JP2007175515A - Disposable body fluid treating article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable body fluid treating article, preventing the flow of body fluid to longitudinal and lateral directions and surely absorbing and holding the body fluid in a core. <P>SOLUTION: The body fluid treating article 1 includes: a liquid impermeable base sheet 3 located on a non-skin abutting surface side, the liquid absorptive core 4 attached to the inside surface of the base sheet 3; and a liquid permeable front surface member 2 located on a skin abutting surface side. The front surface member 2 has two or more lines of projecting parts 2 raised upward from the core 4, extended in the lateral direction and lined up at predetermined spaces in the longitudinal direction, two or more lines of recessed parts 2b extended in the lateral direction between the projecting parts 2a and a number of apertures 2c penetrating these parts in the thickness direction thereof. The apertures 2c are lined up at predetermined spaces in the longitudinal direction and the lateral direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Translated fromJapanese

本発明は、使い捨ておむつや生理用ナプキン、吸収性パッド等の使い捨ての体液処理物品に関する。  The present invention relates to disposable body fluid treatment articles such as disposable diapers, sanitary napkins and absorbent pads.

特開平１１−３１８９７６号公報は、肌当接側に位置する液透過性表面シートと、肌非当接側に位置する液不透過性裏面シートと、それらシートの間に介在する吸液性コアとから構成され、縦方向に前胴周り域および後胴周り域と、それら胴周り域の間に位置する股下域とを備え、コアの上部に位置して横方向へ延びる複数条の凸部が縦方向へ所与寸法離間して並ぶ使い捨ておむつを開示している。  Japanese Patent Application Laid-Open No. 11-318976 discloses a liquid-permeable top sheet positioned on the skin contact side, a liquid-impermeable back sheet positioned on the skin non-contact side, and a liquid-absorbent core interposed between the sheets. A plurality of protrusions extending in the lateral direction at the upper part of the core, and including a front waistline region and a back waistline region in the vertical direction, and a crotch region positioned between the waistline regions. Discloses disposable diapers which are arranged in the longitudinal direction with a given distance from each other.

凸部は、吸収性素材とそれを被覆する前記表面シートとから形成され、おむつの略後半分に位置している。このおむつでは、それら凸部が軟便や水様便等の流動性排泄物に対する障壁を形成し、排泄物の縦方向への流動を防止することができる。  A convex part is formed from an absorptive material and the said surface sheet which coat | covers it, and is located in the substantially back half of a diaper. In this diaper, these convex portions can form a barrier against fluid excrement such as soft stool and watery stool, thereby preventing the excrement from flowing in the vertical direction.

前記公報に開示のおむつは、流動性排泄物の横方向への流動を防止する手段を有さず、表面シート上を拡散した排泄物がおむつの両側縁部へ向かって流動することを防ぐことができない。このおむつでは、排泄物がコアの両側縁の外側に漏出してそこに滞留してしまう場合がある。  The diaper disclosed in the above publication does not have means for preventing the flow of fluid excrement in the lateral direction, and prevents excrement diffused on the top sheet from flowing toward both side edges of the diaper. I can't. In this diaper, excrement may leak to the outside of both side edges of the core and stay there.

本発明の課題は、尿や軟便、水様便、経血等の体液の縦方向と横方向とへの流動を防止することができ、体液をコアに確実に吸収、保持させることができる使い捨ての体液処理物品を提供することにある。  An object of the present invention is to prevent a body fluid such as urine, loose stool, watery stool, menstrual blood from flowing in the longitudinal direction and the lateral direction, and to be able to reliably absorb and hold the body fluid in the core An object of the present invention is to provide a body fluid treatment article.

前記課題を解決するための本発明の前提は、肌非当接側に位置して縦方向へ延びる両側縁部および横方向へ延びる両端縁部を画成する液不透過性ベースシートと、前記ベースシートの内面に取り付けられた吸液性コアと、肌当接側に位置して前記コアの少なくとも一部を覆う液透過性表面部材とから構成され、前記表面部材が、前記コアから上方へ隆起して前記横方向へ延びるとともに前記縦方向へ所与寸法離間して並ぶ複数条の凸部と、前記凸部の間を前記横方向へ延びる複数条の凹部とを有する使い捨ての体液処理物品である。  The premise of the present invention for solving the above-mentioned problems is that the liquid-impermeable base sheet is located on the skin non-contact side and defines both side edges extending in the vertical direction and both side edges extending in the horizontal direction, A liquid-absorbent core attached to the inner surface of the base sheet, and a liquid-permeable surface member that is located on the skin contact side and covers at least a part of the core, the surface member extending upward from the core A disposable bodily fluid treatment article having a plurality of protrusions that protrude and extend in the lateral direction and are arranged at a predetermined distance in the vertical direction, and a plurality of recesses that extend in the lateral direction between the protrusions. It is.

前記前提における本発明の特徴は、前記表面部材がその厚み方向へ貫通して体液が通過可能な多数の開孔部を有し、前記開孔部が前記縦方向と前記横方向とへ所与寸法離間して並んでいることある。  The feature of the present invention based on the premise is that the surface member has a large number of apertures through which the body fluid can pass through in the thickness direction, and the apertures are provided in the vertical direction and the horizontal direction. They may be lined up apart from each other.

本発明の実施の態様の一例としては、前記開孔部が前記凹部に形成されて前記横方向へ所与寸法離間して並んでいる。  As an example of an embodiment of the present invention, the apertures are formed in the recesses and are arranged at a given distance in the lateral direction.

本発明の実施の態様の他の一例としては、前記開孔部が前記凸部に形成されて前記横方向へ所与寸法離間して並び、前記縦方向へ隣り合う前記凸部では、前記開孔部が前記縦方向へ連なることなく該縦方向へ互い違いに並んでいる。  As another example of the embodiment of the present invention, the opening portions are formed in the convex portions and are arranged at a given distance in the lateral direction, and the convex portions adjacent to each other in the longitudinal direction have the openings. The holes are alternately arranged in the vertical direction without being continuous in the vertical direction.

