JP7309434B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles.

In the case of men, as they age, slight urine leakage (eg, leakage of several drops to 10 mL) may occur unconsciously, including after urination. In order to deal with such urine leakage, absorbent articles for men have been proposed. However, men's restrooms generally do not have trash cans for disposal of absorbent articles. Therefore, there have been proposed water-disintegratable absorbent articles that can be flushed into a flush toilet after being replaced in a men's restroom (for example, Patent Documents 1 to 3).

Patent Documents 1 to 3 describe the use of films and fiber sheets made of a water-soluble polyvinyl alcohol (hereinafter also referred to as PVA) component. In addition, a spunlaced nonwoven fabric is mentioned as a water-decomposable material, and the use of an adhesive or a pressure-sensitive adhesive containing a PVA component for joining members or fixing an absorbent article and underwear is described.
On the other hand, Patent Document 4 describes a three-pronged absorbent article for men. This men's absorbent article is used by attaching it to underwear with an anti-slip adhesive layer. The top sheet and the back sheet constituting the article are made of a synthetic fiber sheet or a plastic sheet, and the outer edges of both sheets are joined by an adhesive such as hot melt. However, the absorbent article for men described in Patent Document 4 is not intended to be flushed down a flush toilet.

JP 2018-86087 A JP 2017-213073 A JP 2012-71057 A JP 2015-58195 A

There is room for improvement in the water disintegrability in order to finely decompose the absorbent article incorporating the above PVA component or spunlace nonwoven fabric with the water flow in a flush toilet. In particular, a part coated with an adhesive or a pressure-sensitive adhesive tends to be hindered in its water-decomposability, and it tends to take a long time to be finely decomposed. Therefore, there is a demand for an absorbent article that quickly decomposes (dissolves) in water when flushed in a flush toilet.

SUMMARY OF THE INVENTION In view of the above points, the present invention relates to an absorbent article that absorbs leakage of urine from men and that easily decomposes (dissolves) in water when flushed in a flush toilet after use.

The present invention comprises an absorbent body having a front surface and a back surface, and a fixing tab protruding from the back surface side, the constituent members of the absorbent main body and the fixing tab are made of a water-decomposable material, and the back surface is repellent. To provide an absorbent article having aqueous properties.

The absorbent article of the present invention absorbs urine leakage from men, and is easily hydrolyzed (dissolved) when flushed in a flush toilet after use.

(A) is a partially cutaway plan view schematically showing a urine pad as a preferred embodiment of the absorbent article of the present invention from the surface side, and (B) is the back surface of the urine pad shown in (A). FIG. 4 is a plan view schematically shown from the side; 2 is a cross-sectional view of the urine pad shown in FIG. 1 taken along line II. FIG. Fig. 10 is a cross-sectional view showing a mode in which an absorbent main body is provided with an absorbent layer between a layer forming a front surface and a layer forming a back surface; 1. It is explanatory drawing which showed typically the state which mounted|worn the urine pad shown in FIG. 1 with the underwear. As a preferred specific example of the member configuration of the fixing tab, (A) is a perspective view showing a single-layer fixing tab, and (B) is a two-layer fixing tab in which the upper and lower ends are integrally deformed. FIG. 2C is a perspective view showing a fixing tab formed into a cylindrical shape by fixing with a part, and FIG. Fig. 10 is a perspective view of a locking tab adapted to be attached; (A) is a front view schematically showing a fixing tab which is composed of a laminated structure of multiple layers and which is joined on the lower side, and an absorbent main body having a notch at a position where the fixing tab is arranged. , (B) is a partially enlarged perspective view of the fixing tab; (A) is an end view schematically showing one embodiment (first embodiment) in which the absorbent main body and the fixing tab are made of the same member, with respect to the constituent members of the urine pad shown in FIG. (B) schematically shows another embodiment (second embodiment) in which the absorbent main body and the fixing tab are made of the same member for the constituent members of the urine pad shown in FIG. is an end view. 7A is an end view schematically showing an embodiment (third embodiment) in which an absorbent main body and a fixing tab are separately formed in the urine pad constituent members shown in FIG. 6; FIG. , (B) is an end view schematically showing another embodiment (fourth embodiment) in which the absorbent main body and the fixing tab are separately formed with respect to the constituent members of the urine pad shown in FIG. It is a diagram. (A) and (B) are explanatory diagrams schematically showing the method for manufacturing the urine pad of the first embodiment shown in FIG. 7(A). (A) to (C) are explanatory diagrams schematically showing a preferred embodiment different from that of FIG. 9 as the method for manufacturing the urine pad of the first embodiment shown in FIG. 7(A). (B) indicates the skin surface side, and (C) indicates the non-skin surface side. (A) and (B) are explanatory views schematically showing the manufacturing method of the urine pad of the third embodiment shown in FIG. 8, and (C) and (D) are (A) and (B). and FIG. 8 is an explanatory diagram schematically showing another preferred embodiment.

