WO2023095603A1

WO2023095603A1 - Absorbent article

Info

Publication number: WO2023095603A1
Application number: PCT/JP2022/041508
Authority: WO
Inventors: 京太齋藤; 浩子村上; 加奈中野
Original assignee: ユニ・チャーム株式会社
Priority date: 2021-11-24
Filing date: 2022-11-08
Publication date: 2023-06-01
Also published as: JP2023077294A; AU2022398720A1

Abstract

An absorbent article (1) having a vertical direction, a horizontal direction and a front-rear direction intersecting each other, and comprising a waist part (20, 30) consisting of a one-side waist part (20) and the other-side waist part (30) and a crotch part, characterized in that: at least one ends of the one-side waist part (20) and the other-side waist part (30) in the horizontal direction are joined together at joining parts (2a, 2b) and have a fastening part (5); the base of the fastening part (5) is fixed to the waist part with a fixing part (F1); the tip of the fastening part (5) has an engagement part separably engaging with the non-skin side of the waist part (20, 30); and, in the horizontal direction, at least a part of the fixing part (F1) is spaced from the joining parts (2a, 2b).

Description

absorbent article

The present invention relates to absorbent articles.

Conventionally, there is known a disposable diaper that can be used as an open so-called tape-type diaper by cutting off a predetermined portion of a so-called pants-type diaper whose waistline is connected in a ring in advance, as in Patent Document 1.

JP-A-5-317356

In the disposable diaper disclosed in Patent Document 1, since the fastening pieces that can be engaged with the front body and the side portions of the front body and the back body are integrally joined at the joints, movements such as fastening operation of the fastening pieces are prevented. There is a risk that the joint will peel off.

The present invention has been made in view of the conventional problems as described above, and an object thereof is to provide an absorbent article that reduces breakage of joint portions due to movement of fastening portions.

The main invention for achieving the above object is an absorbent article having vertical, horizontal, and front-back directions orthogonal to each other, and having a one-side waistline portion, a waistline portion having the other-side waistline portion, and a crotch portion. At least one end of the one-side waistline portion and the other-side waistline portion in the left-right direction is joined by a joint portion, has a fastening portion, and has a proximal end of the fastening portion. The portion is fixed to the waist portion with a fixing portion, and the tip portion of the fastening portion has an engaging portion that separably engages with the non-skin side surface of the waist portion, and in the left-right direction, In the absorbent article, at least a portion of the fixed portion is separated from the joint portion.
Other features of the present invention will become apparent from the description of the specification and accompanying drawings.

According to the present invention, it is possible to reduce the risk of damage to the joint due to movement of the fastening portion.

1 is a perspective view of a disposable diaper 1 in a worn state; FIG. Fig. 2 is a plan view of the diaper 1 in a natural state as seen from the side of the abdominal waistline portion 20; Fig. 2 is a plan view of the diaper 1 in an unfolded and stretched state, viewed from the non-skin side. 4 is an enlarged view of portion X in FIG. 3; FIG. It is a figure explaining isolation|separation of the ventral waist part 20, and formation of a waist opening. FIG. 10 is a diagram for explaining the operation of cutting the ventral waist portion 20. FIG. 4 is an enlarged view of a ventral waist portion 20 in FIG. 3. FIG.

At least the following matters will become apparent from the descriptions of this specification and the accompanying drawings.
An absorbent article having a vertical direction, a horizontal direction, and a front-back direction perpendicular to each other, and having a one side waist portion, a waist portion having the other side waist portion, and a crotch portion, wherein the one side waist portion and the At least one end of the other side waist portion in the left-right direction is joined by a joint portion and has a fastening portion, and a base end portion of the fastening portion is fixed to the waist portion by a fixing portion. The distal end portion of the fastening portion has an engaging portion that separably engages with the non-skin side surface of the waist portion, and at least a portion of the fixing portion in the left-right direction It is an absorbent article characterized in that it is separated from the part.

According to such an absorbent article, it is possible to reduce the risk of joint damage due to movement of the fastening portion.

In this absorbent article, it is desirable that all of the fixed portions are separated from the joint portions in the left-right direction.

According to such an absorbent article, it is possible to reduce the risk that the joints of the joints will be damaged due to the movement of the fastening parts.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. It is desirable to

In this absorbent article, the waist portion has a cutting guide portion for guiding cutting of at least a part of the waist portion, and the cutting guide portion extends from the joint portion to the other side in the left-right direction. It is desirable that a section is provided.

According to such an absorbent article, it is possible to reduce the risk of damage to the joints of the joints even when the waist portion is cut by the cutting guide portion.

In such an absorbent article, it is desirable that at least part of the fixing part also serves as a cutting guide part when cutting at least part of the waist part.

According to such an absorbent article, there is no need to provide a cutting guide portion by a new process such as perforation, and even when cutting the waist portion, it is possible to reduce the risk of damage to the joints of the joints. .

In such an absorbent article, in an accommodated state in which the absorbent article is accommodated in the package, the fastening portion is arranged on the one side in the left-right direction, from the rear side in the front-rear direction, to the rear side in the front-rear direction. The base end portion of the fastening portion is positioned at the rearmost side of the absorbent article when the absorbent article is viewed from the one waist portion side in the front-rear direction. However, it is desirable that the distal end portion of the fastening portion is located on the frontmost side of the absorbent article.

According to such an absorbent article, since the fastening portion generally has higher rigidity than the waist portion, when taking out the absorbent article housed in the package, the fastening portion is not the joint portion, but the fastening portion. Since it can be taken out while holding the fixing portion, it is possible to reduce damage to the joint portion.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. In the left-right direction, the fixed portion is provided on the other side of the joint portion, the engaging portion is provided on the other side of the fixed portion, and the fastening portion is provided on the other side of the fixed portion. It is desirable to have a non-fixed portion that is not fixed to the one-side waistline portion and is provided on the one side of the fixed portion and on the other side of the joint portion.

According to such an absorbent article, since the portion between the fixed portion and the joint portion in the left-right direction of the one waist portion can be covered with a part of the fastening portion, the space between the fixed portion and the joint portion can be covered. It is possible to reduce the risk of the part being damaged.

In such an absorbent article, when the absorbent article is viewed from the one-side waistline side in the front-rear direction in the natural state, the length of the fastening portion in the up-down direction is equal to the one-side waistline. It is desirable to have a portion longer than the vertical length of the portion.

According to such an absorbent article, since it is easy to grasp the fastening portion with high rigidity in the portion where the length of the fastening portion in the vertical direction is longer than the length in the vertical direction of the one side waist portion, It becomes easier to prevent damage to parts and joints.

In this absorbent article, at least part of the fixing part is also a cutting guide part when at least part of the waist part is cut, and the fastening part is a fixing part for forming the fixing part. It is preferable that a fixing means area provided with means is provided, and the length of the fixing means area in the vertical direction is longer than the length of the joint portion in the vertical direction.

According to such an absorbent article, the fixing means area is provided to be longer than the vertical length of the waist portion to be cut, so that the waist portion can be easily separated at the cutting guide portion.

