JP2021185972A - Absorbent article - Google Patents

Abstract

To provide an absorbent article that can change a pants-type absorbent article into a tape type smoothly and properly.SOLUTION: An absorbent article has: an annular girth member (50) extending in the width direction along a wearer's girth direction; a flap member (60) arranged in an outer surface side of the girth member; a fastening member (62) arranged in at least one of the girth member and the flap member; and a bonding part (70) extending from one end to the other end of the multilayer region in a longitudinal direction having the girth member and the flap member being welded and being perpendicular to the width direction, in a laminated region where the girth member and the flap member are laminated. The girth member has a first region (R1) extending in one side of the width direction from the bonding part, and a second region (R2) extending in the other side and connected with the first region. While the first region is separated from the bonding part, the flap member is connected with the second region. The fastening member is capable of fastening a connection region where the flap member is connected with the second region, and the first region.SELECTED DRAWING: Figure 4

Description

The present invention relates to an absorbent article that can be used as both a tape-type absorbent article and a pants-type absorbent article.

Patent Document 1 provides an absorbent article that can be used as both a tape-type absorbent article and a pants-type absorbent article. In the absorbent article of Patent Document 1, a portion in which a fastening piece having a first waist circumference member, a second waist circumference member, and a fastening member is overlapped is joined by a joint portion, and the first waist circumference is inside the joint portion. A cutting line is provided for separating the member from the second waist circumference member. In the state before the first waist circumference member is separated, the first waist circumference member and the second waist circumference member are connected in an annular shape and function as a pants-type absorbent article. On the other hand, in the state after the first waist circumference member is separated, the first waist circumference member and the second waist circumference member can be fastened via the fastening member of the fastening piece, and function as a tape-type absorbent article. do.

Japanese Unexamined Patent Publication No. 5-317356

However, the absorbent article of Patent Document 1 has the following problems.
When the absorbent article of Patent Document 1 is used as a tape-type absorbent article, the first waistline member is cut through a cutting line. At this time, if the joint portion for joining the overlapped portion and the cutting line are arranged close to each other, the positions of the two are close to each other, so that the joint portion partially overlaps due to a manufacturing error or the like, and the joint portion is intended via the cutting line. There was a risk that the pants-type absorbent article could not be properly switched to the tape-type absorbent article because it was cut without cutting or the joint part overlapped with the cutting line and could not be cut smoothly. .. Further, when the joint portion and the cutting line are arranged apart from each other, even if a force is applied to the joint portion via a fastening piece or the like, the force is not applied to the cutting line, and the pants-type absorbent article is smoothly taped. There was a risk that it would not be possible to switch to a type of absorbent article.

Further, the cutting line of the absorbent article of Patent Document 1 is formed by intermittently provided cuts or holes. Therefore, when a force pulled in the width direction is applied to the first waistline member when attaching a pants-type absorbent article, the pants are unintentionally cut through the cutting line, and the pants are cut at an appropriate timing. There was a risk that the type absorbent article could not be switched to the tape type absorbent article.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article capable of smoothly and appropriately switching a pants-type absorbent article to a tape-type absorbent article. ..

The absorbent article according to one embodiment includes an annular waist member extending in the width direction along the waistline direction of the wearer, a flap member arranged on the outer surface side of the waistline member, and at least one of the waistline member and the flap member. It has a fastening member arranged in the above, and a joint portion to which the waist circumference member and the flap member are welded in a laminated region in which the waist circumference member and the flap member are laminated. The waistline member has a first region extending from the joint portion to one side in the width direction and a second region extending from the joint portion to the other side in the width direction and connecting to the first region via the joint portion. And have. The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction. The first region is separable from the joint via the joint. In a state where the first region and the joint portion are separated, the flap member and the second region are connected to each other via the joint portion. The fastening member can fasten the flap member, the connecting region in which the second region is connected, and the first region.

The absorbent article according to the other aspect includes an annular waist member extending in the width direction along the waistline direction of the wearer, a flap member arranged on the outer surface side of the waistline member, and at least one of the waistline member and the flap member. It has a fastening member arranged in the above, and a joint portion to which the waist circumference member and the flap member are welded in a laminated region in which the waist circumference member and the flap member are laminated. The waistline member has a first region extending from the joint portion to one side in the width direction and a second region extending from the joint portion to the other side in the width direction and connecting to the first region via the joint portion. And have. The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction. By pulling the flap member in the width direction, the first region can be separated from the joint portion via the joint portion in a state where the joint portion and the second region are connected to each other. The connecting region in which the flap member and the second region are connected and the first region can be fastened by the fastening member.

FIG. 1 is a perspective view of the absorbent article as viewed from the front side. FIG. 2 is a diagram showing a first separated state of the absorbent article shown in FIG. FIG. 3 is a diagram showing a second separated state of the absorbent article shown in FIG. FIG. 4 is a diagram for explaining a separation operation of the absorbent article. FIG. 5 is a diagram showing a joint portion according to a modified example.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.
The absorbent article according to one embodiment includes an annular waist member extending in the width direction along the waistline direction of the wearer, a flap member arranged on the outer surface side of the waistline member, and at least one of the waistline member and the flap member. It has a fastening member arranged in the above, and a joint portion to which the waist circumference member and the flap member are welded in a laminated region in which the waist circumference member and the flap member are laminated. The waistline member has a first region extending from the joint portion to one side in the width direction and a second region extending from the joint portion to the other side in the width direction and connecting to the first region via the joint portion. And have. The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction. The first region is separable from the joint via the joint. In a state where the first region and the joint portion are separated, the flap member and the second region are connected to each other via the joint portion. The fastening member can fasten the flap member, the connecting region in which the second region is connected, and the first region. According to this aspect, the first region of the waist circumference member and the joint portion can be separated via the joint portion. A joint portion is provided from one end to the other end in the longitudinal direction of the laminated region, and the first region and the joint portion can be separated over the entire longitudinal direction of the laminated region via the joint portion. By separating the first region from the joint portion, the first region is also separated from the second region, and the shape of the waist circumference member becomes a developed shape that is partially cut off from a continuous annular shape. In a state where the first region and the joint portion are separated, the flap member and the second region are connected to each other through the joint portion, and the fastening member is a joint region in which the flap member and the second region are connected to each other. Since it is possible to fasten one region, the joint region and the first region can be fastened by fastening the fastening member with the waistline member deployed, and the wearer can wear an absorbent article as a tape type. Can be attached to. Since it is possible to separate through the joint without separately providing a cutting line for dividing the waistline member, the pants-type absorbent article can be used while suppressing the problem that the joint is unintentionally separated by the cutting line. It is possible to appropriately switch to a tape-type absorbent article.

