JP4522281B2 - Disposable diapers - Google Patents

Description

  The present invention relates to an absorbent article that receives excrement from a wearer.

  Conventionally, as an absorbent article used for disposable diapers or the like, a main body provided with an absorbent body formed of pulverized pulp or the like between a liquid-permeable top sheet and a liquid-impermeable back sheet, and What is provided with the three-dimensional gather which is attached to the both sides of a main-body part and prevents leakage of urine etc. is used. In such an absorbent article, a three-dimensional gather is in contact with the skin near the base of the wearer's foot to prevent leakage of excrement, and a backsheet that covers the opposite side of the absorbent article from the wearer side In addition, excretion such as urine that has permeated through the top sheet or excretion once absorbed by the absorbent body is prevented from exuding to the outside of the absorbent article.

Regarding the absorbent article having such a three-dimensional gather, in Patent Document 1, a liquid-permeable surface sheet of a disposable paper diaper and a gathered nonwoven fabric for forming a three-dimensional gather are wound around the side edge of the absorber on the back side of the absorber. A technique for improving the appearance without forming side flaps around the legs by fixing is disclosed. Moreover, in the disposable paper diaper of patent document 1, even if it is a case where the width | variety of an absorber is narrowed by extending a liquid-permeable surface sheet to the absorber back surface side, an absorption surface area is ensured.
JP 2001-340380 A

  By the way, in a disposable diaper, when excretion is made in the state where the wearer's body pressure is applied, such as sitting position or supine position, or when the body pressure is applied to the disposable diaper after excretion, in the approximate center of the absorber The absorbed moisture such as urine diffuses to both sides of the absorbent body in the longitudinal direction and is held at the front and rear portions of the absorbent body. However, when there is a relatively large amount of excrement, water once absorbed by the absorbent body may ooze out of the absorbent body from both sides in the width direction of the absorbent body.

  In the disposable paper diaper of patent document 1, since the edge in the width direction of the back sheet is substantially coincided with the edge of the absorber around the leg, and the side edge of the absorber is covered with the liquid-permeable surface sheet, the wearer's body Moisture is pushed out from both sides of the absorbent body in the width direction by the pressure, and permeates the liquid-permeable surface sheet. Furthermore, since the gathered nonwoven fabric is bonded to the side edge of the absorbent body, moisture from the absorbent body that has passed through the liquid-permeable surface sheet is pressed against the gathered nonwoven fabric at a high pressure that exceeds the water pressure resistance of the gathered nonwoven fabric. There is a risk of leaking outside the disposable diaper through the gathered nonwoven fabric.

  This invention is made | formed in view of the said subject, and it aims at preventing the water | moisture content absorbed by the absorber from leaking from the side of an absorber to the exterior of a side wall part.

Invention of Claim 1 is a disposable diaper which receives the excretion from a wearer , Comprising : An exterior member and the absorbent article attached to the wearer side of the said exterior member, The said absorbent article is And an absorbent body having a portion located along the abdomen, crotch part and back part of the wearer along a predetermined longitudinal direction when worn, and an outer main surface opposite to the wearer side of the absorbent body , at least the flank of the absorber, both sides of the predetermined part position corresponding to the crotch portion or the back, joined to the main surface of the wearer's side is folded to the main surface side of the wearer's side of the absorbent body a core barrier sheet of water-repellent or liquid-impervious are, in both sides of the predetermined portion of the absorbent body to cover the main surface of the wearer's side of the absorbent body, to the outside of the absorber the core barrier sheet out the intake folded and A liquid-permeable top sheet which is bonded to the back sheet portion covering the outer principal surface of the body, substantially over the entire length of the longitudinal direction provided on both sides of the top sheet, both ends of the longitudinal direction the A pair of side wall portions that are joined on the top sheet and rise to the wearer side, and the pair of side wall portions cover the folded portion of the top sheet on the outside of the absorber.

Invention of Claim 2 is the disposable diaper of Claim 1, Comprising : The said predetermined | prescribed site | part is the whole said absorber, The width | variety of the direction perpendicular | vertical to the said longitudinal direction of the said absorber is the said absorption. It is almost constant over the entire length of the body.

According to a third aspect of the invention, a disposable diaper according to claim 1, wherein the predetermined portion of the absorber corresponds to the abdomen or the back of the wearer, the said predetermined portion of the absorbent body The width in the direction perpendicular to the longitudinal direction is larger than the width of the portion corresponding to the crotch portion.

