Underpants-type absorbent article

Abstract

The utility model provides an underpants type absorptive article. The purpose of the present invention is to improve the ease of separation of a waist member and the operability when separating the waist member and engaging an engagement member in an underpants-type absorbent article that can also be used as a belt type. An underpants-type absorbent article (1) is provided with an engagement member (30) that is removably engaged with a waist member (20) that has a separation part (50) for separating the waist member, and at least a portion of the separation part overlaps the engagement member. A plurality of cutout portions (51) of the separation portion include an upper cutout portion (511) which is a second cutout portion counted from the top, a lower cutout portion (512) which is a second cutout portion counted from the bottom, and a middle cutout portion (513) located between the upper cutout portion and the lower cutout portion. The length of the middle cutout portion in the vertical direction is longer than the length of the upper cutout portion in the vertical direction and the length of the lower cutout portion in the vertical direction.

Description

Technical Field

[0001] This utility model relates to an absorbent item in the form of underwear. Background Technology

[0002] Previously, it was known that absorbent articles such as disposable diapers could also be used as belt-type (open type) items by partially separating the waistband component, which was formed as underwear (shorts). Patent Document 1 discloses a shorts-type sanitary napkin, which has an easy-tear line (separation part) extending from the edge of the waist opening to the edge of the leg opening, and a locking member with one end fixed to the waistband component and the other end detachably engaged with the waistband component. By tearing the waistband component along the easy-tear line to separate the waistband component, it can be installed in the same way as the belt type.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2024 / 111557 Utility Model Content

[0006] Problems to be solved by utility models

[0007] By setting an easy-tear line on the waist component, the waist component can be separated with less force, but there is still room for improvement regarding the ease of separation of the waist component.

[0008] Furthermore, the typical procedure for tearing the easy-tear line is as follows: grasp the waist component with both hands on either side of the easy-tear line and tear it along the line. Then, re-grasp the locking component and engage it with the waist component. In this case, it is difficult to perform the tearing of the waist component along the easy-tear line and the subsequent engagement of the locking component as a series of continuous operations, resulting in insufficient operability.

[0009] This invention was made in view of the above-mentioned problems. Its purpose is to improve the ease of separating the waistband component and the operability of separating the waistband component and engaging the engaging component in an underwear-type absorbent article that can be used as a belt by separating the waistband component from the front and back.

[0010] Solution for solving the problem

[0011] Technical solution 1 for achieving the above objective is an absorbent underwear-type garment having intersecting vertical and horizontal directions. This absorbent underwear-type garment comprises: an absorbent body; a waistband member having a front waistband and a back waistband; and a locking member, the outer ends of which are inseparably fixed to the waistband member in the horizontal direction, and the inner ends of which are detachably locked to the non-skin side of the waistband member. The locking members are respectively located on both sides of the waistband member in the horizontal direction. At both ends in the horizontal direction, the front waistband and the back waistband are joined together by a pair of side joints. The characteristic of this absorbent underwear-type garment is that the waistband member has... The garment includes a waist elastic member that extends and retracts in the left-right direction and a separation portion for separating the waist member. The separation portion has a plurality of slits and a plurality of non-slits arranged alternately in the up-down direction. When viewed along the thickness direction of the waist member, at least a portion of the separation portion overlaps with the engaging member. In the stretched state of the underwear-type absorbent garment, the plurality of slits include an upper slit as the second slit from the top, a lower slit as the second slit from the bottom, and an intermediate slit located between the upper slit and the lower slit. The length of the intermediate slit in the up-down direction is longer than the length of the upper slit in the up-down direction and the length of the lower slit in the up-down direction.

[0012] As mentioned above, the longer middle slit makes it easier to tear open the separation section, improving the ease of separating the waistband component. On the other hand, the shorter upper and lower slits, which are easier to tear open, prevent accidental tearing of the separation section. Furthermore, the user can keep the hand holding the locking member open in place while inserting the fingers of the opposite hand into the middle slit to grasp and tear the waistband component. Therefore, the user can tear open the waistband component without changing the position of the hand holding the locking member open, and engage the locking member within the waistband component, improving the operability of separating the waistband component and engaging the locking member.

[0013] Technical solution 2 for achieving the above-mentioned objective is an absorbent underwear-type garment having intersecting vertical and horizontal directions. This absorbent underwear-type garment comprises: an absorbent body; a waistband member having a front waistband and a back waistband; and a locking member, the outer ends of which are inseparably fixed to the waistband member in the horizontal direction, and the inner ends of which are detachably locked to the non-skin side of the waistband member. The locking members are respectively located on both sides of the waistband member in the horizontal direction. At both ends in the horizontal direction, the front waistband and the back waistband are joined together by a pair of side joints. The absorbent underwear-type garment is characterized in that the waistband member has a waistband elastic member that extends and retracts in the horizontal direction and a separation portion for separating the waistband member. The separation portion has multiple alternating cuts and multiple non-cuts in the vertical direction. When viewed along the thickness direction of the waistband member, at least a portion of the separation portion overlaps with the locking member. In the elongated state of the absorbent article, the waist member has an upper intersection point as the intersection of the edge of the waist opening and the imaginary line along the separation portion, and a lower intersection point as the intersection of the edge of the leg opening and the imaginary line. It also has an upper region extending from the upper intersection point to a position 20mm below, i.e., on the inner side, from the upper intersection point; a lower region extending from the lower intersection point to a position 20mm above, i.e., on the inner side, from the lower intersection point; and an intermediate region located between the upper and lower regions. A plurality of cuts have a middle cut in the intermediate region. The average length in the vertical direction of the plurality of cuts included in the upper region but not located at the upper intersection point is set as the upper average value, and the average length in the vertical direction of the plurality of cuts included in the lower region but not located at the lower intersection point is set as the lower average value. In this case, the vertical length of the middle cut is longer than both the upper and lower average values.

[0014] As mentioned above, the longer central slit makes it easier to tear open the separation section, thus improving the ease of separating the waistband component. On the other hand, the average length of the slits located in the upper and lower regions of the waistband component, which easily become the starting point for tearing open the separation section, is shorter, thereby preventing accidental tearing of the separation section. Furthermore, the user can keep the hand that is grasping the locking member open unchanged while inserting the fingers of the opposite hand into the central slit to grasp the waistband component and tear it open. Therefore, the user can tear open the waistband component and engage the locking member without changing the position of the hand that is grasping the locking member open, improving the operability of separating the waistband component and engaging the locking member.

[0015] Preferably, in the waist component, a plurality of waist elastic components are arranged at intervals in the vertical direction, and in the stretched state of the underwear-type absorbent article, the middle cut portion overlaps with the plurality of waist elastic components in the vertical direction.

[0016] As mentioned above, the longer length of the central incision makes it an easy starting point for tearing and separating the body components, thus improving the ease of separation. Furthermore, the contraction force of multiple elastic body components creates a concave-convex shape around the central incision. This makes it easier for the user to focus on the central incision. Additionally, when the user places their fingers into the central incision, the rigidity of the elastic body components allows the fingers to easily hook in, and the pulling force is easily transmitted to the body components.

[0017] Preferably, in technical solution 4, when viewed along the thickness direction, at least a portion of the intermediate cut overlaps with the engaging member.

[0018] As mentioned above, since the middle incision is partially or completely concealed from the outside, accidental tearing of the separation section can be prevented. Furthermore, the middle incision is easily located near the upper and lower ends of the waistband component, allowing access to the inner area in the vertical direction. Therefore, it is easy for the user to insert their fingers into the middle incision to grasp the waistband component and to pull. Additionally, the user's pulling force is easily and evenly transmitted upwards and downwards, making it easy to tear the separation section.

[0019] Preferably, in the extended state of the underwear-type absorbent article, the length of the middle cut portion in the vertical direction is shorter than the length of the locking member in the vertical direction from the top to the bottom.

[0020] As mentioned above, the length of the central slit in the vertical direction is not excessive. Furthermore, in its natural state, the central slit is easily covered by the locking mechanism. Therefore, accidental tearing of the separation section can be prevented.

[0021] Preferably, in technical solution 6, the engaging member has an engaging portion for engaging with the waist member, and in the extended state of the underwear-type absorbent article, the middle cut portion overlaps with the engaging portion in the vertical direction.

[0022] As mentioned above, the central cut is easily located in the middle of the waistband component in the vertical direction. Therefore, it is easy for the user to insert their fingers into the central cut to grasp the waistband component and to pull it. In addition, the user's pulling force is easily transmitted evenly upwards and downwards, making it easy to tear the separation part. Furthermore, when the waistband component extends, the locking mechanism can also be used to prevent the central cut from opening to the left and right, thus preventing accidental tearing of the separation part.

[0023] Preferably, in the extended state of the underwear-type absorbent article, when the two central regions of the range from the upper end to the lower end of the locking member are divided into four equal parts along the vertical direction and designated as the first central region, at least a portion of the middle cut overlaps with the first central region in the vertical direction.

[0024] As shown above, the central cut is easily located in the middle of the waistband component in the vertical direction. Therefore, it is easy for the user to insert their fingers into the central cut to grasp the waistband component and to pull it. In addition, the user's pulling force is easily transmitted evenly upwards and downwards, making it easy to tear open the separation section.

[0025] Preferably, in the stretched state of the underwear-type absorbent article, when the two central regions of the range from the upper end to the lower end of the side joint are divided into four equal parts along the vertical direction and designated as the second central region, at least a portion of the middle cut overlaps with the second central region in the vertical direction.

[0026] As shown above, the central cut is easily located in the middle of the waistband component in the vertical direction. Therefore, it is easy for the user to insert their fingers into the central cut to grasp the waistband component and to pull it. In addition, the user's pulling force is easily transmitted evenly upwards and downwards, making it easy to tear open the separation section.

[0027] Preferably, in the stretched state of the underwear-type absorbent article, at least a portion of the waist elastic members that overlap with the middle cut in the vertical direction are cut off at the middle cut in the horizontal direction.

