JP5901134B2 - Disposable diapers - Google Patents

Disposable diapers Download PDF

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Publication number
JP5901134B2
JP5901134B2 JP2011080354A JP2011080354A JP5901134B2 JP 5901134 B2 JP5901134 B2 JP 5901134B2 JP 2011080354 A JP2011080354 A JP 2011080354A JP 2011080354 A JP2011080354 A JP 2011080354A JP 5901134 B2 JP5901134 B2 JP 5901134B2
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leg
seat portion
edge region
crotch
leg periphery
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JP2012213487A (en
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瀧野　俊介
俊介 瀧野
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Uni Charm Corp
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Uni Charm Corp
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Priority to JP2011080354A priority Critical patent/JP5901134B2/en
Priority to PCT/JP2012/054001 priority patent/WO2012132627A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

Description

本発明は使い捨てオムツに関する。   The present invention relates to a disposable diaper.

一つの胴回り開口及び一対の脚回り開口を備える使い捨てオムツであって、オムツ展開時に縦方向に互いに離間された前側部分及び後側部分と、これら前側部分及び後側部分に接合された弾性シートとを備え、前側部分及び後側部分の側縁領域同士がそれぞれ、テープファスナによって接合される、使い捨てオムツが公知である（特許文献１参照）。このようにすると、着用者に弾性シートが接触するので、オムツが着用者の動きに容易に追従し、オムツのズレ下がりを抑制することができる。   A disposable diaper having a waist opening and a pair of leg openings, a front part and a rear part which are separated from each other in the longitudinal direction when the diaper is deployed, and an elastic sheet joined to the front part and the rear part A disposable diaper is known in which the side edge regions of the front part and the rear part are joined to each other by a tape fastener (see Patent Document 1). If it does in this way, since an elastic sheet contacts a wearer, a diaper can track a wearer's movement easily and can suppress a gap fall of a diaper.

特開２００１−８９６８号公報JP 2001-8968 A

しかしながら、上述のオムツでは、テープファスナが弾性シートから離間した位置にあるので、前側部分に隣接する弾性シート部分と後側部分に隣接する弾性シート部分とが互いに接合されていない。その結果、着用者の動きによって脚回り開口が大きく拡げられ、弾性シートが着用者から離脱するおそれがある。したがって、オムツのズレ下がりを十分に抑制できないおそれがある。また、前側部分に隣接する弾性シート部分と後側部分に隣接する弾性シート部分とが互いに接合されていないので、当該弾性シート部分が前側部分及び後側部分から分離するおそれもある。   However, in the above-mentioned diaper, since the tape fastener is located away from the elastic sheet, the elastic sheet portion adjacent to the front portion and the elastic sheet portion adjacent to the rear portion are not joined to each other. As a result, the leg opening is greatly expanded by the movement of the wearer, and the elastic sheet may be detached from the wearer. Therefore, there is a possibility that the lowering of the diaper can not be sufficiently suppressed. Further, since the elastic sheet portion adjacent to the front portion and the elastic sheet portion adjacent to the rear portion are not joined to each other, the elastic sheet portion may be separated from the front portion and the rear portion.

本発明によれば、一つの胴回り開口及び一対の脚回り開口を備えるパンツ型の使い捨てオムツであって、前側部分と後側部分と股部分とを備え、前側部分及び後側部分はオムツ展開時に縦方向に互いに離間され、股部分は横断方向中間位置を縦方向に延びて前側部分及び後側部分に接合され、前記オムツは更に、伸長性又は伸縮性を有する脚回りシートを備え、脚回りシートは、股部分の一側において前側部分と後側部分との間の間隙に配置された第１の脚回りシート部分と、股部分の他側において前側部分と後側部分との間の間隙に配置された第２の脚回りシート部分とを含み、第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、前側部分及び後側部分よりも伸度が高い材料から構成され、第１の脚回りシート部分の縦方向両周縁領域及び内方側縁領域は股部分の一側においてそれぞれ、前側部分の下縁領域及び後側部分の下縁領域並びに股部分の側縁領域に、非伸長状態又は低伸長状態でもって接合され、第２の脚回りシート部分の縦方向両周縁領域及び内方側縁領域は股部分の他側においてそれぞれ、前側部分の下縁領域及び後側部分の下縁領域並びに股部分の側縁領域に、非伸長状態又は低伸長状態でもって接合され、第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ伸長可能領域を備え、一対の脚周り開口はそれぞれ、第１の脚回りシート部分の伸長可能領域及び第２の脚回りシート部分の伸長可能領域によって囲まれており、第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、脚回り開口周りにおいてシワを有していない、使い捨てオムツが提供される。   According to the present invention, a pants-type disposable diaper having one waistline opening and a pair of leghole openings, comprising a front part, a rear part, and a crotch part, wherein the front part and the rear part are when the diaper is deployed. The crotch parts are longitudinally spaced apart from each other, the crotch parts extend in the transverse direction in the longitudinal direction and are joined to the front part and the rear part, and the diaper further includes a leg-surrounding sheet having stretchability or stretchability. The seat includes a first leg-surrounding seat portion disposed in a gap between the front portion and the rear portion on one side of the crotch portion, and a gap between the front portion and the rear portion on the other side of the crotch portion. Each of the first leg periphery seat portion and the second leg periphery seat portion is made of a material having higher elongation than the front portion and the rear portion, respectively. Vertical direction of the first leg seat The peripheral region and the inner side edge region are joined to the lower edge region of the front portion, the lower edge region of the rear portion, and the side edge region of the crotch portion in a non-extension state or a low extension state on one side of the crotch portion, respectively. And both the longitudinal peripheral edge region and the inner side edge region of the second leg periphery seat portion are the lower edge region of the front portion, the lower edge region of the rear portion, and the side edge of the crotch portion on the other side of the crotch portion, respectively. The first leg-hole seat portion and the second leg-hole seat portion each include an extensible region, and the pair of leg-hole openings are respectively provided in the first leg. The stretchable area of the swivel seat portion and the stretchable area of the second leg swivel seat portion are surrounded by the first leg swivel seat portion and the second leg swivel seat portion, respectively. Do not have Disposable diapers is provided.

オムツが着用者に密着し続けるのを促進することができる。   The diaper can be kept in close contact with the wearer.

本発明による第１実施例の使い捨てオムツの平面図である。It is a top view of the disposable diaper of 1st Example by this invention. 図１のオムツの展開図である。It is an expanded view of the diaper of FIG. 図２の線ＩＩＩ−ＩＩＩに沿ってみた断面図である。FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. 従来の使い捨てオムツの展開図である。It is an expanded view of the conventional disposable diaper. 切欠きの別の実施例を示す図である。It is a figure which shows another Example of a notch. 切抜きを有する実施例を示す図である。It is a figure which shows the Example which has a cutout. 切欠きの寸法を説明する図である。It is a figure explaining the dimension of a notch. 本発明による第２実施例の使い捨てオムツの平面図である。It is a top view of the disposable diaper of 2nd Example by this invention. 図８のオムツの展開図である。It is an expanded view of the diaper of FIG. 図９の線Ｘ−Ｘに沿ってみた断面図である。It is sectional drawing seen along line XX of FIG. 股部分の一例を示す図２と同様の展開図である。It is an expanded view similar to FIG. 2 which shows an example of a crotch part. 図１１の線ＸＩＩ−ＸＩＩに沿ってみた断面図である。It is sectional drawing seen along line XII-XII of FIG.

図１、図２及び図３は本発明による第１実施例を示している。なお、図２において、Ｌはオムツ１の縦方向を、Ｔは縦方向に直交する横断方向を、それぞれ示している。   1, 2 and 3 show a first embodiment according to the present invention. In FIG. 2, L indicates the longitudinal direction of the diaper 1, and T indicates the transverse direction orthogonal to the longitudinal direction.

図１、図２及び図３を参照すると、パンツ型の使い捨てオムツ１は前側部分４Ｆ、後側部分４Ｂ及び股部分４Ｃを備える。前側部分４Ｆ及び後側部分４Ｂはそれぞれ着用時に着用者の腹側及び背側に位置する。   Referring to FIGS. 1, 2 and 3, the pant-type disposable diaper 1 includes a front portion 4F, a rear portion 4B and a crotch portion 4C. The front part 4F and the rear part 4B are located on the wearer's ventral side and back side, respectively, when worn.

