TWI702036B - Disposable diapers - Google Patents

Abstract

The subject of the present invention is to improve the air permeability of the live gather formation part in a disposable diaper separated into a front body exterior body, a rear body exterior body, and an absorbent body.

The solution of the present invention is to provide a disposable diaper, including a front body outer body 10, a back body outer body 20, and an absorbent body 30, wherein the absorbent body 30 has an upward fold extending in the width direction of the diaper. 41 and the connecting portion 40 of the down-folding portion 42 are connected to either or both of the front body exterior body 10 and the rear body exterior body 20, and the connecting portion 40 is liquid-tight and leak-proof The sheet 51 and the outer non-woven fabric sheet 52 on the non-skin-facing side of the leak-proof sheet 51 are laminated in the thickness direction. The outer non-woven sheet 52 extends beyond the upper and lower edges 51a and 51b of the leak-proof sheet 51 in the length direction of the diaper. Both or either end edge.

Description

Disposable diapers

The present invention relates to a disposable diaper worn on the crotch of a wearer to absorb and retain liquids such as urine.

Traditionally, disposable diapers with multiple live pleats formed on the back are well known. For example, in the disposable diaper disclosed in Patent Document 1, the live pleats are formed by folding the sheet members constituting the back body along the upward and downward fold lines. For example, when the wearer leans forward, the live pleats can expand in the up and down direction in accordance with the extension of the back of the wearer. Therefore, the back body of the diaper can be prevented from shifting toward the wearer's crotch part and become slack near the crotch part, and it can prevent the wearer's back from being exposed due to insufficient length of the back body part, or A situation where there is a gap between the disposable diaper and the back of the wearer.

Prior art literature Patent literature

[Patent Document 1] JP 2012-239555 A

As mentioned above, by forming a plurality of live pleats on the back of the disposable diaper, the diaper can conform to the stretching of the wearer's body, thereby enhancing the fit or wearing feeling of the diaper. However, since the live pleats are formed by folding the sheet members that make up the back body, the air permeability of the overlapping parts of the sheet members is reduced, causing moisture to be trapped between the wearer's skin and the diaper, which may cause dampness to wear. The user may be unhappy. In addition, when the number of live pleats is more, the ventilation is significantly reduced. Low problem.

Therefore, the object of the present invention is to improve the ventilation of the live pleat formation part in a disposable diaper separated into a front body outer body, a back body outer body, and an absorbent body.

The present invention relates to a disposable diaper. The disposable diaper of the present invention includes a front body exterior body 10 located on the abdomen side of the wearer, a back body exterior body 20 located on the back side of the wearer, and an absorbent body 30 located in the crotch of the wearer. The present invention can be applied to any of underwear type disposable diapers and belt type disposable diapers. Underpants-type disposable diapers, the front body outer body 10 and the back body outer body 20 are connected into a substantially ring shape by joining the side sealing parts provided on the left and right sides of the disposable diaper in the width direction, and are formed with The type of the waist openings around the belly of the wearer and the leg openings around the feet of the wearer. For the belt-type disposable diaper, a pair of left and right fixing belts are installed at the widthwise ends of one side of the front body outer body 10 and the back body outer body 20, and the fixing belt is fixed to The outer body on the other side is installed in the crotch of the wearer.

The absorbent main body 30 is connected to either or both of the front body outer body 10 and the back body outer body 20 via a connecting portion 40 having an upward folded portion 41 and a downward folded portion 42 extending in the width direction of the disposable diaper The exterior body of the person. The "fold-up portion" referred to here refers to the folded-back portion that protrudes upward in the wearing state, and the "folded-down portion" refers to the folded-back portion that protrudes downward in the worn state. In addition, the connecting portion 40 may be another independent member separated from the front body exterior body 10, the rear body exterior body 20, and the absorbent body 30, may also be a member integrated with the absorbent body 30, or may be An integral component with the exterior body. In addition, in the specification of the present case, when the "exterior body" is simply referred to, it refers to both or either of the front exterior body 10 and the rear exterior body 20.

According to the above-mentioned structure, by providing a connecting portion 40 between the absorbent main body 30 and the exterior bodies 10 and 20, and forming a live pleat in the connecting portion 40, That can improve the ventilation of the live fold formation site.

Furthermore, it is necessary to prevent leakage of excrement such as urine or soft stools from the connecting portion 40. Therefore, in the present invention, the connecting portion 40 is formed in a structure in which the leak-proof sheet 51 and the outer nonwoven fabric sheet 52 on the non-skin-facing side of the leak-proof sheet 51 are laminated in the thickness direction. The leak-proof sheet 51 is preferably a sheet member having liquid impermeability and air permeability. The outer non-woven fabric sheet 52 is mainly composed of non-woven fabric, but may be composed of only non-woven fabric. By including the leakage prevention sheet 51 in the connecting portion 40, leakage of excrement can be prevented. Furthermore, by covering the non-skin-facing surface side of the leak-proof sheet 51 with the outer nonwoven fabric sheet 52, the feel of the connecting portion 40 can be improved.

In the present invention, the outer non-woven fabric sheet 52 extends beyond either or both of the upper edge 51a and the lower edge 51b of the leak-proof sheet 51 in the length direction of the disposable diaper. In addition, the term "upper edge" refers to the edge on the upper side in the worn state, that is, the edge on the side of the waist opening of the disposable diaper. In addition, the "lower end edge" refers to the lower end edge in the worn state, that is, the crotch side end edge of the disposable diaper. In this way, by covering the upper edge 51a and/or the lower edge 51b of the leak-proof sheet 51 with the outer non-woven fabric sheet 52, the feel or appearance can be improved.

The connecting portion 40 has an intermediate region 43 located between the upwardly folded portion 41 and the downwardly folded portion 42. The middle area 43 has a joining area 43a, and the joining area 43a is attached to the face of the intermediate area 43 to face the skin in a peelable or non-peelable manner when the connecting portion 40 is in the folded state of the upward fold 41 and the downward fold 42 A part facing either or both of the part on the face side and the part facing the non-skin face side. In addition, the intermediate region 43 is not only joined to the part facing the skin-facing surface in the joining region 43a, but also can be joined to the part facing the non-skin-facing surface. Moreover, the joining area 43a may cover the entire area of the intermediate area 43, but in this case, the joining area 43a is a part that releasably joins the intermediate area 43 to its facing portion (that is, temporarily joined). In addition, the bonding area 43a can also non-peelably connect the middle area 43 It fits in the facing part, but in this case, the joining area 43a is partially set in the middle area 43. In addition, when the joining area 43a is provided in a part of the middle area 43, the other areas are called non-joining areas 43b. In addition, in the underpants-type disposable diaper, it can also be interpreted that the so-called side seal part 4 functions as the joining area 43a referred to here.

