JP2022061047A - Absorbent article - Google Patents

Abstract

To provide an absorbent article that is easily flushed in a toilet in a state of having absorbed excrement therein.SOLUTION: An absorbent article (1) has an absorber layer and is brought into contact with a wearer while being bent to a non-skin side in a longitudinal direction in a central part in a width direction. In the absorbent article, an absorber layer central part includes a central part in the longitudinal direction of the absorber layer when viewing in a thickness direction and in the width direction. While the absorbent article is in a bent state in which the absorbent article is bent to the non-skin side in the longitudinal direction so that the non-skin side surfaces are brought into contact with each other, distilled water of 4 cc is dropped on a skin side surface of the absorber layer central part. After the absorbent article is allowed to stand for 60 seconds, and is fixed at a height where the other end in the longitudinal direction of the absorbent article is placed apart from a water surface in a beaker at a distance of 10 cm while one end in the longitudinal direction of the absorbent article is positioned in an upper part above the beaker of 2 L where the distilled water of 2 L is poured, and the longitudinal direction of the absorbent article follows the a vertical direction of the beaker, the absorbent article does not make contact with a bottom in the beaker after the elapse of one minute of releasing the fixing.SELECTED DRAWING: Figure 6

Description

The present invention relates to an absorbent article.

As one of the feminine hygiene products, an interlabial pad that is worn in close contact with the labia is known. It is disclosed that it can be done.

International Publication No. 2002/0941553

However, when the interlabial pad was dropped into the toilet, the interlabial pad settled and stuck to the bottom of the toilet bowl, and there was a risk that it could not be flushed with the water flow of the toilet.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article that can easily flush an absorbent article that has absorbed excrement in a toilet.

The main invention for achieving the above object is to have an anteroposterior direction, a width direction and a thickness direction, an absorption layer for absorbing a liquid, and a central portion in the width direction, which is not along the anteroposterior direction. An absorbent article that is bent toward the skin and brought into contact with the wearer. In the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the width thereof when viewed in the thickness direction. The central portion in the direction is the central portion of the absorption layer, and in a bent state of being bent toward the non-skin side along the front-rear direction so that the non-skin sides are in contact with each other, 4 cc of distillation is performed on the skin side surface of the central portion of the absorption layer. After dropping water and leaving it for 60 seconds, on the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-back direction is above and below the beaker. One minute has passed since the fixing was released for the absorbent article fixed at a height such that the distance between the water surface in the beaker and the other end of the absorbent article in the front-rear direction was 10 cm along the direction. Later, the absorbent article is characterized in that the absorbent article is not in contact with the bottom in the beaker.

Further, it has an anteroposterior direction, a width direction, and a thickness direction, has an absorption layer that absorbs liquid, and is bent toward the non-skin side along the anteroposterior direction at the central portion in the width direction. An absorbent article that is brought into contact with the wearer, and in the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the central portion in the width direction when viewed in the thickness direction is the central portion of the absorbent layer. Then, in a bent state in which the non-skin sides were bent toward the non-skin side along the front-rear direction so that the non-skin sides were in contact with each other, 4 cc of distilled water was dropped on the skin side in the center of the absorption layer and left for 60 seconds. Later, in the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-rear direction is along the vertical direction of the beaker. With respect to the absorbent article fixed at a height of 10 cm between the water surface and the other end of the absorbent article in the front-rear direction, at least a part of the absorbent article is in the beaker after the fixing is released. The time until it comes into contact with the inner bottom is time T1, and the product is placed in the bent state, left for 60 seconds without dropping distilled water, and then on the upper part of the beaker containing 2 L of distilled water, the absorbent article. The absorbent property is fixed at a height such that one end of the beaker is on the upper side and the front-rear direction is along the vertical direction of the beaker, and the distance between the water surface in the beaker and the other end of the absorbent article is 10 cm. The article is characterized in that the time T1 is longer than the time T2 when the time from the release of the fixation to the contact of at least a part of the absorbent article with the bottom in the beaker is the time T2. It is an absorbent article.

An absorbent article that has a front-back direction, a width direction, and a thickness direction, and is brought into contact with the wearer in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction. A skin-side adjacent layer having a surface layer capable of contacting the wearer's skin and a non-skin-side layer provided on the non-skin side of the surface layer, and adjacent to the non-skin-side layer from the skin side. It is an absorbent article characterized in that the liquid diffusivity of the non-skin side layer is higher than the liquid diffusivity of the non-skin side layer.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it becomes easy to flush the absorbent article that has absorbed the excrement in the toilet.

It is a top view of the pad 1 in the expanded state. It is a schematic cross-sectional view taken along the line AA of FIG. It is a figure explaining the structure of a pad 1. It is a figure explaining the structure of a pad 1. It is a figure explaining the state which the distilled water is dropped on a pad 1. It is a figure explaining the method of measuring the time until the pad 1 reaches the bottom of a beaker. It is the measurement result of the time T1 of the sample A and the time T2 of the sample B. FIG. 5 is a schematic cross-sectional view taken along the line BB in a state where blue water is dropped on the pad 1 shown in FIG. It is a top view of the state which removed the surface layer 11 from the pad 1 of FIG.

The description of this specification and the accompanying drawings will clarify at least the following matters.
The wearer has an anterior-posterior direction, a width direction, and a thickness direction, has an absorbing layer that absorbs liquid, and is bent toward the non-skin side along the anteroposterior direction at the central portion in the width direction. In the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the central portion in the width direction when viewed in the thickness direction is the central portion of the absorbent layer. 60 After being left for a second, on the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-back direction is along the vertical direction of the beaker. With respect to the absorbent article fixed at a height of 10 cm between the water surface in the beaker and the other end of the absorbent article in the front-rear direction, the absorbent article is absorbed 1 minute after the fixing is released. It is an absorbent article characterized in that the article is not in contact with the bottom in the beaker.

According to such an absorbent article, when the absorbent article that has absorbed excrement is put in the toilet bowl, it easily floats on water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article is released. It reduces the risk of sticking to the bottom of the toilet bowl and makes it easier to flush absorbent articles.

The wearer has an anterior-posterior direction, a width direction, and a thickness direction, has an absorbing layer that absorbs liquid, and is bent toward the non-skin side along the anteroposterior direction at the central portion in the width direction. In the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the central portion in the width direction when viewed in the thickness direction is the central portion of the absorbent layer. 60 After being left for a second, on the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-back direction is along the vertical direction of the beaker. With respect to the absorbent article fixed at a height of 10 cm between the water surface in the beaker and the other end of the absorbent article in the front-rear direction, at least a part of the absorbent article after the fixing is released. The time until it comes into contact with the bottom in the beaker is time T1, and the bent state is set, the distilled water is not dropped, and then the bending force is released and the mixture is left for 60 seconds, and then 2 L of distilled water is added. At the upper part of the beaker, the one end of the absorbent article is on the upper side, and the front-rear direction is along the vertical direction of the beaker, and the distance between the water surface in the beaker and the other end of the absorbent article. With respect to the absorbent article fixed at a height of 10 cm, the time T2 is from when the fixation is released until at least a part of the absorbent article comes into contact with the bottom in the beaker. It is an absorbent article characterized in that the time T1 is longer than the time T2.

According to such an absorbent article, when the absorbent article that has absorbed excrement is put in the toilet bowl, it easily floats on water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article is released. It reduces the risk of sticking to the bottom of the toilet bowl and makes it easier to flush absorbent articles.

An absorbent article that has a front-back direction, a width direction, and a thickness direction, and is brought into contact with the wearer in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction. A skin-side adjacent layer having a surface layer capable of contacting the wearer's skin and a non-skin-side layer provided on the non-skin side of the surface layer, and adjacent to the non-skin-side layer from the skin side. It is an absorbent article characterized in that the liquid diffusivity of the non-skin side layer is higher than the liquid diffusivity of the non-skin side layer.

According to such an absorbent article, diffusion to the non-skin side layer when excrement is absorbed during wearing is reduced, and an air layer is easily formed in the non-skin side layer. When placed in the toilet, it becomes easier to float on the water in the toilet bowl, reducing the risk of the absorbent article sticking to the bottom of the toilet bowl when flushing the absorbent article in the toilet, and making it easier to flush the absorbent article. ..

In such an absorbent article, it is desirable that the skin-side adjacent layer is the surface layer.

According to such an absorbent article, it is easy to promote the diffusion of excrement in the surface layer, reduce the diffusion to the non-skin side layer when the excrement is absorbed during wearing, and the air layer in the non-skin side layer. When the absorbent article is put in the toilet bowl, it becomes easy to float on the water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article may stick to the bottom of the toilet bowl. It makes it easier to flush the absorbent article.

