JPH04295356A - Paper diaper - Google Patents

Abstract

PURPOSE:To allow a paper diaper to fully exhibit its effect of stopping a soft bowel movement by preventing a barrier cuff from warping outward and falling inward. CONSTITUTION:A barrier cuff B comprises a sheet which is substantially continued in its cross direction and an elastically expanding member 5, and forms two near ends 51, 52 bound to a paper diaper main body and a free far end 60. The elastically expanding member 5 is disposed at the far end 60 and one 52 of the near ends is located in a flap and the other near end 51 is located inside the side edge of an absorber 3. The barrier cuff B is substantially folded inward when the paper diaper is not used but in its extended state, and only the front and rear end portions of the barrier cuff B are fixed to the respective portions of the paper diaper main body with the elastically expanding member 5 located at the folded side edge portion of the cuff B, and the middle portion of the barrier cuff B is freely erected by the contracting force of the elastically expanding member 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper having a chevron-shaped barrier cuff with an inclined cross section when in use.

0002

BACKGROUND OF THE INVENTION There have been significant improvements in disposable diapers in recent years, and a typical example of these improvements is the formation of barrier cuffs on both sides of the disposable diaper to prevent side leakage of loose stools.

For example, Japanese Patent Laid-Open No. 62-250201 discloses a structure in which a single barrier sheet is fixed to the flap portion as the proximal end, and an elastic elastic member is provided at the free distal end, and its modification. For example, the topsheet may be extended and folded up in the middle of a flap portion to form a barrier cuff, with the side edge of the folded portion being the distal end;
A structure in which the upright portion is the proximal end is also disclosed. Although there are many other proposals, there are many variations based on the above-mentioned published technique.

0004

[Problems to be Solved by the Invention] However, in the paper diaper described in the above-mentioned publication, during use, the barrier cuffs, which stand up while tilting inward, tend to fall down, and as a result, the leg area and the free side edges of the barrier cuffs tend to fall down. There is often a gap between the two, and as a result, loose stool or urine can cross the gap, causing side leakage.

Furthermore, the above publication discloses that forming a pocket space or channel between the proximal end of the barrier cuff and the side edge portion of the absorbent body is effective in preventing loose stools. However, according to the findings of the present inventors,
Its effectiveness could not be confirmed.

[0006] Therefore, an object of the present invention is to prevent the barrier cuff from falling down as much as possible.

[0007]

[Means for Solving the Problems] The above object is to provide a paper diaper in which an absorbent body is covered with a liquid-impermeable sheet and a liquid-permeable sheet, and barrier cuffs are provided on both sides of the diaper and protrude toward the use side. Barrier cuffs are composed of a sheet that is substantially continuous in the width direction and an elastic stretchable member, and have two proximal ends bound to the disposable diaper body and one free distal end. said elastic elastic member is disposed in the diaper, one proximal end being in the flap and the other proximal end being located inwardly of the side edge of said absorbent body, the barrier cuff being substantially inwardly located in the unused deployed state of the disposable diaper. When the barrier cuffs are folded, and the elastic stretchable members are positioned at the side edges of the fold, only the front and rear ends of the barrier cuffs are fixed to the main body of the disposable diaper, and the middle part is freely erected by the contractile force of the elastic stretchable members. It can be solved by doing this.

[0008]

