JP4950807B2 - Absorbent article and surface liner - Google Patents

Description

  The present invention relates to an absorbent article to be worn in a region including a wearer's crotch, and a surface liner applied to the absorbent article.

  In this type of absorbent article, the excrement of the wearer may spread back and forth and right and left between the skin surface of the wearer and the absorbent article. The spread excrement may leak to the outside from the front, rear, left and right edges of the absorbent article, and adhere to a wide range of the wearer's skin. When excrement adheres to a wide area of the skin surface, it takes time and effort to wipe the absorbent article, and the load of the absorbent article is increased. In particular, in the case of soft stool (liquid stool or stool mixed with liquid and solid components), it is easy to spread between the skin surface of the wearer and the absorbent article and wipes off if it adheres to a wide area of the skin surface. The burden of is great.

  In addition, since the absorbent article is wider in the front-rear direction (vertical direction) than in the left-right direction (lateral direction), if excrement such as loose stool spreads in the front-rear direction, it is excreted in a very wide range. Things need to be wiped off. For this reason, if the spread of excrement such as loose stool can be suppressed in the front-rear direction, the effect of reducing the burden of wiping work is great. Here, the following points are mentioned as the reason why excrement such as loose stool is likely to spread in the front-rear direction (vertical direction). One is that when the absorbent article is applied to the wearer's buttocks, the absorbent article is easily formed with an uneven part extending along the longitudinal direction, and excrement easily moves along the uneven part. It is done. The other is that the spread of excrement in the left-right direction (lateral direction) can be suppressed by three-dimensional gathering, etc., but there were few effective means for suppressing the excrement spread in the front-rear direction. Can be mentioned.

On the other hand, as a conventional absorbent article, one having a top sheet provided with a plurality of openings has been proposed (Patent Document 1). In Patent Document 1, the opening of the top sheet is opened by the tension applied when the absorbent article is attached to the wearer. And a wearer's excrement passes through the said opening to the outer surface side of a top sheet, and is caught by the outer surface side of a top sheet.
JP-T-2002-528174

  However, in the above-mentioned patent document 1, since the surface of the top sheet on the skin surface side is flat, there is no configuration for suppressing excrement from moving along the surface of the top sheet on the skin surface side. For this reason, it cannot stop that excrement diffuses between a wearer's skin surface and an absorptive article.

  Thus, the problem to be solved by the present invention is that the excrement is prevented from diffusing between the skin surface of the wearer and the absorbent article, and the absorbent article and the surface that can reliably capture the excrement. Is to provide a liner.

In order to solve the above-described problem, in the invention of claim 1, the absorbent article is attached to a region including the wearer's crotch, and includes an absorbent core that absorbs excrement, and an outer surface side of the absorbent core. An exterior material to be provided; and an interior material provided on the skin surface side of the absorbent core and facing the absorbent core, wherein the interior material has liquid permeability, and the interior material is at least a partial region. Is provided with a surface sheet exposed on the skin surface side, and at least a part of the area exposed on the skin surface side of the surface sheet is provided with a plurality of cut portions that can be developed three-dimensionally, and the surface sheet is in the vertical direction. A plurality of openings and a three-dimensional concavo-convex structure are formed by opening the cut portion and the cut portion of the topsheet is formed along with the formation of the three-dimensional concavo-convex structure. Part rises to the skin side and Constituting the standing part to prevent flow to the longitudinal direction of the object.

  Moreover, in invention of Claim 2, in the absorbent article which concerns on invention of Claim 1, the said some notch | incision part provided in the said surface sheet is comprised by the said some notch row set, Each said notch row set Is provided in the topsheet along a lateral direction orthogonal to the longitudinal direction, and includes a pair of first and second cut rows, and the first cut row is spaced from the lateral direction. Provided with a plurality of first unit cut portions having a substantially chevron shape with apex portions oriented in the vertical direction, and the second cut rows are spaced along the horizontal direction. A plurality of second unit cut portions provided having a substantially chevron shape whose apex portion is oriented in the longitudinal direction, and the first unit cut portions of the first cut row of each of the cut row sets And the second The second unit cut portion of the cut row refers to the two unit cut portions adjacent to each other of the pair of cut portions and the lateral direction in which the vertex portions are directed in opposite directions in the vertical direction. Are arranged so as to partially overlap with each other, and the top sheet is stretched in the longitudinal direction to open the first and second unit cut portions of the first and second cut rows, The plurality of openings and the three-dimensional concavo-convex structure are formed by rising up and down the inner portion of the apex portion of the notch shape of each cut portion.

  Moreover, in invention of Claim 3, in the absorbent article which concerns on invention of Claim 1 or Claim 2, as for the said surface sheet, the part in which the said several notch part was provided was extended in the said vertical direction In the state, it is joined to another member provided in the absorbent article.

  According to a fourth aspect of the present invention, in the absorbent article according to the second aspect of the invention, the first unit cut portion of the first cut row of the top sheet or the second of the second cut row. An inner portion of the apex portion of the unit cut portion is joined to a member located on the outer surface side of the top sheet in the absorbent article.

