JPH0211066Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sanitary napkin, and more specifically, to a sanitary napkin that is highly effective in preventing side leakage of menstrual blood and is comfortable to use.

[Conventional technology]

As a conventionally known sanitary napkin, as shown in FIG.
At the same time, by covering the lower surface and both side surfaces of the absorbent body 1 with a water-impermeable sheet 3, and joining the folded parts 2a and 3a of both sheets 2 and 3 to each other, the upper surface side end of the absorbent body 1 is There is one in which flaps 4, 4 are formed (for example, see Japanese Utility Model Application No. 18520/1983).

The sanitary napkin having such a structure is designed so that menstrual blood flowing laterally on the upper surface of the absorbent body 1 is received by the flaps 4, and has a certain effect in terms of preventing side leakage. .

However, the water-impermeable sheet 3 that covers the absorbent body 1 is usually made of paper laminated with polyethylene, and when the napkin is used, the water-impermeable sheet 3 is applied directly to the skin at the flap 4. Because it comes into contact with the skin, it causes a stiff and uncomfortable feeling, and there are problems with flatness and texture.

Further, when the absorbent body 1 receives a large amount of menstrual blood at once, it is difficult to absorb it instantly, and a part of it is diffused on the upper surface of the absorbent body 1 without being absorbed. At this time, the material that spreads on the upper surface of the absorbent body 1 in the length direction of the napkin is successively absorbed into the absorbent material 1 along the way, but the material that spreads in the horizontal direction is absorbed by the flap 4. The flap 4 is caught and collected on the long side of the napkin.
It can easily turn over and cause side leakage, or remain unabsorbed for a long time, causing stickiness.

[Problem that the invention attempts to solve]

The objective of this invention is to provide a type of sanitary napkin that has a flap part on the upper side edge, so that it feels better on the skin when worn, improves the fit and feeling of use, and also eliminates twisting and peeling of the flap part. The objective is to improve the side leakage prevention effect.

[Means for solving problems]

In order to solve the above problems, the sanitary napkin of the present invention has an absorbent body made of an absorbent material covered with a liquid-permeable inner covering material, and the outer surface of which is covered with a liquid-permeable outer covering material. A leak-preventing material is applied from the bottom surface to the side and top side edges of the absorbent body, and the ends of the liquid-permeable outer covering material are folded back along the edges of the leak-preventing material to prevent leakage prevention with the outer covering material. While forming a flap portion containing the leakage material, the end portion of the folded outer covering material is sandwiched between the leakage prevention material and the liquid permeable inner covering material and rolled together with the inner covering material on the lower surface side of the absorbent body, The liquid-permeable outer covering material and the inner covering material are point-bonded to each other at a plurality of points at the tip of a flap portion formed at the upper end of the absorber.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIG. 1 and FIG. After mixing one or more types of absorbent materials such as polymers as necessary,
Laminated to show the required menstrual blood absorption capacity.
When absorbent paper is used as the absorbent material, it is preferable that the napkin has crepe-like wrinkles along its length.

The absorber 10 is surrounded by a liquid-permeable inner sheathing material 11, and on the outside of the inner sheathing material 11, a leak-proofing material whose outer surface is covered with a liquid-permeable outer sheathing material 12 is provided. A material 13 is attached to the absorber 10 from the lower surface to the side surface and the upper surface side end, and the liquid permeable outer covering material 1
The end portion 12a of the absorber 10 is connected to a leakage preventive material 13 that constitutes the flap portions 14, 14 at the upper surface side end portion of the absorber 10.
It is folded back along its edge so as to wrap around the end portion 13a of the material, and is inserted between the leakage preventive material 13 and the liquid-permeable inner covering material 11, and is rolled up on the lower surface side of the absorbent body 10. The outer covering material 12 and the inner covering material 11 are bonded to each other at a plurality of bonding points 15 provided at the tips of the flap portions 14, 14.

As the liquid-permeable inner material 11 and outer material 12, any material can be used as long as it has sufficient pores to allow menstrual blood to pass through. Examples of materials include rayon paper, nonwoven fabric, etc. It will be done. Among these, nonwoven fabrics are manufactured by a wet method or a dry method using fibers selected from natural fibers such as rayon and wood pulp, and synthetic fibers such as polypropylene and wood pulp.

Further, as the material constituting the leakage preventer 13, usually a laminated paper made by laminating a polyethylene film or other synthetic resin film onto waterproof paper is used, but the synthetic resin film itself may also be used.

The shape of the absorbent body 10 is not limited to a rectangle, but may be any shape, such as an oblong shape or a shape with a constricted middle portion as shown in FIG. 3. That is, FIG. 3 shows a case where an absorber 10 having a constricted part 10a in the middle part is used, and in this embodiment,
The liquid-permeable inner covering material 11, the outer covering material 12, the leakage prevention material 13, and other covering materials surrounding the absorbent body 10 are applied not only to the front side A and the rear side B of the napkin, but also to the above-mentioned fins on the side C. Also inside 10a, each is sealed by a seal portion 16.

