JP7358684B1 - absorbent articles - Google Patents

Abstract

An absorbent article (1) having a vertical direction, a horizontal direction, and a front-back direction that are orthogonal to each other, and has a waist region including a waist region on one side (20) and a waist region on the other side (30), and a crotch region. At least one end in the left-right direction of the one side waist portion (20) and the other side waist portion (30) are joined at the joint portions (2a, 2b) and have a fastening portion (5). The proximal end of the fastening part (5) is fixed to the waist part (20, 30) by the fastening part (F1), and the distal end of the fastening part (5) is fixed to the waist part (20, 30). ), and at least a part of the fixing part (F1) is also a cutting guide part when cutting at least a part of the waist part. It is characterized by

Description

The present invention relates to absorbent articles.

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

Japanese Patent Application Publication No. 5-317356

The disposable diaper of Patent Document 1 includes a fastening piece that can be attached to the front body, a joint where each side of the front body and the back body are integrally joined, and a perforation-like cutting line adjacent to the joint. However, there is a desire for a disposable diaper that is formed through a simpler process and can be cut at the front end (rear end end).

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an absorbent article that eliminates the need to separately provide a fixing part for fixing a fastening part and a cutting guiding part. It's about doing.

The main invention for achieving the above-mentioned object is an absorbent absorbent having vertical, horizontal, and front-back directions that are orthogonal to each other, and has a waist portion including a waist portion on one side and a waist portion on the other side, and a crotch portion. In the sexual article, at least one end in the left-right direction of the one side waist portion and the other side waist portion are joined at a joint portion, and have a fastening portion, and the fastening portion has a fastening portion. The proximal end portion is fixed to the waist portion by a fixing portion, and the distal end portion of the fastening portion has an engaging portion that separably engages with a non-skin side surface of the waist portion, and the fixing portion The absorbent article is characterized in that at least a portion of the absorbent article also serves as a cutting guide when cutting at least a portion of the waist portion.

Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

An advantage of the present invention is that it is possible to provide an absorbent article that does not require separate provision of a fixing part and a cutting guiding part.

FIG. 1 is a perspective view of the disposable diaper 1 in a worn state according to the first embodiment. FIG. 2 is a plan view of the diaper 1 in a natural state, viewed from the ventral waist portion 20 side. FIG. 2 is a plan view of the diaper 1 in the unfolded and stretched state, viewed from the non-skin side. 4 is an enlarged view of portion X in FIG. 3. FIG. FIG. 4 is a diagram illustrating separation of the abdominal waist portion 20 and formation of a waist opening. FIG. 3 is a diagram illustrating an operation of cutting the abdominal girth portion 20. FIG. 4 is an enlarged view of the ventral waist portion 20 in FIG. 3. FIG. It is an enlarged view of the fixed part F1 and the auxiliary fixed part F2. FIG. 9A is a diagram illustrating the cutting guide portion of the diaper 1. FIG. FIG. 9B is a diagram illustrating a cutting guidance section using perforations. It is a figure explaining the cutting in a cutting guidance part. It is a figure explaining the modification of a cutting guidance part. It is a figure explaining the modification of a cutting guidance part. It is a figure explaining the modification of a cutting guidance part. FIG. 2 is a perspective view of a disposable diaper 1 in a worn state according to a second embodiment. FIG. 2 is a plan view of the diaper 1 in a natural state, viewed from the ventral waist portion 20 side. FIG. 2 is a plan view of the diaper 1 in the unfolded and stretched state, viewed from the non-skin side. 17 is an enlarged view of portion X in FIG. 16. FIG. FIG. 4 is a diagram illustrating separation of the abdominal waist portion 20 and formation of a waist opening. FIG. 3 is a diagram illustrating an operation of cutting the abdominal girth portion 20. FIG. FIG. 20A is a diagram illustrating the cutting guide portion of the diaper 1. FIG. FIG. 20B is a diagram illustrating a cutting guidance section using perforations. It is an enlarged view of the melting zone F1 and the auxiliary melting zone F2. 17 is an enlarged view of the ventral waist portion 20 in FIG. 16. FIG. It is a figure explaining the modification of a cutting guidance part. It is a figure explaining the modification of a cutting guidance part.

From the description of this specification and the attached drawings, at least the following matters will become clear.
An absorbent article having an up-down direction, a left-right direction, and a front-back direction that are perpendicular to each other, and has a waist section and a crotch section, each having a waist section on one side and a waist section on the other side. At least one end of the other side waistline in the left-right direction is joined at a joint and has a fastening part, and a base end of the fastening part is fixed to the waistline by a fixing part. The distal end portion of the fastening portion has an engaging portion that separably engages with a non-skin side surface of the waist portion, and at least a portion of the fixing portion is attached to at least a portion of the waist portion. This absorbent article is characterized in that it also serves as a cutting guide when cutting the absorbent article.

According to such an absorbent article, there is no need to separately provide the fixing part and the cutting guide part, so it is possible to provide an absorbent article with a simplified manufacturing process.

In such an absorbent article, when the absorbent article is viewed from the one side waistline side in the front-rear direction, the fastening part is located in an adjacent region adjacent to the fixing part from the distal end side of the fastening part. It is desirable that the lowest weight per unit area of the garment part is greater than the highest weight per unit area of the waist part.

According to such an absorbent article, it is easier to separate the waist part at the cutting guide part than at the fastening part, and the absorbent article can form a waist opening by engaging the fastening part with the separated waist part. It becomes easier to treat it as a sex object.

In such an absorbent article, the waist portion is formed of one or more waist circumference sheet members, the fastening portion is formed of one or more fastening portion sheet members, and the waist portion is formed of one or more fastening portion sheet members, and the When looking at the absorbent article from the one side waistline side in , the smallest of the one or more fastening part sheet members in the adjacent region adjacent to the fixing part from the tip end side of the fastening part. It is desirable that the weight per unit area is greater than the highest weight per unit area of the one or more girth sheet members.

According to such an absorbent article, in the fixing part, the weight per unit area of the fastening part sheet member is smaller than the weight per unit area of the waist part sheet member, which is the highest, in the cutting guide part. The waist sheet member is easier to cut than the fastening part sheet member, and the absorbent article can be easily formed with a waist opening by engaging the fastening part to the waist part separated by cutting.

In such an absorbent article, an end of the cutting guide section closest to the distal end of the fastening section is a cutting guide starting point, and the cutting guide section includes: It is desirable to have an inclined part that faces toward the base end side and is inclined with respect to the vertical direction.

According to such an absorbent article, when a force for cutting is applied to the cutting guide part, the force tends to concentrate on the cutting guide starting point, and the applied force is transmitted from the cutting guide starting point to the inclined part. This makes it easier to cut the waist portion into a shape along the cutting guide portion.

In such an absorbent article, an end of the cutting guide section closest to the distal end of the fastening section is the cutting guide starting point, and the cutting guide section is arranged upward from the end closest to the distal end of the fastening section. It is desirable to have an upper sloped part that slopes toward the proximal end side, and a lower sloped part that slopes downward from the end closest to the tip side and toward the base end side.

According to such an absorbent article, when a force for cutting is applied to the cutting guide part, the force tends to concentrate at the cutting guide starting point, and the applied force is transferred from the cutting guide starting point to the upper inclined part. It can be easily transmitted to the lower sloped part, making it easier to cut.

In such an absorbent article, it is preferable that among the angles formed by the upper sloped part and the lower sloped part, the angle on the base end side in the left-right direction is an obtuse angle.

According to such an absorbent article, cutting is facilitated by the cutting guide section inclined from the cutting guide starting point, and cutting is made easier than when the angle formed by the upper inclined part and the lower inclined part on the proximal end side is an acute angle. The length of the guide portion in the left and right direction can be shortened.

In such an absorbent article, it is preferable that among the angles formed by the upper slope part and the lower slope part, the angle on the base end part side in the left-right direction is an acute angle.

According to such an absorbent article, when a force for cutting is applied to the cutting guiding part, the angle between the upper inclined part and the lower inclined part on the proximal end side is an obtuse angle. , it becomes easier to transmit the force concentrated at the cutting guidance starting point to the upper inclined part and the lower inclined part, and it becomes easier to perform cutting at the cutting guiding part.

It is preferable that such an absorbent article has an absorbent core that absorbs liquid, and that the cutting guidance starting point is provided on the one side of the absorbent core in the left-right direction.

According to such an absorbent article, since the absorbent core is a part that is highly rigid and difficult to break, the waistline can be easily cut by cutting one side of the absorbent core in the left-right direction of the waistline. be able to.

In such an absorbent article, it is desirable that the cutting guidance starting point overlap the engaging portion in the up-down direction.

According to such an absorbent article, when cutting with the cutting guide part, the engaging part of the fastening part is often grasped, so it becomes easier to transmit the force applied to the fastening part to the cutting guide starting point. , the cutting guide section facilitates cutting.

In such an absorbent article, it is preferable that in the up-down direction, the cutting guide part is continuous from the upper end of the waist part where the fixing part is provided to the lower end.

According to such an absorbent article, the waist portion can be easily cut along the cutting guide portion.

Such an absorbent article includes an auxiliary fixing part that assists in fixing the fastening part and the waist part provided with the fixing part, and the auxiliary fixing part is arranged so that the cutting guide part It is desirable that the fixing portions be disposed intermittently in the vertical direction on the base end side of the fastening portion.

According to such an absorbent article, the auxiliary fixing part strengthens the fixation of the fastening part to the waist part, and by arranging the auxiliary fixing parts intermittently, the waist part is cut from the auxiliary fixing part as a starting point. It can reduce the fear of being exposed.

In such an absorbent article, in the fastening part, the maximum length in the left and right direction from the fixing part to the end on the distal end side is the maximum length in the left and right direction from the fixing part to the end on the base end side. It is desirable that the length be longer than the maximum length in the direction.

According to such an absorbent article, the maximum length in the left-right direction from the fixed part to the end on the distal end side is shorter than the maximum length in the left-right direction from the fixed part to the end on the proximal end side. Since it becomes easier to grasp the tip end side of the fastening part, it becomes easier to perform operations on the fastening part such as cutting the waist portion and engaging the engaging part.

In such an absorbent article, it is preferable that the cutting guiding part is a welded part in which the waist part and the fastening part are welded together.

According to such an absorbent article, since the cutting guide portion is a welded portion, it is possible to reduce the possibility that the waist portion is inadvertently torn at the cutting guide portion against intention.

In such an absorbent article, in the front-back direction, the melting point of the member of the waist portion located closest to the fastening part in the front-back direction is higher than that of the member of the fastening part in the front-back direction. It is desirable that the melting point is lower than the melting point of the member located closest to the waist.

According to such an absorbent article, when welded, materials with a low melting point melt more easily, so by making the waist part with a lower melting point more likely to melt, it is possible to fix the waist part at the cutting guide part. By making it easier to melt the part side member, it is possible to easily cut the waist part.

Such an absorbent article has an absorbent core that absorbs liquid, and the fastening part is fixed to the one side waistline part by the fixing part, and the cutting guide part is fixed in the left-right direction. , is preferably provided between the joint portion and the absorbent core.

According to such an absorbent article, since the absorbent core is a part that is highly rigid and difficult to break, the waistline can be easily cut by cutting one side of the absorbent core in the left-right direction of the waistline. be able to.

In such an absorbent article, it is desirable that all of the fixing portions be the cutting guide portions.

According to such an absorbent article, it becomes easy to cut the waist portion along the fixed portion.

In such an absorbent article, in the waist portion provided with the fixing portion, a portion extending a predetermined distance from the cutting guide portion toward the tip end of the fastening portion is such that the waist portion extends in the left-right direction. A non-stretchable region that does not stretch or contract is desirable.

According to such an absorbent article, in order to prevent the waist portion from elongating due to the force applied when cutting the waist portion, it becomes easier to apply force for cutting the waist portion to the cutting guide portion.

In such an absorbent article, an adhesive is applied to a portion of the waist portion provided with the fixing portion at a predetermined distance from the cutting guide portion toward the tip end of the fastening portion. This is desirable.

According to such an absorbent article, the rigidity of the waist portion is higher than when no adhesive is applied, so it becomes easier to apply force for cutting the waist portion to the cutting guide portion.

According to the description of the present specification and the attached drawings, an absorbent article having vertical directions, horizontal directions, and front-back directions that are orthogonal to each other, and has a waist portion including a waist portion on one side and a waist portion on the other side, and a crotch portion. Both end portions of the one side waistline portion and the other side waistline portion are respectively joined at a joint portion and have a fastening portion, and a base end portion of the fastening portion is attached to the waistline portion. The distal end portion of the fastening portion has an engaging portion that separably engages with the non-skin side surface of the one side waistline portion, and the waistline portion has at least a portion of the waistline portion. It has a cutting guiding part when cutting, the cutting guiding part is provided at a different position from the joint parts provided at the both end parts in the left and right direction, and the cutting guiding part This is an absorbent article characterized in that at least a part of the absorbent article is a melted part.

According to such an absorbent article, since the melted part is the cutting guide part, it is possible to reduce the risk of the absorbent article being torn unintentionally.

In such an absorbent article, the waist portion includes a plurality of auxiliary melting portions, and the waist portion cut using the cutting guide portion connects the engaging portion to the non-skin side of the one side waist portion. A waist opening can be formed by engaging with the waist opening, and in the direction along the waist opening, the plurality of auxiliary melting parts are closer to the proximal end of the fastening part than the cutting guide part. Preferably, the plurality of auxiliary melting parts are provided at positions, and the plurality of auxiliary melting parts have at least a portion of the waist part melted, and are arranged intermittently in the vertical direction.

According to such an absorbent article, it is possible to guide the cutting of the waist portion with the cutting guiding portion and reduce the possibility that the waist portion is cut at an unintended position with the auxiliary melting portion.

In such an absorbent article, it is desirable that at least some of the plurality of auxiliary melting parts have a length in the left-right direction that is longer than a length in the up-down direction.

According to such an absorbent article, the risk of breakage at the auxiliary melting section can be easily reduced in response to forces applied to the waist portion from the left and right directions.

In such an absorbent article, it is preferable that the cutting guide section is continuous in the vertical direction from the upper end to the lower end of the waist portion where the cutting guide section is provided.

According to such an absorbent article, while reducing the risk of unintentional tearing due to the cutting guidance part of the melted part, when cutting the waist part, it is possible to completely separate the waist part from the upper end to the lower end. It becomes easier.

In such an absorbent article, it is desirable that the cutting guide section be inclined with respect to the vertical direction.

According to such an absorbent article, the risk of unintentional tearing at the cutting guiding part can be reduced compared to when the cutting guiding part is parallel to the vertical direction.

In such an absorbent article, an end of the cutting guide section closest to the distal end of the fastening section is the cutting guide starting point, and the cutting guide section is arranged upward from the end closest to the distal end of the fastening section. and an upper sloped part that slopes toward the proximal end side, and a lower sloped part that slopes downward from the end closest to the distal end and toward the base end side, and the upper sloped part Among the angles formed between the base end portion and the lower inclined portion, it is desirable that the angle on the base end portion side in the left-right direction be an obtuse angle.

According to such an absorbent article, the waist circumference from the cutting guidance starting point along the cutting guidance section is more difficult than intended when the angle formed by the upper sloped part and the lower sloped part on the proximal end side is an acute angle. This makes it easier to reduce the risk of part breakage.

In such an absorbent article, an end of the cutting guide section closest to the distal end of the fastening section is the cutting guide starting point, and the cutting guide section is arranged upward from the end closest to the distal end of the fastening section. and an upper sloped part that slopes toward the proximal end side, and a lower sloped part that slopes downward from the end closest to the distal end and toward the base end side, and the upper sloped part Among the angles formed between the base end portion and the lower inclined portion, it is desirable that the angle on the base end side in the left-right direction be an acute angle.

