JP6941518B2 - Absorbent article - Google Patents

Absorbent article Download PDF

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JP6941518B2
JP6941518B2 JP2017178354A JP2017178354A JP6941518B2 JP 6941518 B2 JP6941518 B2 JP 6941518B2 JP 2017178354 A JP2017178354 A JP 2017178354A JP 2017178354 A JP2017178354 A JP 2017178354A JP 6941518 B2 JP6941518 B2 JP 6941518B2
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side sheet
region
sheet
surface side
main body
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JP2018108338A5 (en
JP2018108338A (en
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智浩 只井
智浩 只井
藍子 恩田
藍子 恩田
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Kao Corp
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Kao Corp
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Priority to RU2019120047A priority Critical patent/RU2737447C1/en
Priority to CN201780072766.2A priority patent/CN109982672B/en
Priority to PCT/JP2017/043864 priority patent/WO2018123489A1/en
Publication of JP2018108338A publication Critical patent/JP2018108338A/en
Publication of JP2018108338A5 publication Critical patent/JP2018108338A5/ja
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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
    • A61F13/45—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

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

Description

本発明は、使い捨ておむつ、生理用ナプキン等の吸収性物品に関する。 The present invention relates to absorbent articles such as disposable diapers and sanitary napkins.

例えば、パンツ型使い捨ておむつには、吸収体を備えた縦長の吸収性本体の外側に外装体が配されている。このような外装体に用いる伸縮性の複合シートとして、例えば、特許文献１に記載の複合シートが知られている。 For example, in a pants-type disposable diaper, an exterior body is arranged on the outside of a vertically long absorbent body provided with an absorbent body. As an elastic composite sheet used for such an exterior body, for example, the composite sheet described in Patent Document 1 is known.

特許文献１に記載の伸縮性の複合シートは、非伸縮性シート、伸縮性不織布、及び該非伸縮性シートと該伸縮性不織布とを貼り合わせる接着部分を備えるシートである。このような伸縮性の複合シートを、例えばパンツ型使い捨ておむつの外装体にしようすれば、使い捨ておむつの見栄えが良く、使用感が向上する。 The stretchable composite sheet described in Patent Document 1 is a sheet including a non-stretchable sheet, a stretchable non-woven fabric, and an adhesive portion for bonding the non-stretchable sheet and the stretchable non-woven fabric. If such an elastic composite sheet is used as the outer body of a pants-type disposable diaper, for example, the disposable diaper looks good and the usability is improved.

ＷＯ２００８／０６６００９号パンフレットWO2008 / 06609 Pamphlet

しかし、特許文献１には、非伸縮性シートと伸縮性不織布とを接着部分にて貼り合わせた伸縮性の複合シートを、外装体に用いる場合に、該複合シートと吸収性材料を含む吸収体との接合位置について、何ら記載されていない。例えば、吸収体と重なる位置に単に伸縮性の複合シートを接合配置しただけでは、複合シートの収縮によって吸収体に皺が発生し、吸収体の吸収性能が阻害され、漏れを生じてしまう可能性がある。 However, in Patent Document 1, when a stretchable composite sheet in which a non-stretchable sheet and a stretchable non-woven fabric are bonded at an adhesive portion is used for an exterior body, an absorber containing the composite sheet and an absorbent material is used. There is no description about the joint position with. For example, if an elastic composite sheet is simply joined and arranged at a position where it overlaps with the absorber, the shrinkage of the composite sheet may cause wrinkles in the absorber, impairing the absorption performance of the absorber, and causing leakage. There is.

したがって本発明は、前述した従来技術が有する欠点を解消し得る吸収性物品を提供することにある。 Therefore, the present invention is to provide an absorbent article capable of eliminating the above-mentioned drawbacks of the prior art.

本発明は、縦方向に腹側領域および背側領域と、それらの間に位置する股下領域とを備え、前記腹側領域と前記背側領域とに亘って吸収性材料を含む吸収体を具備する吸収性本体を有し、該腹側領域及び該背側領域それぞれに横方向に延びる腹側伸縮部及び背側伸縮部を有する吸収性物品であって、前記腹側伸縮部及び前記背側伸縮部は、それぞれ、前記吸収性本体に接合される本体側シートと、該本体側シートの非肌対向面に配される外面側シートとを有し、前記本体側シート及び前記外面側シートの少なくとも一方は、横方向に伸縮性を有する伸縮シートであり、前記伸縮シートは、相対的に伸縮性の高い高伸縮部位と相対的に伸縮性の低い低伸縮部位とが横方向に交互に配されており、前記腹側伸縮部及び前記背側伸縮部の少なくとも一方には、前記伸縮シートが配され、前記吸収体と重なる領域においては前記本体側シートと前記外面側シートとが前記高伸縮部位で接合される第１接合部位を形成し、前記吸収体よりも外方の該吸収体と重ならない領域においては該本体側シートと該外面側シートとが前記低伸縮部位で接合される第２接合部位を形成し且つ前記高伸縮部位で接合されていない第２非接合部位を形成している、吸収性物品を提供するものである。 The present invention includes an absorber that includes a ventral region and a dorsal region in the longitudinal direction and an inseam region located between them, and includes an absorbent material over the ventral region and the dorsal region. An absorbent article having an absorbent body and having a ventral stretchable portion and a dorsal stretchable portion extending laterally in each of the ventral region and the dorsal region, wherein the ventral stretchable portion and the dorsal side Each of the elastic portions has a main body side sheet joined to the absorbent main body and an outer surface side sheet arranged on the non-skin facing surface of the main body side sheet, and the main body side sheet and the outer surface side sheet. At least one is an elastic sheet having elasticity in the lateral direction, and in the elastic sheet, high elastic portions having relatively high elasticity and low elastic portions having relatively low elasticity are arranged alternately in the lateral direction. The stretchable sheet is arranged on at least one of the ventral stretchable portion and the dorsal stretchable portion, and the main body side sheet and the outer surface side sheet are highly stretchable in a region overlapping the absorber. A first joining site is formed to be joined at the site, and the main body side sheet and the outer surface side sheet are joined at the low expansion / contraction site in a region outside the absorber and not overlapping with the absorber. It provides an absorbent article that forms a second non-joint portion that forms a two-joint portion and is not joined at the highly stretchable portion.

本発明によれば、吸収体に皺が発生し難くて吸収性能が阻害され難く、吸収性物品の見栄えが良くて使用感が向上する。 According to the present invention, wrinkles are less likely to occur in the absorber, absorption performance is less likely to be impaired, and the absorbable article looks good and the usability is improved.

図１は、本発明の好ましい一実施形態であるパンツ型使い捨ておむつの斜視図である。FIG. 1 is a perspective view of a pants-type disposable diaper, which is a preferred embodiment of the present invention. 図２は、図１に示すおむつを展開して引き伸ばした状態を肌当接面側から視た一部破断展開平面図である。FIG. 2 is a partially broken unfolded plan view of the unfolded and stretched state of the diaper shown in FIG. 1 as viewed from the skin contact surface side. 図３は、図１に示すおむつを分解して模式的に示す分解斜視図である。FIG. 3 is an exploded perspective view schematically showing the diaper shown in FIG. 1 in an exploded manner. 図４は、図１に示すおむつを構成する伸縮性を有する外面側シートの斜視図である。FIG. 4 is a perspective view of the elastic outer surface side sheet constituting the diaper shown in FIG. 図５は、図２に示すＶ―Ｖ線断面図である。FIG. 5 is a sectional view taken along line VV shown in FIG. 図６（ａ）は図２に示すＶＩ―ＶＩ線断面図であり、図６（ｂ）は図６（ａ）が収縮した状態を示す断面図である。6 (a) is a sectional view taken along line VI-VI shown in FIG. 2, and FIG. 6 (b) is a sectional view showing a state in which FIG. 6 (a) is contracted.

以下、本発明をその好ましい実施形態に基づき図面を参照しながら説明する。
本発明の吸収性物品は、縦方向Ｘに腹側領域Ａおよび背側領域Ｂと、それらＡ，Ｂの間に位置する股下領域Ｃとを備え、腹側領域Ａと背側領域Ｂとに亘って吸収性材料を含む吸収体２３を有し、腹側領域Ａ及び背側領域Ｂそれぞれに横方向Ｙに延びる腹側伸縮部ＷＡ及び背側伸縮部ＷＢを有している。ここで、腹側領域Ａとは使い捨ておむつの着用時に着用者の腹側に配される領域であり、背側領域Ｂとは使い捨ておむつの着用時に着用者の背側に配される領域である。そして、腹側伸縮部ＷＡは、このような着用者の腹側に配される腹側領域Ａに形成されている。また、背側伸縮部ＷＢは、このような着用者の背側に配される背側領域Ｂに形成されている。 Hereinafter, the present invention will be described based on the preferred embodiment with reference to the drawings.
The absorbent article of the present invention includes a ventral region A and a dorsal region B in the longitudinal direction X, and an inseam region C located between the ventral regions A and the dorsal region B, and the ventral region A and the dorsal region B. It has an absorber 23 containing an absorbent material, and has a ventral stretchable portion WA and a dorsal stretchable portion WB extending in the lateral direction Y in each of the ventral region A and the dorsal region B. Here, the ventral area A is an area arranged on the ventral side of the wearer when wearing a disposable diaper, and the dorsal area B is an area arranged on the back side of the wearer when wearing a disposable diaper. .. The ventral telescopic portion WA is formed in the ventral region A arranged on the ventral side of the wearer. Further, the dorsal telescopic portion WB is formed in the dorsal region B arranged on the dorsal side of such a wearer.

図１及び図２には、本発明の吸収性物品の一実施形態であるパンツ型使い捨ておむつ１（以下、「おむつ１」ともいう。）が示されている。おむつ１は、図１及び図２に示すとおり、吸収性本体２と、吸収性本体２の非肌対向面側に配されて該吸収性本体２を固定する外装体３とを備え、外装体３は腹側領域Ａ及び背側領域Ｂそれぞれに横方向Ｙに延びる腹側伸縮部ＷＡ及び背側伸縮部ＷＢを有している。おむつ１は、外装体３の腹側領域Ａの左右両側縁部３ａ１，３ａ１と外装体３の背側領域Ｂの左右両側縁部３ｂ１，３ｂ１とが接合されて一対のサイドシール部５，５、ウエスト開口部ＷＨ及び一対のレッグ開口部ＬＨ，ＬＨが形成されている使い捨ておむつである。好適に、おむつ１の外装体３は、図２に示すように、展開させかつ伸長させた状態を平面視して、着用時に着用者の腹側に配される腹側領域Ａ、着用時に着用者の背側に配される背側領域Ｂ、及び腹側領域Ａと背側領域Ｂとの間の股下領域Ｃに区分されている。 1 and 2 show a pants-type disposable diaper 1 (hereinafter, also referred to as “diaper 1”), which is an embodiment of the absorbent article of the present invention. As shown in FIGS. 1 and 2, the diaper 1 includes an absorbent main body 2 and an outer body 3 arranged on the non-skin facing surface side of the absorbent main body 2 and fixing the absorbent main body 2. Reference numeral 3 denotes a ventral telescopic portion WA and a dorsal telescopic portion WB extending in the lateral direction Y in each of the ventral region A and the dorsal region B. In the diaper 1, a pair of side seal portions 5, 5 are formed by joining the left and right side edge portions 3a1, 3a1 of the ventral region A of the exterior body 3 and the left and right side edge portions 3b1, 3b1 of the dorsal region B of the exterior body 3. , A disposable diaper in which a waist opening WH and a pair of leg openings LH, LH are formed. Preferably, as shown in FIG. 2, the exterior body 3 of the diaper 1 has a ventral region A arranged on the ventral side of the wearer when worn, in a plan view of the unfolded and stretched state, and is worn when worn. It is divided into a dorsal region B arranged on the dorsal side of the person and an inseam region C between the ventral region A and the dorsal region B.

上述したおむつ１を展開させかつ伸長させた状態とは、図２に示すように、サイドシール部５を引き剥がして、おむつ１を展開状態とし、その展開状態のおむつ１を、各部の弾性部材を伸長させて、設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで広げた状態を意味する。 As shown in FIG. 2, the above-mentioned state in which the diaper 1 is unfolded and stretched means that the side seal portion 5 is peeled off to bring the diaper 1 into the unfolded state, and the unfolded diaper 1 is an elastic member of each part. It means a state in which the diaper is stretched and expanded to the design dimension (the same as the dimension when the diaper is expanded in a plane with the influence of the elastic member completely excluded).

本明細書において、「肌対向面」とは、おむつ１又はその構成部材における、着用時に着用者の肌側に向けられる面であり、「非肌対向面」とは、おむつ１又はその構成部材における、着用時に着用者の肌側とは反対側（着衣側）に向けられる面である。おむつ１において、縦方向（Ｘ方向）とは、平面に展開させかつ伸長させた状態で、腹側領域Ａから背側領域Ｂにわたる方向のことである。また、横方向（Ｙ方向）とは、縦方向（Ｘ方向）と直交する方向であり、平面に展開させかつ伸長させた状態のおむつ１の幅方向のことである。
また、おむつ１は、図２に示す、縦方向（Ｘ方向）に延びる縦中心線ＣＬ１に対して左右対称形となっている。尚、図２中のＣＬ２は、おむつ１を縦方向（Ｘ方向）に二分する横方向（Ｙ方向）に延びる横中心線であり、縦中心線ＣＬ１に直交している。 In the present specification, the "skin facing surface" is the surface of the diaper 1 or its constituent members that faces the wearer's skin side when worn, and the "non-skin facing surface" is the diaper 1 or its constituent members. This is the surface facing the wearer's skin side (clothing side) when worn. In the diaper 1, the vertical direction (X direction) is a direction extending from the ventral region A to the dorsal region B in a state of being unfolded and extended in a plane. The horizontal direction (Y direction) is a direction orthogonal to the vertical direction (X direction), and is the width direction of the diaper 1 in a state of being unfolded and extended in a plane.
Further, the diaper 1 has a symmetrical shape with respect to the vertical center line CL1 extending in the vertical direction (X direction) shown in FIG. CL2 in FIG. 2 is a horizontal center line extending in the horizontal direction (Y direction) that divides the diaper 1 into two in the vertical direction (X direction), and is orthogonal to the vertical center line CL1.

おむつ１では、吸収性本体２は、図２に示すとおり、おむつ１を展開させかつ伸長させた状態において、縦方向（Ｘ方向）が相対的に長い縦長の形状を有している。吸収性本体２は、肌対向面を形成する液透過性の表面シート２１と、非肌対向面を形成する液難透過性（撥水性も含む）の裏面シート２２と、これら両シート２１，２２間に介在配置された液保持性の吸収体２３とを具備する。おむつ１では、吸収性本体２の縦方向（Ｘ方向）の全長は吸収体２３のそれと同じであり、吸収体２３の前後端部２３Ａ，２３Ｂの外端２３Ａ１，２３Ｂ１の位置は、図２に示すように、吸収性本体２の前後端部の外端の位置と同位置にある。また、吸収性本体２の縦方向（Ｘ方向）に沿う両側部には、図２に示すように、縦方向（Ｘ方向）に伸長状態で配された弾性部材２５を有する防漏カフ２４，２４が設けられている。具体的には、防漏カフ２４は、液不透過性又は撥水性で且つ通気性の素材から構成されており、各防漏カフ２４の自由端部近傍には、防漏カフ形成用弾性部材２５が縦方向（Ｘ方向）に伸長した状態で配されている。おむつの着用時には、防漏カフ形成用弾性部材２５の収縮により防漏カフ２４の自由端部側が起立して、横方向（Ｙ方向）への体液の流出が阻止される。 In the diaper 1, as shown in FIG. 2, the absorbent main body 2 has a vertically long shape in which the vertical direction (X direction) is relatively long when the diaper 1 is unfolded and stretched. The absorbent body 2 includes a liquid-permeable front surface sheet 21 that forms a skin-facing surface, a liquid-impermeable (including water-repellent) back surface sheet 22 that forms a non-skin-facing surface, and both sheets 21, 22. It is provided with a liquid-retaining absorber 23 interposed between them. In the diaper 1, the total length of the absorbent body 2 in the vertical direction (X direction) is the same as that of the absorber 23, and the positions of the outer ends 23A1, 23B1 of the front and rear ends 23A and 23B of the absorber 23 are shown in FIG. As shown, the position is the same as the position of the outer end of the front and rear ends of the absorbent body 2. Further, as shown in FIG. 2, the leakage-proof cuffs 24, which have elastic members 25 arranged in an extended state in the vertical direction (X direction), are provided on both sides of the absorbent main body 2 along the vertical direction (X direction). 24 is provided. Specifically, the leak-proof cuff 24 is made of a liquid-impermeable or water-repellent and breathable material, and an elastic member for forming a leak-proof cuff is located near the free end of each leak-proof cuff 24. 25 is arranged in a state of being extended in the vertical direction (X direction). When wearing a diaper, the contraction of the elastic member 25 for forming the leak-proof cuff causes the free end side of the leak-proof cuff 24 to stand up to prevent the outflow of body fluid in the lateral direction (Y direction).