本発明の実施の態様の他の一例としては、前記縦方向へ連なる前記開孔部の個数が５〜２５個、前記横方向へ連なる前記開孔部の個数が２〜１０個の範囲にあり、前記開孔部の面積が１５〜６００ｍｍ^２の範囲にある。As another example of the embodiment of the present invention, the number of the opening portions connected in the vertical direction is in the range of 5 to 25, and the number of the opening portions in the horizontal direction is in the range of 2 to 10. The area of the aperture is in the range of 15 to 600 mm² .

本発明の実施の態様の他の一例としては、前記表面部材が多数の親水性繊維と高吸収性ポリマー粒子とのうちの少なくとも前記親水性繊維からなる繊維集合物であり、前記親水性繊維の坪量が前記凸部の厚み方向上方から厚み方向下方へ向かって次第に増加するとともに、前記凹部の厚み方向上方から厚み方向下方へ向かって次第に増加している。  As another example of the embodiment of the present invention, the surface member is a fiber assembly composed of at least the hydrophilic fiber among a large number of hydrophilic fibers and superabsorbent polymer particles, The basis weight gradually increases from the upper part of the convex part in the thickness direction toward the lower part in the thickness direction, and gradually increases from the upper part in the thickness direction of the concave part to the lower part in the thickness direction.

本発明の実施の態様の他の一例としては、前記親水性繊維の坪量が前記凸部の外周面から前記凸部の厚み方向中央部分に向かって次第に増加している。  As another example of the embodiment of the present invention, the basis weight of the hydrophilic fiber gradually increases from the outer peripheral surface of the convex portion toward the central portion in the thickness direction of the convex portion.

本発明にかかる使い捨ての体液処理物品によれば、表面部材の凸部が体液の縦方向の流動を防止するとともに、表面部材に形成された開孔部が体液の横方向の流動を防止するので、体液が表面部材の外面を拡散したとしても、体液が表面部材の周縁の外側へ漏出することはない。この物品では、体液が表面部材を透過するとともに開孔部を通過してコアに達し、コアに吸収、保持される。  According to the disposable body fluid treatment article of the present invention, the convex portion of the surface member prevents the body fluid from flowing in the vertical direction, and the opening formed in the surface member prevents the body fluid from flowing in the lateral direction. Even if the body fluid diffuses on the outer surface of the surface member, the body fluid does not leak to the outside of the peripheral edge of the surface member. In this article, the body fluid passes through the surface member, passes through the opening, reaches the core, and is absorbed and held by the core.

表面部材を形成する親水性繊維の坪量が凸部と凹部との厚み方向上方から厚み方向下方へ向かって次第に増加している物品では、表面部材に滲入した体液が毛細管現象によって表面部材の厚み方向上方から厚み方向下方へ向かって移動し、コアに吸収、保持されるので、体液が表面部材の外面に逆戻りすることはない。  In an article in which the basis weight of the hydrophilic fiber forming the surface member is gradually increasing from the upper part in the thickness direction to the lower part in the thickness direction of the convex part and the concave part, the body fluid infiltrated into the surface member is thickened by the capillary phenomenon. Since it moves from the upper direction to the lower thickness direction and is absorbed and held by the core, the body fluid does not return to the outer surface of the surface member.

開孔部が表面部材の凸部を縦方向へ互い違いに並んでいる物品では、隣り合う凸部において開孔部が縦方向へ連なることはないので、凸部が体液に対する障壁としての機能を失うことはなく、体液の縦方向の流動を防止することができる。また、この物品では、凸部に体液が排泄されたとしても、体液が凸部に形成された開孔部を通ってコアに達し、コアに吸収、保持されるので、体液の凸部における拡散を防止することができる。  In an article in which the apertures are alternately arranged in the vertical direction with the convex portions of the surface member, the apertures do not continue in the vertical direction in adjacent convex portions, so the convex portion loses its function as a barrier against body fluid. There is no such thing, and it is possible to prevent the body fluid from flowing in the longitudinal direction. Further, in this article, even if the bodily fluid is excreted in the convex portion, the bodily fluid reaches the core through the opening formed in the convex portion, and is absorbed and held in the core. Can be prevented.

添付の図面を参照し、本発明にかかる使い捨ての体液処理物品の詳細を、開放型の使い捨ておむつと生理用ナプキンとを例として説明すると、以下のとおりである。  The details of the disposable body fluid treatment article according to the present invention will be described with reference to the accompanying drawings, taking an open-type disposable diaper and a sanitary napkin as examples.

図１，２は、使い捨ておむつ１の部分破断斜視図と、図１の表面部材２の斜視図とであり、図３，４は、図１のＡ−Ａ線矢視断面図と、図１のＢ−Ｂ線矢視断面図とである。図１，２では、横方向を矢印Ｘで示し、縦方向を矢印Ｙで示す。なお、表面部材２とベースシート３との内面とは、コア４に対向する面をいい、それらの外面とは、コア４に非対向の面をいう。  1 and 2 are a partially broken perspective view of the disposable diaper 1 and a perspective view of thesurface member 2 of FIG. 1, and FIGS. 3 and 4 are cross-sectional views taken along line AA in FIG. It is a BB sectional view taken on the line. 1 and 2, the horizontal direction is indicated by an arrow X, and the vertical direction is indicated by an arrow Y. The inner surface of thesurface member 2 and thebase sheet 3 refers to the surface facing thecore 4, and the outer surface refers to the surface not facing thecore 4.

おむつ１は、肌当接側に位置する液透過性表面部材２と、肌非当接側に位置する液不透過性ベースシート３と、それらの間に介在する吸液性コア４と、実質的に液不透過性の防漏カフ５とから構成されている。コア４は、表面部材２とベースシート３との内面に接合されている。おむつ１は、縦方向に前胴周り域１４および後胴周り域１６と、それら胴周り域１４，１６の間に位置する股下域１５とを有する。  The diaper 1 includes a liquid-permeable surface member 2 positioned on the skin contact side, a liquid-impermeable base sheet 3 positioned on the skin non-contact side, a liquid-absorbent core 4 interposed therebetween, And a liquid-impervious leak-proof cuff 5. Thecore 4 is joined to the inner surfaces of thesurface member 2 and thebase sheet 3. The diaper 1 has afront waistline region 14 and aback waistline region 16 in the vertical direction, and acrotch region 15 positioned between thewaistline regions 14 and 16.

