JPH03133452A - Paper diaper - Google Patents

Abstract

PURPOSE:To improve wearing intervals and to surely prevent cross leakage by fixing an internal extension part extending from the top end of the flap part in a base part to the central side of the diaper to the constituting part on the front side of the diaper via a holding member. CONSTITUTION:A liquid permeable sheet 5 consisting of a nonwoven fabric or the like is disposed across the projecting sections of hydrophobic barrier sheets 6, 6 and the part of this surface sheet 5 rising from the liquid permeable sheet 2 constitutes a holding member. Since both side parts of the surface sheet 5 part from the front surface of the liquid permeable sheet 2, a pocket space P for housing soft excreta is constituted in a wearing state. The joining parts of the outer side part of this surface sheet 5 and the inner extension of the barrier sheet 6 are fixed by a hot melt adhesive agent or the like in such a manner that the extremely small width part on the front surface in the outer side part of the surface sheet 5 and the extremely small width part on the lower surface side in the projecting part of the barrier sheet 6 overlap on each other and, therefore) the surface sheet 5 and the barrier sheet 6 constitute a sheet which is apparently continuous. The contact band 6b of the front surface thereof comes always in tight contact in parallel with the skin for wearing.

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, various 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. Since these barrier cuffs are so important that they determine the quality of the disposable diaper itself, a number of innovative barrier cuffs have been proposed.

For example, in Japanese Utility Model Application Publication No. 62-153311, a pocket is formed along the inner edge by rising barrier cuffs provided on both sides of a paper diaper in the lateral direction, and excrement is dammed there to prevent side leakage. A method to prevent this is disclosed.

However, in the above method, although the pockets formed by the barrier cuffs can block loose stools, the blocked stools come into direct contact with the skin.
I was having swollen stools.

Therefore, in order to solve the problem of fecal rash, the present applicant previously proposed in Japanese Patent Application No. 63-218026 that a top sheet having elasticity and permeable to soft feces was provided in the central part of the private parts. , is connected to the barrier sheet on both sides, and the barrier cuffs are raised by the elastic force of the elastic member attached thereto to create a dam, which prevents the leakage of loose stool from the side and prevents the permeation of loose stool through the top sheet in the center. We proposed a product that would prevent the wearer's skin from coming into direct contact with loose stools.

Furthermore, as shown in FIG. 9, the shape of the barrier cuff B is such that the base flap 6a of the barrier sheet 6 and the contact band 6b form a T-shape when worn (however, they do not need to be perpendicular to each other). ) and in which the hit strip 6b is structured in the horizontal direction of the letter T was also proposed earlier. If the wearer puts on the disposable diaper in this state, the contact band 6b will be in close contact with the skin at the base of the foot, so the pressure force of the contact band on the skin will be dispersed, which may cause damage to the skin. This reduces the contact area with the skin and increases the area of contact with the skin, making it possible to more reliably prevent side leakage.

[Problems to be Solved by the Invention] However, in both the inventions described in the above-mentioned Utility Model Application No. 153311/1983 and Japanese Patent Application No. 63-218026, the barrier cuff portion is devised, and the inner edge of the barrier cuff is A pocket is formed along the barrier-cuff, and the pocket opening is closed with a permeable sheet to prevent the wearer's skin from coming into direct contact with loose stool.Furthermore, the contact band at the tip of the barrier-cuff is made wider. , which aims to improve the feeling of wearing the cuff and prevent side leakage, but all of these effects are achieved when the contact strip at the tip of the barrier cuff is in good contact with the wearer's skin. It is.

However, if the structure of the barrier cuff B is as shown in FIG.
As shown in the figure, it can be kept horizontally (parallel to the wearer's skin), but if the wearer wears it in a hurry and in a messy manner, the hit band 6b may curl up, as shown by the imaginary line in Figure 9. In this case, loose stool may leak from the side, and the inner edge of the contact band 6b may come into linear contact with the wearer's skin, causing damage to the wearer's skin.

Therefore, the main purpose of the present invention is to ensure that the contact band at the tip of the barrier cuff of a paper diaper always remains in close contact with the wearer's skin in a parallel state, thereby improving the wearing sensation and reliably preventing side leakage. Our goal is to provide the best disposable diapers possible.

