WO2022004790A1 - Underpants-type absorbent article - Google Patents

Abstract

An underpants-type absorbent article (1) has: an absorbent body (10); a waist member (20) provided with a front waist part (20f) and a back waist part (20b); and an attachment member (30) that has a base end joined to the waist member (20) and has an attachment part (32) on the tip side. The front waist part (20f) is joined to the back waist part (20b). When the attachment part (32) is attached to the front waist part (20f), the lower end (30ebn) of the side edge (30eb) on the base end side of the attachment member (30) is located below the lower end (20fen) of the side edge (20fe) of the front waist part (20f), and a portion of the lower edge (20feg) of the front waist part (20f) and a portion of the lower edge (30ge) of the attachment member (30) partially define a leg opening (1b).

Description

Pants type absorbent article

The present invention relates to a pants-type absorbent article.

Conventionally, in absorbent articles such as pants-type (shorts-type) disposable diapers, the front waist circumference and the rear waist circumference are joined by joints formed at both ends in the lateral direction, but walking or the like is performed. In order to reduce the discomfort at the time, it is often designed so that the length of the waistline member in the vertical direction is the shortest at the position of the joint and the shape is close to that of shorts. For example, in Patent Document 1, engaging members provided on the ventral and dorsal waist circumferences of the absorption pad are engaged and attached to the engaging portions provided on the ventral and dorsal sides of the waistband. Discloses a wearable absorbent article. Further, in Patent Document 2, the portion of the leg circumference opening that penetrates most into the waist circumference opening side is not the position of the joint formed at both lateral ends of the waist circumference portion, but the position close to the absorber in the lateral direction. The absorbent article provided in is disclosed.

Japanese Unexamined Patent Publication No. 2012-29814 Republished patent WO2008 / 06608

When walking or the like while wearing an absorbent product having the configurations as in Patent Documents 1 and 2, the lower edge portion of the front waist circumference portion toward the inseam from the lower end of the joint portion for joining the front and rear waist circumference members (that is, that is). The front leg opening) is the part where the thickest part of the wearer's thigh is rubbed and the force is applied. As a result, the front waist circumference portion is pulled and extended in the left-right direction, and the force is applied to the joint portion, so that the waist circumference member is stretched and a feeling of strangeness may occur around the thigh portion. However, if the length of the waistline member in the vertical direction is made shorter in order to reduce rubbing against the thigh, the wearer's anxiety is likely to be aroused and the wearer may be easily torn.

Further, when the portion that penetrates most into the waist opening side is set to a position other than the position of the above-mentioned joint portion as in the absorbent article of Patent Document 2, only the shape of the cut, that is, the portion that penetrates most is set at the time of manufacturing. If you try to eliminate the problem of narrowing the line in the vertical direction and then expanding it in the vertical direction toward the joint by just cutting, the part that has spread near the joint is less likely to be line-tensioned, so the line is orthogonal. There was a risk that it would be easy to turn over in the direction.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pants-type absorbent article that does not easily turn over or feel uncomfortable around the thigh of the wearer when worn. To do.

An absorbent main body having a vertical direction, a horizontal direction, and a front-rear direction intersecting each other, and a waist-circling member having a front waist circumference portion and a rear waist-circling portion arranged so as to overlap the absorbent main body in the front-rear direction. A pants-type absorbent article having an engaging member whose base end side is joined to the waist circumference member and having an engaging portion on the tip end side, and to which the front waist circumference portion and the rear waist circumference portion are joined. In a state where the engaging portion is engaged with the front waist circumference portion, the lower end of the side edge of the engaging member on the base end side is located below the lower end of the side end of the front waist circumference portion. It is a pants-type absorbent article characterized in that a part of the lower edge of the front waist circumference portion and a part of the lower edge of the engaging member partition a part of the leg circumference opening.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a pants-type absorbent article that does not easily turn over or feel uncomfortable around the thigh of the wearer when worn.

It is a schematic perspective view of the napkin 1 which concerns on this embodiment. It is a top view of the unfolded and stretched napkin 1 seen from the skin side in the thickness direction. FIG. 2 is a schematic cross-sectional view taken along the line AA of FIG. 4A and 4B are diagrams illustrating an operation of separating the waistline member 20 of the napkin 1 into a front waistline portion 20f and a rear waistline portion 20b. It is a developed plan view of the napkin 1 in a state where the waistline member 20 is separated along the separation portions 25 on both sides in the left-right direction. It is an enlarged view of a part of a napkin 1 in a natural state. It is a simplified view of the lower part of the tab 30 shown in FIG. It is a schematic plan view which opened the tab 30 in the product state to the outside in the left-right direction, and saw the napkin 1 in the expanded and extended state from the skin side. It is a top view which shows the state which made the napkin 1 in the tape type state into a pants type again and extended.

The description of this specification and the accompanying drawings will clarify at least the following matters.
An absorbent main body having a vertical direction, a horizontal direction, and a front-rear direction intersecting each other, and a waist-circling member having a front waist circumference portion and a rear waist-circling portion arranged so as to overlap the absorbent main body in the front-rear direction. A pants-type absorbent article having an engaging member whose base end side is joined to the waist circumference member and having an engaging portion on the tip end side, and to which the front waist circumference portion and the rear waist circumference portion are joined. In a state where the engaging portion is engaged with the front waist circumference portion, the lower end of the side edge of the engaging member on the base end side is located below the lower end of the side end of the front waist circumference portion. It is a pants-type absorbent article characterized in that a part of the lower edge of the front waist circumference portion and a part of the lower edge of the engaging member partition a part of the leg circumference opening.

According to such a pants-type absorbent article, a part of the lower edge of the engaging member divides a part of the leg circumference opening, so that the lower end of the side end of the front waist circumference portion of the engaging member is formed. The portion protruding downward is easy to follow the thigh. Normally, when the lower edge of the front waist circumference hits the thigh during walking, the front waist circumference is pulled in the left-right direction, which tends to cause turning or discomfort. Since the portion protruding downward is a free end whose base end side is joined to the waist circumference member and whose tip end side is not joined to the waist circumference member, the tension is lower than that of the waist circumference member. Therefore, even if the thigh touches such a protruding portion, a feeling of strangeness is unlikely to occur. In addition, the presence of the engaging member can give the wearer a sense of security even if the length of the front waist circumference portion in the vertical direction is shortened, and further, it is possible to prevent the front waist circumference portion from being torn.

In such a pants-type absorbent article, in the engaged state, the engaging member has a protruding portion protruding downward in the vertical direction from the lower edge of the front waist circumference portion, and said. It is desirable that the side end portion of the protruding portion on the base end side is joined to the rear waist circumference portion.

According to such a pants-type absorbent article, even if the protruding portion of the engaging member hits the thigh when worn, one side end portion (side end portion on the proximal end side) of the protruding portion is joined to the rear waist circumference portion. Because it is made, it can be pressed firmly and it is difficult to turn it over. Further, since the joined portion has high rigidity, it is possible to prevent it from being turned over even if the joined portion is provided with a protruding portion.

In such a pants-type absorbent article, the engaging member is arranged on the non-skin side of the front waist circumference portion, and in the engaged state, the upper edge of the front waist circumference portion is a part of the waist circumference opening. It is desirable that the upper edge of the engaging member is located below the upper edge of the front waist circumference portion.

