JP2017140072A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper capable of suppressing front leakage and back leakage while suppressing leakage around a foot.SOLUTION: An exterior body 12 includes an upper exterior body 12U around a waist and a lower exterior body 12D adjoining a lower side of the upper exterior body 12U. The upper exterior body 12U includes an upper stretchable member 15U that stretches around a waist. The lower exterior body 12D includes a lower stretchable member 15D which stretches around a waist. The upper stretchable member 15U is arranged inside an absorbent body 16, and the lower stretchable member 15D is arranged outside the absorbent body 16. A position on an end part in back and forth direction of a solid gathering 21 is positioned on an upper side than the lower end of the lower exterior body 12D.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a disposable diaper whose exterior part includes an elastic member.

  As shown in Patent Document 1, the disposable diaper has a first exterior part that constitutes the front body, a second exterior part that constitutes the rear body, a front end part joined to the first exterior part, and a rear end part that is first. 2 It is comprised from the absorptive main body joined to an exterior part. A 1st exterior part and a 2nd exterior part bend an absorptive main part in two, and constitute a waist part at the upper end part by joining both ends of the waist part direction of each exterior part, An opening around the leg is formed at the lower end. In the first exterior part and the second exterior part, stretchable members such as rubber thread are arranged along the waistline direction at the waistline part. Moreover, an absorptive main body is an inner surface which contacts skin, Comprising: The solid gathers are arrange | positioned at the both ends along the front-back direction. The three-dimensional gather is located at the opening around the leg when worn.

JP 2006-263306 A

  On the other hand, in the disposable diaper of patent document 1, the expansion-contraction member of an exterior part is located in the outer side with respect to an absorptive main body, ie, the opposite side to skin. In this case, in accordance with the shrinkage of the exterior part in the direction around the trunk by the elastic member, the absorbent main body also has a fine fold-like crease in the same direction in the part overlapping the exterior part and the part close to the part. Shrinks and creates a gap between the absorbent body and the skin. This gap causes abdominal leakage from which excrement leaks from the abdomen and back leakage from the back.

  On the other hand, a disposable diaper is also known in which the elastic member is positioned on the inner side, that is, on the skin side with respect to the absorbent main body, contrary to the above example. In this case, the above-described gap is less likely to occur in the waistline portion, the adhesion between the skin and the exterior portion is improved, and abdominal leakage and back leakage can be suppressed. However, since the elastic member is located on the inner side with respect to the absorbent main body, the absorbent main body curves in a convex shape toward the outer side opposite to the skin when in use. For this reason, the three-dimensional gathers on the inner surface of the absorbent main body are separated from the skin and hardly adhere to the skin, resulting in gaps around the legs. This gap causes leakage of excrement from around the legs.

  An object of this invention is to provide the disposable diaper which enabled it to suppress the leak from the leg periphery, suppressing the leak from the trunk periphery.

The disposable diaper for solving the above problems includes a first exterior part constituting the front body, a second exterior part constituting the back body, and both end parts in the front-rear direction are the first exterior part and the second exterior part. And an absorbent main body having a three-dimensional gather on both side edges along the front-rear direction on the inner surface in contact with the skin. The first exterior part and the second exterior part are connected at both ends in the waistline direction to form a waistline part at the upper end. At least one exterior part of the first exterior part and the second exterior part includes an upper region along the trunk periphery and a lower region adjacent to the lower side of the upper region, the upper region, An upper elastic member that expands and contracts in the waist direction is provided, and the lower region includes a lower elastic member that expands and contracts in the waist direction. The upper elastic member is disposed inside the waist portion with respect to the absorbent main body in a state where the waist portion is formed, and the lower stretch member is in a state where the waist portion is formed. With respect to the said absorptive main body, it arrange | positions on the outer side of the said trunk periphery part. And the position of the edge part in the front-back direction of the said three-dimensional gather exists in the area | region above the lower end of the said waist part.
According to the above configuration, in the upper region of the exterior portion, the upper elastic member is positioned on the inner side with respect to the absorptive main body. Also, in the lower region of the exterior part, the lower elastic member is located outside the absorbent main body, so that the three-dimensional gather is pressed against the skin side to prevent leakage from the leg periphery. Can be suppressed.

