JP2021132911A - Absorbent article - Google Patents

Abstract

To provide an absorbent article on which a user can easily detect a position in a width direction without visual inspection.SOLUTION: An absorbent article 1 comprises: a top sheet 2; a back sheet 3; and an absorber 4 provided therebetween. On an external surface side of the back sheet 3, a specific region 10 is formed, the specific region being formed of a nonwoven fabric subjected to raising processing or embossment processing, the specific region 10 extends in a cross direction y and is provided on a center of the width direction x of the absorbent article 1. A length of the specific region 10 in the width direction x is 5% or greater and 50% or smaller of a length of in a width direction x of a part having a narrowest width on an intermediate part of the absorbent article 1 in the cross direction y, a length of the specific region 10 in the cross direction y is 50% or greater of a length of the absorbent article 1 in the cross direction y. The specific region 10 may be formed by applying in a planar state, an adhesive agent between a film layer of the back sheet 3 which is formed by laminating a nonwoven fabric layer on an external face side of the film layer and a nonwoven fabric layer.SELECTED DRAWING: Figure 7

Description

The present invention relates to absorbent articles such as disposable diapers and urine pads.

Absorbent articles such as disposable diapers and urine pads are required to be worn at an appropriate position in the wearer's crotch so that excrement such as urine does not leak during use. In particular, tape-type disposable diapers and urine pads that are placed on the skin side of the diaper and used together may be installed at a position shifted from the width direction between the wearer's crotch when worn. obtain. On the other hand, Patent Documents 1 and 2 disclose an absorbent article devised so that the position of the absorbent article in the width direction can be easily recognized. Patent Document 1 includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed between the two sheets, and is correctly mounted on the back portion located at least on the buttocks side of the wearer. A paper diaper provided so that a mark indicating a state can be visually recognized from the outside is disclosed. Patent Document 2 has an absorbent body disposed between the liquid-permeable front sheet, the impermeable back sheet, and these sheets, and the front side portion, the center portion, and the rear side portion are sequentially arranged in the longitudinal direction. The formed absorbent article main body and one of the front side portion and the rear side portion are provided with a knob portion provided along substantially the center in the width direction of the absorbent article main body, and the knob portion is provided. , The body of the absorbent article is folded back near the center in the width direction so as to protrude toward the impermeable back sheet side, and the liquid permeable surface sheets facing each other are joined to each other near the end of the absorber. Disposable absorbent articles have been disclosed.

JP-A-2002-59695 JP-A-2007-98036

In the absorbent articles disclosed in Patent Documents 1 and 2, the position of the absorbent articles in the width direction can be grasped by the marks and the knobs provided on the back sheet. However, it is difficult to visually recognize the mark provided on the back sheet when the absorbent article is attached, and if the back sheet is provided with a knob, there is a concern that the wearer may feel uncomfortable due to the knob. .. Therefore, it is more preferable if the position of the absorbent article in the width direction can be grasped in a form that does not affect the wearing feeling of the absorbent article without visual inspection.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an absorbent article capable of easily detecting a position in the width direction without visual inspection.

The absorbent article of the present invention that has been able to solve the above problems is an absorbent article having a front-rear direction and a width direction, and having a top sheet, a back sheet, and an absorber arranged between them. A specific area composed of a brushed non-woven fabric is provided on the outer surface side of the back sheet, and the specific area is provided extending in the front-rear direction to the central portion in the width direction of the absorbent article to be specified. The length in the width direction of the region is 5% or more and 50% or less of the length in the width direction of the narrowest portion of the middle portion in the front-rear direction of the absorbent article, and the length in the front-rear direction of the specific region is It is characterized in that it is 50% or more of the length of the absorbent article in the anteroposterior direction. The specific region may be composed of an embossed non-woven fabric.

As described above, the absorbent article of the present invention is provided with a specific area composed of a brushed or embossed non-woven fabric on the outer surface side of the back sheet. Therefore, by touching the outer surface side of the absorbent article by hand. , The central portion of the absorbent article in the width direction can be detected with a specific region as a guide. Therefore, when wearing the absorbent article, even if it is difficult for the user or the caregiver to see the absorbent article or the eyesight of the user or the caregiver is weakened, the specific area can be touched by hand. By detecting, it becomes easy to appropriately adjust the position of the absorbent article in the width direction. In addition, since the specific area is formed with a length of 50% or more of the length in the anteroposterior direction of the absorbent article, the specific area can cover the urinary part and anus of the wearer, and when the absorbent article is worn. , It becomes easy to apply the central part of the absorbent article to the urinary part and anus of the wearer in the width direction.

It is preferable that the outer surface side of the back sheet is made of a non-woven fabric, and a specific region is formed on the non-woven fabric. In this case, a specific region can be easily formed on the outer surface side of the back sheet by raising or embossing the central portion in the width direction on the outer surface side of the back sheet.

