JP5241457B2 - Disposable diapers - Google Patents

Disposable diapers Download PDF

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JP5241457B2
JP5241457B2 JP2008310089A JP2008310089A JP5241457B2 JP 5241457 B2 JP5241457 B2 JP 5241457B2 JP 2008310089 A JP2008310089 A JP 2008310089A JP 2008310089 A JP2008310089 A JP 2008310089A JP 5241457 B2 JP5241457 B2 JP 5241457B2
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wearer
elastic member
buttocks
diaper
disposable diaper
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JP2010131197A (en
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幹雄 鈴木
俊安 店網
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Kao Corp
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本発明は、使い捨ておむつに関し、詳しくはパンツ型及び展開型両用の使い捨ておむつに関する。   The present invention relates to a disposable diaper, and more particularly, to a disposable diaper for both a pants type and a deployment type.

従来、使い捨ておむつとして、長手方向一端部の両側部に一対のファスニングテープを有し、該ファスニングテープを長手方向他端部の外面に設けたランディングゾーンに止着して用いる使い捨ておむつ(以下、展開型おむつという)と、ウエスト開口部と一対のレッグ開口部とが予め形成されている使い捨ておむつ(以下、パンツ型おむつという)が広く知られている。   Conventionally, disposable diapers have a pair of fastening tapes on both sides at one end in the longitudinal direction, and are used by fastening the fastening tape to a landing zone provided on the outer surface of the other end in the longitudinal direction (hereinafter, developed) Disposable diapers (hereinafter referred to as pants-type diapers) in which a waist opening and a pair of leg openings are formed in advance are widely known.

展開型おむつは、寝た状態で着脱することができ、また、テープの止着位置をずらしてフィット性の調整が可能で、製造コストが安い等の利点がある。他方、パンツ型おむつは、下着であるパンツやショーツと同様に着脱でき、例えば、月齢が上がってきた乳幼児を四つん這いにして又は立たせて装着させることができ便利であるという利点がある。   The unfolded diaper can be attached and detached while lying down, and can be adjusted in fit by shifting the fixing position of the tape, and has advantages such as low manufacturing costs. On the other hand, the pants-type diaper is detachable in the same manner as underpants and shorts, which are underwear, and has an advantage that, for example, an infant whose age is rising can be worn on all fours or standing.

これに対し、展開型おむつと同様にもパンツおむつと同様にも使用でき、しかも腹側に配される部分の意図しない開放が生じにくく、更にサイズ調整の自由度が高い、成人用の使い捨ておむつが開発されている(特許文献1参照)。この使い捨ておむつは、一対のミシン目などの破断誘導線に挟まれた中央部分と破断誘導線を介して中央部分に連設された外方部を有し、外方部にファスニングテープが設けられている。このおむつは、破断誘導線の分離前は、通常のパンツおむつと同様な形状をしており、破断誘導線をやぶくと展開型おむつと同様に取り外すことができる。そして、テープで再接合することで、パンツ形状とすることができる。そのため、普通のパンツタイプのようにはけて上げ下げでき、ズボンを脱がなくても取り替えられ、さらに、ミシン目をやぶけば横になったままでも簡単に交換ができるものである。   On the other hand, disposable diapers for adults that can be used in the same way as unfolded diapers as well as underpants diapers, and are less likely to cause unintentional opening of the portion arranged on the ventral side, and have a high degree of freedom in size adjustment. Has been developed (see Patent Document 1). This disposable diaper has a central part sandwiched between break guide lines such as a pair of perforations and an outer part connected to the central part via the break guide line, and a fastening tape is provided on the outer part. ing. This diaper has the same shape as a normal pant diaper before separation of the breakage induction line, and can be removed in the same manner as the unfolded diaper when the breakage induction line is peeled off. And it can be set as a pants shape by rejoining with a tape. Therefore, it can be lifted and lowered like a normal pants type, can be replaced without taking off the pants, and can be easily replaced while lying down if the perforation is removed.

特開2006−204688号公報JP 2006-204688 A

本発明者の確認によれば、上記のように新開発のパンツ型及び展開型の両用おむつは、双利用性の高いものであるが、その活用の形態のために、股下あたりのフィット性ないし装着感と漏れ防止性とを両立するのが困難であることがわかってきた。特に、この使い捨ておむつは、その腹側部位を分離していないパンツ型の状態ではかせることも、分離開放した後にテープで止めて着用させることもできるため、着用者の肌に対するおむつ密着状態が異なることがあり、その両方の使用場面において、肌とおむつの隙間からの横モレなどに対する信頼性の高い漏れ防止性と良好なフィット性とを両立することは容易ではない。   According to the confirmation of the present inventor, the newly developed both-use pants-type and unfolded-type diapers are highly dual-use. It has been found that it is difficult to achieve both wearing comfort and leakage prevention. In particular, this disposable diaper can be used in a pants-type state in which the ventral part is not separated, or can be worn with a tape after being separated and released, so that the diaper adherence state to the wearer's skin is different. In both cases, it is not easy to achieve both a reliable leakage prevention property and a good fit with respect to the lateral leakage from the gap between the skin and the diaper.

本発明は、上記のパンツ型及び展開型の両用使い捨ておむつに特有の課題に鑑み、その両方の使用形態において液モレ防止性能に優れ、かつ、履き心地に優れたパンツ型及び展開型両用の使い捨ておむつを提供することを目的とするものである。   In view of the problems peculiar to the above-mentioned both pants-type and unfolded disposable diapers, the present invention is excellent in anti-moisture prevention performance in both usage forms, and is comfortable for both pants-type and unfolded-type disposable diapers. The purpose is to provide diapers.

本発明は、着用者の胴回りに沿わされる環状外装帯と、該外装帯の腹側部肌面側及び背側部肌面側に接合され股下に沿わされるよう垂設された、吸収性コアを具備する下帯部材とを有する使い捨ておむつであって、前記環状外装帯の腹側部には外装帯の上縁から下縁にまで延びる一対の破断誘導線があり、該環状外装帯は前記破断誘導線に沿って切断して前記下帯部材から切離し観音開きに開放可能であり、さらに前記破断誘導線の近傍で切り離される外装帯部分にその切断により引き出し可能なファスニングテープが収納されており、前記下帯部材は前記吸収性コアの非肌面側に該下帯部材の長手方向に延びる臀部第1弾性部材を有するパンツ型及び展開型両用の使い捨ておむつを提供することにより、上記目的を達成したものである。   The present invention is an absorptive, which is vertically installed so as to be joined to the crotch by being joined to the annular outer band along the wearer's waist and the ventral skin side and the back skin surface side of the outer band. A disposable diaper having a lower band member having a core, wherein the belly side portion of the annular outer band has a pair of break guide lines extending from the upper edge to the lower edge of the outer band, A fastening tape that can be cut along the breaking guide line and separated from the lower band member to be opened in a double-sided manner and that can be pulled out by the cutting is housed in an exterior band portion that is cut off in the vicinity of the breaking guide line. The lower belt member has the above-mentioned object by providing a disposable diaper for both pants and unfolded types having a buttocks first elastic member extending in the longitudinal direction of the lower belt member on the non-skin surface side of the absorbent core. Achieved.

本発明のパンツ型及び展開型両用のおむつは、通常、使用初期にはパンツ型おむつとして使用し、必要により、展開型おむつに切り替えて使用することができ、この新開発両用おむつに特有の課題を解決して、おむつと着用者の股間部との隙間を程良く少なくして、股間部等からの液モレ防止性能と良好な履き心地とを両立することができる。   The pants-type and unfolded diapers of the present invention are usually used as pants-type diapers in the initial stage of use, and can be used by switching to unfolded diapers if necessary. By solving this problem, the gap between the diaper and the crotch portion of the wearer can be moderately reduced to achieve both liquid leakage prevention performance from the crotch portion and the like and good comfort.

