TW201733549A - Disposable diaper - Google Patents

Abstract

To increase ventilation in an area where a tuck is formed in a disposable diaper separated into a front panel outer body, a rear panel outer body, and an absorbent body. A disposable diaper equipped with a front panel outer body (10), a rear panel outer body (20), and an absorbent body (30), wherein: the absorbent body (30) is connected, via a connecting part (40) having a peak fold and a valley fold that extend in the widthwise direction of the disposable diaper, to the front panel outer body (10) and/or the rear panel outer body (20); and the connecting part (40) has a pattern (49) printed thereon.

Description

Disposable diaper

The present invention relates to a disposable diaper that is worn on the wearer's lower jaw to absorb and retain liquid such as urine.

Traditionally, disposable diapers having a plurality of live pleats formed in the back body are well known. For example, in the disposable diaper disclosed in Patent Document 1, the pleats are formed by folding the sheet members constituting the back body along the upward fold line and the downward fold line. The pleats can be deployed in the up and down direction in conjunction with the extension of the wearer's back when the wearer leans forward. Therefore, it is possible to prevent the back body of the diaper from being displaced toward the wearer's lower jaw and being relaxed in the vicinity of the lower jaw, and it is possible to prevent the wearer's back from being exposed due to insufficient length of the rear identity, or to abandon A gap occurs between the diaper and the wearer's back.

Prior technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-239555

As described above, by forming a plurality of active pleats in the back body of the disposable diaper, the diaper can be adjusted to conform to the stretching of the wearer's body, thereby improving the fit or wearing feeling of the diaper. However, since the pleats are formed by folding the sheet members constituting the back body, the air permeability of the overlapping portions of the sheet members is lowered, so that moisture is retained between the wearer's skin and the diaper, and is worn by the wet suffocation. User Bringing a sense of unhappiness. Further, when the number of the live pleats is plural, there is a problem that the air permeability is remarkably lowered.

Therefore, the object of the present invention is to improve the air permeability of the active pleat formation portion in the disposable diaper which is separated into the front body exterior body, the rear body exterior body, and the absorbent body.

This invention relates to a disposable diaper. The disposable diaper of the present invention comprises a front outer body 10 on the wearer's abdomen side, a rear body outer body 20 on the wearer's back side, and an absorbent body 30 on the wearer's lower jaw. The present invention is applicable to any of a pant type disposable diaper and a belt type disposable diaper. The pull-on disposable diaper, the front outer body 10 and the rear outer body 20 are joined to each other by a side sealing portion provided on the right and left sides in the width direction of the disposable diaper, and are connected in a substantially annular shape and formed to be positioned. The wearer surrounds the waist opening portion of the tummy portion and the type of the leg opening portion of the wearer surrounding the two leg portions. In the belt-type disposable diaper, a pair of left and right fixing belts are attached to both end portions in the width direction of the outer casing of the front outer casing 10 and the rear outer casing 20, and the fixing belt is fixed by A type that is fixed to the outer casing of the other side and is attached to the lower jaw of the wearer.

The absorbent main body 30 is coupled to the outer casing of either or both of the front outer casing 10 and the rear outer casing 20 via the connecting portion 40, and the connecting portion 40 has a width extending in the width direction of the disposable diaper. The upper folded portion 41 and the downward folded portion 42. The term "upwardly folded portion" as used herein refers to a folded portion that is convex upward in the wearing state, and the "downwardly folded portion" refers to a folded portion that is convex downward in the wearing state. Further, the connecting portion 40 may be a separate member separated from the front outer body 10, the rear body outer body 20, and the absorbent body 30, or may be a member integrated with the absorbent body 30, or may be A member that is integral with the outer body. In addition, in the present specification, the term "outer body" means either or both of the front body exterior body 10 and the rear body exterior body 20.

According to the above configuration, by the absorbent body 30 and the exterior When the connecting portion 40 is provided between the bodies 10 and 20 and the pleats are formed in the connecting portion 40, the spreadability of the pleats is improved as compared with the case where the pleats are formed, for example, in the outer casings 10 and 20 themselves. That is, when the absorbent main body 30 is stretched, the connecting portion 40 expands the active pleats in accordance with the stretching operation, and it can be said that the active pleats are easily spread. Moreover, if the spreadability of the active pleats is improved, a space can be created between the live pleats and the wearer's skin, and the skin can be dried, and the live pleats are pushed by the clothes worn by the wearer or the like. It will play the role of a pump, and it is also expected to exert the effect of releasing moisture that remains inside the diaper.

In the present invention, the pattern 49 is printed on the joint portion. Pattern 49 contains text, graphics, symbols, patterns, or colors or a combination of these characters, graphics, symbols, patterns, or colors. In the disposable diaper of the present invention, the joint portion 40 is preferably a member separate from the absorbent body 30. In this case, the connecting portion 40 further includes an outer region 45 including the joint portion 45a, which extends from the upwardly folded portion 41 toward the absorbent body 30 side, and is joined to the non-facing surface side of the absorbent body 30. In this case, the pattern 49 is preferably printed on the non-facing surface of the leakage preventing sheet 51 of the outer region 45.

According to the above configuration, the pattern 49 printed on the outer side region 45 of the joint portion 40 can be easily recognized from the outside. Therefore, the non-facing surface of the outer region 45 is suitable for printing a pattern 49 such as a character. When the pattern 49 such as a character is printed, a plastic film or the like is generally prepared in addition to the leakage preventing sheet 51, and the pattern is printed on the upper surface. On the other hand, for example, by printing the pattern 49 on the non-facing surface of the leakage preventing sheet 51 of the outer region 45, it is not necessary to separately prepare a plastic film for pattern printing, so that the number of constituent articles of the disposable diaper can be reduced. Further, when a plastic film for pattern printing is separately provided, the number of sheets in which the sheet members are stacked increases, and there is a concern that air permeability or flexibility is lowered. According to the above configuration, this problem can be solved.

Further, in the disposable diaper of the present invention, the joint portion 40 has an intermediate portion 43 between the upwardly folded portion 41 and the downwardly folded portion 42. Moreover, the skin facing surface 43c of the intermediate portion 43 and the skin facing surface At least a part of either or both of the opposing facing portions 44b of the 43c is provided with a discriminating means 48 that can be distinguished from other portions. The term "discrimination means" as used herein includes characters, figures, symbols, patterns, concave and convex patterns, materials different from the sheet members constituting the outer casing, or colors different from the sheet members constituting the outer casing, or a combination of these. .

In the present invention, by providing the discrimination means 48, the wearer or the assisting person who assists the wearer to put on the diaper can understand the unfolded state of the live pleats. In other words, in the disposable diaper according to the present invention, the facing surface 44b facing the skin surface 43c and/or the surface (43a facing the skin surface 43c) of the intermediate portion 43 of the connecting portion 40 is attached to the above-described configuration. Means 48. The skin-facing surface 43c of the intermediate portion 43 or the facing portion 44b thereof is a portion that cannot be recognized from the outside in the folded-folded state (at least an illegible portion), and the state is recognized only after the active pleat is unfolded (at least It is easy to recognize before the active pleats are unfolded). Therefore, by attaching the discrimination means 48 to the skin-facing surface 43c of the intermediate portion 43 or the facing portion 44b thereof, the wearer or the assisting person can use the discrimination means 48 as a mark to understand the expanded state of the live pleats.