In the disposable diaper, in the lower region, a region where the exterior portion overlaps the absorbent main body is a lower adhesive region, and the lower elastic member in an extended state does not appear in the lower adhesive region. You may comprise.
According to the above configuration, since the lower stretchable member in the extended state is not disposed in the lower adhesive region, the absorbent main body contracts in accordance with the contraction of the lower stretchable member in the lower region, and the absorbent main body and the skin. It is possible to suppress the generation of a gap between them, and to suppress abdominal leakage and back leakage.

In the disposable diaper, in the upper region, a region where the exterior portion overlaps the absorbent main body is an upper adhesive region, and the upper adhesive region includes an adhesive portion and a non-adhesive portion, and the non-adhesive portion May have a pocket shape in which the crotch side is an open end and the periphery excluding the open end is surrounded by the adhesive portion.
According to the said structure, since a non-adhesion part has a pocket shape, excrement becomes easy to be accommodated in a non-adhesion part, and can suppress abdominal leak and back leak.

In the disposable diaper, in the lower region, a region where the exterior portion overlaps the absorbent main body is a lower adhesive region, and the lower elastic member is disposed in an extended state in the lower adhesive region. It is good.
According to the said structure, in a lower adhesion area | region, it becomes unnecessary to cut | disconnect the extended lower elastic member, and a manufacturing process can be simplified.

The said disposable diaper WHEREIN: The said exterior part arrange | positioned at the said lower area | region and the said exterior part arrange | positioned at the said upper area | region are good also as a structure which is a series.
According to the said structure, since a clearance gap does not arise between the exterior part arrange | positioned in a lower area | region, and the exterior part arrange | positioned in an upper area | region, it becomes easy to wear a disposable diaper.

  According to the present invention, it is possible to suppress leakage from around the leg while suppressing leakage from around the trunk.

The perspective view of the underpants type disposable diaper in 1st Embodiment which materialized the disposable diaper of this invention. (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 1st Embodiment, (b) is aa sectional drawing of (a), (c) is an adhesion area | region of an upper area | region (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a). (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 2nd Embodiment, (b) is aa sectional drawing of (a), (c) is an adhesion area | region of an upper area | region (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a). (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 3rd Embodiment, (b) is aa sectional drawing of (a), (c) is an adhesion area | region of an upper area | region (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a). (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 4th Embodiment, (b) is aa sectional drawing of (a), (c) is an adhesion area | region of an upper area (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a) an adhesion region of the exterior sheet located outside. (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 5th Embodiment, (b) is aa sectional drawing of (a), (c) is the absorptive main body and upper part in an upper area | region. The top view which shows the relationship with an exterior body corresponding to (a), (d) is a top view which shows the adhesion area | region of the exterior sheet located outside corresponding to (a). (A) is a top view which shows the unfolded state of the underpants type disposable diaper in 6th Embodiment, (b) is aa sectional drawing of (a), (c) is a bonding area | region of an upper area | region (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a) an adhesion region of the exterior sheet located outside.

[First Embodiment]
With reference to FIG. 1 and FIG. 2, the underpants type disposable diaper in one Embodiment which actualized the disposable diaper in this invention is demonstrated.
As shown in FIG. 1, a pants-type disposable diaper 10 (hereinafter simply referred to as “diaper 10”) has a front body 10F having a shape that follows the shape of the abdomen of the human body and a shape that follows the shape of the back of the human body. A back body 10R and a crotch 10C connecting the front body 10F and the back body 10R are provided.

