portion spanning the intersection of the compression portion, and a mountain fold is formed. In other words, it is possible to form a mountain fold along the longitudinal center line. Thereby, the top of the mountain fold can be made the position of the buttocks fissure, and the fit can be improved, while leakage of liquid excrement from the end of the rear region can be suppressed.

The absorbent article of the present invention is (2) the longitudinal low rigidity portion is formed in the longitudinal direction at least in a range overlapping the compression portion at the longitudinal center line in the width direction, (1) ) may be an absorbent article described in .

In the present absorbent article, the longitudinal low rigidity portion is formed in a range where the longitudinal center line and the compression portion overlap in the width direction. That is, when the compression portion is projected on the longitudinal center line, the longitudinal low-rigidity portion is formed in a range where the projection of the compression portion on the longitudinal center line overlaps with the longitudinal center line. In other words, the longitudinal low rigidity portion is formed in the range of the maximum width in the longitudinal direction of the area where the compression portion exists. In this way, since the longitudinal low-rigidity portion is sufficiently long, a mountain fold along the longitudinal center line can be stably formed, regardless of the shape of the compression portion. Thereby, fit properties can be further improved.

The absorbent article of the present invention may be the absorbent article described in (1) or (2) above, wherein (3) the longitudinal low rigidity portion is formed of a low basis weight portion with a relatively low basis weight in the absorbent body.

In the present absorbent article, the longitudinal low rigidity portion is formed from the low basis weight portion of the absorbent body. Therefore, the rear area can be easily folded in the width direction along the length direction in the longitudinal low rigidity portion. Thereby, mountain folds can be formed more stably in the longitudinal low-rigidity portion, and fit properties can be further improved.

The absorbent article of the present invention is (4) installed in succession in the rear region, on both sides of the longitudinal low-rigidity portion in the width direction, parallel to the center line in the width direction so as to be spaced apart from the longitudinal low-rigidity portion, The absorbent article according to any one of (1) to (3) above may be used, further comprising a width direction low rigidity portion with relatively low rigidity.

If a mountain fold along the longitudinal center line is formed in the rear area, there is a risk that the end of the rear area may fall off from the curved surface of the buttocks, depending on the degree of the mountain fold. In order to cope with this, a low-rigidity portion is formed continuously parallel to the center line in the width direction from one end edge in the width direction to the other end edge in the rear area so that the end of the rear area does not separate from the curved surface of the buttocks. You can think of something. However, depending on the wearer's posture or movement, the movement of the rear portion may be more intense or greater than that of the low-rigidity portion, causing the low-rigidity portion to collapse, and the folds of the rear portion may deviate from the longitudinal center line. There are concerns.

Therefore, in the present absorbent article, a width direction low rigidity portion extending along the width direction center line is provided on both sides of the longitudinal low rigidity portion in the width direction, and the longitudinal low rigidity portion and the width direction low rigidity portion are spaced apart from each other. The low rigidity portion in the width direction makes it easier to bend the rear region along the curved surface of the buttocks, making it possible to bring the rear region into contact with the buttocks up to its end. In addition, by separating the longitudinal low-rigidity portion and the width-direction low-rigidity portion, that is, by having a non-low-rigidity portion between the two, it is possible to suppress the width-direction low-rigidity portion from collapsing, and the rear side thereof It is possible to ensure that the mountain fold of the portion does not deviate from the longitudinal center line. Thereby, fit properties can be improved and leakage of liquid excrement from the end of the rear region can be suppressed.

The absorbent article of the present invention may be the absorbent article described in (4) above, wherein (5) the low rigidity portion in the width direction is formed of another low basis weight portion whose basis weight in the absorber is relatively low.

In the present absorbent article, the low rigidity portion in the width direction is formed from the low basis weight portion of the absorbent body. Therefore, the rear area can be made to follow the buttocks more stably due to the low basis weight portion of the width direction low rigidity portion, and the non-low rigidity portion between the longitudinal low rigidity portion and the width direction low rigidity portion allows the rear area to follow the buttocks more stably. Collapse of the low-rigidity part can be further suppressed. Thereby, fit properties can be further improved.

The absorbent article of the present invention may be the absorbent article according to any one of (1) to (5) above, wherein (6) the width direction dimension of the longitudinal low rigidity portion is larger than the width dimension of the compression portion. .

In the present absorbent article, the width direction of the longitudinal low-rigidity portion is larger than the width dimension (thickness) of the compression portion, so that when forming a mountain fold in the longitudinal low-rigidity portion, it is more difficult to be influenced by the shape of the compression portion. You can. Thereby, mountain folds can be formed more stably in the longitudinal low-rigidity portion. Thereby, fit properties can be further improved.

The absorbent article of the present invention may be the absorbent article according to any one of (1) to (6) above, wherein (7) the compression portion has an annular shape in plan view.

In the present absorbent article, since the compression portion has an annular shape, it is possible to make it difficult for liquid excrement to enter the inside and move to the outside, thereby further suppressing leakage of liquid excrement from the rear end in the longitudinal direction. can do. However, it is also conceivable that at that time, the rigidity of the annular region of the compression portion increases, making it difficult for the rear region to be in a mountain fold state. However, in the present absorbent article, the rear region is provided with a longitudinally low rigidity portion and is less susceptible to the influence of the rigidity of the compression portion region, so the rear region can be placed in a mountain fold state. By doing so, fit properties can be further improved and leakage of liquid excrement from the end of the rear area can be further suppressed.

The absorbent article of the present invention may be the absorbent article described in (7) above, wherein (8) the compression portion has at least two convex portions in a portion of the annular shape that are convex toward the inside or outside of the annular shape. do.

When the pressing portion has at least two convex portions that are convex toward the inside or outside of the annular shape in a portion of the annular shape, a bending point is created between one convex portion and the other convex portion. The bending point of such a compression portion easily becomes the starting point of a mountain fold, and as a result, there is a risk that the cutting line of the mountain fold may deviate from the longitudinal center line. However, in the present absorbent article, since the rear region is provided with a longitudinal low-rigidity portion and is less susceptible to the influence of the bending point of the compression portion, the peak fold state can be made such that the fold line of the peak fold follows the longitudinal center line. there is. By doing so, fit properties can be further improved and leakage of liquid excrement from the end of the rear area can be further suppressed.

The absorbent article of the present invention is any one of (1) to (8) above, wherein (9) the absorbent body has a depression toward the skin on the surface of the non-skin surface side corresponding to the intersection portion. It may be an absorbent article described in .