The absorbent article has a non-skin side adjacent layer adjacent to the non-skin side layer from the non-skin side, and the liquid diffusivity of the non-skin side adjacent layer is the liquid diffusivity of the non-skin side layer. Higher is desirable.

According to such an absorbent article, the diffusion to the non-skin side layer when excrement is absorbed during wearing is reduced, and the non-skin side layer between the skin side adjacent layer and the non-skin side adjacent layer is formed. Since the air layer is easily formed, when the absorbent article is put in the toilet bowl, it easily floats on the water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article sticks to the bottom of the toilet bowl. It reduces the risk of spilling and makes it easier to flush the absorbent article.

It is desirable that the absorbent article has an absorbent layer that absorbs a liquid on the non-skin side of the non-skin side layer, and the non-skin side adjacent layer is the absorbent layer.

According to such an absorbent article, diffusion to the non-skin side layer when excrement is absorbed during wearing is reduced, and an air layer is formed in the non-skin side layer between the skin side adjacent layer and the absorption layer. Because it is easy to make, if you put the absorbent article in the toilet bowl, it will easily float on the water in the toilet bowl, and when you flush the absorbent article in the toilet, there is a risk that the absorbent article will stick to the bottom of the toilet bowl. It reduces the amount and makes it easier to flush the absorbent article.

The absorbent article has an absorbent layer that absorbs liquid on the non-skin side of the non-skin side layer, and is bent toward the non-skin side along the front-back direction at the central portion in the width direction. In this state, in the central portion of the absorption layer in the anteroposterior direction, the density of the fibers of the non-skin side layer in the central portion in the width direction is the density of the fibers of the non-skin side layer in the end portion in the width direction. Higher is desirable.

According to such an absorbent article, the absorbent article is worn while being bent toward the non-skin side along the front-back direction, and the central portion in the width direction is brought close to the wearer's excretion opening to collect excrement. Since it is absorbed, the excrement that reaches the non-skin side layer is easily absorbed at the central part in the width direction rather than the end part in the width direction due to the capillary phenomenon, so that it becomes easy to maintain the air layer in the non-skin side layer. ..

The absorbent article has an absorbent layer that absorbs a liquid on the non-skin side of the non-skin side layer, and at the central portion of the absorbent layer in the anteroposterior direction, the center of the absorbent layer in the width direction. The length in the thickness direction from the skin side surface of the surface layer to the skin side surface of the absorption layer in the portion is the width direction end portion of the absorption layer from the skin side surface of the surface layer to the absorption layer. It is desirable that it is shorter than the length in the thickness direction to the side surface of the skin.

According to such an absorbent article, the absorbent article is worn while being bent toward the non-skin side along the front-back direction, and the central portion in the width direction is brought close to the wearer's excretion opening to collect excrement. Since it is absorbed, excrement that has reached the non-skin side layer can be easily transferred to the absorption layer earlier than the width direction end in the central part in the width direction, and it becomes easy to maintain the air layer in the non-skin side layer. ..

The absorbent article has an absorbent layer that absorbs a liquid on the non-skin side of the non-skin side layer, and the absorbent layer has an absorbent layer low basis weight portion in which the basis weight of fibers is lower than that of the surroundings. It is desirable that the absorption layer low basis weight portion is provided at least in a part of the central portion of the absorption layer in the width direction.

According to such an absorbent article, by having the absorption layer low basis weight portion, the absorption layer is made more flexible than in the case of not having the absorption layer low basis weight portion, and it is easy to follow the movement of the wearer. It becomes easier to transfer excrement from the skin surface side to the absorption layer.

In such an absorbent article, the non-skin side layer has a low basis weight portion of the non-skin side layer having a lower basis weight than the surroundings, and is formed on at least a part of the central portion of the non-skin side layer in the width direction. It is desirable that the non-skin side layer low basis weight portion is provided.

According to such an absorbent article, having the non-skin side layer low basis weight portion makes the non-skin side layer more flexible than the case without the non-skin side layer low basis weight portion, and allows the wearer to move. It is easy to follow, and it is easy to transfer excrement to a member provided on the non-skin side from the non-skin side layer through the low basis weight portion of the non-skin side layer.

It is desirable that the absorbent article has a portion between the surface layer and the non-skin side layer where no adhesive is provided.

According to such an absorbent article, it becomes easy to make the non-skin side layer into an air layer containing more air.

Such an absorbent article has an absorbent layer that absorbs a liquid on the non-skin side of the non-skin side layer, and no adhesive is provided between the non-skin side layer and the absorbent layer. It is desirable to have a portion.

According to such an absorbent article, it becomes easy to make the non-skin side layer into an air layer containing more air.

The absorbent article does not have to have a finger insertion portion on the non-skin side surface of the absorbent article into which a finger can be inserted.

According to such an absorbent article, even if the absorbent article does not have a finger insertion portion, when the absorbent article that has absorbed excrement is put in the toilet bowl, it floats on water in the toilet bowl. This makes it easier to flush the absorbent article by reducing the risk of the absorbent article sticking to the bottom of the toilet bowl when flushing the absorbent article in the toilet.

It is desirable that the absorbent article has a finger insertion portion on the non-skin side surface of the absorbent article into which a finger can be inserted.

According to such an absorbent article, the operability of the absorbent article is improved.

In such an absorbent article, it is desirable that a water-repellent member is used for at least a part of the sheet for forming the finger insertion portion.

According to such an absorbent article, when the absorbent article that has absorbed excrement is put in the toilet bowl, it easily floats on water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article is released. It reduces the risk of sticking to the bottom of the toilet bowl and makes it easier to flush absorbent articles.

It is desirable that the absorbent article is provided with a water-repellent member at least a part of the portion visible from the non-skin side surface of the absorbent article.

According to such an absorbent article, when the absorbent article that has absorbed excrement is put in the toilet bowl, it easily floats on water in the toilet bowl, and when the absorbent article is flushed in the toilet, the absorbent article is released. It reduces the risk of sticking to the bottom of the toilet bowl and makes it easier to flush absorbent articles.

The absorbent article may not have a water repellent member.

According to such an absorbent article, even if the absorbent article does not have a water-repellent member, when the absorbent article that has absorbed excrement is put in the toilet bowl, it is put into water in the toilet bowl. It can be made easy to float, and when the absorbent article is flushed in the toilet, the risk of the absorbent article sticking to the bottom of the toilet bowl is reduced, and the absorbent article can be easily flushed. Further, by not having a water-repellent member, the absorbent article becomes easily compatible with water, and when it is flushed to the toilet, the absorbent article is easily decomposed.

=== Embodiment ===
Hereinafter, embodiments will be described with reference to an interlabial pad 1 (hereinafter, also referred to as “pad 1”) as an absorbent article according to the present invention. The interlabial pad is a sanitary product that is sandwiched between the labia of a woman to absorb excrement (body fluid) such as menstrual blood. However, the absorbent article according to the present invention is not limited to the interlabial pad, for example, a urine absorbing pad that abuts on the urethra to absorb urine, an absorptive pad that abuts on the anus and absorbs stool, and the like. There may be.

<< Basic configuration of the interlabial pad 1 >>
FIG. 1 is a plan view of the pad 1 in the expanded state. FIG. 1 is a view seen from the skin surface side of the pad 1. FIG. 2 is a schematic cross-sectional view taken along the line AA of FIG. 3 and 4 are diagrams illustrating the configuration of the pad 1. The center CC in each figure (FIGS. 1 to 6) indicates the center in the width direction, and the center CL is the center in the front-rear direction of the absorption layer 13 (described later) when the pad 1 is viewed in the thickness direction. Is shown. Further, FIGS. 1 and 2 are views in a state where the finger insertion sheet 15 (described later) is cut at the center CC and the pad 1 is placed flat on a flat surface.

