1352588 九、發明說明： 【發明所屬之技術領域】 本發明係關於生理用衛生棉、衛生護墊、失禁護墊等之 吸收性物品。 【先前技術】 作為有關生理用衛生棉等之吸收性物品之先前技術，在 曰本特開2004-121382號公報（以下稱文獻】）中，曾記載具 備有具有配置於表面材料側之上層及配置於背面材料側之 下層之吸收體，該下層之密度係高於上層之密度之吸收性 物品。又，在文獻1中，曾記載利用壓紋加工形成凹部作 為提高下層之密度之具體的方法。 另外，在曰本特開2003-33397號公報（以下稱文獻2)中， 曾記載在吸收性物品之吸收體，配置平面視之形狀不含直 線且無凹陷形狀之麼紋凹部之吸收性物品。1352588 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to an absorbent article for sanitary napkins, sanitary pads, incontinence pads, and the like. [Prior Art] As a prior art of an absorbent article such as a sanitary napkin, it is described in Japanese Laid-Open Patent Publication No. 2004-121382 (hereinafter referred to as "the document") that it has an upper layer disposed on the surface material side and An absorbent body disposed on a lower layer of the back material side, the lower layer having a density higher than that of the upper layer. Further, in Document 1, a specific method of forming a concave portion by embossing as a function of increasing the density of the lower layer has been described. In JP-A-2003-33397 (hereinafter referred to as Document 2), it is described that the absorbent article of the absorbent article is provided with an absorbent article having a linear shape and a concave shape without a concave shape. .
[發明所欲解決之問題J 但，在文獻1所載之吸收性物品中，在吸收體之上層並 未施以壓紋加工，故上層吸收液體時，該上層會垮下，不 能充分提高對使用者之排泄部等之貼合性。 又’文獻2所載之吸收性物品由於在對應於排泄部之部 位未形成壓紋凹部’故與文獻丨同樣地，在對應於排泄部 之部位之吸收體會產生垮下部，不能提高對排泄部之點合 性。又，在文獻2所載之吸收性物品中，在對應於排泄部 之部位之吸收體也設置壓紋凹部之情形，將會損及該部位 之柔軟度。 103456.doc 1352588 因此，本發明之目的在於提供可柔軟且良好地貼合於排 泄部等’即使在穿用中，亦可良好地維持其點合性，且液 • · 體之引入性亦甚優異之吸收性物品。 \ 【發明内容】 '本發明係藉由提供下列之吸收性物品而達成上述之目 . 的：即"及收性物品係包含肌膚接觸面、非肌膚接觸面、 . 及介在此等兩面間之吸收體，前述吸收體係包含疊層上部 # °及收層與下部吸收層之疊層部分，上部吸收層係位於前述 肌膚接觸面側，下部吸收層係位於前述非肌膚接觸面側， 前述吸收體之前述疊層部分係形成在〇 5 g/cm2負載下，下 部吸收層之視密度低於上部吸收層之視密度，在2〇 g^m2 負载下，下部吸收層之視密度相同於上部吸收層之視密度 或高於上部吸收層之視密度。 發明之效果 本發明之吸收性物品可柔軟且良好地貼合於排泄部等， • 即使在穿用中’亦可良好地維持其貼合性，且液體之引入 性亦甚優異。 【實施方式】 • 以下’依據理想之實施型態，說明本發明。 作為本發明之一實施型態之生理用衛生棉丨（以下稱本衛 生棉1)如圖1、圖2⑷及圖2(b)所示，係包含肌膚接觸面 2、非肌膚接觸面3、及介在此等兩面間之保液性之吸收體 4肌膚接觸面2係在穿用時朝向穿用者之肌膚側之面，非 肌膚接觸面3係在穿用時朝向穿用者之肌膚側之相反侧之 103456.doc 1352588 面。 本術生棉1之肌膚接觸面2係構成透液性之表面薄片21， 非肌膚接觸面3係構成不透液性之背面薄片31。吸收體 被固疋於表面薄片21與背面薄片31之間。本衛生棉1具有 長度方向及寬度方向之形狀。表面薄片幻係在吸收體*之 兩側緣部附近’被接著劑等接合於背面薄片31。表面薄片 21及背面薄片31係在衛生棉丨之長度方向兩端部藉熱輝封 寻互相接合而形成密封部U。 在形成非肌膚接觸面3之背面薄片31，將黏著劑塗敷成 特定形狀，以形成防止偏移層（未圖示）。防止偏移層❹ 於將衛生棉i固；t於短褲等之安裝具上，在使用前一直受 到剝離紙或施以剝離處理之個別安裝用薄片（未圖示）所= 吞董0 作為衛生棉1之表面薄片21及背面薄片3ι之各形 料’可分別無特別限制地使用生理用衛生棉、衛生護塾、 失禁護墊等吸收性物品所使用之材料 片’最好使用透氣不織布、紡絲黏合型不織布等== 性劑施以親水化處理者，及其開孔薄片或開孔膜。又' 為背面薄片，除非透濕之膜片或透渴 、。又，作 •• 賜月外，可佶用 SMS等之不織布或與透濕膜之複合物。 作為吸收體4之形成材料，最好使用纖維隼 高分子吸水聚合物併用之材料等。作為 或八與 纖維，可使用紙聚纖維等親水性纖維 / 。體之 施以親水化處理者）。纖維集合體或复 、取于馮 ^ 阿分子吸水聚合 103456.doc 1352588 物併用之㈣等也可利料紙或透水性不織布等構成之透 Μ生包覆薄片加以包覆。高分子吸水聚合物既可以層狀存 在，亦可形成與紙聚纖維等混合之狀態。高分子吸水聚合 =具有可吸枚保存其本身重量之膽以上之液體之保存性 此’最好為具有膠化性f之粒狀聚合物，例如最好為殿 粉-丙烯酸（鹽）接枝共聚物、澱粉_丙烯腈共聚物之皂化 物、羧甲基纖維素鈉之交聯物、丙烯酸（鹽）聚合物等。 本炻生棉1之吸收體4如圖丨、圖2(a)及圖2(b)所示，係在 衛生棉1之寬度方向中央部，具有疊層上部吸收層似下 部吸收層42之*詹部分4〇。在疊層部分4〇，上部吸收層41 位於肌膚接觸面2側，下部吸收層42位於非肌膚接觸面3 側。本衛生棉1之疊層部分4〇係在衛生棉〗之長度方向，形 成略偏倚於前端部或後端部之位置。