In the disposable diaper of the present invention, the connecting portion 40 and the exterior body preferably form separate bodies. In this case, the connecting portion 40 further has an inner side area 44 having a joining portion 44a extending from the down-folding portion 42 to the outer body side and joined to the non-skin-facing side of the outer body. Moreover, in the joining portion 44 a of the inner region 44, it is preferable that the outer non-woven fabric sheet 52 extends beyond the upper end edge 51 a of the leakage preventing sheet 51.

In the disposable diaper of the present invention, the connecting portion 40 and the absorbent main body 30 preferably form separate bodies. In this case, the connecting portion 40 further has an outer region 45 having a joining portion 45a extending from the upward folded portion 41 toward the absorbent body 30 and joined to the non-skin-facing side of the absorbent body 30. Furthermore, it is preferable that the outer non-woven fabric sheet 52 extends beyond the lower end edge 51 b of the leakage prevention sheet 51 in the joining portion 45 a of the outer region 45.

According to the above configuration, in the part where the connecting portion 40 is joined to the exterior body or the absorbent body 30, the outer nonwoven fabric sheet 52 extends beyond the end edges 51a, 51b of the leak-proof sheet 51, and the outer nonwoven fabric sheet 52 can completely cover the The end edges 51a and 51b of the leakage prevention sheet 51 prevent the leakage prevention sheet 51 from being exposed. In addition, according to the above configuration, since the outer non-woven fabric sheet 52 is made of non-woven fabric, the outer non-woven fabric sheet 52 completely covers the edge of the leak-proof sheet 51 to improve the appearance or feel.

In the disposable diaper of the present invention, the connecting portion 40 may further laminate the inner non-woven fabric sheet 53 in the thickness direction on the skin-facing side of the leak-proof sheet 51. The inner non-woven fabric sheet 53 is mainly composed of non-woven fabric, but may also be composed only of non-woven fabric. In this case, the inner non-woven fabric sheet 53 is preferably The surface non-woven fabric sheet 52 extends beyond both or either of the upper end edge 51a and the lower end edge 51b of the leak-proof sheet 51 in the longitudinal direction of the disposable diaper. In particular, the outer non-woven fabric sheet 52 and the inner non-woven fabric sheet 53 that sandwich the leak-proof sheet 51 are preferably joined to each other at a portion extending beyond the edge of the leak-proof sheet 51.

According to the above structure, the inner non-woven fabric sheet 53 is also attached to the skin-facing surface of the leak-proof sheet 51, so that the wearer’s skin does not directly touch the leak-proof sheet 51, but the inner non-woven fabric sheet has a good touch. 53 Contact with skin. Furthermore, according to the above configuration, since the inner nonwoven fabric sheet 53 with a pleasant skin touch touches the wearer's skin, the gap between the skin and the connecting portion 40 is secured, and the moisture trapped between the two can be discharged to the outside.

In the disposable diaper of the present invention, the outer non-woven fabric sheet 52 can also be set to exceed either or both of the upper edge 51a and the lower edge 51b of the leak-proof sheet 51, and then be folded back to the skin-facing side of the leak-proof sheet 51 Face side. That is, a structure is formed in which the end edges 51a and 51b of the leakage prevention sheet 51 are sandwiched by the outer nonwoven fabric sheet 52 from both the skin-facing surface and the non-skin-facing surface.

According to the above structure, the structure in which the outer non-woven fabric sheet 52 is used to sandwich the end edges 51a and 51b of the leakage prevention sheet 51 can more reliably prevent the end edges of the leakage prevention sheet 51 from being exposed. Furthermore, if the outer non-woven sheet 52 is extended to the non-skin-facing surface of the leak-proof sheet 51, the outer non-woven sheet 52 can be used to prevent the leak-proof sheet 51 from directly contacting the wearer's skin. In other words, the function of the aforementioned inner nonwoven fabric sheet 53 can be performed by the outer nonwoven fabric sheet 52.

According to the present invention, in a disposable diaper that is separated into a front body exterior body, a back body exterior body, and an absorbent body, the ventilation of the live pleat formation portion can be improved.

1: predecessor

2: back

3: Inseam

4: Side sealing part

4a: Notch

5: Waist opening

6: leg opening

10: Predecessor exterior body

11: inner film

12: External film

13: Waist telescopic member

20: Back body exterior body

21: inner film

22: External film

23: Waist telescopic member

30: Absorbent body

31: Absorber

32: loading

33: back piece

34: cover sheet

35: side piece

36: Three-dimensional pleated telescopic member

37: Leg telescopic member

40: Connection

40A: Front connecting member

40B: Rear connecting member

41: Fold up

42: Fold down

43: middle area

43a: junction area

43b: Non-joining area

44: Inside area

44a: Joint

45: Outer area

45a: Joint

46: Joint telescopic member

47: Lower abdominal telescopic member

51: Leakproof sheet

51a: upper edge

51b: lower edge

52: Outer non-woven piece

52a: Upper extension

52b: Lower side extension

53: inner non-woven sheet

53a: Upper extension

53b: Lower side extension

100: disposable diapers

Fig. 1 is a schematic external perspective view of a disposable diaper according to an embodiment of the present invention.

Figure 2 is a development view of a disposable diaper according to an embodiment of the present invention.

Figure 3 is a longitudinal sectional view of a disposable diaper according to an embodiment of the present invention.

Figure 4 is a longitudinal cross-sectional view of a state in which live pleats are unfolded from the state shown in Figure 3.

Fig. 5 is a perspective view of the appearance of the state in which the live pleats are unfolded from the state shown in Fig. 1.

Fig. 6 is an enlarged longitudinal sectional view of the main points of the rear body side enlarged in the longitudinal sectional view shown in Fig. 3.

Figure 7 is a cross-sectional view of a first modification of the disposable diaper of the present invention corresponding to Figure 6.

Figure 8 is a cross-sectional view of a second modification of the disposable diaper of the present invention corresponding to Figure 6.

Fig. 9 is an external perspective view of a third modification of the disposable diaper of the present invention corresponding to Fig. 1.

[Embodiment of Invention]

Hereinafter, embodiments of the present invention will be described using the drawings. The present invention is not limited to the form described below, and may include appropriate changes from the form described below that are obvious to those in the industry.

In the specification of this case, the term "length direction" refers to the front and rear direction of the disposable diaper, which means the connection direction between the front body and the back body of the disposable diaper. In addition, the term "width direction" means a direction orthogonal to the longitudinal direction on a plane. In the diagram in this case, the "length direction" is represented by the Y axis, and the "width direction" is represented by the X axis.

In the specification of this case, the "skin-facing side" refers to the side facing the wearer's skin when the disposable diaper is worn. Furthermore, the term "non-skin-facing side" refers to the side that is not facing the wearer's skin in the disposable diaper wearing state, that is, the side opposite to the skin-facing side.