The pad 1 has an anteroposterior direction, a width direction, and a thickness direction orthogonal to each other. In the front-rear direction of the pad 1, when worn, the side located on the ventral side of the wearer is referred to as the "front side", and the side located on the back side of the wearer is referred to as the "dorsal side". Further, in the present embodiment, the front side in the front-rear direction is referred to as "one side", and the rear side in the front-rear direction is referred to as "the other side". In the thickness direction of the pad 1, the side that comes into contact with the wearer's skin is referred to as the "skin side", and the opposite side is referred to as the "dorsal side". As shown in FIGS. 1 to 4, the pad 1 has a substantially elliptical shape in which the length in the front-rear direction is longer than the length in the width direction in a plan view, and has a shape symmetrical with respect to the central CC in the width direction. It has a portion where the length in the width direction is narrowed by being confined inward in the width direction by the central CL in the front-back direction. Further, the pad 1 has an asymmetrical shape with respect to the center in the front-rear direction in a plan view. Specifically, the central CL (the center in the front-rear direction of the absorption layer 13) is from the center in the front-rear direction of the pad 1. Located on the rear side, the distance from the front end of the pad 1 to the front end of the absorption layer 13 is longer than the distance from the rear end of the pad 1 to the rear end of the absorption layer 13. That is, in the front-rear direction of the pad 1, the absorption layer 13 is arranged closer to the rear side. As shown in FIGS. 2 to 4, the surface layer 11, the non-skin side layer 12, the absorption layer 13, the back surface layer 14, and the finger insertion sheet 15 are provided.

The pad 1 of the present embodiment is stored and distributed as a product in a state of being bent toward the non-skin side by the folding line F. 3 and 4 are views for explaining a state in which the pad 1 is disassembled into each member. As shown in FIG. 3A, the pad 1 of the present embodiment is bent toward the non-skin side along the fold line F in the central portion in the width direction, and the finger insertion portion 20 is formed on the most non-skin side. The finger insertion sheet 15 is fixed with an adhesive or the like. The fold line F is a fold portion provided in the central portion in the width direction along the front-rear direction. The fold line F is a portion having a predetermined width, and the apex of the fold line F on the skin side (the portion most protruding toward the skin side) is at substantially the same position as the center CC in the width direction. FIG. 3B shows the finger insertion sheet 15 separated from the non-skin side layer 14, and FIG. 3C shows the pad 1 from which the finger insertion sheet 15 has been removed to be horizontal from the folded state at the fold line F. It is in a state of being. Then, from the state shown in FIG. 3C, as shown in FIG. 4, the surface layer 11, the non-skin side layer 12, the absorption layer 13, and the back surface layer 14 are stacked in order from the skin side in the thickness direction, and each member is formed with each member. It is fixed with an adhesive or the like as appropriate.

Since the surface layer 11 is a member located closest to the skin and in contact with the wearer's skin (between the labia) when worn, it is preferable to use a soft sheet that does not easily irritate the skin. The surface layer 11 has the outer shape of the pad 1 and is a liquid-permeable sheet member. Examples of the surface layer 11 include a material obtained by using a non-woven fabric obtained from a manufacturing method such as melt blown, spun bond, point bond, through air, needle punch, dry / wet spun lace, foam film, etc., or a combination thereof. A fiber sheet member containing rayon, acetate, cotton, pulp or a synthetic resin (for example, polyethylene terephthalate: PET) as a component alone or composited so as to form a core-sheath structure can be used alone or mixed. .. The pad 1 of the present embodiment uses a sheet member made of rayon and polyethylene terephthalate.

The non-skin side layer 12 is located on the non-skin side of the surface layer 11 and is located on the skin side of the absorption layer 13. The non-skin side layer 12 flexibly follows changes in the movement of the wearer, changes in the behavior of the labia, pressure from clothes, etc. between the surface layer 11 and the absorption layer 13, and changes its own shape to be worn. It plays the role of a cushion layer that reduces the discomfort given to the person. The shape of the non-skin side layer 12 is substantially elliptical, smaller than the surface layer 11, and is located at a substantially central portion (more accurately, toward the rear side) of the pad 1. Further, the length in the width direction is narrowed by being confined inward in the width direction by the central CL in the front-rear direction of the non-skin side layer 12. As the non-skin side layer 12, for example, pulp, chemical pulp, rayon, acetate, natural cotton, and synthetic fiber can be used alone or in combination. In this embodiment, a fiber in which pulp fiber, rayon fiber, and polyethylene terephthalate (PET) are mixed is mainly used.

The absorption layer 13 is located on the non-skin side of the non-skin side layer 12 and on the skin side of the back surface layer 14, and is an absorber that absorbs body fluids such as excrement. The absorption layer 13 has a substantially elliptical shape and is located at a substantially central portion (more accurately, toward the rear side) of the pad 1. The absorbent layer of the pad 1 of the present embodiment includes a skin-side sheet 131, an absorbent core 132, and a non-skin-side sheet 133 in order from the skin side in the thickness direction.

The absorbent core 132 is a member that absorbs and retains body fluids such as excrement. As the absorbent core 132, for example, pulp, chemical pulp, rayon, acetate, natural cotton, synthetic fiber, cellulose foam, continuous foam of synthetic resin and the like can be used alone or in combination. Further, a particulate polymer absorber and a fibrous polymer absorber may be mixed, or a sheet-shaped polymer absorber may be used. Further, in order to maintain the bulk of the absorbent core and enhance the storage capacity of the body fluid, chemical pulp, acetate, and synthetic fibers crosslinked and crimped by a crosslinking agent may be mixed. The pad 1 uses pulp fibers molded into a predetermined shape.

The skin side sheet 131 is a member that covers the absorbent core 132 from the skin side, and the non-skin side sheet 133 is a member that covers the absorbent core 132 from the non-skin side. The skin-side sheet 131 and non-skin-side sheet 133 include, for example, crushed pulp, cellulose such as cotton, regenerated cellulose such as rayon and fipril rayon, semi-synthetic cellulose such as acetate and triacetate, and hydrophilicity to thermoplastic hydrophobic chemical fibers. Examples thereof include those that have undergone chemical treatment. As the skin side sheet 131 and the non-skin side sheet 133 of the pad 1, a sheet made of pulp and rayon spunlace is used.

Further, by providing the skin-side sheet 131, the excrement that has reached the absorption layer 13 can be easily diffused in the horizontal direction, and the horizontally spread excrement can be absorbed by the absorbent core 132. This makes it easier for the excrement to be quickly absorbed by the absorbent core 132, which makes it easier to reduce the discomfort given to the wearer's skin.

The back surface layer 14 is a sheet member located on the non-skin side of the absorption layer 13. The back surface layer 14 has the outer shape of the pad 1 and has substantially the same shape and size as the front surface layer 11 in a plan view. As the back surface layer 14, a sheet member such as a liquid permeable sheet or a liquid permeable sheet can be used. For example, a synthetic resin sheet-like film, a breathable film, pulp, paper, a non-woven fabric, a breathable liquid blocking sheet, etc. Alternatively, a sheet member or the like in which these are combined can be used. In this embodiment, a sheet-like member in which rayon, polyethylene terephthalate (PET), and pulp are mixed is used.

The finger insertion sheet 15 is a sheet member for forming the finger insertion portion 20. The finger insertion portion 20 is a space between the finger insertion sheet 15 and the back surface layer 14, and is a space for the wearer to insert a finger when the pad 1 is attached. The finger insertion sheet 15 has a shorter length in the front-rear direction than the back surface layer 14, and a shorter length in the width direction than the back surface layer 14. Further, it is provided on the non-skin side of the back surface layer 14 and on the rear side in the front-rear direction. The widthwise end of the finger insertion sheet 15 is fixed to the widthwise end of the back surface layer 14 with an adhesive such as a hot melt adhesive. The front end of the finger insertion sheet 15 and the rear end of the finger insertion sheet 15 each have an opening in which the finger insertion sheet 15 and the back surface layer 14 are not fixed with an adhesive. The front opening is larger than the rear opening. By inserting a finger (for example, the index finger) from the opening on the front side of the finger insertion portion 20, the wearer can attach the pad 1 to the labia while supporting the pad 1.

As the finger insertion sheet 15, the same material as the front surface layer 11 and the back surface layer 14 can be used. For example, spunlace non-woven fabrics made of composite synthetic fibers such as PE / PP, PE / PET, PP / PP, shrink-type non-woven fabrics, non-woven fabrics such as extensible spunbond, rayon, acetate, cotton, pulp or synthetic resin ( For example, a sheet member made of polypropylene fiber (polypropylene terephthalate: PET) or a sheet member such as a breathable film, paper, or a breathable liquid blocking sheet can be used. Further, for example, synthetic rubber, a film made of an amorphous olefin resin, a perforated foam film, a net, a woven fabric or a woven fabric in which a spun filament made of a synthetic rubber is woven into a woven fabric, and a synthetic rubber are mainly used. A stretchable sheet such as a spunbonded non-woven fabric, a melt-blown non-woven fabric, or a foamed foam sheet may be used. In this embodiment, a sheet member mainly made of pulp and rayon is used.