Further, it is necessary to prevent leakage of excrement such as urine or soft stool from the joint portion 40. Therefore, in the present invention, the connecting portion 40 preferably has a structure in which the leakage preventing sheet 51 and the outer sheet 52 on the non-facing surface side of the leakage preventing sheet 51 are laminated in the thickness direction. The leakage preventing sheet 51 preferably has a sheet member that is liquid-impermeable and air-permeable. The outer sheet 52 is mainly composed of a non-woven fabric or may be composed only of a non-woven fabric. By including the leakage preventing sheet 51 in the connecting portion 40, leakage of excrement can be prevented. Further, by covering the non-facing surface side of the leakage preventing sheet 51 with the outer sheet 52, the feeling of the connecting portion 40 can be improved.

According to the above configuration, when the connection portion 40 is configured to include the leakage preventing sheet 51 and the outer sheet 52, the surface facing surface 43c of the intermediate portion 43 or the facing portion 44 facing the skin facing surface 43c is distinguished. It is preferable that the 48-series is attached to the non-facing surface of the leakage preventing sheet 51. The leakage preventing sheet 51 is composed of a plastic film, and is distinguished by being attached to the plastic film. The means 48 allows the discrimination means 48 to be clearly displayed. Further, since the sheet member attached to the non-facing surface side of the leakage preventing sheet 51 is an outer sheet 52 made of a non-woven fabric, the wearer or the assister can recognize the difference attached to the leakage preventing sheet 51 through the outer sheet 52. Means 48.

The joint portion 40 has at least an intermediate portion 43 between the upwardly folded portion 41 and the downwardly folded portion 42. In the state in which the above-mentioned upwardly folded portion 41 and the downwardly folded portion 42 are folded, the intermediate portion 43 has a joint portion 43a which is detachably or non-detachably joined to the intermediate portion 43. A part facing either or both of the surface facing the skin surface side and the surface facing the skin side surface. Further, the intermediate portion 43 is bonded not only to the portion facing the skin surface side but also to the portion facing the skin surface side in the joint region 43a. Moreover, the joint region 43a may cover the entire region of the intermediate portion 43, but in this case, the joint region 43a releasably joins the intermediate portion 43 to its facing portion (i.e., temporary joint). Further, the joint region 43a may also join the intermediate portion 43 to the facing portion thereof in a non-releasable manner, but in this case, the joint region 43a is partially disposed in the intermediate portion 43. Further, when the joint region 43a is provided at a portion of the intermediate portion 43, the other regions are referred to as the non-joining region 43b.

Further, in the pant-type disposable diaper, the so-called side seal portion 4 functions as a joint region 43a as referred to herein.

According to the present invention, in the disposable diaper which is separated into the front body exterior body, the rear body exterior body, and the absorbent body, the air permeability of the active pleat formation portion can be improved.

1‧‧‧Predecessor

2‧‧‧ Back body

3‧‧‧Lower Department

4‧‧‧Side sealing department

5‧‧‧Lumbar opening

6‧‧‧ leg opening

10‧‧‧Predecessor body

11‧‧‧Inner film

12‧‧‧ External film

13‧‧‧Lumbar telescopic member

20‧‧‧Back body

21‧‧‧ inner film

22‧‧‧ outside film

23‧‧‧Lumbar telescopic member

30‧‧‧Absorbable ontology

31‧‧‧Acceptor

32‧‧‧Upper film

33‧‧‧ Back film

33a‧‧‧ edge

33b‧‧‧ areas without back sheets

34‧‧‧ Cover

35‧‧‧ side film

36‧‧‧Three-dimensional pleated telescopic members

37‧‧‧ leg flexure members

40‧‧‧Connecting Department

40A‧‧‧ front side joint member

40B‧‧‧Back side joint member

41‧‧‧Upward folding

42‧‧‧Folding section

43‧‧‧Intermediate area

43a‧‧‧ joint area

43b‧‧‧non-joined area

43c‧‧‧ facing the skin

44‧‧‧ inside area

44a‧‧‧ joints

44b‧‧‧ facing parts

45‧‧‧Outer area

45a‧‧‧ joints

46‧‧‧Connecting section telescopic members

47‧‧‧lower abdomen expansion member

48‧‧‧ Identifying means

49‧‧‧ pattern

51‧‧‧ leakproof film

51a‧‧‧Upper edge

51b‧‧‧Lower edge

52‧‧‧Outer film

52a‧‧‧Upper extension

52b‧‧‧lower extension

53‧‧‧Inside film

53a‧‧‧Upper extension

53b‧‧‧lower extension

54‧‧‧Inside leakproof film

100‧‧‧Disposable diapers

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

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

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

Fig. 4 is a longitudinal sectional view showing a state in which a live pleat is unfolded from the state shown in Fig. 3.

Fig. 5 is an external perspective view showing a state in which a live pleat is unfolded from the state shown in Fig. 1.

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

Fig. 7 is a schematic view showing an example of a means for distinguishing and a pattern attached to the connecting member.

Fig. 8 is a cross-sectional view showing a first modification of the disposable diaper according to the present invention corresponding to Fig. 6.

Fig. 9 is an external perspective view showing a second modification of the disposable diaper according to the present invention corresponding to Fig. 6.

[Embodiment of the Invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and may be appropriately changed from the following aspects to those skilled in the art.

In the present specification, the term "longitudinal direction" refers to the front-rear direction of the disposable diaper, and refers to the direction in which the front and back of the disposable diaper are connected. Further, the term "width direction" means a direction orthogonal to the longitudinal direction on a plane. In the illustration of the present case, the "longitudinal direction" is represented by the Y axis, and the "width direction" is represented by the X axis.

In the present specification, the term "face to face" refers to the face of the wearer's skin in the wearing state of the disposable diaper. Again, what is called "non-oriented "Skin surface" refers to the surface of the disposable diaper that does not face the wearer's skin, that is, the side opposite to the skin surface.

In the present specification, the term "A to B" means "A or more B or less".

[1. Outer body and absorbent body]

Fig. 1 is a perspective view showing the appearance of a disposable diaper according to an embodiment of the present invention. In addition, Fig. 2 is a development view of the disposable diaper shown in Fig. 1, which shows a state in which the diaper is viewed from the side facing the skin surface. In addition, Fig. 3 is a longitudinal sectional view of the disposable diaper shown in Fig. 1, which is a cross-sectional structure taken along the line III-III shown in Fig. 1. In the present specification, the description of the present invention will be made by taking the case where the present invention is applied to a pant-type disposable diaper. However, the present invention is not limited to the use of a pant type disposable diaper, and can also be applied to a belt type disposable diaper.

As shown in FIGS. 1 to 3, the disposable diaper 100 of the present invention is divided into a front body 1 that contacts the abdomen of the wearer, a back body 2 that contacts the back of the wearer, and a second body in the longitudinal direction (Y-axis direction). The lower jaw portion 3 between the front body 1 and the back body 2. In the present embodiment, the front body exterior body 10 is located in the front body 1, and the rear body exterior body 20 is located in the back body 2. Further, the absorbent body 30 is located at the lower jaw portion 3. The absorbent body 30 extends in the longitudinal direction by joining the front body 1 and the back body 2 with the crotch portion 3 as a center. Therefore, in the absorbent body 30, the end portion on the side of the front body 1 is overlapped with the front outer body 10 in the thickness direction. On the other hand, the end portion on the side of the back body 2 is overlapped with the rear 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 constituted by separate bodies. In the present embodiment, each of the exterior bodies 10 and 20 is formed in a substantially rectangular shape having a long width in a plan view. Further, the absorbent body 30 is formed in a substantially rectangular shape having a long longitudinal direction in plan view. However, the shape of each of the exterior bodies 10 and 20 and the absorbent body 30 is not limited to the illustrated form, and can be appropriately changed within a range in which the function of the present invention can be exerted.