When the outer surface side of the back sheet is formed of a non-woven fabric and a specific region is formed by raising a part of the non-woven fabric, the back sheet is configured by laminating a non-woven fabric layer on the outer surface side of the film layer, and the non-woven fabric is formed. It is preferable that a specific region is formed in the layer. When the non-woven fabric is brushed, there is a concern that the water resistance of the brushed portion will decrease. However, by forming the skin surface side of the back sheet from the film layer, the non-woven fabric layer on the outer surface side of the back sheet can be formed. Even if the brushing process is applied, the leakage-proof performance of the back sheet can be ensured.

In the absorbent article of the present invention, the back sheet is formed by laminating a non-woven fabric layer on the outer surface side of the film layer, and a specific region is formed by applying an adhesive in a planar manner between the film layer and the non-woven fabric layer. It may be one. In this case, the adhesive applied to the film layer and the non-woven fabric layer enters the fiber gaps of the non-woven fabric layer to increase the rigidity of the back sheet in a specific region. Therefore, when the user, the caregiver, or the like touches the outer surface side of the absorbent article with his / her hand, the position of the specific region can be detected from the difference in the touch.

The specific region preferably extends throughout the anterior-posterior direction of the absorbent article. By providing the specific region in this way, it becomes easy to detect the central portion in the width direction of the absorbent article regardless of the position of the absorbent article in the front-rear direction.

The absorbent article is preferably a tape-type disposable diaper. In this case, the absorbent article is provided with fastening tapes on both sides in the width direction of the rear side portion in the front-rear direction, and the fastening tape is fixed to the outer surface side of the back sheet in the front side portion in the front-rear direction at the time of mounting. A tape will be provided. In particular, when the specific region is composed of a brushed or embossed non-woven fabric, the specific region can also function as a fastening target portion of the hook member of the fastening tape. Therefore, for example, when the absorbent article is discarded after the absorbent article is used, the absorbent article is folded or rolled in the front-rear direction, and the hook member of the fastening tape is fixed to a specific area. Can be kept folded or rolled back and forth.

The specific area is provided on the outer surface side of the backsheet and is composed of a brushed or embossed non-woven fabric, the target tape is provided on one side and the other side in the width direction, and the specific area is provided on one side in the width direction. It may be provided so as to exist between the target tapes provided on the other side. By providing the target tape and the specific area in this way, when the absorbent article, which is a tape-type disposable diaper, is attached, the specific area can be used as the fastening target portion of the hook member of the fastening tape together with the target tape.

In the absorbent article of the present invention, by touching the outer surface side of the absorbent article with a hand, the central portion in the width direction of the absorbent article can be detected with a specific region as a guide. Therefore, when wearing the absorbent article, even if it is difficult for the user or the caregiver to see the absorbent article or the eyesight of the user or the caregiver is weakened, the specific area can be touched by hand. By detecting, it becomes easy to appropriately adjust the position of the absorbent article in the width direction.

An example of the absorbent article of the present invention is shown, and a plan view of the absorbent article as viewed from the skin surface side is shown. A plan view of the absorbent article shown in FIG. 1 as viewed from the outer surface side is shown. It represents a III-III cross-sectional view of the absorbent article shown in FIGS. 1 and 2. Another example of the absorbent article of the present invention is represented, and the plan view of the absorbent article viewed from the outer surface side is shown. FIG. 4 shows a VV cross-sectional view of the absorbent article shown in FIG. Another example of the absorbent article of the present invention is represented, and the plan view of the absorbent article as viewed from the skin surface side is shown. A plan view of the absorbent article shown in FIG. 6 as viewed from the outer surface side is shown. FIG. 6 shows a VIII-VIII cross-sectional view of the absorbent article shown in FIGS. 6 and 7. A still another example of the absorbent article of the present invention is shown, and a plan view of the absorbent article as viewed from the outer surface side is shown.

The absorbent article of the present invention has a top sheet, a back sheet, and an absorber provided between them. The absorbent article of the present invention can be applied to disposable diapers, urine pads and the like.

The absorbent article has a front-back direction and a width direction. The anteroposterior direction means a direction extending in the anteroposterior direction of the wearer's crotch when the wearer wears the absorbent article. The width direction means a direction that is on the same plane as the absorbent article and orthogonal to the front-rear direction, and corresponds to the left-right direction of the wearer when the absorbent article is worn. Further, the thickness direction is the direction perpendicular to the surface formed from the front-rear direction and the width direction. Further, when the wearable article is worn by the wearer, the side facing the skin to the wearer is the skin surface side, and the opposite side is the outer surface side.

The shape of the absorbent article is not particularly limited. When the absorbent article is a urine pad, the shape of the absorbent article is shown to be substantially rectangular, oval, hourglass-shaped, battledore-shaped or the like. When the absorbent article is a disposable diaper, the disposable diaper is composed of, for example, an anterior and posterior portions and an intermediate portion located between them and provided with an absorber.

Disposable diapers are tape-type disposable diapers that are provided with fastening tapes on both sides in the width direction of the rear side, and are formed in the shape of pants when worn, or the front and rear sides are joined together. This may be a pants-type disposable diaper in which a waist opening and a pair of leg openings are formed.

