200918028 九、發明說明 【發明所屬之技術領域】 本發明，係關於吸收性物品，更詳之，係關於在前後 的襟翼部之剛性具備有特徵的吸收性物品。 【先前技術】 以往，作爲用以吸收體液等之排泄物的吸收性物品， 例如，有使用生理用衛生棉、平曰用棉墊、吸尿棉墊等。 此等吸收性物品，具備有：吸收保持體液等之吸收體、及 覆蓋該吸收體的肌膚擋接面側之表面的透液性之表面薄片 、以及覆蓋相當於吸收體之著衣側的非肌膚擋接面側之背 面的不透液性之背面薄片。而，從位於該吸收性物品之長 邊方向的吸收體端部朝向外側的表面薄片或背面薄片之部 分，稱之爲前後襟翼部。於前後襟翼部，在吸收性物品之 外周緣處，有形成有將上述表面薄片與上述背面薄片藉由 壓花密封等予以接合之接合區域的情形。 作爲該前後襟翼部之一例，例如於日本特開 2〇04- 1 95709號公報（以下，稱專利文獻1)，揭示有一 種其具備有夾介於表面薄片與吸收體之間，且從至少產品 前端部延伸存在至後端部之，由膨鬆度高的不織布所構成 之體液滲透性第二薄片，並且第二薄片之產品前後端部， 係被夾於表面薄片與背面薄片間且被熱壓著，而襟翼部被 一體化之體液吸收性物品，且爲在一體化之前，第二薄片 被預先壓密化的體液吸收性物品。 -5- 200918028 【發明內容】 [發明所欲解決之技術問題] 一般，於貼附於內褲地裝著之吸收性物品’若上述之 前後襟翼部太柔軟，則在穿著中或貼附於內褲並往上提的 過程，會有吸收體以端部爲起點朝向長邊方向折彎之情形 產生。其中主要爲前後襟翼部朝向肌膚面側折彎之情形較 多，於此場合，會有覆蓋到吸收面而誘發外漏，或前後襟 翼部之端部擋接到肌膚產生異物感之情形。又，相反的朝 向內褲側折彎時，由於會部分地增加厚度故亦會產生異物 感。 又，於具備有上述之接合區域的吸收性物品或專利文 獻1之體液吸收性物品，在接合區域或熱壓著由壓花圖案 所形成之場合，由於以壓花部及非壓花部之交界，或非壓 花部爲起點，折彎彎曲剛性朝向長邊方向更降低，故前後 襟翼部很容易地就折彎。 又，該壓花圖案亦被思及作成朝向長邊方向的線狀壓 花圖案或是面狀之平坦圖案。於此場合，朝向長邊方向具 有連續密度提高的部分，故長邊方向之折彎彎曲剛性會比 壓花加工之前更高，不過同時厚度也變薄，故不能得到充 分之彎曲剛性。 [解決問題之技術手段] 本發明者群’爲了達成上述目的，發現藉由使位於前 -6- 200918028 後襟翼部之長邊方向及寬幅方向的彎曲剛性相異，可有效 防止漏出或異物感，而本發明臻於完成。亦即，本發明提 供以下者。 (1 )具備有：其至少一部分爲透液性的表面薄片、 及具有不透液性之薄片的背面薄片、以及被配置於上述表 面薄片與上述背面薄片間之吸收體的縱長狀之吸收性物品 ，其特徵爲： 於該吸收性物品之長邊方向兩端的外周緣，形成有接 合上述表面薄片與上述背面薄片之接合區域， 在從位於上述吸收性物品之長邊方向的上述吸收體之 分別兩端部，到與該兩端部相向之上述接合區域的內周緣 之襟翼部剛性區域之至少一方， 上述長邊方向之彎曲剛性値，爲比上述吸收性物品的 寬幅方向之彎曲剛性値還大。 (2 )如（1 )所記載之吸收性物品，其中位於上述襟 翼部剛性區域之至少一方的上述表面薄片， 爲由交互地具備有：延伸於上述長邊方向地形成之， 複數條溝部與凸狀部的不織布所構成， 上述複數條凸狀部分別之側緣區域，爲沿著上述長邊 方向之纖維定向（〇rientati〇n)，並且’ 上述側緣區域之纖維密度，爲比上述凸狀部之平均纖 維密度還咼。 (3 )如（1 )或是（2 )所記載之吸收性物品，其中 上述長邊方向之彎曲剛性値’根據KES法之彎曲剛性値 200918028 B 爲 0.15gf· cm2/cm 以上 l.Ogf· cm2/cm 以下。 [發明之效果] 根據本發明，於穿著中或貼附於內褲並往上提的過程 ’可防止以吸收體端部爲起點朝向長邊方向折彎。並且由 於可容易地朝向寬幅方向折彎，而易於沿著身體或內褲朝 向寬幅方向彎曲，故可降低異物感並提高合貼性。 【實施方式】 以下，作爲有關本發明之吸收性物品，以生理用衛生 棉爲例予以說明。 <整體構成> 如第1圖所示，有關本發明之吸收性物品1，整體被 形成爲縱長狀。吸收性物品1，具備有至少一部分爲透液 性之表面薄片部2、及成爲防漏層之背面薄片部3、以及 吸收保持排泄物等之液體的吸收體4。 表面薄片部2，以及構成背面薄片部3的後述之背面 薄片3 0，爲沿著吸收性物品1之外周緣藉由熱壓花處理 被接合，而形成有相當於本發明之接合區域的密封部5 0 。於該實施形態，密封部5 0，係由藉由熱壓花處理而形 成之複數個壓著部5 1以及非壓著部52所構成。 表面薄片部2，如第1圖及第2圖所示，係由配置於 吸收性物品1之寬幅方向WD中央的表面薄片20、及於 200918028 表面薄片20之寬幅方向WD兩側沿著長邊方向LD配置 的側邊薄片2 1、2 1、以及配置於表面薄片20與吸收體4 間之第二薄片22所構成。 表面薄片20’爲透液性之薄片’且以覆蓋吸收體4 及第二薄片22之方式配置，並爲於吸收性物品1中擦接 於身體的薄片，使排泄物等之液體滲透過吸收體4側° $ ，表面薄片20爲交互具備有延伸於長邊方向（LD方向） 地形成之複數條溝部2 6與凸狀部2 7的不織布。又’關於 該表面薄片20容後詳細說明。 於表面薄片20，在配置有吸收體4的區域內設置有 周狀之防漏域25。防漏域25，例如爲藉由壓花加工之壓 花圖案，且對於吸收性物品1之厚度方向TD大力施以押 壓，吸收體4之厚度變小。 在位於表面薄片20的寬幅方向WD之兩側，配置有 沿著吸收性物品1之長邊方向LD的側邊薄片2 1、2 1 °側 邊薄片2 1、2 1，其位於吸收性物品1的長邊方向LD之一 部分成爲朝向寬幅方向WD外側突出之狀態，並與後述之 背面薄片3 0 —同形成側翼5 L、5R。 側邊薄片2 1、2 1，係於表面薄片20的寬幅方向WD 之兩側，藉由沿著長邊方向L D大致等間隔地形成之壓花 部以及熱熔接著劑而來與表面薄片20接合。於該實施形 態’在側邊薄片2 1、2 1上設置有花與葉的圖案之設計壓 花21a、21b，藉由該設計壓花21a、21b，側邊薄片21、 21與表面薄片20被接合一起。 -9- 200918028 第二薄片22，在吸收性物品1之配置有吸收體4 區域，爲配置於表面薄片20與吸收體4之間，在吸收 物品1之外周緣附近，如第2圖所示，爲配置於表面薄 20與背面薄片30之間。第二薄片22，係於將透液性之 片對折之狀態下配置。第二薄片22，可用與表面薄片 相同之材料形成，不過以密度比表面薄片20還高之方 形成爲理想。第二薄片22，藉由密度比表面薄片20還 ，可提高從表面薄片20來之液體移動性。 作爲第二薄片22之厚度者，以0.3mm以上爲佳， 0.3〜3.0mm之範圍內更理想，於0.6〜2.5mm之範圍內 特別理想。若比0.3 mm還小則前後襟翼部會折彎，若 過3.0mm則會產生異物感。第二薄片22之基重，以 15g/m2以上爲佳，於15〜60g/m2之範圍內更理想，於 〜50g/m2之範圍內則特別理想。若比15g/m2還小則前 襟翼部會折彎，若超過60g/m2則不僅會產生異物感亦 妨礙體液之滲透性。 位於表面薄片20及側邊薄片21之長邊方向LD的 度，係比位於吸收體4之長邊方向LD的長度還大地形 。又，位於表面薄片20之寬幅方向WD的長度，係與 於吸收體4之寬幅方向WD之長度相同或比其還大地形 〇BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article, and more particularly to an absorbent article having characteristics of the front and rear flap portions. [Prior Art] Conventionally, as an absorbent article for absorbing excrement such as a body fluid, for example, a sanitary napkin, a cotton pad for a flat file, a urine absorbent pad, or the like is used. The absorbent article includes an absorbent body that absorbs and holds a body fluid, and a liquid-permeable surface sheet covering the surface of the skin contacting surface of the absorbent body, and a non-liquid covering surface corresponding to the coating body of the absorbent body. The liquid-impermeable back sheet on the back side of the skin blocking surface side. Further, the portion of the surface sheet or the back sheet which is located outward from the end portion of the absorbent body in the longitudinal direction of the absorbent article is referred to as a front and rear flap portion. In the front and rear flap portions, a joint region where the front sheet and the back sheet are joined by embossing or the like is formed on the outer periphery of the absorbent article. An example of the front and rear flap portions is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. At least the front end portion of the product extends to the rear end portion, and the body fluid permeability second sheet composed of the non-woven fabric having a high