JPH0316139B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to disposable diapers of either rectangular or hourglass shape, and particularly to disposable diapers having effective fluid acquisition means.

In the past, diapers have typically been provided with fluid traps formed of watertight materials such as polyethylene or other non-porous sheets.

One type of fluid trap is formed from a fluid-tight support sheet material that extends beyond the upper sheet. This is sometimes disadvantageous as the support sheet material can cause discomfort and abrasions to the infant.

Other fluid barriers utilize strips of watertight material to form the diaper's binder, but this is expensive and difficult to manufacture, and watertight materials also have a better feel than normal upper sheet materials. do not have.

The use of another watertight material increases the stiffness of the diaper, making its installation more difficult if not impossible, and does not increase the absorbent capacity of the diaper in any way.

It is an object of the present invention to provide a disposable diaper with fluid acquisition means, which not only does not reduce the flexibility of the diaper and does not make it difficult to put on the diaper;
To provide a disposable diaper which is comfortable to wear and can further increase the liquid absorption capacity of the diaper.

To achieve the above object, the disposable diaper of the present invention comprises a support sheet, an absorbent pad on the support sheet, and a pad located on the absorbent pad and fixed to the support sheet along its periphery. an upper sheet, the absorbent pad having a lower layer of absorbent material and an upper layer located along and only near the lateral edges of the lower layer, the upper layer comprising a lower layer of absorbent material; It is characterized by being configured so that it is located at the top.
This configuration of the present invention can be applied to a variety of disposable diapers, whether stretchable or non-stretchable, and can be applied to diapers with special contours or simply rectangular diapers. can also be applied.

Referring to the accompanying drawings, in which like reference numerals indicate like parts throughout the various views, the reference numeral 10 generally represents the profile type shown in FIGS. 1 and 2 in accordance with the concepts of the present invention. Showing diapers.

The diaper 10 includes a support sheet 12 and an absorbent pad 1.
4 and an upper sheet 16.

Support sheet 12 is formed of a suitable watertight material such as polyethylene or other non-porous sheet.

Upper sheet 16 is preferably formed from a non-scratch material such as a non-woven sheet of polyethylene or polypropylene fibers.

The absorbent pad 14 is formed from any suitable absorbent material commonly used in the art, such as wood wool. A conventional wood wool absorbent pad is die-cut and sandwiched between an upper sheet and a support sheet.

According to the invention, the absorbent pad 14 has a lower layer 18
and a two-part upper layer 20 along opposite sides 22, 24 of the pad 14. Pad 14 is die cut into an hourglass shape and also forms regions 26 and pairs of ears 28 opposite the four corners of the diaper. It is also within the concept of the present invention to have the upper layer 20 extend beyond the ears 28 or to include the upper layer only in the diaper area. Fifth
As shown, pad 114 has die cuts 116, 118 therein that extend concentrically inwardly. Flap 120 formed in this way
is bent inward to form the upper layer.

An elastic member in the form of an elastic strip 40 is bonded to the support sheet 12 if desired, and the upper sheet is heat sealed or adhesively bonded to the support sheet along its periphery. The upper layer 20, 120 forms a fluid barrier and increases the absorbent capacity of the diaper and is compressed during use to increase barrier effectiveness.

As shown, the upper layer 20 is bent to form the lower layer 1.
Form an extension of 8. Alternatively, the upper layer can be formed separately. However, the folding of the upper layer 20 appears to add an increased barrier effect at that point.

Referring now to FIGS. 3 and 4, there is shown a tenth embodiment of the present invention for use in a rectangular diaper. An absorbent pad 214, preferably of wood wool, is sandwiched between a support sheet 212, preferably a polyethylene sheet, and an upper sheet 216 of non-woven fibers, preferably polyethylene or polypropylene. The end 219 of the support sheet 212 is connected to the upper sheet 216
It is folded upwards.

The absorbent pad 214 is attached to the lower layer 218 and the upper layer 2 along opposite edges 222 and 224 of the absorbent pad 214.
Contains 20. Upper layer 220 is preferably lower layer 2
It can be folded from 18 or placed on the lower layer from another piece.

Various embodiments of the diaper can be positioned on the infant through the use of conventional self-adhesive adhesive tabs.

[Brief explanation of drawings]

FIG. 1 is a plan view of a contour diaper according to the concept of the present invention, FIG. 2 is a sectional view taken along the plane 2-2 in FIG. 1, and FIG. 3 is a plan view of a rectangular diaper according to the present invention. , FIG. 4 is a sectional view taken along the plane 4--4 in FIG. 3, and FIG. 5 is a schematic diagram showing an embodiment of forming a two-layer absorbent pad according to the present invention. 10: Diaper, 12: Support sheet, 14: Absorbent pad, 16: Upper sheet, 18: Pad lower layer, 20: Pad upper layer, 22, 24: Pad side edge, 26: Also, 28: Ear.

Claims (1)

[Scope of Claims] 1. A support sheet comprising: a support sheet, an absorbent pad on the support sheet, and an upper sheet located above the absorbent pad and fixed to the support sheet along its periphery; a disposable diaper having a lower layer of absorbent material and an upper layer located along and only near the side edges of the lower layer, the upper layer overlying the lower layer. 2. The disposable diaper according to claim 1, wherein the absorbent pad has an hourglass shape,
The disposable diaper also forms opposing pairs of regions and outwardly extending ears, the upper layer extending at least along the also regions. 3. The disposable diaper according to claim 1, wherein the upper layer is integral with the lower layer. 4. The disposable diaper of claim 1, wherein the upper layer is integral with the lower layer and forms an extension of the lower layer folded over it. . 5. The disposable diaper according to claim 1, wherein the upper layer is separate from the lower layer. 6. The disposable diaper according to claim 1, wherein a pair of cuts are formed in the absorbent pad, the cuts being spaced apart from each other and extending inward at an angle so as to converge with each other. death,
The disposable diaper, wherein the upper layer is formed by folding a portion between the pair of cuts onto the lower layer. 7. The disposable diaper according to claim 6, wherein when the upper layer is formed by folding the portion between the pair of cuts, the cut forms the absorbent pad into an hourglass shape. Diapers. 8. The disposable diaper according to claim 2, wherein the upper layer is integral with the lower layer. 9. The disposable diaper of claim 2, wherein the upper layer is separate from the lower layer, and wherein the upper layer extends over the ears. 10. The disposable diaper of claim 8, wherein the upper layer extends over the ears.