JP5144439B2 - Disposable absorbent article and outer absorbent article - Google Patents

Description

  The present invention relates to a disposable absorbent article for children, adults or incontinence and an outer absorbent article in which the disposable absorbent article is disposed.

Conventionally, disposable absorbent articles used as inner pads in combination with disposable diapers worn in so-called pant shapes called outer-type absorbent articles include a liquid-permeable top sheet and a liquid-impervious back sheet. A configuration in which an absorber is disposed between the two is generally used. In the case of such a disposable absorbent article, for example, liquid excrement such as urine can be absorbed by the absorbent through the top sheet, but when the absorbent is saturated with the liquid excreta, The excrement cannot be absorbed and may be leaked from the disposable absorbent article. Therefore, when the liquid excrement cannot be absorbed by the absorbent body, the top sheet and the back sheet are made into a liquid-permeable sheet so that the liquid excrement is absorbed by the absorbent body of the outer absorbent article to prevent leakage. There is known a structure in which a liquid-impervious back sheet that covers and covers substantially the entire outer surface side of the back sheet is joined to the back sheet (see, for example, Patent Document 1).
Japanese Patent No. 3519267 (page 2-5, FIG. 1)

  However, in the configuration of Patent Document 1 described above, since the top sheet and the back sheet are liquid permeable, the portion on the outer side in the width direction from the absorber is liquid permeable, and the liquid excrement leaks to the outer side in the width direction. It can be a problem.

  The present invention has been made in view of the above points, and a disposable absorbent article that prevents leakage of liquid excrement in the width direction and prevents liquid excrement from leaking and the disposable absorbent article are provided. An outer absorbent article is provided.

The disposable absorbent article according to claim 1 has a top sheet positioned on the inner surface side, a back sheet positioned on the outer surface side, and an absorbent body provided between the top sheet and the back sheet. and comprising an absorbent article main body having a length-side direction and the width direction, a disposable absorbent article used by arranging the inner surface of the outer type absorbent article, the topsheet has a central portion in the width direction Formed on a front surface side center portion located on both sides in the width direction, and the back sheet is formed on a back surface side center portion located in the center portion in the width direction and both side portions in the width direction. The front surface side central portion and the back surface side central portion are formed to be liquid permeable, and the front surface side both sides and the back surface side both side portions are formed to be liquid impermeable. The front surface side center and the back surface side Parts are located more inside both side edges in the width direction of the absorbent body and the back-side central portion widthwise length in the width direction length Saga the surface central portion of the Saya Litan rather, the surface of the absorbent article body At the center in the width direction on the sheet side, a recess is formed along the longitudinal direction in which a part of the absorber and at least a part of the center on the front side are recessed toward the back sheet side. Is formed with a penetrating portion that penetrates and opens from the topsheet side toward the backsheet side, and the penetrating portion has an opening on the topsheet side that is located in the center portion on the topsheet side, Ru Monodea the opening of the seat side is positioned in the backside central part.

The disposable absorbent article according to claim 2 is the disposable absorbent article according to claim 1, wherein the absorbent body is provided with a polymer absorbent, and the polymer absorbent The absorber is disposed at a low density at the center in the width direction, and is disposed at a high density at both sides in the width direction of the absorber.

Disposable absorbent article according to claim 3, in a disposable absorbent article according to claim 1 or 2, the at least one surface-side side portions and the back surface side of both side portions, the surface side central portion and the back A color or pattern different from that of the side center portion is formed.

The outer absorbent article according to claim 4 is formed such that the abdomen, the crotch part, and the back part are continuously formed along the longitudinal direction, and the disposable absorbent article according to any one of claims 1 to 3 is used. It is an outer type absorbent article that is worn and used by a user in a state of being disposed on the inner surface side, and has an outer absorbent body, and at least in the crotch portion, the widthwise length of the outer absorbent body is : wherein those Ri short width direction length Saya disposable absorbent article backside central portion widthwise length Saya Ri long and absorber of the disposable absorbent article of.

