JP4966841B2 - Disposable pants-type diapers - Google Patents

Disposable pants-type diapers Download PDF

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JP4966841B2
JP4966841B2 JP2007327747A JP2007327747A JP4966841B2 JP 4966841 B2 JP4966841 B2 JP 4966841B2 JP 2007327747 A JP2007327747 A JP 2007327747A JP 2007327747 A JP2007327747 A JP 2007327747A JP 4966841 B2 JP4966841 B2 JP 4966841B2
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sheet
nonwoven fabric
disposable pants
type diaper
main body
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JP2008080171A (en
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健次 中岡
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Livedo Corp
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Description

本発明は、着用者に対し、漏れにくいという安心感を与える使い捨てパンツ型おむつに関するものである。   The present invention relates to a disposable pants-type diaper that gives a wearer a sense of security that it is difficult to leak.

従来から、前腹部と後背部との間の股部の両側に脚穴部が形成された外装パンツ部材と、この外装パンツ部材の股部に接合されて、おむつ前後方向に延在する吸収性本体とでなる使い捨てパンツ型おむつがある。   Conventionally, an exterior pant member having leg holes formed on both sides of the crotch between the front and back parts, and an absorptivity joined to the crotch of the exterior pant member and extending in the front-rear direction of the diaper There is a disposable pants-type diaper consisting of a main body.

この使い捨てパンツ型おむつでは、吸収性本体の最下層を不透液性素材にすることで漏れ防止機能が確保できるため、外装パンツ部材としては、防漏性よりも、通気性や肌触り・着用感が重視されて、種々の素材からなる不織布が用いられている。   In this disposable pants-type diaper, the leakproof function can be secured by making the lowermost layer of the absorbent main body liquid-impervious material. Has been emphasized, and nonwoven fabrics made of various materials are used.

例えば、特許文献１には、ポリプロピレン系スパンボンド不織布と、ポリプロピレン系メルトブロー不織布と、ポリエチレン系スパンボンド不織布が熱接着された３層構造の積層不織布が、ヒートシール性に優れ、強度があり、柔軟性と風合いに優れていて、使い捨ておむつ等に好適である旨開示されている。
特開２００３−５３８７１号公報 For example, in Patent Document 1, a laminated nonwoven fabric having a three-layer structure in which a polypropylene-based spunbonded nonwoven fabric, a polypropylene-based meltblown nonwoven fabric, and a polyethylene-based spunbonded nonwoven fabric are thermally bonded has excellent heat sealability, strength, and flexibility. It is disclosed that it is excellent in properties and texture and is suitable for disposable diapers and the like.
JP 2003-53871 A

しかし、上記スパンボンド− メルトブロー−スパンボンド積層不織布（以下、ＳＭＳ不織布という）は、中央が極細繊維（繊維径０．１〜１０μｍ）からなるメルトブロー不織布であって厚みが薄く、その両側にスパンボンド不織布を積層しても、全体として薄く、ボリューム感に乏しい。このため、例えば上記外装パンツ部材にＳＭＳ不織布を適用すると、柔軟性や風合いの点では優れていても、ボリューム感がなく薄いという感覚の方が強く、着用者に、尿が漏れてしまうのではないかという不安感を抱かせていることがわかった。   However, the above spunbond-meltblown-spunbond laminated nonwoven fabric (hereinafter referred to as SMS nonwoven fabric) is a meltblown nonwoven fabric with ultrafine fibers (fiber diameter of 0.1 to 10 μm) at the center and is thin and has spunbond on both sides. Even if non-woven fabrics are laminated, they are thin as a whole and lack volume. For this reason, for example, when SMS nonwoven fabric is applied to the exterior pant member, even if it is excellent in terms of flexibility and texture, the sense that it is thin without volume is strong, and urine leaks to the wearer. I found out that there was a sense of anxiety about it.

そこで本発明では、ボリューム感があって着用者に尿漏れが起こる等の不安感を抱かせないような使い捨てパンツ型おむつの提供を課題として掲げた。   Therefore, in the present invention, an object of the present invention is to provide a disposable pants-type diaper that has a sense of volume and does not cause the wearer to feel uneasy such as urine leakage.