Further, the front end outer casing 10 and the left and right end portions of the rear outer casing 20 in the width direction (X-axis direction) are provided with side surface sealing portions 4. In the side seal portion 4, the portions facing the left and right ends of the front outer casing 10 and the rear outer casing 20 are joined to each other. The bonding method may be, for example, a conventional method such as heat sealing, ultrasonic sealing, or adhesion using a hot melt adhesive or the like. As shown in Fig. 1, the front outer casing 10 and the rear outer casing 20 are joined to each other at the side sealing portion 4, and the outer casings 10 and 20 are connected in a ring shape. Further, the waist opening portion 5 is defined by the front outer casing 10 and the upper edge of the rear body exterior body 20. Further, from the lower end portion of the front outer casing 10 to the lower end portion of the rear outer casing 20, the absorbent main body 30 is disposed to be laid. Therefore, the right and left leg opening portions 6 can be defined by the left and right side edges of the absorbent body 30 and the lower edges of the outer casings 10, 20. The wearer can wear the pant-type disposable diaper 100 by penetrating the two legs from the waist opening portion 5 and extending one foot from the left and right leg opening portions 6.

As shown in Fig. 3, each of the exterior bodies 10 and 20 includes: inner sheets 11 and 21 on the skin-facing side; outer sheets 12 and 22 on the non-facing side; and between the inner and outer sheets One or more of the waist elastic members 13, 23. When the plurality of the waist elastic members 13 and 23 are plural, they are arranged to be spaced apart from each other by a predetermined interval in the longitudinal direction. Each of the waist elastic members 13 and 23 is sandwiched and fixed between the inner sheets 11 and 21 and the outer sheets 12 and 22 while being stretched in the diaper width direction. For example, a hot melt adhesive or the like is directly applied to the stretched waist elastic members 13 and 23, and the member coated with the adhesive is disposed on the inner sheets 11, 21 and the outer sheets 12, 22. Just between. In this way, when the waist elastic members 13 and 23 are contracted, the inner sheets 11, 21 and the outer sheets 12, 22 are wrinkled to form a plurality of fine wrinkles (waist gathers). The number of the arrangement of the waist elastic members 13 and 23 is not particularly limited, but is preferably, for example, 3 to 20 or 4 to 15.

The sheet member forming the inner sheets 11 and 21 and the outer sheets 12 and 22 can be made of a conventional product, and is not limited to a non-woven fabric having a good touch. The winner is better. Examples of the non-woven fabric include hot air non-woven fabric, point fusion non-woven fabric, non-woven fabric nonwoven fabric, air-flow non-woven fabric, melt-blown non-woven fabric, SMS non-woven fabric, and SMMS non-woven fabric. Further, the waist elastic members 13 and 23 can utilize a conventional elastically stretchable member, but are preferably applied, for example, as a thread-like elastic rubber. As such a rubber material, a styrene rubber, an olefin rubber, an urethane rubber, an ester rubber, a polyurethane, a polyethylene, a polystyrene, a styrene-butadiene, an anthrone can be used. , polyester and other materials.

Further, as shown in Fig. 3, the outer sheets 12, 22 may be extended further in the longitudinal direction than the inner sheets 11, 21, and the extended portion may be folded back at the edge of the waist opening portion 5 It faces the skin side and is joined to the skin facing surface of the inner sheets 11, 21. In this way, the skin of the waist opening 5 can be softened.

As shown in Fig. 3, the absorbent body 30 basically includes an absorbent body 31 for absorbing and retaining body fluid, a liquid-permeable top sheet 32 covering the skin-facing surface of the absorbent body 31, and a coated absorbent body 31. It is not a liquid-impermeable back sheet 33 facing the skin surface. The upper piece 32 and the back piece 33 are joined to each other at the peripheral edge portion of the absorber 31. The bodily fluid discharged from the wearer's lower jaw passes through the upper sheet 32 to the absorbent body 31, and is prevented from leaking to the outside by the back sheet 33.

The absorber 31 is an element for absorbing body fluid such as urine and holding the absorbed body fluid. The absorber 31 is usually formed by coating an absorbent material with a chip coated on a face paper or the like. The absorbent material constituting the absorbent body 31 can be a conventional material. The absorbent material may be, for example, a fluff pulp, a superabsorbent polymer, or a hydrophilic sheet. In addition, the absorbent material may be used alone or in combination of two or more kinds in the fluff pulp, the superabsorbent polymer, or the hydrophilic sheet. Absorbent materials are generally useful as mat-like articles that form a single or multiple layers. The shape of the absorbent body 31 can be appropriately designed in accordance with the shape, size, and use of the disposable diaper. For example, the shape of the absorber 31 can be made into an hourglass type as shown in Fig. 2, and it can also be made into a rectangular shape, a circular shape, or a gourd type which is generally used.

The upper sheet 32 is an element that directly contacts the skin of the wearer's lower jaw, thereby allowing body fluid such as urine to penetrate into the absorbent body 31. Therefore, the upper sheet 32 is made of a highly flexible liquid permeable material. In addition, in the present specification, the term "liquid permeability" means, for example, a property in which water is permeable when less than 1 minute of pouring water of 5 ml of normal temperature on a sample under standard atmospheric pressure. Further, examples of the liquid permeable material constituting the top sheet 32 are woven fabric, non-woven fabric, or porous film. Further, for example, a fiber of a thermoplastic resin such as polypropylene or polyethylene, polyester, or nylon may be subjected to a hydrophilization treatment to obtain a nonwoven fabric.

The back sheet 33 is an element that prevents body fluid that has passed through the upper sheet 32 and is absorbed by the absorber 31 from leaking to the outside. Therefore, the back sheet 33 is composed of a liquid-impermeable material. In the present specification, the term "liquid-impermeable property" means, for example, a property in which water is not impregnated even when subjected to a bath of 5 ml of normal temperature at a standard atmospheric pressure for 1 minute or more. An example of the liquid-impermeable material constituting the back sheet 33 is a plastic film made of a polyethylene resin or the like. In particular, the back sheet 33 is preferably a microporous polyethylene film formed with a plurality of fine pores of 0.1 to 4 μm.

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

Further, in addition to the above configuration, the absorbent body 30 further has members for constituting the three-dimensional gathers. The three-dimensional pleats are a pair of side panels 35 disposed along the left and right side edges of the absorbent body 31 and having water repellency, and one or more three-dimensional pleated telescopic members disposed at the inner end edges of the side panels 35 in the width direction. 36 constitutes. The side panel 35 has a fixing portion that is fixed to the skin-facing surface of the upper sheet 32 in the longitudinal direction, and is located in the width direction. The portion is further inside and is not fixed to the free end of the upper sheet 32. Further, the free end portion of the side panel 35 is fixed to the three-dimensional gather elastic member 36 in an elongated state in the longitudinal direction. Therefore, when the three-dimensional pleated telescopic member 36 is contracted, the free end portion of the side panel 35 is erected to form a three-dimensional gather due to its contraction force. The three-dimensional gathers formed in this manner are erected along both side edges of the absorbent body 31, and function as a leakage preventing wall for preventing lateral leakage of body fluid excreted by the wearer.

