JP5306800B2 - Disposable diapers - Google Patents

Description

The present invention relates to a disposable diaper , and more particularly to a disposable diaper capable of preventing excrement from contacting the skin.

Conventionally, disposable diapers having a function capable of preventing excrement from coming into contact with skin are known. For example, Patent Document 1 discloses a disposable diaper including a separation sheet disposed on an inner sheet, and an elastic stretchable member is disposed on the peripheral edge of the opening of the separation sheet.
JP 2002-11044 A

  In the diaper disclosed in Patent Document 1, by arranging the opening of the separation sheet so as to face the wearer's anus when worn, the stool is made to enter the excrement storage part located on the lower side of the separation sheet. Can be prevented from coming into contact with the skin. Thereby, since stool does not adhere to a wearer's buttocks after defecation, discomfort and rash due to stool adherence can be prevented.

  Moreover, since the elastic elastic member is arrange | positioned at the opening edge part of a separation sheet, an opening edge part can be closely_contact | adhered to a wearer's crotch part, and the excrement which is located in the lower side of a separation sheet smoothly It can be led to the receiving part.

  However, since the separation sheet is in direct contact with the wearer's skin, there is a possibility that a part of the separation sheet is bent or wrinkles are caused by the movement of the wearer during wearing. At this time, the shape of the opening is deformed by being partly bent, so that the stool is difficult to pass through the opening, particularly when the opening is crushed and narrowed, and the surface of the separation sheet There is a risk that stool adheres to the skin of the wearer.

  Then, in this invention, while making a separation sheet closely_contact | adhere to a wearer's body, it makes it the subject to provide the disposable diaper provided with the elastic elastic member which can hold | maintain an opening part in a desired shape.

  In order to solve the above-mentioned problems, the present invention is directed to the vertical axis, the horizontal axis, the skin contact surface side and the non-skin contact surface side opposite thereto, the front waist region, and the rear waist region. A diaper main body having a crotch region located between the front and rear waist regions, a separation sheet having an opening for passing excrement disposed on the skin contact surface side of the diaper main body, and the diaper main body And a disposable diaper including a waste container that communicates with the opening.

The feature of the present invention is that the separation sheet is disposed in the crotch region of the diaper main body, a front portion located near the front waist region, and a rear portion located near the rear waist region. An intermediate portion positioned between the front portion and the rear portion, and the opening is defined by a front opening defined by the front portion and a rear opening defined by the rear portion. A pair of front elastic expansion / contraction members extend from both sides of the front edge of the separation sheet so as to be symmetrical with respect to the longitudinal axis so as to be contractible to the rear edge of the front opening, rear resilient and elastic members, the are with respect to the longitudinal axis from opposite sides of the trailing edge of the spaced sheet so as to be symmetrical extends contractible prior periphery of the rear opening, the intermediate portion of the separation sheet is the Virtual center fold extending in the direction of the horizontal axis And lines, a symmetry with respect to the horizontal axis each other, by being bent through a virtual front folding lines extending in the direction of the horizontal axis and the virtual rear folding lines, and the front opening and the rear opening Are disposed adjacent to each other in the center of the crotch region in the direction of the longitudinal axis, and the pair of front elastic stretch members and the pair of rear elastic stretch members are separated in the longitudinal direction at the intermediate portion Is located .

The present invention includes the following preferred embodiments in addition to the features described above.
(1) Both side edge portions of the front and rear waist regions are joined by a plurality of seal portions arranged intermittently in the longitudinal axis direction, and the outer end portion located in the front waist region of the front elastic stretch member and the An outer end portion located in the rear waist region of the rear elastic elastic member overlaps the seal portion.
(2) The said front elastic elastic member and the said back elastic elastic member are formed from the sheet | seat member which has elastic elasticity.
(3) The said front elastic elastic member and the said back elastic elastic member are formed from the strand-shaped elastic element which consists of multiple strips.
(4) Leg elastic elastic members extending in the longitudinal direction are attached to both side portions of the crotch region.