According to the invention described in claim 1, the front surface side central portion and the back surface side central portion are formed to be liquid permeable, and the front surface side both side portions and the back surface side both side portions are formed to be liquid impermeable. In addition, leakage of liquid excrement to the outside in the width direction can be prevented. Further, the surface-side central portion and the rear surface side central portion is positioned from both side edges in the width direction of the absorbent body inwardly and the width direction length of the width direction length Saga the surface central portion of the back-side central portion Saya Since the liquid excrement that has permeated the top sheet can be absorbed by the outer absorbent article through the back sheet, the liquid excrement can be hardly leaked.

Moreover , since a dent is formed along the longitudinal direction in at least a part of the absorbent body and the surface side central portion, excreta other than liquid excreta can be retained in the dent, It is possible to prevent the excrement from spreading and leaking within the absorbent article main body.

Furthermore , since the penetrating part is formed in the recessed part , even if the absorbent body becomes saturated with liquid excrement, the liquid excrement can move from the top sheet side to the back side sheet side through the penetrating part. The liquid excrement can be prevented from accumulating on the surface sheet side.

According to the invention described in claim 2 , since the polymer absorbent material is disposed at a low density in the central portion in the width direction of the absorbent body, liquid excrement is easily transmitted to the back side, Since both sides of the absorbent body in the width direction are arranged with high density, liquid excreta diffused outward in the width direction of the absorbent body can be reliably absorbed by the polymer absorbent material.

According to the invention described in claim 3 , since a color or a pattern different from the front surface side central portion and the back surface side central portion is formed on at least one of the front surface side both sides and the back surface side both sides, It is easy to distinguish the front surface side and the back surface side of the absorbent article body.

According to the invention described in claim 4, since the long Ri widthwise length Saya the back side central portion in the width direction length Saga disposable absorbent article of the outer absorbent member, has been transmitted from the rear surface side central portion liquid Excrements can be reliably absorbed by the outer absorber. Furthermore, the absorption member widthwise length Saya Ri short in the width direction length Saga disposable absorbent article of the outer absorbent member, the deterioration of the fit of the crotch portion can be prevented.

Hereinafter, the configuration of the first embodiment of the base technology of the present invention will be described in detail with reference to FIGS.

  The disposable absorbent article 1 shown in FIGS. 1 to 3 is disposed on the inner surface side of the outer absorbent article 2 such as a disposable diaper and used as an inner pad.

  The disposable absorbent article 1 includes a substantially rectangular absorbent article body 3 having a longitudinal direction and a width direction. The absorbent article main body 3 includes a top sheet 4 positioned on the inner surface side, that is, the user side when using the disposable absorbent article 1, and a back sheet 5 positioned on the outer side surface, that is, the outer absorbent article 2 side. It is formed from the absorber 6 provided between the top sheet 4 and the back sheet 5. Further, the top sheet 4 and the back sheet 5 are joined so as to seal the absorbent body 6 between the top sheet 4 and the back sheet 5.

  The top sheet 4 has a substantially rectangular shape having a longitudinal direction and a width direction, and the liquid permeable surface side central portion 8 formed on the liquid permeable surface side central sheet 7 and both sides of the liquid permeable surface side. It is composed of liquid-impervious surface side both side portions 10 formed by the sheet 9. The surface side both side portions 10 are joined to both sides in the width direction of the outer side surface of the surface side central portion 8, that is, the surface on the user side when used, and both side edges in the width direction of the absorbent body 6 are both sides on the surface side. Covered with a sheet 9.

  The front side center sheet 7 and the front side both side sheets 9 are formed of a sheet material such as a woven fabric, a non-woven fabric, or a film, for example. It is preferable because it is difficult to give pleasure. In particular, the surface side center sheet 7 is preferably a liquid-permeable nonwoven fabric, and the surface-side both side sheets 9 are preferably liquid-impermeable nonwoven fabrics.

  The back sheet 5 has a substantially rectangular shape having a longitudinal direction and a width direction, and is impervious formed by the liquid-permeable back side center part 12 and the back side sheet 13 formed by the back side sheet 11. It is composed of both sides 14 on the back side of the liquid. The back side both sides 14 are joined to both sides in the width direction on the outer side of the back side center 12, that is, the surface on the outer absorbent article 2 side when used, and both side edges of the absorbent body 6 in the width direction. Is covered with back side sheets 13.

  The back-side center sheet 11 and the back-side both-side sheets 13 are formed of a sheet material such as a woven fabric, a nonwoven fabric, or a film, for example. In particular, the back-side center sheet 11 is a liquid-permeable nonwoven fabric, 13 is preferably a film made of polyethylene or the like because it is necessary to ensure liquid impermeability.