[0028] As described above, it is easy for the user to insert their fingers into the middle cut to pull the waistband component. Furthermore, the number of waistband elastic components cut by the user is relatively small, allowing for easy tearing of the separation section. Additionally, the middle cut opens to the left and right due to the cut waistband elastic components. Therefore, the user can easily focus on the middle cut, easily identify the separation section, and be guided to insert their fingers into the opening of the middle cut to tear the waistband component.

[0029] Preferably, in the stretched state of the underwear-type absorbent article, the waist elastic member that overlaps with one of the cut portions other than the middle cut portion in the vertical direction crosses the cut portion in the horizontal direction, and the waist elastic member that overlaps with another cut portion other than the middle cut portion in the vertical direction is cut off at the cut portion in the horizontal direction.

[0030] As shown above, depending on whether the elastic waist member overlapping the cut is cut off, irregular (various shapes) openings are formed at each cut of the separation section. Therefore, users can easily focus on the separation section and easily identify its existence.

[0031] Preferably, in the left-right direction, the inner end of the upper cut portion is located further inward than the inner end of the middle cut portion.

[0032] As shown above, when a user places their fingers in the middle cut to pull the waist component inward in a left-right direction, the force is easily transmitted from the middle cut to the upper cut. Therefore, it is easy to tear open the separation section.

[0033] Preferably, in technical solution 12, the waist member has a high-density portion with a higher density than the surrounding area, and the high-density portion is located on both sides of the separation portion in the left-right direction.

[0034] As described above, the high-density section can suppress the loss of force in tearing the separation section due to fiber misalignment, making it easier to cut the fibers and tear the separation section. Furthermore, the high-density section maintains a planar shape, making it easy for the user to identify the separation section. Additionally, the high-density section is easy to hold when the user tears the separation section. Moreover, the planar shape of the broken end created by the separation section is easily maintained, facilitating the engagement and disengagement of the locking member and improving its operability.

[0035] Preferably, in technical solution 13, on the inner side of the waist member in the left-right direction, a first piece, a second piece, and a third piece are stacked together, and the waist elastic member is installed between the first piece and the second piece, and the second piece and the third piece are bonded together with an adhesive.

[0036] As mentioned above, the rigidity of the waist member is increased on the inner side in the left-right direction compared to the separation section. Therefore, it is easy for the user to grasp the waist member when pulling by inserting their fingers into the middle cut. In addition, it is easier to maintain the planar shape of the inner part of the waist member in the left-right direction compared to the separation section, thus making it easier to engage or disengage the locking member, improving the operability of the locking member.

[0037] Preferably, in the technical solution 14, during packaging, the two ends of the waist member in the left-right direction are folded inward in the left-right direction at the folding portion extending along the up-down direction, and the separating portion is located between the folding portion and the side joint portion in the left-right direction.

[0038] As described above, this design prevents the separating section from overlapping or crossing with the folded section. Therefore, it prevents the middle cut from opening due to the folded section during packaging and inhibits accidental tearing of the separating section.

[0039] Preferably, in technical solution 15, the separation portions are respectively disposed on both sides of the waist member in the left-right direction, and the maximum length of the opening of the middle cut portion in the separation portion on one side of the left-right direction and the separation portion on the other side of the left-right direction is different in the direction orthogonal to the separation portion.

[0040] As shown above, users who open the left and right locking components can easily see the middle cutouts with different widths of the openings, and can easily notice that there are separation parts and middle cutouts on both sides in the left and right direction.

[0041] Preferably, in technical solution 16, the separating portions are respectively disposed on both sides of the waist member in the left-right direction. In the extended state of the underwear-type absorbent article, the upper end of the middle cut portion and the upper end of the engaging member located on the upper side of the extension line along the up-down direction in the separating portion on one side of the left-right direction and the separating portion on the other side of the left-right direction have different lengths in the up-down direction.

[0042] As shown above, users who open the left and right locking components can easily see the middle cutouts in different positions relative to the vertical direction of the locking components, and can easily notice that there are separation parts and middle cutouts on both sides in the left and right direction.

[0043] Effects of the utility model

[0044] According to this utility model, in an absorbent underwear-type article that can also be used as a belt by separating the waistband component from the front and back, the ease of separating the waistband component and the operability of separating the waistband component and engaging the engaging component can be improved. Attached Figure Description

[0045] Figure 1 This is a rough 3D diagram of sanitary napkin 1.

[0046] Figure 2 This is a schematic top view of a sanitary napkin 1 in its unfolded and elongated state, viewed along the thickness direction.

[0047] Figure 3 yes Figure 2 A schematic diagram of the AA cross-section.

[0048] Figure 4A and Figure 4B This diagram illustrates the action of separating the waist component 20 of the sanitary napkin 1 from the front and back.

[0049] Figure 5 This is a diagram illustrating the separation section 50.

[0050] Figure 6 This diagram illustrates the configuration of the separation section 50 in a sanitary napkin 1 in its natural state.

[0051] Figure 7 This diagram illustrates the relationship between the separating part 50 and the peripheral part of the engaging member 30.

[0052] Figure 8A and Figure 8B This diagram illustrates the relationship between the separating part 50 and the peripheral part of the engaging member 30.

[0053] Figures 9A to 9E This diagram illustrates the operation method of separating the waist component 20 of the sanitary napkin 1 according to this embodiment and engaging the engaging component 30.

[0054] Figure 10A and Figure 10B This is a diagram illustrating the operation method of the comparative example, underwear-type sanitary napkin 100.

[0055] Figure 11 This is a diagram illustrating the relationship between the cut portion 51 and the waist elastic member 26.

[0056] Figure 12 This diagram illustrates the configuration of the high-density portion 70 in the waist component 20.

[0057] Figure 13A This is a partial cross-sectional view of the front waist and body section 20f. Figure 13B This is a partial cross-sectional view of the front waist section 60f of a modified sanitary napkin.

[0058] Figures 14A-14C This is a schematic diagram illustrating an example of a folding method when packaging sanitary napkin 1.

[0059] Figure 15 This is a diagram showing the difference between the middle cut portion 513 on one side in the left-right direction and the middle cut portion 513 on the other side in the left-right direction.

[0060] Explanation of reference numerals in the attached figures

[0061] 1. Sanitary napkin (underwear-type absorbent); 1a. Waist opening; 1b. Leg opening; 10. Absorbent body; 11. Absorbent core; 12. Top sheet; 13. Bottom sheet; 13a. Liquid-proof sheet; 13b. Hydrophobic sheet; 14. Leak-proof wall section; 14a. Leak-proof wall elastic component; 15. Absorbent body elastic component; 20. Waist component; 20f. Front waist section; 20b. Back waist section; 21. Non-skin side sheet; 22. Skin side sheet; 23. Skin side sheet; 26. Waist elastic component; 30. Snap-fit ​​component; 31. Base material sheet; 32. Engaging part; 40. Side joint part; 50. Separating part; 51. Incision part; 511. Upper incision part; 512. Lower incision part; 513. Middle incision part; 52. Non-incision part; 60f. Front waist part; 61. Non-skin side piece; 62. Skin side piece; 63. Middle piece; 70. High-density part; 71. Welded part; 100. Sanitary napkin (comparative example); 101. Separating part (comparative example); 102. Engaging member (comparative example); 103. Waist member (comparative example); F1. Folding part; F2. Folding part; F3. Folding part. Detailed Implementation

[0062] ===Implementation Methods===

[0063] As an example of an underwear-type (shorts-type) absorbent article according to an embodiment of this utility model, an underwear-type sanitary napkin 1 (hereinafter also simply referred to as "sanitary napkin 1") will be described. In addition, underwear-type absorbent articles also include underwear-type diapers, underwear-type absorbent pads, etc.

[0064] ===First Implementation Method===

[0065] <<Basic Structure of Sanitary Napkins>>

[0066] Figure 1 This is a schematic perspective view of the sanitary napkin 1 according to this embodiment. Figure 2 This is a schematic top view of a sanitary napkin 1 in its unfolded and elongated state, viewed along the thickness direction. Figure 3 yes Figure 2 A schematic diagram of the AA cross-section.

[0067] The "stretched state" of sanitary napkin 1 refers to the state in which the sanitary napkin 1 as a whole (the whole product) is stretched without wrinkles by stretching the various elastic components (such as the absorbent elastic component 15, the waist elastic component 26, etc., described later). Specifically, it refers to the state in which the size of each component constituting sanitary napkin 1 (such as the non-skin side sheet 21, the skin side sheet 22, 23, etc., described later) becomes the same as or close to the size of the individual component.

[0068] like Figure 1As shown, the sanitary napkin 1 has intersecting (orthogonal) "up-down", "left-right", and "back-forward" directions. Additionally, as... Figure 3 As shown, the thickness direction refers to the direction in which each component is stacked. In the up-down direction, the side that becomes the wearer's waist side when the sanitary napkin 1 is worn is designated as the "upper side," and the side that becomes the wearer's crotch side is designated as the "lower side." In the front-back direction, the side that becomes the wearer's abdomen side when worn is designated as the "front side," and the side that becomes the wearer's back side is designated as the "back side." Furthermore, in the thickness direction, the side that contacts the wearer's skin when the sanitary napkin 1 is worn is designated as the "skin side," and the opposite side is designated as the "non-skin side."

[0069] In addition, sanitary napkin 1 Figure 2 The unfolded state shown has mutually orthogonal "vertical direction" and "left-right direction". The "vertical direction" is the direction along the vertical direction of the panty-type sanitary napkin 1 and along the length direction of the absorbent body 10 described later.

[0070] The sanitary napkin 1 of this embodiment has an absorbent body 10 that absorbs menstrual blood and other excretory fluids, a waist member 20 that is overlapped on the non-skin side of the absorbent body 10, and locking members 30 respectively provided on both sides of the waist member 20 in the left and right directions.