According to such an absorbent article, since the cutting guide part is a melted part, it reduces the risk of unintentional tearing like a perforation, and at the same time reduces the risk of unintentional tearing at the upper inclined part on the base end side and the lower side. It is possible to more easily cut the waist portion with the cutting guiding portion than when the angle formed between the cutting guide portion and the inclined portion is an obtuse angle.

In such an absorbent article, when the absorbent article is viewed in the front-rear direction from the waist side where the cutting guide section is provided, the cut guide section overlaps with the fastening section. It is desirable to have one.

According to such an absorbent article, since the fastening part can easily cover at least a portion of the cutting guide part, it is possible to reduce the possibility that the waist part will be torn unintentionally.

In such an absorbent article, a base end portion of the fastening portion is fixed to the waist portion by a fixing portion, at least a part of the fixing portion is also the cutting guide portion, and the fastening portion is fixed to the waist portion. Preferably, the maximum length in the left-right direction from the fixing part to the end on the distal end side is longer than the maximum length in the left-right direction from the fixing part to the end on the base end side.

According to such an absorbent article, since the cutting guide part is a fixing part that fixes the fastening part to the waist part, it is possible to reduce the risk of unintentional cutting of the waist part, and to attach the fastening part to the cut guide part. When cutting the waist portion along the line, it becomes easy to grasp the tip of the fastening portion and apply force, and the waist portion can be easily cut.

In such an absorbent article, the fixing part is provided on the one side waistline part, the fixing part is provided on the other side from the joint part in the left-right direction, and the fixing part is provided on the other side from the joint part in the left-right direction, and the fixing part is provided on the other side of the joint part in the left-right direction, and is provided on the other side of the fixing part in the left-right direction, and the maximum length from the fixing part to the proximal end side of the fastening part in the left-right direction is the same as the fixing part. It is desirable that the length be shorter than the maximum length from the part to the joint part.

According to such an absorbent article, the maximum length from the fixing part to the proximal end of the fastening part in the left-right direction is longer than the maximum length from the fixing part to the joining part. Therefore, it is possible to reduce the risk of the fastening part being torn from the proximal end side.

In such an absorbent article, the fastening part is fixed to the waist part by a fastening part, and the fastening part has a fastening means area provided with a fastening means for forming the fastening part. Preferably, at least a part of the fixing part is also the cutting guide part, and the length of the fixing means area in the vertical direction is longer than the length of the melting part in the vertical direction.

According to such an absorbent article, by making the length of the fixing means region longer than the length of the fused portion of the waist portion in the vertical direction, it becomes easier to separate the waist portion with the cutting guide portion as a boundary.

In this absorbent article, in a natural state, the fastening part is folded back from the rear side in the front-back direction to the front side in the front-back direction on the one side in the left-right direction, and the fastening part is folded back toward the front side in the front-back direction. When the absorbent article is viewed from the one-side waistline side in the direction, the base end of the fastening part is located at the rearmost side of the absorbent article, and the distal end of the fastening part is located at the rearmost side of the absorbent article. It is desirable that it be located at the frontmost side of the absorbent article.

According to such an absorbent article, in a natural state, at least a portion of the waist portion located on the front and rear sides of one side in the left-right direction can be covered with the fastening portion, so that the waist portion may be unintentionally This can reduce the risk of breakage.

In such an absorbent article, the fastening part is fixed to the one side waistline part by a fixing part, and the engaging part separably engages with a non-skin side surface of the one side waistline part. , the one-side waistline portion has, in the left-right direction, 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; It is preferable that the elastic region adjoins the joint portion from the other side, and the non-elastic region adjoins the fixed portion from the one side.

According to such an absorbent article, the non-stretchable region facilitates cutting at the cutting guiding section, and the stretchable region makes it easier to fit the waist opening formed using the fastening section to the wearer's body. .

In this absorbent article, in the left-right direction, the fixing part is provided on the other side from the joint part, the engaging part is provided on the other side from the fixing part, and the fixing part is provided on the other side from the fixing part, and The fastening part has a non-fixing part that is not fixed to the one-side waistline part and is provided on the one side from the fixing part and on the other side from the joint part, and the fastening part has a non-fixing part that is not fixed to the one-side waistline part, and It is desirable that the absorbent article has a portion where the non-stretchable region and the non-fixing portion overlap when the absorbent article is viewed from the side waist circumference side.

According to such an absorbent article, the non-stretchable area directly applies force to move the fastening part to the fastening part, and the non-fastening part covers the non-stretchable area, thereby allowing the bonding part and the fixed part to connect. The rigidity of the portion between the connecting portion and the fixing portion can be increased, and the risk of damage to the portion between the joint portion and the fixing portion can be easily reduced.

In such an absorbent article, the fastening part is fixed to the waist part by a fastening part, the fastening part is a welded part in which the waist part and the fastening part are welded together, and the fastening part is a welded part that welds the waist part and the fastening part, and At least a portion of the section is also the cutting guide section, the one side waistline section includes a one side elastic region that expands and contracts in the left-right direction, and the other side waistline section includes the other side elastic region that expands and contracts in the left-right direction. the one-side stretchable region and the other-side stretchable region are continuous via the joint portion, and the fastening portion has a base-end side non-stretchable region that does not stretch in the left-right direction on the base-end side. and a distal end side non-stretchable region that does not stretch in the left-right direction on the distal end side, and the base end side non-stretchable region and the distal end non-stretchable region are continuous via the fixing part. This is desirable.

According to such an absorbent article, the fixed part of the fastening part can be prevented from being damaged due to concentration of force on the joint part due to the expansion and contraction of the elastic region adjacent to the joint part. The non-stretchable region adjacent to allows the force applied to the fastening portion to be applied directly, making it easier to cut the waist portion by the force applied to the fastening portion.

In such an absorbent article, it is desirable that the fusion portion and the bonding portion have different arrangement patterns.

According to such an absorbent article, the melting section and the joining section can be provided in an appropriate arrangement pattern according to their respective uses.

In such an absorbent article, it is desirable that the end of the fastening portion on the tip side has an uneven portion.

According to such an absorbent article, a cutting guidance starting point can be easily provided by the uneven portion at the end of the fastening section on the distal end side, and the waist portion can be easily cut at the cutting guidance starting point.

===First embodiment===
EMBODIMENT OF THE INVENTION Hereinafter, embodiments will be described as an absorbent article according to the present invention, taking a pants-type disposable diaper for infants as an example. However, the absorbent article according to the present invention is not limited to disposable diapers for infants, but can also be used 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 according to the first embodiment, 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 its natural state, viewed from the ventral waist portion 20 side. 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 and the like is the center line in the left-right direction in the extended state. Note that FIG. 3 shows the pant-type diaper 1 shown in FIGS. 1 and 2 in an unfolded and stretched state. Hereinafter, the center line CC in the left-right direction of the diaper 1 in each figure is the center line in the stretched state.

The "natural state" is the state in which 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 girth part 30 is pulled outward on both sides in the left-right direction, and the girth parts 20 and 30 are brought into an "stretched state", and this stretched state is continued for 15 seconds. Release the tension on the diaper 1 and place it on a flat surface such as a desk. The state after 5 minutes of being placed flat on a flat surface is defined as the natural state.

The "unfolded state" means that both sides of the diaper 1 in a pants-type state, that is, the joints 2a and 2b of the both side ends of the ventral waist part 20 and the both side ends of the back waist part 30 are separated, respectively. , which is a state in which the diaper 1 is opened and the entire diaper 1 is laid out flatly. The "stretched state" refers to a state in which the elastic member of the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 are no longer visible. Specifically, the diagram shows a state in which the dimensions of each member constituting the diaper 1 (for example, the ventral waist portion 20 described below) are stretched until the dimensions match or are close to the dimensions of the individual member.

The diaper 1 has an up-down direction, a left-right direction, and a front-back direction in the pants-shaped state shown in FIGS. 1 and 2, and has 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-back direction, the ventral side of the wearer is the front side, and the back side of the wearer is the back side. Further, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction, the side that contacts the wearer in the thickness direction is referred to as the skin side, and the side opposite to the skin side is referred to as the non-skin side. Note that the thickness direction is also a direction along the front-rear direction in a natural state.

The pants-side diaper 1 is a so-called three-piece type, and includes an absorbent main body 10, a ventral waist portion 20, and a back waist portion 30. The ventral waist portion 20 covers the wearer's ventral side, and the dorsal waist portion 30 covers the wearer's back side. The diaper 1 also has a fastening part 5.

In the diaper 1 in the unfolded state shown in FIG. 3, the ventral waist portion 20 and the back waist portion 30 are arranged such that their longitudinal directions extend along the left-right direction of the diaper 1. One longitudinal end of the absorbent main body 10 is disposed at the center of the ventral waistline section 20 in the left-right direction, and the longitudinal end of the absorbent main body 10 is arranged at the center of the dorsal waistline section 30 in the left-right direction. By arranging the end portion on the other side in the direction, the crotch portion 40 is configured. The absorbent main body 10 is arranged closer to the skin than the ventral waist portion 20 and the dorsal waist portion 30.

The diaper 1 in the unfolded state shown in FIG. By joining both side ends of the ventral waist part 20 and both sides of the dorsal waist part 30 in the direction by heat welding, ultrasonic welding, etc., to form a pair of joined parts 2a and 2b, as shown in FIG. The diaper 1 is in a pants-like state as shown in FIGS. 1 and 2. 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 disposed closer to the skin than the absorbent body 11, a second sheet 13 disposed between the top sheet 12 and the absorbent body 11, and an absorbent body 11. A side sheet 14 disposed closer to the skin than the body 11 and the second sheet 13; a liquid-impermeable backsheet 15 disposed closer to the non-skin side than the absorbent body 11; It has an exterior sheet 16 arranged therein.

The absorbent body 11 has a substantially rectangular shape in plan view, and includes an absorbent core A that absorbs and retains excreted liquid such as urine, and a liquid-permeable core wrap sheet (not shown) that covers the absorbent core. The absorbent core A may be one in which liquid absorbent fibers such as pulp containing super absorbent polymer (SAP) are molded into a predetermined shape, for example, approximately hourglass shape in plan view (molded liquid absorbent fibers); An example is a so-called SAP sheet formed by molding a superabsorbent polymer (SAP) into a sheet shape. Alternatively, the absorbent core 11A may be formed by stacking an SAP sheet and a liquid-absorbing fiber molding in the thickness direction. For example, in order from the skin side in the thickness direction, the SAP sheet, the liquid-absorbing 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 absorbent core 11 in the left-right direction. Examples of the core wrap sheet include liquid permeable sheets such as tissue paper and nonwoven fabric. Note that a configuration without a core wrap sheet may also be used.

As shown in FIG. 3, the leg elastic members 17 provided on both sides of the absorbent main body 10 in the left-right direction constitute leg gathers. The leg gathers of the pants-shaped diaper 1 are provided along each leg opening LH, and the diaper 1 fits around the wearer's legs by the expansion and contraction of the leg expansion/contraction members 17. The leg elastic member 17 of the diaper 1 uses a plurality of rubber threads, and for example, the back sheet 15 and the outer sheet 16 are folded inward in the left-right direction to form two layers of outer sheets 16. In between, the absorbent main body 10 is fixed in a stretched state in the longitudinal direction.

Leak-proof wall elastic members 18 are provided on both sides of the absorbent main body 10 in the left-right direction, on the inner side of the leg elastic members 17. A plurality of leak-proof wall expandable members 18 are fixed in an extended state in the longitudinal direction between the side sheets 14 which are folded outward in the left-right direction to form two layers. Forms a leak-proof wall. When the diaper 1 is worn, the elasticity of the leak-proof wall stretchable member 18 causes the leak-proof wall portion to stand up on the wearer's skin side and fit into the wearer's crotch area.

Examples of the leg elastic member 17 and the leakage wall elastic member 18 include rubber threads and elastic sheets.

The ventral waist portion 20 includes 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 an adhesive such as hot melt, welding using heat or ultrasonic waves. The skin-side sheet 21 and the non-skin-side sheet 22 are sheet members having approximately the same size and approximately the same shape, and in this embodiment, have approximately rectangular shapes. The non-skin side sheet 22 is arranged closer to the non-skin side than the skin side sheet 21. The skin side sheet 21 and the non-skin side sheet 22 include SMS nonwoven fabrics (spunbond, meltblown, and spunbond nonwoven fabrics), spunbond nonwoven fabrics, air-through nonwoven fabrics, point bonded nonwoven fabrics, elastic nonwoven fabrics, plastic sheets, perforated plastic sheets, and their like. A non-stretchable sheet such as a laminate sheet can be used.

The plurality of elastic members 23 of the ventral waist portion 20 are arranged in parallel in the vertical direction between the skin-side sheet 21 and the non-skin-side sheet 22, and are fixed in a stretched state in the left-right direction. Therefore, the ventral waist portion 20 expands and contracts in the left-right direction and fits around the wearer's waist. Examples of the elastic member 23 include elastic members such as rubber and spandex. The non-skin side sheet 22 has an engaged portion 25 on the non-skin side surface that allows engagement with an engaging portion 51 (described later). The engaged portion 25 is a so-called target area, and may be, for example, a nonwoven fabric sheet. In addition, when a male member of a hook-and-loop fastener is used for the engaging portion 51, an engaged portion suitable for the engaging portion 51 is selected, such as using a female member of a hook-and-loop fastener for the engaged portion 25. It is desirable to do so. Furthermore, as the engaged portion 25, the non-skin side sheet 22 made of a member (for example, nonwoven fabric) that can engage with the engaging portion 51 is used instead of providing a separate member on the non-skin side of the non-skin side sheet 22. , it may be directly engaged with the non-skin side surface of the non-skin side sheet 22.

The back waist portion 30 includes 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 a joining means such as an adhesive such as hot melt, welding using heat or ultrasonic waves, or the like. The skin-side sheet 31 and the non-skin-side sheet 32 are sheet members having approximately the same size and approximately the same shape, and in this embodiment, have approximately rectangular shapes. The non-skin side sheet 32 is arranged closer to the non-skin side than the skin side sheet 31. Examples of the skin side sheet 31 and the non-skin side sheet 32 include polypropylene SMS nonwoven fabric (spunbond, meltblown, and spunbond nonwoven fabric), spunbond nonwoven fabric, air-through nonwoven fabric, point bond nonwoven fabric, elastic nonwoven fabric, plastic sheet, and perforated plastic. Non-stretchable sheets such as sheets and laminate sheets thereof can be used.

The plurality of elastic members 33 of the back waist portion 30 are arranged in a line in the vertical direction 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 dorsal waist portion 30 expand and contract in the left and right directions to fit the wearer's waist. Examples of the elastic members 23 and 33 include elastic members such as rubber and spandex.

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

The fastening part 5 is a knob that is grasped and operated by the wearer or a person who wants the wearer to wear the diaper 1 (hereinafter also referred to as "the wearer, etc."). It is preferable that the material has enough strength to prevent itself from breaking. As the fastening portion 5, for example, various films such as a plastic film and a nylon film, a nonwoven fabric, a film obtained by laminating a nonwoven fabric, etc. can be used. The fastening part 5 of the diaper 1 of this embodiment uses a sheet-like member consisting of three layers of nonwoven fabric of the same size 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 be separably engaged with the non-skin side surface (specifically, the engaged portion 25) of the ventral waist portion 20. It is a member. Examples of the engaging portion 51 include a male member of a hook-and-loop fastener and an adhesive material such as an adhesive sheet. 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 part 5 is fixed to the ventral waist part 20 by a fixing part F1 and an auxiliary fixing part 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 part 5 is fixed to the abdominal girth part 20 mainly by the fixing part F1, and the auxiliary fixing part F2 assists the fixing by the fixing part F1.

