JP7236242B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles.

Patent Document 1 discloses an absorbent article containing an absorbent core containing a superabsorbent polymer, a cover sheet disposed on the skin side and the non-skin side of the absorbent core, and a perfume as a functional material in the cover sheet. It has been known. Since the perfume is placed closer to the skin than the superabsorbent polymer, which is the source of the odor, the perfume reaches the wearer first before the odor caused by the superabsorbent polymer reaches the wearer, Odor can be suppressed.

JP 2018-102910 A

In the absorbent article of Patent Document 1, the perfume contained in the cover sheet on the non-skin side is arranged between the absorbent core and the back sheet, and is easily absorbed by the absorbent core before reaching the top sheet. Therefore, the perfume contained in the cover sheet on the non-skin side has not been able to sufficiently exhibit its effect as a functional material. On the other hand, the perfume contained in the cover sheet on the skin side is arranged between the absorbent core and the top sheet, and easily reaches the wearer through the top sheet. Therefore, the perfume contained in the cover sheet on the skin side was able to exert its effect as a functional material. However, the perfume contained in the cover sheet on the skin side starts volatilizing all at once when the wearer puts on the absorbent article, so the volatilization amount of the perfume has been greatly reduced over time. Therefore, there is a problem that the effect of the functional material (the odor suppressing effect in Patent Document 1) does not last long.

Therefore, an absorbent article that has a functional material disposed between the top sheet and the absorbent core and that can improve the duration of the effect of the functional material is desired.

An absorbent article according to one aspect is arranged in a front-rear direction, a width direction orthogonal to the front-rear direction, a thickness direction, an absorbent core, and a skin surface side of the absorbent core, and faces the wearer's skin. and a functional material disposed between the top sheet and the absorbent core in the thickness direction. The absorbent article has a hydrophobe having hydrophobicity disposed between the topsheet and the absorbent core. The functional material is arranged in both an overlapping region overlapping the hydrophobic portion in the thickness direction and a non-overlapping region not overlapping the hydrophobic portion in the thickness direction.

FIG. 1 is a schematic plan view (No. 1) of a sanitary napkin 1 viewed from the skin side. FIG. 2 is a schematic plan view of the napkin 1 viewed from the non-skin side. FIG. 3 is a schematic cross-sectional view (part 1) of the napkin 1 along line A1-A1 in FIG. FIG. 4 is a diagram for explaining an end portion in the width direction W of the schematic cross-sectional view shown in FIG. FIG. 5 is a schematic plan view (No. 2) of the napkin 1 viewed from the skin surface side. FIG. 6 is a schematic cross-sectional view (No. 2) of the napkin 1 along line A1-A1 in FIG. FIG. 7 is a schematic plan view (No. 1) of the napkin 1 according to the modification as viewed from the skin surface side. FIG. 8 is a schematic cross-sectional view of the napkin 1 indicated by arrows A2-A2 in FIG. FIG. 9 is a schematic plan view (No. 2) of the napkin 1 according to the modification as seen from the skin surface side. FIG. 10 is an enlarged schematic plan view seen from the side (skin surface side or non-skin surface side) where the hydrophobic part is applied.

(1) Overview of Embodiments At least the following matters will become clear from the description of this specification and the accompanying drawings.

An absorbent article according to one aspect is arranged in a front-rear direction, a width direction orthogonal to the front-rear direction, a thickness direction, an absorbent core, and a skin surface side of the absorbent core, and faces the wearer's skin. and a functional material disposed between the top sheet and the absorbent core in the thickness direction. The absorbent article has a hydrophobe having hydrophobicity disposed between the topsheet and the absorbent core. The functional material is arranged in both an overlapping region overlapping the hydrophobic portion in the thickness direction and a non-overlapping region not overlapping the hydrophobic portion in the thickness direction.

According to this aspect, the duration of the effect of the functional material can be improved, because the time during which the functional material exerts its effect differs between the overlapping region and the non-overlapping region.

According to a preferred aspect, in the overlapping region, the functional material may be arranged closer to the skin surface than the hydrophobic portion.

When the effect is obtained by volatilizing the functional material, the movement of the functional material in the overlapping region to the non-skin surface side is restricted by the hydrophobic portion. As a result, the proportion of the functional material that migrates to the non-skin side decreases, and the proportion of the functional material that migrates to the skin side increases. Therefore, the functional material in the overlapping region starts volatilizing sooner when the wearer puts on the absorbent article than the functional material in the non-overlapping region, so that the wearer feels the effects of the functional material sooner. becomes easier. On the other hand, the functional material in the non-overlapping region has a smaller proportion of the functional material that migrates toward the skin surface compared to the functional material in the overlapping region, and therefore exhibits its effect later than the functional material in the overlapping region. do. Therefore, the duration of the effect of the functional material can be improved because the time during which the functional material exerts its effect differs between the overlapping area and the non-overlapping area.

When the functional material is effective by contacting excrement (menstrual blood, urine, etc.), in the overlap region, the excrement becomes more difficult to diffuse to the non-skin surface side than the hydrophobic part, and the excrement is prevented from spreading. It becomes easier to contact the functional material in the overlap region. Therefore, the proportion of the functional material in the overlapping region that contacts the excreta is higher than that in the non-overlapping region, and the functional material is more likely to exhibit its effects. On the other hand, in the non-overlapping area, excreta easily diffuses to the non-skin surface side, so the ratio of the functional material in the non-overlapping area to come into contact with excrement is lower than that in the overlapping area. Therefore, in the non-overlapping region, the functional material that exerts its effect tends to remain, and even if the excrement absorbed by the absorbent core returns to the skin surface side, it exerts its effect on the excrement. be able to. Therefore, the duration of the effect of the functional material can be improved because the time during which the functional material exerts its effect differs between the overlapping area and the non-overlapping area.

According to a preferred aspect, in the overlap region, the functional material may be arranged on the non-skin surface side of the hydrophobic portion.

When the effect is obtained by volatilizing the functional material, the movement of the functional material in the overlapping region toward the skin surface is restricted by the hydrophobic portion. Therefore, it takes time for the functional material in the overlapping region to pass through the hydrophobic portion, and it takes longer time for the functional material to exert its effect than the functional material in the overlapping region. On the other hand, the movement of the functional material in the non-overlapping region is not restricted by the hydrophobic part, and it is easier to move toward the skin surface than the functional material in the overlapping region. Therefore, the effect of the functional material in the non-overlapping region is exhibited first, and the effect of the functional material in the overlapping region is exhibited later. Therefore, the duration of the effect of the functional material can be improved because the time during which the functional material exerts its effect differs between the overlapping area and the non-overlapping area.

When the functional material is effective when it comes into contact with excrement (menstrual blood, urine, etc.), in the overlapping region, the excrement is less likely to diffuse to the non-skin surface side than the hydrophobic portion. Therefore, the functional material in the non-overlapping region is likely to come into contact with the excrement and exert its effect. On the other hand, when the amount of excrement is large, the excrement diffuses on the non-skin surface side of the hydrophobic portion in the non-overlapping region and reaches the functional material in the overlapping region. As a result, the functional material in the overlapping region exhibits its effect later than the functional material in the non-overlapping region. Therefore, the duration of the effect of the functional material can be improved because the time during which the functional material exerts its effect differs between the overlapping area and the non-overlapping area.

According to a preferred aspect, the functional material may have volatility.

According to one preferred aspect, the functional material may be an antibacterial agent or a deodorant.

According to a preferred aspect, the hydrophobic part may be provided on the non-skin surface side of the top sheet. As a result, compared to the case where the hydrophobic part is provided on the skin side of the top sheet, the hydrophobic part does not come into direct contact with the wearer's skin, so that deterioration of the wearer's touch can be suppressed. In addition, even if the excrement that has reached the member inside the top sheet diffuses, it is possible to prevent the excrement from seeping out to the skin surface side of the top sheet in the region overlapping with the hydrophobic portion. Therefore, it is possible to improve the duration of the effect of the functional material while suppressing deterioration of the wearer's touch due to exudation of excrement.

According to one preferred embodiment, the absorbent article may have an intermediate sheet arranged between said topsheet and said absorbent core. The hydrophobic portion may be provided on the skin surface side of the intermediate sheet. As a result, even if the excrement that has reached the inside of the second sheet diffuses inside the second sheet, it is possible to prevent the excrement from seeping out to the skin surface side of the top sheet in the region overlapping with the hydrophobic portion. Therefore, it is possible to improve the duration of the effect of the functional material while suppressing deterioration of the wearer's touch due to exudation of excrement.

According to one preferred embodiment, the absorbent article may have an intermediate sheet arranged between said topsheet and said absorbent core. The hydrophobic portion may be provided on the non-skin surface side of the intermediate sheet. Since excrement excreted on the top sheet can be quickly absorbed up to the second sheet, it is possible to improve the duration of the effect of the functional material while suppressing deterioration of the wearer's touch due to excretion.

According to a preferred aspect, the absorbent article has a pair of wings extending outward in the width direction from the outer edges of the absorbent core in the width direction and capable of being folded back when the absorbent article is used. may have The absorbent article may have a central region in which the absorbent core is arranged among the regions sandwiched between the pair of wings in a plan view of the absorbent article. The central region may have a hydrophobic region in which the hydrophobic portion is arranged and a non-hydrophobic region in which the hydrophobic portion is not arranged. In a plan view of the absorbent article, the non-hydrophobic area may overlap the straight line along the front-rear direction at any location in the central area.

Among the regions between the pair of wings, the central region where the absorbent core is arranged is generally the region facing the excretory opening (for example, the vaginal opening). In the central region, the non-hydrophobic region overlaps with the straight line extending in the front-rear direction, so the excrement diffuses in the front-rear direction and reaches the non-hydrophobic region. In the non-hydrophobic area, since no hydrophobic part is arranged, excrement easily reaches the absorbent core. Therefore, in the central area, the hydrophobic part controls the expression of the effect of the functional material, while the non-hydrophobic area allows the absorbent core to quickly absorb excrement.

According to a preferred aspect, the absorbent article may have a hydrophobic area in which the ink that constitutes the hydrophobic area is arranged by printing. The hydrophobic area may include a halftone dot area in which a plurality of halftone dots made of the ink are arranged, and a non-halftone dot area that is a gap area between the plurality of halftone dots. The ratio of the halftone dot area to the hydrophobic area may be greater than the ratio of the non-dot area to the hydrophobic area. As a result, the proportion of the ink forming the hydrophobic portion in the hydrophobic region increases, making it difficult for the functional material to pass through the hydrophobic portion, making it easier to control the effect of the functional material. Therefore, the time at which the functional material exerts its effect in the overlapping region and the non-overlapping region tends to be shifted, and the duration of the effect of the functional material can be improved.