以上のように構成された吸収性本体２は、図２に示すように、その縦方向（Ｘ方向）を、展開かつ伸長状態におけるおむつ１の縦方向（Ｘ方向）に一致させて、外装体３の中央部に、本体固定用接着剤４によって接合されている。本体固定用接着剤４の塗工位置は、図３に示すように、吸収性本体２の縦方向Ｘに沿う両側部に少なくとも対応した位置に形成されている。このように、外装体３は、使い捨ておむつ１の厚み方向における、吸収性本体２を構成する裏面シート２２の非肌対向面側に配されて本体固定用接着剤４によって接着固定されている。従って、おむつ１では、吸収性本体２を構成する吸収体２３が、腹側領域Ａと背側領域Ｂとに亘って配されている。 As shown in FIG. 2, the absorbent main body 2 configured as described above has an exterior body in which the vertical direction (X direction) is matched with the vertical direction (X direction) of the diaper 1 in the expanded and extended state. It is joined to the central portion of No. 3 by the main body fixing adhesive 4. As shown in FIG. 3, the coating position of the main body fixing adhesive 4 is formed at least corresponding to both side portions of the absorbent main body 2 along the vertical direction X. As described above, the exterior body 3 is arranged on the non-skin facing surface side of the back surface sheet 22 constituting the absorbent main body 2 in the thickness direction of the disposable diaper 1 and is adhesively fixed by the main body fixing adhesive 4. Therefore, in the diaper 1, the absorbent body 23 constituting the absorbent main body 2 is arranged over the ventral region A and the dorsal region B.

腹側伸縮部ＷＡ及び背側伸縮部ＷＢは、それぞれ、吸収性本体２に接合される本体側シート３２と、該本体側シート３２の非肌対向面に配される外面側シート３１とを有している。本発明では、本体側シート３２及び外面側シート３１の少なくとも一方は、横方向に伸縮性を有する伸縮シートであるところ、おむつ１では、外面側シート３１が横方向（Ｙ方向）に伸縮性を有する伸縮シートである。また、本発明では、腹側伸縮部ＷＡ及び背側伸縮部ＷＢの少なくとも一方に、前記伸縮シートが配されていればよいところ、おむつ１では、腹側伸縮部ＷＡ及び背側伸縮部ＷＢの両方に、前記伸縮シートが配されている。尚、おむつ１では、本体側シート３２は、伸縮性を有しておらず非伸縮性のシートである。 The ventral telescopic portion WA and the dorsal telescopic portion WB each have a main body side sheet 32 joined to the absorbent main body 2 and an outer surface side sheet 31 arranged on the non-skin facing surface of the main body side sheet 32. doing. In the present invention, at least one of the main body side sheet 32 and the outer surface side sheet 31 is a stretchable sheet having elasticity in the lateral direction, whereas in the diaper 1, the outer surface side sheet 31 has elasticity in the lateral direction (Y direction). It is a stretchable sheet to have. Further, in the present invention, the elastic sheet may be arranged on at least one of the ventral elastic portion WA and the dorsal elastic portion WB, whereas in the diaper 1, the ventral elastic portion WA and the dorsal elastic portion WB may be arranged. The elastic sheet is arranged on both sides. In the diaper 1, the main body side sheet 32 is a non-stretchable sheet that does not have elasticity.

おむつ１では、図３に示すように、吸収性本体２を接着固定する外装体３が、着用状態においておむつ１の外面即ち非肌対向面を形成する外面側シート３１と、外面側シート３１の肌対向面に対向配置された本体側シート３２とを有し、外面側シート３１及び本体側シート３２の積層体を含んで構成されている。おむつ１の着用状態において、外面側シート３１は着用者の身体から遠い側に位置して、おむつ１の非肌対向面（外面）を形成し、本体側シート３２は着用者の身体に近い側に位置して、おむつ１の肌対向面（内面）を形成する。外面側シート３１と本体側シート３２とは、所定の部位においてヒートシール、超音波シール、接着剤等の接合手段を介して互いに接合されている。 In the diaper 1, as shown in FIG. 3, the exterior body 3 for adhesively fixing the absorbent body 2 is the outer surface side sheet 31 forming the outer surface of the diaper 1, that is, the non-skin facing surface in the worn state, and the outer surface side sheet 31. It has a main body side sheet 32 arranged to face the skin facing surface, and is configured to include a laminated body of an outer surface side sheet 31 and a main body side sheet 32. In the wearing state of the diaper 1, the outer surface side seat 31 is located on the side far from the wearer's body to form the non-skin facing surface (outer surface) of the diaper 1, and the main body side seat 32 is on the side closer to the wearer's body. Is located on the skin to form the skin-facing surface (inner surface) of the diaper 1. The outer surface side sheet 31 and the main body side sheet 32 are joined to each other at a predetermined portion via a joining means such as a heat seal, an ultrasonic seal, or an adhesive.

おむつ１では、図３に示すように、本体側シート３２は１枚の連続したシートから構成されているのに対し、外面側シート３１は複数枚のシートが組み合わされて構成されており、具体的には、腹側領域Ａを構成する腹側外面側シート３１Ａと、背側領域Ｂを構成する背側外面側シート３１Ｂと、両シート３１Ａ，３１Ｂ間に位置して股下領域Ｃを構成する股下外面側シート３１Ｃとを含んで構成されている。外面側シート３１を構成する各シート３１Ａ，３１Ｂ，３１Ｃは、それらの縦方向Ｘの端部どうしが重ね合わされ、その重ね合わせ部分において接着剤、ヒートシール、高周波シール、超音波シール等の公知の接合手段によって互いに接合され一体化されている。シート３１Ａ，３１Ｂとシート３１Ｃとの重ね合わせ部分においては、それぞれ、縦方向Ｘの中央に位置するシート３１Ｃが吸収性本体２から相対的に近い側に位置し、シート３１Ｃの縦方向Ｘの両端部の非肌対向面はシート３１Ａ，３１Ｂで被覆されている。 In the diaper 1, as shown in FIG. 3, the main body side sheet 32 is composed of one continuous sheet, while the outer surface side sheet 31 is composed of a combination of a plurality of sheets. specifically, the configuration and ventral outer surface side sheet 31A constituting the ventral region a, and the back-side outer face side sheet 31B that constitutes the back-side region B, and crotch region C located between the two sheets 31A, 31 B It is configured to include the inseam outer surface side seat 31C. The ends of the sheets 31A, 31B, and 31C constituting the outer surface side sheet 31 are overlapped with each other in the vertical direction X, and known adhesives, heat seals, high frequency seals, ultrasonic seals, and the like are known at the overlapped portions. They are joined to each other by joining means and integrated. In overlapped portion of the sheet 31A, 31 B and the sheet 31 C, respectively, the sheet 31 C located in the center of the longitudinal direction X are located relatively close to the side from the absorbent body 2, the sheet 31 C Vertical non-skin facing surface of the opposite ends of the direction X is covered with a sheet 31A, 31 B.

おむつ１では、図３に示すように、腹側外面側シート３１Ａは、本体側シート３２の腹側領域Ａ側の縦方向Ｘの端部から外方に延出する腹側延出部３１ＡＥを有し、また、背側外面側シート３１Ｂは、本体側シート３２の背側領域Ｂ側の縦方向Ｘの端部から外方に延出する背側延出部３１ＢＥを有しており、両延出部３１ＡＥ，３１ＢＥは、それぞれ、本体側シート３２上に配置固定された吸収性本体２の縦方向Ｘの両端部を覆うように、本体側シート３２側に折り返され、接着剤によって、両延出部３１ＡＥ，３１ＢＥと対向するおむつ１の他の構成部材（本体側シート３２、吸収性本体２、防漏カフ２４）に固定されている。 In the diaper 1, as shown in FIG. 3, the ventral outer surface side sheet 31A has a ventral extending portion 31AE extending outward from the end portion of the main body side sheet 32 on the ventral region A side in the vertical direction X. The dorsal outer surface side seat 31B has a dorsal extending portion 31BE extending outward from the end portion of the main body side seat 32 on the dorsal region B side in the vertical direction X, and both of them. The extending portions 31AE and 31BE are folded back toward the main body side sheet 32 side so as to cover both ends of the absorbent main body 2 arranged and fixed on the main body side sheet 32 in the vertical direction X, and both are provided by an adhesive. It is fixed to other constituent members (main body side sheet 32, absorbent main body 2, leakage-proof cuff 24) of the diaper 1 facing the extending portions 31AE and 31BE.

上述の通り、おむつ１の外面側シート３１は横方向Ｙに伸縮性を有しているところ、特におむつ１では、外面側シート３１は部分的に横方向Ｙに伸縮性を有している。即ち、おむつ１では、図３に示すように、外面側シート３１を構成する３枚の腹側外面側シート３１Ａ、背側外面側シート３１Ｂ及び股下外面側シート３１Ｃのうち、腹側外面側シート３１Ａ及び背側外面側シート３１Ｂが横方向Ｙに伸縮性を有し、股下外面側シート３１Ｃは伸縮性を有しておらず非伸縮性である。 As described above, the outer surface side sheet 31 of the diaper 1 has elasticity in the lateral direction Y, and particularly in the diaper 1, the outer surface side sheet 31 partially has elasticity in the lateral direction Y. That is, in the diaper 1, as shown in FIG. 3, of the three ventral outer surface side sheets 31A, the dorsal outer surface side sheet 31B, and the inseam outer surface side sheet 31C constituting the outer surface side sheet 31, the ventral outer surface side sheet The dorsal outer surface side seat 31A and the dorsal outer surface side seat 31B have elasticity in the lateral direction Y, and the inseam outer surface side seat 31C does not have elasticity and is non-stretchable.

本発明において、「横方向Ｙに伸縮性を有する」とは、伸縮性を有するシートの横方向Ｙの最大伸度が１００％以上であり、該シートを該横方向Ｙに伸度１００％まで伸長させた後、収縮させたときの伸長回復率（１００％伸長時の伸長回復率）が、少なくとも７０％以上であることを意味する。おむつ１では、腹側外面側シート３１Ａ及び背側外面側シート３１Ｂが何れも横方向Ｙに伸縮性を有するシートである。シートの伸長回復率は、以下の測定方法により測定される。 In the present invention, "having elasticity in the lateral direction Y" means that the maximum elongation of the stretchable sheet in the lateral direction Y is 100% or more, and the sheet is stretched up to 100% in the lateral direction Y. It means that the elongation recovery rate (elongation recovery rate at 100% elongation) when contracted after stretching is at least 70% or more. In the diaper 1, both the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B are sheets having elasticity in the lateral direction Y. The elongation recovery rate of the sheet is measured by the following measuring method.

＜シートの伸長回復率の測定方法＞
測定対象のシートから長さ５０ｍｍ、幅２５ｍｍのサンプル片を用意する。引張試験機（株式会社オリエンテックの「テンシロン」ＲＴＣ−１１５０Ａ）のチャック間（チャック間隔Ｋ０）にサンプル片を固定し、引張速度３００ｍｍ／ｍｉｎでチャック間を拡げることでサンプル片を引っ張り、サンプル片の１００％伸長時の長さＫ２（＝Ｋ０×２）まで伸長させた後、引張速度と同速度でチャック間を狭めていき、引張応力が０になった時点でのサンプル片の長さを伸長回復後の長さＫ１とする。次式により、測定対象のシートの１００％伸長時の伸長回復率を算出する。
１００％伸長時の伸長回復率（％）＝〔（Ｋ２−Ｋ１）／（Ｋ２−Ｋ０）〕×１００ <Measurement method of sheet elongation recovery rate>
Prepare a sample piece having a length of 50 mm and a width of 25 mm from the sheet to be measured. The sample piece is fixed between the chucks (chuck interval K0) of a tensile tester (Orientec Co., Ltd. "Tencilon" RTC-1150A), and the sample piece is pulled by expanding the chuck space at a tensile speed of 300 mm / min to pull the sample piece. After stretching to the 100% stretched length K2 (= K0 × 2), narrow the gap between the chucks at the same speed as the tensile speed, and set the length of the sample piece when the tensile stress becomes 0. The length after elongation and recovery is K1. The elongation recovery rate at 100% elongation of the sheet to be measured is calculated by the following formula.
Elongation recovery rate at 100% elongation (%) = [(K2-K1) / (K2-K0)] × 100

また本発明において、非伸縮性のシートとは、前記＜シートの伸長回復率の測定方法＞により測定した伸長回復率が２０％以下のシート、又は１００％伸長する前に破断するシートを意味する。おむつ１では、股下外面側シート３１Ｃ及び本体側シート３２が何れも非伸縮性のシートである。 Further, in the present invention, the non-stretchable sheet means a sheet having an elongation recovery rate of 20% or less measured by the above <method for measuring the elongation recovery rate of a sheet>, or a sheet that breaks before being 100% elongated. .. In the diaper 1, both the inseam outer surface side sheet 31C and the main body side sheet 32 are non-stretchable sheets.

おむつ１の伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂとしては、例えば（１）弾性繊維層の両面又は片面に伸長可能な繊維層が一体化されている伸縮シート、（２）ネット状の弾性シートの両面又は片面に伸長可能な繊維層が一体化されている伸縮シート、（３）弾性フィルムからなる弾性シートの両面又は片面に伸長可能な繊維層が一体化されている伸縮シート、（４）互いに交差せずに一方向に延びるように配列した多数の弾性フィラメントが、実質的に非伸長状態で、それらの全長にわたり、伸長可能な不織布に接合されてなる伸縮シート等を好ましく用いることができる。弾性繊維層と伸長可能な繊維層との一体化の方法としては、例えば、これらを積層して水流交絡したり、エアスルー等により繊維を交絡させる方法、ヒートエンボス、接着剤、超音波等によって接合させたりする方法が挙げられる。 The elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B of the diaper 1 include, for example, (1) an elastic sheet in which an stretchable fiber layer is integrated on both sides or one side of the elastic fiber layer, (2). ) A stretchable sheet in which an stretchable fiber layer is integrated on both sides or one side of a net-shaped elastic sheet, (3) A stretchable fiber layer is integrated on both sides or one side of an elastic sheet made of an elastic film. Elastic sheets, (4) elastic sheets in which a large number of elastic filaments arranged so as to extend in one direction without intersecting each other are bonded to a stretchable non-woven fabric over their entire length in a substantially non-extended state. Can be preferably used. As a method of integrating the elastic fiber layer and the stretchable fiber layer, for example, they are laminated and water flow entangled, a method of entwining fibers by air through or the like, heat embossing, an adhesive, ultrasonic waves or the like. There is a way to make it.

おむつ１では、伸縮シートである外面側シート３１は、相対的に伸縮性の高い高伸縮部位３１Ｈと相対的に伸縮性の低い低伸縮部位３１Ｌとが横方向Ｙに交互に配されている。好適に、おむつ１では、図５及び図６に示すように、外面側シート３１を構成する伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂが、高伸縮部位３１Ｈと低伸縮部位３１Ｌとが横方向Ｙに交互に配されて形成されている。 In the diaper 1, the outer surface side sheet 31, which is a stretchable sheet, has a relatively high stretchable portion 31H and a relatively low stretchable portion 31L alternately arranged in the lateral direction Y. Preferably, in the diaper 1, as shown in FIGS. 5 and 6, the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B constituting the outer surface side sheet 31 have a high expansion / contraction portion 31H and a low expansion / contraction portion. 31L and 31L are alternately arranged in the horizontal direction Y to form.

