JP5384915B2 - Wearing article - Google Patents

Description

  The present invention relates to an article to be worn, and more particularly, can absorb and retain body fluids, and is a so-called panty liner for downdrafts such as mucus / tissue from a female genital organ, sanitary napkin or pad, disposable diaper It relates to wearing articles such as.

Conventionally, as a sanitary napkin which is a wearing article, for example, JP 2003-230593 A (Patent Document 1) is known. In Patent Document 1, a sanitary napkin includes a top sheet, a back sheet, and an absorbent core formed between these sheets. An absorption promoting sheet is formed between the top sheet and the absorption core, and the top sheet and the absorption promoting sheet are intermittently integrated by heat welding. Furthermore, a groove is formed from the top sheet toward the absorbent core, and the groove prevents deformation of the absorbent body contained in the absorbent core and suppresses body fluid from flowing out of the groove.
JP 2003-230593 A (JP 2003-230593 A)

  In the wearing article as described above, the groove is located in the heat-welded part, and in the top sheet part formed by overlapping these, the top sheet is easily broken, and the absorbent that forms the absorbent body from the broken part. There is a possibility that the liquid core will spill. If spilled core material adheres to the skin, it can irritate the skin and cause skin problems.

  This invention makes it a subject to provide the wearing article which prevents the skin trouble caused by the core material, without spilling the liquid-absorbing core material which forms the absorber of a wearing article.

The present invention includes the first invention and the second invention. 1st invention and 2nd invention are located between the vertical direction and a horizontal direction, the surface sheet located in a wearer's body side, the back sheet located in the other side of the said body side, and the said front and back sheet | seat. An absorbent body including a liquid-absorbent core material; an intermediate sheet positioned between the topsheet and the absorbent body; a joint that integrates the topsheet and the intermediate sheet by pressing; and the topsheet It is related with improvement of the wearing article containing the groove formed toward the said absorber.

1st invention is the said wearing article, The said junction part forms the recessed part which goes to the said intermediate sheet from the said surface sheet, The said groove | channel is the thickness toward the said absorber from the said surface sheet rather than the said recessed part. Deeply formed in the vertical direction, the joint portion and the groove include an overlapping portion formed by overlapping at least a part thereof, and the absorbent body includes a first absorbent body located on the body side, A second absorbent body laminated on the first absorbent body and located on the opposite side, the first absorbent body having a front edge and a rear edge extending in the lateral direction, and comprising superabsorbent polymer particles. A first core sheet and a first covering sheet covering the first core material, wherein a substantially non-existing region in which the first core material does not substantially exist is formed at a portion corresponding to the overlapping portion; The second absorber is at least before the first absorber It includes front and rear end extending portions extending from the front and rear end edges to the outside in the longitudinal direction, the area of the second absorbent body is made larger than the area of the first absorbent body, and the groove is the first absorbent. reaching from the front edge of the body to the rear edge, and wherein the Rukoto extending in the longitudinal direction so as to reach the second absorber.
According to a second aspect of the present invention, the joining portion forms a recess from the top sheet toward the intermediate sheet, and the groove is formed deeper in the thickness direction from the top sheet toward the absorber than the recess. And the joining portion and the groove include an overlapping portion formed by overlapping at least a part thereof, and the absorber includes a first absorber located on the body side, and the first absorber. A first absorbent core comprising a superabsorbent polymer particle, the first absorbent body having a front end edge and a rear end edge extending in the lateral direction. The first covering sheet covering the first core material is included, and in the portion corresponding to the overlapping portion, a substantially non-existing region where the first core material does not substantially exist is formed, and the second absorber is The longitudinal direction from at least the front and rear edges of the first absorbent body A front and rear end extending portion extending outward, the area of the second absorbent body is larger than the area of the first absorbent body, and the groove is formed from the front edge of the first absorbent body. The first core of the first absorbent body extends in the longitudinal direction so as to reach the rear edge and reach the second absorbent body, and the first core member of the first absorbent body is located at the center in the lateral direction, And the substantially non-existing regions are respectively located between the portion located in the center and the portions located on both sides in the lateral direction. It is characterized by that.

