JP2015058034A - Disposable absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable absorbent article which can suppress stuffiness in a worn state and is excellent in strength.SOLUTION: A disposable absorbent article includes an exterior sheet 5 and an absorbent body 6 which is provided on the exterior sheet 5. The exterior sheet 5 has an exterior outer surface sheet 15 which works as a hydrophilic sheet positioned on an outer surface side that is a non-skin surface side opposite to the absorbent body 6. In addition, the exterior sheet 5 has an exterior inner surface sheet 16 which works as a sweat-absorbent sheet positioned on an inner surface side that is closer to a skin surface side than the exterior outer surface sheet 15. A waistline opening part and a pair of leg opening parts are formed to be in a use state by joining both side parts of an abdominal side part 2 and a back side part 4 mutually while the abdominal side part 2 and the back side part 4 face each other so that the absorbent body 6 is located inside.

Description

  The present invention relates to a disposable absorbent article for children, adults or incontinence.

  Conventionally, in order to reduce stuffiness and prevent skin diseases such as eczema and eczema, a sweat-absorbent sheet that absorbs sweat on the skin surface is a disposable absorbent article that has been used as an exterior sheet covering the circumference of the torso. It is known (for example, refer to Patent Document 1).

  Similarly, in order to reduce stuffiness and prevent skin diseases such as sweat and eczema, a liquid-permeable sheet located on the surface side that is the skin surface and a surface side opposite to the skin surface A disposable absorbent article is known in which a sweat-absorbing sheet that absorbs sweat is interposed between the liquid-impermeable sheet positioned (see, for example, Patent Document 2).

Japanese Patent No. 3820043 Japanese Patent No. 3950258

  However, in the configurations of Patent Document 1 and Patent Document 2 described above, the sweat-absorbing sheet is disposed so as to overlap with a water-repellent portion such as a liquid-impervious sheet. Moisture such as sweat absorbed by the sheet is hardly released to the outside, and remains inside the disposable absorbent article. For this reason, when worn for a long time, the sweat-absorbing material cannot be fully utilized, which causes stuffiness.

  In addition, sheet bodies formed of hygroscopic fibers such as sweat-absorbent sheets generally have low tensile strength, and in pants-type disposable absorbent articles, they may be damaged by the pulling-up force when worn. It was.

  This invention is made | formed in view of such a point, and it aims at providing the disposable absorbent article which can suppress the stuffiness in the state which it wore and has favorable intensity | strength.

  The disposable absorbent article according to claim 1 includes an exterior sheet and an absorbent main body disposed on the exterior sheet, and the abdomen, the crotch part, and the back part are disposed along the longitudinal direction, By joining the abdomen and the dorsal side in a state where the abdomen and the dorsal side are opposed so that the absorption body is on the inside, a waist opening and a pair A disposable absorbent article in which openings around the legs are formed, wherein the absorbent main body is a liquid-permeable surface sheet located on the front surface side, a liquid-impermeable back sheet located on the back surface side, An absorbent body positioned between the top sheet and the back sheet, and the exterior sheet is located on the outer surface side, which is the non-skin surface side opposite to the absorbent main body, and has hydrophilicity. And hygroscopic located on the inner surface side that is the skin surface side from this hydrophilized sheet Those having a sweat-absorbent sheet having.

  The disposable absorbent article according to claim 2 is the disposable absorbent article according to claim 1, wherein the exterior sheet has an inner surface hydrophilized sheet positioned between the sweat-absorbent sheet and the skin surface and having hydrophilicity. Is.

  According to the first aspect of the present invention, sweat can be absorbed by the sweat-absorbent sheet, and the absorbed sweat is easily released to the outside through the hydrophilized sheet. Moreover, since the strength can be improved by the hydrophilic sheet, the strength is good.

  According to the invention described in claim 2, since the inner surface hydrophilized sheet is provided between the sweat absorbent sheet and the skin surface and has hydrophilicity, the sweat absorbent sheet that has absorbed the sweat does not directly contact the skin. , Can prevent deterioration of wearing feeling.

It is a top view which shows the expansion | deployment state of the disposable absorbent article which concerns on the 1st Embodiment of this invention. It is a top view which shows the use condition of a disposable absorbent article same as the above. It is AA sectional drawing in FIG. It is sectional drawing which shows the modification of a disposable absorbent article same as the above. It is a top view which shows the expansion | deployment state of the disposable absorbent article which concerns on the 2nd Embodiment of this invention. It is BB sectional drawing in FIG.

