JP7458714B2 - Absorbent article and method for manufacturing the absorbent article - Google Patents

Absorbent article and method for manufacturing the absorbent article Download PDF

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JP7458714B2
JP7458714B2 JP2019094769A JP2019094769A JP7458714B2 JP 7458714 B2 JP7458714 B2 JP 7458714B2 JP 2019094769 A JP2019094769 A JP 2019094769A JP 2019094769 A JP2019094769 A JP 2019094769A JP 7458714 B2 JP7458714 B2 JP 7458714B2
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sheet
skin side
skin
continuous sheet
absorbent article
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JP2020188874A (en
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翔希 長友
達也 橋本
邦彦 桂川
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Unicharm Corp
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Priority to CN202080034417.3A priority patent/CN113795228B/en
Priority to PCT/JP2020/010069 priority patent/WO2020235179A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Description

本発明は、吸収性物品、及び吸収性物品の製造方法に関する。 The present invention relates to an absorbent article and a method for manufacturing an absorbent article.

吸収性物品としてパンツ型おむつを例示できる。特許文献1には、腹側及び背側外装体を構成するシート材が、ウエスト開口部の周縁端に沿って吸収性物品の内面側に折り返された折り返し部分を有するパンツ型吸収性物品が開示されている。 An example of the absorbent article is a pants-type diaper. Patent Document 1 discloses a pants-type absorbent article in which a sheet material constituting the ventral and dorsal exterior bodies has a folded portion that is folded back toward the inner surface of the absorbent article along the peripheral edge of the waist opening. has been done.

特開2013-116196号JP2013-116196

特許文献1に記載のパンツ型吸収性物品では、ウエスト開口部の腹側外装体及び背側外装体共に資材を折り返して形成しているため、折り返す分、資材のコストがかかるという課題がある。 In the pants-type absorbent article described in Patent Document 1, both the ventral and dorsal exterior bodies at the waist opening are formed by folding back materials, which poses the problem of increased material costs due to the folding back.

本発明は、上記のような従来の問題に鑑みてなされたものであって、その目的は、胴回り開口部の端部の審美性を保持しつつ、コスト削減を図ることができる吸収性物品を提供することにある。 The present invention was made in view of the above-mentioned conventional problems, and its purpose is to provide an absorbent article that can reduce costs while maintaining the aesthetics of the end of the waist opening. It is about providing.

上記目的を達成するための主たる発明は、
互いに交差する上下方向と左右方向と前後方向とを有し、
液体を吸収する吸収性本体と、
前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、
前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材と、を有し、
前記腹側帯部材及び前記背側帯部材のうちの一方の帯部材は、第1シートと、前記第1シートとは別体の第2シートとを有し、
前記腹側帯部材及び前記背側帯部材のうちの他方の帯部材は、第3シートと、前記第3シートとは別体の第4シートとを有し、
前記第1シート、前記第2シート、前記第3シート、及び前記第4シートは、前記腹側帯部材及び前記背側帯部材の前記左右方向の両端部において接合されている吸収性物品であって、
前記腹側帯部材及び前記背側帯部材を伸長させた伸長状態において、
前記第1シートは、前記第2シートよりも非肌側に配置される非肌側部分と、前記一方の部材の上端で肌側に折り返された折り返し部分とを有し、
前記第3シートは、前記第4シートよりも非肌側に配置され、折り返されておらず、
前記一方の帯部材において、前記第2シートの上端は、複数の弾性部材のうちの最も上側に位置する弾性部材よりも下側に位置しており、
前記第1シートの前記非肌側部分と前記折り返し部分との間に、前記最も上側に位置する弾性部材が設けられており、前記最も上側に位置する弾性部材は、前記第1シートの前記非肌側部分の肌側面、及び前記折り返し部分の非肌側面に接着剤によって接合されていることを特徴とする吸収性物品である。
The main invention for achieving the above purpose is:
It has a vertical direction, a horizontal direction, and a front-back direction that intersect with each other,
an absorbent body that absorbs liquid;
a ventral band member provided along the left-right direction and joined to the front upper end of the absorbent main body;
a backside band member provided along the left-right direction and joined to the rear upper end of the absorbent main body;
One of the ventral band members and the dorsal band member includes a first sheet and a second sheet separate from the first sheet,
The other band member of the ventral band member and the dorsal band member has a third sheet and a fourth sheet separate from the third sheet,
The first sheet, the second sheet, the third sheet, and the fourth sheet are an absorbent article joined at both ends of the ventral band member and the dorsal band member in the left-right direction,
In an extended state in which the ventral band member and the dorsal band member are extended,
The first sheet has a non-skin side portion disposed on the non-skin side of the second sheet, and a folded portion folded back toward the skin side at the upper end of the one member,
The third sheet is arranged on a non-skin side than the fourth sheet and is not folded back,
In the one band member, the upper end of the second sheet is located below an uppermost elastic member among the plurality of elastic members,
The uppermost elastic member is provided between the non-skin side portion and the folded portion of the first sheet, and the uppermost elastic member is arranged between the non-skin side portion and the folded portion of the first sheet. This absorbent article is characterized in that it is bonded to the skin side of the skin-side portion and the non-skin side of the folded portion with an adhesive.

また、互いに交差する上下方向と左右方向と前後方向とを有し、液体を吸収する吸収性本体と、前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、前記腹側帯部材とは別部材として前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材とを有する吸収性物品の製造方法であって、
前記腹側帯部材及び前記背側帯部材の非肌側シートとなる、搬送方向に連続した非肌側連続シートと、前記腹側帯部材及び前記背側帯部材の肌側シートとなり、且つ、前記搬送方向と交差するCD方向の長さが前記非肌側連続シートの前記CD方向の長さより短い、前記搬送方向に連続した肌側連続シートとを、前記CD方向における前記非肌側連続シートの一端と前記肌側連続シートの一端との距離が、前記CD方向における前記非肌側連続シートの他端と前記肌側連続シートの他端との距離よりも短くなるように、前記非肌側連続シートと前記肌側連続シートとを貼り合わせる工程と、
前記非肌側連続シートの前記CD方向の前記一端を折り返さないまま、前記非肌側連続シートの前記CD方向の前記他端を前記吸収性物品の肌側となる側に折り返す工程と、
貼り合わされた前記非肌側連続シート及び前記肌側連続シートを、前記非肌側連続シート及び前記肌側連続シートの前記CD方向の中央部において一緒に切断し、腹側帯状連続シート及び背側帯状連続シートを形成する工程と、
前記吸収性本体の前側上端部と前記腹側帯状連続シートとを接合し、前記吸収性本体の後側上端部と前記背側帯状連続シートとを接合する工程と
を有し、
前記貼り合わせる工程において、
前記非肌側連続シートにピンを貫通させて、前記非肌側連続シートに非肌側開孔を形成する工程と、
前記非肌側連続シートに貫通している状態の前記ピンを、前記肌側連続シートに貫通させて、前記肌側連続シートに肌側開孔を形成する工程と
を有し、
前記折り返す工程では、前記非肌側連続シートが前記肌側開孔を肌側から覆うように前記非肌側連続シートの前記他端を折り返す
ことを特徴とする吸収性物品の製造方法である。
本発明の他の特徴については、本明細書及び添付図面の記載により明らかにする。
Also, there is provided a method for manufacturing an absorbent article having an absorbent main body that absorbs liquid and has a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other, an abdominal side belt member that is provided along the horizontal direction and joined to a front upper end portion of the absorbent main body, and a back side belt member that is provided along the horizontal direction as a separate member from the abdominal side belt member and joined to a rear upper end portion of the absorbent main body,
a step of bonding a non-skin-side continuous sheet which is continuous in a conveying direction and which becomes the non-skin-side sheet of the abdominal side belt member and the back side belt member, and a skin-side continuous sheet which is continuous in the conveying direction and becomes the skin-side sheet of the abdominal side belt member and the back side belt member and has a length in a CD direction intersecting the conveying direction shorter than a length in the CD direction of the non-skin-side continuous sheet, such that a distance between one end of the non-skin-side continuous sheet and one end of the skin-side continuous sheet in the CD direction is shorter than a distance between the other end of the non-skin-side continuous sheet and the other end of the skin-side continuous sheet in the CD direction;
a step of folding back the other end of the non-skin side continuous sheet in the CD direction to a side that will be the skin side of the absorbent article, while leaving the one end of the non-skin side continuous sheet in the CD direction unfolded;
cutting the laminated non-skin side continuous sheet and the skin side continuous sheet together at the center in the CD direction of the non-skin side continuous sheet and the skin side continuous sheet to form a ventral side belt-like continuous sheet and a dorsal side belt-like continuous sheet;
a step of joining a front upper end portion of the absorbent main body to the abdominal side belt-like continuous sheet, and joining a rear upper end portion of the absorbent main body to the dorsal side belt-like continuous sheet;
having
In the bonding step,
penetrating the non-skin side continuous sheet with a pin to form a non-skin side aperture in the non-skin side continuous sheet;
a step of penetrating the pin, which has penetrated the non-skin side continuous sheet, into the skin side continuous sheet to form a skin side aperture in the skin side continuous sheet;
having
In the folding back step, the other end of the non-skin side continuous sheet is folded back so that the non-skin side continuous sheet covers the skin side apertures from the skin side.
The present invention relates to a method for producing an absorbent article.
Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings.

本発明によれば、胴回り開口部の端部の審美性を保持しつつ、コスト削減を図ることができる吸収性物品を提供できる。 According to the present invention, it is possible to provide an absorbent article that can reduce costs while maintaining the aesthetics of the end of the waist opening.

第1実施形態に係るパンツ型使い捨ておむつ1の概略斜視図である。FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 according to a first embodiment. 第1実施形態に係る、展開且つ伸長状態のおむつ1を肌側から見た概略平面図である。FIG. 1 is a schematic plan view of the diaper 1 in an unfolded and stretched state according to the first embodiment, viewed from the skin side. 図2のA-A線の概略断面図である。3 is a schematic cross-sectional view taken along line AA in FIG. 2. FIG. 図3の背側帯部材30側を拡大した概略拡大図である。4 is a schematic enlarged view of the back-side belt member 30 side of FIG. 3. FIG. 第2実施形態に係るパンツ型使い捨ておむつ1の概略斜視図である。FIG. 11 is a schematic perspective view of a pants-type disposable diaper 1 according to a second embodiment. 図5のB-B線の概略断面図である。6 is a schematic cross-sectional view taken along line BB in FIG. 5. FIG. 第1実施形態に係るパンツ型使い捨ておむつ1の製造フローを示す概略図である。FIG. 1 is a schematic diagram showing a manufacturing flow of the pants-type disposable diaper 1 according to the first embodiment. 第2実施形態に係るパンツ型使い捨ておむつ1の工程S210及びS211を説明する断面模式図である。11 is a schematic cross-sectional view illustrating steps S210 and S211 of the pants-type disposable diaper 1 according to the second embodiment. FIG. 第2実施形態に係るパンツ型使い捨ておむつ1の製造フローを示す概略図である。FIG. 2 is a schematic diagram showing a manufacturing flow of a pants-type disposable diaper 1 according to a second embodiment.

本明細書及び添付図面の記載により、少なくとも以下の事項が明らかとなる。
互いに交差する上下方向と左右方向と前後方向とを有し、液体を吸収する吸収性本体と、前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材と、を有し、前記腹側帯部材及び前記背側帯部材のうちの一方の帯部材は、第1シートと第2シートとを有し、前記腹側帯部材及び前記背側帯部材のうちの他方の帯部材は、第3シートと第4シートとを有し、前記第1シート、前記第2シート、前記第3シート、及び前記第4シートは、前記腹側帯部材及び前記背側帯部材の前記左右方向の両端部において接合されている吸収性物品であって、前記腹側帯部材及び前記背側帯部材を伸長させた伸長状態において、前記第1シートは、前記第2シートよりも非肌側に配置される非肌側部分と、前記一方の部材の上端で肌側に折り返された折り返し部分とを有し、前記第3シートは、前記第4シートよりも非肌側に配置され、折り返されていないことを特徴とする吸収性物品である。
At least the following points will become apparent from the description of this specification and the accompanying drawings.
The present invention relates to a diaper diaper, and a diaper bag, comprising: an absorbent body having a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other and that absorbs liquid; an abdominal side belt member that is provided along the horizontal direction and joined to a front upper end portion of the absorbent body; and a back side belt member that is provided along the horizontal direction and joined to a rear upper end portion of the absorbent body, wherein one of the abdominal side belt member and the back side belt member has a first sheet and a second sheet, and the other of the abdominal side belt member and the back side belt member has a third sheet and a fourth sheet, and the first sheet, the The second sheet, the third sheet, and the fourth sheet are joined at both left-right ends of the abdominal side belt member and the back side belt member, and in an extended state in which the abdominal side belt member and the back side belt member are extended, the first sheet has a non-skin side portion that is positioned away from the skin side of the second sheet and a folded-back portion that is folded back to the skin side at the upper end of one of the members, and the third sheet is positioned away from the skin side of the fourth sheet and is not folded back.

このような吸収性物品によれば、胴回り部の一方の帯部材である腹側帯部材側が折り返し部分を有することで吸収性物品の審美性を保持しつつ、他方側の背側帯部材の上端が折り返されていないことで、胴回り部を形成するための資材量を削減でき、結果としてコスト削減を図ることができる。 According to such an absorbent article, one of the belt members in the waist region, that is, the ventral side band member side, has a folded-back portion, thereby maintaining the aesthetics of the absorbent article, while the upper end of the dorsal side band member on the other side is folded back. By not forming the body part, it is possible to reduce the amount of materials used to form the waist portion, and as a result, it is possible to reduce costs.

かかる吸収性物品であって、前記第3シートの上端位置と前記第4シートの上端位置とは、前記上下方向にずれていることが望ましい。 In such an absorbent article, it is desirable that the upper end position of the third sheet and the upper end position of the fourth sheet be shifted in the vertical direction.

