JP5415844B2

JP5415844B2 - Disposable diapers

Info

Publication number: JP5415844B2
Application number: JP2009155361A
Authority: JP
Inventors: 健次中岡
Original assignee: Livedo Corp
Current assignee: Livedo Corp
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2014-02-12
Anticipated expiration: 2029-06-30
Also published as: JP2011010721A

Description

本発明は、着用者からの排泄物を受ける使い捨ておむつに関する。 The present invention relates to a disposable diaper that receives excrement from a wearer.

従来より、着用者からの排泄物を受ける使い捨ておむつの１つとして、着用者の前側を覆う前方被覆部と後側を覆う後方被覆部とを腰周りで止着して装着するオープンタイプの使い捨ておむつが使用されている。例えば、特許文献１では、１対の１次ファスナーにてフロントウエスト領域（前方被覆部）とバックウエスト領域（後方被覆部）とを係合することにより、着用者のヒップ周りで着用される吸収性物品において、ウエスト領域を着用者の身体に一致させる２次ファスナーを設ける手法が提案されている。また、特許文献２では、後身頃（後方被覆部）の両側縁部のそれぞれに２つのファスニングテープを設け、一方を上端部近傍にておむつの幅方向に平行に配置し、他方を股下部の側縁に沿って配置することにより、使い捨ておむつにおいて、脚周りからの漏れ防止効果を向上する手法が開示されている。 Conventionally, as a disposable diaper that receives excrement from a wearer, an open-type disposable in which a front covering part covering the front side of the wearer and a rear covering part covering the rear side are fastened and worn around the waist. Diapers are used. For example, in patent document 1, the absorption worn around a wearer's hips by engaging a front waist area (front covering part) and a back waist area (rear covering part) with a pair of primary fasteners. In a property article, a method has been proposed in which a secondary fastener is provided to match the waist region with the wearer's body. Further, in Patent Document 2, two fastening tapes are provided on both side edges of the back body (rear covering part), one is arranged in the width direction of the diaper in the vicinity of the upper end part, and the other is placed on the crotch part. A technique for improving the effect of preventing leakage from around a leg in a disposable diaper by disposing it along the side edge is disclosed.

特表２００１−５１３３６４号公報JP-T-2001-513364 特開２００２−９５６９３号公報JP 2002-95793 A

ところで、特許文献２の使い捨ておむつでは、後方被覆部の各側部において、２つのファスニングテープにより引っ張られる位置が同じシート上にて互いに近接していることにより、使い捨ておむつを着用した状態にて２つのファスニングテープの間の部位に皺が発生し、着用者において違和感が生じてしまう。また、各ファスニングテープによる締め付け程度の調整の自由度も低くなってしまう。後方被覆部の側部に切れ目を設けて（後述の図４の線９３参照）、２つのファスニングテープが取り付けられる部位を互いに分離することにより、皺の発生を防止するとともに、各ファスニングテープによる締め付け調整の自由度を向上して、着用者の腰周りおよび脚周りを適切に締め付けることも考えられるが、切れ目の先端にて孔が開いた状態となるため、排泄物が漏出する可能性がある。 By the way, in the disposable diaper of patent document 2, it is 2 in the state which worn the disposable diaper in each side part of a back coating | coated part, since the position pulled with two fastening tapes mutually adjoins on the same sheet | seat. A wrinkle occurs in a portion between two fastening tapes, and the wearer feels uncomfortable. Moreover, the freedom degree of adjustment of the fastening degree by each fastening tape will also become low. By providing a cut in the side part of the rear covering part (see line 93 in FIG. 4 to be described later), the two fastening tapes are separated from each other, thereby preventing wrinkles and tightening with each fastening tape. It is possible to improve the degree of freedom of adjustment and tighten the wearer's waist and legs appropriately, but there is a possibility that excrement may leak because the hole is opened at the tip of the cut .

本発明は上記課題に鑑みなされたものであり、着用者の腰周りおよび脚周りを適切に締め付けつつ、排泄物の漏出を防止することを目的としている。 This invention is made | formed in view of the said subject, and it aims at preventing the leakage of excretion, tightening | wearing a wearer's waist circumference and leg circumference appropriately.

請求項１に記載の発明は、着用者からの排泄物を受ける使い捨ておむつであって、着用者の前側を覆う前方被覆部、前記着用者の後側を覆う後方被覆部、並びに、前記前方被覆部および前記後方被覆部の間において前記着用者の股間部に対向する股下被覆部を有する略シート状の本体部と、前記前方被覆部および前記後方被覆部のうち一方の被覆部の両側部に接合され、他方の被覆部の外面上に少なくとも一部が止着されることにより、前記着用者の腰周りの前記本体部による締め付けが行われる１対の第１止着シート部と、前記一方の被覆部の前記両側部に接合され、前記他方の被覆部の前記外面上に少なくとも一部が止着されることにより、前記着用者の脚周りの前記本体部による締め付けが行われる１対の第２止着シート部とを備え、前記両側部の近傍にて前記１対の第１止着シート部と前記１対の第２止着シート部とが重なる。 The invention according to claim 1 is a disposable diaper that receives excrement from the wearer, the front covering portion covering the front side of the wearer, the rear covering portion covering the rear side of the wearer, and the front covering. A substantially sheet-shaped main body portion having a crotch covering portion facing the crotch portion of the wearer between the front portion and the rear covering portion, and on both sides of one covering portion of the front covering portion and the rear covering portion A pair of first fastening sheet portions that are joined and tightened by the body portion around the waist of the wearer by being fastened at least partially on the outer surface of the other covering portion; Fastening is performed by the body portion around the wearer's leg by being bonded to the both side portions of one covering portion and being fastened at least partially on the outer surface of the other covering portion. A pair of second fastening sheet portions, In the vicinity of the serial side portions and the first fastening seat portion of the pair and the second fastening seat of the pair overlaps.

請求項２に記載の発明は、請求項１に記載の使い捨ておむつであって、前記１対の第２止着シート部が、前記１対の第１止着シート部の外面に接する。 Invention of Claim 2 is a disposable diaper of Claim 1, Comprising: The said 1st pair of 2nd fastening sheet | seat part contact | connects the outer surface of said 1st pair of 1st fastening sheet | seat part.

請求項３に記載の発明は、請求項２に記載の使い捨ておむつであって、前記１対の第２止着シート部が、前記他方の被覆部の前記外面および前記１対の第１止着シート部の前記外面の双方に止着可能である。 The invention according to claim 3 is the disposable diaper according to claim 2, wherein the pair of second fastening sheet portions are the outer surface of the other covering portion and the pair of first fastening members. It can be fixed to both the outer surfaces of the seat portion.

請求項４に記載の発明は、請求項１ないし３のいずれかに記載の使い捨ておむつであって、前記１対の第１止着シート部が、前記両側部の縁に沿って広がる第１根元部と、前記第１根元部から側方に突出する第１突出部とを備え、前記１対の第２止着シート部が、前記両側部の縁に沿って広がり、前記第１根元部と重なる第２根元部と、前記第２根元部から側方に突出するとともに下方にずれて前記第１突出部と重なる第２突出部とを備える。 The invention of claim 4 is a disposable diaper according to any one of claims 1 to 3, before Symbol first fastening seat portion of a pair of first extending along the edges of the side portions A first projecting portion projecting laterally from the first base portion, the pair of second fastening sheet portions extending along edges of the both side portions, and the first root portion And a second protruding portion that protrudes laterally from the second root portion and is shifted downward and overlaps the first protruding portion.

請求項５に記載の発明は、請求項４に記載の使い捨ておむつであって、前記第１根元部および前記第２根元部が、前記一方の被覆部の前記両側部のほぼ上下全体に亘って広がる。 Invention of Claim 5 is a disposable diaper of Claim 4, Comprising: The said 1st root part and the said 2nd root part are covering the up-and-down whole of the said both sides of said one coating | coated part. spread.

請求項６に記載の発明は、請求項４または５に記載の使い捨ておむつであって、前記本体部が、前記前方被覆部および前記後方被覆部の上端部の縁に沿って接合されるとともに収縮することにより腰周りギャザーを形成する腰周り弾性部材と、前記股下被覆部の両側部の縁に沿って接合されるとともに収縮することにより脚周りギャザーを形成する脚周り弾性部材とを備え、前記本体部および前記１対の第２止着シート部が広げられた状態において、前記第２突出部が、前記脚周り弾性部材の延長線上に位置し、前記腰周り弾性部材の延長線上に位置しない。 Invention of Claim 6 is a disposable diaper of Claim 4 or 5, Comprising: The said main-body part is joined and contracted along the edge of the upper end part of the said front coating | coated part and the said back coating | coated part. A waist elastic member that forms a waist gather by forming the waist elastic member, and a leg elastic member that is joined and contracted along the edges of both sides of the crotch covering portion to form a leg gather. In a state where the main body portion and the pair of second fastening sheet portions are spread, the second projecting portion is located on the extension line of the leg elastic member and not on the extension line of the waist elastic member. .