According to such a pants-type absorbent article, if the engaging member protrudes from the edge of the waist circumference opening, the protruding portion may hit the skin and give a sense of discomfort. By arranging it on the skin surface side and below the upper edge, it is possible to prevent such a feeling of strangeness.

The pants-type absorbent article has a longitudinal direction and a left-right direction in a state where the engaging member is opened to the outside in the left-right direction and the pants-type absorbent article is extended and unfolded, and the absorbability. The length of the girth member in the longitudinal direction at the center position in the left-right direction between the one side end of the main body in the left-right direction and the side end of the girth member in the left-right direction. It is desirable that the length of the girth member in the longitudinal direction on the side end side of the absorbent body is longer than that of the central position.

According to such a pants-type absorbent article, the thigh can be easily moved when worn, and the feeling of discomfort can be reduced. In addition, by increasing the length of the absorbent body side, it is possible to prevent the inguinal region from being exposed and reduce the anxiety of leakage.

In such a pants-type absorbent article, in the engaged state, the engaging member has a protruding portion protruding downward in the vertical direction from the lower edge of the front waist circumference portion, and said. It is desirable that the length of the protruding portion in the vertical direction is the longest at the side end portion of the engaging member on the proximal end side.

According to such a pants-type absorbent article, the length of the waistline member in the vertical direction becomes longer toward the center (inside) in the left-right direction, that is, the wearer's thigh gradually becomes thinner. It is preferable that the number of protrusions decreases toward the inside in the left-right direction because the protrusion becomes longer toward. This makes it easier for the protrusion to follow the thigh. Further, due to the structure of the protruding portion, the outer shape can be made to look beautiful.

In such a pants-type absorbent article, in a state before wearing, the waist circumference member is provided on both sides of the front waist circumference portion in the left-right direction, and the portion including at least the central portion of the front waist circumference portion and the rear waist circumference portion. A pair of separating portions for separating from the portion including at least the central portion thereof are provided, and the engaging member covers the non-skin side of the front waist circumference portion and at least a part of the separating portion. It is desirable that the upper end of the separating portion is located above the upper end of the engaging member.

According to such a pants-type absorbent article, it is possible to make it easier for the wearer to determine at what position the front waistline portion should be torn by being able to visually recognize the separated portion before mounting.

In such a pants-type absorbent article, at least a part of the lower edge of the engaging member has a curved portion, and in the engaged state, the curved portion is in the left-right direction. It is desirable that it extends from the outside to the inside in the left-right direction and the upper side in the up-down direction.

According to such a pants-type absorbent article, when the engaging member is pulled inward in the left-right direction and engaged with the front waist circumference portion, the curved portion of the lower edge of the engaging member is inside in the left-right direction. Moreover, since it extends upward, the force for pulling the engaging member is easily transmitted in the same direction (inner and upper in the left-right direction). This makes it easier to pull up in the same direction. Further, by having such a curved shape, it is possible to make the outer shape of the pants-type absorbent article look beautiful.

In such a pants-type absorbent article, the rear waist circumference portion is provided with a rear side leg circumference elastic member along the lower edge portion in the vertical direction, and the rear leg circumference elastic member is the said. It extends from the inside in the left-right direction along the rear leg circumference toward the outside and the upper side in the left-right direction, and includes the waist circumference member along the separation portion and at least the central portion of the front waist circumference portion. In a state of being separated into a portion and a portion including at least a central portion of the rear waist circumference portion, the engaging member is located on both sides of the rear waist circumference portion in the left-right direction, and the engaging member is deployed in the left-right direction. It is desirable that the curved portion of the lower edge of the engaging member extends from the inner side in the left-right direction to the outer side and the upper side in the left-right direction.

According to such a pants-type absorbent article, after separation, the engaging member is pulled to engage with the front waist circumference portion, but the extending direction of the rear leg circumference elastic member and the curved portion of the engaging member are Since the extending direction is the same, the force that pulls the engaging member is easily interlocked with the elastic member around the rear leg. Thereby, the fit can be improved.

In such a pants-type absorbent article, the engaging member is arranged on the non-skin side of the front waist circumference portion, and at least a part of the lower edge of the engaging member has a curved portion. In the engaged state, the lower edge of the engaging member has an inflection point in which the curved portion changes from a state in which the curved portion is convex upward to a state in which the curved portion is convex downward. It is desirable that the inflection point is located above the lower end of the front waist circumference portion.

According to such a pants-type absorbent article, when the inflection point is located below the lower end of the front waist circumference portion, the inflection point portion of the engaging member touches the thigh and feels uncomfortable. It may occur. However, since the inflection point is located above the lower end of the front waist circumference portion, it is possible to prevent the occurrence of such a feeling of strangeness.

In such a pants-type absorbent article, in a state where the engaging member is engaged after being extended, the lower edge of the engaging member intersects with the lower edge of the front waist circumference portion. The maximum value of the curvature of the curve along the lower edge of the engaging member having an intersection and extending from the intersection to the outside in the left-right direction and downward in the vertical direction is the inside in the left-right direction from the intersection. Moreover, it is desirable that it is larger than the maximum value of the curvature of the curve along the lower edge of the front waistline portion extending downward in the vertical direction.

According to such a pants-type absorbent article, it can be made to look like shorts. Further, even when the engaging member is engaged inward in the left-right direction, it is easy to secure the protruding portion of the engaging member with respect to the front waistline portion having a small curvature (that is, the curve is loose).

In such a pants-type absorbent article, in the engaged state, the engaging member has a protruding portion protruding downward in the vertical direction from the lower edge of the front waist circumference portion. In the left-right direction, it is desirable that at least a part of the engaging portion of the engaging member is located inside the inner end of the protruding portion.

According to such a pants-type absorbent article, the tip end side (the side where the engaging portion is provided) of the engaging member is a so-called free end, and the protruding portion extends to the inside in the left-right direction from the engaging portion. If it is provided, there is a risk that it will easily turn over when the force of the wearer's leg is applied to the protrusion. By configuring the engaging portion to be arranged inside the inner end of the protruding portion, it is possible to prevent the engagement portion from being easily turned over.

In such a pants-type absorbent article, the engaging member is arranged on the non-skin side of the front waist circumference portion, and in the engaged state, the engaging member is the lower side of the front waist circumference portion. It is desirable that the protrusion has a protrusion extending downward from the edge in the vertical direction, and the protrusion has a plurality of squeezed portions.

According to such a pants-type absorbent article, the protruding portion becomes more rigid due to the squeezed portion, and it is possible to prevent turning over.

=== Embodiment ===
Hereinafter, as an example of the absorbent article according to the present invention, a pants-type napkin 1 (hereinafter, also simply referred to as “napkin 1”) will be described. The absorbent articles include pants-type diapers and the like.

<Basic structure of napkin 1>
FIG. 1 is a schematic perspective view of a napkin 1 according to the present embodiment. FIG. 2 is a plan view of the unfolded and stretched napkin 1 as viewed from the skin side in the thickness direction. FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG.

The "stretched state" of the napkin 1 means the entire napkin 1 (product) by stretching each elastic member (for example, the absorbent body elastic member 50 described later, the skin side sheets 22, 23, etc.) included in the napkin 1. The whole) is stretched without wrinkles, specifically, the dimensions of each member constituting the napkin 1 (for example, the non-skin side sheet 21 and the skin side sheets 22, 23 described later) are the dimensions of the individual member. It refers to a state in which it is stretched to match or close to the same size. In the present embodiment, when comparing the absorbent main body 10 parts, the tab 30 is engaged (peeled) and pants-shaped (before being broken by the cut line 25). It is preferable to perform measurement and comparison at. In the tab 30, the measurement may be performed either after the napkin 1 is opened or in the disengaged state. Further, the above-mentioned measuring method is an example, and may be measured by another measuring method.