According to a preferred embodiment, the separation strength between the first region and the joint portion is lower than the separation strength between the second region and the joint portion. According to this aspect, the separation strength between the first region and the joint portion is low, and the first region and the joint portion can be easily separated. On the other hand, since the separation strength between the second region and the joint portion is high, it is difficult to separate the second region and the joint portion. Therefore, a state in which the second region and the joint portion are joined and the first region and the joint portion are separated is realized.

According to a preferred embodiment, the first edge of the joint on the first region side is inclined with respect to the longitudinal direction. When separating the first region and the joint portion, the joint portion can be pulled in the width direction via the flap member to separate the joint portion. At this time, if the first end side of the joint portion is in a form parallel to the longitudinal direction, a force for separating the joint portion may be applied to the entire joint portion, and it may be difficult to separate the joint portion. However, in the form in which the first end side of the joint portion is inclined in the longitudinal direction, a force is applied to a part of the joint portion without applying a force to separate the joint portion as a whole. Therefore, the joint can be locally separated and the separated portion can be gradually expanded. Therefore, the first region and the joint can be separated more smoothly.

According to a preferred embodiment, the first end of the joint has a vertex protruding toward the first region and a side extending from the vertex to the second region. According to this aspect, a force for separating the first region and the joint can be applied to the apex to separate the joint at the apex, and the separated portion can be gradually expanded. Therefore, the joint portion and the first region can be separated more smoothly.

According to a preferred embodiment, the apex is located at the center of the first edge in the longitudinal direction. The sides extend from the apex toward both outer sides of the longitudinal direction, respectively. According to this aspect, when a force for separating along the width direction is applied, the joint portion and the first region are separated at the apex at the center in the longitudinal direction of the first end side, and the separated portion is separated in the longitudinal direction. Can be spread on both sides of.

According to a preferred embodiment, the vertices are provided at both ends of the first end side in the longitudinal direction. The side sides extend from the apex toward the inside in the longitudinal direction. According to this aspect, when a force for separating diagonally with respect to the width direction is applied instead of being parallel to the width direction, vertices are provided at each end edge in the longitudinal direction of the first end side. , It is easy to apply a force to any of the vertices, and the part separated at the apex can be gradually expanded. Further, as for the end edge on the side separated from the joint portion of the first region (the side of the boundary separated from the joint portion), the end edge in the longitudinal direction does not protrude inward in the width direction, and the first region is on the wearer's abdomen. It is possible to suppress the feeling of strangeness that the longitudinal edge of the edge of the skin hits the skin.

According to a preferred embodiment, the joint has a first end side of the joint portion on the first region side and a second end side of the joint portion on the second region side. The total length of the joint in the longitudinal direction at the first end is longer than the total length of the junction in the longitudinal direction at the second end. The material of the portion where the joint portion is formed by welding is formed into a film, and it becomes easy to separate the joint portion as a boundary. Since the total length of the first end side in the longitudinal direction is long, the joint portion and the first region can be easily separated through the first end side, and the flap member can be smoothly separated from the first region.

According to a preferred embodiment, the first joint is continuous in the longitudinal direction of the joint. According to this aspect, since the first joint portion is continuous in the longitudinal direction of the joint portion, the end side on the first region side is continuously separated from the first region.

According to a preferred embodiment, the fastening member is arranged on the flap member, and the fastening member is more than the first region in a state before the first region and the joint portion are separated from each other. It is arranged on the non-skin surface side facing the first region. According to this aspect, in the state before separation, the fastening member is arranged facing the first region on the non-skin surface side of the first region. Therefore, in a state where the first region and the joint portion are separated, that is, when the flap member is separated from the first region and the flap member is continuous with the second region, the fastening member has a non-skin surface more than the first region. It can be stopped at. By fastening the fastening member to the first region, the absorbent article can be mounted so as to cover the wearer's waist circumference.

According to a preferred embodiment, an elastic member is arranged on the waist circumference member. The elastic member is arranged in a region that does not overlap with the joint portion. According to this aspect, when the elastic member overlaps the joint portion, the elastic member is not welded (not formed into a film) when the waist circumference member and the flap member are welded, and the entire joint portion is not formed into a film. It may be difficult to separate through the joint. Since the elastic member is arranged in a region that does not overlap with the joint portion, the joint portion is formed into a film and can be smoothly separated.

According to a preferred embodiment, the total basis weight of the seat member in the flap member is 10 g / m ² or more higher than the total basis weight of the seat member in the waist circumference member. According to this aspect, the total basis weight of the flap member is high, the total basis weight of the waist circumference member is low, and the difference is 10 g / m ² or more. The members can be separated.

According to a preferred embodiment, the flap member has a flap sheet to be joined to the waist circumference member at the joint portion. The waistline member has a waistline sheet to be joined to the flap member at the joint portion. The flap sheet and the waistline sheet are non-woven fabrics and have different fibers from each other. According to this aspect, when the fibers of the flap sheet and the waistline sheet have the same form, the same fibers are strongly fused to each other and difficult to separate. However, when the fibers of the flap sheet and the waistline sheet are different, the fusion between the fibers is relatively low and the fibers are easily separated. In addition, the strength of the joint can be adjusted by adjusting the type of fiber and the composition of different fibers.

According to a preferred embodiment, the flap member and the joint portion are provided in pairs with the center of the absorbent article in the width direction interposed therebetween. According to this aspect, flap members are provided on both sides of the absorbent article in the width direction, the fastening members are stopped on the left and right sides of the wearer's waistline, and the absorbent article is attached so as to cover the wearer's waistline. can. Further, by separating the first region only through one of the joints, one side can be used as a tape-type disposable diaper and the other side can be used as a pants-type disposable diaper. Therefore, it can be adapted to various usage modes.

The absorbent article according to the other aspect includes an annular waist member extending in the width direction along the waistline direction of the wearer, a flap member arranged on the outer surface side of the waistline member, and at least one of the waistline member and the flap member. It has a fastening member arranged in the above, and a joint portion to which the waist circumference member and the flap member are welded in a laminated region in which the waist circumference member and the flap member are laminated. The waistline member has a first region extending from the joint portion to one side in the width direction and a second region extending from the joint portion to the other side in the width direction and connecting to the first region via the joint portion. And have. The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction. By pulling the flap member in the width direction, the first region can be separated from the joint portion via the joint portion in a state where the joint portion and the second region are connected to each other. The connecting region in which the flap member and the second region are connected and the first region can be fastened by the fastening member. When the user pulls the flap member in the width direction, the first region is separated from the joint portion via the joint portion in a state where the joint portion and the second region are connected to each other. Since the flap member and the second region are connected to each other through the joint portion in a state where the first region and the joint portion are separated, the first region side is set as the front waist circumference region in a state where the waist circumference member is expanded. The absorbent article as a tape type can be attached by fastening the fastening member in a state where the fastening member is in contact with the body and the second region side is in contact with the body as the rear waist circumference region. Since it is possible to separate through the joint without separately providing a cutting line for dividing the waistline member, the pants-type absorbent article can be used while suppressing the problem that the joint is unintentionally separated by the cutting line. It is possible to appropriately switch to a tape-type absorbent article.

