JP7096857B2 - Absorbent article - Google Patents

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. For example, a tape-type disposable diaper or a urine pad that is placed on the skin side of the diaper and used in combination may be installed at a position shifted from the wearer's crotch when worn. On the other hand, Patent Documents 1 and 2 disclose an absorbent article having a display portion and a scale line visibly provided from the skin surface side of the absorbent article.

Japanese Unexamined Patent Publication No. 2012-24418 Japanese Unexamined Patent Publication No. 2019-80672

In the absorbent articles disclosed in Patent Documents 1 and 2, the position of the absorbent article can be grasped by visually recognizing the display portion and the scale line, so that the absorbent article is placed at an appropriate position in the crotch of the wearer. Can be attached. However, depending on the posture of the wearer when the absorbent article is attached, the brightness of the surroundings, and the like, it may be difficult to visually recognize the display portion and the scale line from the skin surface side of the absorbent article. Therefore, it is more preferable if the position of the absorbent article can be grasped 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 detecting a position in the width direction without visual inspection when mounted.

The absorbent article of the present invention that could solve the above-mentioned 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. The top sheet is made of a non-woven fabric and has a specific region in which the non-woven fabric is embossed. The narrowest part of the middle part is formed so as to be 1% or more and 20% or less of the length in the width direction, and at least anterior to the anterior end and / or posterior to the posterior end of the absorber. It is characterized by being formed in. The specific region may be formed by applying an adhesive in a planar manner to the nonwoven fabric constituting the top sheet, or may be formed by raising the nonwoven fabric constituting the top sheet.

When the absorbent article is attached, the absorbent article can be spread in a plane by grasping both ends in the front-rear direction and extending the absorbent article in the front-rear direction. Then, by setting the absorbent article in the crotch of the wearer in this state, the absorbent article can be suitably fitted in the crotch of the wearer. At this time, the absorbent article is stretched in the front-rear direction so as to spread toward the skin surface side rather than the outer surface side, so that the top sheet is less likely to be distorted or wrinkled. The gripping hand is easier to touch on the skin surface side than on the outer surface side of the absorbent article. The absorbent article of the present invention is located in the widthwise central portion of the anterior-posterior end of the topsheet (ie, the portion anterior to the anterior and / or posterior to the posterior end of the absorber) as described above. Since a specific region is provided in the area, when both ends of the absorbent article in the front-rear direction are grasped by hand, the central portion in the width direction of the absorbent article can be detected based on the feel of the specific area. Therefore, when the absorbent article is attached, it becomes easy to appropriately adjust the position of the absorbent article in the width direction.

When the specific region is formed by embossing, the nonwoven fabric of the top sheet may be heat embossed in the specific region to form a film. This makes it easier to detect a specific area when both ends of the absorbent article in the front-rear direction are grasped by hand. From the same point of view, the top sheet may be embossed together with the back sheet in a specific area.

The specific region is not formed in the portion overlapping the absorber, or is formed in the anterior side and / or the posterior side of the posterior end of the absorber and in the anteroposterior direction of the portion overlapping the absorber. It is preferably formed in the range of 50% or less of. By providing the specific area on the top sheet in this way, when the absorbent article is worn, the specific area is less likely to touch the wearer's skin, and the wearing feeling of the absorbent article can be improved.

The back sheet may be composed of a non-woven fabric on the outer surface side and may have a second specific region in which the non-woven fabric is embossed. In this case, the second specific region is located in the central portion in the width direction of the absorbent article, and the length in the width direction is 1 of the length in the width direction of the narrowest portion in the middle portion in the anteroposterior direction of the absorbent article. It is preferably formed so as to be% or more and 20% or less. The second specific region may be formed by applying an adhesive to the nonwoven fabric constituting the backsheet in a planar manner, or may be formed by brushing the nonwoven fabric constituting the backsheet. By providing the second specific area on the back sheet in this way, when the user or the like touches the outer surface side of the absorbent article by hand, the absorbent article can be made from the difference in the touch of the surface on the outer surface side of the back sheet. The central part in the width direction can be detected.