As shown in FIG. 1, the napkin 1 has a "vertical direction", a "horizontal direction", and a "front-back direction" that are orthogonal to each other. Further, as shown in FIG. 3, it has a "thickness direction" which is a direction in which each member is laminated. Of the vertical directions, the one that is on the waistline side of the wearer when the wearer is wearing the napkin 1 is referred to as the "upper side", and the one that is on the inseam side of the wearer is referred to as the "lower side". In the anterior-posterior direction, the one that is the ventral side of the wearer when worn is referred to as the "front side", and the one that is the dorsal side of the wearer is referred to as the "rear side". Further, in the thickness direction, the side in contact with the wearer's skin when the wearer wears the napkin 1 is referred to as the "skin side", and the opposite side thereof is referred to as the "non-skin side".

Further, the napkin 1 has a "longitudinal direction" and a "left-right direction" orthogonal to each other in the deployed state shown in FIG. The "longitudinal direction" is a direction along the vertical direction in the pants type, and the "left-right direction" is the same direction as the left-right direction in the pants type.

The napkin 1 of the present embodiment is arranged so as to overlap the liquid-absorbing absorbent body 10 that absorbs excrement such as menstrual blood and the absorbent body 10 in the front-rear direction, and when the napkin 1 is worn, it is placed around the wearer's waist. It includes a waist circumference member 20 to be arranged, and tabs 30 (corresponding to engaging members) provided on both sides of the waist circumference member 20 in the left-right direction.

(Absorptive body 10)
As shown in FIG. 2, the absorbent main body 10 has a substantially rectangular shape in a plan view along the vertical direction of the napkin 1 in the longitudinal direction. Then, as shown in FIG. 3, the absorbent main body 10 includes an absorbent core 11 along the longitudinal direction (vertical direction), a top sheet 12 arranged on the skin side of the absorbent core 11, and an absorbent core. It has a back sheet 13 arranged on the non-skin side of the eleven. However, the absorbent main body 10 may be provided with a seat member other than this. For example, a second sheet (not shown) may be provided between the top sheet 12 and the absorbent core 11 in the thickness direction.

The absorbent core 11 is a member that absorbs and retains a liquid such as menstrual blood, and is formed of, for example, a liquid absorbent fiber such as a pulp fiber mixed with a highly absorbent polymer (SAP). The outer peripheral surface of the absorbent core 11 may be covered with a liquid-permeable sheet member (core wrap sheet) such as tissue paper or non-woven fabric.

The top sheet 12 is a liquid-permeable sheet member that can come into contact with the wearer's skin when worn, and is formed of, for example, a hydrophilic air-through non-woven fabric, a spunbonded non-woven fabric, or the like.

The back sheet 13 is arranged on the non-skin side of the liquid impermeable sheet 13a for suppressing the leakage of liquid such as menstrual blood absorbed by the absorbent core 11 to the outside, and the liquid impermeable sheet 13a. It is formed of a two-layer structure including the hydrophobic sheet 13b. As the liquid impermeable sheet 13a, for example, a resin film or the like is used, and as the hydrophobic sheet 13b, for example, a flexible non-woven fabric or the like is used. However, the hydrophobic sheet 13b does not necessarily have to be provided, and the back sheet 13 may be formed only by the liquid impermeable sheet 13a.

Further, a leak-proof wall portion (not shown) may be provided on both sides of the absorbent main body 10 in the left-right direction. The leak-proof wall portion is a portion corresponding to a so-called three-dimensional gather, and when the napkin 1 is worn, the leak-proof wall portion stands up from both sides of the absorbent body 10 in the left-right direction to the wearer's skin side. It suppresses the leakage of excretory liquid such as menstrual blood to the outside of the absorbent body 10.

As shown in FIGS. 2 and 3, the absorbent main body 10 of the present embodiment is provided with a plurality of absorbent body elastic members 50 that expand and contract along the longitudinal direction (vertical direction). The absorbent body elastic member 50 is made of, for example, thread rubber, and is located on the non-skin side of the absorbent core 11 (between the liquid impermeable sheet 13a and the hydrophobic sheet 13b in FIG. 3) in the longitudinal direction (vertical direction). ) Is arranged in an extended state. In the napkin 1 of the present embodiment, five absorbent body elastic members 50 are provided at predetermined intervals in the left-right direction (see FIG. 2). The elasticity developed by the absorbent body elastic member 50 lifts the absorbent main body 10 toward the wearer's skin side, so that the absorbent main body 10 easily adheres to the wearer's inseam and excretes menstrual blood and the like. It can be made difficult to leak.

(Girth member 20)
The waistline member 20 is an exterior body composed of a plurality of seat members, and includes at least a non-skin side sheet 21 and skin side sheets 22 and 23 (see FIG. 3). Further, in the following description, in the longitudinal direction, the portion of the waist circumference member 20 on the front side (ventral side) of the central position CL is the front waist circumference portion 20f, and the portion on the rear side (dorsal side) of the center position CL is the rear side. It is also called a waist circumference portion 20b. The front waist circumference portion 20f is a portion that hits the ventral side of the wearer's body when the napkin 1 is worn. Further, the rear waist circumference portion 20b is a portion that hits the back side of the wearer's body when the napkin 1 is worn.

The non-skin side sheet 21 is a non-stretchable sheet member arranged on the most non-skin side of the napkin 1, and is formed of, for example, a spunbonded non-woven fabric or an SMS non-woven fabric. In the present embodiment, the non-skin side sheet 21 has a shape constricted inward in the left-right direction at the central portion in the longitudinal direction (the portion including the central position CL) as shown in the plan view of FIG. There is.

The skin side sheet 22 is a sheet member having elasticity laminated on the skin side of the non-skin side sheet 21 on the front side (ventral side) in the longitudinal direction. The skin side sheet 22 is formed of, for example, an elastic non-woven fabric. The "stretchable nonwoven fabric" is a nonwoven fabric containing elastic fibers having elasticity and elastic fibers having lower shrinkage than the elastic fibers, and having been subjected to an appropriate stretching treatment such as gear stretching. In the skin-side sheet 22 of the present embodiment, it is possible to use a polyurethane-based elastomer fiber, which is a kind of thermoplastic elastomer having elasticity, as the elastic fiber, and the thermoplastic resin having non-elasticity as the extensible fiber. It is possible to use polypropylene (PP) fiber, which is a polyolefin-based resin, which is one of the above.

The skin-side sheet 22 is joined to the non-skin-side sheet 21 by a plurality of scattered sheet joints (not shown), whereby the front waist circumference portion 20f is imparted with elasticity at least along the left-right direction. To. In the present embodiment, the sheet joint portion is formed by using a known bonding means such as ultrasonic welding.

The skin side sheet 23 is a sheet member having elasticity laminated on the skin side of the non-skin side sheet 21 on the rear side (dorsal side) in the longitudinal direction. The skin-side sheet 23 has the same configuration as the skin-side sheet 22. That is, the skin-side sheet 23 is formed of elastic non-woven fabric, and is joined to the non-skin-side sheet 21 by a plurality of scattered sheet joints (not shown). As a result, the rear waist circumference portion 20b is imparted with elasticity at least in the left-right direction.