Further, in addition to the above configuration, the absorbent body 30 further has a leg stretch member 37 along the left and right side edges in the width direction of the absorbent body 30. The leg stretchable member 37 is fixed to the non-facing surface of the side panel 35, for example, in a state of being elongated in the longitudinal direction. When the leg stretch member 37 is contracted, the side panel 35 is wrinkled to form a plurality of fine pleats (leg gathers).

[Link Department]

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

Further, as shown in the cross-sectional view of Fig. 3, in the present embodiment, the front side connecting member 40A, the front body exterior body 10, and the absorbent body 30 are separate body members. Similarly, the rear side connecting member 40B, the rear body outer body 20, and the absorbent body 30 are also separate body members. However, although not shown in the drawings, the front side connecting member 40A (the 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 body 30. Similarly, the rear side connecting member 40B (link The portion 40) may be formed as an integral member with the rear body exterior body 20, or may be formed as an integral member with the absorbent body 30.

As shown in FIG. 2 and FIG. 3, the respective connecting members 40A and 40B on the front side and the rear side are disposed on the non-facing surface side of each of the exterior bodies 10 and 20 and the absorbent main body 30, and are formed in the width direction. Each of the exterior bodies 10 and 20 has substantially the same width. In the present embodiment, each of the connecting members 40A and 40B is formed in a substantially rectangular shape that is long in the width direction in plan view. Each of the connecting members 40A and 40B overlaps with a part of each of the exterior bodies 10 and 20 in the longitudinal direction, and the both ends of the connecting members 40A and 40B in the width direction are applied to the portions other than the overlapping portion. Side sealing. In other words, the left and right end portions in the width direction of each of the connecting members 40A and 40B are provided with side sealing portions 4 at portions other than the outer casings 10 and 20 and the overlapping portions. Further, in the both end portions in the width direction of each of the exterior bodies 10 and 20, portions other than the respective connecting members 40A and 40B and the overlapping portion are used as the side sealing portion 4, and the front side connecting member 40A and the rear side are provided. The connecting member 40B is joined to the right and left side sealing portions 4 to form a pant type.

As shown in Fig. 3, each of the connecting members 40A and 40B is folded into a substantially N-shaped cross section, and the upper surface of each of the connecting members 40A and 40B is joined to the outer casings 10 and 20 in the region facing the skin surface side. On the lower end of each of the connecting members 40A and 40B, the region facing the skin surface side is joined to the absorbent body 30. Specifically, the connecting members 40A and 40B have an upwardly folded portion 41 that is convex upward in the wearing state, and a downwardly folded portion 42 that is convex downward in the wearing state. In the present embodiment, when the upwardly folded portion 41 is compared with the downwardly folded portion 42, the opposing portion is formed, the upwardly folded portion 41 is positioned on the non-facing surface side, and the downwardly folded portion 42 is positioned on the skin facing side. The upwardly folded portion 41 and the downwardly folded portion 42 linearly extend in the width direction of each of the coupling members 40A and 40B. Therefore, by folding along the upwardly folded portion 41 and the folded down portion 42, the respective connecting members 40A and 40B have a substantially N-shaped cross section, and are formed to include a portion laminated in three layers. In the case of this case, it can be along the upward fold The structure of each of the coupling members 40A and 40B in which the 41 and the folded-down portion 42 are folded is referred to as "live pleats". In the present embodiment, each of the connecting members 40A and 40B has a substantially N-shaped cross section. However, the present invention is not limited thereto, and may have a structure in which the cross section is substantially inverted N-shaped or has a plurality of pleats.

Moreover, as shown in FIG. 3, each of the connection members 40A and 40B is divided into the intermediate portion 43, the inner region 44, and the outer region 45 with the upwardly folded portion 41 and the downwardly folded portion 42 as boundary lines. The intermediate portion 43 is located in a region between the upwardly folded portion 41 and the downwardly folded portion 42. Further, the inner region 44 extends from the downwardly folded portion 42 to the outer casings 10 and 20 to the upper side, and has a region joined to the non-surface-facing joint portion 44a of the outer casing. Further, in the example of Fig. 3, the entire region of the inner region 44 is formed as the joint portion 44a, but the inner region 44 may be joined to each of the outer casings 10, 20 by at least a portion. Further, the outer region 45 is a region that extends from the upwardly folded portion 41 toward the absorbent body 30 side and has a joint portion 45a that is joined to the non-facing surface side of the absorbent body 30. Further, in the example of Fig. 3, the outer region 45 is a portion of the lower end side (the lower jaw side) as the joint portion 45a, but the outer region 45 may be joined to the absorbent body 30 over the entire area. Each of the joint portions 44a and 45a described herein 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 of the connecting members 40A and 40B is joined to the non-facing surface of the lower end portion of each of the exterior bodies 10 and 20 in the longitudinal direction. Further, the outer region 45 of each of the coupling members 40A and 40B is joined to the non-facing surface of the upper end portion of the absorbent body 30 in the longitudinal direction. In this manner, each of the connecting members 40A and 40B functions to connect the outer casings 10 and 20 and the absorbent body 30. Here, an example in which the inner region 44 of each of the coupling members 40A and 40B is joined to the lower end side of each of the exterior bodies 10 and 20 is shown. However, the inner region 44 may be joined to the upper end sides of the outer casings 10, 20. The inner region 44 is to be joined to the non-facing surface of each of the outer casings 10 and 20, and is freely designed to some extent.

In addition, referring back to FIG. 2, each of the connecting members 40A and 40B is folded in a state in which the upwardly folded portion 41 and the folded down portion 42 are folded. In this state, the intermediate portion 43 has at least a portion of the entire width direction region having the joint portion 43a which is releasably joined to the portion of the intermediate portion 43 facing the skin-facing side. Further, in the example shown in Fig. 2, the joint region 43a is partially formed in the intermediate portion 43, and a portion other than the portion is used as the non-joining region 43b. For example, when the description is made with reference to the example of Fig. 3, the inner region 44 is located on the skin-facing side of the intermediate region 43, and the intermediate region 43 is joined to the inner region 44 at least in the joint region 43a shown in Fig. 2 . Further, in the joint region 43a, the intermediate portion 43 may be substituted for the outer region 45 or the absorbent body 30 on the non-facing side thereof, or the intermediate portion 43 may be joined together with the inner region 44. The outer region 45 facing the skin side or the absorbent body 30. In this manner, in the joint region 43a, each of the joint members 40A, 40B is fixed in a folded state to restrict inadvertent unfolding thereof. By separating the joint region 43a, the joint members 40A and 40B can be developed. and also. Fig. 3 is a longitudinal sectional view showing a portion of the non-joining region 43b.

In Fig. 2, a mesh bottom is schematically applied to the joint region 43a for display. In the example shown here, the joint region 43a is disposed in a region in which the respective joint members 40A and 40B and the exterior bodies 10 and 20 are overlapped in the thickness direction, and the joint region 43a is provided in the region where the absorbent body 30 is located. The left and right sides of the width direction do not overlap with the absorbent body 30. That is, in the plan view, each of the exterior bodies (10, 20), the respective connection members (40A, 40B), and the overlapping portion of the absorbent body 30 in the longitudinal direction range is the non-joining region 43b. In this manner, the joint region 43a can also be defined as a region having a certain width in the width direction in a range not overlapping the absorbent body 30. However, in the pull-on diaper, the side seal portion 4 itself functions as the joint region 43a. Therefore, in the pull-on diaper, it is not necessary to use the hot-melt adhesive or the like in addition to the side seal portion 4 to connect the joint member 40A, 40B is joined to each of the exterior bodies 10, 20. That is, the joint region 43a displayed as the bottom of the mesh in Fig. 2 can be omitted.