Hereinafter, a male urine pad as a preferred embodiment of the absorbent article of the present invention will be described with reference to the drawings.

In the present invention, the side that comes into contact with the human body is referred to as the skin side, the skin contact side, or the front side, and the opposite side is referred to as the non-skin side, the non-skin contact side, or the back side. These terms are also used as terms that indicate relative positional relationships in the member structure of the absorbent article, even for members that do not have a surface that contacts the human body. In addition, the direction located on the front side of the human body when worn is referred to as the front, and the direction located on the rear side is referred to as the rear. Furthermore, the direction along the length direction of the wearer is called the vertical direction, and the relative positional relationship in the vertical direction is called the upper side or the lower side, with the wearer's head side being the upper side.

As shown in FIGS. 1A and 1B, a male urine pad 10 (hereinafter also referred to as urine pad 10) of the present embodiment includes an absorbent main body 11 and urine pad 10 which are combined into male underwear (hereinafter also referred to as urine pad 10). , or simply called underwear). The absorbent body 11 has a front side 1 and a back side 2 . The urine pad 10 is used by placing it between the wearer's lower abdomen and men's underwear. side).

The components of urine pad 10, including absorbent body 11 and fastening tabs 12, are made of a water-disintegratable material.
The term "water disintegratability" as used in the present invention refers to the ability of a disaggregated material to pass through 4 meshes (5 mm opening) according to the following test method for toilet paper in JIS P 4501 (testing method for water disintegrability). As the water-decomposable material used in the present invention, various materials that satisfy the above test requirements can be used. Examples include paper materials. The urine pad 10 is made of a water-decomposable material, so that it can be quickly dissolved in water when flushed in a flush toilet.
The term "paper material" as used in the present invention refers not to synthetic fibers, but to a material obtained by making pulp into paper and integrating it into a sheet by hydrogen bonding. Hydrogen bonds between the pulps of such a paper material are easily dissolved by water flow in a flush toilet or the like, and the paper material exhibits higher water disintegration than non-woven fabric. In addition to pulp, fillers such as talc, paper strength agents such as starch, and agents for preventing ink bleeding such as sizing agents may be used as raw materials for paper used in the paper material. In calligraphy, these agents are included in the paper stock.

(Test method for the presence or absence of water disintegrability)
It can be determined according to JIS P 4501 whether or not the constituent member has water decomposability. Specifically, it is as follows.
First, 300 mL of water is put into a beaker with a capacity of 300 mL, and the temperature is adjusted to 20°C. A disk-shaped rotor with a diameter of 35 mm and a thickness of 12 mm is used to stir water at a rotation speed of 600 rpm. A component cut into a size of 10 cm long by 10 cm wide is put in there. The rotational speed temporarily decreases due to the resistance of the constituent members, but the rotational speed increases as the constituent members melt. Stop rotation when the number of revolutions reaches 540 rpm. At this time, if the dissolved component can pass through 4 meshes (5 mm opening), it is determined that the component has water decomposability, and if not, it is determined that the component does not have water decomposability.
It should be noted that whether or not the absorbent article as a whole has water decomposability can also be determined by a method similar to the above evaluation method.

In this embodiment, as shown in FIG. and the layers forming the back surface 2 are each made of paper material. These layers of paper material absorb urine, and the urine pad 10 serves as an absorbent article.
Since the paper material is a member formed into a sheet by hydrogen bonding, when it comes into contact with water in a flush toilet or the like, the hydrogen bonding weakens and the paper dissolves (dissolves) in water. That is, by using such water-decomposable paper materials for the front and back surfaces, the absorbent article is water-decomposed (dissolved) when flushed in a flush toilet.

The paper material used for the layer forming the surface 1 and the layer forming the back surface 2 is preferably smooth to the touch from the viewpoint of improving the wearing comfort. Moreover, from the viewpoint of ensuring liquid absorption, it is preferable to have a certain degree of durability. Furthermore, from the viewpoint of effectively exerting the effect of the water repellent, it is preferable that the mesh is tightly closed. The paper material used for the layer forming the front surface 1 and the paper material used for the layer forming the back surface 2 may be the same or different.