As the seat member constituting the waist circumference member 20, other seat members other than the non-skin side sheet 21 and the skin side sheets 22 and 23 may be provided. For example, the waistline member 20 may have a three-layer structure in which a non-stretchable nonwoven fabric is arranged on the skin side of the stretchable skin- side sheets 22 and 23, and the stretchable nonwoven fabric is sandwiched between the non-woven fabrics. Further, in the case of a three-layer structure, the skin- side sheets 22 and 23 may be elastic films.

From the unfolded state shown in FIG. 2, the napkin 1 faces the skin side surface of the front waist circumference portion 20f and the skin side surface of the rear waist circumference portion 20b with the central position CL in the longitudinal direction (indicated by the alternate long and short dash line in FIG. 2) as the folding position. Fold it in half in the longitudinal direction (front-back direction). In the folded state, the left and right end portions 40f and 40f of the front waist circumference portion 20f and the left and right end portions 40b and 40b of the rear waist circumference portion 20b, which are overlapped in the front-rear direction, are provided with known joining means such as seal welding. It is joined using and the side joint 40 is formed. As a result, the waist member 20 (20f and 20b) folded in half is connected in a ring shape on the front side (ventral side) and the rear side (dorsal side), and one waist circumference opening 1a and a pair of legs as shown in FIG. A peripheral opening 1b is formed to form a pants-type napkin 1.

(Engaging member 30)
A pair of tabs 30 (corresponding to engaging members) are provided on both left and right sides of the napkin 1. The tab 30 has a base sheet 31 and an engaging portion 32.

The base material sheet 31 is a sheet member made of a non-woven fabric or the like, and one side in the left-right direction (corresponding to the base end side) is joined to the waist circumference member 20 by a tab joint portion 35, and the other side in the left-right direction (corresponding to the tip side). ) Is provided with an engaging portion 32 (see FIG. 2). In the present embodiment, the side joint portion 40 of the waist circumference member 20 described above also serves as the tab joint portion 35. That is, the front waist circumference portion 20f, the rear waist circumference portion 20b, and the tab 30 are integrally joined by the side joint portion 40. However, the tab joint portion 35 may be provided separately from the side joint portion 40. For example, the tab 30 may be joined by the tab joint portion 35 to a predetermined region other than the side joint portion 40 in the front waist circumference portion 20f or the rear waist circumference portion 20b. Further, the tab joint portion 35 may be formed by ultrasonic welding or the like like the side joint portion 40, or may be formed by using an adhesive such as a hot melt adhesive.

The engaging portion 32 is a locking member for detachably engaging the tab 30 with the waist circumference member 20, and is a predetermined region on the skin side surface of the tab 30 (the side opposite to the tab joint portion 35 in the left-right direction). It is provided in the (tip side) area). In the present embodiment, the engaging portion 32 is a hook-and-loop fastener made of, for example, polypropylene or the like, and provided with a plurality of locking hook members (locking protrusions (not shown)) on the surface on the skin side. By hooking these locking protrusions on the fibers (loops) of the non-woven fabric constituting the non-skin side sheet 21 provided on the outermost surface of the waist circumference member 20, the engaging portion 32 (tab 30) is not the waist circumference member 20. Detachably locked to the side of the skin. However, a hook member for locking may be provided on the waist circumference member 20 side, and a loop member for hooking the hook member may be provided on the engaging portion 32 side.

As shown in FIG. 1, in the pants-type napkin 1, the engaging portion 32 of the tab 30 is a region inside the tab joint portion 35 (side joint portion 40) in the left-right direction, and the front waist circumference portion 20f. Engaged on non-skin sides. In the present embodiment, the tab 30 is installed on the non-skin side of the waist member 20 (front waist member 20f), and the engaging portion 32 is provided on the skin side of the tab 30, but the tab 30 is the waist member 20. It is also possible to exemplify a configuration in which the engaging portion 32 is provided on the non-skin side of the tab 30 and is arranged on the skin side.

<About the attachment / detachment operation of napkin 1>
Subsequently, the attachment / detachment operation of the napkin 1 will be described. The napkin 1 is a pants type (shorts type) as shown in FIG. 1 in the initial state, and can be worn as a normal pants type absorbent article. Then, when the napkin 1 is removed from the body, the waist circumference member 20 formed in an annular shape along the waist circumference of the wearer is separated into a front waist circumference portion 20f and a rear waist circumference portion 20b to deploy the napkin 1. It can be removed by.

4A and 4B are diagrams illustrating an operation of separating the waistline member 20 of the napkin 1 into a front waistline portion 20f and a rear waistline portion 20b. FIG. 4A is a schematic cross-sectional view showing a state in which the napkin 1 in the pants-shaped state is viewed from the upper side (the side of the waist circumference opening 1a) in the vertical direction, and FIG. 4B is a front waist circumference portion 20f and a rear waist circumference portion in FIG. 4A. It is sectional drawing which shows the state which we separated from 20b.

In the pants-type napkin 1, the front waist circumference portion 20f and the rear waist circumference portion 20b are joined to each other by the side joint portions 40 and 40 provided at both ends in the left-right direction, whereby the annular waist circumference as shown in FIG. 4A is joined. The opening 1a is formed. A pair of tabs 30 are provided on both left and right sides of the waist circumference member 20, and the tabs 30 are engaged with the non-skin side surface of the front waist circumference portion 20f by the engaging portion 32.

Further, in FIG. 4A, a pair of separation portions 25 are provided on both sides of the front waist circumference portion 20f in the left-right direction. The separation portion 25 separates the waist circumference member 20 formed in an annular shape along the waist circumference of the wearer into a portion including at least the central portion of the front waist circumference portion 20f and a portion including at least the central portion of the rear waist circumference portion 20b. It is a portion provided for this purpose, and is provided in any of the regions from the side joint portion 40 to the portion where the engaging portion 32 is locked in the left-right direction. The separation portion 25 is, for example, a perforation along the vertical direction (see FIG. 2), and by tearing the waist circumference member 20 along the perforation, a portion including at least the central portion of the front waist circumference portion 20f can be easily obtained. And the portion including at least the central portion of the rear waist circumference portion 20b.

In the napkin 1, since the side joint portion 40 is formed by ultrasonic welding, the rigidity of the side joint portion 40 is higher than that in other regions of the waist circumference member 20. Therefore, it is possible to tear the waist member 20 along the inner end in the left-right direction of the side joint 40 having a large difference in rigidity in the waist member 20. In this case, since the inner end of the side joint portion 40 is the separation portion 25, the perforations and the like do not necessarily have to be provided.

The napkin 1 separated by the separation portion 25 into a portion including at least the central portion of the front waist circumference portion 20f and a portion including at least the central portion of the rear waist circumference portion 20b is in the state shown in FIG. 4B. That is, the separation portion 25 in FIG. 4A is separated into a separation end 25fe on the front waist circumference portion 20f side and a separation end 25be on the rear waist circumference portion 20b side. Further, in FIG. 4B, a pair of tabs 30 and 30 are joined to the rear waist circumference portion 20b via the tab joint portions 35 (side joint portions 40) on both sides in the left-right direction, and are provided on the tabs 30 and 30. The engaging portions 32 and 32 are respectively engaged with the front waist circumference portion 20f. As a result, the waistline member 20 is formed in an annular shape. When the napkin 1 in this state is removed from the wearer's body, the napkin 1 can be unfolded and easily removed by peeling the engaging portion 32 from the front waist circumference portion 20f.

