JP2008054991A - Disposable paper diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the visibility of an indicator provided in a disposable paper diaper, as well as the indicator's external design and appearance, while keeping its notifying function well. <P>SOLUTION: An indicator 15 showing visual changes when it contacts water or body fluid coats the inner side of an anti-leak sheet 12, while a material 18 clarifying or improving the visibility of the indicator 15 coats the outer or inner surface of the anti-leak sheet 12 in the range of overlapping all or at least part of the indicator 15. The material 18 is made of either one of liquefied or solid oil, paraffin, glycerin and plastic containing hot-melt adhesives, or some of their arbitrary combination. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indicator that can recognize from the outside that there has been excretion such as urination or defecation, a disposable paper diaper having a so-called notification function, and relates to a disposable paper diaper with improved visibility of the notification function.

  Conventionally, disposable diapers have been known that can be visually recognized from the outside even when wearing diapers, such as when urinating or defecation is excreted, and eliminating the need to remove and check each paper diaper. .

  For example, in Patent Document 1 below, a transparent part having a transparent part formed at least about one third of the length direction is provided at a substantially central part in the length direction on the back sheet. The part is coated with a wax, varnish or hot melt agent having a low melt viscosity and excellent compatibility with the thermoplastic resin as one raw material of the microporous sheet, on the microporous sheet which is the material sheet of the back sheet Disposable diapers formed by doing so are disclosed.

Moreover, in the following patent document 2, in the absorbent article which consists of a liquid-permeable surface material, a leak-proof back material, and an absorber disposed between these double-sided materials, the back material is porous. There is disclosed an absorbent article formed by using a partially transparent porous sheet obtained by partially applying and impregnating a surface of a sheet precursor with an organic compound.
Japanese Patent No. 3688403 Japanese Patent Laid-Open No. 10-298321

  However, since both of Patent Documents 1 and 2 described above are formed by transparently forming a part of the back sheet so that excrement such as urination or defecation can be directly visually recognized from the outside, Has a problem that the degree of discoloration is small and is difficult to visually recognize, and in the case of defecation, there is a problem that it is difficult to see because an absorber is interposed.

  On the other hand, in recent years, disposable diapers having a so-called notification function, an indicator that can be recognized from the outside by visual changes such as discoloration, coloration, and changes in design such as urination and defecation have been widely marketed. However, if a drug or the like is applied in the vicinity of the indicator, the function of the indicator is hindered, the ink spreads when the indicator is made of ink, or the adhesion performance is lowered when the indicator is made of a hot melt adhesive. Could occur.

  SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is to provide a disposable paper diaper having an improved appearance design while improving the visibility of the indicator while maintaining the notification function of the indicator in a disposable paper diaper having an indicator.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between a liquid-permeable surface sheet and a liquid-impervious leak-proof sheet, and an exterior is provided on the outer surface side of the leak-proof sheet. In disposable paper diapers in which sheets are provided integrally,
An indicator that shows a visual change due to contact with moisture or body fluid is provided on the inner surface side of the leak-proof sheet, and is in a range that overlaps at least a part or all of the indicator, and the outer surface of the leak-proof sheet A disposable paper diaper characterized in that a clearing agent is applied to the side or the inner surface side in order to improve the visibility of the indicator.

  In the present invention according to claim 1, the indicator is provided on the inner surface side of the leak-proof sheet, and at least overlaps with part or all of the indicator, and on the outer surface side or the inner surface side of the leak-proof sheet. By applying the clearing agent, the visibility of the indicator is improved, and when the indicator constitutes part or all of the design, the appearance design is improved.

  As the present invention according to claim 2, the liquid-impervious leak-proof sheet is a microporous sheet having moisture permeability, and the clearing agent contains liquid or solid oil, paraffin, glycerin and a plasticizer. The disposable paper diaper according to claim 1, wherein the disposable diaper is used in any combination or any combination of the group consisting of hot melt adhesives.