図４には、おむつ１に使用する伸縮シートの好ましい一例が示されている。図４に示す腹側外面側シート３１Ａ及び背側外面側シート３１Ｂは、前記（４）の伸縮シートに相当するもので、非弾性繊維を主体とする伸長可能な繊維層の一面に糸状の弾性フィラメントが接合した構成を有し、該繊維層としての２枚の繊維シート３６，３７と、両シート３６，３７間に介在配置された該弾性フィラメントとしての弾性部材３８とを含んで構成されている。斯かる構成を有する伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂは、例えば、特開２００９−６１７４３号公報に記載の方法に従って、歯と歯底が周方向に交互に形成された一対の歯溝ロールの噛み合わせ部分に挿入し、延伸して形成される。高伸縮部位３１Ｈは、一方の歯溝ロールの歯及び他方の歯溝ロールの歯によって大きく延伸された部位であり、低伸縮部位３１Ｌは、一方の歯溝ロールの歯及び他方の歯溝ロールの歯それぞれとの当接部位であり殆ど延伸されていない部位である。おむつ１の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂにおいては、縦方向Ｘに連続して延びる高伸縮部位３１Ｈと縦方向Ｘに連続して延びる低伸縮部位３１Ｌとが、横方向Ｙに交互に配されている。 FIG. 4 shows a preferable example of the elastic sheet used for the diaper 1. The ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B shown in FIG. 4 correspond to the elastic sheet of the above (4), and have filamentous elasticity on one surface of an expandable fiber layer mainly composed of inelastic fibers. It has a structure in which filaments are joined, and is composed of two fiber sheets 36, 37 as the fiber layer and an elastic member 38 as the elastic filament interposed between the sheets 36, 37. There is. In the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B having such a configuration, teeth and tooth bottoms are alternately formed in the circumferential direction according to, for example, the method described in Japanese Patent Application Laid-Open No. 2009-61743. It is formed by inserting it into the meshing portion of a pair of tooth groove rolls and stretching it. The high stretchable portion 31H is a portion that is greatly stretched by the teeth of one tooth groove roll and the tooth of the other tooth groove roll, and the low stretchable portion 31L is a portion of the tooth of one tooth groove roll and the tooth of the other tooth groove roll. It is a part that comes into contact with each tooth and is a part that is hardly stretched. In the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B of the diaper 1, the high expansion / contraction portion 31H continuously extending in the vertical direction X and the low expansion / contraction portion 31L extending continuously in the vertical direction X are formed in the lateral direction Y. It is arranged alternately in.

おむつ１では、伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂを構成する２枚のシート３６，３７（図４参照）は、何れも伸長可能なものである。シート３６，３７は、弾性部材３８の延びる方向（横方向Ｙ）と同方向に伸長可能になっている。伸長可能とは、（ａ）シート３６，３７の構成繊維自体が伸長する場合と、（ｂ）構成繊維自体は伸長しなくても、交点において結合していた繊維どうしが離れたり、繊維どうしの結合等により複数本の繊維で形成された立体構造が構造的に変化したり、構成繊維がちぎれたりして、シート３６，３７全体として伸長する場合とを包含する。 In the diaper 1, the two sheets 36 and 37 (see FIG. 4) constituting the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B are both expandable. The sheets 36 and 37 can be extended in the same direction as the elastic member 38 extends in the extending direction (horizontal direction Y). Stretchable means that (a) the constituent fibers of the sheets 36 and 37 are elongated, and (b) the constituent fibers themselves are not elongated, but the fibers bonded at the intersection are separated from each other, or the fibers are separated from each other. This includes the case where the three-dimensional structure formed by a plurality of fibers is structurally changed due to bonding or the like, or the constituent fibers are torn off, and the sheets 36 and 37 are elongated as a whole.

おむつ１では、伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂを構成する弾性部材３８（図４参照）は、弾性樹脂が溶融又は軟化した状態で延伸されて形成された弾性フィラメントである。複数の弾性部材３８は、それぞれ、腹側外面側シート３１Ａ及び背側外面側シート３１Ｂの全長（外装体３の横方向Ｙの全長）にわたって実質的に連続している。複数の弾性部材３８は、互いに交差せずに一方向（横方向Ｙ）に延びるように配列している。弾性部材３８は、実質的に非伸長状態で２枚のシート３６，３７に接合されている。腹側外面側シート３１Ａ及び背側外面側シート３１Ｂにおける弾性部材３８のシート３６，３７との接合は、シート３６，３７を構成する繊維（非弾性繊維）が弾性部材３８中に埋没した状態で該弾性部材３８に融着することによりなされたものであり、ホットメルト型接着剤等の接着剤を用いてなされたものではない。従って、シート３６，３７（非弾性繊維を主体とする伸長可能な繊維層）とこれに接合されている弾性部材３８との間には接着剤が存在しない。 In the diaper 1, the elastic member 38 (see FIG. 4) constituting the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B is an elastic filament formed by stretching the elastic resin in a molten or softened state. Is. The plurality of elastic members 38 are substantially continuous over the entire length of the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B (the overall length of the exterior body 3 in the lateral direction Y), respectively. The plurality of elastic members 38 are arranged so as to extend in one direction (horizontal direction Y) without intersecting each other. The elastic member 38 is joined to the two sheets 36, 37 in a substantially non-extended state. The elastic members 38 in the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B are joined to the sheets 36 and 37 in a state where the fibers (non-elastic fibers) constituting the sheets 36 and 37 are embedded in the elastic member 38. It is made by fusing to the elastic member 38, and is not made by using an adhesive such as a hot melt type adhesive. Therefore, there is no adhesive between the sheets 36, 37 (extensible fiber layer mainly composed of inelastic fibers) and the elastic member 38 joined to the sheets 36, 37.

おむつ１では、伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂは、弾性部材３８の延びる方向（横方向Ｙ）と同方向に伸縮可能になっている（図４参照）。腹側外面側シート３１Ａ及び背側外面側シート３１Ｂの伸縮性は、高伸縮部位３１Ｈにおける弾性部材３８の弾性に起因して発現する。腹側外面側シート３１Ａ及び背側外面側シート３１Ｂを弾性部材３８の延びる方向と同方向に引き伸ばすと、高伸縮部位３１Ｈにおける弾性部材３８及びシート３６，３７が伸長する一方、低伸縮部位３１Ｌにおける弾性部材３８及びシート３６，３７は伸長しない。そして腹側外面側シート３１Ａ及び背側外面側シート３１Ｂの引き伸ばしを解除すると、高伸縮部位３１Ｈにおける弾性部材３８が収縮し、その収縮に連れて高伸縮部位３１Ｈにおけるシート３６，３７が引き伸ばし前の状態に復帰する。 In the diaper 1, the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B can be expanded and contracted in the same direction as the extension direction (lateral direction Y) of the elastic member 38 (see FIG. 4). The elasticity of the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B is exhibited due to the elasticity of the elastic member 38 at the highly elastic portion 31H. When the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B are stretched in the same direction as the elastic member 38 extends, the elastic members 38 and the sheets 36, 37 in the highly stretchable portion 31H are stretched, while in the low stretchable portion 31L. The elastic member 38 and the sheets 36, 37 do not stretch. Then, when the stretching of the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B is released, the elastic member 38 in the highly elastic portion 31H contracts, and the sheets 36 and 37 in the highly elastic portion 31H contract before stretching. Return to the state.

高伸縮部位３１Ｈ及び低伸縮部位３１Ｌそれぞれに関し、弾性部材３８の延びる方向（横方向Ｙ）の伸長時の長さは、収縮時を１００％としたとき、高伸縮部位３１Ｈの横方向Ｙの長さが低伸縮部位３１Ｌの横方向Ｙの長さよりも長いことを前提として、高伸縮部位３１Ｈが、１３０％以上であることが好ましく、３００％以上であることが更に好ましく、上限値が６００％以下であることが好ましい。そして、低伸縮部位３１Ｌが、２００％以下であることが好ましく、１７０％以下であることが更に好ましく、下限値が１００％以上であることが好ましい。前記伸長時の長さは、以下の測定方法により測定される。 Regarding each of the high expansion / contraction portion 31H and the low expansion / contraction portion 31L, the length of the elastic member 38 in the extension direction (lateral direction Y) is the length of the high expansion / contraction portion 31H in the lateral direction Y when the contraction time is 100%. The high stretchable portion 31H is preferably 130% or more, more preferably 300% or more, and the upper limit is 600%, on the premise that the length is longer than the length of the low stretchable portion 31L in the lateral direction Y. The following is preferable. The low expansion / contraction portion 31L is preferably 200% or less, more preferably 170% or less, and the lower limit value is preferably 100% or more. The length at the time of extension is measured by the following measuring method.

＜高伸縮部位３１Ｈ及び低伸縮部位３１Ｌの横方向Ｙの伸長時の長さ＞
高伸縮部位３１Ｈと低伸縮部位３１Ｌとが横方向Ｙに交互に配された伸縮シートを、弾性部材３８の延びる方向（横方向Ｙ）へ２００ｍｍ、縦方向Ｘへ５０ｍｍの大きさで矩形のサンプル片を切り出す。そして、ペン等を用いて、高伸縮部位３１Ｈ及び低伸縮部位３１Ｌの部分に印を付け、高伸縮部位３１Ｈ及び低伸縮部位３１Ｌの部分それぞれの横方向Ｙの長さを予め測定する。該サンプル片を、オリエンテック製テンシロンＲＴＣ１２１０Ａに装着する。チャック間距離は１５０ｍｍである。装着したサンプル片を、弾性部材３８の延びる方向（横方向Ｙ）へ１００ｍｍ／分の速度で伸長させ、サンプル片の伸びが止まったところで、伸長時の高伸縮部位３１Ｈ及び低伸縮部位３１Ｌの部分それぞれの横方向Ｙの長さを測定する。そして得られた、高伸縮部位３１Ｈの部分の横方向Ｙの長さをＬａとし、伸長時の高伸縮部位３１Ｈの部分の横方向Ｙの長さをＬｂとしたとき、｛Ｌｂ／Ｌａ｝×１００を、高伸縮部位３１Ｈの横方向Ｙの伸長時の長さ（％）として算出する。また、低伸縮部位３１Ｌの横方向Ｙの伸長時の長さ（％）も、同様にして算出する。 <Length of the highly stretchable portion 31H and the low stretchable portion 31L in the lateral direction Y when stretched>
A rectangular sample having a size of 200 mm in the extending direction (horizontal direction Y) of the elastic member 38 and 50 mm in the vertical direction X in which the highly stretchable portion 31H and the low stretchable portion 31L are alternately arranged in the horizontal direction Y. Cut out a piece. Then, using a pen or the like, the high-stretchable portion 31H and the low-stretchable portion 31L are marked, and the lengths of the high-stretchable portion 31H and the low-stretchable portion 31L in the lateral direction Y are measured in advance. The sample piece is attached to Tencilon RTC1210A manufactured by Orientec. The distance between the chucks is 150 mm. The attached sample piece is stretched in the extending direction (horizontal direction Y) of the elastic member 38 at a speed of 100 mm / min, and when the sample piece stops stretching, the high stretchable portion 31H and the low stretchable portion 31L at the time of stretching stop. The length of each lateral direction Y is measured. Then, when the length of the obtained portion of the highly stretchable portion 31H in the lateral direction is La and the length of the portion of the highly stretchable portion 31H at the time of extension is Lb, {Lb / La} × 100 is calculated as the length (%) of the highly stretchable portion 31H when extended in the lateral direction Y. Further, the length (%) of the low expansion / contraction portion 31L when extended in the lateral direction Y is also calculated in the same manner.

おむつ１では、腹側外面側シート３１Ａ及び背側外面側シート３１Ｂを構成する２枚のシート３６，３７（図４参照）は、それぞれ、短繊維の不織布であり得る。不織布としては、エアスルー不織布、ヒートロール不織布、スパンレース不織布、スパンボンド不織布、メルトブローン不織布等が挙げられる。シート３６とシート３７とは、同種のものでも良く、あるいは異種のものでも良い。ここで言う、「同種のシート」とは、シートの製造プロセス、シートの構成繊維の種類、構成繊維の繊維径や長さ、シートの厚みや坪量等がすべて同じであるシートどうしを意味する。これらのうちの少なくとも１つが異なる場合には、「異種のシート」である。 In the diaper 1, the two sheets 36 and 37 (see FIG. 4) constituting the ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B can be short fiber non-woven fabrics, respectively. Examples of the non-woven fabric include air-through non-woven fabric, heat roll non-woven fabric, spunlace non-woven fabric, spunbond non-woven fabric, melt blown non-woven fabric and the like. The sheet 36 and the sheet 37 may be of the same type or different types. The term "same type of sheet" as used herein means sheets having the same sheet manufacturing process, type of sheet constituent fibers, fiber diameter and length of constituent fibers, sheet thickness and basis weight, and the like. .. If at least one of these is different, it is a "heterogeneous sheet".

おむつ１では、伸縮性の腹側外面側シート３１Ａ及び背側外面側シート３１Ｂを構成する弾性部材３８（弾性フィラメント）（図４参照）は、例えば熱可塑性エラストマーやゴム等を原料とするものである。特に熱可塑性エラストマーを原料として用いると、通常の熱可塑性樹脂と同様に押出機を用いた溶融紡糸が可能であり、またそのようにして得られた弾性フィラメントは熱融着させやすいので、腹側外面側シート３１Ａ及び背側外面側シート３１Ｂに好適である。熱可塑性エラストマーとしては、例えば、ＳＢＳ（スチレン−ブタジエン−スチレン）、ＳＩＳ（スチレン−イソプレン−スチレン）、ＳＥＢＳ（スチレン−エチレン−ブタジエン−スチレン）、ＳＥＰＳ（スチレン−エチレン−プロピレン−スチレン）等のスチレン系エラストマー、オレフィン系エラストマー（エチレン系のα−オレフィンエラストマー、エチレン・ブテン・オクテン等を共重合したプロピレン系エラストマー）、ポリエステル系エラストマー、ポリウレタン系エラストマー等が挙げられ、これらの１種を単独で又は２種以上を組み合わせて用いることができる。また、これらの樹脂からなる芯鞘型又はサイド・バイ・サイド型の複合繊維を用いることもできる。 In the diaper 1, the elastic member 38 (elastic filament) (see FIG. 4) constituting the elastic ventral outer surface side sheet 31A and the dorsal outer surface side sheet 31B is made of, for example, a thermoplastic elastomer or rubber as a raw material. be. In particular, when a thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible as in the case of a normal thermoplastic resin, and the elastic filament thus obtained is easily heat-sealed, so that it is ventral. It is suitable for the outer surface side sheet 31A and the back side outer surface side sheet 31B. Examples of the thermoplastic elastomer include styrenes such as SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), and SEPS (styrene-ethylene-propylene-styrene). Examples thereof include olefin-based elastomers (ethylene-based α-olefin elastomers, styrene-based elastomers obtained by copolymerizing ethylene, butene, octene, etc.), polyester-based elastomers, polyurethane-based elastomers, etc., and one of these may be used alone or. Two or more types can be used in combination. Further, a core-sheath type or side-by-side type composite fiber made of these resins can also be used.

一方、おむつ１では、非伸縮性の股下外面側シート３１Ｃ及び本体側シート３２（図３参照）として、それぞれ、各種製法による不織布が好ましく用いられ、例えば、スパンボンド不織布、エアスルー不織布、ニードルパンチ不織布等である。非伸縮性のシート３１Ｃ，３２として用いる不織布の構成繊維としては、例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリエチレンテレフタレート（ＰＥＴ）やポリブチレンテレフタレート（ＰＢＴ）等のポリエステル、ポリアミド等からなる繊維等が挙げられる。非伸縮性の股下外面側シート３１Ｃ及び本体側シート３２として用いる不織布を構成する繊維は、短繊維でも長繊維でも良く、親水性でも撥水性でも良い。また、芯鞘型又はサイド・バイ・サイド型の複合繊維、分割繊維、異形断面繊維、捲縮繊維、熱収縮繊維等を用いることもできる。これらの繊維は、１種を単独で又は２種以上を組み合わせて用いることができる。 On the other hand, in the diaper 1, non-woven fabrics produced by various manufacturing methods are preferably used as the non-stretchable inseam outer surface side sheet 31C and the main body side sheet 32 (see FIG. 3), respectively. And so on. Examples of the constituent fibers of the non-woven fabric used as the non-stretchable sheets 31C and 32 include fibers made of polyester such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), and polyamide. And so on. The fibers constituting the non-woven fabric used as the non-stretchable inseam outer surface side sheet 31C and the main body side sheet 32 may be short fibers or long fibers, and may be hydrophilic or water repellent. Further, core-sheath type or side-by-side type composite fibers, split fibers, deformed cross-section fibers, crimp fibers, heat-shrinkable fibers and the like can also be used. These fibers may be used alone or in combination of two or more.

