Absorbent pads

Abstract

To provide an absorbent pad capable of being used on an inside of a diaper, capable of enhancing water capacity and reducing discomfort in wearing.SOLUTION: An absorbent pad (1) is arranged on an inside of a diaper (30) having a pair of three-dimensional gathering parts (31), in which there is provided a plurality of compressed parts (40) which is obtained by compressing an absorbent core (10) in a thickness direction so that a maximum length of the absorbent core (10) in a longitudinal direction is 400 mm or greater and 470 mm or smaller, a maximum water capacity per unit area of the absorbent pad (1) is 3200×10-6 ml / mm2 or greater, and a maximum thickness from a skin face of a skin side sheet (2) to a non-skin face of a non-skin face side sheet (3) is 2 mm or greater and 4 mm or smaller.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an absorbent pad. [Background technology]

[0002] Patent Document 1 discloses a pad-type absorbent article that includes an outer sheet, an inner sheet, and an absorbent body (absorbent core) sandwiched between them, and is used in combination with an outer layer such as a disposable diaper. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-217329 A Summary of the Invention [Problem to be solved by the invention]

[0004] In order to make it possible to use an absorbent pad for a long period of time, it is necessary to increase the water retention capacity of the absorbent pad. However, simply increasing the planar size of the absorbent pad to increase the water retention capacity of the absorbent pad makes it difficult to use the absorbent pad inside an outer layer. Furthermore, increasing the basis weight (mass per unit area) of the absorbent core to increase the water retention capacity of the absorbent pad increases the thickness of the absorbent core. This can cause the wearer to feel uncomfortable wearing the absorbent pad.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide an absorbent pad that can be placed inside a diaper and that has an increased water retention capacity while reducing the discomfort felt when worn. [Means for solving the problem]

[0006] The main invention for achieving the above object is an absorbent pad that can be used by being placed inside a diaper having a pair of upright gathers, the absorbent pad having a longitudinal direction, a width direction and a thickness direction, the absorbent pad having a skin side sheet forming the skin side of the absorbent pad, a non-skin side sheet forming the non-skin side of the absorbent pad, and an absorbent core placed between the skin side sheet and the non-skin side sheet, wherein, when the absorbent pad is in a stretched state, the maximum length of the absorbent core in the longitudinal direction is 400 mm or more and 470 mm or less, and the maximum water retention capacity per unit area of ​​the absorbent pad is 3200×10 -6 ml / mm 2 The above is an absorbent pad characterized by having a plurality of compressed portions in which the absorbent core is compressed in the thickness direction so that the maximum thickness from the skin side of the skin side sheet to the non-skin side of the non-skin side sheet is 2 mm or more and 4 mm or less. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, it is possible to provide an absorbent pad that can be placed inside a diaper and that has an increased water retention capacity while reducing discomfort when worn. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a plan view of pad 1 in an expanded and stretched state, as viewed from the skin-facing side. [Diagram 2] FIG. 2 is a plan view of pad 1 in an expanded and stretched state, as viewed from the non-skin facing side. [Diagram 3] 2 is a schematic cross-sectional view of the pad 1 taken along line II in FIG. [Figure 4] 13 is an explanatory diagram of a first fixed portion 231 and a second fixed portion 232 of the three-dimensional gather portion 20. FIG. [Diagram 5] FIG. 1 is a plan view of a tape-type diaper 30 to be used in combination with the pad 1. [Figure 6]Figure 6A is a diagram showing the pattern of compressed portions 40 provided on an absorbent core 10, Figure 6B is a cross-sectional view of the absorbent core 10 before the compressed portions 40 are provided, and Figure 6C is a cross-sectional view of the absorbent core 10 with the compressed portions 40 provided. [Figure 7] 7A to 7D are diagrams showing the state in which the pad 1 is attached. [Figure 8] 8A and 8B are diagrams for explaining the standing height of the standing gather portion 20. FIG. [Figure 9] 1 is a table summarizing the sizes and water retention capacities of pads in Examples and Comparative Examples 1 to 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] At least the following points will become apparent from the description of this specification and the accompanying drawings. An absorbent pad that can be used by being placed inside a diaper having a pair of three-dimensional gathers, the absorbent pad having a longitudinal direction, a width direction and a thickness direction, the absorbent pad having a skin-side sheet that forms the skin side of the absorbent pad, a non-skin side sheet that forms the non-skin side of the absorbent pad, and an absorbent core placed between the skin-side sheet and the non-skin side sheet, wherein, in a stretched state of the absorbent pad, the maximum length of the absorbent core in the longitudinal direction is 400 mm or more and 470 mm or less, and the maximum water retention capacity per unit area of ​​the absorbent pad is 3200×10 -6 ml / mm 2 The above-mentioned absorbent pad is characterized in that it has a plurality of compressed portions in which the absorbent core is compressed in the thickness direction so that the maximum thickness from the skin side of the skin side sheet to the non-skin side of the non-skin side sheet is 2 mm or more and 4 mm or less.

[0010] Such an absorbent pad has a high water retention capacity, but the compressed parts make it relatively thin, so that discomfort when worn is reduced. In addition, the absorbent pad has a high water retention capacity, but the length of the absorbent core is relatively short, so that it can be placed inside the diaper. In particular, there is a high probability that the side of the absorbent pad can be placed inside the three-dimensional gathers of the diaper without folding the part of the absorbent pad where the absorbent core is placed in the longitudinal direction.

[0011] The absorbent pad has a maximum water retention capacity of 3200×10 -6 ml / mm 2 As described above, the absorbent pad is characterized in that the absorbent core comprises SAP.

[0012] According to such an absorbent pad, the water retention capacity can be increased by SAP, while the thickness of the absorbent pad can be reduced.

[0013] The absorbent pad is characterized in that the mass of the SAP contained in the absorbent core divided by the mass of the absorbent core is 40% or more.

[0014] According to such an absorbent pad, the water retention capacity can be increased by SAP, while the thickness of the absorbent pad can be reduced.

[0015] The absorbent pad has an estimated maximum water retention capacity per unit volume of 800×10 -6 ml / mm 3 An absorbent pad characterized by the above.

[0016] Such an absorbent pad has a thin thickness, reduces discomfort when worn, and has a high water retention capacity.

[0017] The absorbent pad is characterized in that, when the absorbent pad is in a stretched state, the maximum length of the absorbent pad in the longitudinal direction is 470 mm or more and 550 mm or less.

