JP5053806B2

JP5053806B2 - Sanitary napkin

Info

Publication number: JP5053806B2
Application number: JP2007293914A
Authority: JP
Inventors: 哲哉草川; 達之山口; 進介長原
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2007-11-13
Filing date: 2007-11-13
Publication date: 2012-10-24
Anticipated expiration: 2027-11-13
Also published as: JP2009118928A

Description

本発明は、生理用ナプキン等の吸収性物品に関し、詳しくは、立体ギャザーを有する吸収性物品に関する。 The present invention relates to an absorbent article such as a sanitary napkin, and more particularly to an absorbent article having a three-dimensional gather.

従来、生理用ナプキンやおむつ等の吸収性物品には、一対の立体ギャザーを設けたものがある。この種の吸収性物品は、本体（吸収体を含む吸収性物品の主要構成部分）の長手方向両側部からの横漏れを防止するために、一対の立体ギャザーが、本体の肌当接面側の長手方向両側部に設けられている。これにより、吸収性物品の肌当接面側における長手方向両側部に液の拡散を抑制する領域が形成され、場合によっては立体的な壁が形成され、液が横方向へ移動することが防止されている。 Conventionally, some absorbent articles such as sanitary napkins and diapers are provided with a pair of three-dimensional gathers. This type of absorbent article has a pair of three-dimensional gathers on the skin contact surface side of the main body in order to prevent side leakage from both sides in the longitudinal direction of the main body (the main component of the absorbent article including the absorbent body). Are provided on both sides in the longitudinal direction. Thereby, the area | region which suppresses spreading | diffusion of a liquid is formed in the longitudinal direction both sides in the skin contact surface side of an absorbent article, and a three-dimensional wall is formed depending on the case, and it prevents that a liquid moves to a horizontal direction. Has been.

また、生理用ナプキンをはじめとする、下着の内面上に配置して使用する吸収性物品には、ズレ止めを図るために、本体を下着に固定する固定部が設けられている。このような固定部を有する吸収性物品として、例えば特許文献１には、本体と、該本体の長手方向左右両側部に配された一対の立体ギャザーとを有し、該立体ギャザーの長手方向後端寄りで且つ該立体ギャザーの長手方向に沿う内側縁よりも該本体の幅方向外方に位置する、該本体の２つの隅部（第２ウイング状フラップにおける長手方向後端寄りの領域）それぞれの非肌当接面側に、前記固定部としての粘着剤層が設けられている生理用ナプキンが記載されている（特許文献１の図面の〔図１１〕の記載等参照）。 In addition, absorbent articles that are used on the inner surface of an undergarment such as a sanitary napkin are provided with a fixing portion that fixes the main body to the undergarment in order to prevent misalignment. As an absorbent article having such a fixing portion, for example, Patent Document 1 includes a main body and a pair of three-dimensional gathers arranged on both left and right sides in the longitudinal direction of the main body. Two corners (regions near the rear end in the longitudinal direction of the second wing-shaped flap) of the main body, which are located near the end and outside the inner edge along the longitudinal direction of the three-dimensional gather, in the width direction of the main body A sanitary napkin in which a pressure-sensitive adhesive layer as the fixing portion is provided on the non-skin contact surface side is described (see description of [FIG. 11] in the drawing of Patent Document 1).

特開２００１−２７６１２３号公報JP 2001-276123 A

特許文献１に記載の如き立体ギャザーを有する吸収性物品においては、着用者の身体の動きにより、身体側に向けて起立すべき立体ギャザーが吸収性物品の内方側に倒れたり、適切な位置からずれたり、よれたりすることがあり、この結果、立体ギャザーの機能が充分に発現されず、横漏れが発生するという問題があった。立体ギャザーの身体に対する追従性を高め、倒れ込み等の立体ギャザーに関する不都合の発生を効果的に防止し得る技術は、未だ提供されていない。 In the absorbent article having a three-dimensional gather as described in Patent Document 1, the three-dimensional gather to be raised toward the body side may fall to the inner side of the absorbent article due to the movement of the wearer's body, or in an appropriate position. As a result, there is a problem that the function of the three-dimensional gathering is not sufficiently exhibited and a side leakage occurs. There is not yet provided a technology that can improve the followability of the three-dimensional gather to the body and effectively prevent the occurrence of inconveniences related to the three-dimensional gather such as falling down.

従って、本発明の目的は、立体ギャザーを有する吸収性物品において、立体ギャザーの身体に対する追従性に優れ、立体ギャザーの倒れ込みやズレ、ヨレを生じ難く、横漏れ防止性が高い吸収性物品を提供することにある。 Accordingly, an object of the present invention is to provide an absorbent article having a three-dimensional gather, which is excellent in followability of the three-dimensional gather to the body, is less likely to fall down, shift and twist, and has high side leakage prevention properties. There is to do.

本発明者らは、本体に設けられた立体ギャザーの身体に対する追従性を高め、立体ギャザーの倒れ込み等を防止すべく種々検討した結果、本体を着用者の下着に固定する固定部の配置箇所と立体ギャザーの追従性との間に、密接な関係があることを知見した。 As a result of various studies to improve the followability of the three-dimensional gather provided in the main body to the body and prevent the three-dimensional gather from collapsing, the present inventors have arranged a fixing portion for fixing the main body to the wearer's underwear, and It was found that there is a close relationship with the follow-up performance of three-dimensional gathers.

本発明は、前記知見に基づきなされたもので、液保持性の吸収体を有する縦長の本体、及び該本体を着用者の下着に固定する固定部を備え、該本体の長手方向に沿う左右両側部に一対の立体ギャザーが設けられており、該下着の内面上に配されて使用される吸収性物品であって、前記立体ギャザーは、前記本体の肌当接面側に該本体の長手方向に沿って起立する基壁部と、該基壁部の上端部に連接され、着用時に着用者の肌に当接する面状の弾性伸縮部とを含んで構成されており、前記立体ギャザーの長手方向前後両端部に、前記弾性伸縮部が前記本体に接合されている接合領域を有し、これら前後両端部に挟まれた該立体ギャザーの長手方向内方部に、該弾性伸縮部が該本体に接合されていない非接合領域を有し、前記接合領域と前記非接合領域との境界よりも前記本体の長手方向外方で且つ該非接合領域における前記弾性伸縮部の長手方向に沿う内側縁よりも該本体の幅方向外方に位置する、該本体の４つの隅部それぞれの非肌当接面側に、前記固定部として、前記下着の内面に固定されて使用される隅部固定部が配されている吸収性物品を提供することにより、前記目的を達成したものである。 The present invention has been made based on the above knowledge, and includes a vertically long main body having a liquid-retaining absorbent body, and a fixing portion that fixes the main body to a wearer's underwear, and both left and right sides along the longitudinal direction of the main body A pair of three-dimensional gathers are provided in the part, and the absorbent article is used by being arranged on the inner surface of the underwear, wherein the three-dimensional gathers are arranged on the skin contact surface side of the main body in the longitudinal direction of the main body A base wall portion that stands up along the upper end of the base wall portion, and a planar elastic stretchable portion that abuts against the wearer's skin when worn, The elastic expansion / contraction part has a joining area where the elastic expansion / contraction part is bonded to the main body at both front and rear ends, and the elastic expansion / contraction part is connected to the main body at the inner side in the longitudinal direction of the three-dimensional gather. A non-bonding region that is not bonded to the bonding region. Four corners of the main body that are located on the outer side in the longitudinal direction of the main body with respect to the boundary with the region and on the outer side in the width direction of the main body with respect to the inner edge along the longitudinal direction of the elastic stretchable portion in the non-joining region Achieving the above-mentioned object by providing an absorbent article in which each non-skin contact surface side is provided with a corner fixing portion used as the fixing portion, which is fixed to the inner surface of the undergarment. It is.

本発明の吸収性物品は、就寝時や運動時のように着用者の身体の動きが激しい場合でも、立体ギャザーが身体に追従し、立体ギャザーの倒れ込みやズレ、ヨレが抑制され、横漏れを生じ難い。 The absorbent article of the present invention has a three-dimensional gather that follows the body even when the wearer's body moves vigorously, such as when sleeping or exercising, and the falling, slipping and twisting of the three-dimensional gather are suppressed, and side leakage is prevented. Not likely to occur.

以下、本発明の吸収性物品を、その好ましい実施形態に基づき図面を参照して説明する。図１〜図３には、本発明の吸収性物品の第１実施形態としての生理用ナプキンが示されている。 Hereinafter, the absorptive article of the present invention is explained based on the desirable embodiment with reference to drawings. The sanitary napkin as 1st Embodiment of the absorbent article of this invention is shown by FIGS. 1-3.