  Here, the liquid-permeable front surface side central portion 8 and the back surface side central portion 12 are provided so as to be located on the inner side from both side edges in the width direction of the absorbent body 6, The back side both side portions 14 are provided from both side portions in the width direction of the absorbent body 6 to both side edges in the width direction of the absorbent article body 3. Further, in the width direction of the absorbent article main body 3, the width direction length a of the back surface side central portion 12 is shorter than the width direction length b of the front surface side center portion 8, and the liquid permeable portion of the back surface sheet 5 is formed. The area is smaller than the area of the liquid-permeable portion in the top sheet 4.

  The absorbent body 6 has a shape in which the center part in the longitudinal direction is cut out in an arc shape at both end portions in the width direction of the rectangle having the longitudinal direction and the width direction, and the front side surface and the back sheet 5 in contact with the top sheet 4. The area of the back side surface in contact with is smaller than the top sheet 4 and the back sheet 5. The absorbent body 6 is formed mainly of pulp or the like, for example, and sufficiently absorbs liquid excreta.

  The absorber 6 is provided with a polymer absorbent material (not shown). The absorbent body 6 has a polymer absorbent material disposed at a low density in a central portion in the width direction and opposed to the central portion 12 on the back surface side, and on both side portions located on the outer side in the width direction from the low density central portion. The polymer absorbent material is arranged with high density.

  Furthermore, it is good also as a structure which arrange | positions a different kind of polymer absorbent material in the center part of the width direction of the absorber 6, and both sides. In this case, a polymer absorbent material having a low absorption rate at the center in the width direction of the absorber 6 and a high absorption rate at both sides in the width direction of the absorber is provided. For example, a polymer absorbent having an absorption speed by a vortex method of 45 seconds or more is disposed in the center of the absorbent body 6 in the width direction, and a polymer absorbent of 30 seconds or less is disposed on both sides of the absorbent body in the width direction. It is preferable to arrange.

  By arranging the polymer absorbent in the absorbent body 6 in this way, the liquid excretion can easily permeate to the back side at the center part in the width direction of the absorbent body 6, and at both side parts in the width direction of the absorbent body 6. However, it is preferable because the diffused liquid excretion can be reliably absorbed by the polymer absorbent material, but the present invention is not limited to the configuration in which the polymer absorbent material is disposed on the absorbent body 6. It is good also as a structure which does not provide.

  A different color or pattern from the front surface side central portion 8 and the rear surface side central portion 12 is preferably formed on the back surface side both side portions 14 because the front surface side and the back surface side of the absorbent article body 3 can be easily distinguished. Specifically, for example, the front surface side center portion 8 and the back surface side center portion 12 are colored white, and the back surface side both side portions 14 are colored in a color other than white, etc. To do. If the color or pattern different from the front surface side central portion 8 and the back surface side central portion 12 is formed on at least one of the front surface side both sides 10 and the back surface side both sides 14, For example, even if the front surface side central portion 8 and the back surface side central portion 12 are colored white and the front surface side both side portions 10 and the back surface side both side portions 14 are colored with the same color other than white, The portion 8 and the back side central portion 12 are sufficiently distinguishable because the length in the width direction is different and the area of the white portion that can be visually recognized is different. Further, the front side both sides 10 and the back side both sides 14 may be colored in different colors. Naturally, the front side both sides 10, the back side both sides 14, the front side center 8 and the back side center 12 It is also possible to adopt a configuration in which the colors are colored differently. Furthermore, it can also be configured to identify not only by color but also by pattern. As a pattern, what is used as a mark which distinguishes the surface side and back surface side of the absorbent article main body 3, such as a character, a figure, and a symbol, for example is sufficient.

  The outer absorbent article 2 is worn and used by a user, and the disposable absorbent article 1 can be disposed on the inner surface side, that is, on the user side. Moreover, this outer type absorbent article 2 is a deployable hook-and-loop fastener fixing type that engages hook-and-loop fasteners and fixing them in a pants shape when worn, or a pants-type diaper that is formed in a pants shape in advance. .