  In the present invention, the separation sheet has a front opening and a rear opening, the pair of front elastic members are disposed so as to be contractible between the front waist region and the front opening, and the pair of rear elastic members Since the elastic member is disposed so as to be capable of contracting between the rear waist region and the rear opening, the shapes of the front opening and the rear opening are maintained by the contracting action of the front elastic expansion member and the rear elastic expansion member. There is no risk of significant loss of shape. Furthermore, since the front elastic member and the rear elastic expansion / contraction member do not intersect, there is no fear of giving excessive elongation stress to the wearer's body, and the separation sheet can be brought into close contact with the wearer's body by appropriate elongation stress. it can.

<First Embodiment>
FIG. 1 is a side view showing a state in which the inside of the diaper 10 in the first embodiment is exposed, and FIG. 2 is a partially broken plan view of the diaper 10.

  As shown in FIGS. 1 and 2, the diaper 10 includes a vertical axis P, a horizontal axis Q, a skin contact surface side and a non-skin contact surface side opposite thereto, front and rear waist regions 11 and 12, and front and rear waist regions. The diaper main body 10a which has the crotch area 13 located between 11 and 12 and the separation sheet 14 arrange | positioned at the skin contact surface side of the crotch area 13 are included.

  The diaper main body 10a is formed from a fiber nonwoven fabric, a porous plastic film, a laminate thereof, and the like, and includes a liquid-permeable inner surface sheet 16 positioned on the skin contact surface side, a moisture-permeable plastic film, a fiber nonwoven fabric, a laminate thereof, and the like. Formed from a liquid-impervious outer surface sheet 17 formed on the non-skin contact surface side, a mixture of fluff pulp and superabsorbent polymer particles, and the like, between the inner surface sheet 16 and the outer surface sheet 17, And an absorbent core 18 secured via a hot melt adhesive (not shown).

  Both side edges 11b and 11b of the front and rear waist region 11 and both side edges 12b and 12b of the rear waist region 12 are intermittent in the direction of the vertical axis P through known heat welding means such as heat sealing or an adhesive. The diapers 10 are formed in a pull-on / pants shape, and are formed with a waist opening and a pair of leg openings.

  The leg opening edges 13b and 13b and the side edges 18b and 18b of the liquid-absorbent core 18 are formed in a concave shape with their central areas toward the vertical axis P. The absorbent core 18 is preferably encapsulated with a liquid diffusive sheet such as tissue paper in order to improve shape retention and liquid diffusibility, and further, in order to improve the leak-proof effect of body fluid, It is preferable that a barrier sheet formed of a liquid-permeable and breathable plastic film covers the entire bottom surface of the absorbent core 18.

  The diaper main body 10a is formed by an inner sheet 16 and an outer sheet 17 extending in the direction of the vertical axis P from the front and rear end edges of the liquid-absorbent core 18, and is opposed to the direction of the vertical axis P in the horizontal axis Q. In the direction of the horizontal axis Q formed by the front and rear end edges 19 and 20 extending in the direction, and the inner sheet 16 and the outer sheet 17 extending in the direction of the horizontal axis Q from both side edges 18b of the liquid-absorbent core 18. Further included are both side edges 22 and 23 that face each other and extend in the direction of the longitudinal axis P. Between the inner sheet 16 and the outer sheet 17 at the front and rear end edges 19 and 20, a plurality of strand-like waist elastic elastic members 25a and 25b are attached via a hot melt adhesive.

  The separation sheet 14 is formed from a laminate sheet of a top sheet 28 and a bottom sheet 29 formed from a film made of a thermoplastic synthetic fiber nonwoven fabric or a thermoplastic synthetic resin, and is substantially liquid-impermeable as a whole. In consideration of the air permeability of the crotch region 13, it is more preferable that the air permeability is substantially impermeable.

