201249410 六、發明說明： 【發明所屬之技術領域】 該發明是關於一種用後即棄式紙尿布，更詳而言之， 是關於體液吸收部包含粉碎紙漿與高吸水性聚合物粒子之 用後即棄式紙尿布。 【先前技術】 用後即棄式紙尿布中的體液吸收部包含粉碎紙漿與高 吸水性聚合物粒子的例子是習知也是眾所周知。 例如，日本特開2 0 0 2 - 3 1 5 7 8 3號公報（專利文獻1 ) 記載的用後即棄式的紙尿褲的吸收體，是包含高吸水性聚 合物粒子與粉碎紙漿者，在高吸水性聚合物粒子使用吸液 倍率40g/g以上，依據Vortex法之吸液速度爲20秒以下 者。 又，日本特表平6-503 983號公報（專利文獻2)指示 ’提出關於用後即棄式紙尿布等的吸收體的構造，理想上 必須在排出滲出物馬上吸收這個的吸收體物品，在吸收體 膠化劑使用依據茶包試驗進行試驗時，可在1 〇秒或這以 下以其吸收容量的至少來到約40%的速度吸收合成尿者。 ' 日本特開2009-6 1 063號公報（專利文獻3)記載的吸 收性物品的一例爲用後即棄式紙尿布，該吸收性物品中的 吸收體包含通液速度及吸收量高，且吸水速度也高的吸水 聚合物。 〔先前技術文獻〕 -5- 201249410 〔專利文獻〕 〔專利文獻1〕日本特開2002-315783號公報 〔專利文獻2〕日本特表平6-503983號公報 〔專利文獻3〕日本特開2009-61063號公報 【發明內容】 〔發明所欲解決之課題〕 前述習知技術中，在吸收體液用的高吸水性聚合物粒 子、吸收體膠化劑喜好使用吸水速度高，且吸水量也高者 。然而’依據本發明者的見解，包含以這類的髙吸水性聚 合物粒子作爲芯材的一部分時的體液吸收部，吸水後高吸 水性聚合物粒子急速膨脹，而且往往會有顯著的體積變大 。形成這樣的狀態的體液吸收部，變得會對用後即棄式的 紙尿褲的穿用者的肌0緊緊貼合，或使體液吸收部與肌虜 之間的間隙變窄，藉此對肌膚給予強烈的膨脹感，或增強 悶熱感。又，當體液吸收部中即使胯下域的一部分的體積 顯著變大時，其一部分被兩腿夾住時，胯下域異常膨脹會 有外觀難看的問題》看見體積顯著變大的其一部分的母親 ，即使體液吸收部還有吸收體液的餘力，也可能會判斷成 必須將紙尿褲換新》 在該發明，是以提供一種，對於消除體液吸收部中的 這類的問題有幫助的用後即棄式紙尿布作爲課題。 〔解決課題用的手段〕201249410 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a disposable disposable diaper, and more particularly to the use of a pulverized pulp and superabsorbent polymer particles after the body fluid absorbing portion is contained. Disposable disposable diapers. [Prior Art] It is also known that the body fluid absorbing portion in the disposable diaper contains pulverized pulp and superabsorbent polymer particles. For example, the absorbent body of the disposable diaper described in Japanese Patent Publication No. 2 0 0 2 - 3 1 5 7 8 3 (Patent Document 1) is a high-absorbent polymer particle and a pulverized pulp. The superabsorbent polymer particles have a liquid absorption ratio of 40 g/g or more, and the liquid absorption rate according to the Vortex method is 20 seconds or less. In addition, Japanese Patent Publication No. 6-503 983 (Patent Document 2) is directed to the structure of an absorbent body such as a disposable disposable diaper, and it is desirable to absorb the absorbent article immediately after discharging the exudate. When the absorbent gelling agent is tested according to the tea bag test, the synthetic urine can be absorbed at a rate of at least about 40% of its absorbent capacity in 1 second or less. An example of the absorbent article described in Japanese Laid-Open Patent Publication No. 2009-6 1 063 (Patent Document 3) is a disposable disposable diaper, wherein the absorbent article of the absorbent article contains a liquid passing rate and a high absorption amount, and A water-absorbing polymer having a high water absorption rate. [Prior Art Document] -5-201249410 [Patent Document] [Patent Document 1] JP-A-2002-315783 (Patent Document 2) Japanese Patent Publication No. Hei 6-503983 (Patent Document 3) JP-A-2009- [Problem to be Solved by the Invention] In the above-mentioned conventional technique, the superabsorbent polymer particles for absorbing body fluids and the gelling agent for the absorbent body are preferred to have a high water absorption rate and a high water absorption amount. . However, according to the findings of the present inventors, the body fluid absorbing portion including the cerium-absorbing polymer particles as a core material, the superabsorbent polymer particles rapidly expand after water absorption, and tends to have a significant volume change. Big. When the body fluid absorbing portion is formed in such a state, the muscle 0 of the wearer of the disposable diaper is tightly fitted, or the gap between the body fluid absorbing portion and the tendon is narrowed. The skin gives a strong sense of swelling or a feeling of sultry heat. In addition, when the volume of a part of the crotch region is significantly increased in the body fluid absorption portion, when a part of the crotch region is sandwiched between the legs, the abnormal expansion of the crotch region may cause an unattractive appearance, and a portion in which the volume is significantly increased is observed. Mother, even if the body fluid absorption part has the residual force of absorbing body fluid, it may be judged that the diaper must be replaced. In the invention, it is provided that it is useful for eliminating such problems in the body fluid absorption part. A disposable diaper is a problem. [Means for solving the problem]
-6- 201249410 做爲解決前述課題用的該發明的對象，是一種具備： 前後方向與寬幅方向，在胯下域與位在前述胯下域的前方 的前腰圍域和位在前述胯下域的後方的後腰圍域之中的至 少前述胯下域形成有體液吸收部，在前述體液吸收部，以 透液性表面薄片被覆由透液性包裹薄片被覆包含粉碎紙漿 與高吸水性聚合物粒子之體液吸收性材料的混合體的方式 所形成的芯材的一部分之用後即棄式紙尿布。 作爲這類的發明的特徵之處，如以下所述。亦即，在 前述芯材形成有朝向前述芯材的厚度方向形成凹狀的複數 個壓榨部，在前述壓榨部，前述混合體與前述包裹薄片經 由熱熔接著劑相互接合。在前述壓榨部壓榨前述芯材，而 形成被形成在比鄰的前述壓榨部彼此之間的非壓榨部中的 前述芯材的厚度成爲80%以下。前述壓榨部之一、與相對 於其一個壓榨部位在最近的位置的壓榨部之間的中心間距 離在2〜14mm的範圍。前述高吸水性聚合物粒子，是開 始無加壓吸水試驗起的5分後的吸水量比45ml/g更小， 且荷重下吸水量比14g/g更小者》 該發明的實施態樣之一，其中，前述壓榨部被形成在 與前述表面薄片相對的部位。 該發明的實施態樣之一，其中，前述芯材是由不透液 性裏面薄片被覆其一部分，前述壓榨部被形成在與前述裏 面薄片相對的部位。 該發明的實施態樣之一，其中’前述壓榨部是相對於 前述芯材與前述表面薄片被形成。 201249410 該發明的實施態樣之一，其中，前述壓榨部是在不包 含前述表面薄片與前述裏面薄片的狀態下被形成。 該發明的實施態樣之一，其中，前述體液吸收部是從 前述胯下域朝向前述前腰園域及前述後腰圍域之中的至少 一方延伸，前述壓榨部僅被形成在前述胯下域。 該發明的實施態樣之一，其中’前述體液吸收部是從 前述胯下域朝向前述前腰圍域及前述後腰圍域之中的至少 一方延伸，前述壓榨部在朝向前述至少一方延伸的部分也 有形成。 該發明的贲施態樣之一，其中，形成於前述芯材中的 表面的每1 cm2的前述壓榨部的數量，在前述前後方向， 從前述胯下域的中央部分朝向至少一方變少。 該發明的實施態樣之一，其中，前述芯材中的前述粉 碎紙漿與前述高吸水性聚合物粒子各自的量在100〜 3 50g/m2的範圍，前述粉碎紙漿與前述高吸水性聚合物粒 子的合計量在3 00〜600g/m2的範圍。 該發明的實施態樣之一，其中，前述壓榨部中的前述 高吸水性聚合物粒子與前述非壓榨部中的前述高吸水性聚 合物粒子相比處於互相接近的狀態。 〔發明的效果〕 在該發明的用後即棄式紙尿布，由於在包含粉碎紙賭 與高吸水性聚合物粒子的芯材形成有複數個壓榨部，所以 藉由粉碎紙漿與高吸水性聚合物粒子吸收體液而使芯材的 -8 - 201249410 體積增加，而可減弱所謂伴隨這個的體液吸收部的 厚的傾向。具有這樣的體液吸收部的紙尿褲，可消 輕在習知的體液吸收部所產生的各式各樣的問題， 所謂體液吸收部的一部分異常膨脹的問題：所謂與 穿用者的肌膚緊貼，而給予穿用者強烈的濕潤感的 【實施方式】 〔實施發明用的形態〕 參閱添付的圖面，說明該發明的用後即棄式紙 詳細如以下所述。 圖1表示作爲用後即棄式紙尿布的一例的紙尿 部分破斷俯視圖。紙尿布1具有：透液性的表面薄 不透液性的裏面薄片3;以及介設在該等兩薄片2、 的體液吸收性的芯材4。芯材4;被覆芯材4的表 分的表面薄片2;以及被覆芯材4的裏面的部分的 片3是形成體液吸收部5。其體液吸收部5是從胯 延伸到前腰圍域8與後腰圍域9。在紙尿布1又相 面薄片3從紙尿布1的外側層積有外側薄片6 (參 )0 紙尿布1具有：前後方向A;及寬幅方向B， 方向A的中央部形成有胯下域7,在胯下域7的前 有前腰圍域8，在胯下域7的後方形成有後腰圍域 前後方向A的兩端部，朝寬幅方向B延伸的複數條 厚度變 除或減 例如： 紙尿褲 問題等 尿布的 布1的 片2、 3之間 面的部 裏面薄 下域7 對於裏 照圖2 在前後 方形成 9。在 的前腰 201249410 圍彈性構件11;以及朝寬幅方向B延伸的複數條的後腰 圍彈性構件12位在表面薄片2與裏面薄片3之間，並以 延伸狀態接合在該等兩薄片2、3的至少一方。 在紙尿布1的寬幅方向B的兩側形成有朝前後方向A 延伸的防漏堤1 3。在防漏堤1 3的內側緣部1 3 a形成有套 管14，在套管14的內側，彈性構件1 6以朝前後方向A 伸長狀態延伸。在紙尿布1的兩側緣部1 7，朝前後方向A 以伸長狀態延伸的複數條的腿圍彈性構件1 8位在裏面薄 片3與防漏堤1 3的外側緣部1 9之間，並經由熱熔接著劑 (未圖示）接合在裏面薄片3及防漏堤13之中的至少一 方。在後腰圍域9中的紙尿布1的兩側部安裝有帶狀扣具 21。扣具21具有卡止用部位22，穿用紙尿布1時，對於 被設在前腰圍域8的外面的目標區域（未圖示）可卸下其 卡止用部位22地卡止。 這樣所形成的紙尿布1，是相對於將寬幅方向B的尺 寸分成兩等分的中心線CL形成對稱。對其紙尿布1中的 表面薄片2畫成的許多的點23，是表示後述的壓榨部51 分佈的範圍。 圖2表示圖1的ΙΙ-Π線切斷面的圖，可是爲了容易 理解在胯下域7，各構件疊合的狀態，而以模式表示各構 件的形狀與相互的位置關係。