[Means to solve the problem]

The above problem is solved by providing an absorbent body on the upper surface of a liquid-impermeable sheet, arranging a liquid-permeable sheet on the upper surface of this absorbent body, and further having elastic stretchability that protrudes toward the surface side of the disposable diaper along the front-rear direction. In a disposable diaper having barrier cuffs on both sides, the distal end of the barrier cuff has an inwardly extending portion that extends from the distal end of the base flap toward the center of the diaper, and this inwardly extending portion extends from the inner side of the diaper. This problem is solved by fixing the barrier cuff to the inner surface of the barrier cuff or the outer surface side component of the diaper via a holding member to maintain the extended state.

[Effect]

In the present invention, when an inwardly extending portion extending from the tip of the base flap portion toward the center of the diaper is formed at the distal end of the barrier cuff, this inwardly extending portion is maintained in its inwardly extending state. Preferably, it is fixed to the inner surface of the barrier cuff or to a component on the surface side of the diaper via a holding member. Therefore, since the structure is such that both ends of the inwardly extending portion of the hit band are supported by the base flap of the barrier cuff and the holding member, the hit band portion of the barrier cuff does not roll up, and the wearer's skin is always exposed to the wearer's skin. Since it is in good contact with the belt, the feeling of wearing it can be improved, and at the same time, since the entire width of the belt is in close contact evenly, side leakage can be reliably prevented.

〔Example〕

Hereinafter, the present invention will be further explained in detail with reference to embodiments shown in the drawings.

(Example 1) 1 to 7 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 1 made of polyethylene or the like and a liquid-permeable sheet 2 made of a nonwoven fabric or the like whose width is narrower than that of the liquid-impermeable sheet 1. , an absorbent body 3 having a certain degree of rigidity, for example in the shape of an hourglass, 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 barrier sheet 6.6 constituting this extends to the side edge of the liquid-impermeable sheet 1, and only the outer side is free. It is fixed to the liquid-permeable sheet 1 with a hot melt adhesive, and the inner side thereof is not fixed to the liquid-permeable sheet 2.

Furthermore, as shown in FIG. 6, the barrier sheet 6 is configured to form a double folded portion, that is, a contact band 6b, at the tip end, and the contact band 6b includes at least one folded part in the embodiment. An elastic stretchable member 7.7.7 consisting of three rubber threads or the like is fixed with hot melt adhesive. It is preferable that the elastic elastic members 7.7.7 have the same contraction and restoring force (stretching force). If they are the same, the contact band 6b is pulled uniformly in the longitudinal direction with respect to its axial direction, so that the contact surface becomes a substantially horizontal surface. Therefore, since it is in close contact with the wearer's skin with uniform pressure throughout, there is less damage to the skin, and the contact area is increased, which improves the effect of preventing slippage. Furthermore, when the contact band 6b is brought into contact with the skin as a whole with a wide width at all times, leakage prevention is also ensured. When the barrier sheet 6 is hydrophobic, side leakage of urine and soft stool liquid can be further prevented. However, barrier sheet 6
Even if the material 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.

On the other hand, a liquid-permeable surface sheet 5 made of nonwoven fabric or the like is placed across the protruding portion of the hydrophobic barrier sheet 6.6. This top sheet 5 is fixed to the liquid-permeable sheet 2 at the center in the width direction, excluding both sides thereof, with a hot melt adhesive or the like.

As a result, both sides of the topsheet 5 are spaced apart from the top surface of the liquid-permeable sheet 2, so that a pocket space P for absorbing soft stool is formed as shown in FIG. 5 in the worn state.

As shown in FIG. 6, the bonded state of the outer side of the top sheet 5 and the inward extension of the barrier sheet 6 is as shown in FIG. It is fixed using hot melt adhesive or the like so that the extremely small width portion on the lower surface side overlaps with the lower surface side. Therefore, the top sheet 5 and the barrier sheet 6 become as if they were one continuous sheet, and the hit band 6b is placed on the top surface of the top sheet, so that the wearer can wear the top sheet 5 and the barrier sheet 6 with the hit band rolled up. The wearer's skin is always parallel to the wearer's skin.

Looking at this point from another point of view, as shown in FIG. 5, a trapezoid is formed with the liquid-permeable sheet 2 as the bottom, the barrier sheet 6 and top sheet 5 as the oblique side, and the contact strip 6b as the top. The hit band 6b will always be horizontal.

In the above example, the rising portion of the top sheet 5 from the liquid-permeable sheet 2 constitutes the holding member according to the present invention.

As a joining example other than the above-mentioned embodiment, as shown in FIG.
A possible method is to fix it with hot melt adhesive or the like so that it has approximately the same width as the contact band 6b and overlaps the lower side thereof. In this case, in order to reduce the number of adhesive parts as much as possible and improve the texture, it is preferable to use three adhesive parts: the tip of the top sheet 5 and the tip of the barrier sheet 6 as shown in the figure. good.