)
In such an absorbent article, it is desirable that the force for separating the fixed portions is greater than or equal to the force for separating the joint portions.

According to such an absorbent article, it is possible to reduce the risk of separation of the fixing portion due to the movement of the fastening portion, while reducing the risk that the bonding portion will be separated due to the movement of the fastening portion. can.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. Further, it is preferable that the one-side waistline portion has an elastic region that expands and contracts in the lateral direction between the joint portion and the fixed portion in the lateral direction.

According to such an absorbent article, the expansion/contraction region cushions the movement of the fastening portion, reducing the risk of damage to the portion between the joining portion and the fixing portion.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. Further, it is preferable that the one-side waist portion has a non-stretchable region that does not stretch or contract in the lateral direction between the joint portion and the fixed portion in the lateral direction.

According to such an absorbent article, since the portion between the joint portion and the fixed portion does not expand or contract, it becomes easier to apply a force to move the fastening portion directly to the fastening portion, thereby engaging the fastening portion. and make adjustments easier.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. and the one-side waist portion has a stretchable region that stretches in the left-right direction and a non-stretchable region that does not stretch in the left-right direction between the joint portion and the fixing portion in the left-right direction, It is preferable that the stretchable region is adjacent to the joint portion from the other side, and the non-stretchable region is adjacent to the fixed portion from the one side.

According to such an absorbent article, the elastic region buffers the movement of the fastening portion, reducing the risk of damage to the portion between the joint portion and the fixed portion, while directly applying the force to move the fastening portion. It becomes easier to apply the force to the fixing portion, and it becomes easier to adjust the engagement of the fixing portion.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. and the one-side waist portion has a stretchable region that stretches in the left-right direction and a non-stretchable region that does not stretch in the left-right direction between the joint portion and the fixing portion in the left-right direction, It is desirable that the length of the stretchable region in the left-right direction is longer than the length of the non-stretchable region in the left-right direction.

According to such an absorbent article, while the force to move the fastening portion is applied directly to the fastening portion, the movement of the fastening portion is buffered by the stretchable region, so that the portion between the joint portion and the fixing portion can be stretched. can reduce the risk of damage.

In this absorbent article, the fastening portion is fixed to the one-side waist portion by the fixing portion, and the engaging portion is separably engaged with the non-skin side surface of the one-side waist portion. In the left-right direction, the fixed portion is provided on the other side of the joint portion, the engaging portion is provided on the other side of the fixed portion, and the fastening portion is provided on the other side of the fixed portion. It has a non-fixed portion that is not fixed to the one-side waistline portion and is provided on the one side of the fixed portion and on the other side of the joint portion, and extends from the one-side waistline portion side in the front-rear direction. When viewing the absorbent article, it is desirable to have a portion where the non-stretchable region and the non-fixed portion overlap.

According to such an absorbent article, when the absorbent article is viewed from one side of the waistline, the non-fixed portion easily covers the tip of the stretchable member in the non-stretchable region, which improves the appearance of the absorbent article. improves.

In this absorbent article, the one-side waistline portion includes the one-side waistline stretchable region that stretches in the left-right direction, and the other-side waistline portion includes the other-side waistline stretchable region that stretches in the left-right direction, It is preferable that a force per unit area for extending the one side waist elastic region by a predetermined distance in the lateral direction is larger than a force per unit area for extending the other side waist elastic region by a predetermined distance.

According to such an absorbent article, the one-side waist portion and the other-side waist portion each include a stretchable member, thereby improving the fit to the waist of the wearer while improving the fit of the other-side waist portion. By making it easy to stretch ahead, it is possible to reduce the risk of damage to the joint due to excessive force being applied to the joint due to the movement of the fastening portion.

===Embodiment===
Hereinafter, as an absorbent article according to the present invention, an embodiment will be described by taking a pants-type disposable diaper for infants as an example. However, the absorbent article according to the present invention can be used not only as disposable diapers for infants but also as disposable diapers for adults, sanitary shorts, and the like.

=== Configuration of Disposable Diaper 1 ===
FIG. 1 is a perspective view of a disposable diaper 1 (hereinafter referred to as "diaper") in a worn state, and is a perspective view seen from one side in the left-right direction. FIG. 2 is a plan view of the diaper 1 in a natural state as seen from the side of the abdominal waist portion 20. FIG. FIG. 3 is a plan view of the diaper 1 in the unfolded and stretched state, viewed from the non-skin side. The center line CC in FIG. 3, etc. is the center line in the horizontal direction in the stretched state. 3 shows the unfolded and stretched state of the pants-type diaper 1 shown in FIGS. Hereinafter, the center line CC in the horizontal direction of the diaper 1 in each drawing is the center line in the stretched state.

"Natural state" is the state when the diaper 1 is left for a predetermined period of time. For example, after taking out the diaper 1 in the product state from the package, the dorsal waist part 30 is pulled outward on both sides in the left-right direction so that the

waist parts

20 and 30 are in an "extended state", and this stretched state is continued for 15 seconds. Release the tension of the diaper 1 and place it on a flat surface such as a desk. Then, the state after 5 minutes of being placed flat on a flat surface is defined as a natural state.

The "unfolded state" means that both side portions of the diaper 1 in the pants-type state, that is, the

joint portions

2a and 2b of the both side end portions of the abdominal waist portion 20 and the both side end portions of the dorsal waist portion 30 are separated. , is a state in which the entire diaper 1 is spread out in a plane. The term “stretched state” refers to a state in which the elastic members of the diaper 1 are stretched to such an extent that wrinkles of the diaper 1 are no longer visible. Specifically, it shows a state in which the dimensions of each member constituting the diaper 1 (for example, the ventral waist portion 20 to be described later, etc.) are stretched until they match or are close to the dimensions of the individual members.

In the underpants-type state shown in FIGS. 1 and 2, the diaper 1 has vertical, horizontal, and front-back directions, and is formed with a waist opening BH and a pair of leg openings LH. In the vertical direction, the waist opening BH side is the upper side, and the crotch side is the lower side. In the front-rear direction, the wearer's ventral side is the front side, and the wearer's dorsal side is the rear side. The direction in which the materials forming the diaper 1 are laminated is called the thickness direction, the side in contact with the wearer in the thickness direction is called the skin side, and the side opposite to the skin side is called the non-skin side. The thickness direction is also the direction along the front-rear direction in the natural state.

The pants-side diaper 1 is a so-called three-piece type, and has an absorbent main body 10, an abdominal waist portion 20, and a back waist portion 30. The ventral waistline 20 covers the abdomen of the wearer and the dorsal waistline 30 covers the back of the wearer. The diaper 1 also has fastening portions 5 .

In the diaper 1 in the developed state shown in FIG. One end of the absorbent body 10 in the longitudinal direction is disposed in the central portion of the ventral waist portion 20 in the lateral direction, and the longitudinal direction of the absorbent body 10 is disposed in the central portion of the dorsal waist portion 30 in the lateral direction. The crotch portion 40 is configured by arranging the end portion on the other side of the direction. The absorbent main body 10 is arranged closer to the skin than the ventral waist portion 20 and the back waist portion 30 .