這樣的圖2中，芯材4介設 在表面薄片2與裏面薄片3之間。其芯材4,至少是由： 包含粉碎紙漿4 1與高吸水性聚合物粒子42 (皆參照圖4 )的體液吸收性材料的混合體43、與被覆混合體43的薄 -10- ⑧ 201249410 紙44所形成。薄紙44是包含薄紙44a與薄紙44b。混合 體43與薄紙44是經由第1熱熔接著劑HA1接合。芯材4 是經由第2熱熔接著劑HA2接合在表面薄片2，並經由第 3熱熔接著劑HA3接合在裏面薄片3。芯材4、與重疊於 此的表面薄片2和裏面薄片3是形成體液吸收部5 (參照 圖4)。表面薄片2與裏面薄片3,在從芯材4的周緣延 出的部分疊合，並經由第2、第3熱熔接著劑Η A2、Η A3 相互接合。在表面薄片2，防漏堤1 3的外側緣部1 9經由 第4熱熔接著劑ΗΑ4接合》防漏堤13的內側緣部1 3a， 前後方向A中的兩端部分雖經由熱熔接著劑（未圖示）接 合在前腰圍域8與後腰圍域9的各腰圍域，可是在胯下域 7並沒有接合於表面薄片2，當穿用紙尿布1且彈性構件 1 6收縮時’其內側緣部1 3如以假想線所示變化成由表面 薄片2起立的姿勢。 在裏面薄片3藉由使用第5熱熔接著劑ΗA5，而從紙 尿布〗的外側層積有外側薄片6。 此外，在圖1經由胯下域7從前腰圍域8延伸到後腰 圍域9爲止的體液吸收部5，是可適當縮短前後方向a中 的尺寸。例如，體液吸收部5也可是僅存在於胯下域7者 ，也可僅存在於胯下域7與前腰圍域8，也可僅存在於胯 下域7與後腰圍域9 » 在圖1、2所示的紙尿布1’在表面薄片2使用由熱可 塑性合成纖維所形成的不織布，例如使用氣流不織布、，钫 黏不織布；作爲紡黏不織布與熔噴不織布和紡黏不織布的 -11 - 201249410 層積體之SMS不織布等。氣流不織布的一例中，在熱可 塑性合成纖維，具有纖度1〜4dtex的聚乙烯與聚丙烯的 複合纖維以10〜35g/m2的比例被使用。在裏面薄片3使 用由熱可塑性合成樹脂所形成的薄膜，例如使用厚度爲5 〜20 // m的聚乙烯薄膜。外側薄片6是避免紙尿布1的外 面因裏面薄片3的存在而成爲塑料狀，而以形成布狀爲目 的被使用者，並藉由具有1〜4dtex的纖度的熱可塑性合 成纖維以10〜20g/m2的比例被使用的不織布所形成。 形成芯材4的混合體43的粉碎紙漿41與高吸水性聚 合物粒子42 (皆參照圖4)分別是使用每單位面積的質量 在100〜3 50g/m2的範園，粉碎紙漿41與高吸水性聚合物 粒子42的合計量成爲3 00〜600g/m2的範圍。被覆混合體 43的薄紙44，是使用在該領域慣用者，且是使用具有1 5 〜20g/m2的質量作爲一例。 防漏堤1 3是不織布，更理想爲施予撥水處理，在使 用紙尿布1上，由實質上不透液性的不織布所形成。 圖3、4是表示圖1中的部分in的放大圖、與其放大 圖中的IV-IV線切斷面的圖。在體液吸收部5形成有從表 面薄片2朝向芯材4的厚度方向凹陷的許多個壓榨部51， 在壓榨部5 1與5 1之間形成有非壓榨部5 2。 在圖3所示的壓榨部51的平面形狀並沒有特別的規 定，圖中，壓榨部51的底面部爲圓形，且是表示其直徑 D在1.5〜5mm的範圍的例子。平面形狀不是圓形的情況 的壓榨部51’是具有內接於直徑e(參照圖5)在1.5〜-6-201249410 The object of the invention for solving the above-mentioned problems is to provide a front-rear direction and a wide-width direction, and a front waist region in front of the underarm region and in front of the underarm region and a position under the aforementioned armpit At least the aforementioned crotch region of the rear waist region of the rear region is formed with a body fluid absorbing portion, and the liquid permeable portion is covered with a liquid permeable surface sheet covered with a liquid permeable wrapping sheet containing the pulverized pulp and the superabsorbent polymer. A disposable diaper is used after a part of the core material formed by the mixture of the body fluid absorbent materials of the particles. As a feature of such an invention, it is as follows. That is, the core material is formed with a plurality of press portions which are formed in a concave shape in the thickness direction of the core material, and in the press portion, the mixture and the wrap sheet are joined to each other via a hot-melt adhesive. The core material is pressed in the press portion, and the thickness of the core material formed in the non-pressing portion formed between the adjacent press portions is 80% or less. The center-to-center distance between one of the press portions and the press portion at the closest position to one of the press portions is in the range of 2 to 14 mm. The superabsorbent polymer particles are smaller than 45 ml/g after starting the non-pressurized water absorption test, and the water absorption amount under load is smaller than 14 g/g. First, the press portion is formed at a portion opposed to the surface sheet. According to one aspect of the invention, the core material is covered with a liquid-impermeable inner sheet, and the press portion is formed at a portion facing the inner sheet. One of the embodiments of the invention, wherein the aforementioned press section is formed with respect to the core material and the aforementioned surface sheet. 201249410. One of the embodiments of the present invention, wherein the press portion is formed without including the surface sheet and the inner sheet. According to one aspect of the invention, the body fluid absorbing portion extends from at least the crotch region toward at least one of the front waist region and the rear waist region, and the press portion is formed only in the armpit region . According to one aspect of the invention, the body fluid absorbing portion extends from at least the crotch region toward at least one of the front waist region and the rear waist region, and the press portion extends in at least one of the portions extending toward the at least one side. form. In one of the aspects of the present invention, the number of the press portions per 1 cm 2 of the surface formed in the core material is reduced from at least one of the central portions of the crotch region in the front-rear direction. According to one aspect of the invention, the amount of each of the pulverized pulp and the superabsorbent polymer particles in the core material is in the range of 100 to 3 50 g/m 2 , the pulverized pulp and the superabsorbent polymer. The total amount of particles is in the range of 300 to 600 g/m2. According to one aspect of the invention, the superabsorbent polymer particles in the press portion are in a state of being close to each other than the superabsorbent polymer particles in the non-pressing portion. [Effects of the Invention] In the disposable diaper of the present invention, since a plurality of press portions are formed in a core material including pulverized paper gambling and superabsorbent polymer particles, pulverized pulp and superabsorbent polymerization are carried out. When the particles absorb the body fluid, the volume of the core material -8 - 201249410 is increased, and the thickness of the body fluid absorbing portion accompanying this is weakened. The diaper having such a body fluid absorbing portion can eliminate various problems caused by the conventional body fluid absorbing portion, and the problem that the part of the body fluid absorbing portion is abnormally swelled is so close to the wearer's skin. [Embodiment] for giving a strong moist feeling to the wearer [Formation for carrying out the invention] Referring to the drawings to be added, the disposable paper of the invention will be described in detail below. Fig. 1 is a plan view showing a broken portion of a paper urine as an example of a disposable disposable diaper. The disposable diaper 1 has a liquid-permeable inner surface sheet 3 which is liquid-permeable and has a liquid-liquid absorbing core material 4 interposed between the two sheets 2. The core material 4; the surface sheet 2 covering the surface of the core material 4; and the sheet 3 covering the inner surface of the core material 4 are formed into the body fluid absorbing portion 5. The body fluid absorbing portion 5 extends from the 胯 to the front waist region 8 and the back waist region 9. In the disposable diaper 1 of the disposable diaper 1, the outer sheet 6 is stacked from the outer side of the disposable diaper 1. The diaper 1 has a front-back direction A and a width direction B, and a central portion of the direction A is formed with an underarm region. 