AU2016395750B2

AU2016395750B2 - Absorbent pad

Info

Publication number: AU2016395750B2
Application number: AU2016395750A
Authority: AU
Inventors: Kouji Kawamura; Kazutaka Mori
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2016-03-01
Filing date: 2016-10-17
Publication date: 2021-03-11
Anticipated expiration: 2036-10-17
Also published as: AU2016395750A1; JP2017153703A; CN108697553B; JP6147882B1; WO2017149830A1; CN108697553A

Abstract

Provided is an absorbing pad that is to be attached to the inside of a diaper and that easily fits the body when worn. An absorbing pad (10) to be attached to the inside of a diaper includes a front sheet (20), a back sheet (22), an absorbing body (30), and a fastening part (90) for fastening the absorbing pad to the diaper. The absorbing body includes a peripheral area (P) and a central area (C) surrounded by the peripheral area. The central area includes a first central region (C1) and second central regions (C2) provided in front of and behind the first central region in a longitudinal direction (L). The second central regions have lower rigidity than the first central region and the peripheral area. The absorbing body includes a pair of low-basis-weight areas (42) extending in the longitudinal direction, at boundaries between the central area and the peripheral area, which adjoins the central area in the width direction (W), and a first compressed groove (40) extending in the longitudinal direction, in the central area, at the widthwise center of the absorbing body. The fastening part (90) is provided so as to avoid the area where the first compressed groove is formed in the longitudinal direction.

Description

DESCRIPTION

[Title of invention] ABSORBENT PAD

[TECHNICAL FIELD]

[0001] The present invention relates to an absorbent pad that is attached to the inside of a diaper.

[BACKGROUND ART]

[0002] A reference herein to a patent document or other matter which is given as prior art is not to be taken as an admission that that document or matter was known or that the information it contains was part of the common general knowledge as at the priority date of any of the claims.

[0003] Patent Literature 1 discloses a disposable diaper provided with an absorber that absorbs liquid. The absorber of the disposable diaper includes a central embossed region extending in the longitudinal direction and two side embossed regions spaced apart from the central embossed region on both sides of the central embossed region. The disposable diaper also includes a plurality of elastic members provided on the non-skin surface side of the absorber. Such a disposable diaper easily bends, when worn, at the region between the central embossed region and the side embossed regions. As a result, the disposable diaper is deformed into an approximately M-shape in the width direction, as illustrated in Fig. 4 of Patent Literature 1.

[CITATION LIST] [PATENT LITERATURE]

[0004] Patent Literature 1: JP 2003-180744 A

[SUMMARY OF INVENTION]

[0005] Absorbent pad attached to the inside of diapers have been developed. Such absorbent pads are preferably deformed to fit the body of a wearer to prevent liquid leakage.

[0006] Patent Literature 1 only discloses an invention relating to disposable diapers, rather than the absorbent pads attached to the inside ofdiapers, but provides a structure that facilitates deformation of the absorber of the disposable diaper into a substantially M-shape in the width direction. However, Patent Literature 1 does not consider deformation of the disposable diapers in the longitudinal direction. Further, in the disposable diaper disclosed in Patent Literature 1, the absorber shrinks in the longitudinal direction by shrinking action of the plurality of elastic members provided on the non-skin surface side of the absorber. As a result, the absorber tucks up, convexo-concave portions are easily formed on the surface of the absorber, or a gap is easily formed between the absorber and the skin of the wearer. Further, even when the wearer spreads the legs after closing the legs once, the absorber tends to be maintained in a crushed state and hardly returns to the original shape, because the shrinking action of the elastic member does not work. Thus, when the wearer spreads the legs, the disposable diaper may not fit the body of the wearer.

[0007] When the disposable diaper does not fit the body of the wearer, as described above, liquid leakage from the disposable diaper may easily occur. It is desired, therefore, to provide an absorbent pad that can easily fit the body also in the longitudinal direction at the time of wearing.

[0008] According to one form of the invention there is provided an absorbent pad attached to an inside of a diaper, comprising: a longitudinal direction; a width direction orthogonal to the longitudinal direction; a topsheet; a backsheet; an absorber provided between the topsheet and the backsheet and including an absorbent core made of an absorbent material; and a fastening portion fastened to the diaper on a non-skin surface side of the backsheet, wherein the absorber includes a peripheral region, and a center region surrounded by the peripheral region, the center region includes a first center region, and second center regions disposed in front of and behind the first center region in the longitudinal direction, the second center regions have a rigidity lower than a rigidity of the first center region and the peripheral region, the absorber includes a pair of low basis weight regions extending in the longitudinal direction at a boundary between the center region and the peripheral region adjacent to the center region in the width direction, and having a basis weight lower than a basis weight of the absorbent material of the center region and the peripheral region, and a first compressed groove provided in the center region and extending in the longitudinal direction at a center in the width direction of the absorber, and the fastening portion is provided in a region other than the region where the first compressed groove is formed in the longitudinal direction.

[0009] Where the terms "comprise", "comprises", "comprised" or "comprising" are used in this specification (including the claims) they are to be interpreted as specifying the presence of the stated features, integers, steps or components, but not precluding the presence of one or more other features, integers, steps or components, or group thereto.

[BRIEF DESCRIPTION OF DRAWINGS]

[0010] Fig. 1 is a plan view of an absorbent pad according to an embodiment. Fig. 2 is a cross-sectional view of the absorbent pad taken along the line F2-F2 in Fig. 1. Fig. 3 is a plan view of an absorber according to an embodiment. Fig. 4 is a plan view of the absorber when seen from the opposite side of Fig. 3. Fig. 5 is a schematic cross-sectional view of the absorbent pad in a width direction in a deformed state in which a weak external force is applied laterally inward. Fig. 6 is a schematic cross-sectional view of the absorbent pad in the width direction in another state in which a strong external force is applied laterally inward. Fig. 7 is a schematic cross-sectional view of the absorbent pad in a longitudinal direction in a deformed state in which the strong external force is applied laterally inward. Fig. 8 is a perspective view of an example of a diaper to which the absorbent pad is attached. Fig. 9 is a plan view illustrating the absorbent pad attached to a developed diaper.

[DESCRIPTION OF EMBODIMENTS]

[0011] According to the present specification and the accompanying drawings, at least the following matters will be disclosed.