According to the above configuration, the joint portion 40 is provided between the absorbent body 30 and the exterior bodies 10 and 20 by separate body members to form the pleats, and the spreadability of the pleats is improved. That is, when the absorbent main body 30 is stretched, the connecting portion 40 expands the active pleats in accordance with the movement, so that it can be said that the active pleats are easily spread. Then, when the pleats are unfolded, the pleats can be played by clothes worn by the wearer, etc., and the functions of the pleats can be exerted, and the effect of discharging the moisture remaining in the diaper can be expected. Further, when the outer casings 10 and 20 are connected to the absorbent main body 30 by the respective connecting members 40A and 40B, when the respective connecting members 40A and 40B constituting the flaps are unfolded, the outer casings 10 and 20 are caused to be The absorbent body 30 is separated in the longitudinal direction and is elongated toward the longitudinal direction of the disposable diaper. In the fourth and fifth figures, the respective connecting members 40A and 40B are developed to expand the space defined by the connecting members, and the outer casings 10 and 20 are separated from the absorbent body 30. In this manner, by forming a structure in which the pleats of the respective connecting members 40A and 40B can be expanded as needed, the outer casings 10 and 20 or the absorbent body 30 can be adjusted in accordance with the movement of the wearer, so that Effectively prevent gaps between the wearer's skin and the diaper. Moreover, since the diaper improves the fit of the wearer's skin, the wearing feeling is enhanced. In the case where the joint region 43a is a peelable person, the joint members 43A and 40B can be developed as shown in Figs. 4 and 5 by peeling the joint region 43a. Further, in the case where the joint region 43a is not peelable, in the non-joining region 43b, the joint members 40A and 40B can be developed as shown in Fig. 4 .

Further, as shown in FIG. 2, in a state in which the respective connecting members 40A and 40B are completely folded along the upwardly folded portion 41 and the folded down portion 42, the outer casings 10 and 20 cover the longitudinal end of the absorbent body 30. The face of the face is better. That is, the upwardly folded portion 41 (see FIG. 3) of each of the connecting members 40A and 40B extending in the width direction, and the joint region extending in the longitudinal direction The edge of the 43a, the intermediate portion 43, and the outer region 45 may define a space having a downward opening. Further, the longitudinal end portion of the absorbent body 30 can be accommodated in the space. Further, although not shown in the drawings, the longitudinal end portion of the absorbent body 31 constituting the absorbent body 30 may be housed in the space defined herein. According to this configuration, the body fluid or the soft fluid flowing in the longitudinal direction of the absorbent body 30 can be accommodated in the space and can be prevented from leaking to the outside.

Further, the intermediate portion 43 may be joined to the inner region 44 or the outer region 45 in a non-releasable manner at the joint region 43a. In this case, since the intermediate portion 43 is not joined to the portion facing the skin surface side and the non-facing surface side in the non-joining region 43b, the respective connecting members 40A and 40B can be freely deployed as needed. In this case, for example, when the wearer starts moving, the pleats of the respective joint members 40A, 40B are unfolded in the non-joining region 43b. When the non-expanded state and the unfolded state of the respective connecting members 40A and 40B are repeatedly presented by the movement of the wearer, the space defined by each of the connecting members is reduced as time passes, and the pleating of each connecting member is made. Part of the function is like a pump, so that the air trapped in the space is continuously discharged. By using the development of the pleats in this manner, it is easy to discharge the moisture remaining in the space of each of the connection members 40A and 40B, and the air permeability of the pleat formation portion can be improved. Further, in the left and right end portions of the connecting members 40A and 40B in the width direction, the overlapping portion and the outer casing may be provided by the side surface sealing except for the portion overlapping the outer casings 10 and 20. 10, 20 together with the side seal synthetic peelable or non-peelable. When the overlapping portion is sealed to the side surface together with the exterior bodies 10 and 20, the joint region 43a can be omitted. Further, the entire lengthwise left and right end portions of the connecting members 40A and 40B in the width direction may be additionally sealed with the outer casings 10 and 20 in a non-detachable side surface.

In this manner, the intermediate portion 43 and the joint region 43a joining the facing portions thereof may be either a peelable temporary joint or a non-peelable joint. The peelable temporary joint and the non-peelable joint of the joint region 43a described herein can be realized by a conventional adhesive such as a hot melt adhesive. Now, as long as the coating amount or adhesion of the adhesive is adjusted, the peelable or non-peelable type is selected. The peelable joint state means that, for example, when peeling is desired in advance, both of them can be peeled off without causing the intermediate portion 43 or the sheet member constituting the facing portion to be cracked or broken. In contrast, the term "non-peelable joint state" means that, for example, if peeling is not previously contemplated, if the peeling is to be performed, the sheet member in the intermediate portion 43 or the facing portion thereof may be cracked or broken. Engaged state. Further, the joint region 43a may cover the entire region of the intermediate portion 43, but in this case, the joint region 43a releasably joins (i.e., temporarily engages) the intermediate portion 43 to the facing portion thereof. Further, the joint region 43a may be joined to the portion facing the intermediate portion 43 in a non-releasable manner, but in this case, the joint region 43a is partially provided in the intermediate portion 43.

[Sheet laminated structure of joint portion]

Next, a structure of a sheet member or the like constituting the connecting portion 40 (the connecting members 40A and 40B) will be described with reference to Fig. 6 . Fig. 6 is a view showing an enlarged view of the periphery of the rear side connecting member 40B shown in Fig. 3. Hereinafter, the structure of the rear side connecting member 40B will be described as an example, but 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. 6, the rear side connecting member 40B has a structure in which at least two members are stacked in the thickness direction. That is, in the example shown in Fig. 6, the rear side connecting member 40B has the leakage preventing sheet 51 and the outer sheet 52 attached to the non-facing surface side.

The leakage preventing sheet 51 is a liquid-impermeable sheet member and is disposed for the purpose of preventing leakage of body fluid from the rear-side connecting member 40B. Similarly to the back sheet 33, the leakage preventing sheet 51 is preferably a plastic film such as a polyethylene resin. In particular, in order to ensure the air permeability of the rear side connecting member 40B, it is preferable to use a microporous polyethylene film having a plurality of fine pores of 0.1 to 4 μm as the leakage preventing sheet 51. Formed by a sheet member having air permeability and liquid impermeability The leakage sheet 51 can prevent the body fluid from reaching the rear side connecting member 40B from leaking out, and can suppress the occurrence of wetness in the portion.

The outer sheet 52 is a sheet member mainly composed of a non-woven fabric, and is disposed for the purpose of improving the feel of the leakage preventing sheet 51 not facing the skin surface. The nonwoven fabric used herein is not particularly limited, and examples thereof include materials such as hot air non-woven fabric, point fusion non-woven fabric, non-woven fabric nonwoven fabric, air-flow non-woven fabric, melt-blown nonwoven fabric, SMS non-woven fabric, and SMMS non-woven fabric. Basically, a sheet member having liquid permeability and air permeability and having a good hand can be used as the outer sheet 52.

