JPH04152947A - Paper diaper - Google Patents

Abstract

PURPOSE:To surely prevent lateral leakage by rising the base part of a barrier cuff to a certain height by a second elastic expansion member and rising the side edge of a barrier sheet outward by a first elastic expansion member positioned outside. CONSTITUTION:A barrier sheet 6 has a fixed elastic expansion member 7B in the middle in its cross direction between it and a surface sheet 5 and an elastic expansion member 7A at its free end. Meanwhile, the intermediate part of the sheet 5 in its cross direction is fixed to a liq.-permeable sheet 2 with a hot-melt adhesive, both sides are not fixed to the liq.-permeable sheet 2, made free and fixed to the middle of the riser part of the barrier sheet 6 through the members 7B, 7B and 7B. The members 7A and 7B are fixed to the longitudinal ends of paper diaper with a hot-melt adhesive, etc., and the member 7A is positioned by the paper diaper and the member 7B inside the diaper. As a result, the barrier cuff is not significantly dislocated, and lateral leakage is prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a disposable diaper with barrier cuffs.

[Conventional technology]

In recent years, paper diapers having barrier cuffs have been proposed, and some of them are in practical use.

This type of paper diaper attempts to prevent side leakage of loose stool with barrier cuffs.

As a typical example, JP-A-62-250201
The technique described in Japanese Patent No. 62-231004 has been proposed. In this case, it is also known to provide gasket cuffs on the outside of the barrier cuffs together with the barrier cuffs. In any case, the barrier cuffs of conventional paper diapers basically have one elastic stretchable member in the width direction, and the barrier cuffs simply protrude inwardly or vertically.

[Problem to be solved by the invention]

The barrier cuffs are effective for blocking loose stools, but if the barrier sheet simply protrudes diagonally from the outside inward or stands up vertically, the inner edge of the barrier cuffs may If the part deviates from its normal position in the width direction, loose stools tend to leak sideways.

Furthermore, if the inner edges of the barrier cuffs are tightly fitted to the wearer in order to reliably prevent the side leakage of loose stool or urine, this may damage the wearer's skin.

Therefore, the main object of the present invention is to reliably prevent leakage of loose stool or urine even if the barrier cuffs fit weakly against the wearer's skin, and to prevent misalignment in the width direction of the barrier cuffs. To be less or less like.

[Means to solve the problem]

The above problem can be solved by providing an absorbent body on the upper surface of a liquid-impermeable sheet, disposing a liquid-permeable sheet on the upper surface of this absorbent body, and further causing the surface of the disposable diaper to warp due to the contractile force of the elastic elastic member along the front-rear direction of the disposable diaper. In a disposable diaper having barrier cuffs on both sides that protrude, the barrier cuffs include a barrier sheet and an elastic elastic member, and the elastic elastic member has a first elastic elastic member fixed to a side edge of the barrier sheet. member, and a second elastic elastic member fixed to a widthwise intermediate portion of the protruding portion of the barrier sheet;
The second elastic stretchable member is fixed to the front and back ends of the disposable diaper, and the first elastic stretchable member is located on the side of the disposable diaper, and the second elastic stretchable member is located inside the disposable diaper. Solvable.

[Effect]

In the present invention, due to the presence of the second elastic elastic member,
Stand up until the base portion of the barrier cuff reaches a certain height (hereinafter also referred to as an intermediate position). On the other hand, due to the presence of the first elastic stretchable member located outward, the side edges of the barrier sheet rise outward. Therefore, the area from the intermediate position to the side edges of the barrier sheet is diagonal. It becomes an area with wings extending outward.

As a result, as will be described later, advantages such as improved fit for the wearer and prevention of misalignment of the barrier cuffs are brought about.

〔Example〕

Hereinafter, the present invention will be explained in more detail by some examples with reference to the drawings.

1 to 4 show a first embodiment.

In the paper diaper according to the present invention, a cotton-like valve or the like is provided between a liquid-impermeable sheet l made of polyethylene or the like and a liquid-permeable sheet 2 made of a nonwoven fabric or the like having a width narrower than that of the liquid-impermeable sheet I. For example, an hourglass-shaped absorbent body 3 having a certain degree of rigidity is interposed.

The absorbent body 3 is wrapped with lip-groove absorbent paper IO to maintain its shape. On the sides of this absorbent body 3, a liquid-impermeable sheet 1 and a preferably hydrophobic barrier sheet 6 are bonded with a hot melt adhesive (the bonded portion is shown by hatching in the plan view and by diagonal lattice in the cross-sectional view). ), a flap F is formed in which no absorbent body 3 is present.

