JPS6240579Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an absorbent body for sanitary napkins.

Conventional absorbers of this kind have a rectangular shape with a uniform thickness and width throughout, and as a result, they have the disadvantage of not being effective in preventing side leakage, and also having difficulty making contact with the fabric in local areas, resulting in side slippage. It was hot.

The purpose of this invention is to provide an absorbent body which eliminates the drawbacks of the conventional absorbent body, has excellent side-slip prevention properties, and is also capable of making local contact with the structure.

In order to achieve the above-mentioned object, this invention forms a recess thinner than the thickness of the main body in the longitudinal direction of the rectangular main body along both sides of the middle part over an appropriate length, and The device is characterized in that a flap with approximately the same thickness as the recess is provided outwardly and a narrow raised portion with approximately the same thickness as the main body is formed between both the recesses.

An embodiment of this invention shown in the drawings will be described. This absorbent material is usually used as an absorbent material, such as a laminated tissue paper, cotton pulp, or a polymer sheet alone or a combination of several of these materials, or a mixture of tissue paper, cotton pulp, and polymer. It is made up of layers of materials.

A indicates the absorber according to this invention, and the first and second
In the figure, reference numeral 1 is a rectangular main body, which extends an appropriate length along both side edges 2 and 3 at the middle part of both side edges 2 and 3, and extends inward to approximately 1/2 the thickness of the main body.
recesses 4 and 5 having a thickness of A narrow raised portion 8 having approximately the same thickness is formed.

One method for obtaining the above will be described with reference to FIG.

Folds 9 and 10 are formed on the inside of both edges along the longitudinal direction of the main body 1, and trapezoidal cuts 11 and 11 are formed symmetrically with each other, with part of the folds 9 and 10 serving as the base.
12 are provided. Then, when folding back the outer part from folds 9 and 10 and cuts 11 and 12 along folds 9 and 10, all the outside parts are folded back except for flaps 6 and 7, and the part that hits flaps 6 and 7 is folded back. The recesses 4 and 5 are formed, and a narrow protrusion 8 is also formed between the recesses 4 and 5. This is just one example, and it goes without saying that other methods may be used. Therefore, the thickness, shape, etc. of the flaps 4 and 5 may be different from those described above. There is.

As shown in Figure 4, the above-mentioned absorbent material A, like many sanitary napkins, is made of a top sheet made of a water-permeable nonwoven fabric, etc. with a leak-proof sheet B made of PE laminated paper facing down. It is covered with C and becomes a sanitary napkin.

However, a sanitary napkin with a particularly preferable structure using the above-mentioned absorbent material A is as shown in FIG. The leak-proof sheet B is omitted by laminating a water-impermeable film D consisting of the following, a cotton layer E is provided on the surface, and a tape F consisting of release paper and adhesive is provided on the back surface.

In the above case, the absorbent body A may have the protruding portion 8 facing upward as shown in FIGS. 7 to 9, or downward as shown in FIGS. It may be inserted between the main body 1 and the raised portion 8 as shown, or it may be placed under the main body 1 as shown in FIGS. 8 and 10.

As for absorber A as mentioned above, as a result of trial use, the length of flaps 6 and 7 is 50 to 100 mm, and the width is 10 to 30 mm.
In addition to the shape shown in the diagram, it is recommended that
It has been found that it may be arched or the long side edges may be concave.

This invention, as mentioned above, has flaps that protrude from both sides of the main body, which prevents side leakage.Furthermore, this flap, along with a continuous recess, is thinner than the main body, which prevents foreign objects from entering the main body during use. Since the protrusion that contacts the local area in the middle of the recess has a narrow width, the contact is firm and produces excellent effects such as no lateral slippage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is a sectional view taken along the line - of Fig. 1, and Fig. 3 is a
FIGS. 4 and 5 are perspective views showing one manufacturing process of the above, and FIGS.
9 are front views showing different states of the absorbent body according to this invention before it becomes a sanitary napkin. A... Absorber, 1... Main body, 2, 3... Side edges,
4, 5...concavity, 6,7...flap, 8...protrusion.

Claims (1)

[Scope of utility model registration request] In the longitudinal direction of the rectangular body, along both sides of the middle part, a recess is formed inward for an appropriate length and is thinner than the thickness of the main body, and a flap approximately the same thickness as this recess is formed outward. 1. An absorbent body for a sanitary napkin, characterized in that a narrow protruding portion having approximately the same thickness as the main body is formed between the two recessed portions.