以下、本発明をその好ましい実施形態に基づき図面を参照しながら説明する。
図1は、本発明の好ましい一つの実施形態としての成人用のパンツ型・展開型の両用使い捨ておむつ10の初期形状での着用時の形状を示す、着用者腹側から見た斜視図である。おむつ10は、下帯部材2と環状外装帯3を備えている。環状外装帯3は、およそ半周ずつをなす腹側部位31及び背側部位32からなり、該両部位は着用者の左右両側部のそれぞれにおいて接合され、一対のサイドシール部33を形成している。このサイドシール部33におけるシートの接合方法は特に限定されるものではなく、ヒートシール、超音波シール等の任意の手段により接合することができる。そして、環状外装帯3は着用者の背丈方向上側において、環状のウエスト開口部Woをなし、ここに着用者の胴回りを通して着用される。下帯部材2は、環状外装帯3の腹側部位31の内面(肌当接面側の面)及び背側部位32の内面に、両端部がそれぞれ接合され、着用者の股下に沿わされるよう垂設される。これにより、レッグ開口部Loが形成され、全体としてパンツ型の形状をしている。
Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
FIG. 1 is a perspective view seen from the wearer's abdomen showing the shape of an adult pants-type and unfolded-type disposable diaper 10 for use in an initial shape as one preferred embodiment of the present invention. . The diaper 10 includes a lower band member 2 and an annular outer band 3. The annular outer band 3 is composed of an abdominal part 31 and a dorsal part 32 that form approximately a half circumference, and these parts are joined to each of the left and right sides of the wearer to form a pair of side seal parts 33. . The method for joining the sheets in the side seal portion 33 is not particularly limited, and the sheets can be joined by any means such as heat sealing or ultrasonic sealing. The annular outer band 3 forms an annular waist opening Wo on the upper side in the height direction of the wearer and is worn through the waist of the wearer. Both ends of the lower band member 2 are joined to the inner surface (surface on the skin contact surface side) of the abdomen side portion 31 of the annular outer band 3 and the inner surface of the back side portion 32, and are along the inseam of the wearer. It is suspended. Thereby, the leg opening Lo is formed, and has a pants shape as a whole.

腹側部位31及び背側部位32と下帯部材2との固定方法は、特に限定されるものではなく、下帯部材2と腹側部位31または背側部位32と重なっている部分の所定の領域で、接着剤等により固定したり、下帯部材2の周縁部のみにおいて、両者を接合したり、下帯部材2の幅方向の中央部のみ又は両端部のみで両者を接合することもできる。また、接着剤に代えて、ヒートシール、超音波シール等を用いることもできる。   The fixing method of the ventral region 31 and the dorsal region 32 and the lower band member 2 is not particularly limited, and a predetermined region of the portion overlapping the lower band member 2 and the ventral region 31 or the dorsal region 32 is not limited. Thus, they can be fixed with an adhesive or the like, they can be joined only at the peripheral edge of the lower belt member 2, or both can be joined only at the center or both ends of the width direction of the lower belt member 2. Further, instead of the adhesive, heat sealing, ultrasonic sealing, or the like can be used.

図2は、図1に示したおむつ10を破断誘導線34で破断して展開した状態を肌当接面側から見た状態を示す展開平面図であり、下帯部材2の一部は、重ねられた部材を少しずつ破断した状態で表示してある。下帯部材2は、液透過性の表面シート22、液不透過性の裏面シート23、及びこれら両シート22,23間に介在された吸収性コア24を具備してなる。下帯部材2は、平面視形状が長方形状であり、図1においては、おむつの長さ方向(Y方向)に長い形状を有している。吸収性コア24は、長方形状の裏面シート23及び長方形状の表面シート22により挟持・固定されている。吸収性コア24は、展開状態の平面視において図示したもののような、砂時計形状、すなわち長手方向(Y方向)の両側の幅の広い部分に対して、その中間に介在する括れた部分が穏やかに内方に張り出す逆円弧状となっている。吸収性コア24のおむつ幅方向(X方向)の中心である正中面切断線(着用時に着用者の臀裂に沿って延びる直線を示したものに相当する)Pは吸収性コア24の上記の括れた部分において、着用者の尿排泄対応領域Q、Q(男性の場合は領域Q、女性の場合は領域Q)から排便対応領域Qに沿うようにされる。このようにして、着用時には、吸収性コア24は着用者のおよそ下腹部から臀部にかけて股間を介して沿わされる。 FIG. 2 is a developed plan view showing a state in which the diaper 10 shown in FIG. 1 is broken and developed at the breaking guide line 34 as seen from the skin contact surface side, and a part of the lower belt member 2 is The overlapped members are displayed in a state where they are broken little by little. The lower belt member 2 includes a liquid-permeable top sheet 22, a liquid-impermeable back sheet 23, and an absorbent core 24 interposed between the two sheets 22 and 23. The lower belt member 2 has a rectangular shape in plan view, and has a long shape in the length direction (Y direction) of the diaper in FIG. The absorbent core 24 is sandwiched and fixed by a rectangular back sheet 23 and a rectangular top sheet 22. The absorbent core 24 has an hourglass shape like that illustrated in a plan view in a developed state, that is, a narrow portion interposed in the middle of the wide portion on both sides in the longitudinal direction (Y direction) is gentle. It has a reverse arc shape projecting inward. The midline cutting line (corresponding to a straight line extending along the wearer's crack when worn) P 1 is the center of the absorbent core 24 in the diaper width direction (X direction). The urinary excretion corresponding regions Q 1 and Q 2 (region Q 1 for men and region Q 2 for women) of the wearer are arranged along the defecation corresponding region Q 3 . Thus, at the time of wear, the absorptive core 24 is along the crotch from the wearer's lower abdomen to the buttocks.

破断して展開された環状外装帯3の開放主部(腹側部位31の前身頃開放可能部31aと後身頃となる背後部位32)は全体においてT字状であり、胴周り方向(X方向)を長手方向とした形状をなしている。図中矢印B1は前身頃開放可能部の占める領域を示し、矢印B2は後身頃の占める領域を表す。ただし、T字としたときの横棒(X方向)と縦棒(Y方向)との交わる部分の輪郭は、両側の外形において穏やかな逆円弧状、すなわち外装帯3の内方に入り込むような円弧をなすようにされている。そして、外装帯3の開放主部の長手方向、すなわち、おむつ幅方向(X方向)の中央部付近が、下帯部材2の一端部(背側後方部R側の端部)の外面(非肌当接面側の面)を覆っており、この覆う部分で環状外装帯3と下帯部材2とが着接されている。下帯部材2の他端部(腹側前方部F側の端部)の外面は、腹側部位31(前身頃開放可能部31a、前身頃非開放部31bによって覆われるが、この下帯部材2の他端部の外面を覆う部分の一部(前身頃非開放部31b)において下帯部材2の外面に固定されている。図中、矢印B3は前身頃非開放部31bの占める領域を表す。このようにして、環状外装帯3と下帯部材2とを着接して組み立てたおむつ10は、上記破断展開状態においてもT字形状であり、前記の環状外装帯3がなすT字形状の縦棒(Y方向)が下帯部材2によってさらに延びたようにされている。このようにして、本実施形態のおむつ10は全体において、背側後方部Rと腹側前方部Fとこの両部に介在された股下中間部Cとに区画され、着用状態では上記前方部Fと後方部Rとが連結され胴回り部Dを構成する(図1、図2参照)。なお、図2に示す符号で、特に言及しないものは、図1に示すもので同じ意味である(以下に説明する図面においても、それ以前の図面で説明した符号については、説明を省略することがある。)。   The open main part (the front part openable part 31a of the ventral part 31 and the rear part 32 serving as the rear part) of the annular exterior band 3 that is broken and expanded is T-shaped as a whole, and the trunk circumference direction (X direction) ) In the longitudinal direction. In the figure, an arrow B1 indicates an area occupied by the front body openable portion, and an arrow B2 indicates an area occupied by the rear body. However, the outline of the portion where the horizontal bar (X direction) and the vertical bar (Y direction) intersect when the T-shape is formed is a gentle reverse arc shape in the outer shape of both sides, that is, it enters the inside of the exterior band 3. It is designed to form an arc. The longitudinal direction of the open main portion of the outer band 3, that is, the vicinity of the central portion in the diaper width direction (X direction) is the outer surface (non-end of the back side rear portion R side) of the lower band member 2. The surface of the skin contact surface side) is covered, and the annular outer band 3 and the lower band member 2 are attached to the covered portion. The outer surface of the other end portion (end portion on the ventral front portion F side) of the lower strip member 2 is covered by the ventral portion 31 (the front body openable portion 31a and the front body non-open portion 31b). 2 is fixed to the outer surface of the lower belt member 2 in a part (front body non-opening portion 31b) covering the outer surface of the other end portion 2. In the drawing, an arrow B3 indicates a region occupied by the front body non-opening portion 31b. In this way, the diaper 10 assembled by attaching and attaching the annular outer band 3 and the lower band member 2 is also T-shaped even in the above-described broken and unfolded state, and the T-shaped formed by the annular outer band 3. The vertical bar (in the Y direction) is further extended by the lower belt member 2. Thus, the diaper 10 of the present embodiment as a whole has a back side rear portion R, a ventral side front portion F, and both of them. Is divided into an inseam intermediate part C interposed in the part, and in the worn state, the front part F and (See FIGS. 1 and 2) Reference numerals shown in FIG. 2 that are not particularly mentioned have the same meaning as shown in FIG. In the drawings to be described, the description of the reference numerals described in the previous drawings may be omitted.)