このような吸収性物品によれば、折り返していない帯部材側において、各シートの上端位置がずれることで端部の剛性が低くなり、着用時の肌触りの不快感を軽減できる。 According to such an absorbent article, since the upper end position of each sheet is shifted on the side of the unfolded band member, the rigidity of the end portion is lowered, and the uncomfortable feeling when worn can be reduced.

かかる吸収性物品であって、前記一方の帯部材は、前記折り返し部分に肌側から重なるように設けられた別のシートをさらに有することが望ましい。 In such an absorbent article, it is preferable that the one of the belt members further has another sheet arranged so as to overlap the folded portion from the skin side.

このような吸収性物品によれば、別資材(別のシート)があることでさらに強度が高まり、吸収性物品を引き上げる際に破損しにくくなる。 With such an absorbent article, the presence of the separate material (separate sheet) further increases its strength, making it less likely to break when the absorbent article is pulled up.

かかる吸収性物品であって、前記第1シートの平均坪量は、前記第2シートの平均坪量以上であり、前記第3シートの平均坪量は、前記第4シートの平均坪量以上であることが望ましい。 In such an absorbent article, the average basis weight of the first sheet is greater than or equal to the average basis weight of the second sheet, and the average basis weight of the third sheet is greater than or equal to the average basis weight of the fourth sheet. It is desirable that there be.

このような吸収性物品によれば、非肌側に配置される第1シート及び第3シートの平均坪量が高いことで強度を維持でき、引き上げ時に破れにくくなる。平均坪量が低い第2シート及び第4シートは、剛性が低くなることから肌触りが良好になり、また、通気性や透湿性も高いことから、吸収性物品内の湿気の排出を促すことができる。 According to such an absorbent article, since the average basis weight of the first sheet and the third sheet disposed on the non-skin side is high, the strength can be maintained and the absorbent article becomes difficult to tear when being pulled up. The second sheet and the fourth sheet, which have a low average basis weight, have low rigidity and therefore feel good to the touch, and also have high air permeability and moisture permeability, so they can promote the drainage of moisture within the absorbent article. can.

かかる吸収性物品であって、前記第1シート及び前記第3シート、或いは、前記第2シート及び前記第4シートの少なくともいずれか一方において、複数の開孔が設けられていることが望ましい。 In such an absorbent article, it is desirable that at least one of the first sheet and the third sheet, or the second sheet and the fourth sheet, has a plurality of openings.

このような吸収性物品によれば、開孔が存在することで、通気性がより向上する。 According to such an absorbent article, the presence of the openings further improves breathability.

かかる吸収性物品であって、前記一方の帯部材は、前記第1シートの前記非肌側部分と前記第2シートとを貫通するように設けられた複数の貫通孔を有し、前記折り返し部分は、前記複数の貫通孔が存在しない貫通孔非存在領域であり、前記折り返し部分は、前記前後方向に見て、前記複数の貫通孔と重なっており、前記第1シートと前記第2シートの間に、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されていることが望ましい。 In such an absorbent article, it is desirable that the one belt member has a plurality of through holes provided so as to penetrate the non-skin side portion of the first sheet and the second sheet, the folded-back portion is a through hole non-existent area where the plurality of through holes are not present, the folded-back portion overlaps the plurality of through holes when viewed in the front-rear direction, and a plurality of elastic members that expand and contract in the left-right direction are joined by an adhesive between the first sheet and the second sheet in a state aligned in the up-down direction.

このような吸収性物品によれば、貫通孔によって通気性を向上させつつ、折り返し部分により、貫通孔から接着剤が染み出る虞を防止する。それにより、通気性を確保しながら、接着剤の染み出しによる着用者への不快感を軽減する。 According to such an absorbent article, the through-holes improve air permeability, and the folded portions prevent the adhesive from seeping out from the through-holes. This reduces discomfort to the wearer due to adhesive seepage while ensuring breathability.

かかる吸収性物品であって、前記吸収性本体は、前記複数の貫通孔のうちの少なくとも一部と前記前後方向に見て重なる重なり領域を有し、前記折り返し部分の肌側面の一部と前記重なり領域の非肌側面とが接着剤により接合されていることが望ましい。 In such an absorbent article, it is desirable that the absorbent body has an overlapping region that overlaps at least a portion of the plurality of through holes when viewed in the front-to-rear direction, and that a portion of the skin side of the folded portion and the non-skin side of the overlapping region are joined with an adhesive.

このような吸収性物品によれば、貫通孔によって通気性を向上させつつ、折り返し部分が前後方向に見て貫通孔と吸収性本体との間に介在することにより、吸収性本体と腹側又は背側帯部材とが接合される際の非肌側への接着剤の染み出しも防止できる。よって、接着剤の染み出しによる着用者の不快感を軽減する。 In this type of absorbent article, the through holes improve breathability, while the folded-back portion is interposed between the through holes and the absorbent body when viewed in the front-to-back direction, which prevents adhesive from seeping out onto the non-skin side when the absorbent body is joined to the ventral or dorsal belt member. This reduces the discomfort felt by the wearer due to adhesive seeping out.

かかる吸収性物品であって、前記第1シートと前記第2シートとの間には、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されており、前記第3シートと前記第4シートとの間には、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されており、前記腹側帯部材及び前記背側帯部材の各々において、最も下側に位置する弾性部材に塗布された接着剤の平均坪量は、最も上側に位置する弾性部材に塗布された接着剤の平均坪量よりも高いことが望ましい。
ことを特徴とする吸収性物品。
In such an absorbent article, a plurality of elastic members that stretch in the left-right direction are bonded between the first sheet and the second sheet with an adhesive in a state lined up in the vertical direction, and a plurality of elastic members that stretch in the left-right direction are bonded between the third sheet and the fourth sheet with an adhesive in a state lined up in the vertical direction, and it is desirable that the average basis weight of the adhesive applied to the lowermost elastic member in each of the abdominal side belt member and the dorsal side belt member is higher than the average basis weight of the adhesive applied to the uppermost elastic member.
An absorbent article characterized by:

このような吸収性物品によれば、腹側帯部材及び背側帯部材の各々において最も下側に位置する弾性部材は、脚回り開口の少なくとも一部を形成しており、その最も下側に位置する弾性部材に対する接着剤の平均坪量が高いことで、弾性部材は強固に接合され、着用者の脚が動いても弾性部材は外れにくくなる。 In this absorbent article, the elastic members located at the lowest position on each of the abdominal belt member and the dorsal belt member form at least a part of the leg openings, and the high average basis weight of the adhesive on the elastic members located at the lowest position ensures that the elastic members are firmly bonded, making them less likely to come off even when the wearer's legs move.

かかる吸収性物品であって、前記一方の帯部材において、前記第2シートの上端は、前記複数の弾性部材のうちの最も上側に位置する弾性部材よりも下側に位置していることが望ましい。 In such an absorbent article, in the one band member, the upper end of the second sheet is preferably located below an uppermost elastic member of the plurality of elastic members. .

このような吸収性物品によれば、折り返し部分を有する一方の帯部材では、帯部材の上端まで第2シートが配置されていなくても、当該上端では、第1シートの非肌側部分と折り返し部分との間に弾性部材を接合することが可能である。このように第2シートを配置する量を減らすことで、コスト削減を図ることができる。 According to such an absorbent article, in one of the band members having a folded part, even if the second sheet is not arranged up to the upper end of the band member, the folded part and the non-skin side part of the first sheet overlap at the upper end. It is possible to join an elastic member between the parts. By reducing the amount of second sheets arranged in this way, cost reduction can be achieved.

かかる吸収性物品であって、前記一方の帯部材において、前記第2シートの上端は、前記複数の弾性部材のうちの最も上側に位置する弾性部材よりも上側に位置していることが望ましい。 In such an absorbent article, in the one band member, it is desirable that the upper end of the second sheet be located above an uppermost elastic member of the plurality of elastic members.

このような吸収性物品によれば、折り返し部分を有する一方の帯部材において、上端まで第2シートが存在することで上端部の強度が向上し、吸収性物品の引き上げ時に破損されにくくなる。 According to such an absorbent article, the presence of the second sheet up to the upper end of one of the band members having the folded portion improves the strength of the upper end, making it less likely to be damaged when the absorbent article is pulled up.

かかる吸収性物品であって、前記他方の帯部材において、前記複数の弾性部材のうちの最も上側に位置する弾性部材を第1弾性部材とし、前記第1弾性部材の下側に位置する弾性部材を第2弾性部材とすると、前記他方の帯部材の上端から前記第1弾性部材までの距離は、前記第1弾性部材の下端から前記第2弾性部材の上端までの距離よりも長いことが望ましい。 In such an absorbent article, in the other band member, the uppermost elastic member of the plurality of elastic members is a first elastic member, and the elastic member is located below the first elastic member. is the second elastic member, the distance from the upper end of the other band member to the first elastic member is preferably longer than the distance from the lower end of the first elastic member to the upper end of the second elastic member. .

このような吸収性物品によれば、他方の帯部材の上端から第1弾性部材までの距離が、第1弾性部材の下端から第2弾性部材の上端までの距離よりも短い場合は、第1及び第2弾性部材の収縮の影響を受けやすく、上端縁が収縮し過ぎてしまう虞がある。他方の帯部材の上端から第1弾性部材までの距離を、第1弾性部材の下端から第2弾性部材の上端までの距離よりも長くすることで、弾性部材の収縮の影響を受けにくくし、折り返されていない帯部材の上端縁が綺麗に形成されやすい。 According to such an absorbent article, when the distance from the upper end of the other band member to the first elastic member is shorter than the distance from the lower end of the first elastic member to the upper end of the second elastic member, the first Also, it is susceptible to the contraction of the second elastic member, and there is a risk that the upper edge may contract too much. By making the distance from the upper end of the other band member to the first elastic member longer than the distance from the lower end of the first elastic member to the upper end of the second elastic member, it is made less susceptible to the effects of contraction of the elastic member, The upper edge of the unfolded band member is easily formed neatly.

互いに交差する上下方向と左右方向と前後方向とを有し、液体を吸収する吸収性本体と、前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、前記腹側帯部材とは別部材として前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材とを有する吸収性物品の製造方法であって、前記腹側帯部材及び前記背側帯部材の非肌側シートとなる、搬送方向に連続した非肌側連続シートと、前記腹側帯部材及び前記背側帯部材の肌側シートとなり、且つ、前記搬送方向と交差するCD方向の長さが前記非肌側連続シートの前記CD方向の長さより短い、前記搬送方向に連続した肌側連続シートとを、前記CD方向における前記非肌側連続シートの一端と前記肌側連続シートの一端との距離が、前記CD方向における前記非肌側連続シートの他端と前記肌側連続シートの他端との距離よりも短くなるように、前記非肌側連続シートと前記肌側連続シートとを貼り合わせる工程と、前記非肌側連続シートの前記CD方向の前記一端を折り返さないまま、前記非肌側連続シートの前記CD方向の前記他端を前記吸収性物品の肌側となる側に折り返す工程と、貼り合わされた前記非肌側連続シート及び前記肌側連続シートを、前記非肌側連続シート及び前記肌側連続シートの前記CD方向の中央部において一緒に切断し、腹側帯状連続シート及び背側帯状連続シートを形成する工程と、前記吸収性本体の前側上端部と前記腹側帯状連続シートとを接合し、前記吸収性本体の後側上端部と前記背側帯状連続シートとを接合する工程とを有することを特徴とする吸収性物品の製造方法である。 an absorbent body that absorbs liquid and has a vertical direction, a left-right direction, and a front-back direction that intersect with each other; and a ventral band member that is provided along the left-right direction and joined to the front upper end of the absorbent body. , a method for manufacturing an absorbent article having a dorsal band member provided along the left-right direction as a separate member from the abdominal band member and joined to the rear upper end of the absorbent body, the method comprising: A non-skin side continuous sheet that is continuous in the conveyance direction and serves as a non-skin side sheet of the side band members and the dorsal side band member, and a non-skin side continuous sheet that becomes the skin side sheet of the ventral side band member and the dorsal side band member and intersects with the conveyance direction. A skin-side continuous sheet that is continuous in the conveyance direction and whose length in the CD direction is shorter than the length of the non-skin-side continuous sheet in the CD direction is connected to one end of the non-skin-side continuous sheet in the CD direction and the skin side. The non-skin side continuous sheet and the skin side continuous sheet are arranged so that the distance from one end of the continuous sheet is shorter than the distance between the other end of the non-skin side continuous sheet and the other end of the skin side continuous sheet in the CD direction. a step of bonding the non-skin side continuous sheet to the skin side of the absorbent article; and without folding back the one end of the non-skin side continuous sheet in the CD direction, attaching the other end of the non-skin side continuous sheet in the CD direction to the skin side of the absorbent article. a step of folding the pasted non-skin side continuous sheet and the skin side continuous sheet together at the center of the CD direction of the non-skin side continuous sheet and the skin side continuous sheet; forming a ventral strip continuous sheet and a dorsal strip continuous sheet, joining the front upper end of the absorbent main body and the ventral strip continuous sheet, and joining the rear upper end of the absorbent main body and the dorsal This is a method for manufacturing an absorbent article, comprising the step of joining a continuous belt-like sheet.

このような製造方法によれば、胴回り開口部の端部の審美性を有しつつ、コスト削減が可能な吸収性物品を製造することができる。 According to such a manufacturing method, it is possible to manufacture an absorbent article that can reduce costs while maintaining the aesthetics of the end of the waist opening.

かかる吸収性物品の製造方法であって、前記非肌側連続シートの前記CD方向の前記一端と、前記肌側連続シートの前記CD方向の前記一端とを揃えるように、前記非肌側連続シート又は前記肌側連続シートの前記CD方向の位置を調整する工程を有することが望ましい。 In the method for manufacturing such an absorbent article, the non-skin side continuous sheet is produced such that the one end of the non-skin side continuous sheet in the CD direction and the one end of the skin side continuous sheet in the CD direction are aligned. Alternatively, it is desirable to have a step of adjusting the position of the skin-side continuous sheet in the CD direction.

