WO2011122597A1

WO2011122597A1 - Disposable article for wearing

Info

Publication number: WO2011122597A1
Application number: PCT/JP2011/057744
Authority: WO
Inventors: 克文青木; 浩一郎三井; 将志中下; 聡光野; 浩之丹治
Original assignee: ユニ・チャーム株式会社
Priority date: 2010-03-30
Filing date: 2011-03-29
Publication date: 2011-10-06
Also published as: JP5665343B2; JP2011206390A

Abstract

Provided is a disposable article for wearing that can prevent excrement from clinging to the skin of a user. A diaper (1) comprises an inner surface sheet (10), an outer surface sheet (20), and a liquid absorbing structure (30) disposed between the inner surface sheet (10) and the outer surface sheet (20). An opening (11) is formed through the inner surface sheet (10) in the thickness direction thereof, and a passage (33) penetrates the thickness of the liquid absorbing structure (30) at a position corresponding to the opening (11) in the inner surface sheet (10). The inner surface sheet (10) and the outer surface sheet (20) are bonded to each other in a bond region (21) around the liquid absorbing structure (30) and are not bonded to each other in a containing region (22) located inside the bond region (21). Elastic spacers (40) are arranged in the containing region (22) between the outer surface sheet (20) and the liquid absorbing structure (30). Each of the spacers (40) comprises an end part (41) bonded to the liquid absorbing structure (30), an opposite end part (42) bonded to the outer surface sheet (20), a connection part (43) located between the end parts (41, 42), and a space (44) formed between the end parts (41, 42).

Description

Disposable wearing items

The present invention relates to a disposable wearing article, and more particularly to a disposable wearing article such as a disposable diaper, a disposable toilet training pant, a disposable incontinence pant, a disposable sanitary pant having an opening for containing excreta. .

Conventionally, a diaper having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core positioned between these sheets is known. For example, in Patent Document 1, an opening communicating with the back sheet side is formed in the top sheet of the disposable diaper, and a spacer that separates the top sheet and the back sheet is attached around the opening. It is disclosed.

Since the spacer can separate the top sheet and the back sheet, when the stool is excreted into the top sheet and flows between the top sheet and the back sheet through the opening, the back flow of the stool is prevented by the spacer, Stool can be prevented from adhering to the skin of the wearer.

Japanese Patent No. 3298643 (JP 3298643 B2)

In Patent Document 1 as described above, the spacer has a substantially closed shape. In other words, the spacer has a portion extending in the longitudinal direction and a portion connecting these front and rear, and is formed in an annular shape surrounding the opening. When stool is excreted in the annular spacer, the stool remains in the spacer without flowing out of the spacer. With such a closed spacer, the capacity of the feces that can be accommodated is limited, and depending on the amount of defecation, feces may adhere to the wearer.

An object of the present invention is to provide a disposable wearing article that can prevent stool from adhering to the skin of the wearer.

The present invention has a longitudinal direction and a lateral direction, the body side and the opposite side, the front and rear waist regions and the crotch region located between the front and rear waist regions, the inner surface sheet located on the body side, and the opposite The present invention relates to improvement of a disposable wearing article in which an opening penetrating from the body side toward the outer surface sheet is formed in the inner surface sheet.

In the disposable wearing article according to the present invention, between the inner and outer surface sheets, a joining region for joining them together and a housing region located between the joining region and the opening are formed, and the housing region Includes a spacer that is elastically deformable and capable of separating the inner and outer surface sheets from each other, and the spacer includes a first abutting surface located on one of the inner surface sheet side and the outer surface sheet side. A second abutting surface located on the other side of the inner sheet and the outer sheet side, and a connecting portion located between the first and second abutting surfaces, and the first and second abutting surfaces A space portion that communicates the opening and the accommodation region is formed by the connecting portion and the connecting portion.

As one embodiment of the present invention, at least the connecting portion of the spacer is curved.

As another embodiment, a liquid absorbing structure is disposed between the inner and outer surface sheets, and the spacer is between the inner surface sheet and the liquid absorbing structure, and the liquid absorbing structure. It arrange | positions in either between the said outer surface sheets.

