CN109906067B

CN109906067B - Belt type diaper

Info

Publication number: CN109906067B
Application number: CN201780067046.7A
Authority: CN
Inventors: 坂口智; 山中康弘; 辻井真纪
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2016-10-31
Filing date: 2017-08-08
Publication date: 2022-01-07
Anticipated expiration: 2037-08-08
Also published as: JP2018068717A; CN109906067A; WO2018079009A1; JP6740085B2

Abstract

A belt diaper (1) for a low-weight infant has a maximum length in the length direction of 330mm or less. The belt diaper comprises: a pair of side flaps (20) located on one side in the longitudinal direction, a fastening tape (40) fixed to the pair of side flaps (20); a pair of three-dimensional gather portions (50). Each of the three-dimensional gather sections (50) includes: an elastic member (51); a pair of base ends (52) which are positioned at both ends in the longitudinal direction and cannot stand in the thickness direction; and a rising portion (54) that can rise toward the skin side in the thickness direction. The other side end of the base end part (52) located on one side is aligned with the other side end of the fastening band (40) with respect to the longitudinal direction, or is located toward the other side than the other side end of the fastening band (40). The elastic member (51) has an elongation ratio of 1.5 to 2.0 times.

Description

Belt type diaper

Technical Field

The present invention relates to a belt diaper for low-weight infants.

Background

A belt diaper generally has a first waist portion, a crotch portion, and a second waist portion as portions arranged side by side in a longitudinal direction, and also has a plurality of fastening tapes extending laterally outward from both sides of the first waist portion. The belt diaper is put on by the wearer by locking the plurality of fastening belts to the second waist portion.

Belt diapers are commonly used for infants, and are generally the following: infants with a low weight at birth, such as below 3000 grams, will maintain their position in the uterus, i.e. a prone position with the knees pulled into and substantially touching the abdominal region of the infant. In view of this, patent document 1 discloses the following diaper: the absorber has a contracted portion that is curved inward in the width direction, and the contracted portion is formed at a position toward the second waistline portion side (the side opposite to the fastening tape side) in the longitudinal direction.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5740520

Disclosure of Invention

Problems to be solved by the invention

In the diaper of patent document 1, a pair of three-dimensional gather portions standing up toward the skin side are provided at both side portions in the width direction, respectively. The three-dimensional gather portions each include: a pair of base end portions, wherein both longitudinal end portions of the sheet are fixed to a main body portion of the diaper so as not to be able to stand up; and a rising portion that extends between both end portions and can rise due to contraction of the elastic member.

Belt diapers are typically worn by infants placed in a face-up position. However, when the belt diaper is worn on a low-weight infant, from the viewpoint of "minimum handling" in which it is desired to contact the body of the infant as little as possible, there are cases where: the diaper is put on with the infant kept in the aforementioned prone position.

For this reason, if the length of the base end portion of the three-dimensional gather portion is too short, the region of the three-dimensional gather portion away from the leg opening will unnecessarily expand and/or stand up when pulling the plurality of fastening tapes. If this occurs, the excrement can easily leak.

In addition, when the diaper is put on, the diaper is unfolded in the longitudinal direction and passed between the legs of the prone infant from the hip side (back side) toward the abdomen side. For this reason, if the contractive force of the elastic member in the three-dimensional gather portion is strong, the diaper is liable to bend in the longitudinal direction and fold at the folding position used during packaging, and thus it is difficult to pass the diaper between the legs of the infant, and therefore the diaper cannot be easily put on.

In view of this, an aspect of the present invention is to provide a belt diaper that suppresses leakage of excrement and can also be easily put on.

Means for solving the problems

A main aspect of the present invention for achieving the above-described aspect is a belt diaper, which is used for a low-weight infant,

the belt diaper has a longitudinal direction, a width direction and a thickness direction,

the belt diaper has a maximum length direction length of 330mm or less in an unfolded and extended state,

the belt diaper can be worn in either of two front-to-back orientations,

the belt diaper comprises:

a pair of side flaps extending outward on both sides of the width direction on one side in the length direction;

a fastening belt is fixed on the side wing pieces; and

a pair of three-dimensional gather portions located at both side portions in the width direction,

the three-dimensional gather portion includes:

an elastic member that is capable of expanding and contracting in the longitudinal direction;

a pair of base end portions,

which are located at both ends in the longitudinal direction and

cannot stand in the thickness direction; and

a rising part is arranged at the bottom of the water tank,

which is located between the pair of basal ends and

can stand up on the skin side in the thickness direction due to the elastic member,

a position of the other side end of the base end portion on the one side is located at any one of the following positions in the longitudinal direction:

a position identical to that of the other side end of the fastening band; or

Is located at the other side position relative to the other side end of the fastening band, and

the elastic member has an elongation ratio of 1.5 to 2.0,

the side flap has a wide portion in which a length of the side flap in the width direction is largest,

the central position of the fastening band is located on the other side in the longitudinal direction with respect to the central position of the wide portion.

Other features of the present invention than the above will become apparent by reading the description of the present specification with reference to the accompanying drawings.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a belt diaper that suppresses leakage of excrement and can also be easily put on can be provided.

Drawings

Fig. 1A and 1B are views showing a wearing state of a belt diaper 1 according to an embodiment of the present invention.

Fig. 2 is a schematic plan view of the diaper 1 in an unfolded and elongated state as viewed from the skin side in the thickness direction.

Fig. 3A is a schematic cross-sectional view of the diaper 1 in the first waist portion 1A, and fig. 3B is a schematic cross-sectional view of the diaper 1 in the crotch portion 1B.

Fig. 4 is a view showing a three-dimensional gather portion 50.

Fig. 5A and 5B are diagrams showing a folded state of the diaper 1 during packaging, and fig. 5C is a diagram showing a wearing state of the diaper 1' according to a comparative example.

Fig. 6A is a view showing the shape of the side flap 20 on the first waist portion 1A side, and fig. 6B is a view showing the easy-tear line 60.

Fig. 7 is a schematic plan view of a diaper 1 according to a modification.

Detailed Description

At least the following matters will become clear from the description of the present specification and the accompanying drawings.

A belt diaper for a low-weight infant,

the belt diaper can be worn in either of two front-to-back orientations,

the belt diaper comprises:

a fastening belt is fixed on the side wing pieces; and

the three-dimensional gather portion includes:

a pair of base end portions,

which are located at both ends in the longitudinal direction and

cannot stand in the thickness direction; and

a rising part is arranged at the bottom of the water tank,

which is located between the pair of basal ends and

a position identical to that of the other side end of the fastening band; or

the elastic member has an elongation ratio of 1.5 to 2.0.