前側部分４Ｆ及び後側部分４Ｂはそれぞれ長方形状をなしており、展開時に縦方向Ｌに互いに離間して配置される。また、前側部分４Ｆ及び後側部分４Ｂにはそれぞれ、横断方向Ｔに互いにほぼ平行に延びる複数の弾性部材５Ｆ，５Ｂが設けられる。特に図３に示されるように、前側部分４Ｆ及び後側部分４Ｂはそれぞれ互いに重ねられた２枚の液不透過性シートを備え、弾性部材５Ｆ，５Ｂはこれらシート間に伸長状態で配置されてこれらシートに固定される。なお、前側部分４Ｆ及び後側部分４Ｂの下縁領域４ＦＢ，４ＢＢには弾性部材５Ｆ，５Ｂが設けられていない。   The front part 4F and the rear part 4B each have a rectangular shape and are spaced apart from each other in the longitudinal direction L when deployed. Each of the front portion 4F and the rear portion 4B is provided with a plurality of elastic members 5F and 5B extending substantially parallel to each other in the transverse direction T. In particular, as shown in FIG. 3, the front portion 4F and the rear portion 4B each include two liquid-impermeable sheets stacked on each other, and the elastic members 5F and 5B are arranged in an extended state between these sheets. It is fixed to these sheets. The elastic members 5F and 5B are not provided in the lower edge regions 4FB and 4BB of the front portion 4F and the rear portion 4B.

股部分４Ｃも長方形状をなし、縦方向Ｌに延びて横断方向中間位置において前側部分４Ｆ及び後側部分４Ｂに接合される。この場合、股部分４Ｃの縦方向周縁領域４ＣＦ，４ＣＢがそれぞれ前側部分４Ｆ及び後側部分４Ｂの下縁領域４ＦＢ，４ＢＢに接合される。その結果、股部分４Ｃは着用時に着用者の股部に位置する。   The crotch portion 4C also has a rectangular shape, extends in the longitudinal direction L, and is joined to the front portion 4F and the rear portion 4B at the intermediate position in the transverse direction. In this case, the longitudinal peripheral regions 4CF and 4CB of the crotch portion 4C are joined to the lower edge regions 4FB and 4BB of the front portion 4F and the rear portion 4B, respectively. As a result, the crotch portion 4C is located on the wearer's crotch when worn.

この股部分４Ｃは、例えば、着用者の肌側に位置する液透過性のトップシートと、液不透過性のバックシートと、これらトップシートとバックシートとの間に保持された吸収体とを備える。吸収体は例えば繊維集合体及び高吸収ポリマー粒子を備える吸収コアを含む。繊維集合体は例えば粉砕パルプ及び熱可塑性合成繊維の一方又は両方から構成される。また、この吸収コアを包むラップシートを設けてもよく、あるいは、ラップシートを省略することもできる。   The crotch portion 4C includes, for example, a liquid-permeable top sheet positioned on the skin side of the wearer, a liquid-impermeable back sheet, and an absorbent body held between the top sheet and the back sheet. Prepare. The absorbent includes an absorbent core comprising, for example, fiber assemblies and superabsorbent polymer particles. The fiber assembly is composed of, for example, one or both of pulverized pulp and thermoplastic synthetic fiber. In addition, a wrap sheet that wraps the absorbent core may be provided, or the wrap sheet may be omitted.

オムツ１は更に、概ね四角形状の一対の脚回りシート部分６Ｌ，６Ｒを備え、すなわち図１及び図２において股部分４Ｃの左側に位置する左方脚回りシート部分６Ｌと、股部分４Ｃの右側に位置する右方脚回りシート部分６Ｒとを備える。脚回りシート部分６Ｌ，６Ｒは伸長性又は伸縮性を有し、好ましくは伸縮性を有する。   The diaper 1 further includes a pair of generally leg-shaped leg seat portions 6L and 6R, that is, a left leg seat portion 6L located on the left side of the crotch portion 4C in FIGS. 1 and 2, and a right side of the crotch portion 4C. And a right leg periphery seat portion 6R. The leg-hole sheet portions 6L and 6R have stretchability or stretchability, and preferably have stretchability.

脚回りシート部分６Ｌ，６Ｒの伸度は前側部分４Ｆ及び後側部分４Ｂを構成するシートの伸度よりも高く、好ましくは１４０％以上であり、さらに好ましくは１８０％以上である。ここで、シート材の伸度は次のようにして求められる。すなわち、自然状態にあるシート材に５０ｍｍの線分を描き、次いでシート材を引っ張って伸長させ、完全に伸長したときの線分の長さＢ（ｍｍ）を測定する。次いで、次式を用いて伸度が算出される。   The elongation of the leg periphery sheet portions 6L and 6R is higher than the elongation of the sheets constituting the front portion 4F and the rear portion 4B, preferably 140% or more, and more preferably 180% or more. Here, the elongation of the sheet material is obtained as follows. That is, a line segment of 50 mm is drawn on a sheet material in a natural state, and then the sheet material is pulled and stretched, and the length B (mm) of the line segment when fully stretched is measured. Next, the elongation is calculated using the following equation.

伸度＝Ｂ／５０ｘ１００（％）       Elongation = B / 50x100 (%)

更に、脚回りシート部分６Ｌ，６Ｒは液不透過性、撥水性、及び通気性のうち少なくとも一つを有する。   Further, the leg periphery sheet portions 6L and 6R have at least one of liquid impermeability, water repellency, and air permeability.

脚回りシート部分は伸長性シート又は伸縮性シートから構成できる。伸長性シートとして、例えば、ポリエチレン、ポリプロピレン等の熱可塑性樹脂フィルムを用いることができる。あるいは、熱可塑性樹脂フィルムに、部分的に切断され又は脆弱化された非伸長性不織布を貼り合わせた複合シートから構成することもできる。一方、伸縮性シートとして、例えば、ウレタン、スチレンのような熱可塑性エラストマ樹脂を溶融した伸縮繊維からなる不織布、伸縮繊維からなる不織布に、部分的に切断され又は脆弱化された非伸長性不織布を貼り合わせた複合シートから構成することもできる。   The leg periphery sheet | seat part can be comprised from an extensible sheet | seat or an elastic sheet. As the extensible sheet, for example, a thermoplastic resin film such as polyethylene or polypropylene can be used. Or it can also comprise from the composite sheet which bonded the non-extensible nonwoven fabric partially cut | disconnected or weakened to the thermoplastic resin film. On the other hand, as a stretchable sheet, for example, a non-stretchable nonwoven fabric partially cut or embrittled into a nonwoven fabric composed of stretchable fibers obtained by melting a thermoplastic elastomer resin such as urethane or styrene, or a nonwoven fabric composed of stretchable fibers. It can also comprise a composite sheet that is bonded together.

前側部分４Ｆ及び後側部分４Ｂはそれぞれ、非伸縮性もしくは伸縮性不織布シート、プラスチックシート等から構成できる。具体的には、例えば、目付が約１０〜４０ｇ／ｍ２の範囲にある、スパンボンド不織布、ポイントボンド不織布、ＳＭＳ（スパンボンド・メルトブローン・スパンバンド）不織布、不透液性のプラスチックフィルム、それらのラミネート等を用いることができる。伸縮性シートとして、例えば、ウレタン、スチレンのような熱可塑性エラストマ樹脂を溶融した伸縮繊維からなる不織布等を用いることができる。 Each of the front side portion 4F and the rear side portion 4B can be made of a non-stretchable or stretchable nonwoven fabric sheet, a plastic sheet, or the like. Specifically, for example, a spunbond nonwoven fabric, a pointbonded nonwoven fabric, an SMS (spunbond / meltblown / spunband) nonwoven fabric, a liquid-impervious plastic film having a basis weight in a range of about 10 to 40 g / m 2 , and the like Laminate or the like can be used. As the stretchable sheet, for example, a nonwoven fabric made of stretchable fibers obtained by melting a thermoplastic elastomer resin such as urethane or styrene can be used.