[Problem to be Solved by the Invention J However, in the absorbent article disclosed in Document 1, the embossing process is not applied to the upper layer of the absorbent body, so that when the upper layer absorbs the liquid, the upper layer may collapse and cannot be sufficiently improved. The fit of the user's excretions and the like. Further, in the absorbent article of the document 2, since the embossed concave portion is not formed in the portion corresponding to the excretion portion, the absorbent body at the portion corresponding to the excretion portion is generated in the lower portion of the absorbent article, and the excretion portion cannot be improved. Point of convergence. Further, in the absorbent article of the document 2, when the embossed concave portion is also provided in the absorbent body corresponding to the portion of the excretion portion, the softness of the portion is impaired. 103456.doc 1352588 Therefore, an object of the present invention is to provide a soft and excellent adhesion to an excretion portion or the like, which can maintain its punctuation well even when worn, and the introduction of a liquid body is also very good. Excellent absorbent article. \ [Summary of the Invention] 'The present invention achieves the above object by providing the following absorbent articles. That is, "" and the retractable article includes a skin contact surface, a non-skin contact surface, and between the two sides. In the absorbent body, the absorption system comprises a laminated upper portion #° and a laminated portion of the folded layer and the lower absorbent layer, wherein the upper absorbent layer is located on the skin contact surface side, and the lower absorbent layer is located on the non-skin contact surface side, the absorption The laminate portion of the body is formed under a load of 〇5 g/cm2, and the apparent density of the lower absorption layer is lower than the apparent density of the upper absorption layer. Under the load of 2〇g^m2, the apparent density of the lower absorption layer is the same as that of the upper portion. The apparent density of the absorbent layer is either higher than the apparent density of the upper absorbent layer. EFFECTS OF THE INVENTION The absorbent article of the present invention can be adhered to the excretion portion or the like softly and satisfactorily, and the adhesiveness can be favorably maintained even during wearing, and the liquid introduction property is excellent. [Embodiment] The following description of the present invention will be made based on an ideal embodiment. The sanitary napkin according to an embodiment of the present invention (hereinafter referred to as the sanitary napkin 1) includes a skin contact surface 2 and a non-skin contact surface 3 as shown in FIG. 1 , FIG. 2 ( 4 ) and FIG. 2 ( b ). The skin contact surface 2 of the liquid-repellent body 4 between the two surfaces is oriented toward the wearer's skin side when worn, and the non-skin contact surface 3 is oriented toward the wearer's skin side when worn. On the opposite side of the 103456.doc 1352588 face. The skin contact surface 2 of the raw cotton 1 constitutes a liquid permeable surface sheet 21, and the non-skin contact surface 3 constitutes a liquid-impermeable back sheet 31. The absorbent body is fixed between the surface sheet 21 and the back sheet 31. The sanitary napkin 1 has a shape in the longitudinal direction and the width direction. The surface sheet is attached to the back sheet 31 by an adhesive or the like in the vicinity of both side edges of the absorber *. The surface sheet 21 and the back sheet 31 are joined to each other at the both end portions in the longitudinal direction of the tampon by heat sealing to form a sealing portion U. The back sheet 31 is formed on the non-skin contact surface 