The pad 1 of the present embodiment is in an unused state and is bent to the non-skin side along the fold line F, but the present invention is not limited to this. For example, in the unused state, the fold line F is not provided and the fold line F is not bent, and the wearer may fold the fold line F to the non-skin side when wearing the fold line F. Further, a plurality of folding lines F may be provided. The fold line F may have a so-called fold habit that is bent, or may have no fold habit. Further, the finger insertion sheet 15 may not be provided.

<< About mounting pad 1 >>
The pad 1 is put into a worn state by being brought into contact with the wearer's skin (excretion port) in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction. Specifically, the pad 1 of the present embodiment is a sanitary product, and is bent toward the non-skin side so as to be convex in the skin direction along the fold line F, and the central portion in the width direction of the pad 1 is formed by a woman. It can be put on by sandwiching it between the labia. Since the pad 1 has higher adhesion to the body (excretion port) than the menstrual napkin, leakage of excrement (menstrual blood) is less likely to occur, and discomfort during excretion is less likely to occur.

At the time of wearing, the wearer puts the pad 1 between the labia from the ventral side with the finger (index finger or middle finger) inserted into the finger insertion portion 20 from the front side of the pad 1 bent at the folded portion F. It can be put into a mounted state by touching it and sandwiching it. Then, after use, the attached pad 1 may be dropped into the toilet (toilet), or the attached pad 1 may be grasped by hand and put into the toilet, and then flushed into the toilet for processing. can. It is preferable that each member and the adhesive constituting the pad 1 are made of a biodegradable material, a water-dispersible material, or a water-soluble material for flushing to the toilet. By flushing it to the toilet, it is possible to reduce the time and effort required to dispose of the pad 1 as dust and reduce the amount of dust.

"Biodegradable" means that in the presence of bacteria such as actinomycetes and other microorganisms, substances are decomposed into gas such as carbon dioxide or methane, water and biomass under anaerobic or aerobic conditions according to natural processes. That is, the biodegradability (biodegradation rate, degree of biodegradation, etc.) of the substance is comparable to that of naturally occurring materials such as fallen leaves or synthetic polymers generally recognized as biodegradable under the same environment. say. "Water dispersibility" is also water-decomposable, and although it is not affected by a limited amount of water (menstrual blood) at the time of wearing, in a large amount of water or a stream of water, the fibers form at least general toilet pipes. It refers to the property of being easily dispersed in small pieces that do not clog. "Water-soluble" refers to the property of being unaffected by a limited amount of water (menstrual blood) at the time of wearing, but dissolving in a large amount of water or a stream of water.

<< About Pad 1 in the toilet >>
It is preferable that the used interlabial pad placed (dropped) in the toilet bowl is in a state of floating in water in the toilet bowl. When the interlabial pad is submerged in the water in the toilet bowl, the interlabial pad sticks to the bottom of the toilet bowl, and even if the water is flushed in the toilet, the interlabial pad remains stuck to the bottom of the toilet. I was afraid.

On the other hand, the pad 1 tends to float on water in the toilet bowl after use. "Floating" when the pad 1 is disposed of in the toilet (toilet bowl) means a state in which the pad 1 is not in contact with the bottom of the toilet bowl and is floating on the surface of the water or in the water. FIG. 5 is a diagram illustrating a state in which distilled water is dropped onto the pad 1. FIG. 6 is a diagram illustrating a method of measuring the time required for the pad 1 to reach the bottom of the beaker.

The ease of floating the sample A corresponding to the used pad 1 in water is examined. The pad 1 is attached so that the top of the bent portion is brought into contact with the wearer's skin (excretion opening) in a state of being bent along the folding line F along the front-rear direction. Therefore, as shown in FIG. 5, in a bent state where the pads 1 are bent along the fold line F so that the non-skin sides of the pad 1 are in contact with each other, 4 cc of distilled water is dropped onto the portion X and the sample A is left for 60 seconds. It is assumed that the pad 1 has already been completed. In the present embodiment, the pad 1 is bent by applying a force to the pad 1 with a fixture (not shown) or the like. When the pad 1 is viewed in the thickness direction, the central portion in the front-rear direction of the absorption layer 13 and the central portion in the width direction of the absorption layer 13 are the central portions of the absorption layer. Further, the portion X in FIG. 5 is a portion on the skin surface side of the central portion of the absorption layer, and hits the wearer in a state where the pad 1 is folded toward the non-skin side along the front-back direction at the central portion in the width direction. It corresponds to the part that receives the excreted excrement when it is worn in contact with it. The amount of distilled water to be dropped (4 cc) is a general amount of excrement absorbed as the interlabial pad of the pad 1 when worn. The ease with which the sample A floats on distilled water corresponds to the ease with which the used pad 1 in the toilet floats on the water in the toilet bowl. It is preferable that the distilled water is dropped onto the portion X in a state where the tip of the pipette does not come into contact with the pad 1 and the tip of the pipette is not too far away from the portion X. In this embodiment, a pipette (Nichipet EX2) manufactured by Nichilipo Co., Ltd. is used, and 4 cc of distilled water is added to the portion X in a state where the distance from the surface (skin side surface) of the portion X to the tip of the pipette is 5 mm. It is dripping.

Regarding the easiness of floating the sample A with respect to the distilled water, first, as shown in FIG. 6, the sample A (pad 1) is placed at the upper part of the beaker for 2L containing 2L of distilled water, and the front end (front and back) of the sample A. The water surface in the beaker and the rear end of the sample A (the other end in the front-rear direction) with the one end in the direction as the upper side and the front-back direction of the sample A along the vertical direction of the beaker. The distance from the other end) is fixed at a height of 10 cm. Then, the fixing is released, the sample A is dropped toward the beaker, and the ease of floating of the sample A with respect to the distilled water in the beaker is observed.

The sample A does not touch the bottom of the beaker 1 minute after the fixing at a height of 10 cm between the water surface in the beaker and the rear end of the sample A is released. That is, even after dropping the sample A toward the water surface and one minute later, the sample A does not sink to the bottom of the beaker and is in a state of floating on the water surface or in the water. The general time from dropping the pad 1 in the toilet (toilet bowl) to flushing the water is 1 minute. Therefore, as in sample A, the pad 1 does not come into contact with the bottom of the beaker even after 1 minute has passed, so that even when the used pad 1 that has absorbed excrement is put in the toilet bowl, the pad 1 can be used. Since it easily floats on water in the toilet bowl, the risk of the pad 1 sticking to the bottom of the toilet bowl can be reduced, and the pad 1 can be easily flushed in the toilet.

Further, with respect to the sample B corresponding to the pad 1 in the unused state, the ease of floating of the sample B with respect to the distilled water is observed and compared with the sample A. Sample B is in a bent state in which the pads 1 are bent along the fold line F so that the non-skin side surfaces of the pad 1 are in contact with each other, and 4 cc of distilled water is not dropped. In the present embodiment, a bending force (bending force) is applied to the pad 1 with a fixing tool (not shown) or the like to bring the pad 1 into a bent state. As shown in FIG. 6, in the upper part of the beaker for 2L containing 2L of distilled water, the front end of the sample A (one end which is one end in the front-rear direction) is on the upper side, and the front-back direction of the sample A Is along the vertical direction of the beaker, and the distance between the water surface in the beaker and the sample A (the other end, which is the other end in the front-rear direction) is released from fixing at a height of 10 cm until it touches the bottom of the beaker. Time is time T1, and as shown in FIG. 6, the upper part of the beaker for 2L containing 2L of distilled water, with the front side (one end, which is one end in the front-rear direction) of sample B as the upper side. In addition, the front-rear direction of the sample B is aligned with the vertical direction of the beaker, and the height of the water surface in the beaker and the rear end of the sample B (the other end, which is the other end in the front-rear direction) is fixed at a height of 10 cm. When the time from the release to the contact with the bottom of the beaker is the time T2, the time T1 is longer than the time T2.

In the sample A assuming that it has been used, the dropped 4 cc of distilled water stays in a part of the pad 1, and the portion of the pad 1 that has absorbed the distilled water and the portion that has an air layer that does not absorb the distilled water. In the sample A having an air layer, the portion that has absorbed the distilled water covers the sample A like a film that covers the air layer, so that the sample A easily floats on the water. On the other hand, in the sample B, which is assumed to be in an unused state, distilled water is not dropped in advance and is dropped on the water surface as it is, so that the entire pad 1 is immersed in water, so that an air layer is difficult to form and it is easy to sink. Become. Therefore, the time T1 becomes longer than the time T2.

Since the time T1 is longer than the time T2, the pad 1 in the state of absorbing excrement by wearing is more likely to float in water in the toilet bowl than the pad 1 in the unused state, so that the pad 1 is a toilet bowl. It is possible to reduce the risk of sticking to the bottom of the pad 1 and make it easier to flush the pad 1 in the toilet.

