JPH053889A - Disposable diapers - Google Patents

Abstract

(57) [Summary] [Purpose] The top sheet has good followability to the wearer, and the solid waste is wrapped in the top sheet and the top sheet is separated and discarded separately from the diaper body, or the water flow of the toilet bowl is used. Providing a disposable diaper that can easily dispose of solid waste by disposing of solid waste only. [Structure] The disposable diaper 11 is separably arranged on the liquid-permeable top sheet 12, the liquid-impermeable back sheet 13, the absorber 14 located between the two sheets, and the top sheet 12. In a disposable diaper having a liquid-permeable top sheet 15, the top sheet 15 has elastic stretchable members 29 stretched on both sides along the longitudinal direction, and at least both ends 25 in the longitudinal direction of the top sheet 15, 26 is fixed to the surface sheet 13, and at least one end of both end portions 25, 26 is removable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly to a disposable diaper having a surface sheet for discarding excrement.

[0002]

2. Description of the Related Art Conventionally, as the name implies, disposable diapers have been designed with the intention of discarding them after use. The method of discarding them is to wrap the excrement with the entire disposable diaper. Further, it is generally stopped with a tape fastener or the like and discarded in a trash box or the like.

However, for a short period of time, it is not hygienically preferable to store the excrement wrapped in a diaper in a trash box at home, and a disposable diaper that has been used outdoors, for example, in a park, etc. Environmental sanitation problems such as being left as garbage have also occurred. In addition, some users or caregivers of disposable diapers remove the solid part of excrement such as feces from the diaper and flush it into the toilet bowl in order to reduce the above-mentioned problems, and then discard the disposable diaper. Seems to be doing.

[0004] However, such a treatment operation is usually performed by putting a disposable diaper on a toilet bowl and then throwing it away. Adhesive stool is difficult to remove and the operation is complicated.
This will stain the hand of the handler and lack the essential functionality of the disposable diaper. Further, during such treatment, there is a disadvantage that the disposable diaper absorbs water in the toilet bowl and becomes heavy, and dripping occurs. Or, it may cause the diaper to accidentally flow into the toilet bowl, causing the drain pipe to become clogged.

In order to solve such a problem, as a means for easily treating and discarding the excrement held on the surface sheet of the disposable diaper, US Pat. No. 2450059, JP-B-53-53 has been proposed.
There are 26175 publications, but these publications disclose disposable diapers in which the topsheet has a laminated structure and the uppermost layer is peeled off to wrap the excrement to facilitate disposal.

Further, Japanese Patent Publication No. 54-29932 discloses a construction having a separable central portion and an inner sheet on which the excreted waste can be discarded together with the central portion. Has been done.

[0007]

However, in the above-mentioned conventional technique, the entire surface of the top sheet is adhered to the back sheet or the absorber, and therefore the skin cannot fully follow the movement of the wearer. There is an inconvenience that it is easy to separate from. Further, these techniques discard the absorbent layer made of a surface sheet or fluff pulp from the toilet together with the excrement, but recently disposable diapers are water-insoluble materials such as synthetic fibers and super absorbent polymers. Is often used, so it is not recommended to discard it from the toilet bowl. Also,
The operation of peeling the uppermost layer of the surface sheet and wrapping the excrement requires a considerable amount of attention and skill in the peeling and the wrapping operation of the excrement because the uppermost layer is thin, and the operability is poor. There is.

Therefore, an object of the present invention is that the top sheet has good followability to the wearer, and the solid excrement is wrapped in the top sheet and separated and discarded separately from the diaper body, or by the water flow of the toilet bowl. It is an object of the present invention to provide a disposable diaper that can easily dispose of solid waste by discarding only solid waste.

[0009]

The present invention is directed to a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorber positioned between the two sheets, and a liquid-permeation layer disposed on the topsheet. In a disposable diaper having a flexible top sheet, the top sheet is elastically stretchable on both sides along the longitudinal direction, and at least both ends in the longitudinal direction of the top sheet are fixed to the top sheet,
Further, the above object is achieved by providing a disposable diaper characterized in that at least one of both ends is removable.