According to a preferred aspect, the absorbent article may have a hydrophobic area in which the ink that constitutes the hydrophobic area is arranged by printing. The hydrophobic area may include a halftone dot area in which a plurality of halftone dots made of the ink are arranged, and a non-halftone dot area that is a gap area between the plurality of halftone dots. A ratio of the halftone dot area to the hydrophobic area may be less than or equal to a ratio of the non-dot area to the hydrophobic area. As a result, the proportion of the ink that forms the hydrophobic portion in the hydrophobic region is low, so that excrement easily passes through the hydrophobic portion in the hydrophobic region and reaches the absorbent core relatively easily. As a result, it is possible to achieve both control of the effects of the functional material and absorption of excrement.

According to a preferred aspect, the functional material may have volatility. The absorbent article includes a front region, a rear region, a central region disposed between the front region and the rear region, the top sheet and the absorbent core, which are compressed in the thickness direction. It may have a pair of pressing parts. The pair of pressing parts may extend in the front-rear direction in the central region. In a plan view of the absorbent article, the hydrophobic portion may be arranged between the pair of compressed portions. As a result, when a force directed inward in the width direction is applied to the absorbent article by the wearer's thighs, the absorbent article is likely to break along the pair of pressed portions, and the absorbent article follows the wearer's skin. becomes easier. As the absorbent article conforms to the wearer's skin, the skin side of the absorbent article comes close to the wearer's skin, and the volatilized functional material easily reaches the wearer's skin. The wearer can readily feel the effects of the functional material. In addition, compared to the case where no hydrophobic part is provided, the amount of excrement that passes through the hydrophobic part and reaches the absorbent core is reduced, but the excrement that has not passed through the hydrophobic part moves in the width direction, reach the pressing section. Since the excrement is drawn into the absorbent core at the compressed portion, the absorbability of the excrement can be maintained.

According to a preferred aspect, in the sheet disposed on the skin surface side of the absorber and provided with the hydrophobic portion, the maximum thickness of the portion overlapping with the hydrophobic portion is greater than the maximum thickness of the hydrophobic portion. It may be thinner than the maximum thickness of the widthwise outer portion. By reducing the maximum thickness of the part that overlaps with the hydrophobic part, the hydrophobic part tends to cause deterioration of breathability due to its hydrophobicity. can be maintained. On the other hand, by increasing the maximum thickness of the portion outside the hydrophobic portion in the width direction, the top sheet is more likely to come into contact with the wearer's skin, and the excrement that moves to the outside in the width direction of the hydrophobic portion is prevented. easier to absorb.

According to a preferred aspect, the hydrophobic portion may be provided by printing. As a result, the hydrophobic portion can be easily provided, and an increase in production cost can be suppressed.

As used herein, the term "hydrophobicity" means a property of being difficult to blend with water or to retain water, and for example, having a contact angle with ion-exchanged water of about 80° to 100°. The contact angle with ion-exchanged water can be measured by the method described in "Measurement of initial contact angle" in JP-A-2005-324010.

(2) Overall schematic configuration of absorbent article Hereinafter, embodiments will be described by taking a sanitary napkin as an example of an absorbent article according to the present invention. etc., as long as it is an absorbent article. The absorbent article may be used by being fixed to the article worn by the user.

FIG. 1 is a schematic plan view (No. 1) of a sanitary napkin 1 (hereinafter referred to as "napkin") viewed from the skin side. FIG. 2 is a schematic plan view of the napkin 1 viewed from the non-skin side. FIG. 3 is a schematic cross-sectional view (part 1) of the napkin 1 along line A1-A1 in FIG. FIG. 4 is a diagram for explaining an end portion in the width direction W of the schematic cross-sectional view shown in FIG. FIG. 5 is a schematic plan view (No. 2) of the napkin 1 viewed from the skin surface side. In FIG. 5, the functional region R3 in which the functional material is arranged (applied) is explicitly indicated by oblique lines. FIG. 6 is a schematic cross-sectional view (No. 2) of the napkin 1 along line A1-A1 in FIG. In addition, although the wing adhesive part 9 is shown in FIG.1 and FIG.5, it should be noted that the wing adhesive part 9 is arrange|positioned at the non-skin surface side T2 of the backsheet 4. As shown in FIG. 3, 4 and 6, the dimensions in each direction are not necessarily exact. Furthermore, for the sake of convenience, the adhesive HMA is omitted except for the body joint portion 5a in FIGS.

As shown in FIG. 1, the napkin 1 has a front-rear direction L and a width direction W orthogonal to the front-rear direction. The front-rear direction L is defined by the direction extending to the front side of the body and the rear side of the body. In other words, the front-rear direction L is a direction extending front-rear in the unfolded napkin 1 . Moreover, the napkin 1 has a thickness direction T in which both the front-rear direction L and the width direction W are orthogonal.

In the front-rear direction L of the napkin 1, the side that contacts the lower abdomen of the wearer is called the "front side", and the side that contacts the buttocks of the wearer is called the "rear side". In addition, in the thickness direction T of the napkin 1, the side that contacts the wearer's skin is called the "skin side" T1, and the opposite side (the side facing away from the wearer's skin) is the "non-skin side". side "T2". The XX line in the drawing is the center line in the width direction W. FIG.

The napkin 1 has a central region S3, a front side region S1 and a back side region S2. The central area S3 is an area in which a pair of wings 1W are arranged. Therefore, the central region S3 is the region where the wings 1W for fastening the napkin 1 to the wearing article are provided. In addition, the central region S3 may have an excretory opening contact portion that contacts the wearer's excretory opening (for example, the vaginal opening). When the napkin 1 is attached to a worn article (for example, underwear), the central region S3 may be positioned at the crotch portion of the worn article. The central region is thus the region located in the wearer's crotch, ie between the wearer's legs (thighs). The front side region S1 is located on the front side of the central region S3. The rear side region S2 is located on the rear side of the central region S3.

The napkin 1 has a pair of wings 1W. The pair of wings 1W extends outward in the width direction from the outer edge 10E of the absorbent body 10 (absorbent core) in the width direction W. Therefore, it extends to both outer sides in the width direction W from the central portion in the front-rear direction L. As shown in FIG. Also, the pair of wings 1W can be folded back when the napkin 1 is used.

In this specification, the outer edge is the outer edge in the width direction W, and the inner edge is the inner edge in the width direction W.

The napkin 1 has a top sheet 2 , a second sheet 3 , an absorbent body 10 , a back sheet 4 and side sheets 5 .

As shown in FIG. 3, in the thickness direction T, a top sheet 2, a second sheet 3, an absorbent body 10, side sheets 5 and a back sheet 4 are laminated. The top sheet 2, the second sheet 3, the absorbent body 10, the back sheet 4 and the side sheets 5 are joined and fixed by joints. An adhesive HMA, such as a hot melt adhesive, can be used as the joint. The adhesive is applied in an arbitrary application pattern over the skin surface side T1 and the non-skin surface side T2 of each member, and the application pattern can be selected from an Ω pattern, a spiral pattern, a stripe pattern, and the like. . Other members (eg, sonic seals, etc.) may be used as the joints.

The top sheet 2 is arranged on the skin surface side T1 from the absorbent body 10 and faces the wearer's skin. The top sheet 2 may be a "skin-side sheet" that mostly contacts the wearer's skin when worn.

The top sheet 2 may be made of any sheet-like material having a liquid-permeable structure, such as non-woven fabric, woven fabric, perforated plastic sheet, mesh sheet, and the like. Both natural fibers and chemical fibers can be used as materials for the woven and nonwoven fabrics. The nonwoven fabric used as the top sheet 2 is preferably an air-through nonwoven fabric or a spunbond nonwoven fabric.

Alternatively, the top sheet 2 may be a hydrophobic thermoplastic synthetic resin film. For example, it may be a sheet member made of polyethylene (PE) or polypropylene (PP). In this case, the top sheet 2 has a plurality of substantially circular through-holes penetrating in the thickness direction T. As shown in FIG. By providing the through holes, the excrement discharged from the vaginal opening during wearing can be easily moved from the through holes to the absorbent body 10, and the fear of spreading the excrement on the skin side surface of the top sheet 2 can be reduced. In addition, even if the top sheet 2 is subjected to a hydrophilic treatment, this hydrophobic state may be secured.

The second sheet 3 is an "intermediate sheet" arranged between the top sheet 2 and the absorbent body 10. As shown in FIG. The second sheet 3 is a liquid-permeable sheet member and can be exemplified by an air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like.

In the present embodiment, the top sheet 2 and the second sheet 3 are in an integrated state bonded with an adhesive HMA, and wrap the absorbent body 10 so as to wrap the ends in the width direction W thereof. The top sheet 2 is joined and fixed to the non-skin surface side of the absorbent body 10 at the absorbent body joint portion 10a with an adhesive HMA. An absorbent main body 100 is configured by integrating the top sheet 2, the second sheet 3 and the absorbent body 10. As shown in FIG. Note that it is not necessary to apply the adhesive to the entire area of the adhesive HMA for joining and fixing the respective members. In particular, by adjusting the amount, area, and application pattern of the adhesive applied as the adhesive HMA between the top sheet 2 and the second sheet 3, the absorbent main body 100 has a pair of main body joint portions 5a, which will be described later. The flexibility of the outer side in the width direction W can be ensured, and the touch can be improved.

The body joint portion 5a joins the absorbent body 100 and the non-skin side sheet. In this embodiment, the non-skin-side surface of the absorbent main body 100 and the skin-side surface of the side sheet 5 are joined at the main body joining portion 5a using an adhesive such as hot melt. As shown in FIG. 1, the body joint portion 5a has a continuous shape along the front-rear direction L. As shown in FIG. The main body joint portions 5a are arranged at both ends in the width direction W at symmetrical positions with respect to the center line XX in the width direction W of the napkin 1. As shown in FIG. In this embodiment, the side sheet 5 is described as a non-skin side sheet, but the back sheet 4 may be a non-skin side sheet, or the combination of the back sheet 4 and the side sheet 5 may be a non-skin side sheet. good. Further, another sheet member different from the back sheet 4 and the side sheet 5 may be arranged and joined to the edge including the tip 2he in the width direction W of the top sheet 2 .