  In the front body 10F, the side opposite to the crotch portion 10C constitutes a waistline portion 10W that surrounds a portion around the torso of the human body, and the waistline portion 10W includes a waistline opening 10A at the upper end. The left and right ends of the front body 10F, the left and right ends of the back body 10R, and the left and right ends of the crotch 10C constitute a pair of left and right leg openings 10L having a shape surrounding the thigh portion of the human body. doing. Further, the left and right end portions of the front body 10F and the back body 10R in the trunk periphery direction are joint portions 11.

Fig.2 (a) is a top view which shows the expansion | deployment state of a pants type disposable diaper, (b) is aa sectional drawing. In FIG. 2B, the right side is the skin side of the diaper wearer. The waist part 10W in the front body 10F is configured by a first exterior body 12F as a first exterior part, and the waist part 10W in the rear body 10R is configured by a second exterior body 12R as a second exterior part. Yes. Hereinafter, the first exterior body 12F and the second exterior body 12R are simply referred to as an exterior body 12 collectively.
The exterior body 12 has a rectangular shape whose longitudinal direction is the circumference direction of the trunk, and is configured such that an elastic member 15 (15U, 15D) is sandwiched between the exterior sheet 13 and the exterior sheet 14. The exterior sheet 13 and the exterior sheet 14 are a series, and are configured by sandwiching the stretchable member 15 between them by folding in half. The exterior sheet 13 and the exterior sheet 14 may be separate. Here, in the upper exterior body 12U, the exterior sheet 13 and the exterior sheet 14 are a series, and in the lower exterior body 12D, the exterior sheet 13 and the exterior sheet 14 are separated.

  A thin nonwoven fabric is used for the exterior sheet 13 and the exterior sheet 14 in order to obtain a good touch. The exterior sheet 13 is positioned on the inner side which is the skin side of the wearer, and the exterior sheet 14 is positioned on the outer side. As an example, examples of the nonwoven fabric include a nonwoven fabric made of synthetic fibers made from polyethylene, polypropylene, polyester, and other thermoplastic resins. The exterior sheet 13 and the exterior sheet 14 may be liquid-impermeable or liquid-permeable.

  The elastic member 15 is an elastic body formed of one or more materials selected from natural rubber, synthetic rubber, urethane, and the like, and is formed in a thread shape, a string shape, a net shape, or a flat shape. A plurality of the elastic members 15 are arranged in parallel to each other along the circumference of the trunk.

  The first exterior body 12F and the second exterior body 12R are connected by an absorbent main body 16 constituting the crotch portion 10C. The absorptive main body 16 has a rectangular shape whose longitudinal direction is the front-rear direction. The absorbent main body 16 includes a back sheet 17 having liquid impermeability, an absorber 18, and a top sheet 19 having liquid permeability. In the diaper 10, the top sheet 19 is disposed on the inner side in contact with the wearer's skin, and the back sheet 17 is disposed on the outer side. And in the diaper 10, it has overlapped in order of the back sheet | seat 17, the absorber 18, and the top sheet 19 from the outer side. Furthermore, a non-woven fabric may be arranged on the outside of the back sheet 17 in order to improve the touch feeling.

  The material forming the back sheet 17 is, for example, a film made of polyethylene resin having liquid impermeability. The back sheet 17 is formed with a large number of fine holes to ensure air permeability. The material forming the top sheet 19 is one or more materials selected from, for example, a woven fabric, a nonwoven fabric, and a porous film. The top sheet 19 is made of, for example, a non-woven fabric having liquid permeability composed of fibers of thermoplastic resin such as polypropylene, polyethylene, polyester, and nylon and subjected to hydrophilic treatment. .

  The absorber 18 has an elongated band shape so as to straddle the front body 10F, the crotch 10C, and the back body 10R. The material forming the absorbent body 18 is an absorbent material such as flap pulp, superabsorbent polymer, hydrophilic sheet, and the like. The absorbent body 18 is wrapped with a core wrap, and is disposed and joined between the back sheet 17 and the top sheet 19.