The diaper 1 in the unfolded state shown in FIG. 3 is folded in half at substantially the center CL in the longitudinal direction of the absorbent main body 10 with the longitudinal direction of the absorbent main body 10 along the vertical direction of the diaper 1, and the left and right sides of the diaper 1 are folded. Both side ends of the ventral waist portion 20 and both side ends of the dorsal waist portion 30 in the direction are joined by heat welding, ultrasonic welding, or the like to form a pair of joints 2a and 2b. 1 and FIG. 2, the pants-type diaper 1 is obtained. The joint portion 2a is a joint portion provided on one side in the left-right direction, and the joint portion 2b is a joint portion provided on the other side in the left-right direction.

The absorbent main body 10 includes an absorbent body 11, a liquid-permeable top sheet 12 arranged closer to the skin than the absorbent body 11, a second sheet 13 arranged between the top sheet 12 and the absorbent body 11, and an absorbent body. A side sheet 14 arranged on the skin side of the body 11 and the second sheet 13, a liquid-impermeable back sheet 15 arranged on the non-skin side of the absorbent body 11, and a non-skin side of the back sheet 15. and an exterior sheet 16 arranged thereon.

The absorbent body 11 has a substantially rectangular shape in plan view, and includes an absorbent core A that absorbs and retains excreted fluid such as urine, and a liquid-permeable core wrap sheet (not shown) that covers the absorbent core. As the absorbent core A, liquid-absorbent fibers such as pulp containing a superabsorbent polymer (SAP) are molded into a predetermined shape, for example, a substantially hourglass shape in plan view (liquid-absorbent fiber molding), A so-called SAP sheet obtained by forming a superabsorbent polymer (SAP) into a sheet shape can be exemplified. Alternatively, the absorbent core 11A may be formed by stacking the SAP sheet and the liquid-absorbent fiber molding in the thickness direction. For example, the SAP sheet, the liquid-absorbent fiber molding, The absorbent core 11A may have a structure in which SAP sheets are stacked. The length of the absorbent core 11A of the diaper 1 in the left-right direction substantially matches the length of the absorber 11 in the left-right direction. Examples of the core wrap sheet include liquid-permeable sheets such as tissue paper and non-woven fabric. In addition, the structure which does not have a core wrap sheet may be sufficient.

As shown in FIG. 3, leg elastic members 17 provided on both sides of the absorbent body 10 in the left-right direction constitute leg gathers. The leg gathers of the pants-type diaper 1 are provided along the leg openings LH, and the expansion and contraction of the leg elastic members 17 allows the diaper 1 to fit around the wearer's legs. The leg elastic members 17 of the diaper 1 use a plurality of thread rubbers, and for example, the back sheet 15 and the outer sheet 16 are formed between the outer sheets 16 that are folded inward in the left-right direction to form two layers. The absorbent main body 10 is fixed between and in a state of being stretched in the longitudinal direction.

Leakage prevention wall elastic members 18 are provided inside the leg elastic members 17 on both sides of the absorbent main body 10 in the left-right direction. A plurality of leakage prevention wall elastic members 18 are fixed while being stretched in the longitudinal direction between the side sheets 14 that are folded outward in the left-right direction to form two layers. Form a leak-proof wall. When the diaper 1 is worn, the leak-preventing wall portion stands up against the wearer's skin side due to the elasticity of the leak-preventing wall stretchable member 18 and fits the crotch portion of the wearer.

Examples of the leg-surrounding elastic member 17 and the leak-proof wall elastic member 18 include rubber threads and elastic sheets.

The ventral waist portion 20 has a skin-side sheet 21, a non-skin-side sheet 22, and a plurality of elastic members 23. The skin-side sheet 21 and the non-skin-side sheet 22 are joined by a joining means such as hot-melt adhesive, heat or ultrasonic welding, or the like. The skin-side sheet 21 and the non-skin-side sheet 22 are sheet members having substantially the same size and shape, and have substantially rectangular shapes in this embodiment. The non-skin-side sheet 22 is arranged on the non-skin side of the skin-side sheet 21 . As the skin-side sheet 21 and the non-skin-side sheet 22, SMS nonwoven fabrics (spunbond/meltblown/spunbond nonwoven fabrics), spunbond nonwoven fabrics, air-through nonwoven fabrics, point-bond nonwoven fabrics, stretchable nonwoven fabrics, plastic sheets, perforated plastic sheets, and their A non-stretchable sheet such as a laminate sheet can be used.

The plurality of stretchable members 23 of the ventral waist portion 20 are arranged side by side in the vertical direction between the skin-side sheet 21 and the non-skin-side sheet 22, and are fixed in a horizontally stretched state. Therefore, the ventral waist part 20 expands and contracts in the left-right direction to fit the wearer's waist. As the stretchable member 23, a stretchable member such as rubber or spandex can be exemplified. The non-skin side surface of the non-skin side sheet 22 has an engaged portion 25 that enables engagement of an engaging portion 51 (described later). The engaged portion 25 is a so-called target area, and can be exemplified by a nonwoven fabric sheet, for example. In addition, when the male member of the hook-and-loop fastener is used for the engaging portion 51 , the engaged portion is selected according to the engaging portion 51 , such as using the female member of the hook-and-loop fastener for the engaged portion 25 . It is desirable to Furthermore, as the engaged portion 25, the non-skin side sheet 22 made of a member (for example, nonwoven fabric) that can be engaged with the engaging portion 51 without providing a separate member on the non-skin side surface of the non-skin side sheet 22 is used. , the non-skin side surface of the non-skin side sheet 22 may be directly engaged.

The back waist part 30 has a skin side sheet 31 , a non-skin side sheet 32 and a plurality of elastic members 33 . The skin-side sheet 31 and the non-skin-side sheet 32 are joined by joining means such as adhesive such as hot melt, or welding such as heat or ultrasonic waves. The skin-side sheet 31 and the non-skin-side sheet 32 are sheet members having substantially the same size and shape, and have substantially rectangular shapes in this embodiment. The non-skin-side sheet 32 is arranged on the non-skin side of the skin-side sheet 31 . Examples of the skin-side sheet 31 and the non-skin-side sheet 32 include polypropylene SMS nonwoven fabrics (spunbond/meltblown/spunbond nonwoven fabrics), spunbond nonwoven fabrics, air-through nonwoven fabrics, point-bond nonwoven fabrics, elastic nonwoven fabrics, plastic sheets, and perforated plastics. Non-stretchable sheets such as sheets and laminated sheets thereof can be used.

The plurality of stretchable members 33 of the back waist portion 30 are arranged vertically and horizontally between the skin-side sheet 31 and the non-skin-side sheet 32, and are fixed in a stretched state in the left-right direction. Therefore, the ventral waist portion 20 and the back waist portion 30 expand and contract in the left-right direction, respectively, to fit the wearer's waist. Examples of the

stretchable members

23 and 33 include stretchable members such as rubber and spandex.