ベースシートは３、互いに重なり合う実質的に液不透過性の二枚の繊維不織布３ａ，３ｂから形成され、その平面形状が砂時計型を呈する。ベースシート３は、横方向へ延びる両端縁部６と縦方向へ延びる両側縁部７とを画成している。両側縁部７は、股下域１４において横方向内方へ向かって弧を画いている。  Thebase sheet 3 is formed of two substantially liquid-impermeable fibernonwoven fabrics 3a and 3b that overlap each other, and its planar shape has an hourglass shape. Thebase sheet 3 defines bothedge portions 6 extending in the horizontal direction and bothside edge portions 7 extending in the vertical direction. Theside edges 7 are arced inwardly in thecrotch region 14.

両端縁部６には、横方向へ延びる帯状の胴周り用弾性部材８が伸長状態で取り付けられている。両側縁部７には、股下域１５を縦方向へ延びる複数条の脚周り用弾性部材９が伸長状態で取り付けられている。胴周り用弾性部材８と脚周り用弾性部材９とは、ベースシート３を形成する不織布３ａ，３ｂの間に介在し、それら不織布３ａ，３ｂに固着されている。  A belt-likeelastic member 8 around the waist that extends in the lateral direction is attached to bothend edges 6 in an extended state. A plurality of leg-aroundelastic members 9 extending in thecrotch region 15 in the longitudinal direction are attached to theside edges 7 in an extended state. The waistelastic member 8 and the legelastic member 9 are interposed between thenonwoven fabrics 3a and 3b forming thebase sheet 3, and are fixed to thenonwoven fabrics 3a and 3b.

表面部材２は、多数の親水性繊維からなる繊維集合物１３であり、縦方向へ長い略矩形を呈する。表面部材２は、カフ５の間に位置し、股下域１５を中心に前後胴周り域１４，１６へ向かって延びている。表面部材２は、コア４から上方へ隆起して横方向へ延びる複数条の凸部２ａと、凸部２ａの間に位置して横方向へ延びる複数条の凹部２ｂとを有する。凸部２ａは、縦方向へ所与寸法離間して並んでいる。  Thesurface member 2 is afiber assembly 13 made of a large number of hydrophilic fibers, and has a substantially rectangular shape that is long in the vertical direction. Thesurface member 2 is located between thecuffs 5 and extends from thecrotch region 15 toward the front andrear waist regions 14 and 16. Thesurface member 2 has a plurality ofprotrusions 2a that protrude upward from thecore 4 and extend in the lateral direction, and a plurality ofrecesses 2b that extend between theprotrusions 2a and extend in the horizontal direction. Theprotrusions 2a are arranged in the vertical direction with a given distance.

表面部材２では、それを形成する親水性繊維の坪量が凸部２ａの厚み方向上方から厚み方向下方へ向かって次第に増加するとともに、凹部２ｂの厚み方向上方から厚み方向下方へ向かって次第に増加している。表面部材２では、親水性繊維の密度が凸部２ａと凹部２ｂとの厚み方向上方から厚み方向下方へ向かって次第に高くなっている。表面部材２の凹部２ｂには、表面部材２を厚み方向へ貫通する多数の開孔部２ｃが横方向へ所与寸法離間して並んでいる。  In thesurface member 2, the basis weight of the hydrophilic fiber forming the surface gradually increases from the thickness direction of theconvex portion 2 a toward the thickness direction downward, and gradually increases from the thickness direction of theconcave portion 2 b toward the thickness direction downward. is doing. In thesurface member 2, the density of the hydrophilic fibers is gradually increased from the upper side in the thickness direction of theconvex portions 2a and theconcave portions 2b to the lower side in the thickness direction. In therecess 2b of thesurface member 2, a large number ofapertures 2c penetrating thesurface member 2 in the thickness direction are arranged at a given distance in the lateral direction.

表面部材２では、その外面に排泄された尿や軟便、水様便等の流動性排泄物が表面部材２を透過可能かつ開孔部２ｃを通過可能である。表面部材２では、それを形成する親水性繊維の坪量がコア４へ向かって次第に増加しているので、それに滲入した排泄物が毛細管現象によって表面部材２の厚み方向上方から厚み方向下方へ向かって移動する。表面部材２に滲入した排泄物は、それを透過してコア４に達し、コア４に吸収、保持されるので、排泄物が表面部材２の外面に逆戻りすることはない。  In thesurface member 2, fluid excrement such as urine, soft stool, and watery stool excreted on the outer surface can pass through thesurface member 2 and can pass through theopening 2 c. In thesurface member 2, the basis weight of the hydrophilic fibers forming the surface gradually increases toward thecore 4, and therefore excrement that has infiltrated into thesurface member 2 moves from the upper side in the thickness direction to the lower side in the thickness direction due to capillary action. Move. The excrement that has infiltrated into thesurface member 2 passes through it, reaches thecore 4, and is absorbed and held by thecore 4, so that the excrement does not return to the outer surface of thesurface member 2.

表面部材２では、排泄物が表面部材２に滲入する以前に、それが表面部材２の外面を拡散したとしても、表面部材２の凸部２ａが排泄物に対する障壁となるので、排泄物の縦方向への流動を防ぐことができる。また、表面部材２では、排泄物が凹部２ｂを横方向へ拡散したとしても、拡散する過程において排泄物が開孔部２ｃに進入し、開孔部２ｃを通ってコア４に吸収、保持される。ゆえに、表面部材２では、排泄物の横方向への流動を防止することができる。  In thesurface member 2, even if it diffuses on the outer surface of thesurface member 2 before the excrement enters thesurface member 2, theconvex portion 2 a of thesurface member 2 becomes a barrier against the excrement. Flow in the direction can be prevented. Moreover, in thesurface member 2, even if excrement diffuses in therecess 2b in the lateral direction, excrement enters theopening 2c in the diffusion process, and is absorbed and held by thecore 4 through the opening 2c. The Therefore, in thesurface member 2, the flow of excrement in the lateral direction can be prevented.

