JP5064975B2

JP5064975B2 - Sanitary napkin

Info

Publication number: JP5064975B2
Application number: JP2007292695A
Authority: JP
Inventors: 一光古田; 進介長原
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2007-11-12
Filing date: 2007-11-12
Publication date: 2012-10-31
Anticipated expiration: 2027-11-12
Also published as: JP2009118877A

Description

本発明は、粘着部を介して下着等の着衣に固定して使用される吸収性物品に関する。 The present invention relates to an absorbent article used by being fixed to clothes such as underwear via an adhesive portion.

従来、就寝時などに長時間使用するのに適した生理用ナプキンとして、前方にウイング部が設けられ、後方に後部フラップ部が設けられたものが知られている（特許文献１〜３参照）。斯かる構成のナプキンは、ウイング部及び後部フラップ部それぞれの非肌当接面（着用者の肌側に向けられる面とは反対側の面）上に配された粘着部を介して、下着に固定されて使用される。 Conventionally, as a sanitary napkin suitable for use for a long time at bedtime or the like, a sanitary napkin provided with a wing portion at the front and a rear flap portion at the rear is known (see Patent Documents 1 to 3). . The napkin having such a configuration can be applied to the underwear via the adhesive portion disposed on the non-skin contact surface (the surface opposite to the surface facing the wearer's skin) of each of the wing portion and the rear flap portion. Used fixed.

特許文献１〜３に記載のナプキンは、後部フラップ部の下着に対する固定性に乏しく、使用中に後部フラップ部がめくれたりヨレたりし、液漏れを起こすという問題があった。後部フラップ部の固定性を高めるには、後部フラップ部固定用の粘着部を、該後部フラップ部の長手方向側縁にできる限り近づけることが有効であるが、特許文献１〜３には斯かる知見については何等記載されていない。 The napkins described in Patent Documents 1 to 3 have poor fixability to the underwear of the rear flap portion, and there is a problem that the rear flap portion is turned or twisted during use, causing liquid leakage. In order to improve the fixing property of the rear flap part, it is effective to bring the adhesive part for fixing the rear flap part as close as possible to the longitudinal side edge of the rear flap part. There is no information about the findings.

特許文献１及び２に記載のナプキンは、後部フラップ部の長手方向側縁が円弧状の曲線状側縁であるため、矩形状の粘着部を該曲線状側縁に近接させ難く、また、無理に該粘着部を該曲線状側縁に近づけようとすると、該粘着部が外周シール部上に重なってしまい、粘着部の転写不良等の不都合が生じるため、後部フラップ部の固定性を高めることが困難であった。 In the napkin described in Patent Documents 1 and 2, since the longitudinal side edge of the rear flap portion is an arcuate curved side edge, it is difficult to bring the rectangular adhesive portion close to the curved side edge. If the adhesive part is brought closer to the curvilinear side edge, the adhesive part overlaps with the outer peripheral seal part, resulting in inconvenience such as transfer failure of the adhesive part, thereby improving the fixability of the rear flap part. It was difficult.

特許文献３に記載のナプキンは、後部フラップ部の長手方向側縁が、ナプキン長手方向に延びる直線状側縁を含んでいるため、仮に、前記知見に基づいて、後部フラップ部固定用の矩形状の粘着部を、該後部フラップ部の長手方向側縁にできる限り近づけた場合には、後部フラップ部の固定性が向上すると思われる。
しかしながら、特許文献３に記載のナプキンは、特許文献３の図２及び図３に記載されているように、ウイング部が存する部位における幅方向の長さよりも、後部フラップ部の前記直線状側縁が存する部位における幅方向の長さの方が長いため、後部フラップ部固定用の粘着部を、該後部フラップ部の長手方向側縁に近接させた場合、前方に位置するウイング部固定用の粘着部と、後方に位置する後部フラップ部固定用の粘着部との間において、ナプキン幅方向における位置関係に大きなズレが生じてしまい、この結果、以下に説明するように、ナプキンの生産性の低下を招くおそれがある。 In the napkin described in Patent Document 3, since the longitudinal side edge of the rear flap portion includes a linear side edge extending in the longitudinal direction of the napkin, the rectangular shape for fixing the rear flap portion is based on the above knowledge. When the adhesive part is made as close as possible to the longitudinal side edge of the rear flap part, the fixability of the rear flap part seems to be improved.
However, the napkin described in Patent Document 3 is, as described in FIG. 2 and FIG. 3 of Patent Document 3, the linear side edge of the rear flap portion rather than the length in the width direction at the portion where the wing portion exists. When the adhesive part for fixing the rear flap part is brought close to the side edge in the longitudinal direction of the rear flap part, the adhesive for fixing the wing part located at the front side is longer. The gap in the napkin width direction is greatly displaced between the rear portion and the rear flap portion fixing adhesive portion located at the rear, resulting in a decrease in napkin productivity as described below. May be incurred.

即ち、ウイング部及び後部フラップ部それぞれに粘着部が配されているナプキンにおいては、ウイング部の粘着部と後部フラップ部の粘着部とがナプキン幅方向において同位置にあること、換言すれば、ウイング部の粘着部と後部フラップ部の粘着部とがナプキン長手方向に沿った同一直線上にあることが望ましい。その理由は、ウイング部の粘着部と後部フラップ部の粘着部とが幅方向において同位置にあるナプキンは、その製造時において、粘着部の塗工（転写）を一つの塗工設備を用いて一回で済ますことができ、生産性に優れるためである。これに対し、ウイング部の粘着部と後部フラップ部の粘着部とが幅方向において同位置になく、これら両粘着部の幅方向における位置関係に大きなズレがあるナプキンは、その製造時に両粘着部を設けるに際し、粘着部毎に塗工設備を用意し、複数の塗工工程を経る必要があるため、生産性に劣る。
着衣に対する固定性に優れ、後部フラップ部が安定して液漏れ効果を発揮でき、生産性にも優れた吸収性物品は未だ提供されていない。 That is, in the napkin in which the adhesive part is arranged in each of the wing part and the rear flap part, the adhesive part of the wing part and the adhesive part of the rear flap part are in the same position in the napkin width direction, in other words, the wing. It is desirable that the adhesive part of the part and the adhesive part of the rear flap part are on the same straight line along the napkin longitudinal direction. The reason is that the adhesive part of the wing part and the adhesive part of the rear flap part are in the same position in the width direction. This is because it can be done only once and is excellent in productivity. In contrast, a napkin in which the adhesive portion of the wing portion and the adhesive portion of the rear flap portion are not in the same position in the width direction and the positional relationship in the width direction of these both adhesive portions is greatly shifted is the Since it is necessary to prepare coating equipment for each adhesive part and go through a plurality of coating processes, the productivity is inferior.
An absorptive article excellent in fixability to clothes, capable of exhibiting a liquid leakage effect with a stable rear flap portion, and excellent in productivity has not yet been provided.

特開平８−３２２８７９号公報JP-A-8-322879 特開２００３−１０２４２号公報JP 2003-10242 A 特開２００５−７０７５号公報JP-A-2005-7075

従って本発明の目的は、着衣に対する固定性及び生産性に優れた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 that is excellent in fixation to clothes and productivity.

