WO2019093507A1 - Disposable diaper - Google Patents

Disposable diaper Download PDF

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Publication number
WO2019093507A1
WO2019093507A1 PCT/JP2018/041783 JP2018041783W WO2019093507A1 WO 2019093507 A1 WO2019093507 A1 WO 2019093507A1 JP 2018041783 W JP2018041783 W JP 2018041783W WO 2019093507 A1 WO2019093507 A1 WO 2019093507A1
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WO
WIPO (PCT)
Prior art keywords
sheet
water
absorbent
region
disposable diaper
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Application number
PCT/JP2018/041783
Other languages
French (fr)
Japanese (ja)
Inventor
竜吾 大橋
怜未 米田
Original Assignee
ユニ・チャーム株式会社
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Priority to KR1020207016162A priority Critical patent/KR102599553B1/en
Priority to JP2019552419A priority patent/JP7101189B2/en
Publication of WO2019093507A1 publication Critical patent/WO2019093507A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent 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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F13/51394—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability creating a visual effect, e.g. having a printed or coloured topsheet, printed or coloured sub-layer but being visible from the topsheet, other than embossing for purposes of bonding, wicking, acquisition, leakage-prevention
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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 absorbing medium

Landscapes

  • 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)

Abstract

Provided is a disposable diaper with which a user can easily obtain both reassurance for leakage and reassurance for absorbency. A disposable diaper (10) comprises: a water-absorbable sheet (70) which is disposed in a diaper front-body section and/or a diaper rear-body section; and a liquid-impermeable back sheet (50) which is disposed so as to be closer to a non-skin facing side than the water-absorbable sheet. The water-absorbable sheet is colored. The back sheet (50) at least partially overlaps with the water-absorbable sheet 70, in a plan view in the thickness direction. The water-absorbable sheet (70) has a longitudinal extension portion (77) extended more to the outer side, in the longitudinal direction, than the longitudinally outer end edge of the back sheet (50).