According to this belt diaper, even in the case of a low-weight infant being worn in a prone position held in the uterus, that is, even in the case where the plurality of fastening tapes are pulled in a state where the portions of the three-dimensional gather portion surrounding the side flaps are not fixed between the wearer and the floor, it is possible to prevent the three-dimensional gather portion from spreading and rising at unnecessary positions outside the crotch portion, thus suppressing leakage of excrement. In addition, since the stretch ratio of the elastic member is relatively low, the diaper can be easily maintained in a state of being developed in the longitudinal direction. This enables the diaper to be smoothly passed between the legs of a low-weight infant in a prone position from the hip region toward the abdomen, and thus the diaper can be easily put on.

In such a belt diaper, it is desirable that,

a pair of leg elastic members stretchable in the longitudinal direction is provided so as to fit around the legs of the wearer, and

the stretch ratio of the leg elastic member is 1.5 to 2.0.

According to this belt diaper, the state in which the diaper is unfolded in the longitudinal direction is easily maintained, and the diaper can be smoothly passed between the legs of a low-weight infant in the prone position, so the diaper can be easily put on.

In such a belt diaper, it is desirable that,

the fastening tape extends from the wide portion to the outside in the width direction,

the belt diaper has an imaginary line at the side flaps,

the imaginary line connecting

Another side end included in the side flap and farthest from the other side in the length direction and

another side end included in the wide portion and farthest from the other side in the length direction,

the imaginary line is inclined toward the other side in the length direction to the inner side in the width direction, and

at the side flap, in a rectangular area having the imaginary line as a diagonal line,

the area where the side flap is present is smaller than the area where the side flap is not present.

According to the belt diaper, the leg openings are wide, so the wearer can easily bend their legs sharply as they are in the uterus, and the comfort can be improved. In addition, the side flaps have a small area, thus making the side flaps less likely to become caught when the diaper is passed between the legs of a low-weight infant in the prone position. For this reason, the diaper can be smoothly passed through, and the diaper can be passed through between the legs to a position that surely covers the abdominal region of a low-weight infant, the diaper is put on the low-weight infant at a proper position, and the diaper can be easily put on.

In such a belt diaper, it is desirable that,

in the case of the side flap panel,

the wide portion has a length in the length direction that is less than 2 times a length of the fastening tape in the length direction.

According to this belt diaper, the length of the wide portion need not be long relative to the plurality of fastener tapes extending from the wide portion, and the side flaps have a small area. Therefore, the side flaps are not easily caught when the diaper is passed between the legs of a low-weight infant in the prone position. For this reason, the diaper can be smoothly passed through, the diaper can be passed through between the legs to a position that surely covers the abdominal region of the low-weight infant, the diaper is put on the low-weight infant at a proper position, and the diaper can be easily put on.

In such a belt diaper, it is desirable that,

with regard to the fastening tape, it is preferable that,

the central position of the fastening tape is located at any one of the following positions in the longitudinal direction:

the same position as the center position of the wide portion; or

A position on the other side with respect to a central position of the wide portion.

According to this tape diaper, when the diaper with the fastening tape side being worn on the front side is worn between the legs of a low-weight infant in the prone position, the plurality of fastening tapes are less likely to be caught directly by the wearer, and the load on the skin of the wearer can be reduced.

In such a belt diaper, it is desirable that,

the tape diaper further comprises a tear line for separating at least the part of the diaper to which the fastening tape is fixed, and

one end of the tear line is located on the other side with respect to another side end included in the side flap and farthest from the other side in the length direction.

According to this tape diaper, one end of the easy-tear line is disposed at a position offset from the base portion of the side flap (the end farthest on the other side), and at this position, the force is easily concentrated, so that accidental tearing of the easy-tear line can be suppressed.

In such a belt diaper, it is desirable that,

a plurality of holes that completely penetrate in the thickness direction and/or a plurality of holes that do not completely penetrate in the thickness direction are intermittently arranged in the easy-to-tear line,

for the easy-tear line, one end of the easy-tear line extends toward the widthwise side end of the tape diaper, and

with respect to the easy-tear line, the hole is located on the width direction inner side with respect to the width direction side end.

According to the tape diaper, it is possible to prevent the easy-tear line from being accidentally torn at the hole located at the side end of the diaper.

In such a belt diaper, it is desirable that,

the belt diaper further comprises an absorbent body, and

for the fastening tape, in the longitudinal direction,

a side end included in the fastening tape and farthest at the one side coincides with a side end included in the absorbent body and farthest at the one side.

According to this tape diaper, when the diaper in a state in which the fastening tape side is threaded on the front side is threaded between the legs of a low-weight baby in a prone position, the diaper can be prevented from starting to wrinkle at two points (the ends of the plurality of fastening tapes and the ends of the absorber) which are arranged offset in the longitudinal direction. Therefore, the diaper can be smoothly passed through, and the diaper can be easily put on.

In such a belt diaper, it is desirable that,

the belt diaper further comprises an absorbent body, and

the absorbent body has a first fold guide in a central portion in the longitudinal direction and a second fold guide on the other side in the longitudinal direction with respect to the first fold guide,

the first folding guide portion extends in the width direction,

the second fold guide portion extends in the width direction.

According to this tape diaper, when the portion to which the fastening tapes are fixed is positioned on the back of the wearer, the absorber can easily fit a low-weight infant in a posture taken in the uterus. Therefore, leakage of excrement is suppressed, and comfort can be improved.

Embodiments of the present invention are described in detail below with reference to the accompanying drawings

Fig. 1A and 1B are views showing a wearing state of a belt diaper 1 (hereinafter, referred to as "diaper") according to an embodiment of the present invention. Fig. 2 is a schematic plan view of the diaper 1 in an unfolded and elongated state as viewed from the skin side in the thickness direction. Fig. 3A is a schematic cross-sectional view of the diaper 1 in the first waist portion 1A. Fig. 3B is a schematic sectional view of the diaper 1 in the crotch portion 1B. Fig. 4 is a schematic plan view of the diaper 1, and shows a three-dimensional gather portion 50.