(2) Absorbent article according to the embodiment The absorbent article according to the embodiment will be described below with reference to the drawings. The absorbent article may be any absorbent article that is worn so as to cover the wearer's waistline. The object to be worn is not limited to humans such as infants and the elderly, and may be animals. The absorbent article may be a disposable diaper that absorbs excrement such as urine, a shorts-type napkin that absorbs menstrual blood, or water play pants that temporarily hold excrement. May be good. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension may differ from the actual one. Therefore, the specific dimensions, etc. should be determined in consideration of the following explanation. In addition, there may be a portion where the relationship and ratio of the dimensions of the drawings are different from each other.

The absorbent article 1 according to the embodiment is a pants-type disposable diaper, and the object to be worn is a human being. FIG. 1 is a perspective view of the absorbent article as viewed from the front side. FIG. 2 is a diagram showing a first separated state of the absorbent article shown in FIG. FIG. 3 is a diagram showing a second separated state of the absorbent article shown in FIG. FIG. 4 is a schematic cross-sectional view based on the cross section taken along the line AA shown in FIG. 1 and is a diagram for explaining a separation operation of the absorbent article 1. The absorbent article 1 has a front waist circumference area S1, a rear waist circumference area S2, and an inseam area S3. The front waist circumference area S1 is a region facing the front waist circumference (abdomen) to be worn. The rear waist circumference area S2 is a region facing the rear waist circumference (back portion) of the object to be worn. The inseam region S3 is a region located in the inseam of the wearable object and arranged between the front waist circumference region S1 and the rear waist circumference region S2. The absorbent article 1 has a longitudinal direction L and a width direction W orthogonal to the longitudinal direction L. The longitudinal direction L is defined by the direction extending to the anterior side and the posterior side of the body. In other words, the longitudinal direction L is the direction in which the side joint portion 55, which will be described later, extends back and forth in the absorbent article 1 which is separated and developed. The width direction W is orthogonal to the longitudinal direction L and is arranged along the waist circumference direction of the wearer. The waist circumference direction is a direction extending in the circumferential direction surrounding the wearer's waist circumference. The absorbent article 1 has orthogonal thickness directions T in both the longitudinal direction L and the width direction W. As shown in FIG. 4, the thickness direction T extends to the skin surface side T1 facing the wearer side and the non-skin surface side T2 opposite to the skin surface side.

The absorbent article 1 has at least a waist circumference member 50, a flap member 60, a fastening member 62, and a joint portion 70 to which the waist circumference member 50 and the flap member 60 are welded. The waist circumference member 50 is continuous in an annular shape in the non-separable state shown in FIG. 1, that is, in the state where the waist circumference member 50 is not separated via the joint portion 70. As shown in FIG. 4, the waist circumference member 50 includes a third region R3 provided with a joint portion 70, a first region R1 extending from the joint portion 70 to one side in the width direction W, and a joint portion 70 in the width direction W. It has a second region R2 extending to the other side of the The same waistline sheet 56 is arranged in the third region R3, the first region R1 and the second region R2 in which the joint portion 70 is provided, and they are continuous with each other. It should be noted that all the waistline sheets 56 do not have to be continuous with the third region R3, the first region R1 and the second region R2, and at least a part of the waistline seats 56 is the third region R3, the first region R1 and the first region. It suffices if it is continuous over two regions R2. The first region R1 of the present embodiment is arranged on both sides of the front waist circumference region S1 with respect to the center in the width direction, and extends inward in the width direction W from the joint portion 70. The second region R2 is arranged on both sides of the front waist circumference region S1 with respect to the center in the width direction, and extends from the joint portion 70 to the outside in the width direction W.

The waistline member 50 has at least a waistline sheet 56. The waist circumference sheet 56 is a sheet that is joined to the flap member 60 via the joint portion 70 among the members constituting the waist circumference member 50. The waistline member 50 may have a seat member other than the waistline sheet 56, that is, a seat member that is not joined to the flap member 60 via the joint portion 70. The waistline sheet 56 may be made of a non-woven fabric. The waistline sheet of the present embodiment has a first waistline sheet 51 and a second waistline sheet 52. The first waistline sheet 51 is arranged on the non-skin surface side (outer surface side) T2 of the absorbent article and is in contact with the flap member 60. The second waistline sheet 52 is located on the skin surface side (inner surface side) T1 of the first waistline sheet 51 and can come into contact with the wearer's skin. The waistline sheet 56 is preferably more easily broken than the flap sheet 61, and the basis weight of the waistline sheet 56 may be lower than the basis weight of the flap sheet 61. The waistline sheet 56 of the present embodiment is composed of two polypropylene spunbonded non-woven fabrics. The total basis weight of the sheet member in the waist member 50 may be a 20 to 70 g / m ^2, preferably, may be a 25~60g / m ^2.

An elastic member 53 may be arranged on the waistline member 50. The elastic member 53 expands and contracts at least in the width direction W, and can improve the fit to the wearer's waist circumference direction. The stretchable member 53 may be exemplified by a thread rubber or a stretchable sheet, and may be arranged between the first waistline sheet 51 and the second waistline sheet 52. The waist circumference member 50 may have a target sheet 54 to which the fastening member 62 of the flap member 60 is fastened. The target sheet 54 is configured so that the fastening member 62 is caught, and may be configured of a non-woven fabric. In the modified example, the waist circumference member 50 may be configured such that the fastening member 62 is fastened to the waist circumference sheet 56 without providing the target sheet 54. Further, the girth member 50 may have a sheet other than the girth sheet 56 (for example, a target sheet 54 or a buttocks cover that covers the buttocks). It is preferable that the seats other than the waistline seat are provided so as not to straddle the first region R1 and the second region R2, which will be described later, that is, in a region not overlapping with the joint portion 70.