The top sheet is a sheet arranged on the skin surface side of the absorbent body, and is provided so as to face the wearer's skin when the absorbent article is worn. The top sheet is preferably liquid permeable. Examples of the top sheet include non-woven fabrics formed from hydrophilic fibers such as cellulose, rayon and cotton; and hydrophobicity such as polyolefins (eg polypropylene, polyethylene), polyesters (eg PET) and polyamides (eg nylon). A non-woven fabric formed from fibers, in which the surface of the hydrophobic fibers is hydrophilized by a surfactant, or the like can be used. Further, as the top sheet, a woven fabric, a knitted fabric, a perforated plastic film or the like may be used.

The back sheet is a sheet arranged on the outer surface side of the absorber, and is provided so as to be located on the side opposite to the wearer when the absorbent article is worn. The backsheet is preferably provided so as to form at least a portion of the outer surface side of the absorbent article. The backsheet is preferably liquid impermeable. As the back sheet, a non-woven fabric formed of hydrophobic fibers such as polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), and polyamide (for example, nylon), a plastic film, or the like can be used. Further, a laminated body of a non-woven fabric and a film may be used as a back sheet, and for example, a laminated body in which a non-woven fabric layer is provided on the outer surface side of the film layer can be used.

As the non-woven fabric constituting the top sheet and the back sheet, spunbonded non-woven fabric, point-bonded non-woven fabric, air-through non-woven fabric, melt blow non-woven fabric, air-laid non-woven fabric, spunlace non-woven fabric, tow-open fiber non-woven fabric, SMS non-woven fabric and the like can be used.

The absorber is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorber, for example, a molded body obtained by molding an absorbent material into a predetermined shape is used, or the molded body is covered with a coating sheet such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable non-woven fabric sheet. Can be used. Examples of the absorbent material include hydrophilic fibers such as pulp fibers and water-absorbent resins such as polyacrylic acid-based, polyaspartic acid-based, cellulosic-based, and starch / acrylonitrile-based. Further, the water-absorbent material may include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-sealing fibers such as polyamide fibers. These heat-sealing fibers may be hydrophilized with a surfactant or the like in order to enhance the affinity with urine or the like.

The absorbent material preferably contains hydrophilic fibers from the viewpoint of increasing the absorption rate of urine and the like. Further, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water-absorbent resin. Therefore, the absorber preferably contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, it is preferable to use an aggregate of hydrophilic fibers mixed or sprayed with a water-absorbent resin.

The absorber may be a sheet-shaped absorber. Examples of the sheet-shaped absorber include those formed so as to have a water-absorbent resin between the non-woven fabrics and not to have pulp fibers. Since the sheet-shaped absorber thus formed has a water-absorbent resin between the non-woven fabrics, a high absorption capacity can be realized. Further, since the sheet-shaped absorber does not have pulp fibers between the non-woven fabrics, it can be formed thin without being bulky.

As the sheet-shaped absorber, water-absorbent fibers may be used as the absorbent material. In this case as well, the sheet-like absorber is formed thin without being bulky. Examples of the water-absorbent fiber include fibers containing a protonated or salt-formed carboxyl group. For example, a water-absorbent fiber can be obtained by hydrolyzing an acrylic fiber to convert a nitrile group contained in the acrylic fiber into a carboxyl group. At this time, it is preferable that the carboxyl group contained in the water-absorbent fiber forms an alkali metal salt or an ammonia salt. Further, the water-absorbent fiber can be produced by immersing the hydrophilic fiber in acrylic acid and precipitating acrylic acid on the fiber surface.

The shape of the absorber (planar shape) is not particularly limited. The shape of the absorber may be appropriately determined according to the intended use, and examples thereof include a substantially rectangular shape, a substantially hourglass shape, and a substantially battledore shape.

On the skin surface side of the absorbent article, rising flaps may be provided on both sides in the width direction. By providing the rising flap, lateral leakage of urine or the like is prevented. The rising flaps are formed, for example, by joining side sheets extending in the front-rear direction to both sides of the top sheet in the width direction and providing elastic members in the inner portion of the side sheets in the width direction. By providing the side sheet and the elastic member in this way, the inner portion of the side sheet in the width direction rises toward the wearer's skin due to the contraction force of the elastic member, and a rising flap is formed. The rising flap or side sheet is preferably made of a liquid-impermeable plastic film, a liquid-impermeable non-woven fabric, or the like.

The backsheet is provided with a specific area extending in the anteroposterior direction at the center of the absorbent article in the width direction. The specific area is provided so that when the user, the caregiver, or the like touches the outer surface side of the absorbent article by hand, the central portion in the width direction of the absorbent article can be detected from the difference in touch.

The specific area can be provided in various ways. For example, a specific area made of a raised or embossed non-woven fabric can be provided on the outer surface side of the back sheet. The non-woven fabric provided with the specific region may be a non-woven fabric constituting the back sheet, or may be provided on the outer surface side of the back sheet as a member separate from the back sheet. In the former case, a specific region is provided on the outer surface side of the back sheet by raising or embossing a part of the region on the outer surface side of the non-woven fabric constituting the back sheet. In the latter case, the brushed or embossed non-woven fabric is attached to the outer surface side of the back sheet to provide a specific area on the outer surface side of the back sheet. In either case, the specific area is exposed on the outer surface side of the absorbent article.