  Moreover, in invention of Claim 5, in the absorbent article which concerns on any invention of Claim 1 thru | or 4, the said surface sheet is comprised with a liquid-permeable nonwoven fabric.

  According to a sixth aspect of the present invention, in the absorbent article according to any one of the first to fourth aspects, the top sheet is made of a water-repellent nonwoven fabric.

  Moreover, in invention of Claim 7, in the absorbent article which concerns on invention of any one of Claim 1 thru | or 6, the said interior material is further equipped with the top sheet arrange | positioned at the skin surface side of the said absorption core, The said surface sheet is provided to the skin surface side surface of the said top sheet.

  Moreover, in invention of Claim 8, in the absorbent article which concerns on invention of any one of Claim 1 thru | or 6, the said interior material is arrange | positioned at the skin surface side of the said absorption core, and has a perforated part. The top sheet is disposed between the top sheet and the absorbent core, and a portion of the top sheet provided with the plurality of cut portions is provided through the perforated portion of the top sheet. Exposed to the surface side.

  Moreover, in invention of Claim 9, in the absorbent article which concerns on invention of any one of Claim 1 thru | or 6, the said surface sheet is a top sheet arrange | positioned at the skin surface side of the said absorption core.

  According to a tenth aspect of the present invention, in the absorbent article according to any one of the first to ninth aspects, the interior material is an outer surface side of a portion where the plurality of cut portions of the topsheet are provided. The auxiliary sheet is further bonded to the top sheet in a state where the plurality of cut portions are opened.

Moreover, in invention of Claim 11, it is a surface liner provided to the absorbent article with which a wearer's crotch part is included, Comprising: The base sheet and the three-dimensional provided in the base sheet A plurality of incisable portions that can be developed and applied to the absorbent article in a longitudinally stretched state, whereby the incised portions are opened, and a plurality of openings and a three-dimensional uneven structure are formed. Along with the formation of the three-dimensional concavo-convex structure, a part of the cut portion of the base sheet rises to the skin surface side, and constitutes an upright portion that prevents the excrement from flowing in the vertical direction. .

  Moreover, in invention of Claim 12, it is a surface liner which concerns on invention of Claim 11, Comprising: The adhesion part which is provided in the said base material sheet and adheres to the said absorbent article is further provided.

  According to the first aspect of the present invention, the excrement is formed between the skin surface of the wearer and the absorbent article by the three-dimensional uneven structure formed on the surface sheet provided on the skin surface side of the absorbent article. It is possible to effectively suppress diffusion between the two. As a result, excrement such as loose stool can be prevented from adhering to a wide range of the skin surface of the wearer, and the burden of wiping off excrement can be reduced.

  In addition, the excrement moving along the surface of the absorbent article on the skin surface side is dammed by a three-dimensional uneven structure, so that the excrement can be quickly introduced into a plurality of openings provided in the surface sheet and reliably Can be captured. Thereby, it is possible to more reliably prevent the leakage of excrement.

  In addition, since a plurality of openings and a three-dimensional concavo-convex structure are formed in the surface sheet simply by stretching the top sheet in which a plurality of cut portions are formed in the longitudinal direction, a three-dimensional concavo-convex structure is formed. It is not necessary to apply complicated processing to the surface sheet.

  Moreover, the form of an opening part and a three-dimensional uneven structure can be easily changed by changing the shape, arrangement | positioning, etc. of a notch part.

  According to the second aspect of the invention, since the inner part of the apex part of the cut part in each cut line set formed on the top sheet rises in the vertical direction, It is possible to effectively prevent the flow of liquid components having high fluidity in the vertical direction (front-rear direction).

  According to the third aspect of the present invention, the portion of the top sheet provided with the plurality of cut portions can be held in a state in which the plurality of openings and the three-dimensional uneven structure are formed.

  According to invention of Claim 4, the inner side part of the vertex part of the 1st unit notch part of the 1st notch row | line | column or the 2nd unit notch part of the 2nd notch row | line | column is a surface sheet in an absorbent article Since it is joined to the member located on the outer surface side, the upright posture of the inner portion of the apex portion can be reliably maintained. For this reason, excrement such as loose stool guided to the outer surface side of the surface sheet is more reliably dammed by the inner part of the apex portion of the first or second unit cut portion joined to the member on the outer surface side of the surface sheet. Can be stopped.

  Further, when the top sheet is stretched in the vertical direction and the inner part of the apex portion of the mountain shape of each unit cut portion included in the first and second cut rows rises up and down, Using the inner portion of the apex portion of the first or second unit cut portion joined to the member on the outer surface side as a fulcrum, the portion provided with the plurality of cut portions of the surface sheet is lifted to the skin surface side, A gap can be formed between the member on the outer surface side. Thereby, the accommodation capacity of soft stool or the like guided to the outer surface side of the topsheet through the opening can be improved.

  According to invention of Claim 5, since the surface sheet is comprised with the liquid-permeable nonwoven fabric, the liquid component in excrement can be rapidly permeate | transmitted to the outer surface side of a surface sheet. Thereby, diffusion of excrement can be suppressed and the area where excrement adheres to the wearer's skin surface can be suppressed.