The back surface 2 has water repellency. Water repellency is the property of repelling water. In this specification, when the contact angle between a substance and a water droplet is 90° or more, the substance is said to have water repellency.
In this embodiment in which the layer forming the front surface 1 and the layer forming the back surface 2 are laminated, at least one surface of the layer forming the back surface 2 has water repellency. As a result, it is possible to prevent oozing of urine to the non-skin surface side (bleed-through), and contamination of the underwear can be prevented. Water repellency may be imparted to either the skin surface side or the non-skin surface side of the layer forming the back surface 2, but the oozing out of urine to the non-skin surface side (bleed-through) is effectively prevented. It is preferable to impart water repellency to the surface on the non-skin surface side from the viewpoint of As a method for imparting water repellency, water repellent treatment may be given. As the water-repellent treatment, a coating solution containing a water-repellent agent (water-repellent oil agent) is usually applied to the surface to be treated.

The absorbent body 11 is not limited to the two-layered structure of the layer forming the front surface 1 and the layer forming the back surface 2 shown in FIG. 2, and may have a laminated structure of three or more layers.
For example, the absorbent body 11 may have an absorbent layer 3 between the layer forming the front surface 1 and the layer forming the back surface 2, as shown in FIG. Due to the presence of the absorbent layer 3, the urine pad 10 can absorb more urine, and it is possible to suppress urine seepage (through-out) to the non-skin surface side.
The absorbent layer 3 preferably has a structure in which a plurality of sheets of paper material are laminated. In such an absorbent layer 3, the urine absorption capacity can be increased. Furthermore, when the urine pad 10 is flushed into a flush toilet, water easily permeates into the space between the laminated sheets of paper material, and the water disintegrability of the urine pad 10 can be ensured. In other words, both urine absorption capacity and water disintegrability can be achieved.
Absorbent sheets (sheets in which an absorbent polymer is sandwiched between hydrophilic and water-decomposable sheets) can also be used for the absorbent layer 3 . Alternatively, the absorbent layer 3 may be made of pulp fibers and an absorbent polymer, or may be coated with a water-decomposable sheet. Note that the absorbent polymer determined to have water-disintegratability in the above (testing method for water-disintegratability) is a water-disintegratable material.
More preferably, the absorbent layer 3 includes a sheet of uneven paper material (uneven sheet). Furthermore, it is more preferable to form a laminate in which a plurality of concave-convex sheets are superimposed. As a result, more space can be provided between the sheets in the absorbent layer 3 due to the unevenness, and the water disintegration is further enhanced. Moreover, in the laminated body of the uneven sheet, it is preferable that the convex portions of the sheets are laminated so as to face each other. As a result, a larger space can be secured between the sheets, and the water disintegrability can be further improved. Examples of the uneven sheet include wrinkled crepe paper and embossed paper material. Among them, wrinkled crepe paper is preferable.
It should be noted that the unevenness in the uneven sheet is preferably rough unevenness that can be confirmed with the naked eye from the viewpoint of having sufficient water disintegrability.

As another aspect of the absorbent main body 11, it may have a structure composed of a water-decomposable single-layer sheet with one surface having water repellency (not shown). In this case, the one surface is the back surface 2 and the other surface is the front surface 1 . Moreover, it is preferable that the single-layer sheet is made of the paper material described above.

In the urine pad 10, the constituent members are preferably fixed at the integrally deformable portion 5 at the mutually laminated portions. For example, the integral deformation portion 5 as shown in FIGS. 2 and 3 is formed such that a part of the laminated portion of the layer forming the front surface 1 and the layer forming the back surface 2 made of paper material is integrated with the surrounding continuous plane. It has a structure shifted in the thickness direction. The integral deformation portion 5 is formed by applying mechanical fitting pressure (for example, fitting embossing) to the laminated portion in the thickness direction, and the constituent members are fixed to each other at this portion. More specifically, the protrusions of the other layer are fitted into the recesses of one layer and are pressed and fixed. The fixing is neither bonding using an adhesive nor bonding by heat sealing, but fixing (adhering) by mechanical fitting pressure.
Since the integral deformation portion 5 laminates the layer forming the surface 1 and the layer forming the back surface 2 and presses them to fit, the bonding area between the layers increases, and the layer forming the surface 1 and the back surface 2 are formed. The entanglement between the fibers that make up the layers increases. Therefore, the integrally deformable portion 5 has higher fixing strength than a form in which the front surface 1 and the rear surface 2 are pressed and deformed separately and then the two are fitted together.
It is preferable that the fixation at the integrally deformable portion 5 is water-decomposable. The term "water-disintegratable" has the same meaning as the aforementioned "water-disintegratable".
Note that the integrally deformable portion 5 is not limited to being arranged in the two-layered portion of the layer forming the front surface 1 and the layer forming the back surface 2 shown in FIG. It may be arranged in the laminated portion.

