JP7393992B2 - Pants type disposable diaper - Google Patents

Description

The present invention relates to a pants-type disposable diaper.

It is known that a pants-type disposable diaper is provided with a plurality of elastic members in order to improve the fit of the wearer (see, for example, Patent Document 1).

Patent Document 1 discloses a configuration in which a plurality of first elastic members and a plurality of second elastic members extending in the width direction of the pants-type disposable diaper are arranged in the pants-type disposable diaper. This allows the absorbent main body to easily adhere to the wearer's body while ensuring followability of the exterior body to accommodate the wearer's various movements.

Patent No. 6221839

However, in Patent Document 1, one end and the other end of an elastic member formed in a pants-type disposable diaper are located at substantially the same position in the vertical direction. Therefore, the pants-type disposable diaper described in Patent Document 1 has a problem in that the pants-type disposable diaper cannot be easily attached to an appropriate position with one hand.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pants-type disposable diaper that can be easily attached to an appropriate position even with one hand.

In order to achieve the above object, the pants-type disposable diaper of the present invention is a pants-type disposable diaper having a ventral part and a dorsal part, the pants-type disposable diaper having the ventral part and the dorsal part, and having legs. An exterior body forming a pair of leg circumference parts surrounding the body and a waist part surrounding the torso, and an absorbent body disposed closer to the body than the exterior body and formed in a sheet shape from the ventral side to the dorsal side. , the exterior body includes a telescopic member extending from the leg portion diagonally upward to the waist portion on at least one of the ventral side portion and the dorsal side portion; a first elastic member extending from the upper part of the leg part to the torso part above the other leg part; A second elastic member extends around the waist.

The pants-type disposable diaper of the present invention configured as described above can be easily worn in an appropriate position even with one hand.

FIG. 2 is a perspective view showing a state in which the pants-type disposable diaper of Example 1 is worn. FIG. 2 is an exploded view showing an unfolded state of the pants-type disposable diaper of Example 1. 1 is a side view showing the pants-type disposable diaper of Example 1. FIG. FIG. 3 is a diagram illustrating the effect of the pants-type disposable diaper of Example 1. FIG. 3 is a developed view showing the unfolded state of the pants-type disposable diaper of Example 2. FIG. 3 is a diagram illustrating the effect of the pants-type disposable diaper of Example 2. FIG. 7 is a developed view showing the unfolded state of the pants-type disposable diaper of Example 3. FIG. 7 is an exploded view showing an unfolded state of a pants-type disposable diaper according to another example. FIG. 7 is an exploded view showing an unfolded state of a pants-type disposable diaper according to another example. FIG. 7 is an exploded view showing an unfolded state of a pants-type disposable diaper according to another example.

Embodiments for realizing a pants-type disposable diaper according to the present invention will be described below based on Examples 1 to 3 shown in the drawings.

The pants-type disposable diaper in Example 1 is applied to a pants-type disposable diaper for adults.

[Configuration of pants-type disposable diaper]
FIG. 1 is a perspective view showing a state in which the pants-type disposable diaper of Example 1 is worn. FIG. 2 is a developed view showing the unfolded state of the pants-type disposable diaper of Example 1. FIG. 3 is a side view showing the pants-type disposable diaper of Example 1. The structure of the pants-type disposable diaper of Example 1 will be described below. Note that the waist portion of the pants-type disposable diaper 1 is referred to as a waist portion B, and the leg portion is referred to as a leg portion G.

As shown in FIG. 1, the waist portion B is the upper end of the pants-type disposable diaper 1 worn by the wearer P, and is the range that can be grasped by a person's hands. The leg portion G is a portion around the legs of the wearer P of the pants-type disposable diaper 1 worn by the wearer P.

As shown in FIGS. 1 and 2, the pants-type disposable diaper 1 is composed of a ventral part F and a dorsal part R, and is designed to cover the wearer's P from the abdomen to the crotch and back. It is formed.

As shown in FIG. 2, the pants-type disposable diaper 1 includes an outer body 20 and an inner body 10 disposed closer to the body than the outer body 20.