FIG. 5 is a developed plan view of the napkin 1 in a state where the waistline member 20 is separated along the separation portions 25 on both sides in the left-right direction. The separated napkin 1 can be used as a so-called tape-type napkin in which tabs 30 having engaging portions 32 are provided on both left and right sides of the rear waist circumference portion 20b in the left-right direction. That is, the napkin 1 of the present embodiment can be used as both a pants type and a tape type.

The conventional pants-type napkin is difficult to put on and take off in a toilet or the like on the go where it is difficult for the wearer to take off his pants or shoes. However, in the case of the napkin 1 of the present embodiment, the separation portion The napkin 1 can be easily removed by separating the waist member 20 at 25. Further, since the waist member 20 of the new napkin 1 can be used as a tape type napkin by separating it in advance by the separating portion 25 and setting it in an unfolded state, it is difficult to take off pants and shoes. However, the attachment / detachment operation can be easily performed.

In such a pants-type napkin, in order to make it look more like underwear, the position where the length of the waist member 20 in the vertical direction is the shortest is usually set at the position of the side joint 40. Then, in the portion of the waist circumference member 20 from the vicinity of the lower end portion of the side joint portion 40 toward the inseam, the thickest portion of the thigh portion is rubbed when the wearer wears a pants-type napkin and walks. It is a part where force is applied. As a result, in particular, the front waist circumference portion 20f is pulled and stretched in the left-right direction, and the pulling force is applied to the side joint portion 40, so that the front waist circumference portion 20f is stretched and there is a possibility that a feeling of strangeness may occur around the thigh portion. However, if the length of the waistline member 20 in the vertical direction is made shorter from the vicinity of the lower end portion of the side joint portion 40 to the inseam in order to reduce rubbing against the thigh portion, the wearer's anxiety is likely to be agitated. There is also a risk that the shortened part will be easily torn.

On the other hand, the napkin 1 of the present embodiment has the following configuration. FIG. 6 is an enlarged view of a part of the napkin 1 in a natural state. Specifically, the packaged product (napkin 1) is taken out and unfolded, and the vicinity of one of the tabs 30 and 30 on both sides in the left-right direction is shown as viewed from the front side (ventral side). There is. Here, the engaging portion 32 of the tab 30 is engaged with the front waist circumference portion 20f. As shown in FIG. 6, the tab 30 in the present embodiment has a protruding portion 30T (a region shown by a diagonal line downward to the right in FIG. 6) protruding downward in the vertical direction from the lower edge 20feg of the front waist circumference portion 20f. Have. More specifically, the lower end 30ebn of the side edge 30eb on the side joint portion 40 side (base end side) of the tab 30 is located below the lower end 20fen of the side end 20fe of the front waist circumference portion 20f. .. As a result, on the front side (ventral side) of the napkin 1 of the present embodiment, a part of the lower edge 20feg of the front waist circumference portion 20f and a part of the lower edge 30ge of the tab 30 are one of the leg circumference openings 1b. The sections are partitioned (see FIGS. 1 and 6).

The tab 30 has a protrusion 30T that projects below the lower edge 20feg of the front waistline 20f, so that when worn, the protrusion 30T tends to follow the wearer's thighs and is like shorts. You can make a shape. When the lower edge 20feg of the front waist circumference 20f hits the thigh when the wearer walks, the elastic front waist circumference 20f is pulled in the left-right direction to cause discomfort, or the part where the thigh hits. Although the tab 30 may be turned over, the tension of the tab 30 is lower than that of the waist member 20f because the tab 30 is joined only on one side (base end side) in the left-right direction. Therefore, even if the thigh portion touches the protruding portion 30T of the tab 30, a sense of discomfort is unlikely to occur. Further, since the protruding portion 30T of the tab 30 is provided, the wearer can be relieved even if the length of the front waist circumference portion 20f located on the skin side of the tab 30 in the vertical direction is shortened. Further, by covering such a short portion with the tab 30, the front waist circumference portion 20f can be made difficult to tear.

Further, in the present embodiment, the front waist circumference portion 20f, the rear waist circumference portion 20b, and the tab 30 are integrally joined by the side joint portion 40. Since the protruding portion 30T protrudes below the lower edge 20feg of the front waist circumference portion 20f, the side end of the protruding portion 30T on the base end side (side joint portion 40 side) in the side joint portion 40. The portion 30Ta is joined to the rear waist circumference portion 20b. Therefore, even if the protruding portion 30T of the tab 30 hits the thigh when worn, the protruding portion 30T can be firmly pressed and it becomes difficult to turn over. Further, since the side joint portion 40 has high rigidity, it is possible to make it difficult for the protruding portion 30T to be turned over by providing a part of the protruding portion 30T in such a side joint portion 40. Further, for example, if the length of the side end fe of the front waist circumference portion 20f is shortened in the vertical direction and the engaging member 30 is not provided, the area covering the buttocks becomes smaller, so that the movement of the wearer may cause the movement. The hem line of the rear waist circumference 20b may slide up. However, as in the present embodiment, the side edge (side end) 30eb on the base end side of the protruding portion 30T and the side end of the rear waist circumference portion 20b are joined, so that the side end fe of the front waist circumference portion 20f is joined. Even if the length in the vertical direction is shortened, the rear waist circumference portion 20b can secure a large area to cover the buttocks for the length joined to the protruding portion 30T, and suppress the hem of the rear waist circumference portion 20b from slipping up. Can be done.

Further, as shown in FIG. 6, the upper edge 20fug of the front waist circumference portion 20f divides a part of the waist circumference opening 1a. Then, in a state where the engaging portion 32 is engaged with the front waist circumference portion 20f, the upper edge 30gu of the tab 30 is located below the upper edge 20fug of the front waist circumference portion 20f. If a part of the tab 30 protrudes from the edge of the waist opening 1a (upper edge 20fug), the protruding part may touch the wearer's abdomen and give a sense of discomfort. By arranging it on the non-skin surface side of the above and below the upper edge 20 fug, it is possible to prevent such a feeling of strangeness.

Further, in the state before wearing shown in FIG. 6, the tab 30 is arranged so as to cover at least a part of the separation portion 25, and the upper end 25up of the separation portion 25 is above the position of the upper end 30up of the tab 30. Is located in. In this way, by being able to visually recognize the separation portion 25 before mounting the napkin 1, it becomes easier for the wearer to determine at which position the front waist circumference portion 20f should be broken, and the operation of breaking along the separation portion 25 proceeds smoothly. It will be easier.

Further, as shown in FIG. 6, in the left-right direction, at least a part of the engaging portion 32 of the tab 30 is located inside the inner end 30 Tin of the protruding portion 30T. The tip end side (the side where the engaging portion 32 is provided) of the tab 30 is a so-called free end, and if the protruding portion 30T is provided to the inside in the left-right direction from the engaging portion 32, it is worn on the protruding portion 30T. There is a risk that it will easily turn over when the force of the person's legs is applied. By configuring the engaging portion 32 so as to be arranged inside the inner end 30 Tin in the left-right direction of the protruding portion 30T, it is possible to prevent the protrusion 30T from being easily turned over.