本発明は、縦長の本体、該本体の左右両側に延設された一対の前方ウイング部、及び該前方ウイング部より後方に位置する部分に一対の後部フラップ部を有し、該前方ウイング部の非肌当接面上に、該前方ウイング部を着衣に固定する前方粘着部が配され、該後部フラップ部の非肌当接面上に、該後部フラップ部を着衣に固定する後方粘着部が配されている吸収性物品であって、一対の前記前方ウイング部が存する部位において本体幅方向に沿った長さが最大の領域の該長さを最大幅Ｗ１、一対の前記後部フラップ部が存する部位において本体幅方向に沿った長さが最大の領域の該長さを最大幅Ｗ２とした場合、該最大幅Ｗ１と該最大幅Ｗ２とが実質的に同じであり、且つ該最大幅Ｗ２を有する領域の長手方向両側縁それぞれが、本体長手方向に直線状に延びる直線状側縁となっており、前記後方粘着部が該直線状側縁に沿って配されており、前記吸収性物品の本体長手方向の後端を通り且つ本体幅方向と平行な最後方仮想直線と、前記前方ウイング部の前記後部フラップ部寄りの付け根を通り且つ本体幅方向と平行な第１仮想直線との間の最短距離をＬ、該最後方仮想直線と前記直線状側縁の該前方ウイング部寄りの端との間の最短距離をＬ１とした場合、該最短距離Ｌに対する該最短距離Ｌ１の比Ｌ１／Ｌが０．２〜０．８であり、前記前方粘着部を本体幅方向に二分する仮想直線上に、前記後方粘着部が存す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 a vertically long main body, a pair of front wing portions extending on both left and right sides of the main body, and a pair of rear flap portions in a portion located behind the front wing portion, A front adhesive portion for fixing the front wing portion to the clothing is disposed on the non-skin contact surface, and a rear adhesive portion for fixing the rear flap portion to the clothing is provided on the non-skin contact surface of the rear flap portion. In the absorbent article that is disposed, the length of the region along the main body width direction at the portion where the pair of the front wing portions exists is the maximum width W1, and the pair of the rear flap portions exist. When the length of the region having the maximum length in the body width direction at the part is the maximum width W2, the maximum width W1 and the maximum width W2 are substantially the same, and the maximum width W2 is Each side edge in the longitudinal direction of the area The rear adhesive portion is disposed along the linear side edge, passes through the rear end of the absorbent article in the longitudinal direction of the main body and extends in the main body width direction. L is the shortest distance between the parallel rearmost virtual straight line and the first virtual straight line passing through the base of the front wing portion near the rear flap and parallel to the body width direction, and the rearmost virtual straight line and the straight line When the shortest distance between the edge of the side edge near the front wing is L1, the ratio L1 / L of the shortest distance L1 to the shortest distance L is 0.2 to 0.8, and the front The object is achieved by providing an absorbent article having the rear adhesive portion on an imaginary straight line that bisects the adhesive portion in the body width direction.

本発明の吸収性物品は、着衣に対する固定性に優れ、後部フラップ部が安定して液漏れ防止効果を発揮でき、生産性にも優れている。 The absorptive article of the present invention is excellent in the fixation to clothes, the back flap part can be stabilized, and can exhibit a liquid leak prevention effect, and is excellent in productivity.

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は、本発明の一実施形態としての生理用ナプキンの非肌当接面側を示す平面図、図２は、図１に示す生理用ナプキンの肌当接面側を示す平面図である。肌当接面は、吸収性物品着用時に着用者の肌側に向けられる面であり、非肌当接面は、吸収性物品着用時に下着側（着用者の肌側とは反対側）に向けられる面である。 Hereinafter, the absorptive article of the present invention is explained based on the desirable embodiment with reference to drawings. FIG. 1 is a plan view showing a non-skin contact surface side of a sanitary napkin as one embodiment of the present invention, and FIG. 2 is a plan view showing a skin contact surface side of the sanitary napkin shown in FIG. . The skin contact surface is a surface directed toward the wearer's skin when the absorbent article is worn, and the non-skin contact surface is directed toward the underwear side (opposite to the wearer's skin) when the absorbent article is worn. It is the surface to be.

本実施形態のナプキン１は、肌当接面を構成する表面シート２、非肌当接面を構成する裏面シート３及びこれら両シート２，３間に介在された液保持性の縦長の吸収体４を具備する、縦長の本体５を有し、実質的に縦長の形状を有している。表面シート２は、液透過性の中央シート２ａ及びその長手方向左右両側に一部を重ねた状態で接合された撥水性の側部シート２ｂ，２ｂからなる。
ナプキン１は、長手方向前端１ａから後端１ｃ（ナプキン１において最も長手方向後方に位置する端）に向かって順に、着用時に着用者の腹部寄りの位置に配される前方部Ａ、着用者の液排泄部に対向配置される排泄部対向部Ｂ、及び着用者の背中寄りの位置に配される後方部Ｃを有している。 A napkin 1 according to this embodiment includes a top sheet 2 that constitutes a skin contact surface, a back sheet 3 that constitutes a non-skin contact surface, and a liquid-retaining longitudinal absorbent body interposed between the two sheets 2 and 3. 4 has a vertically long body 5 and has a substantially vertically long shape. The top sheet 2 is composed of a liquid-permeable central sheet 2a and water-repellent side sheets 2b and 2b joined in a state of being partially overlapped on both the left and right sides in the longitudinal direction.
The napkin 1 is arranged in order from the front end 1a in the longitudinal direction toward the rear end 1c (the end located most rearward in the longitudinal direction in the napkin 1). It has the excretion part opposing part B arrange | positioned facing a liquid excretion part, and the rear part C distribute | arranged to the position near a wearer's back.

ナプキン１は、その幅方向の中央部分に縦長の本体５を有し、該本体５の長手方向左右両側に、吸収体４の長手方向左右両側縁から外方に延出した表面シート２及び裏面シート３により形成されたフラップ部を有している。ナプキン１の周縁部においては、吸収体４の周縁から外方に延出した表面シート２と裏面シート３とが、ヒートシールや接着剤を介して接合されており、外周シール部が形成されている。
前記フラップ部は、排泄部対向部Ｂにおいてナプキン１の幅方向の外方に向かって大きく張り出しており、これにより本体５の左右両側に、一対の前方ウイング部６，６が延設されている。また、前記フラップ部は、排泄部対向部Ｂより後方に位置する後方部Ｃにおいてもナプキン１の幅方向の外方に向かって大きく張り出しており、これにより本体５の左右両側に、一対の後部フラップ部７，７が延設されている。排泄部対向部Ｂと後方部Ｃとの境界は、前方ウイング部６の後部フラップ部７寄りの付け根を通り且つ本体幅方向と平行な第１仮想直線Ｘ１に存する。第１仮想直線Ｘ１は、ナプキン１の長手方向中央を本体幅方向に横断している。 The napkin 1 has a vertically long main body 5 at the center in the width direction, and a top sheet 2 and a back surface extending outwardly from both left and right edges of the absorbent body 4 on both left and right sides of the main body 5 in the longitudinal direction. A flap portion formed by the sheet 3 is provided. In the peripheral part of the napkin 1, the top sheet 2 and the back sheet 3 extending outward from the peripheral part of the absorbent body 4 are joined via heat seal or an adhesive, and the peripheral seal part is formed. Yes.
The flap portion projects greatly outward in the width direction of the napkin 1 at the excretory portion facing portion B, whereby a pair of front wing portions 6, 6 are extended on the left and right sides of the main body 5. . In addition, the flap portion also protrudes outward in the width direction of the napkin 1 also in the rear portion C located behind the excretory portion facing portion B, and thus a pair of rear portions is provided on both the left and right sides of the main body 5. Flaps 7 are extended. The boundary between the excretory part facing part B and the rear part C exists in a first imaginary straight line X1 that passes through the root near the rear flap part 7 of the front wing part 6 and is parallel to the main body width direction. The first imaginary straight line X1 crosses the center in the longitudinal direction of the napkin 1 in the main body width direction.