[0010]

According to the disposable diaper of the present invention, at least the front and rear end portions of the top sheet are fixed, and the top sheet is formed in a U-shape that easily fits the crotch part, so that it can follow the crotch shape of the wearer. Moreover, since the elastic stretchable member stretched over the upper sheet forms a pocket during wearing, leakage of solid excrement is prevented.

After the excrement is excreted, the disposable diaper is removed from the wearer, and both sides of the upper sheet are pulled together so as to wrap the excrement, and the fixed portion of the upper sheet is peeled off from the top sheet. . At the time of peeling, at least one end is removable, so that the top sheet can be easily peeled off. In such a case, both side portions of the top sheet are separated from the top sheet by the elastic expansion and contraction member arranged on the top sheet, and a space is formed in the central portion.

At the same time when the top sheet is peeled off, the elastic expansion / contraction member wraps the excrement, that is, a substantially bag-like shape, so that the upper end portion thereof can be easily grasped. Therefore, the bag-shaped upper end is picked up, and the upper sheet is discarded as it is in a toilet bowl or the like. Alternatively, it is possible to flush the excrement from the top sheet with the water flow of the toilet bowl and discard the top sheet separately.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a plan view of a disposable diaper 11 according to the present invention in a flatly stretched state.
In order to show the structure of
It is the figure which showed the surface which contacts a wearer upwards.

As shown in FIG. 1, a disposable diaper 11
Is a liquid-permeable topsheet 12, a liquid-impermeable backsheet 13, an absorber 14 located between the two sheets, and a liquid-permeable topsheet separably disposed on the topsheet 12. In the disposable diaper having No. 15, elastic elastic members 29 are stretched on both sides along the longitudinal direction of the top sheet 15, and at least both ends 25 and 26 in the longitudinal direction of the top sheet 15 are the top sheet 13. And at least one end of both ends 25, 26 is removable.

The disposable diaper 11 is formed with a back side waist portion 21, an abdominal side waist portion 23, and a portion 22 in the longitudinal direction thereof, and further, a side flap 24 outwardly in the lateral direction of the absorbent body 14. Has been extended. In this side flap 24, the side flap elastic body 17 is arranged between the back sheet 13 and the top sheet 12, and the gathers are formed on the legs of the wearer to improve the fittability and prevent leakage. ing.

The diaper 11 is formed in a vertically long rectangular shape, and the back sheet 13 and the top sheet 12 are
It has an approximate length and width. As the back sheet 13, a low-density opaque polyethylene sheet having a thickness of 10 to 60 μ is generally used, but it has a particularly small squeaky sound and is vapor permeable and liquid impermeable porous that does not easily cause stuffiness or fogging. Sheets are preferred. Here, the “sharp sound” means a sound generated when a sheet or the like is rubbed. A non-woven fabric having a basis weight of 15 to 40 g / m ² is generally used as the topsheet 12, but a film, a net or the like may be used as long as it is liquid permeable, and the periphery is particularly water repellent and the central part is hydrophilic. Those are preferable.

The side flap elastic body 17 is generally made of polyurethane, natural rubber or the like in the shape of a string, a ribbon or the like, or a thread or the like which exhibits elasticity when wet with water. Install one or more on each side flap, up to about five. The attachment length of the side flap elastic body 17 is about 30 times the length of the diaper.
~ 60%, the degree of elongation is about 1.3-2.0 of the free length
Double is preferred.

As the absorber 14, a cotton-like material obtained by crushing softwood kraft pulp and covered with water-absorbent paper is generally used, and one containing a superabsorbent polymer is particularly preferable. The flocs generally weigh about 10 g to 40 g. The position of the superabsorbent polymer used in the absorber may be the upper, middle, or lower layer in the absorber or mixed with the pulp, and the superabsorbent polymer particles may be starch-based, cellulose-based, or synthetic polymer-based particles. Suitable examples include starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, crosslinked sodium carboxymethyl cellulose, and acrylic acid (salt) polymers. Such superabsorbent polymer particles have a liquid-absorptive retention power of 20 times or more of their own weight, and have the property of gelling.