おむつ１では、図２及び図３に示すように、腹側領域Ａ及び背側領域Ｂそれぞれには、糸状又は帯状のウエスト弾性部材３３が横方向Ｙに伸長状態で複数本配され、それら複数本のウエスト弾性部材３３は縦方向Ｘに所定間隔を置いて間欠配置されている。このように、ウエスト弾性部材３３がその弾性伸縮性が発現される状態で配されていることにより、ウエスト開口部ＷＨの開口縁部には、その全周にわたって実質的に連続した環状のウエストギャザーが形成される。また、一対のレッグ開口部ＬＨ，ＬＨそれぞれの開口縁部を形成するレッグ縁部には、糸状又は帯状の１本又は複数本のレッグギャザー形成用のレッグ弾性部材３４が伸長状態で配されており、これによって一対のレッグ開口部ＬＨ，ＬＨそれぞれの開口縁部には、その全周にわたって実質的に連続した環状のレッグギャザーが形成される。これらの弾性部材３３，３４は、何れも外装体３を構成する外面側シート３１と本体側シート３２との間に接着剤等の接合手段により挟持固定されている。 In the diaper 1, as shown in FIGS. 2 and 3, a plurality of thread-like or band-shaped waist elastic members 33 are arranged in the ventral region A and the dorsal region B in a laterally extended state, and a plurality of them are arranged. The waist elastic members 33 of the book are intermittently arranged at predetermined intervals in the vertical direction X. As described above, since the waist elastic member 33 is arranged in a state in which the elastic elasticity is exhibited, the waist opening WH has substantially continuous annular waist gathers over the entire circumference of the opening edge of the waist opening WH. Is formed. Further, one or a plurality of thread-like or band-shaped leg elastic members 34 for forming leg gathers are arranged in an extended state on the leg edges forming the opening edges of the pair of leg openings LH and LH, respectively. As a result, at the opening edges of each of the pair of leg openings LH and LH, substantially continuous annular leg gathers are formed over the entire circumference thereof. Each of these elastic members 33 and 34 is sandwiched and fixed between the outer surface side sheet 31 and the main body side sheet 32 constituting the exterior body 3 by a joining means such as an adhesive.

おむつ１では、腹側伸縮部ＷＡ及び背側伸縮部ＷＢは、それぞれ、図５及び図６（ａ）に示すように、本体側シート３２の非肌対向面に伸縮シートから形成された外面側シート３１が横方向Ｙに伸長状態で配されて形成されている。好適に、おむつ１の腹側伸縮部ＷＡは、本体側シート３２の非肌対向面に伸縮性の腹側外面側シート３１Ａが横方向Ｙに伸長状態で配され固定されて形成されている。また、おむつ１の背側伸縮部ＷＢは、本体側シート３２の非肌対向面に伸縮性の背側外面側シート３１Ｂが横方向Ｙに伸長状態で配され固定されて形成されている。ここで、外面側シート３１を横方向Ｙに伸長状態で配するとは、図２に示すように、糸状又は帯状のウエスト弾性部材３３及びレッグ弾性部材３４、並びに弾性フィラメントである弾性部材３８を伸長させて、設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで広げた状態を意味する。 In the diaper 1, the ventral telescopic portion WA and the dorsal telescopic portion WB are formed from the elastic sheet on the non-skin facing surface of the main body side sheet 32, respectively, as shown in FIGS. 5 and 6 (a), respectively. The sheets 31 are arranged and formed in a laterally extended state. Preferably, the ventral elastic portion WA of the diaper 1 is formed by arranging and fixing the elastic ventral outer surface side sheet 31A on the non-skin facing surface of the main body side sheet 32 in a laterally extended state. Further, the dorsal side elastic portion WB of the diaper 1 is formed by arranging and fixing the elastic dorsal outer surface side sheet 31B on the non-skin facing surface of the main body side sheet 32 in the lateral direction Y in an extended state. Here, when the outer surface side sheet 31 is arranged in the lateral direction Y in an extended state, as shown in FIG. 2, the thread-like or band-shaped waist elastic member 33 and leg elastic member 34, and the elastic member 38 which is an elastic filament are extended. It means a state of being expanded to the design dimension (the same as the dimension when expanded in a plane with the influence of the elastic member completely excluded).

おむつ１の腹側伸縮部ＷＡ及び背側伸縮部ＷＢには、それぞれ、吸収体２３と重なる領域２３ＰＴにおいては本体側シート３２と外面側シート３１とが伸縮シートの高伸縮部位３１Ｈで接合される第１接合部位１ＪＴを形成し、吸収体２３よりも外方の吸収体２３と重ならない領域２３ＮＴにおいては本体側シート３２と外面側シート３１とが伸縮シートの低伸縮部位３１Ｌで接合される第２接合部位２ＪＴを形成し且つ伸縮シートの高伸縮部位３１Ｈで接合されていない第２非接合部位２ＮＪＴを形成している。好適に、おむつ１の腹側伸縮部ＷＡ及び背側伸縮部ＷＢにおいては、それぞれ、図５に示すように、非伸縮性のシートである本体側シート３２と伸縮シートである外面側シート３１とを有し、吸収体２３と重なる領域２３ＰＴでは本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが第１接合部位１ＪＴで接合された状態となっている。そして、おむつ１の腹側伸縮部ＷＡ及び背側伸縮部ＷＢにおいては、それぞれ、吸収体２３よりも外方の吸収体２３と重ならない領域２３ＮＴでは本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとが第２接合部位２ＪＴで接合され且つ本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが接合されていない状態となっている。 In the region 23PT that overlaps with the absorber 23, the main body side sheet 32 and the outer surface side sheet 31 are joined to the ventral side elastic portion WA and the dorsal elastic portion WB of the diaper 1 at the highly elastic portion 31H of the elastic sheet, respectively. In the region 23NT that forms the first joint portion 1JT and does not overlap with the absorber 23 outside the absorber 23, the main body side sheet 32 and the outer surface side sheet 31 are joined at the low elastic portion 31L of the elastic sheet. The two joint sites 2JT are formed, and the second non-joint portion 2NJT that is not joined at the highly stretchable portion 31H of the stretchable sheet is formed. Preferably, in the ventral stretchable portion WA and the dorsal stretchable portion WB of the diaper 1, as shown in FIG. 5, the main body side sheet 32 which is a non-stretchable sheet and the outer surface side sheet 31 which is a stretchable sheet, respectively. In the region 23PT that overlaps with the absorber 23, the main body side sheet 32 and the highly stretchable portion 31H of the outer surface side sheet 31 are joined at the first joining portion 1JT. In the ventral stretchable portion WA and the dorsal stretchable portion WB of the diaper 1, the main body side sheet 32 and the outer surface side sheet 31 have low stretchability in the region 23NT that does not overlap with the absorber 23 outside the absorber 23, respectively. The portion 31L is joined by the second joining portion 2JT, and the main body side sheet 32 and the highly stretchable portion 31H of the outer surface side sheet 31 are not joined.

好適に、おむつ１の腹側領域Ａでは、非伸縮性の本体側シート３２の非肌対向面に伸縮性の腹側外面側シート３１Ａが横方向Ｙに伸長状態で配され、図５に示すように、本体側シート３２及び腹側外面側シート３１Ａが、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２と腹側外面側シート３１Ａの伸長状態の高伸縮部位３１Ｈとが第１接合部位１ＪＴで接合されて腹側伸縮部ＷＡが形成されている。さらに、本体側シート３２及び腹側外面側シート３１Ａが、吸収体２３よりも外方の吸収体２３と重ならない領域２３ＮＴでは、図６（ａ）に示すように、本体側シート３２と腹側外面側シート３１Ａの伸長状態の低伸縮部位３１Ｌとが第２接合部位２ＪＴで接合され且つ本体側シート３２と腹側外面側シート３１Ａの高伸縮部位３１Ｈとが接合されずに腹側伸縮部ＷＡが形成されている、おむつ１の腹側領域Ａにおいて、「吸収体２３と重ならない領域２３ＮＴ」とは、図２に示すように、吸収性本体２を構成する吸収体２３の縦方向（Ｘ方向）の前端部２３Ａの外端２３Ａ１よりも縦方向Ｘの外方（横中心線ＣＬ２側と反対側）に位置するエンドフラップ部分である。そして、該エンドフラップ部分に加えて、吸収体２３の縦方向（Ｘ方向）に沿う両側部よりも横方向Ｙ外方であって、該エンドフラップ部分の縦方向Ｘの下端とサイドシール部５の下端との間に位置するサイドフラップ部分を加えた領域を意味する。 Preferably, in the ventral region A of the diaper 1, the elastic ventral outer surface side sheet 31A is arranged on the non-skin facing surface of the non-stretchable main body side sheet 32 in a laterally extended state, and is shown in FIG. As described above, in the region 23PT where the main body side sheet 32 and the ventral outer surface side sheet 31A overlap with the absorber 23, the main body side sheet 32 and the highly stretchable portion 31H in the extended state of the ventral outer surface side sheet 31A are the first joint portion 1JT. The ventral telescopic portion WA is formed by being joined with. Further, in the region 23NT where the main body side sheet 32 and the ventral outer surface side sheet 31A do not overlap with the absorber 23 outside the absorber 23, as shown in FIG. 6A, the main body side sheet 32 and the ventral outer surface The low stretchable portion 31L in the stretched state of the side sheet 31A is joined by the second joint portion 2JT, and the main body side sheet 32 and the high stretchable portion 31H of the ventral outer surface side sheet 31A are not joined, and the ventral stretchable portion WA is formed. In the ventral region A of the diaper 1, the "region 23NT that does not overlap with the absorber 23" is, as shown in FIG. 2, the vertical direction (X direction) of the absorber 23 constituting the absorbent body 2. It is an end flap portion located on the outer side (opposite side of the horizontal center line CL2 side) in the vertical direction X from the outer end 23A1 of the front end portion 23A of the above. Then, in addition to the end flap portion, the lower end of the end flap portion in the vertical direction X and the side seal portion 5 are laterally Y outward from both side portions along the vertical direction (X direction) of the absorber 23. It means the area including the side flap part located between the lower end and the lower end of the.

図５に示す腹側領域Ａと同様に、おむつ１の背側領域Ｂでは、非伸縮性の本体側シート３２の非肌対向面に伸縮性の背側外面側シート３１Ｂが横方向Ｙに伸長状態で配され、本体側シート３２及び背側外面側シート３１Ｂが、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２と背側外面側シート３１Ｂの伸長状態の高伸縮部位３１Ｈとが第１接合部位１ＪＴで接合されて背側伸縮部ＷＢが形成されている。さらに、本体側シート３２及び伸長状態の背側外面側シート３１Ｂが、吸収体２３よりも外方の吸収体２３と重ならない領域２３ＮＴでは、図６（ａ）に示す腹側領域Ａと同様に、本体側シート３２と背側外面側シート３１Ｂの伸長状態の低伸縮部位３１Ｌとが第２接合部位２ＪＴで接合され且つ本体側シート３２と背側外面側シート３１Ｂの伸長状態の高伸縮部位３１Ｈとが接合されずに背側伸縮部ＷＢが形成されている。おむつ１の背側領域Ｂにおいて、「吸収体２３と重ならない領域２３ＮＴ」とは、おむつ１の腹側領域Ａと同様に、図２に示すように、吸収性本体２を構成する吸収体２３の縦方向（Ｘ方向）の後端部２３Ｂの外端２３Ｂ１よりも縦方向Ｘの外方（横中心線ＣＬ２側と反対側）に位置するエンドフラップ部分である。そして、該エンドフラップ部分に加えて、吸収体２３の縦方向（Ｘ方向）に沿う両側部よりも横方向Ｙ外方であって、該エンドフラップ部分の縦方向Ｘの下端とサイドシール部５の下端との間に位置するサイドフラップ部分を加えた領域を意味する。 Similar to the ventral region A shown in FIG. 5, in the dorsal region B of the diaper 1, the stretchable dorsal outer surface side seat 31B extends laterally Y on the non-skin facing surface of the non-stretchable main body side seat 32. In the region 23PT where the main body side sheet 32 and the dorsal outer surface side sheet 31B overlap with the absorber 23, the main body side sheet 32 and the highly stretchable portion 31H of the dorsal outer surface side sheet 31B are first. The dorsal telescopic portion WB is formed by being joined at the joining portion 1JT. Further, in the region 23NT where the main body side seat 32 and the extended dorsal outer surface side seat 31B do not overlap with the absorber 23 outside the absorber 23, the same as the ventral region A shown in FIG. 6A. , The main body side sheet 32 and the dorsal outer surface side sheet 31B in the extended state low expansion / contraction portion 31L are joined by the second joint portion 2JT, and the main body side sheet 32 and the back side outer surface side sheet 31B in the extended state high expansion / contraction portion 31H. The dorsal telescopic portion WB is formed without being joined. In the dorsal region B of the diaper 1, the “region 23NT that does not overlap with the absorber 23” is the absorber 23 constituting the absorbent body 2 as shown in FIG. 2, similarly to the ventral region A of the diaper 1. It is an end flap portion located outside the vertical direction X (opposite to the horizontal center line CL2 side) with respect to the outer end 23B1 of the rear end portion 23B in the vertical direction (X direction). Then, in addition to the end flap portion, the lower end of the end flap portion in the vertical direction X and the side seal portion 5 are laterally Y outward from both side portions along the vertical direction (X direction) of the absorber 23. It means the area including the side flap part located between the lower end and the lower end of the.

このように、おむつ１の腹側伸縮部ＷＡ及び背側伸縮部ＷＢでは、それぞれ、図５に示すように、非伸縮性の本体側シート３２と伸縮性を有する外面側シート３１とが、吸収体２３と重なる領域２３ＰＴにおいては、本体側シート３２と外面側シート３１の伸長状態の高伸縮部位３１Ｈとで接合されている。その為、吸収体２３と重なる領域２３ＰＴにおいては、外面側シート３１の伸長状態を解除しても、高伸縮部位３１Ｈの収縮が阻害され易く、おむつ１には、吸収体２３に皺が発生し難く、吸収体２３の吸収性能が阻害され難い。 As described above, in the ventral stretchable portion WA and the dorsal stretchable portion WB of the diaper 1, as shown in FIG. 5, the non-stretchable main body side sheet 32 and the stretchable outer surface side sheet 31 absorb each other. In the region 23PT that overlaps with the body 23, the main body side sheet 32 and the stretched high expansion / contraction portion 31H of the outer surface side sheet 31 are joined. Therefore, in the region 23PT that overlaps with the absorber 23, even if the stretched state of the outer surface side sheet 31 is released, the contraction of the highly stretchable portion 31H is likely to be inhibited, and the diaper 1 has wrinkles on the absorber 23. It is difficult, and the absorption performance of the absorber 23 is not easily impaired.

また、おむつ１の腹側伸縮部ＷＡ及び背側伸縮部ＷＢでは、それぞれ、図６（ａ）に示すように、吸収体２３と重ならない領域２３ＮＴにおいては、おむつ１の外面を形成する伸縮性の外面側シート３１の伸長状態の低伸縮部位３１Ｌと本体側シート３２とで接合され且つ外面側シート３１の高伸縮部位３１Ｈと本体側シート３２とで接合されていない。その為、吸収体２３と重ならない領域２３ＮＴにおいては、図６（ｂ）に示すように外面側シート３１の伸長状態を解除すると、高伸縮部位３１Ｈの収縮が阻害され難く、おむつ１の外面を形成する外面側シート３１に皺が発生し難く、おむつ１の外面の見栄えが良い。また、外面側シート３１の伸長状態を解除すると、図６（ｂ）に示すように、高伸縮部位３１Ｈの収縮により、高伸縮部位３１Ｈに隣り合う一対の低伸縮部位３１Ｌ，３１Ｌで接合された本体側シート３２の部分どうしの間の本体側シート３２の部分が肌対向面側に膨らむように変形し易いため、高伸縮部位３１Ｈとの間に空間Ｇが形成され易く、その結果肌触りが良好になり易くなり、また、通気性が向上し、使用感が向上する。特に、おむつ１では、本体側シート３２が非伸縮性のシートである為、高伸縮部位３１Ｈとの間に空間Ｇが更に形成され易く、肌触りが良好になり易く、通気性が更に向上し、使用感が更に向上する。 Further, in the ventral stretchable portion WA and the dorsal stretchable portion WB of the diaper 1, as shown in FIG. 6A, the stretchability forming the outer surface of the diaper 1 is formed in the region 23NT that does not overlap with the absorber 23, respectively. The low expansion / contraction portion 31L of the outer surface side sheet 31 in the stretched state and the main body side sheet 32 are joined, and the high expansion / contraction portion 31H of the outer surface side sheet 31 and the main body side sheet 32 are not joined. Therefore, in the region 23NT that does not overlap with the absorber 23, when the stretched state of the outer surface side sheet 31 is released as shown in FIG. 6B, the contraction of the highly stretchable portion 31H is less likely to be inhibited, and the outer surface of the diaper 1 is covered. Wrinkles are less likely to occur on the outer surface side sheet 31 to be formed, and the outer surface of the diaper 1 has a good appearance. Further, when the stretched state of the outer surface side sheet 31 is released, as shown in FIG. 6B, due to the contraction of the high stretchable portion 31H, the pair of low stretchable portions 31L and 31L adjacent to the high stretchable portion 31H are joined. Since the portion of the main body side sheet 32 between the portions of the main body side sheet 32 is easily deformed so as to bulge toward the skin facing surface side, a space G is likely to be formed between the main body side sheet 32 and the highly stretchable portion 31H, and as a result, the skin feels good. In addition, the air permeability is improved and the usability is improved. In particular, in the diaper 1, since the main body side sheet 32 is a non-stretchable sheet, a space G is more likely to be formed between the diaper 1 and the highly stretchable portion 31H, the touch is likely to be improved, and the air permeability is further improved. Usability is further improved.

