本發明者等人發現，當就寢時採用使身體為仰臥之姿勢時，就通常之夜用經期衛生棉而言，於較與穿著者之液體排泄部對向配置之排泄部對向部更靠後方容易產生間隙，在一次排泄出大量經血之情形時等，經血容易順著肌膚流動，而導致洩漏。針對此種洩漏，若穿著專利文獻1之吸收性物品，則藉由後方狹縫區域而使得服貼性提高，故而雖有固定之效果，但有因配置於中央狹縫區域之吸收體之中高部分與自該中高部至構成後方狹縫區域之後方狹縫為止之間之部分的剛性差，而導致於吸收性物品與肌膚之間產生間隙之情形，因而專利文獻1之吸收性物品存在改善之餘地。 又，若穿著專利文獻2中所記載之吸收性物品，則於穿著時吸收體之後方區域變形為朝向穿著者之肌膚以貫通孔為起點彎曲之形狀，故而會給穿著者帶來不適感。 因此，本發明之課題在於提供一種可消除上述先前技術所存在之缺點之吸收性物品。 以下，將本發明之吸收性物品基於作為其較佳之一實施形態之經期衛生棉1(以下亦稱為「衛生棉1」)參照圖式進行說明。衛生棉1具備與穿著者之前後方向對應之縱向X及與縱向X正交之橫向Y，且具有吸收體4，且沿著該縱向X具有前方部F、中間部M及後方部R。圖1～圖3所示之衛生棉1係適於就寢時使用之夜用衛生棉。圖1中表示自肌膚對向面側觀察衛生棉1而得之俯視圖，圖2及圖3中表示衛生棉1之剖視圖。又，圖4中表示自肌膚對向面側觀察衛生棉1所具備之吸收體4而得之俯視圖。 於本實施形態中，如圖1～圖3所示，衛生棉1具有吸收性本體10，該吸收性本體10具備吸收體4、夾持吸收體4之正面片材2及背面片材3。換言之，吸收性本體10具有：液體透過性之正面片材2，其形成肌膚對向面；背面片材3，其形成非肌膚對向面；及吸收體4，其介於該等兩片材2、3間。於本實施形態中，衛生棉1之吸收體4係由吸收性片材形成，具體而言，如圖2及圖3所示，成為於厚度方向上重合有複數層吸收性片材之構造。於衛生棉1中，由吸收性片材形成之吸收體4含有高吸收性聚合物及構成纖維。 如圖1所示，衛生棉1之吸收性本體10具有：中間部M，其包含於穿著時與穿著者之排泄部即陰道口對向配置之排泄部對向部；前方部F，其配置於較該中間部M更偏靠穿著者之前側；及後方部R，其配置於較該中間部M更偏靠穿著者之後側；且成為於前後方向上較長之形狀。衛生棉1及吸收性本體10具有與穿著者之前後方向對應之縱向X、與該縱向X正交之橫向Y、及厚度方向Z。即，吸收性本體10係沿著前後方向即縱向X，具有前方部F、中間部M及後方部R，以該順序被劃分。 又，衛生棉1係相對於縱中心線CL成為左右對稱形，該縱中心線CL係通過衛生棉1之橫向Y中心且於縱向X上延伸之假想二等分線。 又，於本說明書中，肌膚對向面係衛生棉1或其構成構件(例如正面片材2)之於衛生棉1之穿著時朝向穿著者之肌膚側的面，非肌膚對向面係衛生棉1或其構成構件之於衛生棉1之穿著時朝向與肌膚側相反之側(穿衣側)的面。又，縱向X與衛生棉1及吸收性本體10之長度方向一致，橫向Y與衛生棉1及吸收性本體10之寬度方向(與長度方向正交之方向)一致。 於本實施形態中，如圖1及圖3所示，衛生棉1除具有吸收性本體10以外，亦具有一對後翼部10H、10H，該等一對後翼部10H、10H係於吸收性本體10之較中間部M更靠後方即後方部R，分別自吸收性本體10之沿著縱向X之兩側部朝橫向Y之外側延出。又，於衛生棉1中，如圖1及圖2所示，具有一對翼部10W、10W，該等一對翼部10W、10W係分別自吸收性本體10之中間部M之沿著縱向X之兩側部朝橫向Y之外側延出。 再者，於本發明之吸收性物品中，所謂中間部M意指於如本實施形態之衛生棉1般具有翼部10W之情形時，於縱向X上具有翼部10W之區域(被一翼部10W之沿著縱向X之根部與另一翼部10W之沿著縱向X之根部夾著之區域)。又，意指於不具有翼部之吸收性物品之情形時，關於在將吸收性物品呈單個包裝形態摺疊時產生之於橫向Y上橫跨該吸收性物品之彎摺線(未圖示)，自該吸收性物品之縱向X之前端數起被第1彎摺線與第2彎摺線包圍之區域。 於本實施形態之衛生棉1中，如圖1～圖3所示，正面片材2係被覆吸收體4之肌膚對向面之全域。另一方面，背面片材3係被覆吸收體4之非肌膚對向面之全域，進而自正面片材2之沿著縱向X之兩側緣朝橫向Y之外側延出，並與下述防漏翻邊形成用片材5一同形成側翼部10S。固定於正面片材2之肌膚對向面之防漏翻邊形成用片材5與背面片材3係於吸收體4之自縱向X之兩端緣之延出部分，藉由接著劑、熱密封、超音波密封等公知之接合手段而相互接合。再者，亦可藉由接著劑將正面片材2及背面片材3之各者與吸收體4之間接合。 於衛生棉1中，如圖1～圖3所示，防漏翻邊形成用片材5係配置並固定於配置在吸收性本體10之肌膚對向面的正面片材2之肌膚對向面之沿著縱向X之兩側部。較佳為，防漏翻邊形成用片材5係以於俯視時與吸收體4之沿著縱向X之左右兩側部重合之方式，遍及吸收性本體10之縱向X之全長配置並固定。防漏翻邊形成用片材5例如亦可將自由端部側回折，於回折後形成之回折部分之內部配置防漏翻邊形成用彈性構件。若如此配置防漏翻邊形成用彈性構件，則藉由防漏翻邊形成用彈性構件之收縮力，而形成回折部分朝向穿著者之肌膚側立起之防漏翻邊。若如此形成防漏翻邊，則可防止排泄至肌膚對向面之經血之側漏。 於衛生棉1中，如圖1所示，側翼部10S係於中間部M朝向橫向Y之外側大幅度地突出，藉此，於吸收性本體10之沿著縱向X之左右兩側延設一對翼部10W、10W。又，如圖1所示，側翼部10S係於後方部R朝向橫向Y之外側大幅度地突出，藉此，於吸收性本體10之沿著縱向X之左右兩側延設一對後翼部10H、10H。 翼部10W係被朝短褲等所穿衣物之襠部之非肌膚對向面側回折而使用者。於衛生棉1中，如圖1所示，於俯視時，翼部10W具有下底(較上底長之邊)位於吸收性本體10之沿著縱向X之側部側之大致梯形形狀。於翼部10W之非肌膚對向面，配置有作為將該翼部10W(衛生棉1)固定於短褲等所穿衣物(未圖示)之防偏移構件之翼部黏著部10W1，藉由該翼部黏著部10W1，於使用時，可將朝所穿衣物之襠部之非肌膚對向面(外表面)側回折之翼部10W黏著並固定於該襠部。翼部黏著部10W1係以於縱向X上延伸之方式配置。於衛生棉1中，翼部黏著部10W1之形狀係於縱向X上較長之矩形，且與縱中心線CL平行地延伸。又，於吸收性本體10之非肌膚對向面亦形成有用以將吸收性本體10固定於短褲等所穿衣物之本體黏著部(未圖示)。 後翼部10H係於穿著時配置於短褲等所穿衣物之肌膚對向面側者。於後翼部10H之非肌膚對向面，配置有作為將該後翼部10H固定於短褲等所穿衣物(未圖示)之防偏移構件之後翼部黏著部10H1，藉由該後翼部黏著部10H1，於使用時可使後翼部10H黏著並固定於所穿衣物之肌膚對向面(內表面)上。後翼部黏著部10H1係以於縱向X上延伸之方式配置。於衛生棉1中，後翼部黏著部10H1之形狀係於縱向X上較長之矩形，且與縱中心線CL平行地延伸。 如圖1～圖3所示，衛生棉1具備夾持吸收體4之正面片材2及背面片材3，且於肌膚對向面具備正面片材2及吸收體4成為一體之於背面片材3側具有底部之槽9。具體而言，於吸收性本體10之肌膚對向面(正面片材2之肌膚對向面)具備正面片材2及吸收體4朝向背面片材3側一體地凹陷而成之線狀之槽9。因此，槽9成為關於正面片材2及吸收體4，作為構成構件之各纖維之密度高於槽之周圍部之密度的槽。線狀之槽9中之「線狀」意指槽(凹陷部)之形狀於俯視時並不限定於直線，亦包含曲線。再者，各線可為連續線亦可為如虛線等之非連續線。例如，槽9亦可包含非連續之多個點壓紋所形成之行。 於衛生棉1中，如圖1所示般進行俯視時，槽9具有：第1橫向壓軋槽91，其於前方部F及後方部R分別在橫向Y上延伸；及縱壓軋槽92，其於衛生棉1之縱向X之兩側部，遍及前方部F、中間部M及後方部R在縱向X上延伸。於衛生棉1中，前方部F及後方部R之第1橫向壓軋槽91係一面朝向縱向X外側形成凸出之曲線狀，一面於橫向Y上延伸。於衛生棉1中，前方部F之第1橫向壓軋槽91、一方之縱壓軋槽92、後方部R之第1橫向壓軋槽91、及另一方之縱壓軋槽92相連而形成環狀之全周槽。又，於衛生棉1中，槽9係於前方部F之較第1橫向壓軋槽91更靠縱向X內側，具有於橫向Y上延伸之第2橫向壓軋槽93。又，於衛生棉1中，槽9係於後方部R且被該後方部R之一對縱壓軋槽92、92及第1橫向壓軋槽91包圍之區域內，具有一面朝向縱向X外側形成凸出之曲線狀一面延伸之第3壓軋槽94。再者，於衛生棉1中，第2橫向壓軋槽93及第3壓軋槽94均如圖1所示般不與一對縱壓軋槽92、92相連，但亦可相連。如此形成之槽9可抑制於正面片材2上在平面方向上流動之體液之擴散，而可有效地防止液體自衛生棉1之周圍洩漏。 本發明之吸收性物品所具備之吸收體係於中間部M之肌膚對向面側具有厚度較其他部分厚之中高部。於本實施形態之衛生棉1中，如圖1及圖2所示，吸收體4係由吸收性片材形成，具體而言，成為於厚度方向Z上重合有複數層吸收性片材之構造。於衛生棉1中，由吸收性片材形成之吸收體4含有高吸收性聚合物及構成纖維。構成吸收體4之1片吸收性片材具有三維地分散配置之高吸收性聚合物及構成纖維。作為吸收性片材，可較佳地使用經由濕潤狀態之高吸收性聚合物所產生之黏著力或另外添加之接著劑或接著性纖維等黏合劑，使構成纖維間或構成纖維與高吸收性聚合物之間結合並製成為片材狀而得者。再者，所謂吸收性片材係指成形為片材狀之吸收體，與通常使吸收性材料堆積而得之纖維堆積型之構造之吸收體區分開。作為吸收性片材之代表者，可列舉日本專利2963647號所記載之吸收性片材或日本專利2955223號所記載之吸收性片材。 於衛生棉1中，如圖2及圖3所示，吸收體4成為利用吸收性片材形成之多層構造。此處，上述所形成之多層構造可為將複數片吸收性片材重合而形成者，可為將1片吸收性片材疊合而形成者，亦可為將該等複合而形成者。於衛生棉1中，如圖2所示，吸收體4包括於中間部M利用吸收性片材形成之中央吸收性片材42、及覆蓋中央吸收性片材42之本體吸收性片材41。即，衛生棉1之吸收體4形成有包含本體吸收性片材41及中央吸收性片材42之多層構造，且於中間部M形成有中高部43。衛生棉1之吸收體4之多層構造具有於1片本體吸收性片材41之摺疊構造之內部內包有中央吸收性片材42的構造，且該中央吸收性片材42配置於中高部43。 較佳為，於衛生棉1中，如圖1～圖3所示，本體吸收性片材41與衛生棉1相比橫向Y之長度(寬度)較寬，且包含1片片材，將該本體吸收性片材41之沿著縱向X之兩側部朝背面片材3側回折而製成為2層構造，且使其沿著縱向X之兩側緣彼此於橫向Y之中央重合，而形成吸收體4之外形。中央吸收性片材42包含1片俯視矩形形狀之片材，且成為將該中央吸收性片材42於橫向Y上三折而得之3層構造。於將中央吸收性片材42製成為3層構造時，於在縱向X上橫跨中央吸收性片材42之2條彎摺線處，以於自橫向Y之自由端數起第2條彎摺線處朝背面片材3側彎折，進而於自橫向Y之自由端數起之第1條彎摺線處朝正面片材2側彎折，且將橫向Y之自由端配置於3層構造之內部之方式，摺疊成螺旋狀。如此，中央吸收性片材42成為呈螺旋狀三折而得之3層構造。中高部43係將3層構造之中央吸收性片材42夾於2層構造之本體吸收性片材41之間而形成為5層構造。中高部43僅形成於中間部M，而不形成於前方部F及後方部R。如圖2及圖3所示，中高部43之周圍之構成吸收體4之吸收性片材的積層片數為2片，與此相對，中高部43之構成吸收體4之吸收性片材之積層片數較多，為5片，成為厚度較中高部43之周圍大之部分。因此，中高部43成為於中間部M朝正面片材2側(衛生棉1之肌膚對向面側)突出之隆起部。 作為平均每片吸收性片材之厚度，較佳為0.1 mm以上，特佳為0.3 mm以上，又，較佳為2 mm以下，特佳為1.5 mm以下。更具體而言，就獲得利用吸收體4點狀地吸收經血且穿著感良好之吸收性物品之方面而言，較佳為0.1 mm以上且2 mm以下，特佳為0.3 mm以上且1.5 mm以下。 吸收體4之中高部43之厚度較佳為0.7 mm以上，進而較佳為1 mm以上，又，較佳為5 mm以下，進而較佳為4 mm以下，更具體而言，較佳為0.7 mm以上且5 mm以下，進而較佳為1 mm以上且4 mm以下。藉由將中高部43之厚度設為此種範圍，容易兼顧形成有中高部43之中間部M之良好之穿著感與較高之吸收性能。又，於吸收性物品如本實施形態之衛生棉1般具備翼部之情形時，於穿著時容易抑制於中間部M之吸收體之褶皺。又，吸收體之除中高部43以外之中高部43之周圍部分的厚度較佳為0.3 mm以上，進而較佳為0.5 mm以上，又，較佳為3 mm以下，進而較佳為2.5 mm以下，更具體而言，較佳為0.3 mm以上且3 mm以下，進而較佳為0.5 mm以上且2.5 mm以下。就提高較高之吸收性能及向穿著者之活動之追隨性之觀點而言較佳為該範圍。再者，吸收體及吸收性片材之厚度係藉由下述方法而測定。 ＜吸收性片材及吸收體之厚度之測定方法＞ 將作為測定對象物之吸收性片材或吸收體以無皺褶或彎折之方式靜置於水平之位置，測定5 cN/cm2
之荷重下之厚度。本發明之厚度之測定係使用厚度計PEACOCK DIAL UPRIGHT GAUGE SR5-C(OZAKI MFG.C0.LTD.製造)。此時，於厚度計之前端部與測定對象物之測定部分之間，配置俯視圓形或正方形之平板(厚度5 mm左右之壓克力板)，並以荷重成為5 cN/cm2
之方式調整平板之大小。 本發明之吸收性物品所具備之吸收體係於較中高部43更靠縱向X之後方側，具有配置有於縱向X上延伸之後方狹縫R1之後方狹縫區域RS。後方狹縫區域RS係隔著將吸收體4於橫向Y上兩等分地於縱向X上延伸之假想縱中心線即縱中心線CL，於兩側配置一對。於本實施形態之衛生棉1中，如圖1及圖4所示，吸收體4係於較中間部M之中高部43更靠縱向X之後方側，具備於橫向Y上分離之一對後方狹縫區域RSr、RSl，各後方狹縫區域RSr、RSl具有於縱向X上延伸之後方狹縫R1。此處，作為於縱向X上延伸之後方狹縫R1之形狀，意指只要於縱向X上延伸則不僅包含直線，亦包含波浪線、曲線、及虛線等。又，作為於縱向X上延伸之後方狹縫R1之傾斜角度，不僅包含與於縱向X上延伸之縱中心線CL平行地延伸之狹縫，亦包含與和縱中心線CL平行地延伸之假想線所成之角度未達45度之狹縫。但，後方狹縫R1之傾斜角度較佳為未達30度，特佳為未達10度，最佳為0度。各後方狹縫區域RS較佳為至少具有1條此種後方狹縫R1，進而較佳為具有2條以上且18條以下，特佳為具有4條以上且14條以下。於各後方狹縫區域RS具有複數條後方狹縫R1之情形時，可為後方狹縫R1之形狀及傾斜角度全部相同之狹縫，亦可包含一部分不同之狹縫，亦可為全部不同之狹縫。於各後方狹縫區域RS具有複數條後方狹縫R1之情形時，於各後方狹縫區域RS，於縱向X上延伸之狹縫行較佳為於橫向Y上形成2行以上，更佳為3行以上。又，各個狹縫行中所包含之後方狹縫R1之條數較佳為1條以上，更較佳為2條以上。於衛生棉1中，如圖4所示，於各後方狹縫區域RS，於橫向Y上形成有3行在縱向X上延伸之狹縫行，各該狹縫行中所包含之後方狹縫R1之條數為2條。於衛生棉1中，將配置於2行狹縫行之間之狹縫行配置在較該2行狹縫行更靠吸收體4之中高部43側，而形成後方狹縫區域RS。 於衛生棉1中，如圖1及圖4所示，構成一對後方狹縫區域RSr、RSl之各者之後方狹縫R1係相對於縱中心線CL呈左右對稱地配置，而形成一對後方狹縫區域RSr、RSl。而且，於衛生棉1中，各後方狹縫區域RS具有形狀及傾斜角度全部相同之複數條後方狹縫R1。於衛生棉1中，各後方狹縫R1係與縱中心線CL平行地以直線延伸。於衛生棉1中，與縱中心線CL平行地呈直線延伸之後方狹縫R1係以於縱向X及橫向Y之兩方向上分散之狀態配置，而形成後方狹縫區域RS。衛生棉1之後方狹縫R1配置於位於吸收體4之中高部43之周圍之本體吸收性片材41。後方狹縫R1只要貫通2層構造之本體吸收性片材41之至少僅1層便可，但於衛生棉1中，使後方狹縫R1遍及2層構造之本體吸收性片材41之厚度方向Z貫通所有層。 於衛生棉1中，如圖1所示，構成一對後方狹縫區域RSr、RSl之後方狹縫R1中之配置於最接近中高部43之位置者且位於最靠橫向Y之內側之一對近接狹縫R1ar、R1al彼此之橫向Y之間隔d1與中高部43之縱向X之後端部43B之橫向Y的寬度b3相同或大於該寬度b3。此處，構成各後方狹縫區域RS之後方狹縫R1中之配置於最接近中高部43之位置的一對近接狹縫換言之為後方狹縫中之位於最前方側且於橫向Y上隔開地存在之一對狹縫。又，所謂一對後方狹縫R1r、R1l彼此之間隔d2意指於一對後方狹縫R1r、R1l彼此之橫向Y之間隔中最短之間隔。 於衛生棉1中，如圖1及圖4所示，於吸收體4之中間部M具備中高部43，故而向穿著者之液體排泄部之服貼性提高。而且，於衛生棉1中，配置於吸收體4之一對近接狹縫R1ar、R1al彼此之橫向Y的間隔d1與中高部43之後端部43B之寬度b3相同或大於該寬度b3。因此，即便於就寢時採用使身體仰臥之姿勢，藉由自衛生棉1之兩側方向施加力，吸收體4之一對近接狹縫區域RSar、RSal彼此之間之部分亦容易以一對近接狹縫R1ar、R1al為起點朝穿著者側隆起。若一對近接狹縫區域RSar、RSal彼此之間之部分如上所述朝穿著者側呈曲面狀隆起，則儘管不易給穿著者帶來不適感，亦不易於與肌膚之間產生間隙，結果，服貼性提高，體液不易順著肌膚流動，而防漏性提高。就進一步發揮此種效果之觀點而言，較佳為一對近接狹縫R1ar、R1al彼此之橫向Y之間隔d1大於中高部43之後端部43B之寬度b3。 就進一步發揮上述效果之觀點而言，俯視後方狹縫R1時之寬度b1(參照圖4)較佳為0.1 mm以上，進而較佳為0.2 mm以上，又，較佳為1 mm以下，進而較佳為0.8 mm以下，又，較佳為0.1 mm以上且1 mm以下，進而較佳為0.2 mm以上且0.8 mm以下。就相同之觀點而言，俯視後方狹縫R1時之長度(縱向X長度)L1(參照圖4)較佳為10 mm以上，進而較佳為15 mm以上，又，較佳為35 mm以下，進而較佳為25 mm以下，又，較佳為10 mm以上且35 mm以下，進而較佳為15 mm以上且25 mm以下。 就進一步發揮上述效果之觀點而言，於在各後方狹縫區域RSr、RSl分別具有複數條後方狹縫R1之情形時，於橫向Y上最為接近之後方狹縫R1、R1彼此之間隔(寬度方向間隔)d3較佳為3 mm以上，進而較佳為5 mm以上，又，較佳為18 mm以下，進而較佳為15 mm以下，又，較佳為3 mm以上且18 mm以下，進而較佳為5 mm以上且15 mm以下。 於衛生棉1中，一對後方狹縫區域RSr、RSl各自之於橫向Y上位於最內側之後方狹縫R1r、R1l係位於將中高部43之縱向X之後端部之橫向Y的寬度分成5等分時之較中央1區域更靠橫向Y之外側。因此，容易更進一步發揮上述效果。又，配置於橫向Y之間隔最窄之位置之一對後方狹縫R1r、R1l彼此之橫向Y之間隔d2(參照圖1)較佳為較將中高部43之縱向X之後端部43B之橫向Y的寬度分成5等分時之中央1區域之寬度大，進而較佳為較將中高部43之後端部43B之橫向Y的寬度分成3等分時之中央1區域之寬度大。又，於配置有複數條構成各後方狹縫區域RS之後方狹縫R1之情形時，配置於橫向Y之間隔最窄之位置之一對後方狹縫R1r、R1l較佳為與一對近接狹縫R1ar、R1al不同之狹縫，該等一對後方狹縫R1r、R1l彼此之間隔d2(參照圖1)較佳為較一對近接狹縫R1ar、R1al彼此之間隔d1(參照圖1)窄。一對後方狹縫R1r、R1l彼此之間隔d2(參照圖1)意指一對後方狹縫R1r、R1l彼此之橫向Y之間隔中最短之間隔。 再者，於衛生棉1中，藉由矩形之中央吸收性片材42而形成中高部43，故而中高部43之橫向Y之寬度b3為固定。與此相對，於中高部43之後端部與較其更為前方側相比橫向Y之寬度變小之情形時，一對近接狹縫R1ar、R1al之橫向Y之間隔較佳為與將上述中高部43於縱向X上分割為5個部分時之最後側之最後端分割區域的橫向Y之最大長度相同或較其長，且較佳為與自和該最後端分割區域相鄰之後側起第2個鄰接分割區域之橫向Y之最大長度相同或較其長。此處，上述「橫向Y之最大長度」意指俯視中高部43，於橫向Y上最長之位置上之距離。藉由如此，容易更進一步發揮上述效果。 又，於衛生棉1中，一對後方狹縫區域RSr、RSl各自之位於橫向Y之最內側之於橫向Y上相鄰之後方狹縫R1r、R1l間的橫向Y之距離較於橫向Y相鄰之中央狹縫M1、M1間之橫向Y之距離長。因此，中高部43容易沿著中間部M變形，且為了緩衝該變形之影響，後方部R容易變形。因此，容易進一步發揮上述效果。 就進一步發揮上述效果之觀點而言，一對近接狹縫R1ar、R1al彼此之間隔d1(參照圖1)較佳為25 mm以上，進而較佳為30 mm以上，又，較佳為55 mm以下，進而較佳為45 mm以下，又，較佳為25 mm以上且55 mm以下，進而較佳為30 mm以上且45 mm以下。 就進一步發揮上述效果之觀點而言，於配置於橫向Y之間隔最窄之位置之一對後方狹縫R1l、R1r與一對近接狹縫R1ar、R1al不同之情形時，一對後方狹縫R1r、R1l彼此之間隔d2(參照圖1)較佳為8 mm以上，進而較佳為15 mm以上，又，較佳為40 mm以下，進而較佳為30 mm以下，又，較佳為8 mm以上且40 mm以下，進而較佳為15 mm以上且30 mm以下。 又，於衛生棉1中，如圖1及圖4所示，除具有一對後方狹縫區域RSr、RSl以外，於中高部43亦具有在縱向X及橫向Y上分散地配置有在縱向X上延伸之中央狹縫M1之中央狹縫區域MS。此處，所謂於縱向X上延伸之中央狹縫M1，與上述於縱向X上延伸之後方狹縫R1同樣地，意指作為其形狀，只要於縱向X延伸則不僅包含直線，亦包含波浪線、虛線、及曲線等，且意指作為其傾斜角度，不僅包含與於縱向X上延伸之縱中心線CL平行地延伸之狹縫，亦包含和與縱中心線CL平行地延伸之假想線所成之角度未達45度之狹縫。但，傾斜角度較佳為未達30度，特佳為未達10度，最佳為0度。中央狹縫區域MS較佳為具有10條以上且40條以下之此種中央狹縫M1，進而較佳具有20條以上且30條以下之此種中央狹縫M1。於中央狹縫區域MS，於橫向Y上間歇性地配置有在縱向X上延伸之中央狹縫M1之狹縫行較佳為於縱向X上形成3行以上，更佳為4行以上，進而較佳為5行以上。又，各個狹縫行中所包含之中央狹縫M1之條數較佳為2條以上，更佳為3條以上。構成中央狹縫區域MS之複數條中央狹縫M1可為其形狀及傾斜角度全部相同之狹縫，亦可包含一部分不同之狹縫，亦可為全部不同之狹縫。 於衛生棉1中，如圖1所示般進行俯視時，構成各後方狹縫區域RS之後方狹縫R1具有與槽9重合之部分。較佳為，於衛生棉1中，構成各後方狹縫區域RS之複數條後方狹縫R1中之一部分具有與構成槽9之配置於後方部R之縱壓軋槽92或第3壓軋槽94重合之部分。若後方狹縫R1如上所述具有與槽9重合之部分，則藉由槽9及後方狹縫R1之協同效應，衛生棉1之服貼性進一步提高。又，若後方狹縫R1具有與槽9重合之部分，則於該重合之部分，正面片材2容易自後方狹縫R1進入至吸收體4之內部，流動至正面片材2上之體液容易被吸收體4吸收。 於衛生棉1中，各後翼部10H係於其非肌膚對向面具有於縱向X上延伸之防偏移構件即後翼部黏著部10H1。