本発明の使い捨てパンツ型おむつは、前腹部と後背部と両者の間の股部とからなり、前記股部の両側に脚穴部が形成された外装パンツ部材と、この外装パンツ部材の股部内側に設けられて、おむつ前後方向に延在する吸収性本体とで構成されている使い捨てパンツ型おむつにおいて、上記外装パンツ部材の股部は、上記吸収性本体よりも狭幅に形成されており、且つ、上記吸収性本体は、トップシートとバックシートとの間に吸収性コアを有すると共に、上記吸収性本体の両側に、延出部と立体部とを形成するサイドシートを有しており、上記サイドシートの少なくとも延出部が、捲縮繊維を含む不織布で形成されていることを特徴とする。   The disposable pants-type diaper of the present invention comprises an exterior pant member comprising a front abdomen, a back part, and a crotch between both, and leg holes formed on both sides of the crotch, and a crotch of the exterior pant In the disposable pants-type diaper that is provided on the inner side and is configured with an absorbent main body extending in the front-rear direction of the diaper, the crotch portion of the exterior pant member is formed narrower than the absorbent main body. And the said absorptive main body has a side sheet | seat which forms an extension part and a solid part on both sides of the said absorptive main body while having an absorptive core between a top sheet and a back seat | sheet. The at least extension part of the said side sheet | seat is formed with the nonwoven fabric containing a crimped fiber, It is characterized by the above-mentioned.

捲縮繊維を含む不織布は、捲縮繊維からなるスパンボンド不織布であることが好ましく、サイドシート全体が捲縮繊維からなるスパンボンド不織布で形成されているとより好ましい。捲縮繊維は異形断面繊維であることが好ましい。吸収性本体の前後方向端部は、内側シート、前押さえシートと後押さえシートとの間に挟まれていて、これら端部を押さえ付けるように構成されていることが好ましい。   The nonwoven fabric containing crimped fibers is preferably a spunbond nonwoven fabric made of crimped fibers, and more preferably the entire side sheet is formed of a spunbond nonwoven fabric made of crimped fibers. The crimped fiber is preferably a modified cross-section fiber. It is preferable that the front-back direction edge part of an absorptive main body is pinched | interposed between an inner side sheet, a front pressing sheet, and a rear pressing sheet, and is comprised so that these edge parts may be pressed down.

捲縮繊維からなる不織布を使い捨てパンツ型おむつの脚穴部周囲に用いたことでボリューム感が出たため、着用者に対し漏れ易いという不安感を与えることがなくなった。   Using a non-woven fabric made of crimped fibers around the leg hole of a disposable pant-type diaper gives a sense of volume, so that the wearer does not feel uneasy about leaking easily.

本発明の使い捨てパンツ型おむつの好適な実施形態を、以下、図面を用いて説明する。なお、以下の図面においては、特に重要な部分を除き、接着剤は省略している。ただし、各部材は当業界に公知の手段（ヒートシール、超音波溶着、ホットメルト接着剤による接着等）で、適宜接着されているものとする。   Preferred embodiments of the disposable pants-type diaper of the present invention will be described below with reference to the drawings. In the following drawings, the adhesive is omitted except for particularly important parts. However, each member is appropriately bonded by means known in the art (heat sealing, ultrasonic welding, bonding with a hot melt adhesive, etc.).

本発明の使い捨てパンツ型おむつの一例を、図１の正面図、図２の一部切欠き展開図、図３（ａ）および（ｂ）の断面図を用いて説明する。図３（ａ）は、図２のＡ−Ａ線断面図で、（ｂ）はＢ−Ｂ線断面図である。   An example of the disposable pants-type diaper of the present invention will be described with reference to the front view of FIG. 1, a partially cutout development view of FIG. 2, and cross-sectional views of FIGS. 3 (a) and 3 (b). 3A is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 3B is a cross-sectional view taken along the line BB.

使い捨てパンツ型おむつ１は、外装パンツ部材２と吸収性本体３とで基本構成されている。上記外装パンツ部材２は、前腹部Ｐと後背部Ｑとの間の股部Ｒの両側に脚穴部Ｓを形成した略砂時計形状の内側シート４と外側シート５とを備え、外側シート５の前腹部Ｐと後背部Ｑとは、内側シート４よりもおむつ前後方向Ｘにそれぞれ延長されて、各延長部分には、内向きに折り返された前折り返し部５ａと後折り返し部５ｂとを形成している。   The disposable pants-type diaper 1 basically includes an exterior pant member 2 and an absorbent main body 3. The exterior pant member 2 includes a substantially hourglass-shaped inner sheet 4 and an outer sheet 5 in which leg holes S are formed on both sides of the crotch R between the front abdominal part P and the back part Q. The front abdominal part P and the back part Q are respectively extended in the diaper front-rear direction X from the inner sheet 4, and each extension part is formed with a front folded part 5a and a rear folded part 5b folded inward. ing.

