JPS6342001B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to absorbent articles, and more particularly to disposable diapers.

Various disposable diapers have been proposed for infants. Some of them have pleats. Preferably, such diapers have a strip of tape attached to secure them to the infant, eliminating the need for a separate roll of tape. The tape strip may have a sticky end with adhesive covered by a release sheet. The release sheet peels off when the diaper is applied, and the adhesive end secures the diaper to the infant.

The use of a separate release sheet for the tape strips has been found to be inconvenient since it must be removed and then discarded. Furthermore, since the infant keeps moving even when applying the diaper, it is desirable to provide the diaper with a tape that allows the diaper to be applied easily. Therefore, the adhesive end of the tape strip must be easily transferable to the diaper securing position. Furthermore, it is desirable to hold the pleats of the diaper until they unfold when the diaper is applied.

The object of the present invention is to solve the above-mentioned problems of the prior art and to provide a diaper with a tape of simple construction that is convenient for applying the diaper to an infant.

In order to achieve the above object, the disposable diaper of the present invention has the following configuration. That is, a central panel that has a front surface, a back surface, and a pair of side edges, and is bent along a vertically extending bending line and extends vertically, and a panel that is continuous on both sides of the central panel. A pair of first panels are stacked on the front surface of the center panel, and a pair of outer panels are formed, each continuous with the pair of first panels and stacked on the back surface of the first panel. , an absorbent pad assembly, and a first absorbent pad assembly each secured to the back surface of the outer panel near the opposite side edges of the absorbent pad assembly.
a pair of pressure sensitive adhesive tape pieces for securing the diaper to the wearer, the adhesive tape having adhesive portions continuous with the first portion and protruding from each side edge of the absorbent pad assembly; consisting of a first part each fixed to the back side of the panel, and a second part covering most of the adhesive coated surface of the adhesive part of the pressure sensitive adhesive tape piece folded back onto the back side of the central panel; a pair of release sheets;
A disposable diaper, wherein the adhesive portion of the pressure-sensitive adhesive tape piece adheres to the release sheet to hold the outer panel overlaid on the first panel before use of the diaper.

Therefore, one advantage of the present invention is that the adhesive portion of the pressure-sensitive adhesive tape strip (hereinafter referred to as pressure-sensitive tape strip) and the release sheet hold the outer panel in a folded state before applying the diaper. That's true.

Another advantage of the present invention is that the adhesive portion of the pressure sensitive tape strip can be easily peeled off from the release sheet when securing the diaper to the infant.

Yet another advantage of the present invention is that it eliminates the need to adhere the release sheet to the absorbent pad assembly and discard the release sheet.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1-4 depict a first embodiment of a disposable diaper according to the invention, in which a disposable diaper 20 having an absorbent pad assembly 22 is shown. The absorbent pad assembly 22 includes a fluid-impermeable backsheet 24 forming the backside 26 of the diaper, a fluid-permeable topsheet 28 forming the majority of the front surface 30 of the absorbent pad assembly 22, and a backsheet 24. and the top sheet 28. Preferably, the backsheet 24 is wider than the absorbent pad 32 and the side edges 34 of the backsheet 24 are folded back and secured to the front surface 30 of the absorbent pad assembly 22. The absorbent pad assembly 22 also includes a pair of longitudinally extending side edges 36a, 36b.
and a pair of end edges 38 connecting the side edges 36a and 36b. As shown in FIG. 1, a number of vertically extending bending lines 40a, 40b, 40c and 40d
a vertically extending central panel 42 with box pleats formed therein; a pair of first panels 44a, 44b connected to the central panel 42 and superimposed on the front surface 30 thereof; 44a, 4
4b and a pair of outer panels 46a, 46b connected thereto and superimposed thereon. outer panel 46a,
46b defines longitudinally extending side edges 36a, 36b of absorbent pad assembly 22.

The diaper 20 that has not been used yet has vertical fold lines 40a, 40b, 40c, 40 as described above.
It has the shape of a box pleat bent at d. The adhesive portions 52a, 52b of the pressure sensitive tape pieces 48a, 48b are bent at the bending lines 40b, 40c.
and is attached to the back surface 26 of the central panel 42. The release sheets 56a and 56b are the first portion 60
a, 60b to the back surface 26 of the central panel 42, and the pressure sensitive tape piece 48 is attached to the second portion 62a, 62b.
The adhesive coated surfaces 54a, 54b of the adhesive portions 52a, 52b of a, 48b are releasably covered. Therefore,
Adhesive portion 52a of pressure sensitive tape pieces 48a, 48b,
52b is held in place by release sheets 56a, 56b along with outer panels 46a, 46b. As shown in FIG. 4, when applying the diaper 20 to an infant, the second portions 62a, 62b of the release sheets 56a, 56b are peeled off from the adhesive coated surfaces 54a, 54b of the adhesive portions 52a, 52b, and the pressure-sensitive tape is The adhesive portions 52a, 52b of the strips 48a, 48b are pulled outwardly from the back surface 26 of the center panel 42 to position the diaper for securing to the infant.

As explained above, before applying the diaper of the present invention, the adhesive part of the pressure-sensitive tape piece is placed at an appropriate position to hold the pleats, and the adhesive part of the pressure-sensitive tape piece is used to hold the diaper against the infant. It can be moved to the position used for fixation. The release sheet that initially covers the adhesive portion of the pressure sensitive tape strip remains affixed to the diaper after the diaper is applied, so there is no need to discard the release sheet.

[Brief explanation of the drawing]

FIG. 1 is a partial top view of an embodiment of the disposable diaper according to the first embodiment of the present invention before it is folded into a pleat shape. FIG. 2 is a rear perspective view of the disposable diaper of FIG. 1 folded into a box pleat configuration. FIG. 3 is a partial cross-sectional view taken from - in FIG. 2.
FIG. 4 is a partial perspective view showing the pressure-sensitive tape pieces of the disposable diaper of FIGS. 1 to 3 in an unfolded state when the diaper is used. 20... Disposable diaper, 22... Absorbent pad assembly, 24... Fluid-impermeable back sheet, 28... Fluid-permeable front sheet, 42... Center panel, 44a,
44b...first panel, 46a,b...outer panel,
48a, 48b...pressure sensitive adhesive tape piece, 50a,
50b...first portion of pressure sensitive adhesive tape piece, 52
a, 52b...Adhesive portion of pressure sensitive adhesive tape piece, 5
4a, 54b...Adhesive coated surface, 56a, 56b...
Peeling sheet.

Claims (1)

[Claims] 1. Has a front surface, a back surface, and a pair of side edges, and
a vertically extending central panel that is folded along a vertically extending bending line; a pair of first panels that are continuous on both sides of the central panel and overlapped on the front surface of the central panel; , a pair of outer panels that are continuous with the pair of first panels and overlapped on the back surface of the first panel; for securing a diaper to a wearer, the diaper having first portions each affixed to a back surface of an outer panel, and adhesive portions continuous with the first portions and protruding from each side edge of the absorbent pad assembly. a pair of pressure-sensitive adhesive tape pieces, a first portion each fixed to the back surface of the center panel, and an adhesive coated surface of the adhesive portion of the pressure-sensitive adhesive tape piece folded back onto the back surface of the center panel. a pair of release sheets comprising a second portion that covers a majority of the outer panel, the adhesive portion of the pressure sensitive adhesive tape strip adhering to the release sheet to remove the outer panel from the first portion before use of the diaper; A disposable diaper that is held in a stacked state on a panel.