The urine pad 10 does not contain an adhesive, and the constituent members are fixed by the integrally deformable portion 5 . Therefore, the urine pad 10 is improved in water disintegration at the time of disposal. The interval between the integrally deformable portions 5 and the size and depth of the integrally deformable portions 5 are not particularly limited as long as the effect of the present invention is achieved.

The integrally deformable portion 5 is a deformable portion that is deformed by pressing or the like, and has a function of blocking the diffusion of urine. From this point of view, it is preferable that the position of the integrally deformable portion 5 is at least on the peripheral portion of the absorbent main body 11 . By doing so, even if the urine absorbed near the center of the absorbent main body 11 diffuses to the peripheral portion, it is blocked by the integrally deformable portion 5 disposed on the peripheral portion, so that the urine is prevented from reaching the underwear. can be prevented. Furthermore, in a configuration in which the integrally deformable portion 5 is provided only in the peripheral portion of the absorbent main body 11 (a configuration in which the integrally deformable portion 5 is not provided near the center of the absorbent main body 11), urine is absorbed in the vicinity of the center of the absorbent main body 11. is not inhibited.

When the absorbent main body 11 includes the absorbent layer 3 described above, the integrally deformable portion 5 extends the layer forming the front surface 1 and the layer forming the back surface 2 outward from the absorbent layer 3 . It is preferably arranged in the stacked portion. That is, it is preferable that the integrally deformable portion 5 does not include the absorbent layer 3 and is arranged in the laminated portion of the layer forming the front surface 1 and the layer forming the back surface 2 so as to surround the outer periphery of the absorbent layer 3 . In this way, it is possible to prevent the urine absorbed by the absorbent layer 3 from diffusing and leaking out from the side portion of the absorbent main body 11 .

The integrally deformable portion 5 may be arranged on the fixing tab 12 in addition to the absorbent main body 11 . Further, when the fixing tab 12 is formed separately from the absorbent main body 11 and laminated on the absorbent main body 11, the integrally deformable portion 5 may be arranged in the laminated portion.

In the urine pad 10 , the fixing tab 12 is arranged so as to protrude from the back surface 2 side of the absorbent main body 11 . Here, “protruding from the back surface 2 side” refers to a state in which the back surface 2 side of the absorbent main body 10 protrudes to the side opposite to the front surface 1 . The fixing tab 12 may project vertically from the back surface 2 or may project at an angle. In any case, it is preferable that the fixing tab 12 can move left and right around the boundary between the absorbent main body 11 on the back surface 2 side and the fixing tab 12 . 1A and 1B show the fixing tab 12 laid down along the back surface 2. As shown in FIG.

The fixing tab 12 is a member for fixing the urine pad 10 to the underwear, and is folded and inserted into the edge of the underwear, or inserted into an opening of men's underwear, which will be described later, to fix the urine pad 10 to the underwear. . That is, since the urine pad 10 has the fixing tab 12, the urine pad 10 can be fixed to underwear even if it is composed only of a water-decomposable material without using a non-slip material used in conventional absorbent articles.

The fixing tab 12 is preferably an insert into an opening 91 of a men's undergarment 90, as shown in FIG. The opening 91 of the men's undergarment 90 is a portion provided on the front side of the men's undergarment for inserting and removing the male genitalia. Since the fixing tab 12 is inserted into the opening 91 of the men's undergarment 90, the urine pad 10 can be fixed in a region where urine leakage occurs and the undergarment is likely to be contaminated.
In this case, the fixing tab 12 preferably has a size that protrudes outward from the opening 91 when inserted into the opening 91 of the men's undergarment 90 . As a result, the urine pad 10 is more stably fixed to the underwear, and urine is less likely to adhere to the underwear when urinating. For example, if the urine pad 10 does not have a structure for taking out the male genitalia, which will be described later, the underwear is pushed down to take out the male genitalia. At this time, the urine pad 10 is separated from the body, but since the urine pad 10 is fixed by the fixing tab 12, the positions of the urine pad 10 and the opening 91 do not shift. Therefore, residual urine after urination can be absorbed.