前腹部Ｐと後背部Ｑとのウエスト部分では、内側シート４と外側シート５との間に、複数本のウエスト用弾性部材６が、おむつ幅方向Ｗにそれぞれ伸張状態でホットメルト接着剤等で添設されている。このウエスト用弾性部材６は、内側シート４と各折返し部５ａ、５ｂとの間に添設されていてもよい。また、内側シート４や前後押さえシート９・１０の長さを短くして、ウエスト用弾性部材６を、各折返し部５ａ、５ｂと外側シート５の間に添設する構成であっても構わない。前押さえシート９と後押さえシート１０は、それぞれの端部が各折り返し部５ａ，５ｂと内側シート４との間に挟まれた状態で内側シート４に接着されている。   At the waist part of the front abdomen P and the back part Q, a plurality of waist elastic members 6 are stretched in the diaper width direction W between the inner sheet 4 and the outer sheet 5, respectively, with a hot melt adhesive or the like. It is attached. The elastic member 6 for waist may be attached between the inner sheet 4 and the folded portions 5a and 5b. Moreover, the length of the inner sheet 4 and the front and rear pressing sheets 9 and 10 may be shortened, and the elastic member 6 for waist may be provided between the folded portions 5 a and 5 b and the outer sheet 5. . The front presser sheet 9 and the rear presser sheet 10 are bonded to the inner sheet 4 with their respective end portions being sandwiched between the folded portions 5 a and 5 b and the inner sheet 4.

吸収性本体３の前後方向端部は、内側シート４と、前押さえシート９と後押さえシート１０との間に挟まれていて、これら端部を押さえ付けるように構成されている。また、前腹部Ｐと後背部Ｑにおけるウエスト部分と股部Ｒの間には、内側シート４と外側シート５との間に、複数本の胴部用弾性部材７がおむつ幅方向Ｗに伸張状態で添設され、股部Ｒにおいては、複数本の脚部用弾性部材８が脚穴部Ｓの側縁１６に沿うように伸長状態で添設されている。   The front-back direction edge part of the absorptive main body 3 is pinched | interposed between the inner side sheet | seat 4, the front pressing sheet 9, and the rear pressing sheet | seat 10, and is comprised so that these edge parts may be pressed down. In addition, between the waist portion and the crotch portion R in the front abdomen P and the back portion Q, a plurality of elastic members 7 for the trunk are stretched in the diaper width direction W between the inner sheet 4 and the outer sheet 5. In the crotch portion R, a plurality of leg elastic members 8 are attached in an extended state along the side edges 16 of the leg holes S.

上記吸収性本体３は、透液性のトップシート１１と不透液性のバックシート１２と、これらの両シート１１，１２の間に介在する吸液性コア１３とで構成されていて、使い捨てパンツ型おむつ１の股部Ｒに接着される。前記したように、吸収性本体３の前後端は前押さえシート９・後押さえシート１０と内側シート４との間に挟まった状態で接着されている。   The absorbent main body 3 includes a liquid-permeable top sheet 11, a liquid-impervious back sheet 12, and a liquid-absorbent core 13 interposed between the two sheets 11 and 12, and is disposable. Bonded to the crotch R of the pant diaper 1. As described above, the front and rear ends of the absorbent main body 3 are bonded while being sandwiched between the front pressing sheet 9, the rear pressing sheet 10 and the inner sheet 4.

上記構成の外装パンツ部材２と吸収性本体３との積層体は、股部Ｒを境にして前腹部Ｐと後背部Ｑとを重ね合わせて、前後のサイド部１５ａ同士と１５ｂ同士をヒートシール等することにより、図１のような使い捨てパンツ型おむつ１として組み立てられる。   The laminated body of the exterior pant member 2 and the absorbent main body 3 having the above-described configuration is such that the front part P and the back part Q are overlapped with the crotch part R as a boundary, and the front and rear side parts 15a and 15b are heat sealed. By doing so, the disposable pants-type diaper 1 as shown in FIG. 1 is assembled.