左方脚回りシート部分６Ｌの縦方向周縁領域６ＬＦ，６ＬＢは股部分４Ｃの左方においてそれぞれ、前側部分４Ｆの下縁領域４ＦＢ及び後側部分４Ｂの下縁領域４ＢＢに接合される。また、左方脚回りシート部分６Ｌの内方側縁領域６ＬＩは、股部分４Ｃの左方側縁領域４ＣＬに接合される。その結果、股部分４Ｃの左方において前側部分４Ｆと後側部分４Ｂとの間の間隙７Ｌに左方脚回りシート部分６Ｌが配置される。   The longitudinal peripheral edge regions 6LF and 6LB of the left leg periphery seat portion 6L are joined to the lower edge region 4FB of the front portion 4F and the lower edge region 4BB of the rear portion 4B, respectively, on the left side of the crotch portion 4C. Further, the inner side edge region 6LI of the left leg periphery seat portion 6L is joined to the left side edge region 4CL of the crotch portion 4C. As a result, the left leg periphery seat portion 6L is disposed in the gap 7L between the front portion 4F and the rear portion 4B on the left side of the crotch portion 4C.

同様に、右方脚回りシート部分６Ｒの縦方向周縁領域６ＲＦ，６ＲＢは股部分４Ｃの右方においてそれぞれ、前側部分４Ｆの下縁領域４ＦＢ及び後側部分４Ｂの下縁領域４ＢＢに接合される。また、右方脚回りシート部分６Ｒの内方側縁領域６ＲＩは、股部分４Ｃの右方側縁領域４ＣＲに接合される。その結果、股部分４Ｃの右方において前側部分４Ｆと後側部分４Ｂとの間の間隙７Ｒに右方脚回りシート部分６Ｒが配置される。   Similarly, the longitudinal peripheral regions 6RF and 6RB of the right leg-around seat portion 6R are joined to the lower edge region 4FB of the front portion 4F and the lower edge region 4BB of the rear portion 4B, respectively, on the right side of the crotch portion 4C. . Further, the inner side edge region 6RI of the right leg periphery seat portion 6R is joined to the right side edge region 4CR of the crotch portion 4C. As a result, the right leg periphery seat portion 6R is disposed in the gap 7R between the front portion 4F and the rear portion 4B on the right side of the crotch portion 4C.

ここで、前側部分４Ｆ，後側部分４Ｂ，股部分４Ｃ，左方脚回りシート部分６Ｌ及び右方脚回りシート部分６Ｒは例えばホットメルト接着剤Ａ（図３）でもって、互いに接合される。   Here, the front side portion 4F, the rear side portion 4B, the crotch portion 4C, the left leg periphery seat portion 6L, and the right leg periphery seat portion 6R are joined to each other by, for example, hot melt adhesive A (FIG. 3).

この場合、脚回りシート部分６Ｌ，６Ｒはそれぞれ、前側部分４Ｆ，後側部分４Ｂ及び股部分４Ｃに、非伸長状態又は低伸長状態でもって接合される。すなわち、脚回りシート部分６Ｌ，６Ｒはそれぞれ、１．０から１．５倍に伸長された状態で、前側部分４Ｆ，後側部分４Ｂ及び股部分４Ｃに接合される。この場合の伸長方向は縦方向でもよいし、横断方向でもよい。   In this case, the leg-hole seat portions 6L and 6R are joined to the front portion 4F, the rear portion 4B, and the crotch portion 4C, respectively, in a non-extended state or a low-extended state. That is, the leg-hole seat portions 6L and 6R are joined to the front side portion 4F, the rear side portion 4B, and the crotch portion 4C in a state in which the leg-around seat portions 6L and 6R are extended by 1.0 to 1.5 times, respectively. In this case, the extending direction may be the longitudinal direction or the transverse direction.

特に図２に示されるように、オムツ１は展開時に、その両側縁１ＬＥ，１ＲＥからそれぞれ内方に向かう凹部１ＤＬ，１ＤＲを有する。本発明による第１実施例では、左方脚回りシート部分６Ｌは外方側縁６ＬＯＥから内方に向かう切欠き６ＬＣを有し、右方脚回りシート部分６Ｒは外方側縁６ＲＯＥから内方に向かう切欠き６ＲＣを有しており、上述の凹部１ＤＬ，１ＤＲはこれら切欠き６ＬＣ，６ＲＣによって画定される。なお、本発明による第１実施例では、切欠き６ＬＣ，６ＲＣはそれぞれ、横断方向Ｔに延びる長軸を有する半楕円状をなしている。   In particular, as shown in FIG. 2, the diaper 1 has recesses 1DL and 1DR that are directed inward from both side edges 1LE and 1RE, respectively, when deployed. In the first embodiment according to the present invention, the left leg periphery seat portion 6L has a notch 6LC inward from the outer side edge 6LOE, and the right leg periphery seat portion 6R is inward from the outer side edge 6ROE. The recesses 1DL and 1DR described above are defined by these notches 6LC and 6RC. In the first embodiment according to the present invention, the notches 6LC and 6RC each have a semi-elliptical shape having a long axis extending in the transverse direction T.

その上で、凹部１ＤＬないし切欠き６ＬＣの前側開始端６ＬＣＦに隣接する左方脚回りシート部分６Ｌの外方側縁領域６ＬＯＦと、凹部１ＤＲないし切欠き６ＬＣの後側開始端６ＬＣＢに隣接する左方脚回りシート部分６Ｌの外方側縁領域６ＬＯＢとが互いに接合される。また、前側部分４Ｆの左方側縁領域４ＦＬと後側部分４Ｂの左方側縁領域４ＢＬとが互いに接合される。   In addition, the outer side edge region 6LOF of the left leg periphery seat portion 6L adjacent to the front start end 6LCF of the recess 1DL or the notch 6LC and the left adjacent to the rear start end 6LCB of the recess 1DR or notch 6LC. The outer side edge region 6LOB of the leg portion seat portion 6L is joined to each other. Further, the left side edge region 4FL of the front side portion 4F and the left side edge region 4BL of the rear side portion 4B are joined to each other.

同様に、切欠き６ＲＣの前側開始端６ＲＣＦに隣接する右方脚回りシート部分６Ｒの外方側縁領域６ＲＯＦと、切欠き６ＲＣの後側開始端６ＲＣＢに隣接する右方脚回りシート部分６Ｒの外方側縁領域６ＲＯＢとが互いに接合される。また、前側部分４Ｆの右方側縁領域４ＦＲと後側部分４Ｂの右方側縁領域４ＢＲとが互いに接合される。   Similarly, the outer side edge region 6ROF of the right leg periphery seat portion 6R adjacent to the front start end 6RCF of the notch 6RC and the right leg periphery seat portion 6R adjacent to the rear start end 6RCB of the notch 6RC. The outer side edge region 6ROB is joined to each other. Further, the right side edge region 4FR of the front side portion 4F and the right side edge region 4BR of the rear side portion 4B are joined to each other.

その結果、図１に示されるように、左方脚回りシート部分６Ｌによって左方脚回り開口１ＬＬが画定され、右方脚回りシート部分６Ｒによって右方脚回り開口１ＬＲが画定される。また、前側部分４Ｆ及び後側部分４Ｂによって一つの胴回り開口１Ｗが画定される。   As a result, as shown in FIG. 1, the left leg periphery opening 1LL is defined by the left leg periphery seat portion 6L, and the right leg periphery opening 1LR is defined by the right leg periphery seat portion 6R. Further, one waistline opening 1W is defined by the front portion 4F and the rear portion 4B.

ここで、左方脚回りシート部分６Ｌの外方側縁領域６ＬＯＦ，６ＬＯＢ、右方脚回りシート部分６Ｒの外方側縁領域６ＲＯＦ，６ＲＯＢ、前側部分４Ｆ及び後側部分４Ｂの左方側縁領域４ＦＬ，４ＢＬ及び右方側縁領域４ＦＲ，４ＢＲはそれぞれ、例えばソニックシールによってそれぞれ接合され、したがって再接合不能にそれぞれ接合される。その結果、オムツ１はパンツ形状をなしている。   Here, the outer side edge regions 6LOF and 6LOB of the left leg periphery seat portion 6L, the outer side edge regions 6ROF and 6ROB of the right leg periphery seat portion 6R, the left side edge of the front portion 4F and the rear portion 4B The regions 4FL and 4BL and the right side edge regions 4FR and 4BR are respectively joined by, for example, a sonic seal, and are thus joined in a non-rejoinable manner. As a result, the diaper 1 has a pants shape.