The fixing tab 12 may have a single-layer structure (for example, the fixing tab 12A shown in FIG. 5A), or may have a multi-layer laminated structure. A laminated structure of a plurality of layers is preferable because it can increase the rigidity that contributes to the fixability to the underwear. Various modes can be taken as the laminated structure of a plurality of layers. The aforementioned integrally deformable portion 5 may be arranged in a plurality of layers so as not to separate during use. For example, like a fixing tab 12B shown in FIG. 5(B), the upper part and the lower part may be fixed by an integrally deforming part 5 to form a cylindrical shape.

Moreover, when the fixing tab 12 has a laminated structure of a plurality of layers, each layer constituting the plurality of layers may be integrated with each other on the lower side. "Integrated" means that opening and closing between the laminated layers are constrained and closed. For example, each layer of the fixing tab 12 is fixed by the integrally deforming portion 5 on the lower side (FIG. 5C), or each layer of the fixing tab 12 is integrally bent on the lower side, and the lower side Any non-fixed regions (not shown) are included in the concept of "integration". Such a fixing tab 12 can open the laminated layers on the upper side with the lower side as an axis.

When using the fixing tab 12 shown in FIG. 5C, as shown in FIGS. , the notches 16 and between the layers of the securing tabs 12 are preferably open together.
According to such a configuration, when the fixing tab 12 and the notch 16 of the absorbent body 11 are opened, a V-shaped groove 15 is formed. For example, when the fixing tab 12 is inserted into the opening 91 of the men's underwear 90 to fix the urine pad 10, even if the fixing tab 12 and the notch 16 of the absorbent main body 11 are closed, during urination, It is sufficient if the fixing tab 12 and the notch 16 of the absorbent body 11 can be opened to form the V-shaped groove 15 . When urinating, the lower side of the V-shaped groove 15 is closed to form a passage for the male genitalia, and the male genitalia can be taken in and out through the opening 91 without soiling the underwear. Urinary leakage is particularly likely to occur when the male genitalia is retracted into the underwear after urination. can be effectively absorbed.

The male genitalia extracting structure of the urine pad 10 means that the fixing tab 12 having a multi-layer laminated structure is not fixed to each other at least at the center in the vertical direction (the fixing tab 12 is configured Each layer is not integrated), the absorbent body 11 has cuts 16 at positions where the fixing tabs 12 are arranged, and the cuts 16 and the layers of the fixing tabs 12 are both open. That is, both the tubular structure as shown in FIG. 5B and the structure having the V-shaped groove 15 as shown in FIG. 5C are included in the male genitalia ejection structure. If the fixing tab 12 has a structure for taking out male genitalia, the wearer can urinate without taking down his pants.
When the fixing tab 12 has a structure for taking out the male genitalia, the upper end of the notch 16 is aligned with the upper end of the fixing tab 12 or is higher than the upper end of the fixing tab 12. Preferably. That is, the upper end of the notch 16 preferably contacts the upper end of the locking tab 12 or exceeds the upper end of the locking tab 12 . When the upper end of the notch 16 is at such a position, the upper side of the fixing tab 12 can be easily opened when the fixing tab 12 has a V-shaped groove 15 as shown in FIG. 5(C). It becomes easier to put in and take out the male genitalia. Moreover, when the upper end of the cut 16 is located above the upper end of the fixing tab 12 , it is preferable that the upper end of the absorbent main body 11 reaches the upper end.

The fixing tab 12 may be formed integrally with the absorbent main body 11 or may be formed separately from the absorbent main body 11 and attached to the absorbent main body 11 . When formed separately, the fixing tab 12 may be made of the same member as (one of) the members forming the absorbent main body 11, or may be made of a different member. may be For example, depending on the laminated structure of the absorbent body 11, the fixing tab 12 may have a laminated structure of a layer forming the front surface 1 and a layer forming the back surface 2, or a layer forming the front surface 1, the absorbent layer 3 and the rear surface 2. It may have a laminated structure of layers forming a As a result, the absorbability of the urine in the fixing tab 12 is increased, and the user can perform actions after urinating without soiling the underwear.
As will be described later, the fixing tab 12 may be formed separately from the absorbent main body 11 from the viewpoint of simplifying the manufacturing process without cutting or folding the material during the manufacturing process.
Preferred embodiments of the case where the fixing tab 12 and the absorbent main body 11 are made of the same member and the case where the fixing tab 12 and the absorbent main body 11 are formed separately will be described below with reference to the drawings. explain.