In the specification of this case, the term "A to B" means "above A and below B".

[Exterior body and absorbent body]

Figure 1 is an external perspective view of a disposable diaper according to an embodiment of the present invention. In addition, Fig. 2 is an expanded view of the disposable diaper shown in Fig. 1, which shows the state of the diaper viewed from the side facing the skin. In addition, Fig. 3 is a longitudinal cross-sectional view of the disposable diaper shown in Fig. 1, which is a cross-sectional structure along the line III-III shown in Fig. 1. In the specification of the present case, the application of the present invention to a brief-type disposable diaper is taken as an example to describe the present invention. However, the present invention is not limited to the use of underpants-type disposable diapers, and can also be applied to belt-type disposable diapers.

As shown in Figures 1 to 3, the disposable diaper 100 of the present invention is divided in the longitudinal direction (Y-axis direction) into: the front body that contacts the wearer's abdomen 1, the back body that contacts the wearer's back 2, and The crotch 3 is located between the front body 1 and the back body 2. In this embodiment, the front body exterior body 10 is located on the front body 1, and the rear body exterior body 20 is located on the back body 2. In addition, the absorbent body 30 is located in the crotch 3. The absorbent body 30 overlaps the front body 1 and the back body 2 with the lower crotch 3 as the center, and extends in the longitudinal direction. Therefore, in the absorbent main body 30, the end on the front body 1 side overlaps the front body exterior body 10 in the thickness direction. On the other hand, the end on the back body 2 side overlaps the back body exterior body 20 in the thickness direction. In the present invention, the front body exterior body 10, the rear body exterior body 20, and the absorbent body 30 are basically composed of separate members. In this embodiment, each of the exterior bodies 10 and 20 is formed in a substantially rectangular shape long in the width direction in a plan view. Furthermore, the absorptive main body 30 is formed in a substantially rectangular shape long in the longitudinal direction in a plan view. However, the shapes of the exterior bodies 10 and 20 and the absorbent main body 30 are not limited to those shown in the drawings, and can be appropriately deformed within the range in which the functions of the present invention can be exhibited.

Furthermore, the front body exterior body 10 and the rear body exterior body 20 are provided with side sealing portions 4 at the left and right end portions in the width direction (X-axis direction). The side sealing portion 4 faces the left and right ends of the front body exterior body 10 and the rear body exterior body 20 The parts are joined to each other. The bonding method can be a conventional method such as heat sealing, ultrasonic sealing, or bonding using a hot melt adhesive. As shown in FIG. 1, by joining the front body exterior body 10 and the rear body exterior body 20 at the side sealing part 4, these exterior bodies 10 and 20 are connected in a ring shape. Moreover, the waist opening 5 is defined by the upper edges of the front body exterior body 10 and the rear body exterior body 20. Furthermore, from the lower end of the front body exterior body 10 to the lower end of the rear body exterior body 20, the absorptive body 30 is arranged so as to be erected. Therefore, the left and right leg openings 6 can be defined by the left and right side edges of the absorbent body 30 and the lower edges of the outer covering bodies 10 and 20. The wearer can insert both feet through the waist opening 5, and then extend one foot from the left and right leg openings 6 to put on the underwear-type disposable diaper 100.

As shown in Figure 3, each exterior body 10, 20 includes: inner sheets 11, 21 on the side facing the skin; outer sheets 12, 22 on the side not facing the skin; and between the inner sheet and the outer sheet One or more waist telescopic members 13, 23. When there are a plurality of waist elastic members 13, 23, they are arranged at a predetermined interval in the longitudinal direction. The waist elastic members 13 and 23 are sandwiched and fixed between the inner sheets 11 and 21 and the outer sheets 12 and 22 in a state extended in the width direction of the diaper. For example, hot-melt adhesive is directly applied to the stretched waist elastic members 13, 23, and then the body coated with the adhesive is arranged on the inner sheets 11, 21 and the outer sheets 12, 22 In between. In this way, when the waist elastic members 13 and 23 shrink, the inner sheets 11 and 21 and the outer sheets 12 and 22 will be folded to form a plurality of small wrinkles (waist gathers). Although the number of the waist elastic members 13 and 23 is not particularly limited, it is preferably 3-20 or 4-15, for example.

The sheet members forming the inner sheets 11 and 21 and the outer sheets 12 and 22 can be made of conventional products. Although not particularly limited, those made of non-woven fabrics with good skin touch are preferable. Examples of non-woven fabrics include hot-air non-woven fabrics, point-fusion non-woven fabrics, bonded non-woven fabrics, air-flow non-woven fabrics, melt-blown non-woven fabrics, SMS non-woven fabrics, SMMS non-woven fabrics, and the like. In addition, the waist elastic members 13, 23 can utilize the conventional elasticity A telescopic member, but for example, a thread-like elastic rubber is more suitable. Such rubber materials can use styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene-butadiene, and silicone , Polyester and other materials.

Furthermore, as shown in Figure 3, the outer sheets 12 and 22 can also be extended upward in the longitudinal direction than the inner sheets 11 and 21, and then the extended portion can be folded back at the end edge of the waist opening 5 It faces the skin side and is joined to the skin-facing side of the inner sheets 11 and 21. In this way, the skin of the waist opening 5 can be soft to the touch.

As shown in Fig. 3, the absorbent body 30 basically includes: an absorbent body 31 for absorbing and holding body fluids; a liquid-permeable top sheet 32 covering the absorbent body 31 facing the skin; and covering the absorbent body 31 It is not a liquid-impermeable back sheet facing the skin side 33. The top sheet 32 and the back sheet 33 are attached to the periphery of the absorbent body 31. The body fluid excreted from the crotch of the wearer penetrates the top sheet 32 and is guided to the absorber 31, and the back sheet 33 prevents it from leaking to the outside.

The absorber 31 is an element for absorbing body fluids such as urine and holding the absorbed body fluids. The absorber 31 is usually formed by covering an absorbent material with a chip-on-chip such as facial tissue. The absorbent material constituting the absorbent body 31 can be a conventional material. The absorbent material can be, for example, fluff pulp, super absorbent polymer, or hydrophilic sheet. In addition, the absorbent material may be used alone in fluff pulp, superabsorbent polymer, or hydrophilic sheet, or two or more of them may be used in combination. The absorbent material can generally be formed into a single layer or multiple layers of mat-like products. The shape of the absorber 31 can be appropriately designed according to the shape, size, and purpose of the disposable diaper. For example, the shape of the absorber 31 may be an hourglass shape as shown in FIG. 2, or may be a generally used rectangular shape, an elliptical shape, or a gourd shape.