このような製造方法によれば、胴回り開口部の一方側上端部となる端部を揃えることとなり、当該端部の審美性を確保する。 This manufacturing method aligns the ends that will become the upper ends on one side of the waist opening, ensuring the aesthetics of those ends.

かかる吸収性物品の製造方法であって、前記接合する工程では、前記腹側帯状連続シート及び前記背側帯状連続シートの切断された側の端の一部を前記吸収性本体が覆うように接合するのが望ましい。 In the method for manufacturing such an absorbent article, in the step of joining, the absorbent main body covers a part of the cut side ends of the ventral continuous belt-like sheet and the back continuous belt-like sheet. It is desirable to do so.

このような製造方法によれば、切断された側がそのまま胴回り部の下端(すなわち、脚回り開口部の一部)を構成することになり、当該下端において各帯部材の各シートのずれが生じにくくなる。それにより、脚回り開口部の審美性を得ることができる。また、切断後に、切断された側の端が胴回り部の上端にくるように向きを変える等の工程を設けないことから、製造工程のコスト削減に繋がる。 According to such a manufacturing method, the cut side directly constitutes the lower end of the trunk section (i.e., part of the leg opening), and it is difficult for the sheets of each band member to shift at the lower end. Become. Thereby, aesthetics of the leg opening can be achieved. Moreover, since there is no step such as changing the orientation of the cut end so that the cut end is at the upper end of the waist portion after cutting, the cost of the manufacturing process can be reduced.

かかる吸収性物品の製造方法であって、前記貼り合わせる工程において、前記非肌側連続シートにピンを貫通させて、前記非肌側連続シートに非肌側開孔を形成する工程と、前記非肌側連続シートに貫通している状態の前記ピンを、前記肌側連続シートに貫通させて、前記肌側連続シートに肌側開孔を形成する工程とを有し、前記折り返す工程では、前記非肌側連続シートが前記肌側開孔を肌側から覆うように前記非肌側連続シートの前記他端を折り返すのが望ましい。 The method for manufacturing such an absorbent article includes a step of penetrating the non-skin side continuous sheet with a pin to form a non-skin side opening in the non-skin side continuous sheet in the bonding step; forming a skin-side opening in the skin-side continuous sheet by passing the pin penetrating the skin-side continuous sheet through the skin-side continuous sheet, and in the folding step, the It is desirable that the other end of the non-skin side continuous sheet is folded back so that the non-skin side continuous sheet covers the skin side openings from the skin side.

このような製造方法によれば、非肌側連続シートと肌側連続シートとの貼り合わせ工程時に同時に開孔を形成することができ、製造工程のコスト削減を図れる。 According to such a manufacturing method, the holes can be formed at the same time during the bonding process of the non-skin side continuous sheet and the skin side continuous sheet, and the cost of the manufacturing process can be reduced.

かかる吸収性物品の製造方法であって、前記折り返す工程の前に、前記肌側連続シートの肌側面の前記肌側開孔が存在しない領域に接着剤を塗布する工程を有し、前記折り返す工程では、前記接着剤が塗布された領域に前記非肌側連続シートが重なるように、前記非肌側連続シートの前記他端を折り返すのが望ましい。 The method for manufacturing such an absorbent article includes, before the folding step, applying an adhesive to a region of the skin side surface of the skin-side continuous sheet where the skin-side openings do not exist, and the folding step Then, it is desirable to fold back the other end of the non-skin side continuous sheet so that the non-skin side continuous sheet overlaps the area where the adhesive is applied.

このような製造方法によれば、接着剤に重なるように非肌側連続シートを折り返すことで、肌側への接着剤の染み出しを防止する。染み出しにくくすることで、染み出しによる着用者への不快感を軽減する吸収性物品を製造できる。 This manufacturing method prevents the adhesive from seeping out onto the skin side by folding back the non-skin side continuous sheet so that it overlaps the adhesive. By making it less likely to seep out, it is possible to manufacture an absorbent article that reduces discomfort to the wearer caused by seeping out.

===第1実施形態===
以下、本発明に係る吸収性物品として、乳幼児向けのパンツ型使い捨ておむつを例に挙げて実施形態を説明する。但し上記に限定されず、本発明に係る吸収性物品は、大人向けの使い捨ておむつ、ショーツ型の生理用ナプキン、フックテープで着用者に装着するテープタイプの使い捨ておむつ等にも適用可能である。
===First embodiment===
EMBODIMENT OF THE INVENTION Hereinafter, embodiments will be described using a pants-type disposable diaper for infants as an example of an absorbent article according to the present invention. However, the absorbent article according to the present invention is not limited to the above, and can also be applied to disposable diapers for adults, shorts-type sanitary napkins, tape-type disposable diapers that are attached to the wearer with hook tape, and the like.

<パンツ型使い捨ておむつ1の構成>
図1は、第1実施形態に係るパンツ型使い捨ておむつ1(以下「おむつ」)の概略斜視図である。図2は、第1実施形態に係る、展開且つ伸長状態のおむつ1を肌側から見た概略平面図である。図3は、図2のA-A線の概略断面図である。
<Configuration of pants-type disposable diaper 1>
FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (hereinafter referred to as "diaper") according to a first embodiment. FIG. 2 is a schematic plan view of the diaper 1 in an unfolded and stretched state according to the first embodiment, viewed from the skin side. FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. 2.

このおむつ1は、図1のような着用前のパンツ型状態において、「上下方向」と、上下方向と直交する「左右方向」と、上下方向及び左右方向と直交する「前後方向」と、を有している。なお、上下方向については、上側が、着用者の胴回り開口側に対応し、下側が、着用者の股下側に対応している。また、前後方向については、前側が着用者の腹側に対応し、後側が着用者の背側に対応している。 This diaper 1, in a pants-like state before being worn as shown in FIG. have. In addition, regarding the vertical direction, the upper side corresponds to the wearer's waist opening side, and the lower side corresponds to the wearer's crotch side. In addition, in the front-rear direction, the front side corresponds to the wearer's ventral side, and the rear side corresponds to the wearer's back side.

図1のパンツ型状態において、おむつ1は、液体を吸収する吸収性本体10と、左右方向に沿って設けられた腹側帯部材20と、この腹側帯部材20の後側に位置しつつ、左右方向に沿って設けられた背側帯部材30とを有する。吸収性本体10は、腹側帯部材20と背側帯部材30との間に股下部として設けられる。腹側帯部材20と背側帯部材30とは、共同して、上下方向の上側に胴回り開口BHを形成し、着用者の胴回りに当てられる胴回り部2でもある。 In the pants-shaped state shown in FIG. 1, the diaper 1 includes an absorbent main body 10 that absorbs liquid, a ventral band member 20 provided along the left-right direction, and a ventral band member 20 that is located behind the ventral band member 20 and It has a back side band member 30 provided along the direction. The absorbent main body 10 is provided as a crotch area between the ventral band member 20 and the dorsal band member 30. The ventral band member 20 and the dorsal band member 30 together form a waist opening BH on the upper side in the vertical direction, and also serve as a waist portion 2 that is applied to the wearer's waist.

また、腹側帯部材20の左右方向の各端部20e,20eと、対応する背側帯部材30の左右方向の各端部30e,30eとは、溶着等により接合されている。そして、これにより、腹側帯部材20及び背側帯部材30が、吸収性本体10と共同して、下側かつ左右方向の両側にそれぞれ脚回り開口LH,LHを一つずつ形成している。 Further, each end 20e, 20e of the ventral band member 20 in the left-right direction and each end 30e, 30e of the corresponding dorsal band member 30 in the left-right direction are joined by welding or the like. As a result, the ventral band member 20 and the dorsal band member 30 work together with the absorbent main body 10 to form one leg opening LH, LH on the lower side and on both sides in the left and right direction, respectively.

ここで、「展開状態」とは、図1のパンツ型状態のおむつ1の左右方向両側の接合を解くことで、腹側帯部材20と背側帯部材30とを分離するとともに、おむつ1を上下方向に開くことで、おむつ1を平面上に展開した状態のことである。また、「伸長状態」とは、製品(おむつ1)を皺無く伸長させた状態、具体的には、おむつ1を構成する各部材(例えば、吸収性本体10や腹側帯部材20等)の寸法がその部材単体の寸法と一致又はそれに近い長さになるまで伸長した状態のことを言う。 The "unfolded state" refers to the state in which the diaper 1 is unfolded on a flat surface by undoing the connections on both the left and right sides of the pants-type diaper 1 in Fig. 1 to separate the abdominal belt member 20 and the rear belt member 30 and opening the diaper 1 vertically. The "stretched state" refers to the state in which the product (diaper 1) is stretched without wrinkles, specifically, the state in which each of the components constituting the diaper 1 (e.g., the absorbent body 10, abdominal belt member 20, etc.) is stretched to the extent that its dimensions match or are close to the dimensions of the individual components.

展開状態において、おむつ1は、互いに直交する三方向として長手方向と左右方向と厚さ方向(図2では紙面を貫通する方向)とを有している。なお、長手方向は、前述の上下方向に沿っている。そして、長手方向の一方側が腹側(前側)に対応し、他方側が背側(後側)に対応している。また、長手方向の外側が、上下方向の上側(胴回り開口BH側)に対応し、長手方向の内側が、上下方向の下側(股下側)に対応している。そして、このように長手方向と上下方向とは互いに似通った方向であることから、以下では、説明の都合上、この展開状態においても、長手方向に代えて上下方向を用いて説明することもある。一方、左右方向は、前述のパンツ型状態における左右方向と同義である。また、厚さ方向については、一方側が、着用者の身体に接する肌側に対応し、他方側が、その逆側の非肌側に対応している。 In the unfolded state, the diaper 1 has three directions that are orthogonal to each other: a longitudinal direction, a left-right direction, and a thickness direction (in FIG. 2, a direction penetrating the paper surface). Note that the longitudinal direction is along the above-mentioned up-down direction. One side in the longitudinal direction corresponds to the ventral side (front side), and the other side corresponds to the dorsal side (rear side). Further, the outer side in the longitudinal direction corresponds to the upper side in the vertical direction (the waist opening BH side), and the inner side in the longitudinal direction corresponds to the lower side in the vertical direction (the crotch side). Since the longitudinal direction and the vertical direction are similar to each other, in the following, for convenience of explanation, the vertical direction may be used instead of the longitudinal direction even in this unfolded state. . On the other hand, the left-right direction has the same meaning as the left-right direction in the pants-type state described above. In addition, in the thickness direction, one side corresponds to the skin side in contact with the wearer's body, and the other side corresponds to the opposite non-skin side.

図2の展開状態のおむつ1では、腹側帯部材20と背側帯部材30との間に吸収性本体10が長手方向に沿って掛け渡されつつ、同吸収性本体10の前側上端部10eaと腹側帯部材20とが接合固定され、同吸収性本体10の後側上端部10ebと背側帯部材30とが接合固定されている。これにより、その外観形状は、平面視略H型状をなしている。また、この状態から、吸収性本体10における長手方向の所定位置C10(長手方向におけるおむつ1の中央位置C10)を折り位置としておむつ1が二つ折りされるとともに、前述のように、腹側及び背側帯部材20、30の左右方向の端部20e,30e同士が接合されることで、図1に示すパンツ型のおむつ1となる。 In the diaper 1 in the unfolded state shown in FIG. 2, the absorbent body 10 is hung between the abdominal belt member 20 and the rear belt member 30 in the longitudinal direction, while the front upper end 10ea of the absorbent body 10 is joined and fixed to the abdominal belt member 20, and the rear upper end 10eb of the absorbent body 10 is joined and fixed to the rear belt member 30. As a result, the external shape is generally H-shaped in plan view. From this state, the diaper 1 is folded in half at a predetermined position C10 in the longitudinal direction of the absorbent body 10 (the central position C10 of the diaper 1 in the longitudinal direction) as the folding position, and the left and right ends 20e, 30e of the abdominal and rear belt members 20, 30 are joined together as described above, to form the pants-type diaper 1 shown in FIG. 1.

吸収性本体10として、吸収体11と、吸収体11よりも肌側に配置される液透過性のトップシート(不図示)と、吸収体11よりも非肌側に配置される液不透過性のバックシート(不図示)とを有するものを例示できる。吸収体11は、尿等の***物を吸収保持するものであり、高吸収性ポリマー(SAP)を含むパルプ等の液体吸収性繊維が所定の形状に成形されたものを例示できる。 The absorbent body 10 includes an absorbent body 11, a liquid-permeable top sheet (not shown) disposed closer to the skin than the absorbent body 11, and a liquid-impermeable top sheet disposed closer to the non-skin side than the absorbent body 11. An example of this is a back sheet (not shown). The absorbent body 11 absorbs and retains excreta such as urine, and can be exemplified by liquid absorbent fibers such as pulp containing super absorbent polymer (SAP) molded into a predetermined shape.

<腹側帯部材20及び背側帯部材30の構成>
腹側帯部材20、及び、背側帯部材30は、それぞれ不織布等の2枚のシート部材から構成され、ここでは、腹側帯部材20及び背側帯部材30のうちの一方の帯部材を構成するシート部材を第1シート及び第2シートとし、腹側帯部材20及び背側帯部材の30のうちの他方の帯部材を構成するシート部材を第3シートと第4シートとする。本実施形態では、図3に示すように、腹側帯部材20(所謂、一方の帯部材)が第1シート21と第2シート22とを有し、背側帯部材30(所謂、他方の帯部材)が第3シート31と、第3シート31よりも着用者の肌側に配置される第4シート32とを有する場合を例示する。
<Configuration of ventral band member 20 and dorsal band member 30>
The ventral band member 20 and the dorsal band member 30 are each composed of two sheet members such as nonwoven fabric, and here, the sheet member constituting one of the ventral band member 20 and the dorsal band member 30 is used. are referred to as a first sheet and a second sheet, and sheet members constituting the other of the ventral band member 20 and the dorsal band member 30 are referred to as a third sheet and a fourth sheet. In this embodiment, as shown in FIG. 3, a ventral band member 20 (so-called one band member) has a first sheet 21 and a second sheet 22, and a dorsal band member 30 (so-called the other band member) has a first sheet 21 and a second sheet 22. ) includes a third sheet 31 and a fourth sheet 32 arranged closer to the wearer's skin than the third sheet 31.