  The separation sheet 14 includes a front portion 30 located on the front waist region 11 side of the crotch region 13, a rear portion 31 located on the rear waist region 12 side of the crotch region 13, and the front portion 30 and the rear portion 31. An intermediate portion 32 positioned between them, front and rear end edges 14a and 14b extending in the direction of the horizontal axis Q in the direction of the vertical axis P, and both sides facing in the direction of the horizontal axis Q and extending in the direction of the vertical axis P Edge 14c, 14c. The front and rear end edges 14a, 14b are fixed to the skin contact surface side of the crotch region 13 via a hot melt adhesive, and both side edges 14c, 14c are leg opening edges via the hot melt adhesive. It is fixed to 13b, 13b.

  The separation sheet 14 includes a front opening 34 for allowing urine to pass therethrough and a rear opening 35 for allowing stool to pass therethrough. As will be described later, in the separation sheet 14, a part of the intermediate portion 32 is bent at the intermediate portion 32 to form a separation wall portion 37, and the front opening portion 34 and the rear opening portion 35 have a horizontal axis. In the vicinity of Q, they are arranged so as to be adjacent to each other in the direction of the vertical axis P via the separation wall portion 37. Below the front part 30 and the rear part 31, a front excrement storage part 42 and a rear excrement storage part 43 separated by the separation wall part 37 are formed, respectively.

  In the present embodiment, the front opening 34 and the rear opening rear part 35 are circular, but an optimal shape for passing excrement such as an ellipse or a rhombus can be adopted. However, as in the case of a circle, an ellipse, and a rhombus, the front opening 34 has an interval between the opposing peripheral edges of the substantially rear half, and the rear opening 35 has an interval between the opposing peripheral edges of the approximately the front half thereof to the horizontal axis Q The shape which has a site | part which mutually adjoins toward is preferable.

  A pair of front elastic elastic members 38 and 39 that are symmetrical with respect to the longitudinal axis P and extend from both sides of the front edge 14a of the separation sheet 14 along the rear edge of the front opening 34 are attached to the front portion 30. It has been.

  The rear portion 31 has a pair of rear elastic elastic members 40, 41 that are symmetrical with respect to the longitudinal axis P and extend from both sides of the rear end edge portion 14 b of the separation sheet 14 along the front edge of the rear opening 35. It is attached.

  The front elastic members 38 and 39 and the rear elastic members 40 and 41 are opposed to and separated from each other at the intermediate portion 32 of the separation sheet 14 and do not intersect each other.

  The front elastic elastic members 38 and 39 are positioned at inner end portions 38 a and 39 a along the rear periphery of the front opening 34 and both side edge portions 11 b and 11 b of the front waist region 11, and outer end portions 38 b that overlap the seal portion 100. 39b, and the rear elastic elastic members 40 and 41 overlap the inner end portions 40a and 41a along the front peripheral edge of the rear opening 35 and the seal portions 100 of both side edge portions 12b and 12b of the rear waist region 12. And outer end portions 40b and 41b. The front / rear elastic elastic members 38, 39, 40, 41 have inner end portions 38a, 39a, 40a, 41a formed narrower toward the intermediate portion 32, and outer end portions 38b, 39b, 40b, 41b. The elongation stress is made lower than the other parts including the.

  Elasticity in which a flat rubber or tape-like urethane foam (preferably of open cells) is stretched and sandwiched between two fiber nonwoven fabrics between the front elastic members 38 and 39 and the rear elastic members 40 and 41. An elastic sheet, a tape-like elastic fiber nonwoven fabric formed from a mixed yarn of polypropylene and polyurethane, and the like can be used.

  In the present invention, as described above, the front elastic members 38 and 39 and the rear elastic members 40 and 41 extend along the rear edge of the front opening 34 and the front edge of the rear opening 35, respectively. 14 intermediate portions 32 do not cross each other. Accordingly, the shapes of the front and rear openings 34 and 35 are held by the tension of the front and rear elastic elastic members 38, 39, 40, and 41 along the respective peripheral edges, and the peripheral parts of the front and rear openings 34 and 35 are formed. It can be in close contact with the wearer's skin.