本発明では、内側シート４の少なくとも脚穴部周囲が、捲縮繊維を含む不織布で形成されているところに最大のポイントを有する。ここで、脚穴部周囲とは、脚穴部Ｓの側縁１６から少なくとも３ｃｍ程度内側までの部分を指すが、内側シート４の一部を円状または環状に捲縮繊維を含む不織布で形成することは、実操業上困難である。従って、図４に示したように、脚穴部Ｓの周囲に添設された脚部用弾性部材８の添設箇所を含む部位であって、内側シート４の股部Ｒの左右両側部１７ａ、１７ｂを、捲縮繊維を含む不織布で形成することが望ましい。この側部１７ａ（または１７ｂ）は、脚穴部Ｓの側縁１６の前腹部側端部１６Ｐから寸法ｔ１だけ前腹部Ｐ側にずれたＷ方向に延びるライン１８Ｐと、脚穴部Ｓの側縁１６の後背部側端部１６Ｑから寸法ｔ２だけ後背部Ｑ側にずれたＷ方向に延びるライン１８Ｑと、脚穴部Ｓの側縁１６のうち最もおむつ中央部に入り込んでいる点１６Ｒから寸法ｔ３だけおむつ１の内側でありＸ方向に延びるライン１８ａ（または１８ｂ）と、内側シート４の外縁とで囲まれる部分である。ｔ１〜ｔ３は、大人用おむつの場合、３ｃｍ以上が好ましい。   In the present invention, at least the periphery of the leg hole portion of the inner sheet 4 has a maximum point where it is formed of a nonwoven fabric containing crimped fibers. Here, the periphery of the leg hole portion refers to a portion extending from the side edge 16 of the leg hole portion S to the inner side by at least about 3 cm, and a part of the inner sheet 4 is formed of a nonwoven fabric including crimped fibers in a circular shape or an annular shape. It is difficult to do in actual operation. Accordingly, as shown in FIG. 4, the left and right side portions 17 a of the crotch portion R of the inner sheet 4 are portions including the attachment portion of the leg elastic member 8 attached around the leg hole portion S. 17b is preferably formed of a nonwoven fabric containing crimped fibers. The side portion 17a (or 17b) includes a line 18P extending in the W direction shifted from the front abdominal portion side end portion 16P of the side edge 16 of the leg hole portion S to the front abdominal portion P side by the dimension t1, and the side of the leg hole portion S. Dimension from a line 18Q extending in the W direction shifted from the rear end portion 16Q of the edge 16 toward the back portion Q side by the dimension t2 and a point 16R that is in the center of the diaper most of the side edges 16 of the leg hole S. This is a portion surrounded by a line 18 a (or 18 b) that extends inside the diaper 1 and extends in the X direction by t 3 and the outer edge of the inner sheet 4. In the case of adult diapers, t1 to t3 are preferably 3 cm or more.

また、より好ましくは、上記左右両側部１７ａ、１７ｂに挟まれた中央部１７ｃも、捲縮繊維を含む不織布で形成されていることが好ましい。最も好ましい実施形態は内側シート４の全体を捲縮繊維を含む不織布とする構成である。   More preferably, the central portion 17c sandwiched between the left and right side portions 17a and 17b is also preferably formed of a nonwoven fabric containing crimped fibers. The most preferred embodiment is a configuration in which the entire inner sheet 4 is a nonwoven fabric containing crimped fibers.

上記捲縮繊維とは、捲縮を有する繊維を言い、ボリューム感があり嵩高い不織布を作るために必要である。短繊維からなる不織布の場合、５０質量％以上、より好ましくは７０質量％以上、さらに好ましくは９０質量％以上、捲縮繊維とすることが推奨される。捲縮繊維は、仮撚り等の物理的加工を施す方法、融点の異なる２種以上のポリマーにより芯鞘タイプやサイドバイサイドタイプの複合繊維を製造し、熱処理によって捲縮を発現させる方法、芯鞘繊維の紡糸の際に芯を偏心させることで紡糸工程で捲縮を発現させる方法、異形断面繊維を紡糸して非対称冷却によって捲縮を発現させる方法等によって得ることができる。この最後の方法では、１００％捲縮繊維からなるスパンボンド長繊維不織布を容易に得ることができ、このスパンボンド不織布は、嵩高性、強度等に優れているため、本発明の内側シート４に最適である。   The above-mentioned crimped fiber refers to a fiber having crimps, and is necessary for producing a bulky and bulky nonwoven fabric. In the case of a non-woven fabric composed of short fibers, it is recommended to use crimped fibers of 50% by mass or more, more preferably 70% by mass or more, and still more preferably 90% by mass or more. Crimped fiber is a method of performing physical processing such as false twisting, a method of producing a core-sheath type or side-by-side type composite fiber by using two or more polymers having different melting points, and expressing crimps by heat treatment, core-sheath fiber The method can be obtained by a method in which crimps are expressed in the spinning process by decentering the core during spinning, a method in which irregular cross-section fibers are spun and a crimp is expressed by asymmetric cooling, and the like. In this last method, it is possible to easily obtain a spunbond long fiber nonwoven fabric made of 100% crimped fibers. Since this spunbond nonwoven fabric is excellent in bulkiness, strength, etc., the inner sheet 4 of the present invention is used. Is optimal.

いずれの製法による不織布であっても、捲縮繊維を含む不織布は、その目付が１０ｇ／ｍ2以上であることが好ましい。嵩高な不織布を脚回りに配し、着用者に、尿漏れしないという安心感を与えるためには、目付が１０ｇ／ｍ2以上が好ましいからである。不織布の目付は高い方が好ましいが、高過ぎると肌触り感が低下するため、その上限は３５ｇ／ｍ2とするのがよい。 It is preferable that the basis weight of the nonwoven fabric containing crimped fibers is 10 g / m 2 or more, regardless of which method is used. This is because the basis weight is preferably 10 g / m 2 or more in order to dispose a bulky nonwoven fabric around the legs and give the wearer a sense of security that urine does not leak. The nonwoven fabric preferably has a higher basis weight, but if it is too high, the feeling of touch will be reduced, so the upper limit is preferably 35 g / m 2 .