  According to the invention described in claim 6, since the surface sheet is made of a water-repellent nonwoven fabric, the liquid component of excrement once induced on the outer surface side of the surface sheet permeates the surface sheet and is on the skin surface side. Can be prevented from going back to Thereby, it can prevent that the liquid component of the excrement which turned backward adheres to a wearer's skin, and gives discomfort.

  According to the seventh aspect of the present invention, since the topsheet is provided on the skin surface side of the topsheet, the diffusion of excrement is accurately prevented by the three-dimensional uneven structure of the topsheet and the plurality of openings. it can.

  According to the eighth aspect of the invention, since the topsheet is disposed between the topsheet and the absorbent core, it is possible to prevent the topsheet from peeling or dropping.

  According to invention of Claim 9, since a surface sheet serves as a top sheet, the increase in the member which comprises an absorbent article can be suppressed, and the simplification of a manufacturing process and reduction of manufacturing cost can be aimed at.

  According to the invention described in claim 10, the auxiliary sheet is in a state in which a portion where the plurality of cut portions of the topsheet are formed is extended (a plurality of openings and a three-dimensional uneven structure are formed. State) and a portion where the cut portion of the topsheet is formed can be reinforced.

  In addition, the auxiliary sheet can prevent the absorbent core from being exposed to the skin surface via a plurality of openings formed in the top sheet, and can protect the absorbent core.

  According to the eleventh aspect of the invention, by applying the surface liner according to the present invention to the absorbent article, an effect substantially similar to that of the first aspect of the invention can be obtained.

  According to the twelfth aspect of the present invention, the surface liner according to the present invention can be reliably attached to the absorbent article while being stretched in the front-rear direction (longitudinal direction).

  1 is a view as seen from the skin surface side of the absorbent article according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A1-A1 of FIG. 1, and FIG. It is a figure of the surface sheet (top sheet) with which the auxiliary sheet with which an absorbent article is equipped was joined, FIG. 4 is a figure which expands and shows a part of FIG. 2, FIG. 5 is the A2-A2 line | wire of FIG. FIG. In the following, when the absorbent article 1 is mounted so as to cover the wearer's crotch, the direction of the absorbent article 1 corresponding to the front-rear direction of the wearer's crotch (the vertical direction in FIG. 1) It is referred to as “front-rear direction Y” (longitudinal direction), and the direction of the absorbent article 1 corresponding to the left-right direction by the wearer (lateral direction in FIG. 1) is referred to as “left-right direction X” (lateral direction). Moreover, the side of the absorbent article 1 corresponding to the front side (abdomen side) of the wearer's crotch is referred to as “front side”, and the absorbent article 1 corresponding to the back side (rear side) of the wearer's crotch. This side is called the “rear side”. In FIG. 1, the upper side in the figure is the front side of the absorbent article 1.

  The absorbent article 1 shown in FIGS. 1 and 2 is used as a disposable diaper, and a plurality of openings 12 and a three-dimensional concavo-convex structure 13 are formed on a surface sheet 11 constituting a top sheet. . The configuration of the opening 12 and the concavo-convex structure 13 will be described in detail later.

  The absorbent article 1 generally has a structure in which an absorbent body 14 extending in the front-rear direction (longitudinal direction) Y is sandwiched between a top sheet 11 and a back sheet 15 that are top sheets. However, the auxiliary sheet 16 is joined to the outer surface side of the top sheet 11. Thereby, these are laminated | stacked and arrange | positioned in order of the surface sheet 11, the auxiliary sheet 16, the absorber 14, and the back sheet | seat 15 from the skin surface side (refer FIG. 2). By such a laminated structure, the liquid component of excrement passes through the top sheet 11 or passes through the opening 12 thereof, and further passes through the auxiliary sheet 16 and is absorbed by the absorber 14. Prevents oozing out. The interior material according to the present invention corresponds to the surface sheet 11, the auxiliary sheet 16, and the side sheet 17 described later, and the exterior material corresponds to the back sheet 15.

  The top sheet 11 is arranged along the front-rear direction Y at the center in the left-right direction X on the skin surface side of the absorbent article 1. The configurations of the top sheet 11 and the auxiliary sheet 16 will be described later.

  Examples of the absorbent body 14 include an absorbent core formed by mixing a granular polymer absorbent body with a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber, a paper sheet such as tissue paper, or a liquid-permeable nonwoven fabric sheet. And the like, and those formed into a predetermined shape (rectangular shape, hourglass shape, gourd shape, etc.).

  The back sheet 15 is formed using a water-repellent sheet material or a liquid-impermeable sheet material in order to prevent urine or the like absorbed by the absorber 14 from exuding to the outside. For example, a water-repellent nonwoven fabric material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) that is usually used for disposable diapers, or a plastic film (breathable or non-breathable, but more comfortable mode) Is preferably a breathable plastic film) or a laminate of them. In the present embodiment, the back sheet 15 is configured by a breathable plastic film and a nonwoven fabric (for example, a water-repellent nonwoven fabric) bonded to the outer surface side of the breathable plastic film.