  If the front elastic members 38, 39 and the rear elastic members 40, 41 intersect at the intermediate portion 32, the crossing site may irritate the skin and cause discomfort or rash. In addition, since a plurality of wrinkles are generated in the sheet member in the crotch region, the front and rear openings 34 and 35 of the separation sheet 14 are crushed and become narrow, and the excrement hardly flows into the excrement storage part. There is a risk.

  According to the present embodiment, the front and rear elastic elastic members 38, 39, 40, and 41 do not intersect with each other, so that excessive stretching stress does not act on the central portion of the crotch region 13, and the skin is stimulated. There is no fear. Further, since the front elastic members 38 and 39 extend to the rear periphery of the front opening 34 and the rear elastic members 40 and 41 extend to the front periphery of the rear opening 35, they are stretched when the diaper 10 is worn. It is possible to prevent the peripheral portions of the front and rear openings 34 and 35 from being pulled toward both sides of the crotch region 13 due to the stress, thereby reducing the shape of the front and rear openings 34 and 35.

  Further, since the front elastic expansion members 38 and 39 and the rear elastic expansion members 40 and 41 extend to the rear periphery of the front opening 34 and the front periphery of the rear opening 35, respectively, the front elastic expansion member 38, Compared to the case where 39 extends to the edge of the front opening 34 on the front waist region 11 side and the case where the rear elastic members 40 and 41 extend to the rear waist region side of the rear opening 35, The distance between the inner end portions 38a, 39a of the front elastic expansion / contraction member and the inner end portions 40a, 41a of the rear elastic expansion / contraction member can be reduced, and when the diaper 10 is worn, the portion in the vicinity of the horizontal axis Q of the diaper 10 Can be more closely attached to the wearer's body.

  Further, the outer end portions 38 b and 39 b of the front elastic stretch members 38 and 39 overlap the seal portions 100 located at both side edges 11 b and 11 b of the front waist region 11, and the outer ends of the rear elastic stretch members 40 and 41. Since the portions 40b and 41b overlap the seal portions 100 of both side edges 12b and 12b of the rear waist region, the outer ends 38b and 39b of the front elastic stretch members 38 and 39 and the rear in the wearing state of the diaper 10 The outer end portions 40b and 41b of the elastic elastic members 40 and 41 are connected to each other to form an arc-shaped elastic elastic band that extends in series.

  Furthermore, in this embodiment, the front elastic expansion members 38 and 39 and the rear elastic expansion members 40 and 41 bring the separation sheet 14 into close contact with the wearer's skin so that the front opening 34 and the rear opening 35 are formed. It has two functions of preventing the deviation from a required position and preventing the excrement from leaking from the leg opening edge 13b.

  In order to exhibit the two functions, it is preferable that the extension stress between the front elastic members 38 and 39 and the rear elastic members 40 and 41 is 1 to 5 N / mm. In the case of 1 N / mm or less, the above-mentioned two functions, in particular, the function of preventing the side leakage of excrement cannot be exhibited. In the case of 5 N / mm or more, the front / rear elastic members 38 and 39 are used. , 40 and 41 tighten the wearer's skin more than necessary, and there is a risk that the wearer's skin will be tightened.

  3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIG. 3, the front opening 34 of the separation sheet 14 communicates with a front excrement storage part 42 defined between the front part 30 and the diaper main body 10 a, and the rear opening 35 It communicates with a rear excrement storage part 43 defined between the part 32 and the diaper main body 10a.

  As described above, in the state where the separation sheet 14 is suspended from the diaper main body 10a, the front opening 34 and the rear opening 35 are respectively located at the lower front waste storage portion 42 and the rear waste storage portion 43. The excrement excreted on the front and rear openings 34 and 35 passes through the front opening 34 and the rear opening 35 and is stored in the front and rear storage parts 42 and 43 positioned below. Is done. Thereby, since excrement does not stay in the peripheral part of front-and-back opening part 34 and 35 of separation sheet 14, skin does not get dirty by excretion after excretion, and there is no possibility that skin may be covered with excrement adhering to skin. .

