JP2591175Y2 - Body fluid absorbent articles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body fluid absorbent article such as a sanitary napkin, urine absorbent pad, disposable diaper and the like.

[0002]

2. Description of the Related Art This invention is directed to a body fluid absorbent article having a flap for preventing a body fluid from leaking sideways and having an absorbent core in the flap. Japanese Patent Application Laid-Open No. 62-250201, which is one of the prior arts in this field, discloses a disposable diaper comprising a topsheet, a backsheet, and an absorbent core by bending the entire structure in the surface direction. A technique is disclosed in which a flap in which an absorbent core is interposed between back sheets is formed, and the flap forms a pocket with the diaper body.

[0003]

In the above-mentioned prior art, the absorbent core of the flap is nothing less than a portion of the absorbent core of the diaper body which is bent on both left and right sides toward the surface.
By the way, the absorbent core of the diaper body is made relatively thick to absorb all of the excreted body fluid, while the absorbent core of the flap stops the flow when the body fluid flows in the lateral direction, and It absorbs it and prevents lateral leakage, and it may be preferable to make it moderately thin. For example, by making such a thin, the flap made of a thick absorber will not be stiff at the crotch and hinder the feeling of wearing, and if an elastic member is attached, the flap can be easily expanded and contracted There are many advantages, such as being able to be made. However, the publication does not teach anything about making the flap absorbent core thinner than that of the body.

Accordingly, the present invention provides an absorbent article such as a disposable diaper in which the absorbent core of the main body is formed in a laminated structure, at least one of which is wider than that of the remaining layers, and the wide portion thereof is formed. The purpose of the present invention is to provide a body fluid absorbent article that can easily make the absorbent core of the flap thin as required while making the absorbent core of the article body thick by using the absorbent core of the flap as .

[0005]

Means for solving the above problems The present invention is as follows to solve the above problems.

In this invention, a main body having an absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and a longitudinal direction extending on both left and right sides of the main body.
Side flap and barrier flap adjacent to the side flap
A body fluid absorbent article including a wrap is assumed.

[0007] On this premise, this invention is characterized in that the absorbent core has a laminated structure, at least one of which is wide from the left and right side edges of the remaining layers.
Having an extending portion , and a front surface and a back surface of each of the extending portions.
Is covered by the top sheet and the back sheet, respectively.
The front and back sheet extending from a side edge of the extension portion.
Fold back to the back sheet side of the extension part and
A back surface of the turned portion and the extended portion facing each other;
Gluing the barrier flaps upward
And further extending from the barrier flap
Adhere the front and back sheets to each other to form the side flap
The barrier flap to either inside or outside
It lays down and glues both ends in the longitudinal direction to the topsheet.
To keep the barrier flap uplifted.
It is in a point.

[0008]

In the body fluid absorbent article constructed as described above, since the absorbent core of the article body has a laminated structure, at least one of which has a wide width and a portion extending from the remaining layers. When the extending portion is covered with the front and back sheets, the absorbent core becomes a flap whose thickness is smaller than that of the main body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the body fluid absorbent article according to the present invention will be described below with reference to the accompanying drawings, taking a urine absorption pad as an example.

FIG. 1 is a perspective view of a urine absorbing pad 1. FIG. The pad 1 is used by being applied to, for example, the inside of a crotch part of a diaper cover, and is formed to be elongated in the front-rear direction. The pad 1 is provided on a main body 5 including a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, an absorbent core 4 interposed between the two sheets 2, 3, and on a front side of the main body 5.
A barrier flap 10 extending in the longitudinal direction on both sides thereof and having a longitudinal central portion having an upright orientation with respect to the main body 5.
And side flaps 11 extending horizontally from the base end of the barrier flap 10 to the left and right sides of the main body 5. The front and back sheets 2 and 3 are joined by a continuous joining line (not shown) on the entire periphery of the absorbent core 4, and portions opposing each other are appropriately indirectly joined. The barrier flap 10 and the side flap 11 have elastic members 12 and 21, respectively, which are attached under extension.

FIG. 2 is a partial perspective view showing a cross section taken along line XX of FIG. 1, and the line XX is located at the center of the pad 1. The absorbent core 4 of the main body 5 is a laminate including a lower core 4a and an upper core 4b. However, upper core 4
b is wider than the lower core 4a and extends to the left and right.
The extension portion 13 is bent toward the front surface side of the main body 5 and forms the barrier flap 10 together with the front and back sheets 2 and 3 covering the front surface 14 and the back surface 15. The elastic member 12 is adhered to the inside of the topsheet 2 along the top of the extension 13. The rear surface 15 side of the extending portion 13, the table
The back sheet 3 is folded back together with the face sheet 2, and the back sheets 3 are intermittently adhered to each other by the adhesive 18. The front and back sheets 2, 3 have their side edges integrally bonded to form a side flap 11, and an elastic member 21 is adhered between the sheets 2, 3 at least at the crotch. The barrier flap 10 is folded down inward.
Adhesively fixed to the top sheet 2 at both ends 10A in the longitudinal direction,
As a result, the barrier flap 10 is raised upward.
Is maintained.