Invention of Claim 4 is a disposable diaper of Claim 3 , Comprising : The said predetermined site | part of the said absorber respond | corresponds to a wearer's abdomen and back part.

In this invention, it can prevent that the water | moisture content absorbed by the absorber leaks outside from the side of an absorber. In addition , the main body can be easily formed. In the invention of claim 3 , while the absorbent article is fitted to the wearer's body, moisture absorbed by the absorbent body is exposed from the side of the absorbent body to the outside at a site corresponding to the abdomen or back where body pressure is likely to be applied. It is possible to efficiently prevent leakage.

  FIG. 1 is a diagram illustrating an appearance of a pants-type disposable diaper 10 including an absorbent article 1 according to the first embodiment of the present invention. The absorbent article 1 is a so-called pad portion that is provided from the wearer's stomach side to the back side and receives excrement from the wearer, and is centered on the lower portion of the exterior member 101 as a member independent of the exterior member 101. Attached.

  FIG. 2 is a plan view of the disposable diaper 10 as viewed from the side facing the wearer in a state in which the disposable diaper 10 is unfolded and extended, and FIGS. 3 and 4 illustrate AA and B showing the disposable diaper 10 in FIG. It is sectional drawing cut | disconnected by the surface perpendicular | vertical to a Y direction in the position of -B. As shown in FIGS. 2 to 4, the disposable diaper 10 is provided on the exterior member 101 that is a two-layer sheet-like member and on the wearer side of the exterior member 101 (that is, the (+ Z) side in FIG. 2). The absorbent article 1 includes a substantially sheet-like main body 2 and the longitudinal direction of the main body 2 over substantially the entire length in the longitudinal direction (that is, the Y direction) of the main body 2. A pair of side wall portions 3 provided on both sides in the vertical width direction (that is, the X direction) is provided. In FIG. 2 thru | or FIG. 4, the main surface by which the side wall part 3 of the main-body part 2 is provided, ie, the (+ Z) side main surface turns into a surface which contact | connects a wearer.

  As shown in FIGS. 2 to 4, the main body 2 includes an absorbent core 22 that is an absorbent body, a topsheet 21 that covers the main surface of the absorbent core 22 on the wearer side, and both sides of the absorbent core 22 and the wearer. A core leak-proof sheet 23 that covers an outer main surface that is the opposite side to the side and prevents moisture from leaking from the inside of the absorbent core 22 is provided. Note that the portion of the core leak-proof sheet 23 that faces the outside of the absorbent core 22 plays a role as a so-called back sheet. In other words, the core leak-proof sheet 23 has both sides of the back core on both sides of the absorbent core 22. It can be said that it was expanded to wrap the part.

  The top sheet 21 and the core leak-proof sheet 23 are joined to each other around the absorbent core 22 by a hot melt adhesive or the like, and the side wall portions 3 are joined to both sides of the top sheet 21. 3 and 4, the hot melt adhesive 4 used for joining the top sheet 21 and the like is shown with parallel oblique lines, and the thickness is drawn larger than the actual thickness (see FIG. 6 described later). The same applies to FIG. 7). Moreover, illustration is abbreviate | omitted about the hot-melt-adhesive used for joining of the absorbent article 1 and the exterior member 101. FIG.

  As shown in FIG. 2, the absorbent core 22 has portions along the longitudinal direction that are located along the wearer's abdomen, crotch, and back when worn. As shown in FIG. 2, the outline of the absorbent core 22 is indicated by a thick broken line, the width in the width direction is substantially constant over almost the entire length in the longitudinal direction (that is, when viewed in the Z direction, the absorbent core 22 22 is a substantially rectangular shape), and each of the pair of side wall portions 3 is joined to the main body portion 2 at both side portions of the absorbent core 22 in the width direction.

  The top sheet 21 is a non-woven fabric formed of a liquid-permeable material, for example, a hydrophilic fiber, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics. As hydrophilic fibers forming these nonwoven fabrics, cellulose, rayon, cotton, or the like is usually used. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

  The absorbent core 22 is made of a mixture of a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) such as a tissue paper or a liquid-permeable nonwoven fabric. It is formed by wrapping with a sheet and absorbs moisture that has passed through the top sheet 21 to quickly fix it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

  The core leak-proof sheet 23 is a water-repellent or liquid-impervious nonwoven fabric, and moisture that has permeated through the top sheet 21 and moisture that has been absorbed by the absorbent core 22 ooze out from the inside of the absorbent core 22 to the outside. To prevent. Nonwoven fabrics utilized as the core leak-proof sheet 23 are, for example, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and SMS (spunbond / meltblown / spunbond) nonwoven fabrics, and may be subjected to water repellent treatment as necessary. A water-repellent or liquid-impervious plastic film, a composite material of the nonwoven fabric and the plastic film, or the like may be used as the core leak-proof sheet 23. In this case, from the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability.

