TW201722383A

TW201722383A - Absorbent article

Info

Publication number: TW201722383A
Application number: TW105137377A
Authority: TW
Inventors: Youichi Suzuki; Mina Tomita; Wataru Hariu
Original assignee: Kao Corp
Priority date: 2015-11-20
Filing date: 2016-11-16
Publication date: 2017-07-01
Also published as: JP2017093733A; CN108348373B; WO2017086133A1; TWI727997B; CN108348373A; RU2700955C1; JP6170986B2

Abstract

This absorbent article includes a surface sheet (12) comprising a composite sheet, a back sheet (13), and an absorber (14) disposed between both of the sheets. The composite sheet (10) has a first direction (X) that follows along an article longitudinal direction and a second direction (Y) that follows along an article width direction. Laminated first sheet (1) and second sheet (2) are joined at a plurality of joining portions and the first sheet (1) forms protrusions (4) which protrude in a direction away from the second sheet (2) and toward the wearer's skin in locations other than the joining portions. On the composite sheet (10), a plurality of continuous protrusions (40) that extend in the second direction (Y) are formed spaced apart in the first direction (X) as the protrusions (4). The plurality of continuous protrusions (40) are either convexly curved toward one end of an article (100) in the longitudinal direction or have curved portions.

Description

Absorbent article

本發明係關於一種拋棄式尿布、經期衛生棉、失禁護墊等吸收性物品。The present invention relates to an absorbent article such as disposable diapers, menstrual sanitary napkins, incontinence pads, and the like.

先前，作為拋棄式尿布、經期衛生棉、失禁護墊等吸收性物品之正面片材，已知於朝向穿著者之肌膚側之肌膚側面藉由壓紋加工等而形成有凹凸形狀者。又，亦已知藉由於正面片材之肌膚側面形成凹凸形狀，而減少與穿著者之肌膚之接觸面積，提高透氣性，或降低對肌膚之黏附之技術。又，亦已知於吸收性物品之肌膚側面形成沿特定方向延伸之凸部及凹部之技術。例如，於專利文獻1中，記載有一種吸收性物品，其於吸收體形成有沿吸收性物品之寬度方向延伸之凹部，且以沿該凹部之內表面之方式配設有正面片材之與該凹部重合之部分；於專利文獻2中，亦記載有如下內容：於吸收性物品之肌膚側面，藉由壓紋加工，而形成有沿吸收性物品之寬度方向延伸之壓紋行，並將該壓紋行設定為向吸收性物品之長度方向之一端部凸起之彎曲形狀。又，本申請人先前提出有如下片材作為可用作吸收性物品之正面片材等之立體片材，即：經積層之第1片材及第2片材於複數個接合部相互接合，並且第1片材於接合部以外之部位向遠離第2片材之方向突出，而形成有向穿著者之肌膚側突出之凸部(例如，參照專利文獻3)。先前技術文獻專利文獻專利文獻1：日本專利特開平11-318976號公報專利文獻2：日本專利特開2003-230593號公報專利文獻3：日本專利特開2009-201964號公報Conventionally, as a front sheet of an absorbent article such as a disposable diaper, a menstrual napkin, or an incontinence pad, it is known that a skin having a concave-convex shape is formed by embossing or the like on the side of the skin on the skin side of the wearer. Further, it is also known to reduce the contact area with the wearer's skin by forming a concave-convex shape on the side surface of the front sheet, thereby improving the air permeability or reducing the adhesion to the skin. Further, a technique of forming a convex portion and a concave portion extending in a specific direction on the skin side surface of the absorbent article is also known. For example, Patent Document 1 discloses an absorbent article in which a concave portion extending in the width direction of the absorbent article is formed in the absorbent body, and a front sheet is disposed along the inner surface of the concave portion. In the patent document 2, the embossed line extending along the width direction of the absorbent article is formed by embossing on the skin side surface of the absorbent article, and The embossed row is set to have a curved shape that is convex toward one end portion of the absorbent article in the longitudinal direction. Moreover, the present applicant has previously proposed a sheet as a three-dimensional sheet which can be used as a front sheet or the like of an absorbent article, that is, the laminated first sheet and the second sheet are joined to each other at a plurality of joint portions. In addition, the first sheet protrudes away from the second sheet in a portion other than the joint portion, and a convex portion that protrudes toward the skin side of the wearer is formed (for example, see Patent Document 3). CITATION LIST Patent Literature Patent Literature 1: Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei.

於專利文獻1及2中，關於形成於壓紋行間或槽部間之凸部，由於形成該凸部之片材與配設於其下之構件接觸，故而該凸部之柔軟性較差。另一方面，於專利文獻3所記載之立體片材中，凸部包含第1片材之與吸收體或第2片材未接合之部分，因此該凸部柔軟且肌膚觸感較佳，但期望進一步提高柔軟性並提高透氣性。本發明提供一種具備包含複合片材之正面片材、背面片材及配置於該等兩片材間之吸收體之吸收性物品。上述複合片材具有沿物品之長度方向之第1方向及沿物品之寬度方向之第2方向，並且經積層之第1片材及第2片材於複數個接合部相互接合。又，第1片材於上述接合部以外之部位向遠離第2片材之方向突出，而形成有向穿著者之肌膚側突出之凸部。於上述複合片材，作為上述凸部，於第1方向隔開間隔而形成有複數條沿第2方向延伸之連續凸部。複數條上述連續凸部具有彎曲部分，該彎曲部分於俯視上述複合片材時，向物品之長度方向之前端側或後端側凸起而彎曲。In Patent Documents 1 and 2, in the convex portion formed between the embossed rows or between the groove portions, since the sheet forming the convex portion comes into contact with the member disposed below, the flexibility of the convex portion is inferior. On the other hand, in the three-dimensional sheet described in Patent Document 3, since the convex portion includes a portion of the first sheet that is not joined to the absorber or the second sheet, the convex portion is soft and the skin feel is good, but It is desirable to further improve the flexibility and improve the gas permeability. The present invention provides an absorbent article comprising a topsheet comprising a composite sheet, a backsheet, and an absorbent disposed between the two sheets. The composite sheet has a first direction along the longitudinal direction of the article and a second direction along the width direction of the article, and the laminated first sheet and the second sheet are joined to each other at a plurality of joint portions. Further, the first sheet protrudes away from the second sheet in a portion other than the joint portion, and a convex portion that protrudes toward the skin side of the wearer is formed. In the above composite sheet, as the convex portion, a plurality of continuous convex portions extending in the second direction are formed at intervals in the first direction. The plurality of continuous convex portions have a curved portion which is convexly curved toward the front end side or the rear end side in the longitudinal direction of the article when the composite sheet is viewed from above.