  As the present invention according to claim 3, the liquid-impervious leak-proof sheet is a microporous sheet having moisture permeability, and the clarifying agent includes tri (capryl / capric acid) glycerin, ester, and 125 °. The disposable paper diaper of Claim 1 comprised by mix | blending F solid paraffin is provided.

  The present invention according to claims 2 and 3 is a specific configuration of the clarifying agent, and by configuring in this way, visibility from the outside of the indicator is improved while maintaining a notification function of the indicator. It becomes like this. In particular, in recent years, there has been a tendency to use an inorganic filler that has been melt-kneaded and stretched in order to impart air permeability to the leak-proof sheet. Since the reaction is difficult to visually recognize from the outside, the visibility of the indicator is improved by applying a clearing agent to the outer surface side or the inner surface side of the leak-proof sheet.

  The disposable according to any one of claims 1 to 3, wherein the indicator is applied to the inner surface side of the leak-proof sheet and the clearing agent is applied to the outer surface side of the leak-proof sheet. Paper diapers are provided.

  As the present invention according to claim 5, the absorber is surrounded by crepe paper and / or nonwoven fabric, and the indicator is applied to the crepe paper or nonwoven fabric, and is made transparent on the outer surface side or inner surface side of the leakproof sheet. The disposable paper diaper in any one of Claims 1-3 by which the agent is apply | coated is provided.

  As this invention which concerns on Claim 6, while the said transparentizing agent is apply | coated to the inner surface side of the said leak-proof sheet, the said indicator is provided in the upper surface so that it may overlap with the transparentizing agent. A disposable paper diaper according to the above is provided.

  The present invention described in claims 4 to 6 is an embodiment showing an arrangement form of the indicator and the clarifying agent, and each aspect can improve the visibility of the indicator, and the indicator is a part of the design or When all the components are configured, the appearance design can be improved. Of these, an embodiment in which the sheet and the clearing agent are in contact with each other is desirable so as not to contact the indicator.

  The disposable paper diaper according to any one of claims 1 to 3, wherein the indicator is a sheet-like member that includes indicator reaction means and is disposed between the leak-proof sheet and the absorber. Is provided.

  The invention according to claim 7 is a sheet-like member containing a medicine (indicator reaction means) that shows a visual change by contact with moisture or body fluid, in addition to using a liquid as the indicator and providing it by application. It may be arranged between the leak-proof sheet and the absorber. In this case, it is possible to arrange it on the clearing agent.

  As a present invention according to claim 8, a stool pocket for storing and holding excrement is provided in the buttocks contact portion of the absorber, and the clearing agent is provided in a region including at least a part of a region corresponding to the stool pocket. The disposable paper diaper in any one of Claims 1-7 currently apply | coated is provided.

  In the present invention described in claim 8, by applying a clearing agent to a region including at least a part of the region corresponding to the stool pocket, not only the indicator but also excrement stored and held in the stool pocket is externally provided. The visibility of can be improved.

  As described above, according to the present invention, in the disposable paper diaper having an indicator, the visibility of the indicator is improved and the appearance design is improved while maintaining the notification function of the indicator.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a product state appearance view of a disposable paper diaper 1 according to the present invention, and FIG. 2 is a developed view thereof.

  As shown in FIG. 1 and FIG. 2, a disposable paper diaper 1 (hereinafter simply referred to as a paper diaper) is placed between a liquid-permeable surface sheet 11 made of a nonwoven fabric or the like and a leak-proof sheet 12 made of polyethylene or the like. An absorbent main body 10 having an absorbent body 13 such as a pulp formed therein, a crepe paper 14 surrounding the absorbent body 13, and an exterior sheet 20 integrally provided on the outer surface side of the leak-proof sheet 12. A pants-type disposable diaper having a structure in which a waist opening and a pair of left and right leg openings are formed by joining the front body F and the back body B of the exterior sheet 20 on both sides in the product state.

  Further, an indicator 15 made of a hot melt adhesive containing a colored ink or a colorant is disposed on the inner surface side of the leak-proof sheet 12 as will be described later. This indicator 15 makes it possible to recognize from the outside that there has been excretion by touching this excrement etc. when it is excreted, such as urination or defecation, in particular liquid excretion, and is discolored. is there.