  When the outer absorbent article 2 is worn, the abdomen side facing the user's abdomen, the crotch part facing the user's crotch part, and the back side part facing the user's back part are unfolded. And continuously formed along the longitudinal direction.

  The outer absorbent article 2 has an outer absorbent body 16 disposed between the outer surface sheet 15a and the outer back sheet 15b and provided from the abdominal side portion to the back side portion. The liquid excrement that has passed through the disposable absorbent article 1 is absorbed by the absorbent body 16.

  The width direction length c of the crotch part of the outer absorbent body 16 is longer than the width direction length a of the back surface side center part 12 of the disposable absorbent article 1 and the width direction of the absorbent body 6 of the disposable absorbent article 1. Shorter than length d. That is, the width direction length a of the back surface side center portion 12 <the width direction length c of the crotch portion of the outer absorber 16 <the width direction length d of the absorber 6. Further, the outer absorber 16 is formed in a substantially hourglass shape in which the crotch portion is narrower than the abdominal side portion and the back side portion. In the outer absorbent body 16, at least in the crotch part, the width direction length c of the crotch part of the outer absorbent body 16 is longer than the width direction length a of the back side central part 12 of the disposable absorbent article 1. In addition, the outer absorbent body 16 is not limited to an hourglass shape in which the crotch part is narrower than the other part, as long as it is shorter than the length d in the width direction of the absorbent body 6 of the disposable absorbent article 1. It may be a shape or the like.

  In addition, elastic bodies 17 are disposed along the longitudinal direction on both sides in the width direction of the outer absorbent article 2, and leg gathers 18 are formed by the elastic bodies 17. In addition, the elastic body 17 is arrange | positioned in the expand | extended state, and when the outer side absorbent article 2 is worn, the leg gathers 18 are in close contact with the leg of the user due to the contraction of the elastic body 17. The width direction length e between the leg gathers 18 and 18 of the outer absorbent body 16 is longer than the width direction length d of the absorbent body 6 of the disposable absorbent article 1. That is, the width direction length a of the back surface side central portion 12 <the width direction length c of the crotch part of the outer absorbent body 16 <the width direction length d of the absorbent body 6 <the width direction length between the leg gathers 18 and 18. e.

  Further, the outer absorber 16 is provided with a polymer absorbent. Although the dispersion density of this polymer absorbent material can be set arbitrarily, like the absorbent body 6 of the disposable absorbent article 1, it is disposed at a low density at the center of the outer absorbent body 16 in the width direction, A configuration in which both sides are arranged with high density is preferable. It is preferable that the outer absorbent body 16 is provided with a polymer absorbent material because it prevents leakage of liquid excrement at both sides in the width direction, but the outer absorbent body 16 is preferably made of a polymer absorbent material. The configuration is not limited to the arrangement, and the outer absorbent body 16 may be configured such that no polymer absorbent is provided.

  Next, the operation and effect of the first embodiment will be described.

  When mounting the disposable absorbent article 1, first, the disposable absorbent article 1 is disposed on the inner surface side of the outer absorbent article 2. At this time, since the back surface side both side portions 14 of the disposable absorbent article 1 are formed with different colors or patterns from the front surface side central portion 8 and the back surface side central portion 12, the front surface side and the back surface side of the absorbent article main body 3 are formed. Can be easily identified, and can be easily disposed on the outer absorbent article 2.

  The user wears the outer absorbent article 2 in which the disposable absorbent article 1 is disposed so that the front side central portion 8 of the disposable absorbent article 1 is located on the user's crotch.

  When the outer absorbent article 2 is worn, the leg gathers 18 of the outer absorbent article 2 are in close contact with the legs of the user.

  And the liquid excrement of the user who wears the outer type absorbent article 2 in which the disposable absorbent article 1 is disposed first passes through the surface side central portion 8 of the top sheet 4 and is absorbed by the absorber 6. The And although the liquid excretion which permeate | transmitted the surface side center part 8 of the surface sheet 4 but cannot be absorbed by the absorber 6 further permeate | transmits the back surface side center part 12 of the back surface sheet 5, it is outer type | mold absorbent article 2 Is absorbed by the outer absorber 16.