As shown in FIG. 4, in a cross section along the width direction W and thickness direction T of the napkin 1, the outermost edge in the width direction W of the top sheet 2 is the skin side edge 2e. A straight line along the width direction W from the skin-side end 2 e may pass through the center 10 c of the absorbent body 10 . The top sheet 2 has a pair of first folded portions 2h in which both side end portions in the width direction W are folded back toward the non-skin surface side T2. The skin-side end 2e is also the outermost end in the width direction W of the first folded portion 2h. The pair of first folded portions 2h are joined to the side seat 5 by the main body joining portion 5a. Width-direction tips 2he of the pair of first folded portions 2h are located inside in the width direction W of the outer edge 5e of the main body joint portion 5a. As a result, the tip 2he (edge) of the top sheet 2 (first folded portion 2h) is not exposed. Therefore, since the tip 2he of the top sheet 2 does not come into contact with the skin of the wearer, it is possible to suppress the deterioration of the feel.

A portion of the top sheet 2 that is outside the absorber 10 in the width direction W and that is closer to the skin surface side T1 than the skin side end 2e in the thickness direction T is the skin surface portion 2s. A portion of the top sheet 2 outside the absorber 10 and on the non-skin surface side T2 from the skin side end 2e in the thickness direction T is the non-skin surface portion 2u. The first folded portion 2h is a portion from a folding start point (folding start point) FL, which is a starting point at which the first folded portion 2h is folded, to the tip 2he. The bending starting point FL extends in the front-rear direction L. A region from the center of the top sheet 2 in the width direction W to the folding starting point FL is a non-folding region N where the top sheet 2 is not folded. Note that the tip 2he in the width direction W of the top sheet 2 is the tip of the end extending inward in the width direction W of the first folded portion 2h. Therefore, the tip 2he of the top sheet 2 in the width direction W is the inner edge of the end portion extending inward in the width direction W of the portion where the top sheet 2 is folded back.

As shown in FIG. 4, the outermost edge in the width direction W of the second sheet 3 is the intermediate side edge 3e. A straight line along the width direction W from the intermediate side end 3 e may pass through the skin side end 2 e and may pass through the center 10 c of the absorber 10 . The second sheet 3 may have a pair of second folded portions 3h in which both side end portions in the width direction W are folded back toward the non-skin surface side T2. The intermediate side end 3e is also the outermost end in the width direction W of the second folded portion 3h. The lengths of the top sheet 2 and the second sheet 3 in the front-rear direction L may be substantially the same. Further, when the top sheet 2 and the second sheet 3 are unfolded from the state of the absorbent body 100 , the length in the width direction W of the second sheet 3 may be shorter than that of the top sheet 2 .

As shown in FIG. 4 , widthwise tips 3he of the pair of second folded portions 3h may be arranged outside the absorbent body 10 in the widthwise direction W. As shown in FIG. As a result, since the tip 3he of the second folded portion 3h does not contact the absorbent body 10, the excrement absorbed by the absorbent body 10 does not diffuse in the second sheet 3 from the tip 3he of the second folded portion 3h. Diffusion to the outside in the width direction W of the absorber 10 can be suppressed. As a result, exudation of excrement on the outer side in the width direction of the absorbent body can be reduced.

In the state of the absorbent main body 100, the tip 3he of the second folded portion 3h may overlap a part of the main body joint portion 5a in the thickness direction T. As shown in FIG. The tip 3he of the second folded portion 3h may be located inside in the width direction W from the outer edge 5e of the main body joint portion 5a.

A portion of the second sheet 3 that is outside in the width direction W of the absorbent body 10 and that is closer to the skin surface side T1 than the skin side end 2e in the thickness direction T is an intermediate skin surface portion 3s. A portion of the second sheet 3 outside the absorber 10 and on the non-skin surface side T2 from the skin-side end 2e in the thickness direction T is the non-skin surface portion 2u. The second folded portion 3h is a portion extending in the width direction W from the folding starting point FL to the tip 3he.

The back sheet 4 is a liquid-impermeable sheet member and can be exemplified by a polyethylene (PE) resin film or the like. The backsheet 4 has a planar size larger than that of the absorbent body 10 and covers the entire planar surface of the absorbent body 10 . The side sheet 5 is a hydrophobic sheet member and can be exemplified by an air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like. The back sheet 4 and the side sheet 5 are located on the non-skin surface side T2 from the integrated top sheet 2, second sheet 3 and absorbent body 10. As shown in FIG. In addition, in this embodiment, as above-mentioned, the second sheet 3 is demonstrated as a non-skin side sheet. The non-skin side sheet is a sheet arranged on the non-skin side of the absorbent body 10 .

In this embodiment, the wings 1W are formed by the back sheet 4 and the side sheets 5 extending outward from both sides of the top sheet 2 and the like in the width direction W. As shown in FIG. In addition, the form which does not have the wing 1W may be sufficient as the napkin 1. FIG.

The non-skin side of the napkin 1 (that is, the non-skin side of the backsheet 4) may be provided with a central adhesive portion 8, such as coated with an adhesive. 2, ten rectangular center adhesive portions 8 having long sides in the front-rear direction L are arranged at intervals in the width direction W, but the shape and number of the central adhesive portions 8 , and the arrangement is not limited to this. When the napkin 1 is used, the central adhesive portion 8 is attached to the skin side of a wearable article such as underwear, thereby fixing the napkin 1 to the underwear or the like.

Similarly, a wing adhesive portion 9 is provided on the non-skin side (non-skin side T2 of the back sheet 4) in the thickness direction T of each wing 1W. In FIG. 2, the wing adhesive portions 9 are rectangular wing adhesive portions 9 having long sides in the front-rear direction L, but the shape, number, and arrangement of the wing adhesive portions 9 are not limited to this. When the napkin 1 is used, the wings 1W are folded toward the non-skin side, and the wing adhesive portions 9 are adhered to the non-skin side of underwear or the like. As a result, the wing 1W is fixed to the underwear or the like.

The absorbent body 10 is a member that absorbs and holds excrement inside. In this embodiment, the absorbent body 10 has an absorbent core 11, an absorbent polymer sheet 12, and a cover sheet 13, as shown in FIGS. In the absorbent body 10, the absorbent core 11 is arranged on the skin side T1, and the absorbent polymer sheet 12 is arranged on the non-skin side T2. In addition, as shown in FIG. 1, the length in the width direction W of the absorbent core 11 may be longer than the length in the width direction W of the absorbent polymer sheet 12 . The length of the absorbent core 11 in the front-rear direction L may be longer than the length of the absorbent polymer sheet 12 in the front-rear direction L.

The absorbent core 11 is composed of an assembly of liquid absorbent fibers formed into a predetermined shape. Pulp fibers, cellulose-based absorbent fibers, and the like can be exemplified as the aggregated liquid-absorbent fibers. A cover sheet 13 is arranged on the non-skin side of the assembly. The cover sheet 13 is a liquid-permeable sheet member and can be exemplified by an air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like. The absorbent core 11 is fixed to the cover sheet 13 with an adhesive such as hot melt. The length of the cover sheet 13 in the front-rear direction L of the absorbent core 11 and the length in the width direction W of the absorbent core 11 are preferably substantially the same. In this embodiment, the absorbent core 11 is formed in a substantially hourglass shape in plan view. The absorbent core 11 has a shape having a constriction in the central portion in the front-rear direction L. As shown in FIG. Note that the shape of the absorbent core 11 is not limited to this. An absorbent core 11 having a predetermined shape such as a rectangle can be used.

In addition, as shown in FIG. 3, it is not necessary to arrange a sheet such as a liquid-permeable tissue on the skin side of the absorbent core 11 . The liquid-absorbent fibers of the aggregate may be in contact with the second sheet 3 . In general, liquid permeable sheets such as tissues tend to diffuse in the planar direction. Therefore, by not arranging the liquid permeable sheet on the skin side of the absorbent core 11, the liquid is absorbed at the crotch region that contacts the vaginal opening of the wearer. It is possible to reduce the possibility that the discharged excrement spreads on the skin side surface of the absorbent core 11 and leaks from the outside in the width direction W of the napkin 1.例文帳に追加

The absorbent polymer sheet 12 is a sheet-like member in which a superabsorbent polymer 121 (so-called SAP) or the like, which is liquid absorbent particles, is sandwiched between liquid permeable sheets 122 such as tissues from the skin side and the non-skin side. you can

As shown in FIG. 3 and the like, the absorbent body 100 is not fixed to the side sheets 5 on the outer side in the width direction W from the pair of body joint portions 5a. Therefore, even when the wing 1W is fixed to the article to be worn, it can be brought into contact with the wearer's body when worn. This makes it easier for the wearer to make the absorbent body 100 follow the movements of the wearer's crotch and thighs while fixing the wing 1W, that is, the napkin 1 to the article to be worn, thereby improving the wearability of the napkin 1. can be made

Moreover, the napkin 1 may use a hydrophobic resin sheet as the top sheet 2 in order to reduce the possibility that excrement may reach the end of the absorbent body 100 in the width direction W. The hydrophobic resin sheet allows the excrement to fall from the plurality of through-holes provided in the top sheet 2 toward the absorbent body 10 in the thickness direction T while preventing the excrement from diffusing planarly. , making it easier to move the absorber 10 in the thickness direction T. As a result, the excrement can be easily retained by the absorber 10 more quickly.

The napkin 1 has a hydrophobic portion 200 having hydrophobicity. Examples of materials forming the hydrophobic portion 200 include hydrophobic and/or water-insoluble materials, such as hydrophobic inks and oils. The hydrophobic part 200 can be provided by applying it to the member constituting the napkin 1 . For example, the hydrophobic portion 200 may be provided (arranged) by printing. Accordingly, since the hydrophobic portion 200 can be easily provided, it is possible to suppress an increase in production cost due to the provision of the hydrophobic portion 200 .

The method for printing the hydrophobic portion 200 may be flexographic printing or gravure printing. When a colored material (for example, hydrophobic ink) is used as the material forming the hydrophobic section 200, the hydrophobic section 200 may be colored.

The material forming the hydrophobic portion 200 may be a material that hardens when irradiated with ultraviolet (UV) light. As a result, the hydrophobic part 200 is cured in a short time by applying UV light after applying the hydrophobic part 200 by, for example, printing. As a result, it is possible to prevent the hydrophobic part 200 from drying out and the hydrophobic part 200 from being provided on an unintended other member during the manufacture of the napkin 1, thereby preventing the absorption performance from deteriorating.

In addition, when the hydrophobic part 200 is provided on the skin surface or the non-skin surface of the member constituting the napkin 1, the hydrophobic part 200 may be present on the skin surface or the non-skin surface of the member. By permeating into the inside of the members forming the napkin 1, it may exist on the skin side (inside) or the non-skin side (inside) of the members forming the napkin 1. In this embodiment, as shown in FIG. 6, the hydrophobic portion 200 is arranged on the non-skin surface side T2 of the second sheet 3 . In addition, as shown in FIG. 4, in the portion (second folded portion 3h) where the sheet (second sheet 3) provided with the hydrophobic portion 200 is folded back, the hydrophobic portion 200 is arranged on the skin surface side T1. you can

The hydrophobic portion 200 has an outer hydrophobic portion 210 and a central hydrophobic portion 220 . The outer hydrophobic portion 210 is provided outside in the width direction W of the outer edge 10</b>E in the width direction W of the absorbent body 10 . As a result, since excrement is hydrophilic and does not easily pass through the outer hydrophobic portion 210, the exudation of excrement on the outside in the width direction W of the absorbent body 10 can be reduced.