また、腹側帯部材20及び背側帯部材30は、左右方向に伸縮する複数の弾性部材23,33を有している。そして、第1シート21、第2シート22、第3シート31、及び第4シート32は、吸収性本体10よりも非肌側に配置されている。そして、図2に示すように、第1シート21、第2シート22、第3シート31及び第4シート32は、腹側帯部材20及び背側帯部材30の左右方向の両端部20e、30eにおいて溶着等によって接合されている。 Further, the ventral band member 20 and the dorsal band member 30 have a plurality of elastic members 23 and 33 that expand and contract in the left-right direction. The first sheet 21, the second sheet 22, the third sheet 31, and the fourth sheet 32 are arranged closer to the non-skin side than the absorbent main body 10. As shown in FIG. 2, the first sheet 21, the second sheet 22, the third sheet 31, and the fourth sheet 32 are welded at both ends 20e and 30e in the left and right direction of the ventral band member 20 and the dorsal band member 30. It is joined by etc.

従来、おむつ1等の吸収性物品の胴回り開口部においては、腹側及び背側共にその上端で、資材を吸収性物品の内面側に折り返して形成することが多いが、折り返す分、資材のコストがかかる点が課題でもある。 Conventionally, the waist opening of an absorbent article such as a diaper 1 is often formed by folding material back toward the inner surface of the absorbent article at the upper ends of both the ventral and dorsal sides, but the folding reduces the cost of the material. This is also an issue.

その点、図3に示すように、本発明の胴回り部2では、腹側及び背側帯部材(20、30)を伸長させた伸長状態において、腹側帯部材20の第1シート21は、第2シート22よりも非肌側に配置される非肌側部分21eと、腹側帯部材20の上端20enで肌側に折り返された折り返し部分21fとを有し、一方で、背側帯部材30の第3シート31は、第4シート32よりも非肌側に配置され、折り返されていない。このように、胴回り部2の一方の帯部材である腹側帯部材20側が折り返し部分21fを有することでおむつ1の審美性を保持しつつ、他方側の背側帯部材30の上端が折り返されていないことで、胴回り部2を形成するための資材の量を削減でき、結果としてコスト削減を図ることができる。 In this regard, as shown in FIG. 3, in the waist portion 2 of the present invention, in the stretched state in which the ventral and dorsal band members (20, 30) are extended, the first sheet 21 of the ventral band member 20 is It has a non-skin side portion 21e that is arranged on the non-skin side of the sheet 22 and a folded portion 21f that is folded back toward the skin side at the upper end 20en of the ventral side band member 20. The sheet 31 is arranged closer to the non-skin side than the fourth sheet 32 and is not folded back. In this way, by having the folded portion 21f on the side of the ventral band member 20, which is one band member of the waist portion 2, the aesthetics of the diaper 1 can be maintained, while the upper end of the dorsal side band member 30 on the other side is not folded back. By doing so, the amount of materials for forming the waist portion 2 can be reduced, and as a result, costs can be reduced.

そして、上述のように腹側帯部材20側に折り返し部分21fを設ける場合は、使用者が寝ている状態でおむつ1を着用させる際、おむつ1を引き上げる力が掛かり易い腹側帯部材20の強度を保つことができる。さらに、寝ている状態では、おむつ1の排尿位置が背側寄りになり易いが、背側帯部材30に折り返しがないことで通気性を保持し易くなる。反対に、背側帯部材30側に折り返し部分(不図示)を設ける場合には、使用者が立っている状態で着用させる際に背側帯部材30を掴んで引き上げても、折り返し部分によって強度を保つことができる。また、立位では前側に排尿位置が形成されるため、腹側帯部材20に折り返しがないことで通気性をより確保し易くなる。 In the case where the folded portion 21f is provided on the side of the ventral band member 20 as described above, the strength of the ventral band member 20, which is easily subjected to the force of pulling up the diaper 1 when the user puts on the diaper 1 while sleeping, is reduced. can be kept. Furthermore, while the diaper 1 is in a sleeping state, the urinating position of the diaper 1 tends to be closer to the back side, but since the back band member 30 is not folded back, breathability can be easily maintained. On the other hand, when a folded part (not shown) is provided on the side of the back side band member 30, the strength is maintained by the folded part even if the user grabs and pulls up the back side band member 30 when wearing it while standing. be able to. In addition, since the urination position is formed on the front side in the standing position, the absence of folds in the ventral band member 20 makes it easier to ensure ventilation.

また、折り返し部分21fの上下方向の長さは、25mm以上が好ましい。上下方向において25mm以上設けることで、第2シート22の上端部の位置が多少ずれた場合でも、折り返し部分21fが第2シート22の上端を覆うように肌側に折り返すことができ、折り返し部分21fの審美性を保つことができる。 The vertical length of the folded portion 21f is preferably 25 mm or more. By providing a vertical length of 25 mm or more, even if the position of the upper end of the second sheet 22 is slightly misaligned, the folded portion 21f can be folded back toward the skin to cover the upper end of the second sheet 22, and the aesthetics of the folded portion 21f can be maintained.

また、図3に示すように、本実施形態の背側帯部材30の第3シート31の上端位置31enと第4シート32の上端位置32enとは、上下方向において一致しているが、当該上端位置31en及び32enは、上下方向にずれていてもよい。折り返していない背側帯部材30側において、各第3シート及び第4シートの上端位置31en及び32enがずれることで、背側帯部材30の上端部の剛性が低くなり、使用者がおむつ1を着用する際の肌触りの不快感を軽減することができる。 Further, as shown in FIG. 3, the upper end position 31en of the third sheet 31 and the upper end position 32en of the fourth sheet 32 of the back side band member 30 of this embodiment match in the vertical direction; 31en and 32en may be shifted in the vertical direction. On the side of the back side band member 30 that is not folded back, the upper end positions 31en and 32en of each third sheet and fourth sheet are shifted, so that the rigidity of the upper end of the back side band member 30 is reduced, and the user wears the diaper 1. It is possible to reduce the discomfort caused by touching the skin.

また、一方の帯部材である腹側帯部材20は、折り返し部分21fに肌側から重なるように設けられた別のシート24(図2及び図3参照)をさらに有する。別のシート24は不織布等からなり、第1シート21よりも上下方向の長さが短く、吸収性本体10の長手方向の端部を覆っている。当該別のシート24が存在することで、腹側帯部材20の強度は高まり、おむつ1を引き上げる際に破損しにくくなる。 Further, the ventral band member 20, which is one of the band members, further includes another sheet 24 (see FIGS. 2 and 3) provided so as to overlap the folded portion 21f from the skin side. Another sheet 24 is made of a nonwoven fabric or the like, has a shorter vertical length than the first sheet 21, and covers the longitudinal ends of the absorbent body 10. The presence of the other sheet 24 increases the strength of the abdominal band member 20, making it less likely to be damaged when the diaper 1 is pulled up.

尚、第1シート21、第2シート22、第3シート31、及び、第4シート32は、熱可塑性樹脂繊維を有するものが好ましい。例えば、ポリプロピレン(PP)やポリエチレン(PE)等の熱可塑性樹脂の単独繊維や、PP及びPEの鞘芯構造等の複合繊維からなるものを例示できる。 Note that the first sheet 21, the second sheet 22, the third sheet 31, and the fourth sheet 32 preferably contain thermoplastic resin fibers. Examples include single fibers of thermoplastic resins such as polypropylene (PP) and polyethylene (PE), and composite fibers such as a sheath-core structure of PP and PE.

また、第1シート21の平均坪量は、第2シート22の平均坪量以上であり、第3シート31の平均坪量は、第4シート32の平均坪量以上であることが好ましい。ここでの平均坪量とは、各シート21、22,31,33の各々において、複数箇所(例えば10か所)の坪量(単位面積当たりの重量)をそれぞれ測定し、その結果の平均値を各シートの平均坪量とする。本実施形態では、第1シート21と第2シート22、及び、第3シート31と第4シート32の坪量の大小関係が確認できれば良いため、厳密な値を求める必要はなく、測定値に多少の誤差があっても許容される。 Further, it is preferable that the average basis weight of the first sheet 21 is equal to or greater than the average basis weight of the second sheet 22, and the average basis weight of the third sheet 31 is equal to or greater than the average basis weight of the fourth sheet 32. The average basis weight here refers to the average value of the results obtained by measuring the basis weight (weight per unit area) at multiple locations (for example, 10 locations) on each of the sheets 21, 22, 31, and 33. Let be the average basis weight of each sheet. In this embodiment, since it is sufficient to confirm the magnitude relationship between the basis weights of the first sheet 21 and the second sheet 22, and the third sheet 31 and the fourth sheet 32, there is no need to obtain exact values, and it is not necessary to use the measured values. Some errors are allowed.

平均坪量の高い第1シート21は非肌側部分21eを有しており、同様に、平均坪量の高い第3シート31は、第4シート32よりも非肌側に配置されるシートである。そのように非肌側に配置される部分を有する第1シート21や第3シート31の平均坪量が高いことで胴回り部2は強度を維持でき、おむつ1の引き上げ時に破れにくくなる。そして、肌側に配置されつつ、平均坪量が低い第2シート22及び第4シート32は、剛性が低くなることから肌触りが良好になる。さらに、平均坪量が低い第2シート22及び第4シート32は通気性や透湿性も高いことから、おむつ1内の湿気の排出を促し易くする。 The first sheet 21, which has a high average basis weight, has a non-skin side portion 21e, and similarly, the third sheet 31, which has a high average basis weight, is a sheet that is arranged on the non-skin side of the fourth sheet 32. The high average basis weight of the first sheet 21 and the third sheet 31, which have portions arranged on the non-skin side, allows the waist portion 2 to maintain its strength and makes it less likely to tear when the diaper 1 is pulled up. The second sheet 22 and the fourth sheet 32, which are arranged on the skin side but have a low average basis weight, have low rigidity and therefore a good feel against the skin. Furthermore, the second sheet 22 and the fourth sheet 32, which have a low average basis weight, are highly breathable and moisture permeable, which makes it easier to promote the discharge of moisture from within the diaper 1.

複数の弾性部材23、33は、第1シート21と第2シート22の間、及び、第3シート31と第4シート32との間において、上下方向に並んだ状態で配置されるとともに、左右方向に伸長した状態でホットメルト接着剤等の接着剤によって接合されている。そうして、腹側帯部材20、及び、背側帯部材30に、伸縮性が付与されている。なお、弾性部材23,33としては、糸状のゴムやスパンデックス等を例示できる。 The plurality of elastic members 23 and 33 are arranged in a vertically lined manner between the first sheet 21 and the second sheet 22 and between the third sheet 31 and the fourth sheet 32, and are arranged side by side in the left and right directions. It is bonded with an adhesive such as a hot melt adhesive while being stretched in the direction. Thus, the ventral band member 20 and the dorsal band member 30 are given elasticity. In addition, as the elastic members 23 and 33, thread-like rubber, spandex, etc. can be illustrated.

また、各弾性部材23、33に接着剤を塗布して接合させる際、腹側帯部材20及び背側帯部材30の各々において、おむつ1の製造時に各弾性部材に塗布する接着剤の量を調整する等により、最も下側に位置する弾性部材23n、33n(図2)に塗布された接着剤の平均坪量が、最も上側に位置する弾性部材23a、33a(図2)に塗布された接着剤の平均坪量よりも高くなることが望ましい。尚、弾性部材23n、33nは、左右方向の中央部において、腹側帯部材20及び背側帯部材30に切り込み等を入れることによって切断されているため、当該切断されている部分は、上述の接着剤を塗布された弾性部材23n、33nには含まれない。そして、腹側帯部材20及び背側帯部材30の各々において最も下側に位置する弾性部材23n、33nは、脚回り開口LHの少なくとも一部を形成しているため、最も下側に位置する弾性部材22n、33nに対する接着剤の平均坪量を高くすることで、弾性部材23n、33nは強固に接合される。それにより、着用者の脚が動いても当該弾性部材23n、33nは外れにくくなる。 Furthermore, when applying adhesive to each of the elastic members 23 and 33 to join them, the amount of adhesive applied to each of the elastic members in the ventral band member 20 and the dorsal band member 30 during manufacture of the diaper 1 is adjusted. etc., the average basis weight of the adhesive applied to the lowermost elastic members 23n, 33n (FIG. 2) is the same as the average basis weight of the adhesive applied to the uppermost elastic members 23a, 33a (FIG. 2). It is desirable that the average basis weight is higher than the average basis weight of In addition, since the elastic members 23n and 33n are cut by making a cut or the like in the ventral band member 20 and the dorsal band member 30 at the center portion in the left-right direction, the cut portions are coated with the above-mentioned adhesive. It is not included in the elastic members 23n and 33n coated with . In each of the ventral band member 20 and the dorsal band member 30, the lowermost elastic members 23n and 33n form at least a part of the leg opening LH, so the lowermost elastic members 23n and 33n form at least a part of the leg opening LH. By increasing the average basis weight of the adhesive for 22n and 33n, the elastic members 23n and 33n are firmly joined. This makes it difficult for the elastic members 23n, 33n to come off even if the wearer's legs move.