表面部材２では、縦方向へ連なる開孔部２ｃの個数が５〜２５個、横方向へ連なる開孔部２ｃの個数が２〜１０個の範囲にあることが好ましい。また、表面部材２では、開孔部２ｃの面積が１５〜６００ｍｍ^２の範囲にあることが好ましい。開孔部２ｃの面積が１５ｍｍ^２未満の場合では、排泄物が開孔部２ｃを通過し難く、排泄物の横方向の拡散を防ぐことができない。開孔部２ｃの面積が６００ｍｍ^２を超過すると、開孔部２ｃの個数にもよるが、表面部材２の大半を開孔部２ｃが占めることになり、表面部材２に複数条の凸部２ａを形成することが難しい。In thesurface member 2, it is preferable that the number of theopening portions 2c continuous in the vertical direction is 5 to 25 and the number of theopening portions 2c continuous in the horizontal direction is in the range of 2 to 10. Further, thesurface member 2, it is preferable that the area of theopening portion 2c is in the range of 15～600Mm^2. When the area of the opening 2c is less than 15 mm² , the excrement hardly passes through the opening 2c, and the lateral diffusion of the excrement cannot be prevented. If the area of theaperture 2c exceeds 600 mm² , theaperture 2c occupies most of thesurface member 2 depending on the number ofapertures 2c, and thesurface member 2 has a plurality ofconvex portions 2a. Difficult to form.

おむつ１では、表面部材２の周縁の外側に排泄物が漏出することはなく、排泄物をコア４に確実に吸収、保持させることができる。おむつ１では、それを着用したときに、表面部材２の凸部２ａが着用者の肌に接触するので、表面部材２の外面全域が着用者の肌に接触することはなく、着用者の肌に対する表面部材２の接触面積を少なくすることができる。  In the diaper 1, the excrement does not leak to the outside of the peripheral edge of thesurface member 2, and the excrement can be reliably absorbed and held by thecore 4. In the diaper 1, since theconvex portion 2 a of thesurface member 2 comes into contact with the wearer's skin when the diaper 1 is worn, the entire outer surface of thesurface member 2 does not come into contact with the wearer's skin. The contact area of thesurface member 2 with respect to can be reduced.

後胴周り域１６の両側縁部７には、一対のテープファスナ１０が取り付けられている。前胴周り域１４におけるベースシート３の外面には、テープファスナ１０の止着域となるターゲットテープ１１が取り付けられている。  A pair oftape fasteners 10 are attached to bothside edge portions 7 of therear waistline region 16. Atarget tape 11 serving as a fastening region of thetape fastener 10 is attached to the outer surface of thebase sheet 3 in thefront waistline region 14.

テープファスナ１０は、後胴周り域１６の両側縁部７に固着された基端部と、ターゲットテープ１１に係脱可能に止着する自由端部とを有する。テープファスナ１０の自由端部には、粘着剤（図示せず）が塗布されている。自由端部は、表面部材２の外面の側へ向かって折曲され、カフ５に仮着されている。ターゲットテープ１１は、可撓性を有するプラスチックフィルムから形成されている。  Thetape fastener 10 has a base end portion fixed to bothside edge portions 7 of therear waist region 16 and a free end portion detachably fastened to thetarget tape 11. An adhesive (not shown) is applied to the free end of thetape fastener 10. The free end is bent toward the outer surface of thesurface member 2 and is temporarily attached to thecuff 5. Thetarget tape 11 is formed from a flexible plastic film.

カフ５は、ベースシート３の両側縁部７を縦方向へ延びている。カフ５は、コア４の両側縁４ｂの外側近傍を縦方向へ延びる固定縁部５ａと、固定縁部５ａに並行して縦方向へ延びる自由縁部５ｂと、前後胴周り域１４，１６に位置しておむつ１の横方向内方へ倒伏した固定両端部５ｃとを有する。自由縁部５ｂには、縦方向へ延びる弾性部材１２が伸長状態で取り付けられている。弾性部材１２は、自由縁部５ｂの一部に被覆されている。  Thecuff 5 extends on bothside edges 7 of thebase sheet 3 in the vertical direction. Thecuff 5 includes a fixededge portion 5a extending in the vertical direction in the vicinity of the outer sides of bothside edges 4b of thecore 4, afree edge portion 5b extending in the vertical direction in parallel with the fixededge portion 5a, and front andrear waist regions 14,16. It has a fixed bothend portion 5c lying and lying inward in the lateral direction of the diaper 1. Anelastic member 12 extending in the vertical direction is attached to thefree edge 5b in an extended state. Theelastic member 12 is covered by a part of thefree edge 5b.

カフ５では、固定縁部５ａから横方向外方へ側縁部５ｄが延びている。カフ５は、その固定縁部５ａがベースシート３の側縁部７に固着され、その固定両端部５ｃがベースシート３の端縁部６に固着されている。  In thecuff 5, aside edge 5d extends laterally outward from the fixededge 5a. The fixededge 5 a of thecuff 5 is fixed to theside edge 7 of thebase sheet 3, and the fixed both ends 5 c are fixed to theend edge 6 of thebase sheet 3.

図１では、おむつ１が表面部材２を内側にして縦方向へ湾曲し、カフ５の自由縁部５ｂが縦方向へ収縮して自由縁部５ｂが表面部材２の上方へ起立している。おむつ１では、起立したカフ５の自由縁部５ｂが排泄物に対する障壁を形成し、股下域１５における両側縁部７からの排泄物の漏れを防ぐことができる。  In FIG. 1, the diaper 1 is bent in the vertical direction with thesurface member 2 inside, thefree edge 5 b of thecuff 5 is contracted in the vertical direction, and thefree edge 5 b stands above thesurface member 2. In the diaper 1, thefree edge 5 b of thestanding cuff 5 forms a barrier against excrement, and the excrement leaks from the side edges 7 in thecrotch region 15 can be prevented.

おむつ１では、ベースシート３の端縁部６がコア４の端縁４ａから縦方向外方へ延び、ベースシート３の側縁部７とカフ５の側縁部５ｄとがコア４の側縁４ｂから横方向外方へ延びている。側縁部７と側縁部５ｄとは、それら側縁部７，５ｄの互いに重なり合う部分が固着されている。  In the diaper 1, theedge 6 of thebase sheet 3 extends from theedge 4 a of thecore 4 outward in the vertical direction, and theside edge 7 of thebase sheet 3 and theside edge 5 d of thecuff 5 are side edges of thecore 4. 4b extends outward in the lateral direction. Theside edge portion 7 and theside edge portion 5d are fixed to the overlapping portions of theside edge portions 7 and 5d.