[0018] According to such an absorbent pad, the sides of the absorbent pad can be stored inside the upright gathers of the diaper without folding the absorbent pad in the longitudinal direction or by shortening the length of the absorbent pad that is folded in the longitudinal direction.

[0019] The absorbent pad is characterized in that, when the absorbent pad is in a stretched state, the maximum width of the absorbent core in the width direction is 120 mm or more and 180 mm or less.

[0020] Such an absorbent pad increases the probability that the sides of the absorbent pad can be tucked inside the upright gathers of the diaper without folding the portion of the absorbent pad in the width direction where the absorbent core is located.

[0021] The absorbent pad is characterized in that, when the absorbent pad is in a stretched state, the maximum width of the absorbent pad in the width direction is 180 mm or more and 220 mm or less.

[0022] According to such an absorbent pad, the sides of the absorbent pad can be stored inside the upright gathers of the diaper without folding the absorbent pad widthwise or by shortening the length of the absorbent pad that is folded widthwise.

[0023] An absorbent pad as described above, characterized in that when the diaper is unfolded and stretched in the longitudinal direction of the diaper, the length between the standing origins of the three-dimensional gathered portion in the longitudinal direction of the diaper is 470 mm or more, and when the absorbent pad is stretched, the product length, which is the maximum length of the absorbent pad in the longitudinal direction, is longer than the length between the standing origins, the absorbent pad can be attached to the diaper with the portion of the absorbent pad that is outer than the absorbent core in the longitudinal direction folded, and when the product length is equal to or less than the length between the standing origins, the absorbent pad can be attached to the diaper without being folded in the longitudinal direction.

[0024] When such an absorbent pad is used in combination with a diaper, the portion of the absorbent pad in which the absorbent core is disposed is not folded in the longitudinal direction, so that no unevenness is created when the absorbent pad is worn, and discomfort when worn is reduced.

[0025] The absorbent pad is characterized in that the absorbent pad can be attached to the diaper in a state where the absorbent pad is not folded in the width direction.

[0026] Such an absorbent pad can prevent the side portions of the absorbent pad from being folded over, which can lead to side leakage, and can prevent the absorbent surface of the absorbent pad from being covered by the side portions, thereby reducing the absorption area.

[0027] Such an absorbent pad is characterized in that the multiple compression portions have multiple linear compression portions with different inclinations, have multiple areas surrounded by the multiple linear compression portions, and the maximum thickness from the skin surface of the skin side sheet to the non-skin surface of the non-skin side sheet within the area is 2 mm or more and 4 mm or less.

[0028] According to such an absorbent pad, the non-compressed portions are surrounded by a plurality of compressed lines, so that the thickness of the non-compressed portions (absorbent pad) can be made thinner, reducing the discomfort felt when worn.

[0029] Such an absorbent pad is characterized in that the absorbent pad has a pair of other three-dimensional gathered portions, and when the absorbent pad is in an extended state, the length from the tip to the rising point of the other three-dimensional gathered portions in the width direction is shorter than the length from the rising point of the other three-dimensional gathered portions in the width direction to the outer edge of the absorbent pad.

[0030] According to such an absorbent pad, the excrement that has exceeded the standing gathers of the absorbent pad can be blocked by the side portions in the width direction of the absorbent pad.

[0031] Such an absorbent pad is characterized in that the absorbent pad has a pair of other three-dimensional gathered portions, and when the absorbent pad is in an extended state, the length from the tip of the other three-dimensional gathered portions to their rising starting points in the width direction is longer than the length from the rising starting points of the other three-dimensional gathered portions to the outer edge of the absorbent pad in the width direction.

[0032] According to such an absorbent pad, even if the side portion of the absorbent pad falls inward, the standing gather portion can be prevented from being covered, and the standing ability of the standing gather portion can be ensured.

[0033] The absorbent pad is characterized in that the mass of the SAP contained in the absorbent core divided by the mass of the absorbent core is 40% or more, and when the absorbent pad is in an extended state, the maximum length of the absorbent pad in the longitudinal direction is 470 mm or more and 550 mm or less, the maximum width of the absorbent core in the width direction is 120 mm or more and 180 mm or less, and the maximum width of the absorbent pad in the width direction is 180 mm or more and 220 mm or less.

[0034] Such an absorbent pad has a high water retention capacity, but the thickness is relatively thin due to the compressed parts, so that the discomfort felt when worn is reduced. In addition, the water retention capacity is high, but the length and width of the absorbent core and absorbent pad are relatively short. Therefore, the side of the absorbent pad can be placed inside the three-dimensional gathers of the diaper without folding the part of the absorbent pad where the absorbent core is located, or by shortening the folding length.

[0035] An absorbent pad as described above, characterized in that when the diaper is unfolded and stretched in the longitudinal direction of the diaper, the length between the standing origins of the three-dimensional gathered portion in the longitudinal direction of the diaper is 470 mm or more, and when the absorbent pad is stretched, the product length, which is the maximum length of the absorbent pad in the longitudinal direction, is longer than the length between the standing origins, the absorbent pad can be attached to the diaper with the portion of the absorbent pad that is outer than the absorbent core in the longitudinal direction folded, and when the product length is equal to or less than the length between the standing origins, the absorbent pad can be attached to the diaper when it is not folded in the longitudinal direction, and the absorbent pad can be attached to the diaper when it is not folded in the width direction.

[0036] According to such an absorbent pad, when used together with a diaper, the portion of the absorbent pad where the absorbent core is arranged is not folded in the longitudinal direction. Therefore, no step is created when the absorbent pad is worn, and discomfort when worn is reduced. In addition, it is possible to prevent side leakage caused by the side portions of the absorbent pad being folded in the width direction, and to prevent the absorption surface of the absorbent pad from being covered by the side portions, thereby reducing the absorption area.

[0037] The following describes an example of an absorbent pad according to the present embodiment, taking an adult urine absorption pad as an example. The urine absorption pad can be placed inside a tape-type or pants-type (disposable) diaper and used in combination with the diaper, or it can be placed directly inside the wearer's underwear and used alone.