The diaper 1 of the present embodiment has a maximum length direction length of 330mm or less (so-called product length, L1 in fig. 2) when in the unfolded and extended state shown in fig. 2, and is suitable for use with infants having a body weight of 3000 grams or less (hereinafter referred to as "low-weight infants"). More particularly, the product length is preferably in the range of 210mm to 330mm, even more particularly, the product length is preferably about 310mm for low weight infants weighing less than 2500 grams, the product length is preferably about 270mm for low weight infants weighing less than 1500 grams, and the product length is preferably about 230mm for low weight infants weighing less than 1000 grams.

In addition, the waist size of the diaper 1 in the as-worn state is preferably in the range of 160mm to 295mm, about 273.5mm for low-weight infants weighing less than 2500 grams, about 220mm for low-weight infants weighing less than 1500 grams, and about 219mm for low-weight infants weighing less than 1000 grams. The term "waistline size in a worn state" refers to a size in a state where a front end in the width direction of one fastening tape 40 described later is placed at a side end of the other fastening tape 40 located at a base end side in the width direction of the hook member 42. Note that, in the case where the elastic member is provided in the waistline region, the aforementioned dimension is a dimension in a state where the diaper 1 has been elongated in the width direction.

Note that the state in which the diaper 1 has been extended refers to a state in which the diaper 1 has been extended to the following extent: the folds formed in the diaper 1 are substantially no longer visible, or in other words the state in which the diaper 1 is extended in the following manner: the length of a constituent member (for example, a side sheet 6 described later) of the diaper 1 is identical to or close to the size of the member itself.

< < basic construction of diaper >)

In the developed state shown in fig. 2, the diaper 1 has a longitudinal direction, a width direction, and a thickness direction, and has a first waist portion 1A, a crotch portion 1B, and a second waist portion 1C which are arranged side by side from one side in the longitudinal direction. As shown in fig. 3A and the like, the thickness direction is a direction in which members constituting the diaper 1 are stacked. The side that contacts the wearer in the thickness direction will be referred to as the "skin side", and the opposite side will be referred to as the "non-skin side".

As shown in fig. 3A and the like, the diaper 1 includes: an absorbent body 2 that absorbs excreted fluid such as urine; a liquid-permeable top sheet 3 that covers the absorbent body 2 from the skin side; a liquid-impermeable leakproof sheet 4 covering the absorbent body 2 from the non-skin side; an outer sheet 5 that covers the leakproof sheet 4 from the non-skin side and forms the outer shape of the diaper 1; and a pair of side sheets 6 provided side by side in the width direction on the front sheet 3.

Note that the front sheet 3 can be made of air-permeable nonwoven fabric or the like, the leakproof sheet 4 can be made of a resin film (e.g., polyethylene film) or the like, and the exterior sheet 5 and the side sheet 6 can be made of a flexible sheet made of SMS nonwoven fabric (spunbond/meltblown/spunbond nonwoven fabric) or the like, or the like.

The absorbent body 2 has a rectangular planar shape long in the longitudinal direction, and has an absorbent core 2A and a core wrap sheet 2B covering the outer peripheral surface of the absorbent core 2A. The absorbent core 2A is obtained by molding a liquid absorbent material into a predetermined shape. The absorbent core 2A of the present embodiment is substantially rectangular and has notch portions 71a to 72A described later. The liquid-absorbent material can be made of liquid-absorbent fibres (e.g. pulp fibres) comprising superabsorbent polymers (so-called SAP). The core-covering sheet 2B can be made of liquid-permeable tissue paper, nonwoven fabric, or the like, but a configuration is also possible in which the absorbent body 2 does not include the core-covering sheet 2B.

In the unfolded state (fig. 2), the diaper 1 has an approximately hourglass shape, and the first and

second waist portions

1A and 1C have a pair of side flaps 20 and 30, respectively, which extend outward beyond the crotch portion 1B on both sides in the width direction. As shown in fig. 3A, the

side panels

20 and 30 are formed of the side panel 6 and the exterior panel 5. Further, a plurality of fastening tapes 40 are fixed to the widthwise outer end portions of the pair of side flaps 20 of the first waist section 1A.

The plural pieces of fastening tapes 40 each have a tape base member 41 and a hook member 42. The base member 41 is a member made of nonwoven fabric or the like, and is shaped approximately in the shape of a rectangle long in the width direction. A hook member 42 (e.g., a male member of a hook-and-loop fastener) is provided on the skin-side surface of the portion of the belt base member 41 extending outward from the side flap 20 in the width direction.

When the diaper 1 is to be put on, the diaper 1 is unfolded, pressed against the wearer, and folded at substantially the center in the longitudinal direction, and the pair of side flaps 20 on the first waist body portion 1A side are folded inward in the width direction. Then, the hook members 42 provided in the two-piece fastening tape 40 are locked to the non-skin side of the second waist body portion 1C. In the present embodiment, the exterior sheet 5 is made of nonwoven fabric, thus allowing the hook members 42 to be directly locked to the exterior sheet 5. It should be noted that there is no limitation to this, and a member (such as a female member of a hook-and-loop fastener) capable of easily locking the hook member 42 may be provided separately from the exterior sheet 5. In addition, a plurality of pieces of adhesive tape or the like may be provided in the plurality of pieces of fastening tape 40 in place of the hook member 42.

In addition, the diaper 1 has a pair of three-dimensional gather portions 50 serving as leakage preventing walls at positions in both side portions in the width direction. As shown in fig. 4, each of the three-dimensional gather portions 50 includes: a three-dimensional gather portion elastic member 51 (e.g., elastic thread) which is stretchable in the longitudinal direction; a pair of first base ends 52 (base ends of the present invention) which are located at both longitudinal ends and cannot rise in the thickness direction; a second base end portion 53 which extends over the entire range of the diaper 1 in the longitudinal direction at a position outside the first base end portion 52 in the width direction and which cannot stand up in the thickness direction; and a rising portion 54 that can rise in the thickness direction on the skin side.

The first and second base ends 52, 53 are shaped as narrow rectangles that are long in the length direction, and are formed by the side sheet 6 fixed to the front sheet 3. This fixation can be performed using a known fusion method, bonding with a hot-melt adhesive, or the like. Note that, in fig. 4, in each of the lengthwise direction end portions of each of the three-dimensional gather portions 50, two first base end portions 52 are arranged side by side in the width direction, but the number of first base end portions is not limited to two.