Since this absorbent article has a depression on the surface of the non-skin surface side corresponding to the intersection in the absorbent body, the absorbent body can be easily deformed to be convex upward along the buttocks, and the rear area can be more easily put into a mountain fold state. You can. Thereby, the fit can be further improved and leakage of liquid excrement from the end of the rear area can be further suppressed.

According to the present invention, it is possible to provide an absorbent article that has excellent fit properties and is capable of suppressing leakage of liquid excrement from the end of the rear region in the longitudinal direction.

1 is a plan view showing a configuration example of a sanitary pad according to an embodiment.
FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1.
Figure 3 is a cross-sectional view taken along line III-III in Figure 1.
Figure 4 is a schematic diagram explaining the effects of the sanitary pad according to the embodiment.
Figure 5 is a schematic diagram explaining the effects of the sanitary pad according to the embodiment.
Fig. 6 is a schematic diagram showing a configuration example of a sanitary pad manufacturing apparatus according to the embodiment.
Fig. 7 is a plan view showing another configuration example of a sanitary pad according to the embodiment.
Fig. 8 is a plan view showing another example of the configuration of the sanitary pad according to the embodiment.

The absorbent article according to the embodiment will be described as an example of a sanitary pad. However, the types and uses of the absorbent article of the present invention are not limited to these examples, and can be applied to other absorbent articles as long as they do not deviate from the scope of the subject matter of the present invention. Other absorbent articles include, for example, panty liners, light incontinence pads, and disposable diapers.

1 to 3 are diagrams showing a structural example of the sanitary pad 1 according to the embodiment. However, FIG. 1 is a plan view showing the sanitary pad 1 in an unfolded state, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1. The sanitary pad 1 of this embodiment has a longitudinal direction (L), a width direction (W), and a thickness direction (T) that are orthogonal to each other. In the sanitary pad 1 depicted in FIG. 1, the upper and lower sides are respectively the front and rear sides in the longitudinal direction (L), the left and right sides are respectively the left and right sides in the width direction (W), and the paper For , the front and medial sides are the upper and lower sides of the thickness direction (T), respectively. The sanitary pad 1 has a longitudinal center line (C _L ) (imaginary line) extending in the longitudinal direction (L) through the center of the width direction (W), and a longitudinal center line (imaginary line) extending in the longitudinal direction (L) through the center of the longitudinal direction (L). It has a width direction center line (C _W ) (imaginary line) extending to W). The direction and side facing the longitudinal center line C _L are set inward and inside the width direction W, respectively, and the directions and sides moving away are set outward and outside in the width direction W, respectively. Meanwhile, the direction and side facing the width direction center line C _W are set inward and inside the longitudinal direction L, respectively, and the direction and side moving away are set outward and outside in the longitudinal direction L, respectively. The sanitary pad 1 placed on a plane including the longitudinal direction (L) and the width direction (W) when viewed from above in the thickness direction (T) is called “planar view,” and the shape seen in planar view is called “planar view.” It is called a “flat shape.” Any direction in the plane including the longitudinal direction (L) and the width direction (W) is called the “plane direction.” When the wearer positioned above wears the sanitary pad 1, the side that is relatively close to and far from the wearer's skin surface in the thickness direction T is called the “skin side” and the “non-skin side.” These definitions are also commonly used for each material of the sanitary pad 1.

In this embodiment, the sanitary pad 1 (excluding the wing portion) is substantially rectangular in plan view, long in the longitudinal direction (L) and short in the width direction (W), with edges at both ends in the longitudinal direction (L). has an approximately semicircular shape. However, the shape is not particularly limited as long as it is long in the longitudinal direction (L) and short in the width direction (W), and examples include a rectangular shape with rounded corners, an oval shape, an hourglass shape, or shapes similar thereto. The sanitary pad 1 has a wing portion 6 extending outward in the width direction W from a substantially rectangular portion, and the wing portion 6 has a substantially trapezoidal shape. However, the shape of the wing portion 6 may be, for example, semicircular or semielliptical.

The sanitary pad 1 includes a liquid-permeable front sheet 2 constituting the skin-side surface, a liquid-impermeable back sheet 3 constituting the non-skin-side surface, and a top sheet ( 2) and an absorber 4 having liquid absorbing and liquid holding properties disposed between the back sheet 3 and the back sheet 3. In this embodiment, the absorbent body 4 includes an absorbent core 4a and a core wrap 4b covering the absorbent core 4a. In the sanitary pad 1, the non-skin side surface of the topsheet 2 and the skin side surface of the absorbent body 4 are joined with an adhesive, and the non-skin side surface of the absorbent body 4 and the backsheet 3 ) is bonded to the skin side with an adhesive, and the edge portion of the non-skin side surface of the top sheet 2 (including the wing portion 6) and the edge portion of the skin side surface of the back sheet 3 ( The wing portions (6) are joined with adhesive or heat seal. Additionally, the sanitary pad 1 may be made up of a plurality of absorbents (or a plurality of absorbent cores) stacked together. Additionally, the sanitary pad 1 may be further provided with an auxiliary sheet or a pair of side sheets. In that case, the auxiliary sheet is, for example, disposed between the top sheet 2 and the absorber 4, and each of the pair of side sheets has, for example, a ratio in the top sheet 2 or the auxiliary sheet. The inner end in the width direction (W) is disposed so as to overlap each of the two ends in the width direction (W) on the skin side. In that case, the absorber 4 is positioned between the top sheet 2 or the auxiliary sheet and the pair of side sheets and the back sheet 3. Additionally, the sanitary pad 1 may be provided with an exterior sheet on the non-skin side of the backsheet 3. In this embodiment, the sanitary pad 1 is further provided with fixing portions 7 and 8.

In the sanitary pad 1, when viewed in plan, an excretory abutment area XA is set slightly in front of the center in the longitudinal direction L and at the center in the width direction W. The excretory opening contact area The excrement outlet contact area (XA) is set according to the type and purpose of the absorbent article. The excrement abutment area It is set at approximately the center of the absorber 4 in the width direction W and has a width of about 1/2 to 1/3 of the total length of the absorber 4 in the width direction W.

In this embodiment, the sanitary pad 1 has a front area (A _F ), a center area (A _C ), and a back area ( _AB ) from the front to the back in the longitudinal direction (L) in plan view. have The central area (A _C ) is an area that faces the wearer's groin area when worn, and in this embodiment includes the excrement mouth contact area (XA). The anterior region (A _F ) and the posterior region ( _AB ) are regions adjacent to the anterior and posterior sides of the central region (A _C ) in the longitudinal direction (L), respectively.