  As another preferred embodiment, the joint portion is formed in a dot-like manner over the entire surface sheet.

As another preferred embodiment, the first core member of the first absorbent body includes a portion located in the center in the lateral direction and portions located on both sides in the lateral direction, The existence region is located between the portion where the first core member is located at the center and the portions located on both sides in the lateral direction.

As another preferred embodiment, the strip is formed in two strips so as to be separated from each other in the lateral direction, and the substantially non-existing region is formed along the strip.

  As another preferred embodiment, the joint and the groove are formed by a heat pressing process.

  As another preferred embodiment, the absorber includes a first absorber located on the body side, and a second absorber laminated on the first absorber and located on the opposite side. The substantially absent region is formed in one absorbent body, and the groove reaches the second absorbent body.

  In the wearing article of the present invention, in the portion corresponding to the overlapping portion where the joint portion and the groove match, a substantially nonexistent region in which the absorbent core material of the absorber is not substantially present is formed. Even if the surface sheet is torn, the liquid-absorbent core material will not spill and come into contact with the skin. Therefore, skin troubles caused by the absorber can be prevented.

  An example of the wearing article in this invention will be described.

  In this embodiment, a urine panty liner 1 will be described as an example of a worn article. FIG. 1 is a plan view of a panty liner 1 with a part thereof broken away, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG. The panty liner 1 includes a vertical direction Y and a horizontal direction X perpendicular to the vertical direction Y, and is formed vertically long in the vertical direction Y. The panty liner 1 includes a top sheet 11 positioned on the body side, a back sheet 12 positioned on the clothing side such as the panty opposite to the body side, and a first sheet formed between the sheets 11 and 12. The absorber 20 and the 2nd absorber 30 and the cushion sheet 40 formed between the surface sheet 11 and the 1st absorber 20 are included. The cushion sheet 40 is an intermediate sheet as referred to in the present invention. The top sheet 11 and the back sheet 12 are preferably joined in a watertight manner around the periphery via an adhesive means 13.

The 1st absorber 20 and the 2nd absorber 30 are laminated | stacked on the thickness direction, the 1st absorber 20 is located in the surface sheet 11 side, and the 2nd absorber 30 is located in the back sheet 12 side. . The first absorbent body 20 includes a first core member 21 containing particles of a highly absorbent polymer, and a first covering sheet 22 that covers the first core member 21. The first core member 21 includes a portion located in the center in the horizontal direction X and portions located on both sides in the horizontal direction X. The second absorbent body 30 includes a second core material 31 containing superabsorbent polymer particles and pulp, and a second covering sheet 32 that covers the second core material 31. The first covering sheet 22 and the second covering sheet 32 are intermittently joined by the joining means 51, and the second covering sheet 32 is preferably joined intermittently to the back sheet 12 via the adhesive means 52. Yes.

  The first absorbent body 20 is formed in a substantially rectangular shape as a whole, and includes first side edges 23 and 23 extending in the longitudinal direction Y and first front and rear end edges 24 and 25 extending in the lateral direction X. The second absorbent body 30 has a substantially similar shape to the front and back sheets 11 and 12, and is formed along the inside of the joint portion 13 of the front and back sheets 11 and 12. It is arranged throughout. The 1st absorber 20 is located in the approximate center of the 2nd absorber 30, and the 1st absorber 20 is made to correspond with a wearer's excretion position. The second absorbent body 30 includes front and rear end extending portions 33 and 34 that extend from at least the first front and rear end edges 24 and 25 of the first absorbent body 20 to the outside in the longitudinal direction Y, and the area of the second absorbent body 30. Is made wider than the area of the first absorber 20. However, the area of the 1st and 2nd absorbers 20 and 30 is not restricted to these, For example, the same area may be sufficient.

  The cushion sheet 40 is formed along the inside of the joint portion 13 of the front and back sheets 11 and 12. The cushion sheet 40 improves the cushioning property against the wearer's skin in the panty liner 1 and, in addition to these properties, allows the spot absorption without diffusing bodily fluids. A fiber nonwoven fabric or the like can be used.