おむつ１では、吸収体２３と重なる領域２３ＰＴにおいては、本体側シート３２と外面側シート３１とが伸縮シートの低伸縮部位３１Ｌで接合されていない第１非接合部位１ＮＪＴを形成している。即ち、吸収体２３と重なる領域２３ＰＴにおいては、図５に示すように、本体側シート３２と伸縮シートで形成された外面側シート３１の低伸縮部位３１Ｌとが接合されていない。好適には、おむつ１の腹側領域Ａでは、本体側シート３２及び腹側外面側シート３１Ａが、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２と腹側外面側シート３１Ａの伸長状態の高伸縮部位３１Ｈとが第１接合部位１ＪＴにて接合されており、且つ本体側シート３２と腹側外面側シート３１Ａの低伸縮部位３１Ｌとが第１非接合部位１ＮＪＴにて接合されていない。同様に、おむつ１の背側領域Ｂでは、本体側シート３２及び背側外面側シート３１Ｂが、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２と背側外面側シート３１Ｂの伸長状態の高伸縮部位３１Ｈとが第１接合部位１ＪＴにて接合されており、且つ本体側シート３２と背側外面側シート３１Ｂの低伸縮部位３１Ｌとが第１非接合部位１ＮＪＴにて接合されていない。 In the diaper 1, in the region 23PT that overlaps with the absorber 23, the main body side sheet 32 and the outer surface side sheet 31 form a first non-joining portion 1NJT that is not joined at the low expansion / contraction portion 31L of the expansion / contraction sheet. That is, in the region 23PT that overlaps with the absorber 23, as shown in FIG. 5, the main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31 formed of the expansion / contraction sheet are not joined. Preferably, in the ventral region A of the diaper 1, the main body side sheet 32 and the ventral outer surface side sheet 31A are in a stretched state, and in the region 23PT where the main body side sheet 32 and the ventral outer surface side sheet 31A overlap with the absorber 23, the main body side sheet 32 and the ventral outer surface side sheet 31A are in a stretched state. The stretchable portion 31H is joined at the first joint portion 1JT, and the main body side sheet 32 and the low stretchable portion 31L of the ventral outer surface side sheet 31A are not joined at the first non-joint portion 1NJT. Similarly, in the dorsal region B of the diaper 1, the main body side sheet 32 and the dorsal outer surface side sheet 31B are in the stretched state, and in the region 23PT where the main body side sheet 32 and the dorsal outer surface side sheet 31B overlap with the absorber 23, the main body side sheet 32 and the dorsal outer surface side sheet 31B are in an extended state. The stretchable portion 31H is joined at the first joint portion 1JT, and the main body side sheet 32 and the low stretchable portion 31L of the dorsal outer surface side seat 31B are not joined at the first non-joint portion 1NJT.

おむつ１の吸収体２３と重なる領域２３ＰＴでは、図３に示すように、本体側シート３２及び外面側シート３１の第１接合部位１ＪＴと、本体側シート３２及び外面側シート３１の第１非接合部位１ＮＪＴとが、縦方向Ｘに連続して形成されており、横方向Ｙに交互に配されている。好適に、吸収体２３と重なる領域２３ＰＴでは、腹側外面側シート３１Ａ或いは背側外面側シート３１Ｂの高伸縮部位３１Ｈと本体側シート３２との第１接合部位１ＪＴが、縦方向Ｘに連続しており、腹側外面側シート３１Ａ或いは背側外面側シート３１Ｂの低伸縮部位３１Ｌと本体側シート３２との第１非接合部位１ＮＪＴが、縦方向Ｘに連続している。そして、縦方向Ｘに連続する第１接合部位１ＪＴと縦方向Ｘに連続する第１非接合部位１ＮＪＴとが横方向Ｙに交互に配されている。 In the region 23PT that overlaps with the absorber 23 of the diaper 1, as shown in FIG. 3, the first joint portion 1JT of the main body side sheet 32 and the outer surface side sheet 31 and the first non-joint of the main body side sheet 32 and the outer surface side sheet 31 are not joined. The portions 1NJT are continuously formed in the vertical direction X, and are arranged alternately in the horizontal direction Y. Preferably, in the region 23PT that overlaps with the absorber 23, the first joint portion 1JT between the highly elastic portion 31H of the ventral outer surface side sheet 31A or the dorsal outer surface side sheet 31B and the main body side sheet 32 is continuous in the vertical direction X. The first non-joining portion 1NJT between the low expansion / contraction portion 31L of the ventral outer surface side seat 31A or the dorsal outer surface side seat 31B and the main body side seat 32 is continuous in the vertical direction X. Then, the first joining portion 1JT continuous in the vertical direction X and the first non-joining portion 1NJT continuous in the vertical direction X are alternately arranged in the horizontal direction Y.

おむつ１では、吸収体２３と重なる領域２３ＰＴでは、図５に示すように、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとが第１非接合部位１ＮＪＴにて接合されておらず、本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが第１接合部位１ＪＴで接合されている。また、吸収体２３と重なる領域２３ＰＴでは、図３に示すように、本体側シート３２及び外面側シート３１の第１接合部位１ＪＴと、本体側シート３２及び外面側シート３１の第１非接合部位１ＮＪＴとが、縦方向Ｘに連続して形成されており、横方向Ｙに交互に配されている。その為、おむつ１には、吸収体２３に更に皺が発生し難く、吸収性能が更に阻害され難い。 In the diaper 1, in the region 23PT that overlaps with the absorber 23, as shown in FIG. 5, the main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31 are not joined by the first non-joining portion 1NJT. The main body side sheet 32 and the highly stretchable portion 31H of the outer surface side sheet 31 are joined by the first joining portion 1JT. Further, in the region 23PT overlapping the absorber 23, as shown in FIG. 3, the first joint portion 1JT of the main body side sheet 32 and the outer surface side sheet 31 and the first non-joint portion of the main body side sheet 32 and the outer surface side sheet 31. 1NJT and 1NJT are continuously formed in the vertical direction X, and are arranged alternately in the horizontal direction Y. Therefore, in the diaper 1, wrinkles are less likely to occur in the absorber 23, and the absorption performance is less likely to be impaired.

おむつ１では、吸収体２３よりも外方の吸収体２３と重ならない領域２３ＮＴでは、図６（ａ）に示すように、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとが第２接合部位２ＪＴにて接合され、本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが第２非接合部位２ＮＪＴにて接合されていない。重ならない領域２３ＮＴにおいても、図３に示すように、第２接合部位２ＪＴ及び第２非接合部位２ＮＪＴが、縦方向Ｘに連続しており、縦方向Ｘに連続する第２接合部位２ＪＴと縦方向Ｘに連続する第２非接合部位２ＮＪＴとが横方向Ｙに交互に配されている。また、ウエストの折り返し部に関しても同様に縦方向Ｘに連続する第２接合部位２ＪＴと縦方向Ｘに連続する第２非接合部位２ＮＪＴとが横方向Ｙに交互に配されている。おむつ１では、図３に示すように、吸収体２３に重なる領域２３ＰＴと吸収体２３に重ならない領域２３ＮＴとの縦方向Ｘの境界において、吸収体２３に重なる領域２３ＰＴに配された縦方向Ｘに連続する第１接合部位１ＪＴ及び第１非接合部位１ＮＪＴが、吸収体２３と重ならない領域２３ＮＴに配された縦方向Ｘに連続する第２接合部位２ＪＴ及び第２非接合部位２ＮＪＴと連続しておらず、分断している。このように吸収体２３に重なる領域２３ＰＴと吸収体２３に重ならない領域２３ＮＴとの縦方向Ｘの境界において、縦方向Ｘに連続する第１接合部位１ＪＴ及び第２接合部位２ＪＴが分断していると、吸収体２３に更に皺が発生し難く、吸収性能が更に阻害され難い。 In the diaper 1, in the region 23NT that does not overlap with the absorber 23 outside the absorber 23, as shown in FIG. 6A, the main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31 are second. It is joined at the joining portion 2JT, and the main body side sheet 32 and the highly elastic portion 31H of the outer surface side sheet 31 are not joined at the second non-joining portion 2NJT. Even in the non-overlapping region 23NT, as shown in FIG. 3, the second joint portion 2JT and the second non-joint portion 2NJT are continuous in the vertical direction X, and are continuous with the second joint portion 2JT in the vertical direction X. The second non-joining portion 2NJT continuous in the direction X is alternately arranged in the lateral direction Y. Similarly, with respect to the folded portion of the waist, the second joint portion 2JT continuous in the vertical direction X and the second non-joint portion 2NJT continuous in the vertical direction X are alternately arranged in the horizontal direction Y. In the diaper 1, as shown in FIG. 3, at the boundary of the vertical direction X between the region 23PT overlapping the absorber 23 and the region 23NT not overlapping the absorber 23, the vertical direction X arranged in the region 23PT overlapping the absorber 23. The first joint site 1JT and the first non-joint site 1NJT that are continuous with the second joint site 2JT and the second non-joint site 2NJT that are continuous in the vertical direction X arranged in the region 23NT that does not overlap with the absorber 23. Not, it is divided. In this way, at the boundary of the region 23PT that overlaps the absorber 23 and the region 23NT that does not overlap the absorber 23 in the vertical direction X, the first joint portion 1JT and the second joint portion 2JT that are continuous in the vertical direction X are separated. Then, wrinkles are less likely to occur in the absorber 23, and the absorption performance is less likely to be impaired.

吸収体２３に重なる領域２３ＰＴにおいて吸収体２３に更に皺が発生し難く、吸収性能が更に阻害され難くする観点からは、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２及び外面側シート３１の第１接合部位１ＪＴは、外面側シート３１の高伸縮部位３１Ｈの全域に形成されていることが好ましい。好適には、おむつ１を展開させかつ伸長させた状態において、腹側外面側シート３１Ａ或いは背側外面側シート３１Ｂの高伸縮部位３１Ｈを平面視して、該高伸縮部位３１Ｈの輪郭で囲まれた領域内全域に第１接合部位１ＪＴが形成されていることが好ましい。 From the viewpoint that wrinkles are less likely to occur in the absorber 23 in the region 23PT overlapping the absorber 23 and the absorption performance is less likely to be impaired, in the region 23PT overlapping the absorber 23, the main body side sheet 32 and the outer surface side sheet 31 The first joint portion 1JT is preferably formed over the entire area of the highly stretchable portion 31H of the outer surface side sheet 31. Preferably, in a state where the diaper 1 is unfolded and stretched, the highly stretchable portion 31H of the ventral outer surface side sheet 31A or the dorsal outer surface side sheet 31B is viewed in a plan view and surrounded by the contour of the highly stretchable portion 31H. It is preferable that the first joint portion 1JT is formed in the entire region.

また、おむつ１では、図５に示すように、吸収性本体２及び外装体３との固定部位の位置、即ち本体固定用接着剤４の塗工位置と、吸収体２３と重なる領域２３ＰＴにおける本体側シート３２及び外面側シート３１の第１接合部位１ＪＴの位置とが重なっている。このように重なっていれば、吸収体２３に重なる領域２３ＰＴにおいて吸収体２３に更に皺が発生し難くなる。図５に示すように断面視して、吸収体２３に皺が発生し難くなるとの観点から、本体固定用接着剤４の塗工部分と第１接合部位１ＪＴとは、横方向Ｙに一部重なっていればよいが、本体固定用接着剤４の塗工部分の横方向Ｙの範囲内に第１接合部位１ＪＴの横方向Ｙの全域が含まれていることが好ましい。 Further, in the diaper 1, as shown in FIG. 5, the position of the fixing portion between the absorbent main body 2 and the exterior body 3, that is, the coating position of the main body fixing adhesive 4, and the main body in the region 23PT overlapping the absorbent body 23. The positions of the first joint portion 1JT of the side sheet 32 and the outer surface side sheet 31 overlap. If they overlap in this way, wrinkles are less likely to occur in the absorber 23 in the region 23PT that overlaps with the absorber 23. As shown in FIG. 5, from the viewpoint that wrinkles are less likely to occur on the absorber 23 when viewed in cross section, the coated portion of the main body fixing adhesive 4 and the first joint portion 1JT are partially formed in the lateral direction Y. Although they may overlap, it is preferable that the entire area of the first joint portion 1JT in the lateral direction Y is included in the range of the coated portion of the main body fixing adhesive 4 in the lateral direction Y.

上述した効果を一層奏する観点から、おむつ１では、以下の構成の１つ又は複数を備えていることが好ましい。 From the viewpoint of further exerting the above-mentioned effects, the diaper 1 preferably has one or more of the following configurations.

おむつ１を展開させかつ伸長させた状態を図２に示すように平面視して、腹側領域Ａに関し、吸収体２３と重ならない領域２３ＮＴの横方向Ｙの長さの総和（各前記サイドフラップ部分の横方向Ｙの長さの総和）に対する吸収体２３と重なる領域２３ＰＴの横方向Ｙの長さの割合（（Ｌ23PT／Ｌ23NT）×１００）は、吸収体にしわが発生するのを防止し吸収性能の低下を防ぐ観点から、２０％以上であることが好ましく、３０％以上であることが更に好ましく、そして、６５％以下であることが好ましく、５５％以下であることが更に好ましく、具体的には、２０％以上６５％以下であることが好ましく、３０％以上５５％以下であることが更に好ましい。そして、背側領域Ｂに関しても同様に、吸収体２３と重ならない領域２３ＮＴの横方向Ｙの長さの総和（各前記サイドフラップ部分の横方向Ｙの長さの総和）に対する吸収体２３と重なる領域２３ＰＴの横方向Ｙの長さの割合（（Ｌ23PT／Ｌ23NT）×１００）は、２０％以上であることが好ましく、３０％以上であることが更に好ましく、そして、６５％以下であることが好ましく、５５％以下であることが更に好ましく、具体的には、２０％以上６５％以下であることが好ましく、３０％以上５５％以下であることが更に好ましい。 The unfolded and stretched state of the diaper 1 is viewed in a plan view as shown in FIG. 2, and the sum of the lengths of the lateral regions Y of the regions 23NT that do not overlap with the absorber 23 with respect to the ventral region A (each of the side flaps). The ratio of the lateral Y length of the region 23PT ((L 23PT / L 23NT ) × 100) that overlaps with the absorber 23 to the total lateral Y length of the portion) prevents the absorber from wrinkling. From the viewpoint of preventing deterioration of absorption performance, it is preferably 20% or more, more preferably 30% or more, more preferably 65% or less, still more preferably 55% or less. Specifically, it is preferably 20% or more and 65% or less, and more preferably 30% or more and 55% or less. Similarly, the dorsal region B also overlaps with the absorber 23 with respect to the sum of the lateral Y lengths of the region 23NT that does not overlap with the absorber 23 (the sum of the lateral Y lengths of the side flap portions). The ratio of the length of the lateral Y of the region 23PT ((L 23PT / L 23NT ) × 100) is preferably 20% or more, more preferably 30% or more, and 65% or less. It is preferably 55% or less, more preferably 20% or more and 65% or less, and further preferably 30% or more and 55% or less.

おむつ１を展開させかつ伸長させた状態を図２に示すように平面視して、腹側領域Ａに関し、吸収体２３と重なる領域２３ＰＴの面積（Ｓ23PT）に対する、本体側シート３２と腹側外面側シート３１Ａの高伸縮部位３１Ｈとの接合部位である各第１接合部位１ＪＴの面積の総和（Ｓ1JT）の割合（（Ｓ1JT／Ｓ23PT）×１００）は、２５％以上であることが好ましく、３５％以上であることが更に好ましく、そして、７０％以下であることが好ましく、６０％以下であることが更に好ましく、具体的には、２５％以上７０％以下であることが好ましく、３５％以上６０％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 The unfolded and stretched state of the diaper 1 is viewed in a plan view as shown in FIG. 2, and the main body side sheet 32 and the ventral outer surface with respect to the ventral region A with respect to the area (S 23PT) of the region 23PT overlapping the absorber 23. The ratio ((S 1JT / S 23PT ) × 100) of the total area (S 1JT ) of each first joining site 1JT, which is the joining site of the side sheet 31A to the highly elastic portion 31H, must be 25% or more. It is preferably 35% or more, more preferably 70% or less, further preferably 60% or less, and specifically, 25% or more and 70% or less. It is more preferably 35% or more and 60% or less. The dorsal region B is the same as the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図５に示すように断面視して、腹側領域Ａの吸収体２３と重なる領域２３ＰＴに関し、外面側シート３１の高伸縮部位３１Ｈの横方向Ｙの長さ（Ｗ２）に対する、本体側シート３２と腹側外面側シート３１Ａの高伸縮部位３１Ｈとの接合部位である第１接合部位１ＪＴの横方向Ｙの長さ（Ｗ１）の割合（（Ｗ１／Ｗ２）×１００）は、６０％以上であることが好ましく、８０％以上であることが更に好ましく、そして、１５０％以下であることが好ましく、１２０％以下であることが更に好ましく、具体的には、６０％以上１５０％以下であることが好ましく、８０％以上１２０％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。
このような範囲にすることにより、吸収体にしわが発生するのを防止するだけでなく、防漏シートとの未接着部位を作ることにより隙間ができ、通気性が向上するという効果をより奏しやすい。 Further, when the state in which the diaper 1 is expanded and extended is viewed in cross section as shown in FIG. 5, the lateral direction of the highly stretchable portion 31H of the outer surface side sheet 31 with respect to the region 23PT overlapping the absorber 23 of the ventral region A. The ratio of the length (W1) of the first joint portion 1JT, which is the joint portion between the main body side sheet 32 and the highly elastic portion 31H of the ventral outer surface side sheet 31A, to the length (W2) of Y in the lateral direction ((W1). / W2) × 100) is preferably 60% or more, more preferably 80% or more, and more preferably 150% or less, further preferably 120% or less, and specifically. Is preferably 60% or more and 150% or less, and more preferably 80% or more and 120% or less. The dorsal region B is the same as the ventral region A.
By setting this range, not only can the absorber be prevented from wrinkling, but also a gap is created by creating a non-adhesive portion with the leak-proof sheet, which makes it easier to achieve the effect of improving air permeability. ..