Further, as shown in fig. 3B, the inner side portion in the width direction of each side sheet 6 is folded back onto the skin side to form a two-layer side sheet 6, and an elastic member 51 for the three-dimensional gather portion 50 is fixed between the two layers in a state of being elongated in the longitudinal direction. Therefore, in each of the three-dimensional gather portions 50, due to contraction of the elastic member 51, the standing portion 54 as a portion of the side sheet 6 between the pair of first base end portions 52 stands up toward the skin side in the thickness direction with the second base end portion 53 as a supporting point. Note that although each three-dimensional gather portion 50 has one elastic member 51 in fig. 4, there is no limitation to this, and a plurality of elastic members 51 may be arranged side by side in the width direction.

In order to accommodate the legs of the wearer, a pair of leg-surrounding elastic members 7 (e.g., elastic threads) that are stretchable in the longitudinal direction are provided mainly in the crotch portion 1B on each of the two side portions of the diaper 1 in the width direction. Specifically, in the expanded and stretched state, the leg hole elastic member 7 is provided on the outer side in the width direction with respect to the elastic member 51 for the three-dimensional gather portion 50. The leg-surrounding elastic members 7 are fixed to the non-skin side of the side sheet 6 in a state of being elongated in the longitudinal direction. Therefore, when the diaper 1 is worn, the side portions of the diaper 1 in the width direction fit to the legs of the wearer, and leakage of excrement is suppressed. Note that although two leg hole elastic members 7 are arranged side by side in the width direction in each width direction side portion of the diaper 1 in fig. 2, the number of leg hole elastic members is not limited to two.

Although the elastic threads are illustrated as examples of the elastic member 51 and the leg-surrounding elastic member 7 for the three-dimensional gather portion 50 in the above description, they are not limited to the elastic threads. These

elastic members

51 and 7 may be made of, for example, a stretchable film in which linear polyurethane stretchable fibers or thermoplastic elastic resin are melted to form a film, or a stretchable nonwoven fabric made of stretchable fibers.

< characteristics of diaper for low-body-weight infant >

Fig. 5A and 5B are diagrams showing an unfolded state of the diaper 1 during packaging, and fig. 5C is a diagram showing a worn state of the diaper 1' according to a comparative example. Fig. 6A is a view showing the shape of the side flap 20 on the first waist portion 1A side, and fig. 6B is a view showing the easy-tear line 60. Fig. 7 is a schematic plan view of a diaper 1 according to a modification.

The belt diaper is usually packaged in a state of being folded once in the longitudinal direction. In the present embodiment, the diaper 1 is also packaged in a state where the side flaps 20 and 30 are folded inward in the width direction as shown in fig. 5A, and the diaper 1 is folded once at an approximately central position P in the length direction as shown in fig. 5B.

In the case of wearing a belt diaper on an infant having a weight of more than 3000 g, the diaper is generally unfolded in the lengthwise direction, and then the infant is placed on the diaper with its face up. Thus, the first waist portion 1A provided with the multi-piece fastening tape 40 covers the back side, and the second waist portion 1C is disposed so as to cover the abdomen side.

On the one hand, in the case of a low-weight infant having a low body weight of 3000 grams or less (particularly less than 2500 grams) at birth, some believe that it is desirable for the infant to maintain a prone position as when in the uterus. As shown in fig. 1A and the like, the posture when in the uterus is as follows: the back is bent into a C-shape, the legs are stretched into an M-shape, and the knees are drawn in (pull in) and essentially touch the abdominal area of the infant. This posture, which is unique to low weight infants, will also be referred to hereinafter as the "flexed prone posture".

There is also the concept of "minimal handling", which is to say that it is desirable to touch the body of a low-weight baby as little as possible.

Therefore, there are cases where: the diaper 1 is worn on a low-weight infant while the infant is kept in a prone position rather than being placed face-up. For this reason, if the first waist body portion 1A is arranged in such a manner as to cover the back side in the normal condition as shown in fig. 1A (hereinafter, also referred to as "front-back normal wear"), it is necessary to insert hands under the abdominal region of a low-weight infant in the prone position in order to lock or separate the plurality of fastening tapes 40, thus making wearing difficult. In view of this, there is a case where the first waist portion 1A is disposed so as to cover the abdomen side (hereinafter, also referred to as "front-back reverse wearing").

In addition, when the diaper 1 is normally worn front and back while the wearer faces upward, the fastening tapes 40 are pulled in a state where the portions of the three-dimensional gather portion 50 located at the first waist portion 1A are sandwiched and fixed between the back of the wearer and the floor.

In contrast, when the diaper 1 is normally worn in the front and rear direction on a low-weight infant in the prone position (fig. 1A), the first waist portion 1A is positioned on the upper side. In addition, when the diaper 1 is worn in the front-back direction on a low-weight infant in the flexed prone position (fig. 1B), a space exists between the abdominal region and the floor. For this reason, the pieces of fastening tape 40 are pulled with the portion of the three-dimensional gather portion 50 located at the first waist portion 1A not in a fixed state.

When the pieces of fastener tape 40 are pulled outward in the width direction to wear the diaper 1, a large amount of force acting outward in the width direction is applied to the portion of the first waist body portion 1A that overlaps with the pieces of fastener tape 40 in the length direction.

In view of this, in the case of the diaper 1 of the present embodiment, as shown in fig. 4, considering the first base end 52 located on one side (the fastening tape 40 side), the other side end 52a in the longitudinal direction of the first base end 52 is arranged at the same longitudinal direction position as the other side end 40a in the longitudinal direction of the fastening tape 40. Specifically, these first base end portions 52 extend from one side end 1b in the longitudinal direction of the diaper 1 to the same longitudinal position as the other side end 40a in the longitudinal direction of the plural pieces of fastening tapes 40. The first base end portion 52 extends over the entire length over which the plurality of fastening tapes 40 are provided. In other words, the first base end portion 52 is provided in the following region: at this region, a strong force acts when pulling the plural pieces of fastening tapes 40, and the three-dimensional gather portion 50 (side sheet 6) is fixed to the front face sheet 3.

For this reason, even in the case where the fastening tapes 40 are pulled while the portion of the three-dimensional gather portion 50 located in the first waist body portion 1A is not fixed between the wearer and the floor as in the case of wearing the diaper 1 on a low-weight infant, it is possible to prevent the three-dimensional gather portion 50 (side sheet 6) from expanding outward in the width direction and standing up at an unnecessary position outside the crotch portion 1B. Therefore, this suppresses leakage of excrement due to unnecessary expansion of the three-dimensional gather portion 50, and prevents formation of a gap caused by unnecessary standing of the three-dimensional gather portion 50, thereby suppressing leakage of excrement.