[0038] <<Basic configuration of urine pad 1>> Fig. 1 is a plan view of the urine absorption pad 1 in an unfolded and extended state, as viewed from the skin-facing side. Fig. 2 is a plan view of the urine absorption pad 1 in an unfolded and extended state, as viewed from the non-skin-facing side. Fig. 3 is a schematic cross-sectional view of the urine absorption pad 1 taken along line II in Fig. 1. Fig. 4 is an explanatory diagram of a first fixing part 231 and a second fixing part 232 of the three-dimensional gather part 20.

[0039] The urine absorption pad 1 (hereinafter, simply referred to as "pad") has a rectangular planar shape, and has a longitudinal direction, a width direction, and a thickness direction that are perpendicular to each other. The longitudinal direction is along the front-rear direction from the abdominal side to the dorsal side of the wearer when the pad 1 is worn. In addition, in the thickness direction, the side that contacts the wearer's skin is referred to as the skin side or skin side, and the opposite side is referred to as the non-skin side or non-skin side. Since the pad 1 of this embodiment has a symmetrical configuration in the longitudinal direction, either side of the pad 1 in the longitudinal direction may correspond to the abdominal side of the wearer. In addition, unlike tape-type or pants-type diapers, the pad 1 is worn without one end and the other end in the longitudinal direction being connected along the wearer's waist.

[0040] As shown in Fig. 3, the pad 1 has an absorbent core 10, a liquid-permeable skin-side sheet 2 provided on the skin side of the absorbent core 10, and a liquid-impermeable non-skin-side sheet 3 provided on the non-skin side of the absorbent core 10. Furthermore, as shown in Fig. 2, the pad 1 may have a printed area P visible from the non-skin side.

[0041] An example of the absorbent core 10 is a liquid-absorbent fiber such as pulp containing SAP (super absorbent polymer) molded into a predetermined shape. The absorbent core 10 may or may not be covered with a liquid-permeable core wrap sheet 11 as shown in FIG.

[0042] The pad 1 also has a pair of upstanding three-dimensional gathers 20 (corresponding to other upstanding gathers of the present invention) on both widthwise sides, which can stand up against the skin. Each upstanding gather 20 has an elastic member 21 (e.g., rubber thread) that stretches in the longitudinal direction, and a pair of side sheets 22. As shown in FIG. 3, the pair of side sheets 22 are provided on both widthwise sides of the skin-side sheet 2. The inner end of the side sheet 22 in the widthwise direction is folded back toward the non-skin side, and the elastic member 21 is attached to the side sheet 22 between the folded back portions in a longitudinally stretched state. This causes a part of the side sheet 22 to stand up against the skin, thereby preventing lateral leakage of excrement.

[0043] As shown in FIG. 4, the three-dimensional gather portion 20 has a first fixing portion 231 and a second fixing portion 232 that fix the side sheet 22 to the skin surface of the skin side sheet 2 with an adhesive or the like. The first fixing portion 231 is provided continuously from one end to the other end of the side sheet 22 in the longitudinal direction. The second fixing portion 232 is provided on both ends of the pad 1 in the longitudinal direction, inside the first fixing portion 231 in the width direction. A plurality of second fixing portions 232 (three in this example) having a length shorter than the first fixing portion 231 are provided at each end of the pad 1 in the longitudinal direction, spaced apart in the width direction. In this case, the position of the inner end of the first fixing portion 231 in the width direction becomes the rising starting point 20a of the three-dimensional gather portion 20 in the width direction. The position of the inner end of the second fixing portion 232 in the longitudinal direction becomes the rising starting point 20b of the three-dimensional gather portion 20 in the longitudinal direction. In other words, the area inside the rising starting points 20a, 20b in the width direction and the length direction becomes the rising portion of the standing gather portion 20.

[0044] The configuration of the pad 1 is not limited to the above. For example, the pad 1 may not have the three-dimensional gather portion 20, and the pair of side sheets 22 may be composed of a single sheet. The planar shape of the pad 1 is not limited to a rectangle, and may be, for example, an hourglass shape with a narrow central portion in the longitudinal direction.

[0045] <<Pad 1 size and water retention capacity>> Fig. 5 is a plan view of a tape-type diaper 30 to be used together with the pad 1. Fig. 6A is a diagram showing a pattern of compressed portions 40 provided on the absorbent core 10, Fig. 6B is a cross-sectional view of the absorbent core 10 before the compressed portions 40 are provided, and Fig. 6C is a cross-sectional view of the absorbent core 10 with the compressed portions 40 provided. Figs. 7A to 7D are diagrams showing the worn state of the pad 1. Figs. 8A and 8B are diagrams explaining the standing height of the upright gather portion 20.

[0046] The pad 1 can be placed inside a diaper and used in combination with the diaper, or can be placed directly inside the wearer's underwear and used alone. As an example of a diaper that can be used in combination with the pad 1, a tape-type diaper 30 is shown in Fig. 5. Some diapers, such as the diaper 30 shown in Fig. 5, have a pair of three-dimensional gathers 31 that can stand up against the skin on both sides in the width direction.

[0047] Like the three-dimensional gather portion 20 of the pad 1, the three-dimensional gather portion 31 of the diaper 30 has a pair of side sheets 311 provided on both widthwise ends of the skin-side sheet 32 ​​of the diaper 30, and an elastic member (not shown) that stretches in the longitudinal direction of the diaper 30. The side sheet 311 is fixed to the skin surface of the skin-side sheet 32 ​​by an adhesive or the like at a first fixing portion 312 and a second fixing portion 313. The first fixing portion 312 is provided continuously from one end to the other end in the longitudinal direction of the side sheet 311. The second fixing portion 313 is provided on the inner side of the first fixing portion 312 in the widthwise direction, and a plurality of second fixing portions 313 are provided at both longitudinal ends of the diaper 30 with intervals in the widthwise direction. The position of the inner end of the first fixed portion 312 in the width direction becomes the rising starting point 31a of the three-dimensional gathered portion 31 in the width direction, and the position of the inner end of the second fixed portion 313 in the longitudinal direction becomes the rising starting point 31b of the three-dimensional gathered portion 31 in the longitudinal direction.

[0048] When the pad 1 is placed inside the diaper 30 having the upright gather portion 31, it is desirable to store the widthwise side portion of the pad 1 inside the upright gather portion 31 of the diaper 30. By doing so, the upright gather portion 31 of the diaper 30 can block the excrement that has exceeded the upright gather portion 20 of the pad 1, thereby preventing the excrement from leaking from the diaper 30.