本発明によれば、着用者の腰周りおよび脚周りを適切に締め付けつつ、第１止着シート部と第２止着シート部との間からの排泄物の漏出を防止することができる。 ADVANTAGE OF THE INVENTION According to this invention, the leakage of excrement from between a 1st fastening sheet | seat part and a 2nd fastening sheet | seat part can be prevented, tightening a wearer's waist circumference and leg circumference | surroundings appropriately.

また、請求項２の発明では、第１止着シート部の止着により本体部を着用者に装着した後に、第２止着シート部を止着して、着用者の脚周りの締め付けを容易に行うことができ、請求項４の発明では、第１止着シート部および第２止着シート部を本体部に強固に接合しつつ被覆部の両側部近傍からの排泄物の漏出をさらに防止することができ、請求項６の発明では、腰周りの締め付けに大きく影響を与えることなく、着用者の脚周りを堅固に締め付けることができる。 In addition, in the invention of claim 2, after the main body part is attached to the wearer by fastening the first fastening sheet part, the second fastening sheet part is fastened to easily tighten around the leg of the wearer. In the invention of claim 4, the first fastening sheet portion and the second fastening sheet portion are firmly joined to the main body portion, and further leakage of excrement from the vicinity of both sides of the covering portion is further prevented. In the invention of claim 6, the circumference of the wearer's leg can be firmly tightened without greatly affecting the tightening around the waist.

使い捨ておむつの外観を示す図である。It is a figure which shows the external appearance of a disposable diaper. 広げられた使い捨ておむつの平面図である。It is a top view of the unfolded disposable diaper. 使い捨ておむつの断面図である。It is sectional drawing of a disposable diaper. 比較例の使い捨ておむつを示す図である。It is a figure which shows the disposable diaper of a comparative example. 使い捨ておむつの他の例を示す図である。It is a figure which shows the other example of a disposable diaper. 使い捨ておむつのさらに他の例を示す図である。It is a figure which shows the further another example of a disposable diaper. 使い捨ておむつのさらに他の例を示す図である。It is a figure which shows the further another example of a disposable diaper. 使い捨ておむつのさらに他の例を示す図である。It is a figure which shows the further another example of a disposable diaper.

図１は、本発明の一の実施の形態に係る使い捨ておむつ１の外観を示す図である。着用者からの排泄物を受ける吸収性物品である使い捨ておむつ１は、着用者の前側に接する部位と後側に接する部位とを腰周りで止着して装着される。 FIG. 1 is a diagram showing an appearance of a disposable diaper 1 according to an embodiment of the present invention. A disposable diaper 1 that is an absorbent article that receives excrement from a wearer is worn by attaching a portion that contacts the front side of the wearer and a portion that contacts the rear side around the waist.

図２は、オープンタイプの使い捨ておむつ１の広げた状態を示す平面図であり、図２では、使い捨ておむつ１の着用時に着用者側を向く面を示している。また、図３は、図２中の矢印Ａ−Ａの位置における使い捨ておむつ１の断面図であり、図２の縦方向（後述の長手方向）に垂直な面で切断した断面を示している。 FIG. 2 is a plan view showing the open-type disposable diaper 1 in an unfolded state. FIG. 2 shows a surface facing the wearer when the disposable diaper 1 is worn. 3 is a cross-sectional view of the disposable diaper 1 at the position of the arrow AA in FIG. 2, and shows a cross section cut along a plane perpendicular to the vertical direction (longitudinal direction described later) in FIG.

図２に示すように、使い捨ておむつ１は略シート状の本体部２を備え、本体部２は、着用者の前側を覆う部位２０１（以下、「前方被覆部２０１」という。）、および、着用者の後側を覆う部位（以下、「後方被覆部２０３」という。）を有する。前方被覆部２０１と後方被覆部２０３との間には、前方被覆部２０１および後方被覆部２０３に連続するとともに着用者の股間部に対向する部位２０２（以下、「股下被覆部２０２」という。）が設けられる。股下被覆部２０２の幅（すなわち、図２中の横方向の幅）は、前方被覆部２０１および後方被覆部２０３の幅よりも小さくなっており、使い捨ておむつ１では、股下被覆部２０２の両側部に切欠き部が設けられていると捉えることができる。以下の説明では、前方被覆部２０１、股下被覆部２０２および後方被覆部２０３が並ぶ図２中の縦方向を長手方向と呼び、長手方向に垂直な図２中の横方向を幅方向と呼ぶ。 As shown in FIG. 2, the disposable diaper 1 includes a substantially sheet-like main body 2, and the main body 2 covers a front part 201 of the wearer (hereinafter referred to as “front covering part 201”) and is worn. A portion covering the rear side of the person (hereinafter referred to as “rear covering portion 203”). Between the front covering part 201 and the rear covering part 203, a part 202 (hereinafter referred to as “inseam covering part 202”) that is continuous with the front covering part 201 and the rear covering part 203 and faces the crotch part of the wearer. Is provided. The width of the crotch covering portion 202 (that is, the width in the lateral direction in FIG. 2) is smaller than the widths of the front covering portion 201 and the rear covering portion 203. In the disposable diaper 1, both side portions of the crotch covering portion 202 are provided. It can be understood that a notch is provided in the. In the following description, the longitudinal direction in FIG. 2 in which the front covering portion 201, the crotch covering portion 202, and the rear covering portion 203 are arranged is referred to as a longitudinal direction, and the lateral direction in FIG. 2 perpendicular to the longitudinal direction is referred to as a width direction.

図２および図３に示すように、本体部２は、略シート状の吸収体である吸収コア２２、吸収コア２２の着用者側の主面を覆うトップシート２１、吸収コア２２のもう一方の主面（すなわち、２つの主面のうち着用者から遠い面）を覆うバックシート２３、および、長手方向におけるトップシート２１のほぼ全長に亘ってトップシート２１の幅方向の両側に配置される１対のサイドシート２４を備える。図２では、トップシート２１およびサイドシート２４を部分的に削除して吸収コア２２の一部分を示しており、当該部分に平行斜線を付している。 As shown in FIG. 2 and FIG. 3, the main body 2 includes an absorbent core 22 that is a substantially sheet-shaped absorbent body, a top sheet 21 that covers the main surface of the absorbent core 22 on the wearer side, and the other core of the absorbent core 22. The back sheet 23 that covers the main surface (that is, the surface of the two main surfaces that is far from the wearer), and 1 that is disposed on both sides in the width direction of the top sheet 21 over substantially the entire length of the top sheet 21 in the longitudinal direction. A pair of side seats 24 is provided. In FIG. 2, the top sheet 21 and the side sheet 24 are partially deleted to show a part of the absorbent core 22, and the portions are indicated by parallel diagonal lines.

図３に示すように、吸収コア２２は、バックシート２３の着用者側の面に塗布されたホットメルト接着剤を介してバックシート２３に接着されており、トップシート２１は、吸収コア２２の周りにおいてホットメルト接着剤を介してバックシート２３に接着されている。また、サイドシート２４は、バックシート２３のトップシート２１から露出する部位、および、トップシート２１の両側部（幅方向の両端部）にホットメルト接着剤を介して接着される。これらのホットメルト接着剤としては、ポリオレフィン系、ゴム系、酢酸ビニル系等のものが利用される。図３では、図の理解を容易にするために、実際には接合している構成間を僅かに離間させている。 As shown in FIG. 3, the absorbent core 22 is bonded to the backsheet 23 via a hot melt adhesive applied to the wearer-side surface of the backsheet 23, and the topsheet 21 is formed of the absorbent core 22. It is adhered to the back sheet 23 via a hot melt adhesive around. Further, the side sheet 24 is bonded to a portion exposed from the top sheet 21 of the back sheet 23 and to both side portions (both end portions in the width direction) of the top sheet 21 via a hot melt adhesive. As these hot melt adhesives, polyolefin-based, rubber-based, vinyl acetate-based and the like are used. In FIG. 3, in order to facilitate understanding of the drawing, the components that are actually joined are slightly separated from each other.