  As shown in FIG. 2, each of the pair of side wall portions 3 is a strip-like member that is long in the longitudinal direction, and as shown in FIGS. 2 to 4, two elastic members 31 extending in the longitudinal direction, and two A gather sheet 32 which is a two-layer sheet-like member sandwiching the elastic member 31 therebetween is provided. In each side wall 3, the elastic member 31 is joined to the gather sheet 32 by a hot melt adhesive or the like, and the elastic member 31 is in an expanded state when the absorbent article 1 is spread as shown in FIG. 2. Yes.

  In the absorbent article 1, both end portions in the longitudinal direction of the side wall portions 3 are joined to the wearer-side surface of the main body portion 2 by a hot melt adhesive 4 as shown in FIG. As shown in FIG. 3, the part between the parts is not joined to the wearer-side surface of the main body part 2. In the absorbent article 1, when the elastic member 31 contracts, a portion between both end portions in the longitudinal direction of the side wall portion 3 rises toward the wearer side on the side of the main body portion 2, and the wearer's foot when worn. A three-dimensional gather is formed in contact with the vicinity of the base.

  The gather sheet 32 of the side wall 3 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric), a plastic film, or a composite material thereof. From the viewpoint of improving the comfort of the absorbent article 1, the gather sheet 32 is preferably breathable. As the elastic member 31, polyurethane yarn, polyurethane film, natural rubber or the like is used.

  As shown in FIG. 3 and FIG. 4, the core leak-proof sheet 23 covers both sides of the absorbent core 22 in the entire longitudinal direction of the absorbent core 22 and prevents leakage of moisture from the inside of the absorbent core 22 to the side. An internal leak-proof portion 231 and a back sheet portion 232 that covers the main surface of the outer side of the absorbent core 22 (that is, the side opposite to the wearer side) and prevents leakage of moisture from the inside of the absorbent core 22 to the outer side. , Can be divided by paying attention to its function. That is, the core leak-proof sheet 23 includes an internal leak-proof part 231 and a back sheet part 232, and the back sheet part 232 is continuous with the internal leak-proof part 231 on both sides thereof. Of course, as described above, the core leak-proof sheet 23 can be regarded as an expansion of both sides of the back sheet portion 232 (back sheet) so as to wrap both sides of the absorbent core 22.

  In the absorbent article 1, the internal leakproof portions 231, which are the portions on both sides in the width direction of the core leakproof sheet 23, are disposed on the wearer side (and the main body portion parallel to the YZ plane) at both side portions of the absorbent core 22 in substantially the entire length. 2 is divided into left and right, the center plane 2S side), wound up on the wearer side to cover both sides of the absorbent core 22, and bonded to the wearer's main surface of the absorbent core 22 by the hot melt adhesive 4 Is done. Moreover, the site | part of the both sides of the width direction of the top sheet 21 is turned back outside (and the center surface 2S side) in the both sides of the absorption core 22, and is outside the absorption core 22 so that the internal leak-proof part 231 may be covered. It is rolled up and joined to the back sheet portion 232 of the core leak-proof sheet 23 by the hot melt adhesive 4.

  Further, the gather sheets 32 of the pair of side wall portions 3 are folded back to the outside (and the center surface 2S side) at both side portions of the main body portion 2, and are opposite to the wearer side of the top sheet 21 outside the absorbent core 22. It is wound around the outside of the main body 2 while covering the entire side portion (hereinafter referred to as “top sheet folded portion”) 211. The gathered sheet 32 is folded back on the back surface of the core leak-proof sheet 23 by the hot melt adhesive 4 on the center surface 2S side of the top sheet folding portion 211 on the center surface 2S side of the main body 2 of the top sheet folding portion 211. It is joined to the part 232. Further, the gather sheet 32 is joined to the top sheet 21 at both sides of the main body 2.