おむつ１を着用するには、後胴周り域１６に位置するベースシート３の両側縁部７を前胴周り域１４に位置するベースシート３の両側縁部７の外側に重ね合わせ、テープファスナ１０の自由端部をターゲットテープ１１に止着して前後胴周り域１４，１６を連結する。前後胴周り域１４，１６が連結されたおむつ１には、胴周り開口と、脚周り開口とが画成される。  In order to wear the diaper 1, bothside edges 7 of thebase sheet 3 located in therear waistline region 16 are overlapped on the outside of bothside edges 7 of thebase sheet 3 located in thefront waistline region 14, and thetape fastener 10. Are connected to thetarget tape 11 to connect the front andrear waist regions 14 and 16. The diaper 1 to which the front andrear waist areas 14 and 16 are connected has a waist opening and a leg opening.

おむつ１では、表面部材２が後胴周り域１６を除く股下域１５と前胴周り域１４とに位置していてもよく、表面部材２が前胴周り域１４を除く股下域１５と後胴周り域１６とに位置していてもよい。また、おむつ１では、表面部材２が股下域１５を除く前胴周り域１４と後胴周り域１６との少なくとも一方に位置していてもよい。  In the diaper 1, thesurface member 2 may be located in thecrotch region 15 and thefront waist region 14 excluding theback waist region 16, and thesurface member 2 is located in thecrotch region 15 and the back waist except thefront waist region 14. It may be located in the surroundingarea 16. In the diaper 1, thesurface member 2 may be located in at least one of thefront waistline region 14 and theback waistline region 16 excluding thecrotch region 15.

おむつ１では、表面部材２を形成する親水性繊維の坪量が凸部２ａの厚み方向上方から厚み方向下方へ向かって次第に増加するとともに、凹部２ｂの厚み方向上方から厚み方向下方へ向かって次第に増加し、さらに、親水性繊維の坪量が凸部２ａの外周面２ｄから凸部２ａの厚み方向中央部分２ｅに向かって次第に増加していてもよい。  In the diaper 1, the basis weight of the hydrophilic fiber forming thesurface member 2 gradually increases from the upper part in the thickness direction of theconvex part 2 a toward the lower part in the thickness direction, and gradually from the upper part in the thickness direction of theconcave part 2 b to the lower part in the thickness direction. Further, the basis weight of the hydrophilic fiber may gradually increase from the outerperipheral surface 2d of theconvex portion 2a toward thecentral portion 2e in the thickness direction of theconvex portion 2a.

図５，６は、生理用ナプキン２０の部分破断斜視図と、図５の表面部材２４の斜視図とであり、図７，８は、図５のＣ−Ｃ線矢視断面図と、図５のＤ−Ｄ線矢視断面図とである。図５，６では、横方向を矢印Ｘで示し、縦方向を矢印Ｙで示す。なお、液透過性シート２１の内面とは、コア２３に対向する面をいい、シート２１の外面とは、コア２３に非対向の面をいう。  5 and 6 are a partially broken perspective view of thesanitary napkin 20 and a perspective view of thesurface member 24 of FIG. 5, and FIGS. 7 and 8 are cross-sectional views taken along the line CC of FIG. 5 is a cross-sectional view taken along line DD of FIG. 5 and 6, the horizontal direction is indicated by an arrow X, and the vertical direction is indicated by an arrow Y. The inner surface of the liquidpermeable sheet 21 refers to a surface that faces thecore 23, and the outer surface of thesheet 21 refers to a surface that does not face thecore 23.

ナプキン２０は、肌当接側に位置する液透過性シート２１と、肌非当接側に位置する液不透過性ベースシート２２と、それらシート２１，２２の間に介在する吸液性コア２３および液透過性表面部材２４とから構成されている。コア２３は、ベースシート２３と表面部材２４との内面に接合されている。表面部材２４は、液透過性シート２１の内面に固着されている。  Thenapkin 20 includes a liquid-permeable sheet 21 positioned on the skin contact side, a liquid-impermeable base sheet 22 positioned on the skin non-contact side, and a liquid-absorbent core 23 interposed between thesheets 21 and 22. And a liquidpermeable surface member 24. Thecore 23 is joined to the inner surfaces of thebase sheet 23 and thesurface member 24. Thesurface member 24 is fixed to the inner surface of the liquidpermeable sheet 21.

ナプキン２０は、横方向へ延びる両端縁部２５と縦方向へ延びる両側縁部２６とを有する。ナプキン２０では、液透過性シート２１とベースシート２２との端縁部２１ａ，２２ａがコア２３の端縁２３ａから縦方向外方へ延び、それら端縁部２１ａ，２２ａの互いに重なり合う部分が固着されている。ナプキン２０では、液透過性シート２１とベースシート２２との側縁部２１ｂ，２２ｂがコア２３の側縁２３ｂから横方向外方へ延び、それら側縁部２１ｂ，２２ｂの互いに重なり合う部分が固着されている。ベースシート２２の外面には、ナプキン２０をショーツの内側に貼着するための粘着剤（図示せず）が塗布されている。  Thenapkin 20 has both end edges 25 extending in the horizontal direction and both side edges 26 extending in the vertical direction. In thenapkin 20, theedge portions 21a and 22a of the liquidpermeable sheet 21 and thebase sheet 22 extend outward in the longitudinal direction from theedge 23a of the core 23, and the overlapping portions of theedge portions 21a and 22a are fixed. ing. In thenapkin 20, theside edge portions 21b and 22b of the liquidpermeable sheet 21 and thebase sheet 22 extend laterally outward from theside edge 23b of the core 23, and the overlapping portions of theside edge portions 21b and 22b are fixed. ing. An adhesive (not shown) for sticking thenapkin 20 to the inner side of the shorts is applied to the outer surface of thebase sheet 22.