第１実施形態のナプキン１は、着用時に着用者の肌に当接する表面層としての液透過性の表面シート２、防漏層としての液不透過性又は撥水性の裏面シート３、及びこれら両シート２，３間に介在された吸収層としての液保持性の吸収体４を有する縦長の本体５を備え、実質的に縦長の形状を有している。ナプキン１は、下着（図示せず）の内面上に配されて使用される。 The napkin 1 of the first embodiment includes a liquid-permeable surface sheet 2 as a surface layer that comes into contact with the wearer's skin when worn, a liquid-impermeable or water-repellent back sheet 3 as a leak-proof layer, and both A vertically long main body 5 having a liquid retaining absorbent body 4 as an absorbent layer interposed between the sheets 2 and 3 is provided, and has a substantially vertically long shape. The napkin 1 is used by being disposed on the inner surface of an undergarment (not shown).

本体５は、着用時に着用者の排泄部位に対向配置される排泄部対向部Ａと、該排泄部対向部Ａよりも着用者の背側（後方）に配される後方部Ｂと、該排泄部対向部Ａよりも着用者の腹側（前方）に配される前方部Ｃとを、長手方向に有している。後方部Ｂは、本体５の長手方向後端５Ｂを有しており、前方部Ｃは、本体５の長手方向前端５Ｃを有している。第１実施形態における排泄部対向部Ａと後方部Ｂとの境界は、本体５の長手方向の略中央部に存する。前方部Ｃと排泄部対向部Ａとの境界は、本体５の長手方向前端５Ｃから本体５の長手方向の全長の略２０％に相当する距離離間した位置に存する。 The main body 5 includes an excretory part facing part A disposed opposite to the excretion part of the wearer when worn, a rear part B disposed on the back side (rear) of the wearer with respect to the excretion part facing part A, and the excretion It has the front part C distribute | arranged to a wearer's belly side (front) rather than the part opposing part A in a longitudinal direction. The rear part B has a longitudinal rear end 5 </ b> B of the main body 5, and the front part C has a longitudinal front end 5 </ b> C of the main body 5. The boundary between the excretory part facing part A and the rear part B in the first embodiment exists in the substantially central part of the main body 5 in the longitudinal direction. The boundary between the front part C and the excretory part facing part A exists at a position spaced from the front end 5C in the longitudinal direction of the main body 5 by a distance corresponding to approximately 20% of the total length in the longitudinal direction of the main body 5.

本体５は、その長手方向に沿う左右両側に、吸収体４の長手方向に沿う左右両側縁から該吸収体４の幅方向外方に延出した裏面シート３を含んで構成されるフラップ部を有している。フラップ部の肌当接面側は、不織布からなるシート（図示せず）により被覆されている。フラップ部は、後方部Ｂの所定箇所（後方部Ｂにおける本体５の長手方向後端５Ｂ寄りの部位）において、吸収体４の幅方向外方に向かって大きく膨らんでおり、これにより本体５の長手方向に沿う左右両側に、吸収体４の後方部Ｂにおける左右両側縁それぞれから幅方向外方に延出する一対の後部フラップ６，６が形成されている。また、フラップ部は、前方部Ｃにおいて吸収体４の幅方向外方に向かって大きく膨らんでおり、これにより本体５の長手方向に沿う左右両側に、吸収体４の前方部Ｃにおける長手方向に沿う左右両側縁それぞれから幅方向外方に延出する一対の前部フラップ７，７が形成されている。また、フラップ部は、排泄部対向部Ａにおいて吸収体４の幅方向外方に向かって大きく膨らんでおり、これにより本体５の長手方向に沿う左右両側に、吸収体４の排泄部対向部Ａにおける長手方向に沿う左右両側縁それぞれから幅方向外方に延出する一対のウイング部８，８が形成されている。第１実施形態においては、後部フラップ６、前部フラップ７、及びウイング部８それぞれの吸収体４の長手方向に沿う側縁からの延出幅が略同じとなっている。
ナプキン１の着用時においては、後部フラップ６及び前部フラップ７は、何れもその非肌当接面側が下着の内面（肌当接面側）と対向するように配置されて使用され、ウイング部８は、その非肌当接面側が下着の外面（非肌当接面側）と対向するように配置されて使用される。即ち、後部フラップ６及び前部フラップ７は折り曲げられずに使用され、ウイング部８は、下着のクロッチ部の外面側に折り返されて使用される。 The main body 5 has flap portions configured to include back sheets 3 that extend outward in the width direction of the absorber 4 from left and right side edges along the longitudinal direction of the absorber 4 on both left and right sides along the longitudinal direction. Have. The skin contact surface side of the flap portion is covered with a sheet (not shown) made of a nonwoven fabric. The flap portion swells greatly outward in the width direction of the absorbent body 4 at a predetermined portion of the rear portion B (a portion of the rear portion B near the rear end 5B in the longitudinal direction of the main body 5). A pair of rear flaps 6, 6 extending outward in the width direction from the left and right side edges of the rear part B of the absorber 4 are formed on the left and right sides along the longitudinal direction. In addition, the flap portion is greatly expanded outward in the width direction of the absorbent body 4 at the front portion C, and thereby, on the left and right sides along the longitudinal direction of the main body 5, in the longitudinal direction of the front portion C of the absorbent body 4. A pair of front flaps 7 and 7 extending outward in the width direction from the left and right side edges are formed. Moreover, the flap part is greatly bulging outward in the width direction of the absorbent body 4 in the excretory part facing part A, and thereby the excretory part facing part A of the absorbent body 4 on both the left and right sides along the longitudinal direction of the main body 5. A pair of wings 8, 8 extending outward in the width direction from the left and right side edges along the longitudinal direction is formed. In 1st Embodiment, the extension width from the side edge along the longitudinal direction of the absorber 4 of each of the rear flap 6, the front flap 7, and the wing part 8 is substantially the same.
When the napkin 1 is worn, the rear flap 6 and the front flap 7 are both arranged and used such that the non-skin contact surface side faces the inner surface (skin contact surface side) of the underwear. No. 8 is arranged and used such that the non-skin contact surface side faces the outer surface of the underwear (non-skin contact surface side). That is, the rear flap 6 and the front flap 7 are used without being bent, and the wing portion 8 is folded and used on the outer surface side of the crotch portion of the underwear.

表面シート２は、図２及び図３に示すように、吸収体４の上面（肌当接面側）の全域を被覆し、且つ吸収体４の長手方向両側縁を覆って裏面シート３側へ巻き込まれている。裏面シート３は、上述したように、吸収体４の下面（非肌当接面側）を被覆し、更に所定箇所において吸収体４の長手方向両側縁から幅方向外方に延出して、後部フラップ６、前部フラップ７及びウイング部８を形成している。表面シート２及び裏面シート３は、吸収体４の前後端から長手方向に延出し、その延出部分において互いにヒートシール等により接合されてエンドシール部９，９を形成している。表面シート２の肌当接面側には、表面シート２と吸収体４とが一体的に圧密化されて形成された防漏溝２０が形成されている。防漏溝２０は、例えばヒートエンボス加工により形成することができる。
尚、本明細書において、「肌当接面側」は、ナプキン着用時に着用者の肌側に向けられる面であり、「非肌当接面側」は、ナプキン着用時に下着側（着用者の肌側とは反対側）に向けられる面である。また、「長手方向」は、ナプキン又は各種部材の長手方向に沿う方向であり、「幅方向」は、長手方向と直交する方向である。 As shown in FIGS. 2 and 3, the top sheet 2 covers the entire upper surface (skin contact surface side) of the absorber 4 and covers both side edges in the longitudinal direction of the absorber 4 toward the back sheet 3 side. It is involved. As described above, the back sheet 3 covers the lower surface (non-skin contact surface side) of the absorbent body 4 and further extends outward in the width direction from both side edges in the longitudinal direction of the absorbent body 4 at a predetermined location. A flap 6, a front flap 7 and a wing 8 are formed. The top sheet 2 and the back sheet 3 extend in the longitudinal direction from the front and rear ends of the absorber 4, and are joined to each other by heat sealing or the like at the extended portions to form end seal portions 9 and 9. On the skin contact surface side of the top sheet 2, a leak-proof groove 20 formed by integrally compacting the top sheet 2 and the absorber 4 is formed. The leak-proof groove 20 can be formed by, for example, heat embossing.
In the present specification, the “skin contact surface side” is a surface directed toward the wearer's skin side when wearing a napkin, and the “non-skin contact surface side” is the underwear side (wearer's side) The surface is directed to the side opposite to the skin side. The “longitudinal direction” is a direction along the longitudinal direction of the napkin or various members, and the “width direction” is a direction orthogonal to the longitudinal direction.