As shown in Fig. 6, the outer sheet 52 extends in the longitudinal direction toward the waist opening portion 5 side, and covers the upper end edge 51a of the leakage preventing sheet 51. Specifically, in the joint portion 44a of the inner region 44 of the rear side connecting member 40B, the outer sheet 52 has an upper extending portion 52a extending beyond the upper end edge 51a of the leakage preventing sheet 51. In the example shown in Fig. 6, the outer sheet 52 is directly joined to the non-facing surface of the rear outer casing 20 in the upper extending portion 52a.

In FIG. 6, in the longitudinal direction of the disposable diaper, the inner region 44 of the entire length of the joint line 44a is represented by a symbol P _1, located in the joint 44a of the leak-barrier sheet 51 of length Q ₁ represents a symbol, the outer sheet The length of the upper side extension 52a of 52 is indicated by the symbol R ₁ . For example, the length P _{1 of the} joint portion 44a is preferably 15 mm or more, and it may be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. Further, the joint length Q _{1 of the} leakage preventing sheet 51 is preferably 10 mm or more, and it may be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R ₁ of the upper extending portion 52a is preferably ₁ mm or more, and may be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Further, the ratio (R ₁ /P ₁ ) of the length R ₁ of the upper extending portion 52a to the entire length P ₁ of the joint portion 44a is preferably 5% or more, and may be set to 5 to 60%, 10 to 50%, and It is particularly good at 30 to 60%.

Further, as shown in Fig. 6, the outer sheet 52 extends in the longitudinal direction toward the side of the crotch portion 3, and the lower end edge 51b of the leakage preventing sheet 51 is attached. Covered. Specifically, the outer sheet 52 has a lower extending portion 52b that extends beyond the lower end edge 51b of the leakage preventing sheet 51 on the joint portion 45a of the outer side region 45 of the rear side connecting member 40B. In the example shown in Fig. 6, the outer sheet 52 is directly joined to the non-facing surface of the rear body exterior body 20 at the lower side extension portion 52b.

In FIG. 6, in the longitudinal direction of the disposable diaper, the outside of the joint region 45 in the entire length of the line 45a represents the symbol P _2, the length of the leakage prevention sheet 51 is located in the joint 45a is represented by the symbol Q _2, the outer sheet The length of the lower side extension 52b of 52 is indicated by the symbol R ₂ . For example, the length P _{2 of the} joint portion 45a is preferably 15 mm or more, and may be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. Further, the joint length Q _{2 of the} leakage preventing sheet 51 is preferably 10 mm or more, and may be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R _{2 of the} lower extending portion 52b is preferably 1 mm or more, and may be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Further, the ratio (R ₂ /P ₂ ) of the length R ₂ of the lower extending portion 52b to the entire length P ₂ of the joint portion 45a is preferably 5% or more, and may be set to 5 to 60% and 10 to 50%. It is especially good at 30 to 60%.

Further, in the example disclosed in Fig. 6, in the longitudinal direction of the disposable diaper, the outer sheet 52 extends beyond the leakage preventing sheet 51 on both the waist opening portion 5 side and the lower jaw portion 3 side. However, in the longitudinal direction of the disposable diaper, the outer sheet 52 may extend beyond the leakage preventing sheet 51 at least at least one of the waist opening portion 5 side and the lower jaw portion 3. That is, the outer sheet 52 may have at least one of the upper extending portion 52a and the lower extending portion 52b.

As described above, by extending the outer sheet 52 beyond the leakage preventing sheet 51 to cover the end edge thereof, the leakage preventing sheet 51 can be prevented from being exposed. Moreover, the outer edge of the outer sheet 52 having a good feel can be used to cover the end edge thereof, thereby improving the hand feeling or appearance.

Further, as shown in FIGS. 3 to 6, in the present embodiment, each of the connecting members 40A and 40B on the front side and the rear side of the disposable diaper preferably has one or a plurality of connecting portions arranged along the upward folding portion 41. Telescopic member 46. The connecting portion telescopic member 46 is an elastically stretchable member such as a wire-like elastic rubber, and is disposed in an upwardly 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 and 40B is formed by laminating the leakage preventing sheet 51 and the outer sheet 52, the connecting portion expansion and contraction member 46 may be fixed between the leakage preventing sheet 51 and the outer sheet 52. When the connecting portion expansion and contraction member 46 is disposed along the upwardly folded portion 41, the intermediate portion 43 of each of the connecting members 40A and 40B and the outer casings 10 and 20 are not easily separated by the contraction action of the connecting portion expansion and contraction member 46. A gap is created. Therefore, the appearance of the diaper is improved and the fit is improved.

In each of the connecting members 40A and 40B, a plurality of tummy telescopic members 47 extending in the width direction are disposed at predetermined intervals in the longitudinal direction of the disposable diaper. . The lower abdominal elastic member 47 is fixed to each of the coupling members 40A and 40B in a state of being stretched in the width direction of the disposable diaper. However, the lower abdomen telescopic member 47 is not disposed at the center in the width direction of each of the connection members 40A and 40B, or is partially cut so as not to exhibit stretchability. That is, the lower abdomen telescopic members 47 are basically located on both sides in the width direction of the absorbent body 30. Further, the lower abdomen telescopic member 47 may partially overlap both ends in the width direction of the absorbent body 30. Similarly to the above-described connecting portion telescopic member 46, each of the lower abdomen telescopic members 47 may be fixed between the leakage preventing sheet 51 and the outer sheet 52. When the lower abdomen expansion and contraction member 47 is contracted, the connection members 40A and 40B are contracted to form a plurality of fine pleats (lower abdomen pleats).

[Discrimination means and drawings]

Fig. 7 is a view showing the selection of the connecting members 40A, 40B. Fig. 7(a) schematically shows the unfolded state of the connecting members 40A and 40B before folding, and Figs. 7(b) and 7(c) show the folded form of the connecting members 40A and 40B, respectively.

As shown in Fig. 7, printing is performed in the joint members 40A, 40B There is a pattern 49. Pattern 49 contains text, graphics, symbols, patterns or colors or a combination of these. In the example shown in Fig. 7, the pattern 49 is printed on the non-facing surface of the outer region 45 of the connecting members 40A and 40B. In particular, in order to make the printing clear, the pattern 49 is preferably printed on the non-facing surface of the leakage preventing sheet 51. For example, as shown in Fig. 1, the non-facing skin surface of the outer region 45 of the connecting members 40A and 40B is a portion that can be viewed from the front body 1 side or the back body 2 side in the wearing state. Therefore, by printing any pattern 49 on the outer region 45 of the joint members 40A, 40B, the degree of freedom in designing the disposable diaper can be improved. Further, since the pattern 49 is printed on the non-facing surface of the leakage preventing sheet 51 of the outer region 45, it is not necessary to separately prepare a plastic film for pattern printing, whereby the number of articles of the disposable diaper can be reduced. Further, when a plastic film for pattern printing is separately provided, the number of sheets in which the sheet members are stacked increases, and there is a concern that air permeability or flexibility is low. If you follow the above structure, you can solve this problem.