Note that, in both the case of normal wearing in the front and back (fig. 1A) and the case of reverse wearing in the front and back (fig. 1B), unnecessary expansion and standing of the three-dimensional gather portion 50 can be prevented, and leakage of excrement can be suppressed. Therefore, it can be said that the diaper 1 of the present embodiment can be put on in any of the front and rear orientations.

In addition, the following configuration is possible: as in the diaper 1 according to the modification shown in fig. 7, the other side end 52a of the first base end portion 52 in the longitudinal direction, which is located on one side (the fastening tape 40 side), is located on the other side with respect to the other side end 40a of the plurality of fastening tapes 40. The same effect is obtained in this case as well.

In addition, although the multi-piece fastening band 40 of the present embodiment is approximately rectangular, it is not limited thereto, and the multi-piece fastening band 40 may be trapezoidal or the like.

Further, in each piece fastening tape 40, the portion fixed to the side flap 20 (the portion 43 surrounded by the broken line in fig. 2) and the portion extending from the side flap 20 may have different lengths in the longitudinal direction.

In these cases, whether or not extending from the side flap 20, it is preferable that the other side end 40a of the fastening tape 40 farthest on the other side is located at the same position as the other side end 52a of the first base end portion 52 in the longitudinal direction, or it is preferable that the other side end 52a of the first base end portion 52 is located on the other side with respect to the other side end 40a of the fastening tape 40 farthest on the other side.

Further, in the diaper 1, the extension magnification of the elastic member 51 for the three-dimensional gather portion 50 is set to a relatively low value in the range of 1.5 to 2.0 (including 1.5 and 2.0). Preferably, it is set to about 1.50 to 1.85. Note that the elongation ratio is the degree of elongation with respect to the natural length of the elastic member whose value is 1, and the elongation ratio represents the stretchability of the elastic member 51. For example, in the case where the elastic member is fixed to a sheet or the like while being stretched to a length 1.9 times the natural length, the stretch ratio of the elastic member is 1.9.

Similarly, the extension magnification of the leg-surrounding elastic member 7 is also preferably set in the range of 1.5 to 2.0 (including 1.5 and 2.0). Preferably, it is set to about 1.60 to 1.95. Note that in the case where a plurality of leg hole elastic members 7 are provided, the leg hole elastic members 7 may have different extension ratios, in which case the extension ratio of at least one leg hole elastic member 7 is preferably set in the range of 1.5 to 2.0 (including 1.5 and 2.0).

If the stretch ratio of the elastic member 51 for the three-dimensional gather portion 50 is set to be less than 1.5, the standing portion 54 of the three-dimensional gather portion 50 is less likely to stand up toward the skin side. For this reason, since the extension ratio of the elastic member 51 is set to 1.5 or more, the three-dimensional gather portion 50 can be made to function as a leakage preventing wall, so that the lateral leakage of excrement can be suppressed.

Similarly, if the extension ratio of the leg-surrounding elastic members 7 is set to less than 1.5, the diaper 1 is not easily fitted around the legs of the wearer. For this reason, the diaper 1 is fitted around the leg of the wearer due to the extension ratio of the leg elastic members 51 being set to 1.5 or more, and leakage of excrement can be suppressed.

In addition, if the extension ratios of the elastic members 51 and the leg-surrounding elastic members 7 are set to be greater than 2.0, the contraction of the elastic members 51 and the contraction of the leg-surrounding elastic members 7 tend to bend the skin-side surface of the diaper 1 in a natural state inward in the longitudinal direction, thus becoming folded at the fold-over position P (fig. 5A) for use during packaging. For this reason, the diaper 1 is easily maintained in a state of being developed in the longitudinal direction (e.g., the state shown in fig. 2 and 5A) when in a natural state due to setting the extension magnification of the elastic member 51 and the extension magnification of the leg-surrounding elastic member 7 to 2.0 or less.

When the diaper 1 is worn on a low-weight infant, the low-weight infant maintains a prone position from the viewpoint of "minimum handling", and the diaper 1 is unfolded in the longitudinal direction and passed between the legs of the low-weight infant from the hip side (back side) toward the abdomen side. For this reason, if the diaper 1 is maintained in a state of being unfolded in the longitudinal direction while being in a natural state, the diaper 1 can be smoothly passed between the legs of a low-weight infant, and the diaper 1 can be easily put on.

Note that the stretch magnification of the elastic member 51 for the three-dimensional gather portion 50 is preferably lower than that of the leg-surrounding elastic member 7. According to this configuration, when the diaper 1 is in a natural state, it is possible to appropriately raise the three-dimensional gather portion 50 while also preventing the three-dimensional gather portion 50 from being excessively raised, and therefore the diaper 1 is more easily maintained in a state of being developed in the longitudinal direction. In addition, due to the leg-surrounding elastic members 7, the diaper 1 can be brought into close contact with the legs of the wearer without any gap between the diaper 1 and the legs of the wearer, so that leakage of excrement can be suppressed.

For similar reasons, it is preferable that the length of the elastic member 51 for the stereoscopic gather portion 50 (the length of the effective length portion that is fixed to the sheet and exhibits stretchability) be set shorter than the length of the leg-surrounding elastic member 7 (the length of the effective length portion), as shown in fig. 2.

In addition, if the belt diaper is for an infant having a body weight of more than 3000 grams, the extension ratio of the elastic member 51 and the extension ratio of the leg-surrounding elastic member 7 are generally set to values of more than 2. Low weight infants move less than infants with large movements, such as pounding legs. For this reason, even if the extension ratios of the

elastic members

51 and 7 are reduced in the diaper 1 of the present embodiment, there is almost no risk of leakage of excrement. In addition, reducing the stretch ratio makes it possible to prevent restraint of low-weight infants and to reduce the burden on the fragile skin of low-weight infants.

In addition, there is a more suitable leg flexion angle when the low weight infant is in a unique flexion position. Specifically, as shown in fig. 5C, there is a suitable angle for a line La connecting the knees of the low weight infant and the crotch of the low weight infant. A caregiver or the like determines whether the leg flexion angle is appropriate based on a line connecting the knees of the low weight infant and the crotch of the low weight infant, which is presumed from above the diaper 1.