bulkiness, and the front and rear ends of the product of the second sheet are sandwiched between the surface sheet and the back sheet. The body fluid absorbent article which is heated and pressed, and the flap portion is integrated, and is a body fluid absorbent article in which the second sheet is preliminarily pressed before integration. -5-200918028 [Summary of the Invention] [Technical Problem to be Solved by the Invention] Generally, an absorbent article attached to a panty is worn or attached to the absorbent article if the flap is too soft before and after the above. When the underpants are lifted up, there is a case where the absorbent body is bent toward the longitudinal direction with the end as a starting point. Among them, there are many cases where the front and rear flap portions are bent toward the skin surface side. In this case, there is a case where the absorption surface is covered to induce leakage, or the end portions of the front and rear flap portions are blocked from the skin to cause foreign body sensation. . Further, when the opposite side is bent toward the underwear side, a foreign body sensation is generated because the thickness is partially increased. Moreover, in the case where the absorbent article having the above-described joining region or the body fluid absorbent article of Patent Document 1 is formed by the embossing pattern in the joining region or by heat pressing, the embossed portion and the non-embossed portion are used. The boundary or the non-embossed portion is the starting point, and the bending and bending rigidity is further lowered toward the long side, so that the front and rear flap portions are easily bent. Further, the embossed pattern is also thought to be formed into a linear embossed pattern in the longitudinal direction or a planar flat pattern. In this case, since the portion having a continuous density is increased toward the longitudinal direction, the bending rigidity in the longitudinal direction is higher than that before the embossing, but the thickness is also thin, so that sufficient bending rigidity cannot be obtained. [Means for Solving the Problem] In order to achieve the above object, the inventors of the present invention found that it is possible to effectively prevent leakage or by making the bending rigidity in the longitudinal direction and the wide direction of the flap portion in the front -6-200918028 different. Foreign body sensation, and the present invention is completed. That is, the present invention provides the following. (1) comprising: a surface sheet having at least a portion thereof being a liquid permeable surface sheet; a back sheet having a liquid impermeable sheet; and an elongated absorption of the absorber disposed between the surface sheet and the back sheet The article of the present invention is characterized in that: the outer peripheral edge of the both ends in the longitudinal direction of the absorbent article is formed with a joint region for joining the surface sheet and the back sheet, and the absorbent body is located from the longitudinal direction of the absorbent article. At least one of the end portions of the respective end portions of the joint portion of the joint region facing the both end portions, the bending rigidity 长 in the longitudinal direction is larger than the width direction of the absorbent article The bending rigidity is still large. (2) The absorbent article according to (1), wherein the surface sheet located in at least one of the rigid portions of the flap portion is formed alternately and extending in the longitudinal direction, and the plurality of grooves are formed And a non-woven fabric having a convex portion, wherein a side edge region of each of the plurality of convex portions is a fiber orientation along the longitudinal direction, and a fiber density of the side edge region is a ratio The average fiber density of the above convex portions is also reduced. (3) The absorbent article according to (1) or (2), wherein the bending rigidity 値 of the long-side direction is 0.15 gf·cm 2 /cm or more according to the bending rigidity K200918028 B of the KES method. Below cm2/cm. [Effects of the Invention] According to the present invention, the process of wearing or attaching to the undergarment and lifting up can prevent the end portion of the absorbent body from being bent toward the longitudinal direction. Further, since it can be easily bent in the wide direction, it is easy to bend in the wide direction along the body or the undergarment, so that the foreign body