而且，如圖1所示般進行俯視時，構成各後方狹縫區域RS之後方狹縫R1並未配置於較後翼部黏著部10H1之縱向X之後端部更靠後方。換言之，於衛生棉1中，構成各後方狹縫區域RS之複數條後方狹縫R1中之位於最靠縱向X之後方的後方狹縫R1之後端部位於較後翼部黏著部10H1之縱向X之後端部更靠縱向X之前方。若於此種位置配置構成後方狹縫區域RS之後方狹縫R1，則於衛生棉沿著穿著者之身體變形時，後翼部10H容易經由後翼部黏著部10H1而固定於短褲等所穿衣物，故而可抑制因後方狹縫R1引起之皺褶之產生，防漏性提高。 於衛生棉1中，如圖1及圖4所示，除具有一對後方狹縫區域RS以外，於中高部43亦具有在縱向X及橫向Y上分散地配置有在縱向X上延伸之中央狹縫M1之中央狹縫區域MS。因此，藉由中央狹縫M1而使得中央狹縫區域MS容易沿著穿著者之身體變形，衛生棉1之服貼性提高，防漏性及穿著感進一步提高。 就進一步發揮上述效果之觀點而言，俯視中央狹縫M1時之寬度b2(參照圖4)較佳為0.1 mm以上，進而較佳為0.2 mm以上，又，較佳為1 mm以下，進而較佳為0.8 mm以下，又，較佳為0.1 mm以上且1 mm以下，進而較佳為0.2 mm以上且0.8 mm以下。 就進一步發揮上述效果之觀點而言，俯視中央狹縫M1時之長度(縱向X長度)L2(參照圖4)較佳為10 mm以上，進而較佳為15 mm以上，又，較佳為35 mm以下，進而較佳為25 mm以下，又，較佳為10 mm以上且35 mm以下，進而較佳為15 mm以上且25 mm以下。 就進一步發揮上述效果之觀點而言，最為接近之中央狹縫M1、M1彼此之間隔(寬度方向間隔)d4較佳為3 mm以上，進而較佳為7 mm以上，又，較佳為20 mm以下，進而較佳為15 mm以下，又，較佳為3 mm以上且20 mm以下，進而較佳為7 mm以上且15 mm以下。 於衛生棉1中，如圖1及圖4所示，於吸收體4之中間部M之中高部43，與縱中心線CL平行地延伸之中央狹縫M1係於縱向X及橫向Y之兩方向上相對於縱中心線CL呈左右對稱地分散之狀態配置而形成中央狹縫區域MS。衛生棉1之中央狹縫M1只要貫通吸收體4之構成中高部43之5層構造之吸收性片材(2層構造之本體吸收性片材41及3層構造之中央吸收性片材42)中之至少僅1層便可，但衛生棉1中，係遍及5層構造之吸收性片材之厚度方向貫通所有層。 又，如圖1及圖4所示之衛生棉1般，於吸收體4具有一對後方狹縫區域RS及中央狹縫區域MS之情形時，配置於中高部43之縱向X之後端部43B上之狹縫為構成後方狹縫區域RS之後方狹縫R1亦或為構成中央狹縫區域MS之中央狹縫M1之判斷係以如下方式進行判斷。即，俯視吸收體4，以通過中高部43之縱向X之後端部43B之最後端且與橫向Y平行之假想線IL為基準，於要判斷之狹縫之與中高部43之後端部43B重合的部分之縱向X之長度(BL)相對於該狹縫之縱向X之全長(AL)的比率((BL/AL)×100)為10%以下之情形時，判斷為構成後方狹縫區域RS之後方狹縫R1，於大於10%之情形時，判斷為構成中央狹縫區域MS之中央狹縫M1。 又，於衛生棉1中，如圖1及圖4所示，於自橫向Y觀察衛生棉1時，構成中央狹縫區域MS之中央狹縫M1中之位於中央狹縫區域MS之寬度方向(橫向Y)中央側且位於最靠縱向X之後方側的中央最後部狹縫M1a之後端與各後方狹縫區域RS之近接狹縫R1a之前端不重合。中央最後部狹縫M1a之後端與近接狹縫R1a之前端之間的縱向X之間隔d5(參照圖4)較佳為20 mm以下，進而較佳為15 mm以下，又，較佳為0 mm以上且20 mm以下，進而較佳為0 mm以上且15 mm以下。若為該範圍，則因於穿著中自衛生棉1之兩側方向施加力，吸收體4之一對近接狹縫R1ar、CR1al彼此之間之部分進而容易以一對近接狹縫R1ar、R1al為起點，朝穿著者側呈曲面狀隆起。 中央最後部狹縫M1a之後端與近接狹縫R1a之前端之間的縱向X之間隔d5(參照圖4)較佳為較後方狹縫R1之長度(縱向X長度)L1(參照圖4)及中央狹縫M1之長度(縱向X長度)L2(參照圖4)中之至少一者短。 對上述本實施形態之衛生棉1之各構成構件之形成材料進行說明。 作為正面片材2、背面片材3，可無特別限制地使用經期衛生棉等吸收性物品中先前所使用之各者片材等。例如，作為正面片材2，可使用單層或多層構造之不織布、或開孔膜等。又，作為背面片材3，可使用透濕性之樹脂膜等。又，作為防漏翻邊形成用片材，可使用耐水壓較高之撥水性之不織布、例如紡黏不織布、紡黏-熔噴-紡黏積層不織布等。 作為吸收體4所具有之高吸收性聚合物，通常使用粒子狀者，但亦可為纖維狀者。於使用粒子狀之高吸收性聚合物之情形時，其形狀亦可為球狀、塊狀、袋狀或不定形狀中之任一者。作為高吸收性聚合物，通常可使用丙烯酸或丙烯酸鹼金屬鹽之聚合物或共聚物。作為其例，可列舉聚丙烯酸及其鹽、以及聚甲基丙烯酸及其鹽。作為聚丙烯酸鹽或聚甲基丙烯酸鹽，可較佳地使用鈉鹽。又，亦可使用使丙烯酸或甲基丙烯酸與馬來酸、伊康酸、丙烯醯胺、2-丙烯醯胺-2-甲基丙磺酸、2-(甲基)丙烯醯基乙磺酸、(甲基)丙烯酸2-羥基乙酯或苯乙烯磺酸等共聚單體於不使高吸收性聚合物之性能降低之範圍內進行共聚而成之共聚物。 作為吸收體4所具有之構成纖維，可列舉合成纖維或纖維素系纖維等。作為合成纖維，例如較佳為熱塑性纖維。作為熱塑性纖維，例如可列舉使用聚乙烯、聚丙烯、聚酯、聚胺基甲酸酯等單一之合成樹脂而形成之單一纖維、或使用該等2種以上之複合體等合成樹脂而形成之複合纖維。作為纖維素系纖維，可列舉藉由適當之交聯劑使纖維素之分子內或分子間交聯而得之交聯纖維素纖維(紙漿纖維)、或使纖維素之結晶度提高而得之嫘縈纖維等再生纖維素纖維等。 於衛生棉1中，正面片材2與吸收體4之間、及吸收體4與背面片材3之間較佳為塗佈接著劑而固定。接著劑可使用公知之機構、例如狹縫式塗佈槍、螺旋噴槍、噴槍、或點槍進行塗佈，於衛生棉1中，較佳為使用螺旋噴槍呈螺旋狀進行塗佈。作為所塗佈之接著劑，例如較佳地使用熱熔接著劑。熱熔接著劑之塗佈量較佳為1.5 g/m2
以上且10 g/m2
以下。 以上，將本發明基於其較佳之實施形態進行了說明，但本發明之吸收性物品不受上述實施形態之衛生棉1任何限制，可適當變更。 例如，於衛生棉1中，如圖4所示，於吸收體4之各後方狹縫區域RS，於縱向X上延伸之狹縫行在橫向Y上形成有3行，各該狹縫行中所包含之後方狹縫R1之條數為2條，且如圖5所示之吸收體4般，於各後方狹縫區域RS，於縱向X上延伸之狹縫行在橫向Y上形成有3行，中央之狹縫行中所包含之後方狹縫R1之條數為2條，位於中央之狹縫行之兩側之兩側狹縫行中所包含之後方狹縫R1之條數成為1條。關於圖5所示之吸收體4，主要說明與上述衛生棉1不同之構成部分，相同之構成部分係附上相同之符號並省略說明。未作特別說明之構成部分適當應用關於圖4所示之吸收體4之說明。只要為具有圖5所示之吸收體4之經期衛生棉，則發揮與圖1所示之衛生棉1相同之效果。 又，於衛生棉1中，如圖3所示，吸收體4係由吸收性片材形成，但亦可並非為吸收性片材，而為利用包芯片材被覆包含經纖維堆積之紙漿纖維之吸收性芯體之肌膚對向面及非肌膚對向面而得的纖維堆積型之吸收體。 又，本發明之吸收性物品除經期衛生棉以外，亦可為衛生護墊(陰道分泌物護墊)等。 關於上述本發明之實施形態，進而揭示以下之吸收性物品。 ＜1＞ 一種吸收性物品，其具備與穿著者之前後方向對應之縱向及與該縱向正交之橫向，且具有吸收體，且沿著該縱向具有前方部、中間部及後方部，上述吸收體係於上述中間部之肌膚對向面側，具有厚度較其他部分厚之中高部，上述吸收體係於較上述中高部更靠後方側，具有配置有於上述縱向上延伸之後方狹縫之後方狹縫區域，該後方狹縫區域係隔著將上述吸收體於上述橫向上兩等分地於上述縱向上延伸之假想縱中心線，於兩側配置一對，構成一對上述後方狹縫區域之上述後方狹縫中之配置於最接近上述中高部之位置且位於最靠橫向之內側的近接狹縫彼此之橫向之間隔係與該中高部之縱向之後端部之橫向的寬度相同或大於該寬度。 ＜2＞ 如上述＜1＞之吸收性物品，其中上述近接狹縫之橫向之間隔係與將上述中高部於縱向上分割為5個部分時之最後側之1個部分之橫向的最大長度相同或較其長。 ＜3＞ 如上述＜1＞或＜2＞之吸收性物品，其中上述吸收體係於上述中高部具有於縱向及橫向上分散地配置有在縱向上延伸之中央狹縫之中央狹縫區域。 ＜4＞ 如上述＜3＞之吸收性物品，其中自橫向觀察上述吸收性物品，構成上述中央狹縫區域之上述中央狹縫中之位於最靠後方側之中央最後部狹縫的後端與各上述後方狹縫區域之上述近接狹縫之前端不重合。 ＜5＞ 如上述＜3＞或＜4＞之吸收性物品，其中位於上述一對後方狹縫區域各自之橫向之最內側的在橫向上相鄰之後方狹縫間之橫向之距離長於在橫向上相鄰之上述中央狹縫間之橫向Y之距離。 ＜6＞ 如上述＜1＞至＜5＞中任一項之吸收性物品，其中上述一對後方狹縫區域各自之位於橫向之最內側之上述後方狹縫係位於將上述中高部之縱向之後端部之橫向的寬度分成5等分時之較中央1區域更靠橫向之外側。 ＜7＞ 如上述＜1＞至＜6＞中任一項之吸收性物品，其中上述吸收性物品具備夾持上述吸收體之正面片材及背面片材，且於肌膚對向面具備上述正面片材及上述吸收體成為一體之於上述背面片材側具有底部之槽，俯視上述吸收性物品，構成各上述後方狹縫區域之上述後方狹縫具有與上述槽重合之部分。 ＜8＞ 如上述＜1＞至＜7＞中任一項之吸收性物品，其中上述吸收性物品具有吸收性本體，該吸收性本體具備上述吸收體、及夾持該吸收體之正面片材及背面片材，於該吸收性本體之較上述中間部更靠後方，具有分別自該吸收性本體之沿著縱向之兩側部朝橫向之外側延出之一對後翼部，各上述後翼部係於非肌膚對向面具有於縱向上延伸之防偏移構件，俯視上述吸收性物品，構成各上述後方狹縫區域之上述後方狹縫並未配置於較上述防偏移構件之縱向之後端部更靠後方。 ＜9＞ 如上述＜1＞至＜8＞中任一項之吸收性物品，其中上述後方狹縫之形狀為直線、波浪線、曲線或虛線。 ＜10＞ 如上述＜1＞至＜9＞中任一項之吸收性物品，其中上述後方狹縫與於縱向上平行地延伸之上述假想縱中心線所成之角度未達45度，較佳為未達30度，進而較佳為未達10度。 ＜11＞ 如上述＜1＞至＜10＞中任一項之吸收性物品，其中上述後方狹縫係沿著縱向延伸。 ＜12＞ 如上述＜1＞至＜11＞中任一項之吸收性物品，其中於各上述後方狹縫區域，於縱向上延伸之狹縫行較佳為在橫向上存在2行以上，更佳為存在3行以上。 ＜13＞ 如上述＜1＞至＜12＞中任一項之吸收性物品，其中於各上述後方狹縫區域，於縱向上延伸之狹縫行較佳為在橫向上存在2行以上，更佳為存在3行以上，各個上述狹縫行中所包含之後方狹縫較佳為1條以上，更佳為2條以上。 ＜14＞ 如上述＜1＞至＜13＞中任一項之吸收性物品，其中俯視上述後方狹縫時之寬度為0.1 mm以上且1 mm以下，較佳為0.2 mm以上且0.8 mm以下。 ＜15＞ 如上述＜1＞至＜14＞中任一項之吸收性物品，其中俯視上述後方狹縫時之縱向長度為10 mm以上且35 mm以下，較佳為15 mm以上且25 mm以下。 ＜16＞ 如上述＜1＞至＜15＞中任一項之吸收性物品，其中於在上述一對後方狹縫區域分別具有複數條上述後方狹縫之情形時，於橫向上最為接近之後方狹縫彼此之橫向之間隔為3 mm以上且18 mm以下，較佳為5 mm以上且15 mm以下。 ＜17＞ 如上述＜1＞至＜16＞中任一項之吸收性物品，其中上述吸收體係於上述中高部具有於縱向及橫向上分散地配置有在縱向上延伸之中央狹縫之中央狹縫區域，構成該中央狹縫區域之上述中央狹縫中之位於上述中央狹縫區域之橫向的中央側且位於最靠縱向之後方之中央最後部狹縫的後端與上述近接狹縫之前端自橫向觀察不重合。 ＜18＞ 如上述＜1＞至＜17＞中任一項之吸收性物品，其中上述中央最後部狹縫之後端與上述近接狹縫之前端之間的縱向之間隔為0 mm以上且20 mm以下，較佳為0 mm以上且15 mm以下。 ＜19＞ 如上述＜1＞至＜18＞中任一項之吸收性物品，其中上述吸收體係利用吸收性片材形成之多層構造。 ＜20＞ 如上述＜19＞之吸收性物品，其中上述多層構造係將複數片該吸收性片材重合而形成者，或為將1片吸收性片材疊合而形成者。 ＜21＞ 如上述＜1＞至＜20＞中任一項之吸收性物品，其中上述吸收體包括於上述中間部利用吸收性片材形成之中央吸收性片材、及覆蓋該中央吸收性片材之本體吸收性片材，該中央吸收性片材配置於上述中高部。 ＜22＞ 如上述＜1＞至＜21＞中任一項之吸收性物品，其中上述吸收體之上述中高部之厚度為0.7 mm以上且5 mm以下，較佳為1 mm以上且4 mm以下。 ＜23＞ 如上述＜1＞至＜22＞中任一項之吸收性物品，其中上述吸收體之除上述中高部以外之該中高部之周圍部分之厚度為0.3 mm以上且3 mm以下，較佳為0.5 mm以上且2.5 mm以下。 ＜24＞ 如上述＜1＞至＜23＞中任一項之吸收性物品，其中上述吸收性物品為經期衛生棉。 [實施例] 以下，藉由實施例進而詳細地說明本發明之吸收性物品。然而，本發明之範圍不受該實施例任何限制。 ＜實施例1＞ 製作具有與具有圖4所示之吸收體之圖1～圖3所示之經期衛生棉相同之基本構成之經期衛生棉，並將其設為實施例1之樣品。作為正面片材，使用基重25 g/m2
之紡黏不織布。作為背面片材，使用基重35 g/m2
之透濕性之樹脂膜。作為防漏翻邊形成用片材，使用基重25 g/m2
之紡黏不織布。作為構成吸收體之吸收性片材，依照日本專利2963647號之實施例2而製成。作為平均每片吸收性片材之厚度，為0.5 mm，吸收體之中高部之厚度為2.3 mm，中高部之後端部之橫向寬度為35 mm。再者，中高部為矩形。 配置於吸收體之狹縫之詳情係如下所述。 關於構成各後方狹縫區域RS之後方狹縫R1，其寬度b1為0.5 mm，其長度L1為20 mm，最為接近之後方狹縫R1、R1彼此之間隔d3為7 mm。 一對近接狹縫R1ar、R1al彼此之間隔d1為38 mm，一對後方狹縫R1r、R1l彼此之間隔d2為24 mm。 關於構成中央狹縫區域MS之中央狹縫M1，其寬度b2為0.5 mm，其長度L2為20 mm，最為接近之中央狹縫M1、M1彼此之間隔d4為6 mm。 中央最後部狹縫M1a之後端與近接狹縫R1a之前端之間的縱向X之間隔d5為0 mm。 ＜實施例2＞ 製作除代替圖4所示之吸收體而使用圖5所示之吸收體以外，具有與實施例1中所製成之樣品相同之基本構成之經期衛生棉，並將其設為實施例2之樣品。配置於圖5所示之吸收體之狹縫之詳情係如下所述。 中高部43為矩形，配置於吸收體之一對近接狹縫R1ar、R1al彼此之橫向Y之間隔d1為與該中高部43之後端部43B之寬度b1相同之35 mm。 關於構成各後方狹縫區域RS之後方狹縫R1，其寬度b1為0.5 mm，其長度L1為20 mm，最為接近之後方狹縫R1、R1彼此之間隔d2為7 mm。 一對近接狹縫R1ar、R1al彼此之間隔d1為38 mm，一對後方狹縫R1r、R1l彼此之間隔d2為24 mm。 關於構成中央狹縫區域MS之中央狹縫M1，其寬度b2為0.5 mm，其長度L2為20 mm，最為接近之中央狹縫M1、M1彼此之間隔d4為6 mm。 中央最後部狹縫M1a之後端與近接狹縫R1a之前端之間的縱向X之間隔d5為0 mm。 ＜比較例1＞ 製作除代替圖4所示之吸收體而使用自圖4所示之吸收體去除一對後方狹縫區域RS而得之吸收體以外，具有與實施例1中所製成之樣品相同之基本構成之經期衛生棉，並將其設為比較例1之樣品。 [評價] 對於實施例1～2之樣品(經期衛生棉)及比較例1之樣品(經期衛生棉)，藉由下述方法測定縱向之假血之擴散距離。將其等之結果示於下述表1。 ＜縱向之假血之擴散距離之測定方法＞ 使用可自排泄點注入液體之女性用下半身之人體模型，於使該模型以直立之狀態穿著評價對象之樣品之後，使該模型為仰面躺下之狀態。繼而，使用具速度調整功能之液體排出泵，自排泄點每隔1分鐘注入3.0 g假血(馬血液)，合計注入6 g及9 g。自剛注入6 g之後經過1分鐘後，自該模型卸下樣品，對藉由注入假血(馬血液)而於樣品產生之正面片材及吸收體各自之縱向之擴散距離進行3次測定，將其平均值設為縱向之假血(馬血液)之擴散距離。認為於正面片材及吸收體中之任一者中，該體液之擴散距離越短，於經期衛生棉與穿著者之肌膚之間越不易產生間隙，體液越不易順著肌膚流動，而評價較高。 再者，使用脫纖維馬血(Nippon Biotest(股)製造)作為假血。 [表1]
如表1所示，可知實施例1～2之經期衛生棉與比較例1之經期衛生棉相比，正面片材中之假血(馬血液)之縱向之擴散距離、及吸收體中之假血(馬血液)之縱向之擴散距離均較小。據此，與比較例1之經期衛生棉相比，實施例1～2之經期衛生棉可期待於穿著中與肌膚之間不易產生間隙，服貼性提高，體液不易順著肌膚流動，而防漏性提高。 [產業上之可利用性] 根據本發明之吸收性物品，服貼性提高，體液不易順著肌膚流動，而防漏性提高。The present inventors have discovered that when the body is placed on the back when sleeping, the normal night-time menstrual tampon is closer to the draining portion facing portion than the wearer's liquid draining portion. A gap is easily generated in the rear. When a large amount of menstrual blood is excreted at one time, menstrual blood easily flows along the skin, causing leakage. In response to such leakage, if the absorbent article of Patent Document 1 is worn, the conformability is improved by the rear slit region. Therefore, although it has a fixed effect, it is high among absorbers disposed in the central slit region. There is a difference in rigidity between the part and the part between the middle and high part and the rear slit forming the rear slit area, which may cause a gap between the absorbent article and the skin. Therefore, the absorbent article of Patent Document 1 is improved. Room. In addition, if the absorbent article described in Patent Document 2 is worn, the area behind the absorbent body is deformed into a shape bent toward the wearer's skin with the through-holes as the starting point when worn, which causes discomfort to the wearer. Therefore, an object of the present invention is to provide an absorbent article which can eliminate the disadvantages of the aforementioned prior art. Hereinafter, the absorbent article of the present invention will be described with reference to drawings based on the menstrual tampon 1 (hereinafter also referred to as "tampon 1") as a preferred embodiment. The sanitary napkin 1 includes a longitudinal direction X corresponding to the wearer's front and rear directions and a transverse direction Y orthogonal to the longitudinal direction X, and has an absorbent body 4. The sanitary napkin 1 has a front portion F, a middle portion M, and a rear portion R along the longitudinal direction X. The sanitary napkin 1 shown in FIGS. 1 to 3 is a night sanitary napkin suitable for use at bedtime. FIG. 1 shows a plan view of the sanitary napkin 1 as viewed from the side facing the skin, and FIG. 2 and FIG. 3 show sectional views of the sanitary napkin 1. In addition, FIG. 4 shows a plan view of the absorbent body 4 included in the sanitary napkin 1 as viewed from the skin-facing side. In this embodiment, as shown in FIGS. 1 to 3, the sanitary napkin 1 includes an absorbent body 10 including an absorbent body 4, a front sheet 2 and a back sheet 3 that sandwich the absorbent body 4. In other words, the absorbent body 10 has a liquid-permeable front sheet 2 that forms the skin-facing surface, a back sheet 3 that forms the non-skin-facing surface, and an absorbent body 4 that is between the two sheets 2, 3 rooms. In this