3, and the adhesive is applied to a specific shape to form an offset preventing layer (not shown). Preventing the offset layer from being affixed to the sanitary napkin; t on the mounting tool such as the shorts, and the individual mounting sheets (not shown) that have been subjected to the release paper or the peeling treatment before use. The material sheet of the surface sheet 21 and the back sheet 3 of the cotton 1 can be used without any particular limitation, and the material sheet used for absorbent articles such as sanitary napkins, sanitary ailments, incontinence pads, etc., is preferably made of a breathable non-woven fabric, Spin-bonded non-woven fabrics, etc. == The agent is hydrophilized, and its apertured or apertured film. Also 'for the back sheet, unless the membrane is permeable or thirsty. In addition, for the moon, you can use a non-woven fabric such as SMS or a composite with a moisture permeable film. As a material for forming the absorbent body 4, a fiber 隼 polymer water-absorbent polymer or the like is preferably used. As the or eight and fibers, hydrophilic fibers such as paper polyfibers can be used. The body is treated with a hydrophilic treatment). The fiber assembly or complex is taken from the von A molecule water-absorbent polymerization 103456.doc 1352588 and may be coated with a translucent cover sheet composed of a paper or a water-permeable non-woven fabric. The polymer water-absorbent polymer may be present in a layered state or in a state of being mixed with paper polyfiber or the like. Polymer water-absorbent polymerization = preservability of a liquid having a gallbladder or more which can absorb its own weight. This is preferably a granular polymer having a gelatinization f, for example, preferably a powder of a temple-acrylic acid (salt). Copolymer, starch saponified product of acrylonitrile copolymer, crosslinked product of sodium carboxymethyl cellulose, acrylic acid (salt) polymer, and the like. The absorbent body 4 of the present cotton 1 is shown in FIG. 2, FIG. 2(a) and FIG. 2(b), and is attached to the central portion of the width direction of the sanitary napkin 1, and has a laminated upper absorbent layer like the lower absorbent layer 42. * Zhan part 4〇. In the laminated portion 4A, the upper absorbent layer 41 is located on the skin contact surface 2 side, and the lower absorbent layer 42 is located on the non-skin contact surface 3 side. The laminated portion 4 of the sanitary napkin 1 is attached to the longitudinal direction of the sanitary napkin to form a position slightly biased toward the front end portion or the rear end portion.
本衛生棉1之疊層部分4 〇係形成於穿用時相向配置於穿 用者之排/世部之排泄部相向部。疊層部分4〇之位置可依照 對應於穿用者之排泄部之部位存在於在衛生棉1或其他吸 收性物品之哪一位置等而適當地加以決定。 本衛生棉1之吸收體4之疊層部分40係形成在〇.5 g/cm2負 載下下。卩吸收層42之視密度低於上部吸收層4丨之視密 度但在20 g/cm2負載下，下部吸收層42之視密度相同於 上部吸收層4 1之視密度或高於上部吸收層41之視密度。 所謂在〇·5 g/cm2負載下，係假想將安裝前或開始安裝時 之衛生棉（吸收性物品）輕輕接觸肌膚之狀態之壓力。所謂 在20 g/cm負載下’係假想將衛生棉（吸收性物品）固定於 I03456.doc 知褲等之安裝具而穿用之狀態之壓力。兩種情形均假想著 靜止狀態。 在衛生棉1中，在0.5 g/cm2負載下（以下又稱低壓下）之下 部吸收層42之視密度低於上部吸收層4 1之視密度，故在安 裝衛生棉1之際，下部吸收層42可受到上部吸收層41推麼 而向厚度方向彈性變形’因此’可使疊層部分40接觸到穿 用者之肌膚之感觸柔軟，且可藉其良好之變形性而良好地 貼合於排泄部等。 又，排泄之液體可順暢地被導入上部吸收層4 1，另外， 即使上部吸收層4 1吸收液體’該上部吸收層4 1也難以誇 下’可在穿用中穩定地維持上部吸收層41乃至疊層部分4〇 之厚度及形狀。因此，在穿用中之疊層部分4〇對排泄部等 可維持良好之貼合性。 另一方面，在20 g/cm2負載下（以下又稱安裝狀態下）， 下部吸收層42之視密度相同於上部吸收層4丨之視密度或高 於上部吸收層41之視密度，因此’在安裝狀態下，可藉密 度梯度’將液體順暢地由上部吸收層41導入下部吸收層 42。因此，即使在吸收體4吸收某種程度之液體之狀態 下’也難以發生由吸收體4向肌膚接觸面之液體回流（回滲） 等之缺失，故可獲得清爽舒適之穿用感。 