JP7026654B2 - Absorbent article - Google Patents

Description

The present invention relates to absorbent articles such as menstrual napkins.

In recent years, in absorbent articles such as menstrual napkins, various absorbent articles having predetermined additional functions in addition to basic functions such as absorption performance and good wearing feeling have been studied.

For example, Patent Document 1 discloses an absorbent article having a functional layer containing a functional agent such as a warming agent on the front side in the longitudinal direction corresponding to the lower abdomen of the wearer. According to the absorbent article disclosed in Patent Document 1, a predetermined function (for example, a feeling of warmth) by the functional layer can be imparted to the lower abdomen of the wearer, so that the wearer's menstrual pain is alleviated. It is said that such effects can be expected.

Utility Model Registration No. 3213494

However, in the absorbent article disclosed in Patent Document 1, the adhesive portion for fixing clothes arranged on the non-skin facing surface is not sufficiently arranged in the front side region having the functional layer (functional portion). Therefore, when the absorbent article is worn (that is, when the absorbent article is deformed so as to be curved in the front-rear direction along the wearer's body shape), the wearer may be affected by the floating or waviness of the front region. There is a possibility that a gap is likely to occur between the skin of the absorbent article and the skin-facing surface of the absorbent article, and the function of the functional layer cannot be sufficiently imparted to the lower abdomen of the wearer.

Therefore, an object of the present invention is to provide an absorbent article capable of sufficiently imparting the function of the functional portion to the lower abdomen of the wearer.

One aspect (aspect 1) of the present invention has an anteroposterior direction and a width direction, and both ends of the absorbing portion having an absorber and both ends of the absorbing portion in the width direction extend outward in the width direction, respectively. An absorbent article having a pair of flap portions.
The absorbent article is
The front of the absorbent article from the central axis of the flap portion which is adjacent to the front side of the absorbent portion and has a functional portion including a predetermined functional member and passes through the center of each of the pair of flap portions in the front-rear direction. The anterior region extending to the side end and
It has an anteroposterior length shorter than the anterior-posterior length of the anterior region, and has a posterior region extending from the flap central axis to the posterior end of the absorbent article. ,
The anterior region is a non-skin facing surface in the central portion in the width direction.
An adhesive portion arrangement region in which an adhesive portion for fixing clothes is arranged so as to at least partially overlap the absorber in the thickness direction and extend in the front-rear direction.
It has an adhesive portion non-arranged region adjacent to the front side of the adhesive portion arranged region and in which an adhesive portion for fixing clothes is not arranged.
Further, the adhesive portion-arranged region is the absorbent article having a front-rear direction length longer than the anterior-posterior length of the adhesive portion non-arranged region.

In the absorbent article of the first aspect, the adhesive portion-arranged region in the front side region has a front-rear direction length longer than the anteroposterior length in the adhesive portion non-arranged region, that is, the adhesive portion for fixing clothes is on the front side. Since it is sufficiently arranged in the area, when the absorbent article is worn, the front side area is less likely to be lifted or wavy as in the past, and the wearer's skin and the skin facing surface of the absorbent article are in contact with each other. It is difficult for gaps to be formed between them. As a result, the absorbent article of the first aspect can steadily cover the lower abdomen of the wearer with the anterior region having a long anteroposterior length, and bring the anterior region into close contact with the wearer's skin without gaps. Therefore, the function of the functional portion included in the anterior side region can be sufficiently imparted to the lower abdomen of the wearer.

Further, in another aspect (aspect 2) of the present invention, in the absorbent article of the first aspect, the front side region has a folding shaft for folding the absorbent article in the front-rear direction, and the folding shaft. Does not overlap with the adhesive portion arrangement region in the thickness direction.
In the absorbent article of this embodiment, since the folding axis for folding the absorbent article in the front-rear direction does not overlap with the adhesive portion arrangement region in the thickness direction, the absorbent article is put on the wearer's clothes (for example, underwear). At the time of adhesive fixing, it is possible to prevent the creases and creases formed along the folding axis from being fixed to the wearer's clothes while being attached to the front side region. Thereby, the absorbent article of this embodiment can steadily adhere the front side region to the wearer's skin.

In still another aspect (aspect 3) of the present invention, in the absorbent article of the above aspect 1 or 2, the functional member overlaps with the adhesive portion arrangement region in the thickness direction.
In the absorbent article of this embodiment, since the functional member overlaps the adhesive portion arrangement region in the thickness direction, the portion corresponding to the functional member in the functional portion is adhesively fixed to the wearer's clothing and then absorbed. Since the sex article can be worn, the portion corresponding to the functional member can be more accurately brought into close contact with the wearer's skin.

In yet another aspect (aspect 4) of the present invention, in any of the absorbent articles of aspects 1 to 3, the functional portion is outward in the width direction than each of both ends in the width direction of the absorption portion. It has a pair of wide portions extending to the side, and each of the pair of wide portions has a front side adhesive portion for fixing clothes on the non-skin facing surface.
The absorbent article of this embodiment has a front side adhesive portion in each of the pair of wide portions in the functional portion, so that the functional portion is steadily adhered and fixed to the wearer's clothes and then the absorbent article. Therefore, the functional part can be more reliably brought into close contact with the wearer's skin.

In yet another aspect (aspect 5) of the present invention, in the absorbent article of the above aspect 4, the functional member overlaps with the front side adhesive portion in the thickness direction.
In the absorbent article of this embodiment, the functional member in the functional portion overlaps with the front adhesive portion in the thickness direction, so that the portion corresponding to the functional member in the functional portion is steadily attached to the wearer's clothes. Since the absorbent article can be worn after being adhesively fixed, the portion of the functional portion corresponding to the functional member can be more accurately brought into close contact with the wearer's skin.

In still another aspect (aspect 6) of the present invention, in the absorbent article according to any one of the above aspects 1 to 5, the absorbent portion is an overlapping portion in which the absorbent body and the functional member overlap in the thickness direction. Have.
In the absorbent article of this embodiment, the absorbing portion has the above-mentioned overlapping portion, that is, the functional member of the functional portion extends beyond the boundary portion between the functional portion and the absorbing portion to the absorbing portion. A seam is not formed between the functional part and the absorption part, and it is possible to suppress an unintentional bending of the front side region starting from the seam. Thereby, the absorbent article of this embodiment can more reliably bring the front side region including the functional portion into close contact with the wearer's skin.