The top sheet 32 is an element that directly contacts the skin of the wearer's crotch and allows body fluids such as urine to penetrate into the absorber 31. Therefore, the top sheet 32 is made of a highly flexible liquid-permeable material. In addition, in the specification of this case, all The term "liquid permeability" means: for example, when 5ml of water at room temperature is poured on the sample under standard atmospheric pressure, the water can be permeable in less than 1 minute. Furthermore, examples of the liquid-permeable material constituting the top sheet 32 include woven fabric, non-woven fabric, or porous film. In addition, it is also possible to apply a hydrophilization treatment to fibers of a thermoplastic resin such as polypropylene, polyethylene, polyester, nylon, and the like, and then make a non-woven product.

The back sheet 33 is an element that prevents body fluids that have penetrated the top sheet 32 and absorbed by the absorber 31 from leaking to the outside. Therefore, the back sheet 33 is made of liquid-impermeable material. In the specification of this case, the term "liquid impermeability" means: for example, when 5ml of water at room temperature is poured on the sample under standard atmospheric pressure, the water will not penetrate even after 1 minute or more. An example of the liquid-impermeable material constituting the back sheet 33 is a plastic film made of polyethylene resin or the like. In particular, the back sheet 33 preferably uses a microporous polyethylene film formed with a plurality of micropores of 0.1 to 4 μm.

In addition to the above configuration, the absorbent main body 30 also has a cover sheet 34 on the non-skin-facing side of the back sheet 33. In order to cover the back sheet 33 and improve its feel, the cover sheet 34 is attached to the non-skin-facing surface of the back sheet 33. The material constituting the cover sheet 34 may be a woven fabric or a non-woven fabric. In particular, the material constituting the cover sheet 34 is preferably a non-woven fabric or wet non-woven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester.

Furthermore, in addition to the above-mentioned structure, the absorbent main body 30 also has a member for forming three-dimensional pleats. The three-dimensional pleats are composed of a pair of side panels 35 arranged along the left and right side edges of the absorbent body 31 and having water repellency, and one or more three-dimensional pleated stretchable members arranged on the inner ends of the side panels 35 in the width direction 36 constituted. The side sheet 35 has a fixing portion fixed to the skin-facing surface of the top sheet 32 in the longitudinal direction, and a free end portion located on the inner side of the fixing portion in the width direction and not fixed to the top sheet 32. Moreover, the three-dimensional pleated stretchable member 36 is fixed to the free end of the side panel 35 in an extended state in the longitudinal direction. Therefore, when the three-dimensional pleated telescopic member 36 is contracted, it is With the shrinking force, the free ends of the side panels 35 will rise up to form a three-dimensional pleat. The three-dimensional pleats formed in this way are erected along both side edges of the absorbent body 31, and serve as a leak-proof wall preventing the body fluid excreted by the wearer from leaking laterally.

Furthermore, in addition to the above-mentioned configuration, the absorbent main body 30 further has leg stretch members 37 along the left and right side edges in the width direction of the absorbent main body 30. The leg stretchable member 37 is fixed to the non-skin-facing surface of the side panel 35 in a state extended in the longitudinal direction, for example. When the leg stretchable member 37 is contracted, the side panels 35 will be folded to form a plurality of fine wrinkles (leg gathers).

[Link]

The disposable diaper 100 of the present invention further includes a connecting portion 40 for connecting the absorbent main body 30 to an outer body of either or both of the front body outer body 10 and the back body outer body 20. In the embodiment described in the present specification, a front connecting member 40A for connecting the absorbent main body 30 and the front body exterior body 10, and a rear side connecting member 40B for connecting the absorbent body 30 and the rear body exterior body 20 are provided As the connecting portion 40. In addition, in the present invention, the connecting portion 40 may be provided on at least one side of the front body 1 side and the rear body 2 side. In particular, the connecting portion 40 is preferably provided with a form in which at least the absorbent main body 30 and the back body exterior body 20 are connected.

Furthermore, as shown in the cross-sectional view of FIG. 3, in this embodiment, the front side connecting member 40A, the front body exterior body 10, and the absorbent main body 30 belong to separate body members. Similarly, the rear connecting member 40B, the rear body exterior body 20 and the absorbent main body 30 also belong to separate pieces. However, although omitted in the figure, the front side connecting member 40A (connecting portion 40) may be formed as an integral member with the front body exterior body 10, or may be formed as an integral member with the absorbent main body 30. Similarly, the rear connecting member 40B (the connecting portion 40) may be formed as an integral member with the back body exterior body 20, or may be formed as an integral member with the absorbent main body 30.

As shown in Figures 2 and 3, the front and rear The structural members 40A, 40B are arranged on the non-skin-facing side of each of the exterior bodies 10, 20 and the absorbent body 30, and the width direction is formed to be approximately the same width as the respective exterior bodies 10, 20. In this embodiment, each connecting member 40A, 40B is formed in a substantially rectangular shape long in the width direction in a plan view. Each connecting member 40A, 40B overlaps a part of each exterior body 10, 20 in the longitudinal direction. Except for the overlapped portion, the width direction ends of each connecting member 40A, 40B are applied Side sealing. That is, the left and right end portions in the width direction of each connecting member 40A, 40B are provided with side sealing portions 4 at portions other than the respective exterior bodies 10, 20 and the overlapping portion. In addition, in the widthwise end portions of each exterior body 10, 20, each connecting member 40A, 40B and the portion other than the overlapping portion are used as the side sealing portion 4, and the front connecting member 40A is connected to the rear side The connecting member 40B is joined to each other at the left and right side sealing portions 4 to form a panty shape.

As shown in Fig. 3, each connecting member 40A, 40B is folded into a substantially N-shaped cross section, and in the upper end of each connecting member 40A, 40B, the area facing the skin surface side is joined to each of the exterior bodies 10, 20, On the other hand, in the lower end of each connecting member 40A, 40B, the area facing the skin surface side is joined to the absorbent main body 30. When specifically described, the connecting members 40A and 40B have an upwardly foldable portion 41 that protrudes upward in the worn state, and a downwardly foldable portion 42 that protrudes downwardly in the worn state. In this embodiment, comparing the upward-folding portion 41 and the downward-folding portion 42, they are in a relative form. The upward-folding portion 41 is located on the non-skin-facing side and the downward-folding portion 42 is located on the skin-facing side. These upward-folded portions 41 and downward-folded portions 42 extend linearly in the width direction of the respective connecting members 40A and 40B. Therefore, by folding along these up-folding portions 41 and down-folding portions 42, each of the connecting members 40A, 40B has a substantially N-shaped cross-section, forming a portion including three layers. In the present specification, the structure of each connecting member 40A, 40B that can be folded along the upward folding portion 41 and the downward folding portion 42 is called a "live pleat". In this embodiment, although each connecting member 40A, 40B is made into a substantially N-shaped cross section, it is not limited to this, and may have a substantially reversed N-shaped cross section. Type, or structure with multiple live pleats.