図２に示す本体部２の長手方向の両端部では、各サイドシート２４の幅方向の内側の部位（すなわち、１対のサイドシート２４の互いに近接する部位）がホットメルト接着剤を介してトップシート２１の着用者側の面に接合される。なお、サイドシート２４とトップシート２１との接合は、ヒートシールや超音波接合等により行われてもよい。 At both ends in the longitudinal direction of the main body 2 shown in FIG. 2, the inner portions in the width direction of the side sheets 24 (that is, the portions adjacent to each other of the pair of side sheets 24) are topped via the hot melt adhesive. The sheet 21 is joined to the surface on the wearer side. The side sheet 24 and the top sheet 21 may be joined by heat sealing, ultrasonic joining, or the like.

各サイドシート２４の幅方向の内側の部分では、長手方向の両端部の間の部位２４１が、トップシート２１（および他の構成）とは非接合とされており、当該部位２４１（以下、「非接合部２４１」という。）の幅方向の内縁部には、長手方向に伸びる弾性部材２５１が接合される。弾性部材２５１は、使い捨ておむつ１が広げられた状態では伸張状態となっており、弾性部材２５１が収縮することにより、図３に示すように、サイドシート２４の非接合部２４１が着用者側に向かって立ち上がり、着用者の脚の付け根近傍に当接する側壁部（いわゆる、立体ギャザー）となる。 In the inner portion of each side sheet 24 in the width direction, a portion 241 between both ends in the longitudinal direction is not joined to the top sheet 21 (and other configurations), and the portion 241 (hereinafter, “ An elastic member 251 extending in the longitudinal direction is joined to the inner edge portion in the width direction of the non-joined portion 241 ”). The elastic member 251 is in an expanded state when the disposable diaper 1 is unfolded, and when the elastic member 251 contracts, as shown in FIG. 3, the non-joined portion 241 of the side seat 24 moves toward the wearer. It becomes a side wall part (so-called three-dimensional gather) that stands up and contacts the base of the wearer's leg.

また、図２に示すように、股下被覆部２０２の両側部（外縁近傍の部位）のそれぞれには、側縁に沿って伸びる２本の弾性部材２５２（着用者に着用された状態にて、着用者の脚周りに配置されるため、以下、「脚周り弾性部材２５２」という。）が、サイドシート２４とバックシート２３とに挟まれて接合される。図１ないし図３では、股下被覆部２０２の各側部において１本の脚周り弾性部材のみに符号２５２を付している（後述の腰周り弾性部材２５３において同様）。脚周り弾性部材２５２は、使い捨ておむつ１が広げられた状態では伸張状態となっており、脚周り弾性部材２５２が収縮することにより、サイドシート２４およびバックシート２３が着用者側かつ内側に向かって立ち上がって脚周りギャザー（レッグギャザーとも呼ばれる。）が形成され、使い捨ておむつ１の着用時に着用者の足の付け根近傍に密着する。実際には、脚周り弾性部材２５２は、本体部２の側縁に沿って前方被覆部２０１および後方被覆部２０３の側部近傍まで伸びている。 In addition, as shown in FIG. 2, two elastic members 252 extending along the side edges (in a state worn by the wearer) on both side portions (sites near the outer edge) of the crotch covering portion 202, Since it is arranged around the wearer's leg, hereinafter, the “leg elastic member 252”) is sandwiched and joined between the side seat 24 and the back seat 23. In FIGS. 1 to 3, reference numeral 252 is attached to only one leg elastic member at each side of the crotch covering portion 202 (the same applies to a waist elastic member 253 described later). The leg-surround elastic member 252 is in an expanded state when the disposable diaper 1 is unfolded, and the leg-surround elastic member 252 contracts so that the side seat 24 and the back seat 23 are directed toward the wearer and the inside. The leg gathers (also called leg gathers) are formed by standing up, and are in close contact with the vicinity of the base of the wearer's feet when the disposable diaper 1 is worn. Actually, the leg-hole elastic member 252 extends to the vicinity of the side portions of the front covering portion 201 and the rear covering portion 203 along the side edge of the main body portion 2.

さらに、図１に示すように、前方被覆部２０１および後方被覆部２０３のそれぞれには、上端部の縁（使い捨ておむつ１が着用者に着用された状態における上端部の縁であり、図２の本体部２の長手方向の両端部の縁）に沿って伸びる３本の弾性部材２５３（着用者に着用された状態にて、着用者の腰周りに配置されるため、以下、「腰周り弾性部材２５３」という。）が設けられる。腰周り弾性部材２５３は、伸張状態にてトップシート２１とバックシート２３とに挟まれて接合されており、腰周り弾性部材２５３が収縮することにより腰周りギャザー（ウエストギャザーとも呼ばれる）が形成され、使い捨ておむつ１の着用時に着用者の腰周りに密着する。使い捨ておむつ１では、弾性部材２５１〜２５３により本体部２が着用者に密着することにより、脚周り、股間部、腰周りからの尿等の漏出が防止される。 Further, as shown in FIG. 1, each of the front covering portion 201 and the rear covering portion 203 has an upper end edge (the edge of the upper end portion when the disposable diaper 1 is worn by the wearer, Three elastic members 253 extending along the longitudinal edges of the main body 2 are disposed around the waist of the wearer while being worn by the wearer. Member 253 "). The waist elastic member 253 is sandwiched and joined between the top sheet 21 and the back sheet 23 in an extended state, and the waist elastic member 253 contracts to form a waist gather (also referred to as a waist gather). When the disposable diaper 1 is worn, it is closely attached to the wearer's waist. In the disposable diaper 1, leakage of urine and the like from the legs, the crotch, and the waist is prevented by the main body 2 being in close contact with the wearer by the elastic members 251 to 253.

図３のトップシート２１は透液性の材料、例えば、親水性繊維により形成された不織布であり、着用者からの排泄物の水分を速やかに捕捉して吸収コア２２へと移動させる。トップシート２１として利用される不織布は、例えば、ポイントボンド不織布やエアスルー不織布、スパンボンド不織布であり、これらの不織布を形成する親水性繊維としては通常、セルロースやレーヨン、コットン等が用いられる。なお、トップシート２１として、表面を界面活性剤により親水処理した疎水性繊維（例えば、ポリプロピレン、ポリエチレン、ポリエステル、ポリアミド、ナイロン）にて形成された透液性の不織布が利用されてもよく、また、開孔を有するプラスチックフィルムが利用されてもよい。 The top sheet 21 in FIG. 3 is a non-woven fabric formed of a liquid-permeable material, for example, hydrophilic fibers, and quickly captures the moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunbond nonwoven fabrics, and cellulose, rayon, cotton, and the like are usually used as hydrophilic fibers that form these nonwoven fabrics. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

吸収コア２２は、親水性繊維（例えば、粉砕したパルプ繊維やセルロース繊維）に粒状の吸水性ポリマー（例えば、ＳＡＰ(Super Absorbent Polymer)）を混合したものをティッシュペーパーや透液性不織布等の被覆シートにより包み込んで形成され、トップシート２１を透過した水分を吸収して迅速に固定する。親水性繊維を包む被覆シートは、親水性繊維および吸水性ポリマーとホットメルト接着剤により接合されて、親水性繊維の型崩れ、および、吸水性ポリマーの脱落（特に、吸水後における脱落）を防止する。 The absorbent core 22 is made of a mixture of a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) such as a tissue paper or a liquid-permeable nonwoven fabric. It is formed by wrapping with a sheet and absorbs moisture that has passed through the top sheet 21 to quickly fix it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

バックシート２３は、撥水性または不透液性のプラスチックフィルムの外側（すなわち、吸収コア２２とは反対側）に不織布が積層された積層シートであり、トップシート２１を透過した水分、および、吸収コア２２に一旦吸収された水分が、バックシート２３の外側にしみ出すことを防止する。着用者の快適性の観点からは、プラスチックフィルムとして通気性を有するものが利用されることが好ましい。バックシート２３に利用される不織布は、例えば、スパンボンド不織布やメルトブロー不織布、ＳＭＳ（スパンボンド・メルトブロー・スパンボンド）不織布であり、必要に応じて撥水処理が施されてもよい。なお、バックシート２３としては、撥水性または不透液性の不織布やプラスチックフィルムが単体にて利用されてもよい。 The back sheet 23 is a laminated sheet in which a non-woven fabric is laminated on the outer side of a water-repellent or liquid-impervious plastic film (that is, the side opposite to the absorbent core 22). The moisture once absorbed by the core 22 is prevented from oozing out of the back sheet 23. From the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability. Nonwoven fabrics used for the backsheet 23 are, for example, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and SMS (spunbond / meltblown / spunbond) nonwoven fabrics, and may be subjected to water repellent treatment as necessary. As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric or plastic film may be used alone.