7. The front waist region 8 is formed in front of the armpit region 7, and both ends of the front waist direction A in the front-rear direction A are formed behind the armpit region 7, and the plurality of thicknesses extending in the width direction B are divided or reduced, for example. : The diaper problem, etc., between the sheets 2 and 3 of the cloth 1 of the diaper, the thin inner field 7 is formed on the front and rear sides of the diaper. a front waist 201249410 surrounding elastic member 11; and a plurality of rear waist elastic members 12 extending in the width direction B between the surface sheet 2 and the inner sheet 3, and joined to the two sheets 2 in an extended state At least one of 3. A leakage preventing bank 13 extending in the front-rear direction A is formed on both sides of the wide direction B of the disposable diaper 1. A sleeve 14 is formed at the inner edge portion 1 3 a of the leakage preventing bank 13 , and the elastic member 16 extends in the longitudinal direction toward the front-rear direction A inside the sleeve 14 . A plurality of leg-reinforcing members 18 extending in an extended state in the front-rear direction A at both side edges of the disposable diaper 1 are located between the inner sheet 3 and the outer edge portion 19 of the leakage preventing bank 1 3 . At least one of the inner sheet 3 and the leakage preventing bank 13 is joined via a hot melt adhesive (not shown). A belt-shaped fastener 21 is attached to both side portions of the disposable diaper 1 in the back waist region 9. The clip 21 has a locking portion 22, and when the disposable diaper 1 is worn, the locking portion 22 can be detached from the target region (not shown) provided on the outer surface of the front waist region 8. The disposable diaper 1 thus formed is symmetrical with respect to the center line CL which divides the size of the wide direction B into two equal parts. A plurality of dots 23 drawn on the surface sheet 2 in the disposable diaper 1 are ranges indicating the distribution of the press portion 51 to be described later. Fig. 2 is a view showing the ΙΙ-Π line cut surface of Fig. 1. However, in order to easily understand the state in which the members are overlapped in the underarm region 7, the shape and mutual positional relationship of the members are shown in a pattern. In Fig. 2, the core material 4 is interposed between the surface sheet 2 and the inner sheet 3. The core material 4 is at least: a mixture 43 containing a body fluid absorbent material of the pulverized pulp 41 and the superabsorbent polymer particles 42 (refer to FIG. 4), and a thin film of the coating mixture 43-10-8 201249410 Paper 44 is formed. The thin paper 44 is composed of a thin paper 44a and a thin paper 44b. The mixture 43 and the thin paper 44 are joined via the first hot-melt adhesive HA1. The core material 4 is bonded to the surface sheet 2 via the second hot-melt adhesive HA2, and joined to the inner sheet 3 via the third hot-melt adhesive HA3. The core material 4 and the surface sheet 2 and the back sheet 3 which are superposed thereon are formed into a body fluid absorbing portion 5 (see Fig. 4). The surface sheet 2 and the inner sheet 3 are overlapped at a portion extending from the periphery of the core member 4, and joined to each other via the second and third heat-fusible adhesives Η A2 and Η A3. In the surface sheet 2, the outer edge portion 19 of the leakage preventing bank 13 is joined to the inner edge portion 13a of the leakage preventing bank 13 via the fourth hot-melt adhesive crucible 4, and both end portions in the front-rear direction A are thermally welded. The agent (not shown) is joined to each of the waist regions of the front waist region 8 and the back waist region 9, but is not joined to the surface sheet 2 in the underarm region 7, when the disposable diaper 1 is worn and the elastic member 16 is contracted The inner edge portion 13 is changed to a posture in which the surface sheet 2 stands up as indicated by an imaginary line. In the inner sheet 3, the outer sheet 6 is laminated from the outer side of the paper diaper by using the fifth hot-melt adhesive ΗA5. Further, in the body fluid absorbing portion 5 extending from the front waist region 8 to the rear waist region 9 via the crotch region 7 in Fig. 1, the size in the front-rear direction a can be appropriately shortened. For example, the body fluid absorbing portion 5 may be present only in the underarm region 7, or may exist only in the infraorbital region 7 and the front waist region 8, or may exist only in the inferior region 7 and the back waist region 9 » in Fig. 1 The paper diaper 1' shown in Fig. 2 uses a non-woven fabric formed of thermoplastic synthetic fibers in the surface sheet 2, for example, an air-laid non-woven fabric, a non-woven fabric, and a spunbond non-woven fabric, a melt-blown nonwoven fabric, and a spunbonded nonwoven fabric. 201249410 The laminate of the SMS is not woven, etc. In an example of the air-laid nonwoven fabric, a composite fiber of polyethylene and polypropylene having a fineness of 1 to 4 dtex is used in a ratio of 10 to 35 g/m 2 in the thermoplastic synthetic fiber. In the inner sheet 3, a film formed of a thermoplastic synthetic resin is used, for example, a polyethylene film having a thickness of 5 to 20 // m is used. The outer sheet 6 is made of a plastic material to prevent the outer surface of the disposable diaper 1 from being formed by the presence of the inner sheet 3, and is used by a user for forming a cloth shape, and is made of a thermoplastic synthetic fiber having a fineness of 1 to 4 dtex at 10 to 20 g. The ratio of /m2 is formed by the non-woven fabric used. The pulverized pulp 41 and the superabsorbent polymer particles 42 (both with reference to Fig. 4) forming the mixture 43 of the core material 4 are respectively granulated with a mass of 100 to 3 50 g/m2 per unit area, and the pulverized pulp 41 is high. The total amount of the water-absorptive polymer particles 42 is in the range of 300 to 600 g/m 2 . The tissue paper 44 covering the mixed body 43 is used in the field and is preferably used as a mass having a