環状外装帯3の腹側部位31は、おむつ長さ方向(Y方向)に一対の破断可能な破断誘導線34を有し、これに挟まれた前身頃非開放部(中央部分)31bと前身頃開放部(外側方部分)31aとに区別される。本実施形態においては、この破断誘導線34が線状に形成されたミシン目で構成されており(図1参照)、それぞれ腹側部位31の上下端間に亘って延びている。破断誘導線34は、着用者の臍に対応する部位を挟んでその両側に股下方向に延び平行に設けられている。ここで平行とは実質的に平行であればよく、それぞれの線が多少蛇行していても、やや平行状態にずれがあってもよい。そして、このミシン目により形成された破断誘導線34に沿って着用者ないし介助者等の手で前身頃非開放部31b(破断線34b)と前身頃開放部31a(破断線34a)とに分離するように破断し、前身頃開放部縁部31aを開くことで破断線34bとを切り離し展開型のおむつ形状とすることができる。   The ventral region 31 of the annular outer band 3 has a pair of breakable guide lines 34 that can be broken in the diaper length direction (Y direction), and the front body non-opening portion (center portion) 31b and the front body sandwiched between them. It is distinguished from the opening part (outer side part) 31a. In the present embodiment, the break guide wire 34 is formed by perforations formed in a linear shape (see FIG. 1), and each extends across the upper and lower ends of the ventral region 31. The break guide wire 34 extends in the crotch direction on both sides of the part corresponding to the wearer's navel and is provided in parallel. Here, the term “parallel” may be substantially parallel, and each line may meander somewhat or there may be a slight shift in the parallel state. Then, the front body non-opening portion 31b (breaking line 34b) and the front body opening portion 31a (breaking line 34a) are separated by a wearer's or an assistant's hand along the breaking guide line 34 formed by the perforation. The rupture line 34b can be cut off by opening the front body opening part edge 31a so as to form a developed diaper shape.

股下部の下帯部材2には、長さ方向(Y方向)に伸縮性を有する臀部第1弾性部材21が配置され、吸収体ギャザーを形成している。本実施形態では、長さ方向に沿った4本の弾性部材が幅方向(X方向)にほぼ並列されて設置されており、着用時に、伸長状態で設置された臀部第1弾性部材21が収縮することにより、おむつの股下部が着用者の臀裂に合わせるように引き上げられ、おむつ10と着用者の股間とが密着することになる。   In the lower belt member 2 of the crotch part, a buttock first elastic member 21 having elasticity in the length direction (Y direction) is disposed to form an absorber gather. In this embodiment, the four elastic members along the length direction are installed in parallel in the width direction (X direction), and the first elastic member 21 of the buttocks that is installed in an expanded state contracts when worn. By doing so, the crotch part of a diaper is pulled up so that it may match a wearer's crack, and the diaper 10 and a wearer's crotch will closely_contact | adhere.

本実施形態では、臀部第1弾性部材21は、一対の破断誘導線34(図2では破断線34b)の延長線長さ方向に延長した2本の線よりも、幅方向内側の正中面切断線P側に配されている。このような位置にあることで、着用者股間部において、おむつの密着性を向上させ、排泄物の漏れ防止性能を向上させることができる。なお、破断誘導線が曲線状のものである場合には、上記破断誘導線の延長線とは、破断誘導線の始点と終点を結んだ直線の延長線を意味する。 In the present embodiment, the collar first elastic member 21 has a median plane cut inside in the width direction with respect to two lines extending in the length direction of the extension line of the pair of break guide lines 34 (break line 34b in FIG. 2). It is arranged in line P 1 side. By being in such a position, in a wearer's crotch part, the adhesiveness of a diaper can be improved and the leakage prevention performance of excrement can be improved. When the break guide line is curved, the extension line of the break guide line means a straight extension line connecting the start point and the end point of the break guide line.

本実施形態においては、環状外装帯3の背側部位32は、全体において台形の下底に長方形が組み合わされた火山の断面のような形状を逆さにした形状を有しており、この逆さ台の逆「八」の字状の部分がおもに着用者の臀部を覆い包囲するように着用される。そして、この背側部位32における上記逆さ台形の臀部対応部の両側方には、着用者股下部付近においては幅方向に伸縮性を有するよう、かつ着用者の背後から見て背丈方向に上開き、つまり逆「八」の字状になるように配設された左右一対の臀部第2弾性部材41a、41bを有している。この左右一対の臀部第2弾性部材41a、41bからなる臀部第2弾性部材41が着用時に着用者の臀部のでっぱりに合わせて適度な張力(伸縮応力)を発揮して、ヒップギャザーをなし、とりわけ弾性部材41の臀溝部分から背丈方向の上方にかけておしりの左右のやや下方で張り出したふくらみを両側からつつみ、軽く引き上げるようにして良好にフィットする。   In the present embodiment, the dorsal side portion 32 of the annular outer band 3 has a shape obtained by reversing the shape of a cross section of a volcano in which a rectangle is combined with the bottom of a trapezoid as a whole. The reverse “eight” -shaped part is mainly worn so as to cover and surround the wearer's buttocks. Then, on both sides of the inverted trapezoidal buttocks corresponding portion in the dorsal side portion 32, in the vicinity of the wearer's crotch portion, it opens in the height direction as viewed from the wearer's back so as to be stretchable in the width direction. That is, it has a pair of left and right collar second elastic members 41a and 41b arranged so as to have an inverted “eight” shape. The heel second elastic member 41 comprising the pair of left and right heel second elastic members 41a and 41b exerts appropriate tension (stretching stress) according to the wearer's buttocks at the time of wearing, making a hip gather, A good fit is achieved by pinching the bulges protruding from the left and right sides of the buttocks from the ridge groove portion of the elastic member 41 to the upper side in the height direction from both sides and pulling them lightly.

本実施形態において、環状外装帯3は、不織布などの2枚のシートから形成され(図では1枚のものとして示している。)、2枚のシート間に、胴回り方向に沿ってそれぞれウエスト弾性部材42および胴回り弾性部材43を伸長状態で固定している。これらの弾性部材42、43が着用状態で適度に胴回り方向に伸縮してウエストギャザー及び胴回りギャザーを形成しながら、着用者の胴回りにフィットして、おむつ10を着用者に密着させる。   In the present embodiment, the annular outer band 3 is formed from two sheets such as a nonwoven fabric (shown as one sheet in the figure), and is elastic between waists along the waistline direction between the two sheets. The member 42 and the waistline elastic member 43 are fixed in an extended state. While these elastic members 42 and 43 are appropriately expanded and contracted in the waistline direction to form waist gathers and waistline gathers, the elastic members 42 and 43 are fitted to the wearer's waistline to closely contact the diaper 10 with the wearer.