サイドシート２４は、撥水性または不透液性の不織布（例えば、スパンボンド不織布やメルトブロー不織布、ＳＭＳ不織布）やプラスチックフィルム、あるいは、これらの複合材料により形成される。使い捨ておむつ１の快適性向上の観点からは、側壁部を形成するサイドシート２４は、通気性を有することが好ましい。 The side sheet 24 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric), a plastic film, or a composite material thereof. From the viewpoint of improving the comfort of the disposable diaper 1, the side sheet 24 forming the side wall portion preferably has air permeability.

図２の弾性部材２５１〜２５３としては、例えば、ポリウレタン糸、帯状のポリウレタンフィルム、糸状または帯状の天然ゴム等が用いられ、ホットメルト接着剤、超音波接合、ヒートシール等によりバックシート２３等に接合される。好ましくは、繊度１００〜２５００デシテックスのポリウレタン糸が弾性部材２５１〜２５３として用いられ、１．１〜５．０倍に伸張された状態でゴム系のホットメルト接着剤によりバックシート２３等に接合される。 As the elastic members 251 to 253 in FIG. 2, for example, a polyurethane thread, a strip-like polyurethane film, a thread-like or strip-like natural rubber, or the like is used, and the back sheet 23 or the like is formed by hot melt adhesive, ultrasonic bonding, heat sealing, or the like. Be joined. Preferably, polyurethane yarn having a fineness of 100 to 2500 dtex is used as the elastic members 251 to 253, and is joined to the backsheet 23 or the like by a rubber-based hot melt adhesive in a state of being stretched 1.1 to 5.0 times. The

図２に示すように、使い捨ておむつ１は、本体部２の後方被覆部２０３の両側部（すなわち、幅方向の両端部）にそれぞれ設けられる１対の第１止着シート部４、および、１対の第１止着シート部４に重ねて後方被覆部２０３の両側部にそれぞれ設けられる１対の第２止着シート部５をさらに備える。図１に示すように、使い捨ておむつ１では、各第１止着シート部４が前方被覆部２０１の外面（すなわち、着用者に着用された状態において外側を向く面）上に止着されることにより、着用者の腰周りの本体部２による締め付けが行われ、各第２止着シート部５が前方被覆部２０１の外面上に止着されることにより、着用者の脚周りの本体部２による締め付けが行われる。第１止着シート部４および第２止着シート部５の本体は、例えば各種製法にて作製された不織布（もちろん、他の材料であってもよい。）にて形成され、好ましくは、上記バックシート２３にて例示した撥水性または不透液性の材料が用いられる。 As shown in FIG. 2, the disposable diaper 1 includes a pair of first fastening sheet portions 4 provided on both side portions (that is, both end portions in the width direction) of the rear covering portion 203 of the main body portion 2, and 1 It further includes a pair of second fastening sheet portions 5 provided on both sides of the rear covering portion 203 so as to overlap the pair of first fastening sheet portions 4. As shown in FIG. 1, in the disposable diaper 1, each 1st fastening sheet | seat part 4 is fastened on the outer surface (namely, surface which faces outside in the state worn by the wearer) of the front coating | coated part 201. Thus, the body portion 2 around the waist of the wearer is tightened, and each second fastening sheet portion 5 is fastened on the outer surface of the front covering portion 201, whereby the body portion 2 around the wearer's leg. Tightening is performed. The main bodies of the first fastening sheet portion 4 and the second fastening sheet portion 5 are formed of, for example, a non-woven fabric (of course, other materials may be used) produced by various manufacturing methods. The water repellent or liquid impervious material exemplified in the back sheet 23 is used.

図１および図２に示すように、各第１止着シート部４は、後方被覆部２０３の側部近傍において当該側部の縁に沿って広がる第１根元部４２、および、第１根元部４２から側方に突出する第１突出部４１を有する。第１突出部４１は、第１根元部４２の上部（着用者に着用された状態を示す図１の使い捨ておむつ１における胴周り開口３１側の部位であり、図２では下側の部位）に設けられることにより、第１突出部４１を引っ張った際に、第１止着シート部４により脚周りよりも腰周りが強く締め付けられることとなる。 As shown in FIGS. 1 and 2, each first fastening sheet portion 4 includes a first root portion 42 that extends along the edge of the side portion in the vicinity of the side portion of the rear covering portion 203, and a first root portion. The first protrusion 41 protrudes laterally from 42. The 1st protrusion part 41 is a part of the circumference opening 31 side in the disposable diaper 1 of FIG. 1 which shows the state worn by the wearer in the upper part of the 1st base part 42, and is the lower part in FIG. By providing, when the 1st protrusion part 41 is pulled, the waist periphery will be tightened more strongly than the leg periphery by the 1st fastening sheet | seat part 4. FIG.

また、第１突出部４１の先端には山型のつまみ部４１１が設けられ、つまみ部４１１の内面（すなわち、２つの主面のうち着用者に着用された状態において着用者側を向く面）にはフック部材４１２が設けられる。フック部材４１２は、鉤状や錨状、マッシュルーム状等の微細な多数のフック要素を有する微細フック構造が、一方の面に形成された面ファスナであり、他方の面がつまみ部４１１に接合される。図２では、フック部材４１２に平行斜線を付している（後述のフック部材５１２において同様）。 In addition, a mountain-shaped knob portion 411 is provided at the tip of the first protrusion 41, and the inner surface of the knob portion 411 (that is, the surface facing the wearer side when worn by the wearer among the two main surfaces). Is provided with a hook member 412. The hook member 412 is a surface fastener in which a fine hook structure having a large number of fine hook elements such as a hook shape, a hook shape, and a mushroom shape is formed on one surface, and the other surface is joined to the knob portion 411. The In FIG. 2, the hook member 412 is hatched in parallel (the same applies to the hook member 512 described later).

第１止着シート部４では、第１根元部４２が後方被覆部２０３の側部のほぼ上下全体に亘って広がっており、つまみ部４１１とは反対側の端部（すなわち、図２中にて符号４３を付す部位であり、以下、「取付部４３」という。図２では、右側の第１止着シート部４の取付部のみに符号を付しており、後述の取付部５３において同様である。）が第１根元部４２を延長した形状となっている。取付部４３は、本体部２のサイドシート２４とバックシート２３との間に挟まれており、第１止着シート部４は、取付部４３においてサイドシート２４およびバックシート２３にホットメルト接着剤を介して接合される。なお、第１止着シート部４とサイドシート２４およびバックシート２３との接合は、ヒートシールや超音波接合等により行われてもよい（第２止着シート部５において同様）。 In the first fastening sheet portion 4, the first root portion 42 extends over substantially the entire top and bottom of the side portion of the rear covering portion 203, and the end portion opposite to the knob portion 411 (that is, in FIG. 2). 2 and hereinafter referred to as “attachment portion 43.” In FIG.2, only the attachment portion of the first fastening sheet portion 4 on the right side is provided with a reference numeral, and the same applies to the attachment portion 53 described later. Is a shape in which the first base portion 42 is extended. The attachment part 43 is sandwiched between the side sheet 24 and the back sheet 23 of the main body part 2, and the first fastening sheet part 4 is attached to the side sheet 24 and the back sheet 23 in the attachment part 43. It is joined via. In addition, joining with the 1st fastening sheet | seat part 4, the side sheet | seat 24, and the back sheet | seat 23 may be performed by heat sealing, ultrasonic joining, etc. (same in the 2nd fastening sheet part 5).

図１および図２に示すように、各第２止着シート部５は、後方被覆部２０３の側部近傍において当該側部の縁に沿って広がり、第１根元部４２と重なる第２根元部５２、および、第２根元部５２から側方に突出するとともに下方（股下被覆部２０２側）にずれて第１突出部４１と重なる第２突出部５１を有する。第２突出部５１は、当該側部のほぼ上下全体に亘って広がる第２根元部５２の下部（着用者に着用された状態を示す図１の使い捨ておむつ１における脚周り開口３２側の部位）に設けられることにより、第２突出部５１を引っ張った際に、第２止着シート部５により腰周りよりも脚周りが強く締め付けられることとなる。 As shown in FIG. 1 and FIG. 2, each second fastening sheet portion 5 extends along the edge of the side portion in the vicinity of the side portion of the rear covering portion 203, and overlaps the first root portion 42. 52 and a second protruding portion 51 that protrudes laterally from the second root portion 52 and is shifted downward (in the crotch covering portion 202 side) and overlaps the first protruding portion 41. The 2nd protrusion part 51 is the lower part of the 2nd root part 52 extended over the whole upper and lower sides of the said side part (site | part by the side of the leg periphery opening 32 in the disposable diaper 1 of FIG. 1 which shows the state worn by the wearer). Accordingly, when the second projecting portion 51 is pulled, the leg periphery is tightened more strongly than the waist circumference by the second fastening sheet portion 5.