In still another aspect (aspect 7) of the present invention, in the absorbent article according to any one of the above aspects 1 to 6, the functional member contains a warming agent as a functional agent component.
In the absorbent article of this embodiment, since the functional member contains a warming agent as a functional agent component, a sufficient warming effect can be imparted to the lower abdomen of the wearer, and various menstrual pain and the like can be imparted. It can contribute to the relief of symptoms.

According to the present invention, it is possible to provide an absorbent article capable of sufficiently imparting the function of the functional portion to the lower abdomen of the wearer.

FIG. 1 is a plan view of the menstrual napkin 1 according to the embodiment of the present invention as viewed from the surface sheet 2 side in the thickness direction _DT in an unfolded state. FIG. 2 is a plan view of the menstrual napkin 1 as viewed from the back surface sheet 3 side in the thickness direction _DT in the unfolded state. FIG. 3 is an end view of a cross section of the menstrual napkin 1 in FIG. 1 along the line III-III. FIG. 4 is a perspective view of an individual package 10 formed by folding a menstrual napkin 1.

Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In the present specification, unless otherwise specified, "an object (for example, an absorbent article) placed on a horizontal plane in an unfolded state is viewed from the upper side in the vertical direction in the thickness direction of the object. "That" is simply called "planar view".

(Various definitions)
In the present specification, "one side in the anterior-posterior direction that is relatively proximal to the wearer's abdomen when the wearer wears the absorbent article in the anterior-posterior direction of the absorbent article" is referred to as "absorption." It is referred to as "the anterior side of the sex article" and is "in the anterior-posterior direction of the absorbent article, relatively distal to the wearer's abdomen when the wearer wears the absorbent article (ie, on the back of the wearer). The other side, which is relatively proximal to the other side, is referred to as the "rear side of the absorbent article".
Further, in the present specification, "an axis located at the center of a vertically long object in the width direction and extending in the front-rear direction" is referred to as "center axis CL in the front- _back direction".
Further, in the present specification, "in the anteroposterior direction of a vertically elongated object, the side relatively proximal to the central portion in the anteroposterior direction" is referred to as "the inward side in the anteroposterior direction", and "the vertically elongated object". In the anterior-posterior direction, the "relatively distal side to the central part in the anterior-posterior direction" is referred to as the "outer side in the anterior-posterior direction". Similarly, "in the width direction of a vertically long object, the side relatively proximal to the center in the width direction" is called "the inward side in the width direction", and "in the width direction of the vertically long object". , The "relatively distal side to the central portion in the width direction" is referred to as the "outer side in the width direction".
Further, in the present specification, unless otherwise specified, in the thickness direction of the absorbent article in the unfolded state, "when the absorbent article is worn, the position is relatively proximal to the wearer's skin surface". The "surface facing the skin" is referred to as the "skin facing surface", and the "surface located relatively distal to the wearer's skin surface when wearing the absorbent article" is referred to as the "non-skin facing surface".

<Absorbable article>
As shown in FIG. 1, the menstrual napkin 1 (an example of the “absorbent article” in the present invention) according to the embodiment of the present invention is viewed in a plan view with respect to the front-rear direction _DL and the width direction D _W. It has a _vertically long _{outer shape} having a Each of (that is, both ends) has a pair of flap portions 6, 6 extending in a substantially trapezoidal shape toward the outward side of the width direction D _W.

In the present invention, the outer shape of the absorbent article is not limited to such an embodiment, and any vertically long shape according to various uses, etc., as long as it is a long shape having a front-back direction and a width direction ( For example, a rectangle, an ellipse, an hourglass, etc.) can be adopted.

Then, in the above-mentioned menstrual napkin 1, as shown in FIG. 1, the front end portion of the menstrual napkin 1 is formed from the flap portion central axis _CW passing through the center portions of the pair of flap portions 6 in the anteroposterior direction. The anterior-posterior region _AF extending to the front and the anterior-posterior length extending from the flap central axis _CW to the posterior end of the menstrual napkin 1 and shorter than the anterior-posterior length of the anterior region _AF . The rear side region _AB and the front side region A _F are adjacent to the front side _DF of the absorption unit 30 in the front-rear direction _DL and include a predetermined functional member 21. It has a functional unit 20.

As shown in FIG. 3, the menstrual napkin 1 has a liquid-permeable surface sheet 2 that forms the skin-facing surface SF of the menstrual _napkin 1 in the thickness direction _DT ; and the non-skin-facing surface of the menstrual napkin 1. _A liquid-impermeable back surface sheet 3 forming the surface SB; a water-absorbing absorber 4 located between these two sheets; and a functional portion 20 located on the front side _DF in the front side region A _F. A functional member 21 located between the front surface sheet 2 and the back surface sheet 3 and containing a warming agent as a functional agent component is provided as a main constituent member.

Further, as shown in FIG. 1, the menstrual napkin 1 includes a pair of side sheets 5 and 5 extending in the front-rear direction _DL at both ends of the width direction _DL , respectively, and further shown in FIG. As described above, on the non _- skin facing surface SB of the back surface sheet 3, it overlaps with the absorber 4 in the thickness direction _DT and _extends from the front side region _AF to the rear side region _AB in the front-rear direction DL. With the adhesive portion 7 for fixing clothes arranged in the form of a _plurality of _strips ; A pair of flap portion fixing adhesive portions 71, 71; a pair of clothes fixing portions arranged at both ends of the width direction _{D W} on the non-skin facing surface SB of the functional portion 20 in the front side region _AF . The front side adhesive portions 72, 72 of the above are provided as constituent members.