As another embodiment, the liquid absorbing structure has a passage that overlaps the opening and penetrates in the thickness direction.

As another embodiment, the spacer is hydrophobic.

As another embodiment, a plurality of the spacers are arranged apart from each other around the opening.

As another embodiment, the spacer is entirely formed in a U shape by the first and second contact surfaces and the connecting portion.

As another embodiment, the spacer has a cross-sectional shape in the thickness direction formed in any one of an O shape, an H shape, and a Z shape.

According to one or more embodiments of the present invention, in particular, an accommodation region is formed between the inner and outer sheet, an opening penetrating in the thickness direction is formed in the inner sheet, and the inner and outer sheet is formed around the opening. A spacer that can be separated is attached. Since the spacer is formed with a space that communicates the opening and the storage area, excrement excreted in the opening flows into the storage area through the space. Therefore, the excrement is held at a position away from the wearer's skin and can be prevented from adhering to the wearer's skin.

The partially broken top view of the disposable diaper which is an example of a disposable wearing article. The perspective view of FIG. FIG. 3 is a sectional view taken along line III-III in FIG. 1. (A) The expansion | deployment perspective view of a spacer. (B) The perspective view of a spacer. (A) (b) (c) (d) The perspective view of the spacer of other embodiment.

1 is a partially broken plan view of a disposable diaper 1 shown as an example of a disposable wearing article according to the present invention, FIG. 2 is a perspective view of the diaper 1, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. In this state, each elastic body is extended. The diaper 1 has a virtual vertical center line PP that bisects the length dimension in the horizontal direction X and a virtual horizontal center line QQ that bisects the length dimension in the vertical direction Y. It is almost symmetrical with respect to the line PP.

The diaper 1 includes a wearer's body side and the opposite clothing side, a front waist region 2, a rear waist region 3, a crotch region 4 located between the front and

rear waist regions

2 and 3, and a virtual lateral center. The front and

rear end edges

5 and 6 face each other with respect to the line QQ and extend in the horizontal direction X, and both side edges 7 face each other with respect to the virtual vertical center line PP and extend in the vertical direction Y. Both side edges 7 are formed in a concave shape so as to fit along the wearer's thigh in the crotch region 4.

The diaper 1 includes an inner sheet 10 positioned on the body side, an outer sheet 20 positioned on the clothing side, and a liquid absorbing structure 30 positioned between the inner and

outer sheets

10 and 20. The inner sheet 10 can be made of a liquid permeable nonwoven fabric or the like. An opening 11 is formed in the inner sheet 10 so as to penetrate the outer sheet 20 in the thickness direction. The opening 11 is preferably formed so as to be biased toward the rear waist region 3 with respect to the virtual lateral center line QQ, and the opening 11 is given a positional relationship corresponding to the wearer's anus when the diaper 1 is worn. Yes.

For example, a laminate of a liquid-impermeable and moisture-permeable plastic film and a fiber nonwoven fabric can be used for the outer surface sheet 20. By using a liquid-impervious and moisture-permeable plastic film, leakage of urine from the diaper 1 can be prevented, and stuffiness in the diaper 1 can be suppressed, and this is covered with a fiber nonwoven fabric. By this, the touch of the diaper 1 can be improved.

The liquid-absorbing structure 30 includes a liquid-absorbent core material 31 and a liquid-diffusible coating sheet 32 that covers the core material 31. As the core material 31, fluff pulp fibers, superabsorbent polymer particles, or a mixture thereof can be used. The liquid absorbing structure 30 is joined to the inner surface sheet 10 by a joining means such as a hot melt adhesive (not shown), and the outer surface side is not joined to the outer sheet 20. A passage 33 is formed in the liquid absorbing structure 30 at a position corresponding to the opening 11 of the inner surface sheet 10 so as to penetrate the inner surface sheet 10 in the thickness direction. Therefore, when the inner surface sheet 10 and the liquid absorbing structure 30 are laminated, the opening 11 and the passage 33 are matched, and the inner surface sheet 10 and the liquid absorbing structure 30 are directed from the body side toward the outer surface sheet 20. Penetrated.