  As described above, in the absorbent article 1, the internal leak-proof portion 231 of the water-repellent or liquid-impervious core leak-proof sheet 23 covers the absorbent core 22 over substantially the entire length in the longitudinal direction of the main body portion 2. By covering both sides of the absorbent core 22 on both sides, when excretion occurs when the body pressure of the wearer is applied, such as sitting or supine position, or when body pressure is applied to the disposable diaper after excretion Even if the amount of excreta is relatively large, it is possible to prevent the water once absorbed by the absorbent core 22 from leaking from the side of the absorbent core 22 to the outside of the absorbent core 22.

  If the both sides of the absorbent core are not covered with the core leak-proof sheet, the moisture absorbed in the absorbent core leaks out of the absorbent core due to body pressure or the like. Moisture leaked from the absorbent core is pressed against the portion of the side wall portion joined to the main body portion with a high pressure because the side wall portion is joined to both side portions of the main body portion. When the water pressure of the gather sheet is exceeded, moisture leaks to the outside of the absorbent article. However, in the absorbent article 1, since both sides of the absorbent core 22 are covered with the core leak-proof sheet 23 as described above and moisture is prevented from leaking, the moisture once absorbed in the absorbent core 22 is The leakage through the side wall 3 to the outside of the absorbent article 1 is prevented.

  Further, the top sheet 21 is folded back to cover the internal leak-proof portion 231 so that the water-repellent or liquid-impervious internal leak-proof portion 231 is exposed and directly touches the skin of the wearer's crotch. It is prevented, and a comfortable wearing feeling can be maintained by preventing a decrease in wearing feeling due to stuffiness or stickiness. Further, even when a part of moisture such as urine is diffused through the top sheet 21 and moves to a part opposite to the wearer side (that is, the top sheet folding part 211), the gather sheet 32 Is folded outward to cover the top sheet folding portion 211, so that moisture is prevented from leaking outside the absorbent article 1 by retaining moisture between the core leak-proof sheet 23 and the gather sheet 32. The

  In the absorbent article 1, since the internal leak-proof portion 231 is continuous with the back sheet portion 232, that is, the internal leak-proof portion 231 is provided as a part of the core leak-proof sheet 23, the core leak-proof sheet 23 is The internal leak-proof portion 231 can be easily provided by folding back at both side portions of the absorbent core 22, and the main body portion 2 can be easily formed. Furthermore, in the absorbent article 1, since the width of the absorbent core 22 is substantially constant over almost the entire length in the longitudinal direction, the main body as compared with the absorbent article having an absorbent core having a different width for each site in the longitudinal direction. The part 2 can be formed more easily, and the production of the disposable diaper 10 in which the absorbent article 1 is used can be simplified.

  FIG. 5 is a plan view showing a pants-type disposable diaper 10 provided with the absorbent article 1a according to the second embodiment of the present invention, and FIGS. 6 and 7 show the disposable diaper 10 in FIG. It is sectional drawing cut | disconnected by the surface perpendicular | vertical to a Y direction in the position of CC and DD shown inside. As shown in FIGS. 5 to 7, the disposable diaper 10 has an absorbent article 1a attached to the wearer side of the exterior member 101 as in the first embodiment, and the absorbent article 1a. Is provided with a pair of side wall portions 3 provided on both sides in the width direction over substantially the entire length of the main body portion 2 and the longitudinal direction of the main body portion 2.

  The main body 2 includes an absorbent core 22a having a shape different from that of the first embodiment, a liquid-permeable top sheet 21 that covers the main surface of the absorbent core 22a on the wearer side, both sides of the absorbent core 22a, and the outside. A water-repellent or liquid-impervious core leakage-proof sheet 23 is provided. Each side wall 3 includes two elastic members 31 extending in the longitudinal direction, and a gather sheet 32 that is a two-layer sheet-like member sandwiching the two elastic members 31 therebetween. The materials of the top sheet 21, the absorbent core 22a, the core leak-proof sheet 23, the elastic member 31, and the gather sheet 32 are the same as those in the first embodiment.

  As shown in FIG. 5, in the absorbent core 22a, the front part 201, the intermediate part 202, and the rear part 203 which are positioned along the wearer's abdomen, crotch part and back part are lined up along the longitudinal direction when worn. 5, the width of the absorbent core 22a in the front part 201 and the rear part 203 corresponding to the abdomen and the back part is larger than the width of the absorbent core 22a in the intermediate part 202 corresponding to the crotch part. Increased. That is, the absorption core 22a is a so-called hourglass shape.