(Structure of the absorbent main body 10)
First, an example of the structure of the absorbent main body 10 will be described in detail based on FIG. 2 and FIG.

  As described above, the absorbent main body 10 has a structure in which an absorbent body 13 such as cotton-like pulp is interposed between a liquid-permeable surface sheet 11 made of a nonwoven fabric or the like and a leak-proof sheet 12 made of polyethylene or the like. And absorbs and retains body fluids.

  In the illustrated example, the absorbent body 13 is formed with a substantially square shape in plan view, and the width dimension thereof is a dimension width that does not give the wearer a feeling of gore by hitting the crotch portion. The absorber 13 is surrounded by crepe paper 14. As the absorber 13, it is desirable to use an airlaid absorber that can reduce the bulk.

  As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and air-through method are excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid-permeable surface sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid-permeable top sheet 11 extends to the back side of the absorbent body 13 around the side edge of the absorbent body 13.

The leak-proof sheet 12 covering the back surface side (non-skin contact surface side) of the absorbent body 13 is made of a liquid-impervious plastic sheet such as polyethylene or polypropylene, but in recent years has moisture permeability from the viewpoint of preventing stuffiness. Those are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility. Specifically, the moisture permeability measured according to JIS Z0208 is 3000 to 12000 g / m ² · 24 hr, preferably 6000 to 12000 g / m ² · 24 hr, more preferably 8000 to 12000 g / m ² · 24 hr. It is desirable to use a liquid sheet.

  On the other hand, the gathered nonwoven fabric 16 that forms the three-dimensional gathered BS is a nonwoven fabric made into a double sheet by folding, and the side edge portion of the absorbent body 13 that is rolled up by the liquid-permeable surface sheet 11 is further rolled up from the upper side. The absorber 13 extends to the back side and is bonded. More specifically, the gathered nonwoven fabric 16 has a three-dimensional gather BS forming portion left in the middle portion in the longitudinal direction of the paper diaper, and a range extending from the middle portion in the width direction to the back side of the absorbent body 13 is bonded by a hot melt adhesive or the like. Further, at the front and rear end portions in the longitudinal direction, the section from the intermediate portion in the width direction to the one side end edge is bonded in a range extending to the back surface side of the absorber 13, and the portion forming the three-dimensional gather BS is the absorber. While being folded at the upper surface portion of 13, it is bonded by a hot melt adhesive or the like.

  In the gathered nonwoven fabric 16 formed of the double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 17, 17... The thread-like elastic elastic members 17, 17... Are for forming a three-dimensional gather BS by raising a non-woven fabric portion protruding from the absorber side edge portion by elastic elastic force in a product state.

  As the thread-like elastic elastic member 17, a material such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, or the like that is usually used can be used. Further, in order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less and the tension is 150 to 350%. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  In the same manner as the liquid-permeable surface sheet 11, the material fiber constituting the gathered nonwoven fabric 16 is not only synthetic fibers such as polyethylene or polypropylene, but synthetic fibers such as polyester or polyamide, and regenerated fibers such as rayon and cupra. Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a non-woven fabric with a low basis weight and excellent air permeability. Furthermore, with respect to the gathered nonwoven fabric 16, in order to prevent permeation of urine and the like, to prevent fogging, and to enhance the touch to the skin (dry feeling), silicon-based, paraffin metal-based, alkylchromic croid-based water repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

  As shown in FIG. 3, the absorbent main body 10 and the exterior sheet 20 are integrally bonded to the upper surface side of the exterior sheet 20 by an adhesive such as hot melt. Then, the absorbent main body 10 and the outer sheet 20 are folded in the front-rear direction, and both sides thereof are joined to each other by heat welding or hot melt adhesive, thereby assembling the pants-type paper diaper 1 shown in FIG. It is done.