embodiment, the absorbent body 4 of the sanitary napkin 1 is formed of an absorbent sheet. Specifically, as shown in FIG. 2 and FIG. 3, it has a structure in which a plurality of layers of absorbent sheets are superposed in the thickness direction. In the sanitary napkin 1, the absorbent body 4 formed of an absorbent sheet contains a superabsorbent polymer and constituent fibers. As shown in FIG. 1, the absorbent body 10 of the sanitary napkin 1 includes: an intermediate portion M, which includes an excretory portion opposed to the wearer's excretory portion, that is, a vaginal opening, when worn, and an anterior portion F, which is disposed The rear portion R is disposed closer to the wearer's rear side than the middle portion M; and the rear portion R is disposed longer to the front and rear directions than the middle portion M. The sanitary napkin 1 and the absorbent body 10 have a longitudinal direction X corresponding to the front-back direction of the wearer, a transverse direction Y orthogonal to the longitudinal direction X, and a thickness direction Z. That is, the absorbent body 10 has a front portion F, a middle portion M, and a rear portion R along the longitudinal direction X, that is, the longitudinal direction X, and is divided in this order. In addition, the sanitary napkin 1 is left-right symmetrical with respect to the longitudinal centerline CL, which is an imaginary bisector that passes through the transverse Y center of the sanitary napkin 1 and extends in the longitudinal direction X. In this specification, the skin-facing surface is the sanitary napkin 1 or its constituent members (for example, the front sheet 2). The surface facing the wearer's skin when the sanitary napkin 1 is worn, and the non-skin-facing surface is sanitary. The surface of the cotton 1 or the constituent member thereof facing the skin (wearing side) opposite to the skin side when the sanitary napkin 1 is worn. In addition, the longitudinal direction X coincides with the longitudinal direction of the sanitary napkin 1 and the absorbent body 10, and the transverse direction Y coincides with the width direction (the direction orthogonal to the longitudinal direction) of the sanitary napkin 1 and the absorbent body 10. In this embodiment, as shown in FIGS. 1 and 3, in addition to the absorbent body 10, the sanitary napkin 1 also has a pair of rear wing portions 10H and 10H. The pair of rear wing portions 10H and 10H are for absorption. The rear body R is more rearward than the middle portion M, that is, the rear portion R, and extends from both sides of the absorbent body 10 along the longitudinal direction X to the outer side of the lateral direction Y. As shown in FIGS. 1 and 2, the sanitary napkin 1 includes a pair of wing portions 10W and 10W. The pair of wing portions 10W and 10W are respectively along the longitudinal direction of the middle portion M of the self-absorbent body 10. Both sides of X extend outward from the lateral Y. Furthermore, in the absorbent article of the present invention, the "middle portion M" means a region having a wing portion 10W in the longitudinal direction X (a wing portion) when the wing portion 10W is provided as in the sanitary napkin 1 of this embodiment. The area between the root of 10W along the longitudinal X and the root of the other wing 10W along the longitudinal X). In addition, it means that in the case of an absorbent article without wings, the bending line (not shown) across the absorbent article in the transverse direction Y generated when the absorbent article is folded in a single packaging form, The area surrounded by the first bend line and the second bend line from the front end of the longitudinal direction X of the absorbent article. In the sanitary napkin 1 of this embodiment, as shown in FIG. 1 to FIG. 3, the front sheet 2 covers the entire area of the skin facing surface of the absorbent body 4. On the other hand, the back sheet 3 covers the entire area of the non-skin facing surface of the absorbent body 4, and further extends from the side edges of the front sheet 2 along the longitudinal direction X to the outer side of the transverse direction Y, and prevents The sheet | seat 5 for burring formation also forms the side flap part 10S. The sheet 5 and the back sheet 3 which are fixed to the skin-opposing face of the front sheet 2 are opposite to the edge portions of the absorbent body 4 from both ends of the longitudinal direction X. Sealing, ultrasonic sealing, and other known joining means are used to join each other. Further, each of the front sheet 2 and the back sheet 3 may be bonded to the absorbent body 4 by an adhesive. In the sanitary napkin 1, as shown in FIG. 1 to FIG. 3, the leak-proof cuff-forming sheet 5 is arranged and fixed to the skin-facing side of the front sheet 2 arranged on the skin-facing side of the absorbent body 10. Both sides along the longitudinal direction X. Preferably, the leakage preventing flanging forming sheet 5 is arranged so as to overlap with the left and right sides of the absorbent body 4 along the longitudinal direction X in a plan view, and is arranged and fixed over the entire length of the longitudinal direction X of the absorbent body 10. The leak-proof burr formation sheet 5 may, for example, be folded back on the free end side, and an elastic member for leak-proof burr formation may be disposed inside the folded-back portion formed after the fold-back. If the elastic member for leak-proof burr formation is arranged in this way, the leak-proof burr with the folded-back portion facing the wearer's skin side is formed by the shrinkage force of the elastic member for leakage-proof burr formation. If the leak-proof flange is formed in this way, the side leakage of menstrual blood excreted to the opposite side of the skin can be prevented. In the sanitary napkin 1, as shown in FIG. 1, the side wing portion 10S is protruded from the middle portion M toward the outside of the lateral Y, thereby extending one side of the absorbent body 10 along the left and right along the longitudinal X. To the wings 10W, 10W. Also, as shown in FIG. 1, the side wing portion 10S protrudes from the rear portion R toward the outside of the lateral Y, thereby extending a pair of rear wing portions along the left and right sides of the absorbent body 10 along the longitudinal direction X. 10H, 10H. The wings 10W are folded back toward the non-skin-facing side of the crotch of clothes worn by shorts and the like, and the user. In the sanitary napkin 1, as shown in FIG. 1, the wing portion 10W has a generally trapezoidal shape with a lower bottom (a side longer than the upper bottom) located on a side portion of the absorbent body 10 along the longitudinal direction X in a plan view. On the non-skin facing surface of the wing portion 10W, a wing portion adhesive portion 10W1 is provided as an anti-offset member for fixing the wing portion 10W (sanitary napkin 1) to clothing (not shown) worn by shorts and the like. The wing portion adhesive portion 10W1 can be used to adhere and fix the wing portion 10W folded back toward the non-skin facing surface (outer surface) side of the crotch portion of the clothes to be worn. The wing part adhesive part 10W1 is arrange | positioned so that it may extend to the longitudinal direction X. In the sanitary napkin 1, the shape of the wing portion adhesive portion 10W1 is a long rectangle in the longitudinal direction X and extends parallel to the longitudinal centerline CL. In addition, a non-skin facing surface of the absorbent body 10 is formed with a body adhesive portion (not shown) for fixing the absorbent body 10 to clothes worn by shorts and the like. The rear wing portion 10H is disposed on the skin-facing side of the clothing worn by shorts and the like when worn. On the non-skin facing surface of the rear wing portion 10H, a rear wing adhesive portion 10H1 is provided as an anti-offset member for fixing the rear wing portion 10H to clothing (not shown) worn by shorts or the like. The wing portion adhesive portion 10H1 allows the rear wing portion 10H to adhere and be fixed to the skin-opposing surface (inner surface) of the clothing to be worn during use. The rear wing portion adhesive portion 10H1 is arranged so as to extend in the longitudinal direction X. In the sanitary napkin 1, the shape of the rear wing portion adhesive portion 10H1 is a long rectangle in the longitudinal direction X, and extends parallel to the longitudinal centerline CL. As shown in FIGS. 1 to 3, the sanitary napkin 1 includes a front sheet 2 and a back sheet 3 that sandwich the absorbent body 4, and a front sheet 2 and an absorbent body 4 that are integrated on the skin-opposing surface and are integrated on the back sheet. The material 3 has a bottom groove 9. Specifically, the skin-facing surface of the absorbent body 10 (the skin-facing surface of the front sheet 2) is provided with a linear groove in which the front sheet 2 and the absorbent body 4 are integrally recessed toward the back sheet 3 side. 9. Therefore, the grooves 9 are grooves for the front sheet 2 and the absorber 4 having a higher density of each fiber as a constituent member than the density of the peripheral portions of the grooves. The “linear shape” in the linear groove 9 means that the shape of the groove (recessed portion) is not limited to a straight line in plan view, and also includes a curve. Furthermore, each line may be a continuous line or a non-continuous line such as a dotted line. For example, the grooves 9 may also include rows formed by non-continuous dot embossing. In the sanitary napkin 1, when viewed in plan as shown in FIG. 1, the groove 9 includes: a first transverse rolling groove 91 that extends in the transverse direction Y at the front portion F and the rear portion R, respectively; and