sensation can be reduced and the fit can be improved. [Embodiment] Hereinafter, as an absorbent article according to the present invention, a sanitary napkin will be described as an example. <Overall Configuration> As shown in Fig. 1, the absorbent article 1 of the present invention is formed into a vertically long shape as a whole. The absorbent article 1 is provided with a surface sheet portion 2 having at least a part of liquid permeable property, a back sheet portion 3 serving as a leakage preventing layer, and an absorbent body 4 absorbing and holding a liquid such as excrement. The surface sheet portion 2 and the back sheet 30, which will be described later, which constitute the back sheet portion 3, are joined by heat embossing along the outer periphery of the absorbent article 1, and a seal corresponding to the joint region of the present invention is formed. Department 5 0 . In this embodiment, the sealing portion 50 is composed of a plurality of pressing portions 51 and a non-crimping portion 52 which are formed by hot embossing. As shown in FIGS. 1 and 2, the surface sheet portion 2 is formed by the surface sheet 20 disposed in the center of the absorbent article 1 in the width direction WD and on both sides of the width direction WD of the surface sheet 20 of 200918028. The side sheets 2 1 and 2 1 disposed in the longitudinal direction LD and the second sheet 22 disposed between the surface sheet 20 and the absorber 4 are formed. The surface sheet 20' is a liquid permeable sheet' and is disposed so as to cover the absorbent body 4 and the second sheet 22, and is a sheet which is wiped to the body in the absorbent article 1 to allow the liquid such as excrement to permeate and absorb. The body 4 side ° $ is a non-woven fabric having a plurality of groove portions 26 and convex portions 27 which are formed to extend in the longitudinal direction (LD direction). Further, the surface sheet 20 will be described in detail later. In the surface sheet 20, a circumferential leak-proof region 25 is provided in a region where the absorber 4 is disposed. The leakage preventing area 25 is, for example, an embossed pattern by embossing, and is strongly pressed against the thickness direction TD of the absorbent article 1, and the thickness of the absorbent body 4 becomes small. On both sides of the width direction WD of the surface sheet 20, side sheets 2 1 and 2 1 ° side sheets 2 1 and 2 1 along the longitudinal direction LD of the absorbent article 1 are disposed in the absorbent One of the longitudinal direction directions LD of the article 1 is in a state of protruding outward in the width direction WD, and the side flaps 5 L and 5R are formed in the same manner as the back sheet 30 described later. The side sheets 2 1 and 2 1 are attached to the both sides of the width direction WD of the surface sheet 20, and the surface sheets are formed by embossing portions and hot-melt adhesives which are formed at substantially equal intervals along the longitudinal direction LD. 20 joints. In this embodiment, the design embossings 21a, 21b of the pattern of flowers and leaves are provided on the side sheets 2 1 and 2 1 , and the side sheets 21, 21 and the surface sheets 20 are provided by the design embossing 21a, 21b. Being joined together. -9- 200918028 The second sheet 22 is disposed between the surface sheet 20 and the absorber 4 in the region where the absorbent article 4 is disposed in the absorbent article 1, and is located near the periphery of the absorbent article 1, as shown in Fig. 2 It is disposed between the surface thin 20 and the back sheet 30. The second sheet 22 is disposed in a state in which the liquid permeable sheet is folded in half. The second sheet 22 may be formed of the same material as the surface sheet, but is preferably formed to have a higher density than the surface sheet 20. The second sheet 22, by virtue of the density of the surface sheet 20, enhances liquid mobility from the surface sheet 20. The thickness of the second sheet 22 is preferably 0.3 mm or more, more preferably 0.3 to 3.0 mm, and particularly preferably 0.6 to 2.5 mm. If it is smaller than 0.3 mm, the front and rear flaps will be bent. If it is over 3.0 mm, foreign body sensation will occur. The basis weight of the second sheet 22 is preferably 15 g/m2 or more, more preferably 15 to 60 g/m2, and particularly preferably 〜50 g/m2. If it is smaller than 15g/m2, the front flap will be bent. If it exceeds 60g/m2, it will not only cause foreign body sensation but also impede the permeability of body fluid. The degree of the longitudinal direction LD of the surface sheet 20 and the side sheet 21 is larger than the length of the longitudinal direction LD of the absorber 4. Further, the length in the width direction WD of the surface sheet 20 is the same as or larger than the length in the width direction WD of the absorber 4.
