JP3812460B2 - Disposable absorbent article - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[Technical Field] The present invention relates to an absorbent article that reduces skin troubles in the buttock in consideration of preventing stool from adhering to the wearer's buttock and also has good urine absorption.
[0002]
The “absorbent article” in the present invention includes infants or nursing diapers, adult incontinence products, and the like.
[0003]
[Prior art]
As a means for preventing excrement leakage in a so-called disposable diaper or the like, there is known a means for forming a three-dimensional gather that raises a sheet on which an elastic member is placed toward the wearer's skin. By making it extend around the back and the back body, the device which prevents the leakage of excrement is made | formed.
[0004]
In addition, a disposable diaper having a structure in which the stool is designed so as not to contact the skin of the wearer's buttocks as much as possible has also been proposed. Among the processes when changing disposable diapers, particularly when the disposable diaper contains feces, it is necessary to clean the wearer's buttocks and the like, and the work load for that purpose tends to increase. The burden of handling such stool can be reduced by preventing the wearer from making contact with the stool as much as possible. It is demanded to avoid contact as much as possible.
[0005]
In order to satisfy such a requirement, an absorbent article incorporating means for preventing stool leakage up to the back is disclosed in Japanese Patent Application Laid-Open No. 61-41304 and Japanese Patent Publication No. 8-511444. An absorbent article disclosed in Japanese Patent Application Laid-Open No. 61-41304 is a sheet in which an opening is formed in a crotch region at the center of a diaper and an elastic member is disposed in the longitudinal direction of the diaper adjacent to the opening. Is provided. In addition, the absorbent article disclosed in JP-A-8-511444 is provided with barrier cuffs adjacent to both edges in the longitudinal direction of the absorbent article, and a part of the top sheet is placed between the barrier cuffs. The pocket cuff which extends in the is arranged. However, since the sheet covers the absorber, urine leaks when the urine gets on the sheet through the wearer's skin, which is not preferable.
[0006]
The absorbent articles disclosed in JP-A-61-41304 and JP-A-8-511444 are all effective in that the stool is less likely to contact the wearer's buttocks. In the case of the absorbent article disclosed in JP-A-61-41304, since the liquid-impermeable sheet covers the absorber, the urine is transmitted through the wearer's skin and the liquid-impermeable sheet. If this value is reached, urine may leak from here, which is not preferable.
[0007]
Similarly, in the absorbent article disclosed in JP-A-8-511444, the liquid-impermeable pocket cuff covers the top sheet placed on the absorbent, so that the skin of the wearer If the urine reaches the pocket cuff, the urine may leak from this, and there is room for improvement.
[0008]
[Problems to be solved by the invention]
An object of the present invention is to provide an absorbent article that can save the labor of replacement by suppressing leakage of stool and adhesion of stool to a wearer's buttocks, and further improving absorbability to urine. .
[0009]
[Means for Solving the Problems]
The present invention includes the following inventions.
(1) A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body disposed between the two sheets, and an air gap between the top sheet and the top sheet. In the disposable absorbent article formed and provided with a skin contact sheet having an opening at least in the crotch region, both side edges and both edges in the longitudinal direction of the skin contact sheet are joined on the top sheet, another auxiliary absorber is disposed before and Symbol absorber on at least a part of the body-side skin contact sheet, the edge of the opening of the skin contact sheet, extends along the said end edge, after After intersecting or approaching each other at the vertices on the body side, it is extended and fixed to the waist around the back body so as to be separated from each other toward both side edges in the width direction of the absorbent article. And are stretchable elastic members are arranged under tension, when wearing the disposable absorbent article to the wearer, rising opening edge portion by shrinkage of stretchable elastic member, that adheres to the buttocks of the wearer Disposable absorbent article characterized.
[0010]
(2) The disposable absorbent article according to (1), wherein the skin contact sheet is a liquid-impermeable sheet.
[0012]
( 3 ) Item (1) or (2), wherein the opening of the skin contact sheet is formed in a rectangular shape from the waist circumference end of the front body of the absorbent article to the middle part of the back body. the disposable absorbent article according to.
[0015]
(4) The absorbent article, between the skin contact sheet and the top sheet of the back body, any additional auxiliary absorbent body is characterized in that it is arranged and fixed (1) to (3) section The disposable absorbent article according to claim 1.
[0016]
( 5 ) The disposable absorbent article according to any one of (1) to ( 4 ), wherein the skin contact sheet is a stretchable elastic sheet arranged and fixed in an expanded state.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The disposable absorbent article of the present invention includes a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body disposed between both sheets, and the top sheet disposed on the top sheet. A skin contact sheet having an opening in the crotch portion and forming a gap between the absorbent article, and at least part of the skin contact sheet on the back body side of the absorbent article. A disposable absorbent article having a structure in which an auxiliary absorbent body is disposed.