前方ウイング部６の非肌当接面上には、前方ウイング部６を下着等の着衣に固定する前方粘着部８が配され、後部フラップ部７の非肌当接面上には、後部フラップ部７を着衣に固定する後方粘着部９が配されている。前方粘着部８及び後方粘着部９は、何れも縦長の矩形形状を有しており、その長手方向を本体長手方向に一致させて配されている。
前方ウイング部６は、ナプキン１を着衣に固定する際に、裏面シート３側に折り返されて、前方粘着部８を介して着衣の非肌当接面に粘着固定される。後部フラップ部７は、ナプキン１を着衣に固定する際に、本体５側に折り返されず、その非肌当接面が広げられた状態（本体５の側方に延ばされた状態）で、後方粘着部９を介して着衣の肌当接面上に粘着固定される。
尚、本体長手方向は、本体５の長辺方向と平行な方向であり、本体幅方向は、該本体長手方向と直交する方向である。 On the non-skin contact surface of the front wing portion 6, a front adhesive portion 8 that fixes the front wing portion 6 to clothes such as underwear is disposed. On the non-skin contact surface of the rear flap portion 7, a rear flap is provided. A rear adhesive portion 9 for fixing the portion 7 to the clothes is arranged. The front adhesive portion 8 and the rear adhesive portion 9 both have a vertically long rectangular shape, and are arranged such that the longitudinal direction thereof coincides with the longitudinal direction of the main body.
When the napkin 1 is fixed to the clothing, the front wing portion 6 is folded back to the back sheet 3 side and is adhesively fixed to the non-skin contact surface of the clothing via the front adhesive portion 8. When the napkin 1 is fixed to the clothes, the rear flap portion 7 is not folded back to the main body 5 side, and the non-skin contact surface is widened (a state extended to the side of the main body 5). It is adhesively fixed on the skin contact surface of the clothing via the adhesive portion 9.
The main body longitudinal direction is a direction parallel to the long side direction of the main body 5, and the main body width direction is a direction orthogonal to the main body longitudinal direction.

本実施形態においては、一対の前方ウイング部６，６が存する部位（排泄部対向部Ｂ）において本体幅方向に沿った長さが最大の領域Ｂ１の該長さを最大幅Ｗ１、一対の後部フラップ部７，７が存する部位（後方部Ｃ）において本体幅方向に沿った長さが最大の領域Ｃ１の該長さを最大幅Ｗ２とした場合、最大幅Ｗ１と最大幅Ｗ２とが実質的に同じであり、且つ最大幅Ｗ２を有する領域Ｃ１の長手方向両側縁Ｃ１Ｌ，Ｃ１Ｌそれぞれが、本体長手方向に直線状に延びる直線状側縁Ｃ１Ｌとなっており、後方粘着部９が直線状側縁Ｃ１Ｌに沿って配されている。 In the present embodiment, the length of the region B1 having the longest length along the width direction of the main body in the region where the pair of front wing portions 6 and 6 exist (the excretory portion facing portion B) is the maximum width W1 and the pair of rear portions. When the length of the region C1 having the maximum length along the width direction of the main body in the portion where the flap portions 7 and 7 exist (the rear portion C) is the maximum width W2, the maximum width W1 and the maximum width W2 are substantially equal. And both the longitudinal side edges C1L and C1L of the region C1 having the maximum width W2 are linear side edges C1L extending linearly in the longitudinal direction of the main body, and the rear adhesive portion 9 is on the linear side It is arranged along the edge C1L.

このように、後部フラップ部７が前方ウイング部６と同じ最大延出幅を有し、且つ後部フラップ部７の最大延出幅を有する領域Ｃ１の長手方向側縁が、本体長手方向と平行な直線状になっていることにより、ナプキン１の着用時における後部フラップ部７のめくれやヨレの起点となりやすい、後部フラップ部７の後方端部に、大きな面積を有する後部粘着部９を配することが可能となるため、粘着部９による後部フラップ部７の着衣に対する固定性が高まり、後部フラップ部７による液漏れ防止効果を安定的に発揮させることができる。また、本実施形態に係る後部フラップ部７は、特許文献１及び２に記載の如き後部フラップ部、即ち、長手方向側縁が円弧状となっており直線状となっていない後部フラップ部に比して、着用者の臀部のカバー面積をより広くとることができるため、上述した粘着部９による下着に対する安定した固定性と相俟って、身体後方部からの液漏れ防止に優れた効果を発揮する。 Thus, the longitudinal side edge of the region C1 in which the rear flap portion 7 has the same maximum extension width as the front wing portion 6 and the maximum extension width of the rear flap portion 7 is parallel to the longitudinal direction of the main body. By arranging the rear adhesive portion 9 having a large area at the rear end portion of the rear flap portion 7 which is likely to be a starting point of turning and twisting of the rear flap portion 7 when the napkin 1 is worn due to being linear. Therefore, the fixation of the rear flap portion 7 to the clothes by the adhesive portion 9 is enhanced, and the liquid leakage preventing effect by the rear flap portion 7 can be stably exhibited. Further, the rear flap portion 7 according to the present embodiment is compared with the rear flap portion as described in Patent Documents 1 and 2, that is, compared with the rear flap portion that is not linear in the longitudinal direction side edge. And since the cover area of a wearer's buttocks can be taken more widely, combined with the stable fixing property to the underwear by the adhesive part 9 mentioned above, the effect excellent in preventing the liquid leakage from the back part of the body Demonstrate.

ここで、「最大幅Ｗ１と最大幅Ｗ２とが実質的に同じである」とは、最大幅Ｗ１と最大幅Ｗ２との差が１ｍｍ以内であることを意味する。
最大幅Ｗ１（領域Ｂ１の本体幅方向に沿った長さ）及び最大幅Ｗ２（領域Ｃ１の本体幅方向に沿った長さ）は、それぞれ、好ましくは１４０〜１８０ｍｍ、更に好ましくは１５０〜１７０ｍｍである。
また、最大幅Ｗ１は、領域Ｂ１における吸収体４の本体幅方向に沿った長さ（領域Ｂ１における吸収体４の最大幅）に対して、好ましくは１８０〜２５０％、更に好ましくは１９０〜２３０％である。領域Ｃ１における吸収体４の最大幅に対する最大幅Ｗ２の割合についても、これと同様であることが好ましい。 Here, “the maximum width W1 and the maximum width W2 are substantially the same” means that the difference between the maximum width W1 and the maximum width W2 is within 1 mm.
The maximum width W1 (the length along the body width direction of the region B1) and the maximum width W2 (the length along the body width direction of the region C1) are preferably 140 to 180 mm, more preferably 150 to 170 mm, respectively. is there.
The maximum width W1 is preferably 180 to 250%, more preferably 190 to 230, with respect to the length along the main body width direction of the absorber 4 in the region B1 (maximum width of the absorber 4 in the region B1). %. The ratio of the maximum width W2 to the maximum width of the absorber 4 in the region C1 is preferably the same as this.

一対の後部フラップ部７が有する一対の直線状側縁Ｃ１Ｌ，ＣＬ１は、ナプキン１を幅方向に二分する仮想直線（図示せず）を挟んで左右対称位置にあり、本体長手方向において同位置にある。後方粘着部９は、直線状側縁Ｃ１Ｌの前方ウイング部６寄りの端Ｃ１Ｌａと、ナプキン１の後端１ｃ寄りの端Ｃ１Ｌｂとの間に配されており、その本体長手方向に沿った長さが、直線状側縁Ｃ１Ｌの長さと等しくなっている。
また、一対の前方ウイング部６の本体長手方向に沿った側縁６Ｌは、その中央部が本体長手方向に直線状に延びる直線状側縁となっており、前方粘着部８が該直線状側縁に沿って配されている。 A pair of linear side edges C1L and CL1 included in the pair of rear flaps 7 are in symmetrical positions across a virtual straight line (not shown) that bisects the napkin 1 in the width direction, and are in the same position in the longitudinal direction of the main body. is there. The rear adhesive portion 9 is disposed between the end C1La near the front wing portion 6 of the linear side edge C1L and the end C1Lb near the rear end 1c of the napkin 1, and has a length along the longitudinal direction of the main body. Is equal to the length of the straight side edge C1L.
Further, the side edges 6L of the pair of front wing portions 6 along the longitudinal direction of the main body are linear side edges whose central portions extend linearly in the longitudinal direction of the main body, and the front adhesive portion 8 is on the linear side. It is arranged along the edge.