The specific region composed of the brushed non-woven fabric has a fluffy formation on the surface of the non-woven fabric, so that the texture is different from that of the other regions. The specific region composed of the embossed non-woven fabric has a different feel from the other regions due to the uneven pattern formed by the embossing on the surface of the non-woven fabric. In either case, when the user, the caregiver, or the like touches the outer surface side of the absorbent article with his / her hand, the position of the specific area can be detected from the difference in the touch.

As the non-woven fabric forming the specific region, spunbonded non-woven fabric, point-bonded non-woven fabric, air-through non-woven fabric, air-laid non-woven fabric, spunlace non-woven fabric, SMS non-woven fabric and the like are preferably mentioned. When a specific region is formed by brushing, a spunbonded non-woven fabric, a point-bonded non-woven fabric, or an air-through non-woven fabric is preferably used as the non-woven fabric. In these non-woven fabrics, the constituent fibers of the non-woven fabric are bonded by heat welding, so that the constituent fibers are less likely to be detached even if the non-woven fabric is brushed. In addition, the brushing process makes it easier to fluff the surface of the non-woven fabric. When a specific region is formed by embossing, spunbonded non-woven fabric, air-through non-woven fabric, air-laid non-woven fabric, and spunlaced non-woven fabric are preferably used as the non-woven fabric. These non-woven fabrics are likely to form deep irregularities on the surface of the non-woven fabric by embossing.

When the specific region is composed of a brushed or embossed non-woven fabric, it is preferable that the specific region is composed of a non-brushed non-woven fabric or a non-embossed non-woven fabric except for the specific region on the outer surface side of the back sheet. Specifically, when the specific region is composed of a brushed non-woven fabric, it is preferable that the specific region is composed of a non-woven fabric that is not brushed except for the specific region on the outer surface side of the back sheet, and the specific region is embossed. When composed of a non-woven fabric, it is preferable that the non-woven fabric is not embossed except for a specific area on the outer surface side of the back sheet. In this case, the entire outer surface side of the back sheet is made of the non-woven fabric, so that the absorbent article looks good when viewed from the outer surface side, and the entire back sheet feels good.

When the specific region is composed of a brushed or embossed non-woven fabric, it is preferable that the outer surface side of the back sheet is composed of the non-woven fabric and the specific region is formed on the non-woven fabric. In this case, a specific region can be easily formed on the outer surface side of the back sheet by raising or embossing the central portion in the width direction on the outer surface side of the back sheet. In addition, it is possible to improve the air permeability of the back sheet as compared with the case where the specific region is made of a non-woven fabric which is a member different from the back sheet.

When the outer surface side of the back sheet is formed of a non-woven fabric and a specific region is formed by raising a part of the non-woven fabric, the back sheet is configured by laminating a non-woven fabric layer on the outer surface side of the film layer. Is preferable. In this case, a part of the non-woven fabric layer located on the outer surface side of the back sheet is brushed to form a specific region. When the non-woven fabric is brushed, there is a concern that the water resistance of the brushed portion will decrease. However, by forming the skin surface side of the back sheet from the film layer, the non-woven fabric layer on the outer surface side of the back sheet can be formed. Even if the brushing process is applied, the leakage-proof performance of the back sheet can be ensured.

The specific region can also be formed by applying an adhesive in a planar manner between the film layer and the non-woven fabric layer of the back sheet formed by laminating the non-woven fabric layer on the outer surface side of the film layer. In this case, the adhesive applied to the film layer and the non-woven fabric layer enters the fiber gaps of the non-woven fabric layer to increase the rigidity of the back sheet in a specific region. Therefore, when the user, the caregiver, or the like touches the outer surface side of the absorbent article with his / her hand, the position of the specific region can be detected from the difference in the touch. In this case, it is preferable that the backseat has a higher rigidity in a specific region than in other regions. The rigidity of the back sheet can be determined, for example, by measuring the rigidity and softness by the cantilever method.

If the specific area is formed by an adhesive, the adhesive may be solidly applied in the specific area, and the adhesive may be applied to the specific area with a predetermined curved pattern (for example, a spiral pattern, an omega pattern, or a serpentine pattern). May be applied, or the adhesive may be applied to a specific area in the form of short fibers by the curtain spray method. In either case, the adhesive can be applied substantially uniformly over the entire specific area, resulting in the adhesive being applied to the specific area in a planar manner. When the adhesive is applied in a curved pattern or in the form of short fibers, it is preferable to use a hot melt adhesive as the adhesive.

The specific region may be formed by a foamed hot melt adhesive. In this case, since the portion to which the foamed hot melt adhesive is applied can be formed to be raised more than the other portions, when the user, the caregiver, or the like touches the outer surface side of the absorbent article with his / her hand, the back The position of a specific area can be detected from the portion formed by the raised sheet.