  Thus, when the front surface side central portion 8 and the back surface side central portion 12 are formed so as to be liquid permeable, for example, when the absorbent body 6 is saturated with liquid excreta, the liquid form is absorbed by the absorbent body 6. Even when the excreta cannot be absorbed, the liquid excreta can permeate the back side central portion 12 and can be absorbed by the outer absorber 16. Further, the front surface side central portion 8 and the back surface side central portion 12 are formed so as to be liquid-permeable, but the front surface side both side portions 10 and the back surface side both side portions 14 are formed so as to be liquid-impermeable. Even if the liquid excretion that has passed through the side central portion 8 spreads outward in the width direction, the front-side side portion 10 and the back-side side portion 14 are impermeable to liquid, so that the permeation from the absorbent body 6 to the outer side in the width direction. do not do. Therefore, leakage of liquid excrement in the absorbent article body 3 can be prevented.

  Further, the front surface side central portion 8 and the back surface side central portion 12 are located inside both side edges in the width direction of the absorber, and the width direction length a of the back surface side central portion 12 is the width direction length of the front surface side central portion 8. By being shorter than the length b, the area that can be transmitted to the absorbent body 6 can be as large as possible, and the area that can be transmitted to the outer absorbent article 2 side can be limited. Therefore, since the liquid excretion absorbed from the top sheet 4 can be absorbed by the outer absorbent body 16 through the back sheet 5, the liquid excretion can be hardly leaked.

  The absorber 6 has a low-density absorber in which the polymer absorbent material is disposed at a low density in the center portion in the width direction and the polymer absorbent material is disposed at a high density on both side portions in the width direction. In the central part in the width direction of 6, liquid excretion is permeated as much as possible to the outer absorbent article 2 side, and the absorption capacity of the polymer absorbent material is better than that of pulp normally used for the absorbent body 6. The liquid excrement remaining in the absorbent body 6 can be absorbed by the polymer absorbent, and the liquid excrement hardly remains on the surface of the absorbent body 6, so that the rewet can be improved. Moreover, the liquid excrement which diffused to the width direction outer side of the absorber 6 can be prevented from leaking out the liquid excretion on both sides in the width direction by absorbing the liquid excretion quickly in the polymer absorbent material. Therefore, leakage of liquid excretion from the absorbent article body 3 can be more reliably prevented by the polymer absorbent material.

  The outer absorbent article 2 has a length c in the width direction of the outer absorbent body 16 longer than a width direction length a of the back-side center part 12 of the disposable absorbent article 1, so that the outer-type absorbent article 2 is transmitted through the back-side center part 12. The liquid excreta can be reliably absorbed by the outer absorber 16.

  Moreover, the width direction length c of the outer absorbent body 16 is shorter than the width direction length d of the absorbent body 6 of the disposable absorbent article 1, and the width direction length a of the back surface side central portion 12 <the outer absorbent body 16. By setting the length of the crotch in the width direction c <the width direction length d of the absorbent body 6, it is possible to prevent deterioration of the adhesion of the leg gathers 18 around the leg of the user. Here, in the crotch part, when the length in the width direction of the outer absorbent body 16 is long, for example, equal to the width direction length d of the absorbent body 6, both sides of the absorbent body 6 and the outer absorbent body 16 in the width direction. Due to the thickness of the overlapping edges and the absorber 6 and the outer absorber 16 overlapping, the adhesion of the crotch part, in particular, the leg periphery, which is both sides in the width direction of the crotch part, is reduced, and the wearing feeling is deteriorated. At the same time, the leg gather 18 is difficult to adhere to the periphery of the user's leg, and liquid excrement may leak out. Therefore, by making the width direction length c of the crotch part of the outer absorbent body 16 shorter than the width direction length d of the absorbent body 6, the thickness of the leg peripheral part in the crotch part does not become too thick, and the adhesiveness decreases. In addition, deterioration of the wearing feeling can be prevented.

  Furthermore, the width direction length a of the back surface side central portion 12 <the width direction length c of the crotch part of the outer absorber 16 <the width direction length d of the absorber 6 <the width direction length between the leg gathers 18 and 18. By setting to e, the leg gather 18 can be reliably adhered around the leg of the user, and the adhesion of the outer absorbent article 2 around the leg can be improved. Further, by improving the adhesion around the legs, the holding power of the outer absorbent article 2 can be improved, and it is easy to maintain the state in which the outer absorbent article 2 is correctly worn, and the disposable absorbent article 1 is It is easy to hold the outer-type absorbent article 2 in a state of being disposed on the inner surface.