[0012] An absorbent pad attached to the inside a diaper includes a longitudinal direction, a width direction orthogonal to the longitudinal direction, a topsheet, a backsheet, an absorber provided between the topsheet and the backsheet and including an absorbent core made of an absorbent material, a fastening portion fastened to a diaper on a non-skin surface side of the backsheet, in which the absorber includes a peripheral region, and a center region surrounded by the peripheral region, the center region includes a first center region, and second center regions disposed in front of and behind the first center region in the longitudinal direction, the second center regions have a rigidity lower than a rigidity of the first center region and the peripheral region, the absorber includes a pair of low basis weight regions extending in the longitudinal direction at a boundary between the center region and the peripheral region adjacent to the center region in the width direction, and having a basis weight lower than a basis weight of the absorbent material of the center region and the peripheral region, and a first compressed groove provided in the center region and extending in the longitudinal direction at the center in the width direction of the absorber, and the fastening portion is provided in a region other than the region where the first compressed groove is formed in the longitudinal direction.

[0013] Since the pair of low basis weight regions is relatively thin, the absorbent pad easily deforms when an external force is applied inward in the width direction W from the low basis weight regions as base points for deformation. Further, because of the difference in rigidity between the first compressed groove, which extends in the longitudinal direction at the center in the width direction, and a portion surrounding the first compressed groove, the center region of the absorbent pad easily deforms so as to protrude toward the skin of the wearer. Therefore, by the pair of low basis weight regions and the first compressed groove, the cross-section of the absorber is deformed into the W-shape in the width direction (Figs. 5 and 6). Specifically, the first compressed groove formed in the non-skin surface side protrudes toward the skin surface side, when the external force is applied inward in the width direction W With this deformation, the pair of low basis weight regions is deformed in the convex shape toward the non-skin surface side. As a result, the absorbent pad is deformed into the W-shape, as illustrated in Figs. 5 and 6. This allows the absorbent pad to fit the body more easily during wearing.

[0014] In addition, the absorbent pad includes second center regions having a lower rigidity than the rigidity of the first center region and disposed in front of and behind the first center region in the longitudinal direction. The second center regions have the lower rigidity than the rigidity of the first center region and its peripheral region. Therefore, there are two portions where the rigidity is different on the boundaries of the second center regions in the longitudinal direction. The difference in rigidity at the two portions generates two base points for bending. The boundaries of the second center regions on the first center region side are obliquely inclined from the convex portion (first center region) to have the same thickness as the peripheral region (Fig. 7). Further, the boundaries of the second center regions on the peripheral region side form the base points for bending to continue to the peripheral region, thus allowing deformation of easy fitting to the body. As a result, the absorbent pad deforms in an approximately W-shape at the center portion in the width direction and also in the longitudinal direction, and can easily fit the roundness of the body. The entire absorbent pad can easily fit the body, and therefore prevents the leakage of the liquid.

[0015] In addition, in the present embodiment, a region that easily hits the body, i.e., a first center region that easily hits the crotch region and a peripheral region that easily hits the ventral or dorsal region have a relatively high rigidity. By increasing the rigidity of the region that easily hits the body of the wearer, the absorber is hardly twisted even after long time use.

[0016] Further, the absorbent pad includes a fastening portion that is fastened to the non-skin surface side of the backsheet of the diaper. The fastening portion is preferably provided in a region other than the region where the first compressed groove is formed in the longitudinal direction L. As a result, the region where the first compressed groove is formed and the region outside the region where the first compressed groove is formed in the width direction W are not directly fastened to the diaper. Thus, the fastening portion prevents the deformation of the absorbent pad from being disturbed, and as a result, prevents the decrease of fitting of the absorbent pad to the body.

[0017] Further, the absorbent pad preferably includes no elastic member that serves to shrink the absorbent pad on the non-skin surface side of the absorber. In this way, the absorber and the absorbent pad prevent excessive shrink in the longitudinal direction, and prevent the tuck-up of the absorber, the convexo-concave portions on the surface of the absorber, and the gap between the absorber and the skin of the wearer. In addition, even when the wearer spreads the legs after closing the legs once, the absorber hardly returns to the original shape, because the shrinking action of the elastic member does not work. This makes it easier for the absorbent pad to fit the body of the wearer when the wearer spreads his legs and, as a result, the leakage of liquid can be prevented.

[0018] According to one embodiment, the first compressed groove is provided in the first center region and does not reach the boundary of the first center region in the longitudinal direction. As illustrated in Fig. 7, the region where the first compressed groove is provided is raised by the external force applied inward in the width direction. Regions from the end portion of the first compressed groove to the end portion of the first center region in the longitudinal direction have a lower rigidity than the portion of the first compressed groove, so that the region tends to be a transition region between the rising region and the decompressed region (Fig. 7). Thus, the first compressed groove does not reach the boundary of the first center region in the longitudinal direction, the end portions of the regions rising by the first compressed groove can easily be deformed to be decompressed in the longitudinal direction L.

[0019] According to the one embodiment, the low basis weight regions may be regions substantially not including the absorbent material. As a result, the difference in thickness between the low basis weight regions and the surrounding region increases, so that the low basis weight regions tend to become the base points for bending. Therefore, when the external force is applied inward in the width direction, the absorbent pad and the absorber are more easily deformed at the low basis weight regions, and the absorbent pad can more easily fit the body of the wearer (see Figs. 5 and 6).

[0020] According to the one embodiment, the fastening portion may be provided in the peripheral region. Since the fastening portion is provided in the peripheral region having a relatively high rigidity, the fastening portion can easily be compressed against the diaper. This makes it easier to fix the absorbent pad to the diaper.

[0021] According to the one embodiment, second compressed grooves formed in a lattice pattern in the absorber are provided in the peripheral region and the first center region. The second compressed grooves can increase the rigidity of both the peripheral region and the first center region higher than the rigidity of the second center region. Since the second compressed grooves are formed in the lattice pattern, the second compressed grooves serve as the base points for bending, and the absorbent pad can easily be deformed in accordance with the movement of the wearer. Thus, it is possible to provide an absorbent pad that can easily fit during operation.

[0022] According to the one embodiment, the second compressed grooves continuously extend in the direction inclined from the longitudinal direction. Base points for bending are formed in the oblique direction by the second compressed grooves in the lattice pattern continuously extending in the direction inclined from the longitudinal direction. This makes it easier for the absorbent pad to follow the body of the wearer even when the absorber is twisted by the movement of the legs of the wearer. As a result, the absorbent pad can more easily be fitted to the body of the wearer during the movement of the wearer.

[0023] According to the one embodiment, the second compressed grooves are formed only on the non-skin surface side of the absorber. As a result, the surface of the absorber on the skin surface side becomes as flat as possible, so that a comfortable absorbent pad can be provided to the wearer.