Here, as shown in FIG. 2, the adhesive portion 7 for fixing the clothes is arranged at the center of the width direction D _W of the menstrual pad 1, and the menstrual napkin is located at the center of the width direction D _W. An adhesive portion arrangement region extending from the front side region _AF of 1 to the rear side region _AB is formed. Further, as shown in FIG. 2, the adhesive portion arrangement region includes the front adhesive portion arrangement region _A7A extending in the front-rear direction _DL in the central portion of the width direction D _W of the front side region _AF and the rear side. In the central portion of the width direction D _W of the region A _B , it is partitioned into the rear side adhesive portion arrangement region A _7B extending in the front-rear direction _DL .
On the other hand, since the pair of front adhesive portions 72, 72 are arranged at both ends of the width direction D _W , they are adjacent to the front side _DF of the front side adhesive portion arrangement region A _7A in the front side region A _F. No adhesive portion for fixing clothes is arranged in the central portion of the width direction D _W , and an adhesive portion non-arranged region A ₀ as shown in FIG. 2 is formed.

Then, in the above-mentioned menstrual napkin 1, as shown in FIGS. 2 and 3, the adhesive portion arrangement region of the front side region _AF (that is, the front side adhesive portion arrangement region A _7A ) is the adhesive portion non-arrangement region. It has an _{anteroposterior} length longer than the anteroposterior length of A0.
As described above, in the sanitary napkin 1, the front side adhesive portion arrangement region A _7A of the front side region A _F has a front-rear direction length longer than the front-back direction length of the adhesive portion non-arrangement region A ₀ , that is, Since the adhesive portion for fixing clothes is sufficiently arranged in the front side region _AF , when the menstrual napkin 1 is worn, the front side region _AF is less likely to be lifted or wavy as in the past. It is difficult for a gap to be formed between the _wearer 's skin and the skin facing surface SF of the menstrual pad 1. As a result, the menstrual napkin 1 can steadily cover the wearer's lower abdomen with the anterior region _AF having a long anterior-posterior length, and bring the anterior region _AF into close contact with the wearer's skin without any gaps. Therefore, the function of the functional portion 20 included in the anterior side region _AF can be sufficiently imparted to the lower abdomen of the wearer.

Here, in the present specification, the "adhesive portion arrangement region" is at least partially overlapped with the absorbent body in the thickness direction on the non-skin facing surface in the central portion in the width direction of the absorbent article, and is before and after the absorbent article. An area surrounding an adhesive portion for fixing clothes arranged so as to extend in the direction, including the front end portion of the adhesive portion located on the most front side in the front-rear direction, and the front side extending in the width direction. End virtual line; rear end virtual line including the rear end of the adhesive portion located on the rearmost side in the front-rear direction and extending in the width direction; on the outermost side on one side in the width direction. One-sided end virtual line containing one side end of the located adhesive portion and extending in the anteroposterior direction; and including the other side end portion of the adhesive portion located on the outermost side of the other side in the width direction It means a rectangular area surrounded by a virtual line at the other end extending in the direction;
On the other hand, the "adhesive portion non-arrangement region" is a region adjacent to the front side of the adhesive portion arrangement region on the non-skin facing surface in the central portion in the width direction of the absorbent article and in which the adhesive portion for fixing clothes is not arranged. It means a region from the front end virtual line of the adhesive portion to the front end of the absorbent article.

In the present specification, the central portion in the width direction is a portion extending from the central portion in the width direction toward each of the one side end portion and the other side end portion in the width direction by the same length, and is the length in the width direction. It means a portion where the length is 70% or less of the length in the width direction (total length in the width direction) of the absorbent article.
Further, the widthwise length of the absorbent article means the widthwise length of the portion of the absorbent article having the shortest widthwise length (ie, the narrowest width), eg, the above-mentioned sanitary napkin 1 In the above, the length in the width direction of the portion adjacent to the front side of the pair of flap portions 6 and 6 corresponds.

Further, as shown in FIG. 1, the above-mentioned menstrual napkin 1 extends in the width direction _{D W} so as to pass through the front end portion located at the most anterior side DF of the menstrual napkin 1 in a plan view. It has an end virtual line LE ₁ and a rear end virtual line LE ₂ extending in the width direction _DW so as to pass through the rear end located at the _rearmost DB of the menstrual pad 1, and further. Between the front end virtual line LE ₁ and the rear end virtual line LE ₂ , a functional unit including the functional member 21 that gives a warm feeling to the wearer at the position of the front side _DF in the front side region _AF . It has an absorption unit 30 adjacent to the rear _side DB of the functional unit 20 and including an absorber 4 that absorbs liquid excrement such as menstrual blood discharged from the wearer.

The above-mentioned functional unit 20 and absorption unit 30 have a portion that exhibits a predetermined function and has low absorbency (that is, a portion that does not have the absorber 4) and a portion that has high absorbency (that is, absorption). The portion having the body 4) is a region divided into the anterior-posterior direction _DL of the menstrual napkin 1.

In the above-mentioned menstrual napkin 1, as shown in FIG. 2, the functional portion 20 is a pair of wide portions 22 extending outward in the width direction D _W from each of both ends in the width direction of the absorption portion 30. Has 22. The pair of wide portions 22 and 22 is longer than the widthwise length of the absorbing portion 30 (that is, the widthwise length of the portion of the absorbing portion 30 having the shortest widthwise length (that is, the narrowest portion)). It has a long widthwise length and is formed to cover the wearer's lower abdomen more widely and steadily.
In FIG. 2, the pair of wide portions 22 and 22 is wider in the width direction than the pair of virtual lines LW ₃ and _{LW 3} extending in the front-rear direction DL at positions corresponding to the length in the width direction of the absorption portion 30. A part of the functional unit 20 located on the outer side of the D _W corresponds to this.

In the present invention, since it is not an indispensable constituent requirement to have the pair of wide portions, it is not always necessary to have such wide portions depending on the form of the absorbent article and the like.

Further, the above-mentioned absorption portion 30 is located substantially at the center of the absorption portion 30 in the front-rear direction _{DL, and overlaps with the pair of flap portions 6 and 6 in the width direction D W (} that is, the center of the flap portion). (Overlapping with the axis C _W ), the area corresponding to the excretion port facing the wearer's excretion port when wearing the sanitary napkin 1; and the anterior absorption part adjacent to the front side _DF of the area corresponding to the excretion port; the excretion It can be divided into three areas, the rear absorption part adjacent to the rear _side DB of the mouth-corresponding area.