[0018]
In the absorbent article of the present invention, the auxiliary absorbent body is then disposed on the skin contact sheet in the body area.
Further, the auxiliary absorbent body can be further installed between the top sheet and the skin contact sheet.
[0019]
A gap between the top sheet and the skin contact sheet is formed between the top sheet and at least the widthwise edges of the skin contact sheet and the back body region.
[0020]
It is preferable that the elastic member which can be expanded-contracted is arrange | positioned along the edge part of the opening part of a skin contact sheet. When placing such an elastic member, the elastic member extends from the front body side end along the edge of the skin contact sheet opening to the back body region, and after crossing each other at the top of the back body region, Or after approaching mutually, it is fixed in the state extended and extended so that it might mutually separate toward the both-sides edge of an absorbent article .
[0021]
As the top sheet in the disposable absorbent article of the present invention, it is possible to use a nonwoven fabric, woven fabric, porous plastic film or the like that has been subjected to a hydrophilic treatment, such as polypropylene fiber, polyethylene fiber, polyester fiber, nylon fiber, or polyester. , A composite fiber containing two or more of polypropylene, polyethylene, nylon and the like. In particular, a polyester / polyester composite fiber or a polypropylene / polyethylene composite fiber is preferable from the viewpoint of strength, but is not limited thereto.
[0022]
The top sheet can be formed of a single sheet, but can also be composed of a plurality of sheets, for example, a center top sheet that covers the absorber and side top sheets that are joined to both side edges in the width direction. Is possible. In this case, the center top sheet and the side top sheet can be formed from the same material, but it is also effective to form them from different materials. For example, it is possible to make the side top sheet water-repellent with respect to the hydrophilic center top sheet, or to laminate the side top sheet with a thermoplastic resin film to make it liquid-impermeable.
[0023]
As the back sheet in the absorbent article of the present invention, a liquid-impermeable polyethylene film or the like can be employed. More preferably, in order to prevent stuffiness, a gas molecule that allows gas molecules to pass but does not allow liquid molecules to pass therethrough is used. For example, if you use a polyethylene film with a large number of micropores, a moisture-permeable film stretched by adding a filler to a thermoplastic resin, or a composite sheet with non-woven fabric bonded to the outside of these films, excess moisture will be exposed to the outside. It is less likely to cause rashes or rashes and can be made more comfortable in terms of touch.
[0024]
The absorbent body and auxiliary absorbent body in the absorbent article of the present invention are mainly composed of cotton-like pulp and a superabsorbent material, but are not particularly limited thereto. For example, a water-absorbing sponge or a water-absorbing sheet may be used, and any water-absorbing sheet can be used. However, it is preferable to have a laminated structure in which the whole is wrapped with a tissue. Moreover, although the shape of an absorber can employ | adopt an hourglass or a rectangular outline, an hourglass-like outline can obtain better fitting property.
[0025]
As the auxiliary absorber, a pulp sheet in which pulp is fixed on a sheet with a binder, a superabsorbent sheet in which a superabsorbent material is fixed on a nonwoven fabric, or the like can be used. The sheet form is preferable because it is easy to process in the manufacturing process and is thin, so that the fit when worn is improved. Further, the auxiliary absorbent body can be covered with a non-woven fabric subjected to a hydrophilic treatment.
[0026]
The above-described cotton-like pulp is obtained by forming a chemical pulp, a mechanical pulp, or a chemical mechanical pulp sheet into a cotton-like shape using a pulverizer. Pulp raw materials are not limited to conifers, but hardwoods, straw, bamboo, kenaf, and the like can also be used. The amount of flocculent pulp used varies depending on the structure of the intended absorber, i.e., whether it is used alone, in a stacked manner, or in combination with other absorbers. Set to ~ 400 grams. Moreover, you may mix a synthetic fiber, a heat-fusion component, an adhesive agent, etc. with cotton-like pulp.
[0027]
The above-described superabsorbent material absorbs water more than 20 times its own weight, and starch-based, cellulose-based and synthetic polymer-based materials can be used. Most preferred from the viewpoint. The shape may be any shape such as a fiber shape, a granular shape, or a sheet shape.