[0024] According to the one embodiment, the second compressed grooves extend in the longitudinal direction at least in a region where the fastening portion is provided. Since the fastening portion itself has a constant rigidity, there is no portion that can easily become the base point for bending in the fastening portion itself. However, the second compressed grooves formed in the region overlapping the fastening portion tend to serve as the base points for bending, so that the region where the fastening portion is provided can bend easily along the body of the wearer. Therefore, even when the rigidity of the fastening portion is relatively high, it is easy to fit the absorbent pad along the body of the wearer in the region where the fastening portion is provided.

[0025] According to the one embodiment, the second compressed grooves have grooves continuously extending in an oblique direction to cross each other, and the crossing points of the grooves are deviated from the low basis weight regions. This increases the number of edges of the grooves located at the boundaries of the low basis weight regions to about twice as high as a case where the crossing points of the grooves are located at the boundaries of the low basis weight regions. As a result, the difference in rigidity between the low basis weight region and the peripheral region or the center region is increased, and the edge of the low basis weight region tends to serve as the base point for bending.

[0026] According to the one embodiment, the fastening portion extends outward beyond the pair of low basis weight regions from the center of the absorbent pad in the width direction. When the external force is applied inward to the absorbent pad in the width direction, the absorbent pad is deformed to shrink in the width direction at the crotch portion due to the deformation of the pair of low basis weight regions and the first compressed groove. This deformation of the crotch region of the absorbent pad and the movement of the legs of the wearer may cause round-shaped deformation of the front and rear regions of the absorbent pad in the longitudinal direction. In the present embodiment, the fastening portion extends outward beyond the pair of low basis weight regions, so that the front and rear regions of the absorbent pad in the longitudinal direction can be reliably fixed to the diaper at wide regions in the width direction. This facilitates fitting of the absorbent pad to the ventral and dorsal regions of the wearer.

[0027] According to the one embodiment, in the plan view, the second center regions are formed in the convex shape in the direction away from the first center region in the longitudinal direction. As illustrated in Fig. 7, in the state in which the first center region is raised (worn state), the second center regions having lower rigidity than the first center region are curved convexly in the longitudinal direction in the plan view, so that the regions in front of and behind the second regions can easily deform to rotate about the center axis in the longitudinal direction. This facilitates fitting of the absorbent pad along the body of the wearer during wearing.

[0028] According to the one embodiment, the width of the low basis weight region in the width direction is larger than the thickness of the absorber in the peripheral region. As a result, when the absorbent pad receives a strong external force applied inward in the width direction at the time of wearing, the peripheral region of the absorber 30 enters under the absorbent core in the center region (see Fig. 6). Therefore, the absorber in the center region can deform to fit the body, as the entire width of the absorbent pad decreases. Since the width of the low basis weight region is larger than the thickness of the absorber in the peripheral region, even if the absorbent pad deforms in this way, the thickness of the entire absorbent pad does not increase excessively. As a result, the discomfort felt by the wearer can be reduced.

[0029] From the viewpoint of facilitating intrusion of the peripheral region of the absorber under the absorbent core in the center region when the absorbent pad receives the strong external force applied inward in the width direction W, the width of the low basis weight regions in the width direction W is preferably larger than the sum of the thickness of the absorber in the peripheral region and the thickness of the absorber in the center region.

[0030] According to the one embodiment, in the outside of the low basis weight regions in the longitudinal direction, the boundary between the peripheral region and the center region is inclined linearly inward in the width direction outward in the longitudinal direction. Thus, the boundary of the peripheral region can easily become the base point for bending when the boundary of the peripheral region is linear rather than curved, so that the center region of the absorbent pad can easily fit to the body of the wearer. Since the absorbent pad is bent neatly at the boundary of the peripheral region, the discomfort felt by the wearer can be reduced.

[0031] According to the one embodiment, the width of the absorbent pad in the width direction is larger than the minimum width of the absorber in the width direction W disposed in the crotch region of the diaper. As a result, when the absorbent pad is attached to the diaper, both end portions on the outside in the width direction W of the absorbent pad protrude outward in the width direction W of the absorber of the diaper in the crotch region. The inward force received laterally in the width direction W from the legs of the wearer by being sandwiched between the legs of the wearer is transmitted to the absorbent pad earlier than the absorber disposed in the crotch region of the diaper. This facilitates deformation of the absorbent pad to allow the absorbent pad to fit the body, so that the wearer hardly has discomfort feeling even in wearing the absorbent pad over the diaper.

[0032] Further, the absorbent pad is present widely beyond the absorber of the diaper in the crotch region, thus preventing the leakage of the liquid to the diaper 1. This is advantageous in that only the absorbent pad is replaced repeatedly without changing the diaper.

[0033] According to the one embodiment, the absorbent pad has a side sheet covering an outer portion of the topsheet in the width direction, and a stretchable elastic member attached to the side sheet, in which the elastic member has a stretch ratio of the elastic members in a range of 2.0 to 2.5 times. By the shrinking action of the elastic member, the side sheet is raised, and the lateral leakage of the liquid can be supcompressed. In addition, the stretch ratio of the elastic member is 2.0 to 2.5 times, which is relatively low, so that the amount of shrinking of the entire absorber and the absorbent pad in the longitudinal direction can be decreased. In this way, the entire absorber and the entire absorbent pad prevent excessive shrink in the longitudinal direction, and prevent the tuck-up of the absorber, the convexo-concave portions on the surface of the absorber, and the gap between the absorber and the skin of the wearer.

[0034] Hereinafter, an absorbent pad according to an embodiment will be described in detail by referring to the accompanying drawings. The absorbent pad of the present invention relates to an absorbent pad attached to the inside of a disposable diaper. The disposable diaper may be an adult diaper.

[0035] In the drawings, the same or similar parts are indicated by the same or similar reference symbols. The drawings are illustrated schematically, and dimensional ratios and other variables differ from those of actual measurements. The actual measurements or the like, therefore, should be determined by referring to the following description. The drawings may include different relationships or ratios of measurements.

[0036] (1) Structure of Absorbent Pad Fig. 1 is a plan view of an absorbent pad according to an embodiment. Fig. 1 illustrates an absorbent pad in a stretched state. Fig. 2 is a cross-sectional view of the absorbent pad taken along the line F2-F2 in Fig. 1. Fig. 3 is a plan view of an absorber in the absorbent pad when seen from the skin surface side facing the skin of the wearer. Fig. 4 is a plan view of the absorber when seen from the opposite side of Fig. 3.