In addition, as shown in FIG. 3, each connecting member 40A, 40B is divided into a middle area 43, an inner area 44, and an outer area 45 with the upward folded portion 41 and the downward folded portion 42 as the boundary line. The middle area 43 is the area between the upwardly folded portion 41 and the downwardly folded portion 42. In addition, the inner region 44 is a region that extends from the folded-down portion 42 to the sides of the respective exterior bodies 10 and 20 to the upper side, and has a joining portion 44a joined to the non-skin-facing side of the exterior body. In addition, in the example of FIG. 3, the entire area of the inner region 44 is formed as the joint portion 44a, but at least a part of the inner region 44 may be joined to each of the exterior bodies 10 and 20. In addition, the outer region 45 is a region extending from the upward fold 41 to the side of the absorbent main body 30 to the bottom, and having a joint portion 45a joined to the non-skin-facing side of the absorbent main body 30. In addition, in the example of FIG. 3, the outer region 45 is a partial region on the lower end side (the crotch side) as the joining part 45a, but the entire outer region 45 may be joined to the absorbent main body 30. Each of the joining parts 44a and 45a described here can be realized by a conventional adhesive such as a hot melt adhesive.

In the example shown in FIG. 3, the inner region 44 of each connecting member 40A, 40B is joined to the non-skin-facing surface of the lower end of each exterior body 10, 20 in the longitudinal direction. In addition, the outer region 45 of each connecting member 40A, 40B is joined to the non-skin-facing surface of the upper end of the absorbent main body 30 in the longitudinal direction. In this way, each connecting member 40A, 40B can play the role of connecting each outer body 10, 20 and the absorbent main body 30. In addition, here is shown an example in which the inner region 44 of each connecting member 40A, 40B is joined to the lower end side of each exterior body 10, 20. However, the inner region 44 may be joined to the upper end side of each of the exterior bodies 10 and 20. The inner region 44 is to be joined to the non-skin surface of the exterior bodies 10 and 20, and can be freely designed to some extent.

In addition, returning to FIG. 2 for description, each connecting member 40A, 40B is in a folded state at the upward folding portion 41 and the downward folding portion 42. In this state, at least one of the middle area 43 in the entire width direction area Part of it has a joining area 43a, which is releasably joined to the part of the middle area 43 facing the skin surface. Furthermore, in the example shown in FIG. 2, a joining area 43a is partially formed in the intermediate area 43, and the part other than this part is referred to as a non-joining area 43b. For example, referring to the example in FIG. 3, the inner region 44 is located on the skin-facing side of the middle region 43, and in the joint region 43a shown in FIG. 2, the middle region 43 and the inner region 44 are in a joined state. In addition, in the joining area 43a, the intermediate area 43 may replace the inner area 44 to join the outer area 45 or the absorbent body 30 on the non-skin-facing side, or the intermediate area 43 may be joined together with the inner area 44 to join the outer area The outer region 45 or the absorbent body 30 facing the skin surface side. In this way, in the joining area 43a, the respective connecting members 40A, 40B are fixed in a folded state to restrict unintentional expansion. By peeling off the joining area 43a, the connecting members 40A and 40B can be expanded. and also. Fig. 3 is a longitudinal cross-sectional view of the non-joining area 43b.

In Fig. 2, a mesh bottom is applied to the joining area 43a schematically for display. In the example shown here, the joining area 43a is arranged so that the joining area 43a is provided in the area where the absorbent main body 30 is located in the area where each connecting member 40A, 40B and each outer casing 10, 20 overlap in the thickness direction. The left and right sides of the width direction do not overlap with the absorbent body 30. That is, in a plan view, the lengthwise range of the overlapping portion of each exterior body (10, 20), each connecting member (40A, 40B), and the absorbent main body 30 is the non-joining area 43b. In this way, the joining area 43a can also be defined as an area having a certain width in the width direction in a range that does not overlap with the absorbent body 30. However, in the panty type diaper, the side sealing part 4 itself can function as the joining area 43a. Therefore, in the underpants type diaper, it can be said that it is not necessary to join the connecting members 40A, 40B and the outer covering bodies 10, 20 with a hot melt adhesive or the like outside the side sealing portion 4. That is, the joining area 43a shown as the bottom of the screen in Figure 2 may be omitted.

According to the above-mentioned structure, by using separate parts A connecting portion 40 is provided between the retractable body 30 and the exterior bodies 10 and 20 to form live pleats, so that the expandability of the live pleats can be improved. That is, when the absorbent main body 30 is stretched, the connecting portion 40 expands the live pleats in accordance with this action, so it can be said that it is easier to expand the live pleats. Next, if the live pleats are unfolded, when the live pleats are pushed by clothes or the like worn by the wearer, they can function like a pump, and it is also expected to exert the effect of discharging moisture trapped inside the diaper. In addition, by connecting the outer covering bodies 10, 20 and the absorbent main body 30 by the connecting members 40A, 40B, when the connecting members 40A, 40B constituting the live pleats are unfolded, the outer covering bodies 10, 20 and The absorbent main body 30 is separated in the longitudinal direction, and can be extended in the longitudinal direction of the disposable diaper. Figures 4 and 5 schematically show that by peeling off the joining area 43a, the connecting members 40A, 40B are expanded, the space defined by these connecting members is expanded, and the exterior bodies 10, 20 is separated from the absorbent body 30. In this way, by forming a structure in which the live pleats of the connecting members 40A, 40B can be unfolded as required, the outer covering body 10, 20 or the absorbent body 30 can be adjusted to follow the movement of the wearer, so it can Effectively prevent the gap between the wearer's skin and the diaper. Furthermore, since the fitting performance of the diaper to the wearer's skin is improved, the wearing feeling is improved. When the aforementioned joining area 43a is peelable in the longitudinal direction, by peeling the joining area 43a, each of the connecting members 40A and 40B can be expanded as shown in FIGS. 4 and 5.

Furthermore, as shown in Figure 2, in a state where the connecting members 40A, 40B are completely folded along the upward folding portion 41 and the downward folding portion 42, each of the exterior bodies 10, 20 covers the longitudinal end of the absorbent body 30 The skin-facing side of the part is better. That is, by the upward folded portion 41 of each connecting member 40A, 40B extending in the width direction (refer to FIG. 3), the edge of the joining region 43a extending in the length direction, the middle region 43, and the outer region 45, it is possible to define There is a space for the downward opening. Moreover, the longitudinal end of the absorbent body 30 can be accommodated in the space. In addition, although the illustration is omitted, the longitudinal end of the absorbent body 31 constituting the absorbent body 30 may also be accommodated in the space defined here. In between. With this configuration, body fluids or soft stools flowing in the longitudinal direction of the absorbent main body 30 can be contained in this space, and leakage to the outside can be prevented.