a longitudinal rolling groove 92 It extends in the longitudinal direction X on both sides of the longitudinal direction X of the sanitary napkin 1 throughout the front section F, the middle section M and the rear section R. In the sanitary napkin 1, the first lateral rolling grooves 91 of the front portion F and the rear portion R are formed in a convex curved shape toward the outside of the longitudinal direction X, and extend in the lateral direction Y. In the sanitary napkin 1, the first transverse rolling groove 91 in the front portion F, the longitudinal rolling groove 92 in one side, the first transverse rolling groove 91 in the rear portion R, and the other longitudinal rolling groove 92 are formed by being connected to each other. Full-circle groove. Moreover, in the sanitary napkin 1, the groove 9 is located in the front part F, and is further inside the longitudinal X than the first transverse rolling groove 91, and has a second transverse rolling groove 93 extending in the transverse Y. Further, in the sanitary napkin 1, the groove 9 is located in the rear portion R and is surrounded by a pair of the longitudinal rolling grooves 92 and 92 and the first lateral rolling groove 91 of the rear portion R, and has a side facing the outside of the longitudinal direction X. A third rolling groove 94 extending in a convex curved shape is formed. Furthermore, in the sanitary napkin 1, the second lateral rolling grooves 93 and the third rolling grooves 94 are not connected to the pair of vertical rolling grooves 92 and 92 as shown in FIG. 1, but they may be connected. The grooves 9 formed in this way can suppress the diffusion of the body fluid flowing in the planar direction on the front sheet 2, and can effectively prevent the liquid from leaking from around the sanitary napkin 1. The absorptive system provided in the absorbent article of the present invention has a thicker middle-high portion on the skin facing surface side of the middle portion M than the other portions. In the sanitary napkin 1 according to this embodiment, as shown in FIGS. 1 and 2, the absorbent body 4 is formed of an absorbent sheet, and specifically has a structure in which a plurality of absorbent sheets are superposed in the thickness direction Z. . In the sanitary napkin 1, the absorbent body 4 formed of an absorbent sheet contains a superabsorbent polymer and constituent fibers. One absorbent sheet constituting the absorbent body 4 has a highly absorbent polymer and constituent fibers which are three-dimensionally dispersedly arranged. As the absorptive sheet, it is preferable to use the adhesive force generated by the superabsorbent polymer in a wet state, or an adhesive such as an adhesive or an adhesive fiber added separately, so that the constituent fibers or the constituent fibers have high absorbency. The polymers are combined and made into a sheet shape. The absorbent sheet refers to an absorbent body formed into a sheet shape, and is distinguished from an absorbent body having a fiber-stacked structure obtained by stacking absorbent materials. Examples of the absorbent sheet include an absorbent sheet described in Japanese Patent No. 2963647 or an absorbent sheet described in Japanese Patent No. 2955223. In the sanitary napkin 1, as shown in FIGS. 2 and 3, the absorbent body 4 has a multilayer structure formed of an absorbent sheet. Here, the multilayer structure formed above may be formed by overlapping a plurality of absorbent sheets, may be formed by stacking one absorbent sheet, or may be formed by compounding these. In the sanitary napkin 1, as shown in FIG. 2, the absorbent body 4 includes a central absorbent sheet 42 formed of an absorbent sheet in the middle portion M, and a main absorbent sheet 41 covering the central absorbent sheet 42. That is, the absorbent body 4 of the sanitary napkin 1 has a multilayer structure including a main absorbent sheet 41 and a central absorbent sheet 42, and a middle high portion 43 is formed in the middle portion M. The multilayer structure of the absorbent body 4 of the sanitary napkin 1 has a structure in which a central absorbent sheet 42 is enclosed inside a folded structure of one body absorbent sheet 41, and the central absorbent sheet 42 is disposed at the middle and high portion 43. . Preferably, in the sanitary napkin 1, as shown in FIG. 1 to FIG. 3, the body absorbent sheet 41 has a wider width (length) in the transverse direction Y than the sanitary napkin 1, and includes one sheet. The two sides of the body absorbent sheet 41 along the longitudinal direction X are folded back toward the back sheet 3 side to form a two-layer structure, and the edges of both sides along the longitudinal direction X are overlapped with each other in the center of the transverse direction Y to form The absorbent body 4 is shaped. The central absorbent sheet 42 includes one sheet having a rectangular shape in plan view, and has a three-layer structure obtained by trifolding the central absorbent sheet 42 in the lateral direction Y. When the central absorbent sheet 42 is formed into a three-layer structure, at the two bend lines across the central absorbent sheet 42 in the longitudinal direction X, the second bend line from the number of free ends in the transverse direction Y Bend toward the back sheet 3 side, and then bend toward the front sheet 2 side at the first bend line from the free end of the transverse Y, and arrange the free end of the transverse Y in the 3-layer structure Way, folded into a spiral. In this way, the central absorbent sheet 42 has a three-layer structure obtained by tri-folding in a spiral shape. The middle and high portion 43 is formed into a five-layer structure by sandwiching a central absorbent sheet 42 having a three-layer structure between a main absorbent sheet 41 having a two-layer structure. The middle high portion 43 is formed only in the middle portion M, and is not formed in the front portion F and the rear portion R. As shown in FIG. 2 and FIG. 3, the number of laminated sheets of the absorbent sheet constituting the absorbent body 4 around the middle-high section 43 is two. The number of laminated sheets is relatively large, being five, and the thickness becomes larger than that of the surroundings of the mid-high portion 43. Therefore, the middle-high portion 43 is a raised portion protruding from the middle portion M toward the front sheet 2 side (the skin-opposing surface side of the sanitary napkin 1). The average thickness of each absorbent sheet is preferably 0.1 mm or more, particularly preferably 0.3 mm or more, more preferably 2 mm or less, and particularly preferably 1.5 mm or less. More specifically, in terms of obtaining an absorbent article that absorbs menstrual blood in a 4-point manner by the absorber and has a good wearing feeling, it is preferably 0.1 mm or more and 2 mm or less, and particularly preferably 0.3 mm or more and 1.5 mm or less. . The thickness of the middle portion 43 of the absorbent body 4 is preferably 0.7 mm or more, further preferably 1 mm or more, more preferably 5 mm or less, still more preferably 4 mm or less, and more specifically, 0.7 mm or more and 5 mm or less, and more preferably 1 mm or more and 4 mm or less. By setting the thickness of the middle high portion 43 to such a range, it is easy to achieve both good wearing feeling and high absorption performance of the middle portion M where the middle high portion 43 is formed. Moreover, when the absorbent article is provided with a wing part like the sanitary napkin 1 of this embodiment, it is easy to suppress the wrinkles of the absorber in the middle part M at the time of wearing. In addition, the thickness of the surrounding portion of the mid-high portion 43 other than the mid-high portion 43 of the absorbent body is preferably 0.3 mm or more, further preferably 0.5 mm or more, more preferably 3 mm or less, and still more preferably 2.5 mm or less. More specifically, it is preferably 0.3 mm or more and 3 mm or less, and further preferably 0.5 mm or more and 2.5 mm or less. This range is preferable from the viewpoint of improving higher absorption performance and followability to wearer activity. In addition, the thickness of an absorber and an absorbent sheet was measured by the following method. <Method for measuring thickness of absorbent sheet and absorbent body> The absorbent sheet or absorbent body as a measurement object is placed at a horizontal position without wrinkles or bending, and measured at 5 cN / cm 2 Thickness under load. The thickness of the present invention is measured using a thickness gauge PEACOCK DIAL UPRIGHT GAUGE SR5-C (manufactured by OZAKI MFG.C0.LTD.). At this time, a circular or square flat plate (acrylic plate with a thickness of about 5 mm) is arranged between the front end of the thickness meter and the measurement part of the measurement object, and the load becomes 5 cN / cm. 2 Way to adjust the size of the tablet. The absorptive system provided in the absorbent article of the present invention is located behind the longitudinal X side than the mid-high portion 43 and has a rear slit region RS arranged behind the longitudinal slit R1 extending in the longitudinal X direction. The rear slit region RS is provided with a pair of longitudinal centerlines CL, which are imaginary longitudinal centerlines that extend the absorbent body 4 in the horizontal direction Y in two directions in the longitudinal direction X, on both sides. In the sanitary napkin 1 of this embodiment, as shown in FIG. 1 and FIG. 4, the absorbent body 4 is located on the rear side of the longitudinal X side than the mid-high portion 43 of the middle portion M, and is provided with a pair of rear portions separated in the transverse Y direction. The slit regions RSr and RS1, and the rear slit regions RSr