本体５の長手方向に沿う左右両側部には、該長手方向に沿って一対の立体ギャザー１０，１０が設けられている。各立体ギャザー１０は、図１に示すように、本体５の長手方向の全長に亘って設けられている。
立体ギャザー１０は、図２に示すように、本体５の肌当接面側に該本体５の長手方向に沿って起立する基壁部１１と、該基壁部１１の上端部１１ａに連接され、着用時に着用者の肌に当接する弾性伸縮部１２とを含んで構成されている。弾性伸縮部１２は、上端部１１ａの長手方向の全長に亘って連接されている。弾性伸縮部１２には、本体５の長手方向に沿って側部弾性部材１３が配されて弾性伸縮性が付与されている。立体ギャザー１０（弾性伸縮部１２）の伸縮方向は本体５の長手方向に一致している。側部弾性部材１３は、少なくとも排泄部対向部Ａに配されており、更に前方部Ｃ及び／又は後方部Ｂ側にも延びて配されていることが好ましい。 A pair of three-dimensional gathers 10 and 10 are provided along the longitudinal direction on both left and right side portions along the longitudinal direction of the main body 5. As shown in FIG. 1, each three-dimensional gather 10 is provided over the entire length of the main body 5 in the longitudinal direction.
As shown in FIG. 2, the three-dimensional gather 10 is connected to the skin contact surface side of the main body 5 along the base wall portion 11 standing along the longitudinal direction of the main body 5 and the upper end portion 11 a of the base wall portion 11. The elastic stretchable part 12 is configured to contact the wearer's skin when worn. The elastic expansion / contraction part 12 is connected over the full length of the longitudinal direction of the upper end part 11a. A side elastic member 13 is disposed along the longitudinal direction of the main body 5 to the elastic stretchable portion 12 to impart elastic stretchability. The expansion / contraction direction of the three-dimensional gather 10 (elastic expansion / contraction part 12) coincides with the longitudinal direction of the main body 5. It is preferable that the side elastic member 13 is arranged at least in the excretory part facing part A and further extends to the front part C and / or the rear part B side.

ナプキン１は、立体ギャザー１０の長手方向前後両端部に、図３に示す如く弾性伸縮部１２が本体５に接合されている接合領域Ｐを有し、これら前後両端部に挟まれた立体ギャザー１０の長手方向内方部に、図２示す如く弾性伸縮部１２が本体５に接合されていない非接合領域Ｑを有している。接合領域Ｐと非接合領域Ｑとの境界は、本体５の長手方向前端５Ｃ又は後端５Ｂから本体５の長手方向の全長の４０〜７０％に相当する距離離間した位置に存することが好ましい。 The napkin 1 has joining regions P in which elastic elastic parts 12 are joined to the main body 5 as shown in FIG. 3 at both longitudinal front and rear ends of the solid gather 10, and the solid gather 10 sandwiched between the front and rear ends. 2 has a non-joined region Q in which the elastic stretchable part 12 is not joined to the main body 5 as shown in FIG. The boundary between the joining region P and the non-joining region Q is preferably located at a position separated from the longitudinal front end 5C or the rear end 5B of the main body 5 by a distance corresponding to 40 to 70% of the total length of the main body 5 in the longitudinal direction.

第１実施形態の立体ギャザー１０は、図１に示すように、前方部Ｃにおける本体５の長手方向前端５Ｃ寄りの領域、及び後方部Ｂにおける本体５の長手方向後端５Ｂ寄りの領域に位置する部位が接合領域Ｐとされ、これら２つの領域に挟まれた、排泄部対向部Ａ及び後方部Ｂを含む部位が非接合領域Ｑとされている。立体ギャザー１０は、接合領域Ｐにおいては、弾性伸縮部１２が本体５に接合されていることで基壁部１１の起立が阻害されているため起立しておらず、非接合領域Ｑにおいては、側部弾性部材１３による収縮力によって起立している。また、弾性伸縮部１２の収縮によって、本体５は、その長手方向の全体形状が、肌当接面側（表面シート２側）に凹状に湾曲している。 As shown in FIG. 1, the three-dimensional gather 10 of the first embodiment is located in a region near the front end 5C in the longitudinal direction of the main body 5 in the front portion C and a region near the rear end 5B in the longitudinal direction of the main body 5 in the rear portion B. A part to be performed is a joining area P, and a part including the excretory part facing part A and the rear part B sandwiched between these two areas is a non-joining area Q. The three-dimensional gather 10 does not stand up in the joining region P because the standing of the base wall portion 11 is inhibited by joining the elastic stretchable part 12 to the main body 5, and in the non-joining region Q, The side elastic member 13 stands up due to the contraction force. In addition, due to the contraction of the elastic stretchable part 12, the main body 5 has its entire shape in the longitudinal direction curved in a concave shape on the skin contact surface side (surface sheet 2 side).

上述した後部フラップ６、前部フラップ７、及びウイング部８それぞれは、これらの機能を充分に発揮させる観点から、図１に示すように、非接合領域Ｑにおける弾性伸縮部１２の長手方向に沿う外側縁１２ａよりも本体５の幅方向外方に延出していることが好ましい。
後部フラップ６の外側縁１２ａからの延出幅は、好ましくは１０〜５０ｍｍである。前部フラップ７の外側縁１２ａからの延出幅は、好ましくは１０〜５０ｍｍである。ウイング部８の外側縁１２ａからの延出幅は、好ましくは１０〜５０ｍｍである。
第１実施形態においては、後部フラップ６の前記外側縁１２ａからの延出幅と、前部フラップ７の前記外側縁１２ａからの延出幅とが、略同一（両者の前記外側縁１２ａからの最大延出幅の差が２０ｍｍ以内）であることが好ましい。 Each of the above-described rear flap 6, front flap 7, and wing portion 8 is along the longitudinal direction of the elastic stretchable portion 12 in the non-joining region Q, as shown in FIG. It is preferable to extend outward in the width direction of the main body 5 from the outer edge 12a.
The extending width from the outer edge 12a of the rear flap 6 is preferably 10 to 50 mm. The extending width from the outer edge 12a of the front flap 7 is preferably 10 to 50 mm. The extending width from the outer edge 12a of the wing part 8 is preferably 10 to 50 mm.
In the first embodiment, the extension width of the rear flap 6 from the outer edge 12a and the extension width of the front flap 7 from the outer edge 12a are substantially the same (both from the outer edge 12a). The difference in maximum extension width is preferably within 20 mm.

立体ギャザー１０について更に説明すると、立体ギャザー１０は、立体ギャザー形成用シート１４を主体として構成されている。立体ギャザー形成用シート１４は、長手方向に亘って一定の幅を有するシートで、基壁部１１及びその上端部１１ａに弾性伸縮部１２が連設された形状を有するように折り返されている。従って、立体ギャザー形成用シート１４を折り返して形成された立体ギャザー１０は、図２に示すように、基壁部１１及び弾性伸縮部１２において２層構造となっている。基壁部１１の下端部１１ｂは、吸収体４の非肌当接面側に巻き込まれている。吸収体４の非肌当接面側に巻き込まれた下端部１１ｂは、吸収体４の非肌当接面側に巻き込まれた表面シート２の非肌当接面側と、裏面シート３の肌当接面側との間に、接着剤等の公知の接合手段により固定されている。 The solid gather 10 will be further described. The solid gather 10 is mainly composed of a solid gather forming sheet 14. The three-dimensional gather forming sheet 14 is a sheet having a constant width in the longitudinal direction, and is folded back so as to have a shape in which the elastic stretchable part 12 is continuously provided on the base wall part 11 and its upper end part 11a. Therefore, the three-dimensional gather 10 formed by folding the three-dimensional gather forming sheet 14 has a two-layer structure in the base wall portion 11 and the elastic stretchable portion 12 as shown in FIG. A lower end portion 11 b of the base wall portion 11 is wound around the non-skin contact surface side of the absorber 4. The lower end portion 11b wound around the non-skin contact surface side of the absorbent body 4 includes the non-skin contact surface side of the top sheet 2 wound around the non-skin contact surface side of the absorbent body 4 and the skin of the back sheet 3. Between the contact surface side, it is fixed by a known joining means such as an adhesive.