(Interior body)
As shown in FIG. 2, the interior body 10 includes a top sheet 11 placed on the body side, a back sheet 12 placed on the clothing side, and an absorbent body interposed between the top sheet 11 and the back sheet 12. 15.

As the top sheet 11, for example, a liquid-permeable sheet made of a perforated or non-perforated nonwoven fabric can be used. The top sheet 11 allows body fluids to quickly pass toward the absorbent body 15.

For the back sheet 12, for example, a liquid-impermeable sheet made of a resin film can be used. The backsheet 12 prevents body fluids held by the absorbent body 15 from permeating through the backsheet 12 and wetting clothes and the like.

The absorbent body 15 includes an absorbent polymer and pulp. The absorbent body 15 is formed in a sheet shape from the ventral side to the dorsal side. The absorbent body 15 may have a single layer or multiple layers.

By fixing the peripheral edges of the top sheet 11 and back sheet 12 with an adhesive such as hot melt, welding, etc., with the absorbent body 15 interposed between the top sheet 11 and the back sheet 12, the interior body 10 is It is formed. Note that three-dimensional gathers that fit around the legs may be formed on both sides of the interior body 10.

(exterior body)
As shown in FIG. 2, the exterior body 20 includes an exterior top sheet 21, an exterior back sheet 22, a waist elastic member 25 arranged around the waist, a leg elastic member 26 arranged around the legs, and an elastic member. It consists of 30.

The exterior top sheet 21 is arranged closer to the body than the exterior back sheet 22, and may be made of, for example, a nonwoven fabric. The exterior backsheet 22 is disposed closer to the clothing side than the exterior topsheet 21, and may be made of, for example, a nonwoven fabric.

A plurality of waist elastic members 25 (three in the first embodiment) are arranged around the waist so as to extend in the horizontal direction. That is, the waist elastic members 25 are arranged around the waist of the abdominal part F and around the waist of the back part R. The waist elastic member 25 can be made of, for example, thread-like or band-like natural rubber. Note that the waist elastic member 25 may be arranged not only around the waist but also around the abdomen.

A plurality of (two in Example 1) leg circumference elastic members 26 are arranged around the leg. That is, the leg stretchable members 26 are arranged around the legs of the ventral part F and around the legs of the dorsal part R. The leg elastic member 26 can be made of, for example, thread-like or band-like natural rubber.

(Extensible member)
The elastic member 30 includes a first elastic member 31 and a second elastic member 32. The first elastic member 31 and the second elastic member 32 are formed in the abdominal part F and the back part R, respectively.

The first elastic member 31 can be made of, for example, thread-like or band-like natural rubber. When using a rubber thread for the first elastic member 31, the thickness of the rubber thread is preferably 620 dtex or more, more preferably 940 dtex or more. A plurality of first elastic members 31 (three in the first embodiment) are arranged at equal intervals so as to extend from one leg part G1 to the upper trunk part B of the other leg part G2. be done. The first elastic member 31 is formed in a wavy shape like a half-period sine wave. That is, the first elastic member 31 is arranged so as to extend diagonally upward from the leg section G to the waist section B.

The first elastic member 31 can have a higher elastic stress than the waist elastic member 25. Stretching stress is the strength when a member is stretched the same distance, and high stretching stress means that the stress required to stretch the member the same distance is high.

The second elastic member 32 can be made of, for example, thread-like or band-like natural rubber. When using a rubber thread for the second elastic member 32, the thickness of the rubber thread is preferably 620 dtex or more, more preferably 940 dtex or more. A plurality of second elastic members 32 (three in the first embodiment) are arranged at equal intervals so as to extend from the other leg part G2 to the waist part B above the one leg part G1. . The second elastic member 32 is formed in a wavy shape like a half-period sine wave. That is, the second telescopic member 32 is arranged to extend diagonally upward from the leg section G to the waist section B.

The second elastic member 32 can have substantially the same elastic stress as the first elastic member 31, and can have a higher elastic stress than the waist elastic member 25.