基於一面防止上部吸收層41吸液後之垮下，一面提高穿 用衛生棉1之際之柔軟性及貼合性之觀點，也可在低壓下 與安裝狀態下’使上部吸收層4 1與下部吸收層42之視密度 反轉（包含呈現相同之情形），基於實現液體對下部吸收層 103456.doc • 10. 1352588 4 2之良好之導入性之翻 <硯點’在低壓下，疊層部分40之上部 吸收層41之裙谅A . 在度PA較好為0 05〜〇 25 g/cm3，更好為 0.08〜0·20 g/crn〕，m _l-» 认 最好為0.10〜0.15 g/cm3，下部吸收層42 之視3密度PB較好為〇 〇5〜〇 2〇 g/cm3，更好為〇 〇5〜〇 15 g/cm最好為〇 〇8〜〇 12 g/cm3，兩者之比較好為 i.05 5·0’更好為i.1〜3,〇，最好為1.2〜2.0。 在文裝狀態下，基於實現優良之液體導入性及液體回流 防止！·生，並在低壓下使前述pA > 之關係成立之觀點， 在女裝狀態下，疊層部分40之上部吸收層41之視密度pa, 較好為0.05〜0.25 g/cm3 ’更好為〇 〇8〜〇 2〇 g/cm3，最好為 〇·1〇〜0·15 g/cm3 ’下部吸收層42之視密度pB，較好為 〇·07〜〇·3 g/cm3，更好為 〇.1〇〜0.25 g/cm3，最好為 0.12〜〇.2〇 g/cm3 ’兩者之比（PAVPB，)較好為0.20〜1.0，特好為〇·3〜〇.9〇。 另外’基於在低壓下與安裝狀態下之液體導入性之變化 較少（即液體導入性穩定化）' 抑制形狀變化而使局部之貼 合性穩定化之觀點，在上部吸收層4 1之低壓下與安裝狀態 下之視密度之比（pA/pA，）較好為1.0〜2.0，更好為 1.05〜1.5，最好為ι·〇5〜1.3。基於缓衝性良好，由上部吸 收層41對下部吸收層42之液體移動性良好之觀點，在下部 吸收層42之低壓下與安裝狀態下之視密度之比（ρΒ/ρΒ,)較 好為1.1〜3.0，特好為1.2-2.5。 上部吸收層41及下部吸收層42之視密度之測定方法係利 用以下方式進行。 <負載下之視密度之測定方法> I03456.doc 1352588 下部吸收層42被上部吸收層41擠壓時，其厚度容易減少而 使密度木幅增大。壓榨凹部41a之密度為0.2〜0.7 g/cm2，更 ' 好為〇.4〜0·6 g/cm2，此從提高液體之導入性之點而言，相 • 當理想。 :疊層部分40之上部吸收層4 1之紙漿稱量較好為ι〇〇〜5〇〇 g/cm2 ’更好為2〇〇〜400 g/cm2，在低壓下之上部吸收層41 之尽度較好為1〜5 mm，更好為2~4 mm。 籲 疊層部分4〇之下部吸收層42之稱量較好為5〇〜4〇〇 g/cm2，更好為2〇〇〜3〇〇 g/cm2，在低壓下之下部吸收層42 之厚度較好為0.5〜4 mm，更好為1〜3 mm。 在本衛生棉1中，如上所述，在疊層部分4〇之上部吸收 層41之下部吸收層42側之面上形成壓榨凹部41&，故上部 吸收層41之下部吸收層42側之面之對平面接觸面積（又稱 上部吸收層41之接觸面積）會小於下部吸收層42之上部吸 收層41側之面之對平面接觸面積（又稱下部吸收層u之接 • 觸面積）。所謂對平面接觸面積，係上部吸收層與下部吸 收層藉兩者之交界部推壓對方之面（假定為平面）之部分之 . 面積。 使上部吸收層41之接觸面積小於下部吸收層42之接觸面 積時，在安裝狀態下’上部吸收層41可藉較小面積局部地 強烈壓縮下部吸收層42。此係由於施加至上部吸收層之負 載與傳達至下部吸收層之負載視為大致相等之情/由於 上部吸收體之接觸面積在交界面變小，故在實際之接觸部 分，會施加大於接觸面積減少部分之負載（甚至於可考慮 103456.doc 13 1352588 分別由疊層部分40方向向外方延伸。使上部吸收層4ι及下 部吸收層42m少向寬度方向延伸時，可在衛生棉！ 之寬度方向t央部，形成疊層部分4〇向肌膚接觸面側突出 之隆起部，可提高對穿用者之排泄部等之貼合性。在本衛 生棉1中，如上所述，在對應於穿用者之排泄部之部位形 成隆起部，但代之，或也可與此同時，在對應於臀部之部 位等形成隆起部。 在本衛生棉1中’如圖2(a)、圖2(b)及圖3所示，在下部 吸收層42之由疊層部分40向外延伸之部分44，也利用同樣 之壓紋加工形成與上述上部吸收層41之壓榨凹部同樣 之壓榨凹部44a。在由疊層部分40延伸之部延伸部分44， 也利用壓紋加工形成壓榨凹部44a，藉此可提高與下部吸 收層42之面平行方向之液體之擴散性，可更進一步提高由 表面之液體之導入力。因此’可更進一步提高肌膚接觸面 之清爽感。又’將由疊層部分40向外延伸之部分44之對平 面接觸面積，利用上述作為上部吸收層41之接觸面積降低 機構之壓紋加工以外之方法及機構加以降低之情形，也可 獲得同樣之效果。 在安裝狀態下，上部吸收層裝入於下部吸收層内，故上 部吸收層與下部吸收層難以移位，尤其如圖丨之型態所 示’在上部吸收層較小之型態之情形相當有效。另外，如 圖1之型態所示，在與下部吸收層之接觸面具有凹凸，故 更難以移位。 本發明並非限定於上述之實施型態，在不脫離本發明之 103456.doc -16- ⑧ 1352588 趣旨之範圍内，可施行種種之變更。 例如’也可取代如衛生棉1般使下部吸收層42由疊層部 分40向外延伸，而如圖4(b)所示，使上部吸收層41延伸。 在該情形，也可在對應於排泄部之部位等形成貼合性優異 之隆起部。又，本發明之吸收體如圖4(d)或圖4(e)所示， 也可僅由疊層部分40所構成。又，也可取代如衛生棉】般 使在上部吸收層41之下部吸收層42側之面上形成壓榨凹部The laminated portion 4 of the sanitary napkin 1 is formed to face the excretory portion facing portion of the wearer's row/part of the wearer when worn. The position of the laminated portion 4〇 can be appropriately determined depending on which portion of the sanitary napkin 1 or other absorbent article is present in accordance with the portion corresponding to the excretion portion of the wearer. The laminated portion 40 of the absorbent body 4 of the sanitary napkin 1 is formed under a load of 〇5 g/cm2. The apparent density of the ruthenium absorption layer 42 is lower than the apparent density of the upper absorbing layer 4 但 but under the load of 20 g/cm 2 , the apparent density of the lower absorbing layer 42 is the same as or higher than the apparent density of the upper absorbing layer 41 . The apparent density. Under the load of 〇·5 g/cm2, it is the pressure of the state in which the sanitary napkin (absorbent article) is gently touched to the skin before installation or at the