FIG. 3 is a partial perspective view showing a cross section taken along the line YY of FIG. 1, and the line YY is located near the edge of the main body 5. Here, the absorbent core 4 is composed of only the lower core 4a, and the upper core 4b does not exist.
Is thinner. Barrier flap 10 may not include absorbent core 4 at all and may not include elastic member 12. The barrier flap 10 is laid down on the inside of the main body and adhered to the main body 5 by an adhesive 20.

FIG. 4 is a sectional view of the pad 1 taken along line ZZ. In the absorbent core 4 in a laminated state, the lower core 4
a is long and extends to the vicinity of both edges of the main body 5, while the upper core 4b is short and exists only in the central portion. The front and back sheets 2 and 3 are adhered to each other at both end edges.

[0014] Figure 5 is a cross-sectional view similar to FIG. 2, Ba
The case where both ends of the rear flap 10 are lying down outside the pad 1 is shown. The top of the barrier flap 10 is
Facing outside. The barrier flap 10 is
10A in the longitudinal direction with its outer side lying down.
Adhesively fixed to the face sheet 2, whereby the barrier
The raised state of the pump 10 is maintained.

FIG. 6 is a plan view illustrating the configuration of the absorbent core 4 by (A) and (B). The absorbent core 4 shown in FIG. 1A is used in the embodiment shown in FIGS. 1 to 5. The laminated upper core 4b is shorter and wider than the lower core 4a, and has extended portions 13 on the left and right. (B) The absorbent core 4 is formed so that the lower core 4a and the upper core 4b have the same length in the main body 5. The absorbent core 4 can have a multilayer structure of three or more layers, and each layer can have an appropriate thickness.

As described above, in the body fluid absorbent article 1, the absorbent core 4 has a laminated structure in which each layer has a required size, so that a predetermined portion can have a required thickness. In addition, by providing the left and right extending portions 13 in at least one layer of laminated, by covering the front and rear surfaces 14, 15 at the top- and backsheets 2, 3, the barrier flag <br/>-up of required thickness You can make 10. Barrier flap 10
Has an elastic member 12 at the top, but when it is the embodiment of FIG.
The barrier flap 10 rises from the surface of the main body 5 and
The pocket 30 is opened inwardly (see FIG. 2) so that laterally flowing bodily fluids can be received and absorbed therein. When the barrier flap 10 is in the mode shown in FIG. 5, the pocket 30 is not formed, but also moves in the direction in which it rises relative to the main body 5, and the top of the barrier flap 10 contacts the wearer's crotch and the side of body fluid. Prevent leaks.

In the present invention, the absorbent core 4 may be formed by using a molded product of ground pulp or a mixture of ground pulp and a superabsorbent polymer. A plastic sheet can be used, and a plastic sheet such as polyethylene can be used for the back sheet 3.

[0018] In FIG. 1 to 5, for the barrier flag <br/>-up 10 is to clarify that it has a standing propensity with respect to the body 5, the absorbent article 1 is slightly shrunk in the longitudinal direction It is drawn in a state.

[0019]

The body fluid absorbent article according to the present invention has an absorbent core having a laminated structure, at least one of which has a portion extending from the side edge of the remaining layer,
Because was barrier off <br/> wrap by covering the extended portion in the top- and backsheets, it is easy to each separately required thickness of the absorbent core in a body and the barrier flaps of the article.

[Brief description of the drawings]

FIG. 1 is a perspective view of a urine absorbing pad.

FIG. 2 is a partial perspective view showing a cross section taken along line XX of FIG.

FIG. 3 is a partial perspective view showing a sectional view taken along line YY of FIG. 1;

FIG. 4 is a sectional view taken along line ZZ in FIG. 1;

FIG. 5 is a partial perspective view showing a cross section of a urine absorbing pad in a mode different from that of FIG. 1;

FIG. 6 is a plan view of an absorbent core showing a different configuration between (A) and (B).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body fluid absorbent article (urine absorption pad) 2 Top sheet 3 Back sheet 4, 4a, 4b Absorbent core 10 Barrier flap 11 Side flap 12 Elastic member 13 Extension part 14 Surface 15 Back surface 21 Elastic member

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body having an absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, side flaps extending in the longitudinal direction on both left and right sides of the main body, and the main body.
In the body fluid absorbent article comprising a barrier flap adjacent Idofurappu, the absorbent core is a layered structure, has an extending portion from the left and right side edges of the at least one layer widely remaining layers of which the extension The front and back surfaces of each of the projecting portions are
Cover and the back sheet, respectively,
The front and back sheet extending from the side edge of the projection portion is extended
Fold back to the back sheet side of this part, and
By gluing the back sheets facing each other in the extending portion
Forming an upwardly raised barrier flap;
The front and back sheets extending from the barrier flap
Are adhered to each other to form the side flaps,
The barrier flap is laid down either inside or outside
By adhesively fixing both ends in the length direction to the topsheet
The article characterized in that the barrier flap is kept uplifted .