  As will be described later, in the separation wall portion 37, a front central region 45 located in the central portion of the front portion 30 and a rear central region 46 located in the central portion of the rear portion 31 are joined via a hot melt adhesive 47. Has been formed. The lower end edge 37a of the separation wall portion 37 is fixed to the skin contact surface side of the diaper main body 10a through a hot melt adhesive. However, the lower end edge 37a of the separation wall portion 37 may not be fixed with the hot melt adhesive and may be in a free state.

  Since the front waste storage part 42 and the rear waste storage part 43 are separated from each other by the separation wall part 37, urination excreted in the vicinity of the front opening 34 flowing into the front waste storage part 42; The feces excreted in the vicinity of the rear excrement container 35 do not mix with each other, and it is possible to prevent the generation of malodor caused by the mixing.

  Further, since the separation wall portion 37 is formed, the length of the separation sheet 14 is reduced, and the front portion 30 and the rear portion 32 of the separation sheet 14 are extended when the diaper 10 is worn. The elongation stress acts to allow the separation sheet 14 to be brought into close contact with the wearer's skin.

  The separation wall portion 37 preferably has a height of 40 to 60 mm. When the height of the separation wall portion 37 is 40 mm or less, there is a possibility that excrement stored in the front waste storage portion 42 and the rear waste storage portion 43 will get over the separation wall portion 37 and leak to the outside. When the height of the separation wall 37 is 60 mm or more, the separation sheet 14 closes the leg opening of the diaper 10 from the inside when they cannot function as a pocket for storing excrement. This is because, when the diaper 10 is worn, it may be difficult to insert the foot into the leg opening.

  In the present embodiment, the separation sheet 14 is disposed in the crotch region 13, but may extend not only to the crotch region 13 but also to the front and rear waist regions 11, 12, that is, over the entire surface of the inner surface sheet 16. It may be arranged.

  4 and 5 are views showing a state before the central portion 32 of the separation sheet 14 is bent and a state after the central portion 32 is bent (use state).

  As shown in FIG. 4, the intermediate portion 32 of the separation sheet 14 has a virtual central folding line 49 extending in the direction of the horizontal axis Q in the vicinity of the horizontal axis P and is symmetrical with respect to the horizontal axis Q and is in the direction of the horizontal axis Q. A virtual forward fold curve 50, a virtual rear fold curve 51, a pair of virtual forward fold curves 52, 53 extending obliquely from both end edges 50a, 50b of the virtual forward fold curve 50 toward the vertical axis P, and a virtual rear A pair of virtual rearward inclined folding curves 54 and 55 extending obliquely from both end edges 51a and 51b of the folding curve 51 toward the vertical axis P are formed. The virtual forward inclined folding curves 52 and 53 and the virtual backward inclined folding curves 54 and 55 are formed so as to be symmetric with respect to the horizontal axis Q.

  Further, in the intermediate portion 32 of the separation sheet 14, a front center region 45 located between the virtual front inclined folding curves 52 and 53, a rear center region 46 located between the virtual rear inclined folding curves 54 and 55, and the separation sheet 14 between both side edges 14c, 14c of the front side 14 and the virtual front inclined folding lines 52, 53, and both side edges 14c, 14c of the separation sheet 14 and the virtual rear side inclined folding curves 54, 55. A rear both-side area 59, 60 located between them is defined. Hot melt adhesive 47 is applied in the form of dots on the skin contact surface side of the central portion of the front central region 45, and the virtual front folding curve 50 and the virtual rear folding curve 51 are overlapped with each other. A central joint line 62 extending in the axis Q direction is formed (see FIG. 5). The hot melt adhesive 47 is preferably not applied on the virtual forward folding curve 50. This is because, when applied on the virtual forward folding line 50, the hot melt adhesive 47 oozes out from the central joining line 62 and may irritate the wearer's skin.

  The folding procedure of the separation sheet 14 is as follows. First, the separation sheet 14 is placed via the virtual center folding line 49 so that the skin contact surface side of the front portion 30 of the separation sheet 14 faces the skin contact surface side of the rear portion 31. Folded in the direction of the vertical axis P, and then the virtual forward inclined folds 52 and 53 and the virtual backward inclined folds so that the skin contact surface side of the front side regions 57 and 58 and the rear side regions 59 and 60 overlap. The curves 54 and 55 are bent (tucked).