  Between the surface sheet 11 and the cushion sheet 40, a joint portion 60 that integrates them is formed. These joining parts 60 are formed by heat-pressing the top sheet 11 and the cushion sheet 40. That is, the top sheet 11 and the cushion sheet 40 have thermoplasticity, and are integrally melted and melted. The joint portion 60 is formed in a dot shape and extends in the longitudinal direction Y in the vicinity of the center in the lateral direction X of the sheets 11 and 40. Such a joint 60 forms a recess from the top sheet 11 toward the cushion sheet 40.

From the top sheet 11 to the first absorbent body 20 and the second absorbent body 30 through the cushion sheet 40, a groove 70 having a substantially V-shaped cross section is formed in the thickness direction. The cross section of the groove 70 may be substantially U-shaped. The groove 70 is formed in two spaced apart in the lateral direction X and extends in the longitudinal direction Y so as to reach at least the first rear edge 25 from the first front edge 24 of the first absorbent body 20. . The groove 70 is formed by a heat squeezing process, but is processed to such an extent that each sheet or the like is not melted. The groove 70 is formed deeper in the thickness direction than the recess formed by the joint 60.
In the case of forming the relatively deep groove 70 in the thickness direction, the surface sheet 11 tends to be lifted from the absorber side on the side of the groove 70, and a joining portion 60 is formed to prevent this, and the surface sheet 11 Is not lifted and separated from the cushion sheet 40.

As described above, the joint portion 60 and the groove 70 are formed on the topsheet 11 and the cushion sheet 40, and the overlapping portion 80 where a part of the joint 60 and the groove 70 overlap is formed. At least at a position corresponding to the overlapping portion 80, the first absorbent body 20 forms a substantially non-existing region 26 where the first core material 21 is not substantially present. Here, the substantially non-existing region 26 means a case where there is no liquid-absorbing core material, or a case where there is a slight amount that does not have a sufficient liquid-absorbing capacity as an absorber. The substantially non-existing region 26 is located between the portion where the first core member 21 is located in the center in the lateral direction X and the portion located on both sides in the lateral direction X, respectively.
Specifically, the substantially non-existing region 26 is formed along the groove 70, and is formed in the vertical direction Y and spaced apart in the horizontal direction X like the groove 70. Thus, by forming the substantially non-existing region 26 along the groove 70, it is ensured that the first core material 21 does not substantially exist in the overlapping portion 80 between the joint 60 and the groove 70. Can be.

  As shown in FIG. 2, in the substantially non-existing region 26 of the first absorbent body 20, the first covering sheets 22 positioned above and below in the thickness direction are in direct contact with each other by forming the groove 70. At the same time, the first covering sheet 22 and the top sheet 11 are in contact with each other, and the second core 31 is squeezed in the second absorbent body 30. Due to the pressing of the second core material 31, the density of the core material in this part is higher than in other parts. Further, the overlapping portion 80 is substantially non-exposed so that the length dimension in the lateral direction X of the substantially non-existing region 26 is larger than the length dimension in the lateral direction X of the corresponding groove 70 and the joint portion 60. It does not protrude from the existence area 26 and is within the range.

  According to the configuration as described above, the substantially non-existing region 26 is formed in a portion of the groove 70 corresponding to at least the overlapping portion 80. In the overlapping portion 80 between the joint portion 60 and the groove 70, the joint portion 60 and the groove 70 are formed by the heat pressing process, so that the topsheet 11 and the cushion sheet 40 are partially thinned and easily broken. ing. However, since the substantially non-existing region 26 is formed in the portion corresponding to the overlapping portion 80, even if the sheets 11 and 40 are torn, the first core material 21 does not exist, so this spills out. There is no such thing. Further, in the substantially non-existing region 26, the first covering sheet 22 covering the first core member 21 is bonded to each other in the thickness direction, so that the first core member 21 spills from the first covering sheet 22. Can be further suppressed.