背面薄片部3，爲於吸收性物品1構成防漏層。背 薄片部3，爲由不透液性之背面薄片3 0、及固定吸收性 品1之止滑部（圖示省略）與側翼側止滑部32L、3 2R 的 性 片 薄 20 式 筒 於 則 超 在 20 後 會 長 成 位 成 面 物 所 -10- 200918028 構成。 吸收體4，爲配置於吸收性物品1之寬幅方向w D 央，且吸收保持從身體排泄出來的排泄物等之液體。吸 體4之尺寸，係以其位於長邊方向LD及寬幅方向WD 長度比後述之表面薄片部2還小之方式形成。其結果， 收性物品1之前方緣8與後方緣9附近，沒有配置吸收 4，而在以表面薄片20、第二薄片22、背面薄片30之 序積層的狀態下，成爲朝向長邊方向L D之外側延伸而 的狀態。然後，於該積層之狀態下沿著吸收性物品1之 周緣地形成密封部5 0。其結果，從吸收體4之長邊方 的兩端部之前方緣8側端部到前方緣8形成有前襟翼 5 5，而從吸收體4之長邊方向的兩端部之後方緣9側端 到後方緣9形成有後襟翼部5 6。關於該前後襟翼部5 5 56之彎曲剛性容後詳細說明。 又，構成上述吸收性物品1之各別的構件之材料、 狀、大小等，分別可適當使用以往習知者。 <表面薄片> 作爲表面薄片20者，可使用其於不織布之一面側 大致等間隔並列形成複數條溝部26，且於複數條溝部 各別之間，形成有複數條凸狀部27者，而於複數條溝 26之各別，以藉由連結部29，形成有隔該特定間隔之 數個開口部2 8爲理想。 具備有如此之複數條溝部2 6及複數條凸狀部2 7 ’ 中 收 之 吸 體 順 出 外 向 部 部 形 以 26 部 複 並 -11 - 200918028 分別於溝部2 6形成有複數個開口部2 8的不織布，例如， 可如第3圖所示般藉由使用支撐構件100而形成。該支撐 構件1 00，係由網狀之第1支撐構件1 1 0、以及在與溝部 26正交之方向隔開特定間隔規則地配置之板狀的第2支 撐構件120所構成。 將其爲纖維集合體之纖維織網，藉由具有通氣性之支 撐構件1 〇〇從下面側支撐，並從上面側沿著複數條溝部 26之位置噴吹氣體（例如空氣流），藉由使構成該纖維 織網之纖維移動形成溝部26與凸狀部27。又，同時藉由 第2支撐構件1 20，於溝部26交互形成連結部29及開口 部28。該纖維集合體爲薄片狀，且其纖維於纖維集合體 中具備有可移動之自由度。纖維之纖維定向（orientation )、纖維疏密或是基重，爲可適當調整。藉由在表面薄片 20形成有溝部26，在溝部設置有開口部28，可得到透液 性良好之吸收性物品1。 於本發明，支撐構件100，可僅爲第1支撐構件110 。於此場合，在表面薄片20之溝部26不形成開口部28 ，僅連結部29。 如此，藉由噴吹空氣流將纖維予以排列、再排列，使 複數條凸狀部27分別具備有側緣區域、及於兩側緣區域 之間厚度比側緣區域還大的中央區域。側緣區域’其纖維 密度於不織布之厚度方向TD大致均等，並且具備有比位 於把側緣區域與中央區域加起來之整體的凸狀部27之平 均纖維密度還高的纖維密度。又，中央區域，其纖維密度 -12- 200918028 於不織布之厚度方向TD大致均等’並且具備有比把位於 側緣區域與中央區域加起來之整體的凸狀部2 7之平均纖 維密度還低的纖維密度。 根據上述構成，構成凸狀部27之側緣區域的纖維於 長邊方向再排列、定向（orientation )，密度亦較高。因 此，藉由該側緣區域及凸狀部27之膨鬆性而長邊方向之 彎曲剛性變得較高。因此，即使於凸狀部2 7施加有外壓 ，亦會藉由位於中央區域之兩側的高剛性之側緣區域支撐 中央區域。藉此，複數條凸狀部27，不易被外壓等壓扁 。因此，藉由該側緣區域，長邊方向之彎曲剛性變高。又 ，藉由凸部之膨鬆性不僅折彎剛性提高，即使被折彎亦可 藉由凸部之膨鬆度回復性而易於恢復原來的形狀。藉此， 於前後襟翼部被折彎之場合，穿著者可容易地使其恢復， 又，於穿著中亦可自然恢復原來的形狀。 另一方面，藉由噴吹空氣流將纖維排列、再排列，溝 部26，其基重變得比凸狀部27還低。因此，可以溝部26 爲起點容易地朝向寬幅方向折彎。藉此，易於沿著身體或 內褲朝向寬幅方向彎曲，故可降低異物感，又，可提高合 貼性。 又，由於噴吹空氣流使纖維排列、再排列，故藉由比 較上爲使用較長纖維之梳棉法所形成的纖維織網較適合。 在藉由複數之空氣流形成溝部（凹凸化）等之後，於繼續 保持該形狀並使其不織布化者，以藉由烤箱處理（加熱處 理）使熱可塑性纖維熱熔接之氣流法爲理想。作爲適合於 -13- 200918028 該製法之纖維者，由於纖維彼此之交點會熱熔接，故以使 用芯鞘構造、並列構造之纖維爲理想，再者由鞘彼此確實 易於熱熔接的芯鞘構造之纖維來構成較爲理想。特別是， 使用由聚對苯二甲酸乙二酯與聚乙烯所構成之芯鞘複合纖 維、或由聚丙烯與聚乙烯所構成之芯鞘複合纖維較爲理想 。此等纖維，可單獨使用，或組合2種以上使用。又，纖 維長爲從20至!J 100mm，特別是從35到65mm爲理想。 作爲表面薄片20之厚度者，在0.6mm以上爲理想， 於0.6〜3.0mm之範圍內更理想，於0.7〜2.5mm之範圍內 則特別理想，於1 _ 〇〜3 · 0 m m之範圍內最爲理想。若比 0.6mm還小則前後襟翼部會折彎，若超過3.0mm則會產 生異物感。表面薄片之基重，在15g/m2以上爲理想，於 15〜60g/m2之範圍內更理想，於20〜50g/m2之範圍內則 特別理想。若比1 5 g/m2還小則前後襟翼部會折彎，若超 過60g/m2則不僅會產生異物感亦會妨礙體液之滲透性。 <襟翼部剛性區域之彎曲剛性> 如第1圖所示，在將上述之不織布作爲表面薄片20 使用之場合，須以使溝部2 6之延伸方向與吸收性物品1 之長邊方向L D —致之方式使用。藉此’如後述般’位於 前後襟翼部之長邊方向LD的彎曲剛性會提高，並且可維 持位於寬幅方向WD之柔軟性。 前襟翼部5 5，爲將前方緣8側之密封部5 0 (以區域 之寬幅而言爲位於第1圖之Υι)、以及從該內周緣至與 -14- 200918028 其相向之吸收體4的緣部之襟翼部剛性區域60 (以區域 之寬幅而言爲位於第1圖之X!)予以合起來之區域。後 襟翼部5 6，爲將後方緣9側之密封部5 0 (以區域之寬幅 而言爲位於第1圖之Y2)、以及從該內周緣至與其相向 之吸收體4的緣部之襟翼部剛性區域6 0 (以區域之寬幅 而言爲位於第1圖之Χ2)予以合起來之區域。將前襟翼 部5 5及後襟翼部5 6總括稱爲前後襟翼部。 而，於本發明，其特徵爲：於構成該前後襟翼部之襟 翼部剛性區域60的彎曲剛性，長邊方向LD之彎曲剛性 値，爲比寬幅方向WD之彎曲剛性値還大。藉由長邊方向 LD之彎曲剛性値較高，可防止在穿著中或貼附於內褲並 往上提的過程，以吸收體端部爲起點朝向長邊方向折彎， 故可消除起因於折彎之漏出或異物感。同時，因寬幅方向 WD之彎曲剛性値較低，故可容易地朝向寬幅方向折彎， 易於沿著身體或內褲朝向寬幅方向彎曲，故可降低異物感 ，又，可提高合貼性。提及具體上的數値，則長邊方向之 彎曲剛性値與寬幅方向之彎曲剛性値的差，爲根據KES 法之彎曲剛性値Β以0.05gf_ cm2/cm以上較理想。在此 ，根據KES法之彎曲剛性値B，從實際上朝向肌膚面側 折彎之場合，覆蓋吸收面，或產生襟翼部之角部擋接於肌 膚之問題來考量，爲朝向肌膚面側折彎時之剛性値較理想 〇 又，於本發明之所謂襟翼部剛性區域，係如第2圖所 示，在具有第二薄片之場合，爲含有第二薄片地構成，而 -15- 200918028 在使用熱熔等之接著劑的場合’爲亦含有接著劑之構成。 只要爲如此之構成，則可提高彎曲剛性之絕對値故理想。 又，於本發明，其成爲彎曲剛性値之測量基準的區域 爲除了前後襟翼部中之密封部5 0外的襟翼部剛性區域6 0 。此爲，若含有密封部5 0，則數値會因壓花圖案而變化 很大之故。又，對於在吸收體緣部處折彎之課題’則密封 部5 0之彎曲剛性不是問題，而於襟翼部剛性區域6 0之彎 曲剛性爲必須之故。 長邊方向之彎曲剛性的絕對値，根據KES法之彎曲 剛性値B爲在〇.15gf. cm2/cm以上較理想，在〇.15gf· cm2/cm以上1.0gf_ cm2/cm以下更爲理想，在〇.30gf· cm2/cm以上0.70gf· cm2/cm以下則特別理想。若彎曲剛 性値B未滿0.1 5gf · cm2/cm，則於穿著中或貼附於內褲並 往上提的過程，無法防止以吸收體端部爲起點朝向長邊方 向折彎故不理想。又，若超過l.Ogf · cm2/cm，則不易沿 著身體之形狀彎曲，會產生異物感，或產生縫隙而提高漏 出之危險性故爲不理想。 作爲一例，將表面薄片（第3圖所示之表面薄片20 ，爲基重35g/m2，厚度爲1.6mm)、第二薄片（由PE及 PET所構成之芯鞘纖維，將1〇〇%之纖度爲2.2dtex的纖 維，基重爲20g/m2，厚度爲〇.3mm之氣流不織布予以對 折者）、背面薄片（100%之PE，基重爲23.5g/m2)藉由 熱熔（5 g/m2 )接合之場合，作爲長邊方向之彎曲剛性値 B (朝向肌膚面側之曲時）可得到0.59gf · cm2/cm，作爲 -16- 200918028 寬幅方向之彎曲剛性値B (朝向肌膚面側之曲時）可得到 0.4 1 gf · cm2/cm。 又，在上述一例之構成中使用不同之第二薄片（基重 爲38g/m2，厚度爲〇.7mm )之場合，作爲長邊方向之彎 曲剛性値B可得到〇.95gf · cm2/cm，作爲寬幅方向之彎曲 剛性値B (朝向肌膚面側彎曲時）可得到〇.75gf · cm2/cm 。又，在上述一例之構成中沒有使用第二薄片的構成之場 合，作爲長邊方向之彎曲剛性値B可得到0.32gf · Cm2/cm ，作爲寬幅方向之彎曲剛性値B (朝向肌膚面側彎曲時） 可得到0.02gf· cm2/cm。而，於沒有使用該第二薄片之構 成，將表面薄片基重作成30gms，厚度作成1.3mm之場合 ，作爲長邊方向之彎曲剛性値B可得到0.1 9gf . cm2/cm， 作爲寬幅方向之彎曲剛性値B (朝向肌膚面側彎曲時）可 得到 O.Olgf· cm2/cm。 