When the second specific region is formed by applying an adhesive, the back sheet is configured by laminating a nonwoven fabric layer on the outer surface side of the film layer, and the adhesive is applied in a planar manner between the film layer and the nonwoven fabric layer. It is preferable that the second specific region is formed. As a result, the surface on the outer surface side of the back sheet is likely to be raised and formed in the second specific region, and it is easy for the user or the like to detect the second specific region when the back sheet is touched by a hand.

Since the absorbent article of the present invention is provided with a specific area in the central portion in the width direction of the end portion in the front-rear direction of the top sheet, when the absorbent article is attached, both ends in the front-rear direction can be grasped by hand. , The central portion of the absorbent article in the width direction can be detected based on the feel of a specific area. Therefore, when the absorbent article is attached, 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 represented, and a plan view of the absorbent article as viewed from the skin surface side is shown. FIG. 1 shows a cross-sectional view taken along the line II-II of the absorbent article shown in FIG. Another example of the absorbent article of this invention is represented, and the plan view which saw the absorbent article from the skin surface side is represented. A plan view of the absorbent article shown in FIG. 3 as viewed from the outer surface side is shown. FIG. 3 shows a VV cross-sectional view of the absorbent article shown in FIGS. 3 and 4.

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 suitably applied to disposable diapers and urine pads.

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-back 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 portion and an intermediate portion located between them and provided with an absorber. As a disposable diaper, a tape-type disposable diaper in which fastening tapes are provided on both sides in the width direction of the rear side and is formed into a pants shape when worn by the fastening tape is preferably applied to the absorbent article of the present invention. ..

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 wearing the absorbent article. The top sheet is preferably made of a non-woven fabric and is liquid permeable. Examples of the top sheet include non-woven fabrics formed of 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 of fibers, in which the surface of the hydrophobic fibers is hydrophilized with a surfactant, or the like can be used.

The back sheet is a sheet arranged on the outer surface side of the absorbent body, and is provided so as to be located on the opposite side to the wearer when wearing 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), polyamide (for example, nylon), a plastic film, or the like can be used. Further, a laminate of the nonwoven fabric and the film may be used as the back sheet, and for example, a laminate in which the nonwoven 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, SMS non-woven fabric and the like can be used.

The topsheet and backsheet are preferably provided so as to extend anterior to the anterior end of the absorber and posterior to the posterior end. When the side sheets are provided on both sides in the width direction of the top sheet, it is preferable that the side sheets are also provided so as to extend forward from the front end of the absorber and rearward from the rear end. The top sheet or side sheet is preferably provided so as to extend outward in the width direction from both side ends in the width direction of the absorber, and the back sheet is also provided in the width direction from both side ends in the width direction of the absorber. It is preferable that it is provided so as to extend to the outside of the.

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 covering sheet such as a paper sheet (for example, tissue paper or tissue paper) or a liquid-permeable non-woven fabric sheet. Things 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-fusing 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, it is preferable that the absorber 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-like absorber include those formed so as to have a water-absorbent resin between the nonwoven fabrics and not to have pulp fibers. Since the sheet-shaped absorber thus formed has a water-absorbent resin between the nonwoven 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 not bulky and is formed thin. 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 (planar shape) of the absorber 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, an hourglass shape, and a battledore shape.

It is preferable that the skin surface side of the absorbent article is provided with rising flaps on both sides in the width direction. By providing a rising flap, lateral leakage of urine or the like is prevented. The rising flap can be formed 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 sheet 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 topsheet is provided with a specific region at least in the central portion of the absorbent article in the width direction, at least anterior to the anterior end and / or posterior to the posterior end of the absorber. The specific area is provided so that when the user or the caregiver touches 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 forms. For example, the specific area can be provided by embossing or brushing the non-woven fabric constituting the top sheet. In either case, the specific area is formed by processing the surface of the top sheet on the skin surface side, so that the top sheet has a different tactile sensation on the skin surface side between the specific area and other parts. It becomes. The specific region formed by embossing the nonwoven fabric has a different feel from the other regions due to the formation of irregularities on the surface of the nonwoven fabric or the film formation of the nonwoven fabric. The specific region formed by brushing the nonwoven fabric has a different feel from the other regions due to the fluffing formation of the surface of the nonwoven fabric. The embossing of the nonwoven fabric may be performed at a temperature lower than the melting point of the constituent fibers of the nonwoven fabric, or may be thermal embossing performed at a temperature equal to or higher than the melting point of the constituent fibers of the nonwoven fabric.