The intersection 21a where the first elastic member 31 and the second elastic member 32 intersect is formed to have higher rigidity than other parts. The intersection portion 21a may be formed by laminating a rigid nonwoven fabric on the exterior top sheet 21 and the exterior back sheet 22.

As shown in FIG. 3, the elastic stress of the first elastic member 31 and the second elastic member 32 arranged in the dorsal part R is the same as that of the first elastic member 31 and the second elastic member 32 arranged in the ventral part F. It is formed to be higher. That is, the elastic stress of the elastic member 30 is set higher in the dorsal part R than in the ventral part F.

The interior body 10 configured in this manner is attached to the inner surface of the exterior body 20 with an adhesive. Then, with the ventral part F folded back toward the dorsal part R, the circumference in the width direction of the exterior body 20 of the ventral part F and the circumference in the width direction of the exterior body 20 of the dorsal part R are overlapped. By combining and joining them, a pants-type disposable diaper 1 is formed.

[Effects of pants-type disposable diapers]
FIG. 4 is a diagram illustrating the operation of the pants-type disposable diaper of Example 1. Hereinafter, the operation of the pants-type disposable diaper 1 of Example 1 will be explained.

The pants-type disposable diaper 1 of Example 1 is a pants-type disposable diaper 1 having a ventral part F and a dorsal part R, and at least one of the ventral part F and the dorsal part R has a part around the legs. The telescopic member 30 extends diagonally upward from the encircling leg part G to the waist part B surrounding the torso, and the telescopic member 30 extends from one leg part G1 to the upper part of the other leg part G2 A first elastic member 31 extends from the other leg area G2 to the waist area B above the one leg area G1. 2).

As a result, as shown in FIG. 4, when the upper torso part B of one leg part G1 is pulled upward, the other leg part G2 can be pulled upward by the elastic force of the second elastic member 32. I can do it. Furthermore, when the upper body part B of the other leg part G2 is pulled upward, the elastic force of the first elastic member 31 can pull the one leg part G1 upward. As a result, the pants-type disposable diaper 1 can be easily worn in an appropriate position even with one hand.

In the pants-type disposable diaper 1 of Example 1, the rigidity of the intersection 21a where the first elastic member 31 and the second elastic member 32 intersect is higher than other parts (FIG. 2).

Thereby, it is possible to prevent the absorbent body 15 from being deformed due to a strong elastic force being generated at the intersection 21a of the first elastic member 31 and the second elastic member 32. Therefore, the absorbent core 15 can be maintained in a proper posture and absorbent performance can be maintained.

In the pants-type disposable diaper 1 of Example 1, the elastic stress of the elastic members (first elastic member 31, second elastic member 32) is formed higher in the back side part R than in the abdominal part F (FIG. 3 ).

As a result, when the waist portion B of the pants-type disposable diaper 1 is pulled upward, the elastic members (first elastic member 31, second elastic member 32) on the back side with strong elastic stress can overcome the protrusion of the buttocks. It can be pulled up like this. Therefore, when the user puts on the pants-type disposable diaper 1, the back side portion R can be prevented from getting caught on the protrusion of the buttocks. Therefore, the pants-type disposable diaper 1 can be easily worn.

In the pants-type disposable diaper 1 of Example 1, the elastic stress of the elastic members (first elastic member 31, second elastic member 32) is set higher than that of the waist elastic member 25 disposed around the waist.

Thereby, even if the body is influenced by the waist elastic member 25, the diagonally upward elastic force of the elastic members (first elastic member 31, second elastic member 32) can be ensured. Therefore, even if affected by the waist elastic member 25, the leg portion G can be pulled upward by the elastic force of the elastic members (first elastic member 31, second elastic member 32).

The pants-type disposable diaper of Example 2 differs from the pants-type disposable diaper of the above embodiment in that the structure of the elastic member is different.

[Configuration of pants-type disposable diaper]
FIG. 5 is a developed view showing the unfolded state of the pants-type disposable diaper of Example 2. The structure of the pants-type disposable diaper of Example 2 will be explained below. Note that parts that are the same or equivalent to those described in the above embodiments will be described using the same terms or the same symbols.