start of installation. Under the load of 20 g/cm, the pressure of the sanitary napkin (absorbent article) is fixed in the state in which the sanitary napkin (absorbent article) is attached to the mounting tool such as I03456. In both cases, the quiescent state is assumed. In the sanitary napkin 1, under the load of 0.5 g/cm 2 (hereinafter also referred to as low pressure), the apparent density of the lower absorbent layer 42 is lower than the apparent density of the upper absorbent layer 41, so when the sanitary napkin 1 is installed, the lower portion is absorbed. The layer 42 can be elastically deformed in the thickness direction by the upper absorbent layer 41. Therefore, the laminated portion 40 can be softly touched to the wearer's skin, and can be favorably adhered to by the good deformability. Excretion department, etc. Further, the discharged liquid can be smoothly introduced into the upper absorbent layer 4 1, and further, even if the upper absorbent layer 41 absorbs the liquid 'the upper absorbent layer 4 1 is difficult to exaggerate', the upper absorbent layer 41 can be stably maintained during wearing. Even the thickness and shape of the laminated portion 4〇. Therefore, the laminated portion 4 in the wearing portion can maintain good adhesion to the excretion portion and the like. On the other hand, under a load of 20 g/cm 2 (hereinafter also referred to as a mounted state), the apparent density of the lower absorbent layer 42 is the same as the apparent density of the upper absorbent layer 4 or higher than the apparent density of the upper absorbent layer 41, thus In the mounted state, the liquid can be smoothly introduced from the upper absorbent layer 41 into the lower absorbent layer 42 by the density gradient '. Therefore, even if the absorbent body 4 absorbs a certain degree of liquid, it is difficult to cause a liquid backflow (reverse osmosis) or the like from the absorbent body 4 to the skin contact surface, so that a refreshing and comfortable wearing feeling can be obtained. The upper absorbent layer 4 1 can be made at a low pressure and in a mounted state, while preventing the softness and fit of the sanitary napkin 1 from being absorbed while the upper absorbent layer 41 is prevented from being sucked by the liquid. The apparent density of the lower absorbing layer 42 is reversed (including the case where the same is present), based on achieving a good introduction of liquid to the lower absorbing layer 103456.doc • 10. 1352588 4 2 <砚 point' at low pressure, stack The upper portion of the layer portion 40 is absorbing the layer 41. The degree PA is preferably 0 05~〇25 g/cm3, more preferably 0.08~0·20 g/crn, and m_l-» is preferably 0.10. ~0.15 g/cm3, the apparent density DB of the lower absorbent layer 42 is preferably 〇〇5~〇2〇g/cm3, more preferably 〇〇5~〇15 g/cm, preferably 〇〇8~〇12 g/cm3, the better of the two is i.05 5·0' better for i.1~3, 〇, preferably 1.2~2.0. In the text-loading state, based on achieving excellent liquid introduction and liquid backflow prevention! The viewpoint that the relationship of the aforementioned pA > is established at a low pressure, in the women's wear state, the apparent density pa of the upper absorbent layer 41 of the laminated portion 40 is preferably 0.05 to 0.25 g/cm 3 'better. 