  Hereinafter, the configuration of the first exemplary embodiment of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, 1 shows a disposable absorbent article. This disposable absorbent article 1 is, for example, a disposable diaper for children, adults or incontinence.

  The disposable absorbent article 1 has a longitudinal direction and a width direction in the unfolded state shown in FIG. In addition, the disposable absorbent article 1 includes an abdominal side part 2 that is disposed on the abdomen side of the wearer in a worn state, a crotch part 3 that is disposed on the crotch of the wearer in a worn state, In this state, the back side portion 4 arranged on the back side of the wearer is sequentially arranged along the longitudinal direction.

  The disposable absorbent article 1 includes an exterior sheet 5 and an absorbent main body 6 disposed on the inner surface side of the exterior sheet 5.

  The exterior sheet 5 has a so-called hourglass shape in which a substantially central portion in a longitudinal direction of a rectangle is cut out in an arc shape inward in the width direction.

  In addition, the outer sheet 5 has a crotch portion that is cut out in a circular arc shape, one end side in the longitudinal direction forms a ventral side portion 2 from the cut out portion in a circular arc shape, and the other end side is a dorsal side. Part 4 is configured. The absorbent body 6 is joined to the exterior sheet 5 so as to be positioned in the crotch 3.

  And the disposable absorbent article 1 is bent in the substantially central part of the longitudinal direction so that the absorbent main body 6 is inside, and the abdominal side part 2 and the back side part 4 are opposed to each other. And by joining the both side parts which are the both ends of the width direction of the back side part 4 with an adhesive etc., as shown in FIG. 2, one trunk periphery opening part 7 and a pair of leg periphery opening part 8 and It becomes the pants type shape which has.

  Thus, the disposable absorbent article 1 is changed from the unfolded state shown in FIG. 1 to the pants-type shape shown in FIG. In use, the disposable absorbent article 1 is placed on the wearer's abdomen, crotch, and back by passing the legs through the leg opening 8 and positioning the waist opening 7 around the wearer's waist. It is worn along the body.

  The absorbent main body 6 has a top sheet 11 located on the front side which is the wearer side, and a back sheet 12 located on the back side which is the clothes side of the wearer. Further, an absorber 13 is disposed between the top sheet 11 and the back sheet 12.

  Specifically, the absorbent body 6 is formed by bonding the peripheral portions of the top sheet 11 and the back sheet 12 with, for example, an adhesive in a state where the absorber 13 is sandwiched between the top sheet 11 and the back sheet 12. It is sealed by doing.

  The top sheet 11 is a liquid-permeable substantially rectangular sheet that can pass excretory fluid such as urine, for example, and is appropriately formed of a woven fabric or a non-woven fabric.

  The back sheet 12 is a liquid-impervious substantially rectangular sheet that does not allow excretion to permeate, and is appropriately formed of a polyethylene film, other synthetic resin, or the like. Moreover, since the back surface sheet | seat 12 can prevent the stuffiness in the disposable absorbent article 1 by making it the structure which has moisture permeability, it is preferable.

  The absorber 13 has a so-called hourglass shape in which a substantially central portion in the longitudinal direction is cut out in an arc shape inward in the width direction. Further, the absorbent body 13 is appropriately formed of, for example, absorbent fibers such as pulp and a superabsorbent polymer so that liquid such as excreta can be absorbed and retained. The absorbent body 13 may be formed of a sheet-like superabsorbent polymer or the like as long as it can absorb and hold liquid, and the absorbent body 13 is a liquid-permeable covering sheet such as a tissue. Alternatively, the outer surface may be enclosed.

  Then, the excrement fluid of the wearer passes through the top sheet 11 and is absorbed and held by the absorber 13, and the excretion fluid absorbed by the absorber 13 is prevented from leaking to the back side that is the wearer's clothing side. Held at 12.

  Further, the absorbent body 6 is provided with a three-dimensional gather 14. The three-dimensional gather 14 is formed by bonding a hydrophobic sheet to the surface side of the top sheet 11 along the longitudinal direction. Further, the hydrophobic sheet forming the three-dimensional gather 14 is disposed along the longitudinal direction in a state where the elastic body 18 that can be expanded and contracted is stretched.