  Further, left and right side sheets 17 are provided on both sides of the skin surface side of the absorbent article 1 in the left-right direction X so as to overlap the top sheet 11 along the front-rear direction Y. A thread rubber 18 is disposed at an end of the side sheet 17 on the center side, and a part of the side sheet 17 rises toward the skin surface side by the contraction of the thread rubber 18 and functions as a side three-dimensional gather. Side leakage of excrement is prevented by this side solid gather. Examples of the material for the side sheet 17 include a water-repellent nonwoven fabric or a laminate of a water-repellent nonwoven fabric and a liquid-impervious plastic film.

  Next, the configuration of the top sheet 11 will be described. 3 to 5, the top sheet 11 is a sheet-like member having a rectangular outer shape that is long in the front-rear direction Y, and is provided with a plurality of cut row sets 21 that can be developed three-dimensionally. Each incision row set 21 has a pair of first and second incision rows 22 and 23, respectively. Further, the cut row set 21 is formed in a section 24 (region applied to the wearer's buttocks) that is offset to the rear side of the topsheet 11. Hereinafter, this section 24 is referred to as a notch forming section. This prevents the plurality of openings 12 and the concavo-convex structure 13 of the surface sheet 11 from contacting the wearer's abdomen and preventing the wearer from feeling uncomfortable.

  And the notch formation area 24 of the surface sheet 11 is extended in the front-back direction Y, and the 1st and 2nd notch row | line | columns 21 and 22 of each incision row | line | column set 21 are opened in the front-back direction Y, and several opening is carried out. The part 12 and the concavo-convex structure 13 are formed. In addition, the some notch part which concerns on this invention is comprised by the some 1st and 2nd notch row | line | columns 21 and 22. FIG.

  FIG. 6 is a view showing a state before the surface sheet is stretched, and FIG. 7 is an enlarged view showing a part of FIG. First, the configuration before the first and second cut rows 21 and 22 are developed will be described with reference to FIGS.

  As shown in FIGS. 6 and 7, the first and second cut rows 22 and 23 of each cut row set 21 are provided to face the front-rear direction Y. For this reason, in the cut forming section 24, the first cut rows 22 and the second cut rows 23 are alternately arranged in the front-rear direction Y. The first and second cut rows 22 and 23 are provided with a plurality of first and second unit cut portions 26 and 27 having a substantially chevron shape provided at intervals along the left-right direction X. ing.

  In the example shown in FIGS. 6 and 7, the unit cut portions 26 and 27 have a substantially U-shape in which the apex portions 26 a and 27 a have an arcuate round shape. Various shapes can be used for the various shapes. This point will be described later with reference to FIGS. 15 (a) and 15 (b).

  In each cut row set 21, a first unit cut portion 26 and a second unit cut portion 27 are provided such that their vertex portions 26a, 27a face the opposite side in the front-rear direction Y. For example, the vertex portion 26a of the first unit cut portion 26 faces the wearer's front side, and the vertex portion 27a of the second unit cut portion 27 faces the wearer's rear side.

  Further, in each cut row set 21, the first unit cut portion 26 and the second unit cut portion 27 are adjacent to the cut rows 22 and 23 on the other side whose hem portions 26b or 27b form a pair. The two unit cut portions 27, 27 or 26, 26 are arranged so as to overlap each other in the left-right direction X. More specifically, the bottom portion 26b of the first unit cut portion 26a and the bottom portion 27b of the second unit cut portion 27 are arranged so as to overlap in the front-rear direction Y.

  With such a configuration of the notch row set 21, the notch forming section 24 of the top sheet 11 expands and contracts as the unit notch portions 26 and 27 are opened and closed. Then, the notch forming section 24 of the top sheet 11 is extended in the front-rear direction Y, the unit notch portions 26, 27 are opened in the front-rear direction Y, and the apex portions 26a, 27a of the substantially angle-shaped unit notch portions 26, 27 are formed. As shown in FIG. 8, a plurality of openings 12 and a three-dimensional uneven structure 13 are formed in the notch formation section 24 by rising the inner portions (standing portions 28 and 29) of the upper and lower portions. The concave portion of the concavo-convex structure 13 is constituted by a flat portion of the topsheet 11, and the convex portion is constituted by standing portions 28 and 29 rising up and down from the flat portion of the topsheet 11. Since the standing portions 28 and 29 stand up so as to face the front side or the rear side in the front-rear direction Y, it is possible to effectively prevent the flow of the liquid component having high fluidity contained in the soft stool in the front-rear direction Y.

  The opening 12 and the concavo-convex structure 13 are eliminated when the notch forming section 24 is reduced to the original state and the unit notches 26 and 27 are closed.

  Such a surface sheet 11 is formed using a liquid-permeable nonwoven fabric, for example. As the nonwoven material, a point bond nonwoven fabric, an air-through nonwoven fabric, a spunlace nonwoven fabric or the like formed using hydrophilic fibers (cellulose, rayon, cotton, etc.) is used. Or you may use the nonwoven fabric material etc. which made the surface of hydrophobic fiber (a polypropylene, polyethylene, polyester, polyamide, nylon (trademark), etc.) water-permeable by processing with surfactant.