The inner surface sheet 10 and the outer surface sheet 20 are joined around the liquid absorbing structure 30 by a joining means such as a hot melt adhesive to form a joining region 21. Inside the bonding region 21, the outer surface sheet 20 is not bonded to the inner surface sheet 10 or the liquid absorbing structure 30, and the accommodation region 22 is formed in this non-bonded region. The storage area 22 is formed between the outer sheet 20 and the liquid absorbing structure 30, and when excrement flows from the opening 11, it can diffuse in the storage area 22. 21 is prevented from flowing out to the outside. This is because the joining region 21 is formed in the whole area around the accommodation region 22 by joining the inner and

outer sheet

10, 20 in a watertight manner.

The spacer 40 is disposed between the outer surface sheet 20 and the liquid absorbing structure 30 in the accommodating region 22. As illustrated in FIG. 4A, the spacer 40 has a length in the width direction W of about 5 to 20 mm, preferably about 10 mm, and a length in the length direction L of about 30 to 150 mm. Preferably, the elastic body is an elongated rectangular piece of about 65 mm. The spacer 40 is preferably made of a hydrophobic material whose elasticity performance hardly changes even in the presence of water such as urine, such as rubber or synthetic resin.

As illustrated in FIG. 4B, the spacer 40 includes a first end portion 41 joined to the liquid absorbing structure 30, a second end portion 42 joined to the outer sheet 20, and a gap between the two

end portions

41 and 42. And a connecting portion 43 located at the same position. By joining both

end portions

41 and 42 to the liquid absorbing structure 30 and the outer sheet 20, the connecting portion 43 is curved and formed in an arc shape, and forms a U-shape as a whole. By arranging the connecting portion 43 in a curved state in this way, a space portion 44 is formed between the one end portion 41 and the other end portion 42, and the spacer 40 can be elastically deformable. In this embodiment, the first and second contact surfaces located on the inner and

outer surface sheets

10 and 20 side are formed by the both

end portions

41 and 42 and the vicinity thereof.

The spacer 40 as described above is disposed between the liquid absorbing structure 30 and the outer sheet 20 while being bent from the elongated rectangular piece of FIG. 4A and arranged in a U-shaped state of FIG. 4B. Alternatively, it can be formed in a U shape in advance, and can be fixed between the liquid absorbing structure 30 and the outer sheet 20 while maintaining this shape.

As shown in FIGS. 1 and 2, a plurality of spacers 40 are arranged around the opening 11, and in this embodiment, four spacers 40 are arranged in the vicinity of each corner of the substantially rectangular opening 11. . The spacers 40 are arranged symmetrically with respect to the virtual vertical center line PP, and the length direction L thereof does not coincide with the vertical direction Y of the diaper 1. That is, the length direction L is inclined with respect to the virtual vertical center line PP. Further, the spacers 40 are spaced apart in the horizontal direction X so as not to overlap the virtual vertical center line PP.

A leg elastic body 50 extending along both side edges 7 is attached between the inner and

outer surface sheets

10 and 20 and at least in the crotch region 4. The leg elastic body 50 is attached in a stretched state so as to be contractible, and both side edges 7 are in close contact with the vicinity of the wearer's buttocks in the crotch region 4 to prevent leakage of excrement from the diaper 1. The leg elastic body 50 can be attached to at least one of the inner and

outer surface sheets

10 and 20 by a joining region 21 formed between the inner and

outer surface sheets

10 and 20.

On the clothing side of the outer surface sheet 20, a tape tab 61 is attached to the rear waist region 3, and a hook element 62 is attached to the body side of the tape tab 61. The tape tab 61 is attached so as to extend from both side edges 7, and the hook element 62 is located in the extended portion. A loop element 63 is attached between the side edges 7 on the clothing side of the front waist region 2 of the outer sheet 20. The loop element 63 is detachably engaged with the hook element 62 and can be a pant-type diaper 1.