また、本実施形態においては、ナプキン１の本体長手方向の後端１ｃ（ナプキン１において最も長手方向後方に位置する端）を通り且つ本体幅方向と平行な最後方仮想直線Ｘと、前記第１仮想直線Ｘ１（前方ウイング部６の後部フラップ部７寄りの付け根を通り且つ本体幅方向と平行な仮想直線）との間の最短距離をＬ、該最後方仮想直線Ｘと直線状側縁Ｃ１Ｌの前方ウイング部６寄りの端Ｃ１Ｌａとの間の最短距離をＬ１とした場合、該最短距離Ｌに対する該最短距離Ｌ１の比Ｌ１／Ｌが０．２〜０．８、好ましくは０．５〜０．８である。Ｌ１／Ｌは、後部フラップ部７（後方部Ｃ）における直線状側縁Ｃ１Ｌの位置を示すものであり、Ｌ１／Ｌが小さいほど、直線状側縁Ｃ１Ｌがナプキン１の後端１ｃに近い位置にある。Ｌ１／Ｌが前記範囲にあることにより、後部フラップ部７の着衣に対する固定性が一層高まり、ナプキン着用中の後部フラップ部７のめくれやヨレを効果的に防止することができる。 In the present embodiment, the first virtual straight line X passing through the rear end 1c in the longitudinal direction of the main body of the napkin 1 (the end positioned at the rearmost in the longitudinal direction in the napkin 1) and parallel to the width direction of the main body, and the first L is the shortest distance between the imaginary straight line X1 (virtual straight line passing through the base near the rear flap 7 of the front wing 6 and parallel to the main body width direction), and the rearmost virtual straight line X and the straight side edge C1L. When the shortest distance from the end C1La near the front wing 6 is L1, the ratio L1 / L of the shortest distance L1 to the shortest distance L is 0.2 to 0.8, preferably 0.5 to 0. .8. L1 / L indicates the position of the linear side edge C1L in the rear flap part 7 (rear part C). The smaller the L1 / L is, the closer the linear side edge C1L is to the rear end 1c of the napkin 1. It is in. When L1 / L is in the above range, the fixing ability of the rear flap portion 7 to the clothes is further improved, and turning and twisting of the rear flap portion 7 while wearing the napkin can be effectively prevented.

本実施形態においては、後部フラップ部７が前方ウイング部６との関係において上述したように規定されていることに加えて、更に、前方粘着部８を本体幅方向に二分する仮想直線Ｙ１上に、後方粘着部９が存する。このように、前方粘着部８と後方粘着部９とが本体長手方向に沿った同一直線Ｙ１上にあることにより、ナプキン１の製造時において、両粘着部８，９の塗工（転写）を一つの塗工設備を用いて一回で済ますことが可能となり、ナプキンの生産性が高まる。 In the present embodiment, in addition to the rear flap portion 7 being defined as described above in relation to the front wing portion 6, the front adhesive portion 8 is further bisected in the body width direction on the virtual straight line Y1. There is a rear adhesive portion 9. Thus, since the front adhesive portion 8 and the rear adhesive portion 9 are on the same straight line Y1 along the longitudinal direction of the main body, when the napkin 1 is manufactured, the coating (transfer) of both the adhesive portions 8 and 9 can be performed. This makes it possible to use a single coating facility in a single operation, increasing the productivity of napkins.

上述した効果（生産性の向上）をより一層確実に奏させるようにする観点から、前方粘着部８を本体幅方向に二分する仮想直線Ｙ１と、後方粘着部９を本体幅方向に二分する仮想直線Ｙ２との間の最短距離、即ち、両仮想直線Ｙ１，Ｙ２の本体幅方向におけるズレ量は、好ましくは３ｍｍ以内、更に好ましくは２ｍｍ以内である。本実施形態においては、両仮想直線Ｙ１，Ｙ２間の最短距離は０ｍｍである。
また、生産性の向上と共に、ナプキンの着衣に対する固定性をより一層高める観点から、前方粘着部８におけるナプキン１の周縁部寄りの外側縁を通り且つ本体長手方向と平行な仮想直線Ｙ３と、後方粘着部９におけるナプキン１の周縁部寄りの外側縁を通り且つ本体長手方向と平行な仮想直線Ｙ４との間の最短距離、即ち、両仮想直線Ｙ３，Ｙ４の本体幅方向におけるズレ量は、好ましくは７ｍｍ以内、更に好ましくは５ｍｍ以内である。本実施形態においては、両仮想直線Ｙ３，Ｙ４間の最短距離は０ｍｍである。 From the viewpoint of making the above-described effect (improvement of productivity) more reliable, a virtual straight line Y1 that bisects the front adhesive portion 8 in the body width direction and a virtual that bisects the rear adhesive portion 9 in the body width direction. The shortest distance from the straight line Y2, that is, the shift amount in the main body width direction of both virtual straight lines Y1 and Y2, is preferably within 3 mm, and more preferably within 2 mm. In the present embodiment, the shortest distance between the virtual lines Y1 and Y2 is 0 mm.
Further, from the viewpoint of improving productivity and fixing of the napkin to clothes, a virtual straight line Y3 passing through the outer edge of the front adhesive portion 8 near the periphery of the napkin 1 and parallel to the longitudinal direction of the main body, and the rear The shortest distance between the virtual straight line Y4 passing through the outer edge of the adhesive part 9 near the peripheral edge of the napkin 1 and parallel to the longitudinal direction of the main body, that is, the amount of deviation in the main body width direction of both virtual straight lines Y3 and Y4 is preferable. Is within 7 mm, more preferably within 5 mm. In the present embodiment, the shortest distance between the virtual lines Y3 and Y4 is 0 mm.

本実施形態においては、最大幅Ｗ２を有する領域（直線状側縁Ｃ１Ｌを有する領域）Ｃ１は、図１に示すように最後方仮想直線Ｘから本体長手方向に所定距離を置いて存している。即ち、ナプキン１は、領域Ｃ１よりも本体長手方向後方に、該領域Ｃ１よりも本体幅方向の長さが短い領域を有しており、該領域Ｃ１からナプキン１の後端１ｃに向かって本体幅方向の長さが漸減している。
最大幅Ｗ２を有する領域Ｃ１を本体長手方向に二分する第２仮想直線Ｘ２から本体長手方向に沿って前方に３ｃｍ離間した領域の本体幅方向に沿った長さをＷ３、該領域Ｃ１と最後方仮想直線Ｘとの間に位置する領域の本体長手方向中央における本体幅方向に沿った長さをＷ４とした場合（図１参照）、Ｗ２に対するＷ３の比Ｗ３／Ｗ２が０．８〜１．０であり、且つＷ２に対するＷ４の比Ｗ４／Ｗ２が０．６〜１．０であることが好ましい。特に、Ｗ３／Ｗ２＝０．８５〜０．９５であり、且つＷ４／Ｗ２＝０．７〜１．０であることが好ましい。 In the present embodiment, the region C1 having the maximum width W2 (region having the straight side edge C1L) is located at a predetermined distance from the rearmost virtual straight line X in the longitudinal direction of the main body as shown in FIG. . That is, the napkin 1 has a region that is shorter in the longitudinal direction of the main body than the region C1 and shorter in the width direction of the main body than the region C1, and the main body from the region C1 toward the rear end 1c of the napkin 1 The length in the width direction gradually decreases.
The length along the main body width direction of the area spaced 3 cm forward from the second virtual straight line X2 that bisects the area C1 having the maximum width W2 in the main body longitudinal direction is W3. When the length along the body width direction at the center of the body in the longitudinal direction of the region located between the virtual straight line X is W4 (see FIG. 1), the ratio W3 / W2 of W3 to W2 is 0.8-1. It is preferably 0, and the ratio W4 / W2 of W4 to W2 is preferably 0.6 to 1.0. In particular, it is preferable that W3 / W2 = 0.85 to 0.95 and W4 / W2 = 0.7 to 1.0.