[0037] The absorbent pad 10 has a longitudinal direction L and a width direction W. The longitudinal direction L extends from the front side (ventral side) toward the rear side (dorsal side) of the wearer, or from the rear side toward the front side of the wearer. The width direction W is a direction orthogonal to the longitudinal direction L. Hereinafter, the side facing the skin of the wearer during use may be referred to as the "skin surface side". In addition, the side opposite to the skin of the wearer during use may be referred to as the "non-skin surface side".

[0038] The absorbent pad 10 has a topsheet 20, a backsheet 22 and an absorber 30. The topsheet 20 faces the skin of the wearer when the absorbent pad 10 is worn. The topsheet 20 covers the absorber 30. The topsheet 20 may be formed of a liquid permeable sheet.

[0039] When the absorbent pad 10 is worn, the backsheet 22 is directed to the side opposite to the skin of the wearer and faces the disposable diaper. The backsheet 22 may be formed of a liquid impermeable sheet.

[0040] The absorbent pad 10 may include a side sheet 50 and an elastic member 52. The side sheet 50 extends from the non-skin surface side of the backsheet 22 to the topsheet 20 side through the outer edge of the absorbent pad 10 in the width direction W. The side sheet 50 in the width direction W is folded at the inner side portion on the topsheet 20 side. Thus, the side sheet 50 encloses the elastic member 52. The elastic member 52 is attached to the side sheet 50 as being stretched in the longitudinal direction L. The elastic member 52 shrinks when no external force is applied to form upright gathers on the topsheet 20 side of the side sheet 50. The upright gathers can prevent lateral leakage of liquid.

[0041] At least one elastic member 52 is provided on each side in the width direction W across the center. As illustrated in Fig. 2, the elastic member 52 is preferably provided one for each side in the width direction W across the center. This prevents shrinking force of the elastic member 52 from becoming too strong.

[0042] A stretch ratio of the elastic member 52 is preferably in the range of 2.0 times to 2.5 times. Because of the relatively low stretch ratio of the elastic member 52, the entire shrinking amount of the entire absorber 30 and the absorbent pad 10 in the longitudinal direction L. Accordingly, the entire absorber 30 and the entire absorbent pad 10 prevent excessive shrink in the longitudinal direction L, and prevent the tuck-up of the absorber 30, the convexo-concave portions on the surface of the absorber 30, and the gap between the absorber 30 and the skin of the wearer.

[0043] In the present specification, the "stretch ratio" of the elastic member is defined as follows: stretch ratio = (length of elastic member in stretched state)/(length of elastic member in natural state)

[0044] In the present specification, the stretch ratio is measured, for example, by the following procedure. First, a region of the absorbent pad 10 where the upright gathers are disposed is cut out. The stretch ratio of a sample of the cut-out upright gathers is measured to determine the stretch ratio of the elastic member 52.

[0045] Each cut-out sample is left in the atmosphere of 20°C 20 C and relative humidity 60% % RH for 60 minutes, and then the length of the sample is measured in the shrinking direction. This length is referred to as the "length of the leg stretchable portion in the natural state".

[0046] Secondly, the length of a desired region in such state (i.e., natural state) is measured in the shrinking direction, and the length of the desired region when no wrinkles generated by the elastic member are visually recognizable on the side sheet is also measured in the shrinking direction. This length is referred to as the "length of the elastic member in the stretched".

[0047] Using these measurement results, the stretch ratio is measured by calculating the above equation.

[0048] As illustrated in Fig. 2, the absorbent pad 10 preferably include no elastic member that serves to shrink the absorbent pad 10 on the non-skin surface side of the absorber 30. This prevents the absorber 30 and the absorbent pad 10 from being excessively shrunken in the longitudinal direction L, while the tuck-up of the absorber 30, the convexo-concave portions on the surface of the absorber 30, and the gap between the absorber 30 and the skin of the wearer can be prevented. In addition, even when the wearer spreads the legs after closing the legs once, the absorber 30 hardly returns to the original shape, because the shrinking action of the elastic member 52 does not work. This makes it easier for the absorbent pad 10 to fit the body of the wearer when the wearer spreads the legs, thus preventing the leakage of the liquid.

[0049] The absorber 30 is provided between the topsheet 20 and the backsheet 22. The absorber 30 includes an absorbent core 32 made of an absorbent material. The absorbent material forming the absorbent core 32 is, for example, hydrophilic fibers, pulp, or high absorbent polymers (SAP). The absorber 30 has a core wrap 34 that encloses the absorbent core 32. The core wrap 34 may be made of, for example, a nonwoven fabric or a tissue sheet.

[0050] The absorbent core 32 preferably has a single layer structure. In other words, in the stretched state and the natural state of the absorbent pad 10, the absorbent cores 32 are disposed in individual regions without overlapping each other in the thickness direction. This decreases the thickness of the absorber 30. In particular, the absorbent pad 10 is preferably as thin as possible from the viewpoint of comfort in wearing, because the absorbent pad 10 is attached to the diaper when the diaper is used. Further, if the absorbent core 32 includes a plurality of absorbent layers, a gap may be generated between the absorbent layers when the absorber 30 deforms by receiving the external force in the width direction W. Therefore, the absorbent core 32 is preferably a single layer also from the viewpoint of stably maintaining the shape of the absorber.

[0051] The absorber 30 includes a center region C and a peripheral region P. The center region C is a region including the center of the absorber 30 and not including the edge of the absorber 30. When the absorbent pad is worn, the center region C is located in the crotch of the wearer. The peripheral region P is a region surrounding the center region C and includes the edge of the absorber 30.

[0052] The center region C includes a first center region C1 and a second center regions C2 disposed in front of and behind the first center region C1 in the longitudinal direction L. The second center regions C2 have a lower rigidity than the first center region C1 and the peripheral region P.

[0053] In the present specification, the rigidity value is defined as a value obtained by dividing a value measured in Gurley bending stiffness by the length of the sample piece. To measure the Gurley bending stiffness, No. 311 Gurley flexing tester (manufactured by YASUDA SEIKI SEISAKUSHO, LTD.) is used. This tester follows JIS-L1096. This tester is a testing machine for measuring a flexing degree (bending resilience) of a sample piece. First, the sample piece is mounted on the chuck of the movable arm and rotated to the right and left at a specified speed to read the scale when the lower end of the sample piece is away from the pendulum. Accordingly, the bending resistance S (mN) is calculated by the formula: S = R x (DiWi + D2W2 + D3W3) x (L - 12.7) 2/b x 3.375 x 10-5

[0054] where R is the reading of the scale plate, D1, D2, and D3 are distances (25.4 mm (1 in.), 50.8 mm (2 in.), and 101.6 mm (4 in.)) from the pendulum support point to the weight attachment position, W1, W2, and W3 are masses (g) of the weight attached to the hole D1, D2, and D3, L is the length (mm) of the sample piece, and b is the width (mm) of the sample piece.