[Operation] The barrier cuff according to the present invention is composed of a sheet that is substantially continuous in the width direction and an elastic elastic member,
The diaper has two proximal ends bound to the disposable diaper body and one free distal end, the elastic elastic member is disposed at the distal end, one of the proximal ends is in the flap, and the other is in the flap. The barrier cuffs are located inside the side edges of the absorbent body, and the barrier cuffs are folded substantially inward when the disposable diaper is in an unused unfolded state, and the elastic stretchable members are located at the folded side edge portions of the barrier cuffs. Only the front and rear ends are fixed to the main body of the disposable diaper, and the middle part is made to stand up freely due to the contractile force of the elastic elastic member, so that in the upright state, the apex of the scalene triangle forms a barrier cuff that is located inward from the center. Become.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in more detail below with reference to the drawings. 1 and 2 show a first embodiment. In the paper diaper according to the present invention, between the liquid-impermeable sheet 1 made of polyethylene or the like and the liquid-permeable sheet 2 made of non-woven fabric or the like, a sheet made of cotton-like pulp or the like is formed, for example, in a rectangular shape or preferably with a certain degree of rigidity as shown in the figure. An absorbent body 3 having the following properties is interposed. The absorbent body 3 can be wrapped in absorbent paper (not shown) to maintain its shape. The liquid-impermeable sheet 1 extends outward from the periphery of the absorbent body 3 and has an hourglass shape. The lateral extending portion of the liquid-impermeable sheet 1 includes a flap F along with a barrier sheet 4 to be described later.
Configure. The lateral shape of the liquid-permeable sheet 2 is almost the same as that of the absorbent body 3.
It has a similar shape to the side edge shape of the absorber 3, extends slightly outward from the side edge of the absorbent body 3, and is fixed to the liquid-impermeable sheet 1 with a hot melt adhesive or the like. The longitudinal ends coincide with the disposable diaper.

[0010] Barrier cuffs B, B protruding toward the use side are formed on both sides of the disposable diaper, and the barrier cuffs B are formed with a barrier sheet 4 that is substantially continuous in the width direction, or as shown in the figure. It is composed of a plurality of elastic elastic members 5, 5. Furthermore, barrier cuffs B are
It is formed by folding the barrier sheet 4,
It has two proximal ends 51, 52 bound to the disposable diaper body and one free distal end 60, and the elastic elastic members 5, 5 are disposed at this distal end 60, and one of the proximal ends 52 is located on the flap F, and the other 52 is located inside the side edge of the absorbent body 3.

To explain in more detail, the barrier sheet 4
The outer part of the gasket cuff elastic elastic members 7, 7
, 7 are fixed to the liquid-impermeable sheet 1 with a hot-melt adhesive or the like, and the inner part is fixed to the liquid-permeable sheet 2 with a hot-melt adhesive or the like at a location that almost corresponds to the side edge of the absorbent body 3. The middle part between these two fixed parts is a free part. In this free folding portion, the disposable diaper is substantially folded inward in an unused unfolded state (as shown by the imaginary line in FIG. 2), and the elastic elastic members 5, 5 are enclosed in the folded side edge portions. and is fixed to the barrier sheet 4. On the other hand, the front and rear ends of the free portion of the barrier sheet 4 have their folded inner surfaces as shown in FIG.
In the hatched area, it is fixed to the upper surface of the liquid-permeable sheet 2 with a hot melt adhesive or the like, and is restrained to the paper diaper body.

Therefore, the intermediate portion in the longitudinal direction of the barrier sheet 4 excluding this restrained portion is free, and when the barrier sheet 4 assumes a boat shape in the front-rear direction when worn, the contraction force of the elastic elastic members 5, 5 As shown by the solid line in 2, it is designed to stand up. This standing up creates barrier cuffs B. 6 is a fastening tape.

The barrier cuffs B, B come into contact with the wearer's legs, and the barrier cuffs B, B and the liquid-permeable sheet 2 form a substantially trapezoidal confined space that is open upward. When urine is urinated into this space, the urine passes through the liquid-permeable sheet 1 and is absorbed into the absorbent body 3, and the barrier cuffs B and B act as a barrier to prevent the solid content of loose stool from crossing over. Ru. In the event that urine leaks sideways over the upright side edges of the barrier cuffs B, B, the gasket cuffs formed by the elastic stretchable members 7 prevent the urine from leaking sideways.

On the other hand, barrier cuffs B according to the present invention include:
As shown in FIG. 2, in the upright state, the apex of the scalene triangle is located inward from the center. This shape prevents it from curling outward when worn.
Good barrier properties. Moreover, it is basically prevented from lying down inward. The reason why this inward fall is prevented is as follows. That is, the elastic stretchable member 5
, 5 act to maintain the straight line due to their contractile force. At this time, when the front and back of the disposable diaper assumes a boat shape during wear, a force acts against the straightening of the elastic elastic members 5, 5. Therefore, as shown in FIG. 2, the free portion of the barrier cuff B excluding the front and rear ends is drawn from the distal end 60 toward the proximal end 52, causing an upright position and Barrier cuff B
retains its shape. Conversely, even if the side edge of the barrier cuff B moves outward or inward from this balanced state, since both lengths are regulated, it will not warp outward or fall inward. Falling down is prevented. moreover,
The proximal end 51 is located inward from the side edge of the absorbent body 3. Therefore, that part has a certain degree of rigidity, is stable in shape, and follows the shape of the ship well, so that the above-mentioned effect becomes even more apparent.