  The three-dimensional gather 14 rises to the surface side when the elastic body 18 contracts and comes into close contact with the wearer's crotch to prevent leakage of excretory fluid in the width direction on the surface of the absorbent main body 6.

  As shown in FIG. 3, the back sheet 12 of the absorbent main body 6 is bonded to the exterior sheet 5, and the absorbent main body 6 and the exterior sheet 5 are laminated adjacent to each other in the cross-sectional direction.

  The exterior sheet 5 has an exterior exterior sheet 15 positioned on the side opposite to the absorbent body 6, that is, on the exterior side (outermost layer) that is the non-skin surface side of the wearer. The exterior sheet 5 has an exterior inner surface sheet 16 located on the absorption main body 6 side, that is, on the skin surface side of the wearer and on the inner surface side opposite to the exterior exterior surface sheet 15. The exterior outer sheet 15 and the exterior inner sheet 16 have substantially the same shape, and are joined with, for example, an adhesive or the like in a state where the exterior outer sheet 15 and the exterior inner sheet 16 are laminated.

  The exterior outer sheet 15 is formed with a slightly longer length in the longitudinal direction than the exterior inner sheet 16, and the longitudinal end of the exterior outer sheet 15 is the longitudinal direction of the exterior inner sheet 16 at the waist opening 7. In the state of being extended from the end portion, the extended portion is folded and joined to the exterior inner surface sheet 16 side to form a folded portion 17.

  Between the exterior outer surface sheet 15 and the exterior inner surface sheet 16 in the ventral side portion 2 and the back side portion 4, a plurality of elastic bodies 19 that can be expanded and contracted extend along the width direction of the exterior sheet 5. 5 are spaced apart from each other in the longitudinal direction of the belt 5 to form a waist circumference gather. Then, as the elastic body 19 contracts, the waist circumference gathers adhere to the circumference of the wearer's waist, preventing leakage of excretory fluid and the like from the waist circumference opening 7.

  In addition, a plurality of elastic bodies 20 that can be expanded and contracted between the exterior outer sheet 15 and the exterior inner sheet 16 at both ends in the width direction of the crotch 3 are mutually stretched along an arcuate edge. They are spaced apart and constitute a gather around the legs. Then, the elastic body 20 contracts, so that the leg-gathering gathers tightly around the wearer's leg and prevents leakage of excretory fluid or the like from the leg-gear opening 8.

  The exterior outer sheet 15 is a hydrophilic sheet having hydrophilicity. Here, the hydrophilized sheet is a sheet body having hydrophilicity that is formed from hydrophobic fibers that do not contain absorbent fibers and that do not have hygroscopicity, and has been subjected to a hydrophilization process. The hydrophilization process is a method of hydrophilizing the surface of a nonwoven fabric formed of hydrophobic fibers with an oil agent, a method of hydrophobizing a material by coating hydrophobic fibers, or a material hydrophobic. For example, there is a method of kneading a resin into a hydrophilic fiber to make it hydrophilic. For example, a sheet or the like obtained by treating a polypropylene spunbonded nonwoven fabric with a hydrophilizing oil to make it hydrophilic is used. In addition, the sheet | seat which has hydrophilic property is a sheet | seat body which can permeate | transmit water to the other surface, without applying pressure, when water is dripped at one surface.

  The exterior inner sheet 16 is a hygroscopic sheet having hygroscopicity. The exterior inner surface sheet 16 as such a sweat-absorbing sheet includes hygroscopic fibers having an official moisture content (a moisture content of fibers in an environment of 20 ° C. and 65% RH) of 5.0% or more. And the sheet | seat which has hydrophilic property is used. For example, a hydrophilized thermal bond nonwoven fabric containing 80% polypropylene and 20% rayon fibers which are hygroscopic fibers is used. Examples of the hygroscopic fiber include fibers such as rayon (official moisture content 11%), cotton (official moisture content 8.5), and acetate (official moisture content 6.5%). In addition, about the official moisture content of each fiber, the official moisture content shown by JISL1030-2: 2012 was referred.

  Here, the disposable absorbent article 1 to be mounted in a pant-type shape is a waistline formed by the abdominal side part 2 and the back side part 4 in a state where the leg is inserted into the leg periphery opening 8. Grip the part and put it up. Therefore, the exterior sheet 5 needs to have such a strength that it is not damaged by the force applied when it is pulled up.