Description

使い捨ておむつDisposable diapers
　本発明は、吸水シートを有する使い捨ておむつに関する。 The present invention relates to a disposable diaper having a water absorbing sheet.
　吸収コアを有する使い捨ておむつであって、吸収コアとは別の吸水シートを有する使い捨ておむつが知られている。吸水シートは、胴回り域において着用者の肌に触れる肌対向面側に配置されている。よって、吸水シートは、パンツ型の状態において使い捨ておむつの内側に配置されている。また、吸水シートの非肌対向面側には、液不透過性のバックシートが配置されている。バックシートは、吸水シートによって吸収した体液の漏れを抑制するために、吸水シートに重なって配置されている。 A disposable diaper having an absorbent core, which has a water-absorbent sheet different from the absorbent core, is known. The water absorbing sheet is disposed on the side facing the skin in contact with the wearer's skin in the waist area. Thus, the water-absorbent sheet is disposed inside the disposable diaper in a pant-type state. Moreover, the liquid-impermeable back sheet is arrange | positioned at the non-skin opposing surface side of a water absorption sheet. The back sheet is disposed so as to overlap the water absorbing sheet in order to suppress the leakage of the body fluid absorbed by the water absorbing sheet.
特開２００９－１４８５３１号JP 2009-148531
　特許文献１の吸水シートは、パンツ型の状態において使い捨ておむつの内側に配置されているため、使い捨ておむつの外側から視認し難いことがある。使用者は、吸水シートの存在を認識し難く、汗等の体液の吸収性に対する安心感を十分に得ないことがあった。 Since the water-absorbent sheet of Patent Document 1 is disposed inside the disposable diaper in a pants-type state, it may be difficult to visually recognize from the outside of the disposable diaper. It is difficult for the user to recognize the presence of the water-absorbent sheet, and the user may not feel secure about the absorbability of the body fluid such as sweat.
　特に、吸水シートとバックシートが重なる領域では、使用者は、おむつの外側からの吸水シートの視認性が低くなり、吸水シートの存在を認識できないことがあった。吸水シートの視認性を確保するために、吸水シートと重ならない位置にバックシートを配置することが考えられる。しかし、吸水シートによって吸収した体液の漏れが発生するおそれがあり、使用者は、漏れに対する安心感を十分に得ないことがあった。 In particular, in the region where the water absorbing sheet and the back sheet overlap, the user may not be able to recognize the presence of the water absorbing sheet because the visibility of the water absorbing sheet from the outside of the diaper is low. In order to ensure the visibility of the water absorbing sheet, it is conceivable to dispose the back sheet at a position not overlapping the water absorbing sheet. However, there is a risk that leakage of the body fluid absorbed by the water-absorbent sheet may occur, and the user may not be fully satisfied with the leakage.
　よって、使用者が漏れに対する安心感と吸収性に対する安心感の両方を得易い使い捨ておむつが望まれる。 Therefore, a disposable diaper is desired that is easy for the user to obtain both a sense of security for leaks and a sense of security for absorbency.
　一態様に係る使い捨ておむつは、互いに直交する長手方向及び幅方向と、前胴回り域、後胴回り域、及び前記前胴回り域及び前記後胴回り域との間に配置された股下域と、少なくとも前記股下域に配置される吸収性本体と、前記前胴回り域及び前記後胴回り域の一方の少なくとも一方に配置される吸水シートと、前記吸水シートよりも非肌対向面側に配置される液不透過性のバックシートと、を有する使い捨ておむつであって、前記吸水シートは、着色されており、厚さ方向の平面視にて、前記バックシートの少なくとも一部は、前記吸水シートに重なっており、前記吸水シートは、前記バックシートの前記長手方向の外端縁よりも前記長手方向の外側に延出した長手延出部を有する。 A disposable diaper according to one aspect includes at least a crotch region disposed between a longitudinal direction and a width direction orthogonal to one another, a front waist area, a back waist area, and the front waist area and the back waist area. Absorbent body disposed in the region, a water absorbing sheet disposed in at least one of the front waist region and the back waist region, and liquid impermeability disposed on the non-skin opposing surface side of the water absorbing sheet And the water absorbing sheet is colored, and at least a part of the back sheet overlaps the water absorbing sheet in plan view in the thickness direction. The water absorbent sheet has a longitudinally extending portion extending outward in the longitudinal direction with respect to the longitudinal outer edge of the back sheet.
実施形態に係る使い捨ておむつの正面図である。It is a front view of the disposable diaper concerning an embodiment. 図１に示す使い捨ておむつを肌対向面側から見た平面図である。It is the top view which looked at the disposable diaper shown in FIG. 1 from the skin opposing surface side. 図１に示す使い捨ておむつを非肌対向面側から見た平面図である。It is the top view which looked at the disposable diaper shown in FIG. 1 from the non-skin opposing surface side. 図２に示すＡ－Ａ線に沿った断面図である。FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. 図２に示すＢ－Ｂ線に沿った断面図である。FIG. 3 is a cross-sectional view taken along the line B-B shown in FIG. 図１に示すＣ－Ｃ線に沿った断面図である。FIG. 2 is a cross-sectional view taken along a line CC shown in FIG. 図１に示すＤ－Ｄ線に沿った断面図である。FIG. 2 is a cross-sectional view taken along the line DD shown in FIG. 図１に示すＥ－Ｅ線に沿った断面図である。FIG. 2 is a cross-sectional view taken along the line EE shown in FIG. 図１に示す使い捨ておむつを筒体に装着した状態を示す図である。It is a figure which shows the state which mounted | wore the cylindrical body with the disposable diaper shown in FIG.
　（１）実施形態の概要
　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。
　一態様に係る使い捨ておむつは、互いに直交する長手方向及び幅方向と、前胴回り域、後胴回り域、及び前記前胴回り域及び前記後胴回り域との間に配置された股下域と、少なくとも前記股下域に配置される吸収性本体と、前記前胴回り域及び前記後胴回り域の一方の少なくとも一方に配置される吸水シートと、前記吸水シートよりも非肌対向面側に配置される液不透過性のバックシートと、を有する使い捨ておむつであって、前記吸水シートは、着色されており、厚さ方向の平面視にて、前記バックシートの少なくとも一部は、前記吸水シートに重なっており、前記吸水シートは、前記バックシートの前記長手方向の外端縁よりも前記長手方向の外側に延出した長手延出部を有する。 (1) Outline of Embodiment At least the following matters will become clear by the description of the present specification and the attached drawings.
A disposable diaper according to one aspect includes at least a crotch region disposed between a longitudinal direction and a width direction orthogonal to one another, a front waist area, a back waist area, and the front waist area and the back waist area. Absorbent body disposed in the region, a water absorbing sheet disposed in at least one of the front waist region and the back waist region, and liquid impermeability disposed on the non-skin opposing surface side of the water absorbing sheet And the water absorbing sheet is colored, and at least a part of the back sheet overlaps the water absorbing sheet in plan view in the thickness direction. The water absorbent sheet has a longitudinally extending portion extending outward in the longitudinal direction with respect to the longitudinal outer edge of the back sheet.
　本態様によれば、吸水シートが着色され、かつ吸水シートとバックシートが重なった領域と吸水シートとバックシートが重ならない長手延出部を備えるため、吸水シートの視認性と体液の漏れを両立できる。使用者は、漏れに対する安心感と吸収性に対する安心感の両方を得ることができる。 According to this aspect, since the water-absorbent sheet is colored, and the region where the water-absorbent sheet and the back sheet overlap, and the longitudinally extending part where the water-absorbent sheet and the back sheet do not overlap, visibility of the water-absorbent sheet and leakage of body fluid it can. The user can obtain both a sense of security for leaks and a sense of security for absorbency.
　好ましい一態様によれば、前記吸水シートと前記バックシートが重なる領域の前記長手方向の長さは、前記長手延出部の前記長手方向の長さよりも長い。 According to a preferred embodiment, the longitudinal length of the region where the water absorbent sheet and the back sheet overlap is longer than the longitudinal length of the longitudinal extension.
　本態様によれば、吸水シートとバックシートと重なる領域の方が長手延出部よりも長く、体液の漏れを抑制する効果を高めることができる。 According to this aspect, the region overlapping the water absorbent sheet and the back sheet is longer than the longitudinally extending portion, and the effect of suppressing the leakage of the body fluid can be enhanced.
　好ましい一態様によれば、前記吸収性本体は、吸収コアを有し、前記厚さ方向の平面視にて、前記吸水シートの少なくとも一部は、前記吸収コアの肌対向面側において、前記吸収コアの前記長手方向の外端縁に重なっている。 According to a preferred embodiment, the absorbent main body has an absorbent core, and in plan view in the thickness direction, at least a part of the water absorbent sheet is absorbed on the skin facing surface side of the absorbent core. Overlies the longitudinal outer edge of the core.
　吸水シートは、吸収コアの長手方向の外端縁に重なっており、吸収コアの厚さによって着用者側に近づいて配置される。よって、吸水シートが着用者に密着し、吸収性を向上できる。 The water absorbing sheet overlaps the longitudinal outer edge of the absorbent core, and is disposed closer to the wearer due to the thickness of the absorbent core. Therefore, a water absorption sheet can be stuck to a wearer and absorption can be improved.
　好ましい一態様によれば、前記吸収性本体は、吸収コアを有し、前記吸水シートは、前記長手方向において前記吸収コアと離間している。 According to a preferred embodiment, the absorbent main body has an absorbent core, and the water absorbent sheet is separated from the absorbent core in the longitudinal direction.
　吸収コアと吸水シートが長手方向において離間しているため、吸収コアが吸収した体液が吸水シートに伝わり難くなる。よって、吸水シートからの体液の漏れをより抑制できる。 Since the absorbent core and the water absorbing sheet are separated in the longitudinal direction, it is difficult for the body fluid absorbed by the absorbent core to be transmitted to the water absorbing sheet. Therefore, the leak of the bodily fluid from a water absorption sheet can be controlled more.
　好ましい一態様によれば、前記吸水シートは、前記バックシートの前記幅方向の外側縁よりも前記幅方向の外側に延出した幅延出部を有する。 According to a preferred aspect, the water absorbent sheet has a width extending part extending outward in the width direction with respect to the outer edge in the width direction of the back sheet.
　本態様によれば、使用者は、吸水シートの存在をより認識し易く、吸収性に対する安心感をより得やすい。 According to this aspect, the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
　好ましい一態様によれば、前記幅延出部は、前記バックシートの外側縁と前記使い捨ておむつの外側縁との幅方向の中心よりも前記幅方向の外側に延出している。 According to a preferred aspect, the width extending portion extends outward in the width direction more than the center in the width direction of the outer edge of the back sheet and the outer edge of the disposable diaper.
　本態様によれば、使用者は、吸水シートの存在をより認識し易く、吸収性に対する安心感をより得やすい。 According to this aspect, the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
　好ましい一態様によれば、前記吸水シートは、前記使い捨ておむつの前記幅方向の全域に配置されている。 According to a preferred aspect, the water absorbent sheet is disposed in the entire width direction of the disposable diaper.
　本態様によれば、使用者は、吸水シートの存在をより認識し易く、吸収性に対する安心感をより得やすい。 According to this aspect, the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
　好ましい一態様によれば、前記吸水シートの前記長手方向の外端縁から前記長手方向の外側に延びる外側領域と、前記吸水シートの前記長手方向の内端縁から前記長手方向の内側に延びる内側領域と、を有し、前記吸水シートが配置された領域の前記幅方向の収縮力は、前記外側領域と前記内側領の少なくとも一方の前記幅方向の収縮力よりも高い。 According to a preferred aspect, an outer region extending outward in the longitudinal direction from the outer edge in the longitudinal direction of the water-absorbent sheet and an inner side extending in the longitudinal direction from the inner edge in the longitudinal direction of the water-absorbent sheet An area, and the contraction force in the width direction of the area where the water absorbent sheet is disposed is higher than the contraction force in at least one of the outer area and the inner area.
　吸水シートが配置された領域の収縮力が外側領域の収縮力又は内側領域の収縮力よりも高いため、吸水シートが配置された領域が着用者の肌から浮かずに体にフィットし易い。吸水シートが体にフィットすることにより、効率よく体液を吸収し、吸収性を向上できる。 Since the contraction force of the area where the water absorbent sheet is disposed is higher than the contraction force of the outer area or the contraction force of the inner area, the area where the water absorbent sheet is disposed easily fits the body without floating from the skin of the wearer. By fitting the water-absorbent sheet to the body, the body fluid can be efficiently absorbed and the absorbability can be improved.
　好ましい一態様によれば、前記吸水シートが配置された領域の前記幅方向の収縮力は、前記外側領域の前記幅方向の収縮力よりも高い。 According to a preferred aspect, the contraction force in the width direction of the area in which the water absorbent sheet is disposed is higher than the contraction force in the width direction of the outer area.
　本態様によれば、吸水シートが外側領域側において肌から浮き上がり難くなり、吸水シートによって吸収した体液が胴回り開口部から漏れることを抑制できる。 According to this aspect, it is difficult for the water absorbent sheet to be lifted from the skin on the outer region side, and it is possible to suppress the leakage of the body fluid absorbed by the water absorbent sheet from the waist opening.
　好ましい一態様によれば、前記厚さ方向の平面視にて、前記長手延出部に重なり、かつ前記長手延出部の非肌対向面側に配置された伸縮性部材を有し、自然状態の前記使い捨ておむつを非肌対向面側から視認した状態における前記長手延出部のL*a*b*色空間のＬ値は、８２以上である。 According to a preferred aspect, in a plan view in the thickness direction, the stretchable member is overlapped with the longitudinally extending portion and disposed on the non-skin facing surface side of the longitudinally extending portion, and the natural state is obtained. The L value of the L * a * b * color space of the longitudinally extending portion in a state where the disposable diaper is viewed from the non-skin facing surface side is 82 or more.
　長手延出部のL*a*b*色空間のＬ値は、８２以上であることにより、伸縮性部材が目立ち難くなり、違和感を抑制できる。 When the L value of the L * a * b * color space of the longitudinally extending portion is 82 or more, the stretchable member becomes less noticeable, and the sense of discomfort can be suppressed.
　好ましい一態様によれば、前記長手方向において、前記第１胴回り域の外端縁と前吸収性本体の外端縁との長さは、前記第２胴回り域の外端縁と前吸収性本体の外端縁との長さよりも長い。 According to a preferred aspect, in the longitudinal direction, the lengths of the outer edge of the first waist area and the outer edge of the front absorbent main body are the outer edge of the second waist area and the front absorbent body. Longer than the outer edge of the
　本態様によれば、吸収性本体が着用者の脚によって圧縮されることによる影響を第１胴回り域が受け難く、第１胴回り域に配置された吸水シートの密着状態を維持し易い。 According to this aspect, the first waist area is not easily affected by the absorbent main body being compressed by the legs of the wearer, and the tightness of the water absorbent sheet disposed in the first waist area is easily maintained.
　（２）使い捨ておむつの実施形態
　以下、図面を参照して、実施形態に係る使い捨ておむつについて説明する。なお、以下の図面の記載において、同一又は類似の部分には、同一又は類似の符号を付している。ただし、図面は模式的なものであり、各寸法の比率等は現実のものとは異なることに留意すべきである。したがって、具体的な寸法等は、以下の説明を参酌して判断すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれ得る。 (2) Embodiment of disposable diaper Hereinafter, the disposable diaper which concerns on embodiment is demonstrated with reference to drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratio of each dimension is different from the actual one. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, parts having different dimensional relationships and proportions may be included between the drawings.
　図１は、本実施形態に係る使い捨ておむつ１０の正面図である。図２は、使い捨ておむつ１０を肌対向面側から見た平面図であり、図３は、使い捨ておむつを非肌対向面側から見た平面図である。図４は、図２に示すＡ－Ａ線に沿った断面図であり、図５は、図２に示すＢ－Ｂ線に沿った断面図である。図２及び図３に示す平面図は、伸張状態の使い捨ておむつを示している。なお、本発明における伸張状態とは、後述するサイド接合部６０を展開した状態において使い捨ておむつ１０を皺が形成されない状態まで伸張させた状態である。また、本発明における自然状態とは、パッケージに収容されている使い捨ておむつにあっては、パッケージから使い捨ておむつを取り出し、２０℃±２℃、相対湿度６０％±５％ＲＨの雰囲気下において２４時間放置した状態である。 FIG. 1 is a front view of a disposable diaper 10 according to the present embodiment. FIG. 2 is a plan view of the disposable diaper 10 as viewed from the skin-facing side, and FIG. 3 is a plan view of the disposable diaper as viewed from the non-skin-facing side. 4 is a cross-sectional view taken along the line AA shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along the line BB shown in FIG. The plan views shown in FIGS. 2 and 3 show the disposable diaper in a stretched state. In addition, the extended state in this invention is the state which extended the disposable diaper 10 to the state in which the wrinkles are not formed in the state which expand | deployed the side junction part 60 mentioned later. In the natural condition in the present invention, in the case of the disposable diaper housed in the package, the disposable diaper is removed from the package, and the environment is 20 ° C. ± 2 ° C., relative humidity 60% ± 5% RH for 24 hours It is in the state of leaving it.
　使い捨ておむつ１０は、互いに直交する長手方向Ｌ及び幅方向Ｗを有する。長手方向Ｌは、身体前側と身体後側とに延びる方向によって規定される。言い換えると、長手方向Ｌは、展開された使い捨ておむつ１０において前後に延びる方向である。また、使い捨ておむつ１０は、長手方向Ｌと幅方向Ｗの両方に直交する厚さ方向Ｔを有する。厚さ方向Ｔは、着用者側に向かう肌対向面側Ｔ１と、着用者から離れる側の非肌対向面側Ｔ２と、に延びる。 Disposable diaper 10 has a longitudinal direction L and a width direction W orthogonal to each other. The longitudinal direction L is defined by the direction extending to the body front side and the body back side. In other words, the longitudinal direction L is a direction extending back and forth in the deployed disposable diaper 10. Moreover, the disposable diaper 10 has the thickness direction T orthogonal to both the longitudinal direction L and the width direction W. The thickness direction T extends to the skin facing surface side T1 facing the wearer and the non-skin facing surface side T2 away from the wearer.
　使い捨ておむつ１０は、前胴回り域Ｓ１と、後胴回り域Ｓ２と、股下域Ｓ３と、を有する。前胴回り域Ｓ１は、着用者の前胴回り（腹部）に対向する領域である。後胴回り域Ｓ２は、着用者の後胴回り（背部）に対向する領域である。股下域Ｓ３は、着用者の股下に位置し、前胴回り域Ｓ１と後胴回り域Ｓ２との間に配置された領域である。本実施の形態では、後述する吸水シート７０は、後胴回り域Ｓ２に配置されている。よって、後胴回り域Ｓ２は、本発明における第１胴回り域を構成し、前胴回り域Ｓ１は、第２胴回り域を構成する。なお、変形例において、吸水シート７０が前胴回り域Ｓ１に配置され、後胴回り域Ｓ２が第２胴回り域を構成し、前胴回り域Ｓ１が第１胴回り域を構成してもよいし、吸水シート７０が前胴回り域Ｓ１及び後胴回り域Ｓ２の両方に配置されてもよい。 Disposable diaper 10 has front waist area S1, back waist area S2, and crotch area S3. The front waist area S1 is an area facing the front waist area (belly region) of the wearer. The back waist area S2 is an area facing the back waist (back) of the wearer. The crotch region S3 is a region located under the wearer's crotch and disposed between the front waist region S1 and the rear waist region S2. In the present embodiment, a water absorbent sheet 70 described later is disposed in the rear waist region S2. Therefore, back waist area S2 constitutes the 1st waist area in the present invention, and front waist area S1 constitutes the 2nd waist area. In the modification, the water absorbing sheet 70 may be disposed in the front waist area S1, the rear waist area S2 may constitute a second waist area, and the front waist area S1 may constitute a first waist area. 70 may be arranged in both the front waist area S1 and the rear waist area S2.