  At this time, the front center area 45 and the rear center area 46 opposite to the front center area 45 also overlap and are joined to each other via the hot-melt adhesive 47 applied to the surface of the front center area 45. 46, a separation wall 37 is formed.

  In addition to the illustrated embodiment, the hot melt adhesive 47 is applied only to both sides without applying the hot melt adhesive 47 to the central portion of the front central region 50, and the lower end of the central portion (virtual You may cut | disconnect the vicinity of the center folding line 49). In this case, the central part in the non-adhered state serves as a pocket, and excreta staying in the vicinity of the central joint line 62 can be accommodated in the front and rear excrement storage parts 34 and 35 located below.

  Since the separation sheet 14 bends one sheet member, the front opening 34 and the rear opening 35 can be adjacent to each other in the direction of the vertical axis P at the center of the crotch region 13. 14 is formed using a plurality of sheet members, for example, compared to the case where the front portion 30 and the rear portion 31 are formed as separate sheets, or the case where the separation wall portion 37 is formed as a separate sheet member. Thus, the manufacturing process can be simplified and the manufacturing cost can be reduced.

Second Embodiment
FIG. 6 is a view similar to FIG. 5 showing the second embodiment. Since the configuration of the diaper in this embodiment is basically the same as that of the above-described embodiment, only the differences will be described.

  In this embodiment, the front elastic elastic members 38 and 39 and the rear elastic elastic members 40 and 41 are not formed of an elastic elastic sheet but formed of a strand-like elastic elastic member. In the illustrated example, two strand-like elastic elastic members are used in place of the elastic elastic sheet, but two or more strand-like elastic elastic members can be used depending on the required elongation stress, The distance between the elastic elastic members can also be appropriately selected. Thus, a tape-like elastic stretchable region can be formed by separating and juxtaposing a plurality of strand-shaped elastic stretchable members.

  When a strand-like elastic stretchable member is used instead of the elastic stretchable sheet, a strand-like elastic stretchable member is interposed between the upper surface sheet 28 and the lower surface sheet 29 forming the separation sheet 14, and hot melt bonding is performed. It can be fixed via an agent. In this case, since the elastic elastic member in the form of a strand does not come into direct contact with the skin, there will be no pressure marks on the wearer's skin.

<Third Embodiment>
FIG. 7 is a development view of the diaper 10 similar to FIG. 2 showing the third embodiment of the present invention. Since the configuration of the diaper in the present embodiment is basically the same as that of the first embodiment, only the differences will be described.

  In the present embodiment, leg elastic elastic members 62 and 63 extending in the longitudinal direction Y are disposed on both side edges 22 and 23 of the diaper main body 10a. When the leg elastic expansion / contraction members 62 and 63 are arranged in this way, the fit around the leg is improved and the tensile stress between the front elastic expansion / contraction members 38 and 39 and the rear elastic expansion / contraction members 40 and 41 is further increased. The pressure on the skin can be reduced.

  FIG. 8 is a diagram illustrating a part of the manufacturing process of the separation sheet 14.

  In FIG. 8, the web 64 forming the outer sheet 17 is moved in the machine direction (MD), and elastic elastic sheets 65 and 66 are attached to the surface. Specifically, the arms 67 and 68 are disposed on the web 64 and the elastic stretchable sheets 65 and 66 are stretched by the heads 67a and 68a positioned at the ends of the arms 67 and 68, while the arms 67 and 68 are moved. It is swung in a direction (CD) perpendicular to MD and fixed to the inner surface of the original fabric sheet 64 via a hot melt adhesive.