  By forming the groove 70, a high-density region is formed in the second absorbent body 30 by pressing, so that body fluid such as urine is quickly absorbed by the second absorbent body 30 through the groove 70. The Therefore, body fluid does not remain on the top sheet 11 for a long time, and skin troubles due to the body fluid adhering to the wearer for a long time can be prevented. Moreover, since the 2nd core material 31 of the 2nd absorber 30 overlaps with the substantially non-existing area | region 26 of the 1st absorber 20, the absorption of the bodily fluid in this area | region can be ensured.

  By forming the groove 70 in the first absorbent body 20 and the second absorbent body 30, the first core material 21 and the second core material 31 are prevented from being swayed, and the first and second absorbent bodies 20 and 30 are maintained. Can be shaped. In addition, by forming the two strips 70 apart from each other, when there is excretion of body fluid between them, it functions as a barrier that physically prevents the flow of the body fluid to the outside of the strips 70. Can

  As the top sheet 11, a liquid-permeable fiber nonwoven fabric or the like can be used, and as the back sheet 12, a liquid-impervious film or the like can be used. As the first and second covering sheets 22 and 32, a liquid diffusible tissue paper or the like can be used. Although the superabsorbent polymer particles are used as the first core material 21, other core materials such as pulp can be used as long as they have liquid absorbency, and these may be used in combination. it can. Similarly, as the second core material 31, pulp, superabsorbent polymer particles, or a combination thereof can be used. Moreover, the core material of the same structure can also be used as the 1st and 2nd core materials 21 and 31. FIG.

  In this embodiment, the joint portion 60 has a dot shape, but it does not necessarily have a dot shape, and the top sheet 11 and the cushion sheet 40 can be prevented from being separated when the groove 70 is formed. For example, the shape, position, and the like can be selected as appropriate. For example, a plurality of joint portions 60 that extend in the vertical direction Y and are spaced apart from each other in the horizontal direction X may be used. Moreover, although the groove 70 is formed in two in the vertical direction Y, it is not limited to this. However, in order to exhibit the shape retaining function of the first and second absorbers 20 and 30, it is necessary to form at least the first and second absorbers 20 and 30. In addition, the groove 70 may extend in the horizontal direction in addition to the one extending in the vertical direction Y, and may be not only one extending in one direction but also having a corrugated shape or an annular shape.

  In the configuration as described above, the joint portion 60 is formed on the top sheet 11 and the cushion sheet 40, and this is intermittently integrated to form a sheet body. Then, the sheet body is combined with the first absorbent body 20 and the second sheet. In order to form the groove | channel 70, after superposing | stacking on a laminated body with the absorber 30, it can heat-press.

  In the above embodiment, the joint portion 60 is formed between the topsheet 11 and the cushion sheet 40 and these are partially integrated, but the cushion sheet 40 may not be included. In this case, the joint 60 is formed between the top sheet 11 and the first covering sheet 22 of the first absorbent body 20, and the intermediate sheet of the present invention can be formed by the first covering sheet 22. When forming the joint portion 60 between the top sheet 11 and the first cover sheet 22, the first core member 21 of the first absorbent body 20 is covered with the first cover sheet 22, and then the top sheet 11 is attached. The joining portion 60 can be formed by being laminated on the first covering sheet 22.

  The absorber includes the first absorber 20 and the second absorber 30, but may include only one of them. Moreover, although the groove | channel 70 reaches | attains even the 2nd absorber 30, it does not necessarily restrict to this structure. However, when the groove 70 reaches the second absorbent body 30, the absorption speed of the body fluid into the second absorbent body 30 can be accelerated, and the shape of the second absorbent body 30 can be maintained. In order to exhibit these functions, it is desirable that the groove 70 has a depth of 30% or more, particularly 50% or more of the thickness of the second absorbent body 30.

  In this invention, although it is supposed that the junction part 60 and the groove | channel 70 are formed by a heat pressing process, other well-known techniques can be used. As the bonding means 13, 51, 52, a conventional technique such as an adhesive, thermal, or ultrasonic bond can be used. Moreover, although a liquid-impervious plastic film etc. can be used as the back surface sheet 12, the fiber nonwoven fabric which considered the touch can also be further formed in the clothing side of the back surface sheet 12. FIG.