[0071] The absorbent body 10, viewed from above, is generally rectangular in shape and includes an absorbent core 11, a liquid-permeable top sheet 12 (e.g., hydrophilic hot-air nonwoven fabric, spunbond nonwoven fabric, etc.) disposed on the skin-side of the absorbent core 11, and a bottom sheet 13 disposed on the non-skin-side of the absorbent core 11. The bottom sheet 13 includes a liquid-impermeable sheet 13a (e.g., resin film, etc.) and a hydrophobic sheet 13b (e.g., soft nonwoven fabric, etc.) disposed on the non-skin-side of the liquid-impermeable sheet 13a. However, the structure of the absorbent body 10 is not limited to the above structure. For example, a second sheet (not shown) may be provided between the top sheet 12 and the absorbent core 11 in the thickness direction, and the bottom sheet 13 may be composed only of the liquid-impermeable sheet 13a.

[0072] The absorbent core 11 is a component that absorbs and retains liquids such as menstrual blood, and is formed, for example, from liquid-absorbent fibers such as pulp fibers infused with superabsorbent polymers (SAP). Alternatively, the absorbent core 11 may also have its outer periphery covered by a liquid-permeable sheet component (core sheet) such as cotton paper or nonwoven fabric.

[0073] Alternatively, leak-proof wall portions 14 may be provided on both sides in the left-right direction of the absorbent body 10. For example, the leak-proof wall portions 14 are formed by bending hydrophobic sheets 13b extending from the non-skin-permeable side of the liquid-impermeable sheet 13a at multiple points and providing them on both sides in the left-right direction of the top sheet 12. In the leak-proof wall portions 14, the leak-proof wall elastic member 14a (e.g., elastic band) is installed in an extended state in the longitudinal direction, thereby causing the leak-proof wall portions 14 to stand upright towards the wearer's skin and intercept excretory fluids (menstrual blood, etc.).

[0074] Additionally, it is preferable that multiple absorbent elastic members 15 (e.g., elastic bands) be arranged in a longitudinally elongated state at a position closer to the non-skin side (between the film 13 and the absorbent core 11) than the absorbent core 11. Figure 2 Five absorbent elastic members 15 are provided at predetermined intervals in the left-right direction. The elongation ratio of the absorbent elastic members 15 is preferably about 1.4 to 3.3 times. Furthermore, the elongation ratio is expressed by dividing the length of the elastic member in the elongated state by the length of the elastic member in the natural state. By pre-setting the elongation ratio of the absorbent elastic members 15 to a relatively strong ratio, the absorbent body 10 (absorbent core 11) with high stiffness can be contracted from the non-skin side in the thickness direction and lifted towards the wearer's skin side. Therefore, the absorbent body 10 can easily fit snugly against the wearer's crotch area, suppressing the leakage of excretory fluids (menstrual blood, etc.).

[0075] The waist component 20 has a front waist section 20f that contacts the abdomen of the wearer's body and a back waist section 20b that contacts the back of the wearer's body. The sanitary napkin 1 (in its unfolded and extended state) Figure 2 The portion of the waist member 20 (outer component) that is forward of the central position CL in the longitudinal direction is designated as the front waist part 20f, and the portion of the waist member 20 (outer component) that is backward of the central position CL is designated as the back waist part 20b. If the unfolded sanitary napkin 1 is folded in half at the central position CL in the longitudinal direction, and the front waist part 20f and the back waist part 20b are joined together at both ends in the left and right directions using a pair of side joints 40, it becomes an underwear-type sanitary napkin 1. Figure 1 As shown, the panty-type sanitary napkin 1 has a waist opening 1a and a pair of leg openings 1b. Known joining methods such as sealing welding can be used as the joining method for the side joints 40.

[0076] Additionally, the waist member 20 includes a non-skin side panel 21, skin side panels 22 and 23 located closer to the skin side than the non-skin side panel 21, and multiple waist elastic members 26. The non-skin side panel 21 and the skin side panels 22 and 23 are soft, non-stretchable sheet materials (e.g., spunbond nonwoven fabric, SMS nonwoven fabric, etc.). In this embodiment, the non-skin side panel 21 has a shape that extends from the upper end of the front waist portion 20f along the longitudinal direction (vertical direction) to the upper end of the rear waist portion 20b, and narrows inward in the left-right direction at the center in the longitudinal direction. Figure 3 As shown, the ends of the non-skin side panel 21 in the vertical direction can also be folded back to form a folded portion 21F. On the other hand, the front skin side panel 22 and the rear skin side panel 23 are discontinuous in the longitudinal direction and are composed of separate sheets. However, the structure of the waist member 20 is not limited to the above structure. For example, similar to the non-skin side panel 21, the skin side panel may be a continuous sheet in the longitudinal direction, and the front skin side panel 22 and the rear skin side panel 23 may be a single sheet. Alternatively, the front waist portion 20f and the rear waist portion 20b may be separated in the longitudinal direction, and the non-skin side of the absorbent body 10 may be exposed to the outside at the crotch.

[0077] Multiple waist-body elastic members 26 are linear or strip-shaped elastic members (e.g., elastic cords, flat elastic bands) arranged at intervals in the vertical direction and stretching in the horizontal direction within the waist-body member 20. Figure 3 As shown, multiple waist elastic members 26 are installed between the non-skin side panel 21 and the skin side panels 22 and 23 in a state of elongation in the left and right direction. Through the left and right stretchability of the waist elastic members 26, the waist member 20 conforms to the wearer's waist.

[0078] The engaging member 30 (so-called the tongue) has a base plate 31 and an engaging portion 32 for engaging with the waist member 20. Furthermore, in the engaging member 30, the outer end in the left-right direction is fixed to the waist member 20 in an inseparable manner, while the inner end in the left-right direction engages with the non-skin side of the waist member 20 in a detachable manner. Figure 1 As shown, the engaging member 30 of this embodiment is provided on the front waist part 20f side and is engaged with the non-skin side of the front waist part 20f in a detachable manner.

[0079] The substrate sheet 31 is a sheet component made of non-woven fabric or the like, and is approximately semi-elliptical in shape, with its length in the vertical direction shortening towards the inner side in the horizontal direction of the sanitary napkin 1. Furthermore, the outer ends of the substrate sheet 31 in the horizontal direction are fixed to the waist member 20 in a non-separable manner using side joints 40. However, not limited to the above, the substrate sheet 31 may also be fixed to the waist member 20 in a non-separable manner at a location other than the side joints 40 (for example, at a location in the horizontal direction that is further inward than the side joints 40 and further outward than the separating portion 50 described later).

[0080] The engaging portion 32 is located at the inner end of the skin-side surface of the substrate sheet 31 in the left-right direction. As the engaging portion 32, an example is a hook-and-loop fastener with multiple engaging fastening members made of polypropylene or the like on the skin-side surface. Through the engaging portion 32, the engaging member 30 is detachably engaged with the non-skin-side surface of the waist member 20.

[0081] <<How to put on and take off sanitary napkins>>

[0082] Figure 4A and Figure 4B This diagram illustrates the action of separating the waist component 20 of the sanitary napkin 1 from the front and back. Figure 4A This is a cross-sectional diagram showing the state of the sanitary napkin 1 in its panty-like shape as viewed from the top side (the side where the waist opening 1a is located) in the vertical direction. Figure 4B This is a cross-sectional schematic diagram showing the state after the waist component 20 is separated front and back. Figure 5 This is a diagram illustrating the separation section 50. Figure 6 This diagram illustrates the configuration of the separation section 50 in a sanitary napkin 1 in its natural state. Figure 7 , Figure 8A as well as Figure 8B This is a diagram illustrating the relationship between the separating portion 50 and the peripheral portion of the engaging member 30. Furthermore, the separating portion 50, covered by the engaging member 30, is also hypothetically shown in the accompanying drawing.

[0083] The waist member 20 has a separating portion 50 (so-called easy-tear line) for separating the annular waist member 20. For example... Figure 2 and Figure 4A As shown, in the sanitary napkin 1 of this embodiment, the separating portions 50 are respectively provided on both sides of the front waist portion 20f in the left-right direction. Figure 5As shown, the separating section 50 has a plurality of "cut portions 51" and a plurality of "non-cut portions 52" arranged alternately in the vertical direction. In the cut portions 51, all or part of the sheet members (non-skin side sheet 21 and skin side sheet 22) stacked in the front waist section 20f are cut off. That is, the cut portion 51 is an opening that extends through the thickness direction by cutting off the entire sheet member, or a groove that is recessed in the thickness direction by cutting off part of the sheet member. In the separating section 50, the strength of the front waist section 20f is reduced by the cut portions 51, and the front waist section 20f is easier to tear in the vertical direction.

[0084] The separating section 50 extends vertically from the upper end 20fu (waist opening 1a) of the front waist section 20f to the lower end 20fl (leg opening 1b). Therefore, by tearing the front waist section 20f along the separating section 50 in the vertical direction, the waist member 20 is separated front and back. More specifically, as... Figure 4B As shown, it is separated into a portion from the front and left separation end 50feL to the front and right separation end 50feR and a portion from the rear and left separation end 50beL to the rear and right separation end 50beR.

[0085] Furthermore, the sanitary napkin 1 of this embodiment has an engaging member 30. Therefore, as Figure 4B As shown, the engaging portion 32 of the engaging member 30 can engage with the non-skin side of the waist member 20, which is separated from the front and back, on the side opposite to the side where the engaging member 30 is fixed (the front side without the side joint portion 40). Thus, by providing the engaging member 30 on the waist member 20 separated from the front and back, the waist member 20 can be made to become a ring shape again.

[0086] Therefore, the user (e.g., the wearer of sanitary napkin 1) can wear sanitary napkin 1 with the front waist section 20f torn open along either side of the separation portion 50 in the left-right direction. For example, after tearing open one side of the separation portion 50 in the left-right direction, one leg is passed through the leg opening 1b on the other side (the side without the separation portion 50 torn open) in the left-right direction. Then, the sanitary napkin 1 is lifted, the waist member 20 is wrapped around the wearer's waist, and the locking member 30 on one side of the left-right direction is locked into the front waist section 20f, thereby completing the wearing of sanitary napkin 1. In this case, only one leg needs to be passed through the leg opening 1b, thus improving the ease of wearing sanitary napkin 1. In addition, by adjusting the locking position of the locking member 30, the fit and wearing comfort of sanitary napkin 1 relative to the wearer are improved.