mass of 15 to 20 g/m2. The leakage preventing bank 13 is a non-woven fabric, and is more preferably subjected to a water repellent treatment, and is formed of a substantially liquid-impermeable non-woven fabric on the disposable diaper 1. Figs. 3 and 4 are enlarged views showing a portion in in Fig. 1 and a cut surface taken along line IV-IV in the enlarged view. The body fluid absorbing portion 5 is formed with a plurality of press portions 51 recessed from the surface sheet 2 toward the thickness direction of the core member 4, and a non-pressing portion 52 is formed between the press portions 51 and 51. The planar shape of the press portion 51 shown in Fig. 3 is not particularly limited. In the figure, the bottom surface portion of the press portion 51 is circular and is an example in which the diameter D is in the range of 1.5 to 5 mm. The press portion 51' in the case where the planar shape is not circular is inscribed with a diameter e (refer to Fig. 5) at 1.5~
-12- 201249410 5 mm的範圍的圓56(參照圖5)這類的平面形狀者爲理想 。其平面形狀不是圓形時，則至少爲在三處內接於其圓5 6 的形狀爲理想。體液吸收部5中的壓榨部51的分佈雖也 沒有特別的規定，可是在一個壓榨部51和與其比鄰的複 數個壓榨部51之間的壓榨部51彼此的中心間距離L之中 ，成爲最小的中心間距離L是位在2〜14mm的範圍爲理 想。換言之，壓榨部51之一、與相對於其一的壓榨部51 位在最近的位置的壓榨部51之間的中心間距離L是在2 〜14mm的範圍爲理想。在許多個壓榨部51之間，當中心 間距離L形成比2mm更小的情況多的時候，則體液吸收 部5變硬，會有不易變形的情況，而成爲不理想者。又， 在許多個壓榨部5 1之間，當中心間距離L比14mm變得 更大的情況多的時候，吸收體液之後的體液吸收部5容易 成爲厚度厚者，而不是理想者。壓榨部51雖也可相對於 表面薄片2形成如圖示例規則性的分佈，可是也可形成不 規則地分佈。 圖4中，體液吸收部5包含：被覆芯材4與芯材4的 上面側的表面薄片2;被覆芯材4的下面側的裏面薄片3 ;以及層積於裏面薄片3的外側薄片6。壓榨部51是在包 含表面薄片2的狀態被形成。芯材4至少包含：包含粉碎 紙漿4 1、與高吸水性聚合物粒子42的體液吸收性材料的 混合體43;以及作爲被覆混合體43的透液性的包裹薄片 的薄紙44。體液吸收部5又包含：該等的構件相互接合用 的第1、第2、第3、第5熱熔接著劑HA1、HA2、HA3、 -13- 201249410 ΗA5。圖4中的芯材4、體液吸收部5的剖面形狀，是藉 由銳利的刀具切割藉由液體氮而形成低溫的體液吸收部5 製作成的剖面，且可將其剖面放大3 0倍左右進行觀察並 予以確認。 在如圖3平面觀察時的體液吸收部5，關於體液吸收 部5的表面積的每lcm2，粉碎紙漿41與高吸水性聚合物 粒子42的量不論體液吸收部5的部位幾乎一定。換言之 ，關於圖4所示的平坦的裏面薄片3的面積的每1 cm2的 粉碎紙漿41與高吸水性聚合物粒子42的量幾乎一定。可 是，在圖4中的剖面，在壓榨部51藉由壓榨芯材4，在其 壓榨部51，粉碎紙漿41與高吸水性聚合物粒子42相互接 近，而集合緊貼，除此之外，粉碎紙漿41彼此、高吸水 性聚合物粒子42彼此也相互接近，而集合緊貼，且高吸 水性聚合物粒子42處於容易形成膠塊的狀態。可是，在 非壓榨部52，由於沒有壓榨芯材4，或沒有如壓榨部51 的程度進行壓榨，所以粉碎紙漿41與高吸水性聚合物粒 子42處於相互分離的分散的狀態。在壓榨部51，混合體 43與薄紙44藉由熱熔接著劑HA1接合，是不論是否有使 用紙尿布1的狀態，在維持壓榨部51的形狀上爲重要者 〇 圖3、4所示的狀態的體液吸收部5，是具有與體液吸 收部5同樣的組成，並且具有一樣的厚度，其厚度與非壓 榨部52的厚度相同，或可藉由對比非壓榨部52的厚度更 厚的體液吸收部（未圖示）施加壓花加工的方式獲得。在 -14- ⑧ 201249410 其壓花加工，使用具有與壓榨部51對應的壓花加工用的 銷的滾子，而可藉由室溫或處於加熱狀態的銷按壓體液吸 收部的方式獲得。關於如此所獲得的體液吸收部5的壓榨 部51與非壓榨部52的厚度，是除了芯材4與表面薄片2 之外，在包含裏面薄片3與外側薄片6的狀態下，使用後 述KEYENCE製高精度2次元雷射位移計LJ-G030進行測 量。在壓榨部51的厚度的測量，從100cm2的寬度中選擇 1 〇處的壓榨部5 1，朝壓榨部51的底面照射位移計的雷射 光線，測量各個的厚度，求取厚度的平均値。測量非壓榨 部52的厚度時，從100cm2的寬度之中選擇10處厚度厚 的部位，並對各處照射雷射光線測量厚度，並求取厚度的 平均値。 在排泄出尿的時候的體液吸收部5中的壓榨部5 1，抑 制因壓榨而交合的粉碎紙漿41增大的情況，藉由被壓榨 而互相接近的高吸水性聚合物粒子42彼此容易形成膠塊 ，而可抑制膨脹的程度。這樣的結果，可抑制壓榨部5 1 與其周邊，體液吸收部5變厚的情況。又，在非壓榨部52 ，由於藉由圖4中的兩側部分的動作，因厚度不會變厚的 各壓榨部51而受到限制，所以雖不如壓榨部5 1 ’可是在 非壓榨部52也可抑制體液吸收部5變厚的情況。因此’ 圖示例的體液吸收部5，與沒有形成壓榨部51的體液吸收 部相比時，在紙尿布1的胯下域7，可防止體液吸收部5 的厚度顯著變厚的情況。藉由這樣的情況，由於不會有厚 度變厚的體液吸收部5與肌膚緊貼、或與肌膚之間的間隙 -15- 201249410 顯著變窄的情況，所以可抑制所謂在胯下域7的濕潤感變 強的情況。又，厚度變厚的體液吸收部5成爲被兩腿夾持 的狀態時’可解除或減輕所謂體液吸收部5異常膨脹的問 題。 在紙尿布1，要確實發揮這類的作用效果，規定高吸 水性聚合物粒子42的吸水特性也是重要。在爲了達成這 樣的目的的高吸水性聚合物粒子42，使用無加壓吸水量在 4 5ml/g以下，荷重下吸水量在14g/g以下者爲理想。 無力□壓吸水量是使用 Scientific Machine & SupplyCo.製的 Demand Wettalility Tester 進行測量。該 Tester在生理食鹽水使用0.9%氯化鈉水溶液，在網使用 250尼龍網孔網（NBC工業製 N-NO.250HD)。高吸水性 聚合物粒子的使用量是lg。該發明中的無加壓吸水量是指 ，開始吸水試驗起的5分後的値。 在荷重下吸水量的測量，使用底面由2 5 0尼龍網孔網 所形成的內徑26mm的塑膠製圓筒。將質量S的高吸水性 聚合物粒子放入該圆筒，將載置有預定的配重的活塞嵌入 其圓筒，求取全體的質量W1。將圓筒立置在放入25g的 生理食鹽水的培養皿靜置60分鐘。求取從培養皿取出的 圓筒的質fi W2，藉由下式求取荷重下吸水量。-12- 201249410 The shape of the circle 56 (see Fig. 5) in the range of 5 mm is ideal. When the planar shape is not circular, it is desirable that at least three of the shapes are inscribed in the circle 56. The distribution of the press portion 51 in the body fluid absorbing portion 5 is not particularly limited, but is minimized among the center distances L between the press portions 51 between the one press portion 51 and the plurality of press portions 51 adjacent thereto. The distance between the centers of the center is ideal for the range of 2 to 14 mm. In other words, it is preferable that the center-to-center distance L between one of the press portions 51 and the press portion 51 at the closest position to the press portion 51 of one of the press portions 51 is in the range of 2 to 14 mm. When the center-to-center distance L is formed to be smaller than 2 mm between the plurality of press portions 51, the body fluid absorbing portion 5 becomes hard and is less likely to be deformed, which is undesirable. Further, when there are many cases where the center-to-center distance L is larger than 14 mm between the plurality of press portions 51, the body fluid absorbing portion 5 after the body fluid is absorbed tends to be thick, which is not preferable. The press portion 51 may be formed in a regular pattern as shown in the example with respect to the surface sheet 2, but may be irregularly distributed. In Fig. 4, the body fluid absorbing portion 5 includes a surface sheet 2 covering the upper surface side of the core material 4 and the core material 4, a back sheet 3 covering the lower surface side of the core material 4, and an outer sheet 6 laminated on the back sheet 3. The press portion 51 is formed in a state including the surface sheet 2. The core material 4 includes at least a mixture 43 containing a pulverized pulp 41 and a body fluid absorbent material with the superabsorbent polymer particles 42, and a thin paper 44 as a liquid permeable wrapping sheet of the coating mixture 43. The body fluid absorbing portion 5 further includes first, second, third, and fifth hot-melt adhesives HA1, HA2, HA3, -13-201249410 ΗA5 for joining the members. The cross-sectional shape of the core material 4 and the body fluid absorbing portion 5 in Fig. 4 is a cross section formed by cutting the body fluid absorbing portion 5 which is formed at a low temperature by liquid nitrogen by a sharp cutter, and the cross section thereof can be enlarged by about 30 times. Observe and confirm. In the body fluid absorbing portion 5 as viewed in the plane of the body fluid absorbing portion 5, the amount of the pulverized pulp 41 and the superabsorbent polymer particles 42 is almost constant regardless of the portion of the body fluid absorbing portion 5 per 1 cm 2 of the surface area of the body fluid absorbing portion 5. In other words, the amount of the pulverized pulp 41 and the superabsorbent polymer particles 42 per 1 cm 2 of the area of the flat inner sheet 3 shown in Fig. 4 is almost