また、図3に示すように、折り返し部分21fを有する腹側帯部材20において、第2シート22の上端22enは、複数の弾性部材23のうちの最も上側に位置する弾性部材23aよりも下側に位置している。折り返し部分21fを有する腹側帯部材20の上端20enでは、第1シート21の非肌側部分21eと折り返し部分21fとの間に弾性部材23を接合することが可能であるため、このように腹側帯部材20の上端20enまで第2シート22が配置されていなくても構わない。尚、第2シート22は、上端22enが折り返し部分21fの下端よりも下側に位置するように設けられてもよい。これにより、第2シート22の資材量を削減でき、コスト削減に繋がる。 Further, as shown in FIG. 3, in the ventral band member 20 having the folded portion 21f, the upper end 22en of the second sheet 22 is located below the elastic member 23a located at the uppermost side of the plurality of elastic members 23. positioned. At the upper end 20en of the ventral band member 20 having the folded portion 21f, it is possible to join the elastic member 23 between the non-skin side portion 21e of the first sheet 21 and the folded portion 21f. The second sheet 22 may not be arranged up to the upper end 20en of the member 20. Note that the second sheet 22 may be provided such that the upper end 22en is located below the lower end of the folded portion 21f. Thereby, the amount of materials for the second sheet 22 can be reduced, leading to cost reduction.

また、本実施形態の第2シート22は、上述のように腹側帯部材20の上端20enまで配置されていないが、第2シート22の上端22enは、複数の弾性部材23のうちの最も上側に位置する弾性部材23aよりも上側に位置していてもよい。折り返し部分21fが設けられている腹側帯部材20において上端20enまで第2シート22が存在することで、腹側帯部材22の上端部の強度が向上し、おむつ1を引き上げる際に破損しにくくなる。 Further, the second sheet 22 of this embodiment is not arranged up to the upper end 20en of the ventral band member 20 as described above, but the upper end 22en of the second sheet 22 is located at the uppermost side of the plurality of elastic members 23. It may be located above the elastic member 23a. The presence of the second sheet 22 up to the upper end 20en in the ventral band member 20 provided with the folded portion 21f improves the strength of the upper end of the ventral band member 22, making it less likely to be damaged when the diaper 1 is pulled up.

図4は、図3の背側帯部材30側を拡大した概略拡大図である。図4に示すように、背側帯部材30においては、複数の弾性部材33のうちの最も上側に位置する弾性部材を第1弾性部材33aとし、第1弾性部材33aの下側に位置する弾性部材を第2弾性部材33bとすると、背側帯部材30の上端30enから第1弾性部材33aまでの距離L1は、第1弾性部材33aの下端から第2弾性部材33bの上端までの距離L2よりも長くなっている(L1>L2)。距離L1が、距離L2よりも短い場合、第1弾性部材33a及び第2弾性部材33bの左右方向の収縮の影響を受けやすく、上端30enが収縮し過ぎてしまう虞がある。距離L1を距離L2よりも長くすることで、第1弾性部材33a及び第2弾性部材33bの収縮の影響を受けにくくする。それにより、折り返し部分を有していない背側帯部材30の上端30enが綺麗に形成されやすくなる。 FIG. 4 is a schematic enlarged view of the dorsal band member 30 side of FIG. 3. As shown in FIG. 4, in the back side band member 30, the uppermost elastic member among the plurality of elastic members 33 is a first elastic member 33a, and the elastic member located below the first elastic member 33a is the second elastic member 33b, the distance L1 from the upper end 30en of the back side band member 30 to the first elastic member 33a is longer than the distance L2 from the lower end of the first elastic member 33a to the upper end of the second elastic member 33b. (L1>L2). If the distance L1 is shorter than the distance L2, the first elastic member 33a and the second elastic member 33b are susceptible to contraction in the left-right direction, and there is a risk that the upper end 30en will contract too much. By making the distance L1 longer than the distance L2, it is made less susceptible to the effects of contraction of the first elastic member 33a and the second elastic member 33b. Thereby, the upper end 30en of the back side band member 30 that does not have a folded portion can be easily formed neatly.

===第2実施形態===
図5は、第2実施形態に係るパンツ型使い捨ておむつ1の概略斜視図であり、図6は、図5のB-B線の概略断面図である。
Second Embodiment
FIG. 5 is a schematic perspective view of a pants-type disposable diaper 1 according to the second embodiment, and FIG. 6 is a schematic cross-sectional view taken along line BB of FIG.

第2実施形態では、図5に示すように、胴回り部2の一部に開孔40が設けられており、主にこの点で上述の第1実施形態と相違し、それ以外の点は概ね同様である。そのため、以下では、この相違点について主に説明し、同様の構成については、同じ符号を付して、その説明については省略する。 In the second embodiment, as shown in FIG. 5, an opening 40 is provided in a part of the waist portion 2, and the second embodiment differs from the above-described first embodiment mainly in this point, and other points are generally the same. The same is true. Therefore, in the following, this difference will be mainly explained, similar structures will be given the same reference numerals, and the explanation thereof will be omitted.

第2実施形態において、図5及び図6に示すように、腹側帯部材20(一方の帯部材)には、第1シート21の非肌側部分21eと第2シート22とを貫通するように設けられた複数の貫通孔40が設けられている。そして、第1シート21の折り返し部分21fは、その全域が、複数の貫通孔40(開孔40)が存在しない貫通孔非存在領域である。さらに、折り返し部分21fは、前後方向に見て、複数の貫通孔40と重なっている。また、腹側帯部材20において複数の貫通孔40が存在する領域には、左右方向に伸縮する複数の弾性部材23が上下方向に並んだ状態で、第1シート21と第2シート22の間に接着剤(不図示)によって接合されている。また、弾性部材23は、貫通孔40と重ならない位置に配置されている。このように、貫通孔40を設けることで腹側帯部材20の通気性を向上させつつ、折り返し部分21fによって、弾性部材23の接合に用いられた接着剤が貫通孔40から肌側に染み出る虞を防止する。その結果、おむつ1の通気性を向上させながら、接着剤の染み出しによる着用者への不快感を軽減することができる。 In the second embodiment, as shown in FIGS. 5 and 6, the ventral band member 20 (one band member) has a structure that extends through the non-skin side portion 21e of the first sheet 21 and the second sheet 22. A plurality of through holes 40 are provided. The entire folded portion 21f of the first sheet 21 is a through-hole non-existence region where a plurality of through-holes 40 (openings 40) are not present. Furthermore, the folded portion 21f overlaps with the plurality of through holes 40 when viewed in the front-rear direction. Further, in the area where the plurality of through holes 40 are present in the ventral band member 20, a plurality of elastic members 23 that expand and contract in the left-right direction are arranged in the vertical direction between the first sheet 21 and the second sheet 22. They are joined by an adhesive (not shown). Further, the elastic member 23 is arranged at a position that does not overlap the through hole 40. In this way, the provision of the through hole 40 improves the breathability of the ventral band member 20, while the folded portion 21f prevents the possibility that the adhesive used to join the elastic member 23 may seep out from the through hole 40 to the skin side. prevent. As a result, while improving the breathability of the diaper 1, discomfort to the wearer due to adhesive seepage can be reduced.

また、図6に示すように、吸収性本体10も複数の貫通孔40のうちの少なくとも一部と前後方向(厚さ方向)に見て重なる重なり領域10aを有している。そして、第1シート21の折り返し部分21fの肌側面21fhと、重なり領域10aの非肌側面10ahとが接着剤50により接合されている。このように折り返し部分21fが前後方向(厚さ方向)に見て貫通孔40と吸収性本体10との間に介在することにより、吸収性本体10と、折り返し部分21fを有する腹側帯部材20とが接合される際、接着剤50が貫通孔40を通って肌側から非肌側へ染み出すことを防止できる。よって、接着剤の染み出しを起因とする着用者の不快感を軽減することができる。 Further, as shown in FIG. 6, the absorbent main body 10 also has an overlapping region 10a that overlaps at least a portion of the plurality of through holes 40 when viewed in the front-back direction (thickness direction). Then, the skin side surface 21fh of the folded portion 21f of the first sheet 21 and the non-skin side surface 10ah of the overlapping region 10a are joined by an adhesive 50. By interposing the folded portion 21f between the through hole 40 and the absorbent main body 10 when viewed in the front-rear direction (thickness direction) in this way, the absorbent main body 10 and the ventral band member 20 having the folded portion 21f can be separated. When these are bonded together, it is possible to prevent the adhesive 50 from seeping out from the skin side to the non-skin side through the through hole 40. Therefore, the wearer's discomfort caused by the adhesive seeping out can be reduced.

<第1実施形態に係るおむつ1の製造方法>
図7は、第1実施形態に係るパンツ型使い捨ておむつ1の製造フローを示す概略図である。図7に示す製造フローは、主に、連続シート同士を貼り合わせる工程S201、接着剤を塗布する工程S202、折り返す工程S203、腹側及び背側帯状連続シートを形成する工程S204、及び吸収性本体10を接合する工程S205を有している。接合する工程S205のさらに下工程において、胴回り部2の左右方向の各端部20e、30eに相当する部分の接合や、搬送方向に製品単位で分断等を行うことにより、製品状態のおむつ1が形成される。
<Method for manufacturing diaper 1 according to first embodiment>
FIG. 7 is a schematic diagram showing a manufacturing flow of the pants-type disposable diaper 1 according to the first embodiment. The manufacturing flow shown in FIG. 7 mainly includes a step S201 of pasting continuous sheets together, a step S202 of applying an adhesive, a step S203 of folding back, a step S204 of forming ventral and dorsal strip-shaped continuous sheets, and an absorbent main body. The process includes step S205 of joining 10. In a step further below the joining step S205, the diaper 1 in the product state is joined by joining the portions corresponding to the left and right ends 20e and 30e of the waist portion 2, and dividing into product units in the transport direction. It is formed.

また、以下の説明では、非肌側連続シート21a及び肌側連続シート22aが搬送される搬送方向を「MD方向」とも言い、MD方向と交差する方向のことを「CD方向」と言う。また、MD方向は、製品状態(図1)のおむつ1の左右方向に相当する。この例では、CD方向は水平方向を向いている。また、CD方向は、非肌側連続シート21a及び肌側連続シート22aの幅方向と平行である。ちなみに、非肌側連続シート21a及び肌側連続シート22aの厚さ方向(図7では紙面を貫通する方向)と、搬送方向たるMD方向と、幅方向たるCD方向との三者は、互いに直交関係にある。 In the following description, the conveyance direction in which the non-skin side continuous sheet 21a and the skin side continuous sheet 22a are conveyed is also referred to as the "MD direction", and the direction intersecting the MD direction is referred to as the "CD direction". Further, the MD direction corresponds to the left-right direction of the diaper 1 in the product state (FIG. 1). In this example, the CD direction is oriented horizontally. Further, the CD direction is parallel to the width direction of the non-skin side continuous sheet 21a and the skin side continuous sheet 22a. Incidentally, the thickness direction of the non-skin side continuous sheet 21a and the skin side continuous sheet 22a (in FIG. 7, the direction penetrating the paper surface), the MD direction which is the conveyance direction, and the CD direction which is the width direction are orthogonal to each other. In a relationship.

先ず、連続シート同士を貼り合わせる工程S201において、適宜な搬送機構により、おむつ1の資材が所定の搬送方向(MD方向)に沿って所定の搬送速度で搬送され、各資材が所定位置に配置される。「おむつ1の資材」とは、腹側帯部材20及び背側帯部材30の非肌側シート(上述の第1シート21及び第3シート31に相当)が左右方向(搬送方向)に複数繋がった状態で連続してなる非肌側連続シート21aと、腹側帯部材20及び背側帯部材30の肌側シート(上述の第2シート22及び第4シート32に相当)が左右方向(搬送方向)に複数繋がった状態で連続してなる肌側連続シート22aと、弾性部材23,33が左右方向に複数繋がった状態で連続した弾性部材23’、33’とをいう。尚、肌側連続シート22aのCD方向の長さは、非肌側連続シート21aのCD方向の長さよりも短くなっている。図7に示すように、複数の弾性部材23’、33’が搬送方向に伸長した状態で搬送されて、非肌側連続シート21aの厚さ方向上から所定位置に配置される。そして、肌側連続シート22aが弾性部材23’、33’の上方から配置される。各弾性部材23’、33’には、ホットメルト等の接着剤が塗布されており、非肌側連続シート21a、各弾性部材23’、33’、及び肌側連続シート22aが互いに接着される。 First, in step S201 of pasting together continuous sheets, the materials of the diaper 1 are transported at a predetermined transport speed along a predetermined transport direction (MD direction) by an appropriate transport mechanism, and each material is placed at a predetermined position. Ru. "Materials for the diaper 1" refers to a state in which a plurality of non-skin side sheets (corresponding to the above-mentioned first sheet 21 and third sheet 31) of the ventral band member 20 and the dorsal band member 30 are connected in the left-right direction (conveyance direction). A plurality of non-skin-side continuous sheets 21a and skin-side sheets (corresponding to the above-mentioned second sheet 22 and fourth sheet 32) of the ventral band member 20 and the dorsal band member 30 are arranged in the left-right direction (conveyance direction). The skin-side continuous sheet 22a is continuous in a connected state, and the elastic members 23', 33' are continuous in a state in which a plurality of elastic members 23, 33 are connected in the left-right direction. Note that the length of the skin-side continuous sheet 22a in the CD direction is shorter than the length of the non-skin-side continuous sheet 21a in the CD direction. As shown in FIG. 7, the plurality of elastic members 23', 33' are conveyed in an extended state in the conveyance direction, and are placed at predetermined positions from above in the thickness direction of the non-skin side continuous sheet 21a. Then, the skin-side continuous sheet 22a is placed from above the elastic members 23', 33'. An adhesive such as hot melt is applied to each elastic member 23', 33', and the non-skin side continuous sheet 21a, each elastic member 23', 33', and the skin side continuous sheet 22a are adhered to each other. .