and RS1 each have a rear slit R1 extending in the longitudinal direction X. Here, the shape of the square slit R1 after extending in the longitudinal direction X means that as long as it extends in the longitudinal direction X, it includes not only straight lines, but also wavy lines, curves, and dotted lines. The inclination angle of the square slit R1 after extending in the longitudinal direction X includes not only a slit extending parallel to the longitudinal centerline CL extending in the longitudinal direction X, but also an imaginary extension extending parallel to the longitudinal centerline CL. The angle formed by the line does not reach a slit of 45 degrees. However, the inclination angle of the rear slit R1 is preferably less than 30 degrees, particularly preferably less than 10 degrees, and most preferably 0 degrees. Each rear slit region RS preferably has at least one such rear slit R1, more preferably has two or more and 18 or less, and particularly preferably has four or more and 14 or less. In the case where each of the rear slit regions RS has a plurality of rear slits R1, the rear slits R1 may be all slits having the same shape and inclination angle, or may include a part of different slits, or all of the different slits. Slit. In the case where each of the rear slit regions RS has a plurality of rear slits R1, it is preferable that the slit rows extending in the longitudinal X in each of the rear slit regions RS are formed in two or more rows in the lateral Y, and more preferably More than 3 lines. The number of the rear slits R1 included in each slit row is preferably one or more, and more preferably two or more. In the sanitary napkin 1, as shown in FIG. 4, in each of the rear slit regions RS, three rows of slits extending in the longitudinal direction X are formed in the transverse direction Y, and the rear slits are included in each of the slit rows. The number of R1 is two. In the sanitary napkin 1, the slit rows arranged between the two slit rows are arranged closer to the upper portion 43 side of the absorbent body 4 than the two slit rows to form a rear slit region RS. In the sanitary napkin 1, as shown in FIGS. 1 and 4, the rear slits R1 constituting each of the rear slit regions RSr and RS1 are arranged symmetrically with respect to the longitudinal centerline CL to form a pair. Rear slit areas RSr, RSl. Further, in the sanitary napkin 1, each of the rear slit regions RS has a plurality of rear slits R1 each having the same shape and inclination angle. In the sanitary napkin 1, each rear slit R1 extends in a straight line parallel to the longitudinal centerline CL. In the sanitary napkin 1, the rear slits R1 extend in a straight line parallel to the longitudinal center line CL, and are arranged in a state of being dispersed in two directions of the longitudinal direction X and the transverse direction Y to form a rear slit region RS. The rear slit R1 of the sanitary napkin 1 is disposed on the main body absorbent sheet 41 located around the middle high portion 43 of the absorbent body 4. The rear slit R1 only needs to penetrate at least one layer of the body absorbent sheet 41 having a two-layer structure, but in the sanitary napkin 1, the rear slit R1 extends through the thickness direction of the body absorbent sheet 41 of the two-layer structure. Z penetrates all layers. In the sanitary napkin 1, as shown in FIG. 1, a pair of rear slit regions RSr, RS1 and a rear slit R1 are arranged closest to the middle-high portion 43 and located on the inner side of the most lateral Y An interval d1 in the transverse Y of the adjacent slits R1ar and R1al is the same as or larger than the width b3 of the transverse Y of the end 43B after the longitudinal X of the middle-high portion 43. Here, a pair of adjacent slits in the rear slits R1 constituting the rear slit regions RS are arranged closest to the middle-high part 43. In other words, the rear slits are located on the foremost side and spaced in the transverse direction Y. The ground exists as a pair of slits. The interval d2 between the pair of rear slits R1r and R1l means the shortest interval among the intervals Y between the pair of rear slits R1r and R1l in the lateral direction. In the sanitary napkin 1, as shown in FIGS. 1 and 4, the middle portion M of the absorbent body 4 is provided with the middle and high portions 43, so that the conformability to the liquid excretion portion of the wearer is improved. Moreover, in the sanitary napkin 1, the interval d1 between the pair of adjacent slits R1ar, R1al of the absorbent body 4 in the transverse Y direction is the same as or larger than the width b3 of the rear end portion 43B of the mid-high portion 43. Therefore, even when the body is supine at bedtime, by applying force from both sides of the tampon 1, one of the absorbent bodies 4 is close to the adjacent slit areas RSar and RSal with a pair of close proximity. The slits R1ar and R1al protrude toward the wearer's side as a starting point. If a part of the pair of close slit regions RSar and RSal protrudes toward the wearer side as described above, although it is not easy to cause discomfort to the wearer, it is not easy to create a gap with the skin. As a result, Improves fit, prevents body fluids from flowing along the skin, and improves leakproofness. From the viewpoint of further exerting such an effect, it is preferable that an interval d1 in the lateral Y direction between the pair of adjacent slits R1ar and R1al is larger than the width b3 of the rear end portion 43B of the middle-high portion 43. From the viewpoint of further exerting the above effects, the width b1 (see FIG. 4) of the rear slit R1 in plan view is preferably 0.1 mm or more, more preferably 0.2 mm or more, and further preferably 1 mm or less. It is preferably 0.8 mm or less, more preferably 0.1 mm or more and 1 mm or less, and still more preferably 0.2 mm or more and 0.8 mm or less. From the same point of view, the length (longitudinal X length) L1 (refer to FIG. 4) when the rear slit R1 is viewed in plan is preferably 10 mm or more, further preferably 15 mm or more, and more preferably 35 mm or less. It is more preferably 25 mm or less, more preferably 10 mm to 35 mm, and still more preferably 15 mm to 25 mm. From the viewpoint of further exerting the above-mentioned effect, when each of the rear slit regions RSr and RS1 has a plurality of rear slits R1, the distance (width between the rear slits R1 and R1) closest to each other in the lateral direction Y (width) Directional spacing) d3 is preferably 3 mm or more, further preferably 5 mm or more, further preferably 18 mm or less, still more preferably 15 mm or less, and still more preferably 3 mm or more and 18 mm or less, further It is preferably 5 mm or more and 15 mm or less. In the sanitary napkin 1, the pair of rear slit regions RSr, RS1 are located at the innermost rear in the transverse Y, and the slits R1r, R1l are located at the width of the transverse Y at the end after the longitudinal X of the middle-high part 43 is divided into 5 When divided equally, it is closer to the outer side of Y than the center 1 area. Therefore, it is easy to further exert the above effects. In addition, a pair of rear slits R1r, R1l arranged at one of the positions with the narrowest interval in the transverse Y is spaced apart from each other by the transverse Y interval d2 (refer to FIG. 1) of the middle high portion 43 in the longitudinal direction X and the end portion 43B in the transverse direction. When the width of Y is divided into 5 equal divisions, the width of the central 1 region is larger, and is preferably larger than the width of the central 1 region when the width of the transverse Y of the rear end 43B of the middle high portion 43 is divided into 3 equal divisions. In the case where a plurality of rear slits R1 constituting the rear slit regions RS are arranged, the pair of rear slits R1r, R1l arranged at one of the positions with the narrowest interval in the lateral Y is preferably adjacent to a pair of slits. The slits R1ar and R1al are different. The distance d2 (refer to FIG. 1) between the pair of rear slits R1r and R1l is preferably narrower than the interval d1 (refer to FIG. 1) between the pair of adjacent slits R1ar and R1al. . The interval d2 (refer to FIG. 1) between the pair of rear slits R1r, R1l means the shortest interval among the intervals Y between the pair of rear slits R1r, R1l in the lateral direction. Furthermore, in the sanitary napkin 1, the middle high portion 43 is formed by the rectangular central absorbent sheet 42, so that the width b3 of the middle Y of the middle high portion 43 is constant. On the other hand, when the width of the lateral Y is smaller at the rear end of the middle-high portion 43 than at the front side, the interval Y of the pair of adjacent slits R1ar and R1al is preferably the same as that of the middle-high portion. The maximum length of the transverse Y of the rearmost divided region of the rearmost part when the portion 43 is divided into 5 parts in the longitudinal direction X is the same as or longer than that of the longitudinal divided region, and is preferably adjacent to the rearmost divided region from the side. The maximum length of the transverse Y of two adjacent divided regions is the same or longer. Here, the “maximum length in the lateral Y” means the distance at the longest position in the lateral Y when the middle-high portion 43 is viewed in plan. By doing so, it is easy to further exert the above effects. Furthermore, in the sanitary napkin 1, the pair of rear slit regions RSr and RS1 are located at the innermost side of the lateral Y and are adjacent to each other in the lateral Y. The lateral Y distance between the lateral slits R1r and R1l is longer than the lateral Y phase. The