The pad 1 may have a structure that does not have a water-repellent member. Even if the pad 1 is made of a member that does not have water repellency, that is, a hydrophilic member, the pad 1 in a state of absorbing excrement makes it easier to float on water in the toilet bowl, so that the pad 1 becomes a toilet bowl. It is possible to reduce the risk of sticking to the bottom of the pad 1 and make it easier to flush the pad 1 in the toilet. Further, since the pad 1 is made of a member having no water repellency, the pad 1 becomes easily compatible with water, and the pad 1 is easily disassembled when flushed to the toilet.

For example, in the case where each member of the pad 1 does not have a water-repellent member and is composed of a hydrophilic member, the sample A corresponding to the above-mentioned used (4 cc of distilled water is dropped) and unused. FIG. 7 shows the results of observing the ease of floating of Sample A and Sample B with respect to distilled water for Sample B corresponding to the state (without dropping distilled water). FIG. 7 shows the measurement results of the time T1 of the sample A and the time T2 of the sample B. In the result shown in FIG. 7, the case where the water surface in the beaker and the rear ends of the samples A and B are not in contact with the bottom of the beaker one minute after the fixing at a height of 10 cm is released is described as "-". Is shown as. As shown in FIG. 7, the unused sample B is in contact with the bottom of the beaker within about 10 seconds, but the sample A, which is assumed to be used, is not in contact with the bottom of the beaker even after 1 minute has passed. It is clear that time T1 is longer than time T2.

The pad 1 may have a water-repellent member. The water-repellent member can be arbitrarily set. The water-repellent member may be a member having water repellency in advance, or a hydrophilic member coated with a water-repellent agent. A water-repellent agent may be further applied to the water-repellent member.

It is preferable that a water-repellent member is provided at least a part of the portion visible from the non-skin side surface of the pad 1. For example, it is preferable to provide a water-repellent member on at least a part of the back surface layer 14 or at least a part of the finger insertion sheet 15. Further, more preferably, a water-repellent member may be provided on the non-skin side surface of the back surface layer 14 and the finger insertion sheet 15. By having the water-repellent member, the pad 1 easily floats on the water in the toilet bowl, so that the possibility that the pad 1 sinks and sticks to the bottom of the toilet bowl can be reduced, and it can be easily flushed in the toilet. In addition, water repellent treatment may be applied to at least a part of the portion of the pad 1 that is visible from the non-skin side surface. For example, when the back surface layer 14 or the finger insertion sheet 15 is provided with a water-repellent member, or when the water-repellent member is not provided, at least a part of the back surface layer 14 is further subjected to a water-repellent treatment. Alternatively, at least a part of the finger insertion sheet 15 may be treated with water repellent treatment. By improving the water repellency of the non-skin side of the pad 1, the pad 1 can easily float on the water in the toilet bowl, reducing the risk of the pad 1 sinking and sticking to the bottom of the toilet bowl, and making it easier to flush in the toilet. be able to. Since the non-skin side surface of the pad 1 has water repellency, air is contained in the water-repellent most non-skin side member (layer) and the member (layer) adjacent to the most non-skin side member from the skin side. It will be easier. In addition, since the non-skin side surface of the pad 1 has water repellency, it becomes easier to float with the non-skin side surface of the pad 1 facing upward (water surface side) and the skin side surface facing downward (underwater side), and the toilet. It becomes easier to flow by riding the water flow when flushing. Further, it is more preferable to make the water repellency of the finger insertion sheet 15 higher than that of the back surface layer 14. As a result, the non-skin side surface of the pad 1 is directed toward the upper side (water surface side), and the skin side surface is directed toward the lower side (underwater side).

"Water repellency" is also "hydrophobic", meaning that the liquid does not spread on the surface of the member and that the surface of the member has a contact angle greater than 90 °. The contact angle is the contour curve at the intersection of the contour curve of the liquid and the horizontal plane in a state where the member having the horizontal plane (horizontal surface) and the water (droplets) dropped on the horizontal plane are in contact with each other. It is an angle formed by the tangent line of the above and the horizontal plane.

As in the present embodiment, the pad 1 may be provided with the finger insertion portion 20 to improve the operability of the pad 1, or the pad 1 may not have the finger insertion portion 20. Regardless of the presence or absence of the finger insertion portion 20 of the pad 1, an adhesive portion may be provided on the non-skin side surface of the pad 1 or a knob portion may be provided to improve operability. Regardless of whether the pad 1 has a finger insertion portion 20 or no finger insertion portion 20, when the pad 1 that has absorbed excrement is put into the toilet bowl, the pad 1 is inserted in the toilet bowl. It can be made easier to float and easier to flush in the toilet.

The finger insertion portion 20 is not limited to the space between the finger insertion sheet 15 and the back surface layer 14 because the pad 1 includes the finger insertion sheet 15 as in the present embodiment. For example, the pad 1 does not include the finger insertion sheet 15, and the rear (or front) ends of the pad 1 in the front-rear direction and both ends in the width direction are curved toward the non-skin side to form the back surface layer 14. The space surrounded by the back surface layer 14 formed by joining the non-skin side surfaces may be used as a finger insertion portion for inserting a finger. Even with such a finger insertion portion, the operability of the pad 1 can be improved. Further, when the non-skin side surfaces of the back surface layer 14 are joined to each other, the back surface layer 14 is in a bent state or a curved state to the non-skin side, so that the non-skin side surfaces of the back surface layer 14 are not joined to each other. In addition, it becomes easier to maintain the space of the finger insertion portion as compared with the case where the back surface layer 14 is in a flat state. Since the space of the finger insertion portion makes it easier to float on the water in the toilet bowl, the risk of the pad 1 sticking to the bottom of the toilet bowl can be reduced, and the pad 1 can be easily flushed in the toilet.

Further, in the present embodiment, the front end of the pad 1 (one end which is one end in the front-rear direction) is on the upper side of the upper part of the beaker for 2L containing 2L of distilled water, and the water surface in the beaker and the pad 1 are placed on the upper side. Fix the distance from the rear end (the other end, which is the other end in the front-rear direction) to a height of 10 cm, release the fixing, drop the pad 1 toward the beaker, and inside the beaker of the pad 1. We observed the ease of floating with distilled water, but it is not limited to this. When the pad 1 has a shape symmetrical with respect to the center in the front-rear direction, either one end (front end) or the other end (rear end) of the pad 1 may be on the upper side of the beaker for 2L. That is, one end (front side) and the other end (rear side) of the pad 1 in the front-rear direction can be arbitrarily determined.

Further, the pad 1 that comes into contact with the wearer in a state of being bent toward the non-skin side (at the fold line F) along the front-back direction at the central portion in the width direction is a surface capable of contacting the wearer's skin. It has a layer 11 and a non-skin side layer 12 provided on the non-skin side of the surface layer 11, and the liquid diffusivity of the skin-side adjacent layer adjacent to the non-skin-side layer 12 from the skin side is non-skin. Higher than the liquid diffusivity of the side layer 12. The present embodiment is a pad 1 that is brought into contact with the wearer in a state of being bent along the fold line F, and the skin-side adjacent layer adjacent to the non-skin-side layer 12 from the skin side is the surface layer 11. In the pad 1, the liquid diffusivity of the surface layer 11 is higher than the liquid diffusivity of the non-skin side layer 12.

As a result, when the excrement (liquid) is absorbed during wearing, the excrement is more easily diffused in the surface layer 11 than in the non-skin side layer 12, and the liquid excrement in the non-skin side layer 12 is easily diffused. In order to reduce the diffusion, the surface layer 11 tends to be a layer in which excrement is diffused, and the non-skin side layer 12 tends to be an air layer in which excrement is not diffused. In this way, when the pad 1 is put into the toilet bowl in a state where the excrement is absorbed by the surface layer 11 and the air layer is provided on the non-skin side layer 12, the air layer makes it easier to float on water in the toilet bowl. Therefore, it is possible to reduce the possibility that the pad 1 sticks to the bottom of the toilet bowl. Further, since the skin-side adjacent layer adjacent to the non-skin-side layer 12 from the skin side is the surface layer 11, the excrement is diffused in the surface layer 11 which comes into contact with the excrement most when worn, and the surface layer 11 is non-skinned. Since the air layer can be easily provided on the non-skin side layer 12 adjacent from the side, it can be easily floated by water in the toilet bowl. Therefore, it becomes easy to flush the pad 1 into the toilet.