[0049] For this reason, it is desirable that the pad 1 is contained within the range indicated by the dotted line in the diaper 30 in Fig. 5. Specifically, it is desirable that the pad 1 is contained within the range from the rising origin 31a on one side in the width direction of the upright gather portion 31 of the diaper 30 to the rising origin 31a on the other side, and within the range from the rising origin 31b on one side in the longitudinal direction of the upright gather portion 31 to the rising origin 31b on the other side. In the following description, the length W1 from the rising origin 31a on one side in the width direction of the upright gather portion 31 to the rising origin 31a on the other side is referred to as the "length W1 between the origins in the width direction," and the length L1 from the rising origin 31b on one side in the longitudinal direction of the upright gather portion 31 to the rising origin 31b on the other side is referred to as the "length L1 between the origins in the longitudinal direction."

[0050] In addition, urine pads are required to be usable for a long time. Therefore, the pad 1 of this embodiment has a maximum water retention capacity per unit area of ​​3200×10 -6 ml / mm 2 More preferably, the maximum water retention capacity per unit area of ​​the pad 1 is 4000×10 -6 ml / mm 2 By increasing the water retention capacity of the pad 1 in this way, leakage is less likely even if excreted repeatedly, and the pad 1 can be used for a long time. As a result, the number of times the pad 1 needs to be replaced is reduced, reducing the burden on the caregiver and also reducing the amount of used pad 1 (waste).

[0051] However, simply increasing the planar size of the absorbent core 10 in order to increase the water retention capacity of the pad 1 will result in an increase in the size of the pad 1, making it difficult to use the pad 1 inside the diaper 30. In particular, it will be difficult to store the sides of the pad 1 inside the three-dimensional gathers 31 of the diaper 30.

[0052] Therefore, in the pad 1 of this embodiment, the maximum length L2 (see FIG. 1) of the absorbent core 10 in the longitudinal direction is set to 400 mm or more and 470 mm or less when the pad 1 is in an extended state. The extended state of the pad 1 refers to a state in which the pad 1 is extended without wrinkles. Specifically, the pad 1 is extended until the dimensions of each member constituting the pad 1 (e.g., the side sheet 22, etc.) are equal to or close to the dimensions of the member alone when not affected by the elastic members of the pad 1.

[0053] As described above, by reducing the length L2 of the absorbent core 10, the probability that the side portion of the pad 1 can be stored inside the three-dimensional gather portion 31 of the diaper 30 is increased without folding the portion of the pad 1 where the absorbent core 10 is arranged in the longitudinal direction. Since the thick absorbent core 10 is not folded, no step is created in the pad 1, reducing discomfort when worn. In addition, it is possible to prevent a gap from being created between the pad 1 and the wearer at the step portion, which can cause excrement to leak.

[0054] Moreover, when commercially available diapers having upright gathers were surveyed, the length between the starting points in the longitudinal direction (L1) was found to be approximately 470 mm to 560 mm. Therefore, even if pad 1 is used in combination with various diapers, the side portion of pad 1 can be stored inside upright gather portion 31 of diaper 30 without folding the portion of pad 1 in which absorbent core 10 is arranged in the longitudinal direction.

[0055] On the other hand, by setting the maximum length of the absorbent core 10 to 400 mm or more, the planar size of the absorbent core 10 does not become too small, and the water retention capacity of the pad 1 is ensured.

[0056] Furthermore, as the basis weight of the absorbent core 10, particularly the basis weight of liquid-absorbent fibers such as pulp fibers, is increased in order to increase the water retention capacity of the pad 1, the thickness of the absorbent core 10 increases, which can cause the wearer to feel uncomfortable when wearing the pad.

[0057] Therefore, the pad 1 of this embodiment has multiple compressed portions 40 in which the absorbent core 10 is compressed in the thickness direction so that the maximum thickness t1 (see Figure 3) from the skin surface of the skin side sheet to the non-skin surface of the non-skin side sheet is 2 mm or more and 4 mm or less.

[0058] In addition, in the compressed portion 40, the density of the liquid absorbent fibers of the absorbent core 10 is higher and the thickness of the absorbent core 10 is thinner than in the portion where the absorbent core 10 is not compressed. The skin-side sheet is a sheet that overlaps the absorbent core 10 in the thickness direction and forms most of the skin side of the pad 1, and corresponds to the liquid-permeable skin-side sheet 2 in this embodiment. The non-skin-side sheet is a sheet that overlaps the absorbent core 10 in the thickness direction and forms most of the non-skin side of the pad 1, and corresponds to the liquid-impermeable non-skin-side sheet 3 in the pad 1 of this embodiment that does not have an exterior sheet.

[0059] Compared to the thickness t3 of the absorbent core 10 before it is compressed (FIG. 6B), not only the compressed portion 40 but also the thickness t2 of the non-compressed portion becomes thinner when a part of the planar surface of the absorbent core 10 is compressed (FIG. 6C). In particular, when the absorbent core 10 is compressed together with a sheet, the sheet is pulled toward the center in the thickness direction by the compressed portion 40, so that the thickness of the non-compressed portion is suppressed by the sheet and becomes thinner. Therefore, even if the basis weight of the absorbent core 10 (particularly the liquid absorbent fiber) is increased to increase the water retention capacity of the absorbent core 10, the thickness of the absorbent core 10 can be suppressed by the compressed portion 40. This reduces the discomfort felt when wearing the pad 1.

[0060] In the compression section 40, at least a part of the thickness of the absorbent core 10 needs to be compressed. In the compression section 40 of this embodiment, as shown in Fig. 6C, the absorbent core 10 and the core wrap sheet 11 are compressed. However, this is not limited thereto, and for example, the skin side sheet 2 and the non-skin side sheet 3 may be compressed together with the absorbent core 10. In addition, in the compression section 40 shown in Fig. 6C, the absorbent core 10 is compressed from the skin side, but the absorbent core 10 may be compressed from the non-skin side or from both sides in the thickness direction.

[0061] Furthermore, in the pad 1 of this embodiment, the maximum water retention capacity per unit area of ​​the pad 1 is 3200×10 -6 ml / mm 2 In order to satisfy the above, the absorbent core 10 includes SAP (super absorbent polymer). In the pad 1 of this embodiment, the mass ratio of SAP, i.e., the mass of SAP contained in the absorbent core 10 divided by the mass of the absorbent core 10, is set to 40% or more.