  In the above embodiment, the width direction length of the front surface side central sheet 7 itself forming the front surface side central portion 8 and the width direction length of the back surface side central sheet 11 itself forming the back surface side central portion 12 are: Although the configuration is shorter than the width direction length d of the absorbent body 6, the configuration is not limited to such a configuration, and the front surface side central portion 8 and the back surface side central portion 12 are liquid-permeable, Both side portions 14 on the back side are liquid-impervious, the center portion 8 on the front side and the center portion 12 on the back side are located inside both end edges in the width direction of the absorber 6, and the length in the width direction of the center portion 12 on the back side If a is shorter than the length b in the width direction of the front surface side central portion 8, as shown in FIG. 4, the width direction length of the front surface side central sheet 7 itself and the width direction length of the back surface side central sheet 11 itself, It is good also as a structure longer than the width direction length d of the absorber 6. FIG. In the case of this configuration, the front surface side central sheet 7 and the back surface side central sheet 11 are joined outside the both side edges of the absorbent body 6 in the width direction, and the front surface side central sheet 7 and the back surface side central sheet 11 absorb the absorber 6. Is wrapped. Furthermore, it is the outer surface side of the front surface side central sheet 7 and the rear surface side central sheet 11, and extends from both side portions in the width direction of the absorbent body 6 to both side edges in the width direction of the absorbent article main body 3. Both side sheets 13 are joined.

  However, when the width direction length of the back surface side central sheet 11 becomes longer than the width direction length d of the absorbent body 6 as shown in FIG. 4, the liquid excrement moved from the top sheet 4 side of the absorbent body 6 to the back sheet 5 side. However, since it becomes easier to diffuse outward in the width direction than the absorbent body 6 by the back side central sheet 11, the permeability of the liquid excrement from the back side central part 12 to the outer absorbent article 2 deteriorates, and the absorbent article body There is a possibility that liquid excretion will leak from 3. Therefore, as shown in FIG. 5, it is preferable that the width direction length of the back side central sheet 11 itself is shorter than the width direction length d of the absorbent body 6.

  Furthermore, if the width direction length of the front surface side central sheet 7 itself or the width direction length of the back surface side central sheet 11 itself is longer than the width direction length d of the absorbent body 6, The overlapped portion becomes larger, and the material is wasted by the overlapped portion, resulting in an increase in manufacturing cost. Therefore, as shown in FIG. 2, the width direction length of the top sheet 4 itself and the width direction length of the back sheet 5 itself are particularly preferably shorter than the width direction length d of the absorber 6.

  Moreover, as shown in FIG. 6, it is good also as a structure which provided the solid gathers 20 along the longitudinal direction in the both sides of the width direction of the absorbent article main body 3. As shown in FIG. The three-dimensional gather 20 is formed by the free portion 19 of the front side sheet 9 that is not joined to the front side central sheet 7 in the width direction center side than the joined part of the front side side sheet 9 and the front side central sheet 7. ing. The three-dimensional gather 20 is formed by being disposed at the end portion of the free portion 19 located on the center side in the width direction of the absorbent article main body 3 with the elastic body 21 extending along the longitudinal direction. When the disposable absorbent article 1 is used, the free part 19 rises due to the contraction of the elastic body 21, and the three-dimensional gather 20 closely contacts the user's crotch. Therefore, the liquid excretion permeating through the surface side central part 8 or the liquid excretion not permeating through the surface side central part 8 can be prevented from flowing from the three-dimensional gather 20 to the outer side in the width direction of the disposable absorbent article 1. In addition, leakage of liquid excreta can be prevented more reliably.

  Further, the front sheet 4 is formed by separate sheets of the front surface side central sheet 7 and the front surface side both side sheets 9, and the back sheet 5 is formed by separate sheets of the back surface side central sheet 11 and the back surface side both side sheets 13. However, it is not limited to such a configuration, each of the top sheet 4 and the back sheet 5 is composed of one liquid-impermeable sheet, and by processing the central portion in the width direction to be liquid-permeable, You may form a liquid-permeable center part and liquid-impervious both sides. The liquid-impermeable sheet can be rendered liquid-permeable by treatment with a surfactant. By forming the top sheet 4 and the back sheet 5 from a single sheet in this way, there is no need to join the liquid-permeable central part and the liquid-impervious both side parts, and a feeling of wearing by joining can be achieved. Deterioration can be prevented.