在此，作爲彎曲剛性値B之測量機器者，係使用加藤 科技（股）（K ato Tech Co·，Ltd )之 KES-FB2-AUTO-A ’測試片作成寬幅爲1 00mm，長度（朝向機器之夾頭差 入的方向之長度）爲l〇〇mm。KES之設定條件，爲SENS :2x1、模式：1循環，彎曲曲率：2.5cm·1，寬幅：l〇cm 。彎曲剛性値B，爲以彎曲曲率K在0.5〜1.5cm_1之範圍 內可測量之方式設定。又’由於將設定條件設爲1循環， 故會成爲「彎曲_90°β恢復原來狀態—再朝向相反側彎曲 9 〇 ° —恢復原來狀態」之工程，不過本件之彎曲剛性値Β ，爲最初彎曲-90°時之値。 -17- 200918028 又，作爲厚度之測量方法者，係使用 PEACOK公司 之UF_60A型式，把切成適度大小之各構件置於台上，使 圓盤從上掉落於下地將構件夾著，並測量此時之厚度。此 時，來自圓盤施加於各構件的荷重以成爲3g/cm2之方式 設定。又，柔軟的構件等，會有以圓盤夾住後厚度逐漸減 少之情形，不過於此時以厚度停止減少時作爲該値。 作爲用以得到本發明之彎曲剛性之構成者，不限定於 使用上述之表面薄片20之場合，亦可控制各構件之厚度 、基重、或接著劑之塗佈圖案。例如，採用於本發明之表 面薄片、第二薄片、吸收體、背面薄片，爲了防止各別之 層間的分離，以接合一起爲理想。此等接合，可單獨使用 壓花加工、超音波、熱熔型接著劑等或予以組合使用，不 過若使用連續朝向長邊方向之塗佈機塗佈，進行藉由接著 劑之接合，可提高朝向長邊方向之彎曲剛性，故較爲理想 【圖式簡單說明】 第1圖是顯示本發明之吸收性物品之一實施形態的平 面圖。 第2圖是於第1圖之Ζι-Ζι線之斷面立體圖。 桌3圖是顯不採用於本發明之表面薄片的製造方法一 例之圖。 【主要元件符號說明】 -18 - 200918028 1 :吸收性物品 2 :表面薄片部 3 :背面薄片 4 :吸收體 5 R、5 L :側翼 8 :前方緣 9 :後方緣 20 :表面薄片 2 1 :側邊薄片 21a、21b:設計壓花 2 5 :防漏域 2 6 :溝部 2 7 :凸狀部 28 :開口部 3 2 R、3 2 L :側翼側止滑部 5 0 :密封部 5 1 :壓著部 5 2 :非壓著部 5 5 :前襟翼部 5 6 :後襟翼部 60 :襟翼部剛性區域 1〇〇 :支撐構件 1 2 0 :第2支撐構件 LD :長邊方向 -19 200918028 WD :寬度方向The back sheet portion 3 constitutes a leakage preventing layer for the absorbent article 1. The back sheet portion 3 is formed of a liquid-impermeable back sheet 30 and a sliding portion (not shown) for fixing the absorbent article 1 and the side flap-side sliding portions 32L and 3 2R. Then, after 20, the president will become a face-to-face material. The absorber 4 is a liquid which is disposed in the width direction w D of the absorbent article 1 and absorbs excrement or the like excreted from the body. The size of the body 4 is formed such that its length in the longitudinal direction LD and the width direction WD are smaller than the surface sheet portion 2 to be described later. As a result, in the vicinity of the front edge 8 and the rear edge 9 of the article 1, the absorption 4 is not disposed, and in the state in which the surface sheet 20, the second sheet 22, and the back sheet 30 are laminated, the longitudinal direction LD is formed. The state in which the outside extends. Then, the sealing portion 50 is formed along the periphery of the absorbent article 1 in the state of the laminate. As a result, the front flaps 5 are formed from the end portions 8 to the front edge 8 from the end portions 8 of the long sides of the absorbent body 4, and the rear edges 9 are formed from the both end portions in the longitudinal direction of the absorbent body 4. A rear flap portion 56 is formed from the side end to the rear edge 9. The bending rigidity of the front and rear flap portions 5 5 56 will be described in detail later. Moreover, the material, shape, size, and the like of the respective members constituting the absorbent article 1 can be appropriately used in the past. <Surface Sheet> As the surface sheet 20, a plurality of groove portions 26 may be formed in parallel at substantially equal intervals on one side of the nonwoven fabric, and a plurality of convex portions 27 may be formed between the plurality of groove portions. It is preferable that each of the plurality of grooves 26 is formed with a plurality of openings 28 separated by the specific interval by the connecting portion 29. The plurality of openings 2 are formed in the groove portion 26, and the plurality of openings 2 are formed in the groove portion 26 by the plurality of the groove portions 26 and the plurality of convex portions 2 7 ' The non-woven fabric of 8, for example, can be formed by using the support member 100 as shown in Fig. 3. The support member 100 is composed of a mesh-shaped first support member 1 10 and a plate-shaped second support member 120 which is regularly arranged at a predetermined interval in the direction orthogonal to the groove portion 26. The fiber woven net which is a fiber assembly is supported from the lower side by the air permeable support member 1 ,, and a gas (for example, an air flow) is blown from the upper side along the position of the plurality of grooves 26, by The fibers constituting the fiber web are moved to form the groove portion 26 and the convex portion 27. At the same time, the connecting portion 29 and the opening portion 28 are alternately formed in the groove portion 26 by the second supporting member 120. The fiber assembly is in the form of a sheet, and the fibers have a degree of freedom of movement in the fiber assembly. The fiber orientation (orientation), fiber density or basis weight of the fiber can be appropriately adjusted. The groove portion 26 is formed in the surface sheet 20, and the opening portion 28 is provided in the groove