第１実施形態においては、弾性伸縮部１２は、図２に示すように、基壁部１１の上端部１１ａから水平方向に張り出しており、これにより、面状（ナプキン１の平面視において面状）に形成されている。即ち、弾性伸縮部１２は、基壁部１１の上端部１１ａから本体５の幅方向内方に略水平に張り出す内方弾性伸縮部１２Ａと、基壁部１１の上端部１１ａから本体５の幅方向外方に略水平に張り出す外方弾性伸縮部１２Ｂとから構成されており、少なくとも排泄部対向部Ａにおいて着用者の肌に面状に当接するようになっている。内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂそれぞれには、側部弾性部材１３が１本以上配されて弾性伸縮性が付与されている。側部弾性部材１３は、それぞれ内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂを構成する２層の立体ギャザー形成用シート１４，１４の間に伸長状態で配されており、接着剤等の公知の手段によってこれら２層の立体ギャザー形成用シート１４，１４と接合されている。
このように、第１実施形態においては、内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂは、両者が一体となって平面状に形成され、弾性伸縮部１２と基壁部１１とは、図２に示す如き立体ギャザー１０の幅方向（本体５の幅方向）の断面視において、Ｔ字状を形成している。 In the first embodiment, as shown in FIG. 2, the elastic stretchable portion 12 projects horizontally from the upper end portion 11 a of the base wall portion 11, and thereby has a planar shape (planar shape in a plan view of the napkin 1). ). That is, the elastic expansion / contraction part 12 includes an inward elastic expansion / contraction part 12A projecting substantially horizontally from the upper end part 11a of the base wall part 11 in the width direction of the main body 5 and the upper end part 11a of the base wall part 11 from the upper end part 11a. It is comprised from the outward elastic expansion-contraction part 12B which protrudes in the width direction outward substantially horizontal, and contacts the wearer's skin at least in the excretion part opposing part A at least. One or more side elastic members 13 are arranged on each of the inward elastic expansion / contraction part 12A and the outward elastic expansion / contraction part 12B to give elastic elasticity. The side elastic members 13 are arranged in an extended state between the two layers of three-dimensional gather forming sheets 14 and 14 constituting the inner elastic expansion / contraction part 12A and the outer elastic expansion / contraction part 12B, respectively. These two layers of three-dimensional gather forming sheets 14 and 14 are joined by a known means.
As described above, in the first embodiment, the inner elastic expansion / contraction part 12A and the outer elastic expansion / contraction part 12B are integrally formed in a planar shape, and the elastic expansion / contraction part 12 and the base wall part 11 are: In the cross-sectional view of the three-dimensional gather 10 as shown in FIG. 2 in the width direction (width direction of the main body 5), a T-shape is formed.

第１実施形態においては、内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂの張り出し幅は異なっている。内方弾性伸縮部１２Ａの張り出し幅と外方弾性伸縮部１２Ｂの張り出し幅との比（前者：後者）は、好ましくは１：５〜５：１であり、特に、弾性伸縮部１２の本体５の内方への張り出しによる液吸収面の面積縮小を防止し、該液吸収面を幅方向に広くできる点から、更に好ましくは１：１〜１：４である。
また、内方弾性伸縮部１２Ａの長手方向に沿った自由端から外方弾性伸縮部１２Ｂの長手方向に沿った自由端までの長さ、即ち、面状の弾性伸縮部１２の幅は、フィット性及び立体ギャザー１０を汚しにくくする点から、１０〜５０ｍｍが好ましい。 In the first embodiment, the projecting widths of the inner elastic stretchable portion 12A and the outer elastic stretchable portion 12B are different. The ratio of the overhanging width of the inward elastic expansion / contraction part 12A to the overhanging width of the outer elastic expansion / contraction part 12B (the former: the latter) is preferably 1: 5 to 5: 1, and in particular, the main body 5 of the elastic expansion / contraction part 12 It is more preferably 1: 1 to 1: 4 from the viewpoint that the area of the liquid absorption surface can be prevented from being reduced due to the inward extension of the liquid and the liquid absorption surface can be widened in the width direction.
Further, the length from the free end along the longitudinal direction of the inner elastic stretchable portion 12A to the free end along the longitudinal direction of the outer elastic stretchable portion 12B, that is, the width of the planar elastic stretchable portion 12 is fit. 10-50 mm is preferable from the point which makes a property and the solid gathers 10 difficult to get dirty.

接合領域Ｐにおいては、図３に示すように、弾性伸縮部１２の少なくとも幅方向内側（内方弾性伸縮部１２Ａ）が、折り重ねられた基壁部１１を介して、本体５を構成する表面シート２及びエンドシール部９に固定されることで形成されている。
前方接合領域Ｐの長手方向の長さ（弾性伸縮部１２の長手方向に沿った長さ）Ｌ１は、弾性伸縮部１２の長手方向の全長に対して、好ましくは１０〜６０％、更に好ましくは１０〜４０％である。
後方接合領域Ｐの長手方向の長さ（弾性伸縮部１２の長手方向に沿った長さ）Ｌ１は、弾性伸縮部１２の長手方向の全長に対して、好ましくは２０〜８０％、更に好ましくは３０〜７０％である。 In the joining region P, as shown in FIG. 3, at least the inner side in the width direction (inner elastic stretchable portion 12 </ b> A) of the elastic stretchable portion 12 is a surface constituting the main body 5 via the folded base wall portion 11. It is formed by being fixed to the seat 2 and the end seal portion 9.
The length L1 in the longitudinal direction of the front joining region P (the length along the longitudinal direction of the elastic stretchable portion 12) L1 is preferably 10 to 60%, more preferably the total length of the elastic stretchable portion 12 in the longitudinal direction. 10 to 40%.
The length L1 in the longitudinal direction of the rear joining region P (the length along the longitudinal direction of the elastic stretchable portion 12) L1 is preferably 20 to 80%, more preferably with respect to the total length in the longitudinal direction of the elastic stretchable portion 12. 30-70%.

第１実施形態のナプキン１は、本体５を着用者の下着に固定する固定部を備え、該固定部を介して下着の内面上に配されて使用される。この固定部としては、この種の生理用ナプキンにおいて、下着との固定手段に用いられているものを特に制限無く用いることができ、例えば、ホットメルト粘着剤、メカニカルファスナーのオス材等が挙げられる。第１実施形態においては、固定部として、ホットメルト粘着剤を塗布してなる粘着剤層を用いている。固定部の保護等を目的として、該固定部に、樹脂製フィルム、不織布、紙等からなる剥離シートが固着されていても良い。 The napkin 1 of the first embodiment includes a fixing portion that fixes the main body 5 to the wearer's underwear, and is used by being disposed on the inner surface of the underwear via the fixing portion. As this fixing part, in this type of sanitary napkin, those used for fixing means with underwear can be used without particular limitation, and examples thereof include a hot-melt adhesive, a male material of a mechanical fastener, and the like. . In 1st Embodiment, the adhesive layer formed by apply | coating a hot-melt adhesive is used as a fixing | fixed part. For the purpose of protecting the fixing part, a release sheet made of a resin film, non-woven fabric, paper or the like may be fixed to the fixing part.