表面部材２４は、多数の親水性繊維からなる二つの繊維集合物２７，２８が厚み方向へ重なり合う二層のもので、縦方向へ長い略矩形を呈する。表面部材２４は、コア２３から上方へ隆起して横方向へ延びる複数条の凸部２４ａと、凸部２４ａの間に位置して横方向へ延びる複数条の凹部２４ｂとを有する。凸部２４ａは、縦方向へ所与寸法離間して並んでいる。凸部２４ａと凹部２４ｂとには、液透過性シート２１の内面が密着している。  Thesurface member 24 is a two-layered structure in which two fiber aggregates 27 and 28 made of a large number of hydrophilic fibers are overlapped in the thickness direction, and has a substantially rectangular shape that is long in the vertical direction. Thesurface member 24 has a plurality ofconvex portions 24a that protrude upward from thecore 23 and extend in the lateral direction, and a plurality ofconcave portions 24b that are positioned between theconvex portions 24a and extend in the lateral direction. Theconvex portions 24a are arranged in the vertical direction with a given distance. The inner surface of the liquid-permeable sheet 21 is in close contact with theconvex portion 24a and theconcave portion 24b.

表面部材２４では、その厚み方向下方に位置する繊維集合物２８の坪量がその厚み方向上方に位置する繊維集合物２７のそれよりも大きく、繊維集合物２８の密度が繊維集合物２７のそれよりも高い。繊維集合物２７では、その坪量が２０〜２００ｇ／ｍ^２の範囲にあることが好ましく、その密度が０．０００４〜０．０４ｇ／ｃｍ^３の範囲にあることが好ましい。繊維集合物２８では、その坪量が１００〜２５０ｇ／ｍ^２の範囲にあることが好ましく、その密度が０．０１〜０．２５ｇ／ｃｍ^３の範囲にあることが好ましい。In thesurface member 24, the basis weight of thefiber assembly 28 positioned below the thickness direction is larger than that of thefiber assembly 27 positioned above the thickness direction, and the density of thefiber assembly 28 is that of thefiber assembly 27. Higher than. In thefiber aggregate 27, the basis weight is preferably in the range of²⁰ to 200 g / m² , and the density is preferably in the range of 0.0004 to 0.04 g / cm³ . Thefiber aggregate 28 preferably has a basis weight in the range of 100 to 250 g / m^{2 and} a density in the range of 0.01 to 0.25 g / cm³ .

表面部材２４では、コア２３から上方へ延びる繊維集合物２８の凸条２８ａが表面部材２４の内面の側からその厚み方向中央部分２４ｄにまで達している。表面部材２４では、繊維集合物２７よりも高密度の繊維集合物２８の凸条２８ａが芯を形成するので、凸部２４ａが凹部２４ｂに向かって倒伏し難い。  In thesurface member 24, theridges 28 a of thefiber aggregate 28 extending upward from the core 23 reach thecentral portion 24 d in the thickness direction from the inner surface side of thesurface member 24. In thesurface member 24, since the protrudingstrips 28a of thefiber assembly 28 having a higher density than thefiber assembly 27 form a core, the protrudingportion 24a is unlikely to fall down toward therecess 24b.

表面部材２４の凸部２４ａと凹部２４ｂとには、表面部材２４を厚み方向へ貫通する多数の開孔部２４ｃが形成されている。開孔部２４ｃは、凸部２４ａと凹部２４ｂとを横方向へ所与寸法離間して並んでいる。縦方向へ隣り合う凸部２４ａでは、開孔部２４ｃが縦方向へ連なることなく縦方向へ互い違いに並んでいる。表面部材２４では、隣り合う凸部２４ａにおいて開孔部２４ｃが縦方向へ連なることはなく、凸部２４ａが経血に対する障壁としての機能を失うことはない。  A large number ofapertures 24 c that penetrate thesurface member 24 in the thickness direction are formed in theconvex portions 24 a and theconcave portions 24 b of thesurface member 24. Theopening part 24c has theconvex part 24a and theconcave part 24b arranged side by side by a given dimension in the lateral direction. In theprotrusions 24a adjacent to each other in the vertical direction, theapertures 24c are alternately arranged in the vertical direction without being continuous in the vertical direction. In thesurface member 24, theopening 24c does not continue in the vertical direction in theadjacent protrusion 24a, and theprotrusion 24a does not lose its function as a barrier against menstrual blood.

液透過性シート２１の外面に排泄された経血は、シート２１を透過して表面部材２４の外面に達する。表面部材２４の外面に達した経血は、表面部材２４を透過可能かつ開孔部２４ｃを通過可能である。表面部材２４では、繊維集合物２８の坪量が繊維集合物２７のそれよりも大きく、繊維集合物２８の密度が繊維集合物２７のそれよりも高いので、表面部材２４に滲入した経血が毛細管現象によって繊維集合物２７から繊維集合物２８に向かって移動する。表面部材２４に滲入した経血は、それを透過してコア２３に達し、コア２３に吸収、保持される。  The menstrual blood excreted on the outer surface of the liquid-permeable sheet 21 passes through thesheet 21 and reaches the outer surface of thesurface member 24. The menstrual blood that has reached the outer surface of thesurface member 24 can pass through thesurface member 24 and pass through theopening 24c. In thesurface member 24, the basis weight of thefiber assembly 28 is larger than that of thefiber assembly 27, and the density of thefiber assembly 28 is higher than that of thefiber assembly 27. It moves from thefiber assembly 27 toward thefiber assembly 28 by capillary action. The menstrual blood that has permeated into thesurface member 24 passes through it and reaches the core 23, and is absorbed and held in thecore 23.

表面部材２４では、経血が表面部材２４に滲入する以前に、それが表面部材２４の外面を拡散したとしても、表面部材２４の凸部２４ａによって経血の縦方向への流動を防ぐことができる。また、表面部材２４では、経血が凹部２４ｂを横方向へ拡散したとしても、拡散する過程において経血が開孔部２４ｃに進入し、開孔部２４ｃを通ってコア２３に吸収、保持されるので、経血の横方向への流動を防止することができる。ナプキン２０では、表面部材２４の周縁の外側に経血が漏出することはなく、経血をコア２３に確実に吸収、保持させることができる。  In thesurface member 24, even if it diffuses on the outer surface of thesurface member 24 before menstrual blood permeates into thesurface member 24, theconvex portion 24 a of thesurface member 24 prevents the menstrual blood from flowing in the vertical direction. it can. In thesurface member 24, even if menstrual blood diffuses in therecess 24b in the lateral direction, menstrual blood enters theopening 24c in the diffusion process, and is absorbed and held in the core 23 through theopening 24c. Therefore, the lateral flow of menstrual blood can be prevented. In thenapkin 20, menstrual blood does not leak to the outside of the peripheral edge of thesurface member 24, and menstrual blood can be reliably absorbed and held by thecore 23.