　使い捨ておむつ１０は、前胴回り部材２０と、後胴回り部材３０と、吸収性本体４０と、を有していてよい。前胴回り部材２０は、前胴回り域Ｓ１に配置されており、前胴回り部材２０が配置された領域が前胴回り域である。後胴回り部材３０は、後胴回り域Ｓ２に配置されており、後胴回り部材３０が配置された領域が後胴回り域である。前胴回り部材２０は、本発明における第２胴回り部材を構成し、後胴回り部材３０は、本発明における第１胴回り部材を構成する。前胴回り部材２０及び後胴回り部材３０は、例えば不織布シートによって構成されていてよい。具体的には、前胴回り部材２０及び後胴回り部材３０は、使い捨ておむつの最も非肌対向面側Ｔ２に配置された第１外装不織布シート３５と、第１外装不織布シート３５よりも肌対向面側Ｔ１に配置された第２外装不織布シート３６と、を有してよい。第１外装不織布シート３５及び第２外装不織布シート３６は、本発明における不織布シートを構成する。第１外装不織布シート３５及び第２外装不織布シート３６は、熱可塑性繊維を有する。本実施の形態における第１外装不織布シート３５の坪量及び第２外装不織布シート３６の坪量は、それぞれ１０ｇ／ｍ2～３５ｇ/ｍ2であってよい。第１外装不織布シート３５及び第２外装不織布シート３６は、スパンボンド不織布、SMS不織布、ポイントボンド不織布を用いることができる。第１外装不織布シート３５は、前胴回り部材２０の内端縁及び後胴回り部材３０の内端縁から長手方向Ｌの外側に延び、胴回り開口部６２を基点に肌対向面側Ｔ１に折り返されている。第１外装不織布シート３５の折り返し部３５Ｆは、後述する胴回り開口部６２の近傍において、使い捨ておむつの肌対向面側Ｔ１に配置されてよい。第１外装不織布シート３５の折り返し部３５Ｆは、後述する吸水シートの外端縁を覆っている。また、第１外装不織布シート３５と第２外装不織布シート３６との間には、後述する第１バックシート５１が配置されてよい。ここで、本発明における外端縁とは、長手方向Ｌの外側に位置する縁であり、内端縁とは、長手方向の内側に位置する縁である。 The disposable diaper 10 may have a front waistline member 20, a back waistline member 30, and an absorbent main body 40. The front waist member 20 is disposed in the front waist region S1, and the area in which the front waist member 20 is disposed is the front waist region. The back waistline member 30 is disposed in the back waistline region S2, and the area in which the back waistline member 30 is disposed is the back waistline region. The front waist member 20 constitutes a second waist member in the present invention, and the rear waist member 30 constitutes a first waist member in the present invention. The front waistline member 20 and the rear waistline member 30 may be made of, for example, a non-woven sheet. Specifically, the front waistline member 20 and the rear waistline member 30 are closer to the skin facing surface side than the first exterior nonwoven fabric sheet 35 disposed on the most non-skin opposing surface T2 of the disposable diaper and the first exterior nonwoven fabric sheet 35 And a second exterior nonwoven sheet 36 disposed at T1. The 1st exterior nonwoven fabric sheet 35 and the 2nd exterior nonwoven fabric sheet 36 constitute the nonwoven fabric sheet in the present invention. The first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36 have thermoplastic fibers. The basis weight of the basis weight and the second outer nonwoven sheet 36 of the first outer nonwoven sheet 35 in this embodiment, each may be 10g / m 2 ~ 35g / m 2. As the first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36, a spunbond nonwoven fabric, an SMS nonwoven fabric, or a point bond nonwoven fabric can be used. The first exterior nonwoven fabric sheet 35 extends outward from the inner edge of the front waist member 20 and the inner edge of the rear waist member 30 in the longitudinal direction L, and is folded back to the skin facing surface T1 with the waist opening 62 as a base point There is. The folded portion 35F of the first exterior nonwoven fabric sheet 35 may be disposed on the skin facing surface T1 of the disposable diaper in the vicinity of the waist opening 62 described later. The folded portion 35F of the first exterior nonwoven fabric sheet 35 covers the outer edge of the water absorbent sheet described later. Moreover, between the 1st exterior nonwoven fabric sheet 35 and the 2nd exterior nonwoven fabric sheet 36, the 1st back sheet 51 mentioned below may be arranged. Here, the outer edge in the present invention is an edge located outside in the longitudinal direction L, and the inner edge is an edge located inside in the longitudinal direction.
　使い捨ておむつ１０には、前胴回り部材２０の外側部と後胴回り部材３０の外側部を接合するサイド接合部６０が設けられていてよい。サイド接合部６０は、前胴回り部材２０の外側部と後胴回り部材３０の外側部とを互いに係止した部分によって規定される。ここで、本発明における外側部とは、幅方向Ｗにおける縁を含む幅方向に一定の範囲を占める部分であり、外側縁とは、幅方向における縁である。サイド接合部６０は、前胴回り部材２０の外側縁２０Ｅ（前胴回り域Ｓ１の外側縁）及び後胴回り部材３０の外側縁３０Ｅ（後胴回り域Ｓ２の外側縁）よりも幅方向の内側に位置してよい。サイド接合部６０の外側縁は、具体的には、前胴回り部材２０の外側縁２０Ｅ及び後胴回り部材３０の外側縁３０Ｅよりも５ｍｍ以上内側に位置してよい。図１に示すように、サイド接合部６０が形成された状態で、使い捨ておむつ１０には、着用者の胴が通される胴回り開口部６２と、着用者の脚がそれぞれ挿入される一対の脚回り開口部６６と、が形成される。胴回り開口部６２は、前胴回り域Ｓ１の前端縁と、後胴回り域Ｓ２の後端縁とによって規定されていてよい。 The disposable diaper 10 may be provided with a side joint 60 that joins the outer side of the front waistline member 20 and the outer side of the rear waistline member 30. The side joint portion 60 is defined by a portion where the outer side of the front waist member 20 and the outer side of the rear waist member 30 are engaged with each other. Here, the outer side portion in the present invention is a portion which occupies a certain range in the width direction including the edge in the width direction W, and the outer side edge is an edge in the width direction. Side joint portion 60 is positioned inward in the widthwise direction from outer edge 20E of front waist member 20 (outside edge of front waist region S1) and outer edge 30E of rear waist member 30 (outside edge of rear waist region S2) You may Specifically, the outer edge of the side joint 60 may be located 5 mm or more inside the outer edge 20E of the front waist member 20 and the outer edge 30E of the rear waist member 30. As shown in FIG. 1, with the side joint 60 formed, the disposable diaper 10 has a waist opening 62 through which the wearer's trunk passes and a pair of legs into which the wearer's legs are respectively inserted. The rotation opening 66 is formed. The waist opening 62 may be defined by the front end edge of the front waist region S1 and the rear end edge of the rear waist region S2.
　ここで、図２は、サイド接合部６０における接合を解除し、使い捨ておむつ１０を展開した状態を示している。サイド接合部６０は、前胴回り部材２０及び後胴回り部材３０のそれぞれにおいて、長手方向Ｌに沿って延びていてよい。この場合、前胴回り域Ｓ１と股下域Ｓ３との境界は、前胴回り部材２０に設けられたサイド接合部６０の後端縁によって規定されていてよい。同様に、後胴回り域Ｓ２と股下域Ｓ３との境界は、後胴回り部材３０に設けられたサイド接合部６０の前端縁によって規定されていてよい。 Here, FIG. 2 shows a state in which bonding at the side bonding portion 60 is released and the disposable diaper 10 is developed. The side joint portion 60 may extend along the longitudinal direction L in each of the front waistline member 20 and the rear waistline member 30. In this case, the boundary between the front waistline region S1 and the crotch region S3 may be defined by the rear end edge of the side joint portion 60 provided on the front waistline member 20. Similarly, the boundary between the back waist area S2 and the crotch area S3 may be defined by the front end edge of the side joint portion 60 provided on the back waist part 30.
　前胴回り域Ｓ１及び後胴回り域Ｓ２には、幅方向Ｗに伸縮可能な伸縮性部材３２が配置されていてよい。伸縮性部材３２は、例えば、幅方向Ｗに伸縮可能な糸ゴム、又は幅方向Ｗに伸縮可能な弾性シートによって構成されていてよい。この代わりに、伸縮性部材３２は、例えば伸縮可能なシートにより構成された前胴回り部材２０自体及び後胴回り部材３０自体によって構成されていてもよい。 In the front waistline region S1 and the rear waistline region S2, stretchable members 32 that can extend and contract in the width direction W may be disposed. The stretchable member 32 may be made of, for example, thread rubber that can stretch in the width direction W, or an elastic sheet that can stretch in the width direction W. Alternatively, the stretchable member 32 may be configured by the front waistline member 20 itself formed of, for example, a stretchable sheet and the rear waistline member 30 itself.
　第２胴回り域を構成する前胴回り域Ｓ１の幅方向Ｗの収縮力は、第１胴回り域を構成する後胴回り域Ｓ２の幅方向Ｗの収縮力よりも高くてよい。前胴回り域Ｓ１の収縮力が後胴回り域Ｓ２の収縮力よりも高いため、装着された状態で後胴回り域Ｓ２の幅方向Ｗの外側縁が前胴回り域Ｓ１側に引っ張られる。よって、後胴回り域の幅方向の外側縁が、正面視にて着用者から視認され易くなる。また、前胴回り域Ｓ１及び後胴回り域Ｓ２が収縮すると、後胴回り域Ｓ２が前胴回り域Ｓ１側に引っ張られる。後胴回り域Ｓ２に形成される皺が前胴回り域Ｓ１よりも少なくなり、後胴回り域Ｓ２が肌に密着し易くなる。 The contraction force in the width direction W of the front waist area S1 constituting the second waist area may be higher than the contraction force in the width direction W of the rear waist area S2 constituting the first waist area. Since the contraction force of the front waist area S1 is higher than the contraction force of the rear waist area S2, the outer edge in the width direction W of the rear waist area S2 is pulled toward the front waist area S1 in the mounted state. Therefore, the outer edge in the width direction of the back waist area becomes easily visible from the wearer in front view. When the front waistline region S1 and the rear waistline region S2 contract, the rear waistline region S2 is pulled toward the front waistline region S1. The wrinkles formed in the back waist area S2 are smaller than that of the front waist area S1, and the back waist area S2 easily adheres to the skin.
　なお、本実施の形態における収縮力は、幅方向の縮み易さであり、以下のように測定できる。先ず、使い捨ておむつのサイド接合部を破り、使い捨ておむつを展開状態とする。前胴回り部材の後端縁及び後胴回り部材の前端縁に沿っておむつを切断し、股下域を切り離す。これにより、前胴回り域のサンプルと後胴回り域のサンプルを得ることができる。また、後述する第１領域及び第２領域の収縮力を測定する際は、前胴回り域及び後胴回り域から第１領域及び第２領域を切り出し、第１領域のサンプルと第２領域のサンプルを得ることができる。 The contraction force in the present embodiment is the contraction in the width direction, and can be measured as follows. First, the side joint of the disposable diaper is broken, and the disposable diaper is brought into the unfolded state. The diaper is cut along the rear end edge of the front waist member and the front edge of the rear waist member to separate the crotch region. Thereby, it is possible to obtain a sample of the front waist area and a sample of the rear waist area. In addition, when measuring the contraction force of the first area and the second area described later, the first area and the second area are cut out from the front waist area and the rear waist area, and the sample of the first area and the sample of the second area You can get it.
　そして、各サンプルにつき幅方向の各端部１０ｍｍを掴み部とし、各掴み部以外の部分を残りの部分とした場合に、当該残りの部分を長手方向及び幅方向に皺なく広げた状態（１００％の伸張状態の寸法）での幅方向の寸法ＬＡ（ｍｍ）を予め側定しておく。そうしたら、サンプルの各掴み部を、引張り試験機（例えば、島津製作所社製のオートグラフＡＧＳ－Ｘ等）が備える上下の各チャックに把持させて、上下の各チャック同士の間隔を広げることにより、収縮状態のサンプルを１００（ｍｍ／ｍｉｎ）の引っ張り速度で上記のＬＡの８５％の長さまで幅方向に伸張し、しかる後に、ＬＡの７０％の長さまで各チャック同士の間隔を狭めた状態にする。そして、この狭めた状態の時の力を収縮力（Ｎ）とする。 Then, in the case where each end 10 mm in the width direction of each sample is used as a grip, and a portion other than each grip is used as the remaining portion, the remaining portion is unfolded in the longitudinal and width directions (100 The dimension LA (mm) in the width direction in% in the stretched state) is previously determined. Then, hold the sample grips on the upper and lower chucks of the tensile tester (for example, Autograph AGS-X manufactured by Shimadzu Corporation) to widen the distance between the upper and lower chucks. Stretch the shrunk sample at a pull rate of 100 (mm / min) to a length of 85% of the above LA, and then narrow the distance between chucks to a length of 70% of LA. Make it And the force at the time of this narrowed state is made into contractile force (N).
　使い捨ておむつ１０は、使い捨ておむつを廃棄するためのテープ部材８０を有してよい。テープ部材８０は、使い捨ておむつ１０の最も非肌対向面側Ｔ２に配置されてよい。テープ部材８０は、廃棄時には、廃棄前の状態と比較して、長手方向Ｌに延出可能に構成されてよい。具体的には、テープ部材８０は、幅方向Ｗに沿った折り目を基点に折り畳まれてよい。テープ部材８０の長手方向Ｌの曲げ剛性は、使い捨ておむつの構成する他の構成部材よりも長手方向の曲げ剛性よりも高くてよく、テープ部材８０の幅方向の曲げ剛性は、使い捨ておむつの構成する他の構成部材よりも幅方向の曲げ剛性よりも高くてよい。 The disposable diaper 10 may have a tape member 80 for disposing of the disposable diaper. The tape member 80 may be disposed on the most non-skin facing surface T2 of the disposable diaper 10. At the time of disposal, the tape member 80 may be configured to be extendable in the longitudinal direction L as compared with the state before disposal. Specifically, the tape member 80 may be folded at the origin along the fold along the width direction W. The bending rigidity in the longitudinal direction L of the tape member 80 may be higher than the bending rigidity in the longitudinal direction than the other constituent members constituting the disposable diaper, and the bending rigidity in the width direction of the tape member 80 constitutes the disposable diaper It may be higher than the flexural rigidity in the width direction than other components.
　吸収性本体４０は、少なくとも股下域Ｓ３に配置されてよい。吸収性本体４０は、前胴回り域Ｓ１及び後胴回り域Ｓ２に延びていてよい。吸収性本体４０は、前胴回り部材２０及び後胴回り部材３０とは別体として構成されていてよい。この場合、吸収性本体４０は、前胴回り域Ｓ１及び後胴回り域Ｓ２において、それぞれ前胴回り部材２０及び後胴回り部材３０と接合されていてよい。図２に示すように、長手方向Ｌにおいて、後胴回り域の外端縁と吸収性本体の外端縁との長さＬ１２は、前胴回り域Ｓ１の外端縁と吸収性本体の外端縁との長さＬ１１よりも長くてよい。 The absorbent main body 40 may be disposed at least in the crotch region S3. The absorbent body 40 may extend into the front waist area S1 and the rear waist area S2. The absorbent main body 40 may be configured separately from the front waistline member 20 and the rear waistline member 30. In this case, the absorbent main body 40 may be joined to the front waistline member 20 and the rear waistline member 30 in the front waistline region S1 and the rear waistline region S2, respectively. As shown in FIG. 2, in the longitudinal direction L, the length L12 between the outer edge of the back waist area and the outer edge of the absorbent body is the outer edge of the front waist area S1 and the outer edge of the absorbent body And may be longer than L11.
　吸収性本体４０は、少なくとも吸収コア４５を含んでいる。吸収コア４５は、例えば粉砕パルプもしくは高吸収性ポリマー（ＳＡＰ）、又はこれらの混合物を含んでいてよい。吸収コア４５は、少なくとも股下域Ｓ３に配置されている。好ましくは、吸収コア４５は、長手方向Ｌにおいて、前胴回り域Ｓ１から後胴回り域Ｓ２にわたって延びていてよい。吸収コア４５は、コアラップによって覆われていてよい。さらに、吸収性本体４０は、吸収コア４５の肌対向面側に位置するトップシート４１を有していてよい。 The absorbent body 40 includes at least an absorbent core 45. The absorbent core 45 may comprise, for example, ground pulp or superabsorbent polymer (SAP), or mixtures thereof. The absorbent core 45 is disposed at least in the crotch region S3. Preferably, the absorbent core 45 may extend from the front waist area S1 to the rear waist area S2 in the longitudinal direction L. The absorbent core 45 may be covered by a core wrap. Furthermore, the absorbent main body 40 may have a top sheet 41 located on the skin facing surface side of the absorbent core 45.
　吸収性本体４０は、レッグフラップ４６を有してよい。レッグフラップ４６は、吸収コア４５よりも幅方向Ｗの外側に配置されてよい。レッグフラップ４６は、少なくとも２層のレッグシート４７と、レッグシート４７間に配置されたレッグ弾性部材４８と、を有してよい。レッグシート４７は、トップシート４１の一部であってもよいし、図示しないバックシートの一部であってもよいし、トップシート４１及びバックシートと別体のシートであってもよい。レッグ弾性部材４８は、長手方向に伸長された状態でレッグシート４７に固定されている。レッグ弾性部材４８は、幅方向に間隔を空けて配置された複数の糸ゴム（３２０～６２０ｄｔｅｘ）によって構成されてよい。レッグ弾性部材４８は、レッグフラップ４６における長手方向の所定の領域において伸長状態で配置されている。レッグ弾性部材４８が伸長状態で配置されている領域ではレッグフラップ４６に対して長手方向に収縮する力が働き、レッグ弾性部材４８が伸長状態で配置されていない領域ではレッグフラップ４６に対して長手方向に収縮する力が働かない。本明細書中では、この長手方向に収縮する力が働く領域の長手方向長さをレッグ弾性部材４８の「有効長」とも呼ぶ。有効長部分は、おむつの自然状態においてレッグ弾性部材の収縮によって皺が形成されている部分である。図２においてレッグ弾性部材４８の有効長部分４９を示す。吸収性本体４０は、図２に示す接合領域Ｒ４０において、前胴回り部材２０及び後胴回り部材３０に接合されている。有効長部分４９は、接合領域Ｒ４０に重なっていてよい。 The absorbent body 40 may have leg flaps 46. The leg flaps 46 may be disposed outside the absorbent core 45 in the width direction W. The leg flaps 46 may have at least two layers of leg sheets 47 and leg elastic members 48 disposed between the leg sheets 47. The leg sheet 47 may be part of the top sheet 41, part of the back sheet not shown, or may be a sheet separate from the top sheet 41 and the back sheet. The leg elastic member 48 is fixed to the leg sheet 47 in a longitudinally extended state. The leg elastic member 48 may be constituted by a plurality of thread rubbers (320 to 620 dtex) spaced apart in the width direction. The leg elastic member 48 is disposed in a stretched state in a predetermined longitudinal area of the leg flap 46. In the region where the leg elastic member 48 is disposed in the extended state, a force for contracting longitudinally with respect to the leg flaps 46 is exerted, and in the region where the leg elastic member 48 is not disposed in the extended state, the elastic force is elongated relative to the leg flap 46 The force to contract in the direction does not work. In the present specification, the longitudinal length of the region where the longitudinally contracting force acts is also referred to as the "effective length" of the leg elastic member 48. The effective length portion is a portion where wrinkles are formed by contraction of the leg elastic member in the natural state of the diaper. The effective length 49 of the leg elastic member 48 is shown in FIG. The absorbent main body 40 is joined to the front waistline member 20 and the rear waistline member 30 in a joining region R40 shown in FIG. The effective length portion 49 may overlap the junction region R40.
　前胴回り域Ｓ１及び後胴回り域Ｓ２の一方には、吸水シート７０が配置されている。吸水シート７０は、汗等の体液を吸収可能なシートである。吸水シート７０は、後胴回り域Ｓ２に配置されてよい。着用者は、腹側に比べて背側において汗をかき易い。着用者の背側に装着される後胴回り域Ｓ２に吸水シート７０を配置することにより、吸汗性をより向上できる。吸水シート７０は、少なくともパルプ繊維を含むパルプシート７１を有してよい。パルプ繊維は、例えば、木材パルプ及び非木材パルプが挙げられる。木材パルプとしては、針葉樹パルプ及び広葉樹パルプ等を例示でき、非木材パルプとしては、綿パルプ、麻パルプ、ワラパルプ、竹パルプ、バガスパルプ、ヨシパルプ、ケナフパルプ等を例示できる。パルプシート７１は、パルプ繊維以外の親水性繊維を含んでいてよい。親水性繊維は、再生セルロース繊維（レーヨン、ビスコースレーヨン等）のような天然繊維、半合成セルロース繊維（アセテート繊維等）、精製セルロース繊維等が挙げられる。 A water absorbing sheet 70 is disposed in one of the front waist area S1 and the rear waist area S2. The water absorbing sheet 70 is a sheet capable of absorbing body fluid such as sweat. The water absorbing sheet 70 may be disposed in the back waist area S2. The wearer is more likely to sweat on the dorsal side than on the ventral side. By arranging the water absorbing sheet 70 in the back waist area S2 mounted on the back side of the wearer, it is possible to further improve the sweat absorbing property. The water absorbing sheet 70 may have a pulp sheet 71 containing at least pulp fibers. Pulp fibers include, for example, wood pulp and non-wood pulp. Examples of wood pulp include softwood pulp and hardwood pulp. Examples of non-wood pulp include cotton pulp, hemp pulp, straw pulp, bamboo pulp, bagasse pulp, reed pulp, kenaf pulp and the like. The pulp sheet 71 may contain hydrophilic fibers other than pulp fibers. Examples of hydrophilic fibers include natural fibers such as regenerated cellulose fibers (rayon, viscose rayon and the like), semi-synthetic cellulose fibers (acetate fibers and the like), purified cellulose fibers and the like.