As shown in fig. 5C, in the case of the diaper 1' according to the comparative example in which the extension ratio of the elastic member 51 and the extension ratio of the leg-surrounding elastic member 7 are set to be greater than 2.0, the diaper 1 is easily put on in a folded state at the fold-back position P used during packaging, and a space is easily formed between the crotch region of the wearer and the diaper 1. In this case, a caregiver or the like determines that the double-folded position P corresponds to the crotch of the wearer, and determines the leg buckling angle based on the error line Lb.

For this reason, if the stretch ratio of the elastic member 51 and the leg-surrounding elastic members 7 are set to 2.0 or less as in the diaper 1 of the present embodiment, the influence of the double-fold position P can be reduced when the diaper 1 is worn, and the diaper 1 is easily worn in a manner to fit the body of the wearer. Therefore, the caregiver or the like can accurately determine the leg flexion angle from above the diaper 1.

Note that it is sufficient to measure the extension ratio of the elastic member using a known method (examples of which are described below). First, when the diaper 1 is in a natural state, what is measured is a length H0 in the longitudinal direction of an effective length portion (i.e., a portion fixed to a sheet in an elongated state) of the elastic member to be measured, which exhibits stretchability. Next, the diaper 1 is extended to the maximum length direction length to such an extent that the wrinkles formed in the diaper 1 can no longer be seen, and the length H1 in the length direction of the effective length portion of the elastic member is measured in this state. Then, the elongation of the elastic member was calculated using the formula "elongation H1/H0".

As shown in fig. 4, in the diaper 1 of the present embodiment, the first base end 52 located on one side in the longitudinal direction reaches the absorbent body 2, and the first base end 52 located on the other side in the longitudinal direction also reaches the absorbent body 2. The portion of the diaper 1 formed of the sheet positioned outward in the longitudinal direction with respect to the absorbent body 2 is less rigid than the portion where the absorbent body 2 is provided. For this reason, as shown in fig. 4, it is sufficient to increase the rigidity by forming the first base end portions 52 so as to extend over the entire longitudinal direction range of the portion where the absorbent body 2 is not provided.

According to this configuration, when the low-weight infant is in the prone position and the diaper 1 is passed between the legs of the low-weight infant in order to put on the diaper 1, the portion located on the outer side in the longitudinal direction with respect to the absorbent body 2 is not easily folded, so that the diaper 1 can be smoothly passed through, and the diaper 1 is relatively easily put on.

As shown in fig. 6A, each of the side flaps 20 to which the plurality of fastening tapes 40 are fixed includes: a wide portion 21 in which a length (L2) of the side flap 20 in the width direction is largest among the wide portion 21; the other side end 22 of the side flap 20 farthest to the other side (inner side) in the longitudinal direction, that is, the "base point 22". One piece of fastening tape 40 extends outward in the width direction from the wide portion 21. Note that the base point 22 is the narrowest point of the width of the diaper 1. Specifically, the base point is a boundary point as follows: at this boundary point, the tangent to the widthwise side edge 1a of the diaper 1 changes from being inclined inward in the widthwise direction toward the other side in the lengthwise direction to extending along the lengthwise direction or being inclined in the opposite direction.

Further, as shown in fig. 6A, the diaper 1 has an imaginary line Lc connecting the other side base point 22 of the side flap 20 and the other side end 23 of the wide portion 21 farthest on the other side. The imaginary line Lc is inclined inward in the width direction toward the other side in the length direction. In the diaper 1 of the present embodiment, in the rectangular area a having the imaginary line Lc as a diagonal line, the area where the side flap 20 is present (hatched area) is smaller than the area where the side flap 20 is not present.

Specifically, the lateral side edges 24 of the side flaps 20 are recessed inward of the imaginary line Lc. In other words, the lateral side edges 24 of the side flaps 20 are bent in such a manner as to project toward the side flaps (side D1 of fig. 6A) in the direction orthogonal to the imaginary line Lc, thus forming wider leg openings. For this reason, a low-weight infant can more easily adopt a flexed posture in which the leg is greatly flexed, thereby improving comfort. This also prevents the following: when in the flexed posture, the side flap 20 is pulled toward the non-skin side by the leg of the low-weight infant, and thus leakage of excrement from the leg region can be suppressed.

The area of the side flap 20 of the present embodiment is smaller than the area of the side flap that is curved so as to protrude away from the side D1 in fig. 6A, for example. For this reason, when the low-weight infant is in the prone position and the diaper 1 is passed between the legs of the low-weight infant in order to put on the diaper 1, the side flaps 20 are less likely to be caught by the legs. Therefore, the diaper 1 can be smoothly passed through and easily put on. It is also possible to prevent the diaper 1 from being put on in a state where the side flaps 20 are caught at the legs and caught there. In other words, the diaper 1 can be passed between the legs to a position that reliably covers the abdominal region of a low-weight infant, and the diaper 1 is passed on the low-weight infant at an appropriate position, so that leakage of excrement can be suppressed.

Further, in each side flap 20 of the present embodiment, the length L3 in the longitudinal direction of the wide portion 21 of the diaper 1 is less than 2 times the length L4 in the longitudinal direction of one fastening tape 40 (L3 < 2 × L4). In other words, the length of the wide portion 21 is prevented from being unnecessarily long with respect to one piece of the fastening tape 40 extending from the wide portion 21, and the area of the side flap 20 is set to be as small as possible. Thus, the side flaps 20 are less likely to get caught when the diaper 1 is passed between the legs of a low-weight infant. Therefore, the diaper 1 can be smoothly passed through, and the diaper 1 can be passed through between the legs to a position where it surely covers the abdominal region of a low-weight infant.

Note that there are cases where: the width (length in the longitudinal direction of the diaper 1) L4 of one fastener tape 40 is not constant. In this case, it is preferable that the length L3 of the wide portion 21 in the longitudinal direction of the diaper 1 be less than 2 times the maximum length of the portion of one fastener tape 40 extending from the side flap 20, or less than 2 times the length of the base portion (widthwise inner end) of one fastener tape 40. It should be noted that there is no limitation to this, and the following configuration is possible: for example, the length L3 of the wide portion 21 is less than 2 times the minimum length of the portion of the one piece of fastening tape 40 extending from the side flap 20, or less than 2 times the length of the portion of the one piece of fastening tape 40 fixed to the side flap 20.