The central hydrophobic portion 220 is provided inside in the width direction W of the outer edge 10E in the width direction W of the absorbent body 10 (absorbent core 11). A central hydrophobic portion 220 is arranged between the top sheet 2 and the absorbent core 11 . In this embodiment, as shown in FIG. 6 , the central hydrophobic portion 220 is arranged on the skin surface side T1 of the second sheet 3 .

As shown in FIG. 1, in a plan view of the napkin 1, the region where the hydrophobic portion 200 is not arranged is the non-hydrophobic region R1, and the region where the hydrophobic portion 200 is arranged is the hydrophobic region R2. Of the hydrophobic region R2, the region where the outer hydrophobic portion 210 is arranged is the outer hydrophobic region R21, and the region where the central hydrophobic portion 220 is arranged is the central hydrophobic region R22.

The napkin 1 also has a functional material arranged between the topsheet 2 and the absorbent core 11 in the thickness direction T. As shown in FIG. The functional material may have an effect by volatilizing the functional material. For example, such functional materials include volatile substances such as cooling agents and fragrances.

Cooling agents may, for example, act on receptor-activated channels (TRPM8) in nerves in the skin. Examples of such cooling agents include menthol (eg, l-menthol) and derivatives thereof (eg, menthyl lactate), methyl salicylate, camphor, cucumber extract, essential oils derived from plants (eg, mint, eucalyptus, nutmeg), and the like. is mentioned. Also, the cooling agent may lower the ambient temperature by the heat of vaporization. Such cooling agents include, for example, alcohols such as methanol and ethanol. These 1 types can be used individually or in combination of 2 or more types.

Perfumes that are commonly used in absorbent articles can be used, and highly volatile ones with a boiling point of about 250°C or less, or medium volatile ones with a boiling point of about 250 to about 300°C are preferred. Used. Moreover, from the viewpoint of maintaining the effect for a long time, it is preferable to use a substance having multiple boiling points as the perfume.

In addition, the functional material may be one that is effective when it comes into contact with excrement (menstrual blood, urine, etc.). Examples of such functional materials include antibacterial agents having antibacterial action and deodorants having deodorant action. In addition, the deodorant may have volatility.

Examples of antibacterial agents include hydroxamic acid derivatives such as piroctone olamine (also known as piroctone ethanolamine), pyridonecarboxylic acid derivatives such as pyromidic acid, pipemidic acid and cinoxacin, and quaternary ammonium compounds such as benzalkonium cetylphosphate. These 1 types can be used individually or in combination of 2 or more types.

As the deodorant, known materials can be used, for example, activated carbon, zeolite, silica gel, alumina, porous glass, etc., and these can be used alone or in combination of two or more. can.

As shown in FIG. 5, the functional portion 300 is arranged along the front-rear direction L. As shown in FIG. The functional part 300 may be arranged up to the front edge of the napkin 1 and may be arranged up to the rear edge of the napkin 1 . When the functional part 300 is a cooling agent, it may be arranged continuously from the front edge to the rear edge of the napkin 1 to enhance the cooling effect.

In a plan view of the napkin 1, the functional region R3 is a region in which the functional portion 300 made of the functional material is arranged. The functional material is arranged in both an overlapping region R32 overlapping the hydrophobic portion 200 in the thickness direction T and a non-overlapping region R31 not overlapping the hydrophobic portion 200 in the thickness direction T. As will be described later, the duration of the effect of the functional material can be improved because the time period during which the functional material exerts its effect differs between the overlapping region R32 and the non-overlapping region R31.

When force is applied to the absorbent body 10 in the thickness direction T, for example, when the body pressure of the wearer is applied in the thickness direction T of the napkin 1, such as when the wearer is sitting while wearing the napkin 1 In order to prevent excrement held in the absorbent body 10 from leaking outside in the width direction W of the napkin 1 due to the absorbent body 10 being crushed, the following configuration may be provided.

YY in FIG. 1 is the wing center YY in the front-back direction L of the wing 1W, and the side edge 11e of the absorbent body 10 and the skin side end 2e of the first folded portion 2h in the width direction W. is the longest distance. Since the length of the absorbent core 11 in the width direction W is longer than the length of the absorbent polymer sheet 12 in the width direction W, the side edges of the absorbent body 10 are the side edges of the absorbent core 11 in the width direction W. edge 11e.

As shown in FIG. 4 and the like, in the cross section of the napkin 1, the outer edges 5e in the width direction W of the pair of main body joint portions 5a are positioned outside the side edges 11e of the absorbent core 11 in the width direction W. there is At this time, the second sheet 3 having the second folded portion 3h covers the entire side surface of the end portion of the absorbent core 11 . The side portion of the absorbent core 11 means the side portion in the width direction W of the absorbent core 11 , and the second sheet 3 covers the entire side surface of the end portion in the width direction W of the absorbent core 11 . However, the second sheet 3 may cover the side surface of the end portion of the absorbent core 11 in the front-rear direction L.

Further, as shown in FIG. 1, the length in the width direction W of the absorbent polymer sheet 12 may be shorter than the length in the width direction W of the absorbent core 11 . As a result, it is possible to further reduce the possibility that the excrement will leak outside in the width direction W of the napkin 1 . When the superabsorbent polymer 121 is sandwiched between liquid-permeable sheets 122 such as tissues, like the absorbent polymer sheet 12, there is a risk that the liquid-permeable sheets 122 may spread excrement outward in the width direction W. be. Even in such a case, by providing the absorbent core 11 longer in the width direction W than the liquid-permeable sheet 122 included in the absorbent polymer sheet 12, the absorbent core 11 can extend in the width direction W of the absorbent polymer sheet 12. Since the absorbent core 11 can absorb the excrement that has reached the outside, the risk of leakage of the excrement to the outside in the width direction W of the napkin 1 can be reduced.

Furthermore, since the length of the absorbent polymer sheet 12 in the width direction W is shorter than the length of the absorbent core 11 in the width direction W, it is possible to easily reduce the presence of excrement on the skin side surface of the napkin 1. . In general, when the absorbent body 10 having the absorbent core 11 and the absorbent polymer sheet 12 absorbs excrement, the absorbent polymer sheet with the superabsorbent polymer is more likely than the absorbent core 11 with the liquid-absorbent fiber. It is often the case that more fecal matter is retained in the case. If a force is applied in the thickness direction T to such an absorbent body 10, there is a risk that the excrement retained on the absorbent polymer sheet 12 may move to the side of the skin. In this regard, since the absorbent core 11 having a width W larger than that of the absorbent polymer sheet 12 is provided on the skin side, the excrement that has moved from the absorbent polymer sheet 12 to the skin surface side T1 is absorbed by the absorbent core 11. can be absorbed and made difficult to reach the skin side of the top sheet 2. - 特許庁This makes it easier to reduce the presence of bodily waste on the surface of the top sheet 2, thereby making it easier to reduce discomfort such as stickiness felt on the skin of the wearer while wearing the top sheet.

As shown in FIG. 1, the napkin 1 may have a pressed portion E in which at least the top sheet 2 and the absorbent core 11 are pressed in the thickness direction T. As shown in FIG. In this embodiment, the pressed part E is a pressed part obtained by pressing the top sheet 2, the second sheet 3, and the absorbent core 11 in the thickness direction T. As shown in FIG. In the compressed portion E, the density of fibers in each member is higher than that in the non-compressed portion. Therefore, the excrement that has reached the pressing portion E is easily moved in the thickness direction T due to the current state of the capillaries. That is, when the excrement absorbed by the portion of the napkin 1 that contacts the vaginal opening of the wearer spreads in the width direction W and reaches the compressed portion E, the excrement moves in the thickness direction T to the absorbent core 11. make it easier to Further, when the compressed portion E extends in the front-rear direction L, the excrement is likely to spread along the compressed portion E. On the other hand, since the absorbent polymer sheet 12 is not compressed in the thickness direction T, the risk of the absorbent polymer being crushed and hardened by compression is reduced, and the excrement transferred from the absorbent core 11 is quickly absorbed. can do.

The pressing section E may have a pair of inner pressing sections E1 and a pair of outer pressing sections E2. The pair of inner compressed parts E1 extends in the front-rear direction L in the central region S3. In a plan view of the napkin 1, the pair of inner compressed parts E1 extends inward in the width direction W on the front side. A pair of inner compression parts E1 are connected in the front region S1. Similarly, the pair of inner pressing portions E1 extends inward in the width direction W on the rear side. A pair of inner compression part E1 is connected in back side area S2. Therefore, in this embodiment, the inner pressing part E1 is annular in plan view of the napkin 1 .

The pair of outer pressing portions E2 are arranged outside in the width direction W of the pair of inner pressing portions E1. It extends in the front-rear direction L in the central region S3. In a plan view of the napkin 1, the pair of outer pressing portions E2 extends inward in the width direction W on the front side. A pair of outer pressing parts E2 are connected in the front region S1. Similarly, the pair of outer pressing portions E2 extends inward in the width direction W on the rear side. A pair of outer pressing parts E2 are connected in the rear region S2. Therefore, in this embodiment, the outer pressing part E2 is annular in plan view of the napkin 1 . Moreover, in plan view of the napkin 1, the pair of outer pressing portions E2 surrounds the inner pressing portion E1.

Moreover, as shown in FIG. 4, the outer edge 5e of the main body joint portion 5a may be positioned inside in the width direction W of the skin-side end 2e. As a result, the amount of flexible movement of the absorbent main body 100 (the first folded portion 2h) increases, so that the contact with the wearer's skin is also improved. Further, the distance D51 from the skin-side end 2e to the outer edge 5e of the body joint portion 5a is the outer edge 10E of the absorbent body 10 (in FIG. 4, the outer edge 11E of the absorbent core 11) from the outer edge 5e of the body joint portion 5a ) may be longer than the distance D52. This allows the absorbent main body 100 to easily follow the movements of the wearer's body. In other words, by widening the soft region in the absorbent main body 100, the absorbent main body 100 becomes flexible and easy to move, and the contact with the wearer's skin is improved.