The sanitary pad 1 is located in the back area A _B (back in the longitudinal direction L of the excrement abutment area 14) is provided. The pressing portion 14 is formed in a groove shape by pressing the top sheet 2 and the absorber 4 in the thickness direction T. The compression portion 14 has a shape that is asymmetrical with respect to the longitudinal center line C _L in plan view, that is, a heart shape. The compression portion 14 includes two intersection portions P1 and P2 that intersect with the longitudinal center C _L . However, the shape of the pressing portion 14 is not limited to this example, and is arranged in the rear area A _B to intersect the longitudinal center line C _L and is asymmetrical with respect to the longitudinal center line C _L It may be a shape (a shape that is not line symmetrical with respect to the longitudinal center line C _L ) and include at least one intersection portion that intersects the longitudinal center line C _L . Such a pressing portion 14 expands the flow of liquid excrement toward the rear in the longitudinal direction L in the width direction W, thereby widening the width of the absorber 4 including the areas at both ends in the longitudinal direction L. This is preferable because liquid excrement can be absorbed over a wide area and leakage of liquid excrement from the rear end can be suppressed. In addition, the asymmetrical shape is such that there is no problem in performance when the sanitary pad 1 is transported so that the width direction W of the sanitary pad 1 is parallel to the transport direction MD when manufacturing the sanitary pad 1. When (14) is misaligned with the width direction W, the misalignment can be prevented from being noticed, which is preferable.

The pressing portions 14 are formed as groove-shaped or point-shaped concave portions surrounding the edges. The shape of the compression portion 14 in plan view includes, for example, a curved shape, a straight shape, a point shape, a combination thereof, a circular shape, an elliptical shape, a polygonal shape, etc. Among them, in planar view, it is preferable to have an annular shape such as a heart shape (this embodiment), a circle, an oval, a polygon, a star, a flower, a leaf, a face, or the outline of a creature. It can make it _difficult for liquid excrement flowing from the excretion port contact area It can be alleviated. Such an annular shape may have at least two parts that are convex to the inside or outside of the annular shape, and may have a bending point between the two parts. For example, the heart-shaped pressing portion 14 has two outwardly convex portions 14Q1 and 14Q2, and has a bend point R between the two convex portions.

In this embodiment, the sanitary pad 1 is further provided with pressing portions 11 to 15 formed into grooves by pressing the top sheet 2 and the absorbent body 4 in the thickness direction T. The pair of compression parts 12, 12 and 13, 13 are located on both outer sides of the excrement abutment area XA in the width direction W, and are installed continuously or intermittently in succession. This is to spread the liquid excrement spreading in the width direction (W) in the longitudinal direction (L). The compression portion 11 is located in the front of the excretory outlet contact area XA in the longitudinal direction L and is formed in an annular shape. This is to expand the flow of liquid excrement toward the front in the longitudinal direction (L) in the width direction (W) and suppress leakage of liquid excrement from the front end. The pressing portion 15 is located within the excretory opening contact area XA and is formed in a dot shape. This is to spread liquid excrement in the thickness direction (T). The compression portions 12, 13, and 15 are located in the central area (A _C ), and the compression portion 11 is located in the front area (A _F ). Additionally, the shape of the pressing portions 11 to 13, 15 is not particularly limited as long as it is a shape that can spread the liquid excretion excreted in the excrement abutting area XA over a wider range. Additionally, the sanitary pad 1 does not need to be provided with at least one of the pressing portions 11 to 13 and 15.

The absorber 4 is a layer that has liquid absorption performance and liquid holding performance. In the present embodiment, it is long in the longitudinal direction L in plan view, and both ends in the longitudinal direction L have a substantially semicircular shape. The absorber 4 has a low rigidity portion (LB) with relatively low rigidity, and a portion other than the low rigidity portion (LB), that is, a high rigidity portion (HB) with relatively high rigidity.

The low-rigidity portion LB of the absorber 4 is a longitudinal low-rigidity portion LB5 provided continuously along the longitudinal direction L in the rear area A _B in a plan view so as to overlap the longitudinal center line C _L. ) is included. And, in plan view, the longitudinal low-rigidity portion LB5 is located in the central area A _C of the intersection portions P1 and P2 (a portion that intersects the longitudinal center line C _L in the compression portion 14). They are installed in succession so as to span the side intersection P1 along the longitudinal direction L. In this embodiment, the longitudinal low rigidity portion LB5 is formed in a strip or rectangular shape along the longitudinal direction L from the vicinity of the excrement outlet contact area XA to the end edge in the longitudinal direction L, and has a length of It includes a front low-stiffness section (LB5a) located in the front in direction (L) and a back low-stiffness section (LB5b) located in the rear. However, the longitudinal low-rigidity portion LB5 is not limited to this example, and, in plan view, spans the intersection portion on the central area A _C side among the intersection portions of the compression portion 14 along the longitudinal direction L. They just need to be installed in succession. Thereby, when deforming the absorber 4, it is easier to use the longitudinal low rigidity portion LB5 as a starting point rather than the compression portion 14.

In this embodiment, the longitudinal low rigidity portion LB5 has a width at least between the longitudinal center line C _L and the compression portion 14 in the longitudinal direction _L. It is formed in an overlapping range in the direction (W). For example, as shown in FIG. 1, when the compression portion 14 is projected on the longitudinal center line C _L , the compression portion 14 extends from the point Z1 to the point Z2 on the longitudinal center line C _L. ) is projected as a range. Therefore, the longitudinal low-rigidity portion LB5 is at least in the range where the longitudinal center line C _L overlaps the projection of the compression portion 14, that is, at the longitudinal center line C _L , that is, from the point Z1. It is formed in the range of (Z2). And, the dimension (length) of the longitudinal low rigidity portion LB5 in the longitudinal direction L is at least equal to or greater than the dimension (length) from the point Z1 to the point Z2. As a result, the absorber 4 can be deformed starting from the longitudinal low-rigidity portion LB5 while suppressing the influence of the compression portion 14.

In this embodiment, the dimension (width) of the longitudinal low-rigidity portion LB5 in the width direction W is larger than the width dimension (thickness) of the compression portion 14. For example, as shown in FIG. 3, the dimension D1 in the width direction W of the longitudinal low-rigidity portion LB5 (front low-rigidity portion LB5a) is the width dimension of the pressing portion 14 ( It is bigger than D2). As a result, deformation of the absorber 4 starting from the longitudinal low-rigidity portion LB5 can be made more likely than deformation of the absorber 4 starting from the compression portion 14.