  As shown in FIG. 7, in the absorbent article 1 a, the inner leak-proof portion 231, which is a portion on both sides in the width direction of the core leak-proof sheet 23, covers the both sides of the absorbent core 22 a in the rear portion 203. (And the center surface 2S side) is folded back and joined to the wearer-side main surface of the absorbent core 22a (the same applies to the front portion 201). In the rear part 203 and the front part 201, both sides of the top sheet 21 in the width direction are on the outer side (that is, on the side opposite to the wearer side and on the center plane 2S side) on both side parts of the absorbent core 22a. And is wound around the outer side of the absorbent core 22 a so as to cover the internal leak-proof portion 231, and is joined to the back sheet portion 232 of the core leak-proof sheet 23 by the hot melt adhesive 4.

  Further, the gather sheet 32 of each side wall 3 is folded outward (and the side of the central surface 2S) on the side of the rear part 203 and the front part 201 of the absorbent core 22a, and the top sheet is folded back on the outer side of the absorbent core 22a. It is joined to the backsheet portion 232 of the core leak-proof sheet 23 on the center surface 2S side further than the edge on the center surface 2S side of the top sheet folding portion 211 while covering the portion 211. Further, the gather sheet 32 is joined to the top sheet 21 at both sides of the main body 2. As described above, in the absorbent article 1a, in the rear portion 203 and the front portion 201 of the absorbent core 22a, each of the pair of side wall portions 3 passes through the top sheet 21 and the internal leakage prevention portion 231 of the core leakage prevention sheet 23. It is indirectly joined to both sides of the absorbent core 22a.

  In the intermediate portion 202 of the absorbent article 1a, as shown in FIG. 6, the core leak-proof sheet 23 is folded back to the wearer side at a position spaced laterally from both side portions of the absorbent core 22a, and a part of the two layers. The top sheet 21 is folded back to the opposite side of the wearer so that the crease of the core leakage prevention sheet 23 is wound on both sides of the core leakage prevention sheet 23, and the core leakage prevention sheet 4 is melted by the hot melt adhesive 4. 23. Further, the gather sheet 32 covers the top sheet folded portion 211 outside the main body 2 and is hotter on the core leakage preventing sheet 23 on the center plane 2S side than the edge on the center plane 2S side of the top sheet folded portion 211. Bonded by the melt adhesive 4.

  As described above, in the absorbent article 1a, the width of the front part 201 and the rear part 203 of the absorbent core 22a is made larger than the intermediate part 202, whereby the side wall part 3 further rises toward the wearer side. It becomes easy and it adheres more reliably by the base of a foot, and it is easy to fit the absorbent article 1a to a wearer's body. On the other hand, in the absorbent article 1a, the moisture of excretion received at the intermediate portion 202 can be easily absorbed by moving to the front portion 201 and the rear portion 203 which are wider than the intermediate portion 202.

  In the absorbent article 1a having such a feature, the water repellent or liquid-impervious internal leak-proof portion 231 that covers both sides of the absorbent core 22a is provided in the front portion 201 and the rear portion 203, so that excrement can be generated. Even when the amount is relatively large, the moisture once absorbed by the absorbent core 22a is efficiently prevented from leaking from the side of the absorbent core 22a to the outside at the front portion 201 and the rear portion 203 where body pressure is easily applied. can do. In the absorbent article 1a, the side wall 3 is joined to the main body 2. However, since the internal leak-proof portion 231 prevents moisture from leaking from the absorbent core 22a, the main body 2 of the side wall 3 is prevented. It is possible to prevent moisture from being pressed against the part joined to the outer wall, and to prevent moisture from leaking out of the absorbent article 1a through the side wall 3. In the intermediate portion 202, since the side portion of the absorbent core 22a and the side wall portion 3 are separated from each other, even if some water leaks from the side portion of the absorbent core 22a, the side wall portion 3 is hardly transmitted. .

  In the absorbent article 1a, in the front part 201 and the rear part 203, as in the first embodiment, the top sheet 21 is folded back to cover the internal leak-proof part 231, so that the internal leak-proof part 231 is formed. A comfortable wearing feeling can be maintained by preventing a decrease in wearing feeling caused by touching the skin of the wearer. Further, the gather sheet 32 covers the top sheet folding portion 211 over almost the entire length in the longitudinal direction, so that moisture leaks to the outside of the absorbent article 1a even when moisture is transmitted to the top sheet folding portion 211. This can be prevented.

  In the front part 201 and the rear part 203, as in the first embodiment, since the internal leak-proof part 231 is continuous with the back sheet part 232, the main body part 2 can be easily formed, and disposable diapers The manufacture of 10 can be simplified.