さらに、貼り合わせる工程S201では、非肌側連続シート21aのCD方向の一端21anと、肌側連続シート22aのCD方向の一端22anとを揃えるように、非肌側連続シート21aと肌側連続シート22aのCD方向の位置を調整する工程(S201’)が設けられている。当該工程では、CD方向の一端側(一端21an、一端22an側)のみに、非肌側連続シート21aの一端21an、及び、肌側連続シート22aの一端22anの位置を感知するセンサー(不図示)を設けることで、一端21anと一端22anの位置を感知し、非肌側及び肌側連続シート21a、22aの一端側のCD方向の位置が揃うように配置位置を調整する。一端21an及び22anは、製品状態のおむつ1の胴回り部2を形成する腹側及び背側帯部材のうちの一方の上端となる部分であり、調整する工程S201’によれば、当該上端となる端を揃えることとなり、上端の審美性を確保する。 Furthermore, in the bonding step S201, the non-skin side continuous sheet 21a and the skin side continuous sheet are aligned so that one end 21an of the non-skin side continuous sheet 21a in the CD direction and one end 22an of the skin side continuous sheet 22a in the CD direction are aligned. A step (S201') of adjusting the position of 22a in the CD direction is provided. In this step, a sensor (not shown) that detects the position of one end 21an of the non-skin side continuous sheet 21a and one end 22an of the skin side continuous sheet 22a is installed only on one end side (one end 21an, one end 22an side) in the CD direction. By providing these, the positions of the one end 21an and the one end 22an are sensed, and the arrangement positions are adjusted so that the positions of the one end sides of the non-skin side and skin side continuous sheets 21a and 22a are aligned in the CD direction. The one ends 21an and 22an are the upper ends of one of the ventral side and dorsal side band members that form the waist portion 2 of the diaper 1 in the product state, and according to the adjusting step S201', the ends that will be the upper ends. This ensures the aesthetics of the upper end.

そして、貼り合わせる工程S201では、上述のCD方向の一端側の位置を調整する工程S201’を有さない場合、或いは、調整する工程S201’を用いた場合であっても、各連続シート21a、22a間の配置に軽微なずれが生じる虞がある。それに対し、非肌側連続シート21a及び肌側連続シート22aの配置は次のように行われる。すなわち、CD方向における非肌側連続シート21aの一端21anと肌側連続シート22aの一端22anとの距離(本製造方法の例では、一端21anと一端22anが揃っているため、実質ゼロ)が、CD方向における非肌側連続シート21aの他端21asと肌側連続シート22aの他端22asとの距離(図7中のS1)よりも短くなるように、非肌側連続シート21aと肌側連続シート22aとを配置して貼り合わせる。 In the bonding step S201, each continuous sheet 21a, There is a possibility that a slight deviation may occur in the arrangement between the 22a. On the other hand, the non-skin side continuous sheet 21a and the skin side continuous sheet 22a are arranged as follows. That is, the distance between one end 21an of the non-skin side continuous sheet 21a and one end 22an of the skin side continuous sheet 22a in the CD direction (in the example of this manufacturing method, one end 21an and one end 22an are aligned, so it is substantially zero) is The non-skin side continuous sheet 21a and the skin side continuous sheet are arranged so that the distance between the other end 21as of the non-skin side continuous sheet 21a and the other end 22as of the skin side continuous sheet 22a in the CD direction is shorter than the distance (S1 in FIG. 7). The sheet 22a is arranged and pasted together.

貼り合わされた非肌側連続シート21aと肌側連続シート22aは、更に搬送方向に搬送され、次に、接着剤を塗布する工程S202において、肌側連続シート22aの肌側面(厚さ方向の上側面)の所定位置に接着剤45が塗布される。 The bonded non-skin side continuous sheet 21a and skin side continuous sheet 22a are further transported in the transport direction, and then in adhesive application step S202, adhesive 45 is applied to a predetermined position on the skin side (upper surface in the thickness direction) of the skin side continuous sheet 22a.

次の折り返す工程S203では、非肌側連続シート21aのCD方向の一端21anは折り返さないまま、非肌側連続シート21aのCD方向の他端21asを肌側面側(すなわち、製品状態のおむつ1の肌側となる側)に、且つ、接着剤45が塗布された領域に重なるように折り返す。尚、前述の第1シート21の折り返し部分21fとなる、搬送方向に連続してなる帯状折り返し部分21faには、貼り合わせ工程S201の際に弾性部材23’を配置していない。帯状折り返し部分21faに弾性部材23’が存在しないことで、帯状折り返し部分21faは収縮することなく肌側連続シート22a側に折り返され、折り返しによって形成された端部の収縮を防いで審美性を保持できる。 In the next folding step S203, one end 21an of the non-skin side continuous sheet 21a in the CD direction is not folded back, and the other end 21as of the non-skin side continuous sheet 21a in the CD direction is turned to the skin side side (that is, the end 21as of the non-skin side continuous sheet 21a in the CD direction). Fold it back so that it overlaps the area on which the adhesive 45 has been applied. Note that the elastic member 23' is not disposed in the band-shaped folded portion 21fa that is continuous in the conveyance direction and is the folded portion 21f of the first sheet 21 described above during the bonding step S201. Since the elastic member 23' is not present in the band-shaped folded part 21fa, the band-shaped folded part 21fa is folded back toward the skin-side continuous sheet 22a without shrinking, and the ends formed by the folding are prevented from shrinking and aesthetics are maintained. can.

次に、腹側及び背側帯状連続シートを形成する工程S204では、非肌側連続シート21a及び肌側連続シート22aを、非肌側連続シート21a及び肌側連続シート22aのCD方向の中央部において一緒に切断する。それにより、CD方向の一端側が背側帯状連続シート30aとなり、CD方向の他端側が腹側帯状連続シート20aとなり、腹側帯状連続シート20a及び背側帯状連続シート30aをそれぞれCD方向に所定距離だけ離間するように配置しつつ、搬送方向に搬送する。 Next, in step S204 of forming ventral side and dorsal band-shaped continuous sheets, the non-skin side continuous sheet 21a and the skin side continuous sheet 22a are separated from each other at the center in the CD direction of the non-skin side continuous sheet 21a and the skin side continuous sheet 22a. Cut together at. As a result, one end side in the CD direction becomes the dorsal side band-like continuous sheet 30a, the other end side in the CD direction becomes the ventral side band-like continuous sheet 20a, and the ventral side band-like continuous sheet 20a and the dorsal side band-like continuous sheet 30a are moved a predetermined distance in the CD direction. transport in the transport direction while arranging them so that they are spaced apart by the same amount.

次に、吸収性本体10を接合する工程S205では、吸収性本体10の前側上端部10eaと腹側帯状連続シート20aとを接着剤(図6の接着剤50)によって接合し、同様に、吸収性本体10の後側上端部10ebと背側帯状連続シート30aとを接着剤によって接合する。また、当該接合する工程S205では、腹側帯状連続シート20a及び背側帯状連続シート30aの切断された側の端20ah、30ahの一部を吸収性本体10が覆うように接合する。このように吸収性本体10と腹側帯状連続シート20a(背側帯状連続シート30a)とを接合することで、切断された側の端20ah、30ahがそのまま胴回り部2の下端(すなわち、脚回り開口部の一部)を構成することになり、当該下端において各腹側及び背側帯部材20,30の各シート(第1シート21と第2シート22,第3シート31と第4シート32)のずれが生じにくくなる。それにより、脚回り開口部LHの審美性を得ることができる。また、上述の切断後に、切断された側の端20ah、30ahが胴回り部2の上端にくるように向きを変える工程等を設けないことから、製造工程のコスト削減に繋がる。 Next, in step S205 of joining the absorbent main body 10, the front upper end 10ea of the absorbent main body 10 and the ventral side strip-shaped continuous sheet 20a are joined with an adhesive (the adhesive 50 in FIG. 6), and similarly, the absorbent main body 10 The rear upper end portion 10eb of the main body 10 and the back side strip-shaped continuous sheet 30a are bonded using an adhesive. In addition, in the joining step S205, the absorbent body 10 is joined so that the absorbent main body 10 partially covers the cut ends 20ah and 30ah of the ventral side band-like continuous sheet 20a and the back side band-like continuous sheet 30a. By joining the absorbent main body 10 and the ventral strip-shaped continuous sheet 20a (dorsal strip-shaped continuous sheet 30a), the cut ends 20ah, 30ah can be directly connected to the lower end of the waist portion 2 (i.e., the leg opening At the lower end, each sheet (first sheet 21 and second sheet 22, third sheet 31 and fourth sheet 32) of each ventral side and dorsal side band member 20, 30 Misalignment is less likely to occur. Thereby, aesthetics of the leg opening LH can be achieved. Further, after the above-mentioned cutting, there is no step of changing the orientation so that the cut ends 20ah, 30ah are at the upper end of the waist portion 2, which leads to cost reduction in the manufacturing process.

このような工程S201~S205を有する製造方法によれば、胴回り開口部BHの審美性とコスト削減の両立が可能なおむつ1を製造することができる。 According to the manufacturing method having such steps S201 to S205, it is possible to manufacture the diaper 1 that can achieve both aesthetics of the waist opening BH and cost reduction.

<第2実施形態に係るおむつ1の製造方法>
図8は、第2実施形態に係るパンツ型使い捨ておむつ1の工程S210及びS211を説明する断面模式図である。図9は、第2実施形態に係るおむつ1の製造フローを示す概略図である。第2実施形態の工程S202~S205は、基本的に第1実施形態の工程S202~S205と同様である。第2実施形態における貫通孔40(開孔40)を形成するために、貼り合わせる工程S201において開孔を形成する工程(S210,S211)が加わり、また、同工程での非肌側連続シート21a及び肌側連続シート22aの配置や搬送方法も異なっている。
<Method for manufacturing diaper 1 according to second embodiment>
FIG. 8 is a schematic cross-sectional view illustrating steps S210 and S211 of the pants-type disposable diaper 1 according to the second embodiment. FIG. 9 is a schematic diagram showing the manufacturing flow of the diaper 1 according to the second embodiment. Steps S202 to S205 of the second embodiment are basically the same as steps S202 to S205 of the first embodiment. In order to form the through holes 40 (openings 40) in the second embodiment, steps (S210, S211) of forming holes are added in the bonding step S201, and the non-skin side continuous sheet 21a in the same step is added. The arrangement and conveyance method of the skin-side continuous sheet 22a are also different.

図8に示すように、第2実施形態のおむつ1の製造方法での貼り合わせる工程S201には、上流側ロール51と、中間ロール52と、下流側ロール53と、一対の搬送ロール54とが設けられている。 As shown in FIG. 8, the lamination step S201 in the manufacturing method of the diaper 1 of the second embodiment includes an upstream roll 51, an intermediate roll 52, a downstream roll 53, and a pair of conveyor rolls 54.

中間ロール52の外周面には、貫通孔40を形成するための複数のピン55が設けられている。上流側ロール51及び下流側ロール53の外周面には、複数のピン55をそれぞれ受ける複数の凹部56が設けられている。複数のピン55は、加熱されたピン55でも、加熱されていないピン55でもよい。 A plurality of pins 55 for forming the through holes 40 are provided on the outer peripheral surface of the intermediate roll 52. A plurality of recesses 56 are provided on the outer peripheral surfaces of the upstream roll 51 and the downstream roll 53 to receive the plurality of pins 55, respectively. The plurality of pins 55 may be heated pins 55 or non-heated pins 55.

まず、非肌側連続シート21aは、上流側ロール51に巻き付けられながら、上流側ロール51の回転により搬送される。非肌側連続シート21aが中間ロール52に接近すると、中間ロール52の複数のピン55が非肌側連続シート21aに挿入され、非肌側連続シート21aを貫通する。そうして、非肌側連続シート21aに複数の非肌側開孔40が形成される(S210)。その後、非肌側連続シート21aは、上流側ロール51から中間ロール52に受け渡され、ピン55が貫通している状態で、中間ロール52の回転により搬送される。 First, the non-skin side continuous sheet 21a is wound around the upstream roll 51 and transported by the rotation of the upstream roll 51. When the non-skin side continuous sheet 21a approaches the intermediate roll 52, multiple pins 55 of the intermediate roll 52 are inserted into the non-skin side continuous sheet 21a and penetrate the non-skin side continuous sheet 21a. Thus, multiple non-skin side apertures 40 are formed in the non-skin side continuous sheet 21a (S210). The non-skin side continuous sheet 21a is then transferred from the upstream roll 51 to the intermediate roll 52, and transported by the rotation of the intermediate roll 52 with the pins 55 penetrating.

一方、肌側連続シート22aは、下流側ロール53に巻き付けられながら、下流側ロール53の回転により搬送される。また、中間ロール52と下流側ロール53が接近する位置に向かって、接着剤が塗布された伸長状態の連続した弾性部材23’、33’が投入される。なお、弾性部材23’、33’は、ピン55とピン55の間に通される。 On the other hand, the skin-side continuous sheet 22a is conveyed by the rotation of the downstream roll 53 while being wound around the downstream roll 53. Further, continuous elastic members 23', 33' coated with adhesive and in an elongated state are introduced toward a position where the intermediate roll 52 and the downstream roll 53 approach each other. Note that the elastic members 23', 33' are passed between the pins 55.

そして、中間ロール52と下流側ロール53が接近する位置において、肌側連続シート22aと非肌側連続シート21aは、間に弾性部材23’、33’を介在させつつ、中間ロール52の外周面(ピン55以外の面)と下流側ロール53の外周面(凹部56以外の面)に挟み込まれる。そうして、肌側連続シート22aと非肌側連続シート21aは、弾性部材23’、33’に塗布されている接着剤により接合される。 Then, at a position where the intermediate roll 52 and the downstream roll 53 approach each other, the skin side continuous sheet 22a and the non-skin side continuous sheet 21a are sandwiched between the outer peripheral surface of the intermediate roll 52 (surface other than the pin 55) and the outer peripheral surface of the downstream roll 53 (surface other than the recess 56), with the elastic members 23', 33' interposed between them. The skin side continuous sheet 22a and the non-skin side continuous sheet 21a are then bonded together by the adhesive applied to the elastic members 23', 33'.