In addition, the intermediate region 43 may be non-detachably bonded to the inner region 44 or the outer region 45 in the bonding region 43a. In this case, since the intermediate region 43 is not joined to the skin-facing surface side and the non-skin-facing surface side in the non-joining region 43b, each connecting member 40A, 40B can be freely expanded as needed. In this case, for example, when the wearer starts to exercise, the live pleats of the respective connecting members 40A, 40B are unfolded in the non-joining area 43b. When the non-expanded state and the expanded state of each connecting member 40A, 40B are repeatedly presented due to the movement of the wearer, the space defined by each connecting member will expand and shrink from time to time, so that the live folds of each connecting member Part of it functions like a pump, so that the air remaining in the space is continuously discharged. By using the unfolding of the live pleats in this way, the moisture remaining in the space of the respective connecting members 40A, 40B can be easily discharged, and the air permeability of the live pleat formation portion can be improved. In addition, in the widthwise left and right ends of the connecting members 40A, 40B, in addition to the overlapping parts with the exterior body 10, 20, although the side sealing is applied, the overlapping part may also be connected to the exterior body. 10 and 20 are sealed together on the sides to be peelable or non-peelable. When the overlapped portion is side-sealed with the exterior bodies 10 and 20, the joining area 43a can be omitted. In addition, the entire lengthwise regions of the left and right end portions in the width direction of the connecting members 40A and 40B may be separately non-detachable side seals with the exterior bodies 10 and 20.

In this way, the intermediate area 43 and the joining area 43a that joins the facing parts thereof can be either a peelable temporary joining or a non-peelable joining. The peelable temporary bonding and non-peelable bonding of the bonding area 43a described here can be achieved by using conventional adhesives such as hot-melt adhesives. You can choose as long as you adjust the coating amount or adhesion of the adhesive. Peelable or non-peelable. The so-called peelable joining state means, for example, when it is presumed to be peeled, the two can be peeled off without cracking or breaking the middle area 43 or the sheet member constituting the facing portion. relatively Ground, the non-peelable joining state means that, for example, peeling is not preconceived, and if peeling is to be performed, cracks or breakage of the sheet member constituting the facing portion of the middle area 43 will occur. status. In addition, although the joining area 43a may cover the entire width direction area of the middle area 43, in this case, the joining area 43a releasably joins (ie, temporarily joins) the middle area 43 to its facing portion. In addition, although the joining area 43a can also non-detachably join the intermediate area 43 to the part it faces, in this case, the joining area 43a is partially provided in the width direction of the intermediate area 43.

[Sheet laminated structure of the connection part]

Next, with reference to FIG. 6, the structure of the sheet member etc. which comprise the connection part 40 (connection members 40A, 40B) is demonstrated. Fig. 6 is an enlarged display of the periphery of the rear connecting member 40B shown in Fig. 3. Although the structure of the rear connecting member 40B is described as an example below, the structure of the rear connecting member 40B described here can also be applied to the front connecting member 40A.

As shown in FIG. 6, the rear connection member 40B has a structure in which at least two members are laminated in the thickness direction. That is, in the example shown in FIG. 6, the rear side connection member 40B has the leak-proof sheet 51 and the outer surface nonwoven fabric sheet 52 attached to the non-skin-facing side.

The leak-proof sheet 51 is a liquid-impermeable sheet member, and is arranged for the purpose of preventing body fluids from leaking from the rear connecting member 40B. Similar to the aforementioned back sheet 33, the leakage prevention sheet 51 is preferably a plastic film such as polyethylene resin. In particular, in order to ensure the air permeability of the rear connecting member 40B, it is preferable to use a microporous polyethylene film formed with a plurality of 0.1 to 4 μm fine pores as the leakage prevention sheet 51. By forming the leak-proof sheet 51 with a sheet member having air permeability and liquid impermeability, it is possible to prevent the body fluid reaching the rear connecting member 40B from leaking, and it is possible to suppress the occurrence of dampness in this part.

The outer non-woven fabric sheet 52 is a sheet member mainly composed of non-woven fabric, and is formulated for the purpose of improving the feel of the non-skin-facing surface of the leak-proof sheet 51 Set. Although the non-woven fabric used here is not particularly limited, materials such as hot-air non-woven fabric, point fusion non-woven fabric, bonded non-woven fabric, air-flow non-woven fabric, melt-blown non-woven fabric, SMS non-woven fabric, SMMS non-woven fabric, etc. can be mentioned. Basically, any sheet member with liquid permeability and air permeability and good hand feeling can be used as the outer non-woven sheet 52.

As shown in FIG. 6, the outer nonwoven fabric sheet 52 extends in the longitudinal direction toward the waist opening 5 side, and covers the upper edge 51a of the leak-proof sheet 51. To be specifically described, the outer non-woven fabric sheet 52 has an upper extension portion 52a that extends beyond the upper end 51a of the leak-proof sheet 51 on the joint portion 44a of the inner region 44 of the rear connecting member 40B. In the example shown in FIG. 6, the outer surface nonwoven fabric sheet 52 is directly joined to the non-skin-facing surface of the back body exterior body 20 by this upper extension part 52a.

FIG. 6, in the longitudinal direction of the disposable diaper, the joint inner region 44 of the entire length of the line 44a to the symbol P ₁ represents, located joint 44a length leak-barrier sheet 51 of the symbols Q ₁ represents, out of non-woven sheet 52 extending over the side portion 52a of the symbols R ₁ represents a length of places. For example, the length P _{1 of the} joint portion 44a is preferably 15 mm or more, and it can be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. Furthermore, the joint length Q _{1 of the} leakage preventing sheet 51 is preferably 10 mm or more, and it can be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R ₁ of the upper extension portion 52a is preferably ₁ mm or more, and it can be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Moreover, the ratio (R ₁ /P ₁ ) of the length R ₁ of the upper extension portion 52a to the entire length P ₁ of the joint portion 44a is preferably 5% or more, and it can be set to 5 to 60%, 10 to 50%, and 30 to 60% is particularly good.

Furthermore, as shown in FIG. 6, the outer nonwoven fabric sheet 52 is extended in the longitudinal direction to the lower crotch 3 side, and the lower edge 51b of the leak-proof sheet 51 is covered. When specifically described, the outer non-woven fabric sheet 52 has a lower extension portion 52b that extends beyond the lower end 51b of the leak-proof sheet 51 to be attached to the joint portion 45a of the outer region 45 of the rear connecting member 40B. As shown in Figure 6 In the example of, the outer nonwoven fabric sheet 52 is directly joined to the non-skin-facing surface of the back body exterior body 20 at the lower extension portion 52b.