As shown in FIG. 1, the absorbent article 1 is a side joint that joins the outer portion of the waist circumference member 50 arranged in the front waist circumference region S1 and the outer portion of the waist circumference member 50 arranged in the rear waist circumference region S2. It may have a portion 55. The side joint 55 may extend along the longitudinal direction L. With the side joints 55 formed, the absorbent article 1 includes a waist opening 17 through which the wearer's torso is passed, and a pair of leg circumference openings 18 into which the wearer's legs are inserted. Is formed. The waist opening 17 may be defined by the front end edge S1F of the front waist circumference region S1 and the rear end edge S2R of the rear waist circumference region S2. The inseam region S3 of the absorbent article 1 may be defined by the inner edge of the side joint 55 in the longitudinal direction L. The boundary between the front waist circumference region S1 and the inseam region S3 may be defined by the trailing edge of the side joint portion 55 in the front waist circumference region S1. The boundary between the rear waist circumference region S2 and the inseam region S3 may be defined by the front end edge of the side joint portion 55 in the rear waist circumference region S2.

The outer portion in the present invention is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention are portions that occupy a certain range in the longitudinal direction L including the edge in the longitudinal direction L, and the front end edge and the rear end edge are edges in the longitudinal direction L. The outer end includes a front end and a rear end, and the outer edge includes a front end edge and a rear end edge.

The fastening member 62 is arranged on at least one of the flap member 60 and the waist circumference member 50. The fastening member 62 is provided on at least one of the surface (inner surface) of the flap member 60 on the waistline member 50 side and the surface (outer surface) of the flap member 60 on the flap member 60 side. The fastening member 62 of the present embodiment is provided on the inner surface of the flap member 60, and is configured to be detachably attached to the outer surface of the waist circumference member 50. In the modification, the fastening member 62 may be provided on the outer surface of the waist circumference member 50 and may be detachably configured on the inner surface of the flap member 60, or may be provided on both the inner surface of the flap member 60 and the outer surface of the waist circumference member 50. It may have been. The fastening member can fasten a connecting region (a region where the flap member and the second region are connected) and a first region, which will be described later. The fastening member 62 may be configured by a mechanical fastener. The fastening member 62 may be arranged so as not to face the outer surface of the absorbent article 1 in the non-separable state of the absorbent article 1. More specifically, the fastening member 62 may be arranged to face the waist circumference member 50 in the non-separable state, and in the folded form of the flap member 60, the flap member in the folded state. 60 may be arranged in a portion facing each other. According to this aspect, the fastening member 62 can be protected before being used as a tape-type diaper, and the problem that the fastening member 62 is unintentionally caught can be suppressed.

The flap member 60 is arranged on the outer surface side (non-skin facing surface side) of the waist circumference member 50. The flap member 60 has at least a flap sheet 61. The flap sheet 61 is a sheet that is joined to the waist circumference member 50 via the joint portion 70. The flap member 60 may have a seat member other than the flap sheet 61, that is, a seat member that is not joined to the waist circumference member 50 via the joint portion 70. The flap sheet 61 may be made of a non-woven fabric. A fastening member 62 is joined to the inner surface side (skin surface side) of the flap sheet 61. The flap member 60 is joined to the waist circumference member 50 via the joint portion 70. In the region of the flap member 60 that does not overlap with the joint portion 70, the flap member 60 is not joined to the waist circumference member 50 and can be separated from the waist circumference member 50. The flap sheet 61 needs to have a strength that does not break when the waistline sheet 56 is separated. The total basis weight of the sheet member in the flap member 60 may be a 50~95g / m ^2, preferably, may be a 60~85g / m ^2.

The joint portion 70 is welded to the waist circumference member 50 and the flap member 60 in the laminated region R60 in which the waist circumference member 50 and the flap member 60 are laminated. The joint portion 70 is a portion where the waist circumference member 50 and the flap member 60 are welded together. The welding can be exemplified by thermal welding, vibration (ultrasonic, laser, microwave, etc.) welding, and pressure welding. The waistline member 50 and the flap member 60 are made into a film by welding at the joint portion 70, and are fragile as compared with the region where the joint portion 70 is not provided.

The joint portion 70 may have a first end side 75 which is an end side on the first region R1 side and a second end side 76 on the second region side of the joint portion 70. The first end side 75 is a side located on the first region R1 side of the outer end sides located on the outer edge of the joint portion 70 in the width direction W, and extends in the longitudinal direction L. The second end side 76 is a side located on the second region R2 side of the outer end sides located on the outer edge of the joint portion 70 in the width direction W, and extends in the longitudinal direction L. The first edge 75 is adjacent to the first region R1, and the second edge 76 is adjacent to the second region R2. The first end side 75 and the second end side 76 may or may not be parallel. The first end side 75 and the second end side 76 of the present embodiment are parallel to each other. In addition, in the form in which the joint portions 70 are arranged at intervals on the first end side 75 (the form in which the first joint portion is formed by an aggregate of a plurality of joint constituent portions), each joint portion is formed. A virtual line connecting the edges on the first region R1 side of the above can be set as the first edge. Similarly, in the form in which the joint portions 70 are arranged at intervals on the second end side 76 (the form in which the second joint portion is formed by an aggregate of a plurality of joint constituent portions), each joint is formed. A virtual line connecting the edges on the second region R2 side of the portion can be set as the second edge.

The laminated region R60 is a region in which the waist circumference member 50 and the flap member 60 are arranged so as to overlap each other in a plan view. In FIG. 1, the laminated region R60 on the right side is shown with diagonal lines in front view. The joint portion 70 extends from one end to the other end of the laminated region R60 in the longitudinal direction L. The joint portion 70 may extend from one end to the other end of the laminated region R60, and may extend L in the longitudinal direction beyond the laminated region R60. The joint portion 70 may be provided in at least a part of the laminated region R60. More specifically, the length of the joint portion 70 in the width direction W may be shorter than the length of the laminated region R60 in the width direction W. Preferably, the laminated region R60 may be provided with a region provided with the joint portion 70 and an extension region extending from the joint portion 70 in the width direction W. The extension region is a region in which the waist circumference member 50 and the flap member 60 are arranged so as to overlap each other in a state where the waist circumference member 50 and the flap member 60 are not joined. The extension region may be provided in a region extending inward in the width direction W from the joint portion 70 and a region extending outward in the width direction W from the joint portion 70. The flap member 60 in the extension region can be gripped and the waist circumference member 50 can be separated. The operation of separating the waist circumference member 50 will be described in detail later.