[0062] Increasing the mass ratio of SAP can increase the water retention capacity of the absorbent core 10 while reducing the basis weight of the liquid absorbent fiber contained in the absorbent core 10. Therefore, the maximum thickness t1 of the pad 1 can be reduced while increasing the water retention capacity of the pad 1.

[0063] However, the absorbent core 10 of this embodiment is compressed in the thickness direction. Therefore, if the mass ratio of SAP is too high, the portion where most of the SAP is compressed becomes hard, which may cause holes to appear in the core wrap sheet 11, etc. Therefore, the mass ratio of SAP in the absorbent core 10 is preferably 75% or less.

[0064] In addition, the estimated maximum water retention capacity per unit volume of pad 1 is 800 x 10 -6 ml / mm 3 In this embodiment, the estimated volume of the pad 1 is the volume of the pad 1 when it is assumed that the thickness of the entire plane of the pad 1 is uniform. Specifically, the planar area (mm 2 ) multiplied by the maximum thickness t1 (mm: thickness from the skin surface of the skin side sheet 2 to the non-skin surface of the non-skin side sheet 3) of the pad 1 described above. 3 ) is the estimated volume of pad 1. Therefore, the maximum water retention capacity (ml) of the entire pad 1 is calculated by multiplying the estimated volume (mm 3 ) is the estimated maximum water retention capacity per unit volume of pad 1 (ml / mm 3 )

[0065] The estimated maximum water retention capacity per unit volume of pad 1 is 800 x 10 -6 ml / mm 3That is, the water retention capacity per unit thickness of the pad 1 is high. Such a pad 1 has a high water retention capacity and can be used for a long time, and the maximum thickness t1 of the pad 1 is suppressed, reducing discomfort when worn.

[0066] Here, the following method is exemplified as a method for measuring the maximum water retention capacity per unit area of ​​the pad 1. First, the mass of the pad 1 is measured, and then the pad 1 is placed at an angle 20 mm below the water surface in a water tank containing physiological saline (0.9% NaCl) to prevent air bubbles from being generated, and then left for 30 minutes. Then, the pad 1 is removed and placed on a wire mesh with the absorbent side of the pad 1 facing down. An acrylic plate is placed on the pad 1, and a load of 10 kg is applied from above. This is left for 20 minutes. The pads 1 are arranged in a dehydrator with the absorbent side facing outward (when there are multiple pads 1, the pads 1 do not overlap), and dehydrated for 90 seconds (150 G). After that, the mass of the pad 1 is measured. The value obtained by subtracting the mass of the pad 1 before water absorption from the mass of the pad 1 after dehydration is regarded as the water retention capacity (ml) of the entire pad 1. The water retention capacity (ml) of the entire pad 1 is calculated based on the planar area (mm 2 ) is the maximum water retention capacity per unit area of ​​pad 1. The planar area of ​​pad 1 can be measured by a known method. For example, the length of each side of the planar surface of pad 1 may be actually measured and calculated, or the planar surface of pad 1 may be photographed with, for example, a digital microscope and the area of ​​pad 1 may be obtained from the photographed image using an automatic area measurement function.

[0067] The following method is exemplified as a method for measuring the maximum thickness t1 of the pad 1. First, the pad 1 is stretched to the product length. The area to be measured (the area where the skin side sheet, absorbent core, and non-skin side sheet are laminated) is moved about 20 mm to one side of the crease in the longitudinal direction. The thickness of the pad 1 is measured using a thickness measuring device (e.g., PEACOCK PIALTHICKNESS GAUGE, diameter 50 mm, model T06795, or equivalent). The load used for thickness measurement is 3 g / cm. 2The average value of the thicknesses at multiple locations may be set as the maximum thickness t1 of the pad 1.

[0068] The following method is exemplified as a method for measuring the mass ratio of SAP in the absorbent core 10. First, an arbitrary mass of SAP is taken out from the absorbent core 10 to be measured, and neutralization titration is performed using 1 mol / L hydrochloric acid to create a calibration curve and determine the polymer coefficient of the SAP. Next, the plane area of ​​the absorbent core 10 (not covered with the core wrap sheet 11) in the thickness direction and the mass of the entire absorbent core 10 (SAP + liquid absorbent fiber) are measured. After that, the absorbent core 10 is placed in ion-exchanged water in which an appropriate amount of sodium chloride is dissolved, and 1 ml of 1 mol / L hydrochloric acid is injected at each time, and the amount of hydrochloric acid injected at the point when the value of the pH meter measuring the pH of the ion-exchanged water changes significantly is read. The read value is multiplied by the above-mentioned polymer coefficient to obtain the mass of SAP contained in the absorbent core 10. The mass of SAP is divided by the mass of the entire absorbent core 10 to calculate the mass ratio of SAP in the absorbent core 10.

[0069] Furthermore, in the pad 1 of this embodiment, not only is the length L2 of the absorbent core 10 reduced (to 470 mm or less) so that the sides of the pad 1 fit inside the upright gathers 31 of the diaper 30, but the overall length of the pad 1 is also reduced. Specifically, when the pad 1 is stretched, the maximum length of the pad 1 in the longitudinal direction (product length L3) is set to 470 mm or more and 550 mm or less.

[0070] As mentioned above, the length L1 between the longitudinal starting points of the upright gathers in commercially available diapers is about 470 mm to 560 mm. Therefore, by making the product length L3 of the pad 1 550 mm or less, the probability that the side of the pad 1 will fit inside the upright gathers 31 of the diaper 30 will increase without folding a part of the pad 1 in the longitudinal direction. Even if it is necessary to fold a part of the pad 1 in the longitudinal direction, the folding length will be shortened, making it easier to fit the side of the pad 1 inside the upright gathers 31 of the diaper 30. On the other hand, by making the product length L3 of the pad 1 470 mm or more, the planar size of the absorbent core 10 will not become too small, and the water retention capacity of the pad 1 will be ensured.

[0071] In addition, it is preferable that the maximum width W2 (see FIG. 1) of the absorbent core 10 in the width direction be 120 mm or more and 180 mm or less when the pad 1 is stretched. This increases the probability that the side of the pad 1 can be accommodated inside the three-dimensional gather portion 31 of the diaper 30 without folding the portion of the pad 1 where the absorbent core 10 is arranged in the width direction. As a result, no step is created in the pad 1, reducing discomfort when worn, and preventing the step portion of the pad 1 from creating a gap between the wearer and the pad 1, which can lead to leakage.