[0087] Additionally, the user can also wear the sanitary napkin 1 with the front waist section 20f torn open along the two sides of the separation section 50 in the left-right direction. For example, tear open one side of the separation section 50 in the left-right direction, wrap the separated part of the waist member 20 around the thigh, and engage the one side of the locking member 30 in the left-right direction with the front waist section 20f. This results in one leg of the wearer passing through the leg opening 1b in the left-right direction. Next, tear open the other side of the separation section 50 in the left-right direction. Then, lift the sanitary napkin 1, wrap the waist member 20 around the wearer's waist, and engage the other side of the locking member 30 in the left-right direction with the front waist section 20f, thus completing the wearing of the sanitary napkin 1. By providing a pair of locking members 30 on both sides of the waist member 20 in the left-right direction, the sanitary napkin 1 can be worn even without the leg passing through the leg opening 1b from the waist opening 1a of the sanitary napkin 1. Therefore, the wearer can wear sanitary napkin 1 without removing pants, shoes, pantyhose, etc., and can easily change sanitary napkin 1 even when out and about. However, the method of wearing sanitary napkin 1 is not limited to the above methods. For example, the user can also wear it while maintaining its initial state, i.e., in underwear-like form ( Figure 1 Wearing a sanitary napkin 1.

[0088] Furthermore, when wearing the sanitary napkin 1 in a panty-like position or when wearing the sanitary napkin 1 with the waistband 20 torn open on one or both sides, it is preferable to separate the waistband 20 back and forth using the left and right separation portions 50 after using the sanitary napkin 1. That is, when wearing it in a panty-like position, tear open the left and right separation portions 50. When wearing it with the waistband 20 torn open, peel the locking member 30 (locking portion 32) from the waistband 20. As a result, the sanitary napkin 1, which becomes a belt, can be pulled out from between the thighs, and the sanitary napkin 1 can be easily removed.

[0089] Additionally, when observing the sanitary napkin 1 in its natural state along the thickness direction of the waist component 20 (the front-to-back direction of the sanitary napkin 1), Figure 6 When the sanitary napkin 1 is in its natural state, at least a portion of the separating portion 50 overlaps with the engaging member 30. The natural state of the sanitary napkin 1 refers to the state in which the sanitary napkin 1 is placed on a flat surface such as a table without any load applied (non-stretched state). Furthermore, in the natural state of the sanitary napkin 1, the engaging member 30 is positioned so that it naturally closes relative to the non-stretched waist member 20. That is, the separating portion 50 is provided in any part of the area in the left-right direction within a region that is inside the fixing portion (side joint portion 40) of the engaging member 30 and outside the inner end of the engaging member 30.

[0090] Based on the above, the separating portion 50 is positioned relatively close to the side joint portion 40. Therefore, when the separating portion 50 is torn open ( Figure 4BThe sanitary napkin 1 can be separated into a central portion including the front waist section 20f (the part overlapping with the absorbent body 10) and a central portion including the rear waist section 20b (the part overlapping with the absorbent body 10). Furthermore, the length of the waist member 20 on the front side after the separation of the separation section 50 (the length from the separation end 50feL to the separation end 50feR) is relatively long. Therefore, the adjustment area of ​​the locking position of the locking member 30 is large, making it easy to adjust the circumference of the waist member 20 to fit the wearer's waist. Additionally, in the natural state of the sanitary napkin 1, the separation section 50 is partially or completely covered from the outside (non-skin side) by the locking member 30, thereby preventing accidental tearing of the separation section 50.

[0091] In addition, such as Figure 5 As shown, the plurality of incision portions 51 include an "upper incision portion 511" which is the second incision portion 51 from the top, a "lower incision portion 512" which is the second incision portion 51 from the bottom, and an "intermediate incision portion 513" located between the upper incision portion 511 and the lower incision portion 512. Furthermore, in the stretched state of the sanitary napkin 1 ( Figure 5 The length L3 of the middle cut portion 513 in the vertical direction is longer than the length L1 of the upper cut portion 511 in the vertical direction and the length L2 of the lower cut portion 512 in the vertical direction (L3>L1, L3>L2).

[0092] That is, a longer intermediate slit 513 is provided on the inner side of the upper and lower ends of the waist member 20 (front waist part 20f) in the vertical direction. Therefore, compared with a separation part without an intermediate slit 513 (i.e., a separation part consisting only of a shorter slit), the longer intermediate slit 513 is easier to use as a starting point to tear the separation part 50. Therefore, the waist member 20 is easier to separate when putting on and taking off the sanitary napkin 1.

[0093] Furthermore, compared to the middle cut 513, the upper cut 511 and lower cut 512 located at the upper or lower ends of the waist member 20 are more likely to become the starting point for tearing the separation portion 50. Therefore, by lengthening the middle cut 513 instead of lengthening the upper cut 511 and lower cut 512, accidental tearing of the separation portion 50 before, during, or after use of the sanitary napkin 1 can be prevented, and the annular waist member 20 can be maintained. Figure 4A ).

[0094] Furthermore, the separation portions 50 of the above-described structure are preferably provided on both sides of the waist member 20 in the left-right direction, but it is sufficient to provide them on at least one side of the waist member 20 in the left-right direction. Additionally, the length L3 of the middle cut portion 513 in the vertical direction of this embodiment is longer than the vertical length of each of the cut portions 51, including the upper cut portion 511 and the lower cut portion 512. Furthermore, in the stretched state of the sanitary napkin 1, the separation portion 50 of this embodiment is a straight line along the vertical direction, but the separation portion 50 may also be inclined relative to the vertical direction or be curved.

[0095] Figures 9A to 9E This diagram illustrates the operation method of separating the waist component 20 of the sanitary napkin 1 according to this embodiment and engaging the engaging component 30. Figure 10A and Figure 10B This is a diagram illustrating the operation method of the comparative example, underwear-type sanitary napkin 100.

[0096] The separating section 101 of the comparative example sanitary napkin 100 does not have a central cut 513, but rather a general tear line with multiple short, constant-length cuts. When wearing the comparative example sanitary napkin 100, the user first grasps the locking member 102, as... Figure 10A As shown, the engaging member 102 is opened outwards in the left-right direction, exposing the separating part 101. Users who visually recognize a typical separating part 101 (tear line) like the separating part 101 in the comparative example mostly grasp the left-right sides of the separating part 101 with both hands (e.g.,...). Figure 10A The user needs to tear open the separating part 101 by gripping the top part of the engaging member 102 (e.g., area A and area B). Figure 10B As shown in area C), the engaging member 102 engages with the waist member 103. Therefore, each time the user performs the operation of grasping the engaging member 102 to open it, re-grabbing both sides of the separating portion 101 to tear open the waist member 103, and then grasping the engaging member 102 again to engage it with the waist member 103, the user needs to change the position of their hand. Therefore, the operability of wearing the comparative example sanitary napkin 100 is poor.

[0097] In contrast, according to this embodiment of the sanitary napkin 1, when the user grasps the engaging member 30 and opens it to the left or right ( Figure 9A , Figure 9BThe central cut 513, which is a larger opening or groove, is visually recognizable. Therefore, the user can easily focus on the separating section 50 and easily identify its presence (tear line). Thus, the user can easily separate the waist member 20 using the separating section 50, improving the ease of separation. Furthermore, the user can easily recognize the tearing of the waist member 20 by inserting their fingers into the central cut 513.

[0098] Therefore, while keeping the hand gripping the engaging member 30 and opening it unchanged, the user can insert the fingers of the opposite hand into the middle cut 513 to grip the waist member 20 and tear it open. For example, as Figure 9C As shown, the user grasps the waist member 20 from the bottom (leg opening 1b side) and inserts their thumb into the middle cut 513, pulling the waist member 20 towards the side opposite to the engaging member 30 (inward in the left-right direction), thereby tearing the waist member 20 apart. Additionally, as... Figure 9D As shown, the user grasps the waist component 20 from the top (the side with the waist opening 1a) and inserts their index or middle finger into the middle cut 513, pulling on the waist component 20 to tear it open. Then, as... Figure 9E As shown, the user pulls the locking component 30 while maintaining the grip on it, and wraps it around the wearer's abdomen so that the locking part 32 engages with the non-skin side of the waist component 20 (front waist part 20f).

[0099] Based on the above, the user can maintain the position of their hand that is grasping the top of the engaging member 30 without changing the position of the hand that was grasping the top of the engaging member 30 in order to open the engaging member 30. Figure 9A In the case of tearing open the waist component 20 ( Figure 9C , Figure 9D ), and make the engaging component 30 engage with the waist component 20 ( Figure 9E Therefore, compared to wearing the sanitary napkin 100 in the comparative example, the action of changing the gripping position can be reduced. Therefore, the operability of separating the waist member 20 and engaging the locking member 30 can be improved. Therefore, the sanitary napkin 1 can be put on efficiently and easily. In addition, it is easy to transmit force to the waist member 20 by inserting fingers into the middle cut portion 513 and firmly gripping the waist member 20 by hand. Therefore, the waist member 20 can be easily torn open along the separating portion 50, and the ease of separating the waist member 20 is improved.

[0100] In addition, when the sanitary napkin 1 is stretched, the average length (e.g., in the vertical direction of all cut portions 51 except the middle cut portion 513) is... Figure 5 L51ave) is preferably longer than the average length in the vertical direction of all non-cut portions 52 (e.g., Figure 5The length of the cut portion 51 is greater than that of the non-cut portion 52 (L51ave > L52ave). Therefore, in the separating section 50, the proportion of the total length of the cut portion 51 is relatively high, making the separating section 50 easier to tear. However, it is not limited to the above situation; the average length L51ave of the cut portion 51 may also be less than or equal to the average length L52ave of the non-cut portion 52. Furthermore, in Figure 5 In the middle section, the vertical length of the cut portion 51, except for the uppermost and lowermost cut portions 51 reaching the upper and lower ends of the waist member 20 and the middle cut portion 513, is constant, but the vertical length of the cut portion 51 can also be irregular. Similarly, the vertical length of the non-cut portion 52 is not limited to being constant, but can also be irregular.