[0055] In the present specification, the sample piece used is a piece of the absorber of the absorbent pad 10 cut into a rectangular parallelepiped which is 38 mm lengthwise and 17.5 mm widthwise. In this case, the length L of the sample piece is 38 mm and the width b of the sample piece is 17.5 mm. Thus, the Gurley bending stiffness (mN) per 38 mm length of the sample piece is measured. Although the longitudinal direction of the sample piece may be, for example, the longitudinal direction of the absorbent pad 10 (a conveying direction during manufacture (MD direction)), the longitudinal direction is not limited thereto.

[0056] In order to increase the rigidity of the absorber 30 in the peripheral region P, the second compressed grooves 46 are preferably formed in the absorber 30 in the peripheral region P. The second compressed grooves 46 may be provided entirely in the peripheral region P. In the present embodiment, the second compressed grooves 46 are formed in the lattice pattern on the non-skin surface side of the absorber 30. More specifically, the second compressed grooves 46 may be linearly formed along the first direction and the second direction crossing the first direction. The first direction and the second direction are inclined with respect to the longitudinal direction L.

[0057] The second compressed grooves 46 can increase the rigidity of the peripheral region P and the first center region C1 to be higher than the rigidity of the second center regions C2. Since the second compressed grooves 46 are formed in the lattice pattern, the second compressed grooves 46 serve as the base points for bending, so that the absorbent pad can easily be deformed in accordance with the motion of the wearer. Thus, it is possible to provide an absorbent pad that can easily fit during operation.

[0058] The second compressed grooves 46 preferably extend continuously in a direction inclined from the longitudinal direction L. Base points for bending are formed in the oblique direction by the second compressed grooves 46 in the lattice pattern continuously extending in the direction inclined from the longitudinal direction L. This makes it easier for the absorbent pad to follow the body of the wearer even when the absorber is twisted by the movement of the legs of the wearer. As a result, the absorbent pad can more easily be fitted to the body of the wearer during the movement of the wearer.

[0059] The second compressed grooves 46 are provided on the non-skin surface side of the absorber 30. Accordingly, the surface on the skin surface side of the absorber 30 becomes as flat as possible, thus offering a comfortable absorbent pad to the wearer. Further, in order to provide a more comfortable absorbent pad, the compressed grooves are preferably not formed on the skin surface side of the absorber 30.

[0060] It is preferable that the second compressed grooves 46 extends along the longitudinal direction L at least in a region where the fastening portion 90 described below is provided. Since the fastening portion 90 itself has a constant rigidity, there is no portion that is likely to become the base point for bending in the fastening portion 90 itself. However, the second compressed grooves 46 formed in the region overlapping the fastening portion 90 tend to serve the base points for bending, so that the region where the fastening portion 90 is provided can bend easily along the body of the wearer. Therefore, even when the rigidity of the fastening portion 90 is relatively high, it is easy to fit the absorbent pad along the body of the wearer in the region where the fastening portion 90 is provided.

[0061] The second compressed grooves 46 has a plurality of grooves continuously extending in an oblique direction intersecting with each other, and the intersection points of these grooves may be disposed deviated from the low basis weight region 42. This increases the number of edges of the grooves located at the boundaries of the low basis weight regions 42 to about twice as high as a case (as illustrated in Fig. 4) where the crossing points of the grooves are located at the boundaries of the low basis weight regions 42. As a result, the difference in rigidity between the low basis weight region 42 and the peripheral region P or the center region C increases, and the edge of the low basis weight regions P more easily become the base points for bending.

[0062] In the outside in the longitudinal direction L of the low basis weight regions 42 which is described later, the boundary between the peripheral region P and the center region C is preferably inclined linearly inward in the width direction W outward in the longitudinal direction L. The boundary between the peripheral region P and the center region C is defined by the second compressed grooves 46. It is easier for the boundary 44b of the peripheral region P to become the base point for bending when the boundary of the peripheral region P is linear rather than curved, and the center region C of the absorbent pad 10 can deform to fit the body of the wearer. Since the absorbent pad 10 is bent neatly at the boundary 44b of the peripheral region P, the discomfort felt by the wearer can be alleviated.

[0063] The absorber 30 includes the first compressed groove 40 and the pair of low basis weight regions 42. The first compressed groove 40 is formed on the non-skin surface side of the absorber 30 in the center region C. The first compressed groove 40 extends in the longitudinal direction L at the center in the width direction W. The length of the first compressed groove 40 in the longitudinal direction L may be shorter than the length of the pair of low basis weight regions 42 in the longitudinal direction L.

[0064] The pair of low basis weight regions 42 extends along the longitudinal direction L. The pair of low basis weight regions 42 is provided at the boundary between the center region C and the peripheral region P adjacent to the center region C in the width direction W.

[0065] The low basis weight regions 42 are defined by regions in the center region C and the peripheral region P including the absorbent core having a basis weight lower than the basis weight of the absorbent core 32, or by regions substantially not including the absorbent core. The low basis weight regions 42 may be regions including the absorbent core having a basis weight of 0 to 200 g/m 2 . The low basis weight regions 42 are regions including the absorbent core having a basis weight of preferably 150 g/m 2 or less, and more preferably 100 g/m 2 or less.

[0066] The low basis weight regions 42 serve as the boundary where the rigidity of the absorbent pad 10 changes. Therefore, the low basis weight regions 42 correspond to regions where the absorbent pad 10 can be deformed easily.

[0067] Alternatively, the low basis weight regions 42 may be regions substantially not including the absorbent material. That is, the low basis weight regions 42 conceptually include regions where the absorbent core 32 has zero basis weight. The regions substantially not including the absorbent core represent design regions not including the absorbent material for forming the absorbent core 32. In other words, the regions substantially not including the absorbent core may be defined to conceptually include regions to which a very small amount of absorbent material is mixed during manufacturing, so that the regions may include 5% or less basis weight absorbent material compared to the second center regions C2 located adjacent to the low basis weight regions 42.