On the other hand, the paper diaper has barrier cuffs B, B on both sides, and the basic components of the barrier cuffs B are a barrier sheet 6 and elastic elastic members 7A, 7B made of rubber thread or the like. The barrier sheet 6 is the liquid-impermeable sheet 1
, and only the outer part is fixed to the liquid-impermeable sheet 1 with a hot melt adhesive, and the inner part is not fixed to the liquid-permeable sheet 2.

The barrier sheet 6 has a second elastic elastic member 7B fixed to the top sheet 5, which will be described later, in the middle in the width direction, and a first elastic elastic member 7A on the free side edge.
has.

On the other hand, the top sheet 5 has its middle portion in the width direction fixed to the liquid-permeable sheet 2 with a hot melt adhesive or the like, and both sides thereof are not fixed to the liquid-permeable sheet 2 and are free portions. Instead, a second elastic elastic member 7B, 7B, 7 is provided between the upright portions of the barrier sheet 6.
It is fixed with B interposed.

The first and second elastic stretchable members 7A17B are fixed to the front and back ends of the disposable diaper with hot melt adhesive or the like, and the first elastic stretchable member 7A is fixed to the side of the disposable diaper, and the second elastic stretchable member 7A is attached to the side of the disposable diaper. 7B is located inside the disposable diaper.

When the barrier sheet 6 is hydrophobic, side leakage of urine and soft stool liquid can be further prevented. However, even if the barrier sheet 6 is hydrophobic, it is desirable to have air permeability. In order to form such a barrier sheet 6, a nonwoven fabric treated to be water repellent may be used. Alternatively, it may be formed from a plastic sheet.

Note that 8 is an elastic waist band made of breathable and liquid-impermeable polyurethane foam, which is interposed between the sheets 1 and 5. 9 is a fastening tape.

The liquid-permeable sheet 2 is arranged to have the width of the absorbent body 3. This liquid-permeable sheet 2 mainly has the function of diffusing urine. Further, a liquid-impermeable band 11 made of polyethylene or the like extends in the longitudinal direction with a width spanning the surfaces of both sides of the liquid-permeable sheet 2 and a position inside the joint of the liquid-impermeable sheet 1. ing. Between the liquid-impermeable band 11 and the liquid-impermeable sheet 1, there is provided one or more elastic elastic members 4 for bending and deformation made of rubber thread or the like, as in the illustrated example.
4 is interposed and fixed with hot melt adhesive. Therefore, this liquid-impermeable band 11 can prevent urine from leaking through the liquid-permeable sheet 2 at this joint, and at the same time can also prevent the hot melt adhesive from seeping out. can. In addition, since the elastic elastic member 4.4 for bending and deformation is provided, the sides of the absorbent body 3 are deformed in an upright manner as the elastic member 4.4 is deformed, so that the absorbent body 3 forms a U-shaped pocket and is used for excretion. It has the effect of increasing the storage and absorption effect of substances. Moreover, since the absorbent body 3, which is originally semi-rigid, stands up, the barrier cuff B can easily stand up, and the upright end of the barrier cuff B has the effect of making good contact with the wearer's skin. .

When the paper diaper according to the present invention is worn, the front and back of the paper diaper are compressed by the contraction force of each elastic stretchable member 4.7A, 7B.
Curved into a can shape. As a result, barrier cuffs B and B come to stand up as shown in FIG. With this standing up,
An approximately trapezoidal space is formed by the standing portion of the barrier sheet 6 and the free portion of the top sheet 5 accompanying the standing up portion, and this forms a pocket space P for soft stool.

In the present invention, in order to allow soft stool to pass through into the pocket space P, it is preferable that a soft stool transmission opening 50 be formed in the upright portion of the top sheet 5 constituting the barrier cuff B. The soft stool permeation openings 50 are formed in advance with a predetermined opening area using a die cutter or the like in the manufacturing stage, preferably on a separate line from or before the assembly process of the disposable diaper. can be formed.

The shape of the soft stool passage port 50 may be any suitable shape such as a circle or an ellipse.

Now, in the present invention, as particularly shown in FIGS. 2 and 4, the second elastic elastic members 7B, 7B, 7
Due to the presence of B, the base portion of the barrier cuff rises up to an intermediate position in relation to the widthwise length of the free portions on both sides of the top sheet 5.

On the other hand, due to the presence of the first elastic stretchable member 7A located on the outside of the paper diaper, the free side edge of the barrier sheet 6 stands up outward.