When the diaper 1 as described above is to be worn by the wearer, the opening 11 is positioned in the wearer's anus. In the opening 11, a gap is formed between the liquid absorbing structure 30 and the outer sheet 20 by the spacer 40, and the accommodation region 22 is expanded. In particular, since the spacer 40 is disposed around the opening 11, in the vicinity of the opening 11, the separation distance between the inner surface sheet 10 and the liquid absorbing structure 30 and the outer surface sheet 20 is increased. Even when stool or the like is excreted, the stool can be held at a position away from the wearer, and the stool can be prevented from adhering to the wearer's skin.

Since the space portion 44 is formed in the spacer 40, the body side of the diaper 1 and the accommodation region 22 are communicated with each other through the opening 11, the passage 33, and the space portion 44. Therefore, the stool or the like excreted from the body side of the diaper 1 toward the opening 11 is diffused to the accommodation region 22 through the space portion 44, and the stool can be retained further away from the wearer's skin. It is possible to prevent stool from adhering to the skin. That is, it is possible to prevent the stool from staying in the vicinity of the opening and adhering to the wearer's skin.

Since the stool or the like can be diffused in the accommodation area 22, even when there are a plurality of defecations or a large amount of defecation, it can be held away from the opening 11. In addition, when body fluid such as urine is diffused into the storage region 22, urine can be absorbed in a wide region of the liquid absorption structure 30, and the liquid absorption structure 30 can be used efficiently.
Since the spacer 40 is attached to the periphery of the opening 11 so as to be spaced apart from the opening 11, excrement can be diffused from the opening 11 to the accommodation region 22 through the space between the adjacent spacers 40.

The spacer 40 is attached in a U-shape, and can be elastically deformed when the one end portion 41 and the other end portion 42 approach or separate from each other. In particular, the inner and

outer surface sheets

10 and 20 are moved closer to or separated from each other. Therefore, when the wearer's body pressure is applied when the diaper 1 is worn, the inner sheet 10 can be brought into close contact with the body by deforming it. The one end 41 and the other end 42 are arranged toward the inside of the spacer 40 facing each other in the vertical direction Y, and the connecting portion 43 is arranged outside the vertical Y. That is, since both

end portions

41 and 42 are arranged on the center side in the longitudinal direction Y of the opening 11, when body pressure acts on the spacer 40, the spacer 40 is small on the both

end portions

41 and 42 side, and the connecting portion The accommodation area 22 can be enlarged as it is inclined so as to increase on the 43 side and away from the opening 11. Moreover, since the spacer 40 can be deformed along the wearer's body by the inclination of the spacer 40 as described above, it is possible to reduce a sense of discomfort to the wearer by attaching the spacer 40.

Both ends 41 and 42 of the spacer 40 are disposed laterally outward from the connecting portion 43, and the length direction L is attached to be inclined with respect to the virtual vertical center line PP. By inclining with respect to the virtual longitudinal center line PP in this way, the arrangement can be made in a balanced manner with respect to the opening 11, and the spacer 40 can be inclined so that it can be easily positioned with respect to the excretion position. Can do. Various arrangements of the spacer 40 can be considered according to the shape of the opening 11 and the excretion position. For example, both

end portions

41 and 42 may be arranged inward in the horizontal direction X with respect to the virtual vertical center line PP.

In the diaper 1 as described above, the spacer 40 can also be attached between the inner sheet 10 and the liquid absorbing structure 30. In this case, it is not necessary to form the passage 33 in the liquid absorbing structure 30. Alternatively, the liquid absorbing structure 30 may be formed on each of the inner sheet 10 side and the outer sheet 20 side, and the spacer 40 may be attached between these liquid absorbing structures. In the case where the liquid absorbing structure 30 is formed between the spacer 40 and the outer sheet 20, the separation distance between the inner sheet 10 and the outer sheet 20 can be increased, and a large accommodation area 22 can be secured. . In addition to the liquid absorbing structure 30, for example, a support member made of foamable polyurethane can be disposed between the spacer 40 and the outer sheet 20. It is preferable to use a support member that has elasticity and whose elastic performance is not significantly reduced by moisture.