本發明係關於一種可消除上述先前技術所具有之缺點之吸收性物品。以下，基於本發明之較佳之實施形態，一面參照圖式，一面對本發明進行說明。於圖1及圖2中，示有作為本發明之吸收性物品之一實施形態之拋棄式尿布100(以下，亦簡稱為尿布100)之基本構造。如圖1及圖2所示，尿布100具備液體透過性之正面片材12、液體不透過性之背面片材13、及配置於兩片材12、13之間之吸收體14。關於背面片材13，所謂液體不透過性係亦包括液體難透過性之概念，背面片材13除完全不讓液體通過之情形以外，亦包括包含撥水性之片材等之情形等。尿布100具有：物品長度方向Xa，其係穿著時與穿著者之前後方向一致之方向；及物品寬度方向Ya，其於將尿布100如圖1所示呈平面狀鋪展之狀態下，與物品長度方向Xa正交。又，尿布100於物品長度方向Xa具有穿著時配置於穿著者之腹側之腹側部A、穿著時配置於穿著者之背側之背側部B、及位於腹側部A與背側部B之間之胯下部C。尿布100係展開型之拋棄式尿布，於背側部B之兩側緣部設置有黏扣帶17，於腹側部A之外表面，設置有固定該黏扣帶17之著扣區域18。尿布100之吸收體14具備吸收性芯體14a及包裹該吸收性芯體14a之包芯片材14b。吸收性芯體14a可包含例如紙漿纖維等吸液性纖維之纖維堆積體、或吸液性纖維與吸水性聚合物之混合纖維堆積體。作為吸液性纖維，例如可列舉紙漿纖維、嫘縈纖維、棉纖維、乙酸纖維素等纖維素系之親水性纖維。除纖維素系之親水性纖維以外，亦可使用藉由界面活性劑等將包含聚烯烴、聚酯、聚醯胺等合成樹脂之纖維親水化而成者。作為包芯片材14b，例如可使用衛生紙或透水性之不織布。包芯片材14b既可為以1片包裹吸收性芯體14a之整體，亦可為使2片以上組合而包裹吸收性芯體14a。作為背面片材13，可使用液體不透過性或撥水性之樹脂膜、樹脂膜與不織布之層壓片材等。於尿布100之長度方向Xa之兩側，配設有具有彈性構件15a之立體褶皺形成用之片材15，藉由該彈性構件15a之收縮，會於穿著狀態下之胯下部C形成向穿著者之肌膚側立起之立體褶皺。又，於胯下部C之配設於腿圍之部位，以伸長狀態配設有腿部彈性構件16，藉由其收縮，會於穿著狀態下之胯下部C形成使對穿著者之腿圍之服貼性提高之腿褶皺。第1實施形態之拋棄式尿布100之正面片材12包含圖3所示之複合片材10。如圖3所示，複合片材10具有沿尿布100之長度方向(物品長度方向)Xa之第1方向X、及沿尿布100之寬度方向(物品寬度方向)Ya之第2方向Y。又，如圖3所示，複合片材10具有以互不相同之圖案形成有凸部4之中央區域M、及位於該中央區域M之兩側之一對側部區域S、S。中央區域M位於尿布100之寬度方向(物品寬度方向)Ya之中央部，一對側部區域S、S形成於中央區域M之沿第2方向Y之兩側緣之外側。圖4係表示複合片材10之一部分之放大立體圖，圖5係表示複合片材10之一部分之放大俯視圖。於圖4及圖5中，示有複合片材10之配設於胯下部C之一部分。再者，側部區域S形成於相對於沿尿布100之長度方向Xa之中央線Lc左右對稱之位置，於側部區域S各者，以相同圖案形成有凹凸。如圖5及圖6所示，複合片材10於中央區域M及側部區域S，均為經積層之第1片材1及第2片材2藉由壓紋加工局部接合而形成有複數個接合部3，且經積層之第1片材1及第2片材2於複數個接合部3相互接合。而且，於中央區域M及側部區域S之任一者，均為第1片材1於上述接合部3以外之部位向遠離第2片材2之方向突出，而形成有向穿著者之肌膚側突出之凸部4。複合片材10於中央區域M及側部區域S之任一者，均為第2片材2側之面大致平坦，且於第1片材1側形成有起伏較大之凹凸。第1片材1及第2片材2由片材材料構成。作為片材材料，例如可使用不織布、織布及針織布等纖維片材、或膜等，就肌膚觸感等觀點而言，較佳為使用纖維片材，尤佳為使用不織布。構成第1片材1及第2片材2之片材材料之種類既可相同，或亦可不同。作為將不織布用作構成第1片材1及第2片材2之片材材料之情形時之不織布，例如可列舉熱風不織布、紡黏不織布、水刺不織布、熔噴不織布、樹脂黏合不織布、針刺不織布等。亦可使用將該等不織布組合2種以上而成之積層體、或將該等不織布與膜等組合而成之積層體。其等之中，較佳為使用熱風不織布或紡黏不織布。用作構成第1片材1及第2片材2之片材材料之不織布之基重較佳為10 g/m² 以上，更佳為15 g/m² 以上，又，較佳為40 g/m² 以下，更佳為35 g/m² 以下。不織布之基重較佳為10 g/m² 以上40 g/m² 以下，進而較佳為15 g/m² 以上35 g/m² 以下。作為構成不織布之纖維，可使用包含各種熱塑性樹脂之纖維。作為熱塑性樹脂，可列舉聚乙烯或聚丙烯等聚烯烴、聚對苯二甲酸乙二酯等聚酯、尼龍6或尼龍66等聚醯胺、聚丙烯酸、聚甲基丙烯酸烷基酯、聚氯乙烯、聚偏二氯乙烯等。該等樹脂可單獨使用1種，或作為2種以上之摻合物而使用。又，可以芯鞘型或並列型等複合纖維之形態使用。於複合片材10之中央區域M，如圖4～圖6所示，於第1方向X隔開固定距離而形成有複數條沿第2方向Y連續延伸之連續凸部40。而且，該等複數條連續凸部40分別具有彎曲部分，該等彎曲部分於俯視複合片材10時，向尿布100之長度方向即物品長度方向Xa之前端1a側凸起而彎曲。所謂前端1a側係指穿著時配置於穿著者之腹側之側，所謂後端1b側係指穿著時朝向穿著者之背側之側。對於無前後之區別之吸收性物品，將物品長度方向Xa之兩端中之任一者設定為前側，另一者設定為後側。本發明中之連續凸部40亦可具有向物品長度方向Xa之後端1b側凸起而彎曲之彎曲部分。此處，所謂「具有彎曲部分」之表現包括兩種情形，一種為如圖7所示於連續凸部40之第2方向Y之兩端部4s、4s間具有一個彎曲部分之情形，另一種為如圖8(a)所示於連續凸部40之第2方向Y之兩端部4s、4s間具有複數個彎曲部分R之情形。又，所謂「具有彎曲部分」之表現亦包括連續凸部40之整體為彎曲部分R之情形。本實施形態之複合片材10之連續凸部40於兩端部4s、4s間具有一個彎曲部分R。又，關於連續凸部40，各自之整體為彎曲部分R，且各自之整體向物品長度方向Xa之前端1a側(或後端1b側)凸起而彎曲。又，於本實施形態之複合片材10中，如圖3所示，所有連續凸部40之彎曲部分之凸起之朝向一致。於圖8(b)及圖8(c)所示之例中，複數個連續凸部40之彎曲部分之凸起之朝向亦一致。於複合片材10之一對側部區域S、S，作為第1片材1於接合部3以外之部位向遠離第2片材2之方向突出而形成之凸部4，如圖5所示，形成有第1凸部41及第2凸部42。形成於側部區域S之凸部4(第1凸部41及第2凸部42)如圖5所示於俯視時形成為散點狀，且形成為沿第1方向X及第2方向Y之各者分散之狀態。形成於側部區域S之凸部4(第1凸部41及第2凸部42)係以與形成於中央區域M之凸部即連續凸部40不同之圖案所形成。凸部之圖案不同之表現包括僅凸部之配置不同之情形、凸部之形態不同之情形、及該等兩者均不同之情形中之任一者。凸部之配置不同之態樣亦包括凸部間之距離不同之情形。又，凸部之形態不同之態樣亦包括凸部之俯視形狀不同之情形。於本實施形態之複合片材10中，凸部之配置及形態於中央區域M與一對側部區域S、S不同。又，於中央區域M及側部區域S之接合部3之各者，成為第1片材1及第2片材2中之一者或兩者之構成纖維之構成樹脂經熔融固化之狀態，又，於接合部3之各者，第1片材1及第2片材2與其他部分(接合部以外之部分)相比均高密度化。即，複合片材10之接合部3係第1片材1與第2片材2被一體地加熱及加壓而形成之熱熔合部，藉由一片材或兩片材之構成纖維之構成樹脂之熔融及其後之固化而將兩片材相互結合。於接合部3之各者，分別較佳為第1片材1及第2片材2兩者經熔融固化。又，於中央區域M及側部區域S之任一者，均亦可將第1片材1與第2片材2之間藉由熱熔合以外之接合手段、例如熱熔接著劑等接著劑而形成接合部3。於第1實施形態之尿布100中，構成正面片材12之複合片材10具有沿第2方向Y延伸之複數條連續凸部40，因此與穿著者肌膚之接觸面積減少，且於與穿著者肌膚之間確保了透氣性。而且，該等連續凸部40具有彎曲部分R，因此與不具有彎曲部分之情形時相比，該等連續凸部40不易被壓扁。因此，既便於在穿著過程中被施加穿著壓力之情形時，連續凸部40亦不易被壓扁，連續凸部40間等之通氣路徑得以穩定地維持，因此尿布100成為透氣性及防悶濕性優異者。又，因使連續凸部40彎曲，而使得連續凸部40不易被壓扁，故藉由未與第2片材2接合之第1片材1而形成之連續凸部40之頂部之柔軟性優異，肌膚觸感亦良好。又，第1實施形態中之複合片材10之連續凸部40之各者僅具有一個彎曲部分R，因此例如與如圖8(a)所示連續凸部40具有複數個彎曲部分R之情形時相比，具有連續凸部40對沿長度方向之穿著者之肌膚之活動的追隨性較佳，且不易摩擦穿著者之肌膚之優點。又，本實施形態中之連續凸部40各自之整體向物品長度方向Xa之前端1a側凸起而彎曲，因此具有易於與穿著者之身體貼合而服貼之優點。該效果於向物品長度方向Xa之後端1b側凸起而彎曲之情形時亦同樣奏效，但就易於遵循鼓起之腹部之形狀從而服貼性更優異之方面而言，較佳為如本實施形態之尿布100般，向物品長度方向Xa之前端1a側凸起而彎曲。又，複數條連續凸部40之彎曲部分之凸起之朝向一致可使相鄰之連續凸部40之彎曲部分近接，從而彎曲部分整體易於一體地發揮功能，對抗應力，將力分散，因此就防止各連續凸部之被壓扁難度降低之觀點而言較佳。於第1實施形態之尿布100中，如圖3所示，具有以互不相同之圖案形成之凸部4之中央區域M及其兩側之側部區域S、S係以跨及尿布100之長度方向之全長之方式形成，但於本發明之吸收性物品中，包含具有彎曲部分R之複數條連續凸部40之區域亦可僅形成於物品長度方向之任一部位，例如，亦可僅形成於胯下部C、僅形成於腹側部A、或僅形成於背側部B。具有彎曲部分R之複數條連續凸部40於尿布100之長度方向Xa上至少形成於胯下部C可使不易被壓扁之連續凸部區域位於排泄點附近，因此就可使形成於該區域之通氣路徑(連續之凹部)有效地發揮功能而除去悶濕因素之觀點而言較佳。又，就使不易被壓扁之連續凸部區域更近接於排泄點之觀點而言，具有彎曲部分R之複數條連續凸部40較佳為至少形成於胯下部之寬度方向中央部。包含具有彎曲部分R之複數條連續凸部40之區域進而較佳為自胯下部C跨及至腹側部A及背側部B中之任一者或兩者而形成、或跨及吸收體14之全長，進而以跨及尿布100之全長為佳。如圖5所示，於複合片材10之中央區域M之連續凸部40彼此間，形成有與連續凸部40同樣地彎曲之壓紋區域E。換言之，於第1方向X，第1片材1與第2片材2之間未接合之連續凸部40和壓紋區域E交替配置。於壓紋區域E形成有第1接合部31及第2接合部32作為經積層之第1片材1及第2片材2藉由壓紋加工局部接合而形成之接合部3。第1接合部31具有於第1方向X上較長之形狀之長方形狀，具有與第1接合部31之長方形之短邊相同之長度之1邊的正方形狀之4個第2接合部32以使各自之角部與該第1接合部31之4個角部對向之狀態近接配置於該第1接合部31之周圍。藉此，形成有包含1個第1接合部31及位於其周圍之4個第2接合部32之一組接合部群30。於各個壓紋區域E，以形成與連續凸部40同樣地彎曲之行之方式，沿第2方向Y以固定間隔而配置有具有相同構成之接合部群30，於相鄰之接合部群30間，介置有與第2接合部32相同形狀之第3接合部33。第1實施形態中所使用之複合片材10之中央區域M之壓紋區域E上成為與夾著壓紋區域E之兩側之連續凸部40相比高度較低之槽部5(參照圖6)，該槽部5內成為主要通氣路徑。再者，就以更短之距離及時間將悶濕因素引導至吸收體端部而不使悶濕滯留之觀點而言，連續凸部40較佳為以沿大致第2方向延伸之方式形成。於複合片材10之中央區域M，藉由以特定圖案形成之壓紋區域E以上述態樣形成有第1～第3接合部31～33，以及於製造複合片材10時自背面側按壓、或自正面側抽吸第1片材1之相當於連續凸部40之部分等，而於複合片材10之中央區域M形成有如圖5及圖6所示之俯視形狀及剖面形狀之連續凸部40。又，於複合片材10之側部區域S，藉由以圖5所示之態樣形成有接合部3，以及於製造複合片材10時自背面側按壓、或自正面側抽吸第1片材1之相當於第1凸部41或第2凸部42之部分等，而於複合片材10之側部區域S形成有如圖5所示之俯視形狀之向肌膚側突出之第1凸部41及第2凸部42。第1實施形態中所使用之複合片材10於中央區域M之壓紋區域E上，形成有與夾著壓紋區域E之兩側之連續凸部40相比高度較低之槽部5。又，如圖9所示，於側部區域S，在凸部4(第1凸部41、第2凸部42)間形成有呈格子狀連續之凹部5S，於側部區域S，空氣沿格子狀之凹部5S於多個方向流通。藉由於吸收性物品之寬度方向中央部形成使空氣於寬度方向流通之槽部5，另一方面，於側部區域S形成使空氣於多個方向流通之格子狀之凹部5S，可將於中央區域M產生之悶濕因素引導至側部區域S，使其迅速遠離中央部，藉由使其自中央部向其他地方擴散而將其無滯留地引導至吸收體緣部。再者，較佳為於將尿布100如圖1所示呈平面狀鋪展之狀態下，側部區域S之物品寬度方向之整體或一部分被立體褶皺形成用片材15或立體褶皺覆蓋。又，就可使外力均等地施加於連續凸部40之方面而言，連續凸部40較佳為如圖5所示，具有相對於沿尿布100(物品)之長度方向Xa延伸之中央線Lc左右對稱之形狀。外力均等地施加於連續凸部40可防止穿著時之應力等外力單向集中而導致其被壓扁，因此較佳。就使上述一種或兩種以上效果進一步確實地奏效之觀點而言，複合片材之凸部較佳為具有以下構成。形成於中央區域M之連續凸部40之最大高度部分之高度H1(參照圖6)較佳為0.5 mm以上，進而較佳為1.0 mm以上，又，較佳為10 mm以下，進而較佳為5.0 mm以下，又，較佳為0.5 mm以上10 mm以下，進而較佳為1.0 mm以上5.0 mm以下。又，形成於側部區域S之高度最大之凸部即第1凸部41之高度較佳為0.3 mm以上，進而較佳為0.6 mm以上，又，較佳為4.0 mm以下，進而較佳為3.0 mm以下，又，較佳為0.3 mm以上4.0 mm以下，進而較佳為0.6 mm以上3.0 mm以下。關於複合片材，所謂凸部4之高度，如圖6所示，被定義為第2片材2之下表面至第1片材1之上表面之距離。又，高度設定為使用數位顯微鏡(Keyence製造)觀察各凸部剖面而計測出第2片材2之下表面與凸部頂部之最短距離所獲得之值。又，連續凸部40之沿第2方向Y之長度L1(參照圖7)較佳為沿第1方向X之長度L2(參照圖7)之0.9倍以上，進而較佳為5倍以上，又，較佳為50倍以下，進而較佳為25倍以下，又，較佳為0.9倍以上50倍以下，進而較佳為5倍以上25倍以下。又，連續凸部40之彎曲凹部C4之最大深度d(參照圖7)較佳為連續凸部40之沿第1方向X之長度L2(參照圖7)之10%以上，進而較佳為15%以上，又，較佳為90%以下，進而較佳為70%以下，又，較佳為10%以上90%以下，進而較佳為15%以上70%以下。又，於第1方向X上相鄰之連續凸部40彼此間之間距P(同一位置間之距離)較佳為連續凸部40之沿第1方向X之長度L2(參照圖7)之15%以上，進而較佳為100%以上，又，較佳為300%以下，進而較佳為200%以下，又，較佳為15%以上300%以下，進而較佳為100%以上200%以下。又，連續凸部40之沿第2方向Y之長度L1(參照圖7)較佳為尿布100(吸收性物品)之胯下部C之最小寬度L(參照圖1)之20%以上，進而較佳為30%以上，又，較佳為90%以下，進而較佳為50%以下，又，較佳為20%以上90%以下，進而較佳為30%以上50%以下。又，連續凸部40之沿第2方向Y之長度L1(參照圖7)較佳為20 mm以上，進而較佳為50 mm以上，又，較佳為200 mm以下，進而較佳為100 mm以下，又，較佳為20 mm以上200 mm以下，進而較佳為50 mm以上100 mm以下。於製造上述構成之複合片材10時，以與日本專利特開2015-112343號公報中所記載之方法同樣之方式，將帶狀之第1片材1供給至周面互為嚙合形狀之第1輥與第2輥之間，使第1片材1變形為凹凸形狀之後，使第1片材1沿第1輥之周面部自嚙合部分移動，然後以與第1片材1重合之方式供給第2片材2，將兩片材1、2於加熱下夾壓於第1輥之凸部與加熱輥之間使之局部接合。而且，此時，使第1輥及第2輥之凹凸形狀、以及藉由第1輥與加熱輥而形成之接合部之圖案於第1片材之中央部與側部不同。再者，於將第1片材1嚙入至第1輥與第2輥之嚙合部使之變形為凹凸形狀時，較佳為將第1片材向輥內部方向抽吸，而促進第1片材1向凹凸形狀變形。其次，對本發明之第2實施形態進行說明。作為第2實施形態之吸收性物品之拋棄式尿布使用代替上述複合片材10之中央區域M及側部區域S而具有以圖10所示之圖案形成有凸部及接合部之中央區域M以及側部區域S之複合片材，作為構成正面片材之複合片材。於圖10所示之複合片材之中央區域M，亦與複合片材10同樣地，於第1方向X隔開間隔而形成有複數個整體為彎曲部分之連續凸部40。因此，可實現與使用上述複合片材10之情形時相同之效果。以上，基於本發明之較佳之實施形態對本發明進行了說明，但本發明並不受上述各實施形態所限制，而可適當變更。例如，構成壓紋區域E之各個接合部之形狀及配置可適當決定，各個接合部之形狀除長方形或正方形狀以外，亦可採用圓形、橢圓形、長圓形、三角形、四角形、五角形、六角形、星形、心形、三角形等任意形狀。夾著連續凸部40之壓紋區域E較佳為整體上呈與連續凸部40大致相同之形狀彎曲。又，本發明中之複合片材亦可具有如下兩個區域：一個區域形成有具有向物品長度方向Xa之前端1a側凸起而彎曲之彎曲部分之複數條連續凸部，另一個區域形成有具有向物品長度方向Xa之後端1b側凸起而彎曲之彎曲部分之複數條連續凸部。又，本發明之吸收性物品亦可為短褲型(套穿型)之拋棄式尿布，又，亦可為短褲型或普通非短褲型之經期衛生棉，亦可為失禁護墊、衛生護墊等，而代替展開型之拋棄式尿布。關於上述實施形態，本發明進而揭示以下吸收性物品。＜1＞一種吸收性物品，其具備包含複合片材之正面片材、背面片材及配置於該等兩片材間之吸收體，且上述複合片材具有沿物品之長度方向之第1方向及沿物品之寬度方向之第2方向，並且經積層之第1片材及第2片材於複數個接合部相互接合，且第1片材於上述接合部以外之部位向遠離第2片材之方向突出，而形成有向穿著者之肌膚側突出之凸部，於上述複合片材，作為上述凸部，於第1方向隔開間隔而形成有複數條沿第2方向延伸之連續凸部，複數條上述連續凸部具有彎曲部分，該彎曲部分於俯視上述複合片材時，向物品之長度方向之前端側或後端側凸起而彎曲。＜2＞如上述＜1＞之吸收性物品，其中上述連續凸部之各者僅具有一個上述彎曲部分。＜3＞如上述＜1＞或＜2＞之吸收性物品，其中上述連續凸部各自之整體向物品之長度方向之前端側或後端側凸起而彎曲。＜4＞如上述＜1＞至＜3＞中任一項之吸收性物品，其中上述複數條上述連續凸部之上述彎曲部分之凸起之朝向一致。＜5＞如上述＜1＞至＜4＞中任一項之吸收性物品，其中上述吸收性物品具有穿著時配置於穿著者之腹側之腹側部、穿著時配置於穿著者之背側之背側部、及位於該腹側部與該背側部之間之胯下部，且複數條上述連續凸部至少形成於胯下部。＜6＞如上述＜1＞至＜5＞中任一項之吸收性物品，其中上述連續凸部具有相對於沿物品之長度方向延伸之中央線左右對稱之形狀。＜7＞如上述＜1＞至＜6＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且形成於上述側部區域之凸部(第1凸部及第2凸部)係以與形成於上述中央區域之凸部即連續凸部不同之圖案所形成。＜8＞如上述＜1＞至＜7＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且上述複合片材之上述凸部之配置及形態於上述中央區域與上述一對側部區域不同。＜9＞如上述＜1＞至＜8＞中任一項之吸收性物品，其具有形成有複數條上述連續凸部之中央區域、及隔著該中央區域而位於其兩側之側部區域，且於該側部區域，呈散點狀形成有上述凸部，於該凸部彼此間，形成有呈格子狀連續之凹部。＜10＞如上述＜1＞至＜9＞中任一項之吸收性物品，其中具有以互不相同之圖案形成之上述凸部之中央區域及位於其兩側之一對側部區域係以跨及上述吸收性物品之長度方向之全長之方式形成。＜11＞如上述＜1＞至＜10＞中任一項之吸收性物品，其具有於俯視上述複合片材時向物品長度方向之前端側凸起而彎曲之彎曲部分，上述物品長度方向係上述吸收性物品之長度方向，上述前端側係穿著時配置於穿著者之腹側之側。＜12＞如上述＜1＞至＜11＞中任一項之吸收性物品，其中上述吸收性物品具有穿著時配置於穿著者之腹側之腹側部、穿著時配置於穿著者之背側之背側部、及位於該腹側部與該背側部之間之胯下部，且複數條上述連續凸部至少形成於上述胯下部之寬度方向中央部。＜13＞如上述＜1＞至＜12＞中任一項之吸收性物品，其中上述吸收性物品具有穿著時配置於穿著者之腹側之腹側部、穿著時配置於穿著者之背側之背側部、及位於該腹側部與該背側部之間之胯下部，且包含具有上述彎曲部分之複數條上述連續凸部之區域較佳為自上述胯下部跨及至上述腹側部及上述背側部中之任一者或兩者而形成。＜14＞如上述＜1＞至＜13＞中任一項之吸收性物品，其中上述吸收性物品具有吸收體，且包含具有上述彎曲部分之複數條上述連續凸部之區域進而較佳為跨及上述吸收體之全長，進而以跨及吸收性物品之全長為佳。＜15＞如上述＜1＞至＜14＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且於上述複合片材之上述中央區域之上述連續凸部彼此間，形成有與該連續凸部同樣地彎曲之壓紋區域，於上述第1方向X，上述第1片材與上述第2片材之間未接合之上述連續凸部和上述壓紋區域交替配置。＜16＞如上述＜1＞至＜15＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且於上述複合片材之上述中央區域之上述連續凸部彼此間，形成有與該連續凸部同樣地彎曲之壓紋區域，上述複合片材之上述中央區域之上述壓紋區域上成為與夾著該壓紋區域之兩側之上述連續凸部相比高度較低之槽部。＜17＞如上述＜1＞至＜16＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且於上述複合片材之上述中央區域之上述連續凸部彼此間，形成有與該連續凸部同樣地彎曲之壓紋區域，夾著上述連續凸部之上述壓紋區域較佳為整體上呈與上述連續凸部大致相同之形狀彎曲。＜18＞如上述＜1＞至＜17＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且於上述中央區域及上述側部區域之上述接合部之各者，成為上述第1片材及上述第2片材中之一者或兩者之構成纖維之構成樹脂經熔融固化之狀態，又，於上述接合部之各者，上述第1片材及上述第2片材與其他部分(接合部以外之部分)相比均高密度化。＜19＞如上述＜1＞至＜18＞中任一項之吸收性物品，其中作為將不織布用作構成上述第1片材及上述第2片材之片材材料之情形時之不織布，用作構成上述第1片材及上述第2片材之片材材料之不織布之基重較佳為10 g/m² 以上，更佳為15 g/m² 以上，又，較佳為40 g/m² 以下，更佳為35 g/m² 以下。＜20＞如上述＜1＞至＜19＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且形成於上述中央區域之上述連續凸部之最大高度部分之高度較佳為0.5 mm以上，進而較佳為1 mm以上，又，較佳為10 mm以下，進而較佳為5 mm以下。＜21＞如上述＜1＞至＜20＞中任一項之吸收性物品，其具有以互不相同之圖案形成有上述凸部之中央區域及位於該中央區域之兩側之一對側部區域，且形成於上述側部區域之高度最大之凸部即第1凸部之高度較佳為0.3 mm以上，進而較佳為0.6 mm以上，又，較佳為4 mm以下，進而較佳為3 mm以下。＜22＞如上述＜1＞至＜21＞中任一項之吸收性物品，其中上述連續凸部之沿上述第2方向之長度較佳為沿上述第1方向之長度之0.9倍以上，進而較佳為5倍以上，又，較佳為50倍以下，進而較佳為25倍以下。＜23＞如上述＜1＞至＜22＞中任一項之吸收性物品，其中上述連續凸部之呈凹狀彎曲之彎曲凹部之最大深度較佳為上述連續凸部之沿上述第1方向之長度的10%以上，進而較佳為15%以上，又，較佳為90%以下，進而較佳為70%以下。＜24＞如上述＜1＞至＜23＞中任一項之吸收性物品，其中於上述第1方向上相鄰之上述連續凸部彼此間之間距P(同一位置間之距離)較佳為上述連續凸部之沿上述第1方向之長度的15%以上，進而較佳為100%以上，又，較佳為300%以下，進而較佳為200%以下。＜25＞如上述＜1＞至＜24＞中任一項之吸收性物品，其中上述吸收性物品具有穿著時配置於穿著者之腹側之腹側部、穿著時配置於穿著者之背側之背側部、及位於該腹側部與該背側部之間之胯下部，且上述連續凸部之沿上述第2方向之長度L1較佳為上述吸收性物品之上述胯下部之最小寬度的20%以上，進而較佳為30%以上，又，較佳為90%以下，進而較佳為50%以下。 [產業上之可利用性] 根據本發明之吸收性物品，連續凸部之頂部柔軟，肌膚側面之肌膚觸感較佳，此外，凸部不易被壓扁，凸部間之通氣路徑穩定地得到維持，透氣性及防悶濕性優異。