  Specifically, it is preferable that the tensile strength in the longitudinal direction of the exterior sheet 5, that is, the total tensile strength of the exterior outer sheet 15 and the exterior inner sheet 16 is 30 N or more because it is difficult to be damaged during mounting. In addition, the tensile strength is measured by applying a tensile force in the longitudinal direction, which is the same direction as the direction of pulling on the abdomen side portion 2 or the back side portion 4 of the exterior sheet 5. For example, the exterior sheet 5 is cut into a size of 5 cm in the longitudinal direction and 5 cm in the width direction to obtain a test piece. Using this test piece, the distance between chucks is 3 cm and the tensile speed is 300 mm / min with a tensile tester. Measure under conditions.

Generally, in order to improve the strength of the sheet body, it is necessary to increase the basis weight. However, if the basis weight is too high, so-called wrinkle increases and stuffiness tends to occur, and the feeling of wearing deteriorates. In order to prevent stiffness and stuffiness, the basis weight is preferably set to 70 g / m ² or less. However, when the exterior sheet 5 is formed only from the sweat-absorbent sheet, a strength that is not easily damaged during mounting is obtained. In this case, the basis weight becomes higher than 70 g / m ² , and it becomes easy to cause stiffness and stuffiness.

Therefore, in the disposable absorbent article 1, the exterior sheet 5 is formed by combining the exterior sheet 15 that is a hydrophilic sheet and the exterior sheet 16 that is a sweat-absorbent sheet, and the basis weight of the exterior sheet 5 is particularly 70 g. It is preferable to combine the exterior outer sheet 15 and the exterior inner sheet 16 so as to be equal to or less than / m ² .

  Next, the operation and effect of the first embodiment will be described.

  When the disposable absorbent article 1 having a pants type shape is worn, first, the wearer's legs are inserted from the waist opening 7 into the leg opening 8.

  With the leg inserted into the leg opening 8, the disposable absorbent article 1 is pulled up by gripping and pulling up the exterior sheet 5, and the trunk opening 7 is in close contact with the trunk opening. Is in close contact with the legs and the absorbent body 6 is in close contact with the crotch.

  And in the wearing state of the disposable absorbent article 1, moisture such as sweat perspired on the skin surface is quickly absorbed and held in the exterior inner surface sheet 16 which is a sweat-absorbing sheet by capillary action. Therefore, no sweat remains on the skin surface, and the skin can be made dry.

  Further, the moisture absorbed in the exterior inner sheet 16 moves to the exterior outer sheet 15 which is a hydrophilic sheet adjacent to the exterior inner sheet 16 and is released to the outside of the disposable absorbent article 1. That is, the moisture retained in the exterior inner sheet 16 is promoted to move from the exterior inner sheet 16 to the exterior outer sheet 15 by the hydrophilic action of the exterior outer sheet 15 located on the front side, and in the exterior outer sheet 15 It is transmitted to the surface side which is the non-skin surface side. Therefore, it is easy to release moisture such as sweat to the outside of the disposable absorbent article 1. Moreover, since the exterior sheet 5 is formed by laminating hydrophilic hydrophilic sheets and the water-repellent portions such as liquid-impervious sheets do not overlap in the ventral side portion 2 and the back side portion 4, the disposable absorbent property It is difficult for moisture to remain in the article 1.

  Therefore, according to the disposable absorbent article 1, sweat is absorbed by the exterior inner surface sheet 16, and the absorbed sweat is released to the outside through the exterior outer surface sheet 15. Therefore, it is easy to discharge | release the water | moisture content in the disposable absorbent article 1 to the exterior, and can suppress the stuffiness by perspiration in a wearing condition, for example, even if it wears for a long time, a feeling of wear does not deteriorate easily by stuffiness.

  Further, the disposable absorbent article 1 includes the exterior sheet 15 that is a hydrophilic sheet that does not contain hygroscopic fibers and the exterior sheet 15 that is a sweat-absorbent sheet, so that the exterior sheet 5 is formed. The tensile strength of the exterior sheet 5 can be improved as compared with the case where the exterior sheet 5 is composed only of a sweat-absorbent sheet containing a conductive fiber. Therefore, the strength of the exterior sheet 5 is good, and it is difficult to be damaged by a load when the disposable absorbent article 1 is mounted so as to be pulled up.