  The absorbent main body 16 is provided with three-dimensional gathers 21 at both ends along the front-rear direction. The three-dimensional gather 21 is configured such that side sheets 21S are arranged on both ends of the top sheet 19 along the front-rear direction, and elastic members 21E are arranged along the front-rear direction on the side sheets 21S. Specifically, the side sheet 21 </ b> S is a long sheet body that extends in the front-rear direction including a liquid-impermeable nonwoven fabric or the like. The side seat 21S is arranged such that the front end portion overlaps with the first exterior body 12F constituting a part of the front body 10F, and the rear end portion overlaps with the second exterior body 12R constituting a part of the rear body 10R. . The three-dimensional gather 21 rises toward the wearer's skin contact direction when the elastic member 21E contracts, and is positioned around the leg opening 10L.

  As shown in FIG. 2B, in any of the exterior bodies 12 of the first exterior body 12F and the second exterior body 12R, the exterior body 12 includes an upper exterior body 12U in the upper region and a lower exterior body 12D in the lower region. It is divided into and. 12 U of upper exterior bodies are arrange | positioned with respect to the absorptive main body 16, ie, the top sheet 19 side, and comprise the trunk periphery part 10W. The lower exterior body 12D is disposed on the outer side with respect to the absorbent main body 16, that is, on the back sheet 17 side. The front end portion and the rear end portion of the three-dimensional gather 21 are extended to a position at least overlapping with the lower exterior body 12D on the absorbent main body 16, and here, up to a boundary portion between the lower exterior body 12D and the upper exterior body 12U. Extended. Accordingly, the three-dimensional gather 21 is pressed by the lower exterior body 12D so as to be in close contact with the skin. The side sheets 21S constituting the three-dimensional gather 21 are folded back so as to sandwich the elastic member 21E, and the front end portion and the rear end portion of the folded back are sealed by the seal portion 23.

  Further, the upper elastic member 15U in the upper exterior body 12U is disposed across the left and right end portions in the waist circumference direction between the exterior sheets 13 and 14 with the waist circumference direction as the longitudinal direction, and improves the adhesion with the skin. ing. On the other hand, the lower elastic member 15D in the lower exterior body 12D is configured not to be disposed in an extended state in a region overlapping the absorbent main body 16. Such a configuration can be realized by cutting the lower elastic member 15D in a state of being stretched between the exterior sheets 13 and 14 in a region overlapping the absorbent main body 16, particularly the absorber 18. Therefore, the lower elastic member 15 </ b> D may exist in an unextended state in the region overlapping the absorbent main body 16. Thereby, in the area | region which overlaps with lower exterior body 12D, and its peripheral area, the absorptive main body 16 contracts so that a fine crease-like crease may be made according to the contraction of the lower elastic member 15D, and the absorbent main body 16 and the skin It is possible to suppress the formation of a gap between them.

  The upper elastic member 15U constitutes a waist gather at a portion near the waist circumference opening 10A of the waist circumference portion 10W, and the lower elastic member 15D constitutes a shearing gather at a position adjacent to the waist gather at the lower side. The width dimension in the height direction orthogonal to the trunk periphery direction is formed so that the upper exterior body 12U including the waist gathers is wider than the lower exterior body 12D constituting the shearing gathers. Specifically, the dimension of the exterior body 12 in the height direction perpendicular to the trunk periphery direction of the upper exterior body 12U is set to be slightly larger than half of the overall dimension of the exterior body 12. The diaper 10 increases the size of the upper exterior body 12U provided with a waist gather that is tighter than the lower exterior body 12D provided with a shearing gather, thereby making it difficult to cause abdominal leakage and back leakage.