constant. However, in the cross section of Fig. 4, in the press section 51, by pressing the core material 4, in the press section 51, the pulverized pulp 41 and the superabsorbent polymer particles 42 are brought close to each other, and the collection is closely attached. The pulverized pulps 41 and the superabsorbent polymer particles 42 are also close to each other, and are in close contact with each other, and the superabsorbent polymer particles 42 are in a state in which the rubber blocks are easily formed. However, in the non-pressing portion 52, since the core material 4 is not pressed, or the pressing portion 51 is not pressed, the pulverized pulp 41 and the superabsorbent polymer particles 42 are separated from each other. In the press portion 51, the mixture 43 and the tissue 44 are joined by the hot-melt adhesive HA1, and it is important to maintain the shape of the press portion 51 regardless of whether or not the disposable diaper 1 is used. Figs. 3 and 4 The body fluid absorbing portion 5 in the state has the same composition as that of the body fluid absorbing portion 5, and has the same thickness, the thickness of which is the same as the thickness of the non-pressing portion 52, or a body fluid which is thicker than the thickness of the non-pressing portion 52. The absorbing portion (not shown) is obtained by applying embossing. In the embossing process of -14- 8 201249410, a roller having a pin for embossing corresponding to the press portion 51 is used, and it can be obtained by pressing the body fluid absorbing portion by a pin at room temperature or in a heated state. The thickness of the press portion 51 and the non-pressing portion 52 of the body fluid absorbing portion 5 thus obtained is in the state of including the inner sheet 3 and the outer sheet 6 except for the core material 4 and the surface sheet 2, and is manufactured by KEYENCE, which will be described later. The high-precision 2-dimensional laser displacement meter LJ-G030 is used for measurement. In the measurement of the thickness of the press portion 51, the press portion 51 at 1 〇 was selected from the width of 100 cm2, and the laser beam of the displacement meter was irradiated toward the bottom surface of the press portion 51, and the respective thicknesses were measured to obtain the average thickness of the thickness. When the thickness of the non-pressing portion 52 was measured, 10 thick portions were selected from the width of 100 cm 2 , and the thickness was measured by irradiating the laser light everywhere, and the average thickness of the thickness was determined. The press portion 51 in the body fluid absorbing portion 5 at the time of excretion of urine suppresses an increase in the pulverized pulp 41 which is squeezed by the press, and the superabsorbent polymer particles 42 which are close to each other by being pressed are easily formed with each other. The rubber block can inhibit the degree of expansion. As a result, it is possible to suppress the thickness of the body fluid absorbing portion 5 from being thickened around the press portion 5 1 and the periphery thereof. Further, since the non-pressing portion 52 is restricted by the respective press portions 51 whose thickness is not thick by the operation of the both side portions in Fig. 4, the press portion 5 1 ' is not in the press portion 52. It is also possible to suppress the case where the body fluid absorbing portion 5 becomes thick. Therefore, when the body fluid absorbing portion 5 of the illustrated example is compared with the body fluid absorbing portion in which the press portion 51 is not formed, the thickness of the body fluid absorbing portion 5 can be prevented from becoming significantly thicker in the crotch region 7 of the disposable diaper 1. In such a case, since the body fluid absorbing portion 5 having a thick thickness does not become in close contact with the skin or the gap between the skin and the skin is significantly narrowed -15-201249410, the so-called underarm region 7 can be suppressed. The feeling of moistening becomes stronger. Further, when the body fluid absorbing portion 5 having a large thickness is in a state of being sandwiched between the legs, the problem that the so-called body fluid absorbing portion 5 is abnormally expanded can be released or reduced. In the disposable diaper 1, in order to surely exert such an effect, it is also important to define the water absorption characteristics of the highly water-absorptive polymer particles 42. In the superabsorbent polymer particles 42 for achieving such a purpose, it is preferred to use a non-pressurized water absorption amount of 45 ml/g or less and a water absorption amount under a load of 14 g/g or less. The force-free pressure water absorption was measured using a Demand Wettalility Tester manufactured by Scientific Machine & Supply Co. The Tester used a 0.9% aqueous solution of sodium chloride in physiological saline and 250 nylon mesh (N-NO. 250HD manufactured by NBC Industries) in the net. The superabsorbent polymer particles are used in an amount of lg. The amount of non-pressurized water absorption in the present invention means the enthalpy after 5 minutes from the start of the water absorption test. For the measurement of the water absorption amount under the load, a plastic cylinder having an inner diameter of 26 mm formed by a 250 mm nylon mesh was used. The superabsorbent polymer particles of mass S are placed in the cylinder, and a piston having a predetermined weight is placed in the cylinder to obtain the total mass W1. The cylinder was placed in a petri dish placed in 25 g of physiological saline for 60 minutes. The mass fi W2 of the cylinder taken out from the culture dish was obtained, and the amount of water absorption under the load was obtained by the following formula.
荷重下吸水量（g/g) = (W2-W1) /S 在紙尿布1又爲了提高體液吸收部5的作用效果，可 使用雖爲透液性可是使體液往紙尿布1的前後方向擴散也 優的不織布等的薄片取代表面薄片2、或可接合於表面薄Water absorption amount under load (g/g) = (W2-W1) /S In order to improve the effect of the body fluid absorbing portion 5, the disposable diaper 1 can be used to diffuse the body fluid into the front and rear directions of the disposable diaper 1 although it is liquid permeable. Also, a sheet such as a non-woven fabric is used instead of the surface sheet 2, or can be bonded to a thin surface.