The present invention relates to an absorbent article which eliminates the disadvantages of the prior art described above. Hereinafter, the present invention will be described with reference to the drawings based on preferred embodiments of the present invention. Fig. 1 and Fig. 2 show the basic structure of a disposable diaper 100 (hereinafter also referred to simply as diaper 100) which is an embodiment of the absorbent article of the present invention. As shown in FIGS. 1 and 2, the diaper 100 includes a liquid-permeable front sheet 12, a liquid-impermeable back sheet 13, and an absorber 14 disposed between the sheets 12 and 13. The back sheet 13 also includes the concept of liquid impermeability, and the back sheet 13 includes a water-repellent sheet or the like in addition to the case where the liquid is not allowed to pass through. The diaper 100 has a product length direction Xa which is a direction in which the wearer is in the same direction as the front and rear directions of the wearer, and an article width direction Ya in which the diaper 100 is spread in a planar shape as shown in FIG. The direction Xa is orthogonal. Further, the diaper 100 has the ventral side portion A disposed on the ventral side of the wearer when worn, the back side portion B disposed on the back side of the wearer when worn, and the ventral side portion A and the back side portion in the article longitudinal direction Xa. Lower part C between B. The diaper 100 is an unfolded diaper of an unfolded type, and a fastening tape 17 is provided on both side edges of the back side portion B, and a fastening region 18 for fixing the fastening tape 17 is provided on the outer surface of the abdominal side portion A. The absorbent body 14 of the diaper 100 includes an absorbent core 14a and a core material 14b that wraps the absorbent core 14a. The absorbent core 14a may include a fiber deposit of liquid-absorbent fibers such as pulp fibers or a mixed fiber stack of a liquid-absorbent fiber and a water-absorbent polymer. Examples of the liquid-absorbent fiber include cellulose-based hydrophilic fibers such as pulp fibers, ray fibers, cotton fibers, and cellulose acetate. In addition to the cellulose-based hydrophilic fiber, a fiber containing a synthetic resin such as polyolefin, polyester or polyamine may be hydrophilized by a surfactant or the like. As the packaged core material 14b, for example, a toilet paper or a water-permeable nonwoven fabric can be used. The packaged core material 14b may be one in which the absorbent core 14a is wrapped in one piece, or the absorbent core 14a may be wrapped in two or more pieces. As the back surface sheet 13, a resin film which is liquid-impermeable or water-repellent, a laminated film of a resin film and a nonwoven fabric, or the like can be used. On both sides of the longitudinal direction Xa of the diaper 100, a sheet 15 for forming a three-dimensional pleat having an elastic member 15a is disposed, and by the contraction of the elastic member 15a, the lower portion C in the worn state is formed to the wearer. The three-dimensional folds of the skin side. Further, the lower portion C is disposed at a portion of the leg circumference, and the leg elastic member 16 is disposed in an extended state, and by contracting, the crotch portion C in the worn state is formed to surround the leg of the wearer. Appreciable leg folds. The front sheet 12 of the disposable diaper 100 of the first embodiment comprises the composite sheet 10 shown in Fig. 3 . As shown in FIG. 3, the composite sheet 10 has a first direction X along the longitudinal direction (article length direction) Xa of the diaper 100 and a second direction Y along the width direction (article width direction) Ya of the diaper 100. Further, as shown in FIG. 3, the composite sheet 10 has a central region M in which the convex portions 4 are formed in mutually different patterns, and a pair of side regions S and S located on both sides of the central region M. The central region M is located at the central portion of the width direction (article width direction) Ya of the diaper 100, and the pair of side regions S and S are formed on the outer sides of the central region M along the both side edges of the second direction Y. 4 is an enlarged perspective view showing a portion of the composite sheet 10, and FIG. 5 is an enlarged plan view showing a portion of the composite sheet 10. In FIGS. 4 and 5, a portion of the composite sheet 10 disposed on the lower portion C of the crotch is shown. Further, the side region S is formed at a position symmetrical with respect to the center line Lc along the longitudinal direction Xa of the diaper 100, and each of the side regions S is formed with irregularities in the same pattern. As shown in FIG. 5 and FIG. 6, the composite sheet 10 is formed in the central region M and the side region S by the partial joining of the first sheet 1 and the second sheet 2 which are laminated by embossing. In the joint portion 3, the laminated first sheet 1 and the second sheet 2 are joined to each other at a plurality of joint portions 3. Further, in either of the central region M and the side region S, the first sheet 1 protrudes away from the second sheet 2 in a portion other than the joint portion 3, and forms a skin toward the wearer. The convex portion 4 protrudes from the side. In the composite sheet 10, the surface of the second sheet 2 is substantially flat on either side of the central portion M and the side portion S, and irregularities having large undulations are formed on the first sheet 1 side. The first sheet 1 and the second sheet 2 are composed of a sheet material. As the sheet material, for example, a fiber sheet such as a nonwoven fabric, a woven fabric, or a knitted fabric, or a film can be used. From the viewpoint of skin feel and the like, a fiber sheet is preferably used, and a nonwoven fabric is preferably used. The types of the sheet materials constituting the first sheet 1 and the second sheet 2 may be the same or different. Examples of the non-woven fabric in the case where the nonwoven fabric is used as the sheet material constituting the first sheet 1 and the second sheet 2 include hot air non-woven fabric, spunbonded nonwoven fabric, spunlaced nonwoven fabric, melt-blown nonwoven fabric, resin bonded nonwoven fabric, and needle. Sting non-woven cloth, etc. A laminate obtained by combining two or more kinds of nonwoven fabrics or a laminate obtained by combining the nonwoven fabric with a film or the like may be used. Among them, it is preferred to use a hot air non-woven fabric or a spunbonded non-woven fabric. The basis weight of the nonwoven fabric used as the sheet material constituting the first sheet 1 and the second sheet 2 is preferably 10 g/m ² or more, more preferably 15 g/m ² or more, and further preferably 40 g. /m ² or less, more preferably 35 g/m ² or less. The basis weight of the nonwoven fabric is preferably 10 g/m ² or more and 40 g/m ² or less, and more preferably 15 g/m ² or more and 35 g/m ² or less. As the fiber constituting the nonwoven fabric, fibers containing various thermoplastic resins can be used. Examples of the thermoplastic resin include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides such as nylon 6 or nylon 66, polyacrylic acid, polyalkyl methacrylate, and polychlorinated chlorine. Ethylene, polyvinylidene chloride, etc. These resins may be used singly or as a blend of two or more kinds. Further, it can be used in the form of a composite fiber such as a core sheath type or a side-by-side type. As shown in FIGS. 4 to 6 in the central region M of the composite sheet 10, a plurality of continuous convex portions 40 continuously extending in the second direction Y are formed at a fixed distance in the first direction X. Further, each of the plurality of continuous convex portions 40 has a curved portion which is convexly curved toward the longitudinal direction of the diaper 100, that is, the front end 1a side of the article longitudinal direction Xa when the composite sheet 10 is viewed from above. The front end 1a side refers to the side disposed on the ventral side of the wearer when worn, and the rear end 1b side refers to the side facing the wearer's back side when worn. For the absorbent article having no difference between the front and the back, one of the two ends of the article length direction Xa is set to the front side, and the other is set to the rear side. The continuous convex portion 40 in the present invention may have a curved portion which is convexly curved toward the end 1b side of the article longitudinal direction Xa. Here, the expression "having a curved portion" includes two cases, one being a curved portion between the both end portions 4s, 4s of the second direction Y of the continuous convex portion 40 as shown in Fig. 7, and the other As shown in FIG. 8(a), a plurality of curved portions R are provided between both end portions 4s and 4s in the second direction Y of the continuous convex portion 40. Further, the expression "having a curved portion" also includes the case where the entire continuous convex portion 40 is the curved portion R. The continuous convex portion 40 of the composite sheet 10 of the present embodiment has a curved portion R between the both end portions 4s and 4s. Further, each of the continuous convex portions 40 is a curved portion R as a whole, and the entire body is convexly curved toward the front end 1a side (or the rear end 1b side) of the article longitudinal direction Xa. Further, in the composite sheet 10 of the present embodiment, as shown in Fig. 3, the directions of the projections of the curved portions of all the continuous convex portions 40 coincide. In the examples shown in Figs. 8(b) and 8(c), the orientations of the projections of the curved portions of the plurality of continuous convex portions 40 are also uniform. The pair of side portions S and S of the composite sheet 10 are formed as convex portions 4 which are formed in a direction away from the second sheet 2 as a portion of the first sheet 1 other than the joint portion 3, as shown in FIG. The first convex portion 41 and the second convex portion 42 are formed. As shown in FIG. 5, the convex portion 4 (the first convex portion 41 and the second convex portion 42) formed in the side portion S is formed in a scatter shape in a plan view, and is formed along the first direction X and the second direction Y. The state of each of them is dispersed. The convex portion 4 (the first convex portion 41 and the second convex portion 42) formed in the side portion S is formed in a pattern different from the continuous convex portion 40 which is a convex portion formed in the central portion M. The difference in the pattern of the convex portion includes any case where the arrangement of the convex portions is different, a case where the convex portions are different, and a case where the two are different. The different configurations of the convex portions also include the case where the distance between the convex portions is different. Further, the different shapes of the convex portions also include the case where the convex portions have different shapes in plan view. In the composite sheet 10 of the present embodiment, the arrangement and form of the convex portions are different from the pair of side regions S and S in the central region M. Further, in each of the joint portions 3 of the central portion M and the side portion S, the constituent resin of the constituent fibers of one or both of the first sheet 1 and the second sheet 2 is melt-solidified. Further, in each of the joint portions 3, the first sheet 1 and the second sheet 2 are higher in density than the other portions (portions other than the joint portion). In other words, the joint portion 3 of the composite sheet 10 is a heat-fused portion in which the first sheet 1 and the second sheet 2 are integrally heated and pressurized, and is composed of a sheet material or a constituent material of two sheets. The melting of the resin and subsequent curing thereof combine the two sheets with each other. In each of the joint portions 3, it is preferable that both the first sheet 1 and the second sheet 2 are melt-solidified. Further, in either of the central region M and the side region S, a bonding means other than thermal fusion between the first sheet 1 and the second sheet 2, for example, an adhesive such as a hot-melt adhesive may be used. The joint portion 3 is formed. In the diaper 100 according to the first embodiment, the composite sheet 10 constituting the topsheet 12 has a plurality of continuous convex portions 40 extending in the second direction Y, so that the contact area with the wearer's skin is reduced, and the wearer and the wearer Breathability is ensured between the skin. Moreover, the continuous convex portions 40 have the curved portion R, and thus the continuous convex portions 40 are not easily crushed as compared with the case where the curved portion is not provided. Therefore, even when it is easy to apply the wearing pressure during the wearing process, the continuous convex portion 40 is not easily crushed, and the ventilation path between the continuous convex portions 40 is stably maintained, so that the diaper 100 becomes breathable and moisturized. Excellent sex. Further, since the continuous convex portion 40 is bent so that the continuous convex portion 40 is not easily crushed, the flexibility of the top portion of the continuous convex portion 40 formed by the first sheet 1 not joined to the second sheet 2 is softened. Excellent, good skin feel. Further, each of the continuous convex portions 40 of the composite sheet 10 in the first embodiment has only one curved portion R, and thus, for example, a case where the continuous convex portion 40 has a plurality of curved portions R as shown in Fig. 8(a) In contrast, the continuous convex portion 40 has a better followability to the movement of the wearer's skin along the longitudinal direction, and is less likely to rub against the wearer's skin. Further, since the entire continuous convex portion 40 in the present embodiment is convexly curved toward the front end 1a side in the longitudinal direction of the article Xa, it has an advantage that it can be easily