脚周りシート部分６Ｌ，６Ｒのうち前側部分４Ｆ，後側部分４Ｂ及び股部分４Ｃに接合されていない領域は、比較的自由に伸長することができる。このような領域を伸長可能領域６ＬＥＸ，６ＲＥＸと称すると、脚周りシート部分６Ｌ，６Ｒは伸長可能領域６ＬＥＸ，６ＲＥＸをそれぞれ備えている。   Of the leg-surrounding seat portions 6L and 6R, regions not joined to the front portion 4F, the rear portion 4B, and the crotch portion 4C can be extended relatively freely. When such regions are referred to as expandable regions 6LEX and 6REX, the leg-surrounding sheet portions 6L and 6R include the expandable regions 6LEX and 6REX, respectively.

左方脚回りシート部分６Ｌの切欠き６ＬＣの縁は、左方脚回りシート部分６Ｌと前側部分４Ｆ、後側部分４Ｂ及び股部分４Ｃとの間の接合領域から離れている。したがって、左方脚回り開口１ＬＬは左方脚回りシート部分６Ｌの伸長可能領域６ＬＥＸによって囲まれている。   The edge of the notch 6LC of the left leg periphery seat portion 6L is separated from the joining region between the left leg periphery seat portion 6L and the front portion 4F, the rear portion 4B, and the crotch portion 4C. Accordingly, the left leg opening 1LL is surrounded by the extensible area 6LEX of the left leg seat portion 6L.

同様に、右方脚回りシート部分６Ｒの切欠き６ＲＣの縁は、右方脚回りシート部分６Ｒと前側部分４Ｆ、後側部分４Ｂ及び股部分４Ｃとの間の接合領域から離れている。したがって、右方脚回り開口１ＬＲは右方脚回りシート部分６Ｒの伸長可能領域６ＲＥＸによって囲まれている。   Similarly, the edge of the notch 6RC of the right leg periphery seat portion 6R is separated from the joining region between the right leg periphery seat portion 6R and the front portion 4F, the rear portion 4B, and the crotch portion 4C. Accordingly, the right leg-hole opening 1LR is surrounded by the extensible region 6REX of the right leg-hole seat portion 6R.

また、脚回り開口１ＬＬ，１ＬＲ周りの脚回りシート部分６Ｌ，６Ｒにはシワが形成されていない。すなわち、脚回り開口１ＬＬ，１ＬＲ周りの脚回りシート部分６Ｌ，６Ｒのシワの高さが０．５ｍｍ以下である。   Further, wrinkles are not formed in the leg-hole seat portions 6L and 6R around the leg-hole openings 1LL and 1LR. That is, the wrinkle height of the leg-hole seat portions 6L and 6R around the leg-hole openings 1LL and 1LR is 0.5 mm or less.

シワの高さは、尾崎製作所社製、ダイヤルシックネスゲージを用いて測定される。この場合、直径１０ｍｍの測定端子が用いられ、測定されるべき脚回りシート部分６Ｌ，６Ｒに２．８ｇｆ／ｃｍ２の荷重が印加される。脚回り開口１ＬＬ，１ＬＲ周りの脚回りシート部分６Ｌ，６Ｒのシワの高さが１０ｍｍごとに測定される。これら測定値の平均値が脚回りシート部分６Ｌ，６Ｒのシワの高さとして算出される。 The height of the wrinkles is measured using a dial thickness gauge manufactured by Ozaki Seisakusho. In this case, a measurement terminal having a diameter of 10 mm is used, and a load of 2.8 gf / cm 2 is applied to the leg periphery sheet portions 6L and 6R to be measured. The height of the wrinkles of the leg-hole seat portions 6L and 6R around the leg-hole openings 1LL and 1LR is measured every 10 mm. The average value of these measured values is calculated as the height of the wrinkles of the leg seat portions 6L and 6R.

本発明による第１実施例では、脚回り開口１ＬＬ，１ＬＲの周長又は内径が着用者の脚の周長又は外径よりも小さくなるように、切欠き６ＬＣ，６ＲＣないし凹部１ＤＬ，１ＤＲが形成されている。   In the first embodiment according to the present invention, the notches 6LC and 6RC or the recesses 1DL and 1DR are formed so that the circumference or inner diameter of the leg opening 1LL or 1LR is smaller than the circumference or outer diameter of the wearer's leg. Has been.

着用時には、脚回り開口１ＬＬ，１ＬＲに着用者の脚がそれぞれ通され、オムツ１が引き上げられる。この場合、脚回りシート部分６Ｌ，６Ｒの伸長可能領域６ＬＥＸ，６ＲＥＸは着用者の脚の形状に応じて伸長する。したがって、脚回りシート部分６Ｌ，６Ｒが着用者に密着する。   At the time of wearing, the wearer's legs are passed through the leg openings 1LL and 1LR, and the diaper 1 is pulled up. In this case, the extensible areas 6LEX and 6REX of the leg-hole seat portions 6L and 6R extend according to the shape of the wearer's leg. Accordingly, the leg seat portions 6L and 6R are in close contact with the wearer.

しかも、左方脚回りシート部分６Ｌ及び右方脚回りシート部分６Ｒがリング状をなしているので、脚回りシート部分６Ｌ，６Ｒが着用者の脚の全周にわたって密着し続けることができる。その結果、一対の脚回り開口１ＬＬ，１ＬＲからのモレを確実に抑制することができる。また、脚回りシート部分６Ｌ，６Ｒが前側部分４Ｆ及び後側部分４Ｂから分離するのを抑制することもできる。   In addition, since the left leg periphery seat portion 6L and the right leg periphery seat portion 6R form a ring shape, the leg periphery seat portions 6L and 6R can be kept in close contact over the entire circumference of the wearer's leg. As a result, the leakage from the pair of leg openings 1LL and 1LR can be reliably suppressed. Moreover, it can also suppress that the leg periphery sheet | seat parts 6L and 6R isolate | separate from the front side part 4F and the rear side part 4B.

一方、上述したように、脚回りシート部分６Ｌ，６Ｒの伸度は前側部分４Ｆ及び後側部分４Ｂを構成するシートの伸度よりも高い。言い換えると、前側部分４Ｆ及び後側部分４Ｂは脚回りシート部分６Ｌ，６Ｒよりも伸長しにくい。したがって、脚回りシート部分６Ｌ，６Ｒが過度に伸張するのが抑制される。   On the other hand, as described above, the elongation of the leg-hole seat portions 6L and 6R is higher than the elongation of the sheets constituting the front portion 4F and the rear portion 4B. In other words, the front side portion 4F and the rear side portion 4B are less likely to extend than the leg-hole seat portions 6L and 6R. Accordingly, excessive extension of the leg seat portions 6L and 6R is suppressed.

ここで、左方脚回りシート部分６Ｌの外方側縁領域６ＬＯＦ，６ＬＯＢの縦方向長さＬＬＯ（図１）、及び右方脚回りシート部分６Ｒの外方側縁領域６ＲＯＦ，６ＲＯＢの縦方向長さＬＲＯ（図１）はそれぞれ、５ｍｍ以上であるのが好ましい。   Here, the longitudinal length LLO (FIG. 1) of the outer side edge regions 6LOF and 6LOB of the left leg periphery seat portion 6L and the longitudinal direction of the outer side edge regions 6ROF and 6ROB of the right leg periphery seat portion 6R. Each of the lengths LRO (FIG. 1) is preferably 5 mm or more.

脚回りシート部分６Ｌ，６Ｒは少なくとも２方向、例えば互いに直交する２方向に伸長性又は伸縮性を有するのが好ましく、例えば縦方向Ｌ及び横断方向Ｔに伸長性又は伸縮性を有するのが好ましい。変更可能には、脚回りシート部分６Ｌ，６Ｒは一方向にのみ伸長性又は伸縮性を有してもよく、切欠き６ＬＣ，６ＲＣが横断方向に延びる半楕円状の場合には、脚回りシート部分６Ｌ，６Ｒは横断方向Ｔに伸長性又は伸縮性を有するのが好ましい。   The leg periphery sheet portions 6L and 6R preferably have extensibility or stretchability in at least two directions, for example, two directions orthogonal to each other, and preferably have stretchability or stretchability in the longitudinal direction L and the transverse direction T, for example. The leg seats 6L and 6R may be extendable or stretchable in only one direction. If the notches 6LC and 6RC have a semi-elliptical shape extending in the transverse direction, the leg seats may be changed. The portions 6L and 6R preferably have stretchability or stretchability in the transverse direction T.