下帯部材2のおむつ幅方向(X方向)の両側縁部は着用時にレッグ開口部Loをなす長手方向(Y方向)に沿って伸びるレッグギャザー用弾性部材44が配されている。このレッグギャザー用弾性部材の張力(伸縮応力)により、着用者には足回りに良好なレッグギャザーを形成しながら、適度に締め付けて包み込むようにして、着用者の大腿部ないし足の付根のあたりにフィットする。   Leg gather elastic members 44 extending along the longitudinal direction (Y direction) forming the leg opening Lo when worn are disposed on both side edges in the diaper width direction (X direction) of the lower belt member 2. The tension of the elastic member for leg gathers (stretching stress) allows the wearer to form a good leg gather around the leg, and to wrap and tighten it appropriately so that the wearer's thigh or the root of the foot Fit around.

図3は、図2におけるA−A線模式断面図である。なお、この断面図は、伸展状態ではなく、自然状態のおむつにおいてレッグギャザーGが起立した状態の断面を模式的に示している。本実施形態では、図3に示されるように、下帯部材2は裏面シート23を備えており、吸収性コア24と裏面シート23の間に臀部第1弾性部材21を伸長可能に配されている。このため、臀部第1弾性部材21により形成される吸収体ギャザーと、環状外装帯3により設けられた臀部第2弾性部材41により形成されるヒップギャザーとは、おむつ10において、実質的に同一平面上に形成されることになり、両者の張力の相互作用により極めて良好なフィット感が得られる。そして、吸収体ギャザーとヒップギャザーはともに、弾性部材44により形成されるレッグギャザーとは異なる平面に形成されているため、レッグギャザーは脚回りに対するフィット性を実現する一方で、臀部第1弾性部材21と臀部第2弾性部材41の良好な伸縮性を阻害しづらくなされている。また、本発明においては、防漏カフを形成するように立体ギャザーを設けてもよいが、この場合も、吸収体ギャザー及びヒップギャザーと、立体ギャザーとは異なる平面上に形成されるため、お互いの機能を阻害しづらくなっている。
なお、臀部第1弾性部材21の配置位置は、吸収性コア24と裏面シート23の間に限定されるものではなく、例えば、裏面シート23の外側に弾性部材保持用シートを設けて、裏面シート23と弾性部材保持用シートの間に臀部第1弾性部材21を設けても良い。
3 is a schematic cross-sectional view taken along line AA in FIG. Note that this cross-sectional view schematically shows a cross-section in which the leg gathers G are upright in a diaper in a natural state, not in an extended state. In this embodiment, as shown in FIG. 3, the lower belt member 2 includes a back sheet 23, and the collar first elastic member 21 is disposed between the absorbent core 24 and the back sheet 23 so as to be extendable. Yes. For this reason, the absorber gathers formed by the buttocks first elastic member 21 and the hip gathers formed by the buttocks second elastic member 41 provided by the annular exterior band 3 are substantially flush with each other in the diaper 10. It is formed on the top, and a very good fit can be obtained by the interaction of both tensions. Since both the absorber gathers and the hip gathers are formed on a different plane from the leg gathers formed by the elastic members 44, the leg gathers achieve fit to the leg circumference, while the buttocks first elastic members 21 and the second elastic member 41 of the heel portion are not easily disturbed. In the present invention, a three-dimensional gather may be provided so as to form a leak-proof cuff. However, in this case as well, the absorber gathers and the hip gather and the three-dimensional gather are formed on different planes. It is hard to disturb the function of.
The arrangement position of the collar first elastic member 21 is not limited between the absorbent core 24 and the back sheet 23. For example, an elastic member holding sheet is provided outside the back sheet 23, and the back sheet The collar first elastic member 21 may be provided between the elastic member holding sheet 23 and the elastic member holding sheet.

図4は、図1のおむつの着用者左側のミシン目の破断誘導線34を破断した状態を示す斜視図である。本実施形態のおむつ10においては、環状外装帯3の破断誘導線近傍で、腹側部位31の前身頃開放可能部31aの内側(肌面側)に固定されたファスニングテープ5が設けられている。このファスニングテープ5は、基材シート5aのさらに肌面側に面状ファスナー5bが取り付けられており、破断誘導線34の破断により分離開放した開放可能部31aから上記面状ファスナー5bのある耳Mの部分を引き出すことができる。ファスニングテープ5の基材シート5aは、例えば、不織布や不織布と樹脂フィルムの積層体等から構成することができる。面状ファスナー(オス部材)は、鉤状ないしキノコ状の微小突起を係着面5iに密集して設けた構造のものが挙げられる。具体的には、メス部材に対して着脱自在に止着可能である通常の機械的面ファスナーを用いることができる。面状ファスナー5bを係着させる相手側部材は、通常の不織布でよく、例えばループ状ないし捲縮した繊維面を有する布材等を用いることができる。したがって、おむつの不織布を用いた任意の面に通常係着可能であり、また特に係着に適した素材を別途適用してランディング部としてもよい。本実施形態においては、腹側部位31の前身頃非開放部31bの非肌面が係着性が良好のランディング部となる。なお、図1に示すような破断誘導線34の破断前のファスニングテープ5は、その係着面5iが基材シート5aの内面側表面に接着固定された機械的面ファスナーのメス部材に仮着されて、折りたたまれた状態で収納されている。   FIG. 4 is a perspective view showing a state in which the break guide line 34 on the left side of the wearer of the diaper in FIG. 1 is broken. In the diaper 10 of the present embodiment, a fastening tape 5 fixed to the inner side (skin surface side) of the front body openable portion 31a of the abdominal part 31 is provided in the vicinity of the breaking guide line of the annular outer band 3. . The fastening tape 5 has a planar fastener 5b attached to the skin surface side of the base sheet 5a. The fastening tape 5 has an ear M with the planar fastener 5b from an openable portion 31a which is separated and opened by breaking of the breaking guide line 34. The part of can be pulled out. The base material sheet 5a of the fastening tape 5 can be comprised from a nonwoven fabric, the laminated body of a nonwoven fabric, and a resin film etc., for example. Examples of the surface fastener (male member) include a structure in which ridge-shaped or mushroom-shaped minute protrusions are provided densely on the engaging surface 5i. Specifically, a normal mechanical hook-and-loop fastener that can be detachably fastened to the female member can be used. The mating member to which the surface fastener 5b is engaged may be a normal nonwoven fabric, and for example, a cloth material having a looped or crimped fiber surface may be used. Therefore, it can usually be attached to an arbitrary surface using a nonwoven fabric of a diaper, and a material particularly suitable for attachment may be separately applied to form a landing portion. In the present embodiment, the non-skin surface of the front body non-opening portion 31b of the ventral region 31 is a landing portion with good engagement. The fastening tape 5 before breaking the breaking guide wire 34 as shown in FIG. 1 is temporarily attached to a female member of a mechanical hook-and-loop fastener whose engagement surface 5i is bonded and fixed to the inner surface of the base sheet 5a. And is stored in a folded state.

本実施形態においてはミシン目などの破断誘導線34は、下帯部材2の幅方向両側部に、外方部となる前身頃開放可能部31aと重なる部分2cを形成する観点から、下帯部材2の幅方向両側縁2sの位置より内側に形成されている。このように下帯部材2に前身頃開放可能部31aと重なる部分2cを形成することで、ファスニングテープ5の耳Mを下帯部材2と重ねて配置でき、それにより、ファスニングテープ5が着用者に接触して不快感や違和感を与えることを防止できる。また、破断誘導線34の下に剛性が比較的高い下帯部材2が存在することによって、破断誘導線34の破断操作を容易に行うことができる。   In the present embodiment, the break guide wires 34 such as perforations are formed on the both sides of the lower band member 2 in the width direction from the viewpoint of forming portions 2c that overlap the front body openable part 31a that is the outer part. 2 is formed on the inner side of the position of both side edges 2s in the width direction. Thus, by forming the part 2c which overlaps with the front body openable part 31a on the lower belt member 2, the ear M of the fastening tape 5 can be placed on the lower belt member 2 so that the fastening tape 5 is worn by the wearer. It is possible to prevent the user from feeling uncomfortable or uncomfortable by touching. Further, since the lower belt member 2 having relatively high rigidity exists under the breakage guide line 34, the breakage operation of the break guide line 34 can be easily performed.