===How to wear diaper 1===
Diaper 1 can be worn in multiple ways.
For example, in 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 parts 20 and 30 are pulled up to cover the wearer's waist. This allows it to be put into a worn state.

In addition, after the diaper is worn as a pants-type disposable diaper as described above, the abdominal girth portion 20 is cut with a cutting guiding portion (described later), and the engaging portion 51 of the fastening portion 5 is engaged with the ventral girth portion 20. In addition, by forming an opening around the waist, it can be put into a worn state. This makes it possible to adjust the engagement position of the engagement portion 51, making it easier to fit the wearer's waist.

Furthermore, the abdominal girth part 20 is cut in advance with the cutting guide part, and one side in the left-right direction is in the form of a so-called tape-type diaper (the leg opening LH is not formed), and the other side in the left-right direction is in the form of pants. It can also be worn as a type of diaper (with leg openings LH formed).

First, the ventral waist portion 20 is cut with the cutting guiding 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 on the other side of the wearer (in the case of the diaper 1, the wearer's right legs), then pull up the diaper 1 to the wearer's crotch area, 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, the garment is put into a worn state.

By wearing the diaper in this way, for example, infants who flap their legs and find it difficult to pass both legs through the leg openings LH on both sides of a pants-type disposable diaper can use one of the wearer's legs. If it can be passed through the leg opening LH, then it can be easily put into the wearing state by engaging with the fastening part 5 (engaging part 51). In addition, when the wearer wears Diaper 1, it may be difficult to wear a general tape-type diaper (a diaper with tape on both sides in the left and right direction) in the toilet, etc. One side is in a pants-type form and the other side is in a form (tape-type) with a fastening part 5, so that it is easy to wear and the fit around the waist can be easily adjusted.

In addition, when removing the diaper 1 from the body after use, the abdominal girth part 20 is separated by the cutting guide part, 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. By pulling out the other leg from the leg opening LH, the diaper 1 can be removed from the wearer's body.

===About cutting the ventral waist portion 20===
Cutting of the ventral waist portion 20 will be explained using FIGS. 5 and 6. FIG. 5 is a diagram illustrating the separation of the ventral waist portion 20 and the formation of the waist opening. FIG. 6 is a diagram illustrating the operation of cutting the ventral waist portion 20. FIG. 5 is a diagram illustrating the configuration of a cross section taken along the line AA in FIG. 4. FIG. Note that FIGS. 5 and 6 are schematic diagrams, and dimensions and the like are not necessarily accurate.

FIG. 5A shows the diaper 1 in a pants-like state as shown in FIG. 1 and the like. That is, the ventral waist portion 20 is not cut, and the ventral waist portion 20 and the dorsal waist portion 30 form a continuous waist opening via the joints 2a and 2b. FIGS. 5B and 6A show a state in which the distal end of the fastening part 5 is grasped and pulled up toward the non-skin side from the state shown in FIG. 5A.

Then, as shown in FIG. 6A, by grasping the waist portion 20 with one hand, grasping the fastening portion 5 with the other hand, and pulling outward in the left and right directions, 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. The “cutting guide portion” is a guide portion used when cutting at least a portion of the ventral waist portion 20. In the diaper 1, the fixing 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 abdominal girth part 20 and the fastening part 5 are pulled in the left-right direction while holding them, the distalmost part of the cutting guiding part (fixing part F1) will first be pulled. The tensile force is concentrated on the cutting guidance starting point K, which is the end on the distal end side located on the side, and then the cutting guiding part is tilted upward from the cutting guidance starting point K toward the proximal end and the cutting guidance. Force is transmitted along the sloped portion that slopes downward and toward the proximal end from the starting point K. Then, the ventral waist portion 20 is cut at the other end CE in the left-right direction of the fixing portion F1, and the ventral waist portion 20 is separated from the one side portion not provided with the fastening portion 5 and the fastening portion. and the other side with 5.

Thereafter, as needed, as shown in FIG. 5D, by engaging the engaging portion 51 of the fastening portion 5 with the engaged portion 25 of the ventral waist portion 20, a waist opening of the diaper 1 is formed. Ru. When the engaging portion 51 is engaged with the engaged portion 25, one portion and the other portion of the separated abdominal girth 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 at the same time, and the portion on one side and the portion on the other side in the left-right direction of the separated abdominal girth portion overlap in the front-back direction (thickness direction). The engaging portion 51 may be engaged with the engaged portion 25 so as to prevent this from occurring. By adjusting the position where the engaging portion 51 is engaged, the size of the opening around the waist of the diaper 1 can be adjusted.

===About the cutting guide section===
In the diaper 1, one end in the left-right direction of the ventral waist section 20 and the dorsal waist section 30 are joined at a joining section 2a, and the base end of the fastening section 5 is fixed to the ventral waist section 20. It is fixed at part F1. The distal end of the fastening part 5 has an engaging part 51 that separably engages with the non-skin side of the ventral waist part 20, and the fastening part F1 that fixes the fastening part 5 and the ventral waist part 20. At least a portion is a cutting guide section. Specifically, in the diaper 1, when the abdominal girth part 20 and the fastening part 5 are pulled outward in the left-right direction, the ends CE on the other side in the left-right direction of the fastening part F1 (cutting guide part) are the boundary. The ventral waist portion 20 is cut.

FIG. 7 is an enlarged view of the ventral waist portion 20 in FIG. 3. FIG. 8 is an enlarged view of the fixing part F1 and the auxiliary fixing part F2. In FIG. 8, the other end CE of the fixing portion F1, which is the boundary, is indicated by a thick line.

Conventionally, it has been known to provide perforations or the like in order to cut the waist portions 20, 30 of disposable diapers. On the other hand, in the diaper 1, the fixing part F1 for fixing the fastening part 5 to the abdominal girth part 20 also functions as a cutting guide part, so there is no need to separately provide a cutting guide part such as a perforation. This allows for a simplified manufacturing process in which the abdominal girth portion 20 can be cut, and a manufacturing process for forming a cutting guiding part such as a process for forming perforations is not required in the manufacturing process of the diaper 1. It is possible to provide a diaper 1 manufactured by:

A well-known fixing method can be used to fix the abdominal girth part 20 and the fastening part 5 in the fixing part F1. For example, it can be fixed using heat or ultrasonic welding, adhesive, or the like. In addition, the fixed part F1 of the diaper 1 of this embodiment is a welded part. In this way, it is preferable that the cutting guiding part of the diaper 1 is a welded part in which the abdominal waistline part 20 and the fastening part 5 are fixed by welding.

FIG. 9A is a diagram illustrating the cutting guide portion of the diaper 1. FIG. FIG. 9B is a diagram illustrating a cutting guidance section using perforations. FIG. 9A is an enlarged view of portion Y in FIG. 5A, and FIG. 9B is an enlarged view of a portion where perforations are provided in the ventral waist region of a general disposable diaper. The cutting guide portion of the diaper 1 is fixed by welding. As described above, perforations and the like are known as conventional cutting guide portions. As shown in FIG. 9B, regarding the cutting guidance part by the perforation M, the skin-side girth part 20 of the part where the perforation M is provided is easily damaged because there are holes and fewer fibers. It is a part. Therefore, during the manufacturing process or transportation of the diaper 1, or when the wearer or the like handles the diaper 1, there is a risk that the ventral waist portion 20 may be inadvertently torn at the cutting guide portion, contrary to the wearer's intention. On the other hand, as shown in FIG. 9A, the welded part is a part where the fibers are melted and solidified, and the total amount of fibers is not reduced. Therefore, the fixing part F1 formed by the welded part functions as a cutting guide part, so that when the operation is performed with the intention of cutting, cutting is possible, but when the intention is not to cut, it is possible to cut the part F1 against the intention. Therefore, it is possible to reduce the risk of the ventral waist portion 20 being inadvertently torn at the cutting guide portion.

As shown in FIG. 5 etc., when looking at the diaper 1 from the side of the ventral waist portion 20, in the portion that overlaps with the fixing portion F1, in the front-rear direction (thickness direction), the fastening portion 5 is the closest to the fixing portion 5 of the ventral waist portion 20. It is preferable that the melting point of the member located on the side is lower than the melting point of the member located closest to the ventral waist portion 20 in the fastening portion 5. In the diaper 1, the member of the abdominal girth part 20 located closest to the fastening part 5 is the non-skin side sheet 22, and the member of the fastening part 5 located closest to the ventral waist part 20 side is the non-skin side sheet 22. is the nonwoven fabric sheet located closest to the skin of the three layers. In the fixing portion F1 fixed by welding, a material with a lower melting point melts more easily, so the melted material is easier to cut. Therefore, the melting point of the member (non-skin side sheet 22) located closest to the fastening part 5 of the abdominal girth part 20 is lower than the melting point of the member located closest to the ventral waist part 20 of the fastening part 5. By making it easier to melt, melting of the member (non-skin side sheet 22) on the side of the ventral waist portion 20 in the cutting guide portion (fixed portion F1) is promoted, and the ventral waist portion 20 is cut. It can be made easier.

Furthermore, in addition to the member (non-skin side sheet 22) located closest to the fastening section 5 side of the ventral waist section 20, other members constituting the ventral waist section 20 (in this embodiment, the skin side sheet 21) ) is more preferably lower than the melting point of the adhesive portion 5 located closest to the ventral waist portion 20 side. Since it is easier to promote melting of the entire ventral waist portion 20 than the members of the fastening portion 5, it becomes easier to cut the ventral waist portion 20.

The members such as the skin-side sheet 21 and non-skin-side sheet 22 of the ventral waist portion 20 to be welded (melted) at the fixing part F1 and the members of the fastening part 5 include polyester, polyethylene, polypropylene, and polyethylene terephthalate. A nonwoven fabric sheet or a film sheet made of, for example, can be used.

As a method of cutting the ventral waist portion 20 using the fixing portion F1 as a cutting guide, for example, as described above, by pulling the fastening portion 5 and the ventral waist portion 20 outward in the left-right direction, There are a method of separating the waist portion 20, a method of tearing the fastening portion 5 and the ventral waist portion 20 by twisting them in opposite directions, and the like.

When cutting the abdominal girth part 20 with the cutting guiding part, when the diaper 1 is viewed from the side of the abdominal girth part 20 in the front-rear direction, in the adjacent region adjacent to the fixing part F1 from the distal end side of the fastening part 5, When comparing the part of the fastening part 5 with the smallest weight per unit area and the part of the abdominal girth part 20 with the largest weight per unit area, the weight per unit area of the fastening part 5 is It is preferable that the portion where is smallest is larger. FIGS. 10A and 10B are diagrams illustrating cutting in the cutting guiding section. FIG. 10A is an enlarged view of portion Y in FIG. 5A. FIGS. 10A and 10B are schematic diagrams for explaining the cutting guide section, and the dimensions and the like are not necessarily consistent with other diagrams or actual products. In FIGS. 10A and 10B, the thickness of the attachment part 5, which has a large weight per unit area, is shown thick, and the thickness of the ventral waist part 20, which has a small weight per unit area, is shown thin.

In the diaper 1, as shown in FIG. 10A, the fastening part 5 having a large weight per unit area and the abdominal girth part 20 having a small weight per unit area are fixed by the fixing part F1, to the state shown in FIG. 10B. As shown, when the fastening part 5 and the abdominal girth part 20 are pulled outward in the left-right direction, the tearing force concentrates on the fastening part F1, and the tearing force is concentrated on the fastening part F1 at the other end CE in the left-right direction. The ventral waist portion 20 is cut so as to be torn. At this time, when viewed from the side of the ventral waist portion 20, the weight per unit area of the fastening portion 5 is determined by the weight per unit area of the fastening portion 5 in the adjacent region adjacent to the fixing portion F1 from the tip side of the fastening portion 5. By making the weight larger than the weight per unit surface area, the ventral waist portion 20 is torn more easily than when the weight per unit area of the fastening portion 5 is smaller than the weight per unit surface area of the ventral waist portion 20. The fastening part 5, which is easily cut and has a large weight per unit area, can easily maintain a state fixed to the fixing part F1. In this way, by making it easier to cut the abdominal girth part 20 instead of the fastening part 5, the diaper can form a waist opening by engaging the fastening part 5 with the cut and separated ventral waist part 20. It can be set to 1.

The weight per unit area of the abdominal girth part 20 and the fastening part 5 can be determined by, for example, cutting out samples from each member with unit areas (for example, 10 mm x 10 mm square) as adjacent areas, and measuring the weight of each sample. You can make a comparison by doing this. In addition, in the diaper 1 of this embodiment, members such as the skin-side sheet 21 are folded back at the upper end of the ventral waist portion 20, so that the portion where the folded members are overlapped the most is the ventral waist region. This is the part with the largest weight per unit area of 20, and this part is cut out as a sample. Similarly, in the case where parts of the fastening part 5 have different weights per unit area, a part having the largest weight per unit area is cut out as a sample, and the weights of both samples are compared. The adjacent area refers to a predetermined area from the other end CE of the fixing part F1 in the left-right direction to the distal end side of the fastening part 5, and in this embodiment, it is a square of 10 mm x 10 mm. This length can be set arbitrarily as long as the area adjacent to the distal end side of the fastening part 5 from the other end CE in the left-right direction of F1 and the laminated structure of the abdominal girth part 20 and the fastening part 5 are the same. Can be set. Further, if the region adjacent to the distal end side of the fastening part 5 from the other end CE in the left-right direction of the fixing part F1 and the stacked structure of the ventral waist part 20 and the fastening part 5 are the same, To compare the weight per unit area, any part may be cut out as a sample.

Furthermore, when the diaper 1 is viewed from the side of the abdominal girth section 20 in the front-rear direction, the weight per unit area of the fastening part 5 is When comparing the smallest portion and the portion of the ventral waist portion 20 having the largest weight per unit area, it is preferable that the portion of the fastening portion 5 having the smallest weight per unit area is larger.

The ventral waist portion 20 of the diaper 1 of this embodiment is formed by overlapping sheet members (waist sheet members) of the skin side sheet 21 and the non-skin side sheet 22, and the fastening portion 5 includes a nonwoven fabric sheet, Three sheet members (fastening portion sheet members), a film sheet and a nonwoven fabric sheet, are stacked and formed. In the diaper 1, as shown in FIG. 10A, the weight per unit area of the fastening part sheet member (three-layer sheet member) of the fastening part 5 is large, and the weight per unit area of the fastening part sheet member (skin side sheet) of the ventral waist part 20 is large. 21 and the non-skin side sheet 22) have a small weight per unit area. From the state where the fastening part 5 and the ventral waistline part 20 are fixed by the fixing part F1, as shown in FIG. 10B, when the fastening part 5 and the ventral waistline part 20 are pulled outward in the left-right direction, The tearing force concentrates on the fixed portion F1, and the ventral waist portion 20 is torn and cut at the other end CE in the left-right direction of the fixed portion F1. At this time, when viewed from the abdominal girth section 20 side, the fastening section sheet member (three-layer sheet member) of the fastening section 5 is located in the adjacent region adjacent to the fixing section F1 from the distal end side of the fastening section 5. By making the weight per unit area of the abdominal girth section 20 larger than the weight per unit surface area of the waist sheet members (skin side sheet 21 and non-skin side sheet 22), the fastening section of the fastening section 5 Compared to the case where the weight per unit area of the sheet member (three-layer sheet member) is smaller than the weight per unit area of the waist sheet member (skin side sheet 21 and non-skin side sheet 22) of the ventral waist section 20, The ventral waist portion 20 is easily torn and cut, and the fastening portion 5 is easily maintained in a state fixed to the fixing portion F1. In this way, by making it easier to cut the abdominal girth part 20 instead of the fastening part 5, the diaper can form a waist opening by engaging the fastening part 5 with the cut and separated ventral waist part 20. It can be set to 1.