distance between the adjacent central slits M1 and M1 in the transverse direction Y is long. Therefore, the middle-high portion 43 is easily deformed along the middle portion M, and the rear portion R is easily deformed in order to cushion the influence of the deformation. Therefore, it is easy to further exert the above effects. From the viewpoint of further exerting the above-mentioned effects, the distance d1 (refer to FIG. 1) between the pair of proximal slits R1ar and R1al is preferably 25 mm or more, further preferably 30 mm or more, and more preferably 55 mm or less. It is more preferably 45 mm or less, more preferably 25 mm or more and 55 mm or less, and still more preferably 30 mm or more and 45 mm or less. From the viewpoint of further exerting the above-mentioned effect, when a pair of rear slits R1l, R1r and a pair of adjacent slits R1ar, R1al are arranged at a position with the narrowest interval in the lateral Y, the pair of rear slits R1r The interval d2 between R1 and R1 (refer to FIG. 1) is preferably 8 mm or more, further preferably 15 mm or more, further preferably 40 mm or less, further preferably 30 mm or less, and further preferably 8 mm. It is more than 40 mm, and more preferably more than 15 mm and less than 30 mm. In addition, as shown in FIGS. 1 and 4, the sanitary napkin 1 has a pair of rear slit regions RSr and RS1, and also has a longitudinal X and a lateral Y distributedly disposed in the middle and high portions 43. The central slit region MS of the central slit M1 extending upward. Here, the so-called central slit M1 extending in the longitudinal direction X is the same as the above-mentioned lateral slit R1 extending in the longitudinal direction X, which means that its shape includes not only straight lines but also wavy lines as long as it extends in the longitudinal direction X. , Dashed line, and curve, etc., mean that as the inclination angle, it includes not only a slit extending parallel to the longitudinal centerline CL extending in the longitudinal direction X, but also an imaginary line extending parallel to the longitudinal centerline CL. The angle formed by the slit is less than 45 degrees. However, the inclination angle is preferably less than 30 degrees, particularly preferably less than 10 degrees, and most preferably 0 degrees. The central slit region MS preferably has such a central slit M1 of 10 or more and 40 or less, and further preferably has such a central slit M1 of 20 or more and 30 or less. In the central slit region MS, the slit rows in which the central slits M1 extending in the longitudinal direction X are intermittently arranged in the lateral direction Y are preferably formed in the longitudinal direction X by 3 or more rows, more preferably 4 rows or more, and further It is preferably 5 or more lines. The number of central slits M1 included in each slit row is preferably two or more, and more preferably three or more. The plurality of central slits M1 constituting the central slit region MS may be slits all having the same shape and inclination angle, or may include a part of different slits, or may be all different slits. In the sanitary napkin 1, when viewed from above as shown in FIG. 1, the rear slit R1 constituting each of the rear slit regions RS has a portion overlapping the groove 9. Preferably, in the sanitary napkin 1, one of the plurality of rear slits R1 constituting each of the rear slit regions RS has a longitudinal pressure rolling groove 92 or a third pressure rolling groove constituting the groove 9 disposed at the rear portion R. 94 overlapping parts. If the rear slit R1 has a portion overlapping with the groove 9 as described above, the synergistic effect of the groove 9 and the rear slit R1 can further improve the conformability of the sanitary napkin 1. In addition, if the rear slit R1 has a portion overlapping the groove 9, the front sheet 2 easily enters the inside of the absorbent body 4 from the rear slit R1 at the overlapping portion, and the body fluid flowing on the front sheet 2 is easy. Absorbed by the absorbent body 4. In the sanitary napkin 1, each rear wing portion 10H is a rear wing portion adhesive portion 10H1 on a non-skin-facing surface having a displacement preventing member extending in the longitudinal direction X. Further, when viewed from above as shown in FIG. 1, the rear slits R1 constituting the rear slit regions RS are not arranged further rearward than the rear end of the longitudinal X of the rear wing portion adhesive portion 10H1. In other words, in the sanitary napkin 1, among the plurality of rear slits R1 constituting each of the rear slit regions RS, the rear end of the rear slit R1 located behind the longitudinal direction X is located in the longitudinal direction X of the rear wing portion adhesive portion 10H1. The rear end is further in front of the longitudinal X. If the rear slit R1 and the rear slit R are formed at such a position, when the sanitary napkin is deformed along the wearer's body, the rear wing portion 10H is easily fixed to the shorts and the like through the rear wing adhesive portion 10H1. As a result, the occurrence of wrinkles caused by the rear slit R1 can be suppressed, and the leakproofness can be improved. In the sanitary napkin 1, as shown in FIGS. 1 and 4, in addition to the pair of rear slit regions RS, the middle and high portion 43 also has a center extending in the longitudinal direction X and the lateral direction Y dispersedly arranged in the longitudinal direction X and the lateral direction Y. The central slit region MS of the slit M1. Therefore, the central slit region MS is easily deformed along the body of the wearer by the central slit M1, the conformability of the sanitary napkin 1 is improved, and the leakproofness and the wearing feeling are further improved. From the viewpoint of further exerting the above effects, the width b2 (refer to FIG. 4) when the central slit M1 is viewed from the top is preferably 0.1 mm or more, more preferably 0.2 mm or more, and further preferably 1 mm or less, and more preferably It is preferably 0.8 mm or less, more preferably 0.1 mm or more and 1 mm or less, and still more preferably 0.2 mm or more and 0.8 mm or less. From the viewpoint of further exerting the above effects, the length (vertical X length) L2 (refer to FIG. 4) when the central slit M1 is viewed in plan is preferably 10 mm or more, further preferably 15 mm or more, and more preferably 35 mm. mm or less, more preferably 25 mm or less, more preferably 10 mm or more and 35 mm or less, and still more preferably 15 mm or more and 25 mm or less. From the viewpoint of further exerting the above effects, the distance (width-direction interval) d4 between the closest central slits M1 and M1 is preferably 3 mm or more, further preferably 7 mm or more, and further preferably 20 mm. Hereinafter, it is more preferably 15 mm or less, more preferably 3 mm or more and 20 mm or less, and still more preferably 7 mm or more and 15 mm or less. In the sanitary napkin 1, as shown in FIGS. 1 and 4, in the middle high portion 43 of the middle portion M of the absorbent body 4, a central slit M1 extending parallel to the longitudinal centerline CL is formed between two of the longitudinal direction X and the transverse direction Y. The central slit region MS is formed in a state of being dispersed symmetrically with respect to the longitudinal centerline CL in the direction. The central slit M1 of the sanitary napkin 1 only needs to pass through the 5-layer structured absorbent sheet (the two-layer structured main absorbent sheet 41 and the three-layered structured central absorbent sheet 42) that pass through the absorbent body 4 and constitute the mid-high part 43. At least one of them is sufficient, but in the sanitary napkin 1, all layers are penetrated in the thickness direction of the absorbent sheet having a five-layer structure. As shown in the sanitary napkin 1 shown in FIGS. 1 and 4, when the absorbent body 4 has a pair of rear slit regions RS and a central slit region MS, the absorbent body 4 is disposed at the rear end 43B in the longitudinal direction X of the middle high portion 43. The judgment of the upper slit as the rear slit R1 constituting the rear slit region RS or the central slit M1 constituting the central slit region MS is made as follows. That is, when the absorbent body 4 is viewed in plan, the imaginary line IL passing through the rear end of the middle X portion 43 in the longitudinal direction X rear end portion 43B and parallel to the lateral Y is used as a reference, and the slit to be judged coincides with the rear end portion 43B in the middle portion 43 If the ratio ((BL / AL) × 100) of the length (BL) of the longitudinal X of the part to the longitudinal X (AL) of the slit is 10% or less, it is determined that it constitutes the rear slit region RS. When the rear slit R1 is larger than 10%, it is determined that the central slit M1 constitutes the central slit region MS. In the sanitary napkin 1, as shown in FIGS. 1 and 4, when the sanitary napkin 1 is viewed from the lateral direction Y, among the central slits M1 constituting the central slit region MS, the width direction of the central slit region MS ( (Horizontal Y) The rear end of the central rearmost slit M1a located on the center side and located closest to the rear side in the longitudinal direction X does not coincide with the front end of the adjacent slit R1a of each rear slit region RS. The interval d5 (see FIG. 4) in the longitudinal direction X between the rear end of the central rearmost slit M1a and the front end of the proximal slit R1a is preferably 20 mm or less, further preferably 15 mm or less, and still more preferably 0 mm. It is more than 20 mm, and more preferably 0 mm and 15 mm. If it is in this range, due to the force applied