  As shown in FIG. 2C, the upper exterior body 12 </ b> U is bonded to the absorbent main body 16 with a hot melt adhesive 22. At this time, the upper adhesive region 22U is the entire region at the front end and the rear end where the absorbent main body 16 overlaps the upper exterior body 12U. As shown in FIG. 2D, the lower exterior body 12 </ b> D is bonded to the absorbent main body 16 with a hot melt adhesive 22. At this time, the lower adhesive region 22D is the entire region where the absorbent main body 16 overlaps the lower exterior body 12D. Then, the absorbent main body 16 is arranged such that the lower end portion of the upper exterior body 12U and the upper end portion of the lower exterior body 12D are aligned at the same position in the front-rear direction so that no gap is generated in the direction perpendicular to the waistline direction. It is arranged on each side.

As described above, according to the first embodiment, the effects listed below can be obtained.
(1) In the upper region of the exterior body 12, the upper elastic member 15U in the upper exterior body 12U is positioned on the inner side with respect to the absorbent main body 16, so that the adhesion with the skin is improved in the waist portion 10W. Can be made. Moreover, in the waist part 10W, the upper elastic member 15U is positioned on the inner side with respect to the absorbent body 16, so that the absorbent body 16 is curved in a direction along the waist. Also in this point, the adhesion between the front end portion and the rear end portion of the absorbent main body 16 and the skin is improved. Thereby, it becomes difficult to produce a clearance gap between skin and abdominal leak and back leak can be suppressed.

  (2) In the lower region of the exterior body 12, the lower elastic member 15 </ b> D in the lower exterior body 12 </ b> D is located outside the absorbent main body 16. In the lower region, the three-dimensional gather 21 located on the inner surface side that contacts the skin of the absorbent main body 16 is pressed by the lower elastic member 15D toward the wearer's skin contact direction, and the gap is between the legs. The leakage from the leg opening 10L can be suppressed.

(3) The lower elastic member 15 </ b> D is configured not to be arranged in an extended state in a region overlapping the absorbent main body 16. As a result, the absorbent main body 16 contracts in accordance with the contraction of the lower elastic member 15D in the region overlapping with the lower exterior body 12D and its peripheral region, so that the absorbent main body 16 is interposed between the absorbent main body 16 and the skin. Generation of a gap can be suppressed, and abdominal leakage and back leakage can be suppressed.
(4) As described above, the diaper 10 does not need to be provided with a three-dimensional gather or a pocket for newly suppressing leakage, and only changes the arrangement of the expansion / contraction member 15 between the upper region and the lower region. And back leakage and leakage from around the legs can be suppressed.

[Second Embodiment]
FIG. 3A is a plan view showing a developed state of the pants-type disposable diaper in the second embodiment, FIG. 3B is a sectional view taken along the line aa in FIG. 3C, and FIG. The top view shown corresponding to (a), (d) is the top view showing the adhesion field of a lower field corresponding to (a). In FIG. 3B, the right side is the skin side of the diaper wearer.

As shown in FIG.3 (c), in the underpants type disposable diaper 30 in 2nd Embodiment, the upper adhesion area | region used as the adhesion area | region of the upper exterior body 12U and the absorptive main body 16 is the adhesion part 31 and the non-adhesion part 32. It is configured by combining. Specifically, the upper exterior body 12U and the absorbent main body 16 are bonded to each other with the U-shaped peripheral portions of the front end portion and the rear end portion of the absorbent main body 16 as adhesive portions 31 in the upper region. The central part side in the front-rear direction, that is, the crotch part 10C side is the opening end 33, and the region surrounded by the bonding part 31 is the non-bonding part 32. Thereby, in the non-bonding part 32, the upper exterior body 12 </ b> U is separated from the absorbent main body 16 and constitutes a pocket 34.
Note that the lower elastic member 15 </ b> D is configured not to be disposed in an extended state in the region overlapping the absorbent main body 16 below the pocket 34.

As described above, according to the second embodiment, the effects listed below can be obtained.
(5) Since the upper elastic member 15U is positioned on the inner side with respect to the absorbent main body 16 in the trunk periphery 10W, the absorbent main body 16 is curved in a direction along the trunk periphery. Due to this curvature, the upper exterior body 12U separated from the absorbent main body 16 is easily separated from the absorbent main body 16, and the pocket 34 is easily opened. Therefore, the excrement is easily accommodated in the pocket 34, and abdominal leakage and back leakage can be suppressed.