When the specific region is formed by the adhesive, the film layer and the non-woven fabric layer may be bonded with an adhesive in the back sheet other than the specific region, but in this case, the coating density of the adhesive in the non-specific region is the specific region. It suffices to be lower than the coating density of the adhesive in. Other than the specific area, the adhesive is preferably applied in a straight line extending, for example, in the anteroposterior or width direction of the absorbent article.

The specific region is provided extending in the anteroposterior direction at the central portion in the width direction of the absorbent article. The central portion of the absorbent article in the width direction means a portion including the center line of the absorbent article in the width direction (center line extending in the front-rear direction). If the specific area is provided in this way, the central portion in the width direction of the absorbent article can be detected by touching the outer surface side of the absorbent article with the specific area as a guide. Therefore, even when it is difficult for the user or the caregiver to see the absorbent article, such as when wearing the absorbent article, or when the eyesight of the user or the caregiver is weakened, the specific area is used as a guide. It facilitates proper adjustment of the widthwise position of the absorbent article. For example, by addressing the absorbent article along the groove of the wearer's buttocks while touching the specific area with the hand, the absorbent article can be appropriately attached to the wearer's crotch. Therefore, the absorbent article of the present invention can be suitably applied to tape-type disposable diapers and urine pads (particularly urine pads placed on the skin side of disposable diapers and used together).

The length of the specific region in the width direction is 5% or more and 50% or less of the length in the width direction of the narrowest portion of the middle portion in the front-rear direction of the absorbent article. It is preferable that the specific region has such a length in the width direction and is continuously provided in the width direction. The length of the specific region in the anteroposterior direction is 50% or more of the length in the anteroposterior direction of the absorbent article. It is preferable that the specific region is continuously provided in the front-rear direction with such a length in the front-rear direction. When the specific region is provided intermittently in the front-rear direction, the length of the intermittent portion is preferably 20 mm or less, and more preferably 10 mm or less. Further, the length of the specific region in the front-rear direction in this case may be 50% or more of the length in the front-rear direction of the absorbent article including the intermittent portion. By providing the specific area as described above, it becomes easy to detect the specific area by touching the outer surface side of the absorbent article with a hand, and it becomes easy to determine the central position of the absorbent article in the width direction based on the specific area. Become. In particular, since the specific area has a length of 50% or more of the length in the anteroposterior direction of the absorbent article, the specific area can cover the urinary part and anus of the wearer, and is absorbable in the urinary part and anus of the wearer. It becomes easy to hit the central part in the width direction of the article.

The length of the specific region in the width direction is more preferably 10% or more, more preferably 15% or more, and further preferably 15% or more of the length in the width direction of the narrowest portion of the middle portion in the anteroposterior direction of the absorbent article. 40% or less is more preferable, and 30% or less is further preferable. The specific region is also preferably provided substantially symmetrically with respect to the widthwise centerline of the absorbent article. The middle portion in the front-rear direction of the absorbent article is, for example, the intermediate portion in the range of 25% to 75% when the front end is 0% and the rear end is 100% as the relative position of the absorbent article. be able to. Alternatively, when the absorbent article has a substantially hourglass-shaped shape, the range in the front-rear direction including the hourglass-shaped constricted portion may be used as the intermediate portion. In this case, the middle portion of the absorbent article is formed narrower than the front side portion and the rear side portion, and the front side portion, the intermediate portion, and the rear side portion can be classified as follows, for example. .. That is, the width direction of the widest part of the front portion of the length and W _F, the length in the width direction of the widest part of the back side and W _R, the width direction of the narrowest portion of the intermediate portion when the length was W _M, the boundary of the front side and the intermediate portion has a length in the width direction and portion which becomes _{(W F + W M) /} 2, the back side and the boundary of the middle portion in the width direction length it can be Saga _{(W R + W M) /} 2 to become places.

The length of the specific region in the anteroposterior direction may be longer than 50% of the length in the anteroposterior direction of the absorbent article, and is 60% or more, 70% or more, 80% or more of the length in the anteroposterior direction of the absorbent article. , Or 90% or more. The specific region may extend over the entire anterior-posterior direction of the absorbent article. On the other hand, the specific region may be provided only in a part of the absorbent article in the front-rear direction, and for example, the specific region may be provided unevenly on the front side or the rear side of the absorbent article. If the specific region is provided in this way, the front side or the rear side of the absorbent article can be determined based on the specific region. In this case, the length of the specific region in the anteroposterior direction is preferably 70% or less, more preferably 65% or less of the anterior-posterior length of the absorbent article. From the viewpoint of facilitating the detection of the central portion in the width direction of the absorbent article regardless of the position of the absorbent article in the anteroposterior direction, the specific region is provided so as to extend over the entire area of the absorbent article in the anteroposterior direction. It is preferable that a specific region is exposed on the outer surface side of the absorbent article over the entire front-rear direction of the absorbent article.

Next, a configuration example of the absorbent article of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments shown in the drawings.