The weight per unit area of the ventral girth part 20 and the fastening part 5 can be determined by, for example, cutting samples from each member with unit areas (for example, 10 mm x 10 mm squares) as adjacent areas, soaking them in toluene, etc., and laminating them. The target waist sheet members (skin side sheet 21, non-skin side sheet 22) and fastening section sheet members (three-layer sheet) are collected. Note that if any adhesive or the like remains on each sheet member, remove it all with toluene or the like. After that, each sheet member is dried at room temperature for 24 hours, and then the weight of each sheet member is measured, and the sum of the separated sheet members of each sample is calculated and compared. That is, the weights of the abdominal girth portion 20 and the fastening portion 5 after removing the adhesive (hot melt adhesive) that joins each sheet member are measured and compared. In addition, in the diaper 1 of this embodiment, members such as the skin-side sheet 21 are folded back at the upper end of the ventral waist portion 20, so that the portion where the folded members are overlapped the most is the ventral waist region. The weight per unit area of the waist sheet member No. 20 is the largest, and this portion is cut out as a sample. Similarly, if the weight per unit area of the fastening part 5 is different in some parts, cut out the part of the fastening part sheet member with the largest weight per unit area as a sample, and remove the adhesive from both samples. Compare the removed weight. The adjacent area refers to a predetermined area from the other end CE of the fixing part F1 in the left-right direction to the distal end side of the fastening part 5, and in this embodiment, it is a square of 10 mm x 10 mm. This length can be set arbitrarily as long as the area adjacent to the distal end side of the fastening part 5 from the other end CE in the left-right direction of F1 and the laminated structure of the abdominal girth part 20 and the fastening part 5 are the same. Can be set. Further, if the region adjacent to the distal end side of the fastening part 5 from the other end CE in the left-right direction of the fixing part F1 and the stacked structure of the ventral waist part 20 and the fastening part 5 are the same, To compare the weight per unit area, any part may be cut out as a sample.

Moreover, it is preferable that all of the fixing|fixed part F1 is a cutting guide part. It becomes easier to cut the ventral waist portion 20 along the fixed portion F1 than when a part of the fixed portion F1 is a cutting guide portion.

In the diaper 1 of this embodiment, a cutting guide portion (fixing portion F1) is provided in the abdominal girth portion 20. It is preferable that the cutting guide portion provided in the abdominal waist portion 20 is continuous from the upper end to the lower end of the abdominal waist portion 20 in the vertical direction. That is, it is preferable that the fixing part F1, which is the cutting guide part, is continuous from the upper end to the lower end of the abdominal girth part 20. Since the cutting guide part is continuous from the upper end to the lower end of the ventral waistline part 20, the ventral waistline part 20 can be cut along the cutting guide part and completely separated than when the cutting guide part is discontinuous. It becomes easier.

As shown in FIG. 8, the end K of the cutting guide part (fixed part F1) closest to the distal end is the cutting guide starting point K. The cutting guidance starting point K is the part where the force is most likely to be concentrated when force is applied to the abdominal girth part 20 and the fastening part 5 in order to cut the abdominal girth part 20 with the cutting guide part, and is the part where the force is most likely to be concentrated. This is also the area where cutting is likely to begin. As shown in FIG. 8, it is preferable that the cutting guide part has inclined parts fa1 and fb1 that extend from the end K closest to the distal end toward the proximal end and are inclined in the vertical direction. This makes it easier for the wearer to concentrate the force when pulling the ventral waist portion 20 and the fastening portion 5 on the cutting guidance starting point K, and then transmitting the force from the cutting guidance starting point K to the inclined portion. Since the information can be easily transmitted to fa1 and fb1, it becomes easier to cut the ventral waist portion 20 into a shape along the cutting guide section.

Note that the "slope" of the sloped parts fa1 and fb1 refers to having a slope with respect to the vertical and horizontal directions, and is not limited to the linear sloped parts fa1 and fb1 like the diaper 1, but also includes curved parts. It may be a part provided.

Moreover, as shown in FIG. 8, it is preferable that the cutting guide part has an upper slope part fa1 and a lower slope part fb1. The upper slope part fa1 is a slope part that slopes upward and toward the proximal side from the end K (cutting guidance starting point) closest to the distal side, and the lower slope part fb1 is sloped from the end K (cutting guidance starting point) closest to the distal side. This is an inclined portion that slopes downward and toward the proximal end from the cutting guidance starting point. As a result, in order to cut the abdominal girth part 20 with the cutting guide part, the force applied to the abdominal girth part 20 and the fastening part 5 is first made easier to concentrate on the cutting guide starting point K. By making it easier to transmit the concentrated force to the upper slope part fa1 and the lower slope part fb1, the abdominal girth part 20 can be easily cut.

Furthermore, among the angles formed by the upper inclined part fa1 and the lower inclined part fb1, it is preferable that the angle θ on the proximal end side in the left-right direction is an obtuse angle (an angle larger than 90 degrees and smaller than 180 degrees). preferable. This makes it easier to transmit the force applied from the cutting guidance starting point K to the upper slope part fa1 and the lower slope part fb1, making it easier to cut the abdominal girth part 20, and making the cutting easier than when θ is an acute angle. The length of the guide portion (fixed portion F1) in the left-right direction can be shortened.

As shown in FIG. 7, it is preferable that the cutting guidance starting point K is provided on one side of the absorbent core 11A in the left-right direction. The absorbent core 11A is a thick portion of the diaper 1 and has high rigidity, so that it is difficult to cut the abdominal girth portion 20. Therefore, by providing the cutting guidance starting point K on one side of the absorbent core 11A in the left-right direction, it is possible to improve the ease of cutting the ventral waist portion 20.

Regarding the fastening part 5 fixed to the abdominal girth part 20 by the fixing part F1, it is preferable that a cutting guide part is provided between the joint part 2a and the absorbent core 11A in the left-right direction. That is, it is preferable that the fixing part F1 is provided between the joint part 2a and the absorbent core 11A in the left-right direction. Since the absorbent core 11A is thick and has high rigidity, and the abdominal girth portion 20 is difficult to cut, a cutting guide portion is provided between the joint portion 2a and the absorbent core 11A in the left-right direction. This makes it possible to improve the ease of cutting the ventral waist portion 20.

Further, as shown in FIG. 4 and the like, it is preferable that the cutting guidance starting point K overlaps the engaging portion 51 in the vertical direction. As shown in FIGS. 6A and 6B, when cutting the abdominal girth section 20 along the cutting guide section, the engaging section 51 of the fastening section 5 is often grasped. Therefore, in the vertical direction, the cutting guidance starting point K overlaps with the engaging part 51, so that when cutting, the force applied to the fastening part 5 can be easily transmitted to the cutting guidance starting point K, so that the cutting guidance starting point K overlaps with the engaging part 51. The side waistline portion 20 can be easily cut.

As shown in FIG. 4, it is preferable that the length H from the cutting guidance starting point K to the end (the other end) of the fastening part 5 on the distal end side is 50 mm or more in the left-right direction. As shown in FIGS. 6A and 6B, when cutting the ventral waist portion 20 by grasping the ventral waist portion 20 and the fastening portion 5 and pulling them toward the outside in the left-right direction, If the length from the cutting guidance starting point K to the end of the distal end of the fastening part 5 is less than 50 mm, it may become difficult to grasp the fastening part 5 by hand or apply force when pulling it. Put it away. Therefore, by setting the length H between the cutting guidance starting point K and the end of the fastening part 5 on the distal end side in the left-right direction to be 50 mm or more, it becomes easier for the wearer etc. to cut the ventral waist part 20.

It is preferable to have an auxiliary fixing part F2 that assists in fixing the fastening part 5 and the abdominal girth part 20. It is more preferable that the auxiliary fixing part F2 is disposed intermittently in the vertical direction closer to the proximal end of the fastening part 5 (on one side in the left-right direction) than the cutting guiding part (fixing part F1). As shown in FIG. 8 and the like, on the proximal end side of the cutting guide part, there is provided a plurality of auxiliary fixing parts F2 having a plurality of substantially elliptical shapes arranged intermittently along the cutting guide part. The auxiliary fixing part F2 is a part obtained by welding the fastening part and the ventral waist part 20, similarly to the fixing part F1. By providing the auxiliary fixing part F2, while strengthening the fixation between the fastening part 5 and the abdominal girth part 20 by the fixing part F1, the auxiliary fixing parts F2 arranged intermittently can fix the abdomen starting from the auxiliary fixing part F2. It is possible to reduce the risk that the side waist portion 20 will be cut. In particular, by arranging the auxiliary fixing parts F2 intermittently, when a force is applied to the fastening part 5 from the proximal end toward the distal end, the proximal end of the auxiliary fixing part F2 It is possible to reduce the risk of the ventral waist portion 20 being cut off along the edge.

Furthermore, the diaper 1 includes a plurality of protruding fixing parts that protrude from the fixing part F1 toward the proximal end between the fixing part F1 and the auxiliary fixing part F2. The plurality of protruding fixing parts are arranged intermittently in the vertical direction. Similar to the auxiliary fixing part F2, this protruding fixing part also strengthens the fixation between the fastening part 5 and the abdominal girth part 20 by the fixing part F1, and also uses the protruding fixing part as a starting point by the protruding fixing parts disposed intermittently. As a result, the risk of the ventral waist portion 20 being cut can be reduced.

In addition, in the ventral waist portion 20 provided with the fixing portion F1, a portion at a predetermined distance from the cutting guide portion toward the distal end of the fastening portion 5 is a non-stretchable region in which the ventral waist portion 20 does not expand or contract in the left-right direction. It is preferable that When a wearer or the like grabs and pulls the fastening part 5 in order to cut the ventral waist part 20, the ventral waist part 20 itself stretches and the fear that the applied force is buffered is reduced. By making it easier to apply the force when pulling the fastening part 5 to the cutting guide part (fixing part F1), it becomes easier to cut the abdominal girth part 20 by pulling the fastening part 5.

As shown in FIGS. 4 and 7, the ventral waist portion 20 of the diaper 1 includes a stretchable member 23 that stretches in the left-right direction, and has 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. Equipped with 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 center portion and the region from the center portion to one side end of the fastening portion 5 are the non-stretchable regions N. The stretchable region S has a one-side stretchable region Sa provided on one side and a second-side stretchable region Sb provided on the other side in the left-right direction. The area from the side end to the side end is the one-side elastic area Sa, and the area from the joint 2b to the center on the other side is the other-side elastic area Sb. That is, when viewed from the ventral waist portion 20, the portion of the ventral waist portion 20 that overlaps the fastening portion 5 is a non-stretchable region N. Therefore, the non-stretchable region N provided from the cutting guiding part (fixed part F1) toward the distal end side of the fastening part 5 makes it easier to apply the force applied to the fastening part 5 to the cutting guiding part.

Note that the predetermined distance of the "part of the predetermined distance from the cutting guide part toward the distal end side of the fastening part 5" can be set to any length. However, in the left-right direction, the longer the length of the non-stretchable region N adjacent to the cutting guide part (fixed part F1) from the tip side (the other side), the more the force applied to the fastening part 5 is buffered by expansion and contraction. The "predetermined distance" of the non-stretchable area N of the diaper 1 of this embodiment is longer than the distance from the cutting guide part to the tip of the fastening part 5, since this reduces the problem and makes it easier to add to the cutting guide part. It is said that

The non-stretchable region N of the ventral waist portion 20 can be realized, for example, by not arranging the stretchable member 23. Furthermore, even if a stretchable member such as a stretchable member 23 or a stretchable sheet is arranged over the entire region of the abdominal girth region 20, by providing a plurality of welded parts at positions corresponding to the non-stretchable region N, A desired position of the side waist portion 20 may be non-extendable.

Further, it is more preferable that not only the ventral waist portion 20 includes the non-stretchable region N, but also that the fastening portion 5 itself does not stretch or contract. As a result, the force that pulls the fastening part 5 and the abdominal girth part 20 outward from each other is reduced from being buffered by the expansion and contraction of the fastening part 5, making it easier to apply force to the cutting guiding part, It becomes easier to cut the waist portion 20.

Furthermore, regarding the ventral waist portion 20, the region between the cutting guide portion and the side end of one side (the proximal end side of the fastening portion 5) of the absorbent core 11A in the left-right direction does not expand or contract in the left-right direction. Stretchable region N) is more preferable. This reduces the buffering of the force applied to the fastening part 5 due to expansion and contraction, and makes it easier to apply it to the cutting guide part, making it easier to cut the abdominal girth part 20 by operating the fastening part 5. Prone.

Regarding the ventral waist portion 20 provided with the fixing portion F1, it is preferable that adhesive be applied to a portion of the predetermined distance from the cutting guide portion toward the distal end of the fastening portion 5. Generally, a portion of the ventral waist portion 20 to which an adhesive is applied has higher rigidity than a portion to which no adhesive is applied. Therefore, by applying adhesive to a portion of the abdominal girth portion 20 that is a predetermined distance from the cutting guide portion toward the distal end of the fastening portion 5, the rigidity of the portion of the predetermined distance is increased, and By making it easier for the wearer to apply force to the cutting guiding part (fixed part F1) when the wearer or the like grasps and pulls the fastening part 5 in order to cut the waist part 20, the abdominal side caused by pulling the fastening part 5 is made easier. It becomes easier to cut the waist portion 20.

The adhesive applied to the abdominal girth portion 20 may be an adhesive such as a hot melt adhesive for fixing each member such as the skin side sheet 21 and the non-skin side sheet 22, or may be applied for the purpose of adhering the members together. It doesn't have to be an adhesive. Further, the "predetermined distance" for applying the adhesive can be set to any length. However, the longer (wider) the area where the adhesive part adjacent to the cutting guide part (fixed part F1) is applied from the tip side (the other side) in the left-right direction is, the more the force applied to the fastening part 5 is applied to the cutting guide part. The "predetermined distance" for applying the adhesive part of the diaper 1 of this embodiment is set to be longer than the distance from the cutting guide part to the tip of the fastening part 5, since it is easier to apply the adhesive part.

===Other embodiments===
Although the first embodiment has been described above, the above-described embodiment is for facilitating understanding of the present invention, and is not for construing the present invention in a limited manner. Further, the present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

In the above-described embodiment, the fastening part 5 and the ventral waist part 20 are fixed by the fixing part F1, and the engaging part 51 is engaged with the non-skin side of the ventral waist part 20, but the present invention is not limited to this. do not have. The fastening part 5 and the ventral waist part 20 may be fixed by the fixing part F1, and the engaging part 51 may be engaged with the non-skin side surface of the dorsal waist part 30. Further, the fastening part 5 and the dorsal waist part 30 are fixed by the fixing part F1, and the engaging part 51 is engaged with the non-skin side surface of the ventral waist part 20 or the non-skin side surface of the dorsal waist part 30. It may be something.

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 left side of the wearer, but the fastening portion 5 is not limited thereto. The fastening portion 5 may be provided on the other side of the diaper 1 in the left-right direction, that is, on the right side of the wearer. For example, if the person who is going to wear the diaper is right-handed, the fastening part 5 can be provided on one side of the diaper 1 in the left-right direction (the left side of the wearer), so that the fastening part 5 can be provided by the person who is going to wear the diaper. The operability of 5 can be improved.