[Third Embodiment]
FIG. 4A is a plan view showing a developed state of the pants-type disposable diaper in the third embodiment, FIG. 4B is a sectional view taken along the line aa in FIG. 4C, and FIG. The top view shown corresponding to (a), (d) is the top view showing the adhesion field of a lower field corresponding to (a). In FIG. 4B, the right side is the skin side of the diaper wearer.

  As shown to Fig.4 (a), in the underpants type disposable diaper 40 in 3rd Embodiment, lower elastic member 15D is arrange | positioned in the expanded state in the area | region which overlaps with the absorptive main body 16. As shown in FIG. Also in the pants-type disposable diaper 40, the upper exterior body 12 </ b> U is separated from the top sheet 19 and constitutes a pocket 34 in the non-bonded portion 32.

As described above, according to the third embodiment, the effects listed below can be obtained.
(6) In the lower region, the lower elastic member 15 </ b> D is located outside the absorbent main body 16. Therefore, the absorptive main body 16 tends to bend in the opposite direction with respect to the waistline, and in this respect, a gap is easily generated between the skin and the skin. In the third embodiment, pockets 34 are formed in the upper region. Therefore, even if leakage occurs from the gap formed in the lower region, the excrement can be accommodated in the pocket 34, and abdominal leakage and back leakage can be suppressed.
(7) As in the first embodiment and the second embodiment, in the region where the lower elastic member 15D of the lower exterior body 12D overlaps the absorbent main body 16, the lower elastic member 15D is cut so as not to be arranged in the extended state. The process to perform becomes unnecessary. In this respect, the manufacturing process can be simplified and the production efficiency can be improved.

[Fourth Embodiment]
FIG. 5A is a plan view showing an unfolded state of the pants-type disposable diaper in the fourth embodiment, FIG. 5B is a sectional view taken along the line aa in FIG. 5C, and FIG. The top view shown corresponding to (a), (d) is a top view showing the adhesion field of the exterior sheet located outside corresponding to (a). In FIG. 5B, the right side is the skin side of the diaper wearer.

  As shown in FIG.5 (b), in the underpants type disposable diaper 50 in 4th Embodiment, the exterior sheet 13 located in the innermost side near the skin of the upper exterior body 12U and the exterior sheet 14 located in the outermost side are a series. It is composed of sheets. The outermost exterior sheet 14 is bonded to the absorbent main body 16 by the hot melt adhesive 22 over the lower region and the upper region. In this case, the exterior body 12 is integrated into an upper exterior body 12U and a lower exterior body 12D without being divided.

As mentioned above, according to the said 4th Embodiment, the effect enumerated below can be acquired.
(8) A gap formed when the upper exterior body 12U and the lower exterior body 12D are integrally formed and the upper exterior body 12U and the lower exterior body 12D are divided into two at the boundary portion in the vicinity of the joint portion 11 on both the left and right sides. Does not occur. Therefore, even when the pants-type disposable diaper 50 is worn, the legs do not enter the gap between the upper exterior body 12U and the lower exterior body 12D, and the pants-type disposable diaper 50 is prevented from being difficult to wear. can do.
(9) When the pants-type disposable diaper 50 is removed, the joint 11 is broken. Also in the junction part 11, since it is not isolate | separated into the upper exterior body 12U and the lower exterior body 12D, the junction part 11 can be broken by one operation | work.

[Fifth Embodiment]
FIG. 6A is a plan view showing an unfolded state of the pants-type disposable diaper in the fifth embodiment, FIG. 6B is a cross-sectional view taken along line aa of FIG. 6A, and FIG. The top view which shows the relationship between an upper exterior body corresponding to (a), (d) is a top view which shows the adhesion area | region of the exterior sheet located outside corresponding to (a). In FIG. 6B, the right side is the skin side of the diaper wearer.