本体５の４つの隅部５ＣＬ、５ＣＲ、５ＢＬ、５ＢＲそれぞれの非肌当接面側には、前記固定部として、下着の内面に固定されて使用される隅部固定部３０が配されている。ここで、本体５の隅部とは、弾性伸縮部１２の接合領域Ｐと非接合領域Ｑとの境界よりも本体５の長手方向外方で且つ非接合領域Ｑにおける弾性伸縮部１２の長手方向に沿う内側縁１２ｂよりも本体５の幅方向外方に位置する領域である。尚、本体５における「接合領域Ｐと非接合領域Ｑとの境界」の位置は上述した通りであり、また、「非接合領域Ｑにおける弾性伸縮部１２の長手方向に沿う内側縁１２ｂ」は、本体５の幅方向を二分する仮想線（図示せず）から本体５の幅方向の長さ（最大幅）の２０〜５０％に相当する距離離間した位置に存することが好ましい。
上述したように、本体５には一対の立体ギャザー１０，１０、即ち、一対の弾性伸縮部１２，１２が設けられており、且つ一の弾性伸縮部１２につき、接合領域Ｐと非接合領域Ｑとの境界が２つ存在するので、上述の如く定義される本体５の隅部は、該本体５に４箇所存在することになる。隅部５ＣＬは、本体５の長手方向前端５Ｃ側の左隅部であり、隅部５ＣＲは、本体５の長手方向前端５Ｃ側の右隅部であり、隅部５ＢＬは、本体５の長手方向後端５Ｂ側の左隅部であり、隅部５ＢＲは、本体５の長手方向後端５Ｂ側の右隅部である。
このように、立体ギャザー１０の形態に関連付けて定められる本体５の４つの隅部５ＣＬ、５ＣＲ、５ＢＬ、５ＢＲそれぞれに、隅部固定部３０が配されていることにより、立体ギャザー１０の身体に対する追従性が高まり、立体ギャザー１０の倒れ込みやズレ、ヨレを効果的に防止することができ、また万一、身体の過度な動きによって立体ギャザー１０の倒れ込みやズレ、ヨレ等が生じても、立体ギャザー１０を適切な状態に復帰させることができる。 On the non-skin contact surface side of each of the four corners 5CL, 5CR, 5BL, and 5BR of the main body 5, a corner fixing part 30 that is used by being fixed to the inner surface of the underwear is disposed as the fixing part. . Here, the corner of the main body 5 refers to the longitudinal direction of the elastic expansion / contraction part 12 in the non-bonding region Q outside the longitudinal direction of the main body 5 with respect to the boundary between the bonding region P and the non-bonding region Q of the elastic expansion / contraction part 12. Is a region located on the outer side in the width direction of the main body 5 with respect to the inner edge 12b. The position of the “boundary between the joining region P and the non-joining region Q” in the main body 5 is as described above, and the “inner edge 12b along the longitudinal direction of the elastic stretchable part 12 in the non-joining region Q” It is preferable to be located at a position separated from a virtual line (not shown) that bisects the width direction of the main body 5 by a distance corresponding to 20 to 50% of the length (maximum width) of the main body 5 in the width direction.
As described above, the main body 5 is provided with a pair of three-dimensional gathers 10, 10, that is, a pair of elastic expansion / contraction portions 12, 12. Therefore, there are four corners of the main body 5 defined as described above. The corner portion 5CL is a left corner portion on the longitudinal front end 5C side of the main body 5, the corner portion 5CR is a right corner portion on the longitudinal front end 5C side of the main body 5, and the corner portion 5BL is on the rear side in the longitudinal direction of the main body 5. This is the left corner on the end 5B side, and the corner 5BR is the right corner on the rear end 5B side in the longitudinal direction of the main body 5.
As described above, the corner fixing portions 30 are arranged at the four corner portions 5CL, 5CR, 5BL, and 5BR of the main body 5 that are defined in association with the form of the three-dimensional gather 10, and thus the body of the three-dimensional gather 10 is arranged. The follow-up performance is improved, and it is possible to effectively prevent the three-dimensional gather 10 from falling, slipping, and twisting. Even if the three-dimensional gather 10 falls, slipping, twisting, etc. due to excessive body movement, The gather 10 can be returned to an appropriate state.

各隅部（５ＣＬ又は５ＣＲ又は５ＢＬ又は５ＢＲ）における隅部固定部３０の面積占有率〔＝（隅部固定部の面積／当該隅部の面積）×１００〕は、ギャザー部の倒れ込みにくさの観点から、好ましくは３０〜９５％、更に好ましくは５０〜９０％である。尚、面積占有率の算出において、「隅部固定部の面積」は、当該隅部に複数の隅部固定部がある場合は、それらの面積の合計を意味する。 The area occupancy of the corner fixing portion 30 at each corner (5CL, 5CR, 5BL, or 5BR) [= (area of the corner fixing portion / area of the corner) × 100] is the degree of difficulty in falling down the gather portion. From the viewpoint, it is preferably 30 to 95%, more preferably 50 to 90%. In the calculation of the area occupancy rate, “the area of the corner fixing portion” means the sum of the areas when there are a plurality of corner fixing portions in the corner.

第１実施形態においては、図１に示すように、後部フラップ６及び前部フラップ７に、隅部固定部３０が存している。詳細には、各隅部固定部３０は、後部フラップ６又は前部フラップ７における、非接合領域Ｑに位置する弾性伸縮部１２の長手方向外側縁１２ａから本体５の幅方向外方への延出部位に存している。また、４つの隅部固定部３０は、本体５の幅方向を二分する仮想線（図示せず）を挟んで左右対称に配されている。
尚、第１実施形態では、一の隅部に一の隅部固定部３０を配しているが、一の隅部に複数の隅部固定部３０を配しても良い。また、隅部固定部３０の形状は、図１に示す如き矩形形状に制限されず、円形状、楕円、半円、あるいは湾曲した短冊形状等でも良い。 In the first embodiment, as shown in FIG. 1, corner fixing portions 30 exist in the rear flap 6 and the front flap 7. Specifically, each corner fixing portion 30 extends from the longitudinal outer edge 12a of the elastic expansion / contraction portion 12 located in the non-joining region Q to the outer side in the width direction of the main body 5 in the rear flap 6 or the front flap 7. Exists at the exit site. Further, the four corner fixing portions 30 are arranged symmetrically with respect to a virtual line (not shown) that bisects the width direction of the main body 5.
In the first embodiment, one corner fixing portion 30 is arranged at one corner, but a plurality of corner fixing portions 30 may be arranged at one corner. Further, the shape of the corner fixing portion 30 is not limited to a rectangular shape as shown in FIG. 1, and may be a circular shape, an ellipse, a semicircle, a curved strip shape, or the like.

第１実施形態のナプキン１について更に説明すると、ナプキン１は、前記固定部として、上述した隅部固定部３０に加えて、ウイング部固定部３５を備えている。ウイング部固定部３５は、図１に示すように、ウイング部８の非肌当接面側に配されており、矩形形状を有している。上述したように隅部固定部３０が下着の内面（肌当接面側）に固定されて使用されるのに対し、ウイング部固定部３５は、ウイング部８が下着のクロッチ部の外面側に折り返されることで、下着の外面（非肌当接面側）に固定されて使用される。 The napkin 1 according to the first embodiment will be further described. The napkin 1 includes a wing fixing part 35 in addition to the corner fixing part 30 described above as the fixing part. As shown in FIG. 1, the wing portion fixing portion 35 is disposed on the non-skin contact surface side of the wing portion 8 and has a rectangular shape. As described above, the corner fixing portion 30 is used while being fixed to the inner surface (skin contact surface side) of the undergarment, whereas the wing portion fixing portion 35 has the wing portion 8 on the outer surface side of the crotch portion of the underwear. By being folded, it is used by being fixed to the outer surface (non-skin contact surface side) of the undergarment.

また、吸収体４の幅方向中央部の肌当接面側には、実質的に縦長で、吸収体４より幅狭の補助吸収体４１が配されている。補助吸収体４１は、吸収体４と共に表面シート２と裏面シート３との間に介在されている。補助吸収体４１は、ナプキン着用者の排泄部位と対向するように排泄部対向部Ａ及び後方部Ｂに亘って配されている。補助吸収体４１は、防漏溝２０によって包囲されており、これにより、表面シート２と吸収体４とからなる閉鎖空間に封入されている。
補助吸収体４１が存在することで、その存在領域（ナプキン着用者の排泄部位と対向する領域）が中高構造を有するようになるため、該存在領域における身体形状に対するフィット性及び液吸収性が高まると共に、防漏溝２０の形成に起因する歪が低減され、皴が発生し難くなる。 In addition, an auxiliary absorbent body 41 that is substantially vertically long and narrower than the absorbent body 4 is disposed on the skin contact surface side in the center in the width direction of the absorbent body 4. The auxiliary absorber 41 is interposed between the top sheet 2 and the back sheet 3 together with the absorber 4. The auxiliary absorbent body 41 is arranged over the excretory part facing part A and the rear part B so as to face the excretion part of the napkin wearer. The auxiliary absorbent body 41 is surrounded by the leak-proof groove 20, and is thereby enclosed in a closed space composed of the topsheet 2 and the absorbent body 4.
Since the presence area (area facing the excretion site of the napkin wearer) has a medium-high structure due to the presence of the auxiliary absorbent body 41, the fit to the body shape and the liquid absorption in the existence area are enhanced. At the same time, the distortion due to the formation of the leak-proof groove 20 is reduced and wrinkles are less likely to occur.

本実施形態のナプキン１における表面シート２、裏面シート３及び吸収体４としては、生理用ナプキン等の吸収性物品において従来から用いられている各種材料を特に制限なく用いることができる。
表面シート２としては、例えば、親水化処理が施された各種不織布や開孔フィルム等の液透過性のシートを用いることができる。裏面シート３としては、例えば、熱可塑性樹脂のフィルム（ポリエチレンフィルム等）や、該フィルムと不織布とのラミネート等の液不透過性又は撥水性のシートを用いることができ、水蒸気透過性を有するものを用いることもできる。
吸収体４及び補助吸収体４１としては、生理用ナプキン等の吸収性物品における吸収体として従来から用いられている各種材料を特に制限なく用いることができ、例えば、パルプ繊維を堆積させて得られた積繊層、パルプ繊維を原料とする不織布からなるものを用いることができる。吸収体４は吸収性ポリマーを含有していても良い。また、吸収体４は、ティッシュペーパー等の紙や各種不織布等のシート材で被覆されていても良い。 As the top sheet 2, the back sheet 3 and the absorbent body 4 in the napkin 1 of the present embodiment, various materials conventionally used in absorbent articles such as sanitary napkins can be used without particular limitation.
As the surface sheet 2, for example, liquid permeable sheets such as various nonwoven fabrics and perforated films subjected to a hydrophilic treatment can be used. As the back sheet 3, for example, a liquid-impermeable or water-repellent sheet such as a thermoplastic resin film (polyethylene film or the like) or a laminate of the film and a nonwoven fabric can be used, and has water vapor permeability. Can also be used.
As the absorbent body 4 and the auxiliary absorbent body 41, various materials that are conventionally used as absorbent bodies in absorbent articles such as sanitary napkins can be used without particular limitation. For example, the absorbent body 4 and the auxiliary absorbent body 41 are obtained by depositing pulp fibers. A laminated fiber layer and a nonwoven fabric made from pulp fibers can be used. The absorber 4 may contain an absorbent polymer. Moreover, the absorber 4 may be coat | covered with sheet materials, such as paper, such as tissue paper, and various nonwoven fabrics.