portion, whereby the absorbent article 1 having good liquid permeability can be obtained. In the present invention, the support member 100 may be only the first support member 110. In this case, the opening portion 28 is not formed in the groove portion 26 of the surface sheet 20, and only the connecting portion 29 is formed. In this manner, the fibers are arranged and rearranged by the blowing air flow, so that the plurality of convex portions 27 are provided with a side edge region and a central region having a thickness larger than the side edge region between the side edge regions. The side edge region' has a fiber density substantially equal to the thickness direction TD of the nonwoven fabric, and has a fiber density higher than the average fiber density of the convex portion 27 which is integrated with the entire side edge region and the central region. Further, in the central region, the fiber density -12-200918028 is substantially equal in the thickness direction TD of the non-woven fabric and has a lower average fiber density than the convex portion 27 which is integrated with the side edge region and the central region. Fiber density. According to the above configuration, the fibers constituting the side edge regions of the convex portions 27 are rearranged and oriented in the longitudinal direction, and the density is also high. Therefore, the bending rigidity in the longitudinal direction is high by the bulkiness of the side edge region and the convex portion 27. Therefore, even if an external pressure is applied to the convex portion 27, the central portion is supported by the highly rigid side edge region on both sides of the central portion. Thereby, the plurality of convex portions 27 are less likely to be crushed by external pressure or the like. Therefore, the bending rigidity in the longitudinal direction is increased by the side edge region. Further, not only the bending rigidity is improved by the bulkiness of the convex portion, but also the original shape can be easily restored by the bulkiness recovery of the convex portion even if it is bent. Thereby, when the front and rear flap portions are bent, the wearer can easily restore the original shape, and the original shape can be naturally restored during wearing. On the other hand, the fibers are arranged and rearranged by the flow of the blowing air, and the groove portion 26 has a lower basis weight than the convex portion 27. Therefore, the groove portion 26 can be easily bent toward the wide direction as a starting point. Thereby, it is easy to bend in the wide direction along the body or the underpants, so that the foreign body sensation can be reduced and the splicability can be improved. Further, since the fibers are arranged and rearranged by the blowing air flow, it is preferable to use a fiber woven net formed by a carding method using long fibers. After the groove portion (concave-convex) or the like is formed by a plurality of air flows, it is preferable to continue to maintain the shape and to make it non-woven, and to heat-seal the thermoplastic fiber by oven treatment (heat treatment). As a fiber suitable for the production method of the method of the present invention, it is preferable to use a core-sheath structure or a fiber having a side-by-side structure, and it is preferable to use a core-sheath structure in which the sheaths are easily heat-sealed. Fiber is ideal for construction. In particular, it is preferred to use a core-sheath composite fiber composed of polyethylene terephthalate and polyethylene, or a core-sheath composite fiber composed of polypropylene and polyethylene. These fibers may be used singly or in combination of two or more. Further, the fiber length is preferably from 20 to !J 100 mm, particularly from 35 to 65 mm. The thickness of the surface sheet 20 is preferably 0.6 mm or more, more preferably 0.6 to 3.0 mm, and particularly preferably 0.7 to 2.5 mm, and is in the range of 1 _ 〇 to 3 · 0 mm. Most ideal. If it is smaller than 0.6mm, the front and rear flaps will be bent. If it exceeds 3.0mm, foreign body sensation will occur. The basis weight of the surface sheet is preferably 15 g/m2 or more, more preferably 15 to 60 g/m2, and particularly preferably 20 to 50 g/m2. If it is smaller than 1 5 g/m2, the front and rear flaps will be bent. If it exceeds 60 g/m2, not only the foreign body sensation but also the permeability of the body fluid will be hindered. <Bending rigidity of the rigid portion of the flap portion> As shown in Fig. 1, when the non-woven fabric is used as the surface sheet 