　吸水シート７０は、吸水不織布シート７２を更に有してもよい。吸水不織布シート７２は、本発明における不織布シートを構成する。吸水不織布シート７２は、厚さ方向Ｔにおいてパルプシート７１を挟んで配置されてよい。本実施の形態の吸水シート７０は、１０～３５ｇ／ｍ2のパルプシート７１と、パルプシート７１の厚さ方向の両側に配置された１０～２５ｇ／ｍ2の吸水不織布シート７２と、を有してよい。パルプシート７１は、パルプ繊維を有し、熱可塑性繊維を有しなくてもよい。吸水不織布シート７２は、熱可塑性繊維を有する。熱可塑性樹脂繊維としては、ポリオレフィン系ポリマー（ポリエチレン、ポリプロピレン、ポリエステル系、ポリエチレンテレフタレート等）や、ポリアミド系ポリマー、アクリル系ポリマー、これらを用いた繊維や、これらを組み合わせて構成された繊維を例示できる。吸水シート７０は、着色されていてよい。着色は、吸水シート７０を構成するパルプシート自体の色であってもよいし、印刷等によって着色されていてもよい。吸水シート７０の全体に亘って着色されていてもよいし、吸収シートの一部に着色部が設けられていてもよい。着色部は、図柄や絵柄を示してもよいし、ストライプなどの模様を示してもよい。本実施の形態の吸収シートは、吸水シート７０の全体に亘って着色されている。 The water absorbing sheet 70 may further have a water absorbing non-woven sheet 72. The water absorbent nonwoven fabric sheet 72 constitutes the nonwoven fabric sheet in the present invention. The water absorbing non-woven sheet 72 may be disposed across the pulp sheet 71 in the thickness direction T. Water sheet 70 of this embodiment, chromatic pulp sheet 71 of 10 ~ 35g / m 2, a water-absorbing nonwoven fabric sheet 72 arranged on both sides in the thickness direction of the pulp sheet 71 10 ~ 25g / m 2, the You may The pulp sheet 71 has pulp fibers and may not have thermoplastic fibers. The water absorbent nonwoven sheet 72 has a thermoplastic fiber. Examples of thermoplastic resin fibers include polyolefin polymers (polyethylene, polypropylene, polyester, polyethylene terephthalate, etc.), polyamide polymers, acrylic polymers, fibers using these, and fibers made by combining these. . The water absorbing sheet 70 may be colored. The coloring may be the color of the pulp sheet itself constituting the water absorbent sheet 70, or may be colored by printing or the like. The whole of the water absorbing sheet 70 may be colored, or a colored portion may be provided on part of the absorbent sheet. The colored portion may show a pattern or a pattern, or may show a pattern such as a stripe. The absorbent sheet of the present embodiment is colored throughout the water absorbent sheet 70.
　吸水シート７０は、使い捨ておむつ１０の最も肌対向面側Ｔ１に配置されている。よって、吸水シート７０は、装着状態において着用者の肌に触れる。吸水シート７０は、肌に触れ、汗などの体液を吸収する。吸水シート７０は、厚さ方向において少なくとも第１外装不織布シート３５及び第２外装不織布シート３６に重なってよい。吸水シート７０は、接着剤等の接着手段によって吸水シート７０の非肌対向面側Ｔ２に位置するシート等の部材に接合されている。 The water absorbing sheet 70 is disposed on the most skin-facing side T1 of the disposable diaper 10. Therefore, the water absorbing sheet 70 touches the skin of the wearer in the wearing state. The water absorbing sheet 70 touches the skin and absorbs body fluid such as sweat. The water absorbing sheet 70 may overlap at least the first exterior nonwoven sheet 35 and the second exterior nonwoven sheet 36 in the thickness direction. The water absorbing sheet 70 is bonded to a member such as a sheet located on the non-skin facing surface T2 of the water absorbing sheet 70 by an adhesive or the like.
　吸水シート７０は、厚さ方向の平面視にて、レッグフラップ４６の有効長部分と重ならなくてよい。本実施の形態のように、前胴回り部材と後胴回り部材が長手方向に離間した構造のパンツ型おむつは、吸収コア４５よりも幅方向Ｗ外側に延出し、かつ前胴回り部材２０及び後胴回り部材３０に固定されているレッグフラップ４６によって、使い捨ておむつの脚回り領域を着用者の脚回りにフィットさせる。しかし、吸収コアが体液を吸収すると、体液の重みによって吸収性本体が下方に下がる力が発生し、レッグフラップ４６の長手方向に収縮によって前胴回り部材及び後胴回り部材に対して下方に下がる力がかかるおそれがある。レッグフラップ４６の有効長部分４９と吸水シート７０が厚さ方向において重ならないため、レッグフラップ４６を介して伝達される下方への力を吸水シート７０に掛かり難くなり、吸水シートの下方へのずれを抑止し易い。よって、吸水シートの長手方向の位置ずれを抑制し、着用者の胴回りに吸水シートを保持し続け易い。よって、着用者に対して適切な位置に吸水シート７０を配置し、着用者の汗を吸収する効果を持続し易い。 The water absorbing sheet 70 may not overlap with the effective length portion of the leg flap 46 in plan view in the thickness direction. As in the present embodiment, a pants-type diaper having a structure in which the front waistline member and the rear waistline member are separated in the longitudinal direction extends outward in the width direction W from the absorbent core 45, and the front waistline member 20 and the rear waistline member The leg flaps 46 fixed at 30 fit around the leg area of the disposable diaper around the legs of the wearer. However, when the absorbent core absorbs the body fluid, the weight of the body fluid generates a force to lower the absorbent body downward, and the contraction in the longitudinal direction of the leg flaps 46 causes the force to descend downward to the front and rear waist members. There is such a risk. Since the effective length portion 49 of the leg flap 46 and the water absorbing sheet 70 do not overlap in the thickness direction, the downward force transmitted through the leg flap 46 is less likely to be applied to the water absorbing sheet 70, and the water absorbing sheet deviates downward. It is easy to deter Therefore, it is easy to hold the water absorbent sheet around the wearer's waist by suppressing positional deviation of the water absorbent sheet in the longitudinal direction. Therefore, it is easy to arrange the water absorption sheet 70 in a suitable position with respect to the wearer, and to maintain the effect of absorbing the sweat of the wearer.
　また、レッグフラップのレッグ弾性部材のうち、幅方向の外側に位置するレッグ弾性部材４８２は、接合領域Ｒ４０に重なってなく、幅方向の内側に位置するレッグ弾性部材４８１は、接合領域Ｒ４０に重なってよい。幅方向の外側に位置するレッグ弾性部材４８２が接合領域Ｒ４０に重なっていないため、着用者の脚回りに対してレッグフラップがフィットした際にレッグフラップが柔軟に変形でき、着用者が脚を動かし易くなる。また、幅方向の内側に位置するレッグ弾性部材４８１は、体液を吸収する吸収コアに隣接しており、体液による重みがかかり易い。幅方向の内側に位置するレッグ弾性部材４８１が接合領域Ｒ４０に重なっていることにより、体液に吸収によって吸収コアが重くなった際にも、当該レッグ弾性部材によって吸収性本体を胴回り部材側に引き上げ続け易くなる。 Further, among the leg elastic members of the leg flaps, the leg elastic members 482 located outside in the width direction do not overlap the bonding area R40, and the leg elastic members 481 located inside in the width direction overlap with the bonding area R40. You may Since the leg elastic member 482 located outside in the width direction does not overlap the joint region R40, the leg flap can be deformed flexibly when the leg flap fits around the leg of the wearer, and the wearer moves the leg. It will be easier. Further, the leg elastic member 481 located inside in the width direction is adjacent to the absorbent core that absorbs the body fluid, and is easily weighted by the body fluid. Since the leg elastic member 481 located inside in the width direction overlaps the bonding region R40, even when the absorbent core becomes heavy due to absorption by body fluid, the leg elastic member pulls up the absorbent main body toward the waist part. It will be easier to continue.
　吸水シート７０は、後胴回り域Ｓ２の長手方向Ｌの全域に対する一部に設けられていてよい。吸水シート７０の外端縁７０２は、サイド接合部６０の外端縁６０２よりも長手方向Ｌの内側に位置してよい。吸水シート７０の内端縁７０１は、サイド接合部６０の内端縁６０１よりも長手方向Ｌの内側に位置してよい。後胴回り域Ｓ２は、幅方向Ｗにおいて後胴回り域Ｓ２の一方の外側縁から他方の外側縁まで延び、長手方向Ｌにおいて吸水シート７０の内端縁から吸水シート７０の外端縁までに延びる第１領域Ｒ１を有してよい。第１領域Ｒ１は、換言すると、吸水シート７０が配置された領域と、後胴回り域Ｓ２において吸水シート７０が配置された領域から幅方向に延びる領域と、を合わせた領域である。また、前胴回り域Ｓ１は、第１領域Ｒ１と幅方向Ｗにおいて連なり、かつ幅方向Ｗにおいて前胴回り域Ｓ１の一方の外側縁から他方の外側縁まで延びる第２領域Ｒ２を有してよい。第１領域Ｒ１と第２領域は、図１に示すパンツ型の状態で幅方向Ｗに連なっていればよい。また、吸水シート７０は、後胴回り域Ｓ２の幅方向Ｗの全域に配置されてよい。吸水シート７０は、サイド接合部６０よりも幅方向Ｗの外側に配置された延出部７５を有してよい。延出部７５は、吸水シート７０の外側縁７０Ｅとサイド接合部６０の間の部分である。 The water absorbing sheet 70 may be provided to a part of the entire area in the longitudinal direction L of the back waist area S2. The outer edge 702 of the water absorbent sheet 70 may be located inside the outer edge 602 of the side joint 60 in the longitudinal direction L. The inner edge 701 of the water absorbing sheet 70 may be located inside the longitudinal direction L than the inner edge 601 of the side joint 60. The back waist area S2 extends from one outer edge to the other outer edge of the back waist area S2 in the width direction W, and extends from the inner edge of the water absorbent sheet 70 to the outer edge of the water absorbent sheet 70 in the longitudinal direction L It may have one area R1. In other words, the first area R1 is an area in which the area in which the water absorbing sheet 70 is disposed and the area extending in the width direction from the area in which the water absorbing sheet 70 is disposed in the back waist area S2. Further, the front waistline region S1 may have a second region R2 contiguous with the first region R1 in the width direction W and extending from one outer edge of the front waistline region S1 to the other outer edge in the width direction W. The first region R1 and the second region may be continuous in the width direction W in the pants-type state shown in FIG. Further, the water absorbing sheet 70 may be disposed in the entire area in the width direction W of the back waist area S2. The water absorbing sheet 70 may have an extending portion 75 disposed outside the side bonding portion 60 in the width direction W. The extension portion 75 is a portion between the outer edge 70E of the water absorbent sheet 70 and the side joint portion 60.
　使い捨ておむつ１０は、吸水シート７０よりも非肌対向面側Ｔ２に配置された液不透過性のバックシート５０を有する。バックシート５０は、厚さ方向Ｔの平面視にて、少なくとも一部が吸水シートと重なっていてよい。よって、吸水シートによって吸収された体液が非肌対向面側（おむつの外側）に漏れることを抑制できる。なお、バックシート５０の少なくとも一部が吸水シートよりも非肌対向面側Ｔ２に配置されていればよい。バックシート５０は、吸水シート７０よりも非肌対向面側Ｔ２に配置されていない部分を有してもよい。 The disposable diaper 10 has a liquid impervious back sheet 50 disposed closer to the non-skin facing surface T2 than the water absorbent sheet 70. The back sheet 50 may at least partially overlap the water absorbent sheet in plan view in the thickness direction T. Therefore, it can suppress that the bodily fluid absorbed by the water absorption sheet leaks to the non-skin opposing surface side (outside of a diaper). In addition, at least one part of the back sheet 50 should just be arrange | positioned rather than a water absorption sheet at the non-skin opposing surface side T2. The back sheet 50 may have a portion which is not disposed on the non-skin facing surface T2 more than the water absorbent sheet 70.
　図４に示すように、バックシート５０は、第１バックシート５１と、第１バックシート５１よりも肌対向面側Ｔ１に位置する第２バックシート５２と、を有してよい。第１バックシート５１は、前胴回り域Ｓ１と後胴回り域Ｓ２のそれぞれに配置されてよい。第１バックシート５１は、第１外装不織布シート３５及び第２外装不織布シート３６の間に位置してよい。第１バックシート５１の内端縁５１１は、後胴回り域Ｓ２又は前胴回り域Ｓ１の内端縁よりも長手方向Ｌの外側に位置してよい。後胴回り域Ｓ２における第１バックシート５１の内端縁５１１は、吸水シート７０の内端縁７０１よりも長手方向Ｌの内側に位置してよい。第１バックシート５１の外端縁５１２は、後胴回り域Ｓ２又は前胴回り域Ｓ１の外端縁よりも長手方向Ｌの内側に位置してよい。後胴回り域Ｓ２における第１バックシート５１の外端縁５１２は、吸水シート７０の外端縁７０２よりも長手方向の内側に位置してよく、第２バックシート５２の外端縁５２２よりも長手方向Ｌの外側に位置してもよい。本実施の形態において、第１バックシート５１の外端縁５１２は、バックシートの外端縁を構成する。なお、変形例において、第２バックシート５２の外端縁５２２がバックシートの外端縁を構成してもよい。 As shown in FIG. 4, the back sheet 50 may have a first back sheet 51 and a second back sheet 52 positioned on the skin facing surface T1 more than the first back sheet 51. The first back sheet 51 may be disposed in each of the front waistline region S1 and the rear waistline region S2. The first backsheet 51 may be located between the first exterior nonwoven sheet 35 and the second exterior nonwoven sheet 36. The inner edge 511 of the first back sheet 51 may be located outside the inner edge of the back waist area S2 or the front waist area S1 in the longitudinal direction L. The inner edge 511 of the first back sheet 51 in the rear waist region S2 may be located inside the longitudinal direction L than the inner edge 701 of the water absorbent sheet 70. The outer edge 512 of the first back sheet 51 may be located inward in the longitudinal direction L than the outer edge of the back waist area S2 or the front waist area S1. The outer edge 512 of the first back sheet 51 in the rear waist region S2 may be located longitudinally inward of the outer edge 702 of the water absorbent sheet 70 and longer than the outer edge 522 of the second back sheet 52. It may be located outside the direction L. In the present embodiment, the outer edge 512 of the first backsheet 51 constitutes the outer edge of the backsheet. In the modification, the outer edge 522 of the second back sheet 52 may constitute the outer edge of the back sheet.
　第２バックシート５２は、前胴回り域Ｓ１、後胴回り域Ｓ２及び股下域Ｓ３に跨って配置されてよい。第２バックシート５２は、吸収コア４５の非肌対向面側Ｔ２であって、前胴回り部材２０及び後胴回り部材３０よりも肌対向面側Ｔ１に配置されてよい。第２バックシート５２の外端縁５２２は、後胴回り域Ｓ２又は前胴回り域Ｓ１の外端縁よりも長手方向Ｌの内側に位置する。後胴回り域Ｓ２における第２バックシート５２の外端縁５２２は、吸水シート７０の外端縁７０２よりも内側に位置してよく、第１バックシートの外端縁５１２よりも内側に位置してよい。第１バックシート５１及び第２バックシート５２は、使い捨ておむつ１０の幅方向Ｗの中央部に配置され、使い捨ておむつ１０の幅方向Ｗの側部に配置されていなくてよい。 The second back sheet 52 may be disposed across the front waist area S1, the rear waist area S2, and the crotch area S3. The second back sheet 52 may be disposed on the non-skin facing surface T2 of the absorbent core 45 and on the skin facing surface T1 relative to the front waist member 20 and the rear waist member 30. The outer edge 522 of the second back sheet 52 is located inward in the longitudinal direction L than the outer edge of the back waist area S2 or the front waist area S1. The outer edge 522 of the second back sheet 52 in the back waist area S2 may be located inside the outer edge 702 of the water absorbent sheet 70 and located inside the outer edge 512 of the first back sheet. Good. The first back sheet 51 and the second back sheet 52 may be disposed at the central portion in the width direction W of the disposable diaper 10 and may not be disposed at the side portion in the width direction W of the disposable diaper 10.
　厚さ方向の平面視にて、バックシート５０の少なくとも一部は、吸水シート７０に重なってよい。吸水シート７０は、第１バックシート５１の少なくとも一部と重なっていてもよいし、第２バックシート５２の少なくとも一部と重なっていてもよいし、第１バックシート５１及び第２バックシート５２の両方に重なっていてもよい。吸水シート７０は、第１バックシート５１の外端縁５１２よりも長手方向Ｌの内側の領域において、バックシート５０に重なっている。吸水シート７０は、第２バックシート５２の外端縁５２２よりも長手方向Ｌの内側の領域では、第１バックシート５１と第２バックシートの両方に重なっている。また、吸水シート７０は、幅方向Ｗにおいて、第１バックシート５１の外側縁よりも内側の領域又は第２バックシート５２の外側縁よりも内側の領域において、バックシート５０に重なっている。吸水シート７０の少なくとも一部がバックシート５０に重なっているため、吸水シート７０によって吸収した体液の漏れを抑制できる。また、使用者は、おむつの外側から視認した際に、吸水シート７０の色の濃さの違いによって、吸水シート７０の少なくとも一部がバックシートと重なっていることを把握できる。よって、吸水シート７０によって吸収した体液の漏れに対する安心感を得やすい。 At least a part of the backsheet 50 may overlap the water absorbent sheet 70 in plan view in the thickness direction. The water absorbing sheet 70 may overlap with at least a portion of the first back sheet 51, or may overlap with at least a portion of the second back sheet 52, or the first back sheet 51 and the second back sheet 52. May overlap both. The water absorbing sheet 70 overlaps the back sheet 50 in a region inside the outer edge 512 of the first back sheet 51 in the longitudinal direction L. The water absorbing sheet 70 overlaps both the first back sheet 51 and the second back sheet in a region inside the outer edge 522 of the second back sheet 52 in the longitudinal direction L. The water absorbent sheet 70 is overlapped with the back sheet 50 in the width direction W, in the area inside the outer edge of the first back sheet 51 or in the area inside the outer edge of the second back sheet 52. Since at least a part of the water absorbing sheet 70 overlaps the back sheet 50, the leakage of the body fluid absorbed by the water absorbing sheet 70 can be suppressed. Moreover, the user can grasp that at least a part of the water absorbing sheet 70 overlaps with the back sheet by the difference in color density of the water absorbing sheet 70 when viewed from the outside of the diaper. Therefore, it is easy to obtain a sense of security for the leakage of the body fluid absorbed by the water absorbing sheet 70.
　吸水シート７０は、バックシート５０の外端縁よりも長手方向Ｌの外側に延出した長手延出部７７を有してよい。図３において、長手延出部７７と後述する幅延出部７８に異なる斜線を付して示す。長手延出部７７は、第１バックシート５１の外端縁５１２と吸水シート７０の外端縁７０２との間の部分である。長手延出部７７は、バックシート５０よりも長手方向Ｌの外側に延出しており、バックシート５０を介さずにおむつの外側から視認され易くなる。また、吸水シート７０は、着色されており、おむつの外側から視認され易い。使用者は、長手延出部７７をおむつの外側から視認し、吸水シート７０の存在を認識し易い。吸水シートが着色部を有する構成にあっては、使用者は、吸収シート７０の着色部に基づいて吸収シートの存在を認識し易い。よって、使用者は、汗等の体液の吸収性に対する安心感を得ることができる。吸水シート７０が着色され、かつ吸水シート７０とバックシート５０が重なった領域と吸水シート７０とバックシート５０が重ならない領域とを備えるため、吸水シートの視認性と体液の漏れを両立できる。使用者は、漏れに対する安心感と吸収性に対する安心感の両方を得易くなる。 The water absorbent sheet 70 may have a longitudinally extending portion 77 extending outward in the longitudinal direction L than the outer edge of the back sheet 50. In FIG. 3, the longitudinally extending portions 77 and the width extending portions 78 described later are shown with different diagonal lines. The longitudinally extending portion 77 is a portion between the outer edge 512 of the first back sheet 51 and the outer edge 702 of the water absorbent sheet 70. The longitudinally extending portion 77 extends outward of the back sheet 50 in the longitudinal direction L, and is easily visible from the outside of the diaper without the back sheet 50. In addition, the water absorbent sheet 70 is colored and easily visible from the outside of the diaper. The user visually recognizes the longitudinally extending portion 77 from the outside of the diaper, and easily recognizes the presence of the water absorbing sheet 70. When the water-absorbent sheet has a colored part, the user can easily recognize the presence of the absorbent sheet based on the colored part of the absorbent sheet 70. Thus, the user can feel secure about the absorbability of body fluid such as sweat. Since the water absorbent sheet 70 is colored, and the area where the water absorbent sheet 70 and the back sheet 50 overlap and the area where the water absorbent sheet 70 and the back sheet 50 do not overlap, visibility of the water absorbent sheet and leakage of body fluid can be compatible. The user is likely to obtain both a sense of security for leaks and a sense of security for absorbency.