Further, the outer edge 10E of the absorbent body 10 may be positioned inside in the width direction W from the outer edge 5e of the main body joint portion 5a. When a force directed inward in the width direction W from the wearer's thighs acts on the napkin 1, the wearer's thighs touch the first folded portion 2h and are pushed inward in the width direction by the wearer's thighs. The longer the distance until the first folded portion 2h comes into contact with the absorbent body 10, the less likely the wearer feels the feel of the highly rigid absorbent body, and the higher the cushioning properties. Therefore, by increasing the distance from the first folded portion 2h to the side edge of the absorbent body, it is possible to improve the cushioning property and suppress deterioration of the wearer's touch.

Moreover, the distance D10 from the skin-side end 2e to the outer edge 10E of the absorbent body 10 may be longer than the distance D51. As a result, the distance to contact with the absorber 10 is increased, and the cushioning property is enhanced, so that deterioration of the wearer's touch can be suppressed.

Further, as shown in FIG. 1, the outer edge 10E of the absorbent body 10 has a front maximum edge 10E1, a rear maximum edge 10E2, and a central maximum edge 10E3. The front maximum edge 10E1 is an edge positioned at the maximum width in the front region S1. The rear maximum edge 10E2 is an edge positioned at the maximum width in the rear region S2. The central maximum edge 10E3 is an edge positioned at the maximum width in the central region S3.

The distance D13 from the skin side edge 2e to the central maximum edge 10E3 is the distance D11 from the skin side edge 2e to the front maximum edge 10E1 and the distance D12 from the skin side edge 2e to the rear maximum edge 10E2. too long. Thereby, by lengthening the distance D13, it is possible to increase the cushioning property in the central region S3 that receives the most force from the wearer's thighs, and to suppress deterioration of the wearer's touch.

(3) Hydrophobic part 200
Next, the hydrophobic portion 200 will be described with reference to FIGS. 1 to 6. FIG. In this embodiment, as shown in FIGS. 4 and 6 , the hydrophobic portion 200 is provided on the non-skin surface side T2 of the second sheet 3 .

First, the outer hydrophobic portion 210 will be mainly described. As shown in FIGS. 4 and 6 , the outer hydrophobic portion 210 is provided on the non-skin surface side T2 of the second sheet 3 . As a result, the diffusion of excrement to the top sheet 2 is restricted by the outer hydrophobic portion 210, so that exudation of excrement from the skin surface side T1 of the top sheet 2 that comes into contact with the wearer's skin can be suppressed. It is possible to suppress the deterioration of the wearer's touch due to exudation of excrement. In addition, excrement that has diffused outward in the width direction W from the outer edge 10E of the absorbent body 10 on the top sheet 2 can be easily drawn into the skin surface side T1 of the second sheet 3. can suppress the deterioration of the feel of the skin.

210 s of 1st outer side hydrophobic parts provided on the intermediate|middle skin surface part 3s are provided in the skin surface side T1 rather than the skin side edge 2e. Thus, at least part of the outer hydrophobic portion 210 may be provided closer to the skin surface side T1 than the skin side end 2e. As a result, even if the second folded portion 3h comes into contact with the absorbent body 10 via the first folded portion 2h pushed inward in the width direction by the wearer's thighs, excrement absorbed by the absorbent body 10 will not be absorbed. , is blocked by the first outer hydrophobic portion 210s and can be suppressed from diffusing to the second folded portion 3h. Therefore, it is possible to suppress the seepage to the skin side T1 where the wearer's skin (crotch area) is easily touched. It is possible to suppress the deterioration of the wearer's touch due to exudation of excrement.

Further, the second outer hydrophobic portion 210u provided on the intermediate non-skin surface portion 3u is provided on the non-skin surface side T2 from the skin side end 2e. At least part of the outer hydrophobic portion 210 may be provided on the non-skin surface side T2 from the skin side end 2e. As a result, it is possible to prevent the excrement absorbed by the absorber 10 from oozing out to the non-skin surface side where the wearer's skin (thighs) is likely to come into contact. It is possible to suppress the deterioration of the wearer's touch due to exudation of excrement.

Further, one of the first outer hydrophobic portion 210s and the second outer hydrophobic portion 210u may extend more inwardly in the width direction W than the other outer hydrophobic portion 210 . As a result, by extending one of the outer hydrophobic portions 210 inward in the width direction W, the region where the excrement seeps out is reduced, and the region where the outer hydrophobic portions 210 overlap each other in the thickness direction T is reduced, thereby increasing the rigidity. It is possible to suppress the increase in the wearer's skin texture and suppress the deterioration of the wearer's touch.

Further, the outer hydrophobic portion 210 is provided across the intermediate skin surface portion 3s and the intermediate non-skin surface portion 3u. As a result, even if the second folded portion 3h comes into contact with the absorbent body 10 via the first folded portion 2h pushed inward in the width direction by the wearer's thighs, excrement absorbed by the absorbent body 10 will not be absorbed. , the first outer hydrophobic portion 210s blocks the spread of excrement to the outside in the width direction of the second sheet 3, thereby reducing the exudation of excrement.

In addition, the outer hydrophobic portion 210 is provided continuously on the sheet (the second sheet 3 in the embodiment) in a cross section along the width direction W and the thickness direction T of the napkin 1 . In this embodiment, it is continuous from the non-folded region N to the tip 3he of the second folded portion 3h via the folding starting point FL. Therefore, in a plan view from the skin surface side T1 of the napkin 1, the rigidity of the region where the first outer hydrophobic portion 210s and the second outer hydrophobic portion 210u overlap in the thickness direction T (hydrophobic overlapping region) is increased. As a result, even when force is applied to the inner side in the width direction of the wearer's thighs, the first folded portion 2h can easily maintain the shape of the outer end portion in the width direction W of the absorbent main body 100. It becomes easy to maintain cushioning properties.

In this embodiment, as shown in FIG. 4, the first outer hydrophobic portion 210s extends inward in the width direction W from the second outer hydrophobic portion 210u. By widening the area of the first outer hydrophobic portion 210s provided on the skin surface side T1, which is likely to come into contact with the wearer's skin, it is possible to further suppress deterioration of the feel of the wearer due to exudation of excrement. The second outer hydrophobic portion 210u may extend inward in the width direction W from the first outer hydrophobic portion 210s. In this case, by reducing the outer hydrophobic portion 210 near the crotch of the wearer, it is possible to suppress the rigidity of the skin surface side T1 from increasing, thereby suppressing deterioration of the wearer's touch.

In addition, since the first outer hydrophobic portion 210s extends further inward in the width direction W than the second outer hydrophobic portion 210u, the inner edge in the width direction W of the first outer hydrophobic portion 210s extends closer to the second outer hydrophobic portion 210u. is positioned inside in the width direction W of the inner edge in the width direction W of the . Here, the portion where the outer hydrophobic portion 210 is provided (especially, the hydrophobic portion overlap region) has higher rigidity than the portion where the outer hydrophobic portion 210 is not provided, so that the width direction is increased by the wearer's thighs. When a force is applied to the inner side of the absorbent body 100, first, the outer edge in the width direction W of the absorbent body 100 tends to fold toward the skin surface side T1, starting from the inner edge of the second outer hydrophobic portion 210u. In particular, in the present embodiment, since the second outer hydrophobic portion 210u is provided up to the tip 3he of the second sheet 3, the inner edge (tip 3he) of the second outer hydrophobic portion 210u is likely to break. Furthermore, when force is applied to the inner side in the width direction by the wearer's thighs, the outer edge of the absorbent body 100 tends to break starting from the inner edge of the first outer hydrophobic portion 210s while maintaining its shape. In this way, by shifting the inner edge in the width direction W of the first outer hydrophobic portion 210s and the inner edge in the width direction W of the second outer hydrophobic portion 210u in the width direction W, the outer edge of the absorbent body 100 is It becomes difficult for the part to be crushed, and it becomes easy to maintain the cushioning property. Therefore, the feel of the wearer can be improved.

In addition, the first outer hydrophobic portion 210s extends inward in the width direction W from the bending starting point FL. In this manner, the first outer hydrophobic portion 210s may be provided on the inner side in the width direction W of the folding starting point FL at which the first folding portion 2h is folded. Accordingly, by providing the first outer hydrophobic portion 210s at a portion closer to the absorbent body 10 than the first folded portion 2h and easily in contact with the absorbent body 10, it is possible to suppress deterioration of the wearer's touch due to exudation of excrement. can.

Further, when the outer hydrophobic portion 210 is colored, in a plan view from the skin surface side T1 of the napkin 1, the first outer hydrophobic portion 210s and the second outer hydrophobic portion 210u overlap in the thickness direction T (hydrophobic The color of the outer hydrophobic portion 210 in the non-overlapping region) is the color of the outer hydrophobic portion 210 in the region where the first outer hydrophobic portion 210s and the second outer hydrophobic portion 210u do not overlap in the thickness direction T (hydrophobic portion non-overlapping region). darker than This makes it easier for the wearer to recognize the outer hydrophobic portion 210 on the side portion in the width direction W of the absorbent main body 100, and can give the wearer a sense of security that leakage from the side is difficult. In addition, as described above, the presence of the hydrophobic overlapping region facilitates the maintenance of the cushioning property, so that the wearer can feel comfortable with the touch.

Further, as shown in FIG. 4, the top sheets 2 are not joined together outside the outer edge 10E of the absorbent body 10 in the width direction W. As shown in FIG. As a result, when the top sheets 2 are joined together, the joined top sheets 2 have high rigidity and are less likely to bend along the wearer's skin. Therefore, by not joining the top sheets 2 together, the wearer's touch can be improved without increasing the rigidity of the top sheet 2 .

Further, the second sheets 3 are not joined together outside the outer edge 10</b>E of the absorbent body 10 in the width direction W. As a result, it is possible to improve the feel of the wearer without increasing the rigidity of the second seat 3 .

In the second sheet 3 provided with the outer hydrophobic portion 210, the maximum thickness of the portion inside the outer edge 10E of the absorbent body 10 in the width direction W (more specifically, the portion where the hydrophobic portion 200 is not provided) may be thicker than the maximum thickness of the portion overlapping the outer hydrophobic portion 210 . As a result, in the planar view of the napkin 1, in the region where the absorbent body 10 is arranged, the thickness of the second sheet 3 is increased, so that the top sheet 2 is brought closer to the wearer's skin and excrement is easily absorbed. do. On the other hand, in the area where the absorbent body 10 is not arranged, the top sheet 2 is kept away from the wearer's skin, thereby making it difficult for the excrement to touch the wearer's skin and suppressing deterioration of the wearer's touch. can.