from both sides of the sanitary napkin 1 during wearing, one of the absorbent bodies 4 pairs the proximal slits R1ar, CR1al with each other, and it is easy to use a pair of proximal slits R1ar, R1al as The starting point is a curved bulge toward the wearer. The distance d5 (see FIG. 4) in the longitudinal direction X between the rear end of the central rearmost slit M1a and the front end of the proximal slit R1a is preferably the length (lengthwise X length) L1 (see FIG. 4) of the rear slit R1 and At least one of the length (longitudinal X length) L2 (see FIG. 4) of the central slit M1 is short. The forming material of each constituent member of the sanitary napkin 1 of the present embodiment described above will be described. As the front sheet 2 and the back sheet 3, each of the previously used sheets and the like in absorbent articles such as menstrual tampons can be used without particular limitation. For example, as the front sheet 2, a non-woven fabric having a single-layer or multi-layer structure, an apertured film, or the like can be used. As the back sheet 3, a moisture-permeable resin film or the like can be used. In addition, as the sheet for forming a leak-proof cuff, a non-woven fabric having high water pressure resistance and water repellency, such as a spunbond nonwoven fabric, a spunbond-meltblown-spunbond layer nonwoven fabric, and the like can be used. As the superabsorbent polymer contained in the absorbent body 4, a particulate form is generally used, but a fibrous form may be used. When a particulate superabsorbent polymer is used, its shape may be any of a spherical shape, a block shape, a bag shape, or an indefinite shape. As the superabsorbent polymer, a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid can be generally used. Examples thereof include polyacrylic acid and a salt thereof, and polymethacrylic acid and a salt thereof. As the polyacrylate or polymethacrylate, a sodium salt can be preferably used. In addition, acrylic acid or methacrylic acid may be used in combination with maleic acid, itaconic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, and 2- (meth) acrylic acid ethylsulfonic acid. A copolymer obtained by copolymerizing a comonomer such as 2-hydroxyethyl (meth) acrylate or styrene sulfonic acid within a range that does not reduce the performance of the superabsorbent polymer. Examples of the constituent fibers included in the absorbent body 4 include synthetic fibers and cellulose-based fibers. The synthetic fiber is preferably a thermoplastic fiber, for example. Examples of the thermoplastic fiber include a single fiber formed using a single synthetic resin such as polyethylene, polypropylene, polyester, and polyurethane, or a composite fiber formed using two or more such synthetic resins. Composite fiber. Examples of the cellulose-based fibers include cross-linked cellulose fibers (pulp fibers) obtained by intracellular or intermolecular cross-linking of cellulose with an appropriate cross-linking agent, or those obtained by increasing the crystallinity of cellulose. Regenerated cellulose fibers such as 嫘 萦 fiber. In the sanitary napkin 1, the adhesive is preferably applied and fixed between the front sheet 2 and the absorbent 4 and between the absorbent 4 and the back sheet 3. The adhesive can be applied by a known mechanism, such as a slit coating gun, a spiral spray gun, a spray gun, or a spot gun. In the sanitary napkin 1, the spiral spray gun is preferably applied in a spiral shape. As the applied adhesive, for example, a hot-melt adhesive is preferably used. The coating amount of the hot-melt adhesive is preferably 1.5 g / m 2 Above 10 g / m 2 the following. As mentioned above, this invention was demonstrated based on the preferable embodiment, However, The absorbent article of this invention is not limited at all by the sanitary napkin 1 of the said embodiment, It can change suitably. For example, in the sanitary napkin 1, as shown in FIG. 4, in each of the rear slit regions RS of the absorbent body 4, three rows of slits extending in the longitudinal direction X are formed in the transverse direction Y, and each of the slit rows The number of the rear slits R1 included is two, and as in the absorbent body 4 shown in FIG. 5, in each of the rear slit regions RS, a row of slits extending in the longitudinal direction X is formed in the transverse direction Y. The number of rear slits R1 included in the central slit row is two, and the number of rear slits R1 included in both sides of the central slit row is one. article. Regarding the absorbent body 4 shown in FIG. 5, components different from the above-mentioned sanitary napkin 1 will be mainly described, and the same components are denoted by the same reference numerals and description thereof will be omitted. The components that are not particularly described apply the description about the absorbent body 4 shown in FIG. 4 as appropriate. As long as it is a menstrual tampon having the absorbent body 4 shown in FIG. 5, the same effect as that of the tampon 1 shown in FIG. 1 is exhibited. Moreover, in the sanitary napkin 1, as shown in FIG. 3, the absorbent body 4 is formed of an absorbent sheet, but it may not be an absorbent sheet, but may be covered with a core material to cover the pulp fibers including fiber stacks. Fiber-packed absorbent body made from the skin-facing side and non-skin-facing side of the absorbent core. In addition, the absorbent article of the present invention may be a sanitary pad (vaginal secret pad) or the like in addition to the menstrual tampon. Regarding the embodiment of the present invention described above, the following absorbent articles are further disclosed. <1> An absorbent article having a longitudinal direction corresponding to the front-back direction of the wearer and a transverse direction orthogonal to the longitudinal direction, and has an absorbent body, and has a front portion, a middle portion, and a rear portion along the longitudinal direction. The skin facing side of the middle portion has a thicker mid-high portion than the other portions. The absorption system is located on the rear side than the middle-high portion. The absorption system is provided with a rear slit extending in the longitudinal direction and a narrow side. The rear slit region is a pair of two rear slit regions formed by arranging a pair of the rear slit regions via an imaginary longitudinal centerline extending the absorbent body in the transverse direction and bisectly extending in the longitudinal direction. The rear slits, which are arranged closest to the middle-high part and located on the innermost side of the lateral direction, have a horizontal interval between the lateral widths that is the same as or greater than the width of the longitudinal rear end of the middle-high part. . <2> The absorbent article according to the above <1>, wherein the horizontal interval of the near slits is the same as the maximum horizontal length of the last part of the last side when the middle-high part is divided into five parts in the longitudinal direction. Or longer. <3> The absorbent article according to the above <1> or <2>, wherein the absorbent system has a central slit region in which the central slit extending in the longitudinal direction is dispersedly arranged in the longitudinal direction and the lateral direction in the middle and high portions. <4> The absorbent article according to the above <3>, wherein the absorbent article is viewed from a lateral direction, and the rear end of the central rearmost slit among the central slits constituting the central slit region is located at the rearmost side and The front ends of the proximal slits in each of the rear slit regions do not overlap. <5> The absorbent article according to the above <3> or <4>, in which the lateral distance between the lateral slits adjacent to each other in the lateral innermost side of each of the pair of rear slit regions is longer than in the lateral direction The distance Y in the transverse direction between the above-mentioned adjacent central slits. <6> The absorbent article according to any one of the above <1> to <5>, wherein each of the pair of rear slit regions is located at the innermost side of the lateral direction, and the rear slit is located behind the longitudinal direction of the middle and high portions. When the lateral width of the end portion is divided into 5 equal parts, it is more laterally outward than the central 1 area. <7> The absorbent article according to any one of the above <1> to <6>, wherein the absorbent article includes a front sheet and a back sheet that sandwich the absorbent body, and has the front surface facing the skin The sheet and the absorbent are integrated and have a bottom groove on the back sheet side. When the absorbent article is viewed in plan, the rear slits constituting each of the rear slit regions have portions overlapping the grooves. <8> The absorbent article according to any one of the items <1> to <7>, wherein the absorbent article has an absorbent body including the absorbent body and a front sheet sandwiching the absorbent body. And a back sheet, the rear part of the absorptive body is more rearward than the middle part, and has a pair of rear wings extending from both sides of the absorptive body along the longitudinal direction to the laterally outer side. The wings are attached to the non-skin-facing surface and have an anti-offset member extending in the longitudinal direction. When viewed from above the absorbent article, the rear slits constituting each of the rear slit regions are not arranged in the longitudinal direction of the anti-offset member. The rear end is further rearward. <9> The absorbent article according to any one of <1> to <8>, wherein the shape of the rear slit is a