更に、上述したように、脚回りシート部分６Ｌ，６Ｒにシワが設けられていない。また、脚回りシート部分６Ｌ，６Ｒは、前側部分４Ｆ，後側部分４Ｂ及び股部分４Ｃに非伸長状態又は低伸長状態でもって接合される。その結果、脚回りシート部分６Ｌ，６Ｒが線接触ではなく面接触の形で着用者に接するので、着用者に対する脚回りシート部分６Ｌ，６Ｒの密着性が高められる。   Further, as described above, no wrinkles are provided in the leg-hole seat portions 6L and 6R. Further, the leg periphery seat portions 6L and 6R are joined to the front side portion 4F, the rear side portion 4B, and the crotch portion 4C in a non-extended state or a low-extended state. As a result, the leg-hole sheet portions 6L and 6R come into contact with the wearer in the form of surface contact rather than line contact, so that the adhesion of the leg-hole sheet portions 6L and 6R to the wearer is improved.

このように、脚周り開口１ＬＬ，１ＬＲからのモレが抑制されている。その結果、脚周りシート部分６Ｌ，６Ｒが液透過性を有している場合には、着用者の身体とオムツ１との間に形成される空間が尿を一時的に貯留する貯留空間として機能する。したがって、１回の排尿で多量の尿が排泄されたとしても、モレを確実に抑制することができる。なお、貯留空間内の尿は徐々に吸収体に吸収される。   Thus, the leakage from the leg-hole openings 1LL and 1LR is suppressed. As a result, when the leg-surrounding seat portions 6L and 6R are liquid permeable, the space formed between the wearer's body and the diaper 1 functions as a storage space for temporarily storing urine. To do. Therefore, even if a large amount of urine is excreted by one urination, the leakage can be reliably suppressed. The urine in the storage space is gradually absorbed by the absorber.

しかも、本発明による第１実施例では、例えば吸収体４ＣＡの両側縁に沿いつつ立ち上がる防漏部材が設けられていない。その結果、貯留空間の容積が大きくなる。したがって、モレを更に確実に抑制することができる。   Moreover, in the first embodiment according to the present invention, for example, there is no leakage preventing member that rises along both side edges of the absorber 4CA. As a result, the volume of the storage space increases. Therefore, the leakage can be further reliably suppressed.

本発明による第１実施例では、更に、脚回りシート部分６Ｌ，６Ｒの接合領域が縦方向及び横断方向にほぼ沿って形成される。具体的には、左方脚回りシート部分６Ｌの縦方向周縁領域６ＬＦ，６ＬＢがそれぞれ、前側部分４Ｆの下縁領域４ＦＢ及び後側部分４Ｂの下縁領域４ＢＢに、横断方向Ｔにほぼ沿って接合され、左方脚回りシート部分６Ｌの内方側縁領域６ＬＩが、股部分４Ｃの左方側縁領域４ＣＬに、縦方向Ｌにほぼ沿って接合される。同様に、右方脚回りシート部分６Ｒの縦方向周縁領域６ＲＦ，６ＲＢがそれぞれ、前側部分４Ｆの下縁領域４ＦＢ及び後側部分４Ｂの下縁領域４ＢＢに、横断方向Ｔにほぼ沿って接合され、右方脚回りシート部分６Ｒの内方側縁領域６ＲＩが、股部分４Ｃの右方側縁領域４ＣＲに、縦方向Ｌにほぼ沿って接合される。このようにすると、展開状態におけるオムツ１の縦方向長さ及び横断方向長さを大幅に短くすることができ、したがってオムツ１の製造に必要な資材の量を大幅に低減することができる。このことを、図４を参照して説明する。   Further, in the first embodiment according to the present invention, the joining region of the leg periphery sheet portions 6L and 6R is formed substantially along the longitudinal direction and the transverse direction. Specifically, the vertical peripheral edge regions 6LF and 6LB of the left leg periphery seat portion 6L are substantially along the transverse direction T to the lower edge region 4FB of the front portion 4F and the lower edge region 4BB of the rear portion 4B, respectively. The inner side edge region 6LI of the left leg periphery seat portion 6L is joined to the left side edge region 4CL of the crotch portion 4C substantially along the longitudinal direction L. Similarly, the vertical peripheral edge regions 6RF and 6RB of the right leg periphery seat portion 6R are joined to the lower edge region 4FB of the front portion 4F and the lower edge region 4BB of the rear portion 4B substantially along the transverse direction T, respectively. The inward side edge region 6RI of the right leg periphery seat portion 6R is joined to the right side edge region 4CR of the crotch portion 4C substantially along the longitudinal direction L. If it does in this way, the longitudinal direction length and transverse direction length of the diaper 1 in an unfolded state can be reduced significantly, and therefore the amount of materials necessary for manufacturing the diaper 1 can be greatly reduced. This will be described with reference to FIG.

図４に示される従来の使い捨てオムツ１０は、外装体１１、内装体１２、外装体１１に形成されて脚回り開口を形成するための切欠き１３、脚回り開口に沿って外装体１１に配置された弾性部材１４を具備する。このオムツ１０では、脚回り開口周りの外装体１１が弾性部材１４によって収縮され、着用者の脚に押し付けられる。オムツの製造時、弾性部材１４は、サインカーブ状に振動されながら、搬送方向ＭＤに搬送される外装体ウエブ上に供給される。このため、弾性部材１４は弾性部材１４ａ及び弾性部材１４ｂから構成される。   A conventional disposable diaper 10 shown in FIG. 4 is arranged in the exterior body 11, the interior body 12, a notch 13 formed in the exterior body 11 to form a leg opening, and the leg body opening along the leg opening. The elastic member 14 is provided. In this diaper 10, the outer package 11 around the leg opening is contracted by the elastic member 14 and pressed against the wearer's leg. At the time of manufacturing the diaper, the elastic member 14 is supplied onto the outer package web that is conveyed in the conveyance direction MD while being vibrated in a sine curve. For this reason, the elastic member 14 is comprised from the elastic member 14a and the elastic member 14b.

ところが、このように弾性部材１４が供給される場合、弾性部材１４の軌跡の曲率を急激に変動させることは困難であり、したがって弾性部材１４は比較的緩やかなカーブに沿って、比較的大きな振幅でもって供給されることになる。このため、弾性部材１４を受け取る外装体１１は大きくならざるを得ない。   However, when the elastic member 14 is supplied in this way, it is difficult to change the curvature of the locus of the elastic member 14 abruptly. Therefore, the elastic member 14 has a relatively large amplitude along a relatively gentle curve. It will be supplied with it. For this reason, the exterior body 11 which receives the elastic member 14 must be large.

これに対して、本発明による第１実施例では、このような弾性部材を必要としない。しかも、脚回りシート部分６Ｌ，６Ｒの接合領域が縦方向及び横断方向にほぼ沿って形成される。その結果、オムツ１の寸法を大幅に小さくすることができる。   On the other hand, in the first embodiment according to the present invention, such an elastic member is not required. And the joining area | region of the leg periphery sheet | seat parts 6L and 6R is formed along the vertical direction and a cross direction substantially. As a result, the dimension of the diaper 1 can be significantly reduced.

なお、左方脚回りシート部分６Ｌの外方側縁領域６ＬＯＦ，６ＬＯＢ同士の接合部、又は右方脚回りシート部分６Ｒの外方側縁領域６ＲＯＦ，６ＲＯＢ同士の接合部を破壊することにより、脚回り開口１ＬＬ，１ＬＲの大きさを調節することもできる。この場合、上述の接合部の接合強度は、６Ｎ／２５ｍｍから４０Ｎ／２５ｍｍが好ましく、８Ｎ／２５ｍｍから３０Ｎ／２５ｍｍが更に好ましい。接合部の破壊による脚回り開口１ＬＬ，１ＬＲの大きさの調節を可能にしつつ、オムツ１の使用時における接合部の意図しない破壊を阻止できるからである。   By destroying the joint between the outer side edge regions 6LOF and 6LOB of the left leg periphery seat portion 6L or the joint between the outer side edge regions 6ROF and 6ROB of the right leg periphery seat portion 6R, The size of the leg opening 1LL, 1LR can also be adjusted. In this case, the bonding strength of the above-described bonding portion is preferably 6 N / 25 mm to 40 N / 25 mm, and more preferably 8 N / 25 mm to 30 N / 25 mm. This is because the size of the leg openings 1LL and 1LR can be adjusted by breaking the joint, and unintentional breakage of the joint when using the diaper 1 can be prevented.