As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  In the absorbent article, the gather sheet 32 on the side wall portion 3 does not necessarily have two layers. For example, the elastic member 31 may be joined to the single-layer gather sheet 32. Further, the number of elastic members 31 provided on each side wall 3 may be one or three or more.

  From the viewpoint of easily forming the main body 2, it is preferable that the internal leak-proof portion 231 covering both sides of the absorbent core is continuous with the back sheet portion 232, but the internal leak-proof portion 231 is the back sheet portion 232. Even if it is a separate member and provided between the top sheet 21 and the absorbent core, the water-repellent or liquid-impervious internal leak-proof portion 231 is prevented from touching the wearer's skin. While maintaining a comfortable wearing feeling, it is possible to prevent moisture once absorbed by the absorbent core from leaking from the side to the outside of the absorbent core.

  When the internal leak-proof part 231 and the back sheet part 232 are separate members, the back sheet part 232 is provided outside the top sheet folding part 211, and the top sheet 21 covers the internal leak-proof part 231 while outside the absorbent core. It may be joined to the main surface. In this case, the exterior member 101 may serve as the back sheet portion 232.

  The joining of the top sheet 21 and the core leak-proof sheet 23 is not necessarily limited to the joining with the hot melt adhesive 4 and may be performed by, for example, ultrasonic joining or heat sealing.

  The absorbent article does not necessarily have to be attached to the exterior member 101 as a member independent of the exterior member 101, and the pants-type disposable diaper 10 may be formed by being integrally formed with the exterior member 101. In addition, the absorbent article may be used as a pad part of a so-called open type disposable diaper that is worn around the waist around the part that contacts the abdomen side of the wearer and the part that contacts the back side, Furthermore, you may utilize as an auxiliary | assistant absorber attached to the wearer side of various exterior articles, such as cloth incontinence pants and a disposable diaper.

It is a figure showing composition of a disposable diaper provided with an absorptive article concerning a 1st embodiment. It is a top view of a disposable diaper. It is sectional drawing of a disposable diaper. It is sectional drawing of a disposable diaper. It is a top view of a disposable diaper provided with the absorptive article concerning a 2nd embodiment. It is sectional drawing of a disposable diaper. It is sectional drawing of a disposable diaper.

Explanation of symbols

1, 1a Absorbent article 2 Body part 3 Side wall part
10 Disposable diapers 21 Top sheet 22, 22a Absorption core
DESCRIPTION OF SYMBOLS 101 Exterior member 201 Front part 202 Intermediate part 203 Rear part 211 Top sheet folding | turning part 231 Internal leak-proof part 232 Back sheet part

Claims (4)

A disposable diaper that receives excrement from the wearer ,
An exterior member;
An absorbent article attached to the wearer side of the exterior member;
With
The absorbent article is
An absorbent body having a portion located along the abdomen, crotch and back of the wearer along the predetermined longitudinal direction when worn;
Said covering the outer major surface is opposite to the wearer side of the absorbent body, at least the flank of the absorber, both sides of the predetermined part position corresponding to the crotch portion or the back, the wearer of the absorbent body A water-repellent or liquid-impervious core leakage-proof sheet that is folded back to the main surface side and joined to the main surface on the wearer side
In both sides of the predetermined portion of the absorbent body to cover the main surface of the wearer's side of the absorbent body, the outer side of the core barrier sheet of which the absorber is folded to the outside of the absorber A liquid-permeable top sheet to be joined to the back sheet portion covering the main surface of
A pair of side wall portions provided on both sides of the top sheet over substantially the entire length in the longitudinal direction, both end portions in the longitudinal direction being joined on the top sheet , and rising to the wearer side;
With
The disposable diaper characterized in that the pair of side wall portions cover a folded portion of the top sheet on the outside of the absorber. The disposable diaper according to claim 1 ,
The disposable diaper characterized in that the predetermined part is the entirety of the absorbent body, and the width of the absorbent body in a direction perpendicular to the longitudinal direction is substantially constant over the entire length of the absorbent body. The disposable diaper according to claim 1 ,
The predetermined part of the absorbent body corresponds to a wearer's abdomen or back, and the width of the predetermined part of the absorbent body in the direction perpendicular to the longitudinal direction is larger than the width of the part corresponding to the crotch part. A disposable diaper characterized by that. The disposable diaper according to claim 3 ,
The disposable diaper characterized in that the predetermined part of the absorbent body corresponds to a wearer's abdomen and back.

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