FIG. 7(A) shows a urine pad 10 (first embodiment) made of the same material as the absorbent main body 11 in that the fixing tab 12 is composed of a layer forming the front surface 1 and a layer forming the back surface 2. ). The fixing tab 12 and the absorbent body 11 are formed from the same continuous sheet member. It is preferable that the layer forming the front surface 1 and the layer forming the back surface 2 are also fixed in the fixing tab 12 in the vicinity of the boundary between the fixing tab 12 and the absorbent main body 11 by the integral deformation portion 5 (not shown). figure). By doing so, it is possible to prevent the layer forming the front surface 1 and the layer forming the back surface 2 of the fixing tab 12 from peeling off during wearing or urination (FIG. 7A). In the case of the first embodiment, the male genitalia can be put in and taken out from between the layers forming the surface 1 constituting the inner side of the fixing tab 12, and urine can be removed when the male genitalia is accommodated inside the underwear after urinating. Leakage can be absorbed by the inner surface of the locking tabs 12 .
FIG. 7(B) shows a urine pad 10 (second embodiment) made of the same material as the absorbent main body 11 because the fixing tab 12 consists only of a layer forming the back surface 2 (two-layer laminated structure). mode). In the layer forming the back surface 2, it is preferable that the fixing tab 12 is fixed near the boundary between the fixing tab 12 and the absorbent main body 11 by the integral deformation portion 5 (not shown). If a cut is provided in the layer forming the surface 1 so as to match the position of the fixing tab 12, the male genitalia can be put in and taken out from between the layers forming the fixing tab 12, and the male genitalia can be removed from the underwear after urination. The fixing tab 12 can prevent leakage of urine when stored inside. As described above, since the layer forming the back surface 2 has water repellency, in the second embodiment, the layer forming the back surface 2 forms the fixing tab 12, so that the portion of the fixing tab 12 is removed. It can prevent urine from seeping into underwear. In addition, as compared with the form shown in FIG. 7A, the fixing tab 12 does not have a layer forming the surface 1, so the thickness can be reduced, and the manufacturing cost can be reduced.
In addition, when the absorbent body 11 has an absorbent layer 3 in addition to the layer forming the front surface 1 and the layer forming the back surface 2, both the first embodiment and the second embodiment prevent complication of the manufacturing process. In view of this, the fixing tab 12 may include the absorbent layer 3 .

FIG. 8 shows a mode in which the fixing tab 12 is formed separately from the absorbent main body 11 . As noted above, the member(s) making up the fastening tab 12 and (one of) the members making up the absorbent body may be the same or different.
FIG. 8(A) shows that the fixing tab 12 is composed of a separate body 4 different from the constituent members of the absorbent main body 11, and the separate body 4 is between the layer forming the front surface 1 and the layer forming the back surface 2. A sandwiched urine pad 10 (third embodiment) is shown. In such an embodiment, a cut is provided in the layer forming the back surface 2, the separate body 4 is sandwiched between the layer forming the front surface 1 and the layer forming the back surface 2, and the separate body 4 is moved from the cut to the non-skin surface side. It is a protruding configuration. Further, the layer forming the front surface 1, the separate body 4, and the layer forming the back surface 2 are fixed by the integral deformation portion 5. As shown in FIG. In a third embodiment, if the layers forming the surface 1 are notched to coincide with the positions of the fastening tabs 12, the separate body 4 has male genitalia as shown in FIGS. 5(B) and (C). A take-out structure is formed so that the male genitalia can be put in and taken out.
FIG. 8(B) shows a urine pad 10 (fourth embodiment) in which a fixing tab 12 composed of a separate body 4 is attached to the non-skin side of the layer forming the back surface 2 . In this embodiment, the separate body 4 is fixed to the layer forming the front surface 1 and the layer forming the back surface 2 by the integrally deformable portion 5 . In the fourth embodiment, if cuts are provided in the layer forming the front surface 1 and the layer forming the back surface 2 so as to match the positions of the fixing tabs 12, the separate body 4 can be formed as shown in FIGS. A male genitalia extracting structure as shown in 1 is formed, and the male genitalia can be taken in and out.
In both the third embodiment and the fourth embodiment, from the viewpoint of increasing the strength of the fixing tab 12, the separate body 4 composed of two or more layers is provided at the boundary between the absorbent main body 11 and the fixing tab 12 and the lower part. It is preferable that it is fixed by the integral deformation part 5 at the side. Among others, it is more preferable that the absorbent main body 11 and the fixing tab 12 are fixed at the integrally deformed portion 5 of the laminated portion. Moreover, in both the third embodiment and the fourth embodiment, the separate body 4 is made of a water-decomposable material, and more preferably a material having water repellency. The water-decomposable material, which is the material of the separate body 4, may be the same as or different from the material of the absorbent main body 11. As shown in FIG.