The fastening portion 5 is a so-called tab (pinch) member, and is a member used to form a waist opening when the ventral waist portion 20 is cut. 4 is an enlarged view of a portion X in FIG. 3. FIG. In the fastening portion 5 of the present embodiment, the base end portion of the fastening portion 5 (one side in the left-right direction in FIG. 3 etc.) is fixed to one side from the center in the left-right direction of the ventral waist portion 20, The tip portion (the other side in the left-right direction in FIG. 3 and the like) has an engaging portion 51 that separably engages with the non-skin side surface of the ventral waist portion 20 .

The fastening portion 5 is a grip portion that is grasped by a wearer or a person who causes the wearer to put on the diaper 1 (hereinafter also referred to as a "wearer, etc."). It is preferable to have strength to the extent that it does not break itself. As the fastening portion 5, for example, various films such as plastic films and nylon films, nonwoven fabrics, films obtained by laminating nonwoven fabrics, and the like can be used. The fastening portion 5 of the diaper 1 of this embodiment uses a sheet-like member composed of three layers in which nonwoven fabrics of the same size are laminated on both sides of a plastic film.

The engaging portion 51 is provided on the skin side surface of the fastening portion 5 and can separably engage with the non-skin side surface (specifically, the engaged portion 25 ) of the ventral waist portion 20 . It is a member. As the engaging portion 51, for example, a male member of a hook-and-loop fastener or an adhesive material such as an adhesive sheet can be exemplified. Although the engaging portion 51 of this embodiment has a substantially rectangular shape, it may have an arbitrary shape such as a round shape.

As shown in FIG. 4 and the like, the fastening portion 5 is fixed to the ventral waist portion 20 by a fixing portion F1 and an auxiliary fixing portion F2. The fixing portion F1 and the auxiliary fixing portion F2 of this embodiment are welded portions in which the fastening portion 5 and the ventral waist portion 20 are joined in the thickness direction by thermal welding, ultrasonic welding, or the like. The fastening portion 5 is fixed to the ventral waist portion 20 mainly by the fixing portion F1, and the auxiliary fixing portion F2 assists the fixing by the fixing portion F1.

===How to wear Diaper 1===
The diaper 1 can be worn in multiple ways.
For example, as a general pants-type diaper (see FIG. 1), the wearer's legs are inserted from the waist opening BH into the leg opening LH, and the

waist portions

20 and 30 are pulled up so as to cover the wearer's waist. By doing so, it can be put into a wearing state.

Further, after the diaper is worn as a pants-type disposable diaper as described above, the ventral waist portion 20 is cut by a cutting guide portion (described later), and the engaging portion 51 of the fastening portion 5 is engaged with the ventral waist portion 20 . It can be put into a worn state by putting the garment together to form a waist opening. This makes it possible to adjust the engaging position of the engaging portion 51, making it easier to fit the waist of the wearer.

Furthermore, the abdomen waist portion 20 is cut in advance by the cutting guide portion, and one side in the left and right direction is in the form of a so-called tape type diaper (a state in which the leg openings LH are not formed), and the other side in the left and right direction is pants. It can also be worn in the form of a type diaper (in which leg openings LH are formed).

First, the ventral waist portion 20 is cut at the cutting guide portion, and the leg opening LH on the other side in the left-right direction (in the form of a pants-type diaper) is inserted into the leg opening LH of the wearer's other leg (the wearer's right side in the case of the diaper 1). legs), pull up the diaper 1 to the crotch part of the wearer, and then engage the engaging part 51 of the fastening part 5 with the ventral waist part 20 so as to fit the wearer's waist, By forming the opening around the waist, it becomes a wearing state.

By wearing it in this way, for example, even for infants who have difficulty in flapping their legs and passing both legs through the leg openings LH on both sides of the pants-type disposable diaper, one leg of the wearer can be used. can be passed through the opening LH around the leg, after that, by engaging with the fixing portion 5 (engaging portion 51), the wearing state can be easily made. In addition, when the wearer himself/herself wears the diaper 1, it may be difficult to wear a general tape-type diaper (a diaper having tapes on both sides in the left-right direction) in a toilet or the like. One side of the garment is in a pants-type form, and the other side is in a (tape-type) form provided with the fixing part 5, so that it is possible to easily wear it and easily adjust the fit around the waist.

When removing the used diaper 1 from the wearer's body, the ventral waist portion 20 is separated at the cutting guide portion, one side of the diaper 1 in the left-right direction is removed from the wearer's body, and the other side in the left-right direction is removed. The diaper 1 can be removed from the wearer's body by pulling out the leg on the other side from the leg opening LH.

===About Cutting the Abdominal Waist Section 20===
Cutting of the ventral waist portion 20 will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a diagram illustrating separation of the ventral waist portion 20 and formation of the waist opening. 6A and 6B are diagrams for explaining the operation of cutting the ventral waist portion 20. FIG. FIG. 5 is a diagram for explaining the configuration of a cross section taken along line AA in FIG. 5 and 6 are schematic diagrams, and dimensions and the like are not necessarily accurate.

FIG. 5A is the diaper 1 in a pants-type state shown in FIG. 1 and the like. That is, the ventral waist part 20 is not cut, and the ventral waist part 20 and the back waist part 30 form a continuous waist opening through the

joints

2a and 2b. 5B and 6A show a state in which the tip portion of the fastening portion 5 is grasped and pulled up toward the non-skin side from the state shown in FIG. 5A.

Then, as shown in FIG. 6A, the waist portion 20 is gripped with one hand, and the fastening portion 5 is gripped with the other hand, and pulled outward in the left-right direction, respectively, as shown in FIGS. 5C and 6B. Next, the ventral waist portion 20 is cut along the cutting guide portion and separated into one side and the other side in the left-right direction. A “cutting guide portion” is a guide portion for cutting at least a portion of the ventral waist portion 20 . In the diaper 1, the fixed portion F1 that fixes the abdominal waist portion 20 and the fastening portion 5 functions as a cutting guide portion. Specifically, as shown in FIG. 6A , when the ventral waist portion 20 and the fastening portion 5 are held and pulled in the left-right direction, first, the most tip portion of the cutting guide portion (fixed portion F1) is pulled. The pulling force concentrates on the cutting guide starting point K, which is the end on the distal end side located on the side, and then the inclined part and the cutting guide that slope upward from the cutting guide starting point K of the cutting guide section toward the base end side. A force is transmitted from the starting point K along the sloped portion that slopes downward and toward the base end portion. Then, the ventral waist portion 20 is cut at the other side end CE of the fixing portion F1 in the left-right direction, and the ventral waist portion 20 is divided into one side portion without the fastening portion 5 and the fastening portion. 5 on the other side.