また、おむつ１を展開させかつ伸長させた状態を図５に示すように断面視して、腹側領域Ａの吸収体２３と重なる領域２３ＰＴに関し、外面側シート３１の低伸縮部位３１Ｌの横方向Ｙの長さ（Ｗ３）に対する、本体側シート３２と腹側外面側シート３１Ａの高伸縮部位３１Ｈとの接合部位である第１接合部位１ＪＴの横方向Ｙの長さ（Ｗ１）の割合（（Ｗ１／Ｗ３）×１００）は、５０％以上であることが好ましく、７０％以上であることが更に好ましく、そして、１４０％以下であることが好ましく、１２０％以下であることが更に好ましく、具体的には、５０％以上１４０％以下であることが好ましく、７０％以上１２０％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 Further, when the state in which the diaper 1 is expanded and extended is viewed in cross section as shown in FIG. 5, the lateral direction of the low expansion / contraction portion 31L of the outer surface side sheet 31 with respect to the region 23PT overlapping the absorber 23 of the ventral region A. The ratio of the length (W1) of the first joint portion 1JT, which is the joint portion between the main body side sheet 32 and the highly elastic portion 31H of the ventral outer surface side sheet 31A, to the length (W3) of Y in the lateral direction ((W1). / W3) × 100) is preferably 50% or more, more preferably 70% or more, more preferably 140% or less, still more preferably 120% or less, and specifically. Is preferably 50% or more and 140% or less, and more preferably 70% or more and 120% or less. The dorsal region B is the same as the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図５に示すように断面視して、腹側領域Ａの吸収体２３と重なる領域２３ＰＴに関し、吸収性本体２と外装体３との固定部位である本体固定用接着剤４の横方向Ｙの長さ（Ｗ４）に対する、外面側シート３１の高伸縮部位３１Ｈの横方向Ｙの長さ（Ｗ２）の割合（（Ｗ２／Ｗ４）×１００）は、６０％以上であることが好ましく、８０％以上であることが更に好ましく、そして、１５０％以下であることが好ましく、１２０％以下であることが更に好ましく、具体的には、６０％以上１５０％以下であることが好ましく、８０％以上１２０％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 Further, when the state in which the diaper 1 is unfolded and stretched is viewed in cross section as shown in FIG. 5, the fixing portion between the absorbent body 2 and the exterior body 3 with respect to the region 23PT overlapping the absorber 23 in the ventral region A. The ratio of the lateral Y length (W2) of the highly stretchable portion 31H of the outer surface side sheet 31 to the lateral Y length (W4) of the main body fixing adhesive 4 ((W2 / W4) × 100). Is preferably 60% or more, more preferably 80% or more, and further preferably 150% or less, further preferably 120% or less, specifically 60% or more. It is preferably 150% or less, and more preferably 80% or more and 120% or less. The dorsal region B is the same as the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図２に示すように平面視して、腹側領域Ａに関し、吸収体２３と重ならない領域２３ＮＴの面積（Ｓ23NT）に対する、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとの接合部位である各第２接合部位２ＪＴの面積の総和（Ｓ2JT）の割合（（Ｓ2JT／Ｓ23NT）×１００）は、２０％以上であることが好ましく、３５％以上であることが更に好ましく、そして、７５％以下であることが好ましく、６５％以下であることが更に好ましく、具体的には、２０％以上７５％以下であることが好ましく、３５％以上６５％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。
このような範囲にすることにより、ホットメルト塗工量を低減し、剛性を低減させることで風合いが向上する効果をより奏しやすい。 Further, the state in which the diaper 1 is expanded and extended is viewed in a plan view as shown in FIG. 2, and the main body side sheet 32 with respect to the ventral region A with respect to the area (S 23NT) of the region 23NT that does not overlap with the absorber 23. The ratio ((S 2JT / S 23NT ) × 100) of the total area (S 2JT ) of each second joint portion 2JT, which is the joint portion between the outer surface side sheet 31 and the low expansion / contraction portion 31L, is 20% or more. It is preferably 35% or more, more preferably 75% or less, further preferably 65% or less, and specifically, 20% or more and 75% or less. It is preferably 35% or more and 65% or less, more preferably. The dorsal region B is the same as the ventral region A.
Within such a range, the amount of hot melt coating applied is reduced, and the effect of improving the texture by reducing the rigidity is more likely to be achieved.

また、おむつ１を展開させかつ伸長させた状態を図２に示すように平面視して、腹側領域Ａに関し、吸収体２３と重ならない領域２３ＮＴの面積（Ｓ23NT）に対する、本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが接合されていない部位である各第２非接合部位２ＮＪＴの面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ23NT）×１００）は、２５％以上であることが好ましく、３５％以上であることが更に好ましく、そして、８０％以下であることが好ましく、６５％以下であることが更に好ましく、具体的には、２５％以上８０％以下であることが好ましく、３５％以上６５％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。
このような範囲にすることにより、ホットメルト塗工量を低減し、剛性を低減させることで風合いが向上する効果をより奏しやすい。 Further, the state in which the diaper 1 is expanded and extended is viewed in a plan view as shown in FIG. 2, and the main body side sheet 32 with respect to the ventral region A with respect to the area (S 23NT) of the region 23NT that does not overlap with the absorber 23. The ratio ((S 2NJT / S 23NT ) × 100) of the total area (S 2NJT ) of each second non-joining portion 2NJT, which is a portion where the high expansion / contraction portion 31H of the outer surface side sheet 31 is not joined, is 25. % Or more, more preferably 35% or more, more preferably 80% or less, still more preferably 65% or less, specifically 25% or more and 80% or less. It is preferably 35% or more and 65% or less. The dorsal region B is the same as the ventral region A.
Within such a range, the amount of hot melt coating applied is reduced, and the effect of improving the texture by reducing the rigidity is more likely to be achieved.

さらに、おむつ１を展開させかつ伸長させた状態を図２に示すように平面視して、腹側領域Ａの吸収体２３と重ならない領域２３ＮＴに関し、各第２接合部位２ＪＴの面積の総和（Ｓ2JT）に対する、各第２非接合部位２ＮＪＴの面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ2JT）×１００）は、１００％以上であることが好ましく、２００％以上であることが更に好ましく、そして、１０００％以下であることが好ましく、８００％以下であることが更に好ましく、具体的には、１００％以上１０００％以下であることが好ましく、２００％以上８００％以下であることが更に好ましい。尚、背側領域Ｂの吸収体２３と重ならない領域２３ＮＴに関しても、腹側領域Ａの吸収体２３と重ならない領域２３ＮＴと同様である。 Further, the unfolded and stretched state of the diaper 1 is viewed in a plan view as shown in FIG. for S 2JT), it (the proportion of S 2NJT) ((S 2NJT / S 2JT) the sum of the areas of each of the second non-joint zones 2NJT × 100) is preferably 100% or more, 200% or more Is more preferably, and is preferably 1000% or less, more preferably 800% or less, specifically, 100% or more and 1000% or less, and 200% or more and 800% or less. Is even more preferable. The region 23NT that does not overlap with the absorber 23 in the dorsal region B is the same as the region 23NT that does not overlap with the absorber 23 in the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図６（ａ）に示すように断面視して、腹側領域Ａの吸収体２３と重ならない領域２３ＮＴに関し、外面側シート３１の高伸縮部位３１Ｈの横方向Ｙの長さ（Ｗ２）に対する、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとの接合部位である第２接合部位２ＪＴの横方向Ｙの長さ（Ｗ５）の割合（（Ｗ５／Ｗ２）×１００）は、５０％以上であることが好ましく、７０％以上であることが更に好ましく、そして、１５０％以下であることが好ましく、１００％以下であることが更に好ましく、具体的には、５０％以上１５０％以下であることが好ましく、７０％以上１００％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 Further, when the state in which the diaper 1 is unfolded and stretched is viewed in cross section as shown in FIG. The ratio of the lateral Y length (W5) of the second joint portion 2JT, which is the joint portion between the main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31, with respect to the lateral Y length (W2) of 31H. ((W5 / W2) × 100) is preferably 50% or more, more preferably 70% or more, more preferably 150% or less, still more preferably 100% or less. Specifically, it is preferably 50% or more and 150% or less, and more preferably 70% or more and 100% or less. The dorsal region B is the same as the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図６（ａ）に示すように断面視して、腹側領域Ａの吸収体２３と重ならない領域２３ＮＴに関し、外面側シート３１の低伸縮部位３１Ｌの横方向Ｙの長さ（Ｗ３）に対する、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとの接合部位である第２接合部位２ＪＴの横方向Ｙの長さ（Ｗ５）の割合（（Ｗ５／Ｗ３）×１００）は、４０％以上であることが好ましく、７０％以上であることが更に好ましく、そして、１４０％以下であることが好ましく、１００％以下であることが更に好ましく、具体的には、４０％以上１４０％以下であることが好ましく、７０％以上１００％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 Further, when the state in which the diaper 1 is expanded and extended is viewed in cross section as shown in FIG. 6A, the low expansion / contraction portion of the outer surface side sheet 31 with respect to the region 23NT that does not overlap with the absorber 23 in the ventral region A. The ratio of the lateral Y length (W5) of the second joint portion 2JT, which is the joint portion between the main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31, with respect to the lateral Y length (W3) of 31L. ((W5 / W3) × 100) is preferably 40% or more, more preferably 70% or more, more preferably 140% or less, still more preferably 100% or less. Specifically, it is preferably 40% or more and 140% or less, and more preferably 70% or more and 100% or less. The dorsal region B is the same as the ventral region A.

また、おむつ１を展開させかつ伸長させた状態を図５及び図６（ａ）に示すように断面視して、腹側領域Ａに関し、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとの接合部位である第２接合部位２ＪＴの横方向Ｙの長さ（Ｗ５）に対する、本体側シート３２と腹側外面側シート３１Ａの高伸縮部位３１Ｈとの接合部位である第１接合部位１ＪＴの横方向Ｙの長さ（Ｗ１）の割合（（Ｗ１／Ｗ５）×１００）は、５０％以上であることが好ましく、７０％以上であることが更に好ましく、そして、２００％以下であることが好ましく、１５０％以下であることが更に好ましく、具体的には、５０％以上２００％以下であることが好ましく、７０％以上１５０％以下であることが更に好ましい。尚、背側領域Ｂに関しても、腹側領域Ａと同様である。 Further, the state in which the diaper 1 is unfolded and stretched is viewed in cross section as shown in FIGS. 5 and 6A, and the low expansion / contraction portion 31L of the main body side sheet 32 and the outer surface side sheet 31 with respect to the ventral region A. Of the first joint portion 1JT, which is a joint portion between the main body side sheet 32 and the highly elastic portion 31H of the ventral outer surface side sheet 31A with respect to the length (W5) of the second joint portion 2JT, which is the joint portion with and in the lateral direction Y. The ratio ((W1 / W5) × 100) of the length (W1) in the lateral direction is preferably 50% or more, more preferably 70% or more, and more preferably 200% or less. It is more preferably 150% or less, more preferably 50% or more and 200% or less, and further preferably 70% or more and 150% or less. The dorsal region B is the same as the ventral region A.

上述したおむつ１の各部の形成材料について説明する。
吸収性本体２を構成する表面シート２１、裏面シート２２、吸収体２３及び防漏カフ２４等としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のもの等を特に制限なく用いることができる。例えば、表面シート２１としては、単層又は多層構造の不織布や、開孔フィルム等を用いることができる。裏面シート２２としては、透湿性の樹脂フィルム等を用いることができる。吸収体２３としては、吸収性ポリマーの粒子及び繊維材料から構成された吸収性材料からなる吸収性コアをティッシュペーパーによって被覆されているものを用いることができる。また、防漏カフ２４としては、撥水性の単層又は多層構造の不織布等を用いることができる。 The material for forming each part of the diaper 1 described above will be described.
As the front surface sheet 21, back surface sheet 22, absorber 23, leak-proof cuff 24, etc. constituting the absorbent body 2, various items conventionally used for absorbent articles such as disposable diapers shall be used without particular limitation. Can be done. For example, as the surface sheet 21, a non-woven fabric having a single-layer or multi-layer structure, a perforated film, or the like can be used. As the back sheet 22, a moisture-permeable resin film or the like can be used. As the absorber 23, one in which an absorbent core made of an absorbent material composed of particles of the absorbent polymer and a fiber material is coated with tissue paper can be used. Further, as the leak-proof cuff 24, a water-repellent single-layer or multi-layered non-woven fabric or the like can be used.

弾性部材（防漏カフ形成用弾性部材２５、ウエスト弾性部材３３、レッグ弾性部材３４等）としては、例えば、スチレン−ブタジエン、ブタジエン、イソプレン、ネオプレン等の合成ゴム、天然ゴム、ＥＶＡ、伸縮性ポリオレフィン、ポリウレタン等を挙げることができる。弾性部材の形態としては、断面が矩形、正方形、円形、楕円形、若しくは多角形状等の糸状（糸ゴム等）、又は紐状（平ゴム等）のもの等を好ましく用いることができる。 Examples of the elastic member (elastic member 25 for forming a leak-proof cuff, waist elastic member 33, leg elastic member 34, etc.) include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, and elastic polyolefin. , Polyethylene and the like. As the form of the elastic member, a thread-like (thread rubber or the like) or a string-like (flat rubber or the like) having a rectangular, square, circular, oval, or polygonal cross section can be preferably used.

本体固定用接着剤４、又はレッグ弾性部材３４を固定する帯状の接着剤（不図示）としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のホットメルト接着剤等を特に制限なく用いることができる。本体固定用接着剤４の塗工は、例えば、コーターを用いて、吸収性本体２を構成する裏面シート２２の非肌対向面及び外装体３を構成する本体側シート３２の肌対向面の一方に塗工されている。 The band-shaped adhesive (not shown) for fixing the main body fixing adhesive 4 or the leg elastic member 34 is not particularly limited to various hot melt adhesives conventionally used for absorbent articles such as disposable diapers. Can be used. The main body fixing adhesive 4 is applied, for example, by using a coater on one of the non-skin facing surface of the back sheet 22 constituting the absorbent main body 2 and the skin facing surface of the main body side sheet 32 forming the exterior body 3. It is painted on.

本体側シート３２及び外面側シート３１の第１接合部位１ＪＴ及び第２接合部位２ＪＴは、使い捨ておむつ等の吸収性物品に従来用いられている各種のホットメルト接着剤等を、例えば、コーターを用いて塗工することにより形成できる。また、第１接合部位１ＪＴ及び第２接合部位２ＪＴは、熱エンボス加工、超音波シール加工、レーザー加工等を用いて形成できる。 The first joint portion 1JT and the second joint portion 2JT of the main body side sheet 32 and the outer surface side sheet 31 use various hot melt adhesives and the like conventionally used for absorbent articles such as disposable diapers, for example, a coater. It can be formed by painting. Further, the first joint portion 1JT and the second joint portion 2JT can be formed by using thermal embossing, ultrasonic sealing, laser processing, or the like.

サイドシール部５を形成する加工としては、熱エンボス加工、超音波シール加工、レーザー加工等が挙げられる。 Examples of the processing for forming the side seal portion 5 include thermal embossing processing, ultrasonic sealing processing, laser processing, and the like.