In the urine pad 10, the shape of the absorbent main body 11 is not particularly limited as long as the effects of the present invention are achieved. However, as shown in FIGS. 1(A) and 1(B), it is preferable to have a shape that tapers toward the lower side when viewed from the non-skin surface side or the skin surface side. Such a shape enhances the wearing stability when the urine pad 10 is worn.
The size of the absorbent main body 11 is appropriately set within a range in which the area where the male genitalia are arranged can be covered and urine can be prevented from adhering to the male underwear. For example, the vertical length of the absorbent body 11 is preferably 100 mm or more, more preferably 120 mm or more, still more preferably 130 mm or more, and preferably 200 mm or less, more preferably 180 mm or less, and even more preferably 170 mm or less. The length in the width direction of the absorbent body 11 is preferably 80 mm or more, more preferably 100 mm or more, still more preferably 120 mm or more, and preferably 200 mm or less, more preferably 170 mm or less, and even more preferably 150 mm or less. For example, an absorbent main body 11 having a size of 150 mm×130 mm can be preferably used.

In addition, in the urine pad 10, the vertical length of the fixing tab 12 is preferably 30 mm or more, more preferably 40 mm or more, and even more preferably 50 mm or more, from the viewpoint of stability when inserting the opening 91 of the underwear. Moreover, it is preferably 100 mm or less, more preferably 90 mm or less, and even more preferably 80 mm or less. In addition, the length by which the fixing tab 12 protrudes from the back surface 2 side is preferably 50 mm or more, more preferably 60 mm or more, and further preferably 70 mm or more, from the viewpoint of stability and ease of handling when inserting the opening 91 of the underwear. It is preferably 130 mm or less, more preferably 110 mm or less, and even more preferably 100 mm or less. The length of the fixing tab 12 in the vertical direction and the length protruding from the back surface 2 side are appropriately set according to the size of the opening 91 of the underwear. For example, when the width of the opening 91 of the underwear is 110 mm, the vertical length of the fixing tab 12 is preferably 60 mm. Moreover, when the depth of the opening 91 of the underwear is 80 mm, the length of the fixing tab 12 protruding from the back surface 2 side is preferably 90 mm.
Furthermore, the arrangement position of the fixing tab 12 is preferably in the range of 0 mm or more and 100 mm or less from the top of the absorbent main body 11 from the viewpoint of making it easy to take out the male genitalia through the fixing tab 12, and 0 mm or more and 90 mm or less. more preferably in the range of 0 mm or more and 80 mm or less. In particular, when the fixing tab 12 has a multi-layer laminated structure in which only the lower side is joined as shown in FIGS. It is preferable that the fixing tabs 12 and the upper part of the absorbent main body 11 are aligned with each other.

Next, an example of a method for manufacturing the urine pad 10 will be described with reference to the drawings.
FIGS. 9A and 9B show an example of a method of manufacturing the urine pad 10 of the first embodiment by folding one laminated sheet. In addition, in FIG.9(A) and (B), the surface 1 side is made into the table|surface, and is shown.
First, a layer forming the front surface 1 and a layer forming the back surface 2 are overlapped and cut into a trapezoidal shape, and an integrally deformed portion 5 is formed in the periphery to form a layer forming the front surface 1 and a layer forming the back surface 2. They are pressed and fixed to produce one laminated sheet 100 .
After that, in the center in the width direction, a cut line S is provided on the upper side and a notch portion K is provided on the lower side (FIG. 9A). In providing the cutout portion K, an ear portion X that forms an overlapping portion, which will be described later, is left. The laminated sheet 100 is valley-folded at the center in the width direction to 180°, and further mountain-folded along folding lines L1 and L2 to be folded back 90°. The folded portions 101 and 102 on the upper side of the notch portion K are overlapped, and the lower portions are press-fixed by the integral deformation portion 5 to form the fixing tab 12 . On the other hand, when the fixing tabs 12 are formed, the laminated sheets 100 on both sides in the width direction of the cutout portion K are partially overlapped (overlapped at the ear portions X), and the overlapping portions are pressed and fixed by the integrally deforming portion 5. to form the absorbent body 11 . As a result, the urine pad 10 in which the absorbent main body 11 and the fixing tab 12 are formed from the same material is manufactured (FIG. 9(B)).

Also, FIGS. 10A to 10C show a manufacturing method of a further embodiment different from the embodiment shown in FIGS. 9A and 9B. The laminate sheet 100 on the upper side is partially cut away. In the urine pad 10 manufactured in this way, even if the fixing tab 12 is in the center in the vertical direction, the notch reaches the upper side of the absorbent body, so that the male genitalia can be easily taken out and the absorption is made up to the upper side of the fixing tab 12. Since there is the elastic body 11, an increase in absorption capacity can be expected.