FIG. 5 illustrates a spacer 40 in another embodiment. Since other configurations are the same as those of the above-described embodiment, detailed description thereof is omitted. As shown in FIG. 5A, the spacer 40 has an annular shape, that is, an O shape, when the diaper 1 is cut in the thickness direction by the one end portion 41, the other end portion 42, and the connecting portion 43. Yes. However, as a matter of course, when the cross section of the spacer 40 is substantially circular, the both

end portions

41 and 42 and the connecting portion 43 are not clearly defined. A space 44 is formed inside the spacer 40, and the body side of the diaper 1 can be communicated with the accommodation region 22 through the space 44.

By making the spacer 40 into an annular O shape, the spacer 40 can be deformed even when it is pressurized from any direction on its side surface. Therefore, it can respond to the pressurization in various postures of the wearer, and the inner sheet 10 can be brought into close contact with the skin of the wearer in any posture.

In addition to the above, the spacer 40 is, for example, a U-shaped tube having a circular cross section, preferably an elliptical shape as shown in FIG. 5B, an H-shaped cross section as shown in FIG. 5C, and FIG. ) As shown in FIG. 5C and 5D, the space 44 is formed on both sides of the connecting portion 43. Further, in any case of the spacer 40, it is also possible to form a notch or an opening in the connecting portion 43 to make it a space portion.

The spacer 40 having each cross-sectional shape is conceptually composed of a first contact surface (for example, the portion 41 and its vicinity in FIGS. 4 and 5) and a second contact surface (for example, FIG. 5 and the vicinity thereof, and a connecting portion (for example, a portion of reference numeral 43 in FIGS. 4 and 5) positioned between the first and second contact surfaces. Can do.

In addition to the materials described in this specification, various known materials that are usually used in this type of field can be used without limitation for the respective components constituting the diaper 1.

1 disposable diaper (disposable wearing article)
2 Front waist region 3 Rear waist region 4 Crotch region 10 Inner surface sheet 11 Opening 20 Outer surface sheet 21 Joining region 22 Storage region 30 Liquid absorbing structure 33 Passage 40 Spacer 41 One end (first contact surface)
42 The other end (second contact surface)
43 Connecting portion 44 Space portion Y Vertical direction X Horizontal direction

Claims

It has a longitudinal direction and a lateral direction, and is located on the body side and the opposite side, the front and rear waist region and the crotch region located between the front and rear waist regions, the inner surface sheet located on the body side, and the opposite side A disposable wearing article in which an opening penetrating from the body side toward the outer surface sheet side is formed in the inner surface sheet.
Between the inner and outer surface sheets, a bonding region for bonding them together, and an accommodation region positioned between the bonding region and the opening are formed,
A spacer that is elastically deformable and can separate the inner and outer surface sheets from each other is disposed in the housing region, and the spacer is a first contact located on one of the inner surface sheet side and the outer surface sheet side. A contact surface, a second contact surface located on the other side of the inner sheet and the outer sheet side, and a connecting portion positioned between the first and second contact surfaces, the first and second The disposable wearing article, wherein a space that communicates the opening and the accommodation region is formed by the contact surface and the connecting portion.
The disposable wearing article according to claim 1, wherein at least the connecting portion is curved in the spacer.
Between the inner and outer sheet, a liquid absorbing structure is disposed,
The disposable wearing article according to claim 1 or 2, wherein the spacer is disposed between the inner sheet and the liquid absorbing structure and between the liquid absorbing structure and the outer sheet.
The disposable wearing article according to claim 3, wherein the liquid absorbing structure has the passage that overlaps the opening and penetrates in the thickness direction thereof.
The disposable wearing article according to any one of claims 1 to 4, wherein the spacer is hydrophobic.
The disposable wearing article according to any one of claims 1 to 5, wherein a plurality of the spacers are arranged apart from each other around the opening.
The disposable wearing article according to any one of claims 1 to 6, wherein the spacer is entirely formed in a U shape by the first and second contact surfaces and the connecting portion.
The disposable wearing article according to any one of claims 1 to 6, wherein the spacer has a cross-sectional shape in a thickness direction formed in any one of an O shape, an H shape, and a Z shape.