[0101] In addition, such as Figure 3 As shown, in this embodiment, the front waist portion 20f has a folded portion 21F formed by folding back the upper end of the non-skin side sheet 21. In the folded portion 21F, the number of layers of the sheet increases, therefore, the folded portion 21F is less prone to tearing compared to other parts. Therefore, it is preferable that, in the stretched state of the sanitary napkin 1 ( Figure 7 The folded-back portion 21F has a portion that overlaps with the central cut portion 513 in the vertical direction. Therefore, the folded-back portion 21F can be partially torn open beforehand or easily torn open, making it easy to tear. Especially when the user inserts their finger into the central cut portion 513 to tear open the separating portion 50, the separating portion 50 is torn open from the central portion in the vertical direction upwards and downwards. Therefore, as... Figure 7 In this case, when the middle cut portion 513 is located at the lower end of the folded-back portion 21F, the folded-back portion 21F is easily torn open because the middle cut portion 513 is located at the tearing start of the folded-back portion 21F.

[0102] In addition, such as Figure 5As shown, the waist member 20 (front waist part 20f) has an upper intersection point pu, which is the intersection of the edge (upper end 20fu) of the waist member 20 along the waist opening 1a and the imaginary line VL along the separation part 50, and a lower intersection point pl, which is the intersection of the edge (lower end 20fl) of the waist member 20 along the leg opening 1b and the imaginary line VL. Furthermore, the imaginary line VL along the separation part 50 refers to a line extending in the direction in which the separation part 50 extends (in this case, the vertical direction), a line overlapping the separation part 50, and a line extending upwards and downwards from the separation part 50 along the aforementioned direction (vertical direction). Furthermore, in the stretched state of the sanitary napkin 1, the waist member 20 has an upper region S1 extending from the upper intersection point pu to a position 20mm below (inner) from the upper intersection point pu, a lower region S2 extending from the lower intersection point pl to a position 20mm above (inner) from the lower intersection point pl, and an intermediate region S3 located between the upper region S1 and the lower region S2. Specifically, the upper region S1 is the area above the position 20mm below (inner) from the upper intersection point pu along an imaginary line in the left-right direction, and the lower region S2 is the area below the position 20mm above (inner) from the lower intersection point pl along an imaginary line in the left-right direction. At this time, the plurality of cuts 51 constituting the separating portion 50 have an intermediate cut 513 in the intermediate region S3.

[0103] Furthermore, the average length in the vertical direction of the multiple cut portions 516 contained in the upper region S1 but not located at the upper intersection point pu is defined as the "upper average value A1". In addition, a cut portion 516 contained in the upper region S1 refers to a cut portion 51 whose entire length lies within the upper region S1. For example, as... Figure 5 As shown, only the cut portion 51, which is partially located in the upper region S1, does not conform to the cut portion 516 included in the upper region S1, and its length does not include the upper average value A1. Additionally, as... Figure 5As shown, when the uppermost cut 517 reaches the upper end 20fu of the waist member 20 and is located at the upper intersection point pu, the length of the cut 517 is not included in the upper average value A1. Although not shown, when the uppermost cut 51 is not located at the upper intersection point pu but is located inside (below) the upper end 20fu of the waist member 20, the length of the cut 51 is included in the upper average value A1. Similarly, the average length of the multiple cuts 518 contained in the lower region S2 and not located at the lower intersection point pl is defined as the "lower average value A2". The cut 518 contained in the lower region S2 refers to the cut 51 whose entire length is located in the lower region S2. In addition, when the lowermost cut 519 is located at the lower intersection point pl, its length is not included in the lower average value A2; when the lowermost cut 519 is not located at the lower intersection point pl, its length is included in the lower average value A2. In the above case, it is preferable that the length L3 of the middle cut portion 513 in the vertical direction is longer than the upper average value A1 and the lower average value A2 (L3 > A1 and L3 > A2).

[0104] Therefore, the longer central cut 513 makes it easier to tear open the separation portion 50, improving the ease of separation of the waist member 20. On the other hand, the average length (A1, A2) of the cut portions 51 located in the upper region S1 and lower region S2 of the waist member 20, which are easy to become the starting point for tearing open the separation portion 50, is shorter, thus suppressing accidental tearing of the separation portion 50. In addition, by making the length L3 of the central cut 513 longer, the presence of the separation portion 50 is easier to identify, guiding the user as follows: Figure 9C , Figure 9D The waist member 20 is torn apart by inserting fingers into the middle cut 513. This allows the user to tear the waist member 20 by inserting fingers of the opposite hand into the middle cut 513 while keeping the hand that is gripping the engaging member 30 in place. Therefore, the user can tear the waist member 20 and engage the engaging member 30 without changing the position of the hand gripping the engaging member 30, thus improving the operability of separating the waist member 20 and engaging the engaging member 30.

[0105] However, not limited to the above, in the sanitary napkin 1 of the first embodiment, the length L3 of the middle cut portion 513 in the vertical direction is longer than the length L1 of the upper cut portion 511 (the second cut portion from the top) and the length of the lower cut portion 512 (the second cut portion from the bottom). In this case, the length L3 of the middle cut portion 513 in the vertical direction may be less than or equal to the upper average value A1, or the length L3 of the middle cut portion 513 in the vertical direction may be less than or equal to the lower average value A2.

[0106] Preferably, in the stretched state of sanitary napkin 1, such as Figure 7 As shown, it is preferable that the middle cutout 513 overlaps with multiple waist elastic members 26 in the vertical direction. Figure 7 In the middle, the central cut 513 overlaps with the four waist elastic components 26o.

[0107] Therefore, the length of the middle incision 513 in the vertical direction is longer, making it easier to use as a starting point to tear the separation portion 50. Thus, when putting on or taking off the sanitary napkin 1, it is easier to separate the waist support member 20. Furthermore, due to the contractile force of the multiple waist support elastic members 26, the periphery of the middle incision 513 becomes concave-convex. For example, if the multiple waist support elastic members 26 are cut at the middle incision 513, such as... Figure 11 As shown, the opening 513o of the intermediate cut 513 opens to the left and right, and the periphery of the opening 513o becomes concave-convex. Conversely, when one or more waist elastic members 26 are not cut at the intermediate cut 513, although not shown, the upper and lower intermediate cut portions 513 of the uncut waist elastic members 26 easily open to the left and right, and the periphery becomes concave-convex. Therefore, the user can easily focus on the intermediate cut 513. In addition, when the user puts his finger into the intermediate cut 513, regardless of whether the waist elastic member 26 is cut or not, the finger can easily hook on the waist elastic member 26 due to its stiffness, and the pulling force can easily be transmitted to the waist member 20.

[0108] In addition, such as Figure 7As shown, in the side joint portion 40, multiple welded portions 41, which are formed by fusing together sheet members constituting the waist member 20, are arranged in a vertical direction. In the extended state of the sanitary napkin 1, the average length (length from top to bottom of each welded portion 41) in the vertical direction of each of the multiple welded portions 41 overlapping the central cut portion 513 is set as the average length L41ave. Preferably, in the extended state of the sanitary napkin 1, the vertical length L3 of the central cut portion 513 is more than twice the average length L41ave of the welded portions 41 (L3 > 2 × L41ave). Therefore, compared to the opposite situation, the length L3 of the central cut portion 513 in the vertical direction can be ensured, making the separating portion 50 easy to tear. Furthermore, the presence of the separating portion 50 is easily identifiable, guiding the user to insert their fingers into the central cut portion 513 to tear the waist member 20. On the other hand, in the side joint 40, the smaller welded portions 41 are arranged more densely, so the waist member 20 is firmly joined, giving the user the impression of a high-quality product. Especially when the engaging member 30 is fixed at the side joint 40, the user is given the impression that the engaging member 30 is firmly secured, allowing them to confidently pull the engaging member 30 to install the sanitary napkin 1. Furthermore, in the side joint 40, when multiple rows of welded portions 41 arranged vertically are provided in the left-right direction, the welded portions 41 in the innermost row of the left-right direction (in...) Figure 7 The average length L41ave is calculated from the welded section 41 (with diagonal lines drawn in the middle).

[0109] Furthermore, when the central cut 513 is an opening that extends through the front waist section 20f in the thickness direction, it is preferable that the sheet members (non-skin side sheet 21 and skin side sheet 22) located at the central cut 513 are bent towards the skin side. Therefore, for example, in the process of forming the separating portion 50 during the manufacture of the sanitary napkin 1, it is preferable to cut the waist section 20 from the non-skin side (from the non-skin side 21) with a blade. This improves the visual recognizability of the central cut 513, making it easier for the user to identify the separating portion 50 and the central cut 513. Additionally, when the user inserts their fingers into the central cut 513, their fingers are less likely to get caught on the sheet members, allowing for smooth insertion.

[0110] Furthermore, it is preferable that the sanitary napkin 1 (in its natural state when viewed along the thickness direction of the waist member 20) Figure 6 When the intermediate cutout 513 overlaps at least partially with the engaging member 30, the intermediate cutout portion 513 is more preferably, as shown in the figure. Figure 6 As shown, it is preferable that the entire middle cutout 513 overlaps with the engaging member 30.

[0111] The intermediate cut portion 513 is relatively long, making it prone to becoming the starting point for tearing open the separation portion 50. Therefore, it is preferable that the intermediate cut portion 513 is partially or entirely covered by the engaging member 30 and not exposed on the outside. This helps to prevent accidental tearing open of the separation portion 50.

[0112] Furthermore, a large portion of the engaging member 30 overlaps with the waist member 20 in the vertical direction, so that the engaging member 30 engages with the waist member 20 (front waist portion 20f). Therefore, when the middle cutout 513 overlaps with the engaging member 30, the middle cutout 513 is easily located in the area that enters the inner part in the vertical direction than near the upper and lower ends of the waist member 20. By placing the middle cutout 513 in the center of the waist member 20 in the vertical direction, the user can easily insert their fingers into the middle cutout 513 to grasp the waist member 20, and it is easy to pull (…). Figure 9C , Figure 9D Furthermore, the force exerted by the user pulling on the waist member 20 is easily and evenly transmitted to the separation portion 50 above and below the central cut portion 513. Therefore, the separation portion 50 is easy to tear open, and the ease of separation of the waist member 20 is improved.