1 to 3 show a configuration example of a urine pad as an absorbent article of the present invention. FIG. 1 shows a plan view of the urine pad as seen from the skin surface side, FIG. 2 shows a plan view of the urine pad shown in FIG. 1 as viewed from the outer surface side, and FIG. 3 shows FIGS. 1 and 2. The III-III cross-sectional view of the shown urine pad is shown. In the figure of the present application, the arrow x represents the width direction, the arrow y represents the front-back direction, and the direction perpendicular to the surface formed by the arrows x, y represents the thickness direction z. In FIGS. 1 and 2, the upper side of the drawing corresponds to the front side of the absorbent article, and the lower side of the drawing corresponds to the rear side of the absorbent article.

The absorbent article 1 (1A) has a top sheet 2, a back sheet 3, and an absorber 4 provided between them. The top sheet 2 is arranged on the skin surface side of the absorber 4, and the back sheet 3 is arranged on the outer surface side of the absorber 4. The excrement that has passed through the top sheet 2 is contained by the absorber 4. The back sheet 3 prevents excrement from leaking to the outside. In the drawing, the absorber 4 is formed in an hourglass shape.

Liquid-impermeable side sheets 5 extending in the front-rear direction y are joined to both sides of the top sheet 2 in the width direction x. The side sheet 5 is joined to the top sheet 2 at the joint portion 6A, and the inner portion in the width direction x from the joint portion 6A is formed so as to be able to stand up from the top sheet 2, and the side sheet 5 is formed to be upright from the top sheet 2 and is outward in the width direction x than the joint portion 6A. The portions are laminated on the backsheet 3 (see FIG. 3). When the inner portion of the side sheet 5 in the width direction x stands up, a rising flap 6 is formed, which can prevent lateral leakage of urine or the like in the width direction x. Since the inner portion of the side sheet 5 in the width direction x is formed so as to be able to stand up from the top sheet 2, the side sheet 5 has a front-rear direction y in the inner portion of the width direction x than the joint portion 6A. It is preferable that the extending elastic member 7 for standing up is provided.

On the outer surface side of the back sheet 3, a specific region 10 composed of a brushed or embossed non-woven fabric 8 is provided. In the absorbent article 1A, a brushed or embossed nonwoven fabric 8 is provided on the outer surface side of the backsheet 3 as a separate member from the backsheet 3. The non-woven fabric 8 forms a specific region 10, and the specific region 10 is provided extending in the front-rear direction y at the center of the absorbent article 1A in the width direction x. The length of the specific region 10 in the width direction x is 5% or more and 50% or less of the length of the narrowest portion in the width direction x of the middle portion in the front-rear direction y of the absorbent article 1A, and is 50% or less. The length in the front-rear direction y is 50% or more of the length in the front-rear direction y of the absorbent article 1A. By providing the specific area 10 on the outer surface side of the back sheet 3 in this way, the user, the caregiver, or the like can touch the outer surface side of the absorbent article 1A by hand, and the absorbent article 1A can be used as a guide with the specific area 10 as a guide. The central portion of the width direction x can be detected. Therefore, when the absorbent article 1A is attached, even if it is difficult for the user or the caregiver to see the absorbent article 1A or the eyesight of the user or the caregiver is weakened, the specific area 10 is used as a guide. Therefore, it becomes easy to appropriately adjust the position of the absorbent article 1A in the width direction x.

In the absorbent article 1A, the specific region 10 can be provided on the back sheet 3 instead of being provided on the non-woven fabric 8 which is a member different from the back sheet 3. In this case, the back sheet 3 is composed of a non-woven fabric at least on the outer surface side, and the specific region 10 can be formed by raising or embossing a part of the non-woven fabric constituting the back sheet 3.

4 and 5 show other configuration examples of the urine pad as an absorbent article of the present invention. FIG. 4 shows a plan view of the urine pad as viewed from the outer surface side, FIG. 5 shows a VV cross-sectional view of the urine pad shown in FIG. 4, and the absorbent article 1A shown in FIGS. It is a modified example.

In the absorbent article 1A shown in FIGS. 1 to 3, the specific region 10 was composed of the non-woven fabric 8 which was brushed or embossed, but in the absorbent article 1B shown in FIGS. 4 and 5, the back sheet was formed. 3 is formed by laminating a non-woven fabric layer 3B on the outer surface side of the film layer 3A, and a specific region 10 is formed by an adhesive 9 applied in a planar shape between the film layer 3A and the non-woven fabric layer 3B. In the absorbent article 1B, the back sheet 3 is formed to have high rigidity in the specific area 10, so that the user, a caregiver, or the like can touch the outer surface side of the absorbent article 1B with his / her hand to use the specific area 10 as a guide. The central portion of the absorbent article 1B in the width direction x can be detected.