以上のように、使い捨ておむつ１では、後方被覆部２０３の両側部において１対の第２止着シート部５により引張力が付与される位置が、１対の第１止着シート部４により引張力が付与される位置よりも股下被覆部２０２に近くなっており、第１突出部４１および第２突出部５１を同じ力で引っ張った場合に、第１止着シート部４による腰周りの締め付け力が、第２止着シート部５による腰周りの締め付け力よりも大きくなり、第２止着シート部５による脚周りの締め付け力が、第１止着シート部４による脚周りの締め付け力よりも大きくなる。 As described above, in the disposable diaper 1, the position where the tensile force is applied by the pair of second fastening sheet portions 5 on both sides of the rear covering portion 203 is pulled by the pair of first fastening sheet portions 4. When the first projecting portion 41 and the second projecting portion 51 are pulled with the same force, closer to the crotch covering portion 202 than the position where the force is applied, tightening around the waist by the first fastening sheet portion 4 The force is greater than the tightening force around the waist by the second fastening sheet portion 5, and the fastening force around the legs by the second fastening sheet portion 5 is greater than the fastening force around the legs by the first fastening sheet portion 4. Also grows.

第２突出部５１の先端には山型のつまみ部５１１が設けられ、つまみ部５１１の内面にはフック部材４１２と同様の構造のフック部材５１２が設けられる。また、第２止着シート部５では、つまみ部５１１とは反対側の端部（すなわち、図２中にて符号５３を付す部位であり、以下、「取付部５３」という。）が第２根元部５２を延長した形状となっている。取付部５３は、本体部２のサイドシート２４とバックシート２３との間に挟まれており、第２止着シート部５は、取付部５３においてサイドシート２４およびバックシート２３にホットメルト接着剤を介して接合される。 A mountain-shaped knob portion 511 is provided at the tip of the second projecting portion 51, and a hook member 512 having the same structure as the hook member 412 is provided on the inner surface of the knob portion 511. Further, in the second fastening sheet portion 5, an end portion on the opposite side to the knob portion 511 (that is, a portion denoted by reference numeral 53 in FIG. 2, hereinafter referred to as “attachment portion 53”) is the second. The root portion 52 is extended. The attachment part 53 is sandwiched between the side sheet 24 and the back sheet 23 of the main body part 2, and the second fastening sheet part 5 is attached to the side sheet 24 and the back sheet 23 in the attachment part 53. It is joined via.

図２に示すように、本体部２、１対の第１止着シート部４、および、１対の第２止着シート部５が広げられた状態において、第２止着シート部５の第２突出部５１が第２根元部５２と接続する部分（図２中にて符号５４を付す部分であり、以下、「境界部５４」という。）が、脚周り弾性部材２５２を延長した線（すなわち、後方被覆部２０３上における脚周り弾性部材２５２の端部近傍にて脚周り弾性部材２５２が伸びる方向に当該端部から伸ばした線）上に配置される。なお、図２では、左側の第２止着シート部５の境界部のみに符号５４を付している（後述の境界部４４において同様）。 As shown in FIG. 2, in the state in which the main body portion 2, the pair of first fastening sheet portions 4, and the pair of second fastening sheet portions 5 are spread, 2 A portion where the protruding portion 51 is connected to the second root portion 52 (a portion denoted by reference numeral 54 in FIG. 2, hereinafter referred to as a “boundary portion 54”) is a line extending the leg-around elastic member 252 ( That is, it is disposed on the rear covering portion 203 in the vicinity of the end of the leg-surrounding elastic member 252 on a line extending from the end in the direction in which the leg-surrounding elastic member 252 extends. In FIG. 2, reference numeral 54 is attached only to the boundary portion of the left second fastening sheet portion 5 (the same applies to the boundary portion 44 described later).

第１止着シート部４の第１突出部４１が第１根元部４２と接続する部分（図２中にて符号４４を付す部分であり、以下、「境界部４４」という。）は、腰周り弾性部材２５３を延長した線の近傍に配置される。また、第２止着シート部５の境界部５４は、腰周り弾性部材２５３を延長した線から離れており、第１止着シート部４の境界部４４は、脚周り弾性部材２５２を延長した線から離れている。使い捨ておむつ１では、第１突出部４１および第２突出部５１を引っ張ることにより、境界部４４，５４にて第１根元部４２および第２根元部５２から離れる方向に引張力が作用するため、腰周り弾性部材２５３の伸縮量は、主として１対の第１止着シート部４により調整され、脚周り弾性部材２５２の伸縮量は主として１対の第２止着シート部５により調整される。 A portion where the first protruding portion 41 of the first fastening sheet portion 4 is connected to the first root portion 42 (a portion denoted by reference numeral 44 in FIG. 2, hereinafter referred to as “boundary portion 44”) is a waist. The surrounding elastic member 253 is disposed in the vicinity of the extended line. Further, the boundary portion 54 of the second fastening sheet portion 5 is away from the line extending the waist elastic member 253, and the boundary portion 44 of the first fastening sheet portion 4 extends the leg elastic member 252. Away from the line. In the disposable diaper 1, by pulling the first projecting portion 41 and the second projecting portion 51, a tensile force acts in the direction away from the first root portion 42 and the second root portion 52 at the boundary portions 44, 54. The amount of expansion / contraction of the waist elastic member 253 is mainly adjusted by the pair of first fastening sheet portions 4, and the amount of expansion / contraction of the leg elastic member 252 is mainly adjusted by the pair of second fastening sheet portions 5.

未使用の使い捨ておむつ１では、各止着シート部４，５のつまみ部４１１，５１１が折り返された状態で、フック部材４１２，５１２が当該止着シート部４，５の他の領域上に仮係合されている。そして、使い捨ておむつ１を使用する際に、各止着シート部４，５において、つまみ部４１１，５１１の先端等が使用者により摘まれてつまみ部４１１，５１１が引っ張られることにより、フック部材４１２，５１２が止着シート部４，５から引き剥がされ（すなわち、フック部材４１２，５１２の仮係合が解除され）、図２の止着シート部４，５に示すように、つまみ部４１１，５１１が伸ばされた状態とされる。 In the unused disposable diaper 1, the hook members 412, 512 are temporarily placed on other regions of the fastening sheet portions 4, 5 with the knob portions 411, 511 of the fastening sheet portions 4, 5 folded back. Is engaged. When the disposable diaper 1 is used, the hook members 411 and 511 are pulled by the user by pulling the tips of the knob portions 411 and 511 in the respective fastening sheet portions 4 and 5, so that the hook member 412 is pulled. 512 are peeled off from the fastening sheet portions 4 and 5 (that is, the temporary engagement of the hook members 412 and 512 is released), and as shown in the fastening sheet portions 4 and 5 in FIG. 511 is stretched.

図１および図２に示すように、前方被覆部２０１の外面には、幅方向に長い矩形のフロンタルテープ２６が設けられる。フロンタルテープ２６は、一方の面に微細な多数のループ要素を有する微細ループ構造が形成された不織布や織布、編み物等、あるいは、これらの材料とプラスチックフィルムとが積層された複合材料であり、他方の面が前方被覆部２０１に接合されている。本実施の形態では、合成繊維により形成された微細ループ構造を有する編み物とプラスチックフィルムとが積層された複合材料が、フロンタルテープ２６として利用される。 As shown in FIGS. 1 and 2, a rectangular frontal tape 26 that is long in the width direction is provided on the outer surface of the front covering portion 201. The frontal tape 26 is a non-woven fabric, woven fabric, knitted fabric or the like in which a fine loop structure having a number of fine loop elements is formed on one surface, or a composite material in which these materials and a plastic film are laminated, The other surface is joined to the front covering portion 201. In the present embodiment, a composite material in which a knitted fabric having a fine loop structure formed of synthetic fibers and a plastic film are laminated is used as the frontal tape 26.

