JP3812826B2 - Sanitary napkin - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sanitary napkin, and more particularly to a sanitary napkin that can reliably prevent leakage to underwear and further reduce discomfort.
[0002]
[Prior art]
In general, a sanitary napkin is configured by interposing a water-absorbing material between a water-permeable top sheet and a non-water-permeable back sheet, but in physiological bleeding, the outflowed blood spreads through the buttocks, Underwear may be soiled depending on the amount of bleeding and posture. Therefore, in recent years, in sanitary napkins, in order to deal with the above spread of blood, a technique for increasing the absorption capacity of the absorber, a technique for expanding the contact area with the body, a technique for providing gathers around the body that are easy to follow Alternatively, various techniques for making a pants form have been proposed.
[0003]
In addition, as an auxiliary sanitary product, a “sanitary auxiliary absorber” that is used by being disposed on the absorption surface of a sanitary napkin has been proposed. Such a sanitary auxiliary absorber is formed in a rod shape having a substantially triangular cross section perpendicular to the longitudinal direction, and is attached with a napkin to be positioned between the crotch, so that blood flowing out to the back side along the crotch can also be obtained during sleep or the like. Absorption is possible (Japanese Patent Laid-Open No. 10-127692).
[0004]
[Problems to be solved by the invention]
By the way, the conventional sanitary napkins and auxiliary absorbers as described above are based on the idea of coping with this on the premise of spreading to the buttocks at the time of bleeding, and thus cannot necessarily be a radical solution. In fact, depending on the body movement and the form of the underwear to be worn, there is not only a leak to the underwear, but no discomfort is solved. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a novel sanitary napkin that can surely prevent leakage to underwear and further reduce discomfort.
[0005]
[Means for Solving the Problems]
As a result of examining radical measures based on the idea completely different from the concept of the conventional sanitary napkin that absorbs blood that has spread due to bleeding, the following knowledge was obtained.
[0006]
That is, if a block material made of a water-absorbing material and independent from the napkin body is used and the napkin body is mounted with the block material sandwiched between the entrances of the vagina, Since everything is once absorbed directly into the napkin body via the block material, the spread of blood along the crotch and buttocks is prevented, and as a result, if used, the napkin body of the conventional size is used. However, it can absorb blood sufficiently, and there is no discomfort. In other words, the block material acts as a transmission bridge for the blood that flows out to the napkin body. And since the block material is independent from the napkin main body and the state pinched by the entrance of the vagina is maintained, the function as a blood transmission bridge can be maintained even if the napkin main body moves by the movement of the body.
[0007]
The present invention has been made based on the above findings, the gist of which is a napkin body in which a water absorbing material is interposed between a water-permeable top sheet and a water-impermeable back sheet, and the napkin body A block material disposed on the upper surface of the top sheet, and the block material is made of a flexible water-absorbing material and is independent of the napkin body when mounted . Located on a napkin.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a sanitary napkin according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a sanitary napkin according to the present invention. In the following description of the embodiment, the sanitary napkin is abbreviated as “napkin”. In the present invention, water permeability, non-water permeability and water absorption are concepts for physiological bleeding.
[0009]
As shown in FIG. 1, the napkin of the present invention comprises a napkin body (1) in which a water absorbing material (2) is interposed between a water-permeable top sheet (1a) and a non-water-permeable back sheet (1b). And a block material (3) disposed on the upper surface (outer surface) of the top sheet (1a) of the napkin body (1). The block material (3) is made of a flexible water-absorbing material and is provided independently from the napkin body (1).
[0010]
The napkin body (1) is the same as a conventional napkin, and basically includes a top sheet (1a), a back sheet (1b), and a water absorbing material (2). The top sheet (1a) is a sheet on the inner surface side that comes into contact with the body, and examples of such a sheet include nonwoven fabrics made of various thermoplastic resins, punched sheets thereof, punched sheets and films. The back sheet (1b) is a sheet on the outer surface side in contact with clothing, and as such a sheet, various conventionally known non-permeable sheets such as a water-repellent nonwoven fabric and a thermoplastic resin are used. An adhesive layer for fixing the napkin body (1) to the underwear is provided on the outer surface of the back sheet (1b), and such an adhesive layer is covered with release paper until use.
[0011]
The water-absorbing material (2) may be any material that can substantially absorb and retain moisture, and is composed of hydrophilic natural fibers such as pulp, rayon, and cotton, or synthetic fibers such as polyethylene, polypropylene, polyester, and polyamide. It is composed of paper, pulp sheet, non-woven fabric and the like. The water absorbing material (2) may be either a single layer structure or a multilayer structure, and the water absorbing material (2) carries a deodorant, a deodorant, an antibacterial agent, an fragrance, a hygroscopic agent, and the like. You may let them.
[0012]