The specific region can also be formed by applying an adhesive to the top sheet in a planar manner. In this case, the adhesive applied to the top sheet penetrates into the fiber gaps of the nonwoven fabric, or the adhesive layer is formed on the nonwoven fabric, so that the rigidity of the top sheet in a specific region can be increased, whereby the top can be increased. The tactile sensation of the surface on the skin surface side of the sheet differs between the specific area and the other part. In this case, it is preferable that the top sheet has higher rigidity in a specific region than in other regions. The rigidity of the top sheet can be determined, for example, by measuring the rigidity and softness by the cantilever method.

The specific region is located in the central portion of the absorbent article in the width direction, and the length in the width direction is 1% or more and 20% or less of the length in the width direction of the narrowest portion in the middle portion in the anterior-posterior direction of the absorbent article. And at least anterior to the anterior end and / or posterior to the posterior end of the absorber. If the specific area is provided in this way, when the absorbent article is attached, the central portion in the width direction of the absorbent article can be detected with the specific area as a guide, and the position in the width direction of the absorbent article can be detected. Will be easier to adjust properly.

Explaining this in detail, when the absorbent article is attached, the absorbent article can be spread in a plane by grasping both ends in the front-rear direction and extending the absorbent article in the front-rear direction. Then, by setting the absorbent article in the crotch of the wearer in this state, the absorbent article can be suitably fitted in the crotch of the wearer. Similarly, when using the absorbent article as an auxiliary urine pad and placing it on the skin side of the disposable diaper that will be the outer, spread the absorbent article flat and set it on the skin side of the disposable diaper. The absorbent article can be suitably fitted to the wearer's crotch. At this time, the absorbent article is stretched in the front-rear direction so as to spread toward the skin surface side rather than the outer surface side, so that the top sheet is less likely to be distorted or wrinkled. The gripping hand is easier to touch on the skin surface side than on the outer surface side of the absorbent article. Therefore, by providing a specific area at the anterior-posterior end of the topsheet (ie, the portion anterior to the anterior and / or posterior to the posterior end of the absorber), when the absorbent article is attached. It becomes easier to detect the central portion in the width direction of the absorbent article based on a specific region.

The central portion in the width direction of the absorbent article means a portion including the center line in the width direction (center line extending in the anteroposterior direction) of the absorbent article, and the specific region includes the center line in the width direction of the absorbent article. Formed by. The length in the width direction of the specific region is 1% or more and 20% or less of the length in the width direction of the narrowest portion of the middle portion in the anteroposterior direction of the absorbent article. Therefore, no specific region is provided outside the width direction of the central portion of the absorbent article in the width direction. The length of the specific region in the width direction is preferably 2% or more, preferably 15% or less, and more preferably 10% or less of the length in the width direction of the narrowest portion of the middle portion in the anteroposterior direction of the absorbent article. It is preferably 8% or less, and more preferably 8% or less. The specific region is preferably provided substantially symmetrically with respect to the widthwise centerline of the absorbent article.