After that, as shown in FIG. 5D , the engaging portion 51 of the fastening portion 5 is engaged with the engaged portion 25 of the ventral waist portion 20 to form the waist opening of the diaper 1 . be. In a state in which the engaging portion 51 is engaged with the engaged portion 25, the one side portion and the other side portion in the left-right direction of the separated ventral waist portion overlap in the front-rear direction (thickness direction). The engaging portion 51 may be engaged with the engaged portion 25 immediately, and the one side portion and the other side portion of the separated ventral waist portion in the left-right direction overlap in the front-rear direction (thickness direction). The engaging portion 51 may be engaged with the engaged portion 25 so that it does not occur. The size of the waist opening of the diaper 1 can be adjusted by adjusting the position at which the engaging portion 51 is engaged.

=== About fixed part F1 ===
In the diaper 1 , one end of the abdominal waist portion 20 and the back waist portion 30 in the left-right direction is joined by a joint portion 2 a, and the base end portion of the fastening portion 5 is fixed to the abdomen waist portion 20 . It is fixed at the part F1. The distal end portion of the fastening portion 5 has an engaging portion 51 that separably engages with the non-skin side surface of the ventral waist portion 20, and a fixing portion F1 that secures the fastening portion 5 and the ventral waist portion 20. At least part of it is separated from the joint 2a in the left-right direction.

As described above, the fastening portion 5 and the fixing portion F1 are portions to which force is applied when forming the waist opening, adjusting the size of the waist opening, or cutting the ventral waist portion 20. . Therefore, by separating at least a part of the fixing portion F1 from the joint portion 2a, the force applied to the fixing portion 5 and the fixing portion F1 due to the movement of the fixing portion 5 causes the ventral waist portion of the joint portion 2a to move. It is possible to reduce the risk of damaging or peeling off the joint between 20 and the dorsal waist part 30. - 特許庁

Even if a part of the fixing portion F1 is spaced apart from the joint portion 2a and a part of the fixing portion F1 overlaps the joint portion 2a in the thickness direction (front-rear direction), the movement of the fastening portion 5 may cause jointing. Although it is possible to reduce joint breakage and peeling of the portion 2a, as shown in FIG. The movement of the fastening portion 5 can further reduce the risk that the bonding of the bonding portion 2a will be damaged or peeled off.

Moreover, it is preferable that the diaper 1 has a cutting guide portion for cutting at least a portion of the abdominal waist portion 20, and the cutting guide portion is provided on the other side of the joint portion 2a in the left-right direction. is preferred. Since the cutting guide portion is provided on the other side of the joint 2a provided on one side in the left-right direction, there is a risk that the joint 2a may be damaged or peeled off due to the force applied when cutting the ventral waist portion 20. can be reduced.

It is preferable that the fastening portion 5 is provided outside the central portion of the lateral waist portion 20 divided into three parts. By providing the fastening portion 5 at a position close to the

joints

2a and 2b, it is possible to reduce the risk of excessive force being applied to the

joints

2a and 2b even when the ventral waist portion 20 is cut.

Moreover, it is preferable that at least a portion of the fixed portion F1 is a cutting guide line. As described above, in the diaper 1 of the present embodiment, the fixed portion F1 functions as a cutting guide portion. As shown, cutting of the ventral waist portion 20 is guided at the end CE on the other side in the left-right direction of the fixing portion F1.
As a result, the diaper 1 does not require additional steps such as the formation of perforations to form the cutting guide portion. It is possible to reduce the risk of breakage or peeling of 2a. A portion of the fixed portion F1 may be the cutting guide wire, or the entire fixed portion F1 may be the cutting guide wire.

As described above, the fastening portion 5 is fixed to the ventral waist portion 20 by the fixing portion F1, and the engaging portion 51 engages the non-skin side of the ventral waist portion 20 in a separable manner. Regarding this fastening portion 5, in the left-right direction, the fastening portion F1 is provided on the other side of the joint portion 2a, and the engaging portion 51 is provided on the other side of the fastening portion F1. It is preferable to have a non-fixed portion D on one side of the fixed portion F1 and on the other side of the joint portion 2a. The non-fixed portion D is a so-called dry edge portion that is not fixed to the ventral waist portion 20, and is a portion that is not provided with joining means such as adhesive or welding. In FIGS. 4 and 7, the unfixed portion D is indicated by a hatched portion slanted downward to the right. FIG. 7 is an enlarged view of the ventral waist portion 20 in FIG.

As shown in FIG. 4, the non-fixed portion D is provided between the fixed portion F1 and the joint portion 2a in the left-right direction. A portion between the fixed portion F1 and the joint portion 2a in the horizontal direction is a portion to which force is applied in the movement and engagement of the fastening portion 5, so at least a part of this portion is covered with the non-fixed portion D. Thus, it is possible to reduce the risk of damage to the portion between the fixed portion F1 and the joint portion 2a.

As shown in FIGS. 4 and 7, the ventral waist portion 20 includes a stretchable member 23 that stretches in the left-right direction, and includes a stretchable region S that stretches in the left-right direction and a non-stretchable region N that does not stretch in the left-right direction. The stretchable region S of the ventral waist portion 20 refers to the stretchable region of the stretchable member 23 . Specifically, in the left-right direction, the non-stretchable region N is a center portion and a region from the center portion to one side end of the fastening portion 5 . The stretchable region S has a one-side stretchable region Sa provided on one side and the other-side stretchable region Sb provided on the other side in the left-right direction. The area up to the side edge of the side is the one-side stretchable area Sa, and the area from the joint 2b on the other side to the central portion is the other-side stretchable area Sb.

When the fastening portion 5 is fixed to the ventral waist portion 20 by the fixing portion F1 and the engaging portion 51 is separably engaged with the non-skin side surface of the ventral waist portion 20, the joint portion It is preferable to have a one-side elastic region Sa that expands and contracts in the left-right direction between 2a and the fixed portion F1. The portion between the joint portion 2a and the fixed portion F1 in the left-right direction is a portion to which force is likely to be applied when the fastening portion 5 is moved, and is also a portion that is likely to be damaged. Therefore, by providing a one-side elastic region Sa that expands and contracts in the horizontal direction between the joint portion 2a and the fixed portion F1 in the horizontal direction, the expansion and contraction of the one-side elastic region Sa buffers the force due to the movement of the fastening portion 5. This makes it easier to reduce the risk of damage to the portion between the joint portion 2a and the fixed portion F1. In addition, it is more preferable to arrange the one-side stretchable region Sa so as to be adjacent to the other side of the joint portion 2a in the left-right direction. Adjacent to the joint 2a, the one-side stretchable region Sa can easily absorb the force applied to the joint 2a, and can easily reduce breakage and peeling of the joint 2a.