As shown in FIG. 5, the third elastic member 131 as the elastic member 30 extends from one leg portion G1 toward the center of the waist portion B in the width direction. It is arranged so as to extend from the center part toward the other leg part G2. In other words, the third elastic member 131 is disposed so as to extend from the leg portions G1 and G2 toward the center portion of the waist portion B in the width direction. The third elastic member 131 is formed in a wave shape like a sine wave with one cycle. That is, the third telescopic member 131 is arranged to extend obliquely upward from the leg section G to the waist section B.

[Effects of pants-type disposable diapers]
FIG. 6 is a diagram illustrating the operation of the pants-type disposable diaper of Example 2. Hereinafter, the operation of the pants-type disposable diaper 1 of Example 2 will be explained.

In the pants-type disposable diaper 1 of Example 2, the elastic member 30 includes a third elastic member 131 that extends from the leg area G toward the center of the waist area B (FIG. 5).

Thereby, as shown in FIG. 6, when the center portion of the waist portion B is pulled upward, the leg portion G can be pulled upward by the elastic force of the third elastic member 131. Therefore, when the user puts on the pants-type disposable diaper 1, by pulling the center part of the waist part B upward, the leg part G can be pulled up and the pants-type disposable diaper 1 can be put on in an appropriate position. . As a result, the pants-type disposable diaper 1 can be easily worn in an appropriate position even with one hand.

Note that the other configurations and effects are substantially the same as those of the above embodiment, so explanations will be omitted.

The pants-type disposable diaper of Example 3 differs from the pants-type disposable diaper of the above embodiment in that the arrangement intervals of the elastic members are different.

[Configuration of pants-type disposable diaper]
FIG. 7 is a developed view showing the unfolded state of the pants-type disposable diaper of Example 3. The structure of the pants-type disposable diaper of Example 3 will be explained below. Note that parts that are the same or equivalent to those described in the above embodiments will be described using the same terms or the same symbols.

As shown in FIG. 7, the elastic member 30 includes a first elastic member 231 and a second elastic member 232.

The first elastic member 231 and the second elastic member 232 are formed such that the distance between them increases from the leg area G toward the waist area B. That is, the widths of the first elastic member 231 and the second elastic member 232 are formed to increase from the leg area G toward the waist area B.

Note that, as shown in FIG. 8, the distance between the first elastic member 231 and the second elastic member 232 may be formed to widen from the leg area G toward the waist area B.

[Effects of pants-type disposable diapers]
Hereinafter, the operation of the pants-type disposable diaper 1 of Example 3 will be explained.

In the pants-type disposable diaper 10 of Example 3, the interval between the elastic members (first elastic member 231, second elastic member 232) is formed to widen from the leg area G toward the waist area B. (Figure 7).

Thereby, even if a wide range of the waist portion B is pulled, the leg portion G can be pulled upward. Therefore, the pants-type disposable diaper 1 can be easily worn.

In the pants-type disposable diaper 10 of Example 3, the interval between the elastic members (first elastic member 231, second elastic member 232) is formed to widen from the waist area B toward the leg area G. (Figure 8).

Thereby, by pulling a portion of the waist portion B upward, a wide range of the leg portion G can be pulled upward. Therefore, the pants-type disposable diaper 1 can be easily worn.

Note that the other configurations and effects are substantially the same as those of the above embodiment, so explanations will be omitted.

The pants-type disposable diaper of the present invention has been described above based on Examples 1 to 3. However, the specific configuration is not limited to these examples, and changes in design, combinations of examples, Additions, etc. are allowed.

In the first embodiment, an example is shown in which the first elastic member 31 and the second elastic member 32 are provided as the elastic member 30. Further, in the second embodiment, an example is shown in which the third elastic member 131 is provided as the elastic member 30. However, as shown in FIG. 9, the elastic member may include a combination of the first elastic member 31 and the second elastic member 32 of the first embodiment and the third elastic member 131 of the second embodiment.