The middle part in the anteroposterior direction of the absorbent article may be, for example, a 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. can. Alternatively, when the absorbent article has an hourglass-shaped shape, the range in the front-rear direction including the hourglass-shaped constricted portion may be used as an intermediate portion. In this case, the middle portion of the absorbent article is formed to be narrower than the front side portion and the rear side portion, and the front side portion, the middle 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 side is WF, the width length of the widest part of the rear side is _WR , and the width direction of the narrowest part of the middle part is _WR . When the length of is _WM , the boundary between the front side and the middle part is the point where the length in the width direction is ( _WF + _WM ) / 2, and the boundary between the rear side part and the middle part is the length in the width direction. It can be a place where the value is ( _WR + _WM ) / 2. The widthwise length of a particular region is defined based on the widthwise length of the narrowest portion of the middle of the absorbent article, for example, if the absorbent article has a substantially rectangular shape. The widthwise length of the substantially rectangular shape is the widthwise length of the narrowest portion of the middle portion of the absorbent article.

The specific region is provided at least anterior and / or posterior to the posterior end of the absorber with respect to the anterior-posterior direction, preferably at least anterior and posterior to the anterior and posterior ends of the absorber. Is also provided on the rear side. The specific region may be provided only on the portion anterior to the anterior end of the absorber and / or the portion posterior to the posterior end of the absorber, and may also be provided on a portion overlapping the absorber. Even when a specific region is provided in a portion overlapping with the absorber, it is preferable that the specific region is provided in the central portion in the width direction of the absorbent article with the above-mentioned length in the width direction.

The specific area is preferably provided so as to extend in a band shape in the front-rear direction. The specific region is also preferably provided so as to traverse the anterior and / or posterior portions of the absorber in the anterior-posterior direction. When the specific region is formed by embossing the non-woven fabric, it is preferable that the entire specific region is pressed by the embossing. The specific region may be provided continuously or intermittently in the anterior-posterior direction, but at least anterior to the anterior end and / or posterior to the posterior end of the absorber. It is preferable that the portions are continuously provided.

The specific region may also be formed in a portion that overlaps with the absorber, and in this case, the specific region is preferably continuous from the portion in front of the front end of the absorber to the portion that overlaps with the absorber, and absorbs. It is preferable that the portion is continuous from the portion posterior to the posterior end of the body to the portion overlapping the absorber. It is preferable that the specific area is not formed so much in the portion overlapping with the absorbent body, which makes it difficult for the specific area to touch the wearer's skin when the absorbent article is worn, and the wearing feeling of the absorbent article is good. Can be. Therefore, it is preferable that the specific region is not formed in the portion that overlaps with the absorber, and when it is formed in the portion that overlaps with the absorber, it is formed in a range of 50% or less in the anteroposterior direction of the portion that overlaps with the absorber. It is more preferable that it is formed in the range of 40% or less, and further preferably it is formed in the range of 30% or less.

The specific region is also within 50% of the center of the anterior-posterior direction of the absorber (ie, 25% of the anterior-posterior relative position of the absorber when the anterior end of the absorber is 0% and the posterior end is 100%. It is preferably not formed in the range of ~ 75%), more preferably not formed in the central 60% range, and further preferably not formed in the central 70% range. As a result, it becomes difficult for the specific area to come into contact with the urination portion of the wearer, and the wearing feeling of the absorbent article can be improved. When a specific region is formed by heat embossing or application of an adhesive, the absorption performance of urine or the like may deteriorate in the specific region, but if the specific region is formed in this way, the urine of the absorbent article It is possible to realize quick absorption of such things.

When the specific region is formed by embossing the non-woven fabric, the embossing of the specific region may be convex embossing or concave embossing when viewed from the skin surface side of the absorbent article. That is, the non-woven fabric of the top sheet may be pressed from the outer surface side to form a convex emboss on the skin surface side, or may be pressed from the skin surface side to form a concave emboss on the skin surface side. Preferably, the nonwoven fabric constituting the top sheet is concavely embossed in a specific region when viewed from the skin surface side. As a result, when the absorbent article is worn, even if the specific area hits the wearer's skin, the wearer is less likely to feel a sense of discomfort.

The embossing may be embossed on the top sheet alone, or the top sheet may be embossed together with the back sheet. Preferably, the topsheet is embossed with the backsheet in a particular area, which facilitates detection of the particular area when the anterior-posterior ends of the absorbent article are grasped by hand. It is preferable that the top sheet is not embossed together with the absorber.