Further, when the fastening portion 5 is fixed to the ventral waist portion 20 by the fixing portion F1, and the engaging portion 51 is separably engaged with the non-skin side surface of the ventral waist portion 20, the joint portion It is preferable to have a one-side non-stretchable region Na that does not stretch or shrink in the left-right direction between 2a and the fixed portion F1. In FIGS. 4 and 7, the one-side non-stretchable region Na is indicated by a dotted hatched region. The one-side non-stretchable region Na of this embodiment is part of the non-stretchable region N and is continuous with the non-stretchable region N. As shown in FIG. The non-stretchable region N is also a region that is provided in the central portion of the diaper 1 in the left-right direction and does not stretch in the left-right direction. When the fastening portion 5 is moved, the one-side non-stretchable region Na is provided in the horizontal direction between the joint portion 2a and the fixed portion F1 in the horizontal direction, so that the force for moving the fastening portion 5 can be applied directly. In addition, it becomes easy to apply the force to the fastening portion 5, and it becomes easy to engage the fastening portion 5 and adjust the size of the opening around the waist by the fastening portion 5.例文帳に追加In addition, it is more preferable to arrange the one-side non-stretchable region Na so as to be adjacent to one side of the fixed portion F1 in the left-right direction. The one-side non-stretchable region Na is adjacent to the fixing portion F<b>1 , so that force for moving the fastening portion 5 can be easily applied directly to the fastening portion 5 .

Furthermore, like the diaper 1, the one-side stretchable region Sa (stretchable region) and the one-side non-stretchable region Na of the ventral waist portion 20 are stretched from the other side of the joint 2a in the left-right direction. More preferably, the one-side stretchable region Sa is provided so as to be adjacent to the fixed portion F1, and the one-side non-stretchable region Na is provided so as to be adjacent to the fixed portion F1 from one side. , the one-side stretchable region Sa is adjacent to the joint 2a located on one side in the left-right direction from the other side in the left-right direction (the left side in FIG. 4), and the one-side non-stretchable region Na , and the fixed portion F1 positioned on the other side of the joint portion 2a from one side in the left-right direction (the right side in FIG. 4). , while making it easier to buffer the force due to the movement of the fastening portion 5 and reducing the risk of damage to the portion between the joint portion 2a and the fixing portion F1, in the left-right direction, one side non-adjacent to the fixing portion F1. The stretchable region Na makes it easier to apply a force for moving the fastening portion 5 directly to the fastening portion 5, and facilitates engagement of the fastening portion 5 and adjustment of the size of the waist opening by the fastening portion 5. Become.

As shown in FIG. 4, the one-side stretchable region Sa and the one-side non-stretchable region Na provided between the joint portion 2a and the fixed portion F1 in the left-right direction of the ventral waist portion 20 is longer than the length of the one-side non-stretchable region Na in the left-right direction. While making it easy to apply force for moving the fastening portion 5 directly to the fastening portion 5, it becomes easy to buffer the force applied to the joint portion 2a when the fastening portion 5 is moved, thereby preventing damage to the fastening portion 2a. It becomes easier to reduce peeling and peeling.

Further, as described above, in the left-right direction, the fixing portion F1 is provided on the other side of the joint portion 2a, and the engaging portion 51 is provided on the other side of the fixing portion F1. It has a non-fixed portion D on the side and on the other side of the joint portion 2a. As shown in FIG. 4 and the like, when the diaper 1 is viewed from the abdominal waist portion 20 side in the front-rear direction, it is more preferable to have a portion where the one-side non-stretchable region Na and the non-fixed portion D overlap. When the one-side stretchable region Sa and the one-side non-stretchable region Na are adjacent to each other in the left-right direction as in the diaper 1, it is known to cut the stretchable member 23 to form the one-side non-stretchable region Na. there is When viewed from the ventral waist portion 20 side, the tip of the cut stretchable member 23 may exist in a region overlapping the one-side non-stretchable region Na, but the one-side non-stretchable region Na and the non-fixed portion D Having the overlapping portion makes it easier for the non-fixed portion D to cover the distal end portion of the elastic member 23, so that the appearance of the diaper 1 can be improved.

As shown in FIGS. 3, 7, etc., the ventral waist section 20 includes a ventral waist stretchable region formed by a stretchable member 23 that stretches in the left-right direction, and the back waist section 30 includes a stretchable member 33 that stretches in the left-right direction. with a dorsal waist elastic area. The ventral waist stretchable region is a stretchable region of the stretchable member 23 in the ventral waist portion 20, and specifically refers to the stretchable region S (Sa, Sb) shown in FIG. The back-side waist elastic region refers to a region from the joint 2a on one side to the joint 2b on the other side in the left-right direction. For the ventral waist portion 20 and the back waist portion 30, the force per unit area for extending the ventral waist elastic region by a predetermined distance is greater than the force for extending the back waist elastic region by a predetermined distance per unit area. is preferred.

By providing the ventral waist part 20 with the elastic member 23 and the back side waist part 30 with the elastic member 33, the fit to the wearer's waist can be improved. In addition, if the force that stretches the dorsal waist elastic region per unit area is greater than or equal to the force that stretches the ventral waist elastic region per unit area, for example, the ventral waist portion 20 is cut and guided by the end of the fixing portion F1. CE), when the wearer tries to wear the diaper 1 while lying on his/her back, the dorsal waist part 30 excessively shrinks and is fixed to the ventral waist part 20. The fastening part 5 may be pulled under the wearer's buttocks by pulling the fastening part 5 to the back side of the wearer, making it difficult to operate the fastening part 5 . On the other hand, by making the force per unit area that stretches the ventral waist elastic region larger than the force per unit area that stretches the back waist elastic region, the risk of excessive contraction of the back waist part 30 can be prevented. It is possible to reduce the possibility that the fastening portion 5 will be located on the back side of the wearer when wearing the garment, thereby improving the operability of the fastening portion 5.例文帳に追加

A comparison between the force per unit area that stretches the ventral waist elastic region and the force per unit area that stretches the dorsal waist elastic region can be performed by a known method, for example, the following method. can. First, the elastic region S of the abdominal waist portion 20 is cut out from the diaper 1 and cut into a predetermined size (unit area) to obtain a test piece A. Similarly, the elastic region of the dorsal waist part 30 is cut out and cut to the same size as the test piece A to obtain a test piece B. These test pieces A and B are clamped by chucks of a tensile tester (Instron) with a length (for example, 25 mm) in the left-right direction when relaxed as a measurement section. Then, at a predetermined speed (e.g., 100 mm/min), the measurement section is stretched to a predetermined length (e.g., 50 mm) in both left and right directions, and then at a speed of 100 mm/min. Shrink until it returns to (25 mm). This cycle is repeated multiple times (for example, twice), and in the multiple cycles, the tensile load when extended to a predetermined length is measured, and the force to extend the test piece A and the test piece B is calculated. compare. If the stretchable range of the test piece is narrow and cannot be stretched to a predetermined length, the predetermined length of the stretched measurement section may be shortened (for example, 50 mm to 40 mm).

When the diaper 1 is viewed from the abdominal waist portion 20 side, the elastic member 23 has a portion overlapping with the leg elastic member 17 provided on the absorbent body 10 on the other side of the abdominal waist portion 20 in the left-right direction. is preferred. Regardless of the cutting of the ventral waist part 20, on the other side in the horizontal direction, the stretchability of the stretchable member 23 that stretches in the horizontal direction and the stretchability of the leg stretchable member 17 that stretches in the vertical direction can be easily interlocked.