attached to the wearer's body. This effect is also effective in the case of being convexly curved toward the end 1b side of the article longitudinal direction Xa, but it is preferable to follow the shape of the abdomen which is swollen and to be more excellent in conformability. In the diaper 100 of the form, the diaper 100 is convexly curved toward the front end 1a side in the longitudinal direction of the article Xa. Further, the convex portions of the curved portions of the plurality of continuous convex portions 40 are aligned so that the curved portions of the adjacent continuous convex portions 40 are close to each other, so that the curved portion as a whole is easy to function integrally, resisting stress, dispersing the force, and thus It is preferable from the viewpoint of preventing the flatness of each continuous convex portion from being lowered. In the diaper 100 of the first embodiment, as shown in FIG. 3, the central portion M of the convex portion 4 formed in a pattern different from each other and the side portions S and S on both sides thereof are used to span the diaper 100. The entire length direction is formed. However, in the absorbent article of the present invention, the region including the plurality of continuous convex portions 40 having the curved portion R may be formed only in any part of the longitudinal direction of the article, for example, only It is formed in the crotch portion C, is formed only in the abdominal side portion A, or is formed only in the back side portion B. The plurality of continuous convex portions 40 having the curved portion R are formed at least in the lower portion C of the diaper 100 in the longitudinal direction Xa so that the continuous convex portion region which is not easily crushed is located near the discharge point, so that it can be formed in the region It is preferable that the ventilation path (continuous concave portion) functions effectively to remove the moistening factor. Further, from the viewpoint of making the continuous convex portion region which is not easily crushed closer to the excretion point, the plurality of continuous convex portions 40 having the curved portion R are preferably formed at least at the central portion in the width direction of the crotch portion. The region including the plurality of continuous convex portions 40 having the curved portion R is further preferably formed from the lower portion C of the lower portion and to either or both of the front side portion A and the back side portion B, or across the absorbent body 14 The overall length is preferably the total length of the diaper 100. As shown in FIG. 5, an embossed region E which is curved in the same manner as the continuous convex portion 40 is formed between the continuous convex portions 40 in the central portion M of the composite sheet 10. In other words, in the first direction X, the continuous convex portion 40 and the embossed region E which are not joined between the first sheet 1 and the second sheet 2 are alternately arranged. In the embossed region E, the first joining portion 31 and the second joining portion 32 are formed as the joint portion 3 in which the first sheet 1 and the second sheet 2 which are laminated are partially joined by embossing. The first joint portion 31 has a rectangular shape having a long shape in the first direction X, and has four square-shaped second joint portions 32 having one side of the same length as the short side of the rectangular shape of the first joint portion 31. The respective corner portions are placed in a state in which the four corner portions of the first joint portion 31 face each other in the vicinity of the first joint portion 31. Thereby, one set of joint portion groups 30 including one first joint portion 31 and four second joint portions 32 located around the first joint portion 31 is formed. In each of the embossed regions E, a joint portion group 30 having the same configuration is disposed at a fixed interval in the second direction Y so as to be curved in the same manner as the continuous convex portion 40, and the adjacent joint portion group 30 is disposed in the second direction Y. The third joint portion 33 having the same shape as the second joint portion 32 is interposed. In the embossed area E of the central region M of the composite sheet 10 used in the first embodiment, the groove portion 5 having a lower height than the continuous convex portion 40 sandwiching both sides of the embossed region E (see FIG. 6) The inside of the groove portion 5 serves as a main ventilation path. Further, the continuous convex portion 40 is preferably formed to extend in a substantially second direction from the viewpoint of guiding the moistening factor to the end portion of the absorbent body at a shorter distance and time without stagnation. In the central region M of the composite sheet 10, the first to third joining portions 31 to 33 are formed in the above-described manner by the embossed region E formed in a specific pattern, and are pressed from the back side when the composite sheet 10 is produced. Or sucking a portion of the first sheet 1 corresponding to the continuous convex portion 40 from the front side, and forming a continuous shape and a cross-sectional shape as shown in FIGS. 5 and 6 in the central region M of the composite sheet 10. Projection 40. Further, in the side portion S of the composite sheet 10, the joint portion 3 is formed in the state shown in Fig. 5, and the composite sheet 10 is pressed from the back side or the first side is sucked from the front side. The sheet 1 corresponds to a portion of the first convex portion 41 or the second convex portion 42 and the first convex portion that protrudes toward the skin side in a plan view shape as shown in FIG. 5 is formed in the side portion S of the composite sheet 10. The portion 41 and the second convex portion 42. The composite sheet 10 used in the first embodiment has a groove portion 5 having a lower height than the continuous convex portion 40 sandwiching both sides of the embossed region E in the embossed region E of the central region M. Further, as shown in FIG. 9, in the side portion S, a concave portion 5S continuous in a lattice shape is formed between the convex portion 4 (the first convex portion 41 and the second convex portion 42), and the air portion is formed in the side portion S. The lattice-like recesses 5S flow in a plurality of directions. The groove portion 5 through which the air flows in the width direction is formed in the center portion in the width direction of the absorbent article, and the lattice-shaped concave portion 5S through which air flows in a plurality of directions is formed in the side portion S, which can be centered. The stuffing factor generated in the region M is guided to the side portion S so as to be quickly moved away from the central portion, and is guided to the edge portion of the absorbent body without being dispersed from the central portion to other portions. Further, in a state in which the diaper 100 is spread in a planar shape as shown in FIG. 1, it is preferable that the entire or a part of the side width region S in the article width direction is covered by the three-dimensional gather forming sheet 15 or the three-dimensional gathers. Further, in terms of the uniform application of the external force to the continuous convex portion 40, the continuous convex portion 40 preferably has a center line Lc extending in the longitudinal direction Xa along the diaper 100 (item) as shown in Fig. 5 . Symmetrical shape. It is preferable that the external force is equally applied to the continuous convex portion 40 to prevent the external force such as stress during wearing from being unidirectionally concentrated and causing it to be crushed. The convex portion of the composite sheet preferably has the following constitution from the viewpoint of making the above-described one or two or more effects more effective. The height H1 (refer to FIG. 6) of the maximum height portion of the continuous convex portion 40 formed in the central region M is preferably 0.5 mm or more, more preferably 1.0 mm or more, further preferably 10 mm or less, and further preferably 5.0 mm or less, more preferably 0.5 mm or more and 10 mm or less, further preferably 1.0 mm or more and 5.0 mm or less. Further, the height of the first convex portion 41 which is the convex portion having the largest height in the side portion S is preferably 0.3 mm or more, more preferably 0.6 mm or more, further preferably 4.0 mm or less, and further preferably 3.0 mm or less, more preferably 0.3 mm or more and 4.0 mm or less, further preferably 0.6 mm or more and 3.0 mm or less. Regarding the composite sheet, the height of the convex portion 4 is defined as the distance from the lower surface of the second sheet 2 to the upper surface of the first sheet 1 as shown in FIG. In addition, the height is set to a value obtained by observing the cross section of each convex portion using a digital microscope (manufactured by Keyence) and measuring the shortest distance between the lower surface of the second sheet 2 and the top of the convex portion. Further, the length L1 (see FIG. 7) of the continuous convex portion 40 in the second direction Y is preferably 0.9 times or more, and more preferably 5 times or more, and more preferably 5 times or more, along the length L2 (see FIG. 7) in the first direction X. It is preferably 50 times or less, more preferably 25 times or less, further preferably 0.9 times or more and 50 times or less, and further preferably 5 times or more and 25 times or less. Further, the maximum depth d (see FIG. 7) of the curved concave portion C4 of the continuous convex portion 40 is preferably 10% or more, and more preferably 15% of the length L2 (see FIG. 7) of the continuous convex portion 40 in the first direction X. More preferably, it is 90% or less, more preferably 70% or less, further preferably 10% or more and 90% or less, and further preferably 15% or more and 70% or less. Further, the distance P between the adjacent convex portions 40 in the first direction X (the distance between the same positions) is preferably 15 of the length L2 of the continuous convex portion 40 along the first direction X (refer to FIG. 7). % or more, more preferably 100% or more, further preferably 300% or less, further preferably 200% or less, further preferably 15% or more and 300% or less, further preferably 100% or more and 200% or less. . Further, the length L1 (see FIG. 7) of the continuous convex portion 40 in the second direction Y is preferably 20% or more of the minimum width L (see FIG. 1) of the lower portion C of the diaper 100 (absorbent article), and further It is preferably 30% or more, more preferably 90% or less, further preferably 50% or less, further preferably 20% or more and 90% or less, and further preferably 30% or more and 50% or less. Further, the length L1 (see FIG. 7) of the continuous convex portion 40 in the second direction Y is preferably 20 mm or more, more preferably 50 mm or more, further preferably 200 mm or less, and further preferably 100 mm. Hereinafter, it is preferably 20 mm or more and 200 mm or less, and more preferably 50 mm or more and 100 mm or less. In the same manner as the method described in Japanese Laid-Open Patent Publication No. 2015-112343, the strip-shaped first sheet 1 is supplied to the first surface of the meshing shape. After the first sheet 1 is deformed into an uneven shape between the first roll and the second roll, the first sheet 1 is moved from the meshing portion along the peripheral surface of the first roll, and then overlaps with the first sheet 1 The second sheet 2 is supplied, and the two sheets 1 and 2 are sandwiched between the convex portions of the first roller and the heating roller under heating to be partially joined. Further, at this time, the uneven shape of the first roller and the second roller and the pattern of the joint portion formed by the first roller and the heating roller are different from the central portion and the side portion of the first sheet. Further, when the first sheet 1 is engaged with the meshing portion between the first roller and the second roller and deformed into an uneven shape, it is preferable to suck the first sheet toward the inside of the roller to promote the first sheet 1 The sheet 1 is deformed in a concavo-convex shape. Next, a second embodiment of the present invention will be described. The disposable diaper of