(Structure of exterior sheet 20)
Next, the structure of the exterior sheet 20 will be described in detail with reference to FIGS. 3 and 4. The exterior sheet 20 is a non-woven sheet having a two-layer structure in which an upper layer non-woven fabric 20A and a lower layer non-woven fabric 20B are bonded with a hot melt adhesive or the like, and various elastic elastic members are hot between the upper layer non-woven fabric 20A and the lower layer non-woven fabric 20B. It is bonded with a melt adhesive or the like to give stretchability. The planar shape forms a pseudo hourglass shape as a whole by the concave leg circumference cut lines 29 for forming leg openings on both sides of the middle.

  In the exterior sheet 20 according to the present invention, as the elastic elastic member, as shown in the developed shape of FIG. 4, waist elastic elastic members 24, 24... Further, the back body B includes a plurality of waist elastic elastic members 25, 25,... Which are arranged along the horizontal direction at intervals in the vertical direction and for forming shearing around the waist.

  The waist elastic elastic members 24, 24... Are arranged in the vicinity of the waist opening edge in the range of the side joint edge 21 where the front body F and the back body B are joined, with an interval in the vertical direction. A plurality of elastic rubber elastic elastic members for attaching a disposable diaper to the body by applying an elastic force to tighten around the waist of the body. As the waist elastic elastic member 24, thread rubber is used in the illustrated example. However, for example, a tape-like elastic member may be used.

  The waist elastic elastic members 25, 25... Extend from the upper position to the lower position excluding the waist opening edge 23 of the side joint edge 21, or from the side joint edge 21 to the crotch side as shown in the figure. It is a rubber elastic elastic member that is arranged along the horizontal direction at intervals in the vertical direction over the range, and applies a horizontal elastic force to the waist part of the front body F and the back body B, respectively. This is for forming the waistline shearing zones K1, K2. It should be noted that the boundary between the waist elastic elastic members 24, 24... And the waist elastic elastic members 25, 25. For example, even if the number of elastic elastic members arranged in the horizontal direction with an interval in the vertical direction between the front body F and the back body B cannot be specified, some of the upper elastic members 24 on the upper side are provided. As long as the remaining elastic elastic member functions as the waist elastic elastic member 25. In order to prevent the absorbent body 13 from contracting, the waist elastic members 25 are not continuous near the center where the absorbent main body is joined, and the elastic elastic members 25 crossing the absorbent main body 10 are cut. Further, the structure may be discontinuous and may not have elasticity provided by the waist elastic members 25.

(Structure of indicator 15)
Next, the structure of the indicator 15 will be described in detail. In the present invention, the indicator 15 is a colorant that exhibits a color reaction upon contact with moisture such as a body fluid and / or a colorant that exhibits a color reaction by detecting the pH in the water or body fluid. Reactions in which color disappears due to reaction, reactions in which colorant dissolves and disappears in urine, or other inks or adhesives containing drugs that show visual changes, or contact with water or body fluids It is comprised by the sheet-like member containing the chemical | medical agent (indicator reaction means) which shows a change. For example, as a colorant that exhibits a color reaction upon contact with moisture such as the body fluid, a water-soluble, water-decomposable dye or leuco dye and a phenolic compound, an acidic substance, an electron-accepting substance that develops color of the leuco dye It is possible to use a colorant comprising a developer such as

  The indicator 15 composed of the above-described ink or adhesive is applied to a predetermined application region as shown in FIGS. The indicator 15 shown in FIG. 2 and FIG. 3 shows the above-described ink or adhesive application area. This area | region is an area | region where the contact with the excretion absorbed by the absorber 13 is performed efficiently. The indicator 15 is formed on the inner surface side of the leak-proof sheet 12 by being applied in a planar shape, a strip shape, or a number of streaks. Specifically, the inner surface of the leak-proof sheet 12, the crepe paper 14 surrounding the absorbent body 13, or the absorbent core 13 is surrounded by a core wrap sheet (not shown) made of nonwoven fabric instead of the crepe paper 14. In the case where the crepe paper 14 is surrounded by a core wrap sheet made of nonwoven fabric, the indicator 15 is applied to the crepe paper or the core wrap sheet.