The invention includes other variations. In the second embodiment, as shown in FIG. 3, the liquid-permeable sheet 2 is extended, and preferably the zone Z portion is water-repellent treated with silicone or the like.

In the third embodiment, as shown in FIG. 4, a liquid-permeable sheet 2 is stood up, and a barrier sheet 4 is placed on top of the liquid-permeable sheet 2. Even with such a configuration,
When viewed as a barrier sheet, it is a substantially continuous sheet in the width direction.

The fourth embodiment is similar to the third embodiment, and as shown in FIG. 5, only the side edge portions are folded back and the liquid-permeable sheet 2 is fixed to the base portion thereof.

The fifth embodiment is an example in which the flap is formed only by the barrier sheet 4, as shown in FIG.

In the sixth embodiment, as shown in FIG. 7, a liquid-permeable or liquid-impermeable sub-band 7 is attached to the back side of the outside portion of the barrier sheet 4.

In the seventh embodiment, as shown in FIG. 8, a straddle band 8 is provided on the inside of the barrier cuff B, spanning the inner surface of the inner raised surface and the inner surface of the outer raised surface of the barrier sheet 4. It is fixed. In the eighth embodiment, as shown in FIG. 9, the side edge portions of the barrier sheet 4 are fixed to each other with an adhesive or the like. In the seventh and eighth embodiments, there is no need to fix the elastic elastic member 5 to the barrier sheet 4 at the intermediate portion in the front-rear direction.

It is preferable that the barrier sheet 4 is basically liquid-impermeable or water-repellent, but even if it is liquid-permeable, it still has the effect of inhibiting loose stools.

[0022]

As described above, according to the present invention, it is possible to prevent the barrier cuffs from warping outward and falling inward, and the effect of preventing loose stools is fully exhibited.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of a disposable diaper according to the present invention in an unfolded state.

FIG. 2 is a perspective view of the main part thereof.

FIG. 3 is a schematic sectional view of main parts of a second example.

FIG. 4 is a schematic sectional view of main parts of a third example.

FIG. 5 is a schematic sectional view of main parts of a fourth example.

FIG. 6 is a schematic sectional view of main parts of a fifth example.

FIG. 7 is a schematic sectional view of main parts of a sixth example.

FIG. 8 is a schematic sectional view of main parts of a seventh example.

FIG. 9 is a schematic sectional view of main parts of an eighth example.

[Explanation of symbols]

1. Liquid-impermeable sheet 2 Liquid permeable sheet 3 Absorber 4 Barrier sheet 5 Elastic stretchable member 51, 52 Proximal end 60 Distal end B Barrier cufflinks F Flap member

Claims (3)

[Claims] 1. A paper diaper in which an absorbent body is covered with a liquid-impermeable sheet and a liquid-permeable sheet, and barrier cuffs are provided on both sides and protrude toward the use side, wherein the barrier cuffs have a width substantially equal to the width of the diaper. It is composed of a sheet continuous in the direction and an elastic stretchable member, and has two proximal ends bound to the disposable diaper body and one free distal end, and the elastic stretchable member is arranged at the distal end. , one of the proximal ends is in the flap;
The other side is located inside the side edge of the absorbent body, and the barrier cuff is substantially folded inward when the disposable diaper is in an unused unfolded state, and the elastic elastic member is located at the folded side edge portion. A paper diaper characterized in that only the front and rear ends of the barrier cuffs are fixed to the main body of the paper diaper, and the middle part is freely erected by the contractile force of an elastic elastic member. 2. The paper diaper according to claim 1, wherein the sheet constituting the barrier cuffs comprises a sheet having at least water repellency and separate from the liquid-permeable sheet. 3. The paper diaper according to claim 1, wherein the sheet constituting the barrier cuffs is made up of a portion of the liquid-permeable sheet, and at least the barrier cuffs are treated to be water repellent.