The liquid-permeable top sheet 15 extends along the longitudinal direction of the disposable diaper 11 on the top surface of the top sheet 12, and the front and rear end portions of the back waist 21 and the abdominal waist 23 thereof. 25 and 26 are adhered and fixed onto the topsheet 12, the middle part not being adhered and forming the free part 27. Although the present embodiment shows an example in which the middle portion of the liquid permeable top sheet 15 is not fixed, the middle portion can be peeled off in consideration of the U-shaped shape retention of the top sheet having a high fitting property. It may be fixed by adhesion.

The width of the top sheet 15 is 1
The width of 1 is preferably about 30 to 70%, and the narrower the width of the crotch portion 22 of the absorbent body 14, the more effectively the absorbent performance of the absorbent body 14 can be utilized. The length of the top sheet 15 does not have to be the same as that of the diaper 11, and it is preferable that the length is substantially short. The planar shape of the top sheet 15 is the top sheet 1
The free part 27 allows the 5 to adhere well to the crotch of the wearer.
It is preferable to use an hourglass type in which the width of the front end 25, 26 is narrow and the width of the front end 25, 26 is the same as the width of the free portion 27. 25,
It may be wider than 26.

The elastic stretchable members 29, 29 arranged on the upper sheet 15 are stretched on both sides along the longitudinal direction of the upper sheet 15, and as shown in FIG. The bag-shaped pocket 31 is formed and the gather 32 is formed. By forming such a pocket 31, the solid waste A
Is held on the upper sheet 15 during wearing and the gather 32 is fitted to the wearer to prevent the solid excrement A from protruding.

The material of the top sheet 15 is non-woven fabric,
A liquid-permeable sheet such as a mesh sheet, a sheet having porosity, or a sheet having elasticity is used, but in order to prevent leakage of moisture-rich stool, so-called loose stool, the upper sheet has an absorption capacity of 5 g / cm ² or more. May be absorbed.
In addition, a material that dissolves in water may be used so that it can be poured into a toilet bowl or the like as it is. Examples of such a water-soluble material include a sheet made by wet papermaking of rayon and / or pulp, a sheet formed by a water-soluble resin such as polyvinyl alcohol, and the like.

The peeling force when peeling the top sheet 15 is 35 g / 25 mm or more and 150 g / 25 mm or less, preferably 50 g / 25 mm or more and 100 g / 25 mm or less, and 25 g / 25 mm or more and 100 g / 25 mm or less when wet. It is preferably 25 g / 25 mm or more and 75 g / 25 mm or less. Within such a range, the top sheet 15 does not peel off during and during wearing,
This is because when the solid waste after excretion is discarded, the top sheet can be easily peeled off and discarded. Further, the top sheet 15 and the top sheet 12 are not torn when peeled. Such peeling force can be obtained by, for example, the interval between the slits 28 or the front and rear end portions
It can be easily controlled by adjusting the adhesive force of 5, 26.

The peel strength test method is as follows.
A sample piece is cut out from the fixed portion of the top sheet 15 and the top sheet 12 with a width of 25 mm, the ends of both sheets are pulled by a Tensilon tensile tester, and the strength is measured. The measurement of the peel force during dryness is performed under the conditions of 20 ° C. and 60% RH, and the peel force during wetness is determined by saturating the sample piece with water.

As the adhesive, a hot melt type adhesive is preferable, but as a property, the top sheet 1 when peeled off.
It is preferable that the adhesive remains on both 5 and the topsheet 12. This is because it is hygienic because the top sheet 15 can be rolled and fixed and discarded, and by fixing a new uncontaminated top sheet on the top sheet 12,
This is because it can be used again as a diaper.

Next, the operation of this embodiment will be described. When worn, like the normal disposable diaper, the top sheet 15
The back waist 21 so that it touches the wearer's skin.
On the back side and the abdominal waist portion 23 on the abdominal side, and the tape fastener 16 is attached and attached to the target tape 33 (see FIG. 2) on the abdominal side.