弾性伸縮部１２に配される側部弾性部材１３としては、弾性を有しているものであれば、糸状の弾性部材に制限されず、帯状のものでもよい。
立体ギャザー形成用シート１４としては、生理用ナプキン等の吸収性物品における立体ギャザーを構成する材料として従来から用いられている材料を特に制限なく用いることができ、特に好ましくは疎水性不織布等の撥水性のシートが用いられる。
また、立体ギャザー１０は、第１実施形態においては基壁部１１と弾性伸縮部１２とが一体的に形成されているが、基壁部１１と弾性伸縮部１２とを別々に製造し、それらを接合して形成することもできる。 As long as it has elasticity, as the side part elastic member 13 distribute | arranged to the elastic expansion-contraction part 12, it is not restricted to a thread-like elastic member, A strip | belt shape may be sufficient.
As the three-dimensional gather forming sheet 14, a material conventionally used as a material constituting a three-dimensional gather in an absorbent article such as a sanitary napkin can be used without any particular limitation, and particularly preferably a repellent material such as a hydrophobic nonwoven fabric. An aqueous sheet is used.
Further, in the first embodiment, the three-dimensional gather 10 has the base wall portion 11 and the elastic stretchable portion 12 integrally formed. However, the base wall portion 11 and the elastic stretchable portion 12 are separately manufactured, and these Can also be formed.

第１実施形態のナプキン１は、前記固定部（隅部固定部３０、ウイング部固定部３５）を介して、下着の内面上に固定されて使用される。
第１実施形態のナプキン１によれば、本体５の４つの隅部５ＣＬ、５ＣＲ、５ＢＬ、５ＢＲそれぞれの非肌当接面側に、下着の内面に固定されて使用される隅部固定部３０が配されているため、立体ギャザー１０の身体に対する追従性に優れており、就寝時や運動時のように着用者の身体の動きが激しい場合でも、立体ギャザー１０が身体に密着し、立体ギャザー１０の倒れ込みやズレ、ヨレが効果的に抑制され、横漏れを生じ難い。また、第１実施形態のナプキン１によれば、隅部固定部３０の存在により、ナプキン１自体の着用時のズレを生じ難く、良好な着用感が得られる。 The napkin 1 of the first embodiment is used by being fixed on the inner surface of the undergarment via the fixing parts (the corner fixing part 30 and the wing part fixing part 35).
According to the napkin 1 of the first embodiment, the corner fixing portion 30 used by being fixed to the inner surface of the underwear on the non-skin contact surface side of each of the four corner portions 5CL, 5CR, 5BL, 5BR of the main body 5. Therefore, even if the wearer's body moves violently, such as when sleeping or exercising, the three-dimensional gather 10 is in close contact with the body, and the three-dimensional gather is provided. 10 falls, misalignment, and twist are effectively suppressed, and it is difficult to cause side leakage. Moreover, according to the napkin 1 of 1st Embodiment, the presence at the corner | angular part fixing part 30 does not produce the shift | offset | difference at the time of wearing of the napkin 1 itself, and a favorable wearing feeling is obtained.

以下、本発明の他の実施形態について図４〜図７を参照して説明する。後述する他の実施形態については、上述した第１実施形態のナプキン１と異なる構成部分を主として説明し、同様の構成部分は同一の符号を付して説明を省略する。特に説明しない構成部分は、第１実施形態のナプキン１についての説明が適宜適用される。 Hereinafter, other embodiments of the present invention will be described with reference to FIGS. Regarding other embodiments to be described later, components that are different from the napkin 1 of the first embodiment described above will be mainly described, and similar components will be denoted by the same reference numerals and description thereof will be omitted. The description about the napkin 1 of 1st Embodiment is applied suitably to the component which is not demonstrated especially.

図４には、第２実施形態のナプキン１の肌当接面側（表面シート２側）の平面図が示されている。第２実施形態においては、本体５の長手方向前後両端部の非肌当接面側に、前記固定部として、本体５の幅方向に延びる矩形形状の一対の長手方向端部固定部３１，３１が配されており、該長手方向端部固定部３１の本体幅方向両端部（長手方向端部固定部３１の長手方向両端部）が、上述した隅部固定部３０となっている。即ち、第２実施形態においては、上述した４つの隅部固定部３０に加えて更に、本体５の長手方向前端５Ｃ側に位置する２つの左右隅部５ＣＬ、５ＣＲそれぞれに配されている隅部固定部３０，３０の間、及び本体５の長手方向後端５Ｂ側に位置する２つの左右隅部５ＢＬ、５ＢＲそれぞれに配されている隅部固定部３０，３０の間それぞれにも、固定部が配されている。長手方向端部固定部３１は、下着の内面に固定されて使用される。 The top view by the side of skin contact surface (surface sheet 2 side) of the napkin 1 of 2nd Embodiment is shown by FIG. In the second embodiment, a pair of rectangular end portion fixing portions 31, 31 having a rectangular shape extending in the width direction of the main body 5 as the fixing portion on the non-skin contact surface side at both longitudinal front and rear end portions of the main body 5. Both end portions in the body width direction of the longitudinal end fixing portion 31 (both longitudinal end portions of the longitudinal end fixing portion 31) are the corner fixing portions 30 described above. That is, in the second embodiment, in addition to the four corner fixing portions 30 described above, the corner portions disposed on each of the two left and right corner portions 5CL and 5CR located on the longitudinal front end 5C side of the main body 5 are further provided. A fixing portion is also provided between the fixing portions 30 and 30 and between the corner fixing portions 30 and 30 disposed on the two left and right corner portions 5BL and 5BR positioned on the longitudinal rear end 5B side of the main body 5, respectively. Is arranged. The longitudinal direction end fixing portion 31 is used by being fixed to the inner surface of the undergarment.

長手方向端部固定部３１の、本体５の幅方向に沿った長さは、本体５の幅方向の長さ（最大幅の長さ）に対して、好ましくは４０〜９５％、更に好ましくは６０〜９０％である。長手方向端部固定部３１の、本体５の長手方向に沿った長さは、本体５の長手方向の長さに対して、好ましくは３５〜６０％、更に好ましくは４０〜５０％である。第２実施形態によっても、第１実施形態と同様の効果が奏される。 The length of the longitudinal end fixing portion 31 along the width direction of the main body 5 is preferably 40 to 95%, more preferably, with respect to the length in the width direction of the main body 5 (maximum width length). 60-90%. The length of the longitudinal direction end fixing portion 31 along the longitudinal direction of the main body 5 is preferably 35 to 60%, more preferably 40 to 50% with respect to the length of the main body 5 in the longitudinal direction. According to the second embodiment, the same effect as that of the first embodiment is obtained.

図５には、第３実施形態のナプキン１の肌当接面側（表面シート２側）の平面図が示されている。第３実施形態においては、上述した一対の長手方向端部固定部３１，３１に加えて、本体５の幅方向中央部の非肌当接面側に、前記固定部として、本体５の長手方向に延びる中央部固定部３２が配されており、前記隅部固定部３０が、該中央部固定部３２の幅方向外方に位置している。また、中央部固定部３２と一対の長手方向端部固定部３１，３１とが繋がっており、これにより、本体５の非肌当接面側の平面視において略Ｉ字状の固定部が形成されている。中央部固定部３２は、下着の内面に固定されて使用される。 FIG. 5 shows a plan view of the skin contact surface side (surface sheet 2 side) of the napkin 1 of the third embodiment. In 3rd Embodiment, in addition to a pair of longitudinal direction edge part fixing | fixed parts 31 and 31 mentioned above, the longitudinal direction of the main body 5 is used as the said fixing | fixed part in the non-skin contact surface side of the width direction center part of the main body 5. A central portion fixing portion 32 extending to the center portion is disposed, and the corner portion fixing portion 30 is located outward of the central portion fixing portion 32 in the width direction. Moreover, the center part fixing | fixed part 32 and a pair of longitudinal direction edge part fixing | fixed parts 31 and 31 are connected, and, thereby, the substantially I-shaped fixing | fixed part is formed in planar view by the side of the non-skin contact surface of the main body 5. Has been. The center fixing part 32 is used by being fixed to the inner surface of the undergarment.