本実施形態においては、破断誘導線34が、おむつ10を着用者の臍に対応する部位を挟んでその両側に股下方向に延び、略平行に設けられている。このとき、略平行に設けられている破断誘導線34は、着用時の形状としては着用者の体形に応じて腹側部位31の上方から下方に向かうにつれて、着用者の正中面に対応する切断線(おむつ縦方向中央線)に近づくように若干傾斜させて形成された、つまり若干逆「八」の字状になることもある。本発明におけるミシン目34は、傾斜させるか否かを問わずに、直線状のものであっても、円弧状やサインカーブ状等の曲線状のものであってもよい。   In the present embodiment, the breaking guide wire 34 extends in the crotch direction on both sides of the diaper 10 across a portion corresponding to the wearer's navel, and is provided substantially in parallel. At this time, the break guide line 34 provided substantially in parallel is a cut corresponding to the wearer's median surface as it goes from the upper side to the lower side of the abdominal side portion 31 according to the wearer's body shape as the shape at the time of wearing. It may be formed to be slightly inclined so as to approach the line (diaper vertical center line), that is, it may have a slightly inverted “eight” shape. The perforation 34 in the present invention may be a straight line or a curved line such as an arc or a sine curve regardless of whether the perforation 34 is inclined or not.

破断誘導線34をなすミシン目は、おむつ製造中及びおむつ装着中に破れない強度を維持しながら、使用場面において比較的容易に破断することが好ましい。このため、腹側部位31のミシン目の上方端部及び下方端部は、腹側部位31の上下の端縁からわずかに距離dを介して離れていることが好ましい。図5は、腹側部位31の上端縁を含む位置のミシン目からなる破断誘導線34の拡大平面図である。腹側部位31の上下の端縁それぞれから、各端縁に最も近い切れ目までの距離dが1.5mm以上であることが好ましい。他方、ミシン目の切れ目の長さLaとし、ミシン目の切れ目間の長さLbとすると、その比率〔La/Lb〕は、適当な破断強度を確保する観点から、2〜8の範囲内であることが好ましく、3〜7の範囲内であることがより好ましい。数値的に言えばLaは2〜10mm、Lbは1〜5mmの範囲内であることが好ましい。また、必要に応じて、破断誘導線の破断開始部に起点となる凹欠部や掴み代を設けることもできる。なお、図1および4においては、ミシン目の大きさ及び縁部の距離dを図面上の視認性を考慮し、やや誇張して示している。   It is preferable that the perforation forming the breaking guide line 34 is relatively easily broken in the scene of use while maintaining a strength that does not break during diaper manufacture and during diaper mounting. For this reason, it is preferable that the upper end portion and the lower end portion of the perforation of the ventral region 31 are slightly separated from the upper and lower end edges of the ventral region 31 by a distance d. FIG. 5 is an enlarged plan view of the breakage guide line 34 composed of a perforation at a position including the upper end edge of the ventral region 31. The distance d from each of the upper and lower end edges of the ventral region 31 to the cut closest to each end edge is preferably 1.5 mm or more. On the other hand, if the perforation length is La and the perforation length is Lb, the ratio [La / Lb] is within the range of 2 to 8 from the viewpoint of securing an appropriate breaking strength. It is preferable that it is within the range of 3-7. Speaking numerically, it is preferable that La is in the range of 2 to 10 mm and Lb is in the range of 1 to 5 mm. Further, if necessary, a notch portion or a grip allowance as a starting point can be provided at the break start portion of the break guide wire. In FIGS. 1 and 4, the size of the perforation and the distance d of the edge are shown in a slightly exaggerated manner in consideration of the visibility on the drawings.

本実施形態では、図2の展開平面図に示されるように、4本の全ての臀部第1弾性部材21が、着用時に正中面切断線Pで示される着用者の臀裂に沿って伸びるように、下帯部材2の幅方向中央部に存在し、全体において線状になっている。このように、臀部第1弾性部材21を全体において線状とすることで着用者の排尿部付近に下帯部材をより近づけることができ、吸収体に尿が素早く吸収されるため、排尿した時の漏れを防止することができる。ここで幅方向中央の範囲とは特に限定されず、正中面切断線Pから幅方向(X方向)に臀部第1弾性部材の作用が範囲として機能的に定められればよい。 In the present embodiment, as shown in developed plan view in FIG. 2, all the hip first elastic member 21 of the four is, extends along the gluteal cleft of the wearer indicated by the median plane cutting line P 1 when worn Thus, it exists in the width direction center part of the lower belt member 2, and is linear in the whole. Thus, since the lower belt member can be brought closer to the wearer's urine area by making the first buttocks elastic member 21 linear as a whole, and the urine is quickly absorbed by the absorber, Leakage can be prevented. Here it is not particularly limited, and the center in the width direction of the range, the effect of the buttocks first elastic member from the median plane cutting line P 1 in the width direction (X direction) only to be defined functionally as a range.

図6は、本発明の別の好ましい実施形態の使い捨ておむつ20を示す展開平面図である。この臀部第1弾性部材21は、着用者の正中面切断線Pの位置を挟んで、幅方向の両サイド部に2本ずつ離間して一対の平行線状となっている。このように、臀部第1弾性部材21を離間して一対の平行線状とすることで着用者の股間部付近に下帯部材をより近づけることができ、股間部の隙間が小さくなるために、排尿した時の股間部からの漏れを防止することができる。 FIG. 6 is an exploded plan view showing a disposable diaper 20 according to another preferred embodiment of the present invention. The hip first elastic member 21, across the position of the median plane cutting line P 1 of the wearer, and has a pair of parallel lines spaced two by two on both side portions in the width direction. Thus, by separating the buttocks first elastic member 21 into a pair of parallel lines, it is possible to bring the lower belt member closer to the wearer's crotch part, and the gap between the crotch part becomes smaller. Leakage from the crotch when urinating can be prevented.

図7は、図1のおむつを装着した状態における各弾性部材の伸縮性をモデル化して説明するための着用者背側から見た概略斜視図である。
図7に示されるように、臀部第1弾性部材(臀裂フィット性弾性部材)21の収縮により、臀裂線P方向で上方に向かう張力fが働き引っ張ることで、おむつ10と着用者6の股間部との隙間が少なくなる。これにより、臀部第1弾性部材がなかった従来のものに対して、この部分の隙間からの排泄物の液漏れを防止する性能と適切にフィットすることによる着用時の安心感が格段に向上する。しかも本実施形態のおむつにおいては、図示されるように、臀部第2弾性部材(臀溝フィット性弾性部材)41が臀溝の部分から左右に延び、おしりの両わきの上の方まで包み込みながら支えるように配設されたため、とくにおしりのやや下の方で左右に膨らみある部分を軽く持ち上げるようにして、おむつの背側部位がしっかりと余計な隙間をあけずにフィットする。そして、さらに、この臀部第2弾性部材41が臀溝線Pに沿って左右に延び、幅方向外側向け張力f2aおよびf2bが働き両側に開くように引っ張ることで、着用者が歩いたり寝返りを打ったときに、臀裂に臀部第1弾性部材21入り込みすぎて履き心地が悪くなってしまうことを効果的に防ぐことができる。すなわち、臀部第1弾性部材21の張力fと臀部第2弾性部材41の張力f2a、f2bとが相互に作用して、おむつの下方全体の形状が着用者の臀部の凹凸形状と好適にフィットするようになり、しかもおしりの割れ目部分に弾性部材が食い込むことはなく、モレ防止性能と長時間着用するときの履き心地の良さとを両立できる。
FIG. 7 is a schematic perspective view seen from the wearer's back for modeling and explaining the stretchability of each elastic member in a state where the diaper of FIG. 1 is worn.
As shown in FIG. 7, the diaper 10 and the wearer are pulled by the tension f 1 that works upward in the direction of the crack line P 1 due to the contraction of the buttocks first elastic member (crack-fit elastic member) 21. The gap with the crotch part 6 is reduced. Thereby, with respect to the conventional one that does not have the buttocks first elastic member, the performance of preventing the liquid leakage of excrement from the gap of this part and the sense of security at the time of wearing by appropriately fitting are significantly improved. . Moreover, in the diaper of the present embodiment, as shown in the figure, the heel second elastic member (groove fit elastic member) 41 extends from the grooving portion to the left and right, and wraps up to the upper side of the buttocks. Because it is arranged so as to support it, the back part of the diaper fits firmly without leaving an extra gap, especially by slightly lifting the part that swells to the left and right slightly below the buttocks. And further, by pulling to the buttocks second elastic member 41 extends right and left along the Shirimizosen P 2, open on both sides working width direction outside for tension f 2a and f 2b, walking by the wearer When turning over, it is possible to effectively prevent the heel part first elastic member 21 from entering the crack too much and causing the comfort to deteriorate. That is, the tension f 1 of the buttocks first elastic member 21 and the tensions f 2a and f 2b of the buttocks second elastic member 41 interact with each other so that the overall shape of the lower part of the diaper is suitable for the uneven shape of the wearer's buttocks. The elastic member does not bite into the crack part of the buttocks, and it is possible to achieve both anti-moisture performance and good comfort when worn for a long time.