  When the indicator 15 is composed of ink, the component of the indicator 15 is obtained by adding a colorant to the ink. When the indicator 15 is composed of an adhesive, the water-soluble polymer is made of a water-insoluble resin. A natural component and a colorant are added. Specific examples in the case of comprising an adhesive include a water-insoluble polymer comprising a polyethylene glycol molecular weight of 100 to 500, polyvinyl pyrrolidone, a vinyl acetate copolymer, and a water-soluble polyester. And a colorant that indicates the acidity / alkaline degree (pH) of the liquid in contact by color change.

When the indicator 15 is composed of an adhesive, various known adhesives can be used as the adhesive. As an example, the case where a hot melt adhesive is used will be described in detail. By using a hot melt adhesive containing a colorant as the indicator 15, the colorant can be prevented from diffusing and leaching, and sheet-like. Compared with the case where the indicator is provided, since it can be easily performed in-line, the work of attaching the indicator can be greatly saved. At this time, the application amount of the indicator hot melt adhesive is preferably 20 to 40 g / m ² . When the amount is less than 20 g / m ² , the function as an indicator is impaired, and when it is more than 40 g / m ^2, a feeling of stickiness due to curing of the adhesive occurs.

  On the other hand, when using the indicator 15 which consists of a sheet-like member, this sheet-like member is arrange | positioned between the said leak-proof sheet 12 and the said absorber 13. As shown in FIG. When this sheet-like indicator member is used, the number of members is increased as compared with the case where a liquid indicator is applied and provided, but it can be easily used in a necessary amount in a necessary part. Thus, the cost can be reduced by reducing the use area of the sheet-like member including the indicator reaction means.

(Means for making the leak-proof sheet 12 transparent)
In the present invention, an indicator 15 showing a visual reaction by contact with moisture or body fluid is provided on the inner surface side of the leak-proof sheet 12, and at least overlaps with part or all of the indicator 15, and In order to improve the visibility of the indicator 15, a clearing agent is applied to the outer surface side or the inner surface side of the leak-proof sheet 12. By applying this clearing agent 18, the light transmittance of the leak-proof sheet 12 is improved, and the indicator 15 applied to the inner surface side of the leak-proof sheet 12 can be easily visually recognized from the outside. Can constitute part or all of the symbol, the appearance design of the indicator 15 can be improved.

  The said clarifying agent 18 mix | blended with any or arbitrary combinations in the group which consists of liquid or solid oil, paraffin, glycerol, and a plasticizer containing hot-melt-adhesive. In particular, the function and appearance of the indicator 15 are deteriorated, specifically, the discoloration function of the indicator 15 is disturbed, the appearance is deteriorated due to ink bleeding when the indicator 15 is made of ink, and the indicator 15 is made of a hot melt agent. In order to prevent deterioration of the adhesive performance, the clarifying agent 18 is desirably composed of tri (capryl / capric acid) glycerin, ester, and 125 ° F. solid paraffin at a predetermined ratio. These blending ratios can be, for example, 60% tri (capryl / capric acid) glycerin, 10% ester, and 30% 125 ° F solid paraffin. It should be noted that the melting point and viscosity of the clarifying agent 18 can be changed by adjusting these component blending ratios.

  Further, when the clearing agent 18 is composed of the plasticizer-containing hot melt adhesive, the clearing agent 18 has a function as an adhesive, and the upper and lower sheets coated with the clearing agent 18; For example, it can be used as a structural adhesive between the leak-proof sheet 12 and the exterior sheet 20 or between the crepe paper 14 and the leak-proof sheet 12.

The application amount of the clarifying agent 18 is preferably 1 g / m ^{2 to} 30 g / m ^2, and most preferably around 15 g / m ² . If the coating amount is less than 1 g / m ² , transparency is difficult to achieve, and even if the coating amount exceeds 30 g / m ² , clearer transparency cannot be expected, and conversely, the moisture permeability of the leak-proof sheet 12 and the exterior sheet 20 is high. This is not preferable because it causes a decrease, excessive dripping of the clarifying agent 18, and a sticking through the absorber 13 and the use surface.