[0113] In addition, such as Figure 8A As shown, preferably, in the stretched state of the sanitary napkin 1, the length L3 of the middle cut portion 513 in the vertical direction is shorter than the length L30 of the locking member 30 in the vertical direction from the upper end 30u to the lower end 30l (L3 < L30). It should be noted that the middle cut portion 513 and the locking member 30 located on the same side in the left-right direction are compared.

[0114] Based on the above, the length L3 of the middle cut portion 513 in the vertical direction will not be too long, which can prevent accidental tearing of the separation portion 50 starting from the middle cut portion 513. In addition, in the natural state of the sanitary napkin 1, the middle cut portion 513 is easily covered by the locking member 30, which can also prevent accidental tearing of the separation portion 50.

[0115] In addition, such as Figure 8A As shown, preferably, in the stretched state of the sanitary napkin 1, the central cut portion 513 overlaps with the engaging portion 32 (e.g., the protruding member of the hook and loop fastener) in the vertical direction. It should be noted that the central cut portion 513 and the engaging portion 32 located on the same side in the horizontal direction are compared.

[0116] The engaging portion 32 is positioned at the center of the waist member 20 (front waist portion 20f) in the vertical direction for engaging with the waist member 20. Therefore, the central cutout portion 513 is also easily positioned at the center of the waist member 20 in the vertical direction. This makes it easy for the user to insert their fingers into the central cutout portion 513 to grasp the waist member 20 and to pull it easily. Furthermore, the force applied to pulling the waist member 20 is easily and evenly transmitted upwards and downwards, and the separating portion 50 is easy to tear open.

[0117] Furthermore, the waist member 20 extends in the left-right direction using the waist elastic member 26. At this time, the middle cut portion 513 also easily extends and opens in the left-right direction. However, the left-right extension of the portion of the waist member 20 located between the fixing part of the locking member 30, i.e., the side joint portion 40 and the locking portion 32, is suppressed by the locking member 30. Therefore, even if the waist member 20 extends during the wearing of the sanitary napkin 1, the middle cut portion 513, which overlaps with the locking portion 32 in the vertical direction, is not easily opened in the left-right direction. Therefore, accidental tearing of the separation portion 50 starting from the middle cut portion 513 can be suppressed.

[0118] In addition, such as Figure 8A As shown, in the stretched state of the sanitary napkin 1, when the area from the upper end 30u to the lower end 30l of the engaging member 30 is divided into four equal parts (R1 to R4) in the vertical direction, the two central regions are designated as the first central regions R2 and R3. Preferably, at least a portion of the intermediate cut 513 overlaps with the first central regions R2 and R3 in the vertical direction. It should be noted that the intermediate cut 513 located on the same side in the horizontal direction is compared with the engaging member 30.

[0119] Based on the above, the central cut 513 is easily located in the center of the waist member 20 in the vertical direction. Therefore, it is easy for the user to insert their fingers into the central cut 513 to grasp the waist member 20 and to pull it easily. In addition, the force of pulling the waist member 20 is easily transmitted evenly upwards and downwards, and the separation part 50 is easy to tear open.

[0120] In addition, such as Figure 7 As shown, in the stretched state of the sanitary napkin 1, when the area from the upper end 40u to the lower end 40l of the side joint portion 40 is divided into four equal parts (r1 to r4) in the vertical direction, the two central regions are designated as the second central regions r2 and r3. Preferably, at least a portion of the intermediate cut portion 513 overlaps with the second central regions r2 and r3 in the vertical direction. It should be noted that the intermediate cut portion 513 and the side joint portion 40 are compared using the same side in the horizontal direction.

[0121] Based on the above, the central cut 513 is easily located in the center of the waist member 20 in the vertical direction. Therefore, it is easy for the user to insert their fingers into the central cut 513 to grasp the waist member 20 and to pull it easily. In addition, the force of pulling the waist member 20 is easily transmitted evenly upwards and downwards, and the separation part 50 is easy to tear open.

[0122] Figure 11 This diagram illustrates the relationship between the incision 51 and the waist elastic member 26, and is a magnified view of a portion of the front waist section 20f in its natural state. The middle incision 513 overlaps with multiple waist elastic members 26 in the vertical direction, and has a relatively long vertical length. More preferably, in the stretched state of the sanitary napkin 1 ( Figure 7 It is preferable that at least a portion of the multiple waist elastic members 26o that overlap with the intermediate cut portion 513 in the vertical direction are cut off in the horizontal direction at the intermediate cut portion 513. Figure 11 In the middle section, three of the four waist elastic members 26o that overlap with the middle cut 513 are cut off, and one waist elastic member 26o is arranged across the middle cut 513 in the left-right direction.

[0123] Based on the above, when the user inserts their finger into the middle cut portion 513 to pull the waist member 20, the cut waist elastic member 26o will not snag on the finger, making it easy to insert the finger. In addition, when the user tears open the separation portion 50, the number of waist elastic members 26o cut along with the sheet member is small, so the user can easily tear open the separation portion 50.

[0124] Furthermore, the waist elastic members 26o, which are cut at the middle incision 513, contract in opposite directions to the left and right, with the middle incision 513 as the boundary. Therefore, in the natural state of the sanitary napkin 1, as... Figure 11 As shown, the sheet components (non-skin side panel 21 and skin side panel 22) stacked at the central cut 513 open to the left and right, forming a larger opening 513o. Therefore, users who have opened the latching member 30 can easily focus on the central cut 513 and easily identify the presence of the separating part 50 (tear line). In addition, it can guide users to insert their fingers into the opening 513o of the central cut 513 to tear open the waist member 20.

[0125] Furthermore, the portion of the sheet material closer to the cut elastic member 26o is more affected by the contraction force of the elastic member 26o, thus resulting in a larger opening in the lateral direction. Therefore, as... Figure 11As shown, when multiple waist elastic members 26o are cut in the middle cut portion 513, the periphery of the opening portion 513o of the middle cut portion 513 becomes concave-convex (the periphery where the waist elastic member 26 is located protrudes outward). Therefore, the shape of the middle cut portion 513 is easily noticeable, and the user can easily focus on the middle cut portion 513. In addition, when the user puts their fingers into the opening portion 513o, they can easily feel the texture of the waist member 20 (here, the front waist portion 20f). Therefore, it is possible to properly tear it open by hooking only the front waist portion 20f with their fingers. In addition, when the waist member 20 is not separated at the separation portion 50 during wearing, there is a situation where the periphery of the opening portion 513o of the middle cut portion 513 comes into contact with the wearer. In this case, if the periphery of the opening portion 513o is concave-convex, the length of the periphery of the opening portion 513 that comes into contact with the wearer is shorter, which can reduce the sense of disharmony during wearing.

[0126] Furthermore, preferably, when the sanitary napkin 1 is in its stretched state, it is connected to a cut 51 other than the central cut 513, for example... Figure 11 The waist elastic member 264, which overlaps the cut portion 514 in the vertical direction, spans the cut portion 514 in the horizontal direction, and is connected to another cut portion 51 other than the middle cut portion 513, for example... Figure 11 The waist elastic member 265, which overlaps in the vertical direction at the cut portion 515, is cut off in the horizontal direction at this cut portion 515. That is, preferably, the waist member 20 has both one or more waist elastic members 26 that are cut off at the cut portion 51 and one or more waist elastic members 26 that cross the cut portion 51 in the horizontal direction. In addition, the cut portions 51 other than the middle cut portion 513 also include the upper cut portion 511 and the lower cut portion 512.

[0127] Depending on whether the waist elastic member 26 overlapping the cut portion 51 is cut, the shape of the opening of the cut portion 51 in the sanitary napkin 1 in its natural state can easily vary. For example, in the cut portion 514 where the waist elastic member 264 is not cut but crosses the cut portion, the sheet member is pulled inward by the waist elastic member 264 in the left-right direction, easily forming an opening that is biased inward in the left-right direction. On the other hand, in the cut portion 515 where the waist elastic member 265 is cut, the sheet is pulled to both sides in the left-right direction, easily forming an opening that is larger on both sides in the left-right direction. In this way, irregular (various shapes) openings are formed in each cut portion 51 of the separation portion 50, making it easier for the user to focus on the separation portion 50. Therefore, the presence of the separation portion 50 is easily identified, and the waist member 20 can be easily separated using the separation portion 50.

[0128] In addition, such as Figure 6As shown, preferably, in the natural state of the sanitary napkin 1, in the left-right direction, the inner end 511E of the upper cut portion 511 (here, the upper end of the upper cut portion 511) is located further inward than the inner end 513E of the middle cut portion 513 (here, the upper end of the middle cut portion 513). That is, it is preferable that the separating portion 50 is inclined inward in the left-right direction from its central portion (middle cut portion 513) in the vertical direction toward the upper part (upper cut portion 511).

[0129] Based on the above, the force exerted by the user inserting their fingers into the middle cut 513 to pull the waist member 20 inward in the left-right direction is easily transmitted from the middle cut 513 toward the upper cut 511. Therefore, the separation portion 50 is easy to tear open. For example, by making the left-right stretching force at the upper end of the waist member 20 (based on the stretching force of the waist elastic member 26) higher than the left-right stretching force at the center of the waist member 20 in the up-down direction, the separation portion 50 can be tilted as described above.

[0130] Figure 12 This diagram illustrates the arrangement of the high-density portion 70 in the waist member 20. Preferably, the waist member 20 has a portion, the "high-density portion 70," with a higher density (density of the fibers constituting the sheet member) than the surrounding area, and the high-density portion 70 is provided on both sides of the separation portion 50 in the left-right direction. In this embodiment, the high-density portion 70 is formed by melting and joining multiple sheet members (non-skin side sheet 21 and skin side sheet 22) stacked at the front waist member 20f where the separation portion 50 is provided in the thickness direction. Specifically, as shown in Figure 12 As shown in the enlarged partial view (the area enclosed by a circle) of the high-density section 70, multiple welded portions 71, in which multiple sheet members are fused together, are dispersedly arranged. Furthermore, in Figure 12 In this process, the welded portion 71 is formed in a rectangular shape with an inclined arrangement, but the shape and arrangement of the welded portion 71 are not limited to this. In addition, not limited to the above, for example, multiple sheet members can be pressed to form a high-density portion without heating, or the sheet members can be fused together over the entire area of ​​the high-density portion 70.