捲縮繊維は、嵩高性を得るために、繊維１ｃｍあたり５個以上の捲縮を有することが好ましい。より好ましい捲縮数は、１０個／１ｃｍ以上である。異形断面繊維で捲縮繊維からなるスパンボンド不織布を製造する場合は、図５（ａ）〜（ｆ）に示した断面の繊維が好ましい。中でも、Ｖ字状（ｃ）、Ｕ字状（ｄ）、Ｙ字状（ｅ）が嵩高い不織布を得られる点で好ましい。ポイントボンド短繊維不織布（エンボスロールによりウエブ中の繊維を熱融着する方法で得られる短繊維不織布）や、スパンボンド長繊維不織布等の繊維同士を熱圧着させる方法で不織布を得る場合、２．０〜５．０ｍｍピッチで、エンボス部（円形状）の直径が０．２〜１．５ｍｍ、エンボス率（エンボス部の面積比率）６．０〜８．５％とすると、嵩高性を失わず、強度をも有する不織布となるため好ましい。   The crimped fiber preferably has 5 or more crimps per 1 cm of the fiber in order to obtain bulkiness. A more preferable number of crimps is 10 pieces / cm or more. When producing a spunbonded nonwoven fabric made of crimped fibers with irregular cross-section fibers, the cross-section fibers shown in FIGS. Among these, V-shaped (c), U-shaped (d), and Y-shaped (e) are preferable in that a bulky nonwoven fabric can be obtained. 1. When obtaining a non-woven fabric by a method of thermocompression bonding fibers such as a point bond short fiber non-woven fabric (short fiber non-woven fabric obtained by heat-sealing the fibers in the web with an embossing roll) or a spunbond long-fiber non-woven fabric. When the pitch of the embossed part (circular shape) is 0.2 to 1.5 mm and the embossing rate (area ratio of the embossed part) is 6.0 to 8.5% at a pitch of 0 to 5.0 mm, the bulkiness is not lost. It is preferable because it is a non-woven fabric having strength.

繊維の素材としては、ポリプロピレン、ポリエチレン、ポリエステル、ポリアミド等を利用することが好ましい。短繊維不織布の場合はレーヨンやコットン等の親水性繊維を混在させてもよい。疎水性繊維の場合は、界面活性剤等で親水化処理（塗布または練り込み）を施すことが好ましい。親水性繊維の利用や親水化処理は、肌触りが良好になる他、吸汗作用が発揮されるためムレ防止に効果的である。   As the fiber material, it is preferable to use polypropylene, polyethylene, polyester, polyamide or the like. In the case of a short fiber nonwoven fabric, hydrophilic fibers such as rayon and cotton may be mixed. In the case of hydrophobic fibers, it is preferable to perform a hydrophilic treatment (coating or kneading) with a surfactant or the like. The use of hydrophilic fibers and hydrophilization treatment are effective in preventing stuffiness because the skin feels good and the sweat-absorbing action is exhibited.

内側シート４はその全部が捲縮繊維のみからなるスパンボンド不織布で構成されていることが好ましいが、さらに他の不織布を積層してもよい。また、前記したように、両側部１７ａ、１７ｂや、１７ｃを捲縮繊維を含む不織布で形成し、他の部分は捲縮繊維を含まない不織布で形成してもよい。この場合は、捲縮繊維を含む不織布と含まない不織布を適宜接合するか、基体となる不織布の上に捲縮繊維を含む不織布を部分的に積層する等の手段を採用すればよい。基体となる不織布としては、特に限定されず、捲縮繊維を含まないスパンボンド不織布やメルトブロー不織布、あるいはＳＭＳ（スパンボンド−メルトブロー−スパンボンド）不織布等が好適である。   The inner sheet 4 is preferably made of a spunbonded nonwoven fabric that consists entirely of crimped fibers, but other nonwoven fabrics may be laminated. Moreover, as above-mentioned, both sides 17a, 17b, and 17c may be formed with the nonwoven fabric containing a crimped fiber, and another part may be formed with the nonwoven fabric which does not contain a crimped fiber. In this case, a means such as appropriately joining a non-woven fabric containing crimped fibers and a non-containing non-woven fabric, or partially laminating non-woven fabric containing crimped fibers on the non-woven fabric serving as a substrate may be employed. The nonwoven fabric used as the substrate is not particularly limited, and a spunbond nonwoven fabric, a meltblown nonwoven fabric, an SMS (spunbond-meltblown-spunbond) nonwoven fabric or the like that does not include crimped fibers is preferable.