Front view of pantilina. FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a schematic cross-sectional view taken along line III-III in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panty liner 11 Top sheet 12 Back sheet 20 1st absorber 21 1st core material 22 1st coating sheet 26 Substantially non-existence area | region 30 2nd absorber 31 2nd core material 40 Cushion sheet (intermediate sheet)
60 joint 70 groove 80 overlapping part

Claims (7)

Absorbent body including a liquid-absorbent core material positioned between the front and back sheets, a top sheet located on the wearer's body side, a top sheet located on the wearer's body side, a back sheet located on the opposite side of the body side And an intermediate sheet positioned between the top sheet and the absorber, a joint unit that integrates the top sheet and the intermediate sheet by pressing, and formed from the top sheet toward the absorber. In the wearing article including the groove,
The joint portion forms a recess from the top sheet toward the intermediate sheet, and the groove is formed deeper in the thickness direction from the top sheet toward the absorber than the recess.
The joining portion and the groove include an overlapping portion formed by overlapping at least a part thereof,
The absorber includes a first absorber located on the body side, and a second absorber laminated on the first absorber and located on the opposite side,
The first absorbent body has a front end edge and a rear end edge extending in the lateral direction, and includes a first core material including superabsorbent polymer particles, and a first covering sheet covering the first core material, A substantially non-existing region in which the first core material does not substantially exist is formed at a portion corresponding to the overlapping portion,
The second absorber includes a front and rear end extending portion that extends from at least the front and rear end edges of the first absorber to the outside in the longitudinal direction, and the area of the second absorber is set to be equal to that of the first absorber. Wider than the area,
The grooves, said wearing article wherein said first absorber to reach from the front edge to the rear edge, and wherein the Rukoto extending in the longitudinal direction so as to reach the second absorber. Absorbent body including a liquid-absorbent core material positioned between the front and back sheets, a top sheet located on the wearer's body side, a top sheet located on the wearer's body side, a back sheet located on the opposite side of the body side And an intermediate sheet positioned between the top sheet and the absorber, a joint unit that integrates the top sheet and the intermediate sheet by pressing, and formed from the top sheet toward the absorber. In the wearing article including the groove,
The joint portion forms a recess from the top sheet toward the intermediate sheet, and the groove is formed deeper in the thickness direction from the top sheet toward the absorber than the recess.
The joining portion and the groove include an overlapping portion formed by overlapping at least a part thereof,
The absorber includes a first absorber located on the body side, and a second absorber laminated on the first absorber and located on the opposite side,
The first absorbent body has a front end edge and a rear end edge extending in the lateral direction, and includes a first core material including superabsorbent polymer particles, and a first covering sheet covering the first core material, A substantially non-existing region in which the first core material does not substantially exist is formed at a portion corresponding to the overlapping portion,
The second absorber includes a front and rear end extending portion that extends from at least the front and rear end edges of the first absorber to the outside in the longitudinal direction, and the area of the second absorber is set to be equal to that of the first absorber. Wider than the area,
The groove extends from the front end edge of the first absorbent body to the rear end edge and extends in the longitudinal direction so as to reach the second absorbent body,
The first core of the first absorbent body includes a portion located in the center in the lateral direction and portions located on both sides in the lateral direction,
The wearing article , wherein the substantially non-existing region is located between a portion located at the center and portions located on both sides in the lateral direction . The first core of the first absorbent body includes a portion located in the center in the lateral direction and portions located on both sides in the lateral direction,
2. The wearing article according to claim 1, wherein the substantially non-existing region is located between a portion where the first core member is located in the center and portions located on both sides in the lateral direction. Two strips are formed so as to be separated from each other in the lateral direction,
The wearing article according to any one of claims 1 to 3, wherein the substantially non-existing region is formed along the groove. The wearing article according to any one of claims 1 to 4, wherein the joint portion is formed in a dot shape so as to be separated from each other. The wearing article according to claim 5, wherein the joint portions are arranged so as to be arranged in the vertical direction and arranged in the horizontal direction. It said joining portion and the groove is worn article according to any one of claims 1 to 6 formed by heat pressing treatment.

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