In this embodiment, the low-rigidity portion LB of the absorber 4 has a length on both sides of the width direction W in the longitudinal low-rigidity portion LB5 in the back area A _B in plan view. It further includes width direction low rigidity parts (LB4, LB4) installed in succession parallel to the width direction center line (C _W ) so as to be spaced apart from the direction low rigidity part (LB5). However, spaced apart from the longitudinal low-rigidity portion LB5 on both sides of the width direction W means not only spaced apart from the longitudinal low-rigidity portion LB5 in parallel to the width direction W, but also in the width direction W. are spaced apart in parallel, and in a range of about 1/3 of the length of the longitudinal low-rigidity portion LB5, from the inner end edge in the longitudinal direction L of the longitudinal low-rigidity portion LB5 in the longitudinal direction L. This includes cases of separation within a remote range (however, a range that does not reach the excrement contact area (XA)). The range of approximately 1/3 of the length of the longitudinal low-rigidity portion LB5 is the range within which the mountain fold in the longitudinal low-rigidity portion LB5 can easily be reached. Additionally, the distance separating the width direction low rigidity portion LB4 and the longitudinal low rigidity portion LB5 is, for example, 1/10 to 1/2 of the width of the absorber 4 in the width direction W. can be mentioned, and 1/8 to 1/4 is preferable. However, the width of the absorber 4 in the width direction W is the width at the position of the width direction low rigidity portion LB4 in the longitudinal direction L. In this case, between the longitudinal low-rigidity portion LB5 and the width-direction low-rigidity portions LB4 and LB4, high-rigidity portions HBS and HBS, which have a higher rigidity than the low-rigidity portions LB4 and LB5, are formed.

In this embodiment, the low-rigidity portion LB of the absorber 4 further includes width-direction low-rigidity portions LB1 to LB3 and LB6 provided in succession parallel to the width-direction center line C _W . The width direction low rigidity part LB1 is located in the center area A _C near the border between the front area A _F and the center area A _C in the absorber 4, and has a predetermined width in the width direction W. It is located to be serialized. This is to make the front area (A _F ) follow the body. The width direction low rigidity parts LB2 and LB2 are predetermined on both sides of the absorber 4 except for the center part (excretion abutment area XA) in the width direction W in the center area A _C , respectively. It is located so that it extends across the width in the width direction (W). The width direction low rigidity parts LB3, LB3 are predetermined on both sides of the absorber 4 except for the center part (excretion abutment area XA) in the width direction W in the center area A _C , respectively. They are spread across the width in the width direction (W) and are located at intervals behind the low-rigidity portions LB2 and LB2 in the longitudinal direction (L). This is to make the central area (A _C ) conform to the body. The width direction low rigidity portion LB6 is located in the absorber 4 so as to extend in the width direction W at a predetermined width at approximately the center of the rear area A _B in the longitudinal direction L. This is to make the rear area (A _B ) conform to the body.

In this embodiment, each of the low-rigidity portions LB1 to LB4 and LB6 are positioned so as to reach the end edge of the absorber 4 in the width direction W. Additionally, at least one of the low-rigidity portions LB1 to LB4 and LB6 does not need to reach the end edge of the absorber 4. Additionally, in the front low-rigidity portion LB5a, the front end in the longitudinal direction L extends between the width-direction low-rigidity portions LB4 and LB4, and the rear end is connected to the width-direction low-rigidity portion LB6. Additionally, the front end does not need to extend between the width direction low-rigidity portions LB4 and LB4, and the rear end does not need to be connected to the width direction low-rigidity portion LB6. Additionally, in the rear low-rigidity portion LB5b, the front end in the longitudinal direction L is connected to the width-direction low-rigidity portion LB6, and the rear end reaches the end edge of the absorber 4. Additionally, the front end does not need to be connected to the width direction low rigidity portion LB6, and the rear end does not need to reach the end edge of the absorber 4.

Meanwhile, in this embodiment, the high-rigidity portion (HB) includes high-rigidity portions (HB1 to HB4). The high-rigidity portion HB1 is located in the absorber 4 ahead of the low-rigidity portion LB1 in the width direction in the longitudinal direction L. The high rigidity portion HB2 is located between the width direction low rigidity portion LB1 and the width direction low rigidity portion LB6 in the longitudinal direction L in the absorber 4 (width direction low rigidity portion LB2, (Excluding LB3)). The high-rigidity portions HB3 and HB4 are located behind the low-rigidity portion LB6 in the longitudinal direction in the absorber 4 and on the left side in the width direction W of the low-rigidity portion LB5 in the longitudinal direction. and is located on the right. The high rigidity portions (HBS, HBS) are located between the width direction low rigidity portions (LB4, LB4) in the high rigidity portion (HB2), or between the width direction low rigidity portions (LB4, LB4) and the front low rigidity portion (LB5a). there is.

In this embodiment, each low-rigidity portion LB is a portion of the liquid-absorbing and liquid-holding absorbent material constituting the absorber 4, such as hydrophilic fiber or high-absorbent polymer, with a relatively low basis weight, and has a low basis weight. It can be said to be wealth. On the other hand, the high rigidity portion (HB) is a portion where the basis weight of the absorbent material constituting the absorber 4 has a relatively high basis weight, and can be said to be a high basis weight portion. In that case, for example, as shown in FIG. 3, the longitudinal low-rigidity portion LB5 (front low-rigidity portion LB5a) and the width-direction low-rigidity portion LB4 are relatively thin, and the high-rigidity portion HBS is relatively thin. It is relatively thick. And, since the portion (position) corresponding to the low basis weight portion of the absorbent body 4 in the sanitary pad 1 has lower rigidity than the portion (position) corresponding to the high basis weight portion, it is relatively easy to bend. .

The basis weight of the absorber was measured by the following method. (1) A 5 mm x 10 mm section was cut from the sheet to serve as a sample. (2) The sample was dried in an air atmosphere of 100°C or higher. (3) The mass of the sample was measured. (4) The basis weight of the sample was calculated by dividing the measured mass by the area of the sample. (5) The average of the basis weight of 10 samples was taken as the basis weight of the sheet.