このように、直線状側縁Ｃ１Ｌを有する領域Ｃ１が、最後方仮想直線Ｘから本体長手方向に所定距離を置いて存している場合において、領域Ｃ１の本体長手方向中央における本体幅方向に沿った長さ（最大幅Ｗ２）を基準として、該領域Ｃ１の本体長手方向中央よりも所定距離前方に位置する領域の本体幅方向に沿った長さ（Ｗ３）、及び領域Ｃ１よりも本体長手方向後方に位置する領域の長手方向中央部における本体幅方向に沿った長さ（Ｗ４）が前記比を満たすことにより、後部フラップ部７の長手方向側縁の形状が後方粘着部９の配置位置において略直線状となるため、後方粘着部９を、該後部フラップ部７の長手方向側縁（後部フラップ部７の幅方向端縁）に近接させて配置することが可能となる。そして、後方粘着部９の斯かる配置形態の採用により、後部フラップ部７の着衣に対する固定性が一層高まり、ナプキン着用中の後部フラップ部７のめくれやヨレを効果的に防止するという効果が奏される。
これに対し、特許文献３に記載のナプキンは、後部フラップ部が直線状側縁を有しているものの、Ｗ２，Ｗ３，Ｗ４が前記比を満たしていないため、本願発明が奏する、「後部フラップ部の着衣に対する固定性を一層高め、ナプキン着用中の後部フラップ部のめくれやヨレを効果的に防止する」という効果を奏し得ない。また、特許文献３に記載のナプキンは、後部フラップ部の直線状側縁を有する部位において、複数の後方粘着部が所定間隔を置いて配置されており、このような後方粘着部の分離配置により、後部フラップ部の固定性に劣り、後部フラップ部のヨレを誘発しやすい。 Thus, in the case where the region C1 having the straight side edge C1L is located at a predetermined distance from the rearmost virtual straight line X in the longitudinal direction of the main body, it follows the main body width direction at the center of the main body longitudinal direction of the region C1 The length (W3) along the main body width direction of the region located a predetermined distance ahead of the center in the main body longitudinal direction of the region C1 with respect to the length (maximum width W2), and the main body longitudinal direction relative to the region C1 When the length (W4) along the width direction of the main body in the central portion in the longitudinal direction of the region located at the rear satisfies the above ratio, the shape of the side edge in the longitudinal direction of the rear flap portion 7 is at the position where the rear adhesive portion 9 is disposed. Since it becomes substantially linear, it becomes possible to arrange the back adhesive part 9 close to the longitudinal side edge of the rear flap part 7 (the edge in the width direction of the rear flap part 7). And by adoption of such an arrangement form of the back adhesive part 9, the fixing property to the clothes of the rear flap part 7 is further enhanced, and the effect of effectively preventing the rear flap part 7 from being turned and twisted while wearing the napkin is achieved. Is done.
On the other hand, in the napkin described in Patent Document 3, although the rear flap portion has a straight side edge, W2, W3, and W4 do not satisfy the above-described ratio. It is not possible to achieve the effect of further improving the fixation of the part to the clothes and effectively preventing turning and twisting of the rear flap part while wearing the napkin. In addition, in the napkin described in Patent Document 3, a plurality of rear adhesive portions are arranged at predetermined intervals in a portion having the straight side edge of the rear flap portion. It is inferior to the fixing property of the rear flap part, and tends to induce twisting of the rear flap part.

本実施形態においては、図１に示すように、本体５の非肌当接面上に本体長手方向に沿って、本体５を着衣に固定する本体粘着部１０が配されている。本体粘着部１０は、縦長の矩形形状を有しており、本体５の幅方向中央部にその長手方向を本体長手方向に一致させて配されている。本体粘着部１０の長手方向の長さは、ナプキン１の長手方向の全長に対して好ましくは５０〜９０％であり、本体粘着部１０の幅方向の長さは、吸収体４の幅方向の長さ（最大幅）に好ましくは３０〜８０％である。 In the present embodiment, as shown in FIG. 1, a main body adhesive portion 10 that fixes the main body 5 to clothing is disposed on the non-skin contact surface of the main body 5 along the main body longitudinal direction. The main body adhesive portion 10 has a vertically long rectangular shape, and is arranged at the center in the width direction of the main body 5 with its longitudinal direction coinciding with the longitudinal direction of the main body. The length in the longitudinal direction of the main body adhesive portion 10 is preferably 50 to 90% with respect to the total length in the longitudinal direction of the napkin 1, and the length in the width direction of the main body adhesive portion 10 is in the width direction of the absorbent body 4. The length (maximum width) is preferably 30 to 80%.

図１に示すように、本体粘着部１０のナプキン後端１ｃ寄りの端部と、後方粘着部９のナプキン後端１ｃ寄りの端部とは、本体長手方向において実質的に同位置にある。ここで、「実質的に同位置にある」とは、後方粘着部９及び本体粘着部１０のナプキン後端１ｃ寄りの後端９ｃ，１０ｃそれぞれに対して本体幅方向と平行な接線を引いたとき、これら両接線間の最短距離、即ち、両接線の本体長手方向におけるズレ量が５ｍｍ以内である場合をいう。本実施形態においては、本体粘着部１０の後端１０ｃと、一対の後方粘着部９，９それぞれの後端９ｃとは、ナプキン１を本体幅方向に横断する１本の仮想直線Ｘ３上にあり、前記ズレ量は０ｍｍである。
このように、後部粘着部９の後端９ｃと本体粘着部１０の後端１０ｃとが本体長手方向において実質的に同位置にあることにより、ナプキン１の着衣に対する固定性が向上し、使用中にヨレやずれが起こりにくくなる。後部粘着部９の後端９ｃが本体粘着部１０の後端１０ｃから一定距離以上離間した後方にあると、ナプキン１の着用時に本体５がヨレたりずれたりするおそれがあり、逆に、後部粘着部９の後端９ｃが本体粘着部１０の後端１０ｃから一定距離離間した前方にあると、後部フラップ部７の下着への固定性が低下するおそれがある。 As shown in FIG. 1, the end of the main body adhesive portion 10 near the napkin rear end 1c and the end of the rear adhesive portion 9 near the napkin rear end 1c are substantially in the same position in the main body longitudinal direction. Here, “substantially in the same position” means that tangent lines parallel to the width direction of the main body are drawn with respect to the rear ends 9c and 10c of the rear adhesive portion 9 and the main body adhesive portion 10 near the napkin rear end 1c. Sometimes, the shortest distance between both tangents, that is, the amount of deviation of both tangents in the longitudinal direction of the body is within 5 mm. In the present embodiment, the rear end 10c of the main body adhesive portion 10 and the rear ends 9c of the pair of rear adhesive portions 9, 9 are on one virtual straight line X3 that crosses the napkin 1 in the main body width direction. The amount of deviation is 0 mm.
As described above, the rear end 9c of the rear adhesive portion 9 and the rear end 10c of the main body adhesive portion 10 are substantially in the same position in the longitudinal direction of the main body, thereby improving the fixability of the napkin 1 to clothes and being used. Will be less likely to be twisted or displaced. If the rear end 9c of the rear adhesive portion 9 is located behind the rear end 10c of the main body adhesive portion 10 by a predetermined distance or more, the main body 5 may be twisted or displaced when the napkin 1 is worn. If the rear end 9c of the part 9 is in front of the main body adhesive part 10 at a predetermined distance from the rear end 10c, the fixability to the underwear of the rear flap part 7 may be lowered.

直線状側縁Ｃ１Ｌの長さは、前方ウイング部６の本体長手方向に沿った長さよりも長いことが好ましい。即ち、直線状側縁Ｃ１Ｌの長さをＬ２、前方ウイング部６の本体長手方向に沿った長さをＬ３とした場合、Ｌ３に対するＬ２の比Ｌ２／Ｌ３が１を越えることが好ましく、Ｌ２／Ｌ３＝１〜５であることが更に好ましい。ここで、「前方ウイング部の本体長手方向に沿った長さ」とは、前方ウイング部の本体長手方向に沿った側縁６Ｌの長さを意味する。直線状側縁Ｃ１Ｌが、前方ウイング部６の本体長手方向に沿った長さを超える長さを有していることにより、下着への前方ウイング部６の折り返し装着性の向上とクロッチ部の湾曲形状にフィットしやすいという効果が奏される。 The length of the straight side edge C1L is preferably longer than the length of the front wing portion 6 along the longitudinal direction of the main body. That is, when the length of the straight side edge C1L is L2 and the length of the front wing portion 6 along the longitudinal direction of the main body is L3, the ratio L2 / L3 of L2 to L3 is preferably more than 1, and L2 / More preferably, L3 = 1 to 5. Here, “the length along the main body longitudinal direction of the front wing portion” means the length of the side edge 6L along the main body longitudinal direction of the front wing portion. The straight side edge C1L has a length that exceeds the length of the front wing portion 6 along the longitudinal direction of the main body, thereby improving the foldability of the front wing portion 6 to the underwear and curving the crotch portion. The effect of being easy to fit the shape is produced.