  The auxiliary sheet 16 is joined to the top sheet 11 using a joining means such as a hot melt adhesive so as to cover the cut forming section 24 on the outer surface side of the top sheet 11. More specifically, the auxiliary sheet 16 is joined to the top sheet 11 in a state in which the cut forming section 24 is extended in the front-rear direction Y and the unit cut sections 26 and 27 in the section 24 are opened.

  For this reason, the notch formation section 24 of the topsheet 11 is stretched by the auxiliary sheet 16 and held in a state in which the plurality of openings 12 and the three-dimensional uneven structure 13 are formed. Further, the auxiliary sheet 16 can prevent the absorber 14 from being exposed to the skin surface via the plurality of openings 12 formed in the top sheet 11, and can protect the absorber 14. As a material of the auxiliary sheet 16, a sheet material (for example, a liquid-permeable sheet material) substantially the same as that of the top sheet 11 is used. In addition, by the joining of the auxiliary sheet 16, among the standing parts 28 and 29 rising up and down from the unit cut parts 26 and 27 of the top sheet 11, the standing part 29 on the outer surface side was restrained by the auxiliary sheet 16 and slightly bent. It may become a state.

  Next, the manufacturing process of the surface sheet 11 will be briefly described. First, a plurality of cut row sets 21 are intermittently formed by a cutter in each portion corresponding to a continuous cut forming section 24 in which the topsheet 11 is continuous in the front-rear direction Y. Subsequently, each portion corresponding to the cut portion 24 of the continuum is extended in the continuous direction (front-rear direction Y) of the continuum, and a plurality of openings 12 and a three-dimensional uneven structure 13 are formed in each portion. . Subsequently, the auxiliary sheet 16 is intermittently joined to the continuous body so as to cover each part from the outer surface side. Subsequently, the continuous body is cut for each length corresponding to the top sheet 11. The surface sheet 11 with the auxiliary sheet 16 formed in this way is introduced into the production line of the diaper main body, and is given together with the side sheet 17 to the skin surface side of the diaper main body. At this time, the surface sheet 11 is joined to the other component members (for example, the absorber 14 and the back sheet 15) of the diaper while the cut forming section 24 is extended.

  Thus, the surface sheet 11 in which the plurality of openings 12 and the three-dimensional uneven structure 13 are configured is located on the skin side with respect to the laminated structure of the absorber 14 and the back sheet 15 and is exposed to the surface. become. Further, the cut forming section 24 is provided at a position slightly offset to the rear side of the top sheet 11 with the wearer as a reference. For this reason, the plurality of openings 12 and the three-dimensional concavo-convex structure 13 formed in the topsheet 11 reliably receive excrement such as soft stool of the wearer without causing discomfort to the wearer's abdomen. Can do.

  The function and the like of the absorbent article 1 will be described by taking, as an example, a case where loose excreta including a liquid component such as stool and a fixed component is excreted when the absorbent article 1 is used. Since such loose excrement tends to flow in a state where the liquid component and the solid component are mixed, diffusion of the absorbent article 1 in the front-rear direction Y is particularly problematic.

  Therefore, in this absorbent article 1, by providing a plurality of openings 12 and a three-dimensional uneven structure 13 on the top sheet 11 constituting the top sheet, it is possible to suppress the diffusion of loose excrement. That is, the excrement is received by the notch forming section 24 provided with the plurality of openings 12 and the three-dimensional uneven structure 13 of the topsheet 11. At this time, the fluid component of the excrement is provided with the concavo-convex structure while the spread in the front-rear and right-and-left directions is effectively dammed by the upright portions 28 and 29 (particularly the upright portion 28 on the skin surface side) forming the concavo-convex structure 13. 13 recesses and the opening 12 hold it.

  In addition, the excrement guided through the opening 12 of the topsheet 11 or to the outer surface side of the topsheet 11 through the topsheet 11 is absorbed by the absorber 14 and its solids. The component is reliably held between the top sheet 11 and the auxiliary sheet 16. At this time, also on the outer surface side of the top sheet 11, diffusion of the fluid component of excrement is effectively suppressed by the standing portion 29.

  In particular, in the configuration according to the present embodiment, the upright portions 28 and 29 stand up so as to face the front side or the rear side in the front-rear direction Y, so that the liquid component having high fluidity contained in the stool flows in the front-rear direction Y. It can stop effectively.

  As described above, according to the present embodiment, excrement is absorbed by the wearer's skin surface by the three-dimensional uneven structure 13 formed on the surface sheet 11 provided on the skin surface side of the absorbent article 1. It can suppress effectively that it diffuses between property articles. As a result, excrement such as loose stool can be prevented from adhering to a wide range of the skin surface of the wearer, and the burden of wiping off excrement can be reduced.

  Moreover, the excrement which moves along the skin side surface of the absorbent article 1 is dammed by the three-dimensional uneven structure 13 so that the excrement can be quickly introduced into the plurality of openings 12 provided in the top sheet 11. Can be reliably captured. Thereby, it is possible to more reliably prevent the leakage of excrement.