As shown in Fig. 7, the joint members 40A, 40B have an upwardly folded portion 41 (dashed line) and a downwardly folded portion 42 (a little chain line). Further, the connecting members 40A and 40B are defined by the upwardly folded portion 41 and the downwardly folded portion 42 as being located at an intermediate portion 43 between the portions, and at a position closer to the waist opening portion than the lower folded portion 42. The inner region 44 and the outer region 45 located on the lower crotch portion side of the upper folded portion 41. Here, in the example shown in Fig. 7, the discrimination means 48 is provided on the skin-facing surface 43c of the intermediate portion 43. Further, in a state in which the connecting members 40A, 40B are folded along the downward folded portion 42, the facing portion 44b facing the skin facing surface 43c of the intermediate portion 43 is also provided with the discriminating means 48. In the example shown in Fig. 7, the non-facing skin surface of the inner region 44 is the skin facing surface 43c facing the intermediate portion 43. Therefore, the non-facing surface of the inner region 44 is the "facing portion 44b". In addition, the "facing portion 44b" referred to herein is not limited to the non-facing surface of the inner region 44. For example, the non-facing surface of each of the exterior bodies 10 and 20 may be referred to as a "facing portion 44b". Further, the discrimination means 48 is not an essential component and may be omitted.

The main purpose of the discriminating means 48 is to allow the wearer or the assistor of the disposable diaper to recognize the unfolded state of the flaps formed in the joint members 40A, 40B. That is, as shown in Fig. 7 (c) and Fig. 1, in the state in which the connecting members 40A, 40B are folded along the upwardly folded portion 41 and the folded down portion 42, the discriminating means 48 is not recognized from the outside or An illegible location. On the other hand, as shown in Fig. 7 (a), Fig. 7 (b), and Fig. 5, when the connecting members 40A, 40B are deployed, the discriminating means 48 can be recognized from the outside or can be easily recognized. In this manner, by attaching the discrimination means 48 to the external portion (43c, 44b) when the active pleat is deployed, the wearer or the assister can use the discrimination means 48 as the mark to understand the expanded state of the live pleat.

The discriminating means 48 is displayed in a manner that can be distinguished from other parts. Examples of the discrimination means 48 include characters, figures, symbols, patterns, concave-convex patterns, materials different from the sheet members constituting the exterior body, or colors different from the sheet members constituting the exterior body, or a combination of these. The so-called "text" contains Japanese and foreign languages and numbers. "Graphics" includes not only lines, curves, circles, ovals, triangles, squares, and other polygons, but also patterns of animals, plants, artifacts, and characters. A "mark" is an image that is drawn to indicate a certain thing, and includes, for example, a pictogram. The "pattern" is a decoration with a repeating depiction such as a predetermined figure. In the example shown in Fig. 7, a diagonal pattern is used as the discrimination means 48. The "concave-convex pattern" is a embossed pattern attached to the sheet member, and is preferably a pattern formed by a embossed pattern. An example of the uneven pattern may be an embossing pattern formed by introducing the sheet member between a pair of embossing rolls having irregularities on the outer peripheral surface or between the embossing roll and the outer peripheral surface having a smooth surface. The term "material different from the sheet member constituting the outer casing" means a material which can be distinguished from the sheet member constituting the outer casing, and the appearance or the touch can be different not only by the difference in the raw materials, but even if the raw materials are the same The case where the appearance or the touch is different depending on the manufacturing method or the processing method is also included. The term "different from the color of the sheet member constituting the outer casing" means a color distinguishable from the sheet member constituting the outer casing, not only the hue but not The same color, even if the hue is the same, the color of the chroma or the brightness of the concept is also a "different color." Further, when the sheet member constituting the exterior body has a plurality of different colors, the discrimination means 48 may use the color having the largest ratio of the outer casing as the "different color" among the plurality of colors. In general, the exterior system consists of a white sheet member. Therefore, in the case where the skin-facing surface 43c of the intermediate portion 43 or the facing portion 44b is colored, it is preferable to use a color other than white. In addition, the term "white" means a color having an L* value of 85 or more in the CIE-L*a*b* color system.

Further, the discrimination means 48 may be provided in either or both of the skin-facing surface 43c of the intermediate portion 43 or the facing portion 44b. Further, the discriminating means 48 need not be provided in the entire area of the skin-facing surface 43c of the intermediate portion 43 or the facing portion 44b as long as it is at least partially provided. However, as shown in Fig. 7, by providing the discrimination means 48 in the entire area facing the skin surface 43c or the facing portion 44b of the intermediate portion 43, it is easy to understand the unfolded state of the live pleats. Further, the same design as the discrimination means 48 provided on the skin-facing surface 43c or the facing portion 44b of the intermediate portion 43 is preferably not provided in other portions of the disposable diaper. Thereby, the discrimination means 48 can be displayed conspicuously when the live pleats are deployed.

Further, as described above, the connecting members 40A and 40B are formed by bonding the outer sheet 52 to the non-facing surface of the leakage preventing sheet 51. The leakage preventing sheet 51 is made of a plastic film or the like, and the outer sheet 52 is made of a non-woven fabric or the like. In this case, the discrimination means 48 is preferably attached to the non-facing surface of the leakage preventing sheet 51. For example, a discrimination means 48 such as a character or a figure can be printed on the leakage preventing sheet 51. Further, a sealing sheet having a surface on which a character or a pattern is printed and whose back surface is coated with a paste may be used as the discrimination means 48, and the sealing sheet may be attached to the leakage preventing sheet 51. A discriminating means 48 attached to the non-facing surface of the leakage preventing sheet 51 (e.g., printed, etc.) can be recognized by the wearer or the assister through the outer sheet 52. Further, the outer sheet 52 may be a non-woven fabric having a lower basis weight per unit area but capable of recognizing the discrimination means 48. In this way, due to the leakage preventing sheet 51 By means of a plastic film or the like, the discrimination means 48 can be made clear and conspicuous. Further, by covering the leakage preventing sheet 51 with the discrimination means 48 on the outer sheet 52, it is possible to prevent, for example, the ink used by the printing and discriminating means 48 from adhering to the coated clothing of the wearer.

[First variation]

Next, a first modification of each of the coupling members 40A and 40B will be described with reference to Fig. 8 . Fig. 8 is an enlarged cross-sectional view showing the rear side connecting member 40B. However, 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 side connecting member 40B has an inner face piece 53 in addition to the configuration shown in Fig. 6 and the like. The inner sheet 53 is a member that is attached to the skin-facing surface of the leakage preventing sheet 51. The inner sheet 53 is a sheet member mainly composed of a non-woven fabric, and is disposed for the purpose of improving the skin feel of the leakage preventing sheet 51 facing the skin surface. The nonwoven fabric used herein is not particularly limited, and examples thereof include a hot air non-woven fabric, a point fusion non-woven fabric, a non-woven fabric nonwoven fabric, an air flow non-woven fabric, a melt-blown nonwoven fabric, an SMS nonwoven fabric, and an SMMS nonwoven fabric, similarly to the outer sheet 52. Basically, the inner sheet 53 is a sheet member having liquid permeability and air permeability and a good touch on the skin. In the example shown in Fig. 8, the inner sheet 53 is directly joined to the non-facing surface of the rear body exterior body 20.