In the state of being worn, the side flap elastic members 17 form leg gathers on the legs of the wearer to prevent excrement from leaking, and the top sheet 15 has pockets 31 in its free portion 27. To form a solid waste material. Furthermore, the top sheet 15
Fix at least the front and rear end portions 25 and 26 thereof so as to conform to the shape of the crotch, and the free portion other than the fixed portion follows the movement of the wearer separately from the disposable diaper 11 to fit the top sheet 15. Is improved. Further, since the elastic expansion and contraction members 29, 29 stretched over the upper surface sheet 15 bring the upper surface sheet 15 into close contact with the wearer's skin, the fit of the upper surface sheet 15 is further enhanced. Therefore, it is possible to reliably prevent the solid waste A from leaking from the top sheet 15.

Next, when the solid excrement A is discarded, the elastic expansion and contraction members 29, 29 of the top sheet 15 lift both sides of the top sheet 15 from the top sheet to form a space between the top sheet 15 and the top sheet 12. Both sides of the top sheet 15 are aligned so as to wrap the solid waste A, and the fixed portions at the front and rear ends are removed. Then, in that state, the elastic expansion / contraction member 2
Since 9 and 29 expand and contract, the both ends in the longitudinal direction approach each other, and the top sheet 15 is rolled into a bag shape.
No solid waste is removed during processing. Therefore,
As shown in FIG. 3, the upper sheet 15 is formed into a bag shape and the solid excrement A is suspended, and the solid excrement A is discarded as it is in a toilet bowl or the like. Alternatively, the excrement may be washed out of the top sheet 15 by the water flow of the toilet bowl, and the top sheet 15 may be discarded separately. Therefore, the solid excrement can be easily removed from the disposable diaper with one hand and discarded in a toilet bowl, etc., so that the feces are removed, and even if the disposable diaper is left as ordinary garbage, environmental hygiene can be compromised. Absent.

The top sheet 15 discarded in the toilet bowl is
If it is water-soluble, it will be dissolved and the treatment will be simple. The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the scope of the present invention. For example, the free portion 27 may be formed with intermittent slits (so-called perforations) along the width direction at positions close to the front and rear ends 25, 26. This makes it possible to sufficiently resist the force in the longitudinal direction, and at the time of discarding, the top sheet can be easily torn in the width direction.

The front and rear end portions 25, 26 of the top sheet
It suffices that at least one of these is removable. That is, the both ends 25, 26 are not necessarily fixed detachably, but the one end 25 (or 2
6) may have a configuration in which it is completely fixed and does not come off.

[0031]

EFFECTS OF THE INVENTION According to the disposable diaper of the present invention, the followability to the wearer is good, and the solid excrement is wrapped in the upper sheet and separated and discarded separately from the diaper body, or by the water flow of the toilet bowl. By discarding only the solid waste, the solid waste can be easily treated.

[Brief description of drawings]

FIG. 1 is a plan view of a disposable diaper according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an operation of discarding solid excrement in the disposable diaper shown in FIG.

FIG. 3 is a perspective view showing an operation of discarding solid excrement in the disposable diaper shown in FIG.

[Explanation of symbols]

11 Disposable diapers. 12 Surface sheet 13 Back sheet 14 Absorber 15 Top sheet 25, 26 both ends 29 Elastic member

Claims (7)

[Claims] 1. A disposable diaper having a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent body located between the two sheets, and a liquid-permeable topsheet disposed on the topsheet. In the above-mentioned top sheet, elastic elastic members are stretched on both sides along the longitudinal direction, at least both ends in the longitudinal direction of the top sheet are fixed to the top sheet, and at least one end of both ends is removed. A disposable diaper characterized by being possible. 2. The disposable diaper according to claim 1, wherein the top sheet is bonded to the top sheet with an adhesive. 3. The disposable diaper according to claim 2, wherein the adhesive remains on each of the top sheet and the top sheet when the top sheet is peeled from the top sheet. 4. The top sheet is 35-150 g / 25 mm when dry and 25-10 when wet with respect to the top sheet.
The disposable diaper according to any one of claims 1 to 3, which has a peeling force of 0 g / 25 mm. 5. The disposable diaper according to claim 1, wherein the top sheet is soluble in water. 6. The disposable diaper according to claim 1, wherein the top sheet is fixed by perforations so that the top sheet can be broken. 7. The top sheet has an absorption capacity of 5 g / cm.
^{It is 2} or more, The disposable diaper in any one of Claims 1-6 characterized by the above-mentioned.