the absorbent article according to the second embodiment has a central region M in which a convex portion and a joint portion are formed in a pattern shown in FIG. 10 instead of the central region M and the side region S of the composite sheet 10, and The composite sheet of the side portion S serves as a composite sheet constituting the front sheet. Similarly to the composite sheet 10, in the central region M of the composite sheet shown in Fig. 10, a plurality of continuous convex portions 40 each having a curved portion as a whole are formed at intervals in the first direction X. Therefore, the same effects as in the case of using the above composite sheet 10 can be achieved. The present invention has been described above based on preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and can be appropriately modified. For example, the shape and arrangement of the respective joint portions constituting the embossed region E can be appropriately determined, and the shape of each joint portion can be circular, elliptical, oblong, triangular, quadrangular, pentagonal, or the like in addition to a rectangular shape or a square shape. Any shape such as hexagon, star, heart, or triangle. The embossed region E sandwiching the continuous convex portion 40 is preferably curved in a shape substantially the same as that of the continuous convex portion 40 as a whole. Further, the composite sheet of the present invention may have two regions in which one region is formed with a plurality of continuous convex portions having curved portions which are convexly curved toward the front end 1a side of the article longitudinal direction Xa, and the other region is formed with A plurality of continuous convex portions having curved portions that are convex and curved toward the end 1b side of the article longitudinal direction Xa. Moreover, the absorbent article of the present invention may also be a shorts-type (sleeve-through type) disposable diaper, or may be a short-sleeved or ordinary non-pants type menstrual sanitary napkin, or an incontinence pad or a sanitary pad. Etc., instead of the unfolded disposable diaper. In the above embodiment, the present invention further discloses the following absorbent article. <1> An absorbent article comprising: a front sheet comprising a composite sheet; a back sheet; and an absorbent body disposed between the sheets, wherein the composite sheet has a first direction along a longitudinal direction of the article And the second sheet in the width direction of the article, and the laminated first sheet and the second sheet are joined to each other at a plurality of joint portions, and the first sheet is separated from the second sheet at a portion other than the joint portion. a convex portion protruding toward the skin side of the wearer is formed in the direction, and the composite sheet is formed as a plurality of continuous convex portions extending in the second direction at intervals in the first direction. The plurality of continuous convex portions have a curved portion which is convexly curved toward the front end side or the rear end side in the longitudinal direction of the article when the composite sheet is viewed from above. <2> The absorbent article according to the above <1>, wherein each of the continuous convex portions has only one of the curved portions. <3> The absorbent article according to the above <1>, wherein the entire continuous convex portion is convexly curved toward the front end side or the rear end side in the longitudinal direction of the article. The absorbent article according to any one of the above aspects, wherein the convex portions of the plurality of continuous convex portions have the same convex orientation. The absorbent article according to any one of the above aspects, wherein the absorbent article has a ventral side portion disposed on the ventral side of the wearer when worn, and is disposed on the back side of the wearer when worn. The back side portion and the lower portion between the front side portion and the back side portion, and a plurality of the continuous convex portions are formed at least in the lower portion of the crotch. The absorbent article according to any one of the above aspects, wherein the continuous convex portion has a shape that is bilaterally symmetrical with respect to a center line extending in a longitudinal direction of the article. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side The convex portion (the first convex portion and the second convex portion) formed in the side region is formed in a pattern different from the continuous convex portion which is a convex portion formed in the central region. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side In the region, the arrangement and the shape of the convex portion of the composite sheet are different from the pair of side regions in the central region. The absorbent article of any one of the above-mentioned <1> to <8> which has a central region in which a plurality of the above-mentioned continuous convex portions are formed, and a side region on both sides of the central region The convex portion is formed in a scattered shape in the side portion, and a concave portion continuous in a lattice shape is formed between the convex portions. The absorbent article according to any one of the above-mentioned items, wherein the central portion of the convex portion formed in a pattern different from each other and one of the two sides of the convex portion are It is formed so as to span the entire length of the above-mentioned absorbent article. The absorbent article according to any one of the above-mentioned items, wherein the article has a curved portion which is convexly curved toward the front end side in the longitudinal direction of the article when the composite sheet is viewed from the top, and the length direction of the article is In the longitudinal direction of the absorbent article, the distal end side is placed on the side of the wearer's ventral side when worn. The absorbent article according to any one of the above aspects, wherein the absorbent article has a ventral side portion disposed on the ventral side of the wearer when worn, and is disposed on the back side of the wearer when worn. The back side portion and the lower portion between the front side portion and the back side portion, and the plurality of continuous convex portions are formed at least at a central portion in the width direction of the crotch portion. The absorbent article according to any one of the above aspects, wherein the absorbent article has a ventral side portion disposed on the ventral side of the wearer when worn, and is disposed on the back side of the wearer when worn. a back side portion, and a lower portion between the front side portion and the back side portion, and a region including the plurality of continuous convex portions having the curved portion is preferably from the lower portion of the lower portion to the ventral portion And forming either or both of the back side portions. The absorbent article according to any one of the above aspects, wherein the absorbent article has an absorbent body, and comprises a plurality of regions of the continuous convex portion having the curved portion, and is preferably a cross. Further, the total length of the absorbent body is preferably the total length of the absorbent article. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side And an embossed region that is curved in the same manner as the continuous convex portion between the continuous convex portions in the central region of the composite sheet, and the first sheet and the first sheet in the first direction X The continuous convex portion and the embossed region which are not joined between the two sheets are alternately arranged. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on the opposite side An embossed region that is curved in the same manner as the continuous convex portion is formed between the continuous convex portions in the central region of the composite sheet, and the embossed region of the central region of the composite sheet is A groove portion having a lower height than the continuous convex portion sandwiching both sides of the embossed region. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side An embossed region that is curved in the same manner as the continuous convex portion is formed between the continuous convex portions in the central region of the composite sheet, and the embossed region sandwiching the continuous convex portion is preferably a whole The upper surface is curved in substantially the same shape as the continuous convex portion. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one of the two sides of the central portion is located on the opposite side a region in which the constituent resin of one or both of the first sheet and the second sheet is melt-solidified in each of the joint portions of the central portion and the side portion. Further, in each of the joint portions, the first sheet and the second sheet are higher in density than the other portions (portions other than the joint portion). The absorbent article according to any one of the above-mentioned items, wherein the nonwoven fabric is used as a non-woven fabric when the nonwoven fabric is used as the sheet material constituting the first sheet and the second sheet. The basis weight of the nonwoven fabric constituting the sheet material of the first sheet and the second sheet is preferably 10 g/m ² or more, more preferably 15 g/m ² or more, and further preferably 40 g/ It is m ² or less, more preferably 35 g/m ² or less. The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side The height of the region and the maximum height portion of the continuous convex portion formed in the central region is preferably 0.5 mm or more, more preferably 1 mm or more, further preferably 10 mm or less, and further preferably 5 mm or less. . The absorbent article according to any one of the above aspects, wherein the central portion of the convex portion is formed in a pattern different from each other and one side of the central portion is located on one side The height of the first convex portion, which is the highest height of the convex portion formed in the side region, is preferably 0.3 mm or more, more preferably 0.6 mm or more, further preferably 4 mm or less, and further preferably 3 mm or less. The absorbent article according to any one of the above aspects, wherein the length of the continuous convex portion in the second direction is preferably 0.9 times or more the length along the first direction, and further It is preferably 5 times or more, more preferably 50 times or less, still more preferably 25 times or less. The absorbent article according to any one of the above aspects, wherein the maximum depth of the curved concave portion of the continuous convex portion that is concavely curved is preferably the first direction of the continuous convex portion. The length is 10% or more, more preferably 15% or more, further preferably 90% or less, and further preferably 70% or less. The absorbent article according to any one of the above aspects, wherein the distance between the continuous convex portions adjacent to each other in the first direction (p distance between the same position) is preferably The length of the continuous convex portion in the first direction is 15% or more, more preferably 100% or more, further preferably 300% or less, and further preferably 200% or less. The absorbent article according to any one of the above aspects, wherein the absorbent article has a ventral side portion disposed on the ventral side of the wearer when worn, and is disposed on the back side of the wearer when worn. a back side portion and a lower portion between the front side portion and the back side portion, and a length L1 of the continuous convex portion along the second direction is preferably a minimum width of the lower portion of the absorbent article 20% or more, further preferably 30% or more, further preferably 90% or less, further preferably 50% or less. [Industrial Applicability] According to the absorbent article of the present invention, the top of the continuous convex portion is soft, the skin on the side of the skin is more pleasant to the touch, and the convex portion is less likely to be crushed, and the ventilation path between the convex portions is stably obtained. It is excellent in gas permeability and moisture tightness.