The absorbent article 1 may have an absorbent body 20. The absorbent main body 20 may be configured as a separate body from the waist circumference member 50. The absorbent body 20 is arranged at least in the inseam region S3. The absorbent main body 20 may be arranged in the front waist circumference area S1 and the rear waist circumference region S2. The absorbent main body 20 is arranged on the skin surface side T1 of the waist circumference member 50 in the front waist circumference region S1 and the rear waist circumference region S2, and is fixed to the waist circumference member 50. The absorbent main body 20 may extend in the longitudinal direction L from the inseam region S3 to the front waist circumference region S1, and may extend in the longitudinal direction L from the inseam region S3 to the rear waist circumference region S2. The absorbent body 20 has at least an absorbent core 21, a top sheet 22, and a back sheet 23. The absorbent core 21 may contain, for example, ground pulp or a highly absorbent polymer (SAP), or a mixture thereof. The absorption core 21 may be covered with a core wrap separate from the absorption core 21. The top sheet 22 may be a liquid permeable sheet. The back sheet 23 may have a liquid-impermeable leak-proof sheet and an exterior sheet arranged on the non-skin surface side of the leak-proof sheet.

Next, a mode of use of the absorbent article 1 thus configured will be described with reference to FIG. 4 and the like. More specifically, the absorbent article 1 according to the present invention is configured to be usable as a pants-type absorbent article 1 and as a tape-type absorbent article 1. An embodiment of switching the pants-type absorbent article to the tape-type absorbent article will be described. As shown in FIGS. 1 and 4A, the absorbent article 1 can be used as a general pants-type absorbent article 1 in a non-separable state in which the waist circumference member 50 is not separated. The absorbent article 1 can be worn by inserting the wearer's leg into the leg circumference opening 18 and inserting the wearer's waist into the waist opening 17 surrounded by the annular waist circumference member 50.

The first region R1 of the absorbent article 1 is configured to be separable from the joint portion 70 via the joint portion 70. That is, the first region R1 of the waist circumference member 50 and the portion of the waist circumference member 50 provided with the joint portion 70 can be separated via the joint portion 70. Therefore, the first region R1 and the joint portion 70 can be separated from each other via the joint portion 70 and used as a tape-type absorbent article 1, or the annular waist circumference member 50 can be broken to remove the absorbent article 1. FIG. 2 shows a first separated state in which one of the left and right first regions R1 and the joint portion 70 are separated. In the operation of separating the first region R1 and the joint portion 70 via the joint portion 70, as shown in FIG. 4B, the flap member 60 joined to the joint portion 70 is pulled in the width direction W, and the joint portion 70 is pulled. And the force to pull the first region R1 apart can be applied. That is, in the absorbent article 1, the flap member 60 is pulled in the width direction W, so that the joint portion 70 and the second region R2 are connected to each other, and the first region R1 becomes the second region via the joint portion 70. It is separable. More specifically, the flap member 60 is pulled toward the second region R2, and the first end side 75 of the joint portion 70 is pulled in a direction away from the first region R1. As a result, as shown in FIG. 4C, the waist circumference member 50 is broken at the first end side 75 of the joint portion 70, and the first region R1 and the joint portion 70 are separated. That is, the third region R3 and the first region R1 provided with the joint portion 70 of the waist circumference member are separated. The first region R1 of the waist circumference member 50 and the joint portion 70 are separable via the joint portion 70. The joint portion 70 is provided from one end to the other end of the laminated region R60 in the longitudinal direction L, and the first region R1 and the joint portion 70 can be separated over the entire area of the laminated region R60 in the longitudinal direction L via the joint portion 70. be. By separating the first region R1 from the joint portion 70, the first region R1 is also separated from the second region R2, and the shape of the waist circumference member 50 becomes a developed shape that is partially cut off from a continuous annular shape. Therefore, the annular waist member 50 becomes non-annular, the waist opening 17 is divided, and the absorbent article 1 can be easily removed.

Further, in a state where the first region R1 and the joint portion 70 are separated, the flap member 60 and the second region R2 are connected to each other via the joint portion 70. After the waist circumference member 50 is deployed, the waist circumference member 50 covers the wearer's waist circumference, and as shown in FIG. 4D, the region where the flap member 60 and the second region R2 are connected is the joint region RS and the first region. R1 and can be fastened by the fastening member 62. As shown in FIG. 3, the articulated region RS is a region extending from the tip of the flap member 60 to the second region via the joint portion 70, and may include at least the flap member 60 and the second region R2. The fastening member 62 of the present embodiment is provided on the flap member 60 and can be fastened to the first region R1. However, in the modified example, the fastening member 62 may be provided in the first region R1 and can be fastened to the flap member 60 or the second region R2. That is, the fastening member 62 may be capable of fastening the first region R1 separated from each other and the connecting region RS. According to such a configuration, the joint portion 70 can be separated via the joint portion 70 without separately providing a cutting line for dividing the waist circumference member 50, so that the joint portion 70 is unintentionally separated by the cutting line. It is possible to appropriately switch the pants-type absorbent article 1 to the tape-type absorbent article 1 while suppressing the above.

The flap member 60 and the joint portion 70 may be provided in pairs with the center of the absorbent article 1 in the width direction W interposed therebetween. FIG. 3 shows a second separated state in which the left and right joint portions 70 and the first region R1 are separated from each other. Flap members 60 are provided on both sides of the absorbent article 1 in the width direction W, and the fastening members 62 are stopped on both the left and right sides of the wearer's waistline, and the absorbent article 1 can be attached so as to cover the wearer's waistline. .. Further, in the first separated state in which the first region R1 is separated only through one joint portion 70, one side can be used as a tape-type disposable diaper and the other side can be used as a pants-type disposable diaper. .. Therefore, it can be adapted to various usage modes.

The separation strength between the first region R1 and the joint portion 70 may be lower than the separation strength between the second region R2 and the joint portion 70. The separation strength between the first region R1 and the joint portion 70 is low, and the first region R1 and the joint portion 70 can be easily separated. On the other hand, since the separation strength between the second region R2 and the joint portion 70 is high, it is difficult to separate the second region R2 and the joint portion 70. Therefore, a state in which the second region R2 and the joint portion 70 are joined and the first region R1 and the joint portion 70 are separated is realized. For example, with the first region R1 side in contact with the abdomen of the body and the second region R2 side in contact with the side and buttocks of the body, the fastening member 62 of the flap member 60 connected to the second region R2 is fastened. By doing so, an absorbent article as a tape type can be attached.