[0072] Moreover, when commercially available diapers having upright gathers were surveyed, the length W1 between the starting points in the width direction was found to be approximately 180 mm to 220 mm. Therefore, even if pad 1 is used in combination with various diapers, the side portion of pad 1 can be stored inside upright gathers 31 of diaper 30 without folding the portion of pad 1 where absorbent core 10 is arranged in the width direction.

[0073] On the other hand, by setting the maximum width W2 of the absorbent core 10 to 120 mm or more, the planar size of the absorbent core 10 does not become too small, and the water retention capacity of the pad 1 is ensured.

[0074] Furthermore, when the pad 1 is stretched, it is desirable that the maximum width (product width) W3 of the pad 1 in the width direction is 180 mm or more and 220 mm or less. Since the length W1 between the starting points in the width direction of the upright gathers of commercially available diapers is about 180 mm to 220 mm, by making the maximum width W3 of the pad 1 220 mm or less, the probability that the side portion of the pad 1 will fit inside the upright gathers 31 of the diaper 30 will increase without folding a part of the pad 1 in the width direction. Also, even if it is necessary to fold a part of the pad 1 in the width direction, the folding length will be shortened, making it easier to fit the side portion of the pad 1 inside the upright gathers 31 of the diaper 30.

[0075] The above is especially desirable when the pad 1 has a three-dimensional gather portion 20. This makes it difficult for the standing portion of the three-dimensional gather portion 20 (the portion of the side sheet 22 on the inside of the standing starting point 31a in the width direction) to be folded up. As a result, the standing height of the three-dimensional gather portion 20 of the pad 1 is ensured, and side leakage can be suppressed.

[0076] On the other hand, by setting the product width W3 of the pad 1 to 180 mm or more, the planar size of the absorbent core 10 does not become too small, and the water retention capacity of the pad 1 is ensured.

[0077] However, without being limited to the above, the maximum length of the pad 1 in the longitudinal direction may be shorter than 470 mm or longer than 550 mm. The maximum width of the absorbent core 10 in the width direction may be shorter than 120 mm or longer than 180 mm. The width of the pad 1 in the width direction may be shorter than 180 mm or longer than 220 mm.

[0078] To sum up, in the pad 1 of this embodiment, the maximum length L2 of the absorbent core 10 in the longitudinal direction is 470 mm or less. Therefore, when used in combination with a diaper 30 in which the length L1 between the longitudinal starting points of the upright gather portion 31 is 470 mm or more, the pad 1 can be worn as follows. First, when the product length L3 of the pad 1 is longer than the length L1 between the longitudinal starting points of the upright gather portion 31 of the diaper 30 (L3>L1), the pad 1 can be worn in the diaper 30 with the portion of the pad 1 outside the absorbent core 10 in the longitudinal direction folded as shown in FIG. 7A. On the other hand, when the product length L3 of the pad 1 is equal to or less than the length L1 between the longitudinal starting points of the upright gather portion 31 of the diaper 30 (L3≦L1), the pad 1 can be worn in the diaper 30 without being folded in the longitudinal direction as shown in FIG. 7B.

[0079] The pad 1 can be attached in the width direction in the same manner. That is, when the product width W3 of the pad 1 is longer than the width direction starting point length W1 of the upright gather portion 31 of the diaper 30 (W3>W1), the pad 1 can be attached to the diaper 30 with the portion of the pad 1 on the outer side of the absorbent core 10 in the width direction folded, as shown in Fig. 7C. On the other hand, when the product width W3 of the pad 1 is equal to or less than the width direction starting point length W1 of the upright gather portion 31 of the diaper 30 (W3≦W1), the pad 1 can be attached to the diaper 30 without being folded in the width direction, as shown in Fig. 7D.

[0080] However, as shown in Fig. 7D, it is preferable that the pad 1 can be attached to the diaper 30 without being folded in the width direction. This ensures the standing height of the three-dimensional gather portion 20 of the pad 1. It also prevents the side portions of the pad 1 from being folded back toward the skin side, which would cause excrement to easily leak sideways. It also prevents the side portions of the pad 1 from being folded back toward the skin side, which would cause the absorbent surface of the pad 1 to be covered by the side portions of the pad 1, which would reduce the absorbent area of ​​the pad 1.

[0081] The pad 1 of this embodiment has a plurality of compressed portions 40 formed by compressing the absorbent core 10 in order to reduce the thickness t1 of the pad 1. The plurality of compressed portions 40 may be linear compressed portions formed in a line, or may be scattered compressed portions. The linear compressed portions may be groove-shaped compressed portions formed by continuous compression, or may be compressed portions in which dot-shaped compressed portions are arranged in a line.

[0082] In the pad 1 (absorbent core 10 and core wrap sheet 11) of this embodiment, as shown in Figure 6A, a plurality of wavy compressed lines 40 extending in the longitudinal direction are arranged in the width direction. The concaves and convexes of adjacent compressed lines 40 in the width direction are offset in the longitudinal direction. That is, at a certain position in the longitudinal direction, a certain compressed line 40 has a wavy shape (40a, 40b) that is convex on one side in the width direction, whereas an adjacent compressed line 40 has a wavy shape (40c, 40d) that is convex on the opposite side in the width direction. In other words, the pad 1 of this embodiment has a plurality of compressed lines 40 (e.g. 40a-40d) with different inclinations, and a plurality of non-compressed regions R surrounded by a plurality of compressed lines 40 (e.g. 40a-40d). The maximum thickness t1 of pad 1 in non-compressed region R (the maximum thickness from the skin surface of skin side sheet 2 to the non-skin surface of non-skin side sheet 3) is 2 mm or more and 4 mm or less.

[0083] By surrounding and partitioning the non-compressed portion with compressed lines 40 in this manner, the maximum thickness t1 of the pad 1 can be made thinner, thereby further reducing the sense of discomfort when worn. Note that it is not necessary to surround the non-compressed region R with a plurality of compressed lines without any gaps, and some or all of the plurality of compressed lines (for example, compressed lines 40a and 40c, or 40b and 40d) may be spaced apart without having any intersections.