The difference in liquid diffusivity between the surface layer 11 and the non-skin side layer 12 can be caused by, for example, different fiber densities or the use of materials having different liquid diffusibility. In the pad 1, the density of the fibers constituting the surface layer 11 is on the non-skin side in the central portion in the width direction and the central portion in the front-rear direction (central portion of the absorption layer) of the absorption layer 13 when viewed in the thickness direction. It is higher than the density of the fibers constituting the layer 12. Therefore, due to the capillary phenomenon, the liquid diffusivity of the surface layer 11 becomes higher than the liquid diffusivity of the non-skin side layer 12.

The pad 1 is attached in a state of being bent along a folding line F along the front-rear direction, with the bent top abutting against the wearer's skin (excretion opening). Therefore, as shown in FIGS. 5 and 8, the absorption layer 13 is in the front-rear direction when the pad 1 is viewed in the thickness direction in a state of being bent along the fold line F so that the non-skin side surfaces of the pad 1 are in contact with each other. 4 cc of water colored in blue (hereinafter, also referred to as "blue water") is dropped onto the skin side surface portion X of the central portion and the central portion (central portion of the absorption layer) in the width direction of the absorption layer 13 in the above. By comparing the area (diffusion region) in which the blue water is diffused, the liquid diffusivity of the surface layer 11 and the non-skin side layer 12 can be compared. FIG. 8 is a schematic cross-sectional view taken along the line BB in a state where blue water is dropped on the pad 1 shown in FIG. FIG. 8 shows the central portion of the absorbent layer 13 in the front-rear direction when the pad 1 is viewed in the thickness direction in a state of being bent along the folding line F so that the non-skin side surfaces of the pad 1 are in contact with each other (FIG. 5). Further, 4 cc of water (distilled water) colored in blue was dropped onto the skin side surface portion X of the central portion (central portion of the absorbent layer) in the width direction of the absorbent layer 13, and the bent state was released and left for 60 seconds. The later cross section is shown. Note that FIG. 8 is a cross-sectional view of the pad 1 in a bent state, and in FIG. 8, a region where blue water is diffused and colored in blue is shown by dot-shaped hatching.

The portion X in FIGS. 5 and 8 is a portion of the central portion of the absorption layer on the skin surface side, and the pad 1 is folded toward the non-skin side along the front-back direction at the central portion in the width direction for the wearer. It corresponds to the part that receives the excreted excrement when it is worn in contact with it. When the pad 1 is bent along the fold line F so that the non-skin side surfaces are in contact with each other and the blue water is absorbed by the portion X, the liquid diffusivity of the surface layer 11 is higher than that of the non-skin side layer 12. As a result, as shown in FIG. 8, the blue water diffuses in a wider range in the surface layer 11 than in the non-skin side layer 12.

As described above, since the liquid diffusivity of the surface layer 11 is higher than the liquid diffusivity of the non-skin side layer 12, the diffusion of the liquid in the non-skin side layer 12 is reduced, and the liquid is applied to the non-skin side layer 12. While it becomes easier to provide an air layer that has not absorbed, a layer containing a liquid due to absorption of the liquid of the surface layer 11 is provided on the skin side of the non-skin side layer 12, and the layer that has absorbed the liquid is the non-skin side. Since it covers at least a part of the non-skin side layer 12 located in, it becomes easy to maintain the air layer. As a result, when the pad 1 is put in the toilet bowl, the air layer of the non-skin side layer 12 makes it easier to float on the water in the toilet bowl, reducing the risk of the pad 1 sticking to the bottom of the toilet bowl, and making the pad 1 a toilet. It becomes easier to flush the toilet.

The liquid diffusivity of the surface layer 11 and the liquid diffusivity of the non-skin side layer 12 can be compared by the following method. For example, when the pad 1 is viewed in the thickness direction in a state of being bent along the folding line F so that the non-skin side surfaces of the pad 1 are in contact with each other, the central portion of the absorption layer 13 in the front-rear direction and the width direction of the absorption layer 13 4 cc of colored (for example, blue) water (distilled water) is dropped onto the portion X on the skin side surface of the central portion (central portion of the absorption layer), and the bent state is released and left for 60 seconds. Then, the diffusion regions of the colored water in each layer are compared. In this diffusion region comparison, as described above, the area of the colored region may be compared in the cross section of the pad 1, or the area of the colored region may be compared in the planar state of the pad 1. When comparing the diffusion areas in the flat state of the pad 1, water is dropped, and the pad 1 after 60 seconds has passed, if necessary, the finger insertion sheet 15 and the like are removed, and the pad 1 is placed on a flat surface. The comparison can be made by removing the layer 11 and the non-skin side layer 12 to obtain the area of the colored region in each member.

It should be noted that the comparison of the colored regions can be performed by a well-known method such as a visual comparison or a comparison using a photographed image. As a method of comparing the areas using the captured images, for example, an optical microscope (VHX-900F (manufactured by KEYENCE)) is used to observe and photograph the surface layer 11 and the non-skin side layer 12, and each of the obtained images is obtained. It is possible to make a comparison by analyzing the image from the image using the portion having a different hue with the transmitted light as a diffused region of colored water and measuring the area of each diffused region.

Further, it is preferable that the liquid diffusivity of the non-skin side adjacent layer adjacent to the non-skin side layer 12 from the non-skin side is higher than the liquid diffusivity of the non-skin side layer 12. In the pad 1 of the present embodiment, the non-skin side adjacent layer adjacent to the non-skin side layer 12 from the non-skin side is the absorption layer 13, and the liquid diffusivity of the absorption layer 13 is the liquid diffusion of the non-skin side layer 12. Higher than sex.

As a result, when excrement (liquid) is absorbed during wearing, the absorption layer 13 is more likely to absorb the excrement than the non-skin side layer 12, and the liquid excrement is diffused in the non-skin side layer 12. The absorption layer 13 tends to be a layer that has absorbed excrement, and the non-skin side layer 12 tends to be an air layer in which excrement is not diffused. That is, the air layer of the non-skin side layer 12 is likely to be formed between the surface layer 11 and the absorption layer 13. In this way, when the pad 1 is put in the toilet bowl, the air layer provided between the surface layer 11 and the absorption layer 13 (adjacent layer on the non-skin side) makes it easier for the pad 1 to float on water in the toilet bowl. It is possible to reduce the risk of sticking to the bottom of the toilet bowl. Further, since the non-skin side adjacent layer adjacent to the non-skin side layer 12 from the non-skin side is the absorption layer 13, it becomes easy to provide an air layer in the air layer between the surface layer 11 and the absorption layer 13, and the toilet bowl. The water makes it easier to float inside, making it easier to flush the pad 1 into the toilet, and at the same time, the absorption layer 13 can absorb more excrement.

The difference in liquid diffusivity between the non-skin side layer 12 and the absorbent layer 13 can be caused by different fiber densities or by using materials having different liquid diffusibility as described above. In the pad 1, when the pad 1 is viewed in the thickness direction, the absorption is performed at the portion X which is the skin side surface of the central portion in the front-rear direction of the absorption layer 13 and the central portion (central portion of the absorption layer) in the width direction of the absorption layer 13. The density of the fibers constituting the layer 13 is higher than the density of the fibers constituting the non-skin side layer 12. Therefore, due to the capillary phenomenon, the liquid diffusivity of the absorption layer 13 becomes higher than the liquid diffusivity of the non-skin side layer 12.

The liquid diffusibility of the non-skin side layer 12 and the absorption layer 13 can be compared by the same method as described above. As shown in FIG. 8, when the diffusion regions of blue water when 4 cc of blue water is dropped on the portion X in a state of being bent along the fold line F so that the non-skin side surfaces of the pad 1 are in contact with each other, the absorption layer is compared. It can be seen that 13 is spread over a wider area than the non-skin side layer 12. The area of the diffusion region can be compared by the same method as described above.

In the central portion (fold line F) in the width direction of the pad 1, in a state of being bent toward the non-skin side along the front-rear direction, in the central portion in the front-rear direction of the absorption layer 13, the width direction of the non-skin side layer 12 It is preferable that the density of the fibers in the central portion of the non-skin side layer 12 is higher than the density of the fibers in the end portion in the width direction of the non-skin side layer 12. The pad 1 is bent toward the non-skin side along the front-back direction and is brought into contact with the wearer's skin, and the central portion of the pad 1 in the width direction is brought close to the excretion opening to prepare the excrement. To absorb. Therefore, the excrement that has been absorbed in the central portion of the pad 1 in the width direction and reached the non-skin side layer 12 has a higher fiber density in the non-skin side layer 12 than the end portion 12e in the width direction due to the capillary phenomenon. Since it is easy to hold the excrement in the central portion 12c in the high width direction, it is easy to hold the excrement in the central portion 12c in the width direction of the non-skin side layer 12 in the state of being bent at the central portion in the width direction in the mounted state. It is possible to reduce the risk of spreading toward the widthwise end 12e of the non-skin side layer 12. This makes it easier to provide the air layer of the non-skin side layer 12, and when the pad 1 is put in the toilet bowl, the air layer of the non-skin side layer 12 makes it easier to float on water in the toilet bowl, and the pad 1 of the toilet bowl. It reduces the risk of sticking to the bottom and makes it easier to flush the pad 1 into the toilet.