As a method of adjusting the thickness of the sheet, for example, by applying heat to the area where the maximum thickness is desired, the fibers of the sheet may be thermally expanded to increase the bulk of some area. Alternatively, heat may be applied to the sheet from the side where the hydrophobic portion 200 is provided. In this case, the fibers in the region overlapping the hydrophobic portion 200 are protected by the hydrophobic portion 200 and are prevented from expanding. Therefore, while the bulk of the fibers in the region where the hydrophobic portion 200 is not provided increases, the bulk of the fiber in the region where the hydrophobic portion is provided can be maintained.

In addition, the thickness of the sheet can be measured, for example, by the following method.

When the napkin 1 is enclosed in a package or the like, the sample is taken out of the package and left in an atmosphere of 20° C.±2° C. and relative humidity of 60%±5% RH for 12 hours.

A dial gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd. is used as a measuring device. A probe with a diameter of 10 mm is used. Adjust the measuring device so that the measuring pressure against the test piece is 3 g/cm2. Here, 10 samples are measured, and the average value is taken as the sheet thickness.

A sample is separated from the absorber 10 by using a cold spray or the like, using a sheet (top sheet 2, second sheet 3, etc.) on which the hydrophobic part 200 is provided (applied). The thickness of the sheet is measured at a site that is not touched during separation. If the area of the hydrophobic portion 200 does not reach 10 mm×10 mm in plan view, a measurement device capable of measuring the area of the hydrophobic portion 200 may be separately prepared for measurement.

Next, the central hydrophobic portion 220 will be mainly described. As shown in FIG. 6, the functional material (functional portion 300) is arranged on the non-skin surface side T2 of the central hydrophobic portion 220 in the overlapping region R32. As a result, when the effect is obtained by volatilizing the functional material, the movement of the functional material in the overlapping region R32 toward the skin surface is restricted by the central hydrophobic portion 220 . Therefore, it takes time for the functional material in the overlap region R32 to pass through the central hydrophobic portion 220, and it takes more time for the functional material to exert its effect than the functional material in the overlap region R32. On the other hand, the movement of the functional material in the non-overlapping region R31 is not restricted by the central hydrophobic portion 220, and it is easier to move toward the skin surface than the functional material in the overlapping region R32. Therefore, the effect of the functional material in the non-overlapping region R31 is exhibited first, and the effect of the functional material in the overlapping region R32 is exhibited later. Therefore, the duration of the effect of the functional material can be improved because the time period during which the functional material exerts its effect differs between the overlapping region R32 and the non-overlapping region R31.

In addition, when the functional material is effective by contacting excrement (menstrual blood, urine, etc.), in the overlap region R32, the excrement is less likely to diffuse to the non-skin surface side than the central hydrophobic portion 220. . Therefore, the functional material in the non-overlapping region R31 is likely to come into contact with excrement and exhibit its effects. On the other hand, when the amount of excrement is large, the excrement diffuses on the non-skin surface side of the central hydrophobic portion 220 in the non-overlapping region R31 and reaches the functional material in the overlapping region R32. As a result, the functional material in the overlapping region R32 exerts its effect later than the functional material in the non-overlapping region R31. Therefore, the duration of the effect of the functional material can be improved because the time period during which the functional material exerts its effect differs between the overlapping region R32 and the non-overlapping region R31.

As shown in FIG. 6 , the central hydrophobic portion 220 is provided on the non-skin surface side T2 of the second sheet 3 . As a result, the excrement excreted on the top sheet 2 can be quickly absorbed up to the second sheet 3, thereby suppressing deterioration of the wearer's touch due to the excretion and improving the duration of the effect of the functional material. can.

As shown in FIG. 5, the napkin 1 has a central region CR in which the absorbent core 11 is arranged among the regions sandwiched between the pair of wings 1W. The central region CR has a hydrophobic region R2 (central hydrophobic region R22) and a non-hydrophobic region R1. In plan view of the napkin 1, the non-hydrophobic region R1 may overlap the straight line along the front-rear direction L at any location in the central region CR. Therefore, in a plan view of the napkin 1, in the central region CR, the central hydrophobic region R22 does not cover the entire surface of the central region CR, and there is also a non-hydrophobic region R1 in which the central hydrophobic region R22 is not provided. A straight line along the front-rear direction L is formed by the central hydrophobic region R22 and the non-hydrophobic region R1 near the center in the width direction (the region where the central hydrophobic region R22 is arranged so that the floral pattern of the non-hydrophobic region R1 floats). overlapping. On the other hand, the straight line along the front-rear direction L overlaps only the non-hydrophobic region R1 outside the inner compressed portion E1 in the width direction because the central hydrophobic region R22 is not arranged.

Among the regions between the pair of wings, the central region CR where the absorbent core 11 is arranged is generally the region facing the excretory opening (for example, the vaginal opening). In the central region CR, the non-hydrophobic region R1 overlaps with the straight line along the front-back direction L, so excrement diffuses in the front-back direction L and reaches the non-hydrophobic region R1. In the non-hydrophobic region R1, since the central hydrophobic portion 220 is not arranged, the excrement easily reaches the absorbent core 11. As shown in FIG. Therefore, in the central region CR, the central hydrophobic region R22 controls the expression of the effect of the functional material by the central hydrophobic region 220, while the non-hydrophobic region R1 allows the absorbent core 11 to quickly absorb excrement. .

Moreover, the non-hydrophobic region R1 has an annular region inside the front-rear direction L and the width direction W of the inner compressed portion E1 in plan view of the napkin 1 . As a result, even when the excrement spreads in the front-rear direction L and the width direction W on the top sheet 2 in the central hydrophobic region R22, the excrement reaches the non-hydrophobic region R1 and thus reaches the absorbent core 11. becomes easier.

Moreover, as shown in FIG. 5, in plan view of the napkin 1, the central hydrophobic portion 220 may be arranged between the pair of inner compressed portions E1. As a result, when a force directed inward in the width direction is applied to the napkin 1 by the wearer's thighs, the napkin 1 is easily broken along the pair of inner compressed parts E1, and the napkin 1 easily follows the wearer's skin. Become. When the napkin 1 conforms to the wearer's skin and the functional material has volatility, the skin surface side of the napkin 1 approaches the wearer's skin, and the volatilized functional material quickly reaches the wearer's skin. becomes easier. The wearer can readily feel the effects of the functional material.

In addition, compared to the case where the central hydrophobic portion 220 is not provided, the amount of excrement that passes through the central hydrophobic portion 220 and reaches the absorbent core 11 is reduced, but the amount of excrement that does not pass through the central hydrophobic portion 220 is reduced. , in the width direction W to reach the inner pressing portion E1. Since the excrement is drawn into the absorbent core 11 at the inner compressed portion E1, the absorbability of the excrement can be maintained.

In the second sheet 3, which is a sheet provided with the central hydrophobic portion 220, the maximum thickness of the portion overlapping the central hydrophobic portion 220 is thinner than the maximum thickness of the portion outside the central hydrophobic portion 220 in the width direction W. good. Specifically, in the present embodiment, the maximum thickness of the second sheet 3 in the portion overlapping the central hydrophobic region R22 may be thinner than the maximum thickness of the second sheet 3 in the portion overlapping the non-hydrophobic region R1. Since central hydrophobic part 220 is hydrophobic, air permeability tends to deteriorate, so air permeability can be maintained by keeping central hydrophobic part 220 away from the wearer's skin. On the other hand, by increasing the maximum thickness of the portion outside the central hydrophobic portion 220 in the width direction W, the top sheet is likely to come into contact with the wearer's skin, and the portion outside the central hydrophobic portion 220 in the width direction W is more likely to come into contact with the wearer's skin. Facilitates absorption of excrement that migrates to the

Further, as shown in FIG. 1, a compressed portion E may be provided between the central hydrophobic portion 220 and the outer hydrophobic portion 210 in the width direction W. As shown in FIG. When the central hydrophobic part 220 is provided, the amount of excrement passing through the central hydrophobic part 220 and reaching the absorbent body is reduced compared to when the central hydrophobic part 220 is not provided, but the central hydrophobic part 220 is reduced. Excrement that has not passed through moves in the width direction W and reaches the pressing part E. Since the excrement is drawn up to the absorbent core 11 at the pressing portion E, the absorbability of the excrement can be maintained. In addition, even if the excrement spreads in the width direction W within the absorbent core 11, since the central hydrophobic portion 220 and the outer hydrophobic portion 210 are provided, the excrement absorbed by the absorbent body 10 can be transferred to the central hydrophobic portion. 220 and the outer hydrophobic portion 210, the liquid becomes difficult to return to the skin surface side. Therefore, it is possible to suppress deterioration of the wearer's touch due to exudation of excrement absorbed by the absorbent body 10 .

In this embodiment, an inner compressed portion E1 and an outer compressed portion E2 are provided between the central hydrophobic portion 220 and the outer hydrophobic portion 210 . In plan view of the napkin 1, the outer hydrophobic portion 210 surrounds the inner compressed portion E1 on the outer side in the front-rear direction L and the width direction W. Therefore, even if the excrement spreads outward in the width direction W beyond the inner compressed portion E1, the excrement is drawn up to the absorbent core 11 at the outer compressed portion E2, so that excrement absorbability can be maintained.

(4) Modifications Modifications according to the embodiment will be described with reference to FIGS. 7 to 10. FIG. FIG. 7 is a schematic plan view (No. 1) of the napkin 1 according to the modification as viewed from the skin surface side. FIG. 8 is a schematic cross-sectional view of the napkin 1 indicated by arrows A2-A2 in FIG. FIG. 9 is a schematic plan view (No. 2) of the napkin 1 according to the modification as seen from the skin surface side. FIG. 10 is an enlarged schematic plan view seen from the side (skin surface side or non-skin surface side) where the hydrophobic part is applied. FIG. 10A is an enlarged schematic plan view (No. 1) viewed from the side (skin surface side or non-skin surface side) where the hydrophobic part is applied. FIG. 10B is an enlarged schematic plan view (No. 2) viewed from the side (skin surface side or non-skin surface side) where the hydrophobic part is applied. In addition, description similar to that of the above-described embodiment will be omitted as appropriate.

As shown in FIG. 7, the functional part 300 may be arranged up to the front edge of the absorbent body 10 . Also, the functional part 300 may be arranged up to the rear edge of the absorbent body 10 . That is, the functional part 300 does not have to be arranged outside the absorbent body 10 in the front-rear direction L. When the functional material is effective when it comes into contact with excrement, only the area where the absorbent body 10 is arranged, which is the area where the excrement is likely to reach, in the plan view of the napkin 1 The function of the functional material can be efficiently exhibited by arranging it in.