　図３に示すように、吸水シート７０とバックシート５０が重なる領域の長手方向Ｌの長さＬ２１は、長手延出部７７の長手方向Ｌの長さＬ２２よりも長くてよい。吸水シート７０とバックシート５０が重なる領域の長手方向Ｌの長さＬ２１は、第１バックシート５１の外端縁５１２と吸水シート７０の内端縁７０１との長手方向Ｌの距離である。長手延出部７７の長手方向Ｌの長さは、第１バックシート５１の外端縁５１２と吸水シート７０の外端縁７０２との長手方向Ｌの距離である。吸水シート７０とバックシート５０と重なる領域の方が長手延出部７７よりも長く、体液の漏れを抑制する効果を高めることができる。吸水シート７０は、着色されているため、他のシート等に対して目立ちやすい。よって、長手延出部７７の長さが短い場合であっても、使用者は、吸水シート７０の存在を把握し易く、吸収性に対する安心感を得ることができる。より好適には、長手延出部７７の長手方向Ｌの長さは、吸水シート７０の長手方向Ｌの全長に対する３０％未満であってよい。吸水シート７０は、長手方向Ｌにおいて吸水シート７０の全長に対する７０％以上の領域でバックシート５０に重なっており、体液の漏れを確保できる。よって、吸水シート７０の視認性と防漏性をより両立し易い。 As shown in FIG. 3, the length L21 of the longitudinal direction L of the area where the water absorbent sheet 70 and the back sheet 50 overlap may be longer than the length L22 of the longitudinal direction L of the longitudinally extending portion 77. The length L21 of the longitudinal direction L of the area where the water absorbent sheet 70 and the back sheet 50 overlap is the distance between the outer edge 512 of the first back sheet 51 and the inner edge 701 of the water absorbent sheet 70 in the longitudinal direction L. The length in the longitudinal direction L of the longitudinally extending portion 77 is the distance in the longitudinal direction L between the outer edge 512 of the first backsheet 51 and the outer edge 702 of the water absorbent sheet 70. The region overlapping the water absorbent sheet 70 and the back sheet 50 is longer than the longitudinally extending portion 77, and the effect of suppressing the leakage of the body fluid can be enhanced. Since the water absorbing sheet 70 is colored, it is easily noticeable with respect to other sheets and the like. Therefore, even when the length of the longitudinally extending portion 77 is short, the user can easily grasp the presence of the water absorbent sheet 70, and a sense of security with respect to absorbability can be obtained. More preferably, the length of the longitudinal direction L of the longitudinal extension 77 may be less than 30% of the entire length of the water absorbent sheet 70 in the longitudinal direction L. The water absorbing sheet 70 overlaps the back sheet 50 in a region of 70% or more of the entire length of the water absorbing sheet 70 in the longitudinal direction L, and leakage of body fluid can be secured. Therefore, the visibility and leakproofness of the water absorbing sheet 70 can be more compatible.
　吸水シート７０は、バックシート５０の外側縁よりも幅方向の外側に延出した幅延出部７８を有してよい。幅延出部７８は、第２バックシート５２の外端縁５２２よりも長手方向の外側においては、第１バックシート５１の外側縁と吸水シートの外側縁の間の部分であり、第２バックシート５２の外端縁５２２よりも長手方向の内側においては、第１バックシート５１の外側縁と第２バックシートの外側縁のうち幅方向の外側に位置する外側縁と吸水シートの外側縁の間の部分である。なお、第１バックシート５１の外側縁と第２バックシートの外側縁の幅方向の位置関係は限定されない。このように幅延出部７８が設けられていることにより、使用者は、バックシート５０よりも幅方向Ｗの外側に延出した吸水シート７０をおむつの外側から視認し、吸水シートの存在を認識し易い。よって、使用者は、吸収性に対する安心感を得ることができる。 The water absorbing sheet 70 may have a width extending portion 78 extending outward in the width direction than the outer edge of the back sheet 50. The width extension portion 78 is a portion between the outer edge of the first back sheet 51 and the outer edge of the water absorbent sheet on the outer side in the longitudinal direction than the outer edge 522 of the second back sheet 52, and the second back Inside the outer edge 522 of the sheet 52 in the longitudinal direction, of the outer edge of the first back sheet 51 and the outer edge of the second back sheet, the outer edge of the outer edge located outside the width direction and the outer edge of the water absorbent sheet It is a part between. The positional relationship between the outer edge of the first backsheet 51 and the outer edge of the second backsheet in the width direction is not limited. Thus, by providing the width extending part 78, the user visually recognizes from the outside of the diaper the water absorbent sheet 70 extended to the outside of the back sheet 50 in the width direction W, and the presence of the water absorbent sheet is recognized. Easy to recognize. Therefore, the user can obtain a sense of security for the absorbability.
　図３に示すように、幅延出部７８は、バックシートの外側縁と使い捨ておむつの外側縁との幅方向の中心ＣＬよりも幅方向の外側に延出してよい。幅延出部７８は、バックシート５０よりも幅方向Ｗの外側の領域うち幅方向の半分以上の領域に配置されている。使用者は、バックシートよりも幅方向の外側に延出した吸水シートをより視認し易くなる。より好ましくは、吸水シート７０は、使い捨ておむつの幅方向の全域に配置されていてよい。吸水シートが使い捨ておむつの幅方向の全域に配置されているため、使用者は、吸水シートをより視認し易くなる。使用者は、吸水シートの存在をより認識し易く、吸収性に対する安心感を得ることができる。 As shown in FIG. 3, the width extending portion 78 may extend outside in the width direction than the center CL in the width direction of the outer edge of the back sheet and the outer edge of the disposable diaper. The width extending portion 78 is disposed in a region of half or more in the width direction among regions in the width direction W outside the back sheet 50. It becomes easier for the user to visually recognize the water absorbent sheet extended outward in the width direction than the back sheet. More preferably, the water absorbing sheet 70 may be disposed in the entire width direction of the disposable diaper. Since the water-absorbent sheet is disposed in the entire width direction of the disposable diaper, the user can more easily view the water-absorbent sheet. The user can more easily recognize the presence of the water-absorbent sheet, and can obtain a sense of security for the absorbability.
　吸水シート７０の長手延出部７７及び幅延出部７８は、バックシートと重ならない非重畳領域を構成する。伸張状態において、非重畳領域の面積は、吸水シート全体の面積に対する６０％以上であることが好ましい。伸張状態において、吸水シートは、全体面積に対する６０％以上の領域でバックシートに重なってない。よって、吸水シート７０の視認性をより確保し易い。 The longitudinally extending portion 77 and the width extending portion 78 of the water absorbing sheet 70 constitute a non-overlapping region which does not overlap with the back sheet. In the stretched state, the area of the non-overlapping region is preferably 60% or more of the area of the entire water absorbent sheet. In the stretched state, the water absorbent sheet does not overlap the back sheet in an area of 60% or more of the entire area. Therefore, the visibility of the water absorbing sheet 70 can be more easily secured.
　厚さ方向の平面視にて、伸縮性部材３２は、長手延出部７７に重なり、かつ長手延出部７７の非肌対向面側に配置されてよい。自然状態の使い捨ておむつを非肌対向面側から視認した状態における長手延出部７７のL*a*b*色空間のＬ値は、８２以上であってよく、好ましくは、８５以上であってよい。長手延出部７７のL*a*b*色空間のＬ値は、吸水シート７０自体のＬ値ではなく、使い捨ておむつの非肌対向面側から測定した状態のＬ値である。自然状態の使い捨ておむつを非肌対向面側から視認した状態とは、使い捨ておむつの後胴回り域の非肌対向面が上になるように、相対湿度６０％±５％ＲＨの雰囲気下において２４時間放置して、おむつを視認した状態である。吸水シート７０の長手延出部７７は、第１外装不織布シート３５及び第２外装不織布シート３６を介して視認される。使用者は、おむつの外側から吸水シート７０を視認した際に長手延出部７７と共に伸縮性部材３２を視認することができる。このとき、伸縮性部材３２が目立ち過ぎると、伸縮性部材３２による違和感が生じるおそれがある。具体的には、伸縮性部材３２が目立ち過ぎると、伸縮性部材が強調され、伸縮性部材が目立たずに配置されているおむつと比較して違和感が生じたり、伸縮性が強調され過ぎ、肌に伸縮による跡がつき、肌に優しくないように感じたり、化学っぽく、肌に優しくないように感じたりするおそれがある。おむつの非肌対向面側から視認された状態における長手延出部のL*a*b*色空間のＬ値が８５以上であることにより、伸縮性部材３２が目立ち過ぎることを抑制でき、伸縮性部材３２よる違和感を抑制できる。より好ましくは、長手延出部７７のL*a*b*色空間のＬ値は、伸縮性部材３２のＬ値である９１．６以下であってよい。長手延出部７７に対して伸縮性部材３２をより目立ち難くできる。なお、長手延出部のＬ値は、測定対象について市販の測色器を用いて測色を行い、ＪＩＳ Ｚ 8729に規定されるＣＩＥ１９７６（L*a*b*）色空間に基づいて数値化した値によって求めることができる。 The stretchable member 32 may overlap the longitudinally extending portion 77 and may be disposed on the non-skin facing surface side of the longitudinally extending portion 77 in a plan view in the thickness direction. The L value of the L * a * b * color space of the longitudinally extending portion 77 in the state where the disposable diaper in the natural state is viewed from the non-skin facing surface side may be 82 or more, preferably 85 or more Good. The L value of the L * a * b * color space of the longitudinally extending portion 77 is not the L value of the water absorbent sheet 70 itself but the L value of the state measured from the non-skin facing surface side of the disposable diaper. The condition in which the disposable diaper in the natural state is viewed from the non-skin facing side is 24 hours under an atmosphere of relative humidity 60% ± 5% RH so that the non-skin facing surface of the back waist area of the disposable diaper is on top. It is in a state where it is left to visually recognize the diaper. The longitudinally extending portion 77 of the water absorbing sheet 70 is visually recognized through the first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36. The user can view the stretchable member 32 together with the longitudinally extending portion 77 when viewing the water absorbent sheet 70 from the outside of the diaper. At this time, if the stretchable member 32 is too noticeable, the stretchable member 32 may feel uncomfortable. Specifically, when the stretchable member 32 is too conspicuous, the stretchable member is emphasized, and a sense of discomfort is generated as compared with a diaper in which the stretchable member is disposed inconspicuously, or the stretchability is excessively emphasized, and the skin is There is a possibility that it may feel as if it is not gentle to the skin, or it may feel as if it is chemical or not gentle to the skin. When the L value of the L * a * b * color space of the longitudinally extending portion is 85 or more when viewed from the non-skin facing side of the diaper, the stretchable member 32 can be prevented from being too visible, Uncomfortable feeling by the sex member 32 can be suppressed. More preferably, the L value of the L * a * b * color space of the longitudinally extending portion 77 may be 91.6 or less, which is the L value of the stretchable member 32. The stretchable member 32 can be made less noticeable with respect to the longitudinally extending portion 77. The L value of the longitudinally extending portion is measured based on the CIE 1976 (L * a * b *) color space defined in JIS Z 8729 by performing color measurement on a measurement object using a commercially available colorimeter. It can be determined by the calculated value.
　好ましくは、吸水シート７０は、青基調であってよい。吸水シート７０が青基調であることにより、見た目が涼しげな印象となり、清涼感が向上する。また、伸縮性部材３２は、白基調であってよい。伸縮性部材３２が白基調であることにより、吸水シート７０に対して目立ち難くなり、より違和感を抑制し易い。なお、白基調とは、（L*a*b*）色空間のＬ値が９０.０以上であり、青基調とは、（L*a*b*）色空間のｂ値が０以下、かつａ値が２０以下である。 Preferably, the water absorbing sheet 70 may be blue-based. The blue-based appearance of the water-absorbent sheet 70 makes it look cool and improves the refreshing feeling. In addition, the elastic member 32 may be white. When the stretchable member 32 is white, it becomes difficult to be noticeable with respect to the water absorbent sheet 70, and it is easier to suppress discomfort. Note that the white tone means that the L value of the (L * a * b *) color space is 90.0 or more, and the blue tone means that the b value of the (L * a * b *) color space is 0 or less, And a value is 20 or less.
　次いで、このように構成された吸水シートの違和感の評価について説明する。実施例１～５及び比較例１～２の自然状態の使い捨ておむつを、普段から使い捨ておむつを使用している１０人の被験者に視認してもらい、伸縮性部材の違和感について、以下の評価基準に従ってアンケートを実施した。評価における使い捨ておむつの（L*a*b*）は、自然状態の使い捨ておむつの非肌対向面側から測定した長手延出部の値である。本評価における伸縮性部材３２の（L*a*b*）色空間のＬ値は、９１．６であり、ａ値は、－０．６２であり、ｂ値は、－１．８１である。
（判定基準）
　良：伸縮性部材を認識できない。または、伸縮性部材を認識できるが、違和感が生じない。
　不良：　伸縮性部材を認識でき、違和感が生じる。
　アンケート結果から３０人の被験者のうち、８０％以上の被験者の結果が「良」であるおむつを総合評価◎とし、６０％以上の被験者の結果が「良」であるおむつを総合評価○とし、６０％未満の被験者の結果が「良」であるおむつを総合評価×とした。 Next, the evaluation of the discomfort of the water absorbent sheet configured as described above will be described. The natural disposable diapers of Examples 1 to 5 and Comparative Examples 1 to 2 are visually recognized by 10 subjects who usually use the disposable diapers, and regarding the discomfort of the stretchable member according to the following evaluation criteria We conducted a questionnaire. (L * a * b *) of the disposable diaper in evaluation is a value of the longitudinally extending part measured from the non-skin opposing surface side of the disposable diaper of a natural state. The L value of the (L * a * b *) color space of the elastic member 32 in this evaluation is 91.6, the a value is −0.62, and the b value is −1.81. .
(Judgment criteria)
Good: The stretchable member can not be recognized. Or although an elastic member can be recognized, discomfort does not arise.
Poor: The stretchable member can be recognized, and a sense of discomfort is generated.
According to the questionnaire results, out of 30 subjects, the result of 80% or more of the subjects is "good", the overall evaluation ◎, and the result of 60% or more of the subjects is "good", the overall evaluation of ○ A diaper with a result of “less than 60%” subject being “good” was regarded as comprehensive evaluation x.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
  表１に示すように、実施例１から５の使い捨ておむつは、伸縮性部材による違和感が生じ難い。よって、長手延出部７７のＬ値は、８２以上であることが好ましい。また、実施例１から４の使い捨ておむつによれば、８割以上の使用者が違和感を生じ難いことがわかった。よって、より好ましくは、長手延出部７７のＬ値は、８５以上であってよい。 As shown in Table 1, the disposable diapers of Examples 1 to 5 are unlikely to cause discomfort due to the stretchable member. Therefore, the L value of the longitudinally extending portion 77 is preferably 82 or more. Moreover, according to the disposable diaper of Example 1-4, it turned out that 80% or more of users are hard to produce discomfort. Therefore, more preferably, the L value of the longitudinally extending portion 77 may be 85 or more.
　次いで、このように構成された使い捨ておむつのサイド接合部近傍における前胴回り域Ｓ１と後胴回り域Ｓ２の接合について、図６から図８を参照して説明する。図６は、図１に示すＣ－Ｃ断面、図７は、図１に示すＤ－Ｄ断面、図８は、図１に示すＥ－Ｅ断面を示している。図６及び図７は、吸水シート７０が配置された領域の断面であり、図８は、吸水シート７０が配置されてない領域の断面である。 Next, bonding of the front waistline region S1 and the rear waistline region S2 in the vicinity of the side joint portion of the disposable diaper configured as described above will be described with reference to FIGS. 6 to 8. 6 shows a CC cross section shown in FIG. 1, FIG. 7 shows a DD cross section shown in FIG. 1, and FIG. 8 shows an EE cross section shown in FIG. 6 and 7 are cross sections of the area where the water absorbing sheet 70 is disposed, and FIG. 8 is a cross section of the area where the water absorbing sheet 70 is not disposed.
　使い捨ておむつ１０には、第２胴回り域である前胴回り域Ｓ１と吸水シート７０の延出部７５とが接合されていない非接合部ＮＲが設けられている。非接合部ＮＲは、パンツ型の状態において、延出部７５における前胴回り域Ｓ１側の面と、前胴回り部材２０における後胴回り域Ｓ２側の面と、が接合されていない領域である。非接合部ＮＲは、延出部７５の外側縁から幅方向Ｗの内側に向かう領域に設けられていてよく、延出部７５の外側縁からサイド接合部６０まで連続していてもよい。非接合部ＮＲの外側縁は、延出部７５の外側縁、すなわち吸水シート７０の外側縁７０Ｅである。非接合部ＮＲの内側縁は、サイド接合部６０に隣接していてもよいし、サイド接合部６０と幅方向Ｗにおいて離間していてもよい。 The disposable diaper 10 is provided with a non-joining portion NR in which the front waistline region S1 which is the second waistline region and the extension portion 75 of the water absorbent sheet 70 are not joined. The non-joining portion NR is a region where the surface of the extension portion 75 on the front waist region S1 side and the surface of the front waist member 20 on the rear waist region S2 side are not joined in the pants-type state. The non-joining portion NR may be provided in a region extending inward in the width direction W from the outer edge of the extending portion 75, and may be continuous from the outer edge of the extending portion 75 to the side joint 60. The outer edge of the non-joining portion NR is the outer edge of the extension 75, that is, the outer edge 70E of the water absorbent sheet 70. The inner edge of the non-bonding portion NR may be adjacent to the side bonding portion 60 or may be separated from the side bonding portion 60 in the width direction W.
　延出部７５の外側縁から幅方向Ｗの内側に向かう領域では、延出部７５は、前胴回り域Ｓ１と接合されていない。よって、延出部７５の外側縁から幅方向Ｗの内側に向かう領域では、延出部７５が前胴回り域Ｓ１から離間し、おむつの外側から視認され易くなる。特に、図６のＣ－Ｃ断面に示すように、吸水シート７０が第１外装不織布シート３５の折り返し部３５Ｆによって覆われていない領域では、延出部７５が露出し、おむつの外側から視認され易くなる。また、吸水シート７０が着色されているため、使用者は、吸水シート７０を認識し易い。使用者は、吸水シート７０の延出部７５によって吸水シート７０の存在を認識し易い。使用者は、吸収コアとは別に、体液を吸収可能な吸水シート７０が配置されていることを認識でき、汗等の体液の吸収性に対する安心感を得ることができる。また、使用者は、吸水シート７０の延出部７５を目印として使い捨ておむつの幅方向の外側縁を認識でき、装着時に使い捨ておむつの幅方向のずれを把握し易くなる。よって、使用者は、体に対して適した位置に使い捨ておむつを装着できる。 In the region from the outer edge of the extension 75 toward the inside in the width direction W, the extension 75 is not joined to the front waist area S1. Therefore, in the area | region which goes to the inner side of the width direction W from the outer side edge of the extension part 75, the extension part 75 spaces apart from front waist area S1, and it becomes easy to be visually recognized from the outer side of a diaper. In particular, as shown in the C-C cross section of FIG. 6, in the area where the water absorbing sheet 70 is not covered by the folded portion 35F of the first exterior nonwoven fabric sheet 35, the extending portion 75 is exposed and viewed from the outside of the diaper. It will be easier. Further, since the water absorbent sheet 70 is colored, the user can easily recognize the water absorbent sheet 70. The user can easily recognize the presence of the water absorbing sheet 70 by the extended portion 75 of the water absorbing sheet 70. The user can recognize that the water absorbing sheet 70 capable of absorbing the body fluid is disposed separately from the absorbent core, and a sense of security with respect to the absorbability of the body fluid such as sweat can be obtained. Further, the user can recognize the outer edge in the width direction of the disposable diaper by using the extension portion 75 of the water absorbing sheet 70 as a mark, and can easily grasp the shift in the width direction of the disposable diaper at the time of wearing. Thus, the user can wear the disposable diaper at a suitable position relative to the body.