〇〇8~〇2〇g/cm3, preferably 〇·1〇~0·15 g/cm3 'the apparent density pB of the lower absorbing layer 42, preferably 〇·07~〇·3 g/cm3, More preferably 〇.1〇~0.25 g/cm3, preferably 0.12~〇.2〇g/cm3 'The ratio of the two (PAVPB,) is preferably 0.20~1.0, especially preferably 〇·3~〇. 9〇. Further, 'the low pressure in the upper absorbent layer 4 1 is based on the viewpoint that the change in the liquid introduction property at the low pressure and the mounted state is small (that is, the liquid introduction stability is stabilized), the shape change is suppressed, and the local adhesion is stabilized. The ratio of the apparent density in the lower state to the mounted state (pA/pA,) is preferably from 1.0 to 2.0, more preferably from 1.05 to 1.5, most preferably from ι·〇5 to 1.3. The ratio of the apparent density (ρΒ/ρΒ,) at the low pressure of the lower absorbent layer 42 to the apparent density in the mounted state is preferably from the viewpoint that the liquid absorbing property of the lower absorbent layer 42 is good by the upper absorbent layer 41 based on the good cushioning property. 1.1 to 3.0, especially 1.2-2.5. The method of measuring the apparent density of the upper absorbent layer 41 and the lower absorbent layer 42 is carried out in the following manner. <Measurement method of apparent density under load> I03456.doc 1352588 When the lower absorbent layer 42 is pressed by the upper absorbent layer 41, the thickness thereof is easily reduced to increase the density of the wood. The density of the press recess 41a is 0.2 to 0.7 g/cm2, and more preferably '4 to 0.6 g/cm2, which is desirable from the viewpoint of improving the liquid introduction property. The pulp of the absorbent layer 4 1 on the upper portion of the laminated portion 40 is preferably weighed to 〇〇 5 5 g/cm 2 'more preferably 2 〇〇 to 400 g/cm 2 , and the upper portion of the absorbing layer 41 at low pressure. The best is preferably 1 to 5 mm, more preferably 2 to 4 mm. The weighing portion 42 of the lower portion of the laminated portion 4 is preferably weighed 5 〇 4 4 g/cm 2 , more preferably 2 〇〇 3 〇〇 g/cm 2 , and the lower portion of the absorbing layer 42 is under low pressure. The thickness is preferably from 0.5 to 4 mm, more preferably from 1 to 3 mm. In the present sanitary napkin 1, as described above, the press recess 41' is formed on the surface of the lower portion of the upper portion 4 of the upper portion of the absorbent layer 41, so that the lower portion of the lower absorbent layer 41 is on the side of the absorbent layer 42. The plane contact area (also referred to as the contact area of the upper absorption layer 41) is smaller than the plane contact area of the surface of the lower absorption layer 42 on the side of the absorption layer 41 (also referred to as the contact area of the lower absorption layer u). The area of the plane contact is the portion of the upper absorbing layer and the lower absorbing layer that pushes the other side (assumed to be a plane) by the junction between the two. When the contact area of the upper absorbent layer 41 is made smaller than the contact area of the lower absorbent layer 42, the upper absorbent layer 41 can locally strongly compress the lower absorbent layer 42 by a small area in the mounted state. This is because the load applied to the upper absorbent layer is considered to be substantially equal to the load transmitted to the lower absorbent layer/because the contact area of the upper absorbent body becomes smaller