以上、本発明をその好ましい実施形態に基づき説明したが、本発明は上述した実施形態に制限されず適宜変更可能である。
例えば、上述したおむつ１では、図５及び図６に示すように、外面側シート３１が横方向（Ｙ方向）に伸縮性を有する伸縮シートで形成されており、且つ本体側シート３２が非伸縮性のシートで形成されているが、本体側シート３２が横方向（Ｙ方向）に伸縮性を有する伸縮シートで形成されており、且つ外面側シート３１が非伸縮性のシートで形成されていてもよく、本体側シート３２及び外面側シート３１が何れも横方向に伸縮性を有する伸縮シートで形成されていてもよい。本体側シート３２が伸縮シートの場合、肌に対して襞のない伸縮材が触れるため、ギャザー痕がつきにくくなる。 Although the present invention has been described above based on the preferred embodiment thereof, the present invention is not limited to the above-described embodiment and can be appropriately modified.
For example, in the above-mentioned diaper 1, as shown in FIGS. 5 and 6, the outer surface side sheet 31 is formed of an elastic sheet having elasticity in the lateral direction (Y direction), and the main body side sheet 32 is non-expandable. Although it is made of a flexible sheet, the main body side sheet 32 is formed of a stretchable sheet having elasticity in the lateral direction (Y direction), and the outer surface side sheet 31 is formed of a non-stretchable sheet. The main body side sheet 32 and the outer surface side sheet 31 may both be formed of a stretchable sheet having elasticity in the lateral direction. When the main body side sheet 32 is an elastic sheet, the elastic material without folds comes into contact with the skin, so that gather marks are less likely to be formed.

また、おむつ１では、腹側伸縮部ＷＡ及び背側伸縮部ＷＢの両方に、伸縮シートが配されているが、腹側伸縮部ＷＡ及び背側伸縮部ＷＢの何れか一方に、伸縮シートが配されていればよい。 Further, in the diaper 1, the elastic sheet is arranged on both the ventral elastic portion WA and the dorsal elastic portion WB, but the elastic sheet is provided on either the ventral elastic portion WA or the dorsal elastic portion WB. It suffices if it is arranged.

また、おむつ１では、図５に示すように、吸収体２３と重なる領域２３ＰＴでは、本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとが第１接合部位１ＪＴで接合されており、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとが第１非接合部位１ＮＪＴにて接合されていないが、本体側シート３２と外面側シート３１の高伸縮部位３１Ｈとの接合のみならず、本体側シート３２と外面側シート３１の低伸縮部位３１Ｌとが接合されていてもよい。即ち、吸収体２３と重なる領域２３ＰＴには、第１非接合部位１ＮＪＴが形成されていなくてもよい。 Further, in the diaper 1, as shown in FIG. 5, in the region 23PT overlapping the absorber 23, the main body side sheet 32 and the highly elastic portion 31H of the outer surface side sheet 31 are joined by the first joining portion 1JT, and the main body is formed. Although the side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31 are not joined at the first non-joining portion 1NJT, not only the main body side sheet 32 and the high expansion / contraction portion 31H of the outer surface side sheet 31 are joined, but also. The main body side sheet 32 and the low expansion / contraction portion 31L of the outer surface side sheet 31 may be joined. That is, the first non-bonded portion 1NJT may not be formed in the region 23PT that overlaps with the absorber 23.

また、上述した使い捨ておむつ１においては、図２に示すように、外装体３が腹側領域Ａ、股下領域Ｃ及び背側領域Ｂにわたる砂時計状等の連続した形状のパンツ型使い捨ておむつであるが、外装体３が、腹側外装体、背側外装体及び股下外装体に別部材として区分された分割型のパンツ型使い捨ておむつであってもよい。 Further, in the disposable diaper 1 described above, as shown in FIG. 2, the exterior body 3 is a pants-type disposable diaper having a continuous shape such as an hourglass covering the ventral region A, the inseam region C, and the dorsal region B. The exterior body 3 may be a split-type pants-type disposable diaper that is divided into a ventral exterior body, a dorsal exterior body, and an inseam exterior body as separate members.

また、上述した使い捨ておむつ１においては、図１に示すように、外装体３を有するパンツ型使い捨ておむつであるが、展開型の使い捨ておむつであってもよい。 Further, the disposable diaper 1 described above is a pants-type disposable diaper having an exterior body 3 as shown in FIG. 1, but may be a deployable disposable diaper.

また、上述した吸収性物品は、図１に示すように、パンツ型使い捨ておむつ１であるが、女性用のショーツタイプの生理用ナプキンであってもよい。 Further, as shown in FIG. 1, the above-mentioned absorbent article is a pants-type disposable diaper 1, but may be a shorts-type sanitary napkin for women.

上述した実施形態に関し、さらに以下の吸収性物品を開示する。 The following absorbent articles are further disclosed with respect to the above-described embodiments.

＜１＞
縦方向に腹側領域および背側領域と、それらの間に位置する股下領域とを備え、前記腹側領域と前記背側領域とに亘って吸収性材料を含む吸収体を具備する吸収性本体を有し、該腹側領域及び該背側領域それぞれに横方向に延びる腹側伸縮部及び背側伸縮部を有する吸収性物品であって、
前記腹側伸縮部及び前記背側伸縮部は、それぞれ、前記吸収性本体に接合される本体側シートと、該本体側シートの非肌対向面に配される外面側シートとを有し、
前記本体側シート及び前記外面側シートの少なくとも一方は、横方向に伸縮性を有する伸縮シートであり、
前記伸縮シートは、相対的に伸縮性の高い高伸縮部位と相対的に伸縮性の低い低伸縮部位とが横方向に交互に配されており、
前記腹側伸縮部及び前記背側伸縮部の少なくとも一方には、前記伸縮シートが配され、前記吸収体と重なる領域においては前記本体側シートと前記外面側シートとが前記高伸縮部位で接合される第１接合部位を形成し、前記吸収体よりも外方の該吸収体と重ならない領域においては該本体側シートと該外面側シートとが前記低伸縮部位で接合される第２接合部位を形成し且つ前記高伸縮部位で接合されていない第２非接合部位を形成している、吸収性物品。 <1>
An absorbent body comprising a ventral region and a dorsal region in the longitudinal direction and an inseam region located between them, and an absorber containing an absorbent material over the ventral region and the dorsal region. An absorbent article having a ventral stretchable portion and a dorsal stretchable portion extending laterally in the ventral region and the dorsal region, respectively.
The ventral stretchable portion and the dorsal stretchable portion each have a main body side sheet joined to the absorbent main body and an outer surface side sheet arranged on a non-skin facing surface of the main body side sheet.
At least one of the main body side sheet and the outer surface side sheet is a stretchable sheet having elasticity in the lateral direction.
In the elastic sheet, high elastic portions having relatively high elasticity and low elastic portions having relatively low elasticity are alternately arranged in the lateral direction.
The stretchable sheet is arranged on at least one of the ventral stretchable portion and the dorsal stretchable portion, and the main body side sheet and the outer surface side sheet are joined at the highly stretchable portion in a region overlapping the absorber. In the region outside the absorber that does not overlap with the absorber, the second joint portion where the main body side sheet and the outer surface side sheet are joined at the low expansion / contraction portion is formed. An absorbent article that forms a second non-bonded site that is formed and not joined at the highly stretchable site.

＜２＞
前記吸収体と重なる領域においては、前記本体側シートと前記外面側シートとが前記低伸縮部位で接合されていない第１非接合部位を形成し、該第１非接合部位と前記第１接合部位とが、縦方向に連続して形成されており、横方向に交互に配されている、前記＜１＞に記載の吸収性物品。
＜３＞
前記吸収体と重なる領域においては、前記第１接合部位は、前記高伸縮部位の全域に形成されている、前記＜１＞又は＜２＞に記載の吸収性物品。
＜４＞
前記本体側シート及び前記外面側シートは、一方が前記伸縮シートであり、他方が非伸縮性のシートである、前記＜１＞〜＜３＞の何れか１に記載の吸収性物品。
＜５＞
前記吸収性物品は、前記吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体を具備し、
前記外装体は、前記本体側シートと前記外面側シートとを有し、
前記吸収性本体及び前記外装体との固定部位の位置と、前記吸収体と重なる領域における前記第１接合部位の位置とが重なっている、前記＜１＞〜＜４＞の何れか１に記載の吸収性物品。 <2>
In the region overlapping the absorber, the main body side sheet and the outer surface side sheet form a first non-joining portion that is not joined at the low expansion / contraction portion, and the first non-joining portion and the first joining portion are formed. The absorbent article according to <1>, wherein the above-mentioned items are continuously formed in the vertical direction and alternately arranged in the horizontal direction.
<3>
The absorbent article according to <1> or <2>, wherein the first joint portion is formed in the entire area of the highly stretchable portion in the region overlapping the absorber.
<4>
The absorbent article according to any one of <1> to <3>, wherein one of the main body side sheet and the outer surface side sheet is the stretchable sheet and the other is a non-stretchable sheet.
<5>
The absorbent article comprises an exterior body that is arranged on the non-skin facing surface side of the absorbent body and fixes the absorbent body.
The exterior body has the main body side sheet and the outer surface side sheet.
4. The description in any one of <1> to <4>, wherein the position of the fixing portion between the absorbent body and the exterior body and the position of the first joining portion in the region overlapping the absorbent body overlap. Absorbent article.

＜６＞
前記外面側シートが横方向に伸縮性を有する伸縮シートであり、前記本体側シートは、伸縮性を有しておらず非伸縮性のシートである、前記＜１＞〜＜５＞の何れか１に記載の吸収性物品。
＜７＞
前記外面側シートは、前記腹側領域を構成する腹側外面側シートと、前記背側領域を構成する背側外面側シートとを含んで構成されており、
伸縮性の前記腹側外面側シート及び前記背側外面側シートは、弾性部材の延びる方向と同方向に伸縮可能になっている、前記＜１＞〜＜６＞の何れか１に記載の吸収性物品。
＜８＞
前記腹側伸縮部及び前記背側伸縮部は、それぞれ、非伸縮性の前記本体側シートと伸縮性を有する伸長状態の前記外面側シートとが、前記吸収体と重なる領域においては、前記第１接合部位が形成されている、前記＜１＞〜＜７＞の何れか１に記載の吸収性物品。
＜９＞
ウエストの折り返し部に関して、前記吸収体と重ならない領域においては、前記本体側シートと前記外面側シートの折り返し部とが前記第２接合部位を形成されており、該第２接合部位と、該本体側シート及び該外面側シートの折り返し部の前記第２非接合部位とが、縦方向に連続して形成されており、横方向に交互に配されている、前記＜２＞に記載の吸収性物品。
＜１０＞
前記吸収体に重なる領域と前記吸収体に重ならない領域との縦方向の境界において、縦方向に連続する前記第１接合部位及び前記第１非接合部位が、縦方向に連続する前記第２接合部位及び前記第２非接合部位と連続しておらず、分断している、前記＜９＞に記載の吸収性物品。
＜１１＞
前記腹側領域に関し、前記吸収体と重ならない領域の横方向の長さの総和に対する前記吸収体と重なる領域の横方向の長さの割合（（Ｌ23PT／Ｌ23NT）×１００）は、２０％以上、好ましくは３０％以上であり、そして、６５％以下、好ましくは５５％以下である、前記＜１＞〜＜１０＞の何れか１に記載の吸収性物品。 <6>
Any of the above <1> to <5>, wherein the outer surface side sheet is a stretchable sheet having elasticity in the lateral direction, and the main body side sheet is a non-stretchable sheet having no elasticity. The absorbent article according to 1.
<7>
The outer surface side sheet is configured to include a ventral outer surface side sheet constituting the ventral region and a dorsal outer surface side sheet constituting the dorsal region.
The absorption according to any one of <1> to <6>, wherein the elastic ventral outer surface side sheet and the dorsal outer surface side sheet can be expanded and contracted in the same direction as the extension direction of the elastic member. Sex goods.
<8>
The ventral stretchable portion and the dorsal stretchable portion are the first in a region where the non-stretchable main body side sheet and the stretchable outer surface side sheet overlap with the absorber, respectively. The absorbent article according to any one of <1> to <7>, wherein a joint portion is formed.
<9>
Regarding the folded portion of the waist, in the region that does not overlap with the absorber, the folded portion of the main body side sheet and the outer surface side sheet forms the second joint portion, and the second joint portion and the main body are formed. The absorbency according to <2>, wherein the side sheet and the second non-joining portion of the folded portion of the outer surface side sheet are continuously formed in the vertical direction and alternately arranged in the horizontal direction. Goods.
<10>
At the vertical boundary between the region that overlaps the absorber and the region that does not overlap the absorber, the first joint portion and the first non-joint portion that are continuous in the vertical direction are the second joint that is continuous in the vertical direction. The absorbent article according to <9>, which is not continuous with the site and the second non-joining site and is divided.
<11>
With respect to the ventral region, the ratio of the lateral length of the region overlapping the absorber to the total lateral length of the region not overlapping the absorber ((L 23PT / L 23NT ) × 100) is 20. % Or more, preferably 30% or more, and 65% or less, preferably 55% or less, according to any one of <1> to <10>.

＜１２＞
前記背側領域に関し、前記吸収体と重ならない領域の横方向の長さの総和に対する前記吸収体と重なる領域の横方向の長さの割合（（Ｌ23PT／Ｌ23NT）×１００）は、２０％以上、好ましくは３０％以上であり、そして、６５％以下、好ましくは５５％以下である、前記＜１＞〜＜１１＞の何れか１に記載の吸収性物品。
＜１３＞
前記腹側領域及び前記背側伸縮部の少なくとも一方に関し、前記吸収体と重なる領域の面積（Ｓ23PT）に対する、前記第１接合部位の面積の総和（Ｓ1JT）の割合（（Ｓ1JT／Ｓ23PT）×１００）は、２５％以上、好ましくは３５％以上であり、そして、７０％以下、好ましくは６０％以下である、前記＜１＞〜＜１２＞の何れか１に記載の吸収性物品。
＜１４＞
前記腹側領域又は前記背側伸縮部の前記吸収体と重なる領域に関し、前記外面側シートの高伸縮部位の横方向の長さ（Ｗ２）に対する、前記本体側シートと前記外面側シートの高伸縮部位との接合部位である第１接合部位の横方向の長さ（Ｗ１）の割合（（Ｗ１／Ｗ２）×１００）は、６０％以上であることが好ましく、８０％以上であり、そして、１５０％以下、好ましくは１２０％以下である、前記＜１＞〜＜１３＞の何れか１に記載の吸収性物品。
＜１５＞
前記腹側領域又は前記背側伸縮部の前記吸収体と重なる領域に関し、前記外面側シートの低伸縮部位の横方向の長さ（Ｗ３）に対する、前記第１接合部位の横方向の長さ（Ｗ１）の割合（（Ｗ１／Ｗ３）×１００）は、５０％以上、好ましくは７０％以上であり、そして、１４０％以下、好ましくは１２０％以下である、前記＜１＞〜＜１４＞の何れか１に記載の吸収性物品。 <12>
With respect to the dorsal region, the ratio of the lateral length of the region overlapping the absorber to the total lateral length of the region not overlapping the absorber ((L 23PT / L 23NT ) × 100) is 20. % Or more, preferably 30% or more, and 65% or less, preferably 55% or less, according to any one of <1> to <11>.
<13>
At least with respect to one of the ventral region and the dorsal stretch unit, the relative area of a region that overlaps the absorber (S 23PT), the proportion of total area of the first joint zones (S 1JT) ((S 1JT / S 23PT ) × 100) is 25% or more, preferably 35% or more, and 70% or less, preferably 60% or less, according to any one of <1> to <12>. Goods.
<14>
With respect to the ventral region or the region of the dorsal telescopic portion that overlaps with the absorber, the main body side sheet and the outer surface side sheet are highly stretchable with respect to the lateral length (W2) of the highly stretchable portion of the outer surface side sheet. The ratio ((W1 / W2) × 100) of the lateral length (W1) of the first joint site, which is the joint site with the site, is preferably 60% or more, 80% or more, and The absorbent article according to any one of <1> to <13>, which is 150% or less, preferably 120% or less.
<15>
With respect to the ventral region or the region of the dorsal stretchable portion that overlaps with the absorber, the lateral length of the first joint portion (W3) with respect to the lateral length (W3) of the low stretchable portion of the outer surface side sheet ( The ratio of W1) ((W1 / W3) × 100) is 50% or more, preferably 70% or more, and 140% or less, preferably 120% or less. The absorbent article according to any one.