中央部固定部３２の、本体５の幅方向に沿った長さは、本体５の幅方向の長さ（最大幅の長さ）に対して、好ましくは２０〜６０％、更に好ましくは３０〜４０％である。中央部固定部３２の、本体５の長手方向に沿った長さは、本体５の長手方向の長さに対して、好ましくは４０〜７０％、更に好ましくは５０〜６０％である。中央部固定部３２は、その長手方向中央を本体５の長手方向中央と一致させて配されることが好ましい。
中央部固定部３２は、弾性伸縮部１２の非接合領域Ｑにおいて一対の立体ギャザー１０，１０に挟まれる領域、特に、一対の弾性伸縮部１２，１２の長手方向に沿う内側縁１２ｂ，１２ｂによって挟まれる領域に配されることが好ましい。第３実施形態によっても、第１実施形態と同様の効果が奏される。 The length of the center fixing portion 32 along the width direction of the main body 5 is preferably 20 to 60%, more preferably 30 to the length of the main body 5 in the width direction (maximum width). 40%. The length of the center fixing portion 32 along the longitudinal direction of the main body 5 is preferably 40 to 70%, more preferably 50 to 60% with respect to the length of the main body 5 in the longitudinal direction. The center fixing part 32 is preferably arranged with its center in the longitudinal direction coinciding with the center in the longitudinal direction of the main body 5.
The central portion fixing portion 32 is a region sandwiched between the pair of three-dimensional gathers 10 and 10 in the non-joint region Q of the elastic stretchable portion 12, particularly the inner edges 12 b and 12 b along the longitudinal direction of the pair of elastic stretchable portions 12 and 12. It is preferable to be disposed in the sandwiched area. According to the third embodiment, the same effect as that of the first embodiment is achieved.

図６には、第４実施形態のナプキン１の肌当接面側（表面シート２側）の平面図、図７には、第５実施形態のナプキン１の肌当接面側（表面シート２側）の平面図がそれぞれ示されている。第４及び第５実施形態のナプキン１においては、前部フラップ７の、吸収体４の長手方向に沿う側縁からの延出幅（前記外側縁１２ａからの延出幅）が、後部フラップ６及びウイング部８それぞれの該延出幅よりも小さい。第４及び第５実施形態のナプキン１において、後部フラップ６の前記外側縁１２ａからの最大延出幅と、前部フラップ７の前記外側縁１２ａからの最大延出幅との差は、５〜３０ｍｍであることが好ましい。 6 is a plan view of the skin contact surface side (surface sheet 2 side) of the napkin 1 according to the fourth embodiment, and FIG. 7 is a skin contact surface side (surface sheet 2) of the napkin 1 according to the fifth embodiment. Side views are shown respectively. In the napkin 1 according to the fourth and fifth embodiments, the extension width of the front flap 7 from the side edge along the longitudinal direction of the absorber 4 (extension width from the outer edge 12a) is the rear flap 6. And each of the wing portions 8 is smaller than the extension width. In the napkin 1 of the fourth and fifth embodiments, the difference between the maximum extension width of the rear flap 6 from the outer edge 12a and the maximum extension width of the front flap 7 from the outer edge 12a is 5 to 5. It is preferable that it is 30 mm.

第４実施形態においては、図６に示すように、本体５の非肌当接面側に一対の長手方向端部固定部３１，３１及び中央部固定部３２が配されており、これらが繋がって、平面視において略Ｉ字状の固定部を形成している。また第４実施形態においては、隅部固定部３０は、各隅部（５ＣＬ又は５ＣＲ又は５ＢＬ又は５ＢＲ）において吸収体４の長手方向に沿う側縁よりも吸収体４の幅方向内方に位置しており、後部フラップ部６及び前部フラップ７には配されていない。第４実施形態によっても、第１実施形態と同様の効果が奏される。 In 4th Embodiment, as shown in FIG. 6, a pair of longitudinal direction edge part fixing | fixed parts 31 and 31 and the center part fixing | fixed part 32 are distribute | arranged to the non-skin contact surface side of the main body 5, and these are connected. Thus, a substantially I-shaped fixing portion is formed in plan view. Moreover, in 4th Embodiment, the corner | angular part fixing | fixed part 30 is located in the width direction inner side of the absorber 4 rather than the side edge along the longitudinal direction of the absorber 4 in each corner part (5CL or 5CR or 5BL or 5BR). The rear flap 6 and the front flap 7 are not arranged. According to the fourth embodiment, the same effect as that of the first embodiment is achieved.

第５実施形態は、図７に示すように、一対の後部フラップ部６，６それぞれの非肌当接面側に、一の矩形形状の隅部固定部３０が配されている点以外は、図６に示す第４実施形態と同じである。即ち、第５実施形態においては、本体５の長手方向後端５Ｂ側の左隅部５ＢＬ及び右隅部５ＢＲそれぞれの非肌当接面側に、２つの隅部固定部３０，３０が本体５の幅方向に所定間隔を置いて並列に配されており、これら２つの隅部固定部３０，３０のうちの本体５の幅方向内方寄りに位置する隅部固定部３０のみが、長手方向端部固定部３１の長手方向端部となっている。第５実施形態によっても、第１実施形態と同様の効果が奏される。 In the fifth embodiment, as shown in FIG. 7, except that one rectangular corner fixing part 30 is arranged on the non-skin contact surface side of each of the pair of rear flap parts 6, 6, This is the same as the fourth embodiment shown in FIG. That is, in the fifth embodiment, the two corner fixing portions 30 and 30 are provided on the non-skin contact surface side of each of the left corner portion 5BL and the right corner portion 5BR on the longitudinal rear end 5B side of the main body 5. Only the corner fixing portion 30 located inward in the width direction of the main body 5 of these two corner fixing portions 30, 30 is arranged in parallel in the width direction at a predetermined interval. This is the longitudinal end of the part fixing part 31. According to the fifth embodiment, the same effect as that of the first embodiment is obtained.

上述した第２〜第５実施形態のように、本体５の幅方向に延びる長手方向端部固定部３１が配されていると、立体ギャザー１０における接合領域Ｐ（伸縮機能を略喪失している領域）の下着に対するズレの防止に特に有効であるため、立体ギャザー１０の身体との追従性を向上する効果がより顕著となる。
一方、第１実施形態のように、接合領域Ｐよりも本体５の幅方向外方、特に、接合領域Ｐと非接合領域Ｑとの境界よりも本体５の長手方向外方に隅部固定部３０が形成されていると、立体ギャザー１０の倒れこみを防ぐ効果がより顕著となる。 When the longitudinal direction end fixing portion 31 extending in the width direction of the main body 5 is arranged as in the second to fifth embodiments described above, the joining region P (the expansion and contraction function in the three-dimensional gather 10 is substantially lost. Since it is particularly effective for preventing the shift of the region) to the underwear, the effect of improving the followability of the three-dimensional gather 10 with the body becomes more remarkable.
On the other hand, as in the first embodiment, the corner fixing portion is located on the outer side in the width direction of the main body 5 with respect to the joining region P, particularly on the outer side in the longitudinal direction of the main body 5 with respect to the boundary between the joining region P and the non-joining region Q. If 30 is formed, the effect which prevents the fall of the three-dimensional gather 10 will become more remarkable.