Further, it is preferable that the force for separating the fixed portion F1 is greater than or equal to the force for separating the joint portion 2a. The movement of the fastening portion 5 can reduce the risk that the bonding portion 2a will be separated, and the movement of the fastening portion 5 can further reduce the risk of separation of the fixing portion F1. The force for separating the fixed portion F1 and the force for separating the joint portion 2a can be measured using, for example, a tensile tester (for example, a tensile tester manufactured by Instron).

As shown in FIG. 2, when the diaper 1 in the natural state is viewed from the abdominal waist portion 20 side in the front-rear direction, the vertical length T5 of the fastening portion 5 is equal to the vertical length T5 of the abdomen waist portion 20. It is preferred to have a portion longer than the length T20. In the diaper 1 of this embodiment, the vertical length (T5) of the base end portion of the fastening portion 5 is longer than the vertical length (T20) of the substantially rectangular abdominal waist portion 20 . Since the fastening part 5 is a part to be engaged, it is preferable to use a material having higher rigidity than the ventral waist part 20 .

In the diaper 1 in the natural state, a portion (base end portion of the fastening portion 5) in which the vertical length of the fastening portion 5 is longer than the vertical length of the ventral waist portion 20 is a portion that is easy to grasp, and Since the fastening part 5 to be gripped has higher rigidity than the ventral waist part 20, damage and peeling can be reduced more easily than when the ventral waist part 20 and the joint part 2 are gripped.

At least part of the fixing portion F1 is a cutting guide portion, and the fixing portion 5 includes a fixing means region J provided with fixing means for forming the fixing portion F1. The length TJ in the direction is preferably longer than the length T2 of the joint 2a in the vertical direction (TJ>T2). Since the vertical length of the joint portion 2a is substantially the same as the vertical length of the ventral waist portion 20 to be cut, the vertical length TJ of the fixing means region J is equal to that of the ventral waist portion 20. By making it longer than the length in the vertical direction, when cutting the ventral waist part 20 with the cutting guide part (end CE of the fixing part F1) as a boundary, it becomes easy to cut from the top end to the bottom end of the ventral waist part 20, Easier to separate completely.

The fixing portion F1 of the diaper 1 of this embodiment is a welded portion in which the abdominal waist portion 20 and the fastening portion 5 are welded together. It is a melted fusion zone. As shown in FIG. 4 , when viewed from the ventral waist portion 20 side, the portion of the fixing means region J that overlaps with the ventral waist portion 20 forms a fixing portion F1, but is above the ventral waist portion 20 . A portion J1 and a portion J2 below the ventral waistline portion are not fixed to the ventral waistline portion 20, and are portions where only the fastening portion 5 is melted. The fixed portion F1 and the upper portion J1 are continuous, and the fixed portion F1 and the lower portion J2 are continuous. Therefore, the portion J1, the fixed portion F1 functioning as a cutting guide portion, and the portion J2 are continued from the upper side to the lower side, so that the ventral waist portion 20 is separated from the cut guide portion (the end CE of the fixed portion F1) as a boundary. It is easy to cut from the upper end to the lower end of the ventral waist part 20 when cutting the .

The diapers 1 are generally distributed in a stored state in which one diaper 1 or a plurality of diapers 1 are stored in a package (not shown). The diaper 1 in the accommodated state is in a state in which the diaper 1 in the natural state shown in FIG. 1 is substantially the same as the diaper 1 in its natural state when viewed from the abdominal waist portion 20 side in the front-rear direction. do.

Conventional diapers in a housed state are provided with joints at both side ends in the left-right direction of the diaper. There is a risk that the joint may be damaged or detached.

On the other hand, when the diaper 1 is housed in the packaging body, the fastening portion 5 provided on the abdominal waist portion 20 extends from the rear side to the front side in the front-rear direction on one side in the left-right direction. folded back. When the diaper 1 is viewed from the side of the abdominal waist portion 20 in the front-rear direction, as shown in FIG. is preferably positioned on the frontmost side of the diaper 1 . That is, in the diaper 1 in the housed state, the

waist portions

20 and 30 are crushed in the thickness direction, and the folded portions are formed at both side ends of the waist opening in the left-right direction. The outer sides of the folded portions of the portions 20, 30) are covered with the fastening portion 5 folded back from the rear side to the front side.

Since the fastening portion 5 is a portion to be engaged, it usually has higher rigidity than the

waist portions

20 and 30 . Since the folded fastening portion 5 is provided at one end in the left-right direction of the diaper 1 in the accommodated state, when the diaper 1 in the state accommodated in the package (accommodated state) is taken out, Since the fixing portion 5 can be grasped and removed instead of the joint portion 2a, the risk of the joint portion 2a being damaged or peeled off can be reduced.

===Other Embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit and interpret the present invention. Further, the present invention can be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof.

In the above-described embodiment, the fastening portion 5 and the ventral waist portion 20 are fixed by the fixing portion F1, and the engaging portion 51 is engaged with the non-skin side surface of the ventral waist portion 20. However, the present invention is not limited to this. do not have. The fastening portion 5 and the ventral waist portion 20 may be fixed by the fixing portion F<b>1 and the engaging portion 51 may be engaged with the non-skin side surface of the back waist portion 30 . The fastening portion 5 and the dorsal waist portion 30 are fixed by the fixing portion F1, and the engaging portion 51 is engaged with the non-skin side surface of the ventral waist portion 20 or the non-skin side surface of the dorsal waist portion 30. can be anything.

In the above-described embodiment, the fastening portion 5 is provided on one side of the diaper 1 in the left-right direction, that is, on the wearer's left side, but the present invention is not limited to this. The fastening portion 5 may be provided on the other side of the diaper 1 in the left-right direction, that is, on the wearer's right side. For example, if the person who wants to wear the diaper is right-handed, by providing the fastening portion 5 on one side (left side of the wearer) in the left-right direction of the diaper 1, the fastening portion for the person who wants to wear the diaper 1 is provided. 5 can be improved. In addition, when the wearer himself/herself wears the diaper 1 and the wearer is right-handed, by providing the fastening portion 5 on the other side of the diaper 1 in the left-right direction, the fastening portion 5 can be worn by the wearer. Improved operability.

In the above-described embodiment, one side of the diaper 1 in the left-right direction is provided with the fastening portion 5 fixed by the fixing portion F1 separated from the joint portion 2a, and the other side in the left-right direction is the joint portion 2b, which is the girth portion. Although the configuration is such that the fastening portion 5 is not provided while the 20 and 30 are joined, the configuration is not limited to this. On one side of the diaper 1 in the left-right direction, a fastening portion 5 fixed by a fixing portion F1 separated from the joint portion 2a is provided, and on the other side in the left-right direction, a stopper fixed by a fixing portion separated from the joint portion 2b is provided. A so-called fastening tape may be provided on either one of the

waist portions

20 and 30 without providing an attachment portion, or without providing the joint portion 2b on the other side in the left-right direction.