Further, in the napkin 1 of the present embodiment, it is preferable that the color of the non-skin side surface of the front waist circumference portion 20f (whole) and the color of the non-skin side surface of the tab 30 (whole) are similar colors. For example, in a nursing care diaper different from the napkin 1 of the present embodiment, a blue or green engaging portion is provided on a white tab, the color of the engaging portion can be seen through from the outside of the diaper, and the front waist circumference portion. The color of the non-skin side is often different between the diaper and the tab. Therefore, as in the napkin 1 of the present embodiment, by making the colors of the front waistline portion and the non-skin side surface of the tab similar to each other, the diaperiness is reduced and the appearance of the napkin 1 is improved.

However, in the above case, it is difficult for the wearer to grasp the position of the engaging portion 32 from the non-skin surface side of the napkin 1. Therefore, it is preferable that the tab 30 has a plurality of squeezed portions CP (see FIG. 6) in which the tab 30 is squeezed in the thickness direction in the region where the engaging portion 32 is arranged. By doing so, the position of the engaging portion 32 can be easily understood from the non-skin surface side of the tab 30, the tab 30 can be easily engaged with the front waist circumference portion 20f, and the wearability of the napkin 1 is improved. The squeezed portion 33 may be squeezed from the skin side of the tab 30 or squeezed from the non-skin side. In either case, the squeezed portion 33 is pressed from the outside (non-skin side) of the tab 30. It becomes visible.

Further, the engaging portion 32 is often bonded to the base sheet 31 constituting the tab 30 only with an adhesive, but the bonding strength between the tab 30 and the engaging portion 32 is further increased by the pressing portion CP. Therefore, the tab 30 can be reattached without the engaging portion 32 being detached from the tab 30. In addition, it is possible to prevent the tab 30 from coming off while wearing the napkin 1.

In addition, the similar color means that in the Munsell color system (100 hues), the hue is less than 5, the lightness is less than 1, or the saturation is less than 1, and the colors are the same.
Preferably, the color difference ΔE is less than 1. The color difference is measured as follows.
(1) Prepare an X-Rite eXact Standard (measurement diameter: 1.5 mm) manufactured by X-Rite.
^{(2) CIE L *} a ^* b ^* coordinates of the part to be measured (non-skin side surface of the front waist circumference 20f) of the sample are measured at 10 or more points by changing the position, and the average value (L1 ^* , a1 ^{*) of them is measured.} , B1 ^* ) is calculated.
^{(3) The CIE L *} a ^* b ^* coordinates of the part to be compared (the non-skin side of the tab 30) of the sample are measured at 10 or more points by changing the position, and their average values (L2 ^* , a2 ^* , b2) are measured. ^* ) Is calculated.
(4) calculating the color difference Delta] E from the above results (Delta] E = ^{[(L1 * -L2 *) 2 +} (a1 * -a2 *) 2 + (b1 * -b2 *) 2 ] ^1/2

FIG. 7 is a simplified view of the lower portion of the tab 30 shown in FIG. In FIG. 7, in order to make the shape of the tab 30 easy to understand, the configuration of the side joint portion 40 (tab joint portion 35) and the like is omitted. As shown in FIG. 7, at least a part of the lower edge 30ge of the tab 30 has a curved portion 30y. Specifically, the curved portion 30y shown in the figure extends from the outside in the left-right direction to the inside in the left-right direction and the upper side in the up-down direction in a state where the engaging portion 32 of the tab 30 is engaged with the waist circumference portion 20f. ing. The wearer engages the tab 30 with the front waist circumference portion 20f while pulling the tab 30 inward in the left-right direction, but the curved portion 30y of the lower edge 30ge of the tab 30 extends inward and upward in the left-right direction. , The force pulling the tab 30 is easily transmitted in the same direction (inner and upper in the left-right direction). This makes it easier to pull up in the same direction. Further, by having such a curved portion 30y, the outer shape of the napkin 1 can be made to look beautiful.

Further, in the present embodiment, the lower edge 30ge of the tab 30 has a further curved portion inside the curved portion 30y described above in the left-right direction. Specifically, the lower edge 30ge has an inflection point Q in which the curve changes from a state in which the curve is convex upward (curved portion 30y in FIG. 7) to a state in which the curve is convex downward. The point Q is located above the lower end (lower edge) 20feg of the front waist circumference portion 20f. Since the curve extending inward in the left-right direction from the inflection point Q is in a state of being convex downward, if the inflection point Q is located below the lower end (lower edge) 20feg of the front waist circumference portion 20f. , The portion of the inflection point Q and the portion inside in the left-right direction from the inflection point Q may touch the wearer's thigh, causing a sense of discomfort. However, when the inflection point Q is located above the lower end (lower edge) 20 feg, it is possible to prevent the occurrence of such a feeling of strangeness.

Further, as shown in FIG. 7, the tab 30 of the present embodiment has a plurality of squeezed portions CP in which the tab 30 is squeezed in the thickness direction at the peripheral portion. In FIG. 6 described above, the squeezed portion CP at the peripheral portion is omitted for convenience of explaining the configuration of the tab 30. The peripheral edge portion here is preferably a portion having a width about 3 mm inward from the peripheral edge of the tab 30. As shown in FIG. 7, in the present embodiment, the squeezed portion CP is formed in a dot shape along the outer peripheral shape of the tab 30, but even if it is formed in a linear shape, it is formed only in the protruding portion 30T. May be. By having a plurality of squeezed portions CP on the peripheral edge portion, the rigidity of the tab 30 is increased, and it becomes easier to grip. Further, since the protruding portion 30T has a plurality of squeezed portions CP, the rigidity of the protruding portion 30T is also increased, and it is possible to further prevent the protruding portion 30T from being turned over when worn.

FIG. 8 is a schematic plan view of the napkin 1 in the expanded and extended state with the tab 30 in the product state opened to the outside in the left-right direction as viewed from the skin side. As shown in FIG. 8, between the side end 10ea on one side in the left-right direction of the absorbent body 10 and the side end 40E on one side in the left-right direction of the girth member 20 (front girth portion 20f, rear girth portion 20b). The side end 10ea of the absorbent body 10 is closer to the length (Lf, Lb) in the longitudinal direction of the waist member 20 (front waist circumference 20f, rear waist circumference 20b) in the center position CB in the left-right direction than the center position CB. The length of the waist circumference member 20 (front waist circumference portion 20f, rear waist circumference portion 20b) in the longitudinal direction is longer. That is, it becomes longer toward the inseam side as compared with the length (Lf, Lb) at the central position CB. By having a configuration in which the waist circumference member 20 covers a large area toward the inseam and a small area covering the leg circumference toward both outer sides in the left-right direction, the wearer can easily move the thigh when wearing. Therefore, the feeling of strangeness can be reduced. Further, by increasing the length of the waistline member 20 on the absorbent body 10 side (inseam side) in the longitudinal direction, it is possible to prevent the inguinal region from being exposed and reduce the anxiety of leakage.

Further, in the protruding portion 30T of the tab 30, the length of the protruding portion 30T in the vertical direction is the longest in the side end portion 30e on the side joint portion 40 side (base end side) of the tab 30, and is in the left-right direction. The length in the vertical direction becomes shorter toward the inside (see FIG. 6). As shown in FIG. 8, the length of the waistline member 20 in the vertical direction becomes longer toward the center (inside) in the left-right direction, that is, the wearer's thigh gradually becomes thinner (that is, the wearer's thigh gradually becomes thinner (). Since the length (width) is widened toward the toe side), on the contrary, it is preferable that the amount of the protruding portion 30T protruding inward in the left-right direction is small (in the longitudinal direction). It is preferable that the length becomes shorter). By doing so, the protrusion 30T tends to follow the thigh. In addition, it is possible to bring it closer to the shape of shorts while making the outer shape look beautiful.