6 to 8 show a configuration example of a tape-type disposable diaper as an absorbent article of the present invention. FIG. 6 shows a plan view of the tape-type disposable diaper as viewed from the skin surface side, FIG. 7 shows a plan view of the disposable diaper shown in FIG. 6 as viewed from the outer surface side, and FIG. 8 shows FIG. The VIII-VIII cross-sectional view of the disposable diaper shown in FIG. 7 is shown. In FIGS. 6 and 7, the upper side of the drawing corresponds to the front side of the absorbent article, and the lower side of the drawing corresponds to the rear side of the absorbent article. In the following, the description of the portion overlapping with the absorbent articles 1A and 1B shown in FIGS. 1 to 5 will be omitted.

In the absorbent article 1 (1C) shown in FIGS. 6 to 8, fastening tapes 14 are provided on both sides of the width direction x of the rear side portion in the front-rear direction y, and the outer surface of the back sheet 3 on the front side portion in the front-rear direction y is provided. A target tape 13 is provided on the side. The fastening tape 14 is configured by providing a hook member 15 for a hook-and-loop fastener on a tape base material 16. The absorbent article 1C can be attached by putting it in the crotch of the wearer and fastening the hook member 15 of the fastening tape 14 to the target tape 13 on the front side of the absorbent article 1C.

In the fastening tape 14, the hook member 15 is provided on the skin surface side of the tape base material 16. In the tape base material 16, the inner portion in the width direction x is fixed to the side sheet 5 and / or the back sheet 3, and the hook member 15 is attached to the outer portion in the width direction x. The hook member 15 is formed with a large number of engaging elements protruding from the base. The shape of the engaging element is not particularly limited, and examples thereof include a hook shape, an anchor shape, a mushroom shape, and a pillar shape.

As the tape base material 16, a non-woven fabric, a woven fabric, a knitted fabric, a resin film, a laminate thereof, or the like can be used. From the viewpoint of enhancing the adhesiveness between the tape base material 16 and the side sheet 5 and / or the back sheet 3, the tape base material 16 is preferably composed of a woven fabric, a knitted fabric, or a non-woven fabric, and is made of a non-woven fabric. It is more preferable that it is configured.

The target tape 13 is preferably composed of a loop member of a hook-and-loop fastener. The loop member of the hook-and-loop fastener is configured by providing a loop portion capable of engaging with the engaging element of the hook member 15 on the substrate. A part of the loop portion is fixed to the base and the other portion is not fixed to the base, whereby the engaging element of the hook member can be engaged with the non-fixed portion of the loop portion to the base. Each loop portion may form a closed ring, or a part of the ring may be formed open and provided in connection with an adjacent loop portion. Further, a knitted structure made of threads may be formed on the substrate, and a loop portion may be formed by this knitted structure.

It is preferable that leg elastic members 11 extending in the front-rear direction y are provided on both sides of the absorbent article 1C in the width direction x. The leg elastic member 11 can form gathers around the wearer's legs to improve the fit around the legs and prevent lateral leakage.

It is preferable that the waist elastic member 12 extending in the width direction x is provided at the end of the absorbent article 1C in the front-rear direction y. The waist elastic member 12 forms waist gathers along the waist of the wearer to prevent leakage of urine or the like from the abdomen or back.

On the outer surface side of the back sheet 3, a specific region 10 composed of a raised or embossed non-woven fabric is provided. In the absorbent article 1C, the outer surface side of the back sheet 3 is made of a non-woven fabric, and the non-woven fabric is provided with a specific region 10. The specific region 10 is provided extending in the front-rear direction y at the center of the absorbent article 1C in the width direction x, and the length of the specific region 10 in the width direction x is intermediate between the front-rear direction y of the absorbent article 1C. The length of the narrowest portion of the portion in the width direction x is 5% or more and 50% or less, and the length of the specific region 10 in the front-rear direction y is 50% of the length of the absorbent article 1C in the front-rear direction y. That is all. Also in the absorbent article 1C, the specific area 10 provided on the outer surface side of the back sheet 3 allows the user, a caregiver, or the like to touch the outer surface side of the absorbent article 1C by hand, so that the specific area 10 is used as a guide. The central position of the absorbent article 1C in the width direction x can be detected.

In the absorbent article 1C, which is a tape-type disposable diaper, the specific area 10 is provided with a specific area 10 composed of a brushed or embossed non-woven fabric on the outer surface side of the back sheet 3 as described above. It can also function as a fastening target portion of the hook member 15 of 14. Since the specific region 10 composed of the raised or embossed non-woven fabric can have a certain degree of engaging force with the hook member 15, for example, when the absorbent article 1C is discarded after the absorbent article 1C is used. In addition, the absorbent article 1C is folded or rolled in the front-rear direction y, and the hook member 15 of the fastening tape 14 is fixed to the specific area 10, so that the absorbent article 1C is folded or rolled in the front-rear direction y. Can be maintained. In the absorbent article 1C, the specific region 10 is not formed on the back sheet 3, but can be provided on a non-woven fabric which is a member different from the back sheet 3. Further, although the effect of increasing the engaging force with the hook member 15 cannot be expected so much, the back sheet 3 is composed of a film layer and a non-woven fabric layer, and a specific region is formed by an adhesive applied in a planar shape between the film layer and the non-woven fabric layer. Of course, it is also possible to form 10. In this case, the specific region 10 can be used as a guide for the central portion of the absorbent article 1C in the width direction x.