The difference in the density of the fibers of the non-skin side layer 12 is the difference in the density of the fibers in the non-skin side layer 12 in the central part in the front-rear direction of the absorption layer 13 in the state of being bent at the central portion (fold line F) in the width direction of the pad 1. The density of the fibers in the central portion in the width direction of the non-skin side layer 12 may be higher than the density of the fibers in the end portion in the width direction of the non-skin side layer 12, for example, in the manufacturing process, in the width direction of the non-skin side layer 12. The non-skin side layer 12 may have a fiber density in the central portion higher than the fiber density at the end portion in the width direction of the non-skin side layer 12, and the non-skin side layer 12 having a uniform fiber density at the time of manufacture may be used. Then, by bending along the front-back direction along the fold line F, the density of the fibers in the central portion in the width direction of the non-skin side layer 12 may be higher than the density of the fibers in the end portion in the width direction.

Further, as shown in FIG. 8, in the central portion of the absorption layer 13 of the pad 1 in the front-rear direction, from the skin side surface of the surface layer 11 to the skin side surface of the absorption layer 13 in the central portion 13c in the width direction of the absorption layer 13. It is preferable that the length L1 in the thickness direction is shorter than the length L2 in the thickness direction from the skin side surface of the surface layer 11 to the skin side surface of the absorption layer 13 at the widthwise end portion 13e of the absorption layer 13 (L1). <L2). The pad 1 is worn in a state of being bent toward the non-skin side along the front-back direction, and the central portion in the width direction of the pad 1 is brought close to the wearer's excretion opening to absorb excrement. By making L1 shorter than the length L2, the excrement that reaches the non-skin side layer 12 at the time of wearing is collected in the central portion (absorption layer) in the width direction of the pad 1 as compared with the case where the length L1 is longer than the length L2. In the central portion 13c in the width direction of 13, it becomes easier to move to the absorption layer 13 earlier than the end portion in the width direction (the end portion 13e in the width direction of the absorption layer 13). This reduces the diffusion of excrement in the non-skin side layer 12, makes it easier to maintain the air layer in the non-skin side layer 12, makes it harder to sink in the toilet bowl, and makes it easier to flush the toilet.

The non-skin side layer 12 of the pad 1 has a non-skin side layer low basis weight portion having a lower basis weight than the surroundings, and this non-skin side layer low basis weight portion is a central portion in the width direction of the non-skin side layer 12. It is preferable that it is provided at least partially. Further, the absorption layer 13 of the pad 1 has an absorption layer low basis weight portion whose fiber basis weight (weight of fiber per unit area) is lower than that of the surroundings, and this absorption layer low basis weight portion is in the width direction of the absorption layer 13. It is preferable that it is provided in at least a part of the central portion.

As shown in FIG. 9, the pad 1 of the present embodiment has a plurality of slits 12s, slits 13s, and a plurality of squeezed portions E formed in a state where the non-skin side layer 12 and the absorption layer 13 are overlapped. FIG. 9 is a plan view of the pad 1 of FIG. 1 in a state where the surface layer 11 is removed. In the present embodiment, the slits 12s and 13s and the squeezed portion E are formed in a state where the non-skin side layer 12 and the absorption layer 13 are overlapped. Therefore, the slit 12s and the slit 13s are provided at the same position when viewed from the skin side. The slit 12s has a vertical slit 12sa along the front-rear direction, a width slit 12sb along the width direction, and an oblique slit 12sc having an inclination in the front-rear direction and the width direction. The slit 13s has a vertical slit 13sa along the front-rear direction, a width slit 13sb, and an oblique slit 13sc having an inclination in the front-rear direction and the width direction. The slits 12s and 13s are portions that penetrate the non-skin side layer 12 and the absorption layer 13 in the thickness direction, respectively, and are portions where the basis weight of the fibers is 0, respectively. That is, the slit 12s of the non-skin side layer 12 is the non-skin side layer low basis weight portion, and the slit 13s of the absorption layer 13 is the absorption layer low basis weight portion.

It is preferable that a plurality of slits 12s (non-skin side layer low basis weight portion) are provided in at least a part of the central portion in the width direction of the non-skin side layer 12. By providing the non-skin side layer 12 with the slit 12s (non-skin side layer low basis weight portion), the rigidity of the non-skin side layer 12 is made lower than when the non-skin side layer 12 has no slit 12s (non-skin side layer low basis weight portion). Therefore, the non-skin side layer 12 can be made flexible to make it easier to follow the movement of the wearer, or the non-skin side layer 12 can be moved to the non-skin side through the slits 12s (non-skin side layer low basis weight portion). It becomes easy to transfer excrement to the provided member. Further, it is more preferable that the plurality of slits 12s have vertical slits 12sa along the front-rear direction like the pad 1, and it is more preferable that the vertical slits 12sa are provided in the central portion in the width direction. .. As shown in FIG. 9, the vertical slit 12sa of the pad 1 is provided with a plurality of vertical slits 12sa at the center in the width direction. As a result, the excrement can be transferred toward the non-skin side in the thickness direction, the non-skin side layer 12 can be easily made flexible, and the pad 1 can be easily bent in the front-rear direction.

It is preferable that a plurality of slits 13s (absorption layer low basis weight portion) are provided in at least a part of the central portion in the width direction of the absorption layer 13. Since the absorption layer 13 has the slit 13s (absorption layer low basis weight portion), the rigidity of the absorption layer 13 can be lowered as compared with the case where the absorption layer 13 does not have the slit 13s (absorption layer low basis weight portion). Is made flexible so that it can easily follow the movement of the wearer, and excrement from the skin surface side (surface layer 11, non-skin side layer 12) can be easily transferred to the absorption layer 13. Further, it is more preferable that the plurality of slits 13s have vertical slits 13sa along the front-rear direction like the pad 1, and it is more preferable that the vertical slits 12sa are provided in the central portion in the width direction. .. The vertical slit 13sa of the pad 1 is provided with a plurality of vertical slits 13sa at the center in the width direction. As a result, the rigidity of the absorption layer 13 is lowered and the absorption layer 13 is made flexible, so that the absorption layer 13 and the pad 1 can be easily deformed, so that it becomes easier to follow the wearer's body and wear. It is possible to reduce the discomfort given to the wearer inside.

Further, the pad 1 of the present embodiment includes a squeezed portion E formed in a state where the non-skin side layer 12 and the absorption layer 13 are overlapped. The squeezed portion E is a portion having a higher fiber density than the portion in which the squeezed portion E is not provided. Therefore, during wearing, the excrement that has reached the non-skin side layer 12 can be easily transferred to the absorption layer 13 by the capillary phenomenon in the squeezed portion E, so that the excrement is diffused in the non-skin side layer 12. It reduces fear and makes it easier to maintain the air layer of the non-skin side layer 12.

Further, it is preferable to have a portion where no adhesive is provided between the surface layer 11 of the pad 1 and the non-skin side layer 12. When a soft fibrous material is used for the surface layer 11 and the non-skin side layer 12 as in the pad 1, hot melt over the entire area between the surface layer 11 and the non-skin side layer 12. When an adhesive such as an adhesive is applied and adhered, the adhesive may be provided in a wide range in the non-skin side layer 12 and the air layer in the non-skin side layer 12 may be narrowed. Further, when an adhesive such as a hot melt adhesive is applied and adhered over the entire area between the surface layer 11 and the non-skin side layer 12, the space between the surface layer 11 and the non-skin side layer 12 is fixed. Therefore, it becomes difficult to form an air layer. Therefore, by having a portion where the adhesive is not provided between the surface layer 11 and the non-skin side layer 12 of the pad 1, the non-skin side layer 12 may be narrowed by the adhesive and the surface layer 12 and the non-skin side layer 12 and the non-skin side layer 12 may be narrowed. By reducing the possibility of being fixed between the side layer 12 and the non-skin side layer 12, it becomes easy to make the non-skin side layer 12 an air layer containing more air.