　また、第２胴回り域を構成する前胴回り域Ｓ１の幅方向Ｗの収縮力は、第１胴回り域を構成する後胴回り域Ｓ２の幅方向Ｗの収縮力よりも高くてよい。前胴回り域Ｓ１が後胴回り域Ｓ２よりも幅方向に収縮し易いため、装着状態で後胴回り域Ｓ２の外側縁が前胴回り域Ｓ１側に引っ張られる。よって、吸水シート７０の延出部７５は、前側に引き寄せられ、正面から視認した際により目立ち易くなる。すなわち、延出部７５は、装着者の身体の側部ではなく前側又は後側に偏倚しており、側部に配置されている構成と比較して目立ち易い。使用者は、吸水シート７０の延出部７５をより認識し易く、体液の吸収性に対する安心感をより得易い。使用者が延出部７５を認識し易い効果を得るために、延出部７５の幅方向Ｗの長さは、５ｍｍ以上であることが好ましい。 The contraction force in the width direction W of the front waist area S1 constituting the second waist area may be higher than the contraction force in the width direction W of the rear waist area S2 constituting the first waist area. Since the front waist area S1 is more easily contracted in the width direction than the rear waist area S2, the outer edge of the rear waist area S2 is pulled toward the front waist area S1 in the mounted state. Therefore, the extension part 75 of the water absorbing sheet 70 is drawn to the front side and becomes more noticeable when viewed from the front. That is, the extension portion 75 is biased to the front side or the rear side, not to the side of the wearer's body, and is conspicuous in comparison with the configuration disposed on the side. The user can more easily recognize the extension portion 75 of the water absorbing sheet 70, and can easily obtain a sense of security with respect to the absorbability of the body fluid. In order to obtain the effect that the user can easily recognize the extension portion 75, the length in the width direction W of the extension portion 75 is preferably 5 mm or more.
　このように構成された使い捨ておむつを製造する場合は、例えば、以下の製造方法によって製造できる。まず、前胴回り部材が幅方向に連続した前連続体と、後胴回り部材が幅方向に連続した後連続体と、をそれぞれ搬送し、この前連続体と後連続体に跨るように、吸収性本体４０等の構成部材を配置する。次いで、前連続体と後連続体が重なるように、幅方向に延びる折り線を基点に当該連続体及び吸収性本体を折り畳む。そして、サイド接合部を形成し、前胴回り域の外側縁及び後胴回り域の外側縁に沿って連続体を切断する。これにより、パンツ型の使い捨ておむつを得ることができる。 When manufacturing the disposable diaper comprised in this way, it can manufacture by the following manufacturing methods, for example. First, the front waist member continuous in the width direction, and the rear waist member continuous in the width direction respectively convey the continuous body, and it is absorbent so that the front continuous body and the rear continuous body are straddled. The constituent members such as the main body 40 are arranged. Next, the continuum and the absorbent main body are folded on the basis of a fold line extending in the width direction such that the front continuum and the back continuum overlap. Then, the side joints are formed, and the continuum is cut along the outer edge of the front waist region and the outer edge of the rear waist region. Thereby, a pants-type disposable diaper can be obtained.
　前連続体及び後連続体を切断する際は、前連続体と後連続体を重ねた状態でカッター等の切断装置によって切断する。よって、切断時に前連続体と後連続体が溶着し、サイド接合部よりも幅方向の外側に前連続体（前胴回り域）と後連続体（後胴回り域）とが接合された第２サイド接合部６１が形成される（図１及び図８参照）。このとき、パルプ繊維を含むパルプシート７１と外装不織布シートは接合し難く、外装不織布シート同士は接合し易い。よって、図６及び図７に示すように、パルプシート７１を有する吸水シート７０が配置された領域では、切断による第２サイド接合部６１が形成されない。一方、図８に示すように、吸水シート７０が配置されてない領域では、切断による第２サイド接合部６１が形成される。 When cutting the front continuum and the rear continuum, the front continuum and the rear continuum are cut by a cutting device such as a cutter in a stacked state. Therefore, the second side in which the front continuum and the rear continuum are welded at the time of cutting, and the front continuum (front waist area) and the rear continuum (rear waist area) are joined outside the side joint in the width direction The joint 61 is formed (see FIGS. 1 and 8). At this time, it is difficult to bond the pulp sheet 71 containing pulp fibers and the exterior nonwoven fabric sheet, and the exterior nonwoven fabric sheets are easily joined to each other. Therefore, as shown in FIGS. 6 and 7, the second side joint portion 61 is not formed by cutting in the region where the water absorbing sheet 70 having the pulp sheet 71 is disposed. On the other hand, as shown in FIG. 8, in the area where the water absorbing sheet 70 is not disposed, the second side joint portion 61 is formed by cutting.
　吸水シート７０よりも長手方向Ｌの外側の領域及び内側の領域では、第２サイド接合部６１が形成されてよい。第２サイド接合部６１は、サイド接合部６０よりも幅方向Ｗの外側において、前胴回り域Ｓ１と後胴回り域Ｓ２が接合された部分である。第２サイド接合部６１は、サイド接合部６０に対して幅方向Ｗに離間してよい。この構成によれば、吸水シート７０よりも長手方向Ｌの外側の領域では、サイド接合部６０と、第２サイド接合部６１と、が設けられている。吸水シートよりも長手方向の外側の領域では、おむつの外側から第１胴回り域と第２胴回り域の間に指などが入り難く、第２サイド接合部６１によってサイド接合部６０の接合状態を保護できる。よって、使用中にサイド接合部６０の接合が意図せず破れることを抑制できる。 The second side bonding portion 61 may be formed in the region outside and inside the longitudinal direction L of the water absorbent sheet 70. The second side joint portion 61 is a portion where the front waistline region S1 and the rear waistline region S2 are joined on the outer side in the width direction W than the side joint portion 60. The second side joint portion 61 may be separated from the side joint portion 60 in the width direction W. According to this configuration, the side joint portion 60 and the second side joint portion 61 are provided in the region outside the water absorbing sheet 70 in the longitudinal direction L. In the region outside the absorbent sheet in the longitudinal direction, it is difficult for a finger or the like to enter between the first waist area and the second waist area from the outside of the diaper, and the second side bonding portion 61 protects the bonding state of the side bonding portion 60. it can. Therefore, it is possible to prevent the junction of the side junction 60 from being unintentionally broken during use.
　不織布シートは、サイド接合部６０が設けられた領域においてパルプシート７１よりも厚さ方向における第１胴回り域側に配置された第１側不織布シートと、サイド接合部６０が設けられた領域においてパルプシート７１よりも厚さ方向における第２胴回り域側に配置された第２側不織布シートと、を有する。図６に示す領域では、第１側不織布シートは、吸水不織布シート７２、後胴回り域Ｓ２における第１外装不織布シート３５及び後胴回り域Ｓ２における第２外装不織布シート３６によって構成され、第２側不織布シートは、吸水不織布シート７２、前胴回り域Ｓ１における第１外装不織布シート３５及び前胴回り域Ｓ１における第２外装不織布シート３６によって構成される。図７に示す領域では、第１側不織布シートは、吸水不織布シート７２、前胴回り域Ｓ１における１枚の第１外装不織布シート３５、後胴回り域Ｓ２における２枚の第１外装不織布シート３５及び後胴回り域Ｓ２における第２外装不織布シート３６によって構成される。図７に示す領域では、第２側不織布シートは、吸水不織布シート７２、前胴回り域Ｓ１における第１外装不織布シート３５及び前胴回り域Ｓ１における第２外装不織布シート３６によって構成される。なお、吸水シート７０が吸水不織布シートを有しない構成にあっては、第１側不織布シート及び第２側不織布シートは、第１外装不織布シート及び第２外装不織布シートの少なくともいずれか一方によって構成されてよい。 In the non-woven fabric sheet, the first non-woven fabric sheet disposed on the first waist side in the thickness direction than the pulp sheet 71 in the region in which the side bonding portion 60 is provided, and the pulp in the region in which the side bonding portion 60 is provided And a second non-woven fabric sheet disposed closer to the second waist area in the thickness direction than the sheet 71. In the area shown in FIG. 6, the first side nonwoven fabric sheet is constituted by the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35 in the back waist area S2, and the second exterior nonwoven fabric sheet 36 in the back waist area S2. The sheet is constituted of a water absorbent nonwoven sheet 72, a first exterior nonwoven sheet 35 in the front waist area S1, and a second exterior nonwoven sheet 36 in the front waist area S1. In the area shown in FIG. 7, the first non-woven fabric sheet comprises a water-absorbent non-woven sheet 72, a single first exterior non-woven sheet 35 in the front waist area S1, two first exterior non-woven sheets 35 in the rear waist area S2 and a rear It is comprised by the 2nd exterior nonwoven fabric sheet 36 in waist area S2. In the area shown in FIG. 7, the second side nonwoven fabric sheet is constituted by the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35 in the front waist area S1, and the second exterior nonwoven fabric sheet 36 in the front waist area S1. When the water absorbing sheet 70 does not have the water absorbing nonwoven sheet, the first side nonwoven sheet and the second side nonwoven sheet are formed of at least one of the first exterior nonwoven sheet and the second exterior nonwoven sheet. You may
　第１側不織布シートの坪量及び第１側不織布シートの坪量は、パルプシート７１の坪量よりも高くてよい。第１側不織布シートの坪量は、第１側不織布シートを構成する不織布シートの合計坪量である。第２側不織布シートの坪量は、第２側不織布シートを構成する不織布シートの合計坪量である。第１側不織布シートの坪量及び第２側不織布シートの坪量が比較的高いため、切断時の不織布シート同士の接合による第２サイド接合部６１が形成され易く、また第２サイド接合部６１の接合状態を維持し易い。パルプシート７１による体液の吸収性を発揮しつつ、前胴回り域Ｓ１の外側縁と後胴回り域の外側縁の接合状態を維持し易くなる。 The basis weight of the first non-woven fabric sheet and the basis weight of the first non-woven fabric sheet may be higher than the basis weight of the pulp sheet 71. The basis weight of the first side nonwoven fabric sheet is the total basis weight of the nonwoven fabric sheets constituting the first side nonwoven fabric sheet. The basis weight of the second side nonwoven fabric sheet is the total basis weight of the nonwoven fabric sheets constituting the second side nonwoven fabric sheet. Because the basis weight of the first non-woven fabric sheet and the basis weight of the second non-woven fabric sheet are relatively high, the second side bonding portion 61 is easily formed by bonding the non-woven fabric sheets at the time of cutting. It is easy to maintain the bonding state of It becomes easy to maintain the joined state of the outer edge of the front waist area S1 and the outer edge of the rear waist area while exhibiting the absorbability of the body fluid by the pulp sheet 71.
　サイド接合部６０は、熱溶着等によっておむつの非肌対向面側Ｔ２の面から形成される。サイド接合部６０が形成されることによって、不織布等の熱可塑性繊維が溶着する。このとき、パルプシート７１は、パルプ繊維を有し、不織布と比較して溶着し難い。よって、サイド接合部６０においてパルプシート７１と重ならない部分の接合強度は、サイド接合部においてパルプシート７１と重なる部分の接合強度よりも高い。サイド接合部６０においてパルプシート７１と重ならない部分は、吸水シート７０よりも長手方向の外側に位置する部分と吸水シート７０よりも長手方向の内側に位置する部分である。図６等に示すように、サイド接合部６０が形成された領域では、厚さ方向Ｔにおいてパルプシート７１と吸水不織布シート７２、第１外装不織布シート３５及び第２外装不織布シート３６が重なっている。 The side joint portion 60 is formed from the surface of the non-skin facing surface T2 of the diaper by heat welding or the like. By forming the side joints 60, thermoplastic fibers such as non-woven fabric are welded. At this time, the pulp sheet 71 has pulp fibers and is difficult to weld as compared with the non-woven fabric. Therefore, the bonding strength of the portion not overlapping with the pulp sheet 71 in the side bonding portion 60 is higher than the bonding strength of the portion overlapping with the pulp sheet 71 in the side bonding portion. The portions not overlapping with the pulp sheet 71 in the side joint portion 60 are a portion located on the outer side in the longitudinal direction than the water absorbing sheet 70 and a portion located on the inner side in the longitudinal direction than the water absorbing sheet 70. As shown in FIG. 6 etc., the pulp sheet 71 and the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35, and the second exterior nonwoven fabric sheet 36 overlap in the thickness direction T in the region where the side joints 60 are formed. .
　吸水シート７０は、後胴回り域Ｓ２に配置され、後胴回り域Ｓ２に接着剤等によって接合されている。よって、サイド接合部６０が形成された状態において、パルプシート７１よりも厚さ方向Ｔにおける後胴回り域Ｓ２側では、吸水シート７０と他のシートの接合状態が維持され易い。一方、パルプシート７１よりも厚さ方向Ｔにおける前胴回り域Ｓ１側では、吸水シート７０と他のシートの接合状態が維持され難いおそれがある。吸水シート７０と前胴回り域Ｓ１の接合状態を維持するために、パルプシート７１の坪量は、パルプシート７１よりも第２胴回り域側に配置された第２側不織布シートの坪量よりも低いことが好ましい。パルプシート７１の坪量が第２側不織布シートの坪量よりも低いため、当該第２側不織布シートよってサイド接合部６０の接合状態を維持し、使用中に意図せずにサイド接合部６０が破れることを抑制できる。 The water absorbing sheet 70 is disposed in the back waist area S2, and is bonded to the back waist area S2 by an adhesive or the like. Therefore, in the state in which the side joint portion 60 is formed, the joined state of the water absorbent sheet 70 and the other sheets is likely to be maintained on the rear waist region S2 side in the thickness direction T than the pulp sheet 71. On the other hand, on the front waistline region S1 side in the thickness direction T more than the pulp sheet 71, there is a possibility that the joined state of the water absorbing sheet 70 and other sheets may not be maintained. The basis weight of the pulp sheet 71 is lower than the basis weight of the second non-woven fabric sheet disposed closer to the second waist region than the pulp sheet 71 in order to maintain the bonded state of the water absorbing sheet 70 and the front waist region S1. Is preferred. Since the basis weight of the pulp sheet 71 is lower than the basis weight of the second non-woven fabric sheet, the second non-woven fabric sheet maintains the bonding state of the side bonding portion 60, and the side bonding portion 60 is unintentionally used during use. It can control torn.
　図２に示すように、吸水シート７０の外端縁７０２とサイド接合部６０の外端縁６０２との距離Ｌ１は、吸水シート７０の内端縁７０１とサイド接合部６０の内端縁６０１との距離Ｌ２よりも短くてよい。使い捨ておむつを着用者から外す際は、一般的にサイド接合部６０の外端縁６０２から長手方向Ｌの内側に向かってサイド接合部６０を破る。このとき、使用者は、吸水シート７０よりも長手方向Ｌの外側の領域では、サイド接合部の強度が比較的高く、吸水シート７０が配置された領域では、サイド接合部６０の強度が比較的低い。吸水シート７０の外端縁７０２とサイド接合部６０の外端縁６０２との距離Ｌ１が吸水シート７０の内端縁７０１とサイド接合部６０の内端縁６０１との距離よりも短いため、サイド接合部の長手方向の外端縁から長手方向の内側に向かってサイド接合部を破る際に、直ぐに破り易い領域に到達できる。よって、使用者は、サイド接合部６０を容易に破り易くなる。 As shown in FIG. 2, the distance L 1 between the outer edge 702 of the water absorbent sheet 70 and the outer edge 602 of the side joint 60 is the inner edge 701 of the water absorbent sheet 70 and the inner edge 601 of the side joint 60. It may be shorter than the distance L2. When removing the disposable diaper from the wearer, the side joint 60 is generally broken inward in the longitudinal direction L from the outer edge 602 of the side joint 60. At this time, in the region outside the water absorption sheet 70 in the longitudinal direction L, the user has a relatively high strength at the side joints, and in the area where the water absorption sheet 70 is disposed, the side joints 60 have a relatively high strength. Low. The distance L1 between the outer edge 702 of the water-absorbent sheet 70 and the outer edge 602 of the side joint 60 is shorter than the distance between the inner edge 701 of the water-absorbent sheet 70 and the inner edge 601 of the side joint 60. When breaking the side joint from the longitudinal outer edge of the joint inward in the longitudinal direction, it is possible to reach the area that is easy to break immediately. Thus, the user can easily break the side joint 60.
　また、使い捨ておむつ１０は、吸水シート７０が肌に密着し易いように構成されている。吸水シート７０が肌に密着することにより、汗等の体液の吸収性を向上できる。次いで、吸水シート７０を肌に密着させ易くするための構成について、詳細に説明する。 Moreover, the disposable diaper 10 is comprised so that the water absorption sheet 70 may adhere easily to skin. When the water absorbing sheet 70 is in close contact with the skin, the absorbability of body fluid such as sweat can be improved. Next, the configuration for facilitating the water-absorbent sheet 70 to be in close contact with the skin will be described in detail.
　第１領域Ｒ１の幅方向Ｗの収縮力は、第２領域Ｒ２の幅方向の収縮力よりも低くてよい。装着状態では、図２等に示す伸張状態と比較して第１領域Ｒ１及び第２領域Ｒ２が幅方向Ｗに収縮し、第１領域Ｒ１が第２領域Ｒ２側に引っ張られる。第１領域Ｒ１に形成される皺が第２領域Ｒ２と比較して少なくなり、第１領域Ｒ１と肌の接着面積が増える。よって、吸水シート７０が肌に密着し、汗等の体液の吸収性を向上できる。 The contraction force in the width direction W of the first region R1 may be lower than the contraction force in the width direction of the second region R2. In the mounted state, the first area R1 and the second area R2 contract in the width direction W, and the first area R1 is pulled to the second area R2 side, as compared with the expanded state shown in FIG. The wrinkles formed in the first region R1 are smaller than those in the second region R2, and the bonding area between the first region R1 and the skin is increased. Therefore, the water absorbing sheet 70 can be in close contact with the skin, and the absorbability of body fluid such as sweat can be improved.
　また、後胴回り域Ｓ２の幅方向Ｗの収縮力は前胴回り域Ｓ１の幅方向の収縮力よりも低くてよい。装着状態において、後胴回り域Ｓ２が前胴回り域Ｓ１側に引っ張られる。後胴回り域Ｓ２に形成される皺が少なくなり、後胴回り域Ｓ２が肌に密着し易くなる。よって、吸水シート７０が肌に密着し、吸収性を向上できる。 Further, the contraction force in the width direction W of the rear waist region S2 may be lower than the contraction force in the width direction of the front waist region S1. In the mounted state, the rear waist area S2 is pulled toward the front waist area S1. The wrinkles formed in the back waist area S2 decrease, and the back waist area S2 easily adheres to the skin. Therefore, the water absorbing sheet 70 is in close contact with the skin, and the absorbability can be improved.