Further, in the above-described embodiment, one side in the left-right direction of the diaper 1 is provided with the fastening part 5 fixed by the fixing part F1, which is also a cutting guide part, and the other side in the left-right direction is provided with the joint part 2b at the waist circumference part. Although the configuration is such that the fixing portion 5 is not provided while 20 and 30 are joined, the present invention is not limited to this. On one side in the left-right direction of the diaper 1, a fastening part 5 fixed by a fixing part F1 which is also a cutting guide part is provided, and on the other side in the left-right direction, the waist parts 20 and 30 are joined at a joint part 2b. In addition, a fastening part fixed by a fixing part which is also a cutting guide part is provided, or a so-called fastening tape is provided on either one of the waist parts 20 and 30 without providing a joining part 2b on the other side in the left and right direction. You may.

In the above-described embodiment, the fixing part F1 is continuous from the upper end to the lower end of the abdominal girth part 20, and the entire fixing part F1 is a cutting guide part, but the present invention is not limited to this. The fixing part F1 may be discontinuous, the fixing part F1 may not be provided to the upper end or the lower end of the abdominal girth part 20, and a part of the fixing part F1 may be a cutting guide part. . For example, the fixing portion F1 may be discontinuous, or the linear fixing portion F1 may be branched in the middle, and a portion of the fixing portion F1 may be a cutting guide portion.

In the above-described embodiment, the angle θ formed by the upper inclined part fa1 and the lower inclined part fb1 on the proximal end side of the fastening part 5 is an obtuse angle for the cutting guide part (fixed part F1), but the angle θ is not limited to this. I can't do it. Regarding the cutting guiding part (fixing part F1), the angle θ formed by the upper inclined part fa1 and the lower inclined part fb1 on the base end side of the fastening part 5 may be an acute angle. By setting the angle θ to be an acute angle, when the wearer applies a force to the cutting guide part to cause the cutting to be cut, the force is first concentrated at the cutting guide starting point K, and the concentrated force is transferred to the obtuse angle θ. It becomes easier to transmit the information to the upper slope part fa1 and the lower slope part fb1, which have steep slopes in the vertical direction, than in the case of , and it becomes easier to perform cutting at the cutting guide part.

In the above-described embodiment, the cutting guide part includes an upper inclined part fa1 that slopes upward and toward the proximal end from the cutting guiding starting point K, and a lower inclined part fa1 that slopes downward and toward the proximal end from the cutting guiding starting point K. Although the shape has the side slope part fb1, the shape is not limited to this. FIG. 11 is a diagram illustrating a modification of the cutting guide section. In FIG. 11, the auxiliary fixing part F2, the engaging part 51, etc. are omitted. As shown in FIG. 11A, the cutting guide part (fixed part F1) may have a shape in which the cutting guide starting point K is located at the upper end (or lower end) of the ventral waistline part 20 and has an inclined part. Further, as shown in FIG. 11B, the cutting guide part (fixed part F1) includes a slope part that slopes from the upper end (cutting guide starting point K) of the abdominal girth part 20 toward the lower side and the proximal end side; The shape may include an inclined portion that slopes upward and toward the proximal end from the lower end (cutting guidance starting point K) of the side waistline portion 20. The form shown in FIG. 11B is further modified, and as shown in FIG. 11C, a cutting guidance starting point K is provided at the center of the fastening part 5 in the vertical direction, and from the cutting guidance starting point K toward the upper side and the proximal end. The cutting guide portion (fixed portion F1) may have a curved portion that curves and a curved portion that curves downward from the cutting guidance starting point K toward the proximal end side. Furthermore, the cutting guide portion may have a shape (not shown) along the vertical direction.

Further, as described above, the diaper 1 can be attached to the abdominal girth by grasping the ventral girth 20 with one hand, grasping the fastening portion 5 with the other hand, and pulling outward in the left and right directions. 20 can be cut along the cutting guide. In FIGS. 6A and 6B, by pulling horizontally (parallel to the width direction of the diaper 1) one hand that grips the abdominal girth part 20 and the other hand that grips the fastening part 5, the fastening part The force was concentrated on the cutting guidance starting point K located closest to the distal end of the cutting guidance point K, and the abdominal girth part 20 was cut along the cutting guidance part (fixed part F1) from the cutting guidance starting point K. However, the cutting is not necessarily limited to this cutting. I can't do it. For example, pulling the fastening part 5 in any direction, such as pulling the fastening part 5 with the tip pointing diagonally downward or pulling the fastening part 5 with the tip pointing diagonally upward. The abdominal girth portion 20 may be cut at.

FIG. 12 is a diagram illustrating a modification of the cutting guide section. FIG. 12 is a diagram showing a modification of the portion X of the diaper 1 shown in FIG. This will be omitted, and the structure of the cutting guide section (fixing section F1) that is different from the diaper 1 described above will be mainly explained.

Also in the form shown in FIG. 12, the fixing part F1, which fixes the abdominal girth part 20 and the fastening part 5, functions as a cutting guide part. As shown in FIG. 12, the other side (tip side) end CE of the fixing portion F1 may have an uneven portion. The fixing part F1 shown in FIG. 12 has a concave part fx that is recessed (concave) on one side in the left-right direction (base end side) and protrudes on the other side in the left-right direction (distal end side) at the other end CE. The convex portions fy are alternately provided over the entire area of the fixing portion F1 in the vertical direction. The recess fx and the convex part fy (uneven part) make it easier to provide the cutting guide starting point K, and it becomes easier to cut the abdominal girth part 20 from the cutting guide starting point K with the cutting guide part (fixed part F1).

In the cutting guide part (fixed part F1) shown in FIG. 12, the boundary between the recess fx and the protrusion fy (uneven part) serves as the cutting guide starting point K. Since the fixing part F1 shown in FIG. 12 has a plurality of recesses fx and a plurality of protrusions fy, the cutting guide part has a plurality of cutting guide starting points K. For example, a wearer or the like may grasp the abdominal girth part 20 with one hand, the fastening part 5 with the other hand, and move it in the direction of the arrow PLa in FIG. , and in the downward direction), the recess fx and the convex part fy of the fixing part F1 provided in the fastening part 5 are located above the center in the vertical direction. The boundary between the two becomes the cutting guidance starting point K, making it easier to cut at the cutting guidance part. Alternatively, the wearer or the like may grasp the ventral waist portion 20 with one hand, the fastening portion 5 with the other hand, and press the button in the direction of the arrow PLb in FIG. , and in the upward direction), the concave part fx and the convex part of the fixing part F1 provided on the fastening part 5 are located below the center in the vertical direction. The boundary with fy becomes the cutting guidance starting point K, making it easier to cut at the cutting guidance portion. The cutting guide part (fixed part F1) shown in FIG. 12 has a plurality of recesses fx and a convex part fy alternately provided over the entire area in the vertical direction of the fixed part F1, and a plurality of cutting guide starting points K. Therefore, the direction in which the fastening part is pulled is not limited to the directions PLa and PLb, and the abdominal girth part 20 can be easily cut using the cutting guidance starting point K corresponding to the direction in which the fastening part 5 is pulled by the wearer or the like. Easier to cut.

The cutting guide portion (fixed portion F1) may have a configuration as shown in FIGS. 13A and 13B. FIG. 13 is a diagram illustrating a modification of the cutting guide section. In FIGS. 13A and 13B, only the shape of the fixing portion F1 (cutting guiding portion) is shown. As shown in FIG. 13A, the cutting guide part (fixed part F1) has a convex part fy that protrudes to the other side (distal end side) in the left-right direction, and a convex part fy that protrudes to the other side in the left-right direction (proximal end side) from the convex part fy in the left-right direction. It may have a recess fx located at . Similarly, as shown in FIG. 13B, the cutting guide portion (fixed portion F1) has a recess fx recessed on one side (base end side) in the left-right direction and a recessed portion fx recessed on the other side (tip end side) in the left-right direction. It may have a convex portion fy that protrudes. In each of the fixing portions F1 shown in FIGS. 13A and 13B, a plurality of recesses fx and a plurality of convex portions fy are alternately provided over the entire area of the fixing portion F1 in the vertical direction. The cutting guidance starting point K in FIGS. 13A and 13B is the apex on the tip side of the convex portion fy, respectively.

Also in the cutting guiding part (fixing part F1) shown in FIGS. 13A and 13B, the wearer or the like grasps the abdominal girth part 20 with one hand and the fastening part 5 with the other hand. When pulling the fastening part in the direction of arrow PLa in 13B (direction toward the lower side on one side (base end side) in the left-right direction), one of the fastening parts F1 provided in the fastening part 5 , serves as the cutting guidance starting point K of the portion (upper inclined portion fa1) provided above the center in the vertical direction. In addition, the wearer or the like may grasp the abdominal girth portion 20 with one hand and the fastening portion 5 with the other hand in the direction of arrow PLb in FIGS. 13A and 13B (one side in the left-right direction (base end side) and in the upward direction), of the fixing part F1 provided on the fastening part 5, the part provided below the center in the vertical direction (lower slope This becomes the cutting guidance starting point K of the section fb1). Similarly to the fixing part F1 shown in FIG. 12, the fixing part F1 shown in FIGS. 13A and 13B is also provided with a plurality of recesses fx and a plurality of protrusions fy alternately over the entire area in the vertical direction of the fixing part F1. Since the cutting guidance starting point K is provided, the direction in which the fastening part is pulled is not limited to the directions PLa and PLb, and the cutting guidance starting point K corresponding to the direction in which the fastening part 5 is pulled by the wearer etc. is used as the cutting starting point. , it becomes easier to cut the ventral waist portion 20.

In the above-described embodiment, the diaper in which the ventral waist portion 20 and the dorsal waist portion 30 are separated and is a separate member is illustrated; , the ventral waist portion 20 and the dorsal waist portion 30 may be one continuous member.

===Second embodiment===
EMBODIMENT OF THE INVENTION Hereinafter, embodiments will be described as an absorbent article according to the present invention, taking a pants-type disposable diaper for infants as an example. However, the absorbent article according to the present invention is not limited to disposable diapers for infants, but can also be used as disposable diapers for adults, sanitary shorts, and the like.

===Configuration of disposable diaper 1===
FIG. 14 is a perspective view of the disposable diaper 1 (hereinafter referred to as "diaper") in a worn state according to the second embodiment, and is a perspective view seen from one side in the left-right direction. FIG. 15 is a plan view of the diaper 1 in its natural state, viewed from the ventral waist portion 20 side. FIG. 16 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. 16 and the like is the center line in the left-right direction in the extended state. Note that FIG. 16 shows the pant-type diaper 1 shown in FIGS. 14 and 15 in an unfolded and stretched state. Hereinafter, the center line CC in the left-right direction of the diaper 1 in each figure is the center line in the stretched state.

The "natural state" is the state in which 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 girth part 30 is pulled outward on both sides in the left-right direction, and the girth parts 20 and 30 are brought into an "stretched state", and this stretched state is continued for 15 seconds. Release the tension on the diaper 1 and place it on a flat surface such as a desk. The state after 5 minutes of being placed flat on a flat surface is defined as the natural state.

The "unfolded state" means that both sides of the diaper 1 in a pants-type state, that is, the joints 2a and 2b of the both side ends of the ventral waist part 20 and the both side ends of the back waist part 30 are separated, respectively. , which is a state in which the diaper 1 is opened and the entire diaper 1 is laid out flatly. The "stretched state" refers to a state in which the elastic member of the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 are no longer visible. Specifically, the diagram shows a state in which the dimensions of each member constituting the diaper 1 (for example, the ventral waist portion 20 described below) are stretched until the dimensions match or are close to the dimensions of the individual member.

The diaper 1 has an up-down direction, a left-right direction, and a front-back direction in the pants-shaped state shown in FIGS. 14 and 15, and has 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-back direction, the ventral side of the wearer is the front side, and the back side of the wearer is the back side. Further, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction, the side that contacts the wearer in the thickness direction is referred to as the skin side, and the side opposite to the skin side is referred to as the non-skin side. Note that the thickness direction is also a direction along the front-rear direction in a natural state.

The pants-side diaper 1 is a so-called three-piece type, and includes an absorbent main body 10, a ventral waist portion 20, and a back waist portion 30. The ventral waist portion 20 covers the wearer's ventral side, and the dorsal waist portion 30 covers the wearer's back side. The diaper 1 also has a fastening part 5.

In the diaper 1 in the unfolded state shown in FIG. 16, the ventral waist portion 20 and the back waist portion 30 are arranged such that their longitudinal directions extend along the left-right direction of the diaper 1. One longitudinal end of the absorbent main body 10 is disposed at the center of the ventral waistline section 20 in the left-right direction, and the longitudinal end of the absorbent main body 10 is arranged at the center of the dorsal waistline section 30 in the left-right direction. By arranging the end portion on the other side in the direction, the crotch portion 40 is configured. The absorbent main body 10 is arranged closer to the skin than the ventral waist portion 20 and the dorsal waist portion 30.

The diaper 1 in the unfolded state shown in FIG. By joining both side ends of the ventral waist part 20 and both sides of the dorsal waist part 30 in the direction by heat welding, ultrasonic welding, etc., to form a pair of joined parts 2a and 2b, as shown in FIG. The diaper 1 is in a pants-like state as shown in FIGS. 14 and 15. 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 disposed closer to the skin than the absorbent body 11, a second sheet 13 disposed between the top sheet 12 and the absorbent body 11, and an absorbent body 11. A side sheet 14 disposed closer to the skin than the body 11 and the second sheet 13; a liquid-impermeable backsheet 15 disposed closer to the non-skin side than the absorbent body 11; It has an exterior sheet 16 arranged therein.

The absorbent body 11 has a substantially rectangular shape in plan view, and includes an absorbent core A that absorbs and retains excreted liquid such as urine, and a liquid-permeable core wrap sheet (not shown) that covers the absorbent core. The absorbent core A may be one in which liquid absorbent fibers such as pulp containing super absorbent polymer (SAP) are molded into a predetermined shape, for example, approximately hourglass shape in plan view (molded liquid absorbent fibers); An example is a so-called SAP sheet formed by molding a superabsorbent polymer (SAP) into a sheet shape. Alternatively, the absorbent core 11A may be formed by stacking an SAP sheet and a liquid-absorbing fiber molding in the thickness direction. For example, in order from the skin side in the thickness direction, the SAP sheet, the liquid-absorbing 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 absorbent core 11 in the left-right direction. Examples of the core wrap sheet include liquid permeable sheets such as tissue paper and nonwoven fabric. Note that a configuration without a core wrap sheet may also be used.

As shown in FIG. 16, the leg expandable members 17 provided on both sides of the absorbent main body 10 in the left-right direction constitute leg gathers. The leg gathers of the pants-shaped diaper 1 are provided along each leg opening LH, and the diaper 1 fits around the wearer's legs by the expansion and contraction of the leg expansion/contraction members 17. The leg elastic member 17 of the diaper 1 uses a plurality of rubber threads, and for example, the back sheet 15 and the outer sheet 16 are folded inward in the left-right direction to form two layers of outer sheets 16. In between, the absorbent main body 10 is fixed in a stretched state in the longitudinal direction.

Leak-proof wall elastic members 18 are provided on both sides of the absorbent main body 10 in the left-right direction, on the inner side of the leg elastic members 17. A plurality of leak-proof wall expandable members 18 are fixed in an extended state in the longitudinal direction between the side sheets 14 which are folded outward in the left-right direction to form two layers. Forms a leak-proof wall. When the diaper 1 is worn, the elasticity of the leak-proof wall stretchable member 18 causes the leak-proof wall portion to stand up on the wearer's skin side and fit into the wearer's crotch area.

Examples of the leg elastic member 17 and the leakage wall elastic member 18 include rubber threads and elastic sheets.