The separation strength can be measured by, for example, the following method. A tensile tester (manufactured by Shimadzu Corporation: Autograph, AGS-1kNG) equipped with a load cell having a maximum load capacity of 50 N is used. When measuring the separation strength of the first region R1, one chuck grips the tip of the flap member 60, and the other chuck grips the first region R1. When measuring the separation strength of the second region R2, one chuck grips the root portion (end portion on the joint portion side) of the flap member 60, and the other chuck grips the second region R2. However, the distance (initial value) between the chucks when gripping is 20 to 50 mm. With a tensile tester, the load applied to the two chucks is measured while pulling the two chucks at a constant speed (example: 500 mm / min) so that the distance between the two chucks is widened. The load when the sample breaks is defined as the separation strength. However, the average value of the breaking strengths of the five samples is calculated as the final breaking strength (N).

The first end edge 75 of the joint 70 may be inclined with respect to the longitudinal direction L. It suffices that at least a part of the first end side 75 is not parallel to the longitudinal direction L but is inclined with respect to the longitudinal direction L. As shown in FIG. 4, when separating the first region R1 and the joint portion 70, the joint portion 70 can be pulled in the width direction W via the flap member 60 to separate the first region R1 and the joint portion 70. At this time, if the first end side 75 of the joint portion 70 is in a form parallel to the longitudinal direction L, a force for separating the joint portion 70 as a whole may be applied and it may be difficult to separate the joint portion 70. However, in the form in which the first end side 75 of the joint portion 70 is inclined in the longitudinal direction L, a force is applied to a part of the joint portion 70 without applying a force to separate the joint portion 70 as a whole. .. Therefore, the joint portion 70 and the first region R1 can be locally separated, and the separated portion can be gradually expanded. Therefore, the first region R1 and the joint portion 70 can be separated more smoothly.

The first end side 75 of the joint portion 70 may have a vertex 77 protruding toward the first region R1 and a side side 78 extending from the vertex 77 to the second region R2 side. The apex 77 may be located on the first region R1 side (one side in the width direction W) of the first end side 75. A force that separates the first region R1 and the joint portion 70 can be applied to the apex 77 to separate the joint portion 70 and the first region R1 at the apex 77, and the separated portion can be gradually expanded. Therefore, the joint portion 70 and the first region R1 can be separated more smoothly. The apex 77 may be located in the center of the first edge 75 in the longitudinal direction L, and the side sides 78 may extend from the apex 77 toward both sides of the longitudinal direction L, respectively. According to this configuration, when a separating force is applied along the width direction W, the joint portion 70 and the first region R1 are separated at the apex at the center of the longitudinal direction L of the first end side 75, and the separation is performed. The formed portions can be expanded on both sides in the longitudinal direction L, and the joint portion 70 and the first region R1 can be quickly separated over the entire area of the joint portion 70 in the longitudinal direction L. The apex 77 of the present embodiment is located at the center of the joint portion 70 in the longitudinal direction, and the shape of the side side 78 is axisymmetric with respect to a line passing through the apex 77 and extending in the width direction W. However, in the modified example, the apex 77 may be deviated from the center in the longitudinal direction of the joint portion 70, and the shape of the side side 78 is axisymmetric with respect to the line passing through the apex 77 and extending in the width direction W. However, it may be asymmetric.

The first end side 75 may be continuous in the longitudinal direction L of the joint portion 70. Since the first end side 75 is continuous in the longitudinal direction L of the joint portion 70, the first end side 75 is continuously separated from the first region R1. The first end side 75 of the present embodiment is a linear shape continuous in the longitudinal direction L, and the second end side 76 is a broken line shape discontinuously extending in the longitudinal direction L. Since the first end side 75 is a continuous linear shape, it is easy to break at the first end side 75, and it is easy to widen the part once broken at the first end side 75 in the longitudinal direction L, and the longitudinal direction of the joint portion 70. The joint 70 and the first region R1 can be quickly separated over the entire area of L.

As shown in FIG. 4A, in the non-separable state, the fastening member 62 of the flap member 60 is arranged to face the first region R1 of the waist circumference member 50 on the non-skin surface side T2 of the first region R1. May be done. According to this aspect, in a state where the first region R1 and the joint portion 70 are separated, that is, when the flap member 60 is separated from the first region R1 and the flap member 60 is continuous with the second region, the fastening member 62. Can be fastened to the non-skin surface of the first region R1. By fastening the fastening member 62 to the first region R1, the absorbent article 1 can be mounted so as to cover the wearer's waist circumference.

The elastic member 53 of the waist circumference member 50 may be arranged in a region that does not overlap with the joint portion 70. The elastic member 53 of the present embodiment is arranged in a part of the rear waist circumference region S2 and the front waist circumference region S1 (the region overlapping with the second region R2). If the stretchable member 53 overlaps the joint portion 70, the stretchable member 53 may not be formed into a film by fusion and may be difficult to separate via the joint portion 70. Since the elastic member 53 is arranged in a region that does not overlap with the joint portion 70, the joint portion 70 can be formed into a film and can be smoothly separated. Further, the elastic member 53 may not be provided in the first region R1. When the joint portion 70 is pulled away from the first region R1 in order to separate the joint portion 70 and the first region R1, the first region R1 is difficult to extend by the elastic member 53, and the joint portion 70 and the first region R1 are separated. One region R1 can be easily separated. The elastic member 53 may be provided in the second region R2. In the form in which the stretchable member 53 is arranged from the second region R2 to the joint portion 70, the end portion of the stretchable member 53 is pressed by the second joint portion 72, and the stretchable member is placed on the first end side 75. It may be configured so that it does not reach. Further, in the modified example, the elastic member 53 may be arranged on the entire waist circumference member 50. More specifically, at least one of the seat members constituting the waistline member may be made of an elastic sheet.

^{The total basis weight of the seat member in the flap member 60 may be 10 g / m 2} or more higher than the total basis weight of the seat member in the waist circumference member 50. The total basis weight of the sheet members in the flap member 60 is a value obtained by totaling the basis weight of each sheet member constituting the flap member. Similarly, the total basis weight of the seat members in the waist circumference member is a value obtained by totaling the basis weight of each seat member constituting the waist circumference member. More preferably, the basis weight of the flap sheet 61 ^{may be 25 g / m 2} or more higher than the basis weight of the waistline sheet 56. The total basis weight of the seat member in the flap member 60 of the present embodiment is 85 g / m ² , and the total basis weight of the seat member in the waist circumference member 50 is 58 g / m ² , and the difference is 27 g / m. It is ^2. According to this configuration, the flap member 60 is hard to break, the waistline member 50 is easy to break, and the ease of breaking can be made different. Therefore, the waist circumference member 50 can be separated without separating the flap member via the joint portion 70. Further, the larger the difference in basis weight, the easier it is for the flap member to break due to the difference in strength between the flap member 60 and the waist circumference member 50.