As shown in FIG. 6 (b), the pants-type disposable diaper 60 in the fifth embodiment is disposed on the outermost side with the exterior sheet 13 located on the inner side closest to the skin of the upper exterior body 12U, as in the fourth embodiment. The positioned exterior sheet 14 is composed of a series of sheets. The outermost exterior sheet 14 is bonded to the absorbent main body 16 by the hot melt adhesive 22 over the lower region and the upper region. In this case, the lower exterior body 12D is integrated with the upper exterior body 12U without being divided.
6B and 6C, on the other hand, the upper exterior body 12U is not bonded to the inner surface of the absorbent main body 16. That is, the upper adhesive region 22U is not formed between the upper exterior body 12U and the inner surface of the absorbent main body 16.

As described above, according to the fifth embodiment, in addition to the effects (8) and (9), the effects listed below can be obtained.
(10) The upper exterior body 12U located inside the absorbent main body 16 does not have a direct adhesive portion with the absorbent main body 16. Therefore, the upper elastic member 15U can freely expand and contract, and the adhesion with the skin is improved. Therefore, it can suppress that the followable | trackability with respect to a wearer's motion deteriorates.
(11) Even if the upper exterior body 12U is not bonded to the absorbent main body 16, a series of the exterior sheet 13 positioned on the inner side closest to the skin of the upper exterior body 12U and the exterior sheet 14 positioned on the outermost side. It is composed of sheets. Therefore, it is possible to suppress excrement from leaking between the absorbent main body 16 and the upper exterior body 12U to the outside.

[Sixth Embodiment]
Fig.7 (a) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 6th Embodiment, (b) is aa sectional drawing of (a), (c) is the adhesion area | region of an upper area | region. The top view shown corresponding to (a), (d) is a top view showing the adhesion field of the exterior sheet located outside corresponding to (a). In FIG. 7B, the right side is the skin side of the diaper wearer.

  As shown in FIGS. 7A and 7B, in the pants-type disposable diaper 70, the exterior sheet 14 located on the outermost side extends over the first exterior body 12F, the absorbent main body 16, and the second exterior body 12R. Arranged. The outer sheet 14 is formed with a pair of cut-out end portions 61 having a semicircular arc shape forming the leg opening 10L at the center of the left and right sides along the front-rear direction. In this case, the adhesion region 22A between the exterior sheet 14 and the absorbent main body 16 in the upper exterior body 12U and the lower exterior body 12D extends not only to the lower region but also to the upper region, and further to the crotch portion 10C of the absorbent main body 16. Provided. In the pants-type disposable diaper 70 configured as described above, the same effects as the above-described pants-type disposable diaper can be achieved.

In addition, each said embodiment can also be suitably changed and implemented as follows.
In the region where the lower elastic member 15D overlaps the absorbent main body 16, the configuration in which the lower elastic member 15D is not arranged in an extended state may be only on the front body 10F side or only on the back body 10R side. The lower elastic member 15 </ b> D may be disposed in a slack state in a region overlapping the absorbent main body 16.
The pocket 34 may be provided only on the front body 10F side or only on the back body 10R side.
-The front end part and rear end part of the three-dimensional gather 21 should just be extended to the position which overlaps with lower exterior body 12D on the absorptive main body 16. FIG. For example, it may overlap with the upper exterior body 12U in the upper region, or may extend to the vicinity of the trunk periphery opening 10A of the trunk periphery 10W. Furthermore, the front end part and the rear end part of the three-dimensional gather 21 may protrude beyond the trunk periphery opening 10A.
The lower end portion of the upper exterior body 12U located inside the absorbent main body 16 and the upper end portion of the lower exterior body 12D located outside may be located at the same position in the boundary portion. And they may overlap.
In the upper region, the upper elastic member 15U only needs to be positioned inside the absorbent main body 16, and in the lower region, the lower elastic member 15D only needs to be positioned outside the absorbent main body 16. . For example, the absorbent main body 16 may be sandwiched between the outer side and the inner side with an exterior sheet with respect to the adhesion region of the front end portion and the rear end portion of the absorbent main body 16. Each exterior sheet used at this time is a single sheet that is not divided into an upper region and a lower region. Then, the upper elastic member 15U is fixed to the upper region of the exterior sheet positioned inside the absorbent main body 16, and the lower elastic member 15D is fixed to the lower region of the outer sheet positioned outside the absorbent main body 16. Good.
The exterior sheets 13 and 14 constituting the exterior body 12 may be liquid-impermeable or liquid-permeable.
-As a disposable diaper, the tape-type diaper which connects a front body and a back body with a face tape etc. may be sufficient.
-It may be a disposable diaper for infants or adults such as the elderly or disabled persons who need nursing care.