FIG. 6, in the longitudinal direction of the disposable diaper, the joint outer region 45 of the entire length of the line 45a of the symbol P ₂ denotes located joint 45a length leak-barrier sheet 51 of the symbol Q ₂ represents, out of non-woven The length of the extending portion 52b on the lower side of the sheet 52 is represented by the symbol R ₂ . For example, the length P _{2 of the} joint portion 45a is preferably 15 mm or more, and can be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. In addition, the joint length Q _{2 of the} leakage preventing sheet 51 is preferably 10 mm or more, and can be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R _{2 of the} lower extension 52b is preferably 1 mm or more, and can be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Further, the extension portion 52b of the lower side with respect to the length of R ₂ the entire length of the joint 45a of the P ratio (R ₂ / P _{2) 2} to 5% or more preferably, may be set to 5 to 60%, 10 to 50%, And 30 to 60% is particularly good.

In the example shown in FIG. 6, in the longitudinal direction of the disposable diaper, the outer nonwoven fabric sheet 52 extends beyond the leak-proof sheet 51 on both the waist opening 5 side and the crotch 3 side. However, in the longitudinal direction of the disposable diaper, the outer nonwoven fabric sheet 52 may extend beyond the leak-proof sheet 51 on at least one of the waist opening 5 side and the crotch portion 3. That is, the outer nonwoven fabric sheet 52 only needs to have at least one of the upper extension portion 52a and the lower extension portion 52b.

As described above, by extending the outer non-woven fabric sheet 52 beyond the leak-proof sheet 51 to cover its end edge, the leak-proof sheet 51 can be prevented from being exposed. Moreover, the outer non-woven fabric sheet 52 with a good hand feeling covers the end edges thereof, so that the hand feeling or appearance can be improved.

In addition, as shown in FIGS. 3 to 6, in this embodiment, each of the connecting members 40A, 40B on the front and rear sides of the disposable diaper preferably has one or more connecting parts arranged along the upward fold 41 Telescopic member 46. The connecting part telescopic member 46 is an elastic telescopic structure such as a thread-like elastic rubber. The article is arranged in the upward folded portion 41 in an extended state along the width direction of the disposable diaper. As described above, since each of the connecting members 40A, 40B is formed by laminating the leak-proof sheet 51 and the outer non-woven fabric sheet 52, the connecting portion stretchable member 46 only needs to be fixed between the leak-proof sheet 51 and the outer non-woven fabric sheet 52. By arranging the connecting portion telescopic member 46 along the upwardly folded portion 41, the contraction of the connecting portion telescopic member 46 makes it difficult for the intermediate region 43 of each connecting member 40A, 40B and the respective exterior bodies 10, 20 to be separated from each other. Create a gap. Therefore, the appearance of the diaper is improved, and the fit is also improved.

Furthermore, as shown in Figures 1 and 2, in each of the connecting members 40A, 40B, a plurality of tummy stretchable members 47 extending in the width direction are arranged at predetermined intervals in the longitudinal direction of the disposable diaper. . The lower abdomen stretchable member 47 is fixed to each connecting member 40A, 40B in a state extended in the width direction of the disposable diaper. However, the lower abdomen stretchable member 47 is not arranged in the center of each connecting member 40A, 40B in the width direction, or is partially cut, for example, in order not to exhibit stretchability. That is, the lower abdomen stretch members 47 are basically located on both sides in the width direction of the absorbent body 30. In addition, the lower abdomen stretchable member 47 may be partially overlapped on both ends of the absorptive main body 30 in the width direction. Each lower abdomen stretchable member 47 is the same as the aforementioned connecting portion stretchable member 46, as long as it is fixed between the leak-proof sheet 51 and the outer non-woven fabric sheet 52. When the lower abdomen stretchable member 47 is contracted, the connecting members 40A and 40B are flexed to form a plurality of tummy gathers (tummy gathers).

[First modification example]

Next, referring to Fig. 7, a first modification example of each connecting member 40A, 40B will be described. FIG. 7 is an enlarged view of the cross-sectional structure of the rear connecting member 40B, but the structure of the rear connecting member 40B described here is also applicable to the front connecting member 40A.

As shown in FIG. 7, the rear connecting member 40B has an inner surface non-woven fabric sheet 53 in addition to the configuration shown in FIG. 6 and the like. Inner non-woven sheet System 53 is a member attached to the skin-facing surface of the leak-proof sheet 51. The inner surface non-woven fabric sheet 53 is a sheet member mainly composed of non-woven fabric, and its arrangement purpose is to improve the skin touch of the leak-proof sheet 51 facing the skin. Although the non-woven fabric used here is not particularly limited, like the outer non-woven fabric sheet 52, for example, hot-air non-woven fabric, spot-fusion non-woven fabric, bonded non-woven fabric, air-flow non-woven fabric, melt-blown non-woven fabric, SMS non-woven fabric, SMMS non-woven fabric, etc. can be mentioned. Basically, the inner non-woven fabric sheet 53 uses a sheet member that is liquid-permeable and air-permeable and has a good skin touch. In the example shown in FIG. 7, the inner surface nonwoven fabric sheet 53 is directly joined to the non-skin-facing surface of the back body exterior body 20.

Similar to the aforementioned outer non-woven fabric sheet 52, the inner non-woven fabric sheet 53 extends in the longitudinal direction to the waist opening 5 side more than the leak-proof sheet 51, and covers the upper edge 51a of the leak-proof sheet 51. To be specifically described, the inner nonwoven fabric sheet 53 has an upper extension 53a that extends beyond the upper edge 51a of the leak-proof sheet 51 at the joining site 44a of the inner region 44 of the rear connecting member 40B. As described above, the outer non-woven fabric sheet 52 also has the upper extension 52a. Therefore, there is an overlapping area between the upper extension portion 53a of the inner surface nonwoven fabric sheet 53 and the upper extension portion 52a of the outer surface nonwoven fabric sheet 52, and the upper extension portions 52a, 53a of the two are joined to each other in this area. Regarding the upper extension portion 53a of the inner nonwoven fabric sheet 53, it is only necessary to extend the entire length P ₁ of the joint portion 44a of the inner region 44, the length Q ₁ of the leak-proof sheet 51 at the joint portion 44a, and the upper side of the inner nonwoven fabric sheet 53 the length of the portion 53a is set to R ₁ and the outer nonwoven sheet 52 to the same extent.