The flap sheet 61 and the waistline sheet 56 are non-woven fabrics and may have different fibers from each other. When the fibers of the flap sheet 61 and the waistline sheet 56 are in the same form, the same fibers are strongly fused to each other, making it difficult to separate them. However, when the fibers of the flap sheet 61 and the waistline sheet 56 are different, the fusion between the fibers is relatively low and the fibers are easily separated. Further, the strength of the joint portion 70 can be adjusted by adjusting the type of fiber and the composition of different fibers.

The joint portion 70 is not limited to the configuration of the present embodiment. FIG. 5 shows a joint portion 70 according to a modified example. In the following description of the modified example, the same components as those of the above-mentioned absorbent article will be described by using the same reference numerals. FIG. 5A shows the joint portion 70A according to the first modification. The apex 77 of the first end side 75 of the joint portion 70A of the joint portion 70A according to the first modification is provided at the end edge of the first end side 75 in the longitudinal direction L, respectively. The side side 78 of the first end side 75 may extend from the apex 77 to the second region R2 side, respectively. When the pulling force of the flap member 60 is applied parallel to the width direction W, if one apex is provided in the center of the first end side 75 in the longitudinal direction as in the embodiment, the apex is provided. Is easy to apply force. However, the force for pulling the flap member 60 may be applied not parallel to the width direction W but diagonally. In this case, if vertices are provided at the edges of the first end side 75 in the longitudinal direction L, a force is likely to be applied to any of the vertices, and the portion separated by the vertices can be gradually expanded. .. Further, at the end edge on the side separated from the joint portion of the first region R1 (the side of the boundary separated from the joint portion), the edge in the longitudinal direction L does not protrude inward in the width direction W, and the end edge is on the wearer's belly. It is possible to suppress a feeling of strangeness that the edge of the end edge of the first region R1 in the longitudinal direction L hits the skin.

FIG. 5B shows the joint portion 70B according to the second modification. The apex 77 of the first end side 75 of the joint portion 70B according to FIG. 5B is provided only on one end edge of the first end side 75 in the longitudinal direction L. The side side 78 extends from the apex 77 to the other end edge of the first end side 75 in the longitudinal direction L. Even with the joint portion 70B according to the second modification, a force is likely to be applied to the apex 77, and the portion separated at the apex 77 can be gradually expanded. Further, the first end side 75 and the second end side 76 are both linear in the longitudinal direction L. The first end side 75 and the second end side 76 are composed of one joint portion 70B.

FIG. 5C shows the joint portion 70C according to the modified example 3. The joint portion 70C according to the third modification has a first joint portion 71 provided on the first end side 75 and a second joint portion 72 provided on the second end side 76. The first joint portion 71 and the second joint portion 72 are separated from each other in the width direction W. Ultrasound compared to a configuration in which a single joint forms the entire joint 70C by forming the joint 70C with a plurality of joints (first joint and second joint) C separated from each other. By welding with the above, the entire area of the joint portion 70C can be easily welded appropriately. More specifically, in the case of welding by ultrasonic waves, if the area of the joint portion 70C becomes too large, the ultrasonic waves may not propagate to the entire joint portion 70C and the entire joint portion 70C may not be properly welded. be. However, by forming the joint portion by a plurality of joint portions (first joint portion and second joint portion) 70C separated from each other, ultrasonic waves are propagated over the entire joint portion 70C, and the entire joint portion 70C is appropriately welded. can. The length of the first joint portion 71 in the width direction W may be longer than the length of the second joint portion 72 in the width direction W. The material of the portion where the joint portion 70C is formed by welding is formed into a film, and it becomes easy to separate the joint portion 70C as a boundary. Since the total length of the first joint portion 71 in the width direction W is long, the first end side 75 and the first region R1 can be easily separated via the first joint portion 71, and the flap member 60 can be smoothly separated into the first region R1. Can be separated from. In the form in which the length of the first joint portion 71 in the width direction W and the length of the second joint portion 72 in the width direction W change, the maximum width of each joint portion may be compared.

FIG. 5D shows the joint portion 70D according to the modified example 4. The joint portion 70D according to the modification 4 is shown. The length of the first joint portion 71 in the width direction W and the length of the second joint portion 72 in the width direction are the same. The first end side 75 and the second end side 76 of the joint portion 70D according to the modified example 4 are both linear in the longitudinal direction. The first joint portion 71 including the first end side 75 and the second joint portion 72 including the second end side 76 are separated from each other in the width direction W. Since the first end side 75 of the joint portion 70C according to the modified example 3 and the first end side 75 of the joint portion 70D according to the modified example 4 are both continuous in the longitudinal direction, the first end side 75 is continuous. It is easy to separate from the first region R1.

FIG. 5 (E) shows the joint portion 70E according to the modified example 5. In the joint portion 70E according to the modified example 5, the total length of the first end side 75 in the longitudinal direction L is longer than the total length of the second end side 76 in the longitudinal direction L. Both the first end side 75 and the second end side 76 are in the shape of a broken line extending discontinuously in the longitudinal direction. The first joint portion including the first end side 75 and the second joint portion 72 including the second end side 76 are separated from each other in the width direction W. The total length of the joint portion 70E in the first end side 75 in the longitudinal direction L may be longer than the total length of the joint portion 70E in the second end side 76 in the longitudinal direction L. The total length of the joint portion 70E in the first end side 75 in the longitudinal direction L is the total length of the first end side 75 in the form in which the joint portion 70E on the first end side 75 is continuous in the longitudinal direction L. It is the distance between one end of the longitudinal direction L and the other end in the longitudinal direction L, and the joint portion 70E of the first end side 75 is not continuous in the longitudinal direction L, and the joint constituent portions are intermittently arranged. The total length of the joint components arranged on the first end side 75 in the longitudinal direction L. The total length of the second end side 76 is the same as the total length of the first end side 75. The material of the portion where the joint portion 70E is formed by welding is formed into a film, and it becomes easy to separate the joint portion 70E as a boundary. The flap member 60 can be more smoothly separated from the first region R1. That is, since the joint portion 70E according to the modified example 5 has a long total length in the longitudinal direction L of the first joint portion 71, the first end side 75 of the joint portion 70E is easily separated via the first joint portion 71. .. In the joint portion 70E according to the modified example 5, the length of the broken line of the first end side 75 is longer than the length of the broken line of the second end side 76, so that the total length of the first end side 75 in the longitudinal direction L is increased. It may be longer than the total length of the second end side 76 in the longitudinal direction L. Alternatively, in the joint portion 70E according to the modified example 5, the interval between the broken lines of the first end edge 75 is shorter than the length of the interval of the second end edge 76, so that the total length of the first end edge 75 in the longitudinal direction L is short. May be longer than the total length of the second end side 76 in the longitudinal direction L.