The ventral waist portion 20 includes 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 an adhesive such as hot melt, welding using heat or ultrasonic waves. The skin-side sheet 21 and the non-skin-side sheet 22 are sheet members having approximately the same size and approximately the same shape, and in this embodiment, have approximately rectangular shapes. The non-skin side sheet 22 is arranged closer to the non-skin side than the skin side sheet 21. The skin side sheet 21 and the non-skin side sheet 22 include SMS nonwoven fabrics (spunbond, meltblown, and spunbond nonwoven fabrics), spunbond nonwoven fabrics, air-through nonwoven fabrics, point bonded nonwoven fabrics, elastic nonwoven fabrics, plastic sheets, perforated plastic sheets, and their like. A non-stretchable sheet such as a laminate sheet can be used.

The plurality of elastic members 23 of the ventral waist portion 20 are arranged in parallel in the vertical direction between the skin-side sheet 21 and the non-skin-side sheet 22, and are fixed in a stretched state in the left-right direction. Therefore, the ventral waist portion 20 expands and contracts in the left-right direction and fits around the wearer's waist. Examples of the elastic member 23 include elastic members such as rubber and spandex. The non-skin side sheet 22 has an engaged portion 25 on the non-skin side surface that allows engagement with an engaging portion 51 (described later). The engaged portion 25 is a so-called target area, and may be, for example, a nonwoven fabric sheet. In addition, when a male member of a hook-and-loop fastener is used for the engaging portion 51, an engaged portion suitable for the engaging portion 51 is selected, such as using a female member of a hook-and-loop fastener for the engaged portion 25. It is desirable to do so. Furthermore, as the engaged portion 25, the non-skin side sheet 22 made of a member (for example, nonwoven fabric) that can engage with the engaging portion 51 is used instead of providing a separate member on the non-skin side of the non-skin side sheet 22. , it may be directly engaged with the non-skin side surface of the non-skin side sheet 22.

The back waist portion 30 includes 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 a joining means such as an adhesive such as hot melt, welding using heat or ultrasonic waves, or the like. The skin-side sheet 31 and the non-skin-side sheet 32 are sheet members having approximately the same size and approximately the same shape, and in this embodiment, have approximately rectangular shapes. The non-skin side sheet 32 is arranged closer to the non-skin side than the skin side sheet 31. Examples of the skin side sheet 31 and the non-skin side sheet 32 include polypropylene SMS nonwoven fabric (spunbond, meltblown, and spunbond nonwoven fabric), spunbond nonwoven fabric, air-through nonwoven fabric, point bond nonwoven fabric, elastic nonwoven fabric, plastic sheet, and perforated plastic. Non-stretchable sheets such as sheets and laminate sheets thereof can be used.

The plurality of elastic members 33 of the back waist portion 30 are arranged in a line in the vertical direction 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 dorsal waist portion 30 expand and contract in the left and right directions to fit the wearer's waist. Examples of the elastic members 23 and 33 include elastic members such as rubber and spandex.

The fastening portion 5 is a so-called tab member, and is a member used to form a waist opening when the abdominal waist portion 20 is cut. FIG. 17 is an enlarged view of portion X in FIG. 16. In the fastening part 5 of this embodiment, the base end part (one side in the left-right direction in FIG. 16 etc.) of the fastening part 5 is fixed to one side from the center in the left-right direction of the ventral waist part 20, The distal end portion (the other side in the left-right direction in FIG. 16 etc.) has an engaging portion 51 that is separably engaged with the non-skin side surface of the ventral waist portion 20.

The fastening part 5 is a grip part that is grasped and operated by the wearer or a person who wants to make the wearer wear the diaper 1 (hereinafter also referred to as "wearer etc."), so the fastening part 5 itself is It is preferable that the material has such strength that it will not break. As the fastening portion 5, for example, various films such as a plastic film and a nylon film, a nonwoven fabric, a film obtained by laminating a nonwoven fabric, etc. can be used. The fastening part 5 of the diaper 1 of this embodiment uses a sheet-like member consisting of three layers of nonwoven fabric of the same size 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 be separably engaged with the non-skin side surface (specifically, the engaged portion 25) of the ventral waist portion 20. It is a member. Examples of the engaging portion 51 include a male member of a hook-and-loop fastener and an adhesive material such as an adhesive sheet. 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. 17 and the like, the fastening part 5 is fixed to the ventral waist part 20 by a fixing part F1 and an auxiliary fixing part 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 part 5 is fixed to the abdominal girth part 20 mainly by the fixing part F1, and the auxiliary fixing part F2 assists the fixing by the fixing part F1.

===How to wear diaper 1===
Diaper 1 can be worn in multiple ways.
For example, in a general pants-type diaper (see FIG. 14), the wearer's legs are inserted from the waist opening BH into the leg opening LH, and the waist parts 20 and 30 are pulled up to cover the wearer's waist. This allows it to be put into a worn state.

In addition, after the diaper is worn as a pants-type disposable diaper as described above, the abdominal girth portion 20 is cut with a cutting guiding portion (described later), and the engaging portion 51 of the fastening portion 5 is engaged with the ventral girth portion 20. In addition, by forming an opening around the waist, it can be put into a worn state. This makes it possible to adjust the engagement position of the engagement portion 51, making it easier to fit the wearer's waist.

Furthermore, the abdominal girth part 20 is cut in advance with the cutting guide part, and one side in the left-right direction is in the form of a so-called tape-type diaper (the leg opening LH is not formed), and the other side in the left-right direction is in the form of pants. It can also be worn as a type of diaper (with leg openings LH formed).

First, the ventral waist portion 20 is cut with the cutting guiding 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 on the other side of the wearer (in the case of the diaper 1, the wearer's right legs), then pull up the diaper 1 to the wearer's crotch area, 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, the garment is put into a worn state.

By wearing the diaper in this way, for example, infants who flap their legs and find it difficult to pass both legs through the leg openings LH on both sides of a pants-type disposable diaper can use one of the wearer's legs. If it can be passed through the leg opening LH, then it can be easily put into the wearing state by engaging with the fastening part 5 (engaging part 51). In addition, when the wearer wears Diaper 1, it may be difficult to wear a general tape-type diaper (a diaper with tape on both sides in the left and right direction) in the toilet, etc. One side is in a pants-type form and the other side is in a form (tape-type) with a fastening part 5, so that it is easy to wear and the fit around the waist can be easily adjusted.

In addition, when removing the diaper 1 from the body after use, the abdominal girth part 20 is separated by the cutting guide part, 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. By pulling out the other leg from the leg opening LH, the diaper 1 can be removed from the wearer's body.

===About cutting the ventral waist portion 20===
Cutting of the ventral waist portion 20 will be explained using FIGS. 18 and 19. FIG. 18 is a diagram illustrating the separation of the ventral waist portion 20 and the formation of the waist opening. FIG. 19 is a diagram illustrating the operation of cutting the ventral waist portion 20. FIG. 18 is a diagram illustrating the configuration of a cross section taken along the line AA in FIG. 17. Note that FIGS. 18 and 19 are schematic diagrams, and dimensions and the like are not necessarily accurate.

FIG. 18A shows the diaper 1 in a pants-like state as shown in FIG. 14 and the like. That is, the ventral waist portion 20 is not cut, and the ventral waist portion 20 and the dorsal waist portion 30 form a continuous waist opening via the joints 2a and 2b. FIGS. 18B and 19A show a state in which the distal end of the fastening part 5 is grasped and pulled up toward the non-skin side from the state shown in FIG. 18A.

Then, as shown in FIG. 19A, by grasping the waist portion 20 with one hand, grasping the fastening portion 5 with the other hand, and pulling outward in the left and right directions, as shown in FIGS. 18C and 19B. 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. The “cutting guide portion” is a guide portion used when cutting at least a portion of the ventral waist portion 20. In the diaper 1, the fixing 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. 19A, when the abdominal girth part 20 and the fastening part 5 are pulled in the left-right direction while holding them, the distalmost part of the cutting guiding part (fixing part F1) will first be pulled. The tensile force is concentrated on the cutting guidance starting point K, which is the end on the distal end side located on the side, and then the cutting guiding part is tilted upward from the cutting guidance starting point K toward the proximal end and the cutting guidance. Force is transmitted along the sloped portion that slopes downward and toward the proximal end from the starting point K. Then, the ventral waist portion 20 is cut at the other end CE in the left-right direction of the fixing portion F1, and the ventral waist portion 20 is separated from the one side portion not provided with the fastening portion 5 and the fastening portion. and the other side with 5.

Thereafter, as needed, as shown in FIG. 18D, by engaging the engaging portion 51 of the fastening portion 5 with the engaged portion 25 of the ventral waist portion 20, a waist opening of the diaper 1 is formed. Ru. When the engaging portion 51 is engaged with the engaged portion 25, one portion and the other portion of the separated abdominal girth 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 at the same time, and the portion on one side and the portion on the other side in the left-right direction of the separated abdominal girth portion overlap in the front-back direction (thickness direction). The engaging portion 51 may be engaged with the engaged portion 25 so as to prevent this from occurring. By adjusting the position where the engaging portion 51 is engaged, the size of the opening around the waist of the diaper 1 can be adjusted.

===About the cutting guide section===
As described above, in the diaper 1, both end portions of the ventral waist portion 20 and the back waist portion 30 in the left and right direction are joined at joint portions 2a and 2b, respectively. The proximal end of the fastening part 5 is connected to the ventral waist part 20, and the distal end of the fastening part 5 is provided with an engaging part that separably engages with the non-skin side surface of the ventral waist part 20. It has a joining part 51. The ventral waist portion 20 has a cutting guide portion. The cutting guide portion is provided at a different position from the joint portions 2a and 2b provided at both end portions in the left and right direction, and is a melted portion F1 in which at least a portion of the ventral waist portion 20 is melted.

FIG. 20A is a diagram illustrating the cutting guide portion of the diaper 1. FIG. FIG. 20B is a diagram illustrating a cutting guidance section using perforations. FIG. 20A is an enlarged view of portion Y in FIG. 18A, and FIG. 20B is an enlarged view of a portion where perforations are provided in the ventral waist region of a general disposable diaper. The cutting guide portion of the diaper 1 is a portion where the ventral waist portion 20 is melted.

As shown in FIG. 17 etc., when the diaper 1 pulls the abdominal girth part 20 and the fastening part 5 outward in the left-right direction, the other end CE in the left-right direction of the melting part F1 (cutting guide part) The ventral waist portion 20 is cut along the border.

As described above, perforations and the like are known as conventional cutting guide portions. As shown in FIG. 20B, regarding the cutting guidance section by the perforation M, the skin-side waist portion of the part where the perforation M is provided is a part that is easily damaged because there are holes and fewer fibers. It is. Therefore, during the manufacturing process or transportation of the disposable diaper, or when the wearer or the like handles the diaper 1, there is a risk that the ventral waist portion may be torn at the cutting guide portion, contrary to the wearer's or the like's intention. On the other hand, as shown in FIG. 20A, the melted part F is a part where the fibers are melted and solidified, and the total amount of fibers is not reduced. Therefore, by using the fused part F1 as a cutting guiding part, when performing an operation with the purpose of cutting, it is possible to cut, but when the intention is not to cut, it is possible to cut the fused part F1 against the intention of the wearer, etc. Therefore, it is possible to reduce the possibility that the abdominal girth portion 20 will be torn at the cutting guide portion.

In addition, since the melted part F1 is provided at a different position from the joining parts 2a and 2b, the ventral waistline part 20 and the dorsal waistline part 30 are not joined in the melted part F1.

The melted portion F1 of the diaper 1 is a fixed portion F1 that is fixed by welding the abdominal girth portion 20 and the fastening portion 5. In this embodiment, the fixed part F1 is also referred to as the "fusion part F1." In other words, the melted portion F1 is a portion where at least a portion of the abdominal girth portion 20 is melted, and at least a portion of the fastening portion 5 is melted to connect the ventral waist portion 20 and the fastening portion 5. It is also a fixed part F1 fixed by welding (welding part). By using the fusion part F1 that functions as a cutting guide part as the fixing part F1, there is no need to separately provide the fixing part F1 and the fusion part F1, and the diaper 1 can be manufactured in a manufacturing process that simplifies the welding process. becomes possible.

The diaper 1 of this embodiment is provided with a cutting guide part (melting part F1, fixing part F1) in the abdominal girth part 20. It is preferable that the cutting guide portion provided in the abdominal waist portion 20 is continuous from the upper end to the lower end of the abdominal waist portion 20 in the vertical direction. That is, it is preferable that the fusion part F1 (fixed part F1), which is the cutting guide part, is continuous from the upper end to the lower end of the abdominal girth part 20. The cutting guidance section by the melted part F1 in which the ventral waistline part 20 is melted reduces the possibility that the ventral waistline part 20 will be torn against the wearer's intention, and the ventral waistline part 20 can be cut according to the wearer's will. When cutting the ventral waist portion 20, the cutting guide portion is continuous from the upper end to the lower end of the ventral waist portion 20, and the ventral waist portion 20 is cut along the cutting guide portion more easily than when the cutting guide portion is discontinuous. This makes it easier to completely separate the ventral waist portion 20.

Further, it is preferable that the cutting guide part has a portion that is inclined with respect to the vertical direction, and more preferably, the cutting guide part as a whole is inclined with respect to the vertical direction. FIG. 21 is an enlarged view of the melting section F1 and the auxiliary melting section F2. In FIG. 21, the other end CE of the bordering fusion zone F1 is indicated by a thick line. The cutting guide portion of the diaper 1 of this embodiment has inclined portions fa1 and fb1 that extend from the end K closest to the distal end toward the proximal end and are inclined in the vertical direction. Since the cutting guide part is inclined with respect to the vertical direction, the possibility that the ventral waist portion 20 is torn by the cutting guide part against the intention of the wearer is reduced compared to when the cutting guide part is parallel to the vertical direction. be able to. In addition, the cutting guide part inclined with respect to the vertical direction is not limited to the linear inclined parts fa1 and fb1 like the diaper 1, but may be a part having a curved part.

As shown in FIG. 21, the end K of the cutting guide portion (molten portion F1) closest to the tip side is the cutting guide starting point K. The cutting guidance starting point K is the part where the force is most likely to be concentrated when force is applied to the abdominal girth part 20 and the fastening part 5 in order to cut the abdominal girth part 20 with the cutting guide part, and is the part where the force is most likely to be concentrated. This is also the area where cutting is likely to begin. Further, it is preferable that the cutting guide section has an upper slope part fa1 and a lower slope part fb1. The upper slope part fa1 is a slope part that slopes upward and toward the proximal side from the end K (cutting guidance starting point) closest to the distal side, and the lower slope part fb1 is sloped from the end K (cutting guidance starting point) closest to the distal side. This is an inclined portion that slopes downward and toward the proximal end from the cutting guidance starting point. As a result, the force when the wearer or the like pulls the abdominal girth part 20 and the fastening part 5 is first easily concentrated on the cutting guidance starting point K, and the force is directed upwardly from the cutting guidance starting point K. By making it easier to transmit the force to the portion fa1 and the lower inclined portion fb1, the abdominal girth portion 20 can be easily cut.

Of the angles formed by the upper inclined part fa1 and the lower inclined part fb1, it is preferable that the angle θ on the proximal end side in the left-right direction is an obtuse angle (an angle larger than 90 degrees and smaller than 180 degrees). preferable. As a result, compared to the case where θ is an acute angle, it is possible to reduce the risk of the ventral girth portion 20 breaking from the cutting guide starting point along the cutting guide portion, and even if a portion of the ventral girth portion 20 is broken, the ventral girth It is possible to reduce the possibility that all of the sections 20 will separate.