Further, in the above-mentioned menstrual napkin 1, as shown in FIG. 1, in a plan view, the first fold axis in the front-rear direction extending in the front-rear direction _DL for folding the menstrual _napkin 1 in three in the width direction DL. LW ₁ and front-back second folding axis LW ₂ ; width-oriented first folding axis _{LL 1} and width-direction second folding axis extending in the width direction _DW for folding the menstrual napkin 1 in three in the front-back direction DL. It has LL ₂ . The menstrual napkin 1 is folded in three in each of the front-rear direction _{DL and the width direction D W so} that the skin facing surface S _F is on the inside by each of these folding axes, and the napkin 1 is as shown in FIG. The package 10 can be formed.
That is, the menstrual napkin 1 in the unfolded state as shown in FIG. 1 is placed on the skin facing surface SF at each of the front-rear direction first folding axis _{LW 1} and the front-back direction second folding axis _{LW 2} extending in the front-rear direction DL. After _folding in _three in the width direction _{D W so} that The individual package 10 as shown in FIG. 4 can be formed by _folding it in three in the front-rear direction so that the inside is inside.
When folding the menstrual napkin 1, the menstrual napkin 1 is folded together with the packaging material 11 attached to the non _- skin facing surface SB, and after the folding, the packaging material is on the outer surface of the packaging material 11. The open end of the folded packaging material 11 is sealed by the lead tape 12 arranged at the end of the 11 to maintain the packaging state.

Further, in the above-mentioned menstrual napkin 1, as shown in FIG. 1, in the above-mentioned front side region _AF , the width direction first folding axis LL ₁ for folding the menstrual napkin 1 in the front-rear direction _LL is the thickness direction. Although it overlaps with the front side adhesive portion arrangement region _A7A in _DT , the absorbent article of the present invention is not limited to such an embodiment, and the widthwise folding axis in the front side region is adhered in the thickness direction. It does not have to overlap with the part arrangement area. In this way, when the folding shaft for folding the absorbent article in the front-rear direction does not overlap the adhesive portion arrangement region in the thickness direction, the absorbent article is adhesively fixed to the wearer's clothes (for example, underwear, etc.). At that time, since it is possible to prevent the creases and creases formed along the folding axis from being fixed to the wearer's clothing while being attached to the front side region, the front side region is used by the wearer. It has the advantage that it can be steadily adhered to the skin.

The front-back folding axis (that is, the front-back first folding axis LW ₁ and the front-back second folding axis LW ₂ ) is different from the width-direction folding axis when the menstrual napkin 1 is worn (that is, the menstrual napkin). When 1 is deformed so as to be curved in the front-back direction _DL along the body shape of the wearer), a gap is unlikely to be formed between the wearer's skin and the skin-facing surface of the absorbent article.

Further, in the above-mentioned menstrual napkin 1, as shown in FIGS. 1 to 3, the absorber 4 of the absorption unit 30 does not extend beyond the boundary portion of these regions in the functional unit 20. In the absorbing portion 30, the functional member 21 of the functional portion 20 extends beyond the boundary portion of these regions, and further, the portion of the absorbing portion 30 adjacent to the functional portion 20 is relatively opposed to the skin. The absorber 4 located on the surface side and the functional member 21 located relatively on the non-skin facing surface side have an overlapping portion 40 that overlaps with the thickness direction _DT . Since the absorber 4 and the functional member 21 overlap each other in such a form, the overlapping portion 40 has an action of absorbing liquid excrement discharged from the wearer as a main action.
As described above, in the sanitary napkin 1, the absorbing portion 30 has the above-mentioned overlapping portion 40, that is, the functional member 21 of the functional portion 20 absorbs beyond the boundary portion between the functional portion 20 and the absorbing portion 30. Since it extends to the portion 30, a seam is not formed between the functional unit 20 and the absorption unit 30, and it is possible to suppress an unintentional bending of the front side region _AF starting from the seam. .. As a result, the menstrual napkin 1 can more reliably bring the front region _AF including the functional portion 20 into close contact with the wearer's skin.

When the menstrual napkin 1 is worn, the non _- skin facing surface SB of the menstrual napkin 1 is put on by the wearer via the adhesive portion 7 for fixing the clothes and the pair of front side adhesive portions 72, 72. After being attached to the inner surface of (for example, underwear, etc.), the pair of flap portions 6 and 6 are folded back toward the outer surface side of the garment and attached to the outer surface of the garment via the pair of flap portion fixing adhesive portions 71 and 71. Thereby, it is fixed to the wearer's clothes.

Hereinafter, various constituent members of the absorbent article of the present invention will be described in more detail using the above-mentioned sanitary napkin 1.

[Surface sheet]
In the menstrual napkin 1, as shown in FIG. 1, the surface sheet 2 extends from the anterior side end portion to the posterior side end portion of the menstrual napkin 1 in the _{anteroposterior} direction DL in a plan view, and is used for menstruation. The napkin 1 has a vertically long outer shape extending from one side end portion of the width direction D _W to the other side end portion. As shown in FIG. 3, the surface sheet 2 is arranged at a position on the skin facing surface side in the thickness direction _DT of the menstrual napkin 1 and has a contact surface that can come into contact with the wearer's skin surface (that is, menstruation). It is formed by a liquid-permeable sheet-like member that forms the skin facing surface S _F ) of the menstrual pad 1.

The liquid-permeable sheet-like member is not particularly limited as long as it has various characteristics (for example, liquid permeability, touch, flexibility, strength, etc.) that can be used as a surface sheet of an absorbent article. For example, various non-woven fabrics such as air-through non-woven fabric, spunlace non-woven fabric, spunbond non-woven fabric, point-bonded non-woven fabric, and porous resin film can be used. Further, the structure of the sheet-like member is not particularly limited, and in addition to the flat non-perforated sheet-like structure, various sheet-like structures such as a flat sheet-like structure having a plurality of openings and an uneven structure are adopted. be able to.