[0068] In a case where the low basis weight regions 42 are the regions substantially not including the absorbent material, the difference in thickness between the low basis weight regions 42 and the surrounding region become large, so that the low basis weight regions 42 tend to become the base points for bending. Therefore, when the external force is applied inward in the width direction W, both the absorbent pad 10 and the absorber 30 easily deform at the low basis weight regions 42, as will be described later (see Figs. 5 and 6). Therefore, the absorbent pad 10 can more easily fit the body of the wearer. Since creasing is easily formed if the low basis weight regions 42 are the regions not substantially including the absorbent material, the once bent shape can be kept easily, facilitating the deformation as illustrated in Figs. 5 and 6.

[0069] In addition, in the case where the low basis weight regions 42 are the regions not substantially including the absorbent material, the skin surface side portion of the core wrap 34 that encloses the absorbent core 32 is preferably bonded to the non-skin surface side portion of the core wrap 34 enclosing the absorbent core 32 in the low basis weight regions 42. This allows the core wrap 34 to firmly enclose the absorbent core 32 (absorbent material), so that the deformation (twisting) of the absorber can be reliably prevented.

[0070] Each width W1 of the low basis weight regions 42 in the width direction W is preferably larger than the thickness T2 of the absorber 30 in the peripheral region P. The width of the low basis weight region 42 in the width direction W is preferably 10 to 25 mm, more preferably 15 mm.

[0071] The distance W2 between the pair of low basis weight regions 42 is preferably shorter than the sum (W3 + W3) of the width of the peripheral regions P in the width direction W at the center position in the longitudinal direction L. As a result, when a weak external force is applied to the absorbent pad 10 applied from the outside in the width direction W at the time of wearing, the absorbent pad 10 is deformed to have an approximately W-shaped cross-section in the width direction W, as illustrated in Fig. 5 When the absorbent pad 10 is deformed into the approximately W-shape, the height of the peripheral region P becomes sufficiently high to more reliably prevent the leakage of liquid from the outside of the absorbent pad 10 in the width direction W. The distance between the pair of low basis weight regions 42 may be, for example, 45 to 65 mm.

[0072] The "length", "width" and "distance" described in the present specification are numerical values measured in a state where the absorbent pad 10 is stretched until the wrinkles disappear.

[0073] The absorbent core 32 preferably extends to edges of the absorbent pad 10 in the width direction W within the range of the longitudinal direction L in which the low basis weight region 42 is provided. The region where the absorbent core 32 is present is a region having the relatively high rigidity in the absorbent pad 10. Specifically, the region having the relatively high rigidity extends to the edges of the absorbent pad 10 in the width direction W. Accordingly, when a force directed inward in the width direction is applied from the edges of the absorbent pad 10 in the width direction W, the force is efficiently transmitted to the pair of the low basis weight region 42 and the center region C. As a result, the absorbent pad 10 can easily deform to fit the body of the wearer during use, which will be described later.

[0074] In the present embodiment, the absorbent core 32 has a linear outline along the longitudinal direction L within the range of the longitudinal direction L where at least the low basis weight regions 42 are provided.

[0075] The absorbent pad 10 may have a fastening portion 90 that is fastened to the diaper on the non-skin surface side of the backsheet 22. In Fig. 1, the fastening portion 90 is illustrated virtually by a dotted line. The fastening portion 90 is preferably provided in a region other than the region where the first compressed groove 40 is formed in the longitudinal direction L. As a result, the region where the first compressed groove 40 is formed and the region outside the region where the first compressed groove 40 is formed in the width direction W are not directly fastened to the diaper. Thus, the fastening portion 90 prevents disturbing the deformation of the region of the first compressed groove 40, which is the relatively easily deformed region, and as a result, prevents decrease of fitting of the absorbent pad 10 to the body.

[0076] The fastening portion 90 may be provided in the peripheral region P. Since the fastening portion 90 is provided in the peripheral region P having a relatively high rigidity, the fastening portion 90 can easily be compressed against the diaper. This makes it easier to fix the absorbent pad to the diaper.

[0077] The fastening portion 90 extends outward beyond the pair of low basis weight regions 42 from the center of the absorbent pad 10 in the width direction W. When the external force is applied inward to the absorbent pad in the width direction W, the absorbent pad is deformed to shrink in the width direction W at the crotch portion due to the deformation of the pair of low basis weight regions 42 and the first compressed groove 40. The deformation of the crotch region of the absorbent pad and the movement of the legs of the wearer may cause round-shaped deformation of the front and rear regions of the absorbent pad in the longitudinal direction. In the present embodiment, the fastening portion 90 extends outward beyond the pair of low basis weight regions 42, so that the front and rear regions of the absorbent pad in the longitudinal direction L can be reliably fixed to the diaper at wide regions in the width direction. This facilitates fitting of the absorbent pad to the ventral and dorsal regions of the wearer.

[0078] As illustrated in Fig. 2, the topsheet 20 and the absorber 30 extend to the outer end portion of the absorbent pad 10 in the width direction W in the central portion of the absorbent pad 10, for example, in the range where at least the center region C exists in the longitudinal direction L. Accordingly, if the thickness of the absorber 30 is reduced, the liquid, such as urine, can be absorbed even when the liquid has been diffused to the outer end portion of the absorbent pad 10 in the width direction W, so that the liquid does not easily leak from the absorbent pad 10. Since the topsheet 20 and the absorber extend to the outer end portion in the width direction W, the relatively high rigidity is maintained over the outer end portion in the width direction W of the absorbent pad 10. Thus, the transmission of the force received from the side of the absorbent pad 10 can easily be transmitted to the center region C.

[0079] (2) Absorbent Pad During Wearing Next, an exemplary shape of the absorbent pad 10 during wearing is described by referring to Figs. 5 to 7. Fig. 5 illustrates deformation of the absorbent pad when the absorbent pad receives a weak external force applied inward in the width direction W. Fig. 6 illustrates deformation of the absorbent pad when the absorbent pad receives a strong external force applied inward in the width direction W. Figs. 5 and 6 illustrate the cross-sectional views of the absorbent pad in the width direction. Fig. 7 illustrates a cross-sectional view in the longitudinal direction of the absorbent pad. For simplification of the drawing, the second compressed grooves 46 are not illustrated in

Fig. 7.

[0080] During use, the absorbent pad 10 is sandwiched between the legs of the wearer and receives an external force applied inward in the width direction W. When the absorbent pad 10 receives the weak force in the width direction W, the outer portion of the peripheral region P in the width direction W is raised upward, while the peripheral region P tends to move toward the center region C (see Fig. 5). The first center region C1 is pushed by the peripheral region P and deformed in the convex shape toward the skin of the wearer. At this time, the absorber 30 tends to be deformed in the convex shape toward the skin of the wearer, because the first compressed groove 40 is formed on the non-skin surface side of the first center region C.