また、直線状側縁Ｃ１Ｌの長さ（Ｌ２）は、後方部Ｃの本体長手方向に沿った長さ（最後方仮想直線Ｘと前記第１仮想直線Ｘ１との間の最短距離Ｌに相当）に対して、好ましくは２０〜７０％、更に好ましくは３０〜５５％である。 The length (L2) of the straight side edge C1L is a length along the longitudinal direction of the main body of the rear portion C (corresponding to the shortest distance L between the rearmost virtual line X and the first virtual line X1). On the other hand, it is preferably 20 to 70%, more preferably 30 to 55%.

後方粘着部９の本体長手方向に沿った長さは、前方粘着部８の本体長手方向に沿った長さと同じか、又はこれよりも長いことが好ましい。即ち、後方粘着部９の本体長手方向に沿った長さをＬ４、前方粘着部８の本体長手方向に沿った長さをＬ５とした場合、Ｌ５に対するＬ４の比Ｌ４／Ｌ５が１以上であることが好ましく、Ｌ４／Ｌ５＝１．１〜１．３であることが更に好ましい。Ｌ４／Ｌ５が１以上であることにより、後部フラップ部７の着衣に対する固定性が一層高まり、後部フラップ部７のヨレやめくれがより効果的に防止されると共に、使用後のナプキンの取り外しが一層容易になる。Ｌ４／Ｌ５が１未満の場合、前方ウイング部６の着衣に対する固定性が高くなりすぎて、使用後のナプキンを取り外す際に前方ウイング部６の脱落等の不都合が生じるおそれがある。本実施形態においては、上述した直線状側縁Ｃ１Ｌを有する後部フラップ部７を採用していることにより、後方粘着部９の本体長手方向に沿った長さ（Ｌ４）を、直線状側縁を有していない従来の後部フラップ部を採用しているナプキンに比して長くすることができるため、Ｌ４／Ｌ５が１以上となる設計が可能である。 It is preferable that the length of the back adhesive portion 9 along the main body longitudinal direction is the same as or longer than the length of the front adhesive portion 8 along the main body longitudinal direction. That is, when the length of the rear adhesive portion 9 along the longitudinal direction of the main body is L4 and the length of the front adhesive portion 8 along the longitudinal direction of the main body is L5, the ratio L4 / L5 of L4 to L5 is 1 or more. It is more preferable that L4 / L5 = 1.1 to 1.3. When L4 / L5 is 1 or more, the fixation of the rear flap portion 7 to the clothes is further enhanced, the twisting and turning of the rear flap portion 7 is more effectively prevented, and the napkin after use is further removed. It becomes easy. When L4 / L5 is less than 1, the fixing property of the front wing portion 6 to the clothes becomes too high, and there is a possibility that inconvenience such as dropping of the front wing portion 6 may occur when removing the napkin after use. In this embodiment, by adopting the rear flap portion 7 having the linear side edge C1L described above, the length (L4) along the longitudinal direction of the main body of the rear adhesive portion 9 is changed to the linear side edge. Since it can be made longer than a conventional napkin that does not have a rear flap portion, a design in which L4 / L5 is 1 or more is possible.

後方粘着部９の本体長手方向に沿った長さ（Ｌ４）は、後方部Ｃの本体長手方向に沿った長さ（最後方仮想直線Ｘと前記第１仮想直線Ｘ１との間の最短距離Ｌに相当）に対して、好ましくは１０〜４５％、更に好ましくは１５〜３５％である。
また、後方粘着部９の前記長さＬ４は、直線状側縁Ｃ１Ｌの長さ（Ｌ２）に対して、好ましくは７０〜１００％、更に好ましくは８０〜９５％である。
前方粘着部８の本体長手方向に沿った長さは、前方ウイング部６の本体長手方向に沿った長さ（Ｌ３）に対して、好ましくは７０〜１００%、更に好ましくは８０〜９５％である。 The length (L4) along the main body longitudinal direction of the rear adhesive portion 9 is the length along the main body longitudinal direction of the rear portion C (the shortest distance L between the rearmost virtual straight line X and the first virtual straight line X1). Is preferably 10 to 45%, more preferably 15 to 35%.
Further, the length L4 of the rear adhesive portion 9 is preferably 70 to 100%, more preferably 80 to 95% with respect to the length (L2) of the linear side edge C1L.
The length along the main body longitudinal direction of the front adhesive portion 8 is preferably 70 to 100%, more preferably 80 to 95% with respect to the length (L3) along the main body longitudinal direction of the front wing portion 6. is there.

後方粘着部９の本体幅方向に沿った長さは、最大幅Ｗ２（領域Ｃ１の本体幅方向に沿った長さ）に対して、好ましくは１０〜３０％、更に好ましくは１５〜２５％である。
前方粘着部８の本体幅方向に沿った長さは、最大幅Ｗ１（領域Ｂ１の本体幅方向に沿った長さ）に対して、好ましくは１０〜３０%、更に好ましくは１５〜２５％である。 The length along the main body width direction of the back adhesive portion 9 is preferably 10 to 30%, more preferably 15 to 25% with respect to the maximum width W2 (the length along the main body width direction of the region C1). is there.
The length along the main body width direction of the front adhesive portion 8 is preferably 10 to 30%, more preferably 15 to 25% with respect to the maximum width W1 (the length along the main body width direction of the region B1). is there.

前方粘着部８は、前方ウイング部６の着衣に対する固定性を高める観点から、少なくともその一部が、前方ウイング部６の本体長手方向に沿った側縁６Ｌから５ｍｍ以内の領域に配されていることが好ましく、該側縁６Ｌから３〜４ｍｍ以内の領域に配されていることが更に好ましい。本実施形態においては、上述したように、前方ウイング部６の側縁６Ｌは直線状側縁を有しているため、図１に示すように前方粘着部８を該直線状側縁に沿って配することで、前記数値範囲を満たすことが可能である。
また、後方粘着部９は、後部フラップ部７の着衣に対する固定性を高める観点から、少なくともその一部が、直線状側縁ＣＬ１から５ｍｍ以内の領域に配されていることが好ましく、該直線状側縁ＣＬ１から３〜４ｍｍ以内の領域に配されていることが更に好ましい。 At least a part of the front adhesive portion 8 is arranged in a region within 5 mm from the side edge 6L along the longitudinal direction of the main body of the front wing portion 6 from the viewpoint of improving the fixing property of the front wing portion 6 to clothes. It is more preferable that it is arranged in a region within 3 to 4 mm from the side edge 6L. In the present embodiment, as described above, the side edge 6L of the front wing portion 6 has a straight side edge. Therefore, the front adhesive portion 8 is moved along the straight side edge as shown in FIG. By arranging, it is possible to satisfy the numerical range.
Further, from the viewpoint of improving the fixation of the rear flap portion 7 to the clothes, at least a part of the rear adhesive portion 9 is preferably disposed in a region within 5 mm from the linear side edge CL1. More preferably, it is arranged in a region within 3 to 4 mm from the side edge CL1.