However, the low-rigidity portion LB is not limited to this example, and is, for example, a portion of the absorber 4 in which at least one cut (e.g., half cut, full cut) is made in the thickness direction T. This can be realized by, for example, the part where the density of the absorbent material in the absorber 4 is relatively low. In that case, the high rigidity portion HB is a portion of the absorber 4 that has no indentation or a portion of the absorber 4 where the density of the absorbent material is high.

In this embodiment, the pressing portions 11 to 15 are weakly pressed and formed at a shallow position, and a low-density part (LPA) with a relatively low fiber density is formed, and a low density part (LPA) is strongly pressed and formed at a deep position, and the fiber density is relatively low. It has a relatively high high density area (HPA). However, the standard for “shallow” and “deep” is the skin-side surface of the topsheet 2. The low-density portion (LPA) and the high-density portion (HPA) can be said to be the shallow bottom portion and the deep bottom portion of each compression portion. The low-density portion (LPA) and high-density portion (HPA) of the compression portions 11 to 15 are located within the absorbent core 4a of the absorbent body 4. However, the high-density portion (HPA) may reach the core wrap 4b on the non-skin side. For example, as shown in FIG. 3, the compression portion 14 is a low-density portion formed at a shallow position in the width direction low rigidity portion LB4 and the longitudinal low rigidity portion LB5 (front low rigidity portion LB5a). (LPA) and a high density area (HPA) formed at a deep location.

In this embodiment, the surface of the absorber 4 on the non-skin surface side corresponding to the intersection P1 has a depression BTA that is depressed toward the skin. For example, as shown in FIG. 3, in the longitudinal low-rigidity portion LB5 (front low-rigidity portion LB5a), the pressing portion 14 is located along the longitudinal center line C _L (in FIG. 3, the longitudinal center line ( On the surface of the non-skin surface side corresponding to the intersection P1 that intersects the plane (F _T ) perpendicular to the width direction (W) including C _L ), a depression (BTA) that is depressed toward the skin side is formed. It is done. Therefore, since the intersection portion P1 is located in the front low-rigidity portion LB5a, is located in the compression portion 14, and is also located in the depression portion BTA, the absorber 4 has the intersection portion P1. It is easy to modify from a starting point.

In this embodiment, the thickness of each low-rigidity portion LB can be, for example, 0.8 to 20 mm, and the thickness of each high-rigidity portion HB can be, for example, 1 to 30 mm. The height of each low-density portion (LPA) from the backsheet 3 is, for example, 0.3 to 10 mm, and the height of each high-density portion (HPA) from the backsheet 3 is, for example, 0.2 to 9 mm. The height of each depression (BTA) from the back sheet 3 is, for example, 0.2 to 4 mm.

In addition, the number, position, and shape of each high-rigidity portion, each low-rigidity portion, and each compression portion described above are examples, and the present invention is not limited to these examples.

As the materials for the top sheet (2), the absorber (4), the back sheet (3), the auxiliary sheet, and the fixing parts (7, 8), known materials that are generally available in the sanitary pad (1) can be used. there is. Materials of the top sheet 2 include, for example, non-woven fabric, woven fabric, synthetic resin film with liquid permeable pores, and composite sheets thereof. Nonwoven fabrics include, for example, natural fibers (e.g. cotton), recycled fibers, inorganic fibers, synthetic resin fibers, etc. The basis weight of the surface sheet 2 is, for example, 5 g/m 2 to 100 g/m 2 , and 20 g/m 2 to 50 g/m 2 is preferable. The thickness of the top sheet 2 is, for example, 0.2 to 5 mm. Materials for the absorbent body 4 include, for example, absorbent fibers such as pulp fibers and synthetic fibers, and superabsorbent polymers (SAP). The basis weight of the fibers of the absorber 4 is, for example, 5 to 1000 g/m2. Among these, the basis weight of the high rigidity portion (high basis weight portion) HB is, for example, 150 to 1000 g/m 2 , and is preferably 300 to 600 g/m 2 from the viewpoint of absorbency and wearability. On the other hand, the basis weight of the low rigidity portion (low basis weight portion) LB can be, for example, 50 to 300 g/m2, and is preferably 50 to 150 g/m2 from the viewpoint of absorbency and deformability. The basis weight of the superabsorbent polymer is, for example, 0 to 500 g/m2, and is preferably 10 to 400 g/m2. The thickness of the absorber 4 is, for example, 1 to 40 mm, and is preferably 5 to 30 mm. When the absorbent body 4 has an absorbent core and a core wrap, materials for the absorbent core include absorbent fibers and superabsorbent polymers, and materials for the core wrap include liquid-permeable hydrophilic fibers such as tissue. You can. Materials of the backsheet 3 include, for example, waterproof nonwoven fabric, synthetic resin film, composite sheet of nonwoven fabric and synthetic resin film, SMS nonwoven fabric, etc. Examples of materials for the auxiliary sheet include non-woven fabric, pulp fiber, and synthetic fiber. Examples of materials for the fixing portions 7 and 8 include adhesives such as styrene-butadiene copolymer. As the adhesive for bonding each material, a known material that can be used in the sanitary pad 1, for example, a hot melt adhesive, can be used.

Next, the effects of the sanitary pad 1 according to this embodiment will be explained. Fig. 4 is a schematic diagram explaining the effects of the sanitary pad 1 according to the embodiment. Fig. 4(a) shows the rear area A _B of the sanitary pad 1a, which, unlike the sanitary pad 1 of the embodiment, does not have the longitudinal low rigidity portion LB5 in the absorbent body 4. On the other hand, Fig. 4(b) shows the sanitary pad 1 according to the embodiment, and shows the rear area A _B of the sanitary pad 1, where the absorbent body 4 has a longitudinal low rigidity portion LB5.

Referring to FIG. 4(a), in the sanitary pad 1a, the compression portion 14 is formed in the back area A _B , so that the pressure moves from the center area A _C to the back area A _B. There is a possibility to suppress leakage of hot liquid excrement from the end of the rear area A _B. Here, since the pressing portion 14 of the rear area _AB is asymmetric with respect to the longitudinal center line C _L , the rear area A _B is located between the bending points in the shape of the pressing portion 14. It has the characteristic of being easily folded along the straight line (Q1) connecting the . Therefore, when worn, when the central area (A _C ) and the back area ( _AB ) are in a mountain-folded state when viewed from the topsheet 2 side, a straight line connecting the bending points of the compression portion 14 There is a risk that the rear area (A _B ) is folded along (Q1), forming a mountain fold. That is, the cutting line of the mountain fold may deviate from the longitudinal center line C _L due to the influence of the asymmetrical shape of the pressing portion 14. If that happens, the top of the mountain fold will deviate from the gluteal fissure, causing the wearer to feel discomfort or discomfort, resulting in reduced fit, and at the same time, there is a risk that leakage of liquid excrement may occur.