[0028]
The skin contact sheet in the absorbent article of the present invention preferably has liquid impermeability, and can be composed of a nonwoven fabric, a woven fabric, a plastic film, or the like. Specific examples of the material include polypropylene, polyethylene, polyester, nylon, or a composite material including two or more of these materials. In addition, a stretchable member, or a material obtained by combining a stretchable member and a nonwoven fabric, a film, or the like can be used, but is not particularly limited thereto.
[0029]
As the elastic member in the present invention, it is possible to use a stretchable material conventionally used for disposable diapers such as urethane film, urethane yarn, urethane foam, yarn rubber, natural rubber, etc. It is placed in an expanded state and is bonded and fixed by hot melt, starch-based or water-soluble glue such as carboxymethyl cellulose (CMC) or a highly fluid adhesive, or by heat or ultrasonic adhesion.
[0030]
【Example】
Hereinafter, examples of applying the disposable absorbent article of the present invention to a developed diaper will be described in detail with reference to FIGS. 1 to 3, but the present invention is not limited by these examples, Various changes and modifications included in the concept of the present invention described in the claims can be made, and those are also included in the scope of the present invention.
[0031]
FIG. 1 is a view showing a state in which the absorbent article of the present embodiment is developed, FIG. 2 shows a sectional structure taken along the line II-II, and FIG. 3 shows a sectional structure taken along the line III-III. FIG.
The unfolded diaper 11 in this embodiment includes a liquid-impermeable back sheet 12, a liquid-permeable center top sheet 13C that is superimposed on the back sheet 12, and both side edges of the center top sheet 13C in the width direction. A pair of side top sheets 13S (hereinafter abbreviated as top sheets 13), an absorbent body 14 disposed between the top sheets 13 and the back sheet 12, and the top sheets 13. Are arranged from the longitudinal end edge 15 serving as an opening around the waist of the front body region to the back body region so as to overlap the absorber 14, and the side edge portion on the outer side in the width direction and the both end portions in the longitudinal direction are the top. And a skin contact sheet 16 joined to the sheet 13. The back sheet 12 and the top sheet 13 have a pair of front and rear side flap parts 17 and 18 extending outward from both side edges in the width direction of the absorbent body 14, and a wearer is interposed between the side flap parts 17 and 18. A pair of pull-out portions 19 serving as opening portions around the legs are formed.
[0032]
A pair of left and right legs that can be overlapped with the side flaps 17 on the front body side and connected to both side edges of the side flaps 18 on the rear body side when worn are formed, and a leg opening is formed by the pull-out part 19. A fastening tape 20 is attached, and the fastening tape 20 is joined to a base tape (not shown) joined to the back sheet 12 on the front body side so as to be repeatedly peelable.
[0033]
In addition, the leg 14 fits well between the back sheet 12 and the top sheet 13 between the back sheet 12 and the top sheet 13 from the crotch region along the outer longitudinal direction of both side edges of the absorbent body 14 to the front body side and the back body side. The leg elastic member 21 for forming the leg gathers is fixed in an extended state.
[0034]
At the center in the width direction of the skin contact sheet 16, a notch 22 is formed as an opening of the skin contact sheet 16 of the present invention from the longitudinal edge 15, which is an opening around the waist of the front body region, to the crotch region. The elastic member 23 is arranged in an extended state along the notch 22. The skin contact sheet 16 in the present embodiment is formed by stacking two sheet materials, and the above-described elastic member 23 is sandwiched between these two sheet materials. Therefore, the space 24 is formed between the top sheet 13 and the skin contact sheet 16 by the contraction force of the elastic member 23, and stool can be guided here.
[0035]
The elastic member 23 disposed on the skin contact sheet 16 is disposed along the notch 22. Furthermore, the left and right elastic members 23 intersect or approach each other at the apex portion of the notch 22, and further, in the rear body region, arranged so as to expand toward both side edges in the width direction of the absorbent article, Since the elastic member 23 is disposed over the entire region along the notch 22, the elastic member 23 can be brought into close contact with the wearer's buttocks without a gap, and the elastic member 23 spreads toward both side edges in the width direction in the rear body region. Since it spreads in the width direction at the time of wearing, it can be made to contact | adhere to a wearer more and is preferable. In particular, it is more preferable that the elastic member 23 spreading in the rear body region is disposed in the vicinity of the fastening tape 20 because the force that is spread in the width direction when worn is increased.
[0036]
The skin contact sheet 16 in the absorbent article of the present invention is disposed on the top sheet 13 and extends from the front body region to the back body region, and both longitudinal ends thereof are openings around the waist of the top sheet 13. The auxiliary absorbent body 25 is disposed at the center of the width direction in the rear body region of the skin contact sheet 16 and is joined to the both end edges 15 in the longitudinal direction.