外側シート５は、折返し部５ａ、５ｂを除き、内側シート４と同形状に形成される。外側シート５の素材としては、ポリプロピレン、ポリエチレン、ポリエステル、ポリアミド等を利用した通気性があって撥水性の不織布（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）が好ましく用いられる。外側シート５は、複合繊維からなるものであってもよく、上記捲縮繊維を含む不織布を利用することもできる。外側シート５の目付は、１０〜２５ｇ／ｍ2が好ましい。 The outer sheet 5 is formed in the same shape as the inner sheet 4 except for the folded portions 5a and 5b. As a material of the outer sheet 5, a breathable and water-repellent nonwoven fabric (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) using polypropylene, polyethylene, polyester, polyamide or the like is preferably used. The outer sheet 5 may be made of a composite fiber, and a non-woven fabric containing the crimped fiber can also be used. The basis weight of the outer sheet 5 is preferably 10 to 25 g / m 2.

ウエスト用弾性部材６、胴部用弾性部材７、脚部用弾性部材８は、天然ゴムや合成ゴム（ポリウレタンや熱可塑性エラストマー等）製の糸状部材、帯状部材、フィルム状部材が使用可能である。ウエスト用弾性部材６は、内側シート４と外側シート５との間（または内側シート４と外側シート５の各折返し部５ａ、５ｂとの間）に伸長状態で添設される。７００〜２０００ｄｔｅｘのポリウレタン糸を倍率２．０〜４．０倍に伸張して添設するとよい。胴部用弾性部材７は、内側シート４と外側シート５との間に添設され、３００〜２０００ｄｔｅｘのポリウレタン糸や幅５〜１０ｍｍ程度のポリウレタンフィルムを１〜４．０倍に伸張して添設する構成が望ましい。なお、後背側Ｑの脚部用弾性部材８は、フィルム状弾性部材の方が平らで背中にフィットし易いため望ましい。脚部用弾性部材８も内側シート４と外側シート５との間に添設される。３００〜１８５０ｄｔｅｘのポリウレタン糸を倍率１．１〜３．０倍に伸張して添設するのが好適である。各弾性部材６，７，８を不織布に接着するには、ホットメルト接着剤による接着、ヒートシール、超音波溶着等の手段が採用可能であるが、ホットメルト接着剤を塗工して接着する方法が簡便である。   The elastic member 6 for waist, the elastic member 7 for trunk | drum, and the elastic member 8 for legs can use the thread-like member, strip | belt-shaped member, and film-like member made of natural rubber or synthetic rubber (polyurethane, thermoplastic elastomer, etc.). . The elastic member 6 for waist is attached in an extended state between the inner sheet 4 and the outer sheet 5 (or between the inner sheet 4 and the folded portions 5a and 5b of the outer sheet 5). A polyurethane yarn of 700 to 2000 dtex is preferably stretched to a magnification of 2.0 to 4.0 times. The body elastic member 7 is attached between the inner sheet 4 and the outer sheet 5, and is stretched by 1 to 4.0 times of a 300 to 2000 dtex polyurethane yarn or a polyurethane film having a width of about 5 to 10 mm. A configuration to be installed is desirable. The leg elastic member 8 on the back side Q is desirable because the film-like elastic member is flatter and easier to fit on the back. The leg elastic member 8 is also provided between the inner sheet 4 and the outer sheet 5. It is preferable that a 300 to 1850 dtex polyurethane yarn is stretched at a magnification of 1.1 to 3.0 times. In order to bond the elastic members 6, 7, and 8 to the nonwoven fabric, it is possible to adopt means such as bonding with a hot melt adhesive, heat sealing, ultrasonic welding, etc., but the hot melt adhesive is applied and bonded. The method is simple.