本実施形態では、上述のように環状外装帯3の背側部位32は、着用者の臀部を覆う股下にかけて十分幅広にされ、その背側部位32の両側方には着用者の背後から見て側面方向に上開き、つまり逆「八」の字状になるように配置された左右一対の臀部第2弾性部材41a、41bを有する。また、図7において、上述のように臀部第1弾性部材21の収縮によって働く力の方向を矢印fで示し、臀部第2弾性部材41a、41bの収縮によって働く力の方向を矢印f2a、f2bでそれぞれ示してある。力fは臀裂線Pに沿った方向に作用し、f2aおよびf2bは臀溝線Pに沿った方向に作用する。f2aとf2bは、臀部第2弾性部材41を設置するときの伸長率を等しくすることで等しくなる。力f、f2a、およびf2bは、吸収体ギャザー及びヒップギャザーを以下に示す伸長率に設定することで、バランスよく組み合わされ、上述した程よい装着感を生み出すフィット性を発揮することができる。 In the present embodiment, as described above, the dorsal side portion 32 of the annular outer band 3 is sufficiently wide over the crotch that covers the wearer's buttocks, and the dorsal side portion 32 is seen on both sides from the back of the wearer. It has a pair of left and right collar second elastic members 41a and 41b arranged so as to open upward in the lateral direction, that is, in an inverted “eight” shape. In FIG. 7, the direction of the force acting by the contraction of the buttocks first elastic member 21 is indicated by an arrow f 1 as described above, and the direction of the force acting by the contraction of the buttocks second elastic members 41a and 41b is indicated by an arrow f 2a . Indicated by f 2b respectively. The force f 1 acts in the direction along the fissure line P 1 , and f 2a and f 2b act in the direction along the groin line P 2 . f 2a and f 2b are equalized by equalizing the elongation ratio when the flange second elastic member 41 is installed. The forces f 1 , f 2a , and f 2b can be combined in a well-balanced manner by setting the absorber gathers and hip gathers to the following elongation ratios, and can exhibit the fit that produces the above-mentioned moderate wearing feeling. .

また、臀部第1弾性部材21により形成される吸収体ギャザーの伸長率(Eb)は、20〜200%であることが好ましく、30〜100%がさらに好ましい。吸収体ギャザーの伸長率を上げる方法としては、弾性部材の繊度、弾性部材の本数、弾性部材の伸長率の向上などの手段を用いることができる。また、臀部第2弾性部材41により形成されるヒップギャザーの伸長率は30〜300%であることが好ましく、50〜100%がさらに好ましい。ここでいう、吸収体ギャザー、及びヒップギャザーの伸長率(Eb)とは、各伸縮部における自然に収縮した状態のある長さを(A)とし、ギャザーを伸び止まりするまで引き伸ばした時の長さを(B)としたとき、((B)−(A))/(A)で算出される百分率(%)と定義する。   Moreover, it is preferable that the elongation rate (Eb) of the absorber gathers formed with the collar part 1st elastic member 21 is 20-200%, and 30-100% is further more preferable. As a method for increasing the elongation rate of the absorber gathers, means such as the fineness of the elastic member, the number of elastic members, and the expansion rate of the elastic member can be used. Moreover, it is preferable that the elongation rate of the hip gathers formed of the buttocks second elastic member 41 is 30 to 300%, and more preferably 50 to 100%. The stretch rate (Eb) of the absorber gather and the hip gather here is the length when the stretched part is stretched until it stops stretching (A), where the stretched part has a naturally contracted length (A). When the thickness is (B), it is defined as a percentage (%) calculated by ((B)-(A)) / (A).

上記各実施形態のおむつは、使用開始時にパンツ型の形態のまま着脱することができるため、自立意識の高い起立状態で着脱できる着用者に対して、自分でパンツを穿くというニーズに応えることができる。そのため、介助が必要でありながら自立する訓練も必要となる高齢者や身体障害者のリハビリ用として適している。そして、2回目以降の着脱においては必要により、破断誘導線34を破断し取り出したファスナーテープで再接合することにより、展開型おむつと同様にして装着し、使用することもできるため、横になったままでも交換が簡単にでき、介助者が軽便におむつ交換をすることができる。   Since the diaper of each of the above embodiments can be attached and detached in the form of a pants at the start of use, the wearer who can attach and detach in a standing state with a high degree of independence can meet the need to wear pants by himself. it can. Therefore, it is suitable for rehabilitation of elderly people and persons with physical disabilities who need assistance and need independent training. In the second and subsequent detachments, if necessary, the breakage guide wire 34 can be attached and used in the same manner as the unfolded diaper by rejoining with the fastener tape that has been broken and taken out. It can be changed easily even if it is left, and the assistant can change diapers easily.

本発明の使い捨ておむつの各構成材料としては、通常用いられている各種の材料を特に制限なく用いることができる。例えば、肌に接触する部位に使用するシート材は、肌触りの良い材料、不織布や布等であることが好ましい。吸収性コアとしては、例えば、解繊パルプや捲縮アセテート繊維等の繊維からなる繊維集合体や、繊維集合体に吸水性ポリマーを保持させてなるものが好ましい。上記の各弾性部材の材料としては、吸収性物品に用いられる通常の弾性材料を用いることができ、例えば素材としては、スチレン−ブタジエン、ブタジエン、イソプレン、ネオプレン等の合成ゴム、天然ゴム、EVA、伸縮性ポリオレフィン、ポリウレタン等を挙げることができ、形態としては、断面が矩形、正方形、円形、多角形状等の糸状ないし紐状(平ゴム等)のもの、或いはマルチフィラメントタイプの糸状のもの等を用いることができる。機械的ファスナーのオス部材及びメス部材としては、公知の機械的ファスナー、例えば「マジックテープ(登録商標)」(クラレ社製)、「クイックロン(登録商標)」(YKK社製)、「マジクロス(登録商標)」(カネボウベルタッチ社製)等におけるオス部材及びメス部材を用いることができる。機械的面ファスナーのメス部材としては、これに直接係合可能な材料、例えば係合性に富む不織布を用いることもできる。   As each constituent material of the disposable diaper of this invention, the various materials normally used can be especially used without a restriction | limiting. For example, it is preferable that the sheet material used for the part in contact with the skin is a material having good touch, a nonwoven fabric, a cloth, or the like. As the absorbent core, for example, a fiber aggregate made of fibers such as defibrated pulp and crimped acetate fiber, or a core obtained by holding a water-absorbing polymer in the fiber aggregate is preferable. As the material of each elastic member, a normal elastic material used for an absorbent article can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, or neoprene, natural rubber, EVA, Examples include elastic polyolefin, polyurethane, etc. The shape of the cross-section is rectangular, square, circular, polygonal or other thread-like or string-like (flat rubber etc.), or multifilament type thread-like Can be used. As a male member and a female member of a mechanical fastener, known mechanical fasteners such as “Magic Tape (registered trademark)” (manufactured by Kuraray), “Quicklon (registered trademark)” (manufactured by YKK), “Majikurosu ( (Registered trademark) "(manufactured by Kanebo Bell Touch Co., Ltd.) and the like can be used. As the female member of the mechanical hook-and-loop fastener, a material that can be directly engaged with the female member, for example, a non-woven fabric rich in engagement can be used.