  In particular, when the exterior outer sheet 15 and the exterior inner sheet 16 are combined so that the tensile strength of the exterior sheet 5, that is, the total of the tensile strength of the exterior outer sheet 15 and the tensile strength of the exterior inner sheet 16, is 30 N or more. Can be more reliably prevented.

Further, when the exterior outer sheet 15 and the exterior inner sheet 16 are combined so that the basis weight of the exterior sheet 5, that is, the basis weight of the exterior outer sheet 15 and the exterior basis sheet 16 is 70 g / m ² or less, Deterioration of wearing feeling due to or steaming can be prevented.

  When the exterior sheet 5 and the exterior sheet 16 are joined to each other, the exterior sheet 5 can be made smaller by joining intermittently, so that the joint area can be made smaller than continuous joining. Deterioration can be suppressed.

  In addition, in the said 1st Embodiment, although it was set as the structure by which the exterior sheet | seat 5 was arrange | positioned from the back side part 4 to the abdominal side part 2, it is not limited to such a structure, The back side part 4 In addition, it is only necessary that at least one of the ventral side portion 2 is formed by the exterior sheet 5. For example, the exterior sheet 5 is disposed from one of the abdominal side 2 and the back side 4 to the crotch 3, and the other of the abdominal side 2 and the back side 4 is formed of a separate sheet. You may make it. Further, the abdominal side part 2, the crotch part 3 and the back side part 4 may be formed as separate sheets and sequentially joined in the longitudinal direction. Further, the crotch part 3 is not provided with the exterior sheet 5, and a structure in which a sheet forming the abdominal side part 2, an absorbent main body 6, and a sheet forming the back side part 4 are sequentially joined in the longitudinal direction, etc. It may be. In addition, in the configuration in which only one of the ventral side portion 2 and the back side portion 4 is formed by the exterior sheet 5, a mark or the like is attached so as to grip only the portion formed by the exterior sheet 5 at the time of wearing. Is preferred.

  Although the absorption body 6 is configured to be disposed at the crotch part 3, it is not limited to such a configuration, and the absorption body 6 may be disposed at least at the crotch part 3. A configuration in which the absorption main body 6 is arranged from a part of the ventral side part 2 to a part of the back side part 4 may be adopted.

  Moreover, although the absorption main body 6 was set as the structure in which the solid gather 14 was provided, it is not limited to such a structure, You may make it the structure in which the solid gather 14 is not provided. Furthermore, when the configuration is provided with the three-dimensional gather 14, the shape, size, and arrangement position of the three-dimensional gather 14 can be determined as appropriate.

  The exterior sheet 5 has a configuration in which the length in the longitudinal direction of the exterior exterior sheet 15 is slightly longer than the length in the longitudinal direction of the exterior interior sheet 16, and the folded portion 17 is formed. However, the configuration is not limited to this configuration. For example, the exterior outer sheet 15 and the exterior inner sheet 16 have the same shape and the same size and the folded portion 17 is not formed, or the exterior outer sheet 15 and the exterior inner sheet 16 have different shapes and sizes. May be. Also, as shown in FIG. 4, a single sweat-absorbent sheet 21 is disposed on the inner surface side of the exterior outer surface sheet 15 and the front surface side of the absorber 13, and the one sweat-absorbent sheet 21 A configuration in which an exterior inner surface sheet 23 as a sweat-absorbing sheet is formed may be employed.

  Next, a second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action same as the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, as shown in FIGS. 5 and 6, the inner surface hydrophilization having hydrophilicity on the inner surface side that is the skin surface side from the outer surface inner sheet 16 at the ventral side portion 2 and the back side portion 4. A holding sheet 25 as a sheet is provided. That is, in the state where the disposable absorbent article 1 is worn, the presser sheet 25 is located between the exterior inner surface sheet 16 and the skin surface of the wearer at the waist circumference portion constituted by the abdominal side portion 2 and the back side portion 4. Located in.