  Further, since the plurality of openings 12 and the three-dimensional concavo-convex structure 13 are formed in the topsheet 11 simply by stretching the topsheet 11 formed with the plurality of cut row sets 21 in the front-rear direction Y, the three-dimensional It is not necessary to perform complicated processing on the top sheet 11 in order to form the rough structure 13.

  Moreover, the form of the opening part 12 and the three-dimensional uneven structure 13 can be easily changed by changing the shape and arrangement of the unit cut parts 26 and 27 of the cut line set 21.

  Further, each of the incision row sets 21 formed in the top sheet 11 forms upstanding portions 28 and 29 that rise to face the front side or the back side in the front-rear direction Y. Can be effectively prevented from flowing in the front-rear direction Y.

  Moreover, since the surface sheet 11 is comprised with the liquid-permeable nonwoven fabric, the liquid component in excrement can be permeate | transmitted to the outer surface side of the surface sheet 11 quickly. Thereby, diffusion of excrement can be suppressed and the area where excrement adheres to the wearer's skin surface can be suppressed.

  Moreover, since the surface sheet 11 provided with the three-dimensional uneven structure 13 or the like also serves as a top sheet, an increase in members constituting the absorbent article 1 can be suppressed, and the manufacturing process is simplified and the manufacturing cost is reduced. Can be planned.

  Further, the auxiliary sheet 16 is joined to the cut forming section 24 of the top sheet 11 from the outer surface side. Therefore, the auxiliary sheet 16 can keep the cut forming section 24 of the top sheet 11 in a state extended in the front-rear direction Y (a state in which the plurality of openings 12 and the three-dimensional uneven structure 13 are formed). At the same time, the cut forming section 24 of the top sheet 11 can be reinforced.

  Further, the auxiliary sheet 16 can prevent the absorber 14 from being exposed to the skin surface via the plurality of openings 12 formed in the top sheet 11, and can protect the absorber 14.

  In addition, in the absorbent article 1 which concerns on this embodiment, although the surface sheet 11 which has the three-dimensional uneven | corrugated structure 13 grade | etc., Was set as the top sheet, even if the surface sheet 11 is set as a structure separate from a top sheet. Good. In this case, the auxiliary sheet 16 may be omitted.

  For example, as shown in FIG. 9, the structure which joins the surface sheet 11 to the skin surface side of the top sheet 19 is mentioned. Alternatively, as shown in FIG. 10, there is a configuration in which a perforated portion 19 a is provided in a region behind the front and rear direction Y of the top sheet 19 and the topsheet 11 is joined to the outer surface side of the topsheet 19. In the configuration of FIG. 10, the topsheet 11 is disposed between the topsheet 19 and the absorber 14, and the plurality of openings 12 and the three-dimensional uneven structure 13 formed in the topsheet 11 are holes in the topsheet. It exposes to the skin surface side of the absorbent article 1 through the perforated part 19a. In this configuration, since the topsheet 11 is disposed between the topsheet 19 and the absorber 14, it is possible to prevent the topsheet 11 from being peeled off or dropped off. In addition, the auxiliary sheet | seat 16 is abbreviate | omitted in the structure of FIG.9 and FIG.10.

  Moreover, the structure shown in FIG.11 and FIG.12 is employable as another modification regarding the surface sheet 11. FIG. 11 and 12, the auxiliary sheet 16 is omitted, and one of the first and second cut rows 22 and 23 of each cut row set 21 formed on the top sheet 11 (here Then, the members in which the inner portions (standing portions 28, 29) of the vertex portions 26a, 27a of the unit cut portions 26, 27 of the first cut row 22) are located on the outer surface side of the topsheet 11 in the absorbent article 1 are described. (For example, the absorber 14) is joined by a joining means such as a hot melt adhesive. In FIG. 11 and FIG. 12, the inner side portions (standing portions 29) of the vertex portions 26 a and 27 a of the unit cut portions 26 and 27 of the first cut row 22 of each cut row set 21 are the skin side surface of the absorbent body 14. To be joined.

  FIG. 11 shows a state before the top sheet 11 is stretched in the front-rear direction Y by the plurality of cut row sets 21, and bonding for raising the standing portion 29 to the hatched portion of FIG. 11. The agent is applied. The upright portions 29 are joined to the absorber 14 as the cut forming section 24 is extended in the front-rear direction Y and the topsheet 11 is joined to the absorber 14.

  For this reason, each standing part 29 joined to the absorber 14 of the topsheet 11 can be securely held in the standing posture, and thereby more reliably excrement such as loose stool guided to the outer surface side of the topsheet 11 is more reliably dammed. Can be stopped.

  Further, with the upright portion 29 of the topsheet 11 as a fulcrum, the notch forming section 24 of the topsheet 11 can be lifted to the skin surface side, and an appropriate gap space can be formed. As a result, it is possible to improve the accommodation capacity for accommodating the solid component of excrement such as loose stool guided to the outer surface side of the top sheet 11 through the opening 12 between the top sheet 11 and the absorbent body 14.