-16- 201249410 片2的全體或一部分使用。作爲這類的不織布，有形成不 織布的纖維的多數定向在紙尿布1的前後方向A者。在處 於圖4的狀態的體液吸收部5，當在壓榨部51，高吸水性 聚合物粒子42與粉碎紙獎41'薄紙44、表面薄片2等一 起被強烈按壓而成爲無法朝向周圍膨脹的狀態，或在粉碎 紙漿4 1彼此之間可保水的空間處於少的狀態時，會有體 液吸收部5的吸水速度、吸水量降低的情況。所以藉由在 使體液擴散的情況良好的薄片，使得朝向胯下域7被排泄 的體液的一部分朝向前後方向A擴散的情形，在防止紙尿 布1的洩漏、或壓低濕潤感上是有益的。 圖5雖是與表示實施態樣的一例的圖3同樣的圖，可 是，壓榨部51放大成看起來比圖3的這個更大。作爲壓 榨部51之中的一的圖5的壓榨部51a，是底面部的平面形 狀近似正三角形，具有三個凸部55a，且凸部55a分別內 接於假想的圓56。圓56的直徑E在1.5〜5mm的範圍。 鄰接於壓榨部51a的壓榨部51之中，在最接近於壓榨部 51a的壓榨部51b與壓榨部51a之間，壓榨部51b中的三 個凸部55b之中的一個凸部55b與壓榨部51a中的凸部 5 5a的一個相對。在互相相對的凸部55a與55b之間，形 成有非壓榨部52。壓榨部51a與壓榨部51b爲圖5的態樣 時，在兩壓榨部51a、51b之間，與凸部55a和55b沒有 相對的態樣相比，朝向該等兩壓榨部5 1 a、5 1 b之間延伸 的非壓榨部52的尺寸P變得比較短。在這樣的非壓榨部 52，與尺寸P大的時候相比，可將吸收體液後的厚度的變 -17- 201249410 化縮小。 圖6是與表示實施態樣的一例的圖1同樣的圖。在圖 6的紙尿布1，對於形成於體液吸收部5的壓榨部51的表 面薄片2的分佈密度，亦即在表面薄片2的每lcm2所形 成的壓榨部51的數量在前後方向A有變化。對表面薄片 2所畫成的點23的每lcm2的個數，在位於胯下域7的前 後方向A中的中央部的第1區61最多，在朝向前腰圍域 8排列的第2、第3區62、63逐漸變少。點23的每lcm2 的多寡表示壓榨部51的多寡，壓榨部51的每lcm2的數 量，是從胯下域7的中央部朝向前腰圍域8、與後腰圍域 9逐漸變少。在這樣的紙尿布1，在前後方向A中的胯下 域7的中央部，一面抑制吸收體液後的體液吸收部5的厚 度變厚的情形，一面藉由壓榨部51的存在，在體液吸收 速度不會太慢的第2〜第5區吸收體液，可防止在其中央 部體液滯留的情況。雖沒有圖示，可是紙尿布1僅形成有 第1、第2、第3區61、62、63，也可在沒有形成第4、 第5區64、65的態樣實施。又，形成有第1、第4、第5 區61、64、65，也可在沒有形成第2、第3區62、63的 態樣實施。再者，芯材4與含有這個的體液吸收部5僅存 在於胯下域7與前腰圍域8，也可在僅形成有第1、第2、 第3區61 '62、63的態樣實施、芯材4與含有這個的體 液吸收部5僅存在於胯下域7與後腰圍域9，也可在僅形 成有第1、第4、第5區61、64、65的態樣實施。再者， 又芯材4與含有這個的體液吸收部5僅存在於胯下域7,-16- 201249410 All or part of the film 2 is used. As such a non-woven fabric, most of the fibers forming the non-woven fabric are oriented in the front-rear direction A of the disposable diaper 1. In the body fluid absorbing portion 5 in the state of FIG. 4, the superabsorbent polymer particles 42 are strongly pressed together with the pulverized paper 41' thin paper 44, the surface sheet 2, and the like in the press portion 51, and are incapable of being inflated toward the periphery. In the case where the space in which the water can be retained between the pulverized pulps 4 1 is small, the water absorption speed and the water absorption amount of the body fluid absorbing portion 5 may be lowered. Therefore, it is advantageous to prevent the leakage of the disposable diaper 1 or to lower the moist feeling by the fact that a part of the body fluid discharged to the crotch region 7 is diffused toward the front-rear direction A by the sheet which is good in the case of diffusing the body fluid. Fig. 5 is a view similar to Fig. 3 showing an example of the embodiment, but the press portion 51 is enlarged to appear larger than this. The press portion 51a of Fig. 5, which is one of the press portions 51, has a planar shape of a bottom portion which is approximately an equilateral triangle, and has three convex portions 55a, and the convex portions 55a are respectively inscribed in an imaginary circle 56. The diameter E of the circle 56 is in the range of 1.5 to 5 mm. Among the press portions 51 adjacent to the press portion 51a, between the press portion 51b closest to the press portion 51a and the press portion 51a, one of the three convex portions 55b of the press portion 51b and the press portion One of the convex portions 5 5a in 51a is opposite. A non-pressing portion 52 is formed between the mutually opposing convex portions 55a and 55b. When the press portion 51a and the press portion 51b are in the form of Fig. 5, the two press portions 51a, 5 are oriented between the press portions 51a, 51b as compared with the convex portions 55a and 55b. The dimension P of the non-press section 52 extending between 1 b becomes relatively short. In such a non-pressing section 52, the thickness -17-201249410 after the absorption of the body fluid can be reduced as compared with the case where the size P is large. Fig. 6 is a view similar to Fig. 1 showing an example of an embodiment. In the disposable diaper 1 of Fig. 6, the distribution density of the surface sheet 2 formed on the press portion 51 of the body fluid absorbing portion 5, that is, the number of press portions 51 formed per 1 cm 2 of the surface sheet 2 is changed in the front-rear direction A. . The number of points per cm 2 of the dots 23 drawn on the surface sheet 2 is the largest in the first region 61 in the central portion in the front-rear direction A of the crotch region 7, and the second and second in the front waist region 8 Zones 62 and 63 are gradually becoming less. The number of the pressing portions 51 per point of the point 23 indicates the number of the press portions 51, and the number per 1 cm 2 of the press portion 51 is gradually decreased from the central portion of the crotch region 7 toward the front waist region 8 and the rear waist region 9. In the center portion of the crotch region 7 in the front-rear direction A, the thickness of the body fluid absorbing portion 5 after absorbing the body fluid is increased, and the body fluid is absorbed by the presence of the press portion 51. The second to fifth regions, which are not too slow, absorb body fluids and prevent the retention of body fluids in the central portion. Although not shown, the disposable diaper 1 may be formed only with the first, second, and third regions 61, 62, and 63, and may be implemented without forming the fourth and fifth regions 64 and 65. Further, the first, fourth, and fifth regions 61, 64, and 65 are formed, and the second and third regions 62 and 63 may not be formed. Further, the core material 4 and the body fluid absorbing portion 5 including this are present only in the crotch region 7 and the front waist region 8, and the first, second, and third regions 61'62, 63 may be formed. The core material 4 and the body fluid absorbing portion 5 containing the same are present only in the crotch region 7 and the back waist region 9, and may be implemented in the form in which only the first, fourth, and fifth regions 61, 64, and 65 are formed. . Further, the core material 4 and the body fluid absorbing portion 5 containing this are present only in the subgingival region 7,