In Examples 1 to 3, one end of the elastic member 30 is formed on the outside of the leg portion G in the width direction (outer thigh side). One end of the expandable member may be formed anywhere on the leg portion. For example, as shown in FIG. 10, one end of the first elastic member 331 is formed near the center in the width direction of one leg portion G1, and one end of the second elastic member 332 is formed in the width direction of the other leg portion G2. It may be formed near the center of the direction.

In Examples 1 and 2, examples were shown in which the elastic members 30 were arranged at equal intervals. However, the intervals at which the elastic members are arranged do not have to be arranged at equal intervals. For example, among the plurality of elastic members, the upper elastic members may be arranged with wide intervals, and the lower elastic members may be arranged with narrow intervals.

In Examples 1 and 3, examples were shown in which the elastic member 30 included a first elastic member and a second elastic member. However, the elastic member may include either a first elastic member or a second elastic member.

In Examples 1 and 3, the intersection portions 21a are formed by laminating rigid nonwoven fabrics on the exterior top sheet 21 and the exterior back sheet 22. However, the intersection portion may be formed by making a part of the interior body highly rigid, or may be formed by attaching a separate member to the exterior top sheet or the exterior back sheet.

In Examples 1 to 3, examples were shown in which the expandable members 30 were arranged in a wavy manner. However, the expandable member is not limited to this embodiment, and may be arranged in a straight line, for example.

In Examples 1 to 3, examples were shown in which the elastic member was made of thread-like or band-like natural rubber. However, the stretchable member is not limited to this embodiment, and may be a stretchable film or may be formed by applying stretchable hot melt.

In Examples 1 to 3, examples were shown in which the exterior body 20 was composed of one component. However, the exterior body may be composed of two or more parts.

In Examples 1 to 3, the first elastic member 31 and the second elastic member 32 are made of thread-like or band-like natural rubber. However, the first elastic member and the second elastic member are not limited to this embodiment, and may also be formed into elastic films.

Examples 1 to 3 show examples in which the present invention is applied to pants-type disposable diapers for adults. However, the present invention can be applied to other pants-type disposable diapers, such as pants-type disposable diapers for children.

1 Pants-type disposable diaper 25 Waist elastic member 21a Intersection 30 Elastic member 31 First elastic member 32 Second elastic member 131 Third elastic member F Abdominal part R Dorsal part G Leg part B Waist part

Claims (7)

A pants-type disposable diaper having a ventral part and a dorsal part,
an exterior body having the ventral side part and the dorsal side part and forming a pair of leg circumference parts surrounding the legs and a waist circumference surrounding the torso; Equipped with an absorbent body formed in a sheet shape up to the sides,
The exterior body includes an elastic member on at least one of the ventral side part and the dorsal side part, which extends from the leg area diagonally upward to the waist area,
The elastic member is
a first elastic member extending from the upper part of one of the leg parts to the torso part above the other leg part;
A pants-type disposable diaper comprising: a second elastic member extending from the upper part of the other leg part to the waist part above one of the leg parts. The exterior body is formed such that a portion where an intersection is formed where the first elastic member and the second elastic member intersect has a higher rigidity than other portions where the intersection is not formed. The pants-type disposable diaper according to claim 1, characterized in that: The elastic member is
The pants-type disposable diaper according to claim 1 or 2, further comprising a third elastic member extending from the upper part of the leg part toward the center part of the waist part. The pants-type disposable diaper according to any one of claims 1 to 3, wherein the elastic stress of the elastic member is higher at the back side than at the ventral side. The pants-type disposable diaper according to any one of claims 1 to 4, wherein the elastic member has a higher elastic stress than the waist elastic member disposed around the waist. The pants-type disposable diaper according to any one of claims 1 to 5, wherein the distance between the elastic members is formed to widen from the leg area toward the waist area. . The pants-type disposable diaper according to any one of claims 1 to 5, wherein the distance between the elastic members is formed to widen from the waist portion toward the leg portion. .