  More specifically, in the ventral side portion 2 and the back side portion 4, the end portion in the longitudinal direction of the pressing sheet 25 is directly joined to the exterior outer surface sheet 15 outside the end portion in the longitudinal direction of the exterior inner surface sheet 16. The inner surface of the exterior inner surface sheet 16 and the end edge portion of the absorption body 6 in the longitudinal direction are joined. That is, in the ventral side portion 2 and the back side portion 4, the pressing sheet 25 is arranged so as to cover the exterior inner surface sheet 16 and the longitudinal end edge portion of the absorbent main body 6 from the longitudinal end portion of the exterior outer surface sheet 15. It is installed.

  Further, the length in the width direction of the pressing sheet 25 is almost the same as the length in the width direction of the exterior outer surface sheet 15 and the exterior inner surface sheet 16, and at both ends in the width direction of the ventral side portion 2 and the back side portion 4, The exterior outer sheet 15, the exterior inner sheet 16, and the pressing sheet 25 are joined together with an adhesive or the like.

  The presser sheet 25, like the outer exterior sheet 15, is a non-hygroscopic hydrophobic fiber processed into a sheet having hydrophilicity by processing with an oil or the like, The hygroscopic fiber is not included, and the fiber itself is a sheet body having no hygroscopic property.

  Then, in a state where the disposable absorbent article 1 is worn, sweat on the skin surface of the wearer is absorbed by the exterior inner surface sheet 16 which is a sweat-absorbing sheet through the pressing sheet 25.

  The moisture absorbed by the exterior inner sheet 16 is released to the outside by the exterior outer sheet 15 which is a hydrophilic sheet.

  Here, since the exterior inner sheet 16 absorbs moisture such as sweat, the repulsive force decreases and it is easy to cling to the skin. A feeling of wearing gets worse.

  Therefore, the presser sheet 25 formed using a fiber having no hygroscopicity is disposed between the outer surface inner sheet 16 and the skin surface side, so that the outer surface inner sheet 16 that has absorbed the sweat directly on the skin. Without contact, moisture hardly remains on the skin side surfaces of the abdominal side portion 2 and the back side portion 4, and moisture absorbed by the exterior inner surface sheet 16 does not easily return to the skin surface side. Therefore, stickiness can be prevented by keeping the skin surface dry, and a reduction in wearing feeling can be prevented.

  Further, since the pressing sheet 25 is disposed so as to cover the end edge in the longitudinal direction of the absorbent main body 6, the absorbent main body 6 can be hardly detached from the exterior sheet 5.

  In the configuration in which the presser sheet 25 is arranged in this way, the total tensile strength of the exterior outer sheet 15, the exterior inner sheet 16, and the presser sheet 25 may be any strength that is not easily damaged by a load during installation. Specifically, the total tensile strength is preferably 30 N or more.

  Further, the basis weight of the exterior outer surface sheet 15 can be reduced by the amount of the pressing sheet 25 laminated. In addition, the lower the basis weight of the exterior outer sheet 15, the easier the moisture absorbed by the exterior inner sheet 16 is released to the outside.

  Furthermore, in order to quickly transfer the sweat on the skin surface to the exterior inner surface sheet 16, it is preferable that the presser sheet 25 has a lower basis weight, and the presser sheet 25 has a basis weight equal to or lower than that of the outer exterior sheet 15. .

  Further, since the capillary attraction of the fiber acts more strongly as the mesh between the fibers becomes finer, it is preferable that the density of the exterior outer surface sheet 15 positioned on the non-skin surface side is larger because moisture is easily transferred to the outside.

  Here, the tensile strength was actually measured in a state in which the exterior outer sheet 15, the exterior inner sheet 16, and the pressing sheet 25 were laminated.

  The tensile strength was measured using a test piece cut to a length of 5 cm and a width of 5 cm, with a chuck distance of 3 cm and a tensile speed of 300 mm / min.

As the exterior outer sheet 15 and the pressing sheet 25 forming the test piece, a polypropylene spunbonded nonwoven fabric (100% polypropylene, basis weight 19 g / m ² ), which is a hydrophilic sheet, was used. Further, as the exterior inner surface sheet 16, a 20% rayon mixed thermal bond nonwoven fabric (80% polypropylene, 20% rayon and a basis weight of 28 g / m ² ), which is a sweat absorbing sheet, was used.

As a result, the tensile strength was 47.9 N, the total basis weight was 66 g / m ² , and the strength was not easily damaged by the load at the time of mounting, and the basis weight was less likely to cause wobbling.