[0037]
Therefore, in a state in which such a deployable diaper 11 is worn, the skin contact sheet 16 comes into close contact with the wearer's skin due to the contraction force of the elastic member 23, and urine enters through the notch 22 and passes through the top sheet 13. Then, it is quickly absorbed by the absorber 14. The stool is guided from the notch 22 onto the top sheet 13 and is held in a gap 24 formed between the top sheet 13 and the skin contact sheet 16. In the case of loose stool, the moisture passes through the top sheet 13 and is absorbed by the absorber 14.
[0038]
In the present embodiment, since the rear body side edge of the skin contact sheet 16 is joined to the top sheet 13, it is possible to reliably prevent stool leakage from other than the notch 22. Further, when urine or water that adheres to the wearer's skin when the wearer's buttocks are washed in between the skin contact sheet 16 and the wearer's skin, these are transmitted along the skin contact sheet 16 to assist It is absorbed by the auxiliary absorber 25 from the absorption part T. In particular, in adults, the buttock of the wearer may be washed with water using a washing bottle after defecation, and there is a risk that the water after washing flows out of the diaper along the skin of the wearer. However, by arranging the auxiliary absorbent body in the absorbent article as in the present embodiment, it is possible to suppress a problem such as leakage to the outside of the unfoldable diaper 11.
[0039]
In the case where the unfoldable diaper 11 is for an adult, an auxiliary liquid absorbing pad can be used by inserting it between the top sheet 13 and the skin contact sheet 16. In this case, the skin contact Since the outer peripheral edge portion of the sheet 16 is joined to the top sheet 13, it is possible to prevent displacement of the liquid absorption pad.
[0040]
In the above-described embodiments, the description has been given with respect to the unfoldable diaper 11, but the present invention is a pants-type diaper in which the left and right end portions of the front and rear side flap portions 17, 18 in the unfoldable diaper 11 are integrally joined in advance. It can also be applied to diaper pads.
[0041]
【The invention's effect】
According to the absorbent article of the present invention, a gap is formed between the top sheet and the skin contact sheet having an opening in at least the crotch region is disposed on the top sheet, and at least in the rear body region of the skin contact sheet. Since the auxiliary absorbent body part is provided in part, the feces can be guided from the opening to the gap formed between the skin contact sheet and the top sheet, so that the feces are prevented from leaking and the feces are worn by the wearer's buttocks On the other hand, it is partitioned by the skin contact sheet, so that the stool is less likely to come into contact with the wearer's skin, and the burden during replacement of the absorbent article can be reduced. In addition, even if urine reaches the skin contact sheet through the wearer's skin, it can be guided to the absorber by the presence of the auxiliary absorber portion, so that leakage of urine can also be suppressed.
[0042]
In addition, the elastic contact member can be placed on the skin contact sheet so that the skin contact sheet can be brought into close contact with the wearer's skin, so the fit of the absorbent member is improved and the stool is reliably contacted from the opening. It can be led to a gap formed between the sheet and the top sheet.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment in which an absorbent article according to the present invention is applied to an unfolded diaper.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along arrow III-III in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Expandable diaper 12 Back sheet 13C Center sheet 13S Side top sheet 14 Absorber 15 Longitudinal edge 16 Skin contact sheet 17, 18 Side flap part 19 Pull-out part 20 Fastening tape 21 Leg elastic member 22 Notch (opening) Part)
23 Elastic member 24 Gap 25 Auxiliary absorber T Auxiliary absorber

Claims (3)

A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body disposed between the two sheets, and an upper surface of the top sheet to form a gap between the top sheet, In the disposable absorbent article comprising a skin contact sheet having an opening in at least the crotch region, both side edges and both end edges in the longitudinal direction of the skin contact sheet are joined on the top sheet, and the back body side skin another auxiliary absorber is disposed before and Symbol absorber on at least a portion of the contact sheet, the edge of the opening of the skin contact sheet, extends along the said end edge, a back body side apexes After crossing each other or approaching each other at the part, it is extended and fixed to the waist around the back body so as to be separated from each other toward both side edges in the width direction of the absorbent article. Stretchable elastic members are arranged under tension, when wearing the disposable absorbent article to the wearer, rising opening edge portion by shrinkage of stretchable elastic members, and characterized in that close contact with the wearer's buttocks disposable absorbent article to be.   The disposable absorbent article according to claim 1, wherein the skin contact sheet comprises a liquid-impermeable sheet. The disposable absorbent article according to claim 1 or 2 , wherein an additional auxiliary absorbent is disposed and fixed between the skin contact sheet and the top sheet of the back body of the absorbent article.

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