図５（Ａ）及び図５（Ｂ）は、切欠き６ＬＣ，６ＲＣの別の実施例を示している。切欠き６ＬＣ，６ＲＣはそれぞれ、図５（Ａ）に示される例では縦方向に延びる長軸を有する半楕円状をなしている。また、図５（Ｂ）に示される例では切欠き６ＬＣ，６ＲＣはそれぞれ、スリットから構成される。   5A and 5B show another embodiment of the notches 6LC and 6RC. Each of the notches 6LC and 6RC has a semi-elliptical shape having a long axis extending in the vertical direction in the example shown in FIG. In the example shown in FIG. 5B, the notches 6LC and 6RC are each formed of a slit.

図６（Ａ）及び図６（Ｂ）に示されるように、切欠き６ＬＣ，６ＲＣに換えて、切抜き６ＬＣＣ，６ＲＣＣを脚回りシート部分６Ｌ，６Ｒに形成することもできる。図６（Ａ）に示される例では、切抜き６ＬＣＣ，６ＲＣＣはそれぞれ、横断方向に延びる長軸を有する半楕円状をなしている。図６（Ｂ）に示される例では切抜き６ＬＣＣ，６ＲＣＣはそれぞれ、スリットから構成される。切抜き６ＬＣＣ，６ＲＣＣを縦方向に細長くすることもできる。   As shown in FIG. 6 (A) and FIG. 6 (B), the cutouts 6LCC and 6RCC may be formed in the leg periphery sheet portions 6L and 6R instead of the cutouts 6LC and 6RC. In the example shown in FIG. 6A, each of the cutouts 6LCC and 6RCC has a semi-elliptical shape having a long axis extending in the transverse direction. In the example shown in FIG. 6B, each of the cutouts 6LCC and 6RCC is formed of a slit. The cutouts 6LCC and 6RCC can be elongated in the vertical direction.

図５（Ａ）に示される例では、脚回りシート部分６Ｌ，６Ｒは少なくとも縦方向に伸長性又は伸縮性を有するのが好ましい。これに対し、図５（Ｂ），図６（Ａ），図６（Ｂ）に示される例では、少なくとも横断方向に伸長性又は伸縮性を有するのが好ましい。   In the example shown in FIG. 5A, it is preferable that the leg periphery sheet portions 6L and 6R have stretchability or stretchability at least in the longitudinal direction. On the other hand, in the example shown in FIGS. 5B, 6A, and 6B, it is preferable that the film has stretchability or stretchability at least in the transverse direction.

切欠き６ＬＣ，６ＲＣ又は切抜き６ＬＣＣ，６ＲＣＣが図２、図５（Ｂ）、図６（Ａ），図６（Ｂ）に示されるように横断方向に細長い場合には、脚回り開口１ＬＬ，１ＬＲは着用者の大腿部に位置することができる。この場合、着用者の動きのある部位が締め付けられるのを抑制しつつ、オムツ１により着用者の体を広範囲で覆うことができる。   When the cutouts 6LC and 6RC or the cutouts 6LCC and 6RCC are elongated in the transverse direction as shown in FIGS. 2, 5B, 6A, and 6B, the leg openings 1LL and 1LR are opened. Can be located on the wearer's thigh. In this case, it is possible to cover the wearer's body over a wide range with the diaper 1 while suppressing the movement of the wearer.

一方、切欠き６ＬＣ，６ＲＣが図５（Ａ）に示されるように縦方向に細長い場合には、脚回り開口１ＬＬ，１ＬＲは着用者の鼠径部に位置することができる。この場合、着用者の外観を簡素化することができる。   On the other hand, when the notches 6LC and 6RC are elongated in the vertical direction as shown in FIG. 5A, the leg opening 1LL and 1LR can be positioned at the groin portion of the wearer. In this case, the wearer's appearance can be simplified.

いずれにしても、脚回り開口１ＬＬ，１ＬＲが着用者の脚よりも小さく形成されているので、着用時に脚回りシート部分６Ｌ，６Ｒが着用者の脚に確実に密着することができる。   In any case, since the leg hole openings 1LL and 1LR are formed smaller than the wearer's leg, the leg sheet portions 6L and 6R can be in close contact with the wearer's leg when worn.

次に、切欠き６ＬＣ，６ＲＣ又は切抜き６ＬＣＣ，６ＲＣＣの寸法について、図７を参照して説明する。本発明による第１実施例では、切欠き６ＬＣ，６ＲＣの縦方向長さＬＮＤがオムツ１の縦方向長さＬＮ１の３分の１以下であり（ＬＮＤ≦（１／３）ＬＮ１）、かつ切欠き６ＬＣ，６ＲＣの横断方向長さＷＤＤがオムツ１の横断方向長さＷＤ１の３分の１以下である（ＷＤＤ≦（１／３）ＷＤ１）ように、切欠き６ＬＣ，６ＲＣが形成される。   Next, the dimensions of the cutouts 6LC and 6RC or the cutouts 6LCC and 6RCC will be described with reference to FIG. In the first embodiment according to the present invention, the longitudinal length LND of the notches 6LC and 6RC is not more than one third of the longitudinal length LN1 of the diaper 1 (LND ≦ (1/3) LN1), and The notches 6LC and 6RC are formed such that the transverse length WDD of the notches 6LC and 6RC is equal to or less than one third of the transverse length WD1 of the diaper 1 (WDD ≦ (1/3) WD1).

このようにすると、オムツ１によって着用者の体を十分に覆いながら、脚回り開口１ＬＬ，１ＬＲの大きさを小さくすることができる。したがって、脚回りシート部分６Ｌ，６Ｒを着用者の脚に確実に密着させることができる。   If it does in this way, the size of leg opening 1LL and 1LR can be made small, fully covering a wearer's body with diaper 1. Therefore, the leg periphery sheet | seat parts 6L and 6R can be firmly stuck to a wearer's leg.

このことは実験によっても確認されている。すなわち、子供用オムツ及び大人用オムツのように縦方向長さＬＮ１及び横断方向長さＷＤ１が互いに異なる複数のオムツについて、ＬＮＤ≦（１／３）ＬＮ１かつＷＤＤ≦（１／３）ＷＤ１であるオムツと、ＬＮＤ＞（１／３）ＬＮ１又はＷＤＤ＞（１／３）ＷＤ１であるオムツとを用意した。これらオムツについてモレの発生頻度を確認したところ、ＬＮＤ≦（１／３）ＬＮ１かつＷＤＤ≦（１／３）ＷＤ１であるオムツでは低いモレ発生頻度が得られた。これに対し、ＬＮＤ＞（１／３）ＬＮ１又はＷＤＤ＞（１／３）ＷＤ１であるオムツでは高いモレ発生頻度が得られた。   This has been confirmed by experiments. That is, LND ≦ (1/3) LN1 and WDD ≦ (1/3) WD1 for a plurality of diapers having different longitudinal lengths LN1 and transverse lengths WD1 such as children's diapers and adult diapers. Diapers and diapers with LND> (1/3) LN1 or WDD> (1/3) WD1 were prepared. When the occurrence frequency of leakage was confirmed for these diapers, a low occurrence frequency of leakage was obtained for diapers in which LND ≦ (1/3) LN1 and WDD ≦ (1/3) WD1. On the other hand, a high frequency of occurrence of leakage was obtained in diapers where LND> (1/3) LN1 or WDD> (1/3) WD1.

切抜き６ＬＣＣ，６ＲＣＣについても同様に寸法設定することができる。   The dimensions can be similarly set for the cutouts 6LCC and 6RCC.

図８、図９及び図１０は本発明による第２実施例を示している。図８、図９及び図１０を参照すると、第２実施例では単一の脚回りシート６が設けられる。この脚回りシート６は、前側部分４Ｆ及び後側部分４Ｂとほぼ同じ横断方向長さを有する。   8, 9 and 10 show a second embodiment according to the present invention. Referring to FIGS. 8, 9 and 10, in the second embodiment, a single leg-hole seat 6 is provided. The leg periphery seat 6 has substantially the same transverse length as the front portion 4F and the rear portion 4B.