  Further, the outer type absorbent article 2 is limited to the one in which the width direction length c of the crotch part of the outer absorbent body 16 and the width direction length e between both leg gathers 18 and 18 are set as described above. What is necessary is just to be able to arrange the disposable absorbent article 1 on the inner surface side.

Next, a second embodiment of the base technology of the present invention will be described with reference to FIG. In addition, about the structure same as said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 7, in the central portion of the absorbent article main body 3 in the width direction on the surface sheet 4 side, there is a recess 23 whose cross-sectional shape is recessed in a rectangular shape from the surface sheet 4 side to the back sheet 5 side. It is formed along the longitudinal direction.

  The recess 23 includes an absorber recess 24 in which a part of the absorbent body 6 on the surface sheet 4 side is recessed toward the back sheet 5 side, and a part of the surface side central part 8 toward the back sheet 5 side. It is formed from a recessed surface sheet recess 25.

  The recess 23 is not limited to a rectangular shape in cross section, and for example, the cross section may have an arc shape or a triangular shape.

  Here, the width direction length of the recessed portion 23 is shorter than the width direction length d of the absorber 6 and longer than the width direction length a of the back surface side central portion 12. That is, both side edges in the width direction of the recess 23 are located on the inner side in the width direction than both side edges in the width direction of the absorbent body 6, and are located on the outer side in the width direction from both side edges in the width direction of the back side central portion 12. ing.

  Although not shown, the length in the longitudinal direction of the recess 23 is equal to the length in the longitudinal direction of the absorbent body 6, and both ends in the longitudinal direction of the recess 23 are in the longitudinal direction of the absorbent body 6. Located at both ends. Note that the length of the recess 23 in the longitudinal direction may be shorter than the length of the absorbent body 6 in the longitudinal direction.

  Then, by forming the recess 23 in the absorbent article body 3, for example, excreta other than liquid excrement such as solid stool and fluid stool can be retained in the recess 23. Therefore, since excrement other than liquid excrement can be prevented from leaking by moving and spreading in the absorbent article body 3, even excrement other than liquid excrement can be handled. It is difficult to leak from the article body 3.

  In this embodiment, only one recess 23 is provided. However, the number of recesses 23 is not limited to one, and a plurality of recesses 23 may be provided.

Next, a third embodiment of the prerequisite technology of the present invention will be described with reference to FIG. In addition, about the structure same as said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, the absorbent body 6 is formed with two through portions 26 that penetrate and open from the top sheet 4 side to the back sheet 5 side.

  The through portion 26 is located in a portion where the opening 27 on the top sheet 4 side is opposed to the front side central portion 8, and the opening 28 on the back side sheet 5 is located in a portion facing the back side central portion 12. .

  And even if the absorber 6 is saturated with the liquid excretion by forming the penetrating portion 26 in the absorber 6, the liquid excrement passes through the penetrating portion 26 from the top sheet 4 side to the back sheet 5 side. Therefore, the liquid excrement can easily permeate to the outer absorbent article 2 side, and the liquid excrement is less likely to accumulate on the surface sheet 4 side in the absorbent article main body 3. Therefore, leakage of liquid excrement from the absorbent article body 3 can be prevented.

  Further, since the opening 27 is located at the portion facing the front surface side central portion 8 and the opening 28 is located at the portion facing the back surface side central portion 12, the liquid excrement can be surely removed from the outer absorbent article. Permeable to the 2 side.

  In addition, even if the penetration part 26 is a structure continuously formed in groove shape along the longitudinal direction of the absorber 6, the structure formed intermittently in hole shape along the longitudinal direction of the absorber 6 It may be.

  In the above embodiment, the two through portions 26 are formed. However, the number of the through portions 26 is not limited to two.

Next, an embodiment of the present invention will be described with reference to FIG. In addition, about the structure same as said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 9, in the configuration in which the dent 23 is formed in the absorbent body 6, solid stool and fluid stool are retained in the dent 23, and liquid excrement tends to accumulate in the dent 23, the recessed portion 23, the penetrating portion 26 which is open from the top sheet 4 side through toward the back sheet 5 side.