また、後方粘着部９は、後部フラップ部７の着衣に対する固定性を高める観点から、少なくともその一部が、最大幅Ｗ２を有する領域Ｃ１と最後方仮想直線Ｘとの間に位置する領域を本体長手方向に二分する第３仮想直線（図１中、符号Ｗ４で示されている直線）から本体長手方向前方に２０ｍｍ以内の領域に配されていることが好ましく、該第３仮想直線から本体長手方向前方に１０〜１５ｍｍの領域に配されていることが更に好ましい。 In addition, the rear adhesive portion 9 is a main body in which at least part of the rear adhesive portion 9 is located between the region C1 having the maximum width W2 and the rearmost virtual straight line X from the viewpoint of improving the fixation of the rear flap portion 7 to clothes. It is preferably arranged in a region within 20 mm forward of the main body longitudinal direction from the third virtual straight line (indicated by reference numeral W4 in FIG. 1) that bisects in the longitudinal direction. More preferably, it is arranged in a region of 10 to 15 mm forward in the direction.

肌当接面を構成する表面シート２、非肌当接面を構成する裏面シート３、吸収体４としては、それぞれ当該技術分野において従来用いられている各種のもの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、不織布や開孔フィルム等の各種液透過性のシート材を用いることができる。裏面シート３は、液不透過性でも液透過性でも良く、例えば、透湿性を有しない樹脂フィルムや、微細孔を有し、透湿性を有する樹脂フィルム、撥水不織布等の不織布、これらと他のシートとのラミネート体等を用いることができる。吸収体４としては、解繊パルプ等の親水性繊維からなる繊維集合体又はこれに高吸収性ポリマーを保持させたもの等を用いることができる。また、粘着部８，９，１０形成用の粘着剤としては、例えばホットメルト接着剤を用いることができる。 As the top sheet 2 constituting the skin contact surface, the back sheet 3 constituting the non-skin contact surface, and the absorbent body 4, various types conventionally used in the technical field can be used without particular limitation. . As the surface sheet 2, various liquid-permeable sheet materials, such as a nonwoven fabric and an apertured film, can be used, for example. The back sheet 3 may be liquid-impermeable or liquid-permeable, for example, a resin film that does not have moisture permeability, a resin film that has micropores and has moisture permeability, a nonwoven fabric such as a water-repellent nonwoven fabric, and the like. A laminate with this sheet can be used. As the absorbent body 4, a fiber assembly made of hydrophilic fibers such as defibrated pulp, or a structure in which a superabsorbent polymer is held thereon can be used. Moreover, as a pressure-sensitive adhesive for forming the pressure-sensitive adhesive portions 8, 9, and 10, for example, a hot melt adhesive can be used.

上述の如き構成を有する本実施形態のナプキン１は、図３に示すように、一対の前方ウイング部６，６及び一対の後部フラップ部７，７を、本体長手方向と平行な２本の折曲線Ｚ，Ｚに沿って本体５の肌当接面側に折り返した場合、一対の前方ウイング部６，６それぞれの本体長手方向に沿った側縁６Ｌ，６Ｌ間の最短距離Ｄ１が、好ましくは３０ｍｍ以内、更に好ましくは１０〜２０ｍｍであり、一対の後部フラップ部７，７それぞれの直線状側縁ＣＬ１，ＣＬ１間の最短距離Ｄ２が、好ましくは３０ｍｍ以内、更に好ましくは１０〜２０ｍｍである。折曲線Ｚは、吸収体４の長手方向側縁よりナプキン１の幅方向外方且つ該長手方向側縁の近傍に位置する。 As shown in FIG. 3, the napkin 1 according to the present embodiment having the above-described configuration includes a pair of front wing portions 6 and 6 and a pair of rear flap portions 7 and 7 which are folded in two parallel to the longitudinal direction of the main body. When folded along the skin contact surface side of the main body 5 along the curves Z and Z, the shortest distance D1 between the side edges 6L and 6L along the main body longitudinal direction of each of the pair of front wing portions 6 and 6 is preferably It is within 30 mm, more preferably 10-20 mm, and the shortest distance D2 between the linear side edges CL1, CL1 of each of the pair of rear flaps 7, 7 is preferably within 30 mm, more preferably 10-20 mm. The folding line Z is located outward in the width direction of the napkin 1 from the longitudinal side edge of the absorbent body 4 and in the vicinity of the longitudinal side edge.

尚、図３は、本実施形態のナプキン１の使用前の形態を示す平面図である。ナプキン１は、使用前においては、一対の前方ウイング部６，６及び一対の後部フラップ部７，７が本体５の肌当接面側に折り返された状態で、一対の前方粘着部８，８それぞれの全面が１枚の剥離シート１１で被覆されていると共に、一対の後方粘着部９，９それぞれの全面が１枚の剥離シート１１で被覆されている。本実施形態のナプキン１は、上述したように最短距離Ｄ１及びＤ２が何れも短いため、剥離シート１１の本体幅方向に沿った長さが短くて済み、これにより、優れた生産性を有する。また、本実施形態のナプキン１においては、上述した直線状側縁Ｃ１Ｌを有する後部フラップ部７を採用していることにより、後方粘着部９の面積を従来に比して大きく設計することが可能であるため、後方粘着部９の面積を大きくすることで剥離シート１１の後方粘着部９に対する粘着力を向上させ、製造時に剥離シート１１が剥がれる等の不都合を回避することができ、生産性の更なる向上を図ることができる。 In addition, FIG. 3 is a top view which shows the form before use of the napkin 1 of this embodiment. The napkin 1 is a pair of front adhesive portions 8 and 8 in a state where the pair of front wing portions 6 and 6 and the pair of rear flap portions 7 and 7 are folded back to the skin contact surface side of the main body 5 before use. Each entire surface is covered with one release sheet 11, and each of the pair of rear adhesive portions 9, 9 is covered with one release sheet 11. As described above, the napkin 1 of this embodiment has a short length along the main body width direction of the release sheet 11 because the shortest distances D1 and D2 are both short, and thus has excellent productivity. Moreover, in the napkin 1 of this embodiment, the rear flap part 7 having the linear side edge C1L described above is employed, so that the area of the rear adhesive part 9 can be designed to be larger than the conventional one. Therefore, by increasing the area of the rear adhesive part 9, the adhesive force of the release sheet 11 to the rear adhesive part 9 can be improved, and inconveniences such as peeling of the release sheet 11 during production can be avoided, and productivity can be avoided. Further improvement can be achieved.

本実施形態のナプキン１は、通常、図３に示す状態から更に、本体幅方向に沿った折曲線（図示せず）に沿って適宜折り畳まれ、必要に応じ包装材（図示せず）に包装された状態で消費者に提供される。該包装材は、通常、本体粘着部１０を介してナプキン１に粘着される。
尚、本実施形態のナプキン１の製造時において、前方粘着部８及び後方粘着部９の形成は次のようにして行われる。先ず、粘着部が形成されていない前方ウイング部６及び後部フラップ部７を、図３に示す如く本体５の肌当接面側に折り返し、次いで、折り返された前方ウイング部６及び後部フラップ部７それぞれの非肌当接面上に、予め粘着剤が塗布された剥離シート１１を貼り付けて、該粘着剤を前方ウイング部６及び後部フラップ部７に転写することにより、該粘着剤からなる前方粘着部８及び後方粘着部９をそれぞれ形成する。 The napkin 1 according to the present embodiment is normally further folded along a folding line (not shown) along the width direction of the main body from the state shown in FIG. 3, and wrapped in a packaging material (not shown) as necessary. Provided to consumers in a state of being made. The packaging material is usually adhered to the napkin 1 via the main body adhesive portion 10.
In addition, at the time of manufacture of the napkin 1 of this embodiment, formation of the front adhesion part 8 and the back adhesion part 9 is performed as follows. First, the front wing part 6 and the rear flap part 7 in which the adhesive part is not formed are folded back to the skin contact surface side of the main body 5 as shown in FIG. 3, and then the folded front wing part 6 and rear flap part 7 are folded. By attaching a release sheet 11 pre-applied with an adhesive on each non-skin contact surface and transferring the adhesive to the front wing part 6 and the rear flap part 7, the front made of the adhesive An adhesive portion 8 and a rear adhesive portion 9 are formed.