[0131] In the high-density section 70, the fibers constituting the non-skin side sheet 21 and the skin side sheet 22 (non-woven fabric) are constrained by the welded section 71. Therefore, compared with the section where the high-density section 70 is not formed, the degree of freedom of the fibers is reduced. Therefore, the high-density section 70 can be used to suppress the loss of force due to fiber displacement when the force of tearing the waist member 20 at the separation section 50 is applied to the fibers, making it easier to cut the fibers. In particular, the displacement of the fibers in the non-cut section 52 is suppressed by the high-density sections 70 on both sides of the separation section 50, and the waist member 20 can also be torn in the vertical direction in the non-cut section 52. In addition, the high-density sections 70 on both sides of the separation section 50 can also suppress the stretching of the waist elastic member 26, so the waist elastic member 26 can be easily cut in the separation section 50.

[0132] Furthermore, the high-density section 70 easily increases the rigidity of the waistband member 20 (non-woven fabric), and it easily maintains a flat shape even in the natural state of the sanitary napkin 1. Therefore, it prevents the separation section 50 from being obscured by wrinkles in the waistband member 20, thus reducing its visual visibility and making it easier for the user to identify. Additionally, when the user tears open the separation section 50, it is easy to grasp the portion of the waistband member 20 where the high-density section 70 is located. Furthermore, after tearing open the separation section 50, the high-density section 70 remains at the cut end of the waistband member 20, maintaining the flat shape of the cut end. Therefore, it is easy to engage or disengage the locking member 30, improving its operability. Additionally, it helps to suppress any discomfort during wear caused by curled cut ends.

[0133] In addition, Figure 12 In this configuration, a high-density portion 70 is provided throughout the entire area from the upper end to the lower end of the front waist section 20f. However, it is not limited to this; the high-density portion 70 may also be provided only in the area that partially overlaps with the separating portion 50 in the vertical direction. For example, since the middle cut portion 513 is easy to tear, high-density portions 70 may be provided on both sides of the separating portion 50 in the left-right direction, excluding the middle cut portion 513. Furthermore, as... Figure 12 As shown, when viewing the waist member 20 along the thickness direction, it is preferable for the high-density portion 70 and the separation portion 50 to overlap. This allows the separation portion 50 to be formed cleanly and neatly within the high-density portion 70 with higher rigidity (making it possible to reliably cut the waist member 20 with a blade to form a cut portion 51). Therefore, the visual recognizability of the separation portion 50 is improved, and the separation portion 50 is also easier to tear. However, the high-density portion 70 can be provided on both sides of the separation portion 50 in the left-right direction, or it can be provided at a predetermined distance from the separation portion 50 in the left-right direction.

[0134] Figure 13A This is a partial cross-sectional view of the front waist and body section 20f. Figure 13BThis is a partial cross-sectional view of the front waist portion 60f of a modified sanitary napkin. The front waist portion 20f of the sanitary napkin 1 in this embodiment (see reference...) Figure 3 In this structure, the upper end of the non-skin side panel 21 is folded back downwards towards the skin side in the thickness direction, forming a folded-back portion 21F. Therefore, in the upper end of the front waist section 20f, the non-skin side panel 21 (first panel), the skin side panel 22 (second panel), and the folded-back portion 21F of the non-skin side panel (third panel) are stacked together. Furthermore, as... Figure 13A As shown, a waist elastic member 26 is installed between the non-skin side panel 21 and the skin side panel 22. For example, the waist elastic member 26 is installed on the non-skin side panel 21 and the skin side panel 22 using an adhesive such as a hot melt adhesive coated on the surface of the waist elastic member 26, and the non-skin side panel 21 and the skin side panel 22 are also joined using the same adhesive HMA. In addition, the folded-back portion 21F of the skin side panel 22 and the non-skin side panel 21 is bonded together using the adhesive HMA.

[0135] It is preferable that at least a portion (here, the upper end of the front waist member 20f where the separation portion 50 is located) of the waist member 20 (in the left-right direction) has the above-described structure. As a result, the rigidity of the upper end of the front waist member 20f, which has the above-described structure, is improved by the three-layer sheet member and the adhesive HMA.

[0136] Alternatively, it could be Figure 13B The modified front waist section 60f is shown in the following structure. In the modified front waist section 60f, non-skin side sheet 61, skin side sheet 62, and intermediate sheet 63 located between them are stacked together over a large area or the entire region in the vertical direction. Furthermore, the waist elastic member 64 is attached between the skin side sheet 62 (first sheet) and the intermediate sheet 63 (second sheet) using an adhesive HMA coated on its surface. Additionally, the intermediate sheet 63 is bonded to the non-skin side sheet 61 (third sheet) using the adhesive HMA. This structure is preferred for the front waist section 60f on the inner side in the left-right direction compared to the separation section. Thus, the stiffness of the front waist section 60f is improved by the three-layer sheet member and the adhesive HMA.

[0137] The rigidity of the front waist sections 20f and 60f is increased on the inner side of the separation section 50 in the left-right direction, making it easier for the user to grasp the front waist sections 20f and 60f when pulling with their fingers through the middle cut-out section 513. Furthermore, the planar shape of the portion of the front waist sections 20f and 60f on the inner side of the separation section 50 in the left-right direction is easily maintained. Therefore, it is easier to engage or disengage the locking member 30 relative to this planar shape, improving the operability of the locking member 30. Additionally, the broken end of the separation section 50 is less prone to curling, suppressing any sense of disharmony during wear. Moreover, compared to the first section, the third piece, which does not clamp the waist elastic members 26 and 64, can be... Figure 13A As shown, it is located on the side of the skin, or as... Figure 13B As shown, it is located on the non-skin side. Figure 13B Even when the third piece (non-skin side piece 61) partially floats up from the second piece (middle piece 63) when the locking member 30 is peeled off, the elasticity of the waist elastic member 64 can be maintained. In addition, in the portion of the waist member 20 (front waist part 20f, 60f) that is more inside in the left-right direction than the separating part 50, the sheet member can be configured to have 4 or more layers, in which case the rigidity of the waist member 20 is further improved.

[0138] Figures 14A-14C This is a schematic diagram illustrating an example of a folding method when packaging sanitary napkins 1. The sanitary napkins 1 of this embodiment are packaged individually or in multiple packages in a folded state at folding portions F1 to F3 and are thus marketed. As an example of a folding method, the following methods can be listed. First, as... Figure 14A As shown, at the folds F1 and F2 on the two outer sides of the absorbent body 10 in the left-right direction, along the vertical direction, the waist member 20 is folded to form... Figure 14B Next, at the fold F3 along the left-right direction, fold the sanitary napkin 1 vertically to become... Figure 14C The product is then packaged.

[0139] As described above, when packaging, it is preferable that the two ends of the waist member 20 in the left-right direction are folded inward in the left-right direction by the folds F1 and F2 extending in the vertical direction. Preferably, in the natural state of the sanitary napkin 1, in the panty-type state with the folds F1 to F3 opened, the following arrangement is preferred. Figure 14A As shown, the separating part 50 is located between the folding parts F1 and F2 and the side joining part 40 in the left-right direction.

[0140] This prevents the following situations: the separation part 50 overlaps with the folded parts F1 and F2, or the sanitary napkin 1 in its natural state (see reference). Figure 6The downward-sloping separating portion 50 intersects with the folded portions F1 and F2. If the intermediate cut portion 513 is located at the folded portions F1 and F2, then when packaging the sanitary napkin 1, the waist member 20 is stretched at the folded portions F1 and F2, and the intermediate cut portion 513 is easy to open. Especially in the manner in which the separating portion 50 is exposed on the outside (towards...) Figure 14A Conversely, when the waist member 20 is folded in such a way that the rear waist section 20b becomes the inside, the middle cut 513 is easy to open. Therefore, based on the above, it is possible to prevent the middle cut 513 from opening at the folds F1 and F2 during packaging, and to suppress the accidental tearing of the separation section 50.

[0141] Figure 15 This diagram illustrates the difference between the middle cut portion 513 on one side in the left-right direction and the middle cut portion 513 on the other side in the left-right direction, and also shows the state of the sanitary napkin 1 after the locking member 30 is opened in its natural state. In the sanitary napkin 1 of this embodiment, the separating portions 50 having the middle cut portion 513 are respectively provided on both sides of the waist member 20 (front waist portion 20f) in the left-right direction. In this case, it is preferable that, in the natural state of the sanitary napkin 1, the maximum length of the opening of the middle cut portion 513 differs in the direction orthogonal to each separating portion 50. For example, in Figure 15 In the left-right separation portion 50L, the maximum length Wl of the opening of the intermediate cut portion 513L is longer than the maximum length Wr of the opening of the intermediate cut portion 513R of the other left-right separation portion 50R. This is due to factors such as whether the waist elastic member 26 is cut in the left and right intermediate cut portions 513 and the difference in the length of the intermediate cut portion 513.

[0142] Based on the above, users who open the left and right locking members 30 can easily see the middle cut 513 with different widths of the opening, and can easily notice that there are separating parts 50 and middle cut 513 on both sides in the left-right direction. Therefore, it is possible to guide users to use the separating parts 50 to tear open the waist member 20 or to put their fingers into the middle cut 513 to tear open the waist member 20.

[0143] Additionally, when the sanitary napkin 1 is stretched, the separation portion 50L on one side in the left-right direction ( Figure 8A The vertical length between the upper end 513Lu of the middle cut portion 513L of the sanitary napkin 1 and the upper end 30Lu of the engaging member 30L located on the upper side of the extension line from the upper end 513Lu along the vertical direction is set to L4. Additionally, in the stretched state of the sanitary napkin 1, the separation portion 50R on the other side in the left-right direction is... Figure 8BThe vertical length between the upper end 513Ru of the middle cutout portion 513R and the upper end 30Ru of the engaging member 30R located on the upper side of the extension line from the upper end 513Ru along the vertical direction is set as L5. In this case, it is preferable that the lengths L4 and L5 are different.