The top sheet may be formed into a film by heat-embossing the non-woven fabric in a specific region. This makes it easier to detect a specific area when both ends of the absorbent article in the front-rear direction are grasped by hand. The non-woven fabric of the top sheet may be heat-embossed together with the back sheet to form a film, which makes it easier to detect a specific area when both ends of the absorbent article in the front-rear direction are grasped by hand. Thermal embossing of non-woven fabric involves contacting the non-woven fabric with a heating element to melt a part of the non-woven fabric (so-called heat seal), or bringing the non-woven fabric into contact with an ultrasonic transducer to melt a part of the non-woven fabric (so-called ultrasonic waves). It can be done by welding).

If the specific area is formed by applying an adhesive, the adhesive may be solidly applied in the specific area, beaded, spirally applied, or stapled by the curtain spray method. You may. By applying the adhesive in this way, the adhesive can be applied to substantially the entire specific region and formed as a planar adhesive application region. The adhesive is preferably formed in a specific region with a certain thickness (for example, a thickness of 0.1 mm or more and 2.0 mm or less). 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 is formed by being raised more than the other portions, the position of the specific region can be easily detected from the portion formed by the raised top sheet.

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 the specific region is formed by embossing, spunbonded non-woven fabric, air-through nonwoven fabric, airlaid nonwoven fabric, and spunlaced nonwoven fabric are preferably used as the nonwoven fabric. These non-woven fabrics tend to form deep irregularities on the surface of the non-woven fabric by embossing. When a specific region is formed by applying an adhesive, a point-bonded nonwoven fabric, an air-through nonwoven fabric, an air-laid nonwoven fabric, and a spunlaced nonwoven fabric are preferably used as the nonwoven fabric. In these non-woven fabrics, when the adhesive is applied, the adhesive easily enters the fiber gaps, and the rigidity of the top sheet in a specific region is easily increased. When a specific region is formed by brushing, a spunbonded nonwoven fabric, a pointbonded nonwoven fabric, or an air-through nonwoven fabric is preferably used as the nonwoven fabric. In these non-woven fabrics, the constituent fibers of the nonwoven fabric are bonded by heat welding, so that the constituent fibers are less likely to be detached even when brushed. In addition, the surface of the non-woven fabric can be easily fluffed by the brushing process.

In the absorbent article of the present invention, a specific region may be formed on the top sheet and a specific region may be formed on the back sheet. The specific area of the back sheet is referred to as a "second specific area". In this case, the specific area of the top sheet may be referred to as a "first specific area".

When the second specific region is formed on the back sheet, the outer surface side of the back sheet is composed of a non-woven fabric, and the second specific region is formed by embossing, applying an adhesive, or raising the non-woven fabric. The second specific region of the backsheet is in the central portion in the width direction of the absorbent article, and the length in the width direction is 1 of the length in the width direction of the narrowest portion in the middle portion in the anteroposterior direction of the absorbent article. It is preferably formed so as to be% or more and 20% or less. By forming the second specific region on the back sheet in this way, when the user or the like touches the outer surface side of the absorbent article by hand, the absorbent article also has a difference in the touch of the surface on the outer surface side of the back sheet. Can detect the central part in the width direction of. The second specific area may be provided continuously or intermittently in the front-rear direction. For details of the second specific area of the backsheet (embossing, adhesive application, brushing, length in the width direction, etc.), the above description regarding the specific area of the top sheet is referred to.

When the second specific region of the backsheet is formed by embossing the nonwoven fabric, the backsheet may be composed of only the nonwoven fabric, or may be configured by laminating the nonwoven fabric layer on the outer surface side of the film layer. The embossing of the second region is preferably formed by pressing the entire second specific region.

When the second specific region of the backsheet is formed by applying an adhesive, the backsheet is configured by laminating a nonwoven fabric layer on the outer surface side of the film layer, and the adhesive is planar between the film layer and the nonwoven fabric layer. It is preferable that the second specific region is formed by being applied to. As a result, the surface on the outer surface side of the back sheet is likely to be raised and formed in the second specific region, and it is easy for the user or the like to detect the second specific region when the back sheet is touched by a hand.