When a non-woven fabric is used as the surface sheet, the type of constituent fibers thereof is not particularly limited, and for example, cellulosic fibers or thermoplastic resin fibers that have been hydrophilized (for example, olefin resins that have been hydrophilized). , Polyester resin, etc.) and other hydrophilic fibers. These fibers may be used alone or in combination of two or more kinds of fibers.

Further, in the above-mentioned menstrual napkin 1, the surface sheet 2 located on the skin facing surface side of the absorber 4 and the functional member 21 in the thickness direction _DT is a surface sheet 2 of the absorber 4 and the functional member 21, respectively. It is joined with. When each of the absorber 4 and the functional member 21 is joined to the surface sheet 2 in this way, when the menstrual napkin 1 is worn, the menstrual napkin 1 moves back and forth along the wearer's body shape. Even if it is deformed so as to be curved in the direction _DL , it is difficult for the front region A _F to be unintentionally bent due to the misalignment of the absorber 4 and the functional member 21, and the function of the absorber 4 is further increased. By covering the boundary portion with the sex member 21 with the surface sheet 2, it is possible to make it difficult for a gap to be formed between the boundary portion and the wearer's skin.

In the present invention, as the outer shape, various dimensions, basis weight, etc. of the surface sheet, any outer shape, various dimensions, basis weight, etc. can be adopted according to desired liquid permeability, touch, flexibility, and the like.

[Absorber]
In the above-mentioned menstrual napkin 1, as shown in FIG. 1, in a plan view, the absorber 4 is centered on the substantially central portion of the area corresponding to the excretion port of the menstrual napkin 1 in the anteroposterior direction _DL and the width direction. It extends over a wide area of the D _W and has a vertically long outer shape in which both ends of the front-rear direction _DL project so as to draw an arc toward the outside of the front-rear direction _DL . As shown in FIG. 3, the absorber 4 is arranged between the front surface sheet 2 and the back surface sheet 3 in the thickness direction _DT of the sanitary napkin 1, and is a liquid such as menstrual blood that has permeated the front surface sheet 2. It is formed of a water-absorbing member having predetermined water-absorbing and liquid-retaining properties capable of absorbing and holding excrement.

Such a water-absorbent member is not particularly limited as long as it can absorb and retain liquid excrement such as menstrual blood discharged from the wearer, and any water-absorbent member known in the art is adopted. be able to. Examples of such a water-absorbent member include those in which at least one absorbent core made of any water-absorbent material is covered with a hydrophilic core wrap sheet such as tissue. Here, examples of the water-absorbent material constituting the absorbent core include hydrophilic fibers and highly absorbent polymers, and more specifically, cellulosic fibers such as crushed pulp, cotton, rayon, and acetate; acrylic. Granules made of highly absorbent polymers such as sodium acid copolymers; and mixtures thereof.

In the present invention, as the outer shape, various dimensions, basis weight, etc. of the absorber, any outer shape, various dimensions, basis weight, etc. according to desired absorption performance, flexibility, strength, etc. can be adopted.

[Back sheet]
In the above-mentioned menstrual napkin 1, as shown in FIG. 2, the back sheet 3 extends from the front end portion to the rear side end portion of the front-back direction _DL of the menstrual napkin 1 in a plan view, and also extends. The menstrual pad 1 has a vertically long outer shape extending from one side end portion of the width direction D _W to the other side end portion. As shown in FIG. 3, the back surface sheet 3 is arranged at a position on the non-skin facing surface side in the thickness direction _DT of the sanitary napkin 1 and is a non-contact surface with respect to the wearer's skin surface (that is, for menstruation). It is formed by a liquid-impermeable sheet-like member that forms the non _- skin facing surface SB) of the napkin 1.

The liquid impermeable sheet-like member is not particularly limited as long as it has at least a liquid impermeable property that can prevent the permeation of the liquid excrement discharged from the wearer, and is, for example, heat. Hydrophobic non-woven fabrics formed of plastic resin fibers (for example, polyolefin resin fibers such as polyethylene and polypropylene, polyester resin fibers such as polyethylene terephthalate, various composite fibers such as core sheath type); thermoplastics such as polyolefin resins. A hydrophobic resin film formed of a resin; a laminate obtained by laminating a non-woven fabric on the resin film; a laminated non-woven fabric such as an SMS non-woven fabric can be used. Further, the structure of the sheet-like member is not particularly limited, and in addition to a flat non-perforated sheet-like structure, for example, a plurality of openings for ensuring air permeability while maintaining a predetermined liquid impermeable property are provided. Various sheet-like structures such as a flat sheet-like structure and an uneven structure can be adopted.

In the present invention, as the outer shape, various dimensions, basis weight, etc. of the back surface sheet, any outer shape, various dimensions, basis weight, etc. can be adopted according to the desired leakage-proof performance, breathability, and the like.

[Side seat]
In the above-mentioned menstrual pad 1, the pair of side sheets 5 and 5 extend in the front-rear direction _DL at both ends of the width direction D _W of the menstrual napkin 1 in a plan view as shown in FIG. It is formed by a pair of strip-shaped sheet-like members. The pair of side sheets 5 and 5 are arranged at positions on the skin facing surface side in the thickness direction _DT of the sanitary _napkin 1 to form the skin facing surface SF of the sanitary napkin 1 together with the surface sheet 2. ing.

Further, in each of the pair of side sheets 5 and 5, the outer end portion of the width direction D _W is joined to the skin facing surface of the back surface sheet 3 to form a fixed end portion, while the width direction D _W The inner end of the is not joined to any of the constituent members such as the surface sheet 2 to form a free end. As a result, the pair of side seats 5 and 5 have the inner end (free end) of the width direction _DW standing up when the sanitary napkin 1 is worn, and the liquid excrement discharged from the wearer. A leak-proof wall portion for preventing leakage can be formed.