[0144] Therefore, in the natural state of sanitary napkin 1, it is also ( Figure 6 The length of the middle cutout 513 from its upper end to its upper end of the engaging member 30 in the vertical direction is prone to being different left and right. That is, the position of the middle cutout 513 relative to the engaging member 30 in the vertical direction is different left and right. Figure 6 In the middle section, on one side in the left-right direction, the middle cut-out portion 513L is located on the upper side relative to the engaging member 30L. Therefore, a user who opens the left and right engaging members 30 can easily see the middle cut-out portion 513, which is positioned differently in the vertical direction relative to the engaging member 30, and can easily notice that the separating portion 50 and the middle cut-out portion 513 are provided on both sides in the left-right direction. Therefore, it is possible to guide the user to use the separating portion 50 to tear open the waist member 20 or to insert their fingers into the middle cut-out portion 513 to tear open the waist member 20.

[0145] ===Second Implementation Method===

[0146] Descriptions of structures in the sanitary napkin of the second embodiment that are identical to those in the sanitary napkin 1 of the first embodiment are omitted. Furthermore, aspects common to the separating portion 50 of the sanitary napkin 1 of the first embodiment are shown in the same drawings. Figure 5 The same reference numerals will be used for description. Similar to the sanitary napkin 1 of the first embodiment, the waist member 20 (front waist part 20f) of the sanitary napkin of the second embodiment has an upper region S1, a lower region S2, and an intermediate region S3 located between the upper region S1 and the lower region S2. Furthermore, the plurality of cut portions 51 constituting the separating part 50 have an intermediate cut portion 513 in the intermediate region S3. The average length of the plurality of cut portions 516 included in the upper region S1 and not located at the upper intersection point pu in the vertical direction is defined as "upper average value A1", and the average length of the plurality of cut portions 518 included in the lower region S2 and not located at the lower intersection point pl in the vertical direction is defined as "lower average value A2". In this case, the length L3 of the intermediate cut portion 513 in the vertical direction is longer than the upper average value A1 and the lower average value A2 (L3 > A1 and L3 > A2).

[0147] Therefore, the longer central cut 513 makes it easier to tear open the separation portion 50, improving the ease of separation of the waist member 20. On the other hand, the average length (A1, A2) of the cut portions 51 located in the upper region S1 and lower region S2 of the waist member 20, which are easy to become the starting point for tearing open the separation portion 50, is shorter, thus suppressing accidental tearing of the separation portion 50. In addition, by making the length L3 of the central cut 513 longer, the presence of the separation portion 50 is easier to identify, guiding the user as follows: Figure 9C , Figure 9D As shown, a finger is inserted into the middle cut 513 to tear open the waist member 20. Therefore, the operability of separating the waist member 20 and engaging the engaging member 30 is improved.

[0148] In the sanitary napkin of the second embodiment, the length L3 of the middle cut portion 513 in the vertical direction is only required to be longer than the average value A1 of the upper part and the average value A2 of the lower part. Therefore, in the sanitary napkin of the second embodiment, the length L3 of the middle cut portion 513 in the vertical direction may be less than or equal to the length L1 of the upper cut portion 511 of the second cut portion 51 from the top, or less than or equal to the length of the lower cut portion 512 of the second cut portion 51 from the bottom.

[0149] ===Others===

[0150] The above-described embodiments are for ease of understanding of the present invention and are not intended to limit the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from its spirit, and that equivalents are included in the present invention.

[0151] For example, it could also be an absorbent underwear-type item with a snap fastener 30 and a separation portion 50 located on the back waist section 20b. The back waist section 20b is torn open along the separation portion 50, and then the snap fastener 30 snaps onto the non-skin side of the back waist section 20b.

Claims

1. An absorbent underwear-type garment having intersecting vertical and horizontal directions. This absorbent underwear-type garment has the following characteristics: Absorbent subject; The waist structure comprises a front waist section and a rear waist section; and The engaging member has its outer end in the left-right direction fixed to the waist member in an inseparable manner, and its inner end in the left-right direction engaged with the non-skin side of the waist member in a detachable manner. The engaging components are respectively located on both sides of the waist component in the left-right direction. At both ends in the left-right direction, the front waist section and the rear waist section are joined together by a pair of side joints. The characteristic of this underwear-type absorbent item is that... The waist member has a waist elastic member that extends and retracts in the left-right direction and a separation portion for separating the waist member. The separating section has a plurality of cut portions and a plurality of non-cut portions arranged alternately in the vertical direction. When viewed along the thickness direction of the waist member, at least a portion of the separating portion overlaps with the engaging member. In the stretched state of the underwear-type absorbent article, The plurality of cut portions have an upper cut portion as the second cut portion from the top, a lower cut portion as the second cut portion from the bottom, and an intermediate cut portion located between the upper cut portion and the lower cut portion. The vertical length of the middle incision is longer than the vertical length of the upper incision and the vertical length of the lower incision.

2. The absorbent underwear-type garment according to claim 1, characterized in that, In the left-right direction, the inner end of the upper cut is located further inward than the inner end of the middle cut.

3. An absorbent underwear-type garment having intersecting vertical and horizontal directions. This absorbent underwear-type garment has the following characteristics: Absorbent subject; The waist structure comprises a front waist section and a rear waist section; and The engaging member has its outer end in the left-right direction fixed to the waist member in an inseparable manner, and its inner end in the left-right direction engaged with the non-skin side of the waist member in a detachable manner. The engaging components are respectively located on both sides of the waist component in the left-right direction. At both ends in the left-right direction, the front waist section and the rear waist section are joined together by a pair of side joints. The characteristic of this underwear-type absorbent item is that... The waist member has a waist elastic member that extends and retracts in the left-right direction and a separation portion for separating the waist member. The separating section has a plurality of cut portions and a plurality of non-cut portions arranged alternately in the vertical direction. When viewed along the thickness direction of the waist member, at least a portion of the separating portion overlaps with the engaging member. In the stretched state of the underwear-type absorbent article, The waist member has an upper intersection point, which is the intersection of the edge of the waist member along the waist opening and the imaginary line along the separation portion; and a lower intersection point, which is the intersection of the edge of the waist member along the leg opening and the imaginary line. It also has an upper region extending from the upper intersection point to a position 20mm below, i.e., on the inner side, from the upper intersection point; a lower region extending from the lower intersection point to a position 20mm above, i.e., on the inner side, from the lower intersection point; and an intermediate region located between the upper region and the lower region. The plurality of said cut portions have a central cut portion in the central region. The average length of the vertical direction of the plurality of cut portions that are included in the upper region but not located at the upper intersection is set as the upper average value. The average length of the vertical direction of the plurality of cut portions contained in the lower region but not located at the lower intersection is set as the lower average value. The length of the middle cut in the vertical direction is longer than the average value of the upper part and the average value of the lower part.

4. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, In the waistline component, a plurality of waistline elastic components are arranged at intervals in the vertical direction. In the stretched state of the underwear-type absorbent article, the middle cut-out portion overlaps with the plurality of waist elastic members in the vertical direction.

5. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, When viewed along the thickness direction, at least a portion of the intermediate cut overlaps with the engaging member.

6. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, In the stretched state of the underwear-type absorbent article, the vertical length of the middle cut portion is shorter than the vertical length of the locking member from the top to the bottom.

7. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, The engaging member has an engaging portion for engaging with the waist member. In the stretched state of the underwear-type absorbent article, the middle cut-out portion overlaps with the locking portion in the vertical direction.

8. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, In the stretched state of the underwear-type absorbent article, When the area from the upper end to the lower end of the engaging member is divided into four equal parts along the vertical direction, the two central regions are designated as the first central region. At least a portion of the intermediate cut overlaps with the first central region in the vertical direction.

9. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, In the stretched state of the underwear-type absorbent article, When the two central regions of the area extending from the upper end to the lower end of the side joint are divided into four equal parts along the vertical direction, the second central region is defined. At least a portion of the intermediate cut overlaps with the second central region in the vertical direction.

10. The absorbent underwear-type garment according to claim 4, characterized in that, In the stretched state of the underwear-type absorbent article, at least a portion of the multiple waist elastic members that overlap with the middle cut in the vertical direction are cut off at the middle cut in the horizontal direction.

11. The absorbent underwear-type article according to claim 10, characterized in that, In the stretched state of the underwear-type absorbent article, The waist elastic member, which overlaps with one of the cut portions other than the intermediate cut portion in the vertical direction, spans the cut portion in the left-right direction. The waist elastic member, which overlaps with another cut in the vertical direction, is cut off in the horizontal direction at that cut.

12. The absorbent underwear-type article according to claim 1 or 3, characterized in that, The waist component has a high-density portion that is denser than its surroundings. The high-density portion is located on both sides of the separation portion in the left-right direction.

13. The absorbent underwear-type garment according to claim 1 or 3, characterized in that, On the inner side in the left-right direction, compared to the separated portion In the waist component, the first piece, the second piece, and the third piece are stacked together. The waist elastic member is installed between the first piece and the second piece. The second piece and the third piece are bonded together using an adhesive.

14. The absorbent underwear-type article according to claim 1 or 3, characterized in that, During packaging, the two ends of the waist member in the left-right direction are folded inward at the folds extending in the up-down direction. The separating portion is located between the folded portion and the side joining portion in the left-right direction.

15. The absorbent underwear-type article according to claim 1 or 3, characterized in that, The separating portions are respectively located on both sides of the waist member in the left-right direction. In the separation portion on one side of the left-right direction and the separation portion on the other side of the left-right direction, the maximum length of the opening of the middle cut portion is different in the direction orthogonal to the separation portion.

16. The absorbent underwear-type article according to claim 1 or 3, characterized in that, The separating portions are respectively located on both sides of the waist member in the left-right direction. In the stretched state of the underwear-type absorbent article, the upper end of the middle cut portion and the upper end of the engaging member located on the upper side of the extension line along the vertical direction in the separation portion on one side in the left-right direction and the other side in the separation portion in the left-right direction have different lengths in the vertical direction.

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