それと共に、非肌側連続シート21aに貫通している状態の複数のピン55は、肌側連続シート22aに向かって挿入され、肌側連続シート22aを貫通する。そうして、肌側連続シート22aに複数の肌側開孔40(貫通孔40)が形成される。 At the same time, the plurality of pins 55 penetrating the non-skin side continuous sheet 21a are inserted toward the skin side continuous sheet 22a and penetrate the skin side continuous sheet 22a. In this way, a plurality of skin-side openings 40 (through-holes 40) are formed in the skin-side continuous sheet 22a.

その後、中間ロール52の回転により、ピン55が肌側連続シート22aから非肌側連続シート21aに向かって引き抜かれる。こうして、貫通孔40(開孔40)を有する非肌側連続シート21a及び肌側連続シート22aが形成される。非肌側連続シート21a及び肌側連続シート22aは、一対の搬送ローラー54により下流の工程S202へ搬送される。 Thereafter, as the intermediate roll 52 rotates, the pin 55 is pulled out from the skin-side continuous sheet 22a toward the non-skin-side continuous sheet 21a. In this way, the non-skin side continuous sheet 21a and the skin side continuous sheet 22a having the through holes 40 (openings 40) are formed. The non-skin side continuous sheet 21a and the skin side continuous sheet 22a are conveyed to the downstream process S202 by a pair of conveyance rollers 54.

開孔を形成する工程S210、S211によれば、非肌側連続シート21aと肌側連続シート22aとの貼り合わせる工程S201時に同時に貫通孔40を形成することができ、製造工程のコスト削減を図れる。 According to the steps S210 and S211 of forming the openings, the through holes 40 can be formed at the same time in the step S201 of bonding the non-skin side continuous sheet 21a and the skin side continuous sheet 22a, and the cost of the manufacturing process can be reduced. .

また、図9に示すように、第2実施形態のおむつ1を製造する方法における接着剤を塗布する工程S202では、肌側連続シート22aの肌側面(厚さ方向の上側面)の肌側開孔40が存在しない領域に接着剤45を塗布する。そして、折り返す工程S203では、接着剤45が塗布された領域に非肌側連続シート21aが重なるように、且つ、非肌側連続シート21aが肌側開孔40を肌側から(厚さ方向の上から)覆うように、非肌側連続シート21aの他端21asを折り返す。接着剤45に重なるように非肌側連続シート21aを折り返すことで肌側(開孔40から帯状折り返し部分21fa側)への接着剤45の染み出しを防止する。接着剤45を染み出しにくくすることで、染み出しによる着用者への不快感を軽減するおむつ1を製造できる。 Further, as shown in FIG. 9, in step S202 of applying an adhesive in the method for manufacturing the diaper 1 of the second embodiment, the skin side opening of the skin side surface (upper side surface in the thickness direction) of the skin side continuous sheet 22a is performed. Adhesive 45 is applied to areas where holes 40 are not present. Then, in the folding step S203, the non-skin side continuous sheet 21a overlaps the area where the adhesive 45 is applied, and the non-skin side continuous sheet 21a opens the skin side opening 40 from the skin side (in the thickness direction). Fold back the other end 21as of the non-skin side continuous sheet 21a so as to cover it (from above). By folding back the non-skin side continuous sheet 21a so as to overlap the adhesive 45, the adhesive 45 is prevented from seeping out to the skin side (from the opening 40 to the band-shaped folded portion 21fa side). By making it difficult for the adhesive 45 to seep out, it is possible to manufacture a diaper 1 that reduces discomfort to the wearer due to seepage.

===その他の実施の形態===
以上、本発明の実施形態について説明したが、上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。また、本発明は、その趣旨を逸脱することなく、変更や改良され得るとともに、本発明にはその等価物が含まれるのはいうまでもない。
===Other embodiments===
Although the embodiment of the present invention has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. Furthermore, the present invention may be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof.

上述の第2実施形態では、第1シート21の非肌側部分21eと第2シート22とを貫通するように貫通孔40を設けていたが、非肌側に設けられる第1シート21及び第3シート31、或いは、肌側に設けられる第2シート22及び第4シート32の少なくともいずれか一方において、複数の開孔40が設けられていてもよい。複数の開孔40が存在することで通気性が向上し、そのような開孔40が肌側に設けられる場合は、汗等の水分を非肌側に移行させやすくなり、非肌側に設けられる場合は、汗等の水分の蒸散を促し易くする。 In the second embodiment described above, a through hole 40 is provided so as to penetrate the non-skin side portion 21e of the first sheet 21 and the second sheet 22, but multiple openings 40 may be provided in at least one of the first sheet 21 and the third sheet 31 provided on the non-skin side, or the second sheet 22 and the fourth sheet 32 provided on the skin side. The presence of multiple openings 40 improves breathability, and when such openings 40 are provided on the skin side, they facilitate the transfer of moisture such as sweat to the non-skin side, and when provided on the non-skin side, they facilitate the evaporation of moisture such as sweat.

上述の第2実施形態では、開孔40の形状は円形状であったが、図示する円形状に限定されず、楕円形や、その他の種々の形状であってよい。 In the second embodiment described above, the shape of the opening 40 was circular, but it is not limited to the circular shape shown in the figure and may be an ellipse or any other shape.

1 おむつ(吸収性物品)、2 胴回り部、10 吸収性本体、
10a 重なり領域、10ah 非肌側面、10ea 前側上端部、
10eb 後側上端部、11 吸収体、20 腹側帯部材、
20a 腹側帯状連続シート、20ah 端、20e 端部、
20en 上端、21 第1シート、21a 非肌側連続シート、
21an 一端、21as 他端、21e 非肌側部分、21f 折り返し部分、
21fa 帯状折り返し部分、21fh 肌側面、22 第2シート、
22a 肌側連続シート、22an 一端、22as 他端、22en 上端、
23 弾性部材、23’ 弾性部材、23a 弾性部材、23n 弾性部材、
24 別のシート、30 背側帯部材、30a 背側帯状連続シート、
30ah 端、30e 端部、30en 上端、
31 第3シート、31en 上端位置、
32 第4シート、32en 上端位置、
33 弾性部材、33’ 弾性部材、33a 弾性部材(第1弾性部材)、
33b 弾性部材(第2弾性部材)、33n 弾性部材、
40 開孔(貫通孔、非肌側開孔、肌側開孔)、45 接着剤、50 接着剤、
51 上流側ロール、52 中間ロール、53 下流側ロール、54 搬送ローラー、
55 ピン、56 凹部、
BH 胴回り開口、C10 中央位置(所定位置)、
L1 距離、L2 距離、 LH 脚回り開口、S1 距離
1 diaper (absorbent article), 2 waist portion, 10 absorbent main body,
10a overlapping area, 10ah non-skin side, 10ea front upper end,
10eb rear upper end, 11 absorber, 20 ventral band member,
20a ventral band-shaped continuous sheet, 20ah end, 20e end,
20en upper end, 21 first sheet, 21a non-skin side continuous sheet,
21an one end, 21as other end, 21e non-skin side part, 21f folded part,
21fa band-shaped folded part, 21fh skin side, 22 second sheet,
22a skin side continuous sheet, 22an one end, 22as other end, 22en upper end,
23 elastic member, 23' elastic member, 23a elastic member, 23n elastic member,
24 another sheet, 30 dorsal band member, 30a dorsal band-shaped continuous sheet,
30ah end, 30e end, 30en top end,
31 3rd sheet, 31en upper end position,
32 4th sheet, 32en upper end position,
33 elastic member, 33' elastic member, 33a elastic member (first elastic member),
33b elastic member (second elastic member), 33n elastic member,
40 Opening (through hole, non-skin side opening, skin side opening), 45 Adhesive, 50 Adhesive,
51 upstream roll, 52 intermediate roll, 53 downstream roll, 54 conveyance roller,
55 pin, 56 recess,
BH Waist opening, C10 Center position (predetermined position),
L1 distance, L2 distance, LH leg opening, S1 distance

Claims (14)