使い捨ておむつ１の着用者への装着時には、図２に示す本体部２の前方被覆部２０１および後方被覆部２０３を着用者の前側および後側にそれぞれ当接させ、第２止着シート部５の内側に配置される１対の第１止着シート部４のフック部材４１２を、図１に示すように、前方被覆部２０１に設けられたフロンタルテープ２６に止着することにより、着用者の腰周りの本体部２による締め付けが行われる。このとき、第１止着シート部４が幅方向にある程度の伸縮性を有していることにより、着用者の腰周りを堅固に締め付けることが可能となる（第２止着シート部５において同様）。続いて、１対の第２止着シート部５の内面をそれぞれ１対の第１止着シート部４の外面に部分的に当接させつつ、フック部材５１２をフロンタルテープ２６に止着することにより、着用者の脚周りの本体部２による締め付けが行われ、使い捨ておむつ１の着用者への装着が完了する。 When the disposable diaper 1 is attached to the wearer, the front covering portion 201 and the rear covering portion 203 of the main body 2 shown in FIG. 2 are brought into contact with the wearer's front side and rear side, respectively, and the second fastening sheet portion 5 As shown in FIG. 1, the hook members 412 of the pair of first fastening sheet portions 4 arranged on the inner side are fastened to the frontal tape 26 provided on the front covering portion 201, so that the waist of the wearer Tightening is performed by the surrounding main body 2. At this time, since the first fastening sheet portion 4 has a certain degree of stretchability in the width direction, it is possible to firmly tighten the waist around the wearer (the same applies to the second fastening sheet portion 5). ). Subsequently, the hook member 512 is fixed to the frontal tape 26 while the inner surfaces of the pair of second fixing sheet portions 5 are partially brought into contact with the outer surfaces of the pair of first fixing sheet portions 4 respectively. Thus, the body portion 2 around the leg of the wearer is tightened, and the wearing of the disposable diaper 1 to the wearer is completed.

使い捨ておむつ１の装着において、各第２止着シート部５を脚周り弾性部材２５２の延長線方向に引っ張って本体部２による脚周りの締め付け力を強くすることも考えられ、この場合に、仮にフック部材５１２の位置が第１止着シート部４に重なったとしても、使い捨ておむつ１では、フック部材５１２を不織布により形成される第１止着シート部４の外面に止着することが可能となっている。このように、使い捨ておむつ１では、１対の第２止着シート部５が、前方被覆部２０１の外面であるフロンタルテープ２６、および、１対の第１止着シート部４の外面の双方に止着可能であるため、脚周りの締め付けの程度が柔軟に調整可能とされる。 In the mounting of the disposable diaper 1, it may be possible to increase the tightening force around the legs by the main body 2 by pulling each second fastening sheet portion 5 in the direction of the extension of the leg elastic member 252. In this case, Even if the position of the hook member 512 overlaps the first fastening sheet portion 4, the disposable diaper 1 can fasten the hook member 512 to the outer surface of the first fastening sheet portion 4 formed of a nonwoven fabric. It has become. Thus, in the disposable diaper 1, the pair of second fastening sheet portions 5 are provided on both the frontal tape 26 that is the outer surface of the front covering portion 201 and the outer surfaces of the pair of first fastening sheet portions 4. Since it can be fastened, the degree of tightening around the legs can be adjusted flexibly.

実際には、第１止着シート部４はフロンタルテープ２６と着脱自在とされ、第２止着シート部５も、第１止着シート部４の外面およびフロンタルテープ２６と着脱自在とされているため、着用者の腰周りおよび脚周りの本体部２による締め付けの程度を繰り返し調整することが可能となっている。なお、前方被覆部２０１の外面に止着された第１止着シート部４上に第２止着シート部５を止着する場合も、実質的には、第２止着シート部５が前方被覆部２０１の外面上に止着されていると捉えることができる。使い捨ておむつ１では、第１止着シート部４および第２止着シート部５が不織布により形成されているため、着用者の腰周りにおける通気性が向上し、使い捨ておむつ１の快適性が向上される。 Actually, the first fastening sheet 4 is detachable from the frontal tape 26, and the second fastening sheet 5 is also detachable from the outer surface of the first fastening sheet 4 and the frontal tape 26. Therefore, it is possible to repeatedly adjust the degree of tightening by the main body 2 around the waist and legs of the wearer. Even when the second fastening sheet portion 5 is fastened on the first fastening sheet portion 4 fastened to the outer surface of the front covering portion 201, the second fastening sheet portion 5 is substantially forward. It can be understood that it is fixed on the outer surface of the covering portion 201. In the disposable diaper 1, since the 1st fastening sheet | seat part 4 and the 2nd fastening sheet | seat part 5 are formed with the nonwoven fabric, the breathability around a wearer's waist improves and the comfort of the disposable diaper 1 improves. The

ここで、特開２００２−９５６９３号公報（特許文献２）の使い捨ておむつと同様の構造を有する比較例の使い捨ておむつについて述べる。図４は比較例の使い捨ておむつ９の後方被覆部９１の側部近傍を示す図である。図４の使い捨ておむつ９では、後方被覆部９１の側部に設けられる一方のファスニングテープ９１１を前方被覆部の外面に止着することにより、着用者の腰周りの本体部による締め付けが可能となる。また、股下被覆部９２から後方被覆部９１へと至る部分の側縁に沿って伸びるように、後方被覆部９１の側部に配置される他方のファスニングテープ９１２を前方被覆部の外面に止着することにより、着用者の脚周りの本体部による締め付けが可能となる。 Here, the disposable diaper of the comparative example which has the structure similar to the disposable diaper of Unexamined-Japanese-Patent No. 2002-9593 (patent document 2) is described. FIG. 4 is a view showing the vicinity of the side portion of the rear covering portion 91 of the disposable diaper 9 of the comparative example. In the disposable diaper 9 of FIG. 4, fastening by the main body around the waist of the wearer is possible by fastening one fastening tape 911 provided on the side of the rear covering 91 to the outer surface of the front covering. . Also, the other fastening tape 912 disposed on the side of the rear covering portion 91 is fixed to the outer surface of the front covering portion so as to extend along the side edge of the portion extending from the crotch covering portion 92 to the rear covering portion 91. By doing so, it is possible to tighten the body part around the wearer's leg.

しかしながら、比較例の使い捨ておむつ９では、後方被覆部９１の側部において、２つのファスニングテープ９１１，９１２により引っ張られる位置が、同じシート上にて互いに近接していることにより、使い捨ておむつ９を着用した状態にて２つのファスニングテープ９１１，９１２の間の部位に皺が発生して着用者において違和感が生じるとともに、各ファスニングテープ９１１，９１２による締め付け調整の自由度も低くなってしまう。図４中に符号９３を付す二点鎖線にて示すように、後方被覆部９１の側部に切れ目を設けて２つのファスニングテープ９１１，９１２が取り付けられる部位を互いに分離することにより、皺の発生を防止するとともに、各ファスニングテープ９１１，９１２による締め付け調整の自由度を向上して、着用者の腰周りおよび脚周りを適切に締め付けることも可能であるが、切れ目の先端（図４中にて符号９３１を付す点にて示す。）にて孔が開いた状態となるため、排泄物が漏出する可能性がある。 However, in the disposable diaper 9 of the comparative example, the disposable diaper 9 is worn because the positions pulled by the two fastening tapes 911 and 912 are close to each other on the same sheet in the side portion of the rear covering portion 91. In this state, a wrinkle is generated in a portion between the two fastening tapes 911 and 912, and the wearer feels uncomfortable, and the degree of freedom of the tightening adjustment by the fastening tapes 911 and 912 is reduced. As shown by a two-dot chain line denoted by reference numeral 93 in FIG. 4, generation of wrinkles occurs by providing a cut in the side portion of the rear covering portion 91 and separating the portions to which the two fastening tapes 911 and 912 are attached to each other. It is also possible to improve the degree of freedom of tightening adjustment with the fastening tapes 911 and 912, and tighten the waist and legs of the wearer appropriately. Since a hole is opened at a point denoted by reference numeral 931), excrement may leak out.

これに対し、図２の使い捨ておむつ１では、後方被覆部２０３の両側部近傍にて、着用者の腰周りを締め付けるための１対の第１止着シート部４と、着用者の脚周りを締め付けるための１対の第２止着シート部５とが重なり、止着シート部の２重構造が形成される。これにより、着用者の腰周りおよび脚周りを適切に締め付けつつ、第１止着シート部４と第２止着シート部５との間からの排泄物の漏出を防止することができる。 On the other hand, in the disposable diaper 1 in FIG. 2, in the vicinity of both sides of the rear covering portion 203, the pair of first fastening sheet portions 4 for tightening around the waist of the wearer and the circumference of the wearer's legs. A pair of second fastening sheet portions 5 for tightening overlap to form a double structure of the fastening sheet portions. Thereby, the leakage of excrement from between the 1st fastening sheet | seat part 4 and the 2nd fastening sheet | seat part 5 can be prevented, tightening a wearer's waist circumference and leg circumference | surroundings appropriately.