20, the direction in which the groove portion 26 extends and the longitudinal direction of the absorbent article 1 are required. LD is used in a way. Thereby, the bending rigidity in the longitudinal direction LD of the front and rear flap portions is increased as described later, and the flexibility in the width direction WD can be maintained. The front flap portion 5 5 is a seal portion 50 on the side of the front edge 8 (in the width of the region, which is located in FIG. 1), and an absorber from the inner periphery to the side opposite to -14-180180. The edge portion of the edge portion 4 of the 4 is a region where the wing region rigid region 60 (X! in Fig. 1 is wide in the width of the region). The rear flap portion 56 is a sealing portion 50 on the side of the rear edge 9 (Y2 in the first drawing in the width of the region), and an edge portion of the absorber 4 facing from the inner periphery to the opposite side The region where the wing portion rigid region 60 (in the width of the region is located at 第2 in Fig. 1) is combined. The front flap portion 5 5 and the rear flap portion 56 are collectively referred to as front and rear flap portions. Further, the present invention is characterized in that the bending rigidity of the ridge portion rigid region 60 constituting the front and rear flap portions is such that the bending rigidity 长 in the longitudinal direction LD is larger than the bending rigidity 宽 in the width direction WD. Since the bending rigidity of the longitudinal direction LD is high, it is possible to prevent the process of wearing or attaching to the underwear and lifting up, and bending the end portion of the absorbent body toward the longitudinal direction, thereby eliminating the cause of folding Bend leakage or foreign body sensation. At the same time, since the bending rigidity WD of the wide direction WD is low, it can be easily bent toward the wide direction, and is easily bent toward the wide direction along the body or the underwear, thereby reducing the foreign body sensation and improving the conformability. . When the number is specifically referred to, the difference between the bending rigidity 长 in the longitudinal direction and the bending rigidity 宽 in the wide direction is preferably 0.05 gf_cm 2 /cm or more in accordance with the bending rigidity of the KES method. Here, according to the bending rigidity 値B of the KES method, when it is actually bent toward the skin surface side, the absorption surface is covered, or the corner portion of the flap portion is in contact with the skin, and the skin side is measured. The rigidity 値 at the time of bending is preferably ,, and the rigid region of the flap portion of the present invention is as shown in Fig. 2, and when the second sheet is provided, the second sheet is formed, and -15- 200918028 When using an adhesive such as hot melt, 'the composition also contains an adhesive. As long as it is such a configuration, it is possible to improve the absolute rigidity of the bending rigidity. Further, in the present invention, the region which becomes the measurement standard of the bending rigidity 为 is the flap portion rigid region 60 except for the sealing portion 50 in the front and rear flap portions. Therefore, if the sealing portion 50 is included, the number 値 will vary greatly due to the embossing pattern. Further, the problem of bending at the edge portion of the absorbent body is that the bending rigidity of the sealing portion 50 is not a problem, and the bending rigidity in the rigid portion 60 of the flap portion is necessary. The absolute bending of the bending rigidity in the longitudinal direction is preferably 〇15gf.cm2/cm or more, and more preferably 〇15gf·cm2/cm or more and 1.0gf_cm2/cm or less, according to the bending rigidity KB of the KES method. It is particularly preferably 〇30gf·cm2/cm or more and 0.70gf·cm2/cm or less. When the bending rigidity 未B is less than 0.1 5 gf · cm 2 /cm, it is not preferable to prevent the end portion of the absorbent body from being bent toward the long side direction during the process of wearing or attaching to the underwear and lifting it up. Further, when it exceeds 1.0 gf · cm 2 /cm, it is difficult to bend along the shape of the body, and a foreign body sensation may occur, or a gap may be formed to increase the risk of leakage, which is not preferable. As an example, the surface sheet (the surface sheet 20 shown in Fig. 3 has a basis weight of 35 g/m 2 and a thickness of 1.6 mm) and the second sheet (the core sheath fiber composed of PE and PET, 1% by