As a configuration having a portion where no adhesive is provided between the surface layer 11 of the pad 1 and the non-skin side layer 12, for example, the following method can be realized.
In the manufacturing process, a region to which the adhesive is not applied may be provided between the surface layer 11 and the non-skin side layer 12. Further, after applying the adhesive to substantially the entire area between the surface layer 11 and the non-skin side layer 12, a penetration portion such as a slit that penetrates the surface layer 11 and the non-skin side layer 12 in the thickness direction is provided. By increasing the number of voids, the air layer of the non-skin side layer 12 may be easily contained with air. By forming the non-skin side layer 12 containing hydrophobic fibers (plastic fibers such as polyethylene terephthalate), the adhesive does not easily penetrate into the non-skin side layer 12 containing hydrophobic fibers having low liquid compatibility, so that the adhesive is adhered. It becomes easier to provide a portion where the agent is not provided.

It is preferable to have a portion where no adhesive is provided between the absorption layer 13 provided on the non-skin side of the non-skin side layer 12 and the non-skin side layer 12. When a soft fibrous material is used for the absorption layer 13 and the non-skin side layer 12, an adhesive such as a hot melt adhesive covers the entire area between the absorption layer 13 and the non-skin side layer 12. When the adhesive is applied and adhered, the adhesive may be provided in a wide range in the non-skin side layer 12, and the air layer in the non-skin side layer 12 may be narrowed. Therefore, by having a portion where the adhesive is not provided between the absorption layer 13 of the pad 1 and the non-skin side layer 12, the possibility that the non-skin side layer 12 is narrowed by the adhesive is reduced, and the non-skin side layer 12 is not provided. It becomes easy to make the side layer 12 an air layer containing more air. As a method of providing a portion where no adhesive is provided between the absorption layer 13 of the pad 1 and the non-skin side layer 12, no adhesive is provided between the surface layer 11 and the non-skin side layer 12. It can be realized by the same method as the configuration having a part.

=== Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the interpretation of the present invention. Further, it is needless to say that the present invention can be changed or improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

1 Interlabial pad (pad, absorbent article),
11 Surface layer (skin side adjacent layer),
12 Non-skin side layer,
12s slit (non-skin side layer low basis weight),
13 Absorption layer (non-skin side adjacent layer),
131 Skin side sheet,
132 Absorbent core,
133 Non-skin side sheet,
13s slit (absorbent layer low basis weight),
14 Back layer,
15 Finger insertion sheet (sheet for forming a finger insertion part),
20 finger insertion part,
E squeezing department,
F fold line,
X part (central part of absorption layer)

Claims (17)

It has a front-back direction, a width direction, and a thickness direction.
Has an absorbent layer that absorbs liquids
An absorbent article that abuts on the wearer in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction.
In the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the central portion in the width direction when viewed in the thickness direction is defined as the central portion of the absorbent layer.
In a bent state in which the non-skin sides are bent toward the non-skin side along the front-rear direction so that the non-skin sides are in contact with each other, 4 cc of distilled water is dropped on the skin side in the center of the absorption layer, and the mixture is left for 60 seconds. In the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-back direction is along the vertical direction of the beaker, and the water surface in the beaker. With respect to the absorbent article fixed at a height of 10 cm from the other end in the front-rear direction of the absorbent article, the absorbent article is placed in the beaker one minute after the fixing is released. Absorbent article characterized by not touching the bottom of the. It has a front-back direction, a width direction, and a thickness direction.
Has an absorbent layer that absorbs liquids
An absorbent article that abuts on the wearer in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction.
In the absorbent article, the central portion of the absorbent layer in the anteroposterior direction and the central portion in the width direction when viewed in the thickness direction is defined as the central portion of the absorbent layer.
In a bent state in which the non-skin sides are bent toward the non-skin side along the front-rear direction so that the non-skin sides are in contact with each other, 4 cc of distilled water is dropped on the skin side in the center of the absorption layer, and the mixture is left for 60 seconds. In the upper part of the beaker for 2L containing 2L of distilled water, one end of the absorbent article in the front-rear direction is on the upper side, and the front-back direction is along the vertical direction of the beaker, and the water surface in the beaker. With respect to the absorbent article fixed at a height of 10 cm from the other end in the front-rear direction of the absorbent article, at least a part of the absorbent article is contained in the beaker after the fixation is released. The time to touch the bottom is time T1
After being in the bent state and left for 60 seconds without dripping distilled water, the beaker is placed in the upper part of the beaker containing 2 L of distilled water, with one end of the absorbent article on the upper side and the front-back direction of the beaker. With respect to the absorbent article fixed at a height of 10 cm between the water surface in the beaker and the other end of the absorbent article along the vertical direction of the beaker, the absorbent article is released from the fixation and then the absorbent article is released. When the time until at least a part of the article touches the bottom in the beaker is time T2.
An absorbent article characterized in that the time T1 is longer than the time T2. It has a front-back direction, a width direction, and a thickness direction.
An absorbent article that abuts on the wearer in a state of being bent toward the non-skin side along the front-back direction at the central portion in the width direction.
A surface layer that can come into contact with the wearer's skin,
It has a non-skin side layer provided on the non-skin side of the surface layer, and has.
An absorbent article characterized in that the liquid diffusibility of the skin-side adjacent layer adjacent to the non-skin-side layer from the skin side is higher than the liquid diffusivity of the non-skin-side layer. The absorbent article according to claim 3.
An absorbent article characterized in that the skin-side adjacent layer is the surface layer. The absorbent article according to claim 3 or 4.
It has a non-skin side adjacent layer adjacent to the non-skin side layer from the non-skin side.
An absorbent article characterized in that the liquid diffusibility of the non-skin side adjacent layer is higher than the liquid diffusivity of the non-skin side layer. The absorbent article according to claim 5.
An absorption layer that absorbs liquid is provided on the non-skin side of the non-skin side layer.
An absorbent article, wherein the non-skin side adjacent layer is the absorbent layer. The absorbent article according to any one of claims 3 to 6.
An absorption layer that absorbs liquid is provided on the non-skin side of the non-skin side layer.
In the central part in the width direction, in a state of being bent toward the non-skin side along the front-back direction.
In the central portion of the absorption layer in the anteroposterior direction, the density of the fibers of the non-skin side layer in the central portion in the width direction is higher than the density of the fibers of the non-skin side layer in the end portion in the width direction. A characteristic absorbent article. The absorbent article according to any one of claims 3 to 7.
An absorption layer that absorbs liquid is provided on the non-skin side of the non-skin side layer.
In the central portion of the absorption layer in the anteroposterior direction
The length in the thickness direction from the skin side surface of the surface layer to the skin side surface of the absorption layer in the central portion of the absorption layer in the width direction is
An absorbent article characterized in that it is shorter than the length in the thickness direction from the skin side surface of the surface layer to the skin side surface of the absorption layer at the end portion in the width direction of the absorption layer. The absorbent article according to any one of claims 3 to 8.
An absorption layer that absorbs liquid is provided on the non-skin side of the non-skin side layer.
The absorption layer has an absorption layer low basis weight portion in which the basis weight of the fiber is lower than that of the surroundings.
An absorbent article characterized in that the absorption layer low basis weight portion is provided in at least a part of the central portion in the width direction of the absorption layer. The absorbent article according to any one of claims 3 to 9.
The non-skin side layer has a low basis weight portion of the non-skin side layer having a lower basis weight of fibers than the surroundings.
An absorbent article characterized in that the non-skin side layer low basis weight portion is provided in at least a part of the central portion in the width direction of the non-skin side layer. The absorbent article according to any one of claims 3 to 10.
An absorbent article characterized by having a portion not provided with an adhesive between the surface layer and the non-skin side layer. The absorbent article according to any one of claims 3 to 11.
An absorption layer that absorbs liquid is provided on the non-skin side of the non-skin side layer.
An absorbent article characterized by having a portion not provided with an adhesive between the non-skin side layer and the absorbent layer. The absorbent article according to any one of claims 1 to 12.
An absorbent article characterized in that the non-skin side surface of the absorbent article does not have a finger insertion portion into which a finger can be inserted. The absorbent article according to any one of claims 1 to 12.
An absorbent article characterized by having a finger insertion portion capable of inserting a finger on the non-skin side surface of the absorbent article. The absorbent article according to claim 14.
An absorbent article characterized in that a water-repellent member is used for at least a part of a sheet for forming the finger insertion portion. The absorbent article according to any one of claims 1 to 15.
An absorbent article characterized in that a water-repellent member is provided at least a part of a portion visible from the non-skin side surface of the absorbent article. The absorbent article according to any one of claims 1 to 14.
The absorbent article is characterized in that it does not have a water-repellent member.

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