When the second specific area is formed by an adhesive, as described above, the adhesive may be solidly applied, beaded, spirally applied, or a curtain spray method in the second specific area. May be applied in the form of short fibers. By applying the adhesive in this way, the adhesive can be applied to substantially the entire second specific region and formed as a planar adhesive application region.

The second 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 portion, the back sheet is raised when the user or the like touches the outer surface side of the absorbent article by hand. The position of the second specific region can be detected from the formed portion.

When the second specific region of the backsheet is formed by raising the nonwoven fabric, it is preferable that the backsheet is configured by laminating the nonwoven fabric layer on the outer surface side of the film layer. 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 second specific region. When the non-woven fabric is brushed, there is a concern that the water resistance will decrease at the brushed part. 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 is brushed. Even if it is processed, the leakage-proof performance of the back sheet can be ensured.

The second specific region is preferably provided at least anterior and / or posterior to the anterior end of the absorber and at least anterior and posterior to the anterior end of the absorber in the anterior-posterior direction. It is more preferable to be provided on the rear side of the end. By forming the second specific region in this way, when the user or the like grasps both ends of the absorbent article in the front-rear direction by hand, the absorbent article is absorbent from both the skin surface side and the outer surface side. It becomes easier to detect the central part in the width direction of the article. For example, as described above, the topsheet is embossed with the backsheet to form a first specific region on the topsheet on the anterior side of the absorber and / or on the posterior side of the posterior end of the absorber. In that case, the second specific region is formed on the backsheet at the same time.

The second specific region of the backsheet may be provided only on the portion anterior to the anterior end of the absorber and / or the portion posterior to the posterior end of the absorber, and may also be provided on a portion overlapping the absorber. In the latter case, the second specific region is preferably continuous from the portion anterior to the anterior end of the absorber to the portion overlapping the absorber, and from the portion posterior to the posterior end of the absorber to the absorber. It is preferable that they are continuous over the overlapping portions. The length of the second specific region in the anteroposterior direction is not particularly limited, and may be longer than 50% of the anterior-posterior length of the absorbent article, for example, 60% or more of the anterior-posterior length of the absorbent article. It may be 70% or more, 80% or more, or 90% or more. The second specific region may extend over the entire anteroposterior direction of the absorbent article. When the second specific region is provided in this way, it becomes easy to detect the central portion in the width direction of the absorbent article regardless of the position in the front-rear direction of the absorbent article.

The first specific region of the topsheet is provided on both the anterior portion of the absorber and the posterior portion of the absorber, and the second specific region of the backsheet is of the absorber. It may be provided only on one of the parts on the front side of the front end or the part on the back side of the rear end. Alternatively, the reverse is also possible. If the first specific area and the second specific area are provided in this way, when the user or the like grasps both ends of the absorbent article in the front-rear direction by hand, the central portion in the width direction of the absorbent article is formed. In addition to being able to detect, the anteroposterior direction of the absorbent article can be detected based on the first or second specific region provided on only one of the front end and the rear end in the anteroposterior direction.

The first specific region of the top sheet and the second specific region of the back sheet may be formed by the same method of embossing, adhesive application, and brushing, or may be formed by different methods. .. For example, in the top sheet and the back sheet, a first specific region and a second specific region are formed on the front side of the absorber and / or on the rear side of the rear end, and the first specific region and the second specific region are formed. If is formed by different methods, when the user or the like grasps both ends of the absorbent article in the front-rear direction by hand, the central portion in the width direction of the absorbent article can be detected and the texture is touched. It is possible to detect the skin surface side and the outer surface side of the absorbent article from the difference between the above.

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 and 2 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 viewed from the skin surface side, and FIG. 2 shows a cross-sectional view of II-II of the urine pad shown in FIG. 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 FIG. 1, 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 penetrated 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 an 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 is outward in the width direction x from the joint portion 6A. The portions are laminated on the backsheet 3 (see FIG. 2). 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.