＜１６＞
前記腹側領域又は前記背側伸縮部の前記吸収体と重なる領域に関し、前記吸収性本体と前記外装体との固定部位である本体固定用接着剤の横方向の長さ（Ｗ４）に対する、前記外面側シートの高伸縮部位の横方向の長さ（Ｗ２）の割合（（Ｗ２／Ｗ４）×１００）は、６０％以上、好ましくは８０％以上であり、そして、１５０％以下、好ましくは１２０％以下である、前記＜５＞に記載の吸収性物品。
＜１７＞
前記腹側領域及び前記背側伸縮部の少なくとも一方に関し、前記吸収体と重ならない領域の面積（Ｓ23NT）に対する、前記第２接合部位の面積の総和（Ｓ2JT）の割合（（Ｓ2JT／Ｓ23NT）×１００）は、２０％以上、好ましくは３５％以上であり、そして、７５％以下、好ましくは６５％以下である、前記＜１＞〜＜１６＞の何れか１に記載の吸収性物品。
＜１８＞
前記腹側伸縮部又は前記背側伸縮部の前記吸収体と重ならない領域の面積（Ｓ23NT）に対する、前記第２非接合部位の面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ23NT）×１００）は、２５％以上、好ましくは３５％以上であり、そして、８０％以下、好ましくは６５％以下である、前記＜１＞〜＜１７＞の何れか１に記載の吸収性物品。
＜１９＞
前記腹側伸縮部又は前記背側伸縮部の前記吸収体と重ならない領域に関し、前記第２接合部位の面積の総和（Ｓ2JT）に対する、前記第２非接合部位の面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ2JT）×１００）は、１００％以上、好ましくは２００％以上であり、そして、１０００％以下、好ましくは８００％以下である、前記＜１＞〜＜１８＞の何れか１に記載の吸収性物品。
＜２０＞
前記腹側領域又は前記背側伸縮部の前記吸収体と重ならない領域に関し、前記外面側シートの高伸縮部位の横方向の長さ（Ｗ２）に対する、前記第２接合部位の横方向の長さ（Ｗ５）の割合（（Ｗ５／Ｗ２）×１００）は、５０％以上、好ましくは７０％以上であり、そして、１５０％以下、好ましくは１００％以下である、前記＜１＞〜＜１９＞の何れか１に記載の吸収性物品。
＜２１＞
前記腹側領域又は前記背側伸縮部の前記吸収体と重ならない領域に関し、前記外面側シートの低伸縮部位の横方向の長さ（Ｗ３）に対する、前記第２接合部位の横方向の長さ（Ｗ５）の割合（（Ｗ５／Ｗ３）×１００）は、４０％以上、好ましくは７０％以上であり、そして、１４０％以下、好ましくは１００％以下である、前記＜１＞〜＜２０＞の何れか１に記載の吸収性物品。
＜２２＞
前記腹側領域及び前記背側伸縮部の少なくとも一方に関し、前記第２接合部位の横方向の長さ（Ｗ５）に対する、前記第１接合部位の横方向の長さ（Ｗ１）の割合（（Ｗ１／Ｗ５）×１００）は、５０％以上、好ましくは７０％以上であり、そして、２００％以下、好ましくは１５０％以下である、前記＜１＞〜＜２１＞の何れか１に記載の吸収性物品。 <16>
With respect to the ventral region or the region of the dorsal telescopic portion that overlaps with the absorber, the said is to the lateral length (W4) of the main body fixing adhesive which is a fixing portion between the absorbent main body and the outer body. The ratio of the lateral length (W2) of the highly stretchable portion of the outer surface side sheet ((W2 / W4) × 100) is 60% or more, preferably 80% or more, and 150% or less, preferably 120. % Or less, the absorbent article according to <5> above.
<17>
At least with respect to one of the ventral region and the dorsal stretch unit, the relative area of the region which does not overlap with the absorbent body (S 23 nt), the proportion of total area of the second joint zones (S 2JT) ((S 2JT / S 23NT ) × 100) is 20% or more, preferably 35% or more, and 75% or less, preferably 65% or less, according to any one of <1> to <16>. Sex goods.
<18>
The ratio of the area of a region where the does not overlap with the absorbent body of the ventral telescopic portion or the back side elastic portion to (S 23NT), total area of the second non-joint zone (S 2NJT) ((S 2NJT / S 23NT ) × 100) is 25% or more, preferably 35% or more, and 80% or less, preferably 65% or less, according to any one of <1> to <17>. ..
<19>
With respect to the region of the ventral stretchable portion or the dorsal stretchable portion that does not overlap with the absorber, the total area of the second non-joint portion (S 2NJT ) with respect to the total area of the second joint portion (S 2JT ). ((S 2NJT / S 2JT ) × 100) is 100% or more, preferably 200% or more, and 1000% or less, preferably 800% or less. The absorbent article according to any one.
<20>
With respect to the ventral region or the region of the dorsal stretchable portion that does not overlap with the absorber, the lateral length of the second joint portion with respect to the lateral length (W2) of the highly stretchable portion of the outer surface side sheet. The ratio of (W5) ((W5 / W2) × 100) is 50% or more, preferably 70% or more, and 150% or less, preferably 100% or less. The absorbent article according to any one of.
<21>
With respect to the ventral region or the region of the dorsal stretchable portion that does not overlap with the absorber, the lateral length of the second joint portion with respect to the lateral length (W3) of the low stretchable portion of the outer surface side sheet. The ratio of (W5) ((W5 / W3) × 100) is 40% or more, preferably 70% or more, and 140% or less, preferably 100% or less. The absorbent article according to any one of.
<22>
The ratio of the lateral length (W1) of the first joint to the lateral length (W5) of the second joint (W1) with respect to at least one of the ventral region and the dorsal telescopic portion. / W5) × 100) is 50% or more, preferably 70% or more, and 200% or less, preferably 150% or less, according to any one of <1> to <21>. Sex goods.

＜２３＞
前記外面側シートを構成する３枚の腹側外面側シート、背側外面側シート及び股下外面側シートのうち、該腹側外面側シート及び該背側外面側シートが横方向に伸縮性を有し、該股下外面側シートは伸縮性を有しておらず非伸縮性である、前記＜１＞〜＜２２＞の何れか１に記載の吸収性物品。
＜２４＞
前記腹側外面側シート及び前記背側外面側シートは、非弾性繊維を主体とする伸長可能な繊維層の一面に糸状の弾性フィラメントが接合した構成を有し、該繊維層としての２枚の繊維シートと、両シート間に介在配置された該弾性フィラメントとしての弾性部材とを含んで構成されている、前記＜２３＞に記載の吸収性物品。
＜２５＞
複数の前記弾性部材は、互いに交差せずに一方向（横方向）に延びるように配列している、前記＜２４＞に記載の吸収性物品。
＜２６＞
前記弾性部材は、実質的に非伸長状態で２枚の前記繊維シートに接合されている、前記＜２４＞又は＜２５＞に記載の吸収性物品。
＜２７＞
前記繊維シート（非弾性繊維を主体とする伸長可能な繊維層）とこれに接合されている前記弾性部材との間には接着剤が存在しない、前記＜２４＞〜＜２６＞の何れか１に記載の吸収性物品。
＜２８＞
前記高伸縮部位及び前記低伸縮部位それぞれに関し、前記弾性部材の延びる方向の伸長時の長さは、収縮時を１００％としたとき、該高伸縮部位の横方向の長さが該低伸縮部位の横方向の長さよりも長いことを前提として、前記高伸縮部位が、１３０％以上であり、好ましくは３００％以上であり、上限値が６００％以下であり、そして、前記低伸縮部位が、２００％以下、好ましくは１７０％以下であり、下限値が１００％以上である、前記＜２４＞〜＜２７＞の何れか１に記載の吸収性物品。 <23>
Of the three ventral outer surface sheets, the dorsal outer surface side sheet, and the inseam outer surface side sheet constituting the outer surface side sheet, the ventral outer surface side sheet and the dorsal outer surface side sheet have lateral elasticity. However, the absorbent article according to any one of <1> to <22>, wherein the inseam outer surface side sheet does not have elasticity and is non-stretchable.
<24>
The ventral outer surface side sheet and the dorsal outer surface side sheet have a structure in which filamentous elastic filaments are bonded to one surface of an stretchable fiber layer mainly composed of inelastic fibers, and two sheets as the fiber layer. The absorbent article according to <23>, which comprises a fiber sheet and an elastic member as the elastic filament interposed between the sheets.
<25>
The absorbent article according to <24>, wherein the plurality of elastic members are arranged so as to extend in one direction (lateral direction) without intersecting each other.
<26>
The absorbent article according to <24> or <25>, wherein the elastic member is joined to the two fiber sheets in a substantially non-stretched state.
<27>
Any one of <24> to <26>, wherein there is no adhesive between the fiber sheet (extensible fiber layer mainly composed of inelastic fibers) and the elastic member bonded to the fiber sheet. Absorbent article described in.
<28>
Regarding each of the high-stretchable portion and the low-stretchable portion, the length of the elastic member in the extending direction is 100% when contracted, and the lateral length of the high-stretchable portion is the low-stretchable portion. The high elastic part is 130% or more, preferably 300% or more, the upper limit is 600% or less, and the low elastic part is, on the premise that it is longer than the lateral length of the above. The absorbent article according to any one of <24> to <27>, wherein the content is 200% or less, preferably 170% or less, and the lower limit is 100% or more.

１ パンツ型使い捨ておむつ（吸収性物品）
ＷＡ 腹側伸縮部
ＷＢ 背側伸縮部
２ 吸収性本体
２１ 表面シート
２２ 裏面シート
２３ 吸収体
２３ＰＴ 吸収体と重なる領域
２３ＮＴ 吸収体と重ならない領域
２４ 防漏カフ
２５ 防漏カフ形成用弾性部材
３ 外装体
３１ 外面側シート
３１Ａ 腹側外面側シート
３１ＡＥ 腹側延出部
３１Ｂ 背側外面側シート
３１ＢＥ 背側延出部
３１Ｃ 股下外面側シート
３１Ｈ 高伸縮部位
３１Ｌ 低伸縮部位
３２ 本体側シート
３３ ウエスト弾性部材
３４ レッグ弾性部材
４ 本体固定用接着剤
１ＪＴ 第１接合部位
２ＪＴ 第２接合部位
１ＮＪＴ 第１非接合部位
２ＮＪＴ 第２非接合部位
Ａ 腹側領域、Ｂ 背側領域、Ｃ 股下領域 1 Pants-type disposable diaper (absorbent article)
WA Ventral elastic part WB Dorsal elastic part 2 Absorbent body 21 Front surface sheet 22 Back sheet 23 Absorbent 23PT Area that overlaps with absorber 23NT Area that does not overlap with absorber 24 Leak-proof cuff 25 Elastic member for leak-proof cuff formation 3 Exterior Body 31 Outer surface side sheet 31A Ventral side outer surface side sheet 31AE Abdominal extension part 31B Dorsal outer surface side sheet 31BE Dorsal extension part 31C Inseam outer surface side sheet 31H High expansion / contraction part 31L Low expansion / contraction part 32 Body side sheet 33 Waist elastic member 34 Leg elastic member 4 Body fixing adhesive 1JT 1st joint 2JT 2nd joint 1NJT 1st non-join 2NJT 2nd non-join A ventral region, B dorsal region, C inseam region

Claims (7)

縦方向に腹側領域および背側領域と、それらの間に位置する股下領域とを備え、前記腹側領域と前記背側領域とに亘って吸収性材料を含む吸収体を具備する吸収性本体を有し、該腹側領域及び該背側領域それぞれに横方向に延びる腹側伸縮部及び背側伸縮部を有する吸収性物品であって、
前記腹側伸縮部及び前記背側伸縮部は、それぞれ、前記吸収性本体に接合される本体側シートと、該本体側シートの非肌対向面に配される外面側シートとを有し、
前記本体側シート及び前記外面側シートの少なくとも一方は、横方向に伸縮性を有する伸縮シートであり、
前記伸縮シートは、相対的に伸縮性の高い高伸縮部位と相対的に伸縮性の低い低伸縮部位とが横方向に交互に配されており、
前記腹側伸縮部及び前記背側伸縮部の少なくとも一方には、前記伸縮シートが配され、前記吸収体と重なる領域においては前記本体側シートと前記外面側シートとが前記高伸縮部位で接合される第１接合部位を形成し、前記吸収体よりも外方の該吸収体と重ならない領域においては該本体側シートと該外面側シートとが前記低伸縮部位で接合される第２接合部位を形成し且つ前記高伸縮部位で接合されていない第２非接合部位を形成している、吸収性物品。 An absorbent body comprising a ventral region and a dorsal region in the longitudinal direction and an inseam region located between them, and an absorber containing an absorbent material over the ventral region and the dorsal region. An absorbent article having a ventral stretchable portion and a dorsal stretchable portion extending laterally in the ventral region and the dorsal region, respectively.
The ventral stretchable portion and the dorsal stretchable portion each have a main body side sheet joined to the absorbent main body and an outer surface side sheet arranged on a non-skin facing surface of the main body side sheet.
At least one of the main body side sheet and the outer surface side sheet is a stretchable sheet having elasticity in the lateral direction.
In the elastic sheet, high elastic portions having relatively high elasticity and low elastic portions having relatively low elasticity are alternately arranged in the lateral direction.
The stretchable sheet is arranged on at least one of the ventral stretchable portion and the dorsal stretchable portion, and the main body side sheet and the outer surface side sheet are joined at the highly stretchable portion in a region overlapping the absorber. In the region outside the absorber that does not overlap with the absorber, the second joint portion where the main body side sheet and the outer surface side sheet are joined at the low expansion / contraction portion is formed. An absorbent article that forms a second non-bonded site that is formed and not joined at the highly stretchable site. 前記吸収体と重なる領域においては、前記本体側シートと前記外面側シートとが前記低伸縮部位で接合されていない第１非接合部位を形成し、該第１非接合部位と前記第１接合部位とが、縦方向に連続して形成されており、横方向に交互に配されている、請求項１に記載の吸収性物品。 In the region overlapping the absorber, the main body side sheet and the outer surface side sheet form a first non-joining portion that is not joined at the low expansion / contraction portion, and the first non-joining portion and the first joining portion are formed. The absorbent article according to claim 1, wherein the and the members are continuously formed in the vertical direction and alternately arranged in the horizontal direction. 前記吸収体と重なる領域においては、前記第１接合部位は、前記高伸縮部位の全域に形成されている、請求項１又は２に記載の吸収性物品。 The absorbent article according to claim 1 or 2, wherein in the region overlapping the absorber, the first joint portion is formed in the entire area of the highly stretchable portion. 前記本体側シート及び前記外面側シートは、一方が前記伸縮シートであり、他方が非伸縮性のシートである、請求項１〜３の何れか１項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 3, wherein one of the main body side sheet and the outer surface side sheet is the stretchable sheet and the other is a non-stretchable sheet. 前記吸収性物品は、前記吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体を具備し、
前記外装体は、前記本体側シートと前記外面側シートとを有し、
前記吸収性本体及び前記外装体との固定部位の位置と、前記吸収体と重なる領域における前記第１接合部位の位置とが重なっている、請求項１〜４の何れか１項に記載の吸収性物品。 The absorbent article comprises an exterior body that is arranged on the non-skin facing surface side of the absorbent body and fixes the absorbent body.
The exterior body has the main body side sheet and the outer surface side sheet.
The absorption according to any one of claims 1 to 4, wherein the position of the fixing portion between the absorbent body and the exterior body and the position of the first joining portion in the region overlapping the absorber overlap. Sex goods. 前記腹側伸縮部又は前記背側伸縮部の前記吸収体と重ならない領域の面積（Ｓ23NT）に対する、前記第２非接合部位の面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ23NT）×１００）は、２５％以上であり、そして、８０％以下である、請求項１〜５の何れか１項に記載の吸収性物品。 The ratio of the area of a region where the does not overlap with the absorbent body of the ventral telescopic portion or the back side elastic portion to (S 23NT), total area of the second non-joint zone (S 2NJT) ((S 2NJT / S 23NT ) X 100) is the absorbent article according to any one of claims 1 to 5, wherein is 25% or more and 80% or less. 前記腹側伸縮部又は前記背側伸縮部の前記吸収体と重ならない領域に関し、前記第２接合部位の面積の総和（Ｓ2JT）に対する、前記第２非接合部位の面積の総和（Ｓ2NJT）の割合（（Ｓ2NJT／Ｓ2JT）×１００）は、１００％以上であり、そして、１０００％以下である、請求項１〜６の何れか１項に記載の吸収性物品。 With respect to the region of the ventral stretchable portion or the dorsal stretchable portion that does not overlap with the absorber, the total area of the second non-joint portion (S 2NJT ) with respect to the total area of the second joint portion (S 2JT ). The absorbent article according to any one of claims 1 to 6, wherein the ratio ((S 2NJT / S 2JT ) × 100) is 100% or more and 1000% or less.
JP2017178354A 2016-12-28 2017-09-15 Absorbent article Active JP6941518B2 (en)

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