  11 and 12, each of the other one of the first and second cut rows 22 and 23 (here, the second cut row 23) of each cut row set 21 in the topsheet 11. A thread-like or belt-like elastic member 31 is provided in an extended state so that inner portions (standing portions 28 and 29) of the vertex portions 26a and 27a of the unit cut portions 26 and 27 are vertically cut in the front-rear direction Y. In this case, the top sheet 11 is configured by bonding two sheet materials together with the elastic member 31 sandwiched therebetween. As a material of the elastic member 31, an elastic elastic material (for example, polyurethane yarn, polyurethane film, natural rubber, etc.) used for a normal disposable diaper is used. The elastic member 31 is bonded to the top sheet 11 using a bonding means such as a hot-melt adhesive, thermal welding, ultrasonic welding or the like when in the stretched state.

  In the configuration in which the elastic member 31 is provided in this manner, as shown in FIG. 13, when each cut row set 21 is extended in the front-rear direction Y, the upright portion 28 is reliably secured by the contraction force of the elastic member 31. Can stand. Thereby, the damming effect of excrement such as loose stool is further enhanced. The elastic member 31 is not essential and may be omitted.

  Moreover, in the above-mentioned embodiment, although the surface sheet 11 was comprised with the liquid-permeable nonwoven fabric, you may comprise the surface sheet 11 using the plastic film etc. which have a water-repellent nonwoven fabric or a through-hole. In this case, it is possible to prevent the liquid component of excrement once induced to the outer surface side of the surface sheet 11 from passing through the surface sheet 11 and returning to the skin surface side. Thereby, it can prevent that the liquid component of the excrement which turned backward adheres to a wearer's skin, and gives discomfort.

  FIG. 14 is a view seen from the skin side of the surface liner according to the second embodiment of the present invention. The surface liner 41 according to the present embodiment has the same configuration as the surface sheet 11 according to the above-described embodiment with respect to the configuration of the cut row set 21 and the like. Therefore, the same reference numerals are assigned to portions of the surface liner 41 that have the same configuration as the surface sheet 11 and description thereof is omitted.

  The surface liner 41 is attached to the skin surface side surface of the absorbent article in order to enhance the collection function of highly fluid excrement such as loose stool of the absorbent article such as disposable diapers. Therefore, as shown in FIG. 14, the base sheet 42 constituting the top liner 41 is provided with a cut forming section 24 having the same configuration as the cut forming section 24 of the top sheet 11 described above. Thus, the plurality of openings 12 and the three-dimensional uneven structure 13 are formed in the surface liner 41 by extending the cut forming section 24 in the front-rear direction Y.

  Moreover, the attachment parts 43 and 44 for making the surface liner 41 adhere to the skin surface side surface of an absorbent article are provided in the both ends of the front-back direction Y in the outer surface side surface of the base material sheet 42, and the like. For the attachment portions 43 and 44, a sheet-like hook material provided with a plurality of hooks used for a hook-and-loop fastener, an adhesive sheet, or the like is used. In addition, you may provide the adhesion parts 43 and 44 also in the right-and-left both sides of the intermediate part in the front-back direction Y of the base material sheet 42, etc.

  And when using this surface liner 41, the surface liner 41 is extended in the front-rear direction Y, a plurality of cut row sets 21 are developed, a plurality of openings 12 and a three-dimensional uneven structure 13 are formed, In this state, the attachment parts 43 and 44 are attached to the skin side surface (for example, the surface of the top sheet) of the absorbent article 1. Thereby, the spread of excrement having high fluidity such as loose stool is effectively blocked and collected by the surface liner 41.

  In addition, about the structure of the notch part provided in the notch formation area 24 of the above-mentioned surface sheet 11 or the surface liner 41, not only the above-mentioned structure, but when it is extended in the front-back direction Y, it expand | deploys three-dimensionally. Any one can be used as long as it can generate a plurality of openings and a three-dimensional concavo-convex structure. For example, the shape of the unit cut portions 26 and 27 of the first and second cut rows 22 and 23 may be substantially rectangular as shown in FIG. 15 (a), or as shown in FIG. 15 (b). It may be substantially triangular, or it may be substantially semicircular (including substantially semielliptical).

It is the figure seen from the skin side of the absorptive article concerning a 1st embodiment of the present invention. It is sectional drawing along the A1-A1 line of FIG. It is a figure of the surface sheet (top sheet) with which the auxiliary sheet with which the absorbent article of FIG. 1 is equipped was joined. It is a figure which expands and shows a part of FIG. It is sectional drawing along the A2-A2 line of FIG. It is a figure which shows the state before a surface sheet is extended. It is a figure which expands and shows a part of FIG. It is a perspective view which shows the state by which the cut formation area of the top sheet of FIG. 6 was extended. It is a figure which shows the 1st modification of structure, such as a surface sheet shown in FIG. It is a figure which shows the 2nd modification of structure, such as a surface sheet shown in FIG. It is a figure which shows the 3rd modification of structure, such as a surface sheet shown in FIG. FIG. 12 is a cross-sectional view illustrating a state in which a cut forming section of the top sheet of FIG. 11 is extended and a vertex portion of a unit cut portion is bonded to a predetermined bonding target. It is a perspective view which shows the structure of the periphery of the standing part which stood up on the skin surface side of the surface sheet in the state of FIG. It is the figure seen from the skin surface side of the surface liner which concerns on 2nd Embodiment of this invention. (A), (b) is a figure which shows the modification of the 1st and 2nd notch row | line | column provided in a surface sheet or a surface liner.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Absorbent article, 11 Surface sheet, 12 Opening part, 13 Concavity and convexity structure, 14 Absorber, 15 Back sheet, 16 Auxiliary sheet, 17 Side sheet, 18 Thread rubber, 19 Top sheet, 19a Perforated part, 21 Notch row set , 22 1st cut row, 23 2nd cut row, 24 cut formation section, 26 1st unit cut portion, 27 2nd unit cut portion, 26a, 27a vertex portion, 26b, 27b hem portion, 28, 29 Standing part, 31 Elastic member, 41 Surface liner, 42 Base material sheet, 43, 44 Adhering part, X Left-right direction, Y Front-back direction.