  After the elastic stretchable sheets 65 and 66 are fixed to the web 64, the circularly cut portions 71a, 71b, 72a and 72b of the elastic stretchable sheets 65 and 66 that are curved inwardly in the units 69 and 70 are formed. The punching process is performed along the lines 73a and 73b to form the front and rear openings 34 and 35, and by punching with a substantially rhombic cutting line 74, both side edges 14c of the separation sheet 14 that are recessed inwardly. The outer shape of 14c is formed.

  According to this manufacturing process, when the front and rear openings 34 and 35 are punched out, the elastic stretchable sheets 65 and 66 can be cut at the same time, so that the front and rear elastic stretchable members 38, 39, 40, and 41 are required. The manufacturing process can be simplified as compared with the case where the sheet is cut into dimensions and fixed to the separation sheet 14.

For each member constituting the present invention , a material usually used in this type of diaper can be used without limitation. In the present invention, the front and rear waist areas and the crotch area of the diaper are formed of a series of sheet members, but these areas may be formed of separate panel-like members.

The side view of the diaper in 1st Embodiment. The partially broken expansion | deployment top view of a diaper. III-III sectional view taken on the line of FIG. The top view of the separation sheet before bending. The top view of the separation sheet after bending. The top view of the diaper in 2nd Embodiment. The top view of the diaper in 3rd Embodiment. The figure which shows a part of manufacturing process of a separation sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disposable diaper 10a Diaper main body 11 Front waist area 12 Rear waist area 13 Crotch area 14 Separation sheet 14a Separation sheet front end edge part 14b Separation sheet rear end edge part 30 Front part 31 Rear part 32 Middle part 34 Front opening part 35 Rear Openings 38, 39 Front elastic elastic members 40, 41 Rear elastic elastic member 42 Front excrement accommodation part 43 Rear excrement accommodation parts 62, 63 Leg elastic elastic member vertical axis P
Horizontal axis Q

Claims (5)

A vertical axis and a horizontal axis, a skin contact surface side and a non-skin contact surface side opposite thereto,
A diaper main body having a front waist region, a rear waist region, and a crotch region positioned between the front and rear waist regions, and an opening for passing excrement disposed on the skin contact surface side of the diaper main body. In a disposable diaper including a separation sheet, and a stool container formed between the diaper main body and the separation sheet and communicating with the opening.
The separation sheet is disposed in the crotch region of the diaper main body, a front portion located near the front waist region, a rear portion located near the rear waist region, the front portion, and the rear portion. And an intermediate part located between
The opening is formed of a front opening defined in the front part and a rear opening defined in the rear part;
A pair of front elastic elastic members extend so as to be shrinkable from both sides of the front edge portion of the separation sheet to the rear edge of the front opening so as to be symmetric with respect to the longitudinal axis, and the pair of rear elastic elastic members, Extending from both sides of the rear edge of the separation sheet to the front edge of the rear opening so as to be symmetric with respect to the longitudinal axis,
The virtual center folding line in which the intermediate portion of the separation sheet extends in the direction of the horizontal axis, and the virtual forward folding curve and the virtual rear folding curve that are symmetrical with respect to the horizontal axis and extend in the direction of the horizontal axis. Are arranged such that the front opening and the rear opening are adjacent to each other in the direction of the vertical axis at the center of the crotch region ,
The diaper characterized in that the pair of front elastic elastic members and the pair of rear elastic elastic members are spaced apart in the longitudinal direction at the intermediate portion.   Both side edge portions of the front and rear waist regions are joined by a plurality of seal portions arranged intermittently in the longitudinal axis direction, and an outer end portion located in the front waist region of the front elastic stretch member and the rear elastic stretch The diaper according to claim 1, wherein an outer end portion of the member located in the rear waist region overlaps the seal portion.   The diaper according to claim 1 or 2, wherein the front elastic elastic member and the rear elastic elastic member are formed from a sheet member having elastic elasticity.   The diaper in any one of Claims 1-3 in which the said front elastic expansion-contraction member and the said back elastic expansion-contraction member are formed from the strand-shaped elastic element which consists of multiple strips.   The diaper in any one of Claims 1-4 by which the leg elastic elastic member extended in the said vertical direction is attached to the both sides of the said crotch area.

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