Further, returning to FIG. 2, the front waist circumference portion 20f is provided with a front side leg circumference elastic member 28 along the lower edge portion (that is, the contour of the leg circumference opening 1b) in the vertical direction. The front leg circumference elastic member 28 is an elastic member such as rubber thread, and is arranged in a state of being extended from one side in the left-right direction to the other side between the non-skin side sheet 21 and the skin side sheet 22 in the thickness direction. (See Fig. 2, Fig. 3, etc.). Similarly, the rear waist circumference portion 20b is provided with a rear side leg circumference elastic member 29 along the lower edge portion (that is, the contour of the leg circumference opening 1b) in the vertical direction. The elastic member 29 around the rear leg is an elastic member such as a rubber thread, and is in a state of being extended from one side to the other side in the left-right direction between the non-skin side sheet 21 and the skin side sheet 23 in the thickness direction. They are arranged (see Fig. 2, Fig. 3, etc.).

Then, in order to make the front leg elastic member 28 and the rear leg elastic member 29 follow the contour of the leg opening 1b, respectively, the front leg elastic member 28 and the rear leg elastic member 29 are made of the present. As in the embodiment, it is desirable to have curved portions 28cv, 28cv, 29cv, 29cv (FIG. 2) curved from the inside in the left-right direction to the outside and the upper side in the left-right direction, respectively.

By providing these leg circumference elastic members 28 and 29, elasticity is imparted along the leg circumference opening 1b of the napkin 1, and the leg circumference opening 1b can be easily fitted to the wearer's leg circumference. In particular, in the rear waist circumference portion 20b, the leg circumference opening 1b is likely to be lifted from the wearer's body (buttocks) or misaligned due to the influence of the protrusion of the wearer's buttocks and the movement of the legs by the wearer. Therefore, by providing the rear leg circumference elastic member 29 that expands and contracts along the leg circumference opening 1b, the fit of the rear waist circumference portion 20b is improved in the leg circumference on the buttocks side of the wearer, and the wearer feels uncomfortable or uncomfortable. Can be made less likely to occur. Further, since the side joint 40 has a portion overlapping with the rear leg elastic member 29 in the thickness direction, that is, the side joint 40 is the rear leg elastic member when viewed in the thickness direction. Since it intersects with 29, the elastic force of the curved portion 29cv of the elastic member 29 around the rear leg pulls the side joint 40 diagonally upward toward the outside in the left-right direction along the shape of the wearer's buttocks. Can be raised. As a result, a gap is less likely to occur between the joint portion and the crotch portion of the wearer, and leakage of excrement can be suppressed.

Then, after separating the waist circumference member 20 along the pair of separation portions 25 provided in the front waist circumference portion 20f with respect to such a rear side waist circumference elastic member 29, the tab 30 is attached to the non-skin of the front waist circumference portion 20f. When the operation of engaging with the side surface is performed, the following effects can be obtained. First, when the front waist circumference portion 20f is cut along the separation portion 25 before wearing, and the waist circumference member 20 is separated into a portion including at least the central portion of the front waist circumference portion 20f and a portion including at least the central portion of the rear waist circumference portion 20b. As shown in FIG. 5, the tabs 30 are located on both sides of the rear waist circumference portion 20b in the left-right direction. Then, as shown in FIG. 5, in a state where the tab 30 is expanded in the left-right direction while the napkin 1 is expanded and extended, the curved portion 30y of the lower edge 30ge of the tab 30 is inside in the left-right direction. Extends outward and upward in the left-right direction. That is, the extending direction of the curve of the curved portion 30y is the same as the bending direction of the curved portion 29cv of the rear leg around elastic member 29 (the direction from the inside in the left-right direction to the outside and the upper side in the left-right direction). .. As described above, since the bending direction of the curved portion 29cv of the rear leg circumference elastic member 29 and the extending direction of the curved portion 30y of the tab 30 are the same, the tab 30 is pulled to the front waist circumference portion 20f after separation. When engaging, the force that pulls the tab 30 is likely to be interlocked with the elastic member 29 around the rear leg. Since the force for adjusting the waist position by pulling the tab 30 is easily transmitted to the elastic member 29 around the rear leg, the rear waist circumference portion 20b is easily arranged at an appropriate position, and the fit can be improved. ..

The curved portions 28cv, 28cv, 29cv, 29cv of the front leg rotation elastic member 28 and the rear leg rotation elastic member 29 of the present embodiment are curved from the inside in the left-right direction to the outside and the upper side in the left-right direction. However, the present invention is not limited to this, and may be, for example, a linear shape extending in the same direction. That is, for example, the rear leg circumference elastic member 29 may extend along the rear leg circumference of the wearer.

FIG. 9 is a plan view showing a state in which the tape-shaped napkin 1 is again made into a pants-shaped shape and stretched. In the same 9, the unfolded and extended napkin 1 shown in FIG. 5 is folded in half at the center position CL in the longitudinal direction, and the pair of engaging portions 32 and 32 are locked to the front waist circumference portion 20f to form a pants type. It represents the state. In such an extended pants-type state, the napkin 1 has an intersection P where the lower edge 30ge of the tab 30 and the lower edge 20feg of the front waist circumference portion 20f intersect. Then, the lower edge 30ge of the tab 30 draws a curve extending outward in the left-right direction and downward in the vertical direction from the intersection P, and the lower edge 20feg of the front waist circumference portion 20f is inside in the left-right direction from the intersection P. Moreover, it draws a curve extending downward in the vertical direction. Comparing the curves of each lower edge (30ge, 20feg), the maximum value of the curve of the curve along the lower edge 30ge of the tab 30 is the curvature of the curve along the lower edge 20f of the front waist circumference 20f. Greater than the maximum. The curvature of the curve here represents the local degree of bending of the curve, and the larger the curvature, the tighter the curve (the curve is steeper), and the smaller the curvature, the looser the curve (the curve is loose). .. Further, since the curves drawn by the lower edges 30ge and 20feg do not have a constant curvature, comparison is made at the maximum value of each, that is, the part where the bending is the tightest. In the present embodiment, the maximum value of the curvature of the curve of the lower edge 30ge of the tab 30 is larger (that is, the curve of the lower edge 30ge of the tab 30 is tighter), so that when worn. You can get an appearance closer to shorts. Further, due to such a configuration, even if the tab 30 is engaged more inward in the left-right direction when worn, that is, even if it is engaged so as to fit a slimmer waistline, the curvature is smaller ( (The curve is loose) It becomes easy to secure the protruding portion 30T with respect to the lower edge 20feg of the front waist circumference portion 20f.

=== Other embodiments ===
The above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

In the above-described embodiment, the waistline member 20 is provided with elasticity in the left-right direction by using an elastic sheet such as a stretchable non-woven fabric as the skin- side sheets 22 and 23 constituting the waistline member 20. Other elastic members may be provided in 20. For example, as shown in FIG. 2, a waist elastic member 27 such as a thread rubber may be provided on the upper ends of the front waist circumference portion 20f and the rear waist circumference portion 20b so as to be expandable and contractible in the left-right direction. By providing such a waist circumference elastic member 27, the fit at the waist circumference opening 1a is further enhanced, and the misalignment of the waist circumference member 20 can be suppressed when the napkin 1 is worn.