As shown in FIG. 8 , a hydrophobic portion 200 is provided on the non-skin surface side T2 of the second sheet 3 . Therefore, the outer hydrophobic portion 210 is provided on the skin surface side of the second sheet 3 (intermediate sheet). Since the outer hydrophobic part 210 restricts the diffusion of the excrement to the top sheet 2, it is possible to suppress the exudation of the excrement from the skin surface side T1 of the top sheet 2 that comes into contact with the wearer's skin. It is possible to suppress deterioration of wearer's touch due to exudation.

Further, the central hydrophobic portion 220 is provided on the skin surface side of the second sheet 3 . As a result, even if the excrement that has reached the inside of the second sheet 3 diffuses inside the second sheet 3, it is possible to prevent the excrement from seeping out to the skin surface side of the second sheet 3 in the area overlapping with the central hydrophobic part 220.例文帳に追加Therefore, it is possible to improve the duration of the effect of the functional material while suppressing deterioration of the wearer's touch due to exudation of excrement.

A functional portion 300 is provided on the skin surface side T1 of the second seat 3 . Therefore, in the overlap region R32, the functional material (functional portion 300) is arranged closer to the skin surface side T1 than the central hydrophobic portion 220 is. Thereby, when the effect is obtained by volatilization of the functional material, the movement of the functional material in the overlapping region R32 to the non-skin surface side T2 is restricted by the central hydrophobic portion 220. FIG. Therefore, the proportion of the functional material that moves to the non-skin side T2 decreases, and the proportion of the functional material that moves to the skin side T1 increases. Therefore, the functional material in the overlapping region R32 starts volatilizing sooner than the functional material in the non-overlapping region R31 when the wearer wears the absorbent article. It becomes easy to feel. On the other hand, the functional material in the non-overlapping region R31 has a smaller proportion of the functional material moving to the skin surface side than the functional material in the overlapping region R32, so it is delayed from the functional material in the overlapping region R32. Effective. Therefore, the duration of the effect of the functional material can be improved because the time period during which the functional material exerts its effect differs between the overlapping region R32 and the non-overlapping region R31.

When the functional material is effective by contacting excrement (menstrual blood, urine, etc.), in the overlapping region R32, the excretion is less likely to diffuse to the non-skin surface side T2 than the central hydrophobic portion 220. , excrement is likely to come into contact with the functional material in the overlapping region R32. Therefore, the proportion of the functional material in the overlapping region R32 that comes into contact with excrement is higher than that in the non-overlapping region R31, making it easier for the functional material to exhibit its effects. On the other hand, in the non-overlapping region R31, since excreta easily diffuses to the non-skin surface side T2, the ratio of contact of the functional material in the non-overlapping region R31 with excrement is lower than that of the functional material in the overlapping region R32. lower. Therefore, in the non-overlapping region R31, the effective functional material tends to remain. can be demonstrated. Therefore, the duration of the effect of the functional material can be improved because the time period during which the functional material exerts its effect differs between the overlapping region R32 and the non-overlapping region R31.

Further, as shown in FIG. 8, the hydrophobic portion 200 and the functional material (functional portion 300) are provided on the same sheet member (in the embodiment, the second sheet 3), so that the overlapping region R32 and the non-overlapping region R31 The time at which the functional material exerts its effect may be shifted more easily between and.

As shown in FIG. 9 , the hydrophobic part 200 may be provided on the non-skin surface side of the top sheet 2 . For example, the outer hydrophobic portion 210 may be provided on the non-skin surface side T2 of the top sheet 2 . As a result, the outer hydrophobic portion 210 restricts the diffusion of excrement to the skin surface side T1 of the top sheet 2, so that the excrement bleeds from the skin surface side T1 of the top sheet 2 that comes into contact with the wearer's skin. Therefore, it is possible to suppress deterioration of the wearer's touch due to exudation of excrement. In addition, since the outer hydrophobic portion 210 is not provided on the skin surface side T1 of the top sheet 2, the feel of the top sheet 2 is not impaired, and deterioration of the wearer's feel can be suppressed.

In addition, the outer hydrophobic portion 210 is provided on the non-skin surface side T2 of the top sheet 2 . Here, when the hydrophobic portion 200 is provided by applying a liquid material, the hydrophobic portion 200 may be provided on the non-skin surface side T2 at the first folded portion 2h by soaking into the inside of the top sheet 2. be. In this case, the main body joint portion 5a contacts the hydrophobic portion 200, and the main body joint portion 5a in the contacting portion cannot exhibit adhesive performance, and the absorbent main body 100 (top sheet 2) and the non-skin side sheet (side sheet) 5) may reduce the bonding strength. Therefore, the body joint portion 5a may be arranged at a position where it does not come into contact with the outer hydrophobic portion 210 . As a result, the bonding strength between the top sheet 2 and the side sheets 5 can be suppressed from being lowered, and the exudation of excrement from between the top sheet 2 and the side sheets 5 can be suppressed.

In addition, in order to arrange the main body joint portion 5a at a position that does not contact the outer hydrophobic portion 210, the main body joint portion 5a may be arranged at a position that does not overlap the outer hydrophobic portion 210 in the thickness direction T, for example.

Also, the central hydrophobic portion 220 is provided on the non-skin surface side T2 of the top sheet 2 . Accordingly, compared to the case where the central hydrophobic portion 220 is provided on the skin side T1 of the top sheet, the central hydrophobic portion 220 does not come into direct contact with the wearer's skin, so deterioration of the wearer's touch can be suppressed. In addition, even if the excrement that has reached the members (second sheet 3, absorbent body 10, etc.) inside the top sheet 2 diffuses, in the region overlapping with the central hydrophobic portion 220, it will reach the skin surface side T1 of the top sheet 2. Exudation of excrement can be suppressed. Therefore, it is possible to improve the duration of the effect of the functional material while suppressing deterioration of the wearer's touch due to exudation of excrement.

Further, as shown in FIG. 9, the hydrophobic portion 200 and the functional material (functional portion 300) may be arranged so as to be sandwiched between the top sheet 2 and the second sheet 3 in the thickness direction T, for example. That is, the hydrophobic portion 200 (or the functional portion 300) is provided on the non-skin surface side T2 of the top sheet 2, and the functional portion 300 (or the hydrophobic portion 200) is provided on the skin surface side T1 of the second sheet 3 facing the top sheet 2. may be provided. Alternatively, the hydrophobic portion 200 and the functional material (functional portion 300) may be provided on the same surface (skin surface side T1 or non-skin surface side T2) of the same sheet member. For example, after providing the hydrophobic part 200 (or the functional part 300) on the skin side of the second sheet 3, the functional part 300 (or the hydrophobic part 200) may be further provided on the skin side of the second sheet 3. By arranging the hydrophobic part 200 and the functional part 300 adjacent to each other in this way, the effect of restricting the movement of the functional material by the hydrophobic part 200 is enhanced, and the overlapping region R32 and the non-overlapping region R31 are functional. It is possible to make it easier to shift the time when the material exhibits its effect.

As shown in FIG. 10, when the ink forming the hydrophobic portion 200 is arranged by printing, the hydrophobic area R2 may consist of a non-halftone dot area R24 and a halftone dot area R25. The non-halftone dot area R24 is a gap area between a plurality of halftone dots 250 made of ink. A halftone dot region R25 is a region in which a plurality of halftone dots 250 are arranged.

As shown in FIG. 10A, the ratio of the halftone dot region R25 to the central hydrophobic region R22 (the area of the halftone dot region R25/the area of the central hydrophobic region R22) is the ratio of the non-halftone region R24 to the central hydrophobic region R22 (the non-halftone region R24). (area of point region R24/area of central hydrophobic region R22). For example, when flexographic printing is used, the ratio of halftone dot region R25 to central hydrophobic region R22 may be greater than 50% and less than or equal to 100%. The ratio of the non-dotted region R24 to the central hydrophobic region R22 may be 0% or more and 50% or less. As a result, the proportion of the ink forming the central hydrophobic portion 220 in the central hydrophobic region R22 is increased, making it difficult for the functional material to pass through the central hydrophobic portion 220, making it easier to control the effect of the functional material. Therefore, the time at which the functional material exerts its effect tends to be shifted between the overlapping region R32 and the non-overlapping region R31, and the duration of the effect of the functional material can be improved.

As shown in FIG. 10B, the ratio of the halftone dot region R25 to the central hydrophobic region R22 may be less than or equal to the ratio of the non-halftone dot region R24 to the hydrophobic region. For example, when flexographic printing is used, the ratio of the halftone dot region R25 to the central hydrophobic region R22 may be 0% or more and 50% or less. The ratio of the non-dotted region R24 to the central hydrophobic region R22 may be greater than 50% and less than or equal to 100%. As a result, the proportion of the ink forming the central hydrophobic portion 220 in the central hydrophobic region R22 is low, and excrement easily passes through the central hydrophobic portion 220 in the central hydrophobic region R22. easier to reach. As a result, it is possible to achieve both control of the effects of the functional material and absorption of excrement.

The ratio of the non-halftone dot region R24/halftone dot region R25 to the central hydrophobic region R22 is calculated by measuring the area of the non-halftone dot region R24/halftone dot region R25 per unit area of the central hydrophobic region R22. be able to.

Further, when the hydrophobic portion 200 is composed of a plurality of halftone dots 250 in which the ink printed on the napkin 1 is arranged, the density per unit area of the plurality of halftone dots 250 in the central hydrophobic portion 220 is It may be smaller than the density per unit area of the plurality of halftone dots 250 in the hydrophobic portion 210 . In the central hydrophobic part 220, since the density of the plurality of dots 250 is low, the excrement absorbed by the absorbent body 10 is less likely to return to the skin surface side T1 liquid while ensuring the water absorbability of the excrement. As a result, it is possible to prevent deterioration of the feel of the wearer due to exudation of excrement absorbed by the absorbent body even inside the outer edge 10</b>E of the absorbent body 10 in the width direction. On the other hand, on the outside of the absorbent body 10 in the width direction W, the need for water absorption from the skin surface side T1 is low. Therefore, in the outer hydrophobic portion 210, the density of the plurality of dots is increased to further suppress the exudation of excrement absorbed by the absorbent body 10, thereby suppressing deterioration of the wearer's touch.

Also, the density per unit area of the plurality of halftone dots 250 in the outer hydrophobic portion 210 may be smaller than the density per unit area of the plurality of halftone dots 250 in the central hydrophobic portion 220 . In the outer hydrophobic portion 210, since the density of the plurality of dots 250 is low, the rigidity does not become too high even if the outer hydrophobic portion 210 is provided, and the portion outside the outer edge 10E of the absorbent body 10 in the width direction W is It can be suppressed that it becomes difficult to bend along the wearer's skin. It is possible to suppress deterioration of wearer's touch. On the other hand, the central hydrophobic portion 220 makes it difficult for the excrement absorbed by the absorbent body 10 to return to the skin surface side, thereby suppressing deterioration of the feel of the wearer due to exudation of excrement absorbed by the absorbent body 10. can.