互いに交差する上下方向と左右方向と前後方向とを有し、
液体を吸収する吸収性本体と、
前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、
前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材と、を有し、
前記腹側帯部材及び前記背側帯部材のうちの一方の帯部材は、第1シートと、前記第1シートとは別体の第2シートとを有し、
前記腹側帯部材及び前記背側帯部材のうちの他方の帯部材は、第3シートと、前記第3シートとは別体の第4シートとを有し、
前記第1シート、前記第2シート、前記第3シート、及び前記第4シートは、前記腹側帯部材及び前記背側帯部材の前記左右方向の両端部において接合されている吸収性物品であって、
前記腹側帯部材及び前記背側帯部材を伸長させた伸長状態において、
前記第1シートは、前記第2シートよりも非肌側に配置される非肌側部分と、前記一方の部材の上端で肌側に折り返された折り返し部分とを有し、
前記第3シートは、前記第4シートよりも非肌側に配置され、折り返されておらず、
前記一方の帯部材において、前記第2シートの上端は、複数の弾性部材のうちの最も上側に位置する弾性部材よりも下側に位置しており、
前記第1シートの前記非肌側部分と前記折り返し部分との間に、前記最も上側に位置する弾性部材が設けられており、前記最も上側に位置する弾性部材は、前記第1シートの前記非肌側部分の肌側面、及び前記折り返し部分の非肌側面に接着剤によって接合されていることを特徴とする吸収性物品。
The vertical direction, the horizontal direction, and the front-rear direction intersect with each other,
An absorbent body that absorbs liquid;
An abdominal belt member provided along the left-right direction and joined to a front upper end portion of the absorbent main body;
a back-side belt member provided along the left-right direction and joined to a rear upper end portion of the absorbent main body,
One of the abdominal belt member and the dorsal belt member has a first sheet and a second sheet separate from the first sheet,
The other of the abdominal belt member and the dorsal belt member has a third sheet and a fourth sheet separate from the third sheet,
The first sheet, the second sheet, the third sheet, and the fourth sheet are joined at both ends in the left-right direction of the abdominal-side belt member and the back-side belt member,
In a stretched state in which the abdominal belt member and the dorsal belt member are stretched,
the first sheet has a non-skin side portion disposed on the non-skin side of the second sheet, and a folded-back portion folded back to the skin side at an upper end of the one of the members,
the third sheet is disposed closer to the skin than the fourth sheet and is not folded back;
In the one belt member, an upper end of the second sheet is located below an uppermost elastic member among the plurality of elastic members,
An absorbent article characterized in that the uppermost elastic member is provided between the non-skin side portion of the first sheet and the folded-back portion, and the uppermost elastic member is joined to the skin side of the non-skin side portion of the first sheet and the non-skin side of the folded-back portion with an adhesive.
請求項1に記載の吸収性物品であって、
前記第3シートの上端位置と前記第4シートの上端位置とは、前記上下方向にずれている
ことを特徴とする吸収性物品。
The absorbent article according to claim 1,
The absorbent article, wherein the upper end position of the third sheet and the upper end position of the fourth sheet are shifted in the vertical direction.
請求項1又は請求項2に記載の吸収性物品であって、
前記一方の帯部材は、前記折り返し部分に肌側から重なるように設けられた別のシートをさらに有する
ことを特徴とする吸収性物品。
The absorbent article according to claim 1 or 2,
An absorbent article, characterized in that one of the belt members further has another sheet provided so as to overlap the folded-back portion from the skin side.
請求項1から請求項3のいずれか1項に記載の吸収性物品であって、
前記第1シートの平均坪量は、前記第2シートの平均坪量以上であり、
前記第3シートの平均坪量は、前記第4シートの平均坪量以上である
ことを特徴とする吸収性物品。
The absorbent article according to any one of claims 1 to 3,
The average basis weight of the first sheet is greater than or equal to the average basis weight of the second sheet,
An absorbent article characterized in that the average basis weight of the third sheet is greater than or equal to the average basis weight of the fourth sheet.
請求項1から請求項4のいずれか1項に記載の吸収性物品であって、
前記第1シート及び前記第3シート、或いは、前記第2シート及び前記第4シートの少なくともいずれか一方において、複数の開孔が設けられている
ことを特徴とする吸収性物品。
The absorbent article according to any one of claims 1 to 4,
An absorbent article characterized in that a plurality of holes are provided in at least one of the first sheet and the third sheet, or the second sheet and the fourth sheet.
互いに交差する上下方向と左右方向と前後方向とを有し、
液体を吸収する吸収性本体と、
前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、
前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材と、を有し、
前記腹側帯部材及び前記背側帯部材のうちの一方の帯部材は、第1シートと第2シートとを有し、
前記腹側帯部材及び前記背側帯部材のうちの他方の帯部材は、第3シートと第4シートとを有し、
前記第1シート、前記第2シート、前記第3シート、及び前記第4シートは、前記腹側帯部材及び前記背側帯部材の前記左右方向の両端部において接合されている吸収性物品であって、
前記腹側帯部材及び前記背側帯部材を伸長させた伸長状態において、
前記第1シートは、前記第2シートよりも非肌側に配置される非肌側部分と、前記一方の部材の上端で肌側に折り返された折り返し部分とを有し、
前記第3シートは、前記第4シートよりも非肌側に配置され、折り返されておらず、
前記一方の帯部材は、前記第1シートの前記非肌側部分と前記第2シートとを貫通するように設けられた複数の貫通孔を有し、
前記折り返し部分は、前記複数の貫通孔が存在しない貫通孔非存在領域であり、
前記折り返し部分は、前記前後方向に見て、前記複数の貫通孔と重なっており、
前記第1シートと前記第2シートの間に、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されている、
ことを特徴とする吸収性物品。
It has a vertical direction, a horizontal direction, and a front-back direction that intersect with each other,
an absorbent body that absorbs liquid;
a ventral band member provided along the left-right direction and joined to the front upper end of the absorbent main body;
a backside band member provided along the left-right direction and joined to the rear upper end of the absorbent main body;
One of the ventral band members and the dorsal band member has a first sheet and a second sheet,
The other of the ventral band member and the dorsal band member has a third sheet and a fourth sheet,
The first sheet, the second sheet, the third sheet, and the fourth sheet are an absorbent article joined at both ends of the ventral band member and the dorsal band member in the left-right direction,
In an extended state in which the ventral band member and the dorsal band member are extended,
The first sheet has a non-skin side portion disposed on the non-skin side of the second sheet, and a folded portion folded back toward the skin side at the upper end of the one member,
The third sheet is arranged on a non-skin side than the fourth sheet and is not folded back,
The one band member has a plurality of through holes provided to penetrate the non-skin side portion of the first sheet and the second sheet,
The folded portion is a through-hole non-existence region where the plurality of through-holes do not exist,
The folded portion overlaps the plurality of through holes when viewed in the front-rear direction,
Between the first sheet and the second sheet, a plurality of elastic members that expand and contract in the left-right direction are arranged in the vertical direction and joined by an adhesive;
An absorbent article characterized by:
請求項6に記載の吸収性物品であって、
前記吸収性本体は、前記複数の貫通孔のうちの少なくとも一部と前記前後方向に見て重なる重なり領域を有し、
前記折り返し部分の肌側面の一部と前記重なり領域の非肌側面とが接着剤により接合されている
ことを特徴とする吸収性物品。
The absorbent article according to claim 6,
The absorbent main body has an overlapping region that overlaps at least a portion of the plurality of through holes when viewed in the front-back direction,
An absorbent article characterized in that a part of the skin side surface of the folded portion and the non-skin side surface of the overlapping region are joined with an adhesive.
請求項1から請求項7のいずれか1項に記載の吸収性物品であって、
前記第1シートと前記第2シートとの間には、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されており、
前記第3シートと前記第4シートとの間には、前記左右方向に伸縮する複数の弾性部材が前記上下方向に並んだ状態で接着剤によって接合されており、
前記腹側帯部材及び前記背側帯部材の各々において、最も下側に位置する弾性部材に塗布された接着剤の平均坪量は、最も上側に位置する弾性部材に塗布された接着剤の平均坪量よりも高い
ことを特徴とする吸収性物品。
The absorbent article according to any one of claims 1 to 7,
Between the first sheet and the second sheet, a plurality of elastic members that expand and contract in the left-right direction are joined with an adhesive in a state that they are lined up in the vertical direction,
Between the third sheet and the fourth sheet, a plurality of elastic members that expand and contract in the left-right direction are joined with an adhesive in a state that they are lined up in the vertical direction,
In each of the ventral band member and the dorsal band member, the average basis weight of the adhesive applied to the lowermost elastic member is the average basis weight of the adhesive applied to the uppermost elastic member. An absorbent article characterized in that it is higher than.
請求項8に記載の吸収性物品であって、
前記他方の帯部材において、前記複数の弾性部材のうちの最も上側に位置する弾性部材を第1弾性部材とし、前記第1弾性部材の下側に位置する弾性部材を第2弾性部材とすると、
前記他方の帯部材の上端から前記第1弾性部材までの距離は、前記第1弾性部材の下端から前記第2弾性部材の上端までの距離よりも長い
ことを特徴とする吸収性物品。
9. The absorbent article according to claim 8,
In the other belt member, the uppermost elastic member among the plurality of elastic members is defined as a first elastic member, and the elastic member below the first elastic member is defined as a second elastic member.
An absorbent article, characterized in that the distance from the upper end of the other belt member to the first elastic member is longer than the distance from the lower end of the first elastic member to the upper end of the second elastic member.
請求項1から請求項9のいずれか1項に記載の吸収性物品であって、
前記前後方向において、前記折り返し部分は、前記第2シートよりも肌側に位置することを特徴とする吸収性物品。
The absorbent article according to any one of claims 1 to 9,
An absorbent article, characterized in that, in the front-to-rear direction, the folded-back portion is located closer to the skin than the second sheet.
互いに交差する上下方向と左右方向と前後方向とを有し、液体を吸収する吸収性本体と、前記左右方向に沿って設けられ、前記吸収性本体の前側上端部に接合された腹側帯部材と、前記腹側帯部材とは別部材として前記左右方向に沿って設けられ、前記吸収性本体の後側上端部に接合された背側帯部材とを有する吸収性物品の製造方法であって、
前記腹側帯部材及び前記背側帯部材の非肌側シートとなる、搬送方向に連続した非肌側連続シートと、前記腹側帯部材及び前記背側帯部材の肌側シートとなり、且つ、前記搬送方向と交差するCD方向の長さが前記非肌側連続シートの前記CD方向の長さより短い、前記搬送方向に連続した肌側連続シートとを、前記CD方向における前記非肌側連続シートの一端と前記肌側連続シートの一端との距離が、前記CD方向における前記非肌側連続シートの他端と前記肌側連続シートの他端との距離よりも短くなるように、前記非肌側連続シートと前記肌側連続シートとを貼り合わせる工程と、
前記非肌側連続シートの前記CD方向の前記一端を折り返さないまま、前記非肌側連続シートの前記CD方向の前記他端を前記吸収性物品の肌側となる側に折り返す工程と、
貼り合わされた前記非肌側連続シート及び前記肌側連続シートを、前記非肌側連続シート及び前記肌側連続シートの前記CD方向の中央部において一緒に切断し、腹側帯状連続シート及び背側帯状連続シートを形成する工程と、
前記吸収性本体の前側上端部と前記腹側帯状連続シートとを接合し、前記吸収性本体の後側上端部と前記背側帯状連続シートとを接合する工程と
を有し、
前記貼り合わせる工程において、
前記非肌側連続シートにピンを貫通させて、前記非肌側連続シートに非肌側開孔を形成する工程と、
前記非肌側連続シートに貫通している状態の前記ピンを、前記肌側連続シートに貫通させて、前記肌側連続シートに肌側開孔を形成する工程と
を有し、
前記折り返す工程では、前記非肌側連続シートが前記肌側開孔を肌側から覆うように前記非肌側連続シートの前記他端を折り返すことを特徴とする吸収性物品の製造方法。
an absorbent body that absorbs liquid and has a vertical direction, a left-right direction, and a front-back direction that intersect with each other; and a ventral band member that is provided along the left-right direction and joined to the front upper end of the absorbent body. , a method for manufacturing an absorbent article having a dorsal band member provided along the left-right direction as a separate member from the ventral band member and joined to the rear upper end of the absorbent main body,
A non-skin side continuous sheet that is continuous in the conveyance direction and is a non-skin side sheet of the ventral side band member and the dorsal side band member, and a non-skin side continuous sheet that is the skin side sheet of the ventral side band member and the dorsal side band member, and that is continuous in the conveyance direction. A skin-side continuous sheet that is continuous in the transport direction and whose intersecting length in the CD direction is shorter than the length of the non-skin-side continuous sheet in the CD direction is connected to one end of the non-skin-side continuous sheet in the CD direction and the skin-side continuous sheet in the CD direction. The non-skin side continuous sheet is arranged such that the distance from one end of the skin side continuous sheet is shorter than the distance between the other end of the non-skin side continuous sheet and the other end of the skin side continuous sheet in the CD direction. a step of laminating the skin-side continuous sheet;
a step of folding back the other end of the non-skin side continuous sheet in the CD direction to the skin side of the absorbent article without folding back the one end of the non-skin side continuous sheet in the CD direction;
The bonded non-skin side continuous sheet and the skin side continuous sheet are cut together at the center of the CD direction of the non-skin side continuous sheet and the skin side continuous sheet, and the ventral band-like continuous sheet and the dorsal side continuous sheet are cut. forming a continuous band-like sheet;
joining the front upper end of the absorbent main body and the ventral belt-like continuous sheet, and joining the rear upper end of the absorbent main body and the dorsal belt-like continuous sheet,
In the pasting step,
forming a non-skin side opening in the non-skin side continuous sheet by passing a pin through the non-skin side continuous sheet;
forming a skin-side opening in the skin-side continuous sheet by causing the pin that has penetrated the non-skin-side continuous sheet to penetrate the skin-side continuous sheet,
In the folding step, the other end of the non-skin side continuous sheet is folded back so that the non-skin side continuous sheet covers the skin side openings from the skin side.
請求項11に記載の吸収性物品の製造方法であって、
前記非肌側連続シートの前記CD方向の前記一端と、前記肌側連続シートの前記CD方向の前記一端とを揃えるように、前記非肌側連続シート又は前記肌側連続シートの前記CD方向の位置を調整する工程
を有することを特徴とする吸収性物品の製造方法。
A method for manufacturing an absorbent article according to claim 11, comprising:
The CD direction of the non-skin side continuous sheet or the skin side continuous sheet is aligned so that the one end of the non-skin side continuous sheet in the CD direction and the one end of the skin side continuous sheet in the CD direction are aligned. 1. A method for manufacturing an absorbent article, comprising the step of adjusting position.
請求項11又は請求項12に記載の吸収性物品の製造方法であって、
前記接合する工程では、前記腹側帯状連続シート及び前記背側帯状連続シートの切断された側の端の一部を前記吸収性本体が覆うように接合する
ことを特徴とする吸収性物品の製造方法。
A method for manufacturing an absorbent article according to claim 11 or 12, comprising:
In the step of joining, the absorbent article is manufactured such that the absorptive main body covers a part of the cut side ends of the ventral side strip-like continuous sheet and the dorsal side strip-like continuous sheet. Method.
請求項13に記載の吸収性物品の製造方法であって、
前記折り返す工程の前に、前記肌側連続シートの肌側面の前記肌側開孔が存在しない領域に接着剤を塗布する工程を有し、
前記折り返す工程では、前記接着剤が塗布された領域に前記非肌側連続シートが重なるように、前記非肌側連続シートの前記他端を折り返す
ことを特徴とする吸収性物品の製造方法。
A method for manufacturing an absorbent article according to claim 13, comprising the steps of:
a step of applying an adhesive to an area of the skin side continuous sheet where no skin side apertures are present, before the step of folding back;
The method for manufacturing an absorbent article, wherein in the folding back step, the other end of the non-skin side continuous sheet is folded back so that the non-skin side continuous sheet overlaps the area where the adhesive is applied.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003077812A1 (en) 2002-03-20 2003-09-25 Zuiko Corporation Disposable wearing article
JP2009061045A (en) 2007-09-05 2009-03-26 Uni Charm Corp Method of manufacturing disposable diaper
JP2013172893A (en) 2012-02-27 2013-09-05 Oji Nepia Co Ltd Disposable diaper and method for manufacturing disposable diaper
JP2013183828A (en) 2012-03-06 2013-09-19 Oji Holdings Corp Disposable diaper and method of manufacturing disposable diaper
JP2015058034A (en) 2013-09-17 2015-03-30 白十字株式会社 Disposable absorbent article
JP2015186563A (en) 2014-03-13 2015-10-29 大王製紙株式会社 Method for manufacturing underpants type disposable diaper and underpants type disposable diaper which can be manufactured by the same
JP2016000116A5 (en) 2014-06-12 2017-04-20
WO2018042556A1 (en) 2016-08-31 2018-03-08 ユニ・チャーム株式会社 Method and device for producing sheet-like member for absorbent article
WO2018153106A1 (en) 2017-02-27 2018-08-30 The Procter & Gamble Company Absorbent article having elastic belt
WO2018167836A1 (en) 2017-03-14 2018-09-20 ユニ・チャーム株式会社 Production method and production device for sheet member used in absorbent articles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6274977B2 (en) 2014-06-12 2018-02-07 ユニ・チャーム株式会社 Disposable wearing items
JP6007442B1 (en) * 2015-06-30 2016-10-12 ユニ・チャーム株式会社 Absorbent article manufacturing method and manufacturing apparatus
JP6116657B1 (en) * 2015-12-25 2017-04-19 ユニ・チャーム株式会社 Pants-type disposable diaper
WO2017175290A1 (en) * 2016-04-05 2017-10-12 ユニ・チャーム株式会社 Method for manufacturing absorbent article
JP6709842B2 (en) * 2016-04-05 2020-06-17 ユニ・チャーム株式会社 Absorbent article
WO2017175288A1 (en) * 2016-04-05 2017-10-12 ユニ・チャーム株式会社 Absorbent article

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003077812A1 (en) 2002-03-20 2003-09-25 Zuiko Corporation Disposable wearing article
JP2009061045A (en) 2007-09-05 2009-03-26 Uni Charm Corp Method of manufacturing disposable diaper
JP2013172893A (en) 2012-02-27 2013-09-05 Oji Nepia Co Ltd Disposable diaper and method for manufacturing disposable diaper
JP2013183828A (en) 2012-03-06 2013-09-19 Oji Holdings Corp Disposable diaper and method of manufacturing disposable diaper
JP2015058034A (en) 2013-09-17 2015-03-30 白十字株式会社 Disposable absorbent article
JP2015186563A (en) 2014-03-13 2015-10-29 大王製紙株式会社 Method for manufacturing underpants type disposable diaper and underpants type disposable diaper which can be manufactured by the same
JP2016000116A5 (en) 2014-06-12 2017-04-20
WO2018042556A1 (en) 2016-08-31 2018-03-08 ユニ・チャーム株式会社 Method and device for producing sheet-like member for absorbent article
WO2018153106A1 (en) 2017-02-27 2018-08-30 The Procter & Gamble Company Absorbent article having elastic belt
WO2018167836A1 (en) 2017-03-14 2018-09-20 ユニ・チャーム株式会社 Production method and production device for sheet member used in absorbent articles

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