[0081] Since the pair of low basis weight regions 42 is relatively thin, the absorbent pad 10 can easily deform from the low basis weight regions 42 as being the base points for bending upon receipt of the external force applied inward in the width direction W. Therefore, the cross-section of the absorber is deformed to the W-shape in the width direction (Figs. and 6) by the pair of low basis weight regions 42 and the first compressed groove 40. Specifically, the first compressed groove 40 formed on the non-skin surface side protrudes toward the skin surface side upon receipt of the external force applied inward in the width direction W. With such deformation, the pair of low basis weight regions 42 is deformed in the convex shape toward the non-skin surface side. As a result, the absorbent pad is deformed into the W-shape, as illustrated in Figs. 5 and 6. This allows the absorbent pad to fit the body more easily during wearing.

[0082] Meanwhile, the absorbent pad includes the second center regions C2 having a lower rigidity than the rigidity of the first center region C1 and disposed in front of and behind the first center region in the longitudinal direction. The second center regions C2 have the lower rigidity compared to the first center region C1 and the peripheral region P. Therefore, there are two portions where the rigidity is different on the boundaries of the second center regions C2 in the longitudinal direction. The difference in rigidity at the two portions generates two base points for bending. The boundaries of the second center regions C2 on the first center region C1 side are obliquely inclined from the convex portion (first center region C1) to have the same thickness as the peripheral region P (Fig. 7). Further, the boundaries of the second center regions C2 on the peripheral region P side form the base points for bending to continue to the peripheral region P, thus allowing deformation easily fitting the body.

As a result, the absorbent pad deforms in an approximately W-shape at the center portion in the width direction and also in the longitudinal direction, and can easily fit the roundness of the body. The entire absorbent pad can easily fit the body, and therefore prevents the leakage of the liquid.

[0083] The first compressed groove 40 is provided in the first center region C1 and, preferably, does not reach the boundary of the first center region C1 in the longitudinal direction L. As described above, as illustrated in Fig. 7, the region where the first compressed groove is provided is raised by the external force applied inward in the width direction W. Regions Cla from the end portion of the first compressed groove 40 to the end portion of the first center region C1 in the longitudinal direction L have a lower rigidity than the portion of the first compressed groove 40, so that the region Cla tends to be a transition region from the rising region to the decompressed region (Fig. 7). Thus, the first compressed groove 40 does not reach the boundary of the first center region C1 in the longitudinal direction L, the end portions of the regions rising by the first compressed groove 40 can easily be deformed to be decompressed in the longitudinal direction L.

[0084] When the absorbent pad 10 receives the strong external force applied inward in the width direction W at the time of wearing, the peripheral region P of the absorber 30 has a relatively high rigidity, so that the peripheral region P can easily intrude under the absorbent core 32 of the center region C, while maintain the shape of the peripheral region P (see Fig. 6). Therefore, the absorber 30 in the center region C can deform to fit the body, as the entire width of the absorbent pad 10 decreases. It is advantageous in that, if the absorbent pad 10 is deformed in this way, the thickness of the entire absorbent pad 10 does not increase excessively, because the width W1 of the low basis weight regions 42 is larger than the thickness T2 of the absorber 30 in the peripheral region P.

[0085] From the viewpoint of facilitating intrusion of the peripheral region P of the absorber 30 under the absorbent core 32 in the center region C when the absorbent pad 10 receives the strong external force applied inward in the width direction W, the width W1 of the low basis weight regions 42 in the width direction W is preferably larger than the sum of the thickness T2 of the absorber 30 in the peripheral region P and the thickness T1 of the absorber 30 in the center region C.

[0086] Further, in the plan view, the second center regions C1 are preferably formed in the convex shape in the direction away from the first center region C1 in the longitudinal direction L (see Fig. 4). As illustrated in Fig. 7, in the state in which the first center region C1 is raised (worn state), the second center regions C2 having lower rigidity than the first center region C1 are curved convexly in the longitudinal direction in plan view, so that the regions in front of and behind the second regions can easily deform to rotate about the center axis in the longitudinal direction. This facilitates fitting of the absorbent pad along the body of the wearer during wearing.

[0087] (3) Disposable Diaper With Absorbent Pad Attached Thereon Fig. 8 is a perspective view of an example of a diaper to which the absorbent pad is attached. Fig. 9 is a plan view illustrating the absorbent pad attached to the developed diaper. Fig. 9 illustrates the absorbent pad and the diaper in the stretched state. The disposable diaper may be, for example, a diaper for adults.

[0088] A disposable diaper 1 may have a pants-type structure as an example. The disposable diaper 1 has a waistline region applied to the waistline of the wearer and a crotch region applied to the crotch of the wearer. Waist edge portions 4 and 4' located outside the front waistline region in the width direction W are bonded to rear waist edge portions 6 and 6' located outside the rear waistline region S2 in the lateral direction W, respectively, to form the disposable diaper 1 into a pants shape. The disposable diaper 1 includes, when formed in the pants shape, a pair of leg openings 9 surrounding the legs of the wearer. The crotch region is a region between the pair of leg openings 9.

[0089] The disposable diaper 1 includes an absorbent main body 1A. The absorbent main body 1A may include a topsheet, a backsheet, and an absorber 130 between the topsheet and the backsheet. The absorber 130 is provided at least in the crotch region. The absorber 130 is made of mixed powder, such as crushed pulp or superabsorbent polymer.

[0090] The above-described absorbent pad 10 is attached to the crotch region of the disposable diaper 1. After excretion by the wearer, only the absorbent pad 10 can be replaced. Thus, the disposable diaper can be used longer.

[0091] A width W4 of the absorbent pad 10 in the width direction W is preferably larger than the minimum width W5 in the width direction W of the absorber 130 disposed in the crotch region of the diaper. Thus, when the absorbent pad 10 is attached to the diaper, both outer end portions of the absorbent pad 10 in the width direction W protrude outside in the width direction W in the absorber 130 of the diaper in the crotch region. The inward force received laterally in the width direction W from the legs of the wearer by being sandwiched between the legs of the wearer is transmitted to the absorbent pad earlier than the absorber 130 disposed in the crotch region of the diaper. This facilitates deformation of the absorbent pad 10 to allow the absorbent pad 10 to fit the body, so that the wearer hardly has discomfort feeling even in wearing the absorbent pad 10 over the diaper.