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16‧‧‧腿部彈性構件
17‧‧‧黏扣帶
18‧‧‧著扣區域
30‧‧‧接合部群
31‧‧‧第1接合部
32‧‧‧第2接合部
33‧‧‧第3接合部
40‧‧‧連續凸部
41‧‧‧第1凸部
42‧‧‧第2凸部
100‧‧‧拋棄式尿布
A‧‧‧腹側部
B‧‧‧背側部
C‧‧‧胯下部
C4‧‧‧彎曲凹部
d‧‧‧深度
E‧‧‧壓紋區域
H1‧‧‧高度
L‧‧‧寬度
L1‧‧‧長度
L2‧‧‧長度
Lc‧‧‧中央線
M‧‧‧中央區域
P‧‧‧間距
R‧‧‧彎曲部分
S‧‧‧側部區域
X‧‧‧第1方向
Xa‧‧‧物品長度方向
Y‧‧‧第2方向
Ya‧‧‧物品寬度方向1‧‧‧1st sheet
1a‧‧‧ front end
1b‧‧‧ backend
2‧‧‧2nd sheet
3‧‧‧ joints
4‧‧‧ convex
4s‧‧‧ end
5‧‧‧ slot department
5S‧‧‧ recess
10‧‧‧Composite sheets
12‧‧‧Front sheet
13‧‧‧Back sheet
14‧‧‧Acceptor
14a‧‧‧Absorbent core
14b‧‧‧Package
15‧‧‧Sheet
15a‧‧‧Flexible components
16‧‧‧ Leg elastic members
17‧‧‧Buckle tape
18‧‧‧ buckle area
30‧‧‧Intersection group
31‧‧‧1st joint
32‧‧‧2nd joint
33‧‧‧3rd joint
40‧‧‧Continuous convex
41‧‧‧1st convex
42‧‧‧2nd convex
100‧‧‧Disposable diapers
A‧‧‧ ventral side
B‧‧‧Back side
C‧‧‧胯下下
C4‧‧‧Bending recess
D‧‧‧depth
E‧‧‧ embossed area
H1‧‧‧ Height
L‧‧‧Width
L1‧‧‧ length
L2‧‧‧ length
Lc‧‧‧Central Line
M‧‧‧Central Area
P‧‧‧ spacing
R‧‧‧Bend section
S‧‧‧Side area
X‧‧‧1st direction
Xa‧‧‧ article length direction
Y‧‧‧2nd direction
Ya‧‧‧ article width direction