[0084] The pad 1 of this embodiment also has a pair of upright gathers 21. As shown in Fig. 4, it is preferable that the rising starting point 20a of the upright gathers 20 in the width direction is located on the outer side of the absorbent core 10 in the width direction. This ensures that the stretching force of the elastic member 21 of the upright gathers 20 is not easily affected by the rigidity of the absorbent core 10 and acts firmly, thereby ensuring the uprightness of the upright gathers 20. This makes it possible to suppress leakage of excrement from the pad 1 and prevent soiling of underwear or a diaper 30.

[0085] In the pad 1 of this embodiment, as shown in FIG. 4, in the stretched state of the pad 1, the length W3 from the tip 20c (the inner end in the width direction of the side sheet 22) of the solid gather portion 20 to the rising point 20a in the width direction is longer than the length W4 from the rising point 20a of the solid gather portion 20 to the outer end 1a of the pad 1 in the width direction. In this case, as shown in FIG. 8A, the height of the rising portion of the solid gather portion 20 is higher than the height of the side portion of the pad 1 that is outside the rising point 20a of the solid gather portion 20. Therefore, even if the side portion of the pad 1 falls inward in the width direction, it is possible to prevent the side portion of the pad 1 from covering the solid gather portion 20. Thus, the standing ability of the solid gather portion 20 is ensured.

[0086] However, conversely to the above, when the pad 1 is stretched, the length in the width direction from the tip 20c of the standing gather portion 20 to the rising point 20a may be shorter than the length in the width direction from the rising point 20a of the standing gather portion 20 to the outer end 1a of the pad 1. In that case, as shown in Fig. 8B, the height of the side portion of the pad 1 that is on the outer side in the width direction of the rising point 20a of the standing gather portion 20 becomes higher than the height of the rising portion of the standing gather portion 20. Therefore, the excrement that exceeds the standing gather portion 20 can be blocked by the side portion of the pad 1.

[0087] === Example === FIG. 9 is a table summarizing the size and water retention of the pads of the Example and Comparative Examples 1 to 11. A pad having the configuration described in the above embodiment was produced as a sample of the Example. In the sample of the Example, the product length was 550 mm, the length of the absorbent core was 470 mm, and the width was 140 mm. The mass ratio of SAP in the absorbent core was 40% or more. In contrast, commercially available urine absorption pads were used as samples of Comparative Examples 1 to 11.

[0088] Then, for the samples of the examples and comparative examples 1 to 11, the size and the maximum water retention per unit area of ​​the sample were measured. The thickness of the sample was the maximum thickness from the skin surface of the skin side sheet to the non-skin surface of the non-skin side sheet. The thickness and water retention of the sample were measured by the above-mentioned measuring method. The length and width of the sample were measured in an unfolded and stretched state. For the samples in which the planar shape of the absorbent core was an hourglass shape, the maximum width of the absorbent core was measured.

[0089] In the sample of the embodiment, as shown in FIG. 6A, the absorbent core and the core wrap sheet were provided with compressed portions, resulting in a thickness of 4.0 mm. The maximum water retention capacity per unit area of ​​the sample was 4710×10 -6 ml / mm 2 It was.

[0090] The sample of Comparative Example 1 was manufactured by Unicharm Corporation and sold under the trade name "Lifree Adult Urine Strips." The product length was 490 mm, the absorbent core length was 410 mm, the width was 140 mm, and the thickness was 3.5 mm. The maximum water retention capacity per unit area of ​​the sample was 2624×10 -6 ml / mm 2 It was.

[0091] The sample of Comparative Example 2 was manufactured by Heng'an (China) Sanitary Products Co., Ltd. and was sold under the product name "elderjoy - Night Safe - Extended Leak Proof (M Size) Adult Urine Strips". The product length was 580 mm, the absorbent core length was 490 mm, the width was 130 mm, and the thickness was 5.1 mm. The maximum water retention capacity per unit area of ​​the sample was 2404 × 10 -6 ml / mm 2It was.

[0092] The sample of Comparative Example 3 is manufactured by Heng'an (China) Sanitary Products Co., Ltd. and has the product name "elderjoy - Night Safe - Extended Leak Proof (L Size) Adult Urine Strips". The product length was 680 mm, the absorbent core length was 600 mm, the width was 130 mm, and the thickness was 5.4 mm. The maximum water retention capacity per unit area of ​​the sample was 2950 × 10 -6 ml / mm 2 It was.

[0093] The sample of Comparative Example 4 was manufactured by Heng An (China) Sanitary Products Co., Ltd. and had the product name "elderjoy - Night Safe - Anti-Leaking Paste (M size)". The product length was 630 mm, the absorbent core length was 515 mm, the width was 280 mm, and the thickness was 6.3 mm. The maximum water retention capacity per unit area of ​​the sample was 1550 × 10 -6 ml / mm 2 It was.

[0094] The sample of Comparative Example 5 was manufactured by Heng'an (China) Sanitary Products Co., Ltd. and had the product name "elderjoy - Night Safe - Leak Proof (L size)". The product length was 690 mm, the absorbent core length was 610 mm, the width was 290 mm, and the thickness was 6.8 mm. The maximum water retention capacity per unit area of ​​the sample was 1626 × 10 -6 ml / mm 2 It was.

[0095] The sample of Comparative Example 6 is manufactured by Weida Trading Co., Ltd. and has the product name "Tianning Fully Efficient Leakproof (M-L Size) Adult Urine Strips". The product length was 590 mm, the absorbent core length was 525 mm, the width was 270 mm, and the thickness was 7.4 mm. The maximum water retention capacity per unit area of ​​the sample was 1659×10 -6 ml / mm 2 It was.

[0096] The sample of Comparative Example 7 is manufactured by Weida Trading Co., Ltd. and is sold under the trade name "Tianning Night Use Long-lasting (M-XL Size) Adult Urine Strips". The product length was 700 mm, the absorbent core length was 625 mm, the width was 305 mm, and the thickness was 8.9 mm. The maximum water retention capacity per unit area of ​​the sample was 2124×10 -6 ml / mm 2 It was.

[0097] The sample of Comparative Example 8 is manufactured by Weida Trading Co., Ltd. and is a product name "Packed Adult Long-lasting Leakproof (L Size) Adult Urine Strips". The product length was 820 mm, the absorbent core length was 725 mm, the width was 220 mm, and the thickness was 3.9 mm. The maximum water retention capacity per unit area of ​​the sample was 1209 × 10 -6 ml / mm 2 It was.