Claims (12)

An absorbent article to be worn in an area including the wearer's crotch,
An absorbent core that absorbs excreta;
An exterior material provided on the outer surface side of the absorbent core;
An interior material provided on the skin surface side of the absorbent core, wherein at least a part of the portion facing the absorbent core has liquid permeability;
With
The interior material includes a surface sheet in which at least a part of the region is exposed to the skin surface side,
At least a part of the area exposed on the skin surface side of the topsheet is provided with a plurality of cut portions that can be developed three-dimensionally, and the topsheet is stretched in the vertical direction to open the cut portions. the plurality of openings and three-dimensional relief structure is formed,
Along with the formation of the three-dimensional concavo-convex structure, a part of the cut portion of the top sheet rises to the skin surface side, and constitutes an upstanding portion that prevents the excrement from flowing in the vertical direction. Absorbent article. The absorbent article according to claim 1,
The plurality of cut portions provided in the top sheet are constituted by the plurality of cut row sets,
Each notch row set includes first and second notch rows that are provided in the topsheet along a lateral direction orthogonal to the longitudinal direction and make a pair.
The first cut row is:
Provided with a plurality of first unit cut portions having a substantially chevron shape provided at an interval with respect to the lateral direction and having a vertex portion directed in the longitudinal direction;
The second cut row is
A plurality of second unit cut portions having a substantially chevron shape provided at intervals along the lateral direction and having apex portions oriented in the longitudinal direction;
The first unit cut portion of the first cut row of each of the cut row sets and the second unit cut portion of the second cut row have the vertex portions opposite to each other in the vertical direction. And is arranged so as to partially overlap with the two adjacent unit cut portions of the pair of opposite cut rows that are paired with respect to the lateral direction,
The top sheet is stretched in the longitudinal direction to open the first and second unit cut portions of the first and second cut rows, and the inside of the apex portion of the mountain shape of each cut portion The absorbent article, wherein the plurality of openings and the three-dimensional concavo-convex structure are formed by raising the portion up and down. In the absorptive article according to claim 1 or 2,
The topsheet is bonded to another member provided in the absorbent article in a state where the portion provided with the plurality of cut portions is stretched in the longitudinal direction. Goods. The absorbent article according to claim 2,
An inner portion of the top portion of the first unit cut portion of the first cut row or the second unit cut portion of the second cut row of the top sheet is the top sheet of the absorbent article. An absorptive article characterized by being joined to a member located on the outer surface side. The absorbent article according to any one of claims 1 to 4,
The said surface sheet is comprised with a liquid-permeable nonwoven fabric, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 4,
The said surface sheet is comprised with a water-repellent nonwoven fabric, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 6,
The interior material further includes a top sheet disposed on the skin surface side of the absorbent core,
The said surface sheet is provided in the skin surface side surface of the said top sheet, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 6,
The interior material is
A top sheet that is disposed on the skin side of the absorbent core and has a perforated portion;
The topsheet is disposed between the topsheet and the absorbent core, and a portion of the topsheet provided with the plurality of cut portions is exposed to the skin surface side through the perforated portion of the topsheet. An absorbent article characterized by that. The absorbent article according to any one of claims 1 to 6,
The said surface sheet is a top sheet arrange | positioned at the skin surface side of the said absorption core, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 9,
The interior material is
An auxiliary sheet joined to the outer surface side of the portion provided with the plurality of cut portions of the top sheet;
The said auxiliary sheet | seat is joined to the said surface sheet in the state in which the said some notch part was opened, The absorbent article characterized by the above-mentioned. A surface liner applied to an absorbent article to be attached to an area including a wearer's crotch,
A base sheet;
A plurality of cut portions provided in the base sheet and capable of three-dimensional development;
By being applied to the absorbent article in a longitudinally stretched state, the cut portion is opened, and a plurality of openings and a three-dimensional uneven structure are formed ,
Along with the formation of the three-dimensional concavo-convex structure, a part of the cut portion of the base sheet rises to the skin surface side, and constitutes an upright portion that prevents the excrement from flowing in the vertical direction. And surface liner. The surface liner of claim 11, comprising:
The surface liner further provided with the adhesion part which is provided in the said base material sheet and adheres to the said absorbent article.

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