圖1係表示作為本發明之吸收性物品之一實施形態的拋棄式尿布之基本構成之俯視圖。圖2係圖1之II-II線剖視圖。圖3係表示第1實施形態之拋棄式尿布之正面片材(複合片材)之俯視圖。圖4係將於第1實施形態中用作正面片材之複合片材之一部分放大而表示之立體圖。圖5係圖3之局部放大俯視圖。圖6係圖5之VI-VI線模式剖視圖。圖7係用以說明第1實施形態中所使用之複合片材之連續凸部之較佳的尺寸及配置之模式俯視圖。圖8(a)～圖8(c)係表示本發明中之連續凸部之另一形態之模式俯視圖(相當於圖7之圖)。圖9係第1實施形態中所使用之複合片材之中央區域與側部區域之交界部附近之放大俯視圖。圖10係將第2實施形態中所使用之複合片材之配設於胯下部之一部分放大而表示之放大俯視圖。Fig. 1 is a plan view showing a basic configuration of a disposable diaper as an embodiment of the absorbent article of the present invention. Figure 2 is a cross-sectional view taken along line II-II of Figure 1. Fig. 3 is a plan view showing a top sheet (composite sheet) of the disposable diaper according to the first embodiment. Fig. 4 is a perspective view showing a part of a composite sheet used as a front sheet in the first embodiment in an enlarged manner. Figure 5 is a partially enlarged plan view of Figure 3. Figure 6 is a cross-sectional view taken along line VI-VI of Figure 5. Fig. 7 is a schematic plan view for explaining a preferred size and arrangement of continuous convex portions of the composite sheet used in the first embodiment. 8(a) to 8(c) are schematic plan views showing the other form of the continuous convex portion in the present invention (corresponding to Fig. 7). Fig. 9 is an enlarged plan view showing the vicinity of a boundary portion between a central portion and a side portion of the composite sheet used in the first embodiment. Fig. 10 is an enlarged plan view showing an enlarged portion of a composite sheet used in the second embodiment in a lower portion of the crotch.