The band-shaped sheet-shaped member used for the side sheet may have various characteristics (for example, liquid impermeable (leakage-proof), touch, flexibility, strength, etc.) that can be used as a side sheet of an absorbent article. However, the present invention is not particularly limited, and for example, a liquid-impermeable sheet-like member similar to the back surface sheet (that is, a sheet-like member such as a hydrophobic non-woven fabric or a hydrophobic resin film) cut into a strip shape may be used. can.

In the present invention, as the outer shape, various dimensions, basis weight, etc. of the side sheet, any outer shape, various dimensions, basis weight, etc. can be adopted according to desired leak-proof property, touch, flexibility, and the like.

In the present invention, it is not essential to have the pair of side seats, so it is not always necessary to have such side seats depending on the form of the absorbent article and the like.

[Functional member]
In the above-mentioned menstrual napkin 1, as shown in FIG. 1, the functional member 21 is a front-rear direction _DL and a functional portion 20 located in the front side _DF in the front side region _AF in a plan view. It has a predetermined outer shape extending over a wide range in the width direction D _W. As shown in FIG. 3, the functional member 21 is arranged between the front surface sheet 2 and the back surface sheet 3 in the thickness direction _DT of the menstrual pad 1, and has a predetermined action (warm feeling action) on the wearer. It is formed by a sheet-like member containing a warming agent as a functional agent component.

The sheet-shaped member forming the functional member 21 is composed of a warming agent as a functional agent component and a base material capable of holding the warming agent.
In the present invention, as the sheet-like member forming the functional member, for example, a liquid or solid (including paste, powder, etc.) functional agent component and the functional agent component are retained. By a sheet-like member containing a functional agent component containing at least a base material having a structure to be obtained (for example, cloth, etc.) or a base material (for example, cloth, etc.) capable of exhibiting a predetermined function (for example, heat retention function). Examples thereof include a sheet-like member that does not contain a functional agent component.

The base material is not particularly limited, and examples thereof include cloths (for example, non-woven fabrics, woven fabrics, knitted fabrics, etc.) and porous resin sheets (for example, sponge sheets, etc.). Such a base material does not have to be used alone as a base material for a functional member, and is also used as another constituent member (for example, a front surface sheet, a back surface sheet, an intermediate sheet, a core wrap sheet, etc.). May be good. Therefore, when the functional member is formed of the above-mentioned sheet-like member containing no functional agent component, such other constituent members become the functional member, and even in such a case, the lower abdomen of the wearer. It is possible to exert a predetermined function such as a function of keeping warmth.
If the functional agent component itself has a predetermined shape-retaining property, etc., and the functional agent component alone can be arranged at a predetermined position of the absorbent article and can exhibit a predetermined function, the functional member is a functional member. Does not have to have a substrate.

Further, in the above-mentioned menstrual napkin 1, the warming agent used as a functional agent component does not generate heat by itself and stimulates the warmth sensory receptor of the wearer's skin to perceive the warmth to the wearer. It contains a warming component that makes you feel warm.
In the menstrual napkin 1, the warming agent is contained in substantially the entire functional member 21 in a plan view, but a part (for example, the center) can exhibit a predetermined warming function. It may be included in only the part, etc.).

Further, in the above-mentioned menstrual napkin 1, the functional member 21 is arranged on the non-skin facing surface side of the surface sheet 2, but the warming agent contained in the functional member 21 is worn by the menstrual napkin 1. Occasionally, it permeates the surface sheet 2 by elution or volatilization and can come into contact with the skin of the wearer's lower abdomen. It is possible to give a feeling of warmth to the lower abdomen of a person.
By warming the wearer's lower abdomen, that is, the part near the wearer's uterus in this way, the wearer's menstrual pain can be alleviated, and symptoms such as premenstrual syndrome, poor circulation, and menopause can be alleviated. Can contribute to.

Further, in the above-mentioned menstrual napkin 1, as shown in FIGS. 2 and 3, the above-mentioned functional member 21 overlaps with the above-mentioned front side adhesive portion arrangement region A _7A in the thickness direction _DT . As a result, the menstrual napkin 1 can be worn after the portion of the functional portion 20 corresponding to the functional member 21 is adhered and fixed to the wearer's clothing, so that the portion corresponding to the functional member 21 can be worn more accurately. It can be brought into close contact with a person's skin.

In the menstrual napkin 1, the position of the thickness direction _DT on which the functional member 21 is arranged is not particularly limited as long as the warming agent can come into contact with the wearer's skin when the menstrual napkin 1 is worn. However, from the viewpoint of ease of contact with the skin of the wearer, it is preferable that the position is close to the _skin facing surface SF.

The warming component contained in the warming agent is preferably a plant-derived compound from the viewpoint of the wearer's sense of security, for example, capsaicins, vanillyl alcohol alkyl ether derivatives (for example, vanillyl ethyl). Ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl hexyl ether, etc.), ginger extract, ginger oil and the like can be mentioned. Among these compounds, it is preferable to use vanillyl alcohol alkyl ether derivative, ginger extract, ginger oil and the like from the viewpoint of skin irritation. These compounds may be used alone or in combination of two or more.

Further, when the warming agent is applied to a substrate by coating or the like, a solvent component capable of dissolving or dispersing the warming component can be used together with the warming component, and such a solvent component may be, for example. , Lipophilic solvent, hydrophilic solvent and the like.
Examples of the lipophilic solvent include fats and oils such as natural oils (for example, fatty acid esters such as triglycerides, coconut oil, linseed oil, etc.) and hydrocarbons (for example, paraffin oil, etc.). On the other hand, examples of the hydrophilic solvent include water and alcohol, and examples of the alcohol include lower alcohols (eg, methanol, ethanol, ethylene glycol, glycerin, etc.) and higher alcohols (eg, capryl alcohol). , Lauryl alcohol, etc.).
Among these solvents, it is preferable to use a lipophilic solvent such as fat or oil or alcohol because it is easy to control the volatility, and further, it is easy to maintain the absorption performance of the absorbent article. It is more preferable to use an oily solvent.
It should be noted that such a solvent may remain in the application site in a solidified state or a volatilized state after being applied to the substrate.