In the absorbent article 1C, it is preferable that the specific region 10 is provided at least in the middle portion of the absorbent article 1C in the anteroposterior direction y, and the specific region 10 is provided from the intermediate portion to the front side portion and / or the rear side with respect to the anteroposterior direction y. It may be provided extending to the portion. In FIG. 7, the specific area 10 is formed in the entire front-rear direction y of the backsheet 3, but in the portion where the target tape 13 is provided, a part of the specific area 10 is hidden by the target tape 13. It has become.

FIG. 9 shows another configuration example of a tape-type disposable diaper as an absorbent article of the present invention. FIG. 9 shows a plan view of the tape-type disposable diaper as viewed from the outer surface side, and is a modified example of the absorbent article 1C shown in FIGS. 6 to 8.

In the absorbent article 1C shown in FIGS. 6 to 8, a part of the specific region 10 was hidden by the target tape 13, but in the absorbent article 1 (1D) of FIG. 9, the target tape 13 was x in the width direction. A specific region 10 is provided between one side and the other side, and a specific region 10 exists between the target tape 13 provided on one side and the other side in the width direction x. In FIG. 9, the specific region 10 is provided so as to extend over the entire anteroposterior direction y of the absorbent article 1D, and is composed of a brushed or embossed non-woven fabric over the entire anteroposterior direction y of the absorbent article 1D. The specific region 10 is formed so as to be exposed on the outer surface side of the absorbent article 1D. By providing the target tape 13 and the specific area 10 in this way, when the absorbent article 1D, which is a tape-type disposable diaper, is attached, the specific area 10 is fixed together with the target tape 13 to the hook member 15 of the fastening tape 14. Can be a department.

1,1A, 1B, 1C, 1D: Absorbent article 2: Top sheet 3: Back sheet 4: Absorber 5: Side sheet 6: Standing flap 7: Standing elastic member 8: Non-woven fabric 9: Adhesive 10: Specific area 13: Target tape 14: Fastening tape

Claims (8)

An absorbent article having a front-rear direction and a width direction, and having a top sheet, a back sheet, and an absorber arranged between them.
A specific area composed of a brushed non-woven fabric is provided on the outer surface side of the back sheet.
The specific region is provided extending in the front-rear direction in the central portion in the width direction of the absorbent article, and the length in the width direction of the specific region is the narrowest in the middle portion in the front-rear direction of the absorbent article. The absorbency is 5% or more and 50% or less of the length in the width direction of the portion, and the length in the front-rear direction of the specific region is 50% or more in the front-back direction of the absorbent article. Goods. An absorbent article having a front-rear direction and a width direction, and having a top sheet, a back sheet, and an absorber arranged between them.
A specific area composed of an embossed non-woven fabric is provided on the outer surface side of the back sheet.
The specific region is provided extending in the front-rear direction in the central portion in the width direction of the absorbent article, and the length in the width direction of the specific region is the narrowest in the middle portion in the front-rear direction of the absorbent article. The absorbency is 5% or more and 50% or less of the length in the width direction of the portion, and the length in the front-rear direction of the specific region is 50% or more in the front-back direction of the absorbent article. Goods. An absorbent article having a front-rear direction and a width direction, and having a top sheet, a back sheet, and an absorber arranged between them.
The back sheet is formed by laminating a non-woven fabric layer on the outer surface side of the film layer, and a specific region to which an adhesive is applied in a planar manner is provided between the film layer and the non-woven fabric layer.
The specific region is provided extending in the front-rear direction in the central portion in the width direction of the absorbent article, and the length in the width direction of the specific region is the narrowest in the middle portion in the front-rear direction of the absorbent article. The absorbency is 5% or more and 50% or less of the length in the width direction of the portion, and the length in the front-rear direction of the specific region is 50% or more in the front-back direction of the absorbent article. Goods. The absorbent article according to claim 1 or 2, wherein the outer surface side of the back sheet is made of a non-woven fabric, and the specific region is formed on the non-woven fabric. The absorbent article according to claim 1, wherein the back sheet is formed by laminating a non-woven fabric layer on the outer surface side of the film layer, and the specific region is formed in the non-woven fabric layer. The absorbent article according to any one of claims 1 to 5, wherein the specific area extends over the entire area in the anteroposterior direction of the absorbent article. The absorbent article is a tape-type disposable diaper, and fastening tapes are provided on both sides in the width direction of the rear side portion in the front-rear direction, and the front side portion in the front-rear direction is provided on the outer surface side of the back sheet when attached. The absorbent article according to any one of claims 1 to 6, wherein a target tape for fastening the fastening tape is provided. The specific area is provided on the outer surface side of the back sheet and is composed of a brushed or embossed non-woven fabric.
The target tape is provided on one side and the other side in the width direction.
The absorbent article according to claim 7, wherein the specific region exists between the target tapes provided on one side and the other side in the width direction.

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