3‧‧‧接合部 3‧‧‧ joints

4‧‧‧凸部 4‧‧‧ convex

30‧‧‧接合部群 30‧‧‧Intersection group

31‧‧‧第1接合部 31‧‧‧1st joint

32‧‧‧第2接合部 32‧‧‧2nd joint

33‧‧‧第3接合部 33‧‧‧3rd joint

40‧‧‧連續凸部 40‧‧‧Continuous convex

41‧‧‧第1凸部 41‧‧‧1st convex

42‧‧‧第2凸部 42‧‧‧2nd convex

E‧‧‧壓紋區域 E‧‧‧ embossed area

Lc‧‧‧中央線 Lc‧‧‧Central Line

M‧‧‧中央區域 M‧‧‧Central Area

S‧‧‧側部區域 S‧‧‧Side area

X‧‧‧第1方向 X‧‧‧1st direction

Xa‧‧‧物品長度方向 Xa‧‧‧ article length direction

Y‧‧‧第2方向 Y‧‧‧2nd direction

Ya‧‧‧物品寬度方向 Ya‧‧‧ article width direction

Claims

An absorbent article comprising a front sheet comprising a composite sheet, a back sheet, and an absorbent body disposed between the sheets, wherein the composite sheet has a first direction along the longitudinal direction of the article and an article along the article In the second direction in the width direction, the laminated first sheet and the second sheet are joined to each other at a plurality of joint portions, and the first sheet protrudes away from the second sheet at a portion other than the joint portion. a convex portion that protrudes toward the skin side of the wearer is formed, and the composite sheet has a plurality of continuous convex portions extending in the second direction at intervals in the first direction as the convex portion, and a plurality of The continuous convex portion has a curved portion which is convexly curved toward the front end side or the rear end side in the longitudinal direction of the article when the composite sheet is viewed from above.

The absorbent article of claim 1, wherein each of said continuous convex portions has only one of said curved portions.

The absorbent article according to claim 1 or 2, wherein the entirety of each of the continuous convex portions is convexly curved toward the front end side or the rear end side in the longitudinal direction of the article.

The absorbent article of claim 1 or 2, wherein the projections of the curved portions of the plurality of continuous convex portions are aligned in the same direction.

The absorbent article of claim 1 or 2, wherein the absorbent article has a ventral side portion disposed on a ventral side of the wearer when worn, a back side portion disposed on a back side of the wearer when worn, and located on the ventral side a lower portion between the portion and the back side portion, and a plurality of the continuous convex portions are formed at least in the lower portion of the crotch.

The absorbent article of claim 1 or 2, wherein said continuous convex portion has a shape that is bilaterally symmetrical with respect to a center line extending in a longitudinal direction of the article.

The absorbent article according to claim 1 or 2, which has a central portion in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central portion, and is formed in the side portion The convex portion is formed in a pattern different from the continuous convex portion which is a convex portion formed in the central region.

An absorbent article according to claim 1 or 2, which has a central portion in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central portion, and the convex portion of the composite sheet The arrangement and shape of the portion are different from the pair of side regions in the central region.

An absorbent article according to claim 1 or 2, which has a central portion in which a plurality of said continuous convex portions are formed, and a side portion on both sides of the continuous convex portion, and is scattered in the side portion The convex portions are formed in a dot shape, and a concave portion continuous in a lattice shape is formed between the convex portions.

The absorbent article of claim 1 or 2, wherein the central portion of the convex portion formed in a pattern different from each other and one of the two sides of the convex portion are straddle the longitudinal direction of the absorbent article The full length is formed.

The absorbent article according to claim 1 or 2, wherein each of said continuous convex portions has a curved portion which is convexly curved toward a front end side in the longitudinal direction of the article when said composite sheet is viewed from above, and said article longitudinal direction is said absorbent In the longitudinal direction of the article, the front end side is placed on the side of the wearer's ventral side when worn.

The absorbent article of claim 1 or 2, wherein the absorbent article has a ventral side portion disposed on a ventral side of the wearer when worn, a back side portion disposed on a back side of the wearer when worn, and located on the ventral side The lower portion between the portion and the back side portion, and the plurality of continuous convex portions are formed at least at a central portion in the width direction of the crotch portion.

The absorbent article of claim 1 or 2, wherein the absorbent article has a ventral side portion disposed on a ventral side of the wearer when worn, a back side portion disposed on a back side of the wearer when worn, and located on the ventral side a portion of the lower portion between the portion and the back side portion, and including a plurality of the continuous convex portions having the curved portion, spanning from the lower portion of the crotch and to either or both of the front side portion and the back side portion Formed by the people.

The absorbent article according to claim 1 or 2, wherein the absorbent article has an absorbent body, and the region including the plurality of continuous convex portions having the curved portion spans the entire length of the absorbent body.

The absorbent article of claim 1 or 2, which has a central region in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central region, and is in the above-mentioned composite sheet An embossed region that is curved in the same manner as the continuous convex portion is formed between the continuous convex portions in the central region, and the continuous convex portion that is not joined between the first sheet and the second sheet in the first direction The portion and the embossed area are alternately arranged.

The absorbent article of claim 1 or 2, which has a central region in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central region, and is in the above-mentioned composite sheet An embossed region that is curved in the same manner as the continuous convex portion is formed between the continuous convex portions in the central region, and the embossed region of the central region of the composite sheet is on both sides of the embossed region The continuous convex portion is a groove portion having a lower height.

The absorbent article of claim 1 or 2, which has a central region in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central region, and is in the above-mentioned composite sheet An embossed region that is curved in the same manner as the continuous convex portion is formed between the continuous convex portions in the central region, and the embossed region sandwiching the continuous convex portion as a whole is curved in substantially the same shape as the continuous convex portion.

The absorbent article according to claim 1 or 2, which has a central region in which the convex portion is formed in a pattern different from each other and a side region on both sides of the central region, and is in the central region and the side Each of the joint portions in the portion region is in a state in which the constituent resins of the constituent fibers of one or both of the first sheet and the second sheet are melt-solidified, and each of the joint portions is further The first sheet and the second sheet are both higher in density than the portions other than the joint portion.

The absorbent article according to claim 1 or 2, wherein the non-woven fabric is used as the first sheet and the first sheet when the nonwoven fabric is used as the sheet material constituting the first sheet and the second sheet. The basis weight of the nonwoven fabric of the sheet material of 2 sheets is 10 g/m ² or more and 40 g/m ² or less.

The absorbent article according to claim 1 or 2, which has a central region in which the convex portion is formed in a pattern different from each other, and a side region on one side of the central region, and is formed in the central region The height of the maximum height portion of the continuous convex portion is 0.5 mm or more and 10 mm or less.

The absorbent article according to claim 1 or 2, which has a central portion in which the convex portion is formed in a pattern different from each other and a side portion on both sides of the central portion, and is formed in the side portion The height of the first convex portion, which is the largest convex portion, is 0.3 mm or more and 4 mm or less.

The absorbent article according to claim 1 or 2, wherein the length of the continuous convex portion in the second direction is 0.9 times or more and 50 times or less the length along the first direction.

The absorbent article according to claim 1 or 2, wherein a maximum depth of the curved concave portion of the continuous convex portion that is concavely curved is 10% or more and 90% or less of the length of the continuous convex portion along the first direction.

The absorbent article according to claim 1 or 2, wherein a distance between the continuous convex portions adjacent to each other in the first direction is 15% or more and 300% or less of a length of the continuous convex portion along the first direction.

The absorbent article of claim 1 or 2, wherein the absorbent article has a ventral side portion disposed on a ventral side of the wearer when worn, a back side portion disposed on a back side of the wearer when worn, and located on the ventral side The lower portion between the portion and the back side portion, and the length of the continuous convex portion in the second direction is 20% or more and 90% or less of the minimum width of the crotch portion of the absorbent article.