weight) Fiber with a denier of 2.2 dtex, a basis weight of 20 g/m2, a thickness of 〇.3 mm, a non-woven fabric to be folded, and a back sheet (100% PE, basis weight of 23.5 g/m2) by hot melt (5 g/m2) When joining, as the bending rigidity 値B in the longitudinal direction (when facing the skin side), 0.59gf · cm2/cm can be obtained as the bending rigidity -16B in the wide direction of -16-200918028 When the skin is curved on the side of the skin, 0.4 1 gf · cm 2 /cm is obtained. Further, in the case where the second sheet (the basis weight is 38 g/m 2 and the thickness is 〇.7 mm) is used in the configuration of the above-described example, the bending rigidity 値B in the longitudinal direction can be obtained as 〇.95 gf · cm 2 /cm, As the bending rigidity 値B in the wide direction (when it is bent toward the skin side), 〇.75gf · cm2/cm can be obtained. Further, in the case where the configuration of the second sheet is not used, the bending rigidity 値B in the longitudinal direction can be 0.32 gf · Cm 2 /cm, and the bending rigidity 値 B in the wide direction (toward the skin side) When bent, 0.02 gf·cm2/cm is obtained. On the other hand, in the case where the second sheet is not used, when the surface sheet is reconstituted to 30 gms and the thickness is made 1.3 mm, the bending rigidity 値B in the longitudinal direction can be 0.19 gf.cm2/cm as the width direction. When the bending rigidity 値B (when it is bent toward the skin side), O.Olgf·cm2/cm is obtained. Here, as a measuring machine for the bending rigidity 値B, a KES-FB2-AUTO-A 'test piece of Kato Technology Co., Ltd. was used to make a width of 100 mm, and the length (oriented) The length of the direction in which the chuck of the machine is different is l〇〇mm. The setting conditions of KES are SENS: 2x1, mode: 1 cycle, bending curvature: 2.5 cm·1, width: l〇cm. The bending rigidity 値B is set so as to be measurable with a bending curvature K in the range of 0.5 to 1.5 cm_1. In addition, since the setting condition is set to one cycle, it is a project in which "bending _90 ° β returns to the original state - and then bends toward the opposite side by 9 〇 ° - restores the original state", but the bending rigidity of the piece is initially Bend at -90°. -17- 200918028 Also, as a method of measuring the thickness, the PEFOK company's UF_60A type was used, and the members cut into appropriate sizes were placed on the table, and the disc was dropped from the upper part to sandwich the member, and the measurement was carried out. The thickness at this time. At this time, the load applied from each of the discs to each member was set to be 3 g/cm 2 . Further, the soft member or the like may be gradually reduced in thickness after being caught by the disk, but at this time, the thickness is stopped when the thickness is stopped. The constitution for obtaining the bending rigidity of the present invention is not limited to the case where the above-mentioned surface sheet 20 is used, and the thickness, the basis weight, or the application pattern of the adhesive may be controlled. For example, the surface sheet, the second sheet, the absorbent body, and the back sheet used in the present invention are preferably joined together in order to prevent separation between the respective layers. These joints may be embossed, ultrasonic, hot-melt adhesive, or the like, or may be used in combination, but if they are applied by a coater that is continuously oriented in the longitudinal direction, bonding by an adhesive can be improved. It is preferable to show the bending rigidity in the longitudinal direction. [Brief Description of the Drawings] Fig. 1 is a plan view showing an embodiment of the absorbent article of the present invention. Fig. 2 is a perspective view of a section of the Ζι-Ζι line in Fig. 1. The table 3 is a view showing an example of a manufacturing method of the surface sheet which is not used in the present invention. [Description of main component symbols] -18 - 200918028 1 : Absorbent article 2 : Surface sheet portion 3 : Back sheet 4 : Absorber 5 R, 5 L : Side flap 8 : Front edge 9 : Rear edge 20 : Surface sheet 2 1 : Side sheets 21a, 21b: design embossing 2 5 : leak prevention field 2 6 : groove portion 2 7 : convex portion 28 : opening portion 3 2 R, 3 2 L : side flap side slip portion 5 0 : sealing portion 5 1 : crimping portion 5 2 : non-clamping portion 5 5 : front flap portion 5 6 : rear flap portion 60 : flap portion rigid region 1 : support member 1 2 0 : second support member LD : long side direction -19 200918028 WD: Width direction