表面部材２４では、凸部２４ａに経血が排泄されたとしても、経血が凸部２４ａに形成された開孔部２４ｃを通ってコア２３に達し、コア２３に吸収、保持されるので、経血の凸部２４ａにおける拡散を防止することができる。  In thesurface member 24, even if menstrual blood is excreted in theconvex portion 24a, the menstrual blood reaches the core 23 through theopening 24c formed in theconvex portion 24a, and is absorbed and held in thecore 23. It is possible to prevent diffusion of menstrual blood in theconvex portion 24a.

表面部材２４を形成する親水性繊維には、親水処理を施した熱可塑性合成樹脂繊維やパルプ繊維、再生繊維のいずれかまたはそれら繊維の混合物を使用することができる。熱可塑性合成樹脂繊維には、ポリオレフィン系、ポリエステル系、ポリアミド系の繊維を使用することができる。再生繊維には、レーヨンやアセテート等のセルロ−ス系繊維を使用することができる。表面部材２４では、親水性繊維からなる繊維集合物１３，２５，２６に高吸収性ポリマー粒子が混入されていてもよい。高吸収性ポリマー粒子としては、デンプン系、セルロース系、合成ポリマー系のものを使用することができる。  As the hydrophilic fibers forming thesurface member 24, any one of thermoplastic synthetic resin fibers, pulp fibers, regenerated fibers or a mixture of these fibers subjected to hydrophilic treatment can be used. As the thermoplastic synthetic resin fiber, polyolefin-based, polyester-based, or polyamide-based fiber can be used. Cellulose fibers such as rayon and acetate can be used as the recycled fibers. In thesurface member 24, superabsorbent polymer particles may be mixed in the fiber aggregates 13, 25, and 26 made of hydrophilic fibers. As the superabsorbent polymer particles, starch-based, cellulose-based or synthetic polymer-based particles can be used.

ベースシート３を形成する繊維不織布３ａ，３ｂには、疎水性繊維不織布や疎水性繊維不織布を重ね合わせた２層の不織布を使用することができる。また、ベースシート３には、液不透過性のプラスチックフィルムや疎水性繊維不織布に液不透過性のプラスチックフィルムを固着した複合シートを使用することができる。防漏カフ５には、疎水性繊維不織布を使用することができる。液透過性シート２１には、親水性繊維不織布、または、微細な多数の開孔を有するプラスチックフィルムを使用することができる。  As thefiber nonwoven fabrics 3a and 3b forming thebase sheet 3, a hydrophobic fiber nonwoven fabric or a two-layer nonwoven fabric in which a hydrophobic fiber nonwoven fabric is superimposed can be used. Thebase sheet 3 may be a liquid impermeable plastic film or a composite sheet in which a liquid impermeable plastic film is fixed to a hydrophobic fiber nonwoven fabric. A hydrophobic fiber nonwoven fabric can be used for the leak-proof cuff 5. For the liquid-permeable sheet 21, a hydrophilic fiber nonwoven fabric or a plastic film having a large number of fine holes can be used.

ベースシート３を形成する不織布３ａ，３ｂや防漏カフ５には、高い耐水性を有するメルトブローン法による繊維不織布を、高い強度を有しかつ柔軟性に富んだスパンボンド法による繊維不織布で挟んだ複合不織布を使用することもできる。  Thenonwoven fabrics 3a and 3b and the leak-proof cuff 5 forming thebase sheet 3 are sandwiched between fiber nonwoven fabrics by a melt-blown method having high water resistance and fiber nonwoven fabrics by a spunbond method having high strength and high flexibility. A composite nonwoven fabric can also be used.

不織布としては、スパンレース、ニードルパンチ、メルトブローン、サーマルボンド、スパンボンド、ケミカルボンド、エアースルー、の各製法により製造されたものを使用することができる。不織布の構成繊維としては、ポリオレフィン系、ポリエステル系、ポリアミド系、の各繊維、ポリエチレン／ポリプロピレン、または、ポリエチレン／ポリエステルからなる芯鞘型複合繊維または並列型複合繊維を使用することができる。  As a nonwoven fabric, what was manufactured by each manufacturing method of a spunlace, a needle punch, a melt blown, a thermal bond, a spun bond, a chemical bond, and an air through can be used. As a constituent fiber of the nonwoven fabric, polyolefin-based, polyester-based, polyamide-based fibers, polyethylene / polypropylene, or core-sheath type composite fibers or parallel type composite fibers made of polyethylene / polyester can be used.

コア４，２３は、フラッフパルプと高吸収性ポリマー粒子との混合物、または、フラッフパルプと高吸収性ポリマー粒子と熱可塑性合成樹脂繊維との混合物であり、所要の厚みに圧縮されている。それらコア４，２３は、その型崩れやポリマー粒子の脱落を防止するためにその全体がティッシュペーパーに被覆、接合されていることが好ましい。  Thecores 4 and 23 are a mixture of fluff pulp and superabsorbent polymer particles, or a mixture of fluff pulp, superabsorbent polymer particles and thermoplastic synthetic resin fibers, and are compressed to a required thickness. Thecores 4 and 23 are preferably entirely coated and bonded to a tissue paper in order to prevent the deformation of the cores and the dropping of the polymer particles.

表面部材２，２４の固着や液透過性シート２１の固着、コア４，２３の接合、防漏カフ５の固着、弾性部材の８，９，１２固着には、ホットメルト型接着剤、または、ヒートシールや超音波接合等の熱による溶着手段を使用することができる。  For fixing thesurface members 2 and 24, fixing the liquid-permeable sheet 21, bonding thecores 4 and 23, fixing the leak-proof cuff 5, and fixing theelastic members 8, 9, and 12; Heat welding means such as heat sealing and ultrasonic bonding can be used.