In the above-described embodiment, the tabs 30 are provided on both sides of the waist circumference member 20 in the left-right direction, but they may be provided on only one side. Then, for example, by pulling the tab 30 provided on only one side at the time of use, the tab 30 can be easily torn along the inner end in the left-right direction of the side joint portion 40 having a large difference in rigidity in the front waist circumference portion 20f. It may be configured. As a result, it becomes a pants-type napkin that can be deployed only on one side when used. In this case, since the inner end in the left-right direction of the side joint portion 40 functions as the separation portion 25 of the present embodiment, the perforations and the like do not necessarily have to be provided.

1 Napkin (pants type absorbent article),
1a waist opening, 1b leg opening,
10 Absorbent body,
11 Absorbent core,
12 top sheet,
13 back sheet, 13a liquid impermeable sheet, 13b hydrophobic sheet,
20 Girth member,
20f front waistline, 20fe side end, 20f lower end,
20b Rear waistline,
20 feg lower edge 21 non-skin side sheet, 22 skin side sheet, 23 skin side sheet,
25 separation part, 25fe separation end, 25be separation end,
27 Girth elastic member,
28 Front leg elastic member, 28cv curved part,
29 Rear leg elastic member, 29cv curved part,
30 tabs (engagement members), 30e side ends, 30eb side edges,
30ebn bottom edge,
30ge lower edge, 30gu upper edge,
30y curved part, 30T protrusion,
31 base sheet, 32 engaging part, 35 tab joint,
40 side joints, 40f ends, 40b ends,
50 Absorbent elastic member,
CL center position, CP squeezing part,
P intersection, Q inflection,

Claims (12)

1. It has a vertical direction, a horizontal direction, and a front-back direction that intersect each other.
   Absorbent body and
   A girth member having a front girth portion and a rear girth portion, which is arranged so as to overlap the absorbent main body in the front-rear direction.
   It has an engaging member whose base end side is joined to the waist circumference member and which has an engaging portion on the tip end side.
   A pants-type absorbent article to which the front waist circumference portion and the rear waist circumference portion are joined.
   In a state where the engaging portion is engaged with the front waist circumference portion,
   The lower end of the side edge of the engaging member on the base end side is located below the lower end of the side end of the front waist circumference portion, and a part of the lower edge of the front waist circumference portion and the engagement. A pants-type absorbent article characterized in that a part of the lower edge of the member partitions a part of the leg circumference opening.
2. The pants-type absorbent article according to claim 1.
   In the engaged state,
   The engaging member has a protruding portion that protrudes downward in the vertical direction from the lower edge of the front waist circumference portion.
   A pants-type absorbent article characterized in that the side end portion of the protruding portion on the base end side is joined to the rear waist circumference portion.
3. The pants-type absorbent article according to claim 1 or 2.
   The engaging member is arranged on the non-skin side of the front waist circumference portion, and is arranged.
   In the engaged state,
   The upper edge of the anterior girth portion defines a part of the girth opening.
   A pants-type absorbent article characterized in that the upper edge of the engaging member is located below the upper edge of the front waist circumference portion.
4. The pants-type absorbent article according to any one of claims 1 to 3.
   With the engaging member opened outward in the left-right direction and the pants-type absorbent article extended and unfolded, it has a longitudinal direction and a left-right direction.
   From the longitudinal length of the girth member at the center position in the left-right direction between the one-sided end of the absorbent body in the left-right direction and the one-side side end of the girth member in the left-right direction. Also, the pants-type absorbent article, characterized in that the length of the waistline member on the side end side of the absorbent body is longer in the longitudinal direction than the central position.
5. The pants-type absorbent article according to claim 4.
   In the engaged state,
   The engaging member has a protruding portion that protrudes downward in the vertical direction from the lower edge of the front waist circumference portion.
   A pants-type absorbent article characterized in that the length of the protruding portion in the vertical direction is the longest at the side end portion of the engaging member on the proximal end side.
6. The pants-type absorbent article according to any one of claims 1 to 5.
   In the state before wearing
   On both sides of the front waist circumference portion in the left-right direction, a pair of separations for separating the waist circumference member into a portion including at least the central portion of the front waist circumference portion and a portion including at least the central portion of the rear waist circumference portion. There is a part,
   The engaging member is arranged so as to cover at least a part of the separated portion on the non-skin side of the front waist circumference portion.
   A pants-type absorbent article characterized in that the upper end of the separating portion is located above the upper end of the engaging member.
7. The pants-type absorbent article according to claim 6.
   At least a portion of the lower edge of the engaging member has a curved portion and has a curved portion.
   In the engaged state,
   The pants-type absorbent article, characterized in that the curved portion extends from the outside in the left-right direction to the inside in the left-right direction and the upper side in the up-down direction.
8. The pants-type absorbent article according to claim 6 or 7.
   The rear waist circumference portion is provided with a rear side leg rotation elastic member along the lower edge portion in the vertical direction, and the rear leg rotation elastic member is from the inside in the left-right direction to the left-right direction. Extending outward and upward along the rear leg circumference,
   In a state where the waistline member is separated into a portion including at least the central portion of the front waistline portion and a portion including at least the central portion of the rear waistline portion along the separation portion, the engaging member is the rear waistline portion. Located on both sides of the part in the left-right direction,
   In a state where the engaging member is deployed in the left-right direction, the curved portion of the lower edge of the engaging member extends from the inside in the left-right direction to the outside and the upper side in the left-right direction. Pants-type absorbent article characterized by being present.
9. The pants-type absorbent article according to any one of claims 1 to 8.
   The engaging member is arranged on the non-skin side of the front waist circumference portion, and is arranged.
   At least a portion of the lower edge of the engaging member has a curved portion and has a curved portion.
   In the engaged state,
   The lower edge of the engaging member has an inflection point that changes from a state in which the curved portion is convex upward to a state in which the curved portion is convex downward.
   The pants-type absorbent article characterized in that the inflection point is located above the lower end of the front waist circumference portion.
10. The pants-type absorbent article according to any one of claims 1 to 9.
    After being extended, in a state where the engaging member is engaged,
    It has an intersection point where the lower edge of the engaging member and the lower edge of the front waist circumference portion intersect.
    The maximum value of the curvature of the curve along the lower edge of the engaging member extending from the intersection to the outside in the left-right direction and to the bottom in the up-down direction is the inside in the left-right direction from the intersection and the up-down direction. A pants-type absorbent article characterized in that it is larger than the maximum value of the curvature of the curve along the lower edge of the front waistline portion extending downward.
11. The pants-type absorbent article according to any one of claims 1 to 10.
    In the engaged state,
    The engaging member has a protruding portion that protrudes downward in the vertical direction from the lower edge of the front waist circumference portion.
    A pants-type absorbent article characterized in that at least a part of the engaging portion of the engaging member is located inside the inner end of the protruding portion in the left-right direction.
12. The pants-type absorbent article according to any one of claims 1 to 11.
    The engaging member is arranged on the non-skin side of the front waist circumference portion, and is arranged.
    In the engaged state,
    The engaging member has a protruding portion that protrudes downward in the vertical direction from the lower edge of the front waist circumference portion.
    The pants-type absorbent article, wherein the protruding portion has a plurality of squeezed portions.
    
    

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