at the interface, in the actual contact portion, greater than the contact area is applied. Reducing the load of the part (even considering that 103456.doc 13 1352588 is extended outward from the direction of the laminated portion 40. When the upper absorbent layer 4ι and the lower absorbent layer 42m are less extended in the width direction, the width of the sanitary napkin can be In the direction t central portion, the ridge portion which protrudes toward the skin contact surface side of the laminated portion 4 形成 is formed, and the adhesion to the wearer's excretion portion or the like can be improved. In the present sanitary napkin 1, as described above, corresponding to The bulge portion is formed in the portion of the excretory portion of the wearer, but instead, a bulge portion may be formed at a portion corresponding to the buttocks, etc. In the sanitary napkin 1 'Fig. 2(a), Fig. 2 (b) and Fig. 3, in the portion 44 of the lower absorbent layer 42 which is outwardly extended by the laminated portion 40, the press recess 44a similar to the press recess of the upper absorbent layer 41 is formed by the same embossing. Laminated section The extending portion 44 of the portion 40 is also formed by embossing to form the press recess 44a, whereby the diffusibility of the liquid in the direction parallel to the surface of the lower absorbent layer 42 can be increased, and the introduction force of the liquid from the surface can be further improved. 'The refreshing feeling of the skin contact surface can be further improved. Further, the plane contact area of the portion 44 extending outward from the laminated portion 40 can be used in addition to the embossing process as the contact area reducing mechanism of the upper absorbent layer 41. The same effect can be obtained by reducing the mechanism. In the installed state, the upper absorbent layer is loaded into the lower absorbent layer, so that the upper absorbent layer and the lower absorbent layer are difficult to shift, especially in the form of a figure. It is shown that the case where the upper absorption layer is small is quite effective. Further, as shown in the form of Fig. 1, the contact surface with the lower absorption layer has irregularities, so that it is more difficult to shift. The present invention is not limited to the above. The implementation type can be modified within the scope of 103456.doc -16-8 1352588 of the present invention. For example, 'can also replace The raw cotton 1 has the lower absorbent layer 42 extending outward from the laminated portion 40, and as shown in Fig. 4(b), the upper absorbent layer 41 is extended. In this case, it may be formed at a portion corresponding to the excretion portion or the like. Further, the absorbent body of the present invention may be composed of only the laminated portion 40 as shown in Fig. 4 (d) or Fig. 4 (e). Alternatively, it may be replaced by a sanitary napkin. A press recess is formed on the surface of the lower absorbent layer 41 on the side of the absorbent layer 42