Further, the fastening tapes 40 are portions to be touched by the wearer's fingers, and therefore are members having rigidity and hardness higher than other members of the diaper 1. For this reason, it is preferable that the lengthwise direction central position CL1 of each of the plural pieces of fastening tape 40 of the diaper 1 is located on the other side (inner side) in the lengthwise direction with respect to the central position CL2 of the wide portion 21 as shown in fig. 6B, or the central position CL1 of one piece of fastening tape 40 and the central position CL2 of the wide portion 21 coincide with each other as shown in fig. 7.

According to this configuration, with respect to the longitudinal direction, the length L5 from the one side end 25 of the wide portion 21 to the one side end 40b of the one piece of fastening tape 40 is greater than or equal to the length L6 from the other side end 40a of the one piece of fastening tape 40 to the other side end 23 of the wide portion 21. Therefore, when the diaper 1 is worn back and forth (fig. 1B), the diaper 1 is passed between the legs of a low-weight infant in such a manner that the fastening tape 40 side is positioned on the ventral side, for example, the sheet portion passed before the plural fastening tapes 40 is folded and wrapped around the plural fastening tapes 40. This makes it difficult for a relatively stiff one piece fastening strip 40 to be directly caught on the skin of a low weight infant. Therefore, the burden on the skin of a low-weight infant can be reduced.

In addition, in the diaper 1, one side end 40b in the longitudinal direction of one fastening tape 40 and the end 2a in the longitudinal direction of the absorber 2 have different rigidities, and thus contribute to folding. In view of this, it is desirable that, as shown in fig. 4, the position of one side end 40b of one fastening tape 40 which is farthest on one side in the longitudinal direction and the position of one side end 2a of the absorbent body 2 which is farthest on the one side coincide with each other.

According to this configuration, when the diaper 1 is passed between the legs of a low-weight infant with the multiple fastening tapes 40 side on the ventral side, it is possible to prevent the diaper 1 from wrinkling at folding points (the ends of the multiple fastening tapes 40 and the ends of the absorber 2) that are staggered in the longitudinal direction. Therefore, the diaper 1 can be smoothly passed through, and the diaper 1 can be put on more easily.

As described above, in the diaper 1 of the present embodiment, when further considering the case where the diaper 1 is worn between the legs of a low-weight infant and the fastening tape 40 side is positioned on the abdomen side (i.e., worn in the front-back direction), innovation is made. Therefore, it can be said that the diaper 1 of the present embodiment can be worn in either of the front-back orientations.

In addition, as shown in fig. 2, the diaper 1 has a tear line 60 for separating at least the following: a portion (i.e., a dotted line portion 43) where each of the plurality of pieces of fastening tape 40 is fixed to the first waist body portion 1A. The diaper 1 has two pieces of fastening tape 40 and thus also two easy tear lines 60.

As shown in fig. 6B, the easy-tear line 60 of the present embodiment is formed of a perforation, more specifically, a hole 61 that penetrates completely or incompletely in the thickness direction and is disposed intermittently. It should be noted that there is no limitation to this, and for example, it is sufficient that the easy-tear lines 60 may be formed by continuous groove-like recesses, and that a part of the diaper 1 can be easily separated from the main body portion along each easy-tear line 60.

In addition, each of the easy-tear lines 60 of the present embodiment extends from one side end 1b in the longitudinal direction of the diaper 1 (i.e., a portion that forms a waistline opening when worn), passes through a position that is located inward in the width direction with respect to the fixed portion 43 of one fastening tape 40, and extends toward the side end 1a in the width direction of the diaper 1 (i.e., a portion that forms a leg opening when worn). Specifically, the easy-tear line 60 has a straight portion extending in the longitudinal direction from one side end 1b of the diaper 1 in the longitudinal direction and a curved portion curved from the straight portion toward the side end 1a of the diaper 1 in the width direction. It should be noted that the shape of the tear line 60 is not limited to the shape shown in the drawings, and may be any shape as long as the fixing portion 43 of one piece of the fastening tape 40 can be separated.

Due to the diaper 1 having the easy-tear line 60, for example, in the case of normal front and back wearing (fig. 1A), the fixing portion 43 can be separated at the easy-tear line 60, instead of placing the hand under the abdominal region of a low-weight infant and unfastening the plurality of fastening tapes 40. Therefore, in a state where the plural pieces of fastening tape 40 (hook members 42) are locked to the second waist portion 1C, the first waist portion 1A and the second waist portion 1C are disconnected, and the diaper 1 is unfolded in the longitudinal direction. Finally, the diaper 1 is easily removed from the wearer by pulling the diaper 1 out from between the legs of a low-weight infant.

In addition, in the case of wearing in the front-back reverse direction (fig. 1B), by separating the fixing portion 43 at the easy-tear line 60, the diaper 1 is unfolded in the longitudinal direction in a state where the plural fastening tapes 40 are locked to the second waist body portion 1C located on the back side. Therefore, the diaper 1 can be pulled away without the first waist portion 1A having the hard pieces of the fastening tapes 40 passing between the legs of the low-weight infant, and thus the burden on the skin of the low-weight infant can be reduced.

In addition, as shown in fig. 6B, one end 62 of the easy-tear line 60 (the end 62 extending toward the lateral end 1a of the diaper 1 in the width direction) is located farther on the other side than the other lateral end 22 of the side flap 20 farthest on the other side in the longitudinal direction (i.e., the base point 22 of the side flap 20). Since the force tends to concentrate at the base point 22 of the side flap 20, it is preferable that the base point 22 of the side flap 20 and the one end 62 of the tear line 60 are arranged to be offset from each other in the longitudinal direction.

According to this configuration, for example, when a plurality of pieces of the fastening tape 40 are pulled outward in the width direction in order to put on the diaper 1, it is possible to prevent the unintentional tearing of the easy-tear line 60 starting at the end 62 of the easy-tear line 60. In addition, when the diaper 1 is passed through the leg of a low-weight infant with the fastening tape 40 side on the abdomen side, even if the side flap 20 gets caught on the leg or the like of the low-weight infant, accidental tearing of the easy-tear line 60 can be prevented.

Further, as shown in fig. 6B, it is preferable that the hole 61 of the easy-tear line 60 is located inward in the width direction with respect to the side end 1a of the diaper 1 in the width direction. If the hole 61 of the easy-tear line 60 reaches the side end 1a of the diaper 1, a notch will be formed in the side end 1a, and the easy-tear line 60 will easily start tearing at the hole 61 located at the side end 1 a. In view of this, by configuring the hole 61 as described above, accidental tearing of the easy-tear line 60 can be prevented.