Further, the concentration of the warming component in the warming agent is preferably 1 to 50% by mass, more preferably 3 to 30% by mass, and further preferably 5 to 15% by mass from the viewpoint of the warming effect. Is.

In the present invention, the functional agent component of the functional member is not limited to the above-mentioned warming agent, and any functional agent component according to a desired action can be adopted. Examples of such functional agent components include cooling sensation agents, heat-generating agents, and agents (for example, skin astringents, anti-inflammatory agents, antibacterial agents, pH adjusters, moisturizers, deodorants, Chinese herbs, etc.). Be done. For these functional agent components, for example, in a plan view, one type of functional agent component (for example, a warming agent) is arranged in a part of a functional member, and another type of functional agent is arranged in another part. In the form of arranging the components (for example, a cooling sensation agent), they may be used in combination.

In the present invention, the cooling sensation agent that can be used as the above-mentioned functional agent component is a cooling sensation component that makes the wearer perceive a cold sensation by stimulating the cold sensation receptor of the wearer's skin without cooling itself. Is included. Examples of the cooling sensation component include menthol (for example, l-menthol, etc.); menthol derivative (for example, menthol lactate, menthylglyceryl ether, etc.); methyl salicylate; essential oil derived from plants such as mint and eucalyptus. When the cooling sensitizer is applied to the base material by coating or the like, the same solvent component as the above-mentioned warming sensitizer can be used.

The concentration of the cooling sensation component in the cooling sensation agent is preferably 5 to 90% by mass, more preferably 10 to 80% by mass, and further preferably 30 to 70% by mass from the viewpoint of the cooling sensation effect. Is.

In the present invention, the heat-generating agent that can be used as the above-mentioned functional agent component has an action of warming the wearer's skin by generating heat by itself, and is, for example, heat of oxidation of a metal powder such as iron powder, acid or alkali. Examples include those that utilize chemical energy such as heat of neutralization and heat of hydration of inorganic salts. The exothermic agent may be used by dissolving or dispersing it in a solvent component or a dispersion medium.

In the present invention, the agent that can be used as the functional agent component has a predetermined pharmacological action on the wearer's skin, and examples thereof include skin astringents, anti-inflammatory agents, antibacterial agents, pH adjusters, and moisturizers. Can be mentioned.
Examples of the skin astringent include zinc oxide, aluminum sulfate, tannic acid, and oil-soluble polyphenols (for example, Oobaku extract, Otogirisou extract, Camomila extract, Shirakaba extract, Biwa leaf extract, Bodaiju extract, Hop extract, etc.). Examples include those containing.
Examples of the anti-inflammatory agent include naturally occurring anti-inflammatory components (eg, button extract, oyster extract, chamomile extract, yomogi extract, perilla extract, etc.) and synthetic anti-inflammatory components (eg, allantin, dipotassium glycyrrhizinate, etc.). Examples include those containing anti-inflammatory components.
Examples of the antibacterial agent include naturally derived antibacterial components (for example, Oubaku extract, olive leaf extract, chamomile extract, bear zasa extract, sansho extract, perilla extract, dokudami extract, hop extract, eucalyptus extract, yomogi extract, etc.) and synthetics. Examples thereof include those containing an antibacterial component such as an antibacterial component (for example, ethylhexyl glycerin and the like).
Examples of the pH adjuster include those containing a weakly acidic component for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid.
Examples of the moisturizer include those containing moisturizing components such as polyhydric alcohols (eg, glycerin, propylene glycol, butylene glycol, sorbit, etc.), urea, and emollient components (eg, petrolatum, etc.).

In the present invention, as the content (basis weight) of the functional agent component in the functional member, a predetermined content can be adopted according to the type of the functional agent component, the arrangement position of the functional member, and the like. For example, when a warming agent or a cooling sensation agent is adopted as the functional agent component and the functional member is arranged in the same form as the above-mentioned sanitary napkin 1, the functional agent component is a warming agent or a cooling sensation agent. The basis weight of the warm or cold sensation component contained in the sensitizer is preferably 0.001 to 30 g / m ² , more preferably 0.01 to 20 g / m ² , and even more preferably 0.1 to 10 g / m. It can be contained in the functional member with a basis weight of ² .

In the present invention, as the outer shape, various dimensions, basis weight, etc. of the functional member, any outer shape, various dimensions, basis weight, etc. can be adopted according to the type, arrangement form, etc. of the functional agent component. ..

[Adhesive part]
As shown in FIG. 2, the above-mentioned menstrual napkin 1 has a plurality of adhesive portions, that is, an adhesive portion 7 for fixing clothes, and a pair of adhesive portions 71 for fixing flap portions on the non _- skin facing surface SB of the back sheet 3. It comprises a 71 and a pair of front side adhesive portions 72, 72, each of which is formed by an adhesive arranged in the above-mentioned predetermined form.

As the pressure-sensitive adhesive used for such a pressure-sensitive portion, any pressure-sensitive adhesive known in the art can be adopted, for example, styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS). , Styrene-Isoprene-Styrene (SIS) and other styrene-based copolymers are the main components of the pressure-sensitive pressure-sensitive adhesive.

In the above-mentioned menstrual napkin 1, the pair of front side adhesive portions 72 and 72 for fixing clothes are arranged on the pair of wide portions 22 and 22 in the functional portion 20, respectively, as shown in FIG. There is. In this way, when the front side adhesive portions 72 and 72 are arranged on each of the pair of wide portions 22 and 22 in the functional portion 20, the functional portion 20 is steadily adhered and fixed to the wearer's clothes. Since the menstrual napkin 1 can be worn, the functional portion 20 can be more reliably adhered to the wearer's skin.

Further, in the above-mentioned menstrual napkin 1, as shown in FIGS. 2 and 3, the pair of front side adhesive portions 72, 72 overlap with the functional member 21 in the thickness direction _DT . As described above, when the functional member 21 in the functional unit 20 and the pair of front side adhesive portions 72, 72 overlap in the thickness direction _DT , the portion corresponding to the functional member 21 in the functional unit 20. Since the menstrual napkin 1 can be worn after steadily adhering and fixing to the wearer's clothes, the portion of the functional portion 20 corresponding to the functional member 21 can be more accurately adhered to the wearer's skin. ..