[0092] Further, the absorbent pad 10 is present in a region wider than the absorber 130 of the diaper 1 in the crotch region, thus preventing the leakage of the liquid to the diaper 1. This is advantageous in that only the absorbent pad 10 is replaced repeatedly without changing the diaper.

[0093] Compressed portions 132 may be formed in the absorber 130 of the disposable diaper 1. The compressed portions 132 extend in the longitudinal direction L. The compressed portions 132 tend to serve as base points for deformation of the disposable diaper 1 when the external force is applied inward in the width direction to the disposable diaper 1.

[0094] Preferably, the compressed portions 132 at least partially overlap the low basis weight regions 42 of the absorbent pad 10. That is, the base points for bending of the absorbent pad 10 in the low basis weight regions 42 are located approximately at the same positions as the base points for bending of the compressed portions 132 of the disposable diaper 1. This is advantageous, therefore, in that when the external force is applied inward in the width direction, both the diaper 1 and the absorbent pad 10 easily deform at the low basis weight regions 42, as illustrated in Figs. 5 and 6.

[0095] Although the embodiment of the present invention has been described above in detail, it is apparent for persons who have ordinary skill in the art that the embodiment described in this specification do not limit the scope of the present invention. Changes and modifications may apply to the embodiment of the present invention without departing from the spirit and scope of the present invention that are defined by the description of the appended claims. The description of the present specification, therefore, has been understood to be illustrative and is in no way intended to limit the scope of the invention.

[0096] The entire contents of JP 2016-39463 A (filed on March 1, 2016) have been incorporated herein by reference.

[INDUSTRIAL APPLICABILITY]

[0097] According to the above embodiment, the absorbent pad that can easily fit the body during wearing can be provided.

[REFERENCE SIGNS LIST]

[0098] Absorbent pad Topsheet 22 Backsheet Absorber 32 Absorbent core First compressed groove 42 Low basis weight region 46 Second compressed groove Fastening portion C Center region C1 First center region C2 Second center region P Peripheral region L Longitudinal direction W Lateral direction

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

[Claim 1] An absorbent pad attached to an inside of a diaper, comprising: a longitudinal direction; a width direction orthogonal to the longitudinal direction; a topsheet; a backsheet; an absorber provided between the topsheet and the backsheet and including an absorbent core made of an absorbent material; and a fastening portion fastened to the diaper on a non-skin surface side of the backsheet, wherein the absorber includes a peripheral region, and a center region surrounded by the peripheral region, the center region includes a first center region, and second center regions disposed in front of and behind the first center region in the longitudinal direction, the second center regions have a rigidity lower than a rigidity of the first center region and the peripheral region, the absorber includes a pair of low basis weight regions extending in the longitudinal direction at a boundary between the center region and the peripheral region adjacent to the center region in the width direction, and having a basis weight lower than a basis weight of the absorbent material of the center region and the peripheral region, and a first compressed groove provided in the center region and extending in the longitudinal direction at a center in the width direction of the absorber, and the fastening portion is provided in a region other than the region where the first compressed groove is formed in the longitudinal direction.
[Claim 2] The absorbent pad according to claim 1, wherein the first compressed groove is provided in the first center region and does not reach the boundary of the first center region in the longitudinal direction.
[Claim 3] The absorbent pad according to claim 1 or 2, wherein the low basis weight regionisaregion substantially not including the absorbent material.
[Claim 4] The absorbent pad according to any one of claims 1 to 3, wherein the fastening portion is provided in the peripheral region.
[Claim 5] The absorbent pad according to any one of claims 1 to 4, further comprising: second compressed grooves formed in a lattice shape in the absorber in the peripheral region and the first center region.
[Claim 6] The absorbent pad according to claim 5, wherein the second compressed grooves continuously extend in a direction inclined from the longitudinal direction.
[Claim 7] The absorbent pad according to claim 5 or 6, wherein the second compressed grooves are provided on the non-skin surface side of the absorber.
[Claim 8] The absorbent pad according to any one of claims 5 to 7, wherein the second compressed grooves extend in the longitudinal direction at least in a region where the fastening portion is provided.
[Claim 9] The absorbent pad according to any one of claims 5 to 8, wherein the second compressed grooves have grooves continuously extending in an oblique direction to cross each other, and a crossing point of the grooves is deviated from the low basis weight region.
[Claim 10] The absorbent pad according to any one of claims 1 to 9, wherein the fastening portion extends outward beyond the pair of low basis weight regions in the width direction from a center of the absorbent pad.
[Claim 11] The absorbent pad according to any one of claims 1 to 10, wherein the second center regions are formed in a convex shape in a direction away from the first center region in the longitudinal direction in a plan view.
[Claim 12] The absorbent pad according to any one of claims 1 to 11, wherein the low basis weight regions have a width in the width direction larger than a thickness of the absorber in the peripheral region.
[Claim 13] The absorbent pad according to any one of claims 1 to 12, wherein the boundary between the peripheral region and the center region is linearly inclined inward in the width direction toward an outside in the longitudinal direction on an outside of the low basis weight regions in the longitudinal direction.
[Claim 14] The absorbent pad according to any one of claims 1 to 13, wherein the absorbent pad has a width in the width direction larger than a minimum width of the absorber in the width direction disposed in a crotch region of the diaper.
[Claim 15] The absorbent pad according to any one of claims 1 to 14, further comprising: a side sheet covering an outer portion of the topsheet in the width direction; and a stretchable elastic member attached to the side sheet, wherein the elastic member has a stretch ratio in a rage of 2.0 to 2.5 times.

UC-1099-PCTT

1/9

FIG. 1 7A 10

W4

30

90

42 F2 F2

W3 W2 W3

42

50

90

L

W 7A

UC-1099-PCTT

FIG. 2

52 20 42 42 50 T1 T2 2/9

32 40 47 46 30 34 46 22 P C W1

UC-1099-PCTT

3/9

FIG. 3

30

42 42

32

L

W

UC-1099-PCTT

4/9

FIG. 4

30

46

44b 44b C1a

42 42 C1 C 40 C2

32 47 C1a

P

L

W

UC-1099-PCTT

FIG. 5

20 30 5/9

40

22 C P

UC-1099-PCTT

FIG. 6

20 30 6/9

22

C P

UC-1099-PCTT

L FIG. 7

20

90 C1a C1a 90 40 7/9

22

30

P C2 C1 C2 P

UC-1099-PCTT

8/9

FIG. 8 1

UC-1099-PCTT

9/9

FIG. 9

130 1A

6 6'

132

9 10

L 132 132

4 4'

W5 W4 W