However, referring to FIG. 4(b), in the sanitary pad 1 of the present embodiment, the pressing portion 14 is formed in the rear area A _B , _so that the rear area ( It is possible to suppress leakage of liquid excrement that has moved into _AB ) from the end of the rear area ( _AB ). Here, the pressed portion 14 of the rear area A _B is asymmetric with respect to the longitudinal center line C _L . However, the longitudinal low-rigidity portions LB5 are installed in succession so as to span the intersection of the compression portions 14 along the longitudinal direction L, that is, to overlap the intersection in plan view, and the longitudinal low-rigidity portions LB5 has relatively low rigidity. Therefore, the rear area A _B is not along the straight line connecting the bending points in the shape of the compression portion 14, but along the longitudinal low rigidity portion LB5, that is, along the straight line Q2 in the drawing. It has the characteristic of being easily folded in the width direction (W). Therefore, when worn, when the center area A _C and the rear area A _B are in a mountain folded state when viewed from the top sheet 2 side, the longitudinal low rigidity portion spanning the intersection of the compression portions 14 The rear region ( _AB ) is folded along (LB5), i.e. along the straight line (Q2), forming a mountain fold. Therefore, it is possible to form a mountain fold along the longitudinal center line (C _L ). Thereby, the top of the mountain fold can be made the position of the buttocks fissure, and the fit can be improved, while leakage of liquid excrement from the end of the rear region can be suppressed.

In a preferred embodiment of the present embodiment, the longitudinal low-rigidity portion LB5 includes, in the longitudinal direction L, at least the longitudinal center line C _L and the compression portion 14 in the longitudinal center line C _L. ) is formed in an overlapping range in the width direction (W). That is, the longitudinal low rigidity portion LB5 is formed to include the projected range of the compression portion 14 on the longitudinal center line C _L , that is, the range between the point Z1 and the point Z2. there is. In other words, the longitudinal low rigidity portion LB5 is formed in the maximum width range in the longitudinal direction L of the region where the compression portion 14 exists. In this way, since the longitudinal low-rigidity portion LB5 is sufficiently long, a mountain fold along the longitudinal center line C _L can be stably formed, regardless of the shape of the compression portion 14. Thereby, fit properties can be further improved.

In the present embodiment, as a preferred embodiment, the longitudinal low rigidity portion LB5 is formed as a low basis weight portion of the absorber 4 with a relatively low basis weight. Therefore, the rear area A _B can be easily folded in an acid fold in the width direction W along the longitudinal direction L at the longitudinal low rigidity portion LB5. Thereby, mountain folds can be formed more stably in the longitudinal low-rigidity portion LB5, and fit properties can be further improved.

In the present embodiment, as a preferred embodiment, in the rear area _AB , the width direction center line is located on both sides of the longitudinal low rigidity portion LB5 in the width direction W, away from the longitudinal low rigidity portion LB5. It is installed in succession parallel to (C _W ) and is provided with width-wise low-rigidity parts LB4 and LB4 with relatively low rigidity. Its effects are as follows. Fig. 5 is a schematic diagram explaining the effects of the sanitary pad 1 according to the embodiment. FIG. 5(a) shows the rear area of the sanitary pad 1a having a widthwise low-rigidity portion LB4′ connected without being spaced apart from the longitudinal low-rigidity portion LB5, unlike the sanitary pad 1 of the embodiment. (A _B ). On the other hand, Fig. 5(b) shows the sanitary pad 1 of the embodiment, and shows the back area of the sanitary pad 1 having the width direction low rigidity portions LB4 and LB4 spaced apart from the longitudinal low rigidity portion LB5. (A _B ).

In the sanitary pad 1a, when a mountain fold along the longitudinal center line C _L is formed in the rear area A _B , the end of the rear area A _B is separated from the curved surface of the buttocks depending on the degree of the mountain fold. There is a risk of falling. In order to deal with this, for example, referring to FIG. 5(a), in the rear area _AB , one side in the width direction W is kept so that the end of the rear area _AB does not separate from the curved surface of the buttocks. It is conceivable that the width direction low rigidity portion LB4' is formed continuously parallel to the width direction center line C _W from one end edge to the other end edge. In this case, the end of the rear area A _B can be made to follow the curved surface of the buttocks by the width direction low rigidity part LB4'. However, depending on the posture or movement of the wearer, the movement of the rear portion becomes greater than the width direction low rigidity portion LB4', and there is a possibility that the width direction low rigidity portion LB4' collapses. In such a case, for example, the portion on one side (example: right side) of the width direction low rigidity portion LB4' in the width direction W shrinks significantly toward the central area A _C (in the drawing, Arrow Y1), the longitudinal center line (C _L ) is inclined to the right in the width direction (W), and there is a risk of being misaligned with the longitudinal center line (C _L ') (arrow K1 in the drawing). If that happens, there is a risk that the mountain fold in the rear area ( _AB ) may deviate from the longitudinal center line (C _L ).

However, referring to FIG. 5(b), in the sanitary pad 1 of the present embodiment, the end of the rear area A _B is positioned in the longitudinal direction in the rear area A _B so as not to separate from the curved surface of the buttocks. On both sides of the low-rigidity portion LB5 in the width direction W, width-direction low-rigidity portions LB4 and LB4 extending along the width-direction center line C _W are formed to be spaced apart from the longitudinal low-rigidity portion LB5. The width direction low rigidity parts LB4, LB4 make it easier to bend the rear area A _B along the curved surface of the buttocks, and the rear area A _B can be brought into contact with the buttocks up to its end. In addition, the longitudinal low-rigidity portion LB5 and the width-direction low-rigidity portions LB4, LB4 are spaced apart, that is, the high-rigidity portions HBS, HBS exist between the two, so that the width-direction low-rigidity portions LB4, LB4 ) can be prevented from collapsing. Thereby, it is possible to prevent the folding of the portion on the rear side of the width direction low-rigidity portions LB4 from deviating from the longitudinal center line C _L . Thereby, fit can be further improved regardless of the wearer's posture or movement, and leakage of liquid excrement from the end of the rear area A _B can be further suppressed.