straight line, a wavy line, a curve, or a dotted line. <10> The absorbent article according to any one of the above <1> to <9>, wherein the angle formed by the rear slit and the imaginary longitudinal centerline extending parallel to the longitudinal direction is not more than 45 degrees, preferably It is less than 30 degrees, and more preferably less than 10 degrees. <11> The absorbent article according to any one of <1> to <10>, wherein the rear slit extends in the longitudinal direction. <12> The absorbent article according to any one of the items <1> to <11>, wherein in each of the rear slit regions, the slit lines extending in the longitudinal direction preferably have 2 or more rows in the lateral direction, and more Preferably there are more than 3 lines. <13> The absorbent article according to any one of the items <1> to <12>, wherein in each of the rear slit regions, the slit line extending in the longitudinal direction preferably has 2 or more rows in the lateral direction, and more Preferably, there are three or more rows, and one or more rear slits included in each of the above-mentioned slit rows are preferably one or more, and more preferably two or more. <14> The absorbent article according to any one of the items <1> to <13>, wherein the width of the rear slit in a plan view is 0.1 mm or more and 1 mm or less, and preferably 0.2 mm or more and 0.8 mm or less. <15> The absorbent article according to any one of <1> to <14>, wherein the longitudinal length of the rear slit when viewed from above is 10 mm or more and 35 mm or less, preferably 15 mm or more and 25 mm or less . <16> The absorbent article according to any one of the items <1> to <15>, in which a plurality of the rear slits are provided in the pair of rear slit regions, and the rear part is closest to the rear in the lateral direction. The horizontal interval between the slits is 3 mm or more and 18 mm or less, preferably 5 mm or more and 15 mm or less. <17> The absorbent article according to any one of the above <1> to <16>, wherein the above-mentioned absorption system has a central slit extending in the longitudinal direction and a transverse direction in which the central slit extending in the longitudinal direction is dispersed in the middle and high portions. A slit region, among the above-mentioned central slits constituting the central slit region, the rear end of the central rearmost slit which is located on the lateral central side of the central slit region and is located closest to the longitudinal direction and the front end of the proximal slit It does not overlap from the lateral view. <18> The absorbent article according to any one of the items <1> to <17>, wherein the longitudinal interval between the rear end of the central rearmost slit and the front end of the proximal slit is 0 mm or more and 20 mm Hereinafter, it is preferably 0 mm or more and 15 mm or less. <19> The absorbent article according to any one of <1> to <18>, wherein the absorbent system uses a multilayer structure formed of an absorbent sheet. <20> The absorbent article according to the above <19>, wherein the multilayer structure is formed by stacking a plurality of the absorbent sheets, or formed by stacking one absorbent sheet. <21> The absorbent article according to any one of <1> to <20>, wherein the absorbent body includes a central absorbent sheet formed of an absorbent sheet in the intermediate portion, and the central absorbent sheet covering the central absorbent sheet. The main body absorbent sheet of the material, and the central absorbent sheet is arranged in the middle and high part. <22> The absorbent article according to any one of the above <1> to <21>, wherein the thickness of the middle and high portions of the absorbent body is 0.7 mm or more and 5 mm or less, preferably 1 mm or more and 4 mm or less . <23> The absorbent article according to any one of the above <1> to <22>, wherein the thickness of the surrounding portion of the absorbent body except for the above-mentioned middle-high portion is 0.3 mm or more and 3 mm or less, It is preferably 0.5 mm or more and 2.5 mm or less. <24> The absorbent article according to any one of <1> to <23>, wherein the absorbent article is a menstrual tampon. [Examples] Hereinafter, the absorbent article of the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited in any way by this embodiment. <Example 1> A menstrual tampon having the same basic structure as the menstrual tampons shown in FIGS. 1 to 3 having an absorber shown in FIG. 4 was prepared, and this was used as a sample in Example 1. As a front sheet, use a basis weight of 25 g / m 2 Spunbond non-woven fabric. As a back sheet, use a basis weight of 35 g / m 2 Moisture-permeable resin film. As a sheet for leak-proof flanging, use a basis weight of 25 g / m 2 Spunbond non-woven fabric. The absorbent sheet constituting the absorbent body was produced in accordance with Example 2 of Japanese Patent No. 2963647. The average thickness of each absorbent sheet was 0.5 mm, the thickness of the middle and high portions of the absorber was 2.3 mm, and the lateral width of the rear end of the middle and high portions was 35 mm. Furthermore, the middle and high portions are rectangular. The detail of the slit arrange | positioned in an absorber is as follows. The rear slit R1 constituting each of the rear slit regions RS has a width b1 of 0.5 mm and a length L1 of 20 mm, and the distance d3 closest to the rear slits R1 and R1 is 7 mm. The distance d1 between the pair of adjacent slits R1ar, R1al is 38 mm, and the distance d2 between the pair of rear slits R1r, R1l is 24 mm. The central slit M1 constituting the central slit region MS has a width b2 of 0.5 mm and a length L2 of 20 mm. The distance d4 between the closest central slits M1 and M1 is 6 mm. The interval d5 in the longitudinal direction X between the rear end of the central rearmost slit M1a and the front end of the proximal slit R1a is 0 mm. <Example 2> A menstrual tampon having the same basic structure as that of the sample prepared in Example 1 was prepared except that the absorber shown in FIG. 5 was used instead of the absorber shown in FIG. 4. This is the sample of Example 2. The details of the slits arranged in the absorbent body shown in FIG. 5 are as follows. The mid-high portion 43 is rectangular, and the interval Y d1 between the pair of adjacent slits R1ar, R1al of the absorber in the transverse direction Y is 35 mm, which is the same as the width b1 of the rear end portion 43B of the mid-high portion 43. The rear slit R1 constituting each of the rear slit regions RS has a width b1 of 0.5 mm and a length L1 of 20 mm, and the distance d2 closest to the rear slits R1 and R1 is 7 mm. The distance d1 between the pair of adjacent slits R1ar, R1al is 38 mm, and the distance d2 between the pair of rear slits R1r, R1l is 24 mm. The central slit M1 constituting the central slit region MS has a width b2 of 0.5 mm and a length L2 of 20 mm. The distance d4 between the closest central slits M1 and M1 is 6 mm. The interval d5 in the longitudinal direction X between the rear end of the central rearmost slit M1a and the front end of the proximal slit R1a is 0 mm. <Comparative Example 1> An absorber obtained by removing a pair of rear slit regions RS from the absorber shown in FIG. 4 was used instead of the absorber shown in FIG. A menstrual tampon of the same basic constitution was sampled, and this was set as the sample of Comparative Example 1. [Evaluation] With respect to the samples (menstrual tampons) of Examples 1 and 2 and the samples (menstrual tampons) of Comparative Example 1, the diffusion distance of false blood in the longitudinal direction was measured by the following method. The results are shown in Table 1 below. ＜ Method of measuring the diffusion distance of false blood in the longitudinal direction ＞ A human body model of the lower body of a female who can inject liquid from the excretion point is used. After the model is put on the evaluation target sample in an upright state, the model is placed on its back. status. Then, using a liquid discharge pump with a speed adjustment function, 3.0 g of fake blood (horse blood) was injected every 1 minute from the excretion point, and a total of 6 g and 9 g were injected. One minute after the 6 g injection, the sample was removed from the model, and the longitudinal diffusion distances of the front sheet and the absorber produced by the injection of false blood (horse blood) were measured three times. The average value was set as the diffusion distance of the vertical false blood (horse blood). In either of the front sheet and the absorbent body, it is considered that the shorter the diffusion distance of the body fluid, the less likely a gap will be between the menstrual pad and the wearer's skin, and the less likely the body fluid will flow along the skin. high. In addition, defibrillated horse blood (manufactured by Nippon Biotest (stock)) was used as the false blood. [Table 1] As shown in Table 1, it can be seen that, compared with the menstrual napkin of Comparative Example 1, the menstrual napkins of Examples 1 and 2 have a longitudinal diffusion distance of false blood (horse blood) in the front sheet and a false in the absorbent body. The blood (horse blood) has a small longitudinal diffusion distance. Accordingly, compared with the menstrual napkins of Comparative Example 1, the menstrual napkins of Examples 1 and 2 are expected to prevent gaps between the skin and the skin during wearing, improve the fit, and prevent body fluids from flowing along the skin. Leakage is improved. [Industrial Applicability] According to the absorbent article of the present invention, the conformability is improved, the body fluid does not easily flow along the skin, and the leakproofness is improved.