In addition, as a comparison object, when measuring the tensile strength with a laminate of 20% rayon mixed thermal bond nonwoven fabric (80% polypropylene, 20% rayon, basis weight 28 g / m ² ) as a sweat absorbing sheet, The tensile strength was 20.2 N, the total basis weight was 84 g / m ² , and the strength was easy to break due to the load at the time of mounting, and the basis weight was likely to cause wobbling.

  Therefore, it is possible not only to prevent stickiness on the skin side by laminating the exterior outer sheet 15 that is a hydrophilic sheet, the exterior inner sheet 16 that is a sweat-absorbing sheet, and the pressing sheet 25 that is an inner hydrophilic sheet. , Can prevent damage when wearing without increasing the basis weight.

  In addition, in the said 2nd Embodiment, although it was set as the structure by which the pressing sheet | seat 25 was arrange | positioned in both the stomach side part 2 and the back side part 4, it is not limited to such a structure, The stomach side part 2 In addition, it is sufficient if the pressing sheet 25 is disposed on at least one of the back side portion 4.

  In addition, the pressing sheet 25 is configured to cover the exterior inner surface sheet 16 and the longitudinal end edge of the absorbent body 6 from the longitudinal end of the exterior outer sheet 15. The length of the pressing sheet 25 in the longitudinal direction can be appropriately determined as long as the pressing sheet 25 is disposed between the exterior inner surface sheet 16 and the skin surface.

  Further, if the length in the width direction of the pressing sheet 25 is the same as the length in the width direction of the exterior outer sheet 15 and the exterior inner sheet 16, at both end portions in the width direction of the ventral side portion 2 and the back side portion 4. The outer surface sheet 15, the outer surface sheet 16, and the presser sheet 25 can be bonded together, and it is preferable because the bonding area can be minimized and a decrease in air permeability due to bonding can be suppressed. The length of the pressing sheet 25 in the width direction can be determined as appropriate. In the case where the pressing sheet 25 covers the longitudinal edge of the absorbent main body 6, the length of the pressing sheet 25 in the width direction is larger than the length of the absorbent main body 6 in the width direction. A configuration in which the entire end edge in the direction is covered with the pressing sheet 25 is preferable because the absorbent main body 6 is unlikely to be detached from the exterior sheet 5.

  The presser sheet 25 is configured to be formed as a separate sheet from the exterior outer sheet 15, but is not limited to this configuration, and the exterior outer sheet 15 is extended in the longitudinal direction. The protruding portion may be folded back to the exterior inner surface sheet 16 side through the waist opening 7 so that the pressing sheet 25 is formed by the folded portion.

DESCRIPTION OF SYMBOLS 1 Disposable absorbent article 2 Abdominal side part 3 Crotch part 4 Dorsal side part 5 Exterior sheet 6 Absorption main body 7 Trunk circumference opening part 8 Leg circumference opening part
11 Surface sheet
12 Back sheet
13 Absorber
15 Exterior exterior sheet as a hydrophilic sheet
16 Exterior inner sheet as a hygroscopic sheet
22 Surface sheet
23 Exterior inner sheet as a hygroscopic sheet
25 Presser sheet as an internal hydrophilic sheet

Claims (2)

The abdomen side part is provided with an exterior sheet and an absorption body arranged on the exterior sheet, the abdomen side part, the crotch part and the back side part are arranged along the longitudinal direction, and the abdomen side part is arranged so that the absorption body is inside Disposable absorptive in which a waist opening and a pair of leg openings are formed by joining the abdomen and both sides of the dorsal side with the back side facing each other Goods,
The absorbent main body has a liquid-permeable surface sheet positioned on the front surface side, a liquid-impermeable back sheet positioned on the back surface side, and an absorber positioned between the surface sheet and the back sheet. ,
The exterior sheet is located on the outer surface side, which is the non-skin surface side opposite to the absorbent body, and has a hydrophilic property, and the hygroscopic property located on the inner surface side, which is the skin surface side from the hydrophilic sheet. A disposable absorbent article, comprising: a sweat-absorbent sheet comprising: The disposable absorbent article according to claim 1, wherein the exterior sheet includes an inner surface hydrophilized sheet that is positioned between the sweat-absorbent sheet and the skin surface and has hydrophilicity.

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