本実施形態のナプキン１は、前方ウイング部及び後部フラップ部を有するこの種の生理用ナプキンと同様に、粘着部を介して下着に固定されて使用される。
本実施形態のナプキン１は、前方ウイング部６と後部フラップ部７とが同じ最大延出幅を有し、且つ後部フラップ部７の最大延出幅を有する部分の長手方向側縁が、本体長手方向と平行な直線状側縁Ｃ１Ｌとなっているため、後部フラップ部７がナプキン着用者の臀部を広くカバーすることができ、且つ、後部粘着部９により後部フラップ部７が下着に対して安定的に固定するので、身体後方からの液漏れ防止性に優れる。
また、本実施形態のナプキン１は、前方粘着部８と後方粘着部９とが本体長手方向に沿った同一直線上にあるため、両粘着部８，９の形成工程の簡略化が図られており、生産性に優れる。 The napkin 1 of the present embodiment is used by being fixed to an undergarment via an adhesive portion, similarly to this type of sanitary napkin having a front wing portion and a rear flap portion.
In the napkin 1 of the present embodiment, the front wing portion 6 and the rear flap portion 7 have the same maximum extension width, and the side edge in the longitudinal direction of the portion having the maximum extension width of the rear flap portion 7 Since it is a straight side edge C1L parallel to the direction, the rear flap portion 7 can cover the napkin wearer's buttocks widely, and the rear flap portion 7 is stable against underwear by the rear adhesive portion 9 Since it is fixed in place, it is excellent in preventing leakage from the back of the body.
Moreover, since the front adhesive part 8 and the back adhesive part 9 are on the same straight line along a main body longitudinal direction, the simplification of the formation process of both adhesive parts 8 and 9 is achieved. Excellent productivity.

以上、本発明をその好ましい実施形態に基づき説明したが、本発明は前記実施形態に制限されない。
例えば、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、軽失禁ライナー等にも適用できる。 As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment.
For example, in the above-described embodiment, a sanitary napkin is given as one example of application of the absorbent article of the present invention.

図１は、本発明の一実施形態である生理用ナプキンの裏面シート側の面（非肌当接面）を示す平面図である。FIG. 1 is a plan view showing a surface (non-skin contact surface) on the back sheet side of a sanitary napkin according to an embodiment of the present invention. 図２は、図１に示す生理用ナプキンの表面シート側の面（肌当接面）を示す平面図である。FIG. 2 is a plan view showing a surface (skin contact surface) of the sanitary napkin shown in FIG. 1 on the surface sheet side. 図３は、図１に示す生理用ナプキンの使用前の形態を示す平面図である。FIG. 3 is a plan view showing a form before use of the sanitary napkin shown in FIG.

Explanation of symbols

１生理用ナプキン
１ｃ生理用ナプキンの本体長手方向の後端
２表面シート
３裏面シート
４吸収体
５本体
６前方ウイング部
６Ｌ前方ウイング部の本体長手方向に沿った側縁
７後部フラップ部
８前方粘着部
９後方粘着部
１０本体粘着部
Ａ前方部
Ｂ排泄部対向部
Ｃ後方部
Ｂ１一対の前方ウイング部が存する部位において本体幅方向に沿った長さが最大の領域
Ｃ１一対の後部フラップ部が存する部位において本体幅方向に沿った長さが最大の領域
Ｃ１Ｌ直線状側縁
Ｃ１Ｌａ直線状側縁の前方ウイング部寄りの端
Ｘ最後方仮想直線
Ｘ１第１仮想直線
Ｘ２第２仮想直線
Ｙ１前方粘着部を本体幅方向に二分する仮想直線 DESCRIPTION OF SYMBOLS 1 Sanitary napkin 1c The rear end 2 of the sanitary napkin in the longitudinal direction of the main body 2 The top sheet 3 The back sheet 4 The absorbent body 5 The main body 6 The front wing portion 6L The side edge 7 Part 9 Back adhesive part 10 Main body adhesive part A Front part B Excretion part opposing part C Rear part B1 The area | region C1 in which the length along a main body width direction exists in the site | part in which a pair of front wing part exists has a pair of rear part flap parts. Region C1L having the maximum length along the width direction of the main body at the part C1L Straight side edge C1La End X of the straight side edge near the front wing part Rearmost virtual straight line X1 First virtual straight line X2 Second virtual straight line Y1 Front adhesive part Virtual straight line that bisects the body in the width direction

Claims

A vertically long main body, a pair of front wing portions extending on the left and right sides of the main body, and a pair of rear flap portions in a portion located rearward of the front wing portion, the non-skin contact of the front wing portion A front adhesive portion for fixing the front wing portion to the clothing is disposed on the surface, and a rear adhesive portion for fixing the rear flap portion to the clothing is disposed on the non-skin contact surface of the rear flap portion. A sanitary napkin ,
The length of the region having the maximum length along the body width direction in the portion where the pair of front wing portions exists is the maximum width W1, and the length along the body width direction is the portion where the pair of rear flap portions exist. When the maximum width W2 is the maximum width W2, the maximum width W1 and the maximum width W2 are substantially the same, and both side edges in the longitudinal direction of the region having the maximum width W2 are It is a straight side edge extending linearly in the longitudinal direction, the rear adhesive part is arranged along the linear side edge, and the shape of the longitudinal side edge of the rear flap part is the rear adhesive part Is substantially linear at the location of the part,
A first virtual line passing through the rear end of the sanitary napkin in the longitudinal direction of the main body and parallel to the width direction of the main body, and a first virtual line passing through the root of the front wing portion near the rear flap and parallel to the width direction of the main body When the shortest distance between the straight line is L and the shortest distance between the rearmost virtual straight line and the end of the straight side edge near the front wing portion is L1, the shortest distance L1 with respect to the shortest distance L The ratio L1 / L is 0.2 to 0.8,
On the virtual straight line that bisects the front adhesive portion in the body width direction, the rear adhesive portion exists ,
Each of the front adhesive portion and the rear adhesive portion has a vertically long rectangular shape, and is arranged such that its longitudinal direction matches the longitudinal direction of the main body,
When the length along the main body longitudinal direction of the back adhesive portion is L4, and the length along the main body longitudinal direction of the front adhesive portion is L5, the ratio L4 / L5 of L4 to L5 is 1 or more,
A main body adhesive portion for fixing the main body to clothes is disposed along the longitudinal direction of the main body on the non-skin contact surface of the main body, and an end portion near the rear end of the main body adhesive portion and the rear adhesive The end portion of the portion near the rear end is substantially in the same position in the longitudinal direction of the main body,
At least a part of the front adhesive part is disposed in a region within 5 mm from a side edge along the longitudinal direction of the main body of the front wing part, and at least a part of the rear adhesive part is from the straight side edge. It is arranged in the area within 5mm,
When the pair of front wing portions and the pair of rear flap portions are folded back integrally on the skin contact surface side of the main body along two folding lines parallel to the longitudinal direction of the main body, the pair of front wings A sanitary napkin in which the shortest distance D1 between side edges along the longitudinal direction of the body of each part and the shortest distance D2 between the straight side edges of each of the pair of rear flap parts are 10 to 20 mm, respectively .

The region having the maximum width W2 exists at a predetermined distance in the longitudinal direction of the main body from the rearmost virtual straight line,
A region having a maximum width W2 is defined as a length along the main body width direction of a region 3 cm ahead of the second virtual straight line that bisects the region having the maximum width W2 in the main body longitudinal direction. When the length along the body width direction at the center in the longitudinal direction of the body in the region located between the rearmost imaginary straight line and W4 is W4 to W2, the ratio W3 / W2 of W3 is 0.8 to 1.0. The sanitary napkin according to claim 1, wherein the ratio W4 / W2 of W4 to W2 is 0.6 to 1.0.

At least a part of the rear adhesive portion is within 20 mm forward of the main body longitudinal direction from the third virtual straight line that bisects the region located between the region having the maximum width W2 and the rearmost virtual straight line in the main body longitudinal direction. The sanitary napkin according to claim 2, which is disposed in the region.

The sanitary napkin according to any one of claims 1 to 3 , wherein a length of the straight side edge is longer than a length of the front wing portion along a longitudinal direction of the main body.