  DESCRIPTION OF SYMBOLS 10 ... Diaper, 10A ... Trunk opening, 10F ... Front body, 10R ... Back body, 10C ... Crotch, 10W ... Trunk circumference, 10L ... Leg opening, 11 ... Joint part, 12 ... Exterior body, 12F ... 1st exterior body, 12R ... 2nd exterior body, 12U ... Upper exterior body, 12D ... Lower exterior body, 13 ... Exterior sheet, 14 ... Exterior sheet, 15 ... Elastic member, 15U ... Upper elastic member, 15D ... Lower elastic member 16: Absorbent body, 17: Back sheet, 18: Absorber, 19: Top sheet, 21: Solid gather, 21S: Side sheet, 21E: Stretch member, 22: Hot melt adhesive, 22A: Adhesive region, 22U: Upper adhesive region, 22D: Lower adhesive region, 23: Seal portion, 30: Diaper, 31: Adhesive portion, 32 ... Non-adhesive portion, 33 ... Open end, 34 ... Pocket, 40 ... Diaper, 50 ... Diaper, 0 ... diapers, 61 ... notch end, 70 ... diapers.

Claims (5)

A first exterior part constituting the front body;
A second exterior part constituting the back body;
Both ends in the front-rear direction are absorbent main bodies that overlap and adhere to the first exterior part and the second exterior part, and the three-sided gathers are provided on both side edges along the front-rear direction on the inner surface that contacts the skin. With an absorbent body,
The first exterior part and the second exterior part are connected to both ends of the waistline direction to form a waistline part,
At least one exterior part of the first exterior part and the second exterior part includes an upper region along the trunk periphery and a lower region adjacent to the lower side of the upper region,
The upper region includes an upper elastic member that expands and contracts in the trunk circumference direction,
The lower region includes a lower elastic member that expands and contracts in the direction around the trunk,
The upper elastic member is disposed inside the waist portion with respect to the absorbent main body in a state where the waist portion is formed,
The lower elastic member is disposed outside the waist portion with respect to the absorbent main body in a state where the waist portion is formed,
The disposable diaper which the position of the edge part in the front-back direction of the said three-dimensional gather exists in the area | region above the lower end of the said trunk periphery part. In the lower region, a region where the exterior portion overlaps the absorbent main body is a lower adhesive region,
The disposable diaper according to claim 1, wherein the lower elastic member in an extended state is not disposed in the lower bonding region. In the upper region, the region where the exterior part overlaps the absorbent main body is an upper adhesive region,
The upper adhesive region includes an adhesive portion and a non-adhesive portion,
The disposable diaper according to claim 1, wherein the non-adhesive portion has a pocket shape in which a crotch portion side is an open end and a periphery excluding the open end is surrounded by the adhesive portion. In the lower region, a region where the exterior portion overlaps the absorbent main body is a lower adhesive region,
The disposable diaper according to claim 3, wherein the lower elastic member is disposed in an extended state in the lower adhesion region. The disposable diaper according to any one of claims 1 to 4, wherein the exterior portion disposed in the lower region and the exterior portion disposed in the upper region are a series.

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