Here, the front portion of the high-rigidity portion (HBS) in the longitudinal direction L continuously reaches the excrement port contact area It is preferable that it is formed to continuously extend backward beyond LB4, LB4). In addition, it is more preferable that the front portions of the high-rigidity portions (HBS) in the longitudinal direction (L) are connected and formed in an inverted U-shape so as to surround the longitudinal low-rigidity portion (LB5) from three directions as a whole. Thereby, the width direction low rigidity parts LB4, LB4 make it easy to bend the width rear area A _B along the curved surface of the buttocks, improving the fit, while removing the liquid excrement in the excrement outlet contact area XA from the high rigidity part ( In HBS, HBS) (HB2), it can be diffused toward the rear in the longitudinal direction (L), and the rear area ( _AB ) can be effectively used for absorption of liquid excrement.

It is preferable that the compression portion 14 faces both end edges of the absorber 4 in the width direction W in a plan view without intervening any other compression portions. That is, it is preferable that there are no other compression parts between the compression portion 14 and both end edges of the absorber 4 in the width direction W. By not having any other compression portions between the compression portion 14 and both end edges of the absorber 4 in the width direction W, the rear area A _B is formed by the width direction low rigidity portions LB4, LB4. The effect of making it easy to bend along the curved surface of the buttocks can be easily maintained, making it easy to fit the rear area A _B to the buttocks.

In this embodiment, as a preferred embodiment, the width direction low rigidity portions LB4 and LB4 are formed from other low basis weight portions of the absorber 4 that have a relatively low basis weight. Therefore, the rear area A _B can be made to follow the buttocks more stably, and the high rigidity parts (HBS, HBS) between the longitudinal low rigidity parts LB5 and the width direction low rigidity parts LB4, LB4, Collapse of the width direction low-rigidity portions LB4 and LB4 can be further suppressed. Thereby, fit properties can be further improved.

In this embodiment, as a preferred embodiment, the dimension of the longitudinal low-rigidity portion LB5 in the width direction W is larger than the width of the compression portion 14. Thereby, when forming a mountain fold in the longitudinal low-rigidity portion LB5, it can be made less susceptible to the influence of the shape of the pressing portion 14. As a result, mountain folds can be formed more stably in the longitudinal low-rigidity portion LB5. Thereby, fit properties can be further improved.

In this embodiment, as a preferred aspect, the pressing portion 14 has an annular shape in plan view. Therefore, it is possible to make it difficult for the liquid excrement to enter the inside and move to the outside, thereby further suppressing the leakage of the liquid excrement from the rear end in the longitudinal direction L. However, it is also conceivable that at that time, the rigidity of the annular region of the compression portion 14 increases, making it difficult for the rear region A _B to be in a mountain fold state. However, in the sanitary pad 1, the rear area _{A B} ) can be in the state of mountain folding. Thereby, the fit properties can be further improved, and at the same time, leakage of liquid excrement from the end of the rear area A _B can be further suppressed.

As a preferred aspect in this embodiment, the pressing portion 14 has at least two convex portions 14Q1 and 14Q2 that are convex toward the inside or outside of the annular shape in a portion of the annular shape. In that case, a bending point may occur between one convex portion 14Q1 and the other convex portion 14Q2. The bending point of such a compression portion easily becomes the starting point of a mountain fold, and as a result, there is a risk that the cutting line of the mountain fold may deviate from the longitudinal center line C _L . However, in the sanitary pad 1, the back area A _B is provided with the longitudinal low rigidity portion LB5 and is less susceptible to the influence of the bending point of the compression portion 14, so the cutting line of the acid fold is It can be in a state of mountain folding, such as along the longitudinal center line (C _L ). Thereby, the fit properties can be further improved, and at the same time, leakage of liquid excrement from the end of the rear area A _B can be further suppressed.

In this embodiment, as a preferred aspect, the absorber 4 has a depression BTA on the surface of the non-skin surface side corresponding to the intersection P1, which is depressed toward the skin side. Therefore, it is easy to deform the absorber 4 so that it is convex upward along the buttocks, and the rear area A _B can be more easily brought into a mountain-folded state. Thereby, the fit property can be further improved, and at the same time, leakage of liquid excrement from the end of the rear area A _B can be further suppressed.

Next, the manufacturing method of the sanitary pad 1 according to the present embodiment will be described. Fig. 6 is a schematic diagram showing an example of the configuration of the manufacturing apparatus 300 for the sanitary pad 1. In this example, each material is formed and transported so that the longitudinal direction (L) of the sanitary pad 1 is in the transport direction (MD). However, each material may be formed and transported so that the width direction (W) of the sanitary pad 1 becomes the transport direction (MD).

First, the rotary drum 111 is rotated, and the stacked material supplied from the material supply machine 113 is deposited in the groove communicating with the negative pressure chamber 111N of the pattern plate 112, and the stacked material ( AB) is formed. Here, a deep groove, that is, a groove for forming a high rigidity portion (high basis weight portion) (HB), and a shallow groove, that is, a groove for forming a low rigidity portion (low basis weight portion) (LB), are formed in the groove of the pattern plate 112. It is done. Then, a high-rigidity portion is formed by depositing the red island material in a deep groove, and a low-rigidity portion is formed by being deposited in a shallow groove. Next, when the pattern plate 112 reaches the static pressure chamber 111P together with the red fiber body AB, the red fiber body AB is separated from the pattern plate 112. Meanwhile, the upper layer tissue sheet UT in the form of a continuous sheet is supplied to the conveyance belt 115 from the roll WR1. A hot melt adhesive is applied to one side of the upper tissue sheet UT by an application device 301. Then, the stacked fiber body AB is pressed firmly onto one side of the upper layer tissue sheet UT on the conveyance belt 115. As a result, the first semi-finished product P1 in which the stacked fiber body AB and the upper layer tissue sheet UT are laminated is formed. The first semi-finished product P1 is sucked by the suction device 116 and conveyed by the conveyance belt 115.

Next, the lower layer tissue sheet LT in the form of a continuous sheet is supplied to the conveyance belt 115 from the roll WR2. A hot melt adhesive is applied to one side of the lower tissue sheet LT by an application device 302. One side of the lower tissue sheet LT is pressed against the first semi-finished product P1 on the conveyance belt 115. As a result, the second semi-finished product P2 is formed by laminating the lower tissue sheet LT and the first semi-finished product P1 (the laminated body AB and the upper tissue sheet UT). Next, the second semi-finished product P2 is pressed by the pressing device 120 and cut into the shape of the absorber 4 by the cutting device 130. Thereby, the third semi-finished product (P3) is formed. The third semi-finished product P3 is essentially the absorber 4 (however, it has a low-rigidity portion (LB) and a high-rigidity portion (HB), but does not have a compression portion), and the laminated body AB is the absorbent core, and the upper layer The lower layer tissue sheet (UT·LT) is the core wrap. The third semi-finished product P3 is delivered to the conveyance roll 141.