前押さえシート９、後押さえシート１０は、セルロース、レーヨン、コットン等の親水性繊維からなる透液性の不織布や、ポリプロピレン、ポリエチレン、ポリエステル、ポリアミド等の疎水性繊維製の不織布を界面活性剤等で親水化処理した透液性不織布や、内面のみを親水化処理した〔界面活性剤を塗布するあるいは親水性繊維（レーヨン、コットン等）の層を作る。〕通気性・撥水性の不織布（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）が好ましく利用できる。中でも、上記疎水性繊維製の不織布を親水化処理した透液性不織布〔ポイントボンド不織布や、エアースルー不織布（連続熱風処理によりウエブ中の繊維を熱融着する方法で得られる不織布）〕が好ましく、その目付は１０〜２５ｇ／ｍ2程度が好適である。各押さえシート９，１０は、吸収性本体３の前後端がめくれあがって内側シート４から剥がれてしまわないように押さえ付ける作用を有するが、吸収性本体３を着脱自在にする構成を採用する際等には取付けなくてもよい。 The front presser sheet 9 and the rear presser sheet 10 are made of a liquid-permeable non-woven fabric made of hydrophilic fibers such as cellulose, rayon, or cotton, or a non-woven fabric made of hydrophobic fibers such as polypropylene, polyethylene, polyester, polyamide, etc. The liquid-permeable nonwoven fabric subjected to the hydrophilic treatment in (1) or the hydrophilic treatment of only the inner surface [applying a surfactant or forming a layer of hydrophilic fibers (rayon, cotton, etc.). Breathable / water-repellent nonwoven fabrics (spunbond nonwoven fabrics, melt blown nonwoven fabrics, SMS nonwoven fabrics, etc.) can be preferably used. Among these, a liquid-permeable nonwoven fabric [point-bonded nonwoven fabric or air-through nonwoven fabric (nonwoven fabric obtained by heat-sealing fibers in a web by continuous hot air treatment)] obtained by hydrophilizing the hydrophobic nonwoven fabric is preferable. The basis weight is preferably about 10 to 25 g / m 2 . Each of the presser sheets 9 and 10 has a function of pressing so that the front and rear ends of the absorbent main body 3 are turned up and are not peeled off from the inner sheet 4, but when adopting a configuration in which the absorbent main body 3 is detachable. It is not necessary to attach to etc.

吸収性本体３のトップシート１１は透液性の不織布が好ましく、前押さえシート９や後押さえシート１０のところで例示した不織布をそのまま利用できる。１０〜２５ｇ／ｍ2程度の目付で、疎水性繊維製の不織布を親水化処理した透液性不織布（上記ポイントボンド不織布や、エアースルー不織布）がより好ましい。 The top sheet 11 of the absorbent main body 3 is preferably a liquid-permeable nonwoven fabric, and the nonwoven fabrics exemplified in the front pressing sheet 9 and the rear pressing sheet 10 can be used as they are. A liquid-permeable nonwoven fabric (the above-mentioned point bond nonwoven fabric or air-through nonwoven fabric) obtained by hydrophilizing a nonwoven fabric made of hydrophobic fibers with a basis weight of about 10 to 25 g / m 2 is more preferable.

吸収性本体３のバックシート１２は不透液性の素材とする。尿漏れ防止のためである。具体的には、前記した疎水性繊維からなる撥水性不織布材料（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）、プラスチックフィルム（通気性であっても非通気性であっても良いが、通気性プラスチックフィルムが望ましい）や、これらの積層材料が用いられる。好ましくは、目付１５〜４０ｇ／ｍ2の通気性ポリエチレンフィルムである。 The back sheet 12 of the absorbent main body 3 is a liquid-impermeable material. This is to prevent urine leakage. Specifically, a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) made of the above-mentioned hydrophobic fibers, plastic film (which may be breathable or non-breathable, but breathable) A plastic film is desirable), and these laminated materials are used. A breathable polyethylene film having a basis weight of 15 to 40 g / m 2 is preferable.

トップシート１１とバックシート１２との間に挟まれる吸液性コア１３は、粉砕したパルプ繊維やセルロース繊維等の親水性繊維集合層に高吸水性樹脂粉末を混合し、これを、ティッシュペーパー等の紙シートあるいは透液性不織布等の被覆シートで包んで、所定形状（長方形、砂時計型、ひょうたん型等）に成形した吸収体が使用可能である。上記繊維や高吸水性樹脂粉末をシート状に成形したシート状吸収体（例えばエアレイド吸収体）や、繊維を用いずに高吸水性樹脂粉末を不織布で挟み込んだ構成の超薄型シート状吸収体を用いてもよい。また、着用者が歩いたり、寝返りを打ったりしても形状を保持できるように、親水性繊維集合層中やシートに形状保持手段（ホットメルト接着剤の塗布、合成繊維の混合）を施しても構わない。   The liquid-absorbent core 13 sandwiched between the top sheet 11 and the back sheet 12 is mixed with a superabsorbent resin powder in a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber, and this is mixed with tissue paper or the like. It is possible to use an absorbent body that is wrapped in a cover sheet such as a paper sheet or a liquid-permeable nonwoven fabric and molded into a predetermined shape (rectangular shape, hourglass shape, gourd shape, etc.). A sheet-like absorbent body (for example, an air-laid absorbent body) obtained by molding the above-mentioned fibers or superabsorbent resin powder into a sheet shape, or an ultra-thin sheet-form absorbent body in which a superabsorbent resin powder is sandwiched between nonwoven fabrics without using fibers. May be used. In order to maintain the shape even when the wearer walks or rolls over, shape retention means (application of hot melt adhesive, mixing of synthetic fibers) is applied to the hydrophilic fiber aggregate layer or sheet. It doesn't matter.