41a，而如圖4(e)所示，在上部吸收層41之肌膚接觸面侧之 面形成同樣之㈣凹部41be又，也可取代衛生棉}之吸收 體4之下吸收層42’而如圖斗⑷所示使用使疊層部分々ο 之厚度與由疊層部分4G延伸之部份之厚度均勾之下部吸收 層& X ’有關如圖4⑷〜圖4⑷所示之各吸收體，對於與 上述衛生棉1之吸收體同樣之構成部分，附以與使用於衛 生棉1之符號同一之符號。 入，歷釋凹部41a、4ib、44a之 外：也可形成橢圓形、卵形、三角形、長方形、正方形 星形。形等任意形狀。又，各虔搾凹部a死报# 一 ::子"，連續形狀之愿搾凹部，以取代不連續： 之又’也可與此等壓榨凹部同時’沿著衛生相 性。形成壓榨溝ΓΓ 成壓榨溝’以提高防$41a, and as shown in Fig. 4(e), the same (four) concave portion 41be is formed on the skin contacting surface side of the upper absorbent layer 41, and the absorbent layer 42' may be replaced by the absorbent body 4 of the sanitary napkin. The drawing bucket (4) is used to make the thickness of the laminated portion 々ο and the thickness of the portion extending from the laminated portion 4G, and the lower absorbent layer & X ', as shown in Figs. 4(4) to 4(4), The same components as those of the absorbent body of the sanitary napkin 1 described above are given the same reference numerals as those used for the sanitary napkin 1. In addition, the outer concave portions 41a, 4ib, and 44a are formed: an elliptical shape, an oval shape, a triangular shape, a rectangular shape, and a square star shape may be formed. Shape and other shapes. Further, each of the squeezing recesses a deadly #一::子", the continuous shape of the wishing presses the recesses to replace the discontinuities: the 'and the press recesses at the same time' along the hygienic phase. Forming a press gully into a press groove ’
• 面維持壓榨凹部之液體之導A Γ生 面賦予向防漏性。 又，也可將表面薄片 由兩側部延伸之襟翼， 延伸，覆蓋背面薄片。且也可形成 形成捲附固定於内褲之褲襠部，或 103456.doc 1352588 擴大至内褲之臀部側使用之型態。也可在下部吸收層施以 壓紋加工。 本發明之吸收性物品除了生理用衛生棉以外，也可使用 作為衛生護塾、失禁護墊、拋棄式紙尿褲等。本發明尤宜 適合於固定地安裝於短褲等安裝具上使用。 【圖式簡單說明】 圖1係作為本發明之—實施型態之生理用衛生棉之平面 圖。• The surface of the liquid that maintains the press recess is a leak-proof. Further, the flaps extending from the both side portions may be extended to cover the back sheet. It may also be formed into a crotch portion that is attached to the undergarment, or 103456.doc 1352588 expanded to the hip side of the undergarment. Embossing can also be applied to the lower absorbent layer. The absorbent article of the present invention can be used as a sanitary squeegee, an incontinence pad, a disposable diaper or the like in addition to a sanitary tampon. The present invention is particularly suitable for use in a fixed installation on a fixture such as a pair of shorts. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a sanitary napkin as an embodiment of the present invention.
圖2(a)及圖2(b)係分別模式地表示圖αχ_χ線剖面之模 式剖面圖’圖2(a)係表示實質上無負載下之狀態之圖，圖 2(b)係表示安裝狀態之圖。 血圖3係將圖丨之生理用衛生棉之吸收體分離成上部吸收層 下。P吸收層而分別由非肌膚接觸面侧所見之狀態之平面 圖4(a)〜圖4(e)係表示本發明之另一實施型態之吸收體之 寬度方向之剖面之模式剖面圖。 【主要元件符號說明】 衛生棉 2 肌膚接觸面 3 非肌膚接觸面 4 吸收體 11 密封部 21 表面薄片 31 背面薄片 103456.doc -18- 1352588 40 疊 層 41 上 部 41a, 41b,44a 壓 榨 42 下 部 44 疊 層 部分 吸收層 凹部 吸收層 部分40向外延伸之部分2(a) and 2(b) are schematic cross-sectional views showing a cross-sectional view of the αχ_χ line, respectively. FIG. 2(a) shows a state in which there is substantially no load, and FIG. 2(b) shows an installation. State diagram. Blood Figure 3 separates the absorbent body of the sanitary napkin of Figure 成 into the upper absorbent layer. Fig. 4(a) to Fig. 4(e) are schematic cross-sectional views showing a cross section in the width direction of the absorbent body according to another embodiment of the present invention, in which the P absorbing layer is formed by the non-skin contact surface side. [Description of main components] Sanitary napkin 2 Skin contact surface 3 Non-skin contact surface 4 Absorber 11 Sealing part 21 Surface sheet 31 Back sheet 103456.doc -18- 1352588 40 Stack 41 Upper part 41a, 41b, 44a Press 42 Lower part 44 Laminated portion of the absorbent layer recessed portion of the absorbent layer portion 40 extending outwardly
103456.doc •19· ⑧103456.doc •19· 8