Next, the top sheet TS in the form of a continuous sheet is supplied to the conveyance belt 140 from roll WR3. A hot melt adhesive is applied to one side of the surface sheet TS by an application device 303. The third semi-finished product P3 supplied from the conveyance roll 141 is pressed against one side of the topsheet TS. As a result, the fourth semi-finished product P4 is formed, which is a laminate in which the third semi-finished product P3 (absorber 4) and the surface sheet TS are laminated. The fourth semi-finished product (P4) is supplied to the pressing device 150 through the conveyance belt 140.

Next, the fourth semi-finished product P4 is pressed against the pair of first rolls 151 and second rolls 152 of the pressing device 150, and a plurality of pressed portions 11 to 14 are formed simultaneously. In addition, the fourth semi-finished product P4 is pressed against the pair of first rolls 161 and second rolls 162 of the pressing device 160, and a plurality of pressed portions 15 are formed. As a result, the fifth semi-finished product P5 having a plurality of pressing portions 11 to 15 is formed. At this time, by controlling the tension of the surface sheet TS and the basis weight of the surface sheet TS and the hot melt adhesive, a depression ( BTA) is formed. The fifth semi-finished product P5 is delivered to the conveyance roll 170. Additionally, the pressing portions 11 to 14 may be formed using different pressing devices.

Next, the backsheet BS in the form of a continuous sheet is supplied to the conveyance roll 171 from the roll WR4. A hot melt adhesive is applied to one side of the backsheet BS using an application device 304. The back sheet BS supplied from the conveyance roll 171 is pressed against one side of the fifth semi-finished product P5 on the conveyance roll 170. As a result, the sixth semi-finished product P6, in which the fifth semi-finished product P5 and the back sheet BS are laminated, is formed. Subsequently, the peripheral portion of the sixth semi-finished product P6 is cut by the peripheral cutting device 180, and the sixth semi-finished product P6 is separated into the shape of the sanitary pad 1. Thereby, the seventh semi-finished product (P7) is formed. The seventh semi-finished product P7 is essentially a sanitary pad 1 (FIG. 1).

In the above manner, the sanitary pad 1 is manufactured.

Fig. 7 is a diagram showing another configuration example of the sanitary pad 1 according to the embodiment. Compared with the sanitary pad 1 according to the embodiment in FIG. 1, the sanitary pad 1 according to the embodiment in FIG. 7 has different shapes of the pressing portions 11 and 14. That is, the pressing portions 11 and 14 of the sanitary pad 1 in FIG. 1 all have the shape of a single heart, but the pressing portions 11 and 14 of the sanitary pad 1 in FIG. 7 all have a single heart shape. It has the shape of cotton. Even in this case, the sanitary pad 1 in FIG. 7 can exhibit the same effects as the sanitary pad 1 in FIG. 1.

Fig. 8 is a diagram showing another example of the configuration of the sanitary pad 1 according to the embodiment. Compared with the sanitary pad 1 according to the embodiment in FIG. 1, the sanitary pad 1 according to the embodiment in FIG. 8 has different shapes of the pressing portions 11 and 14. That is, the compression portions 11 and 14 of the sanitary pad 1 in FIG. 1 all have the shape of a single heart, but the compression portion 11 of the sanitary pad 1 in FIG. 8 has a single cotton (cotton) shape. ), and the pressing portion 14 has the shape of two pieces of cotton. Even in this case, the sanitary pad 1 in FIG. 8 can exhibit the same effect as the sanitary pad 1 in FIG. 1.

The absorbent article of the present invention is not limited to the above-mentioned embodiments, and the embodiments can be combined, changed, etc., within the range of not deviating from the purpose and spirit of the present invention.

1: Sanitary pad (absorbent article)
2: Surface sheet
4: Absorber
14: Compression part
A _C : Central area
A _B : Back area
P1, P2: intersection
LB5: Longitudinal low rigidity part

Claims (9)

a surface sheet having a longitudinal direction and a width direction, a longitudinal center line extending in the longitudinal direction passing through the center of the width direction, and a width direction center line extending in the width direction passing through the center of the longitudinal direction; An absorbent article comprising a backsheet and an absorbent body positioned between the topsheet and the backsheet,
The absorbent article,
In plan view, it has a central region that faces the groin area of the wearer when worn, and a rear region adjacent to the rear side of the central region in the longitudinal direction,
A pressing portion is provided in the rear area to integrate the surface sheet and the absorber,
The compression portion, in plan view,
Has an asymmetrical shape with respect to the longitudinal center line,
Comprising at least one intersection that intersects the longitudinal center line,
The absorbent article,
In plan view, the intersection portion on the side of the central region among the at least one intersection portion is provided in succession so as to span the longitudinal direction and includes a longitudinal low-rigidity portion having relatively low rigidity,
In the rear region, on both sides of the longitudinal low-rigidity portion in the width direction, a width-direction low-rigidity portion is installed in parallel with the width-direction center line so as to be spaced apart from the longitudinal low-rigidity portion, and has a relatively low rigidity. An absorbent article further comprising: According to claim 1,
The absorbent article wherein the longitudinal low rigidity portion is formed in the longitudinal direction at least in a range where the longitudinal center line and the compression portion overlap in the width direction. The method of claim 1 or 2,
An absorbent article in which the longitudinal low rigidity portion is formed as a low basis weight portion in the absorbent body with a relatively low basis weight. delete The method of claim 1 or 2,
An absorbent article in which the width direction low rigidity portion is formed from another low basis weight portion in the absorbent body whose basis weight is relatively low. The method of claim 1 or 2,
An absorbent article wherein the width direction dimension of the longitudinal low rigidity portion is larger than the width dimension of the compression portion. The method of claim 1 or 2,
An absorbent article in which the compression portion has an annular shape in plan view. According to claim 7,
An absorbent article in which the pressing portion has at least two convex portions in a portion of the annular shape that are convex toward the inside or outside of the annular shape. The method of claim 1 or 2,
An absorbent article having a depression toward the skin on a surface of the absorber on the non-skin surface side corresponding to the intersection.