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.

On the other hand, both longitudinal ends of the barrier sheet 6.6 are
During use, the entire width of the barrier cuffs B is glued with a hot melt adhesive or the like to prevent the entire length of the barrier cuffs B from warping outward.
and is fixed to the liquid-impermeable sheet 1. A fastening tape 9 is provided at both upper ends of the barrier sheet 6.6.

The liquid-permeable sheet 2 is arranged to have the width of the cotton absorbent body 3. This liquid-permeable sheet 2 mainly has the function of diffusing urine. In addition, the surfaces of both sides of this liquid-permeable sheet 2,
A liquid-impermeable band 11 made of polyethylene or the like extends in the longitudinal direction with a width extending from the joint to the inner side of the liquid-impermeable sheet 1. Between the liquid-impermeable band 11 and the liquid-impermeable sheet 1, one or a plurality of bending and deforming elastic members 4.4 made of rubber thread or the like are hot-melt bonded. It is interposed while being fixed by the agent. 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. .

(Example 2) A second example of the present invention will be explained in detail based on FIG. 8.

In the first embodiment described above, a liquid-permeable top sheet 5 is separately provided on the upper surface of the liquid-permeable sheet 2, and the outer side of this top sheet 5 and the protruding portion of the barrier sheet 6 are joined, so that the surface Although the sheet 5 and the barrier sheet 6 were configured to form one continuous sheet, in the case of the second embodiment, the inwardly extending portion was not used, and the inwardly extending portion was It is held so that it extends horizontally.

As in the first embodiment, the barrier sheet 6 is configured to form a double folded portion, ie, a contact band 6b, at the leading end. To prevent this hit band 6b from being rolled up when worn, the tip portion of the hit band 6b and the base flap portion 6a are
The crutch band 12 according to the present invention is fixed at both ends with hot melt adhesive. Although the cradles 12 are provided continuously in the longitudinal direction of the paper diaper, they may be provided in plural numbers at predetermined intervals.

(Example 3) Figure 1Q shows the third example, which is different from the first and second examples above. The overlapping portions are integrated with material H, and each elastic elastic member 7 is wrapped in the overlapping portion. Then, the right side with the hot melt adhesive H as a boundary is configured as an inwardly extending portion according to the present invention, and the end of the top sheet 5 is fixed to this inwardly extending portion with a hot melt adhesive or the like, The topsheet 5 is configured as a holding member according to the present invention.

With this configuration as well, the entire width of the hit band 6b can be maintained horizontally.

〔Effect of the invention〕

As described above, according to the present invention, the following effects can be achieved.

Because the barrier cuff band is fixed via a holding member such as a top sheet or a support band, it is not worn on the wearer in a rolled-up state and is always parallel to the wearer's skin. Since the barrier cuffs are in close contact with each other, the wearing feeling can be improved, and at the same time, since the entire width of the barrier cuffs is in close contact with each other, side leakage can be reliably prevented.

[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 from the same line arrows, Figure 5 is a view from the same line.
V-line arrow view, Figure 6 is a detailed sectional view of the barrier cuff section,
FIG. 7 is a detailed cross-sectional view showing another modification of the barrier cuff part, FIG. 8 is a view of a second embodiment of the disposable diaper according to the present invention, and FIG. 9 is a cross-sectional view of essential parts of an already proposed example of the barrier cuff link. 10th
The figure is a sectional view of a main part of a third embodiment of the present invention. ■...Liquid-impermeable sheet, 2...Liquid-permeable sheet 3...
・Absorber, 4...Stretchable elastic member for bending 5...Top sheet, 6...Barrier sheet 6a--Base flap, 6b...Block band 7...Elastic stretchable member, B...・Barrier cuffs F...Flap, P...Pocket space Figure 6 Figure 0

Claims (1)

[Claims] (1) An absorbent body is provided on the upper surface of a liquid-impermeable sheet, a liquid-permeable sheet is arranged on the upper surface of this absorbent body, and a barrier cuff has elastic stretchability that protrudes toward the surface side of the disposable diaper along the front-rear direction. In a disposable diaper, the barrier cuffs have an inwardly extending portion extending from the tip of the base flap toward the center of the diaper at the distal end of the barrier cuff, and the inwardly extending portion is A paper diaper characterized in that the diaper is fixed to the inner surface of the barrier cuffs or the surface side component of the diaper via a holding member in order to maintain its condition.