脚回りシート６は、股部分４Ｃの一側において前側部分４Ｆと後側部分４Ｂとの間の間隙７Ｌに配置された左方脚回りシート部分６Ｌと、股部分４Ｃの他側において前側部分４Ｆと後側部分４Ｂとの間の間隙７Ｒに配置された右方脚回りシート部分６Ｒとを含む。これら脚回りシート部分６Ｌ，６Ｒはそれぞれ、第１実施例と同様に、前側部分４Ｆ，後側部分４Ｂ及び股部分４Ｃに接合される。   The leg periphery seat 6 includes a left leg periphery seat portion 6L disposed in a gap 7L between the front portion 4F and the rear portion 4B on one side of the crotch portion 4C, and a front portion 4F on the other side of the crotch portion 4C. And a right leg leg seat portion 6R disposed in a gap 7R between the rear portion 4B and the rear portion 4B. These leg-around seat portions 6L and 6R are joined to the front portion 4F, the rear portion 4B, and the crotch portion 4C, respectively, as in the first embodiment.

すなわち、本発明による第２実施例では、脚回りシート部分６Ｌ，６Ｒが単一の部材から構成される。これに対し、上述の第１実施例では、脚回りシート部分６Ｌ，６Ｒは互いに別の部材から構成される。   In other words, in the second embodiment according to the present invention, the leg periphery seat portions 6L and 6R are formed of a single member. On the other hand, in the above-described first embodiment, the leg-hole seat portions 6L and 6R are composed of different members.

特に図９に示されるように、脚回りシート部分６Ｌ，６Ｒはそれぞれ、切抜き６ＬＣＣ，６ＲＣＣを有する。本発明による第２実施例では、切抜き６ＬＣＣ，６ＲＣＣはそれぞれ、横断方向に延びる長軸を有する半楕円状をなしている。なお、脚回りシート部分６Ｌ，６Ｒに、縦方向に細長い切抜き６ＬＣＣ，６ＲＣＣを形成してもよいし、切欠き６ＬＣ，６ＲＣを形成してもよい。   In particular, as shown in FIG. 9, the leg-hole seat portions 6L and 6R have cutouts 6LCC and 6RCC, respectively. In the second embodiment according to the present invention, each of the cutouts 6LCC and 6RCC has a semi-elliptical shape having a long axis extending in the transverse direction. It should be noted that cutouts 6LCC and 6RCC that are elongated in the vertical direction may be formed in the leg periphery sheet portions 6L and 6R, or notches 6LC and 6RC may be formed.

本発明による第２実施例のその他の構成及び作用は第１実施例の構成及び作用と同様である。   Other configurations and operations of the second embodiment according to the present invention are the same as those of the first embodiment.

図１１及び図１２は股部分４Ｃの一例を本発明による第１実施例に適用した場合を示している。なお、本例を本発明による第２実施例に適用することもできる。   11 and 12 show a case where one example of the crotch portion 4C is applied to the first embodiment according to the present invention. This example can also be applied to the second embodiment according to the present invention.

図１１及び図１２に示される例では、股部分４Ｃは、トップシート４ＣＴＳと、バックシート４ＣＢＳと、吸収体４ＣＡとを備える。吸収体４ＣＡは互いに接合されたトップシート４ＣＴＳ及び被覆シート４ＣＣによって覆われ、被覆シート４ＣＣはバックシート４ＣＢＳに接合される。この場合、バックシート４ＣＢＳの幅は吸収体４ＣＡの幅よりも大きく、したがってバックシート４ＣＢＳは吸収体４ＣＡから横断方向Ｔ両側に延出している。脚周りシート部分６Ｌ，６Ｒはこれらの延出部分においてバックシート４ＣＢＳに接合される。なお、図１１及び図１２において、Ａはホットメルト接着剤を示している。なお、図１１及び図１２において、Ａはホットメルト接着剤を示している。   In the example shown in FIGS. 11 and 12, the crotch portion 4C includes a top sheet 4CTS, a back sheet 4CBS, and an absorber 4CA. The absorber 4CA is covered with a top sheet 4CTS and a cover sheet 4CC that are bonded to each other, and the cover sheet 4CC is bonded to the back sheet 4CBS. In this case, the width of the back sheet 4CBS is larger than the width of the absorber 4CA, and therefore the back sheet 4CBS extends from the absorber 4CA to both sides in the transverse direction T. The leg-surrounding sheet portions 6L and 6R are joined to the back sheet 4CBS at these extended portions. In FIGS. 11 and 12, A indicates a hot melt adhesive. In FIGS. 11 and 12, A indicates a hot melt adhesive.

これまで述べてきた実施例では、股部分４Ｃは前側部分４Ｆ及び後側部分４Ｂの弾性部材５Ｆ，５Ｂと重なっていない。しかしながら、股部分４Ｃが弾性部材５Ｆ，５Ｂの少なくとも一部と重なるように、股部分４Ｃを縦方向Ｌに延長し又は弾性部材５Ｆ，５Ｂを配置してもよい。この場合、股部分４Ｃは弾性部材５Ｆ，５Ｂの一方のみと重なっていてもよいし、両方と重なっていてもよい。   In the embodiment described so far, the crotch portion 4C does not overlap the elastic members 5F and 5B of the front portion 4F and the rear portion 4B. However, the crotch portion 4C may be extended in the longitudinal direction L or the elastic members 5F and 5B may be arranged so that the crotch portion 4C overlaps at least a part of the elastic members 5F and 5B. In this case, the crotch portion 4C may overlap only one of the elastic members 5F and 5B, or may overlap both.

また、これまで述べてきた実施例では、脚周りシート部分６Ｌ，６Ｒに切欠き６ＬＣ，６ＲＣ又は切抜き６ＬＣＣ，６ＲＣＣが形成されている。しかしながら、脚周りシート部分６Ｌ，６Ｒに切欠き又は切抜きを設けなくてもよい。すなわち、オムツ１は展開時に、その両側縁１ＬＥ，１ＲＥからそれぞれ内方に向かう凹部１ＤＬ，１ＤＲを有さなくてもよい。この場合、左方脚周りシート６Ｌの外方側縁領域のうち前側部分４Ｆ及び後側部分４Ｂにそれぞれ隣接する部分同士が互いに接合され、この外方側縁領域の縦方向中央部分は接合されず、したがって左方脚周りシート６Ｌの伸長可能領域６ＬＥＸにより囲まれた脚周り開口１Ｌが画定される。同様に、右方脚周りシート６Ｒの外方側縁領域のうち前側部分４Ｆ及び後側部分４Ｂにそれぞれ隣接する部分同士が互いに接合され、この外方側縁領域の縦方向中央部分は接合されず、したがって右方脚周りシート６Ｒの伸長可能領域６ＲＥＸにより囲まれた脚周り開口１Ｒが画定される。   Moreover, in the Example described so far, notch 6LC, 6RC or notch 6LCC, 6RCC is formed in the leg periphery sheet | seat parts 6L, 6R. However, it is not necessary to provide notches or cutouts in the leg-surrounding sheet portions 6L and 6R. In other words, the diaper 1 does not have to have the recesses 1DL and 1DR inward from the side edges 1LE and 1RE, respectively, when deployed. In this case, the portions adjacent to the front side portion 4F and the rear side portion 4B in the outer side edge region of the left leg-around seat 6L are joined to each other, and the longitudinal center portion of the outer side edge region is joined. Accordingly, the leg opening 1L surrounded by the extensible area 6LEX of the left leg periphery seat 6L is defined. Similarly, the portions adjacent to the front side portion 4F and the rear side portion 4B in the outer side edge region of the right leg periphery seat 6R are joined to each other, and the longitudinal central portion of the outer side edge region is joined. Accordingly, the leg opening 1R surrounded by the extensible region 6REX of the right leg periphery seat 6R is defined.