The density of halftone dots 250 can be calculated by measuring the number of halftone dots per unit area.

(5) Other Embodiments Although the embodiments of the present invention have been described above, the above embodiments are for facilitating understanding of the present invention, and are not intended to limit and interpret the present invention. do not have. Further, the present invention can be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof. For example, the following modifications are possible.

Although a hydrophobic thermoplastic synthetic resin film is used as the top sheet 2 in the above-described embodiment, the present invention is not limited to this. For example, a hydrophilic sheet member such as nonwoven fabric may be used. Even when a hydrophilic sheet member is used as the top sheet 2 , providing the through holes facilitates the absorption of excrement into the absorbent body 10 .

Further, in the above-described embodiment, as shown in FIG. 3, the first folded portion 2h is sandwiched between the absorbent body 10 and the non-skin side sheet (side sheet 5), but it is not limited to this. . A tip 2he of the first folded portion 2h may be arranged outside in the width direction W of the outer edge 10E of the absorbent body 10 . In this case, the absorbent body 10 may be joined to the non-skin side sheet (side sheet 5).

Further, in the above-described embodiment, the tip 3he of the second folded portion 3h overlaps a part of the main body joint portion 5a in the thickness direction T, but this is not the only option. The tip 3he of the second folded portion 3h does not have to overlap with a portion of the main body joint portion 5a in the thickness direction T. As shown in FIG. The tip 3he of the second folded portion 3h may be positioned outside in the width direction W from the outer edge 5e of the main body joint portion 5a. Since the second sheet 3 does not overlap the body joint portion 5a, the rigidity at the end portion in the width direction W of the body joint portion 5a and the integrated top sheet 2, second sheet 3, and absorbent body 10 can be further reduced. can. As a result, in the wearing state, the top sheet 2, the second sheet 3, and the absorbent body 10 integrated with the napkin 1 fixed to the article to be worn can be easily made to follow the body of the wearer. improve sexuality.

In the above-described embodiment, the pair of body joints 5a has a continuous shape along the front-rear direction L of the napkin 1, and is provided at symmetrical positions about the center line XX in the width direction W of the napkin 1. It is not limited to this. The body joints 5a may be intermittently provided, or may be provided at asymmetrical positions about the center line XX.

In the above-described embodiment, the absorbent body 10 in which the absorbent core 11 and the absorbent polymer sheet 12 are stacked in the thickness direction T is used, but the present invention is not limited to this. For example, the absorbent body 10 may include only the absorbent core 11 or only the absorbent polymer sheet 12 . Moreover, the absorbent core 11 may have an absorbent polymer.

Although the second seat 3 is the intermediate seat in the above-described embodiment, it is not limited to this. The absorbent body 10 may have core wrap sheets sandwiching the absorbent core 11 in the thickness direction T. As shown in FIG. Among the core wrap sheets, the sheet disposed closer to the skin surface side T1 than the absorbent core 11 may be the intermediate sheet. It should be noted that in this case it is possible to replace the second sheet 3 with a core wrap sheet. Moreover, the napkin 1 may have a second sheet 3 and a core wrap sheet.

Moreover, the sheet provided with the hydrophobic portion 200 (the outer hydrophobic portion 210 and/or the central hydrophobic portion 220) is at least one of the top sheet 2, the second sheet 3, and the core wrap sheet. The hydrophobic portion 200 may be provided on a plurality of sheets or may be provided on a single sheet. The hydrophobic portion 200 may be provided only on either the skin side T1 or the non-skin side T2 of the sheet on which the hydrophobic portion 200 is provided, and may be provided on both the skin side T1 and the non-skin side T2. may be provided.

Moreover, the sheet on which the functional portion 300 (functional material) is provided is at least one of the top sheet 2, the second sheet 3, and the core wrap sheet. The hydrophobic portion 200 may be provided on a plurality of sheets or may be provided on a single sheet. The functional portion 300 may be provided only on either one of the skin side T1 and the non-skin side T2 of the seat on which the functional portion 300 is provided, and may be provided on both the skin side T1 and the non-skin side T2. may be provided.

In the case where the functional material is effective when it comes into contact with excrement (for example, an antibacterial agent, a deodorant), for example, the functional part 300 includes the non-skin side T2 of the absorbent core 11, the cover It may be provided on either the skin surface side T<b>1 of the sheet 13 or the non-skin surface side T<b>2 of the cover sheet 13 .

In the above-described embodiment, the functional material is provided inside the outer edge 10E of the absorbent body 10 in the width direction W, but the present invention is not limited to this. The functional material (functional part 300) may be provided inside in the width direction W of the outer edge 10E of the absorbent body 10. As shown in FIG. In this case, the functional material may not overlap the outer hydrophobic portion 210 in the thickness direction T. Alternatively, the functional material may be arranged in both the region overlapping the outer hydrophobic portion 210 in the thickness direction T and the region not overlapping the outer hydrophobic portion 210 in the thickness direction T. FIG.

Although the outer hydrophobic portion 210 is provided in the above-described embodiment, it is not limited to this. The outer hydrophobic portion 210 may not be provided. Moreover, although the top sheet 2 has the first folded portion 2h, it may not have the first folded portion 2h. That is, the top sheet 2 does not have to be folded.

The configurations of the napkin 1 according to the above-described embodiment and modifications can be combined as appropriate. In addition, as described above, the napkin 1 has been described as an example, but it should be noted that any absorbent article may be used, and the napkin 1 can be replaced with an absorbent article.

1: Sanitary napkin (napkin)
1W: Wing 2: Top sheet 2e: Skin side edge 2h: First folded part 2s: Skin part 2u: Non-skin part 3: Second sheet 3e: Intermediate side edge 3h: Second folded part 4: Back sheet 5: Side Sheet 5 a : Main body joint portion 5 e : Outer edge 8 : Central adhesive portion 9 : Wing adhesive portion 10 : Absorbent body 10 a : Absorbent body joint portion 11 : Absorbent core 12 : Absorbent polymer sheet 13 : Cover sheet 100 : Absorbent main body 121 : Super absorbent polymer 122 : Liquid permeable sheet 200 : Hydrophobic portion 210 : Outer hydrophobic portion 220 : Central hydrophobic portion 250 : Halftone dot 300 : Functional portion CR : Central region E : Pressed portion E1 : Inner pressed portion E2 : Outer pressed Part R1: Non-hydrophobic region R2: Hydrophobic region R21: Outer hydrophobic region R22: Central hydrophobic region R24: Non-dotted region R25: Half-dotted region R3: Functional region R31: Non-overlapping region R32: Overlapping region S1: Front side region S2: Rear side area S3: Central area

Claims (14)

a front-rear direction, a width direction orthogonal to the front-rear direction, and a thickness direction;
an absorbent core;
a top sheet disposed on the skin surface side of the absorbent core and facing the wearer's skin;
a functional material disposed between the top sheet and the absorbent core in the thickness direction,
having a hydrophobic portion disposed between the top sheet and the absorbent core and composed of a coloring agent;
The functional material is arranged in both an overlapping region that overlaps the hydrophobic portion in the thickness direction and a non-overlapping region that does not overlap the hydrophobic portion in the thickness direction,
Having a pair of wings extending outward in the width direction from the outer edge of the absorbent core in the width direction and capable of being folded back when the absorbent article is used,
In a plan view of the absorbent article, having a central region in which the absorbent core is arranged among the regions sandwiched between the pair of wings,
The central region has a hydrophobic region in which the hydrophobic portion is arranged and a non-hydrophobic region in which the hydrophobic portion is not arranged,
At least the top sheet and the absorbent core have a compressed portion compressed in the thickness direction,
The pressing section is
a pair of inner compressions;
and a pair of outer pressing portions arranged outside the pair of inner pressing portions in the width direction,
The absorbent article , wherein the hydrophobic region is not arranged outside the inner compressed portion in the width direction in the central region . a joining portion joining the top sheet;
2. The absorbent article according to claim 1, comprising a hydrophobic ink as said hydrophobic portion. 3. The absorbent article according to claim 1, wherein in the overlap region, the functional material is arranged closer to the skin than the hydrophobic portion. 4. The absorbent article according to any one of claims 1 to 3, wherein said functional material has volatility. 4. The absorbent article according to any one of claims 1 to 3, wherein said functional material is an antibacterial agent or a deodorant. The absorbent article according to any one of claims 1 to 5, wherein the hydrophobic portion is provided on the non-skin surface side of the top sheet. an intermediate sheet disposed between the top sheet and the absorbent core;
The absorbent article according to any one of claims 1 to 5, wherein the hydrophobic portion is provided on the skin surface side of the intermediate sheet. an intermediate sheet disposed between the top sheet and the absorbent core;
The absorbent article according to any one of claims 1 to 5, wherein the hydrophobic portion is provided on the non-skin surface side of the intermediate sheet. Having the hydrophobic region in which the ink constituting the hydrophobic portion is arranged by printing,
The hydrophobic area is composed of a halftone dot area in which a plurality of halftone dots made of the ink are arranged and a non-halftone dot area that is a gap area between the plurality of halftone dots,
9. The absorbent article according to any one of claims 1 to 8 , wherein the ratio of the dot areas to the hydrophobic areas is greater than the ratio of the non-dot areas to the hydrophobic areas. Having the hydrophobic region in which the ink constituting the hydrophobic portion is arranged by printing,
The hydrophobic area is composed of a halftone dot area in which a plurality of halftone dots made of the ink are arranged and a non-halftone dot area that is a gap area between the plurality of halftone dots,
9. The absorbent article according to any one of claims 1 to 8 , wherein the ratio of said halftone dot area to said hydrophobic area is equal to or less than the ratio of non-dotted area to said hydrophobic area. The functional material has volatility,
a front region, a rear region, and a central region disposed between the front region and the rear region ;
The pair of inner pressing portions extends in the front-rear direction in the central region,
11. The absorbent article according to any one of claims 1 to 10 , wherein the hydrophobic portion is arranged between the pair of inner compressed portions in plan view of the absorbent article. In the sheet arranged on the skin surface side of the absorbent core and provided with the hydrophobic portion, the maximum thickness of the portion overlapping with the hydrophobic portion is the maximum thickness of the portion outside the hydrophobic portion in the width direction. 12. An absorbent article according to any one of the preceding claims, which is less than the maximum thickness. The absorbent article according to any one of claims 1 to 12 , wherein the hydrophobic portion is provided by printing. 14. The absorbent article according to any one of claims 1 to 13, wherein in the overlap region, the functional material is arranged on the non-skin surface side of the hydrophobic portion.

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