As described above, in the through portion 26, the opening 27 on the top sheet 4 side is located in the front surface side central portion 8, and the opening 28 on the back surface sheet 5 side is located in the back surface side central portion 12.

Next, a modification of the present invention will be described with reference to FIG. In addition, about the structure same as said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

In the above embodiment, the through portion 26, as shown in FIG. 10, may be configured to form the inclined shape toward the front surface sheet 4 side to the center in the width direction of the back sheet 5. By adopting such a configuration, even if liquid excrement diffuses outward in the width direction on the surface sheet 4 side, the liquid excrement is easily transmitted to the back side central portion 12 through the through portion 26, It can be more reliably absorbed by the outer absorber 16.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a first embodiment of a base technology in a disposable absorbent article of the present invention with a part cut away. It is sectional drawing which shows the AA cross section in FIG. It is sectional drawing which shows the state arrange | positioned on the inner surface side of the outer type absorbent article of a disposable absorbent article same as the above. It is sectional drawing which shows the modification of a disposable absorbent article same as the above. It is sectional drawing which shows the modification of a disposable absorbent article same as the above. It is sectional drawing which shows the modification of a disposable absorbent article same as the above. It is sectional drawing which shows 2nd Embodiment of the premise technique in the disposable absorbent article of this invention. It is sectional drawing which shows 3rd Embodiment of the premise technique in the disposable absorbent article of this invention. It is sectional drawing which shows one Embodiment in the disposable absorbent article of this invention . It is sectional drawing which shows the modification of a disposable absorbent article same as the above.

DESCRIPTION OF SYMBOLS 1 Disposable absorbent article 2 Outer type absorbent article 3 Absorbent article main body 4 Top sheet 5 Back sheet 6 Absorber 8 Front side center
10 Front side
12 Back side center
14 Both sides on back side
16 Outer absorber
23 dent
26 Penetration part
27 opening
28 opening

Claims (4)

A topsheet positioned on the inner surface side, a back sheet positioned on the outer surface side, the absorbent article main body having a closed and length-side direction and the width direction and an absorbent body disposed between said topsheet and said backsheet A disposable absorbent article used by being disposed on the inner surface side of the outer absorbent article,
The surface sheet is formed from a surface side central portion located at a center portion in the width direction and surface side both sides located at both sides in the width direction,
The back sheet is formed from a back side central part located in the center part in the width direction, and a back side both side parts located in the both sides in the width direction,
The front surface side central portion and the back surface side central portion are formed to be liquid permeable, the front surface side both side portions and the back surface side both side portions are formed to be liquid impermeable,
Said surface side central portion and the rear surface side central portion, Ri widthwise length Saya widthwise length Saga the surface central portion of the positioned from inside both side edges in the width direction of the absorbent body and the back-side central portion short rather,
In the central part of the absorbent article main body in the width direction on the surface sheet side, there is a recess along the longitudinal direction in which at least part of the absorber and at least part of the surface side central part are recessed toward the back sheet side. Formed,
In this dent part, a through part is formed that penetrates from the top sheet side toward the back sheet side and opens,
The penetrating part is a disposable absorbent article characterized in that the opening on the top sheet side is located in the center part on the top surface side and the opening part on the back sheet side is located in the center part on the back surface side . The absorbent body is provided with a polymer absorbent material, and the polymer absorbent material is disposed at a low density in the central portion of the absorbent body in the width direction, and both side portions of the absorbent body in the width direction. the disposable absorbent article of claim 1 Symbol mounting, characterized in that it is arranged at a high density in. The disposable absorptivity according to claim 1 or 2, wherein a color or a pattern different from that of the front surface side center portion and the back surface side center portion is formed on at least one of the front surface side both sides and the back surface side both sides. Goods. The abdomen, the crotch part, and the dorsal part are formed continuously along the longitudinal direction, and the disposable absorbent article according to any one of claims 1 to 3 is worn on the user in a state of being disposed on the inner surface side. An outer type absorbent article to be used,
Has outer absorbent member, at least in the crotch portion, the width direction length of the outer absorbent body, absorption of the rear central portion widthwise length Saya Ri long and the disposable absorbent article of the disposable absorbent article outer type absorbent article, wherein the short Ri widthwise length Saya body.

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