-18- 201249410 也可僅在形成有第1區61的態樣實施。 圖7是與表示實施態樣的—例的圖4同樣的圖。圖7 中的壓榨部51相對於芯材4被形成，在其壓榨部51沒有 包含表面薄片2。在芯材4,藉由從表面薄片2朝向裏面 薄片3的方向壓榨混合體43與薄紙44b，亦即，藉由朝芯 材4的厚度方向壓榨，在芯材4形成有壓榨部51。表面薄 片2平坦擴大，在芯材4中的非壓榨部52經由熱熔接著 劑HA2接合。 在作爲圖7的態樣的體液吸收部5，使用膨鬆且柔軟 的肌膚觸感佳的不織布作爲表面薄片2時，藉由對其表面 薄片2形成有壓榨部51 ’可防止所謂表面薄片2的肌膚觸 感受損的問題發生。又，薄紙44b使用對此容易伸展者時 ，在形成圖7中的壓榨部51時，與使用在比鄰的壓榨部 51與51之間，成爲非壓榨部5 2的部位容易伸展的薄紙 44b的時候相比，形成對混合體4 3緊密壓接。其結果，非 壓榨部52吸收體液時所謂厚度變厚的傾向變弱，而成爲 即使吸收體液也不易膨脹的部分。再者，又藉由表面薄片 2從薄紙44b部分分離，而容易防止所謂因尿弄髒的芯材 4的顏色透過表面薄片看見的情況。 關於作爲圖7的態樣的芯材4，所謂壓榨部5 1的厚度 、以及所謂非壓榨部52的厚度是指：針對不包含表面薄 片2與裏面薄片3和外側薄片6的狀態的芯材4進行測量 時的値。可進行這樣的測量的芯材4,是在製造體液吸收 部5的工程，藉由抽出未接合有表面薄片2與裏面薄片3 -19- 201249410 的芯材4而可獲得。 圖8表示爲了觀察芯材4吸水時的厚度的變化所使用 的其芯材4中的壓榨部51的分佈狀態的圖。芯材4是以 具有17g/m2的質量的薄紙被覆均勻混合粉碎紙漿220g/m2 與表1記載的任一個高吸水性聚合物粒子220g/m2所獲得 的混合體4 3 (參痛圖7)者，具有圖7的剖面形狀，而形 成長度爲410mm寬幅爲145mm的矩形。圖中，可看見其 芯材4的薄紙44b、與被形成於薄紙44b的壓榨部51 »這 裡的壓榨部51的平面形狀，是一邊的長度Q近似3nim的 正三角形》壓榨部51又位在以假想線所示的正六角形的 各角部，在壓榨部51彼此之間，角部相互對向，角部與 角部僅分離距離P。壓榨部51中的芯材4的厚度、與壓 榨部5 1彼此之間所形成的芯材4的非壓榨部5 2的厚度記 載於表2。壓榨部51彼此的中心間距離L也又記載於表2 。觀察在該芯材4吸收人工尿取代水時的厚度的變化，並 將其結果整理在表2。 該觀察中’所使用的高吸水性聚合物粒子具有表1所 示的吸水特性者，亦即SAP-A、SAP-B、SAP-C的三種類 ，該等的高吸水性聚合物粒子爲市售者。 表1中的吸水倍率、保水倍率是依據JIS K 7223進行 測量。具體而言，將高吸水性聚合物粒子l.Og放入網袋 ，在生理食鹽水浸漬1小時》接著，拉起其網袋藉由懸掛 1 5分鐘去除水分，測量高吸水性聚合物粒子的吸水量作爲 吸水倍率。又’測量去除水分之後以離心分離器脫水之後 -20- 201249410 的網袋的重量求出保水倍率。 表2中’在人工尿使用對離子交換水101溶解尿素 2〇〇g、氯化鈉80g、硫酸鎂80g、氯化鈣80g、色素（青色 1號）約lg者。人工尿著有青色》 人工尿是將120ml分成3次，以5分間隔，對芯材4 的前後方向A與寬幅方向B的中央部各注入40ml讓其吸 收。注入時，使用滴定管。注入人工尿時的芯材4載置在 鋪設在水平的盤面之上的聚乙烯薄膜。 中心間距離表示爲了形成壓榨部所使用的壓花加工用 輥（未圖示）中的銷的中心間距離，該中心間距離是與芯 材中的壓榨部的中心間距離幾乎相同。 表2的「芯材的厚度」中的壓榨部與非壓榨部的厚度 是指：將注入人工尿之前的芯材放置在水平的台，使用 KEYENCE製高精度2次元雷射位移計LJ-G030，不與芯 材接觸的測量時的値。 表2的「非壓榨部的厚度的變化」中的人工尿注入前 的厚度與人工尿注入後的厚度是指：對放置在水平面的芯 材4，使具有直徑50mm的針盤式厚度規的探針從上接觸 施加測量荷重6 · 5 g/cm2，藉由讀取此時的計量的測量後的 値。人工尿注入後的厚度，是注入後經過5分所測量。 擴散長是測量從注入80ml人工尿後經過5分鐘往芯 材4的前後方向A擴散的人工尿的最大尺寸的値的平均値 (η = 5 )。 評價後的芯材中，人工尿注入後的厚度的變化小’且 -21 - 201249410 可判斷爲得以容許的程度的是在表2 ’注入1 20m丨的人工 尿之後的非壓榨部的厚度的增量（（T-To) /T〇)在2.2以 下的時候》可實現該增量的是高吸水性聚合物粒子爲 SAP-A的時候。又，SAP-A可發揮這樣的作用效果可想像 到的是從表1的評價內容開始針對SAP-A的無加壓吸水試 驗經過 5分鐘後的吸水量在45ml/g以下，更理想是在 40ml/g以下左右’何重下吸水量在14g/g以下，更理頻是 在12g/g以下左右的情況。又，壓榨部的厚g是依據非胃 觸式測量時，在非壓榨部的厚度的80%以下爲理想，& M 榨部中心間距離L是在2〜14mm爲理想》-18-201249410 can also be implemented only in the aspect in which the first region 61 is formed. Fig. 7 is a view similar to Fig. 4 showing an example of an embodiment. The press portion 51 in Fig. 7 is formed with respect to the core material 4, and the press sheet 51 does not include the surface sheet 2. In the core material 4, the mixture 43 and the thin paper 44b are pressed from the surface sheet 2 toward the inner sheet 3, that is, by pressing in the thickness direction of the core material 4, the press portion 51 is formed in the core material 4. The surface sheet 2 is flatly enlarged, and the non-pressing portion 52 in the core material 4 is joined via the hot-melt adhesive HA2. In the body fluid absorbing portion 5 as the aspect of FIG. 7, when a non-woven fabric having a bulky and soft skin feel is used as the surface sheet 2, the so-called surface sheet 2 can be prevented by forming the press sheet 51' on the surface sheet 2 thereof. The problem of damaged skin touch occurs. Further, when the thin paper 44b is easily stretched, when the press portion 51 in Fig. 7 is formed, the thin paper 44b which is easily stretched between the portions of the press portions 51 and 51 which are used in the non-pressing portion 52 is used. When compared to the time, the formation of the mixture 4 3 is tightly crimped. As a result, when the non-pressing portion 52 absorbs the body fluid, the thickness tends to be weak, and it becomes a portion that does not easily swell even if the body fluid is absorbed. Further, by partially separating the surface sheet 2 from the tissue 44b, it is easy to prevent the color of the core material 4 which is stained by urine from being seen through the surface sheet. With respect to the core material 4 as the aspect of FIG. 7, the thickness of the press portion 51 and the thickness of the so-called non-press portion 52 mean a core material in a state not including the surface sheet 2 and the inner sheet 3 and the outer sheet 6. 4 値 when measuring. The core material 4 which can be measured in this manner is obtained by manufacturing the body fluid absorbing portion 5 by extracting the core material 4 to which the surface sheet 2 and the back sheet 3 -19 to 201249410 are not joined. Fig. 8 is a view showing a distribution state of the press portion 51 in the core material 4 used for observing the change in thickness when the core material 4 absorbs water. The core material 4 is a mixture of 220 g/m2 uniformly mixed with pulverized pulp and 220 g/m2 of any of the superabsorbent polymer particles described in Table 1 on a tissue paper having a mass of 17 g/m 2 (see Figure 7). The cross-sectional shape of Fig. 7 was formed to form a rectangle having a length of 410 mm and a width of 145 mm. In the figure, the flat paper 44b of the core material 4 and the press portion 51 of the thin paper 44b can be seen in the planar shape of the press portion 51, and the length Q of one side is approximately 3 nim. The press portion 51 is again located. At each corner portion of the regular hexagon shown by the imaginary line, the corner portions are opposed to each other between the press portions 51, and the corner portion and the corner portion are separated by only the distance P. The thickness of the core material 4 in the press portion 51 and the thickness of the non-pressing portion 52 of the core material 4 formed between the press portions 51 are shown in Table 2. The center-to-center distance L between the press sections 51 is also shown in Table 2. The change in thickness when the core material 4 absorbed artificial urine instead of water was observed, and the results were summarized in Table 2. In the observation, the superabsorbent polymer particles used have the water absorption characteristics shown in Table 1, that is, three types of SAP-A, SAP-B, and SAP-C, and the superabsorbent polymer particles are Commercially available. The water absorption ratio and the water retention ratio in Table 1 were measured in accordance with JIS K 7223. Specifically, the superabsorbent polymer particles 1.0 g were placed in a mesh bag and immersed in physiological saline for 1 hour. Then, the mesh bag was pulled up, and the water was removed by hanging for 15 minutes to measure the superabsorbent polymer particles. The amount of water absorption is taken as the water absorption ratio. Further, the water retention ratio was determined by measuring the weight of the net bag of -20-201249410 after dehydration by a centrifugal separator after moisture removal. In Table 2, in the artificial urine, 2 g of urea, 80 g of sodium chloride, 80 g of magnesium sulfate, 80 g of calcium chloride, and a pigment (cyan No. 1) were dissolved in ion-exchanged water 101. Artificial urine has a cyan color. In the artificial urine, 120 ml is divided into three times, and 40 ml is injected into the central portion of the front and rear direction A and the wide direction B of the core material 