As shown in FIG. 14, the diaper 1 in the pant-shaped state before the abdominal girth part 20 is cut at the cutting guiding part (melting part F1) has the ventral waist part 20 and the dorsal waist part 30 at the joint part 2a. , 2b to form a waist opening (waist opening) BH. The waist opening BH is annular, and the direction along the waist opening is the left-right direction when viewed from the ventral waist section 20 side. Further, after cutting the ventral waist portion 20 with the cutting guiding portion, the waist opening BH is formed by engaging the engaging portion 51 of the fastening portion 5 with the non-skin side surface of the ventral waist portion 20. I can do it. After cutting the ventral waist portion 20 with the cutting guiding portion, the engaging portion 51 of the fastening portion 5 was formed by engaging the engaging portion 51 of the fastening portion 5 with the non-skin side surface of the ventral waist portion 20. The waist opening BH is also annular like the waist opening B of the diaper 1 in the pants-type state, and the direction along the waist opening is the left-right direction when viewed from the ventral waist section 20 side.

It is preferable that the diaper 1 includes an auxiliary melting section F2 different from the melting section F1. The plurality of auxiliary melting parts F2 are formed by melting at least a portion of the ventral waistline part 20, and are arranged intermittently in the vertical direction. The plurality of auxiliary melting parts F2 are preferably provided at positions closer to the proximal end of the fastening part 5 than the cutting guide part (melting part F1) in the direction along the waist opening.

As shown in FIG. 17, FIG. 21, etc., the plurality of auxiliary melting parts F2 of the diaper 1 of this embodiment are arranged intermittently so that a plurality of substantially elliptical shapes are along the cutting guide part. Moreover, the plurality of auxiliary melting parts F2 are provided at positions closer to the base end of the fastening part 5 than the melting part F1 in the direction along the waist opening (left-right direction), and in the diaper 1, in the left-right direction, It is provided on one side of the melting section F1.

By providing a plurality of such auxiliary welding parts F2, while guiding the cutting of the abdominal girth part 20 with the welding part F1, which is the cutting guidance part, the cutting can be stopped from the cutting guidance part, which is in a position contrary to the wearer's intention. It is possible to reduce the risk that the ventral waist portion 20 will be cut off on the proximal end side of the wearing part 5.

In addition, the auxiliary melting part F2 of the diaper of this embodiment is also the auxiliary fixing part F2 that assists in fixing the fastening part 5 and the ventral waist part 20. The auxiliary fixing part F2 is also a welded part in which the fastening part 5 and the abdominal girth part 20 are welded and fixed. By making the auxiliary welding part F2 the auxiliary fixing part F2 in which the fastening part 5 and the ventral waist part 20 are welded together, the fastening part F2 can be fixed while reducing the fear of cutting the ventral waist part 20 against the wearer's intention. The fixation between the portion 5 and the ventral waist portion 20 can be strengthened, and the possibility that the fastening portion 5 will be peeled off from the ventral waist portion 20 can be reduced.

Moreover, as shown in FIG. 17, it is preferable that at least a part of the plurality of auxiliary melting parts F2 has a length f2w in the left-right direction longer than a length f2t in the up-down direction (f2w>f2t). Since the length f2w in the left and right direction of the auxiliary melting part F2 is longer than the length f2t in the vertical direction, the length f2w in the left and right direction of the auxiliary melting part F2 is longer than the length f2t in the vertical direction. Compared to the case where the length is short, the risk of the skin-side waistline portion 20 breaking starting from the auxiliary melting portion F2 against forces applied to the abdomen-side waistline portion 20 from the left and right directions can be reduced.

Furthermore, the diaper 1 includes a plurality of protruding melting parts that protrude from the melting part F1 toward the proximal end, between the melting part F1 and the auxiliary melting part F2. The plurality of protruding melting parts are arranged intermittently in the vertical direction. This protruding melted part is also a welded part in which the fastening part 5 and the ventral waistline part 20 are welded together, and like the auxiliary melted part F2, the fixation between the fastening part 5 and the ventral waistline part 20 by the melted part F1 is strengthened. At the same time, it is possible to reduce the possibility that the ventral waist portion 20 will be cut off as a starting point of the protruding melted parts due to the intermittently arranged protruding melted parts.

Note that it is preferable that the arrangement patterns of the fusion part F1 and the joint part 2a are different. The melting part F1 and the joining part 2a can be provided in an appropriate arrangement pattern according to their respective uses. The shape, size, arrangement, etc. of the joint parts 2a of the fusion part F1 can be set arbitrarily. The fused portion F1 in the diaper 1 of this embodiment is a welded portion consisting of a linear upper sloped portion fa1 and a lower sloped portion fb1, as shown in FIG. As shown in the figure, there are two rows in which a plurality of oval-shaped welded parts whose length in the left-right direction is longer than the length in the vertical direction are arranged intermittently in the vertical direction, and the welded parts in the two rows are staggered with respect to each other. It is provided.

As shown in FIGS. 14 to 16, it is preferable that the cutting guide portion has a portion that overlaps with the fastening portion 5 when the diaper 1 is viewed from the ventral waist portion 20 side in the front-rear direction. In the diaper 1 of this embodiment, when looking at the diaper 1 from the side of the ventral waist portion 20, all of the cutting guide portions of the ventral waist portion 20 are covered with the fastening portions 5. The cutting guide portion covered with the fastening portion 5 is more likely to reduce the risk of tearing against the wearer's intention than the exposed portion of the cutting guide portion.

Moreover, in the abdominal girth part 20 where the fastening part 5 is fixed by the fixing part F1, as described above, the cutting guiding part is the melting part F1 and the fixing part F1. Regarding this fastening part 5, as shown in FIG. It is preferable that the length is longer than W5b (W5e>W5b). Since the cutting guide part is a fused part, cutting of the abdominal girth part 20 that is contrary to the intention of the wearer etc. is reduced, and since the cutting guide part which is the fused part F1 is also the fixed part F1, the cutting guide part When cutting the ventral waist portion 20 along the The waist portion 20 can be easily cut.

Furthermore, as shown in FIG. 17 etc., the fastening part 5 is fixed to one side in the left-right direction of the abdominal girth part 20 by a fixing part F1, and in the left-right direction, the fixing part F1 is closer to the joint part 2a. The engaging portion 51 is provided on the other side than the fixing portion F1, and the maximum length W5b from the fixing portion F1 to the proximal end of the fastening portion 5 in the left-right direction is , is preferably shorter than the maximum length W2a from the fixed part F1 to the joint part 2a (W5b<W2a). The maximum length W5b in the left-right direction from the fixed part F1 to the proximal end of the fastening part 5 is longer than the maximum length W2a in the left-right direction from the fixed part F1 to the joint part 2a. This reduces the possibility that the abdominal girth part 20 may be torn from the proximal end side of the fastening part 5 or the fixation between the fastening part 5 and the ventral waist part 20 may come apart, contrary to the intention. can be done.

Further, at least a part of the fixing part F1 is a cutting guiding part, and the fastening part 5 includes a fixing means area J provided with a fixing means for forming the fixing part F1, and the fixing part F1 has a fixing means area J provided above and below the fixing part area J. It is preferable that the length TJ in the direction is longer than the length Tf in the vertical direction of the fusion zone F1 (TJ>Tf). By making the length TJ of the fixing means region J in the vertical direction longer than the length Tf in the vertical direction of the fused portion F1, the ventral girth portion 20 is cut at the cutting guide portion (end CE of the fused portion F1). When doing so, it becomes easier to cut the ventral waist portion 20 from the upper end to the lower end, and it becomes easier to completely separate it.

The fixing part F1 of the diaper 1 of the present embodiment is a welded part in which the abdominal girth part 20 and the fastening part 5 are welded together, and the fixing means area J provided in the fastening part 5 is a welded part where the fastening part 5 is welded together. This is the melted part. As shown in FIG. 17, when viewed from the side of the ventral waist portion 20, the portion of the fixing means region J that overlaps with the ventral waist portion 20 forms a fixing portion F1, but the portion above the ventral waist portion 20 The portion J1 and the portion J2 below the ventral waist portion are not fixed to the ventral waist portion 20, and only the fastening portion 5 is melted. The fixed part F1 and the upper part J1 are continuous, and the fixed part F1 and the lower part J2 are continuous. Therefore, from the top to the bottom, part J1, melted part F1 (fixed part F1) functioning as a cutting guide part, and part J2 are continuous, with the cutting guide part (end CE of fixed part F1) as a boundary. When cutting the abdominal waist portion 20, it is easy to cut from the upper end to the lower end of the abdominal waist portion 20.

As shown in FIG. 22, etc., the ventral waist portion 20 of the diaper 1 includes an elastic member 23 that expands and contracts in the left-right direction, and includes an elastic region S that expands and contracts 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 center portion and the region from the center portion to one side end of the fastening portion 5 are the non-stretchable regions N. The stretchable region S has a one-side stretchable region Sa provided on one side and a second-side stretchable region Sb provided on the other side in the left-right direction. The area from the side end to the side end is the one-side elastic area Sa, and the area from the joint 2b to the center on the other side is the other-side elastic area Sb.

When the fastening part 5 is fixed to the abdominal waist part 20 by the fixing part F1 and the engaging part 51 separably engages with the non-skin side surface of the abdominal waist part 20, in the left-right direction, the joint part 2a and It is preferable to have one side stretchable area Sa that expands and contracts in the left-right direction between the fixed part F1, and have one side non-stretchable area Na that does not stretch in the left-right direction between the joint part 2a and the fixed part F1. . In FIGS. 17 and 22, one side non-stretchable region Na is indicated by a dotted hatching region. Then, regarding the one side elastic area Sa (elastic area) and the one side non-elastic area Na of the ventral waist portion 20, the one side elastic area Sa is adjacent to the joint part 2a from the other side in the left-right direction. It is more preferable to provide one side non-stretchable region Na so as to be adjacent to the fixed portion F1 from one side. Specifically, the one-side elastic region Sa of the diaper 1 of this embodiment is adjacent to the joint portion 2a located on one side in the left-right direction from the other side in the left-right direction (the left side in FIG. 17). Further, the one-side non-stretchable region Na is adjacent from one side in the left-right direction (the right side in FIG. 17) to the fixed part F1 located on the other side from the joint part 2a in the left-right direction.

As a result, the one side non-stretchable region Na adjacent to the fixed part F1, which is the cutting guide part and also the melted part F1, from one side in the left-right direction facilitates the cutting of the abdominal girth part 20 in the cutting guide part. At the same time, the one-side elastic region Sa adjacent to the joint portion 2a from the other side in the left-right direction makes it easier to make the waist opening BH formed using the fastening portion 5 to a size that fits the wearer's body.

Furthermore, in the left-right direction, regarding the fastening part 5 in which the fixing part F1 is provided on the other side of the joint part 2a and the engaging part 51 is provided on the other side of the fixing part F1, on one side of the fixing part F1, and , has a non-fixed portion D on the other side of the joint portion 2a. As shown in FIG. 17 and the like, when the diaper 1 is viewed from the ventral 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. The one-side elastic region Na prevents the force that moves the fastening part 5 from being buffered by expansion and contraction, and makes it easier to directly apply the force that moves the fastening part 5 to the fastening part 5. On the other hand, when looking at the diaper 1 from the ventral waist portion 20 side, the one side non-stretchable area Na and the non-fixed part D overlap, so that the non-fixed part D covers at least a part of the one-side non-stretchable area Na. , the rigidity of the portion between the joint portion 2a and the fixed portion F1 in the left-right direction can be increased, and the risk of damage to the portion between the joint portion 2a and the fixed portion F1 can be reduced.

The fastening part 5 is fixed to the ventral waistline part 20 by a fixing part F1, and the fixing part F1, which is the fusion part F1 in the cutting guide part, is a welded part where the ventral waistline part 20 and the fastening part are welded. In the diaper 1, the ventral waist portion 20 includes a stretchable region (one side stretchable region) S that stretches in the left-right direction, and the back waistline portion 30 includes a stretchable region (the other side stretchable region) S30 that stretches in the left-right direction. (Figure 16 etc.). The elastic region S30 of the dorsal trunk 30 is an area where the elastic member 33 can expand and contract in the left-right direction, and is an area from the other side end of the joint part 2a to the one side end of the joint part 2b in the left-right direction. means.

In the pants-shaped diaper 1, it is preferable that the elastic region S of the ventral waist portion 20 and the elastic region S30 of the back waist region 30 are continuous via the joints 2a and 2b. That is, on one side of the diaper 1 in the left-right direction, it is preferable that the one side stretchable region Sa of the ventral waistline portion 20 and the stretchable region S30 of the backside waistline portion 30 are continuous via the joint portion 2a. On the other side in the left-right direction, the other side stretchable region Sb of the ventral waist portion 20 is continuous with the other side elastic region Sb via the joint portion 2b.
On the other hand, the fastening part 5 has one side non-stretchable region (base end side non-stretchable region) Na that does not stretch in the left-right direction on the base end side, and the other non-stretchable region that does not stretch in the left-right direction on the distal end side. It is preferable that the first non-stretchable region Na and the other non-stretchable region Nb are continuous via the fixing portion F1.

As a result, the force applied to the joints 2a and 2b is buffered by the expansion and contraction of the stretchable region Sa and stretchable region S30 on one side and the stretchable region S30 on the other side adjacent to the joints 2a and 2b, and the force applied to the joints 2a and 2b is buffered. , 2b can be prevented from being damaged by the force applied to the joints 2a, 2b. On the other hand, regarding the fastening part 5, the force when moving the fastening part 5 can be directly applied to the fastening part 5 by the non-stretchable regions Na and Nb adjacent to the fixed part F1, so that the fastening part 5 can be fastened. It becomes easier to cut the ventral waist portion 20 using the section 5.

Further, in the diaper 1 in its natural state, it is preferable that the fastening portion 5 provided on the abdominal girth portion 20 is folded back from the rear side to the front side in the front-back direction on one side in the left-right direction. When the diaper 1 is viewed from the side of the ventral waist portion 20 in the front-rear direction, the base end portion of the fastening portion 5 is located on the rear side of the diaper 1, as shown in FIG. It is preferable that the tip of the diaper 1 be located at the frontmost side of the diaper 1. As a result, at least a portion of the front and rear sides of the waist portions 20 and 30 of the diaper 1 in the natural state, which are located on one side in the left-right direction, are covered with the fastening portions 5. The risk of the torso portions 20 and 30 being torn apart against the wearer's intention is 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 be interpreted as limiting the present invention. Further, the present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

In the above-mentioned embodiment, the melting part F1 and the auxiliary melting part F2 are the fixing part F1 and the auxiliary fixing part F2, in which the ventral waist part 20 and the fastening part 5 are welded and fixed, but the invention is not limited to this. . The melted portion F1 may be a portion in which only the ventral waist portion 20 is melted. Similarly, the auxiliary melting portion F2 may be a portion in which only the ventral waist portion 20 is melted.

In the above-mentioned embodiment, the fastening part 5 and the ventral waistline part 20 of the diaper 1 are made into separate members, and the fastening part 5 and the ventral waistline part 20 are fixed by the fixing part F1, but the invention is not limited to this. It is sufficient that the fastening part 5 is connected to the abdominal waistline part 20. For example, the fastening part 5 may have a configuration in which the ventral waistline part 20 and the fastening part are made of the same continuous member and do not have a fixing part. It's okay.

In the above-described embodiment, the fastening part 5 is connected (fixed) to the abdominal girth part 20, but the present invention is not limited thereto. The fastening portion 5 may be connected to the dorsal waistline portion 30. In this case, similarly to the ventral waist portion 20, the attachment portion of a member different from the dorsal waist portion 30 may be connected by fixing it with the fixing portion F1, and the dorsal waist portion 30 and the attachment portion may be connected. It is also possible to have a configuration in which the fixing portion F1 is made of the same continuous member and does not include the fixing portion F1. Further, the fixing of the fastening portion 5 and the waist portions 20, 30 (fixing portion F1) is not limited to joining by welding, but may be joined by a known method such as adhesive.