この発明は、開放型のおむつ１や生理用ナプキン２０の他に、前後胴周り域があらかじめ連結されたパンツ型のおむつやおむつカバーの内側に取り付けて使用する吸収性パッドにも実施することができる。  In addition to the open type diaper 1 and thesanitary napkin 20, the present invention can also be applied to an absorbent pad that is attached to the inside of a pant-type diaper or diaper cover in which the front and rear waist areas are connected in advance. it can.

おむつの部分破断斜視図。The partial fracture perspective view of a diaper.図１の表面部材の斜視図。The perspective view of the surface member of FIG.図１のＡ−Ａ線矢視断面図。FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.図１のＢ−Ｂ線矢視断面図。FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1.ナプキンの部分破断斜視図。The partially broken perspective view of a napkin.図５の表面部材の斜視図。The perspective view of the surface member of FIG.図５のＣ−Ｃ線矢視断面図。CC sectional view taken on the line of FIG.図５のＤ−Ｄ線矢視断面図。The DD sectional view taken on the line of FIG.

符号の説明Explanation of symbols

１ 使い捨ておむつ（使い捨ての体液処理物品）
２ 液透過性表面部材
２ａ 凸部
２ｂ 凹部
２ｃ 開孔部
２ｄ 外周面
２ｅ 厚み方向中央部分
３ 液不透過性ベースシート
４ 吸液性コア
７ 両端縁部
８ 両側縁部
１３ 繊維集合物
２０ 生理用ナプキン
２２ 液不透過性ベースシート
２３ 吸液性コア
２４ 液透過性表面部材
２４ａ 凸部
２４ｂ 凹部
２４ｃ 開孔部
２４ｄ 厚み方向中央部分
２５ 両端縁部
２６ 両側縁部
２７ 繊維集合物
２８ 繊維集合物1 disposable diaper (disposable body fluid treatment article)
2 Liquid-permeable surface member2a Convex part 2bConcave part 2cOpening part 2d Outerperipheral surface 2e Thicknessdirection center part 3 Liquidimpervious base sheet 4Absorbent core 7 Both endsedge part 8 Bothside edge part 13Fiber assembly 20 Forphysiological use Napkin 22 Liquid-impermeable base sheet 23Absorbent core 24 Liquid-permeable surface member24a Convex part 24bConcave part24c Opening part 24d Thickness directioncentral part 25 Both-endsedge part 26 Both-sides edge part 27Fiber aggregate 28 Fiber aggregate

Claims (6)

Translated fromJapanese

肌非当接側に位置して縦方向へ延びる両側縁部および横方向へ延びる両端縁部を画成する液不透過性ベースシートと、前記ベースシートの内面に取り付けられた吸液性コアと、肌当接側に位置して前記コアの少なくとも一部を覆う液透過性表面部材とから構成され、前記表面部材が、前記コアから上方へ隆起して前記横方向へ延びるとともに前記縦方向へ所与寸法離間して並ぶ複数条の凸部と、前記凸部の間を前記横方向へ延びる複数条の凹部とを有する使い捨ての体液処理物品において、
前記表面部材が、その厚み方向へ貫通して体液が通過可能な多数の開孔部を有し、前記開孔部が、前記縦方向と前記横方向とへ所与寸法離間して並んでいることを特徴とする前記物品。A liquid-impermeable base sheet that is positioned on the skin non-contact side and that defines both side edges extending in the vertical direction and both end edges extending in the horizontal direction; and a liquid-absorbent core attached to the inner surface of the base sheet; And a liquid-permeable surface member that is located on the skin contact side and covers at least a part of the core, and the surface member protrudes upward from the core and extends in the lateral direction and extends in the longitudinal direction. In a disposable bodily fluid treatment article having a plurality of protrusions arranged at a given distance apart and a plurality of recesses extending in the lateral direction between the protrusions,
The surface member has a large number of apertures through which body fluid can pass through in the thickness direction, and the apertures are arranged at a given distance in the vertical direction and the horizontal direction. The article described above. 前記開孔部が、前記凹部に形成されて前記横方向へ所与寸法離間して並んでいる請求項１記載の物品。  The article according to claim 1, wherein the apertures are formed in the recesses and are arranged at a given distance in the lateral direction. 前記開孔部が、前記凸部に形成されて前記横方向へ所与寸法離間して並び、前記縦方向へ隣り合う前記凸部では、前記開孔部が前記縦方向へ連なることなく該縦方向へ互い違いに並んでいる請求項１または請求項２に記載の物品。  The apertures are formed in the projections and are arranged at a given distance in the lateral direction, and in the projections adjacent in the longitudinal direction, the apertures are not continuous in the longitudinal direction. The article according to claim 1 or 2, wherein the article is staggered in a direction. 前記縦方向へ連なる前記開孔部の個数が５〜２５個、前記横方向へ連なる前記開孔部の個数が２〜１０個の範囲にあり、前記開孔部の面積が１５〜６００ｍｍ^２の範囲にある請求項１ないし請求項３いずれかに記載の物品。The number of the apertures connected in the vertical direction is in the range of 5 to 25, the number of the apertures connected in the horizontal direction is in the range of 2 to 10, and the area of the aperture is 15 to 600 mm² . The article according to any one of claims 1 to 3, which is in a range. 前記表面部材が、多数の親水性繊維と高吸収性ポリマー粒子とのうちの少なくとも前記親水性繊維からなる繊維集合物であり、前記親水性繊維の坪量が、前記凸部の厚み方向上方から厚み方向下方へ向かって次第に増加するとともに、前記凹部の厚み方向上方から厚み方向下方へ向かって次第に増加している請求項１ないし請求項４いずれかに記載の物品。  The surface member is a fiber assembly composed of at least the hydrophilic fiber among a number of hydrophilic fibers and superabsorbent polymer particles, and the basis weight of the hydrophilic fiber is from above in the thickness direction of the convex portion. The article according to any one of claims 1 to 4, wherein the article gradually increases downward in the thickness direction, and gradually increases from above in the thickness direction to below in the thickness direction. 前記親水性繊維の坪量が、前記凸部の外周面から前記凸部の厚み方向中央部分に向かって次第に増加している請求項５記載の物品。  The article according to claim 5, wherein the basis weight of the hydrophilic fiber gradually increases from the outer peripheral surface of the convex portion toward the central portion in the thickness direction of the convex portion.

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