また、使い捨ておむつ１では、１対の第２止着シート部５が１対の第１止着シート部４の外面に接することにより、使い捨ておむつ１の装着の際に、第１止着シート部４の止着により本体部２を着用者に装着した後に、第２止着シート部５を止着して、着用者の脚周りの締め付けを容易に行うことができる。また、第２止着シート部５のフック部材５１２がフロンタルテープ２６上に止着される場合には、第１止着シート部４の止着が意図せずに解除されることを、第２止着シート部５により抑制することができる。 Further, in the disposable diaper 1, the pair of second fastening sheet portions 5 are in contact with the outer surfaces of the pair of first fastening sheet portions 4. After the body part 2 is attached to the wearer by fastening 4, the second fastening sheet part 5 can be fastened to easily tighten around the wearer's leg. Further, when the hook member 512 of the second fastening sheet portion 5 is fastened on the frontal tape 26, the second fastening sheet portion 4 is unintentionally released. It can be suppressed by the fastening sheet portion 5.

さらに、後方被覆部２０３の両側部に接合される１対の第１止着シート部４が、両側部近傍において長手方向に広がる第１根元部４２を有し、後方被覆部２０３の両側部に接合される１対の第２止着シート部５も、両側部近傍において長手方向に広がる第２根元部５２を有することにより、第１止着シート部４および第２止着シート部５を本体部２に強固に接合しつつ後方被覆部２０３の両側部近傍からの排泄物の漏出をさらに防止することができる。 Further, the pair of first fastening sheet portions 4 joined to both side portions of the rear covering portion 203 has first root portions 42 that extend in the longitudinal direction in the vicinity of the both side portions, and on both side portions of the rear covering portion 203. The pair of second fastening sheet portions 5 to be joined also has a second root portion 52 that extends in the longitudinal direction in the vicinity of both side portions, so that the first fastening sheet portion 4 and the second fastening sheet portion 5 are the main body. Leakage of excrement from the vicinity of both side portions of the rear covering portion 203 can be further prevented while firmly joined to the portion 2.

使い捨ておむつ１では、本体部２および１対の第２止着シート部５が広げられた状態において、第２止着シート部５の第２突出部５１が、脚周り弾性部材２５２の延長線上に位置し、腰周り弾性部材２５３の延長線上に位置しないことにより、腰周りの締め付けに大きく影響を与えることなく、着用者の脚周りを堅固に締め付けることが可能となる。 In the disposable diaper 1, the second projecting portion 51 of the second fastening sheet portion 5 is on the extension line of the leg-around elastic member 252 in a state where the main body portion 2 and the pair of second fastening sheet portions 5 are expanded. By being positioned and not positioned on the extension line of the waist elastic member 253, it is possible to firmly tighten around the wearer's leg without greatly affecting the tightening around the waist.

上記形態は、様々な変形が可能である。 The shaped state is, various modifications are possible.

図２の使い捨ておむつ１では、第２止着シート部５の境界部５４が、第１止着シート部４の境界部４４よりも幅方向の内側（後方被覆部２０３側）に配置されることにより、着用者の脚周りの締め付けの調整が容易となるが、使い捨ておむつ１の設計によっては、図５に示すように、第１止着シート部４の境界部４４が、第２止着シート部５の境界部５４よりも内側に配置されてもよく、さらに、図６に示すように、第１止着シート部４の境界部４４が、第２止着シート部５の境界部５４と幅方向の同位置に配置されてもよい。 In the disposable diaper 1 of FIG. 2, the boundary part 54 of the 2nd fastening sheet | seat part 5 is arrange | positioned rather than the boundary part 44 of the 1st fastening sheet | seat part 4 in the width direction inner side (back covering part 203 side). However, depending on the design of the disposable diaper 1, the boundary portion 44 of the first fastening sheet portion 4 may be a second fastening sheet, as shown in FIG. The boundary portion 44 of the first fastening sheet portion 4 and the boundary portion 54 of the second fastening sheet portion 5 may further be disposed inside the boundary portion 54 of the portion 5 as shown in FIG. They may be arranged at the same position in the width direction.

また、図２の使い捨ておむつ１では、第１突出部４１および第２突出部５１が長手方向にずれた状態にて、第１根元部４２および第２根元部５２から幅方向にそれぞれ突出することにより、第１突出部４１および第２突出部５１のそれぞれの引張量にかかわらず、第１止着シート部４および第２止着シート部５を前方被覆部２０１の外面上に確実に止着することが可能となるが、例えば、図７に示すように、第２突出部５１ａが脚周り弾性部材２５２を延長した方向に第２根元部５２ａから突出するように、第２止着シート部５ａを設けることも可能である。この場合、着用者の脚周りの締め付けをより容易に行うことができる。 Moreover, in the disposable diaper 1 of FIG. 2, it protrudes in the width direction from the 1st root part 42 and the 2nd root part 52, respectively, in the state which the 1st protrusion part 41 and the 2nd protrusion part 51 shifted | deviated to the longitudinal direction. Thus, the first fastening sheet portion 4 and the second fastening sheet portion 5 are securely fastened on the outer surface of the front covering portion 201 regardless of the respective tensile amounts of the first projecting portion 41 and the second projecting portion 51. For example, as shown in FIG. 7, the second fastening sheet portion is formed so that the second protruding portion 51 a protrudes from the second root portion 52 a in the direction in which the leg-around elastic member 252 is extended. It is also possible to provide 5a. In this case, tightening around the leg of the wearer can be performed more easily.

さらに、図８に示すように、第１止着シート部４ｂおよび第２止着シート部５ｂのそれぞれにおいて、第１根元部４２および第２根元部５２が省略されてもよい。この場合でも、後方被覆部２０３の両端部の近傍において、第１止着シート部４ｂの第１突出部４１ｂの下部（図８中の上側の部位）と、第２止着シート部５ｂの第２突出部５１ｂの上部（図８中の下側の部位）とが重なっていることにより、着用者の腰周りおよび脚周りを適切に締め付けつつ、第１止着シート部４ｂと第２止着シート部５ｂとの間からの排泄物の漏出を防止することができる。 Further, as shown in FIG. 8, the first root portion 42 and the second root portion 52 may be omitted in each of the first fastening sheet portion 4b and the second fastening sheet portion 5b. Even in this case, in the vicinity of both end portions of the rear covering portion 203, the lower portion (the upper portion in FIG. 8) of the first protruding portion 41b of the first fixing sheet portion 4b and the second fixing sheet portion 5b. 2 The upper part of the protrusion 51b (the lower part in FIG. 8) overlaps the first fastening sheet part 4b and the second fastening while appropriately tightening around the waist and legs of the wearer. Leakage of excrement from between the sheet portion 5b can be prevented.

使い捨ておむつ１では、前方被覆部２０１の各側部に第１止着シート部４および第２止着シート部５が設けられ、第１止着シート部４および第２止着シート部５が後方被覆部２０３の外面上に止着されて使い捨ておむつが着用者に装着されてもよい。このように、使い捨ておむつ１では、着用者の前側に接する前方被覆部２０１、および、後側に接する後方被覆部２０３のうち一方の被覆部の各側部に、他方の被覆部の外面上に止着される第１止着シート部４および第２止着シート部５が設けられる。 In the disposable diaper 1, the 1st fastening sheet | seat part 4 and the 2nd fastening sheet | seat part 5 are provided in each side part of the front coating | coated part 201, and the 1st fastening sheet | seat part 4 and the 2nd fastening sheet | seat part 5 are back. The disposable diaper may be attached to the wearer while being fixed on the outer surface of the covering portion 203. As described above, in the disposable diaper 1, the front covering portion 201 in contact with the wearer's front side and the rear covering portion 203 in contact with the rear side on each side portion of one covering portion on the outer surface of the other covering portion. A first fastening sheet portion 4 and a second fastening sheet portion 5 to be fastened are provided.