　なお、本発明における装着状態は、サイド接合部６０を介して前胴回り域Ｓ１と後胴回り域Ｓ２が幅方向Ｗに連続した使い捨ておむつを、伸張状態に対して７７％となるように筒体１００に装着した状態とする。図９は、伸張状態に対して７７％となるように筒体１００に装着した状態を模式的に示した図である。図９は、筒体１００の中心軸の延長線上から視認した使い捨ておむつ及び筒体を視認した状態である。伸張状態に対して７７％となるように筒体１００に装着した状態は、次の状態である。前胴回り域Ｓ１と後胴回り域Ｓ２の皺がなくなるように前胴回り域Ｓ１と後胴回り域Ｓ２を幅方向Ｗに伸張させ、前胴回り域Ｓ１のサイド接合部６０間の長さ（左側のサイド接合部の内側縁と右側のサイド接合部の内側縁との長さ）Ｌ３１（図２参照）と、後胴回り域Ｓ２のサイド接合部６０間の長さＬ３２と、を測定する。前胴回り域Ｓ１のサイド接合部６０間の長さＬ３１と、後胴回り域Ｓ２のサイド接合部６０間の長さＬ３２と、の合計を筒体１００に装着した使い捨ておむつ１０の伸張状態における長さとする。次いで、この伸張状態の長さに対して７７％の長さの外周長を有する筒体１００に、使い捨ておむつ１０を装着する。この状態を、伸張状態に対して７７％となるように筒体１００に装着した状態とする。なお、筒体１００の長手方向Ｌの長さは、少なくともサイド接合部６０の長手方向の長さ以上有する。また、筒体１００の表面素材は、シリコンPETセパレーター(ニッパ株式会社、PET38*1-B、C70905-13)を用いることができ、その摩擦係数は、１μｓ未満であってよい。なお、摩擦係数は、静摩擦係数であり、ポータブル摩擦計ミューズ（HEIDON、日進機械株式会社)を用いて、測定素子を筒体の表面に当てることによって測定できる。５～１０カ所にて測定し、その平均値を摩擦係数とする。 In addition, the mounting state in the present invention is the cylindrical body 100 so that the disposable diaper in which the front waist area S1 and the rear waist area S2 are continuous in the width direction W via the side joint portion 60 is 77% of the stretched state. It is in the state of wearing it. FIG. 9 is a view schematically showing a state of being attached to the cylindrical body 100 so as to be 77% of the stretched state. FIG. 9: is the state which visually recognized the disposable diaper and the cylinder visually recognized from the extension of the central axis of the cylinder 100. As shown in FIG. The state of being attached to the cylindrical body 100 so as to be 77% of the stretched state is the following state. The front waist area S1 and the rear waist area S2 are extended in the width direction W so that a gap between the front waist area S1 and the rear waist area S2 is eliminated, and the length between the side joints 60 of the front waist area S1 The length L32 between the inner edge of the part and the inner edge of the right side joint) L31 (see FIG. 2) and the side joint 60 of the rear waist region S2 is measured. The total length of the length L31 between the side joints 60 of the front waist area S1 and the length L32 between the side joints 60 of the back waist area S2 is the length in the stretched state of the disposable diaper 10 attached to the cylinder 100 Do. Next, the disposable diaper 10 is attached to the cylindrical body 100 having an outer peripheral length of 77% of the length in the stretched state. This state is a state of being attached to the cylindrical body 100 so as to be 77% of the stretched state. The length in the longitudinal direction L of the cylindrical body 100 is at least the length in the longitudinal direction of the side joint portion 60. In addition, a silicon PET separator (Nippa Co., Ltd., PET 38 * 1-B, C70905-13) can be used as the surface material of the cylindrical body 100, and the friction coefficient thereof may be less than 1 μs. The coefficient of friction is a coefficient of static friction, and can be measured by applying a measuring element to the surface of a cylindrical body using a portable friction meter Muse (HEIDON, Nippon Steel Machinery Co., Ltd.). Measure at 5 to 10 locations and use the average value as the coefficient of friction.
　伸張状態に対して７７％となるように筒体に装着した状態において、前胴回り域Ｓ１のサイド接合部６０間の長さＬ４１（図９参照）は、後胴回り域Ｓ２のサイド接合部６０間の長さＬ４２よりも短くてよい。使い捨ておむつを設計する際に、伸張状態の幅方向の長さに対して７７％の胴回り寸法は、装着状態における着用者の胴回り寸法に含まれるものと仮定して設計する。装着状態における前胴回り域Ｓ１のサイド接合部６０間の長さＬ４１に対する後胴回り域Ｓ２のサイド接合部６０間の長さＬ４２の比率は、伸張状態における前胴回り域Ｓ１のサイド接合部６０間の長さＬ３１に対する後胴回り域Ｓ２のサイド接合部６０間の長さＬ３２の比率よりも高い。 The length L41 (see FIG. 9) between the side joints 60 of the front waist area S1 is between the side joints 60 of the rear waist area S2 in a state of being attached to the cylinder so as to be 77% of the stretched state. It may be shorter than the length L42. In designing the disposable diaper, the girth of 77% with respect to the length in the width direction in the stretched state is designed assuming that it is included in the girth of the wearer in the wearing state. The ratio of the length L42 between the side joints 60 of the rear waist area S2 to the length L41 between the side joints 60 of the front waist area S1 in the mounted state is the distance between the side joints 60 of the front waist area S1 in the stretched state. It is higher than the ratio of the length L32 between the side joints 60 of the rear waist region S2 to the length L31.
　本実施の形態では、伸張状態における前胴回り域Ｓ１のサイド接合部６０間の長さＬ３１と、伸張状態における後胴回り域Ｓ２のサイド接合部６０間の長さＬ３２と、は、図２に示すように同じである。よって、伸張状態における前胴回り域Ｓ１のサイド接合部６０間の長さに対す後胴回り域Ｓ２のサイド接合部６０間の長さの比率は、１．０である。また、図９に示すように、装着状態においてサイド接合部６０が前胴回り域Ｓ１側に偏倚している。装着状態における後胴回り域Ｓ２のサイド接合部６０間の長さＬ４２は、装着状態における前胴回り域Ｓ１のサイド接合部６０間の長さＬ４１よりも長い。よって、装着状態における前胴回り域Ｓ１のサイド接合部６０間の長さＬ４１に対する後胴回り域Ｓ２のサイド接合部６０間の長さＬ４２の比率は、１．０よりも大きい。このように、装着状態においてサイド接合部６０が前胴回り域Ｓ１側に偏倚しているため、後胴回り域Ｓ２は、前胴回り域Ｓ１よりも皺が少なく、肌に密着し易い。よって、吸水シート７０が肌に密着し、汗等の体液の吸収性を向上できる。また、伸張状態に対して７７％となるように筒体に装着した状態において、吸水シート７０の延出部７５が前胴回り域Ｓ１側に偏倚している。よって、装着状態において延出部７５が身体の前側から視認され易くなる。 In the present embodiment, the length L31 between the side joints 60 of the front waist area S1 in the stretched state and the length L32 between the side joints 60 of the rear waist area S2 in the stretched state are shown in FIG. As it is the same. Therefore, the ratio of the length between the side joints 60 of the back waist area S2 to the length between the side joints 60 of the front waist area S1 in the stretched state is 1.0. Further, as shown in FIG. 9, the side joint portion 60 is biased toward the front waist area S1 in the mounted state. The length L42 between the side joints 60 in the rear waist area S2 in the mounted state is longer than the length L41 between the side joints 60 in the front waist area S1 in the mounted state. Therefore, the ratio of the length L42 between the side joints 60 of the rear waist area S2 to the length L41 between the side joints 60 of the front waist area S1 in the mounted state is larger than 1.0. As described above, since the side joint portion 60 is biased toward the front waistline region S1 in the mounted state, the back waistline region S2 has less wrinkles than the front waistline region S1 and is easily adhered to the skin. Therefore, the water absorbing sheet 70 can be in close contact with the skin, and the absorbability of body fluid such as sweat can be improved. In addition, in the state of being attached to the cylinder so as to be 77% of the stretched state, the extension portion 75 of the water absorbent sheet 70 is biased to the front waist area S1 side. Therefore, in the wearing state, the extension portion 75 can be easily viewed from the front side of the body.
　吸水シート７０が配置された領域の幅方向の収縮力は、その長手方向の外側に位置する領域の収縮力よりも高くてよい。図４に示すように、吸水シート７０の長手方向Ｌの外端縁７０２から長手方向Ｌの外側に延びる領域を外側領域Ｒ４とし、吸水シート７０の長手方向Ｌの内端縁７０１から長手方向Ｌの内側に延びる内側領域Ｒ３とする。吸水シート７０が配置された領域の幅方向の収縮力は、外側領域Ｒ４と内側領域Ｒ３の少なくとも一方の幅方向Ｗの収縮力よりも高くてよい。なお、吸水シート７０が配置された領域とは、厚さ方向の平面視にて吸水シート７０と重なる領域である。吸水シート７０が配置された領域の収縮力が外側領域Ｒ４の収縮力又は内側領域Ｒ３の収縮力よりも高いため、吸水シート７０が配置された領域が着用者の肌から浮かずに体にフィットし易い。好ましくは、吸水シート７０が配置された領域の幅方向Ｗの収縮力は、外側領域Ｒ４の幅方向Ｗの収縮力よりも高くてよい。吸水シート７０が配置された領域が外側領域Ｒ４よりも体にフィットし、吸水シート７０が外側領域Ｒ４側において肌から浮き上がり難くなり、吸水シートによって吸収した体液が胴回り開口部６２から漏れることを抑制できる。より好ましくは、吸水シートが配置された領域の幅方向の収縮力は、外側領域Ｒ４の幅方向の収縮力及び内側領域Ｒ３の幅方向の収縮力よりも高くてよい。吸水シートがより体にフィットし易い。吸水シートがすることにより、効率よく体液を吸収し、吸収性を向上できる。 The contraction force in the width direction of the area where the water absorbent sheet 70 is disposed may be higher than the contraction force of the area located on the outer side in the longitudinal direction. As shown in FIG. 4, a region extending from the outer edge 702 in the longitudinal direction L of the water absorbent sheet 70 to the outside in the longitudinal direction L is an outer region R4, and the longitudinal direction L from the inner edge 701 in the longitudinal direction L of the water absorbent sheet 70. The inner region R3 extends to the inside of the The contraction force in the width direction of the region where the water absorbent sheet 70 is disposed may be higher than the contraction force in the width direction W of at least one of the outer region R4 and the inner region R3. The region where the water absorbing sheet 70 is disposed is a region overlapping the water absorbing sheet 70 in plan view in the thickness direction. Since the contraction force of the area where the water absorption sheet 70 is disposed is higher than the contraction force of the outer area R4 or the contraction area of the inner area R3, the area where the water absorption sheet 70 is disposed fits the body without floating from the skin of the wearer. Easy to do. Preferably, the contraction force in the width direction W of the area in which the water absorbent sheet 70 is disposed may be higher than the contraction force in the width direction W of the outer region R4. The region where the water absorbing sheet 70 is disposed fits the body more than the outer region R4, making it difficult for the water absorbing sheet 70 to lift up from the skin on the outer region R4 side, and suppressing leakage of body fluid absorbed by the water absorbing sheet from the waist opening 62 it can. More preferably, the contraction force in the width direction of the region where the water absorbent sheet is disposed may be higher than the contraction force in the width direction of the outer region R4 and the contraction force in the width direction of the inner region R3. Absorbent sheet is easier to fit in the body. By the water absorbing sheet, the body fluid can be efficiently absorbed and the absorbability can be improved.
　厚さ方向の平面視にて、テープ部材８０は、吸水シート７０の少なくとも一部に重なって配置されてよい。吸水シート７０は、テープ部材と重なる領域においてテープ部材によって剛性が高くなる。よって、吸水シート７０に皺が発生し難くなり、吸水シート７０が肌により密着し易くなる。 In plan view in the thickness direction, the tape member 80 may be disposed to overlap at least a portion of the water absorbent sheet 70. The water absorbing sheet 70 has high rigidity by the tape member in a region overlapping with the tape member. Therefore, wrinkles are less likely to occur in the water absorbing sheet 70, and the water absorbing sheet 70 is more likely to be in close contact with the skin.
　図３に示すように、長手方向Ｌにおいて、テープ部材８０の内端縁８０１は、吸水シート７０の長手方向Ｌの中心よりも内側に配置されてよい。吸水シート７０は、汗を吸収し易い領域に配置されることが好ましく、着用者の臀裂から背中に跨って配置されることが好ましい。テープ部材８０は、吸水シート７０の長手方向Ｌの中心よりも内側に位置し、着用者の臀裂に対応する位置に配置され易い。より好適には、長手方向において、テープ部材８０の内端縁８０１は、吸水シート７０の内端縁７０１よりも内側に配置されてよい。テープ部材８０は、着用者の臀裂に対応する位置により配置され易い。よって、テープ部材８０と重なった吸水シート７０が、臀裂の窪みにフィットし、吸収性を向上できる。 As shown in FIG. 3, in the longitudinal direction L, the inner end edge 801 of the tape member 80 may be disposed inside the center of the longitudinal direction L of the water absorbent sheet 70. The water absorbing sheet 70 is preferably disposed in a region that easily absorbs sweat, and is preferably disposed across the torso and back of the wearer. The tape member 80 is located inward of the center of the water absorbing sheet 70 in the longitudinal direction L, and is easily disposed at a position corresponding to the tear of the wearer. More preferably, in the longitudinal direction, the inner edge 801 of the tape member 80 may be disposed inside the inner edge 701 of the water absorbent sheet 70. The tape member 80 is easy to be disposed by the position corresponding to the tear of the wearer. Therefore, the water absorbing sheet 70 overlapped with the tape member 80 can be fitted into the dent of the crease and the absorbability can be improved.
　厚さ方向の平面視にて、テープ部材８０は、後胴回り域Ｓ２の幅方向の中心に重なってよい。テープ部材８０は、後胴回り域Ｓ２の幅方向の中心に重なっており、装着時に着用者に臀裂の窪みに入り込み易い。より好適には、テープ部材８０は、後胴回り域Ｓ２の幅方向Ｗの中心を跨って配置されてよい。テープ部材８０は、臀裂の幅方向の中心から左右に延びる一定範囲において臀裂の窪みに入り込み易くなる。テープ部材８０と重なる吸水シート７０がより肌に密着し、吸収性をより向上できる。 In plan view in the thickness direction, the tape member 80 may overlap the center in the width direction of the rear waist region S2. The tape member 80 overlaps the center in the width direction of the back waist area S2, and is easy for the wearer to get into the dent of the torso when worn. More preferably, the tape member 80 may be disposed across the center in the width direction W of the back waist area S2. The tape member 80 can easily enter the dent of the palpebral ridge in a certain range extending laterally from the widthwise center of the palpebral fissure. The water absorbing sheet 70 overlapping with the tape member 80 is in close contact with the skin, and the absorbability can be further improved.
　厚さ方向の平面視にて、吸水シート７０の少なくとも一部は、吸収コア４５の肌対向面側において、吸収コア４５の長手方向の外端縁に重なってよい。より詳細には、吸水シート７０と吸収コア４５は、長手方向Ｌにおいて吸水シートの内端縁から吸収コアの外端縁までの領域で重なり、幅方向Ｗにおいて、吸収コア４５の外側縁よりも内側の領域で重なってよい。吸収コア４５は、体液を吸収する吸収材料が積層されており、一般的に吸収コアの厚さは、バックシート等の他のおむつの構成部材の厚さよりも厚い。吸水シート７０は、吸収コアの長手方向の外端縁に重なっており、吸収コアの厚さによって着用者側に近づいて配置される。よって、吸水シートが着用者に密着し、吸収性を向上できる。また、吸収コアの外端縁は、一般的に、着用者の臀裂近傍に重なるように設けられている。吸水シートは、吸収コアの外端縁に重なっており、臀裂に入り込んで配置される。よって、吸収性をより向上できる。 In plan view in the thickness direction, at least a part of the water absorbent sheet 70 may overlap the outer edge of the absorbent core 45 in the longitudinal direction on the skin facing surface side of the absorbent core 45. More specifically, the water-absorbent sheet 70 and the absorbent core 45 overlap in the longitudinal direction L in the region from the inner edge of the water-absorbent sheet to the outer edge of the absorbent core, and in the width direction W, rather than the outer edge of the absorbent core 45 It may overlap in the inner area. The absorbent core 45 is laminated with an absorbent material that absorbs body fluid, and generally the thickness of the absorbent core is thicker than the thickness of other diaper components such as a back sheet. The water absorbing sheet 70 overlaps the longitudinal outer edge of the absorbent core, and is disposed closer to the wearer by the thickness of the absorbent core. Therefore, a water absorption sheet can be stuck to a wearer and absorption can be improved. Also, the outer edge of the absorbent core is generally provided so as to overlap near the groin of the wearer. The water-absorbent sheet overlaps the outer edge of the absorbent core and is placed in the cleft. Thus, the absorbability can be further improved.
　また、変形例において、吸水シート７０は、長手方向Ｌにおいて吸収コア４５と離間していてもよい。吸収コア４５と吸水シート７０が長手方向において離間している、すなわち、吸収コア４５と吸水シート７０が厚さ方向の平面視にて重なっていないことにより、吸収コア４５によって吸収した体液が吸水シート７０側に伝わり難くなる。よって、吸水シート７０からの体液の漏れをより抑制できる。 In the modification, the water absorbent sheet 70 may be separated from the absorbent core 45 in the longitudinal direction L. Since the absorbent core 45 and the water absorbing sheet 70 are separated in the longitudinal direction, that is, the absorbent core 45 and the water absorbing sheet 70 do not overlap in a planar view in the thickness direction, the body fluid absorbed by the absorbent core 45 is a water absorbent sheet It becomes difficult to transmit to the 70 side. Therefore, the leak of the bodily fluid from water absorption sheet 70 can be controlled more.
　後胴回り域Ｓ２の外端縁と吸収性本体４０の外端縁との長さＬ１２が、前胴回り域Ｓ１の外端縁と吸収性本体４０の外端縁との長さＬ１１よりも長くてよい。吸収性本体４０は、股下域Ｓ３に配置されており、着用時に脚によって挟まれ、幅方向Ｗに圧縮され易い。吸収性本体４０が、長手方向Ｌにおいて後胴回り域Ｓ２より前胴回り域Ｓ１側に偏倚して配置されている。よって、後胴回り域Ｓ２は、吸収性本体４０が圧縮されることによる影響を受け難い。後胴回り域Ｓ２に配置された吸水シート７０が肌に密着した状態を維持し易い。 The length L12 of the outer edge of the back waist area S2 and the outer edge of the absorbent body 40 is longer than the length L11 of the outer edge of the front waist area S1 and the outer edge of the absorbent body 40. Good. The absorbent main body 40 is disposed in the crotch region S3, and is easily pinched by the leg when being worn and compressed in the width direction W. The absorbent main body 40 is disposed to be biased toward the front waist area S1 side from the rear waist area S2 in the longitudinal direction L. Therefore, the back waist region S2 is not easily affected by the compression of the absorbent main body 40. It is easy to maintain the water-absorbent sheet 70 disposed in the back waist area S2 in close contact with the skin.
　以上、上述の実施形態を用いて本発明について詳細に説明したが、当業者にとっては、本発明が本明細書中に説明した実施形態に限定されるものではないということは明らかである。本発明は、特許請求の範囲の記載により定まる本発明の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。したがって、本明細書の記載は、例示説明を目的とするものであり、本発明に対して何ら制限的な意味を有するものではない。 Although the present invention has been described above in detail using the above embodiments, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be embodied as modifications and alterations without departing from the spirit and scope of the present invention defined by the description of the claims. Accordingly, the description in the present specification is for the purpose of illustration and does not have any limiting meaning on the present invention.
　なお、２０１７年１１月１０日に出願された日本国特許出願第２０１７－２１７７８８号の全内容が、参照により、本明細書に組み込まれる。 The entire content of Japanese Patent Application No. 2017-217788 filed on Nov. 10, 2017 is incorporated herein by reference.
　本発明によれば、使用者が漏れに対する安心感と吸収性に対する安心感の両方を得易い使い捨ておむつを提供できる。 According to the present invention, it is possible to provide a disposable diaper in which the user can easily obtain both a sense of security against leakage and a sense of security against absorbability.
１０　　使い捨ておむつ
２０　　前胴回り部材
３０　　後胴回り部材
３５　　第１外装不織布シート（不織布シート）
３６　　第２外装不織布シート（不織布シート）
４０　　吸収性本体
４５　　吸収コア
４６　　レッグフラップ
４９　　有効長
５０　　バックシート
５１　　第１バックシート
５２　　第２バックシート
６０　　サイド接合部
７０　　吸水シート
７１　　パルプシート
７２　　吸水不織布シート（不織布シート）
７５　　延出部
８０　　テープ部材
Ｓ１　　前胴回り域
Ｓ２　　後胴回り域
Ｓ３　　股下域
Ｌ　　　長手方向
Ｗ　　　幅方向
Ｔ１　　肌対向面側
Ｔ２　　非肌対向面側 10 disposable diaper 20 front waist member 30 back waist member 35 first exterior nonwoven sheet (non-woven sheet)
36 2nd exterior nonwoven fabric sheet (nonwoven fabric sheet)
40 Absorbent Main Body 45 Absorbent Core 46 Leg Flap 49 Effective Length 50 Back Sheet 51 First Back Sheet 52 Second Back Sheet 60 Side Joint 70 Water Absorbing Sheet 71 Pulp Sheet 72 Water Absorbing Nonwoven Sheet (Nonwoven Sheet)
75 Extension part 80 Tape member S1 Front waist area S2 Back waist area S3 Crotch area L Longitudinal direction W Width direction T1 Skin facing surface side T2 Non-skin facing surface side