In addition, as shown in fig. 6B, it is preferable that the easy-tear line 60 and the leg-surrounding elastic members 7 intersect with each other when the diaper 1 is viewed in the thickness direction. According to this configuration, even if the easy-tear line 60 starts to be torn accidentally at the end 62 of the easy-tear line 60, the progress of tearing of the easy-tear line 60 can be suppressed by the leg-surrounding elastic member 7.

Note that the tear line 60 may be omitted from the diaper 1.

As shown in fig. 2, the absorbent body 2 has a first folding guide 71 extending in the width direction in the central portion (central position CL region) in the longitudinal direction. The absorbent body 2 also has a second folding guide portion 72 extending in the width direction with respect to the other side of the first folding guide portion 71 in the longitudinal direction. The first folding guide portion 71 and the second folding guide portion 72 are portions that guide the absorbent body 2 so as to fold the absorbent body 2 in the width direction (or substantially the width direction) at a position in the longitudinal direction.

The first folded guide portion 71 is formed by providing a pair of notch portions 71a in both side portions in the width direction of the absorbent core 2A. In the notch portion 71a, the constituent member (liquid absorbent fiber) of the absorbent core 2A has a lower basis weight than the surrounding area, or the constituent member of the absorbent core 2A is absent. The pair of notches 71a are provided at the same position in the longitudinal direction. Therefore, the absorbent body 2 is relatively easily folded in the width direction in the first folding guide 71 due to the difference in rigidity from the surrounding area.

Similarly, the second fold guide portions 72 are formed by providing a pair of notch portions 72A in both side portions in the width direction of the absorbent core 2A. Note that although the notched

portions

71a and 72a are mountain-shaped and protrude inward in the width direction in the present embodiment, there is no limitation to this, and the notched

portions

71a and 72a may have, for example, a rectangular shape.

Due to the fact that the absorbent body 2 has the first fold guide portion 71 and the second fold guide portion 72, the absorbent body 2 is more easily fitted to the wearer in the case of normal front and back wear (fig. 1A). Specifically, the portion of the absorbent body 2 between the first fold guide 71 and the second fold guide 72 (i.e., the portion on the other side with respect to the center position CL) becomes the bottom and comes into contact with the crotch of the wearer in the flexed posture, and further, the portions of the absorbent body 2 on the front side and the rear side of the aforementioned portions stand up so as to come into contact with the abdomen and the back of the wearer.

Due to the fact that the absorbent body 2 is attached to the wearer in this manner, it is possible to prevent the formation of a gap and suppress the leakage of excrement. In addition, since the absorber 2 is easily attached to the low-weight infant in the flexed posture, the absorber 2 having high rigidity can be prevented from being pressed against the low-weight infant, and thus the burden on the low-weight infant can be reduced. It should be noted that there is no limitation to this, and for example, a configuration is possible in which the second folding guide portion 72 is omitted from the absorbent body 2, and a configuration is possible in which the first folding guide portion 71 and the second folding guide portion 72 are omitted from the absorbent body 2.

In addition, the first fold guide portion 71 and the second fold guide portion 72 are formed by providing the cutaway portions 71a and 72A in the absorbent core 2A in the present embodiment, but there is no limitation thereto. For example, the first and second folded

guide portions

71 and 72 may be formed by, for example: the absorbent core 2A is formed in a compressed portion (embossed portion) in which it is compressed in the thickness direction, the absorbent core 2 is subjected to a treatment to fold the absorbent core 2 in the width direction during the manufacturing process, the basis weight of the constituent members of the absorbent core is reduced in the width direction, a slit extending in the width direction is formed in a central portion in the width direction of the absorbent core 2, or a slit extending in the width direction is formed in both end portions in the width direction of the absorbent core 2. In addition, a double folding position P (fig. 5A) used during packaging may be used as the first folding guide 71.

Although the embodiments of the present invention have been described above, the above embodiments are for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the present invention. Further, changes and modifications may be made to the present invention without departing from the spirit thereof, and it is needless to say that the present invention covers equivalents thereof. For example, variations such as the following are possible.

Description of the reference numerals

Diaper 1 (Belt type diaper)

1A a first waist part, 1B crotch part, 1C second waist part,

2 absorbent body, 2A absorbent core, 2B core wrapping sheet,

3 front surface pieces, 4 leakproof pieces, 5 outer pieces,

6 side pieces, 7 leg elastic members,

20 side fins, 21 wide portion, 30 side fins,

40 fastening tapes, 41 tape base members, 42 hook members,

50 a three-dimensional gather portion, 51 an elastic member, 52a first proximal end portion (proximal end portion),

53 second base end portion, 54 rising portion,

60 easy-to-tear lines, 61 holes,

71a first folding guide part, 71a notch part, 72a second folding guide part,

72a notch, Lc imaginary line, A rectangular region

Claims

1. A belt diaper for a low-weight infant,

the belt diaper can be worn in either of two front-to-back orientations,

the belt diaper comprises:

a fastening belt is fixed on the side wing pieces; and

the three-dimensional gather portion includes:

a pair of first base end portions,

which are located at both ends in the longitudinal direction and

cannot stand in the thickness direction;

a second base end portion of the catheter,

which extends over the entire range of the belt diaper in the longitudinal direction at a position outside the first base end portion in the width direction, and

cannot stand in the thickness direction; and

a rising part is arranged at the bottom of the water tank,

which is located between the pair of first base end parts and

a position of the other side end of the first base end portion on the one side is located at any one of the following positions in the longitudinal direction:

a position identical to that of the other side end of the fastening band; or

the elastic member has an elongation ratio of 1.5 to 2.0,

2. The belt diaper according to claim 1,

the stretch ratio of the leg elastic member is 1.5 to 2.0.

3. The belt diaper according to claim 1 or 2,

the belt diaper has an imaginary line at the side flaps,

the imaginary line connecting

4. The belt diaper according to claim 3,

in the case of the side flap panel,

5. The belt diaper according to claim 1,

6. The belt diaper according to claim 5,

7. The belt diaper according to claim 1,

the belt diaper further comprises an absorbent body, and

for the fastening tape, in the longitudinal direction,

8. The belt diaper according to claim 1,

the belt diaper further comprises an absorbent body, and

the first folding guide portion extends in the width direction,

the second fold guide portion extends in the width direction.