[0098] The sample of Comparative Example 9 is manufactured by Hangzhou Kokusai Care Products Co., Ltd. and is a product called "Kokusai Straight Strip Adult Urine Strip." The product length was 820 mm, the absorbent core length was 710 mm, the width was 230 mm, and the thickness was 3.7 mm. The maximum water retention capacity per unit area of ​​the sample was 1220 × 10 -6 ml / mm 2 It was.

[0099] The sample of Comparative Example 10 is manufactured by Hangzhou Kokuho Grooming Products Co., Ltd. and is sold under the trade name "Kokuho 8-shaped leakproof adult urine strips". The product length was 590 mm, the absorbent core length was 510 mm, the width was 280 mm, and the thickness was 4.9 mm. The maximum water retention capacity per unit area of ​​the sample was 1381×10 -6 ml / mm 2 It was.

[0100] The sample of Comparative Example 11 is manufactured by Hangzhou Kokuho Care Products Co., Ltd. and is a product called "Absorbent Treasure Adult Urine Strips". The product length was 720 mm, the absorbent core length was 570 mm, the width was 165 mm, and the thickness was 4.3 mm. The maximum water retention capacity per unit area of ​​the sample was 1310 × 10 -6 ml / mm 2 It was.

[0101] In the samples of Comparative Examples 1 to 11, the maximum water retention per unit area was 3200 × 10 -6 ml / mm 2 The maximum water retention per unit area of ​​the sample in the example is 3200 x 10 -6 ml / mm 2 As a result, the sample of the embodiment can be used for a long time.

[0102] Furthermore, although the samples of the Examples had a high water retention capacity, the product length and the length of the absorbent core were shorter than those of the samples of Comparative Examples 2 to 11. Therefore, when the samples of the Examples are used together with a diaper, the pad can be folded not in the longitudinal direction or the folded length can be shortened so that the sides of the pad can be stored inside the upright gathers of the diaper.

[0103] In addition, since the sample of the embodiment has a compressed portion, the thickness is the same as that of the sample of the comparative example, even though the water retention capacity is high. Therefore, the sample of the embodiment reduces the discomfort when worn.

[0104] Although the embodiment of the present invention has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. Furthermore, the present invention may be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. [Explanation of symbols]

[0105] 1 (Urine) Pad (Absorbent Pad), 10 Absorbent core, 11 Core wrap sheet, 2 skin side sheet, 3 non-skin side sheet, 20 Three-dimensional gather part (other three-dimensional gather part), 21 elastic member, 22 side sheet, 231 first fixed part, 232 second fixed part, 30 diaper, 31 three-dimensional gather part, 311 side sheet, 312 first fixing portion, 313 second fixing portion, 32 skin side sheet, 40 (linear) compression part,

Claims

1. An absorbent pad that can be used by being placed inside a diaper having a pair of three-dimensional gathers, The film has a longitudinal direction, a width direction, and a thickness direction, a skin-side sheet that forms a skin surface of the absorbent pad; a non-skin side sheet forming a non-skin side of the absorbent pad; an absorbent core disposed between the skin side sheet and the non-skin side sheet; An absorbent pad having When the absorbent pad is in a stretched state, the maximum length of the absorbent core in the longitudinal direction is 400 mm or more and 470 mm or less; The maximum water retention capacity of the absorbent pad per unit area is 3200 x 10 －６ ml / mm ２ That's all. The absorbent pad is characterized by having a plurality of compressed portions in which the absorbent core is compressed in the thickness direction so that the maximum thickness from the skin surface of the skin side sheet to the non-skin surface of the non-skin side sheet is 2 mm or more and 4 mm or less.

2. 2. The absorbent pad of claim 1, The maximum water retention capacity of the absorbent pad per unit area is 3200 x 10 －６ ml / mm ２ As described above, the absorbent pad is characterized in that the absorbent core comprises an SAP.

3. 3. The absorbent pad according to claim 2, An absorbent pad, characterized in that the mass of the SAP contained in the absorbent core divided by the mass of the absorbent core is 40% or more.

4. 4. The absorbent pad according to claim 1, The estimated maximum water retention capacity per unit volume of the absorbent pad is 800 x 10 －６ ml / mm ３ An absorbent pad characterized by the above.

5. 5. The absorbent pad according to claim 1, An absorbent pad, wherein in a stretched state, the maximum length of the absorbent pad in the longitudinal direction is 470 mm or more and 550 mm or less.

6. 6. An absorbent pad according to any one of claims 1 to 5, An absorbent pad, characterized in that, in a stretched state of the absorbent pad, the maximum width of the absorbent core in the width direction is 120 mm or more and 180 mm or less.

7. 7. The absorbent pad according to claim 6, An absorbent pad, wherein, in a stretched state, the maximum width of the absorbent pad in the width direction is 180 mm or more and 220 mm or less.

8. An absorbent pad according to any one of claims 1 to 7, The plurality of compression sections include a plurality of linear compression sections having different inclinations, The compression line has a plurality of regions surrounded by the plurality of compression lines, An absorbent pad characterized in that the maximum thickness from the skin surface of the skin side sheet to the non-skin surface of the non-skin side sheet within the region is 2 mm to 4 mm.

9. An absorbent pad according to any one of claims 1 to 8, The absorbent pad has a pair of other three-dimensional gather portions, An absorbent pad characterized in that, when the absorbent pad is in an extended state, the length in the width direction from the tip to the rising point of the other three-dimensional gathered portion is shorter than the length in the width direction from the rising point of the other three-dimensional gathered portion to the outer edge of the absorbent pad.

10. An absorbent pad according to any one of claims 1 to 8, The absorbent pad has a pair of other three-dimensional gather portions, An absorbent pad characterized in that, when the absorbent pad is in an extended state, the length in the width direction from the tip to the rising point of the other three-dimensional gathered portion is longer than the length in the width direction from the rising point of the other three-dimensional gathered portion to the outer edge of the absorbent pad.

11. 2. The absorbent pad of claim 1, The mass of the SAP contained in the absorbent core divided by the mass of the absorbent core is 40% or more; In the stretched state of the absorbent pad, The maximum length of the absorbent pad in the longitudinal direction is 470 mm or more and 550 mm or less, The maximum width of the absorbent core in the width direction is 120 mm or more and 180 mm or less, An absorbent pad, characterized in that the maximum width of the absorbent pad in the width direction is 180 mm or more and 220 mm or less.

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