4 at intervals of 5 minutes to be absorbed. When injecting, use a burette. The core material 4 when the artificial urine is injected is placed on a polyethylene film laid on a horizontal disk surface. The distance between the centers indicates the distance between the centers of the pins in the embossing processing rolls (not shown) used to form the press portion, which is almost the same as the distance between the centers of the press portions in the core material. The thickness of the press section and the non-press section in the "thickness of the core material" in Table 2 means that the core material before the artificial urine is placed on the horizontal stage, and the high-precision 2-dimensional laser displacement meter LJ-G030 manufactured by KEYENCE is used. , 値 when measuring without contact with the core material. The thickness before the artificial urine injection and the thickness after the artificial urine injection in the "change in the thickness of the non-pressing portion" in Table 2 means that the core material 4 placed on the horizontal surface has a dial gauge having a diameter of 50 mm. The probe applied a measurement load of 6 · 5 g/cm 2 from the upper contact by reading the measured enthalpy of the measurement at this time. The thickness after artificial urine injection is measured after 5 minutes after injection. The diffusion length is an average 値 (η = 5) of 最大 which measures the maximum size of artificial urine which is diffused to the front-back direction A of the core material 4 after injecting 80 ml of artificial urine for 5 minutes. In the core material after the evaluation, the change in the thickness after the artificial urine injection was small, and the degree of the non-pressing portion after the artificial urine of the injection of 1 20 m丨 was judged to be acceptable to the extent of -21 - 201249410. When the increment ((T-To) / T〇) is below 2.2, the increment can be achieved when the superabsorbent polymer particles are SAP-A. Further, SAP-A can exert such an effect. It is conceivable that the water absorption amount after 5 minutes from the non-pressurized water absorption test for SAP-A from the evaluation contents of Table 1 is 45 ml/g or less, and more preferably The amount of water absorption below 40 ml/g is less than 14 g/g, and the frequency is more than 12 g/g. Further, the thickness g of the press portion is preferably 80% or less of the thickness of the non-pressing portion when measured according to the non-gastric touch type, and the distance L between the center portions of the press portion is ideally 2 to 14 mm.
【表1】 高吸水性聚合物粒子的_ SAP-A SAP-B —----- C Λ D P 吸水倍率(g/g) 60.4 ------- 63.5 50 OQ 保水倍率(g/g) 39.7 40.2 無加壓吸水量(ml/g) 39.3 '----- 61.3 51 荷重下吸水量(g/g) 11.6 16.0 22 -22- 201249410 人工尿之擴散長 n=5 平均 220mm 215mm 195mm 實測範圍 20S-225mm 205-220mni 190-200n»m 非壓榨部厚度的 增量 (Τ-Τ〇)/Τ〇 120ml 注入 <〇 tn CM eg 3 5 cp S ιο SJ CD 3 80ml 注入 cq CO 马 CO 3.0B tn (O s 40ml 注入 s· 04 CO o τ— a> m S| m li Si ljJ w ogfei H tt 120ml 注入 T· i2 2 2 τ— 热· σ> 3 r— 80ml 注入 5 〇« ce> 5· σ> to T- ca cd 09 3 40ml 注入 CO }3 S 2 to i0 $ 吟· 人工尿注入前 的厚度 T0(mm) 5 «η cp « c〇 Ϊ5 c〇 s li |i . iM^xtoo (a to S s GO o 非壓榨苗 1 t〇(mn〇 CO <〇 I I 1 «1 c*> S «ί CO 8 :壓榨部 ti〇m〇 1 J 1 5 a CM 壓榨部 中心間 距離L i <〇 1 I 1 6mm i 14mm 22mm 辟 sn 髙吸水性 聚合物 粒子的麵 SAP-A SAP-A SAP-B SAP-C SAP-A SAP-A ! SAP-A SAP-A 9 闺 f 鎰 |比較例j@ [tb較例③ Q 镗 f 瑙 揭 曾 鏟 -23 - 201249410 該發明的實施態樣之一，其中，壓榨部51在芯材4 中，也可被形成在與裏面薄片3對向的面。在此時的裏面 薄片3有包含在壓榨部51的情況、與沒有包含的情況。 實施態樣的其他之一，用後即棄式紙尿布可以短褲型 紙尿褲取代圖示例的開放型紙尿布1而予以實施。 【圖式簡單說明】 〔圖1〕用後即棄式紙尿布的部分破斷俯視圖。 〔圖2〕表示圖1的Π-ll線切斷面的圖。 〔圖3〕爲圖1的部分in的放大圖。 〔圖4〕表示圖3的IV-IV線切斷面的圖》 〔圖5〕是與表示實施態樣的一例的圖3同樣的圖。 〔圖6〕是與表示實施態樣的一例的圖！同樣的圖。 〔圖7〕是與表示實施態樣的一例的圖4同樣的圖。 〔圖8〕表示壓榨部的分佈狀態的—例的圖β 【主要元件符號說明】 1 :紙尿布 2 :表面薄片 3 :裏面薄片 4 :芯材 5 :體液吸收部 7 :胯下域 8 :前腰圍域 ⑧ 201249410 9 :後腰圍域 4 1 :粉碎紙漿 42 :高吸水性聚合物粒子 44、44a、4 4b ·包裹薄片 51 :壓榨部 52 :非壓榨部 A :前後方向 B :寬幅方向 HA1 :熱熔接著劑 -25[Table 1] Superabsorbent polymer particles _ SAP-A SAP-B —----- C Λ DP Water absorption ratio (g/g) 60.4 ------- 63.5 50 OQ Water retention ratio (g/ g) 39.7 40.2 No pressure water absorption (ml/g) 39.3 '----- 61.3 51 Water absorption under load (g/g) 11.6 16.0 22 -22- 201249410 Artificial urine diffusion length n=5 Average 220mm 215mm 195mm Measured range 20S-225mm 205-220mni 190-200n»m Non-press section thickness increment (Τ-Τ〇)/Τ〇120ml Injection<〇tn CM eg 3 5 cp S ιο SJ CD 3 80ml Injection cq CO Horse CO 3.0B tn (O s 40ml injection s· 04 CO o τ— a> m S| m li Si ljJ w ogfei H tt 120ml injection T· i2 2 2 τ—heat· σ> 3 r—80ml injection 5 〇 « ce> 5· σ> to T- ca cd 09 3 40ml Injection CO }3 S 2 to i0 $ 吟· Thickness before artificial urine injection T0(mm) 5 «η cp « c〇Ϊ5 c〇s li |i iM^xtoo (a to S s GO o non-pressing seedlings 1 t〇 (mn〇CO <〇II 1 «1 c*> S «ί CO 8 : press section ti〇m〇1 J 1 5 a CM The distance between the center of the press section is L i <〇1 I 1 6mm i 14mm 22mm SAP-A SAP-A SAP-A SAP-A SAP-A SAP-A SAP-A SAP-A 9 闺f 镒|Comparative Example j@ [tbComparative Example 3 Q 镗f Nau Jie Zeng Shovel-23 - 201249410 One of the embodiments of the present invention, wherein the press portion 51 is formed in the core material 4 on the surface facing the inner sheet 3. At this time, the inner sheet 3 is contained in the press. The case of the part 51 and the case where it is not included. The disposable disposable diaper can be implemented by replacing the open type diaper 1 of the illustration example with the disposable disposable diaper. [Simplified illustration] Figure 1 is a partially broken plan view of the disposable disposable diaper. Fig. 2 is a view showing a Π-ll line cut surface of Fig. 1; FIG. 3 is an enlarged view of a portion in of FIG. 1. Fig. 4 is a view similar to Fig. 3 showing an example of an embodiment, showing a cut surface of the line IV-IV in Fig. 3 (Fig. 5). Fig. 6 is a view showing an example of an embodiment! The same picture. Fig. 7 is a view similar to Fig. 4 showing an example of an embodiment. [Fig. 8] Fig. 7 showing an example of the distribution state of the press section. [Description of main component symbols] 1 : Paper diaper 2: Surface sheet 3: Inner sheet 4: Core material 5: Body fluid absorbing portion 7: Underarm region 8: Front waist area 8 201249410 9 : Back waist area 4 1 : pulverized pulp 42 : super absorbent polymer particles 44 , 44 a , 4 4 b · wrapping sheet 51 : press section 52 : non-press section A : front and rear direction B : width direction HA1: hot melt adhesive-25