Said surface sheet (1a) and back sheet (1b) are bonded together in the state which pinched | interposed the water absorbing material (2). The pasting part of the top sheet (1a) and the back sheet (1b) is the peripheral part of each sheet overhanging the outer periphery of the water-absorbing material (2), as in the conventional napkin, A method such as sticking using an adhesive, heat sealing, or ultrasonic welding is employed. In addition, in order to relieve the color of the water absorbing material (2) and improve the appearance between the surface sheet (1a) and the water absorbing material (2), a water-permeable shielding sheet may be interposed.
[0013]
As will be described later, the block material (3) is a small block-like part that is put in a state of being sandwiched in the entrance of the vagina, and is preferably formed in a substantially spherical shape as illustrated so as to always fit the entrance of the vagina. However, as long as there is no inconvenience in mounting, it may be formed in a non-spherical shape such as a hemispherical shape, a cone shape, or an egg shape. A block material (3) is comprised with the water absorbing material similar to a water absorbing material (2).
[0014]
For example, in the case of a substantially spherical shape, the block material (3) can be formed into a ball shape by itself due to the entanglement of fibers. Moreover, after forming into a sheet form once, you may round and shape | mold into a spherical shape. Furthermore, in order to maintain the shape, the outer surface may be covered with a water-permeable net such as a net. That is, as the block material (3), as long as it is a small lump of the above shape that can be fitted to the body, a single molded product of a water absorbent fiber assembly, a water absorbent material coated with a net, a water absorbent material, What was wrapped with the water absorbing sheet etc. can be employ | adopted.
[0015]
The size of the block material (3) is such that a part of the block material (3) can be inserted into the entrance of the vagina, and the diameter of the block material (3) in the case of a spherical shape is usually about 15 to 40 mm. In addition, the flexibility (density of the water-absorbing material) is pinched by hand so that when worn, it is crushed between the body and the napkin body (1) to form a flared shape along the crotch. It is soft enough to be easily deformed.
[0016]
In addition, the above block material (3) is preferably composed of a water-soluble water-absorbing material, for example, cellulose short fibers such as Japanese paper in consideration of inadvertent dropping to the flush toilet. Alternatively, the block member (3) is freely connected to a substantially central portion of the napkin body (1) by a thin string body such as a thread unless the behavior is restricted by the napkin body (1) attached to the underwear. Also good. In this case, the length of the thin string body is set to a sufficient length so that the block material (3) does not come off from the entrance of the vagina by being dragged to the napkin body (1) side at the time of wearing. The block material (3) may carry a deodorant, a deodorant, an antibacterial agent, a fragrance, a hygroscopic agent, etc., as in the case of the water absorbing material (2).
[0017]
When the napkin of the present invention is used, first, the block material (3) is applied to the vagina, and then the napkin body (1) is attached to the undergarment and pressed to the body side with the undergarment as in the conventional napkin. Install in the same way. In that case, since the block material (3) is a small lump shape, it can be made to fit in the state pinched | interposed into the entrance of the vagina by pressing down with the napkin main body (1).
[0018]
In the napkin of the present invention, the block material (3) once absorbs all of the outflowing blood, guides all of the absorbed blood to the napkin body (1), and finally the napkin body (1 ) To absorb. That is, the block material (3) acts as a transmission bridge for the blood that flows out to the napkin body (1). Moreover, since the block material (3) is independent from the napkin body (1), even if the napkin body (1) moves due to the movement of the body due to the movement of the underwear, it does not come off from the entrance of the vagina. The function as a transmission bridge can be maintained, and the spread of blood along the crotch and buttocks can be prevented.
[0019]
Therefore, according to the napkin of the present invention, since all of the blood that has flowed out is absorbed by the napkin body (1) through the block material (3), leakage into the underwear (dirt of clothing) can be reliably prevented, Discomfort can be further reduced. Moreover, according to the napkin of this invention, since the spread of the blood along a body can be prevented, the surface area of a napkin main body (1) can be made small.
[0020]
【The invention's effect】
As described above, according to the sanitary napkin of the present invention, the block material independent from the napkin main body once absorbs all of the blood that flows out, and is transmitted to the napkin main body to be absorbed by the napkin main body. The spread of blood along the crotch and the buttocks can be prevented, and as a result, leakage to the underwear can be reliably prevented, and discomfort can be further reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a sanitary napkin according to the present invention.
[Explanation of symbols]
1: Napkin body 1a: Top sheet and 1b: Back sheet 2: Water absorbing material 3: Block material

Claims (1)

The napkin main body in which a water-absorbing material is interposed between a water-permeable top sheet and a non-water-permeable back sheet, and a block-like block material arranged on the top surface of the top sheet of the napkin main body, the block The sanitary napkin is characterized in that the material is made of a flexible water-absorbing material and is independent of the napkin body when worn .

Images