  Further, the total area on which the clarifying agent 18 is applied is 50% or less with respect to the area of the leak-proof sheet 12. This is because if it exceeds 50%, the water vapor transmission rate is lowered, causing stuffiness.

  The leak-proof sheet 12 to which the clearing agent 18 is applied is desirably set to a thickness of 0.01 mm or more in order to prevent the clearing agent 18 from passing through.

Next, the arrangement | positioning form with respect to the cross section of the paper diaper 1 of the said indicator 15 and the clearing agent 18 is explained in full detail based on FIGS.
As shown in FIG. 5, the first embodiment is an area in which the indicator 15 is applied to the inner surface side of the leak-proof sheet 12 and overlaps at least a part or all of the indicator 15, and the leak-proof sheet. The clearing agent 18 is applied to the outer surface side of 12. In the present embodiment, the indicator 15 is directly applied to the inner surface side of the leak-proof sheet 12 and the clearing agent 18 is applied to the opposite surface side thereof. The visibility of the indicator 15 can be improved directly.

  In the second embodiment, as shown in FIG. 6, the absorbent body 13 is surrounded by the crepe paper 14, the indicator 15 is applied to the outer surface side of the crepe paper 14, and the outer surface side of the leak-proof sheet 12 is transparent. The agent 18 is applied. In this embodiment, since the indicator 15 is directly applied to the outer surface side of the crepe paper 14, a visual change due to contact with excrement can be more effectively exhibited. Further, since the indicator 15 is applied to the outer surface side of the crepe paper 14 and the clearing agent 18 is applied to the outer surface side of the leak-proof sheet 12, the in-line manufacturing can be facilitated. In addition, when the absorber 13 is surrounded by the core wrap sheet which consists of a nonwoven fabric instead of the crepe paper 14 or with the crepe paper 14, the indicator 15 may be applied to the core wrap sheet. Further, the clarifying agent 18 may be applied to the inner surface side of the leak-proof sheet 12.

  In the third embodiment, as shown in FIG. 7, the absorber 13 is surrounded by the crepe paper 14, the indicator 15 is applied to the inner surface side of the crepe paper 14, and the outer surface side of the leak-proof sheet 12 is transparent. The agent 18 is applied. In this embodiment, since the indicator 15 is applied to the inner surface side of the crepe paper 14, a visual change due to contact with excrement can be more effectively exhibited. As in the second embodiment, when the absorber 13 is surrounded by a core wrap sheet made of non-woven fabric instead of the crepe paper 14 or together with the crepe paper 14, the indicator 15 is applied to the core wrap sheet. You may be made to do. Further, the clarifying agent 18 may be applied to the inner surface side of the leak-proof sheet 12.

  In the fourth embodiment, as shown in FIG. 8, a clearing agent 18 is applied to the inner surface side of the leak-proof sheet 12, and an indicator 15 is provided on the upper surface of the clearing agent 18. It is. In this embodiment, the indicator 15 uses a material other than ink, that is, an adhesive or a sheet-like member having an indicator function.

  On the other hand, an example of a plan view arrangement form of the indicator 15 and the clarifying agent 18 will be described in detail. As shown in FIG. 9, an example of the arrangement form in plan view is that the clarifying agent 18 is applied in the application direction along the longitudinal direction of the application area of the indicator 15 (FIG. 9A), orthogonal to the application area of the indicator 15. Any of the application forms (FIG. (B)) may be used, and either one form of applying the clearing agent 18 (FIG. (A)) or multiple forms (FIG. (B)) may be applied. Is optional. Further, as shown in FIG. 5C, a stool pocket 19 for storing and holding excrement is provided at the buttocks contact portion of the absorber 13, and a region including at least a part of a region corresponding to the stool pocket 19 The clearing agent 18 can be applied to the surface. Thereby, when excrement is stored and held in the stool pocket 19, this excrement can be made visible from the outside.