In the above-described embodiment, the fixed portion F1 that fixes the ventral waist portion 20 and the fastening portion 5 is assumed to function as a cutting guide portion, but it is not limited to this. Instead of using the fixed portion F1 as the cutting guide portion, a cutting guide portion capable of guiding the cutting of the ventral waist portion 20 may be provided, such as by providing perforations or providing a low basis weight portion. When the cutting guide portion is provided at a position different from that of the fixing portion F1, the cutting guide portion is preferably provided closer to the distal end portion of the fastening portion 5 than the fixing portion F1. Furthermore, the diaper 1 does not necessarily have to have a cutting guide. A wearer or the like may cut a desired position of the ventral waist portion 20 with a knife or hand.

In the above-described embodiment, the diaper, in which the abdominal waist portion 20 and the back waist portion 30 are separated and are separate members, is exemplified. , the ventral waist portion 20 and the back waist portion 30 may be one continuous member.

1 diapers (disposable diapers, absorbent articles),
2a, 2b junctions,
5 fastening part,
10 absorbent body, 11 absorbent body, 11A absorbent core,
12 top seat, 13 second seat, 14 side seat,
15 back sheet, 16 exterior sheet,
17 Leg expansion/contraction member, 18 Leakage prevention wall expansion/contraction member,
20 ventral girth (one side girth),
21 skin-side sheet, 22 non-skin-side sheet, 23 elastic member,
25 engaged portion,
30 dorsal waist part (other side waist part),
31 skin-side sheet, 32 non-skin-side sheet, 33 elastic member,
51 engagement portion,
BH waist opening, LH leg opening,
F1 fixed part, F2 auxiliary fixed part,
K cleavage induction origin,
S stretching region,
Sa one side stretchable region (stretchable region), Sb other side stretchable region,
N non-stretchable region;
Na one side non-stretchable area (non-stretchable area)

Claims

having a vertical direction, a horizontal direction, and a front-back direction that are orthogonal to each other;
An absorbent article having a one side waist portion, a waist portion having the other side waist portion, and a crotch portion,
At least one side end of the one-side waistline portion and the other-side waistline portion in the left-right direction is joined by a joint,
having a fastening portion,
A base end portion of the fastening portion is fixed to the waist portion by a fixing portion,
The tip portion of the fastening portion has an engaging portion that separably engages with the non-skin side surface of the waist portion,
The absorbent article, wherein at least part of the fixed portion is separated from the joint portion in the left-right direction.
The absorbent article according to claim 1,
The absorbent article, wherein all of the fixed portions are separated from the joint portions in the left-right direction.
The absorbent article according to claim 1 or 2,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The absorbent article, wherein the engaging portion separably engages with the non-skin side surface of the one waist portion.
The absorbent article according to any one of claims 1 to 3,
The waist part has a cutting guide part for guiding cutting of at least a part of the waist part,
In the horizontal direction,
The absorbent article, wherein the cutting guide portion is provided on the other side of the joint portion.
The absorbent article according to any one of claims 1 to 4,
An absorbent article, wherein at least a portion of the fixing portion also serves as a cutting guide portion when at least a portion of the waist portion is cut.
The absorbent article according to any one of claims 1 to 5,
In a stored state in which the absorbent article is stored in a package,
The fastening portion is folded back from the rear side in the front-rear direction toward the front side in the front-rear direction on the one side in the left-right direction,
When the absorbent article is viewed from the one side waistline portion side in the front-rear direction, the base end portion of the fastening portion is located on the rearmost side of the absorbent article, and the tip of the fastening portion An absorbent article, wherein the portion is located on the frontmost side of the absorbent article.
The absorbent article according to any one of claims 1 to 6,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
In the horizontal direction,
The fixing portion is provided on the other side of the joint portion,
The engaging portion is provided on the other side of the fixing portion,
The fastening part has a non-fixed part that is not fixed to the one side waist part and is provided on the one side of the fixed part and on the other side of the joint part. Goods.
The absorbent article according to any one of claims 1 to 7,
In a natural state, when the absorbent article is viewed from the one side waistline portion side in the front-rear direction,
The absorbent article, wherein the length of the fastening portion in the vertical direction has a portion longer than the length of the one-side waistline portion in the vertical direction.
The absorbent article according to claim 8,
At least a portion of the fixing portion is also a cutting guide portion when cutting at least a portion of the waist portion,
The fastening portion includes a fixing means area provided with fixing means for forming the fixing portion,
The absorbent article, wherein the length of the fixing means region in the vertical direction is longer than the length of the joint portion in the vertical direction.
The absorbent article according to any one of claims 1 to 9,
The absorbent article, wherein the force for separating the fixed portions is greater than or equal to the force for separating the joint portions.
The absorbent article according to any one of claims 1 to 10,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
The absorbent article, wherein the one-side waistline portion has an elastic region that expands and contracts in the left-right direction between the joint portion and the fixing portion in the left-right direction.
The absorbent article according to any one of claims 1 to 11,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
The absorbent article, wherein the one-side waistline portion has a non-stretchable region that does not stretch or contract in the left-right direction between the joint portion and the fixing portion in the left-right direction.
The absorbent article according to any one of claims 1 to 12,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
The one-side waist portion, in the left-right direction,
having a stretchable region that stretches in the left-right direction and a non-stretchable region that does not stretch in the left-right direction between the joint portion and the fixed portion;
The elastic region is adjacent to the joint from the other side,
The absorbent article, wherein the non-stretchable region is adjacent to the fixed portion from the one side.
The absorbent article according to any one of claims 1 to 13,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
The one-side waist portion has a stretchable region that stretches in the left-right direction and a non-stretchable region that does not stretch in the left-right direction between the joint portion and the fixing portion in the left-right direction,
The absorbent article, wherein the length of the stretchable region in the left-right direction is longer than the length of the non-stretchable region in the left-right direction.
The absorbent article according to any one of claims 12 to 14,
The fastening portion is fixed to the one side waist portion by the fixing portion,
The engaging portion separably engages with the non-skin side surface of the one side waist portion,
In the horizontal direction,
The fixing portion is provided on the other side of the joint portion,
The engaging portion is provided on the other side of the fixing portion,
The fastening portion has a non-fixed portion that is not fixed to the one-side waistline portion and is provided on the one side of the fixed portion and on the other side of the joint portion,
An absorbent article, comprising a portion where the non-stretchable region and the non-fixed portion overlap when the absorbent article is viewed from the one waist portion side in the front-rear direction.
The absorbent article according to any one of claims 1 to 15,
The one-side waist portion includes a one-side waist elastic region that expands and contracts in the left-right direction,
The other side waist portion includes the other side waist elastic region that expands and contracts in the left-right direction,
In the horizontal direction,
The force that extends the one-side waist elastic region per unit area by a predetermined distance is
The absorbent article, wherein the force per unit area is greater than the force for extending the other side waist elastic region by a predetermined distance.