In the manufacturing method shown in FIGS. 9(A) and (B) and FIGS. 10(A) to (C), a region M in which no cut line is inserted between the cut line S in the vertical direction and the notch portion K leaving Thereby, the fixing tab 12 can be stably formed. The length of the region M in the vertical direction is 5 mm or more from the viewpoint of stably forming the integrally deformable portion 5 in the region that becomes the fixing tab 12 and from the viewpoint of ensuring the sheet strength necessary for the process of forming the fixing tab 12. Preferably. The upper limit is preferably 80 mm or less, and from the viewpoint of properly forming the V-shaped groove 15 of the fixing tab 12 and the notch 16 of the absorbent main body 11, which serves as the entrance and exit of the male genitalia, by the integrally deformable portion 5, it is 50 mm or less. is more preferable, and 20 mm or less is even more preferable.

FIGS. 11A to 11D show a method of forming the fixing tab 12 from a separate body 4 different from the absorbent main body 11 to manufacture the urine pad 10 of the third embodiment. Specifically, the separate body 4 is folded so that the fixing tab 12 protrudes to a predetermined length. This is combined with the layer forming the back surface 2 so that the fixing tab 12 protrudes from the cut line 21 of the layer forming the back surface 2, and the layer forming the surface 1 and the layer forming the back surface 2 are separated. Insert 4. Here, the cut line 21 in FIG. 11A is formed to reach the top of the layer forming the back surface 2 . Also, the fixing tab 12 is joined to the absorbent main body 11 by aligning the upper part thereof. The cut line 21 in FIG. 11C is formed in the vertical center of the layer forming the back surface 2 , and the fixing tab 12 is arranged in the vertical center of the absorbent main body 11 .
Next, the integrally deformed portion 5 is formed on the peripheral portion of the overlapping portion of the layer forming the front surface 1, the layer forming the back surface 2, and the separate body 4, and the peripheral portion of the absorbent main body 11, and each constituent member is formed. fixed. As a result, the urine pad 10 in which the absorbent main body 11 and the fixing tab 12 are separately formed is manufactured. In addition, by appropriately designing the order of stacking the layer forming the front surface 1 and the layer forming the back surface 2, how to insert the cut line, and the location where the integrally deformed portion 5 is formed, etc., the urine of other embodiments Pad 10 can be similarly manufactured.

The absorbent article of the present invention is not limited to the urine pad 10 embodiment described above. It is applied to various forms that absorb excretions such as urine.

Reference Signs List 1 front surface 2 back surface 3 absorbent layer 4 separate body 5 integrated deformation portion 10 male urine pad 11 absorbent main body 12, 12A, 12B, 12C fixing tab 15 V-shaped groove 16 notch (of absorbent main body)

Claims (7)

The absorbent body comprises an absorbent body having a front surface and a back surface, and a fixing tab projecting from the back surface side, wherein the constituent members of the absorbent main body and the fixing tab are made of a water-decomposable material, and the back surface is water-repellent. and
The fixing tab has a laminated structure of a plurality of layers, the layers constituting the plurality of layers are integrated with each other on the lower side, and the layers constituting the plurality of layers are not fixed to each other at least at the center in the vertical direction. ,
An absorbent article, wherein the absorbent body has a cut at a position where the fixing tab is arranged, and the cut and the interlayer of the fixing tab are both open. The absorbent main body has a layer forming the front surface and a layer forming the back surface, at least the layer forming the front surface and the layer forming the back surface are made of a paper material, and the layer forming the back surface. 2. The absorbent article according to claim 1, wherein at least one surface of the absorbent article has water repellency, and the layer forming the front surface and the layer forming the back surface are fixed at an integrally deformed portion in a laminated portion of each other. . 3. The absorbent article according to claim 1 or 2, wherein the absorbent main body has an absorbent layer between the layer forming the front surface and the layer forming the back surface. 4. The absorbent article of claim 3, wherein said absorbent layer comprises a textured sheet. 2. The absorbent article according to claim 1, wherein said absorbent body comprises a single-layer sheet, and one surface of said single-layer sheet is water-repellent and forms said back surface. The absorbent article according to any one of claims 1 to 5 , wherein said fixing tab is formed separately from said absorbent main body. 7. The absorbent article according to claim 6 , wherein said fixing tab and said absorbent main body are fixed at an integrally deformed portion of a laminated portion of said fixing tab and said absorbent main body.

Images