本発明の吸収性物品は、前記実施形態に制限されるものではなく、本発明の趣旨を逸脱しない範囲において種々変形可能である。
例えば、前記実施形態における立体ギャザー１０は、その幅方向（本体５の幅方向）の断面視においてＴ字状を形成していたが、図８に示すように、弾性伸縮部１２が、基壁部１１の上端部１１ａから本体５の幅方向外方に略水平に張り出す外方弾性伸縮部のみから構成されているものでも良い。図８に示す弾性伸縮部１２も、面状に形成されているという点では前記実施形態と同じであり、図８に示す立体ギャザー１０を有するナプキンによっても、前記実施形態と同様の効果が奏される。
また、図８に示す実施形態において、弾性伸縮部１２は、図８とは逆に、ナプキン１の幅方向内方に張り出していても良い。即ち、弾性伸縮部１２は、基壁部１１の上端部１１ａからナプキン１の幅方向内方に略水平に張り出す内方弾性伸縮部のみから構成されていても良い。 The absorbent article of the present invention is not limited to the above embodiment, and can be variously modified without departing from the spirit of the present invention.
For example, the three-dimensional gather 10 in the above embodiment has a T-shape in a cross-sectional view in the width direction (the width direction of the main body 5), but as shown in FIG. It may be composed only of an outward elastic expansion / contraction portion that projects substantially horizontally from the upper end portion 11a of the portion 11 outward in the width direction of the main body 5. The elastic stretchable part 12 shown in FIG. 8 is also the same as that in the above embodiment in that it is formed in a planar shape, and the napkin having the three-dimensional gather 10 shown in FIG. Is done.
In the embodiment shown in FIG. 8, the elastic stretchable part 12 may protrude inward in the width direction of the napkin 1, contrary to FIG. 8. That is, the elastic expansion / contraction part 12 may be comprised only from the inward elastic expansion / contraction part which protrudes from the upper end part 11a of the base wall part 11 in the width direction inner side of the napkin 1 substantially horizontally.

また、前記実施形態において、内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂは、上端部１１ａからそれぞれ水平に張り出していなくても良く、例えば、それぞれの先端が斜め上方に向けて張り出すことにより、弾性伸縮部１２と基壁部１１とが立体ギャザー１０の幅方向の断面視においてＹ字状を形成していても良く、また、内方弾性伸縮部１２Ａ及び外方弾性伸縮部１２Ｂの何れか一方のみが斜め上方に傾斜していても良い。
また、中央部固定部３２と長手方向端部固定部３１とは繋がっていなくても良い。
また、前記実施形態では、本発明の吸収性物品の適用例の一つとして生理用ナプキンを挙げたが、例えばパンティライナー（おりものシート）、失禁パッド、使い捨ておむつ等の吸収性物品にも適用できる。
前述した各構成は、適宜組み合わせることができる。 Moreover, in the said embodiment, 12A of inner elastic expansion-contraction parts and the outer elastic expansion / contraction part 12B do not need to protrude horizontally from the upper end part 11a, respectively, for example, each front-end | tip protrudes diagonally upward. Accordingly, the elastic stretchable portion 12 and the base wall portion 11 may form a Y shape in a cross-sectional view of the three-dimensional gather 10 in the width direction, and the inner elastic stretchable portion 12A and the outer elastic stretchable portion 12B Only one of them may be inclined obliquely upward.
Moreover, the center part fixing | fixed part 32 and the longitudinal direction edge part fixing | fixed part 31 do not need to be connected.
Moreover, in the said embodiment, although the sanitary napkin was mentioned as one of the application examples of the absorbent article of this invention, For example, it applies also to absorbent articles, such as a panty liner (orimono sheet), an incontinence pad, a disposable diaper. it can.
Each structure mentioned above can be combined suitably.

図１は、本発明の第１実施形態である生理用ナプキンの肌当接面側（表面シート側）を示す平面図である。FIG. 1 is a plan view showing the skin contact surface side (surface sheet side) of the sanitary napkin according to the first embodiment of the present invention. 図２は、図１に示すＩ−Ｉ線断面の模式図である。FIG. 2 is a schematic diagram of a cross section taken along line I-I shown in FIG. 図３は、図１に示すＩＩ−ＩＩ線断面の模式図である。FIG. 3 is a schematic view of a cross section taken along line II-II shown in FIG. 図４は、本発明の第２実施形態の図１相当図である。FIG. 4 is a view corresponding to FIG. 1 of the second embodiment of the present invention. 図５は、本発明の第３実施形態の図１相当図である。FIG. 5 is a view corresponding to FIG. 1 of the third embodiment of the present invention. 図６は、本発明の第４実施形態の図１相当図である。FIG. 6 is a view corresponding to FIG. 1 of the fourth embodiment of the present invention. 図７は、本発明の第５実施形態の図１相当図である。FIG. 7 is a view corresponding to FIG. 1 of the fifth embodiment of the present invention. 図８は、本発明の他の実施形態の図２相当図である。FIG. 8 is a view corresponding to FIG. 2 of another embodiment of the present invention.

Explanation of symbols

１生理用ナプキン（吸収性物品）
５本体
２表面シート
３裏面シート
４吸収体
６後部フラップ
７前部フラップ
８ウイング部
１０立体ギャザー
１１基壁部
１１ａ基壁部の上端部
１２弾性伸縮部
１２ａ弾性伸縮部の長手方向に沿う外側縁
１２ｂ弾性伸縮部の長手方向に沿う内側縁
１３側部弾性部材
１４立体ギャザー形成用シート
Ｐ弾性伸縮部の接合領域
Ｑ弾性伸縮部の非接合領域
３０隅部固定部
３１長手方向端部固定部
３２中央部固定部
３５ウイング部固定部３５
５ＣＬ、５ＣＲ、５ＢＬ、５ＢＲ隅部
Ａ排泄部対向部
Ｂ後方部
Ｃ前方部 1 Sanitary napkin (absorbent article)
DESCRIPTION OF SYMBOLS 5 Main body 2 Top sheet 3 Back sheet 4 Absorber 6 Rear flap 7 Front flap 8 Wing part 10 Solid gather 11 Base wall part 11a Upper end part of base wall part 12 Elastic elastic part 12a Outer edge along the longitudinal direction of an elastic elastic part 12b Inner edge along the longitudinal direction of the elastic stretchable part 13 Side elastic member 14 Three-dimensional gather forming sheet P Joined area of elastic stretchable part Q Non-joined area 30 of elastic stretchable part Corner fixed part 31 Longitudinal end fixed part 32 Center fixing part 35 Wing fixing part 35
5CL, 5CR, 5BL, 5BR Corner A Excretion part facing part B Rear part C Front part

Claims

A vertically long main body having a liquid-retaining absorbent body, and a fixing portion for fixing the main body to a wearer's underwear, and a pair of three-dimensional gathers are provided on both right and left sides along the longitudinal direction of the main body, A sanitary napkin used on the inner surface of the underwear,
The body is disposed on the ventral side of the excretory part facing part, the rear part disposed on the back side of the excretion part facing part, and the excretory part facing part disposed opposite to the excretion part of the wearer when worn. A front portion in the longitudinal direction,
A pair of wings extending outward in the width direction from the left and right side edges of the excretion part-facing part of the absorber on both the left and right sides along the longitudinal direction of the main body, and the left and right sides of the rear part of the absorber A pair of rear flaps extending outward in the width direction from each edge, and a pair of front flaps extending outward in the width direction from each of the left and right side edges of the front portion of the absorber are formed, On the non-skin contact surface side of the wing portion, as the fixing portion, a wing portion fixing portion that is used by being fixed to the outer surface of the underwear is disposed,
The three-dimensional gather is connected to the base wall portion standing along the longitudinal direction of the main body on the skin contact surface side of the main body, and the upper end portion of the base wall portion, and is a surface that contacts the wearer's skin when worn And is configured to include an elastic elastic part,
The elastic gathering portion is joined to the main body at both longitudinal front and rear ends of the three-dimensional gather, and the elastic inner portion of the three-dimensional gather is sandwiched between the two front and rear ends. The stretchable part has a non-joined region that is not joined to the main body,
Each of the wing portion, the rear flap, and the front flap extends outward in the width direction of the main body from the outer edge along the longitudinal direction of the elastic stretchable portion in the non-joining region,
It is located outside in the longitudinal direction of the main body from the boundary between the joining region and the non-joining region and outside in the width direction of the body from the inner edge along the longitudinal direction of the elastic stretchable part in the non-joining region. On the non-skin contact surface side of each of the four corners of the main body, as the fixing portion, a corner fixing portion that is used by being fixed to the inner surface of the underwear is disposed, and the corner fixing portion is Exists in the rear flap and the front flap,
A sanitary napkin in which at least a part of the corner fixing portion is located at a portion extending from the outer edge along the longitudinal direction of the elastic expansion and contraction portion located in the non-joining region to the outside in the width direction of the main body. .

A central portion fixing portion extending in the longitudinal direction of the main body is disposed as the fixing portion on the non-skin contact surface side of the width direction central portion of the main body, and the corner fixing portion is the central portion fixing portion. The sanitary napkin according to claim 1, wherein the sanitary napkin is located outward in the width direction.

A pair of longitudinal end fixing portions extending in the width direction of the main body is arranged as the fixing portion on the non-skin contact surface side of both longitudinal front and rear ends of the main body, and the longitudinal end fixing portion The sanitary napkin according to claim 1, wherein both end portions in the body width direction are the corner fixing portions.

The sanitary napkin according to claim 3, wherein the central portion fixing portion and the longitudinal end portion fixing portion are connected.