１ 使い捨てオムツ
１ＬＬ，１ＬＲ 脚回り開口
４Ｆ 前側部分
４Ｂ 後側部分
４Ｃ 股部分
６Ｌ，６Ｒ 脚回りシート部分
６ＬＣ，６ＲＣ 切欠き 1 Disposable Diaper 1LL, 1LR Leg opening 4F Front part 4B Rear part 4C Crotch part 6L, 6R Leg seat part 6LC, 6RC Notch

Claims (9)

一つの胴回り開口及び一対の脚回り開口を備えるパンツ型の使い捨てオムツであって、
それぞれ長方形状の、前側部分と後側部分と股部分とを備え、
前側部分及び後側部分はオムツ展開時に縦方向に互いに離間され、
股部分は横断方向中間位置を縦方向に延びて前側部分及び後側部分に接合されており、
前記オムツは更に、前記前側部分、前記後側部分及び前記股部分に接合された、伸長性又は伸縮性を有する四角形状の脚回りシートを備え、
脚回りシートは、股部分の一側において前側部分と後側部分との間の間隙に配置された第１の脚回りシート部分と、股部分の他側において前側部分と後側部分との間の間隙に配置された第２の脚回りシート部分とを含み、
第１の脚回りシート部分の外方側縁領域どうしが互いに接合され、かつ第２の脚回りシート部分の外方側縁領域どうしが互いに接合されており、
第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、リング状の脚回り開口を形成するための切欠き又は切抜きを備え、
前記切欠き又は切抜きないし該切欠きによって画定される凹部は、前記脚回り開口の周長又は内径が着用者の脚の周長又は外径よりも小さく、
第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、前側部分及び後側部分よりも伸度が高い材料から構成され、
第１の脚回りシート部分の縦方向両周縁領域及び内方側縁領域は股部分の一側においてそれぞれ、非伸長状態又は低伸長状態にあり、かつ前側部分の下縁領域及び後側部分の下縁領域並びに股部分の側縁領域に接合されており、
第２の脚回りシート部分の縦方向両周縁領域及び内方側縁領域は股部分の他側においてそれぞれ、非伸長状態又は低伸長状態にあり、かつ前側部分の下縁領域及び後側部分の下縁領域並びに股部分の側縁領域に接合されており、
第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、脚回り開口周りにおいてシワを有しておらず、
第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ伸長可能領域を備え、一対の脚周り開口はそれぞれ、第１の脚回りシート部分の伸長可能領域及び第２の脚回りシート部分の伸長可能領域によって囲まれており、
第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、脚回り開口に沿った弾性部材を有していない、
使い捨てオムツ。 A pants-type disposable diaper having a waist opening and a pair of leg openings,
Each has a rectangular, front part, rear part and crotch part,
The front part and the rear part are separated from each other in the longitudinal direction when the diaper is deployed,
Crotch portion is joined to the front portion and rear portion extend transversely middle position in the vertical direction,
The diaper further comprises a quadrangular leg-surrounding sheet having extensibility or elasticity, joined to the front part, the rear part and the crotch part,
The leg periphery seat includes a first leg periphery seat portion disposed in a gap between the front portion and the rear portion on one side of the crotch portion, and between the front portion and the rear portion on the other side of the crotch portion. A second leg-surrounding seat portion disposed in the gap of
Outer side edge region to each other in the first leg sheet portions are joined together, and has an outer edge region to each other in the second leg seat part are joined together,
Each of the first leg periphery seat portion and the second leg periphery seat portion includes a notch or a cutout for forming a ring-shaped leg periphery opening,
The notch or notch or the recess defined by the notch is such that the circumference or inner diameter of the leg opening is smaller than the circumference or outer diameter of the wearer's leg,
Each of the first leg periphery seat portion and the second leg periphery seat portion is made of a material having higher elongation than the front portion and the rear portion, respectively.
The longitudinal peripheral edge region and the inward side edge region of the first leg-surrounding seat portion are in a non-extended state or a low-extended state on one side of the crotch portion, respectively , and the lower edge region and the rear side portion of the front side portion It is engaged against the side edge region of the lower edge region and the crotch portion,
Both the longitudinal peripheral edge region and the inner side edge region of the second leg-hole seat portion are in the non-extended state or the low-extended state on the other side of the crotch portion , and the lower edge region and the rear side portion of the front side portion, respectively. It is engaged against the side edge region of the lower edge region and the crotch portion,
Each of the first leg periphery seat portion and the second leg periphery seat portion does not have wrinkles around the leg opening,
The first leg-hole seat portion and the second leg-hole seat portion each include an extendable region, and the pair of leg-hole openings respectively include the extensible region of the first leg-hole seat portion and the second leg-hole seat portion. Surrounded by an extensible area of
Each of the first leg periphery seat portion and the second leg periphery seat portion does not have an elastic member along the leg periphery opening.
Disposable diapers. 第１の脚回りシート部分の縦方向周縁領域がそれぞれ前側部分の下縁領域及び後側部分の下縁領域に、横断方向にほぼ沿って接合され、第１の脚回りシート部分の内方側縁領域が股部分の側縁領域に、縦方向にほぼ沿って接合され、第２の脚回りシート部分の縦方向周縁領域がそれぞれ前側部分の下縁領域及び後側部分の下縁領域に、横断方向にほぼ沿って接合され、第２の脚回りシート部分の内方側縁領域が股部分の側縁領域に、縦方向にほぼ沿って接合される、請求項１に記載の使い捨てオムツ。   A longitudinal peripheral region of the first leg-surrounding seat portion is joined to the lower edge region of the front portion and the lower edge region of the rear portion substantially along the transverse direction, respectively, and the inner side of the first leg-surrounding seat portion The edge region is joined to the side edge region of the crotch portion substantially along the vertical direction, and the vertical peripheral edge region of the second legline seat portion is respectively the lower edge region of the front portion and the lower edge region of the rear portion, The disposable diaper according to claim 1, wherein the disposable diapers are joined substantially along the transverse direction, and the inner side edge region of the second leg-surrounding seat portion is joined to the side edge region of the crotch portion substantially along the longitudinal direction. 第１の脚回りシート部分の切欠き又は切抜きの縁は、第１の脚回りシート部分と前側部分、後側部分及び股部分との間の接合領域から離れており、
第２の脚回りシート部分の切欠き又は切抜きの縁は、第２の脚回りシート部分と前側部分、後側部分及び股部分との間の接合領域から離れている、
請求項１又は２に記載の使い捨てオムツ。 The notch or cut-out edge of the first leg periphery seat portion is away from the joining region between the first leg periphery seat portion and the front portion, the rear portion, and the crotch portion;
The notch or cut-out edge of the second leg-hole seat portion is away from the junction area between the second leg-hole seat portion and the front portion, the rear portion and the crotch portion;
The disposable diaper according to claim 1 or 2. 前記切欠き又は切抜きが横断方向に細長い、請求項３に記載の使い捨てオムツ。   The disposable diaper according to claim 3, wherein the cutout or cutout is elongated in a transverse direction. 前記切欠き又は切抜きの横断方向長さがオムツの横断方向長さの３分の１以下である、請求項３又は４に記載の使い捨てオムツ。   The disposable diaper of Claim 3 or 4 whose transverse direction length of the said notch or notch is 1/3 or less of the transverse direction length of a diaper. 前記第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、少なくとも２方向に伸長性を有する、請求項１から５までのいずれか一項に記載の使い捨てオムツ。   The disposable diaper according to any one of claims 1 to 5, wherein each of the first leg periphery seat portion and the second leg periphery seat portion is extensible in at least two directions. 前記第１の脚回りシート部分及び第２の脚回りシート部分はそれぞれ、少なくとも２方向に伸縮性を有する、請求項１から６までのいずれか一項に記載の使い捨てオムツ。   The disposable diaper according to any one of claims 1 to 6, wherein each of the first leg periphery seat portion and the second leg periphery seat portion has elasticity in at least two directions. 前記第１の脚回りシート部分及び第２の脚回りシート部分が互いに別の部材から構成される、請求項１から７までのいずれか一項に記載の使い捨てオムツ。   The disposable diaper according to any one of claims 1 to 7, wherein the first leg-hole seat portion and the second leg-hole seat portion are formed of different members. 前記第１の脚回りシート部分及び第２の脚回りシート部分が単一の部材から構成される、請求項１から７までのいずれか一項に記載の使い捨てオムツ。   The disposable diaper according to any one of claims 1 to 7, wherein the first leg periphery seat portion and the second leg periphery seat portion are configured by a single member.
JP2011080354A 2011-03-31 2011-03-31 Disposable diapers Active JP5901134B2 (en)

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JP3550053B2 (en) * 1999-06-30 2004-08-04 ユニ・チャーム株式会社 Disposable diapers
JP4392173B2 (en) * 2002-01-30 2009-12-24 ユニ・チャーム株式会社 Pants-type disposable wearing articles
US7569039B2 (en) * 2003-11-19 2009-08-04 The Procter & Gamble Company Disposable pull-on garment
JP5208965B2 (en) * 2007-12-25 2013-06-12 株式会社光洋 Trunks type diapers
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