JP2928669B2 - Sanitary napkin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary napkin for absorbing and retaining menstrual blood. More specifically, the present invention relates to a sanitary napkin that can be used as a napkin belonging to a so-called double napkin in which two napkins are vertically stacked.

[0002]

2. Description of the Related Art Conventionally, in Japanese Patent Application Laid-Open Nos. 58-36552 and 3-1346, in order to prevent so-called lateral leakage of menstrual blood due to deformation or displacement of a napkin, two napkins are stacked one above the other. A double napkin has been disclosed in which only its longitudinally opposed ends are joined to make them relatively movable.

[0003]

However, in the known double napkin, since the upper and lower two napkins have their lengthwise facing ends fixed to each other, there is little room for their relative movement, and the intended purpose is reduced. Cannot be achieved sufficiently.

[0004] The present invention is more effective than the conventional double napkin.
The main issue is how to configure the two napkins to freely move relative to each other.

The present invention for achieving the above object is based on a sanitary napkin having a napkin main body having a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-resistant back sheet.

[0006] The present invention, in the structure of the premise, before
Part of the topsheet on the top surface of the napkin
From the center of the napkin in the width direction
A sleeve is formed.
At least the napkin member having the second absorbent core is covered.
The napkin-based core and the napkin member
A part of the topsheet constituting the sleeve during
It is characterized and this <br/> which is pleats position formed by being folded.

[0007]

FIG. 1 shows a napkin main body.
The napkin main body 1 has a length in the center of the upper surface in the width direction.
A direction extending sleeve 2 is provided. Napkin main body 1
Is composed of a liquid-absorbent core 3, a liquid-permeable topsheet 4, and a liquid-resistant backsheet 5. The sleeve 2 is constituted by a part of the topsheet 4 and has a bottom portion 7 and openings 6 at both longitudinal ends of the napkin main body 1. That is, the sleeve 2 is formed by folding the central area of the topsheet 4 downward and inward at predetermined intervals in the width direction to form the bottom portion 7. A portion 8 covering the upper surface of the core 3 is formed by further folding the portion connected to the bottom portion 7 outward , and
A part of the topsheet 4 is folded inward by these parts
The pleats 2a are formed, and a portion connected to the portion 8 is folded back along the surface of the core 3 to the lower surface thereof to form a portion 9 covering the lower surface of the core 3, and the side edge 10 of the portion 9 is Both ends 11 of the topsheet 4 in the length direction of the napkin main body 1 are hot-pressed (fused) together except for the sleeve 2 except for the lower surface. The part 8 is bonded to the upper surface of the core 3 with an adhesive 14. The position of the adhesive 14 can be determined as appropriate in relation to the size of the sleeve 2, the length of the sleeve 2 with respect to the napkin main body 1, and the degree of relative movement in the width direction. In this way, the order in which the core 3 is covered with the topsheet 4 and the sleeve 2 is formed is not particularly limited, and the point is that such a structure is sufficient. Therefore, the core 3 may be covered with the topsheet 4 and folded so that the side edges 10 overlapping each other are located at the center of the sleeve 2. The back sheet 5 has both sides in the width direction folded back to the upper part on both sides of the core 3. As shown in FIG. 7, one side of the napkin main body 1 has one side of the top sheet 4 and one side of the back sheet 5 joined to each other outside the core 3. The top sheet 4 may not be positioned. An adhesive 12 for fastening to the shorts worn is applied to the lower surface of the napkin main body 1 and protected by a release sheet 13.

FIG. 2 shows an example of a napkin member to be combined with the napkin main body 1. Napkin member 2
Numeral 0 belongs to one of the typical configurations of known napkins, and includes a liquid-absorbent core 21, a liquid-resistant back sheet 22 covering the lower surface and both sides of the core 21, and a liquid-pervious material covering the whole of these. And a top sheet 23. Napkin member 20
An adhesive 24 for fixing the shorts to be worn is applied to the lower surface of the pair, and this is protected by a release sheet 25.