本発明の使い捨ておむつは、上述した実施形態に制限されず、本発明の趣旨を逸脱しない範囲で種々変更が可能である。
例えば、機械的面ファスナーに代えて、粘着剤を塗工して形成した粘着部を設けることもできる。また、破断誘導線としては、切り取り線としての効果があれば特に制限なく用いることができる。例えば、熱シール、超音波シールなどにより誘導線に沿って破断強度の強弱が形成されるのであれば孔の有無は問わない。また、破綻誘導線34の近傍に配される部分に着色領域を設け、破断誘導線34の破断作業の際の破断誘導線34の視認を容易しにすることもできる。
本発明の使い捨ておむつは、成人用に適しているが、幼児用であっても良い。
The disposable diaper of this invention is not restrict | limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, instead of a mechanical hook-and-loop fastener, an adhesive part formed by applying an adhesive can be provided. Moreover, as a break guide line, if there is an effect as a cut line, it can be used without particular limitation. For example, as long as the strength of the breaking strength is formed along the guide wire by heat sealing, ultrasonic sealing, etc., the presence or absence of holes does not matter. In addition, a colored region may be provided in a portion arranged in the vicinity of the failure induction line 34 so that the breakage induction line 34 can be easily viewed when the breakage induction line 34 is broken.
The disposable diaper of the present invention is suitable for adults, but may be for infants.

以下、本発明を実施例にさらに詳細に説明するが、本発明はこれに限定されるものではない。   EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to this.

[実施例1]
図1〜3に示す形態の使い捨ておむつ(複数本からなる臀部第1弾性部材の、吸収性コア幅方向における両外側に位置するものと、臀部第2弾性部材の同方向内側端が重ならないようになっている)を製造した。おむつ幅方向の中央部に配設された臀部第1弾性部材21により形成された吸収体ギャザーの伸長率は50%であり、また、臀部第2弾性部材41により形成されたヒップギャザーの伸長率は70%であった。
[Example 1]
1-3 disposable diapers (a plurality of buttocks first elastic members located on both outer sides in the absorbent core width direction and the inner ends in the same direction of the buttocks second elastic members are not overlapped) Manufactured). The stretch rate of the absorber gathers formed by the heel part first elastic member 21 disposed in the central part of the diaper width direction is 50%, and the stretch rate of the hip gathers formed by the heel part second elastic member 41 Was 70%.

[実施例2]
臀部第1弾性部材21を図6に示すようにサイド部に配設した以外は、実施例1と同様にして使い捨ておむつを製造した。
[Example 2]
A disposable diaper was manufactured in the same manner as in Example 1 except that the collar first elastic member 21 was disposed on the side portion as shown in FIG.

[実施例3]
臀部第2弾性部材を設けなかった以外は、実施例1と同様にして、使い捨ておむつを製造した。
[Example 3]
A disposable diaper was manufactured in the same manner as in Example 1 except that the buttocks second elastic member was not provided.

[比較例1]
臀部第1弾性部材を設けなかった以外は、実施例1と同様にして、使い捨ておむつを製造した。
[Comparative Example 1]
A disposable diaper was manufactured in the same manner as in Example 1 except that the buttocks first elastic member was not provided.

[股間部フィット状態評価]
図8の模式的な正面図による説明図で示すように、モデル人形61に、実施例1〜3および比較例1のおむつであって、パンツ形状の使い捨ておむつ62をはかせ、股間窪部から、垂直方向のおむつ外装帯表面までの距離Lを測定した。各測定に退いて、おむつ62の上端63は、人形の同一の位置となるようにした。結果を表1に示す。
[Evaluation of crotch fit]
As shown in the schematic front view of FIG. 8, the model doll 61 is a diaper of Examples 1 to 3 and Comparative Example 1, and a pants-shaped disposable diaper 62 is placed on the model doll 61. The distance L to the surface of the diaper outer band in the vertical direction was measured. Retreating to each measurement, the upper end 63 of the diaper 62 was set at the same position of the doll. The results are shown in Table 1.

[装着感評価]
被験者に、実施例1〜3および比較例1のおむつをパンツ形状で装着してもらい、その履き心地を評価した。臀裂部、または股間部に吸収体ギャザーによる食い込みが無いか、あっても極めて小さく、装着感が良かったものを「○」、臀裂部または、股間部に吸収体ギャザーによる食い込みが少し有り、やや装着感が悪かったものを「△」、臀裂部または、股間部に吸収体ギャザーによる食い込みが有り、装着感が悪かったものを「×」により評価した。
[Evaluation of wearing feeling]
Subjects were asked to wear the diapers of Examples 1 to 3 and Comparative Example 1 in the form of pants, and the comfort was evaluated. There is no bite by the absorber gathers in the ruptured part or crotch part, even if it is very small and there is a good fit, there is little bite by the absorber gathers in the cracked part or crotch part The case where the feeling of wearing was slightly bad was evaluated by “△”, and the case where there was biting by the absorber gathers in the cracked part or the crotch part and the feeling of wearing was evaluated by “x”.

[液漏れ防止性評価]
排尿ポイント65を設けたモデル人形66に、パンツ形状の実施例1〜3および比較例1の使い捨ておむつ67をはかせ、モデル人形66を傾斜角度30度に傾けた。図9は、このときの状態をまた下側から見た説明図である。モデル人形66に設けられた排泄ポイント65から、生理食塩水を、排泄量50g/回、排泄速度5g/sで排泄させた。この排出を5分間隔で、繰り返した後、漏れるまでの総排泄量から漏れた量を差し引くことにより、液吸収量を測定した。なお、試験は25℃で行った。
結果を表2に示す。なお、液吸収量の単位はgである。
[Liquid leakage prevention evaluation]
The model doll 66 provided with the urination point 65 was worn with the disposable diapers 67 of the pants-shaped Examples 1 to 3 and Comparative Example 1, and the model doll 66 was inclined at an inclination angle of 30 degrees. FIG. 9 is an explanatory view of the state at this time as viewed from the lower side. From the excretion point 65 provided in the model doll 66, physiological saline was excreted at an excretion amount of 50 g / time and an excretion rate of 5 g / s. After this discharge was repeated at intervals of 5 minutes, the liquid absorption amount was measured by subtracting the leaked amount from the total excretion amount until leaking. The test was conducted at 25 ° C.
The results are shown in Table 2. The unit of liquid absorption is g.

Figure 0005241457
Figure 0005241457

Figure 0005241457
Figure 0005241457

表1および2から示されるように、比較例1のおむつでは、おむつとモデル股間との距離(L)が52mmと長く、液漏れ防止性評価試験において、吸収量が300gと少なく、図9において矢印68方向に液の横モレが生じ、液漏れ防止性が十分ではなかった。
これに対して、臀部第1弾性部材を設けた実施例1〜3のおむつでは、おむつとモデル股間との距離(L)が11〜12mmと小さいため吸収量も比較例にくらべ大幅に向上し、十分に液モレを防止することができた。さらに、臀部第2弾性部材が設けられた実施例1〜2では、臀部割れ目や股間部に弾性部材がくい込むことがなく、履き心地に優れ、優れた漏れ防止性と装着感を両立することができた。
As shown in Tables 1 and 2, in the diaper of Comparative Example 1, the distance (L) between the diaper and the model crotch is as long as 52 mm, and in the liquid leakage prevention evaluation test, the absorption amount is as small as 300 g. Lateral leakage of the liquid occurred in the direction of arrow 68, and the liquid leakage prevention property was not sufficient.
In contrast, in the diapers of Examples 1 to 3 provided with the first buttocks elastic member, the distance (L) between the diaper and the model crotch is as small as 11 to 12 mm, so the amount of absorption is significantly improved compared to the comparative example. The liquid leakage could be sufficiently prevented. Further, in Examples 1 and 2 in which the buttocks second elastic member is provided, the elastic member does not bite into the buttocks cracks and the crotch, and is excellent in comfort and has both excellent leakage prevention and wearing feeling. I was able to.