Similarly to the outer sheet 52, the inner sheet 53 extends in the longitudinal direction toward the waist opening portion 5 side of the leakage preventing sheet 51, and covers the upper end edge 51a of the leakage preventing sheet 51. Specifically, in the joint portion 44a of the inner region 44 of the rear side connecting member 40B, the inner sheet 53 has an upper extending portion 53a extending beyond the upper end edge 51a of the leakage preventing sheet 51. As previously mentioned, the outer sheet 52 also has an upper extension 52a. Therefore, there is a region where the upper side extension portion 53a of the inner panel piece 53 overlaps with the upper side extension portion 52a of the outer sheet 52, and the upper side extension portions 52a, 53a of the both are joined to each other in this region. The upper extending portion 53a of the inner sheet 53 is as long as the entire length P ₁ of the joint portion 44a of the inner portion 44, the length Q ₁ of the leakage preventing sheet 51 at the joint portion 44a, and the upper extending portion 53a of the inner sheet 53. The length R ₁ is set to be the same as that of the outer sheet 52 described above.

Further, similarly to the outer sheet 52 described above, the inner sheet 53 extends in the longitudinal direction from the side of the dam portion 3 toward the leakage preventing sheet 51, and covers the lower end edge 51b of the leakage preventing sheet 51. Specifically, in the joint portion 45a of the outer side region 45 of the rear side connecting member 40B, the inner sheet 53 has a lower extending portion 53b extending beyond the lower end edge 51b of the leakage preventing sheet 51. As previously mentioned, the outer sheet 52 also has a lower extension 52b. Therefore, there is a region where the lower side extension portion 53b of the inner panel piece 53 overlaps with the lower side extension portion 52b of the outer sheet 52, and in this region, the lower side extension portions 52b, 53b are joined to each other. The lower extending portion 53b of the inner sheet 53 is extended to the entire length P ₂ of the joint portion 45a of the outer region 45, the length Q ₂ of the leakage preventing sheet 51 at the joint portion 45a, and the lower side of the inner sheet 53. The length R _{2 of the} portion 53b may be set to be similar to the outer sheet 52 described above.

[Second variation]

Next, a second modification of the disposable diaper according to the present invention will be described with reference to Fig. 9. Further, the structure of the back body 2 side described here is also applicable to the front body 1 side. As shown in Fig. 9, the rear side connecting member 40B has an inner surface leakage preventing piece 54 in addition to the configuration described in Fig. 6. The inner surface leakage preventing piece 54 is a liquid-impermeable sheet member that is bonded to the skin-facing surface of the leakage preventing sheet 51. The inner surface leakage preventing piece 54 can use the same sheet member as the aforementioned leakage preventing sheet 51. In the example shown in Fig. 9, the upper end edges of the leakage preventing sheet 51, the outer sheet 52, and the inner surface leakage preventing sheet 54 are flush. Further, in this example, the lower end edges of the leakage preventing sheets 51 and the outer sheet 52 are also flush. However, the length of the inner surface leakage preventing piece 54 is such that the lower end edge side thereof reaches and is joined to the non-facing surface of the absorbent body 30, but is shorter than the leakage preventing sheet 51 and the outer sheet 52.

In addition, compared with the structure shown in Fig. 6, the ninth The example shown in the figures is not identical in the construction of the absorbent body 30. That is, in this example, the back sheet 33 provided in the absorbent body 30 does not reach the end edge of the absorbent body 30 in the longitudinal direction. The longitudinal end edge 33a of the back sheet 33 is not joined to the upper sheet 32, but is joined to the non-facing surface of the absorbent body 31. However, the cover sheet 34 reaches the end edge in the longitudinal direction of the absorbent body 33 and is joined to the longitudinal end portion of the upper sheet 32. In this manner, in the example shown in Fig. 9, the non-facing skin surface of the absorbent body 31 is not covered by the back sheet 33, and a region 33b having no back sheet is intentionally formed. Since the region 33b having no back sheet has no back sheet 33 having poor air permeability and flexibility, it can be said that the air permeability is excellent and the flexibility is high.

According to the above configuration, even in the longitudinal direction end portion of the absorbent body 30, the region 33b of the absorbent body 31 which is not covered by the back sheet 33 and which does not have the back sheet is formed, but in the example of Fig. 9, It is replaced by a leakage preventing sheet 51 and an inner surface leakage preventing sheet 54. In other words, since the leakage preventing sheet 51 included in the rear side connecting member 40B is overlapped at least in the thickness direction of the region 33b having no back sheet, the body fluid can be prevented from leaking from the region 33b even if the back sheet 33 is not provided. In the region 33b having no back sheet, the leakage preventing sheet 51 and the inner surface leakage preventing sheet 54 are preferably joined to the non-facing surface of the cover sheet 34. In this manner, by intentionally forming the region 33b without the back sheet, the air permeability and flexibility of the end portion of the absorbent body 30 can be improved. Further, by disposing the leakage preventing sheet 51 and/or the inner surface leakage preventing sheet 54 in the region 33b having no back sheet, the function of the replacement back sheet 33 can be exerted, and leakage of body fluid from the region 33b can be prevented.

In the above description, in order to express the contents of the present invention, the description of the embodiments of the present invention has been made with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and includes modified or improved forms that can be derived by those skilled in the art according to the matters described in the present specification.

[Industrial availability]

The present invention is applicable to a disposable diaper such as a pull-on type or a belt type. Thus, the present invention can be suitably applied to the disposable diaper manufacturing industry.

1‧‧‧Predecessor

2‧‧‧ Back body

3‧‧‧Lower Department

4‧‧‧Side sealing department

5‧‧‧Lumbar opening

6‧‧‧ leg opening

10‧‧‧Predecessor body

13‧‧‧Lumbar telescopic member

20‧‧‧Back body

23‧‧‧Lumbar telescopic member

30‧‧‧Absorbable ontology

40‧‧‧Connecting Department

40A‧‧‧ front side joint member

46‧‧‧Connecting section telescopic members

47‧‧‧lower abdomen expansion member

49‧‧‧ pattern

100‧‧‧Disposable diapers

Claims (5)

A disposable diaper comprising: a front body outer body (10) on the abdomen side of the wearer; a rear body outer body (20) on the back side of the wearer; and an absorbent body (30) located on the wearer a user's lower jaw portion, wherein the absorbent body (30) is connected to both the front body outer casing (10) and the rear body outer body (20) by a joint portion (40) or In any of the outer casings, the connecting portion (40) has an upwardly folded portion (41) and a downwardly folded portion (42) extending in a width direction of the disposable diaper, and the connecting portion (40) is printed on the connecting portion (40). Drawing (49). The disposable diaper according to claim 1, wherein the connecting portion (40) has an intermediate portion (43) between the upward folded portion (41) and the downward folded portion (42), At least a part of either or both of the skin facing surface (43c) of the intermediate portion (43) and the facing portion (44b) facing the skin facing surface (43c) is provided with a distinguishing means distinguishable from other portions (48). The disposable diaper according to claim 2, wherein the discrimination means (48) comprises a character, a figure, a mark, a pattern, a concave-convex pattern, a material different from a sheet member constituting the exterior body, or different The color of the sheet member constituting the exterior body, or a combination of these. The disposable diaper according to claim 2, wherein the connecting portion (40) is formed such that the leakage preventing sheet (51) and the non-facing surface of the leakage preventing sheet (51) are outside. When the sheet (52) is laminated in the thickness direction, the discrimination means (48) is attached to the non-facing surface of the leakage preventing sheet (51). The disposable diaper according to any one of claims 2 to 4, wherein the connecting portion (40) is in a state in which the upward folded portion (41) and the downward folded portion (42) are folded. The aforementioned intermediate portion (43) has a joint region (43a) in which the joint region (43a) is detachably or non-detachably joined The portion of the intervening region (43) facing either the surface facing the skin surface and the portion facing the non-facing surface side.