In the above-described embodiment, the fastening part 5 and the ventral waist part 20 are fixed by the fixing part F1, and the engaging part 51 is engaged with the non-skin side of the ventral waist part 20, but the present invention is not limited to this. do not have. The fastening part 5 and the ventral waist part 20 may be fixed by the fixing part F1, and the engaging part 51 may be engaged with the non-skin side surface of the dorsal waist part 30. Further, the fastening part 5 and the dorsal waist part 30 are fixed by the fixing part F1, and the engaging part 51 is engaged with the non-skin side surface of the ventral waist part 20 or the non-skin side surface of the dorsal waist part 30. It may be something.

Further, in the above-described embodiment, one side in the left-right direction of the diaper 1 is provided with the fastening part 5 fixed by the fixing part F1, which is also a cutting guide part, and the other side in the left-right direction is provided with the joint part 2b at the waist circumference part. Although the configuration is such that the fixing portion 5 is not provided while 20 and 30 are joined, the present invention is not limited to this. While providing a fastening part 5 fixed by a fixing part F1 which is also a cutting guide part on one side in the left-right direction of the diaper 1, the waist parts 20 and 30 are joined at a joining part 2b on the other side in the left-right direction, A fused portion serving as a cutting guide portion may be provided, or a fixing portion F1 provided as a fused portion may be used to fix the fastening portion.

In the above-described embodiment, the fused portion F1 (fixed portion F1) is continuous from the upper end to the lower end of the abdominal girth portion 20, and the entire fused portion F1 (fixed portion F1) is a cutting guide portion. Not limited to. The melted part F1 (fixed part F1) may be discontinuous, and the melted part F1 (fixed part F1) may not be provided to the upper end or lower end of the abdominal girth part 20, and the melted part F1 (fixed part F1) may be discontinuous. A part of the section F1) may be a cutting guide section. For example, the melted part F1 (fixed part F1) may be discontinuous, and the linear melted part F1 (fixed part F1) branches in the middle, and a part of the melted part F1 (fixed part F1) serves as a cutting guide part. It may be.

In the above-described embodiment, the cutting guide part includes an upper inclined part fa1 that slopes upward and toward the proximal end from the cutting guiding starting point K, and a lower inclined part fa1 that slopes downward and toward the proximal end from the cutting guiding starting point K. Although the shape has the side slope part fb1, the shape is not limited to this. The cutting guide portion may have a shape that extends in the vertical direction, or may have a shape in which the cutting guide starting point K is located at the upper end or lower end of the ventral waist portion 20 and has an inclined portion. Further, the cutting guide portion includes an inclined portion that slopes downward from the upper end of the abdominal girth portion 20 and toward the distal end portion, and an inclined portion that slopes upward from the lower end of the abdominal girth portion 20 toward the distal end portion. It may be a shape having.

In the above-described embodiment, the angle θ formed by the upper inclined part fa1 and the lower inclined part fb1 on the proximal end side of the fastening part 5 is an obtuse angle for the cutting guiding part (melting part F1, fixed part F1). , but not limited to this. Regarding the cutting guiding part (melting part F1, fixing part F1), the angle θ formed by the upper inclined part fa1 and the lower inclined part fb1 on the base end side of the fastening part 5 may be an acute angle. By using the fused part F1 as a cutting guide part and reducing the risk of unintentional tearing like when perforations are provided, by making the angle θ an acute angle, it is easier to cut in the vertical direction than when the angle θ is an obtuse angle. This makes it easier to transmit the information to the upper slope part fa1 and the lower slope part fb1, which have a steep slope relative to the slope, and it becomes easier to perform cutting at the cutting guide part.

Further, as described above, the diaper 1 can be attached to the abdominal girth by grasping the ventral girth 20 with one hand, grasping the fastening portion 5 with the other hand, and pulling outward in the left and right directions. 20 can be cut along the cutting guide. In FIGS. 19A and 19B, by pulling horizontally (parallel to the width direction of the diaper 1) one hand gripping the ventral waist portion 20 and the other hand gripping the fastening part 5, the fastening part The force was concentrated on the cutting guidance starting point K located closest to the distal end of the cutting guidance point K, and the abdominal girth part 20 was cut along the cutting guidance part (fixed part F1) from the cutting guidance starting point K. However, the cutting is not necessarily limited to this cutting. I can't do it. For example, pulling the fastening part 5 in any direction, such as pulling the fastening part 5 with the tip pointing diagonally downward or pulling the fastening part 5 with the tip pointing diagonally upward. The abdominal girth portion 20 may be cut at.

FIG. 23 is a diagram illustrating a modification of the cutting guide section. FIG. 23 is a diagram showing a modification of the portion X of the diaper 1 shown in FIG. This will be omitted, and the structure of the cutting guide section (fixing section F1) that is different from the diaper 1 described above will be mainly explained.

Also in the form shown in FIG. 23, the fixing part F1 that fixes the ventral waist part 20 and the fastening part 5 functions as a cutting guide part. As shown in FIG. 23, the end CE on the other side (tip end side) of the fixing part F1 may have an uneven part. The fixing part F1 shown in FIG. 23 has a concave part fx that is recessed (concave) on one side in the left-right direction (base end side) and protrudes on the other side in the left-right direction (tip side) at the other end CE. The convex portions fy are alternately provided over the entire area of the fixing portion F1 in the vertical direction. The recess fx and the convex part fy (uneven part) make it easier to provide the cutting guide starting point K, and it becomes easier to cut the abdominal girth part 20 from the cutting guide starting point K with the cutting guide part (fixed part F1).

In the cutting guide part (fixed part F1) shown in FIG. 23, the boundary between the recess fx and the protrusion fy (uneven part) is the cutting guide starting point K. Since the fixing part F1 shown in FIG. 23 has a plurality of recesses fx and a plurality of protrusions fy, the cutting guide part has a plurality of cutting guide starting points K. For example, a wearer or the like may grasp the abdominal girth part 20 with one hand, the fastening part 5 with the other hand, and move it in the direction of the arrow PLa in FIG. , and in the downward direction), the recess fx and the convex part fy of the fixing part F1 provided in the fastening part 5 are located above the center in the vertical direction. The boundary between the two becomes the cutting guidance starting point K, making it easier to cut at the cutting guidance part. Alternatively, the wearer or the like may grasp the ventral waist portion 20 with one hand, the fastening portion 5 with the other hand, and press the button in the direction of the arrow PLb in FIG. , and in the upward direction), the concave part fx and the convex part of the fixing part F1 provided on the fastening part 5 are located below the center in the vertical direction. The boundary with fy becomes the cutting guidance starting point K, making it easier to cut at the cutting guidance portion. The cutting guide part (fixed part F1) shown in FIG. 23 includes a plurality of recesses fx and a convex part fy alternately provided over the entire area in the vertical direction of the fixed part F1, and a plurality of cutting guide starting points K. Therefore, the direction in which the fastening part is pulled is not limited to the directions PLa and PLb, and the abdominal girth part 20 can be easily cut using the cutting guidance starting point K corresponding to the direction in which the fastening part 5 is pulled by the wearer or the like. Easier to cut.

The cutting guide portion (fixed portion F1) may have a configuration as shown in FIGS. 24A and 24B. FIG. 24 is a diagram illustrating a modification of the cutting guide section. In FIGS. 24A and 24B, only the shape of the fixing portion F1 (cutting guiding portion) is shown. As shown in FIG. 24A, the cutting guide part (fixed part F1) has a convex part fy that protrudes to the other side (distal end side) in the left-right direction and one side (base end part side) from the convex part fy in the left-right direction. It may have a recess fx located at . Similarly, as shown in FIG. 24B, the cutting guide part (fixed part F1) has a recess fx recessed on one side (base end side) in the left-right direction and a recessed part fx recessed on the other side (distal end side) in the left-right direction. It may have a convex portion fy that protrudes. In each of the fixing portions F1 shown in FIGS. 24A and 24B, a plurality of recesses fx and a plurality of convex portions fy are alternately provided over the entire area of the fixing portion F1 in the vertical direction. The cutting guidance starting point K in FIGS. 24A and 24B is the apex on the tip side of the convex portion fy, respectively.

Also in the cutting guiding part (fixing part F1) shown in FIGS. 24A and 24B, the wearer or the like grasps the abdominal girth part 20 with one hand and the fastening part 5 with the other hand, and When pulling the fastening part in the direction of the arrow PLa in 24B (direction toward the lower side on one side (base end side) in the left-right direction), one of the fastening parts F1 provided in the fastening part 5 , serves as the cutting guidance starting point K of the portion (upper inclined portion fa1) provided above the center in the vertical direction. In addition, the wearer or the like may grasp the abdominal girth portion 20 with one hand and the fastening portion 5 with the other hand in the direction of the arrow PLb in FIGS. 24A and 24B (one side in the left-right direction (the proximal end side) and in the upward direction), of the fixing part F1 provided on the fastening part 5, the part provided below the center in the vertical direction (lower slope This becomes the cutting guidance starting point K of the section fb1). Similarly to the fixing part F1 shown in FIG. 23, the fixing part F1 shown in FIGS. 24A and 24B is also provided with a plurality of recesses fx and a plurality of protrusions fy alternately over the entire area in the vertical direction of the fixing part F1. Since the cutting guidance starting point K is provided, the direction in which the fastening part is pulled is not limited to the directions PLa and PLb, and the cutting guidance starting point K corresponding to the direction in which the fastening part 5 is pulled by the wearer etc. is used as the cutting starting point. , it becomes easier to cut the ventral waist portion 20.

In the above-described embodiment, the diaper in which the ventral waist portion 20 and the dorsal waist portion 30 are separated and is a separate member is illustrated; , the ventral waist portion 20 and the dorsal waist portion 30 may be one continuous member.

1 Diapers (disposable diapers, absorbent articles),
2a, 2b joint,
5 Fastening part,
10 absorbent main body, 11 absorbent body, 11A absorbent core,
12 top sheet, 13 second seat, 14 side seat,
15 back seat, 16 exterior sheet,
17 Leg circumference elastic member, 18 Leakage prevention wall elastic member,
20 Ventral girth part (one side girth part),
21 Skin side sheet (torso sheet member),
22 Non-skin side sheet (waistline sheet member),
23 Telescopic member,
25 engaged part,
30 dorsal girth part (other side girth part),
31 skin side sheet, 32 non-skin side sheet, 33 elastic member,
51 Engagement part,
BH Waist opening (waist opening), LH Leg opening,
F1 fixed part, melted part,
F2 Auxiliary fixing part, auxiliary melting part,
fa1 slope part, upper slope part,
fb1 slope part, lower slope part,
K cutting guidance starting point,
S stretch area (one side stretch area),
S30 elastic area (other side elastic area),
Sa one side stretchable area (stretchable area), Sb other side stretchable area,
N Non-stretchable area

Claims (19)

It has a vertical direction, a horizontal direction, and a front-back direction that are orthogonal to each other,
An absorbent article having a waist region including a waist region on one side and a waist region on the other side, and a crotch region,
At least one end of the one-side waistline portion and the other side waistline portion in the left-right direction are joined at a joint portion,
It has a fastening part,
A base end portion of the fastening portion is fixed to the waist portion with 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,
An absorbent article characterized in that at least a portion of the fixing portion also serves as a cutting guide portion when cutting at least a portion of the waist portion. The absorbent article according to claim 1,
When the absorbent article is viewed from the one side waistline side in the front-rear direction, in an adjacent region adjacent to the fixing part from the tip end side of the fastening part,
An absorbent article characterized in that the smallest weight per unit area of the fastening portion is greater than the highest weight per unit area of the waist portion. The absorbent article according to claim 1 or 2,
The waist portion is formed of one or more waist sheet members,
The fastening part is formed of one or a plurality of fastening part sheet members,
When the absorbent article is viewed from the one side waistline side in the front-rear direction, in an adjacent region adjacent to the fixing part from the tip end side of the fastening part,
An absorbent article characterized in that the smallest weight per unit area of the one or more fastening section sheet members is greater than the highest weight per unit area of the one or more waist circumference sheet members. The absorbent article according to claim 1 or 2 ,
Of the cutting guide part, the end of the fastening part closest to the distal end is a cutting guide starting point,
The absorbent article is characterized in that the cutting guide portion has an inclined portion that extends from the end closest to the distal end toward the proximal end and that is inclined with respect to the vertical direction. The absorbent article according to claim 1 or 2 ,
Of the cutting guide part, the end of the fastening part closest to the distal end is a cutting guide starting point,
The cutting guide part is
an upper sloped portion that slopes upward from the end closest to the distal end and toward the proximal end;
An absorbent article comprising: a lower sloped portion that slopes downward from the end closest to the distal end and toward the proximal end. The absorbent article according to claim 5,
An absorbent article characterized in that, among the angles formed by the upper inclined part and the lower inclined part, the angle on the base end part side in the left-right direction is an obtuse angle. The absorbent article according to claim 5,
An absorbent article characterized in that, among the angles formed by the upper inclined part and the lower inclined part, the angle on the base end part side in the left-right direction is an acute angle. The absorbent article according to claim 4 ,
It has an absorbent core that absorbs liquid,
The absorbent article, wherein the cutting guidance starting point is provided on the one side of the absorbent core in the left-right direction. The absorbent article according to claim 4 ,
The absorbent article is characterized in that the cutting guidance starting point overlaps the engaging portion in the up-down direction. The absorbent article according to claim 1 or 2 ,
The absorbent article is characterized in that, in the up-down direction, the cutting guide section is continuous from an upper end to a lower end of the waist portion where the fixing section is provided. The absorbent article according to claim 1 or 2 ,
an auxiliary fixing part that assists in fixing the fastening part and the waist part provided with the fixing part;
The absorbent article is characterized in that the auxiliary fixing parts are arranged intermittently in the vertical direction closer to the proximal end of the fastening part than the cutting guiding part. The absorbent article according to claim 1 or 2 ,
In the fastening part, the maximum length in the left-right direction from the fixing part to the end on the distal end side is longer than the maximum length in the left-right direction from the fixing part to the end on the base end side. Absorbent articles with special features. The absorbent article according to claim 1 or 2 ,
The absorbent article is characterized in that the cutting guide portion is a welded portion where the waist portion and the fastening portion are welded together. The absorbent article according to claim 13,
In the front-back direction,
The melting point of the member located closest to the fastening part in the front-rear direction of the waist part is lower than the melting point of the member of the fastening part located closest to the waist part in the front-rear direction. An absorbent article characterized by: The absorbent article according to claim 1 or 2 ,
It has an absorbent core that absorbs liquid,
The fastening part is fixed to the one side waistline part by the fixing part,
An absorbent article characterized in that the cutting guide section is provided between the joint section and the absorbent core in the left-right direction. The absorbent article according to claim 1 or 2 ,
An absorbent article characterized in that all of the fixing parts are the cutting guide parts. The absorbent article according to claim 1 or 2 ,
In the waist portion provided with the fixing portion, a portion extending a predetermined distance from the cutting guide portion toward the tip end of the fastening portion is a non-stretchable region in which the waist portion does not expand or contract in the left-right direction. An absorbent article characterized by: The absorbent article according to claim 1 or 2 ,
An absorbent article characterized in that, in the waist portion where the fixing portion is provided, an adhesive is applied to a portion at a predetermined distance from the cutting guide portion toward the tip end side of the fastening portion. . The absorbent article according to claim 1 or 2 ,
An absorbent article characterized in that an end of the fastening portion on the tip side has an uneven portion.

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