Furthermore, as with the aforementioned outer nonwoven fabric sheet 52, the inner nonwoven fabric sheet 53 extends in the longitudinal direction to the crotch 3 side more than the leakage prevention sheet 51, and covers the lower edge 51b of the leakage prevention sheet 51. When specifically described, the inner non-woven fabric sheet 53 has a lower extension 53b that extends beyond the lower edge 51b of the leak-proof sheet 51 on the joining portion 45a of the outer region 45 of the rear connecting member 40B. As described above, the outer nonwoven fabric sheet 52 also has a lower extension 52b. Therefore, there is an overlap area between the lower extension portion 53b of the inner nonwoven fabric sheet 53 and the lower extension portion 52b of the outer nonwoven fabric sheet 52, and in this area, the lower extension portions 52b and 53b are joined to each other. Regarding the lower extension 53b of the inner non-woven fabric sheet 53, the entire length P ₂ of the joint portion 45a of the outer region 45, the length Q ₂ of the leak-proof sheet 51 located at the joint portion 45a, and the inner non-woven fabric sheet 53 The length R ₂ of the side extension 53b may be set to the same degree as the outer surface nonwoven fabric sheet 52 described above.

[Second modification example]

Next, referring to Fig. 8, a second modification example of each connecting member 40A, 40B will be described. In addition, the structure of the rear side connecting member 40B described here is also applicable to the front side connecting member 40A. As shown in Fig. 8, the rear connecting member 40B has an outer non-woven fabric sheet 52 bonded to the leak-proof sheet 51 and its non-skin-facing surface. However, in the example of FIG. 8, the outer nonwoven fabric sheet 52 is attached to the non-skin-facing side of the leak-proof sheet 51 by turning back the upper edge 51a and the lower end 51b of the leak-proof sheet 51. In this way, the outer non-woven fabric sheet 52 is configured to cover not only the non-skin-facing surface of the leak-proof sheet 51 but also the skin-facing surface.

In addition, in the example of Fig. 8, the upper extension portion 52a of the outer non-woven fabric sheet 52 folded back on the upper edge 51a of the anti-leak sheet 51 has an extension length reaching the non-skin-facing surface of the absorbent body 30, and is joined to the absorbent The non-skin-facing side of the sexual body 30. In this way, by extending the upper side extension 52a of the outer nonwoven sheet 52 to the non-skin-facing surface of the absorbent body 30, the outer nonwoven sheet 52 can prevent the leakage prevention sheet 51 from contacting the wearer's skin. That is, in the outer surface nonwoven fabric sheet 52, the extension part folded back to the non-skin-facing surface side of the absorbent main body 30 is responsible for the function of the inner surface nonwoven fabric sheet 53 shown in the first modification (FIG. 7). In the second modification (Figure 8), since the outer non-woven fabric sheet 52 and the inner non-woven fabric sheet 53 can be configured as an integral sheet member, compared with the first modification (Figure 7), the number of connecting members can be reduced. 40A and 40B have the advantages of the number of objects.

[The third modification example]

Next, referring to Fig. 9, a third modification of the disposable diaper will be described. In the third modification, the intermediate area 43, the inner area 44, and the outer area of each connecting member are overlapped in the thickness direction while the connecting members 40A and 40B are folded along the upward folded portion 41 and the downward folded portion 42 The side piece portions 4 located on both sides in the width direction of the portion 45 have notches 4a. A notch 4a is formed in the side sealing portion 4 of the overlapping portion of the middle region 43, the inner region 44, and the outer region 45, thereby forming a hole that communicates with the inside of the diaper from the notch 4a. Since there is a hole connected to the inside, the air permeability inside the diaper can be improved in the hole part. Furthermore, a finger can be inserted into the notch 4a. Therefore, in the wearing state of the disposable diaper, if a finger is inserted into the notch 4a and the joining area 43a of each connecting member 40A, 40B is peeled off, the live gathers are relatively easy to spread. In addition, although the underwear-type disposable diaper 100 shown in Fig. 9 peels off the side sealing portion 4 when discarding, at this time, since the finger can be inserted into the notch 4a, the side sealing portion 4 at the time of discarding The peeling operation is easier.

In the above description of the present application, in order to express the content of the present invention, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the above-mentioned embodiments, and should include various self-evident modifications or improvements that can be easily imagined by those skilled in the art based on the matters described in the specification of this case.

[Industrial availability]

The present invention can be applied to disposable diapers such as underwear type or belt type. Therefore, the present invention is suitable for use in disposable diaper manufacturing.

10: Predecessor exterior body

11: inner film

12: External film

13: Waist telescopic member

20: Back body exterior body

21: inner film

22: External film

23: Waist telescopic member

30: Absorbent body

31: Absorber

32: loading

33: back piece

34: cover sheet

40: Connection

40A: Front connecting member

40B: Rear connecting member

41: Fold up

42: Fold down

43: middle area

44: Inside area

44a: Joint

45: Outer area

45a: Joint

46: Joint telescopic member

51: Leakproof sheet

51a: upper edge

51b: lower edge

52: Outer non-woven piece

100: disposable diapers

Claims (4)

A disposable diaper, comprising: a front outer body (10) located on the abdomen side of the wearer; a back body outer body (20) located on the back side of the wearer; and an absorbent body (30) located on the wearer’s back side The crotch part of the user, wherein: the absorbent body (30) is connected via a connecting part (40) having an upward fold (41) and a downward fold (42) extending in the width direction of the disposable diaper In the exterior body of either or both of the front body exterior body (10) and the rear body exterior body (20), the connecting portion (40) is an anti-leakage sheet (51) and is located at the The outer non-woven fabric sheet (52) of the non-skin facing side of the slip sheet (51) is laminated in the thickness direction, and the outer non-woven fabric sheet (52) extends in the length direction of the disposable diaper beyond the leak-proof sheet (51) The edge of either or both of the upper edge (51a) and the lower edge (51b). The disposable diaper described in item 1 of the scope of patent application, wherein the connecting portion (40) has an intermediate area (43) located between the upwardly folded portion (41) and the downwardly folded portion (42), wherein , The middle area (43) has a joining area (43a), and the joining area (43a) is attached to the connecting portion (40) when the above-mentioned upward-folding portion (41) and the aforementioned downward-folding portion (42) are in a folded state, It can be peeled or non-peelably joined to either or both of the part facing the skin-facing side and the part facing the non-skin-facing side of the intermediate region (43). The disposable diaper described in item 1 or 2 of the scope of patent application, wherein the connecting portion (40) is further laminated in the thickness direction with an inner non-woven fabric sheet (53) located on the skin-facing side of the leak-proof sheet (51) ), wherein the inner non-woven fabric sheet (53) extends in the longitudinal direction of the disposable diaper beyond both or either of the upper edge (51a) and the lower edge (51b) of the leak-proof sheet (51) edge. The disposable diaper described in item 1 or 2 of the scope of patent application, wherein the outer non-woven fabric sheet (52) exceeds both or both of the upper edge (51a) and the lower edge (51b) of the leak-proof sheet (51) Either the edge is folded back to the skin-facing side of the leakage prevention sheet (51).

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