The top sheet 2 is made of a non-woven fabric, and a specific region 8 is formed on the front side of the absorber 4 and on the rear side of the rear end. The specific region 8 is located at the center of the absorbent article 1A in the width direction x, and the length in the width direction x is the length in the width direction x of the narrowest portion in the middle portion in the front-rear direction y of the absorbent article 1A. It is formed so as to be 1% or more and 20% or less of. The specific region 8 is formed by embossing the non-woven fabric constituting the top sheet 2, applying an adhesive in a planar shape, or applying a brushing process. By providing the specific areas 8 at both ends of the front-rear direction y in this way, the absorbent article 1A allows the user or the like to grasp both ends of the front-rear direction y by hand and extend the absorbent article 1A in the front-rear direction y at the time of mounting. When spreading in a plane, the central portion of the absorbent article 1A in the width direction x can be detected with the specific region 8 as a guide. Therefore, when the absorbent article 1A is attached, it is easy to appropriately adjust the position of the absorbent article 1A in the width direction x with the specific area 8 as a guide even when the eyesight of the user or the like is weakened. become.

3 to 5 show a configuration example of a tape-type disposable diaper as an absorbent article of the present invention. FIG. 3 shows a plan view of the tape-type disposable diaper as viewed from the skin surface side, FIG. 4 shows a plan view of the disposable diaper shown in FIG. 3 as viewed from the outer surface side, and FIG. The VV cross-sectional view of the disposable diaper shown in FIG. 4 is shown. In FIGS. 3 and 4, 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 article 1A shown in FIGS. 1 and 2 will be omitted.

In the absorbent article 1 (1B) shown in FIGS. 3 to 5, fastening tapes 13 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. A target tape 12 is provided on the side. The fastening tape 13 is configured by providing a hook member 14 for a hook-and-loop fastener on a tape base material 15. The absorbent article 1B can be attached by touching the crotch of the wearer and fastening the hook member 14 of the fastening tape 13 to the target tape 12 on the front side of the absorbent article 1B.

In the fastening tape 13, the hook member 14 is provided on the skin surface side of the tape base material 15. In the tape base material 15, 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 14 is attached to the outer portion in the width direction x. The hook member 14 is formed by projecting a large number of engaging elements from the substrate. 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 15, 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 15 and the side sheet 5 and / or the back sheet 3, the tape base material 15 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 12 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 that can be engaged with the engaging element of the hook member 14 on the substrate. A part of the loop portion is fixed to the substrate and the other portion is not fixed to the substrate, whereby the engaging element of the hook member can be engaged with the non-fixed portion of the loop portion to the substrate. 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 10 extending in the front-rear direction y are provided on both sides of the absorbent article 1B in the width direction x. The leg elastic member 10 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 11 extending in the width direction x is provided at the end portion of the absorbent article 1B in the front-rear direction y. The waist elastic member 11 forms waist gathers along the waist of the wearer to prevent leakage of urine or the like from the abdomen or back.

Also in the absorbent article 1B, the top sheet 2 is made of a non-woven fabric, and specific regions 8 are formed at both ends in the front-rear direction y at the central portion in the width direction x. Therefore, when the absorbent article 1B is attached, when the user or the like grasps both ends of the anteroposterior direction y by hand and extends the absorbent article 1B in the anteroposterior direction y to spread it in a plane, the absorbent property 8 is used as a guide. The central portion of the article 1B in the width direction x can be detected.

In the absorbent article 1B, the back sheet 3 also has a second specific region 9 formed by embossing the non-woven fabric constituting the back sheet 3, applying an adhesive in a planar manner, or applying a brushing process. It is formed. The second specific region 9 is located at the center of the absorbent article 1B in the width direction x, and the length of the width direction x is the width direction x of the narrowest portion in the middle portion of the absorbent article 1B in the front-rear direction y. It is formed so as to be 1% or more and 20% or less of the length. By forming the second specific region 9 on the back sheet 3 in this way, when the user or the like touches the outer surface side of the absorbent article 1B by hand, the absorbent article 1B is referred to the second specific region 9 as a guide. It is possible to detect the central portion of x in the width direction of. Therefore, when the absorbent article 1B is attached, it becomes easy to touch the central portion of the absorbent article 1B in the width direction x to the urination portion and the anus of the wearer.