In the present invention, as the arrangement form, outer shape, various dimensions, etc. of the various adhesive portions, any arrangement form, outer shape, various dimensions, etc. can be adopted in consideration of ease of fixing to clothing. ..

The absorbent article of the present invention is not limited to the menstrual napkins of the above-described embodiment, and can be applied to various absorbent articles such as panty liners, incontinence pads, breast milk pads, and disposable diapers. Further, the absorbent article of the present invention can be appropriately combined, substituted, modified or the like without being limited to the above-mentioned embodiments and the like, as long as it does not deviate from the object and purpose of the present invention. In this specification, the ordinal numbers such as "first" and "second" are for distinguishing the items to which the ordinal numbers are attached, and mean the order, priority, importance, etc. of each item. It's not something to do.

1 Menstrual napkin (absorbent article)
2 Front sheet 3 Back sheet 4 Absorber 5 Side sheet 6 Flap part 7 Adhesive part for fixing clothes 71 Adhesive part for fixing flap part 72 Front side adhesive part 20 Functional part 21 Functional member 30 Absorbent part 40 Overlapping part _AF Front Side area _AB Rear side area A _7A Front side adhesive part placement area A _7B Rear side adhesive part placement area A ₀ Adhesive part non-placement area C _W Flap part center axis

Claims (8)

Absorbency having a front-rear direction and a width direction, and having an absorbing portion having an absorber and a pair of flap portions having both ends of the absorbing portion in the width direction extending outward in the width direction, respectively. It ’s an article,
The absorbent article is
The front of the absorbent article from the central axis of the flap portion which is adjacent to the front side of the absorbent portion and has a functional portion including a predetermined functional member and passes through the center of each of the pair of flap portions in the front-rear direction. The anterior region extending to the side end and
It has an anteroposterior length shorter than the anterior-posterior length of the anterior region, and has a posterior region extending from the flap central axis to the posterior end of the absorbent article. ,
The anterior region is a non-skin facing surface in the central portion in the width direction.
An adhesive portion arrangement region in which an adhesive portion for fixing clothes is arranged so as to at least partially overlap the absorber in the thickness direction and extend in the front-rear direction.
It has an adhesive portion non-arranged region adjacent to the front side of the adhesive portion arranged region and in which an adhesive portion for fixing clothes is not arranged.
Further, the adhesive portion-arranged region has a front-rear direction length longer than the anteroposterior-posterior length of the adhesive portion non-arranged region .
The absorbent article in which the functional member overlaps the adhesive portion arrangement region in the thickness direction . The functional portion has a pair of wide portions extending outward in the width direction from each of both ends in the width direction of the absorption portion.
The absorbent article according to claim 1 , wherein each of the pair of wide portions has a front side adhesive portion for fixing clothes on the non-skin facing surface . The absorbent article according to claim 2, wherein the functional member overlaps with the front side adhesive portion in the thickness direction . Absorbency having a front-rear direction and a width direction, and having an absorbing portion having an absorber and a pair of flap portions having both ends of the absorbing portion in the width direction extending outward in the width direction, respectively. It ’s an article,
The absorbent article is
The front of the absorbent article from the central axis of the flap portion which is adjacent to the front side of the absorbent portion and has a functional portion including a predetermined functional member and passes through the center of each of the pair of flap portions in the front-rear direction. The anterior region extending to the side end and
It has an anteroposterior length shorter than the anterior-posterior length of the anterior region, and has a posterior region extending from the flap central axis to the posterior end of the absorbent article. ,
The anterior region is a non-skin facing surface in the central portion in the width direction.
An adhesive portion arrangement region in which an adhesive portion for fixing clothes is arranged so as to at least partially overlap the absorber in the thickness direction and extend in the front-rear direction.
It has an adhesive portion non-arranged region adjacent to the front side of the adhesive portion arranged region and in which an adhesive portion for fixing clothes is not arranged.
Further, the adhesive portion-arranged region has a front-rear direction length longer than the anteroposterior-posterior length of the adhesive portion non-arranged region.
The functional portion has a pair of wide portions extending outward in the width direction from each of both ends in the width direction of the absorption portion.
Each of the pair of wide portions has a front side adhesive portion for fixing clothes on the non-skin facing surface.
The absorbent article in which the functional member overlaps the front adhesive portion in the thickness direction. The absorbent article according to any one of claims 1 to 4, wherein the absorbent portion has an overlapping portion in which the absorbent body and the functional member overlap in the thickness direction . Absorbency having a front-rear direction and a width direction, and having an absorbing portion having an absorber and a pair of flap portions having both ends of the absorbing portion in the width direction extending outward in the width direction, respectively. It ’s an article,
The absorbent article is
The front of the absorbent article from the central axis of the flap portion which is adjacent to the front side of the absorbent portion and has a functional portion including a predetermined functional member and passes through the center of each of the pair of flap portions in the front-rear direction. The anterior region extending to the side end and
It has an anteroposterior length shorter than the anterior-posterior length of the anterior region, and has a posterior region extending from the flap central axis to the posterior end of the absorbent article. ,
The anterior region is a non-skin facing surface in the central portion in the width direction.
An adhesive portion arrangement region in which an adhesive portion for fixing clothes is arranged so as to at least partially overlap the absorber in the thickness direction and extend in the front-rear direction.
It has an adhesive portion non-arranged region adjacent to the front side of the adhesive portion arranged region and in which an adhesive portion for fixing clothes is not arranged.
Further, the adhesive portion-arranged region has a front-rear direction length longer than the anteroposterior-posterior length of the adhesive portion non-arranged region.
The absorbent portion is the absorbent article having an overlapping portion in which the absorbent body and the functional member overlap in the thickness direction. The anterior region has a folding axis for folding the absorbent article in the anteroposterior direction.
The absorbent article according to any one of claims 1 to 6, wherein the folding shaft does not overlap with the adhesive portion arrangement region in the thickness direction . The absorbent article according to any one of claims 1 to 7, wherein the functional member contains a warming agent as a functional agent component.

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