FIG. 5F shows the joint portion 70F according to the modified example 6. The joint portion 70F according to the modified example 6 is composed of one joint portion 70F. A first end side 75 and a second end side 76 are provided on both sides of one joint portion 70F in the width direction W, respectively. FIG. 5 (G) shows the joint portion 70G according to the modified example 7. In the joint portion 70G according to the modification 7, a plurality of vertices 77 are arranged at intervals in the longitudinal direction, and side sides 78 extending from the vertices 77 to the second region R2 side are provided between the plurality of vertices 77. ing.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description of the present specification is for the purpose of exemplary explanation and does not have any limiting meaning to the present invention.

In the modified example, the flap member 60 and the joint portion 70 may be provided on only one side of the center of the absorbent article in the width direction W. That is, the first region R1 may be configured to be separable from the joint portion 70 only on one side of the waist circumference member with respect to W in the width direction. Further, in the modified example, the side joint portion 55 may or may not be provided on either the left or right side. In the above-described embodiment, the side joint portion 55 and the joint portion 70 are provided separately. However, in the modified example, the side joint portion 55 and the joint portion 70 may be provided integrally. That is, the flap member 60 may be joined together at the position where the waist member of the front waist area S1 and the waist member of the rear waist area S2 are joined. Further, in the modified example, the waist circumference member 50 including the first region R1 and the waist circumference member 50 including the second region R2 do not have to be continuous via the joint portion. More specifically, at the first end side 75, the waist circumference member 50 including the first region R1 and the flap member 60 are joined, and at the second end side 76, the waist circumference member 50 including the second region R2 and the flap member 60 are joined. You can do it. The waistline member 50 including the first region R1 and the waistline member 50 including the second region R2 are separated and may be discontinuous. When the waist circumference member 50 including the first region R1 and the waist circumference member 50 including the second region R2 are in a discontinuous form, the flap member 60 is sandwiched in the thickness direction T, and the waist circumference member including the first region R1 is sandwiched. The waist circumference member 50 including the 50 and the second region R2 may be arranged respectively. According to the modification, it becomes easier to separate only the joint between the waist circumference member 50 including the first region R1 and the joint portion 70.

1: Absorbent article 50: Girth member 53: Elastic member 56: Girth sheet 60: Flap member 61: Flap sheet 62: Fastening member 70, 70A, 70B, 70C, 70D, 70E, 70F, 70G: Joint portion 71 : 1st joint 72: 2nd joint 75: 1st end side 76: 2nd end side 77: Vertex 78: Side side R1: 1st region R2: 2nd region R3: 3rd region R60: Laminated region RS : Joint area S1: Front waist area S2: Rear waist area S3: Inseam area L: Longitudinal direction T: Thickness direction T1: Skin surface side T2: Non-skin surface side W: Width direction

Claims (14)

An annular waist member extending in the width direction along the wearer's waist direction,
A flap member arranged on the outer surface side of the waistline member and
A fastening member arranged on at least one of the waistline member and the flap member,
It is an absorbent article having the girth member and the joint portion to which the flap member is welded in the laminated region where the girth member and the flap member are laminated.
The waistline member has a first region extending from the joint portion to one side in the width direction and a second region extending from the joint portion to the other side in the width direction and connecting to the first region via the joint portion. And have
The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction.
The first region is separable from the joint via the joint.
In a state where the first region and the joint portion are separated, the flap member and the second region are connected to each other via the joint portion.
The fastening member is an absorbent article capable of fastening the flap member, the connecting region in which the second region is connected, and the first region. The absorbent article according to claim 1, wherein the separation strength between the first region and the joint portion is lower than the separation strength between the second region and the joint portion. The absorbent article according to claim 1 or 2, wherein the first end side of the joint portion on the first region side is inclined with respect to the longitudinal direction. The absorbent article according to claim 3, wherein the first end side of the joint portion has an apex protruding toward the first region side and a side side extending from the apex toward the second region side. The apex is located in the center of the junction in the longitudinal direction.
The absorbent article according to claim 4, wherein the side sides extend from the apex toward both outer sides in the longitudinal direction. The vertices are provided at both ends of the joint in the longitudinal direction, respectively.
The absorbent article according to claim 4, wherein the side sides extend from the apex toward the inside in the longitudinal direction. The joint portion has a first end side of the joint portion on the first region side and a second end side of the joint portion on the second region side.
One of claims 1 to 6, wherein the total length of the joint portion in the first end side in the longitudinal direction is longer than the total length of the joint portion in the longitudinal direction in the second end side. The absorbent article described in the section. The absorbent article according to claim 7, wherein the first end side is continuous in the longitudinal direction of the joint portion. The fastening member is arranged on the flap member, and the fastening member is arranged on the flap member.
From claim 1, the fastening member is arranged on the non-skin surface side of the first region so as to face the first region in a state before the first region and the joint portion are separated. The absorbent article according to any one of claims 8. An elastic member is arranged on the waistline member.
The absorbent article according to any one of claims 1 to 9, wherein the elastic member is arranged in a region that does not overlap with the joint portion. The absorbent article according to any one of claims 1 to 10, wherein the total basis weight of the seat member in the flap member is 10 g / m ^{2 or more higher than the total basis weight of the seat member in the waist circumference member.} The flap member has a flap sheet to be joined to the waist circumference member at the joint portion.
The waistline member has a waistline sheet to be joined to the flap member at the joint portion.
The absorbent article according to any one of claims 1 to 11, wherein the flap sheet and the waistline sheet are non-woven fabrics and have fibers different from each other. The absorbent article according to any one of claims 1 to 12, wherein the flap member and the joint portion are provided in a pair with the center of the absorbent article in the width direction interposed therebetween. An annular waist member extending in the width direction along the wearer's waist direction,
A flap member arranged on the outer surface side of the waistline member and
A fastening member arranged on at least one of the waistline member and the flap member,
It is an absorbent article having the girth member and the joint portion to which the flap member is welded in the laminated region where the girth member and the flap member are laminated.
The girth member has a first region adjacent to the joint portion on one side in the width direction and a second region adjacent to the joint portion on the other side in the width direction.
The joint extends from one end to the other end of the laminated region in the longitudinal direction orthogonal to the width direction.
By pulling the flap member in the width direction, the first region can be separated from the second region through the joint portion in a state where the joint portion and the second region are connected to each other.
An absorbent article capable of fastening the flap member, the connecting region in which the second region is connected, and the first region by the fastening member.

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