1,1A, 1B: Absorbent article 2: Top sheet 3: Back sheet 4: Absorber 5: Side sheet 6: Standing flap 7: Standing elastic member 8: Specific area 9: Second specific area

Claims (9)

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 top sheet is made of a non-woven fabric and has a specific area in which the non-woven fabric is embossed.
The specific region is located in the central portion of the absorbent article in the width direction, and the length in the width direction is 1% or more and 20% of the length in the width direction of the narrowest portion in the middle portion in the anterior-posterior direction of the absorbent article. It is formed so as to be as follows, and is not formed in a portion overlapping the absorber, but is formed on the front side of the absorber and on the rear side of the rear end, and is based on the touch. , An absorbent article characterized in that it serves as a guide for grasping both ends of the absorbent article in the front-rear direction. 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 topsheet is made of a non-woven fabric and has a specific area to which the adhesive is applied in a planar manner.
The specific region is located in the central portion of the absorbent article in the width direction, and the length in the width direction is 1% or more and 20% of the length in the width direction of the narrowest portion in the middle portion in the anterior-posterior direction of the absorbent article. It is formed so as to be as follows, and is not formed in a portion overlapping the absorber, but is formed on the front side of the absorber and on the rear side of the rear end, and is based on the touch. , An absorbent article characterized in that it serves as a guide for grasping both ends of the absorbent article in the front-rear direction. 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 top sheet is made of a non-woven fabric and has a specific area in which the non-woven fabric is brushed.
The specific region is located in the central portion of the absorbent article in the width direction, and the length in the width direction is 1% or more and 20% of the length in the width direction of the narrowest portion in the middle portion in the anterior-posterior direction of the absorbent article. It is formed so as to be as follows, and is not formed in a portion overlapping the absorber, but is formed on the front side of the absorber and on the rear side of the rear end, and is based on the touch. , An absorbent article characterized in that it serves as a guide for grasping both ends of the absorbent article in the front-rear direction. The absorbent article according to claim 1, wherein the top sheet is formed into a film by heat-embossing the nonwoven fabric in the specific region. The absorbent article according to claim 1 or 4, wherein the top sheet is embossed together with the back sheet in the specific area. The back sheet is composed of a non-woven fabric on the outer surface side, and has a second specific region in which the non-woven fabric is embossed.
The second specific region is located in the central portion in the width direction of the absorbent article, and the length in the width direction is 1% or more of the length in the width direction of the narrowest portion in the middle portion in the anteroposterior direction of the absorbent article. The absorbent article according to any one of claims 1 to 5 , which is formed so as to be 20% or less. The back sheet has a second specific region in which the outer surface side is composed of a non-woven fabric and the adhesive is applied in a planar manner.
The second specific region is located in the central portion in the width direction of the absorbent article, and the length in the width direction is 1% or more of the length in the width direction of the narrowest portion in the middle portion in the anteroposterior direction of the absorbent article. The absorbent article according to any one of claims 1 to 5 , which is formed so as to be 20% or less. The back sheet is composed of a non-woven fabric on the outer surface side, and has a second specific region in which the non-woven fabric is brushed.
The second specific region is located in the central portion in the width direction of the absorbent article, and the length in the width direction is 1% or more of the length in the width direction of the narrowest portion in the middle portion in the anteroposterior direction of the absorbent article. The absorbent article according to any one of claims 1 to 5 , which is formed so as to be 20% or less. The claim that the back sheet is formed by laminating a nonwoven fabric layer on the outer surface side of the film layer, and an adhesive is applied in a planar manner between the film layer and the nonwoven fabric layer to form the second specific region. The absorbent article according to 7 .

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