本発明の一実施形態としての使い捨ておむつを示す、腹側から見た斜視図である。It is the perspective view seen from the ventral side which shows the disposable diaper as one Embodiment of this invention. 図1のおむつを、破断誘導線を破断して展開した状態を肌当接面側からみた状態を示す展開平面図である。FIG. 2 is a developed plan view showing a state in which the diaper of FIG. 1 is developed by breaking a breaking guide line from the skin contact surface side. 図2のA−A線模式断面図である。It is an AA line schematic cross section of FIG. 図1のおむつを、片側の破断誘導線を破断した状態を示す斜視図である。It is a perspective view which shows the state which fractured | ruptured the diaper of FIG. 腹側部位の上端縁を含む位置のミシン目からなる破断誘導線の拡大平面図である。It is an enlarged plan view of the fracture | rupture guide line which consists of a perforation of the position containing the upper end edge of a ventral region. 本発明の別の実施形態としての使い捨ておむつを、破断誘導線を破断して展開した状態を肌当接面側からみた状態を示す展開平面図である。It is an expansion | deployment top view which shows the state which looked at the state which fractured | ruptured the break guide line and expanded the disposable diaper as another embodiment of this invention from the skin contact surface side. 図1のおむつを装着した状態における各弾性部材の伸縮性をモデル化して説明するための着用者背側から見た概略斜視図である。It is the schematic perspective view seen from the wearer's back side for modeling and explaining the elasticity of each elastic member in the state where the diaper of Drawing 1 was put on. 実施例の股間部フィット状態評価試験の説明図である。It is explanatory drawing of the crotch part fitting state evaluation test of an Example. 実施例の液漏れ防止性評価試験の説明図である。It is explanatory drawing of the liquid-leakage prevention evaluation test of an Example.

符号の説明Explanation of symbols

10、20 使い捨ておむつ
2 下帯部材
3 環状外装帯
5 ファスニングテープ
21 臀部第1弾性部材
22 表面シート
23 裏面シート
24 吸収性コア
31 腹側部位
32 背側部位
33 サイドシール部
34 破断誘導線
41 臀部第2弾性部材
42,43 ウエスト弾性部材
44 レッグ弾性部材
61 モデル人形
62 使い捨ておむつ
65 排尿ポイント
66 モデル人形
67 使い捨ておむつ
DESCRIPTION OF SYMBOLS 10, 20 Disposable diaper 2 Lower belt member 3 Annular exterior belt 5 Fastening tape 21 Buttocks 1st elastic member 22 Top sheet 23 Back sheet 24 Absorbent core 31 Abdominal side part 32 Back side part 33 Side seal part 34 Breaking induction line 41 Butt part Second elastic member 42, 43 Waist elastic member 44 Leg elastic member 61 Model doll 62 Disposable diaper 65 Urination point 66 Model doll 67 Disposable diaper

Claims (5)

着用者の胴回りに沿わされる環状外装帯と、該外装帯の腹側部肌面側及び背側部肌面側に接合され股下に沿わされるよう垂設された、吸収性コアを具備する下帯部材とを有する使い捨ておむつであって、
前記環状外装帯の腹側部には外装帯の上縁から下縁にまで延びる一対の破断誘導線があり、該環状外装帯は前記破断誘導線に沿って切断して前記下帯部材から切離し観音開きに開放可能であり、さらに前記破断誘導線の近傍で切り離される外装帯部分にその切断により引き出し可能なファスニングテープが収納されており、前記下帯部材は前記吸収性コアの非肌面側に該下帯部材の長手方向に延びる臀部第1弾性部材を有し、
前記下帯部材は前記吸収性コアより非肌面側に配置された裏面シートを備えており、前記臀部第1弾性部材が前記吸収性コアと該裏面シートとの間に介在されたパンツ型及び展開型両用の使い捨ておむつ。
A ring-shaped outer band extending along the wearer's waist, and an absorbent core that is joined to the abdomen skin surface side and the back skin surface side of the outer band so as to be along the crotch. A disposable diaper having a lower belt member,
There is a pair of breaking guide lines extending from the upper edge to the lower edge of the outer band on the ventral side of the annular outer band, and the annular outer band is cut along the breaking guide line and separated from the lower band member. A fastening tape that can be opened in double doors and that can be pulled out by cutting is housed in an exterior belt portion that is cut off in the vicinity of the break guide wire, and the lower belt member is disposed on the non-skin surface side of the absorbent core. have a hip first elastic member extending in the longitudinal direction of the lower strip member,
The lower belt member includes a back sheet disposed on the non-skin surface side with respect to the absorbent core, and a pants type in which the buttock first elastic member is interposed between the absorbent core and the back sheet; Unfoldable disposable diaper.
前記破断誘導線は着用者の臍に対応する部位を挟んでその両側に背丈方向に延びて平行に設けられており、展開状態でみて前記臀部第1弾性部材がその平行に設けられた一対の破断誘導線及びその延長平行線間に挟まれる位置にある請求項1記載の使い捨ておむつ。   The break guide wire extends in the length direction on both sides across a portion corresponding to the wearer's umbilicus and is provided in parallel, and when viewed in a deployed state, the pair of buttocks first elastic members are provided in parallel. The disposable diaper according to claim 1, wherein the disposable diaper is located between the breaking guide line and the extended parallel line. 前記臀部第1弾性部材は、着用者の臀裂に沿うように線状に延在する請求項1または2記載の使い捨ておむつ。   The disposable diaper according to claim 1 or 2, wherein the first buttocks elastic member extends linearly along a wearer's crack. 前記臀部第1弾性部材が全体において着用者の正中面位置で離間して一対の平行線状になっていて、着用者の股間部に沿うように線状に延在する請求項1、または2に記載の使い捨ておむつ。   The said 1st buttocks 1st elastic member is spaced apart in the wearer's median surface position in the whole, and becomes a pair of parallel line shape, and extends linearly so that a wearer's crotch part may be met. Disposable diapers described in 1. 前記環状外装帯の背側部位には、着用者の胴回りから股下にかけて延在する逆「八」の字状外形の臀部包被部があり、該臀部包被部の逆「八」の字状側縁部に、着用者の股下部付近において該下帯部材の幅方向に伸縮性を有する一対の臀部第2弾性部材を有する、請求項1〜のいずれか1項に記載の使い捨ておむつ。
There is a reverse “eight” -shaped outer cover portion extending from the wearer's torso to the crotch, and the reverse “eight” shape of the reverse cover portion. The disposable diaper of any one of Claims 1-4 which has a pair of buttocks 2nd elastic member which has a stretching property in the width direction of this lower belt member in a wearer's crotch vicinity in a side edge part.
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JP6419114B2 (en) * 2016-06-27 2018-11-07 ユニ・チャーム株式会社 Pants-type absorbent article
JP6775554B2 (en) * 2018-08-14 2020-10-28 ユニ・チャーム株式会社 Absorbent article
JP7089985B2 (en) * 2018-08-14 2022-06-23 ユニ・チャーム株式会社 Disposable diapers
TW202206042A (en) * 2020-06-30 2022-02-16 日商優你 嬌美股份有限公司 Underpants-type absorbent article
JP2023096780A (en) * 2021-12-27 2023-07-07 ユニ・チャーム株式会社 tape type diaper

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JP4225755B2 (en) * 2002-08-23 2009-02-18 白十字株式会社 Disposable absorbent article
JP4108616B2 (en) * 2004-01-20 2008-06-25 ユニ・チャーム株式会社 Pants-type disposable wearing articles
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