[Other examples]
(1) In the above embodiment, the present invention has been described by taking a pants-type disposable paper diaper as an example, but the present invention can be similarly applied to a tape-type disposable diaper. Moreover, in the said form example, although it was set as the paper diaper structure of the type which assembles the absorptive main body 10 and the exterior | packing sheet 20 at the last process, this invention is between a liquid-permeable surface sheet and a liquid-impermeable back sheet. The present invention can be applied to a general paper diaper having an absorber interposed therebetween.

It is a product state appearance view of disposable paper diaper 1 concerning the present invention. It is the development view. It is an exploded view of the disposable paper diaper. FIG. 3 is a development view of the exterior sheet 20. It is the VV arrow directional view of FIG. 2 which shows the 1st example of arrangement | positioning of the indicator 15 and the clearing agent 18. FIG. It is the VV line arrow directional view of FIG. 2 which shows the 2nd example of arrangement | positioning of the indicator 15 and the clearing agent 18. FIG. It is the VV arrow directional view of FIG. 2 which shows the 3rd example of arrangement | positioning of the indicator 15 and the clearing agent 18. FIG. It is the VV arrow directional view of FIG. 2 which shows the 4th example of arrangement | positioning of the indicator 15 and the clearing agent 18. FIG. (A)-(B) are top views which show the example of arrangement | positioning form of the indicator 15 and the clearing agent 18. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Disposable paper diaper, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Leak-proof sheet, 13 ... Absorber, 14 ... Crepe paper, 15 ... Indicator, 16 ... Gathered nonwoven fabric, 17 ... Yarn elastic elastic member 18 ... Clarifying agent, 19 ... Stool pocket, 20 ... Exterior sheet, 20A ... Upper layer nonwoven fabric, 20B ... Lower layer nonwoven fabric, 21, 22 ... Side joint edge, 23 ... Around waist opening, 24 ... Elastic elastic member , 25 ... waist elastic elastic member, 29 ... leg circumference cut line, F ... front body, B ... back body

Claims (8)

In a disposable paper diaper in which an absorbent body is interposed between a liquid-permeable surface sheet and a liquid-impervious leak-proof sheet, and an exterior sheet is integrally provided on the outer surface side of the leak-proof sheet,
An indicator that shows a visual change due to contact with moisture or body fluid is provided on the inner surface side of the leak-proof sheet, and is an area that overlaps at least a part or all of the indicator, and an outer surface of the leak-proof sheet A disposable paper diaper characterized in that a clearing agent is applied to the side or the inner surface side in order to improve the visibility of the indicator.   The liquid-impermeable leak-proof sheet is a microporous sheet having moisture permeability, and the clearing agent is a liquid or solid oil, paraffin, glycerin and a plasticizer-containing hot melt adhesive. The disposable paper diaper of Claim 1 using what was mix | blended in any one or arbitrary combinations.   The liquid-impervious leak-proof sheet is a microporous sheet having moisture permeability, and the clearing agent is composed of tri (capryl / capric acid) glycerin, ester and 125 ° F. solid paraffin. The disposable paper diaper according to claim 1.   The disposable paper diaper in any one of Claims 1-3 by which the said indicator is apply | coated to the inner surface side of the said leak-proof sheet, and the clearing agent is apply | coated to the outer surface side of the said leak-proof sheet.   The absorbent body is surrounded by crepe paper and / or nonwoven fabric, the indicator is applied to the crepe paper or nonwoven fabric, and a clearing agent is applied to the outer surface side or inner surface side of the leak-proof sheet. The disposable paper diaper according to any one of?   The disposable paper diaper according to any one of claims 1 to 3, wherein the clearing agent is applied to an inner surface side of the leak-proof sheet, and the indicator is provided on an upper surface of the clearing agent.   The disposable diaper according to any one of claims 1 to 3, wherein the indicator is a sheet-like member that includes indicator reaction means and is disposed between the leak-proof sheet and the absorber. A stool pocket for storing and holding excrement is provided in the buttocks contact portion of the absorber, and the clearing agent is applied to a region including at least a part of a region corresponding to the stool pocket. The disposable paper diaper according to any one of the above.

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