FIG. 3 shows an example of the combined use of the napkin main body 1 and the napkin member 20. At the time of use, the napkin member 20 with the release sheet 25 adhered is inserted into the sleeve 2 of the napkin main body 1 from one end opening thereof, the release sheet 13 is peeled from the napkin main body 1, and the napkin main body 1 is bonded with an adhesive. At 12, secure it to the crotch pad of the shorts worn. When the napkin member 20 is inserted into the sleeve 2, the size of the sleeve 2 and the napkin member 20 is configured such that an appropriate space L is formed between both side surfaces of the sleeve 2 and both side surfaces of the napkin member 20. This is preferable in that the relative movement in the length and width directions of the napkin main body 1 and the napkin member 20 is sufficiently enabled. The reason that the release sheet 25 is kept adhered to the napkin member 20 is that there is no need to peel the release sheet 25, and when the release sheet 25 is released, the napkin member 20 is placed on the sleeve 2
When inserted into the sleeve 2, the adhesive 24 is inadvertently attached to the sleeve 2, making it difficult to insert the sleeve.

FIG. 4 shows another example of using the napkin main body 1 and the napkin member 20 in combination. In this case, the release sheet 2 is removed from the napkin member 20.
5 is peeled off, and the sleeve 2 of the napkin main body 1 is
To the upper surface.

Of course, the napkin main body 1 and the napkin member 20 can be used independently.

FIG. 5 shows another napkin member. The napkin member 30 is formed to be considerably elongated compared to the napkin member 20, and is constituted by a liquid-absorbent core 31 and a liquid-permeable topsheet 32 covering the whole thereof, and extends along the length direction. A compressed groove 33 for guiding menstrual absorption is formed at the center.

FIG. 6 shows an example of the combined use of the napkin main body 1 and the napkin member 30. The sleeve 2 of the napkin body 1, grooves 33 from one end thereof opening are inserted the napkin member 30 so as to be positioned on the top surface.

As with known napkins, cores 3, 21,
31 is a single or mixture of pulverized pulp, superabsorbent polymer powder, and water-absorbing paper; fibrous nonwoven fabric or porous plastic film is used for the top sheets 4, 23, 32; A film, a water-repellent or waterproofed fiber nonwoven fabric, or a laminate of the film and the nonwoven fabric can be used.

In any of the above-mentioned modes of use, the upper surface of the sleeve 2 of the napkin main body 1 is brought into contact with the female local part. Napkin members 20, 30 via the flop Lietz 2a of the sleeve 2, specifically, that the pleats 2a spread, its
It can relatively freely move in these width directions .
Menstrual blood is preferentially absorbed by the cores 21 and 31 of the napkin members 20 and 30, and excess menstrual blood not absorbed by the cores is absorbed and held by the core 3 of the napkin main body 1.

[0016]

Effects of the Invention] According to the napkin according to the present invention, Nap
A sleeve is constructed between the kin-based core and the napkin member.
Formed by folding part of the topsheet
The napkin main body and the napkin member
Is to keep the wearer and / or napkin in the worn state
The pleats are spread by the movement of the underwear that they hold, so that the relative movement in the width direction is free. Therefore, it is less to one movement of the napkin main body and the napkin member affects the other
No, it is possible to prevent the displacement or decreased absorption or leakage of menstrual blood due to derivation of wrinkles of the napkin member as much as possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional perspective view of a napkin mainly including a napkin main body and a sleeve, which crosses a substantially central portion according to an embodiment of the present invention.

FIG. 2 is a cross-sectional perspective view of the napkin member used in combination with the napkin, substantially across the center of the napkin member.

FIG. 3 is a cross-sectional view in which the napkin member is inserted into the napkin-based sleeve.

FIG. 4 is a cross-sectional view in which the napkin member is joined to the upper surface of the napkin-based sleeve.

FIG. 5 is a cross-sectional perspective view crossing substantially the center of another napkin member used in combination with the napkin.

FIG. 6 is a cross-sectional view in which the napkin member shown in FIG. 5 is inserted into the napkin-based sleeve.

FIG. 7 is a sectional view showing another embodiment of the side portion mainly composed of the napkin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Napkin main body 2 Sleeve 2a Pleat 3 Core 4 Top sheet 5 Back sheet

Claims (1)

(57) [Claims] 1. A sanitary napkin having a napkin main body having a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-resistant back sheet, wherein a part of the top sheet on the upper surface mainly of the napkin is provided.
From the center of the napkin in the width direction to its length
An elongate sleeve is configured, said sleeve
At least the napkin member having the second absorbent core is covered.
The napkin-based core and the napkin member
A part of the topsheet constituting the sleeve during
The napkin, wherein pleats formed by folding the napkin are located .