図１の使い捨ておむつ１では、第１止着シート部４の一部、および、第２止着シート部５の一部（すなわち、フック部材４１２，５１２）が前方被覆部２０１の外面に止着されるが、例えば、フロンタルテープ２６、並びに、フック部材４１２，５１２を省略するとともに前方被覆部２０１の外面の全体にフック部材が設けられることにより、不織布にて形成される（または、内面全体にフロンタルテープ２６と同じ部材が設けられる）第１止着シート部４のおよそ全体が前方被覆部２０１の外面に止着されてもよい。また、第１止着シート部４の内側（着用者側）に第２止着シート部５が配置されてもよく、この場合に、不織布にて形成される第２止着シート部５のおよそ全体が前方被覆部２０１の外面に止着されてもよい。このように、使い捨ておむつでは、第１止着シート部４の少なくとも一部、および、第２止着シート部５の少なくとも一部が前方被覆部２０１の外面に止着されることにより、着用者の腰周りおよび脚周りの本体部２による締め付けが可能となる。なお、第１止着シート部４の内側に第２止着シート部５が配置される場合には、第２止着シート部５を前方被覆部２０１の外面に止着して着用者の脚周りを本体部２により締め付けた後、第１止着シート部４が前方被覆部２０１の外面に止着され、着用者の腰周りの締め付けが行われる。 In the disposable diaper 1 of FIG. 1, a part of the first fastening sheet part 4 and a part of the second fastening sheet part 5 (that is, the hook members 412 and 512) are fastened to the outer surface of the front covering part 201. However, for example, the frontal tape 26 and the hook members 412 and 512 are omitted, and the hook member is provided on the entire outer surface of the front covering portion 201, thereby forming the nonwoven fabric (or the entire inner surface). (The same member as the frontal tape 26 is provided) The substantially entire first fastening sheet portion 4 may be fastened to the outer surface of the front covering portion 201. Moreover, the 2nd fastening sheet | seat part 5 may be arrange | positioned inside the 1st fastening sheet | seat part 4 (wearer side), In this case, the 2nd fastening sheet | seat part 5 formed with a nonwoven fabric is about. The whole may be fixed to the outer surface of the front covering portion 201. As described above, in the disposable diaper, at least a part of the first fastening sheet portion 4 and at least a part of the second fastening sheet portion 5 are fastened to the outer surface of the front covering portion 201, so that the wearer The body portion 2 around the waist and legs can be tightened. In addition, when the 2nd fastening sheet | seat part 5 is arrange | positioned inside the 1st fastening sheet | seat part 4, the 2nd fastening sheet | seat part 5 is fastened to the outer surface of the front coating | coated part 201, and a wearer's leg | leg is attached. After the periphery is fastened by the main body 2, the first fastening sheet portion 4 is fastened to the outer surface of the front covering portion 201, and the wearer's waist is fastened.

また、使い捨ておむつ１では、前方被覆部２０１において、不織布の面である外面が第１止着シート部４および第２止着シート部５のフック部材４１２，５１２と十分な係合力にて係合可能とされるのであれば、フロンタルテープ２６を省略して、使い捨ておむつの製造コストが削減されてもよい。さらに、第１止着シート部４および第２止着シート部５の内面と前方被覆部２０１の外面との止着は、一方に粘着シールを設け、他方にプラスチック等のフィルムを設けることにより、着脱自在な状態にて実現されてもよい。もちろん、使い捨ておむつの設計によっては、粘着シールを用いる場合に使い捨ておむつの製造コストを削減するために、他方の部材にてフィルムを省略し、第１止着シート部４および第２止着シート部５と前方被覆部２０１の外面との着脱の（多数回の）繰り返しが不能とされてもよい。 Moreover, in the disposable diaper 1, the outer surface which is a nonwoven fabric surface engages with the hook members 412 and 512 of the first fastening sheet portion 4 and the second fastening sheet portion 5 with sufficient engagement force in the front covering portion 201. If possible, the frontal tape 26 may be omitted to reduce the manufacturing cost of the disposable diaper. Further, the fastening between the inner surface of the first fastening sheet portion 4 and the second fastening sheet portion 5 and the outer surface of the front covering portion 201 is provided with an adhesive seal on one side and a film such as plastic on the other side, It may be realized in a detachable state. Of course, depending on the design of the disposable diaper, in order to reduce the manufacturing cost of the disposable diaper when the adhesive seal is used, the film is omitted from the other member, and the first fastening sheet portion 4 and the second fastening sheet portion. 5 and the outer surface of the front covering portion 201 may not be allowed to be attached and detached (multiple times).

図２の使い捨ておむつ１では、第１止着シート部４および第２止着シート部５が本体部２とは別部材として設けられるが、第１止着シート部４をサイドシート２４の一部として形成し、第２止着シート部５をバックシート２３の一部として形成して、第１止着シート部４および第２止着シート部５が本体部２と一体的に形成されてもよい。また、第１止着シート部４と第２止着シート部５とは互いに異なる材料にて形成されてもよく、この場合に、一方が伸縮性を有する材料にて形成され、他方が伸縮性を有しない材料にて形成されてもよい。 In the disposable diaper 1 of FIG. 2, the first fastening sheet part 4 and the second fastening sheet part 5 are provided as separate members from the main body part 2, but the first fastening sheet part 4 is a part of the side sheet 24. The second fastening sheet portion 5 is formed as a part of the back sheet 23, and the first fastening sheet portion 4 and the second fastening sheet portion 5 are formed integrally with the main body portion 2. Good. Further, the first fastening sheet portion 4 and the second fastening sheet portion 5 may be formed of different materials. In this case, one is formed of a stretchable material and the other is stretchable. It may be formed of a material having no.

１使い捨ておむつ
２本体部
４，４ｂ第１止着シート部
５，５ａ，５ｂ第２止着シート部
４１，４１ｂ第１突出部
４２第１根元部
５１，５１ａ，５１ｂ第２突出部
５２，５２ａ第２根元部
２０１前方被覆部
２０２股下被覆部
２０３後方被覆部
２５２脚周り弾性部材
２５３腰周り弾性部材 DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Main-body part 4,4b 1st fastening sheet part 5,5a, 5b 2nd fastening sheet part 41,41b 1st protrusion part 42 1st base part 51,51a, 51b 2nd protrusion part 52,52a Second root portion 201 Front covering portion 202 Inseam covering portion 203 Rear covering portion 252 Leg elastic member 253 Waist elastic member

Claims

A disposable diaper that receives excrement from the wearer,
A front covering portion covering the front side of the wearer; a rear covering portion covering the rear side of the wearer; and a crotch covering portion facing the wearer's crotch portion between the front covering portion and the rear covering portion. A substantially sheet-shaped body,
It is joined to both sides of one covering part among the front covering part and the back covering part, and at least a part is fixed on the outer surface of the other covering part, thereby the waist around the wearer's waist A pair of first fastening sheets that are tightened by the main body,
By being joined to the both side portions of the one covering portion and being fixed at least partially on the outer surface of the other covering portion, the body portion around the leg of the wearer is tightened. A pair of second fastening sheet portions;
With
The disposable diaper, wherein the pair of first fastening sheet portions and the pair of second fastening sheet portions overlap in the vicinity of the both side portions.

The disposable diaper according to claim 1,
The disposable diaper, wherein the pair of second fastening sheet portions are in contact with outer surfaces of the pair of first fastening sheet portions.

The disposable diaper according to claim 2,
The disposable diaper characterized in that the pair of second fastening sheet portions can be fastened to both the outer surface of the other covering portion and the outer surface of the pair of first fastening sheet portions.

The disposable diaper according to any one of claims 1 to 3 ,
The pair of first fastening sheet portions,
A first root portion extending along an edge of the both side portions;
A first projecting portion projecting laterally from the first root portion;
With
The pair of second fastening sheet portions,
A second root portion extending along an edge of the both side portions and overlapping the first root portion;
A second protrusion that protrudes laterally from the second root and shifts downward and overlaps the first protrusion;
A disposable diaper characterized by comprising.

The disposable diaper according to claim 4,
The disposable diaper characterized by the said 1st root part and the said 2nd root part spreading over substantially the whole upper and lower sides of the said both sides of said one coating | coated part.

The disposable diaper according to claim 4 or 5,
The main body is
A waist elastic member that forms a waist gather by being joined and contracted along an edge of an upper end of the front covering portion and the rear covering portion,
A leg elastic member that forms a leg gather by joining and contracting along edges of both sides of the crotch covering portion;
With
In a state where the main body portion and the pair of second fastening sheet portions are spread, the second projecting portion is located on an extension line of the leg elastic member and is located on an extension line of the waist elastic member Disposable diaper characterized by not.