In the sanitary napkin having the above structure, since the outer surface of the leak-proof material 13 is covered with the liquid-permeable outer covering material 11, the leak-proof material 13 may cause a stiff and uncomfortable feeling when it comes into direct contact with the skin, especially at the flap part. No. 14 has almost no discomfort, feels good on the skin when worn, has a high fit, and is very comfortable to use.

Furthermore, when the sanitary napkin is used, menstrual blood that flows laterally on the upper surface of the absorbent body 10 is removed from the absorbent body 10.
It is received by the flap parts 14, 14 at the side edges of the 0, and is absorbed into the absorbent body 10 through the liquid-permeable inner material 11, and a part of it is absorbed into the absorbent body 10 through the liquid-permeable inner material 11 and the liquid-permeable inner material 11. It is quickly guided to the lower part of the absorbent body 10 by the portion of the outer covering material 12 located inside the leakage preventive material 13, and is also absorbed from the side and bottom surfaces of the absorbent body 10. Therefore, the absorber 10
The absorption of menstrual blood is carried out efficiently over a wide area, which prevents menstrual blood from remaining on the side edges of the napkin, giving it a sticky feel, or from not being absorbed and causing side leakage. do not have. The absorption effect at this time can be further enhanced by disposing a water-absorbing polymer on the lower surface side of the absorber 10.

Further, at the side edge of the napkin, a large amount of the absorbent material 10 is covered by the inner covering material 11 and the outer covering material 12 which is folded back in double layers with the leakage preventive material 13 sandwiched in between. Since the covering material 11 and the outer covering material 12 are adhered to each other at the tip of the flap part 14, it is difficult for the napkin to twist or turn up the flap part 14 when it receives a large amount of menstrual blood at once. This greatly improves the side leakage prevention effect.

[Effect of idea]

According to the sanitary napkin of the present invention having the above configuration, the following unique effects can be expected.

(a) Since the liquid-permeable outer covering material covers the outer surface of the leak-proof material and wraps around the edges of the leak-proof material, a stiff and uncomfortable feeling may occur when the leak-proof material comes into direct contact with the skin, and sometimes the flap part The sense of strangeness in
This can be reliably eliminated regardless of the shape of the flap or the state of deformation during use, thereby making it possible to significantly improve the fit and feel when worn.

(b) By folding back the liquid-permeable outer covering material along the edge of the leak-preventing material, the outer covering material forms a flap portion containing the leak-preventing material, and the folded outer covering material also serves as a barrier. Since it is sandwiched inside the leakage material and rolled into the lower surface of the absorbent body together with the liquid-permeable inner covering material, menstrual blood flowing in the horizontal direction of the napkin passes through the flap part and oozes out to the outer surface. It is possible to securely catch the absorbent body without causing any damage and quickly guide it to the lower surface side of the absorbent body through the rolled-up portion between the outer cover material and the inner cover material. To not only be able to absorb menstrual blood well, but also to surely prevent inconveniences such as menstrual blood staying inside the flap part and becoming sticky due to delayed absorption, or penetrating the flap part and oozing out to the outside surface thereof. I can do it.

Moreover, since the liquid-permeable outer covering material and the inner covering material are bonded to each other at multiple points at the tip of the flap, the flap can be properly raised when the napkin is used, and
This facilitates the flow of menstrual blood toward the inner depths of the flap, thereby making it possible to reliably guide the menstrual blood to the inner depths of the flap.

(c) The absorbent body is coated multiple times with an inner covering material and an outer covering material which is folded back twice with a leakage prevention material in between, and these inner covering materials and outer covering materials are mutually bonded at the flap part. Because it is adhesive, it is possible to reliably prevent the napkin from twisting or turning up the flap when it receives a large amount of menstrual blood at once. Due to the synergistic effect, the side leakage prevention effect can be further improved.

[Brief explanation of the drawing]

Fig. 1 is an external view of one embodiment of the sanitary napkin of the present invention, Fig. 2 is an enlarged cross-sectional view thereof, Fig. 3 is a plan view of another embodiment of the present invention, and Fig. 4 is a cross-section of a conventional napkin. It is a diagram. 10...Absorbent body, 11...Liquid permeable inner covering material, 1
2...Liquid permeable outer covering material, 13...Leakage prevention material, 14...
...Flap part, 15...Adhesion point.

Claims (1)

[Scope of utility model registration request] An absorbent body made of an absorbent material is covered with a liquid-permeable inner covering material, and a leak-proofing material whose outer surface is covered with a liquid-permeable outer covering material is placed on the outside of the absorbent body from the bottom surface to the side and top side edges. By folding the end of the liquid-permeable outer covering material along the edge of the leak-preventing material, the outer covering material forms a flap portion containing the leak-preventing material, and the folded outer covering material is folded back along the edge of the leak-proof material. The end of the covering material is sandwiched between the leak-proof material and the liquid-permeable inner covering material, and the inner covering material is rolled into the lower surface side of the absorbent body, and these liquid-permeable outer covering material and inner covering material are A sanitary napkin characterized in that the tip portions of flap portions formed at the upper end of the absorbent body are bonded to each other at multiple points.