Therefore, the area from the intermediate position to the side edge of the barrier sheet becomes an area in which the wings extend obliquely outward.

Thus, when the disposable diaper according to the present invention is worn, the wing portions come into contact with the skin of the wearer, and the intermediate portion of the barrier sheet 6 due to the arrangement of the second elastic stretchable members 7B, 7B, 7B in the intermediate portion also comes into contact with the skin.

Urine or feces are excreted between the barrier cuffs 8, 8, and water from urine and loose stools is absorbed into the absorbent body 3 via the top sheet 5 and the liquid-permeable sheet 2.

For soft stool, preferably, the contraction force of the first elastic elastic member 7A is preferably lower than the contraction force of the second elastic elastic member 7B, 7B, 7.
Since the contraction force of B is strengthened, it is mainly blocked at the middle part of the barrier sheet 6, and is prevented from exceeding this. However, whereas in the past there was a problem of the barrier cuffs slipping in the width direction due to movement of the wearer, in the present invention, even if the middle part of the barrier sheet 6 shifts laterally, the wing part Since it is always in contact with the wearer's skin, even if loose stool may exceed the middle part of the barrier sheet 6, the wing part is in contact with the skin, so as a result, the first elastic elastic member It does not exceed 7A and prevents side leakage.

Furthermore, the standing height of the barrier cuffs B becomes higher due to the first elastic stretchable members 7A disposed on the side edges of the barrier sheet 6. As a result, when the soft stool permeation hole 50 is formed, the opening becomes larger.

On the other hand, in order to prevent lateral leakage of loose stools, increasing the width of the barrier cuffs can be considered, but in this case, if the barrier cuffs are not worn properly, the barrier cuffs will not function as intended due to lateral displacement. While there are often
According to the present invention, by forming the barrier cuffs in a cross-sectional shape, the original effect of preventing loose stools is great even when the cuffs are laterally shifted.Furthermore, the entire wing portion is in contact with the wearer's skin, and the frictional force , even if the wearer moves vigorously,
Follows well and prevents side leakage. Furthermore, since the wing portions are open outward, when worn, the wing portions will not come into contact with the wearer's skin and cause improper wearing.

In the first embodiment, the barrier sheet 6 is formed of one sheet, but as shown in FIG. It is also possible to separate them into sheets 1-6A and join them together.

The third embodiment shown in FIG. 6 has a stepped shape when viewed from inside.

In FIG. 7, the free portion of the topsheet 5 is lengthened in the width direction and is used as a barrier sheet.

FIG. 8 shows an example in which the barrier sheet 6 is folded back and doubled in the wing portion.

FIG. 9 shows a modification to the example of FIG. 6.

Furthermore, in the present invention, the provision of the topsheet 5 is not essential, and the barrier cuff B can be formed only with the barrier sheet 6, as shown in FIG.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to prevent side leakage with less displacement of the barrier cuffs, and improve wearability and followability to the wearer's movements.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the disposable diaper according to the present invention in an unfolded state;
The figure is a partial perspective view, and Figure 3 is a partial perspective view of Figure 1.
Figure 4 is a view taken along the line IV-IV, Figure 5~
FIG. 10 is a schematic sectional view of a modified example. 1... Liquid-impermeable sheet, 2... Liquid-permeable sheet, 3...
...Absorber, 4...Stretchable elastic member for bending, 5...Top sheet, 6...Barrier sheet, 6A...First barrier sheet, 6B...Second barrier sheet, 7
A...First elastic stretchable member, 7B...Second elastic stretchable member,...Soft stool permeation opening, B...Barrier cuffs, F...Flap, P...Pocket space, -5-2 , t , -1-ノ fig fig fig fig.

Claims (1)

[Claims] (1) An absorbent body is provided on the upper surface of the liquid-impermeable sheet, a liquid-permeable sheet is placed on the upper surface of this absorbent body, and the surface of the disposable diaper is stretched by the contractile force of the elastic elastic member along the front-rear direction of the disposable diaper. In a disposable diaper having protruding barrier cuffs on both sides, the barrier cuffs include a barrier sheet and an elastic elastic member, and the elastic elastic member is a first elastic elastic member fixed to a side edge of the barrier sheet. and a second elastic elastic member fixed to the widthwise middle part of the protruding portion of the barrier sheet, the first and second elastic elastic members are fixed to the front and rear ends of the disposable diaper, and the second elastic elastic member is fixed to the front and rear ends of the disposable diaper. A disposable diaper characterized in that the first elastic stretchable member is located on the side of the paper diaper, and the second elastic stretchable member is located inside the paper diaper.