Claims (10)

  1. 　互いに直交する長手方向及び幅方向と、
    　前胴回り域、後胴回り域、及び前記前胴回り域及び前記後胴回り域との間に配置された股下域と、
    　少なくとも前記股下域に配置される吸収性本体と、
    　前記前胴回り域及び前記後胴回り域の一方の少なくとも一方に配置される吸水シートと、
    　前記吸水シートよりも非肌対向面側に配置される液不透過性のバックシートと、を有する使い捨ておむつであって、
    　前記吸水シートは、着色されており、
    　厚さ方向の平面視にて、前記バックシートの少なくとも一部は、前記吸水シートに重なっており、
    　前記吸水シートは、前記バックシートの前記長手方向の外端縁よりも前記長手方向の外側に延出した長手延出部を有する、使い捨ておむつ。     Longitudinal and width directions perpendicular to each other;
    A front waist region, a rear waist region, and a crotch region disposed between the front waist region and the rear waist region;
    An absorbent body disposed at least in the crotch region;
    A water absorbing sheet disposed in at least one of the front waist area and the rear waist area;
    It is a disposable diaper which has a liquid impervious back sheet arrange | positioned rather than the said water absorption sheet | seat by the non-skin opposing surface side, Comprising:
    The water-absorbent sheet is colored,
    At least a part of the back sheet overlaps the water absorbent sheet in plan view in the thickness direction,
    The disposable absorbent diaper, wherein the water absorbent sheet has a longitudinally extending portion extending outward in the longitudinal direction with respect to the longitudinal outer edge of the back sheet.
  2. 　前記吸水シートと前記バックシートが重なる領域の前記長手方向の長さは、前記長手延出部の前記長手方向の長さよりも長い、請求項１に記載の使い捨ておむつ。 The disposable diaper according to claim 1, wherein the length in the longitudinal direction of the region where the water absorbent sheet and the back sheet overlap is longer than the length in the longitudinal direction of the longitudinally extending portion.
  3. 　前記吸収性本体は、吸収コアを有し、
    　前記厚さ方向の平面視にて、前記吸水シートの少なくとも一部は、前記吸収コアの肌対向面側において、前記吸収コアの前記長手方向の外端縁に重なっている、請求項１又は請求項２に記載の使い捨ておむつ。     The absorbent body comprises an absorbent core,
    At least a part of the water absorbent sheet is overlapped with the outer edge of the absorbent core in the longitudinal direction on the skin facing surface side of the absorbent core in a plan view in the thickness direction. The disposable diaper according to Item 2.
  4. 　前記吸収性本体は、吸収コアを有し、
    　前記吸水シートは、前記長手方向において前記吸収コアと離間している、請求項１又は請求項２に記載の使い捨ておむつ。     The absorbent body comprises an absorbent core,
    The disposable diaper according to claim 1 or 2, wherein the water absorbent sheet is separated from the absorbent core in the longitudinal direction.
  5. 　前記吸水シートは、前記バックシートの前記幅方向の外側縁よりも前記幅方向の外側に延出した幅延出部を有する、請求項１から請求項４のいずれか１項に記載の使い捨ておむつ。 The disposable diaper according to any one of claims 1 to 4, wherein the water-absorbent sheet has a width extending part extending outward in the width direction with respect to the outer edge in the width direction of the back sheet. .
  6. 　前記幅延出部は、前記バックシートの外側縁と前記使い捨ておむつの外側縁との前記幅方向の中心よりも前記幅方向の外側に延出している、請求項５に記載の使い捨ておむつ。 The disposable diaper according to claim 5, wherein the width extending portion extends outward in the width direction more than the center in the width direction of the outer edge of the back sheet and the outer edge of the disposable diaper.
  7. 　前記吸水シートは、前記使い捨ておむつの前記幅方向の全域に配置されている、請求項１から請求項６のいずれか１項に記載の使い捨ておむつ。 The disposable diaper according to any one of claims 1 to 6, wherein the water absorbent sheet is disposed in the entire area in the width direction of the disposable diaper.
  8. 　前記吸水シートの前記長手方向の外端縁から前記長手方向の外側に延びる外側領域と、
    前記吸水シートの前記長手方向の内端縁から前記長手方向の内側に延びる内側領域と、を有し、
    　前記吸水シートが配置された領域の前記幅方向の収縮力は、前記外側領域と前記内側領域の少なくとも一方の前記幅方向の収縮力よりも高い、請求項１から請求項７のいずれか１項に記載の使い捨ておむつ。     An outer region extending outwardly in the longitudinal direction from the longitudinal outer edge of the water-absorbent sheet;
    And an inner region extending inward in the longitudinal direction from the longitudinal inner end edge of the water-absorbent sheet.
    The contraction force in the width direction of the region where the water-absorbent sheet is disposed is higher than the contraction force in the width direction of at least one of the outer region and the inner region. Disposable diapers described in.
  9. 　前記吸水シートが配置された領域の前記幅方向の収縮力は、前記外側領域の前記幅方向の収縮力よりも高い、請求項８に記載の使い捨ておむつ。 The disposable diaper according to claim 8, wherein the contraction force in the width direction of the area where the water absorbent sheet is disposed is higher than the contraction force in the width direction of the outer area.
  10. 　前記厚さ方向の平面視にて、前記長手延出部に重なり、かつ前記長手延出部の非肌対向面側に配置された伸縮性部材を有し、
    　自然状態の前記使い捨ておむつを非肌対向面側から視認した状態における前記長手延出部のL*a*b*色空間のＬ値は、８２以上である、請求項１から請求項９のいずれかに記載の使い捨ておむつ。     It has an elastic member that overlaps with the longitudinally extending portion and is disposed on the non-skin facing surface side of the longitudinally extending portion in plan view in the thickness direction,
    The L value of the L * a * b * color space of the longitudinally extending portion in a state in which the disposable diaper in a natural state is viewed from the non-skin facing surface side is 82 or more. Disposable disposable diapers.
PCT/JP2018/041783 2017-11-10 2018-11-12 Disposable diaper WO2019093507A1 (en)

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Citations (5)

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JP2007050145A (en) * 2005-08-19 2007-03-01 Livedo Corporation Disposable absorbent article
JP2007312927A (en) * 2006-05-24 2007-12-06 Kao Corp Pants-type absorbent article
JP2008188182A (en) * 2007-02-02 2008-08-21 Uni Charm Corp Absorbent article
JP2009148531A (en) * 2007-11-30 2009-07-09 Daio Paper Corp Disposable diaper
JP2018079036A (en) * 2016-11-15 2018-05-24 花王株式会社 Absorbent article

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JP2002330995A (en) 2001-03-07 2002-11-19 Sekisui Chem Co Ltd Throw-away diaper

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JP2007050145A (en) * 2005-08-19 2007-03-01 Livedo Corporation Disposable absorbent article
JP2007312927A (en) * 2006-05-24 2007-12-06 Kao Corp Pants-type absorbent article
JP2008188182A (en) * 2007-02-02 2008-08-21 Uni Charm Corp Absorbent article
JP2009148531A (en) * 2007-11-30 2009-07-09 Daio Paper Corp Disposable diaper
JP2018079036A (en) * 2016-11-15 2018-05-24 花王株式会社 Absorbent article

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