次に、本発明の使い捨てパンツ型おむつの他の好適例について、図面を用いて説明する。図６に使い捨てパンツ型おむつ２１の正面図を、図７（ａ）に一部切欠き展開図を、（ｂ）に外装パンツ部材２２の展開図を、図８（ａ）に図７（ａ）のＡ−Ａ線断面図を、図８（ｂ）に図７（ａ）のＢ−Ｂ線断面図を示した。使い捨てパンツ型おむつ２１は、外装パンツ部材２２と吸収性本体２３とで基本構成されている。   Next, another preferred example of the disposable pants-type diaper of the present invention will be described with reference to the drawings. FIG. 6 is a front view of the disposable pants-type diaper 21, FIG. 7A is a partially cutaway development view, FIG. 6B is a development view of the exterior pant member 22, and FIG. ) Is a cross-sectional view taken along the line AA of FIG. 8, and FIG. 8B is a cross-sectional view taken along the line BB of FIG. 7A. The disposable pant-type diaper 21 basically includes an exterior pant member 22 and an absorbent main body 23.

上記外装パンツ部材２２は、前腹部Ｐと後背部Ｑとの間の股部Ｒの両側に脚穴部Ｓを形成した内側シート２４と外側シート２５とを備え、外側シート２５の前腹部Ｐと後背部Ｑとは、内側シート２４よりもおむつ前後方向Ｘにそれぞれ延長されて、各延長部分には、内向きに折り返された前折り返し部２５ａと後折り返し部２５ｂとを形成している。   The exterior pant member 22 includes an inner sheet 24 and an outer sheet 25 in which leg holes S are formed on both sides of the crotch R between the front abdomen P and the back part Q, and the front abdomen P of the outer sheet 25 The back portion Q is extended in the diaper front-rear direction X from the inner sheet 24, and a front folded portion 25a and a rear folded portion 25b folded inward are formed in each extended portion.

そして、前腹部Ｐと後背部Ｑとのウエスト部分に相当する各折り返し部２５ａ，２５ｂの間には、前押さえシート２９と後押さえシート３０を挟み込んだ状態で、複数本のウエスト用弾性部材２６がおむつ幅方向Ｗにそれぞれ伸張状態で、ホットメルト接着剤等で接着されている。また、後背部Ｑの内側シート２４と外側シート２５との間には、複数本の背中用弾性部材２７がおむつ幅方向Ｗに伸張状態で添設されている。   A plurality of waist elastic members 26 are sandwiched between the folded portions 25a and 25b corresponding to the waist portions of the front abdominal part P and the back part Q, with the front pressing sheet 29 and the rear pressing sheet 30 sandwiched therebetween. Are stretched in the diaper width direction W and bonded with a hot melt adhesive or the like. Further, a plurality of back elastic members 27 are attached in an extended state in the diaper width direction W between the inner sheet 24 and the outer sheet 25 of the back portion Q.

図７に示したように、上記外装パンツ部材２２の前腹部Ｐと後背部Ｑとは、おむつ幅方向Ｗに長い長方形状に形成されるとともに、前腹部Ｐの下端は、おむつ幅方向Ｗに直線状に形成されて、脚穴部Ｓの直線状前縁部２２ｂを構成する。一方、前腹部Ｐの下端のおむつ幅方向Ｗの中央部には、細い括れ状の股部Ｒの前部が形成されて、脚穴部Ｓの括れ状縁部２２ｄを構成する。さらに、上記後背部Ｑの下端のおむつ幅方向Ｗの全体に、前記細い括れ状の股部Ｒの前部に、外方膨らみ状の股部Ｒの後部が連なっていて、この股部Ｒの後部の外縁は、脚穴部Ｓの膨らみ状後縁部２２ｃを構成している。そして、前腹部Ｐの下端、つまり脚穴部Ｓの前縁部２２ｂに相当する内側シート２４と外側シート２５との間には、この前縁部２２ｂに沿って、おむつ幅方向Ｗに直線状で複数本の前脚周り用弾性部材２８Ａが伸張状態で添設されている。また、股部Ｒの後部の外縁、つまり脚穴部Ｓの後縁部２２ｃに相当する内側シート２４と外側シート２５との間には、この後縁部２２ｃに沿って、膨らみ状で複数本の後脚周り用弾性部材２８Ｂが伸張状態で添設されている。なお、細い括れ状の股部Ｒの前部には弾性部材は添設されない。   As shown in FIG. 7, the front abdomen P and the back part Q of the exterior pant member 22 are formed in a long rectangular shape in the diaper width direction W, and the lower end of the front abdomen P is in the diaper width direction W. It is formed in a straight line and constitutes a straight front edge 22b of the leg hole S. On the other hand, at the center of the lower end of the front abdominal part P in the diaper width direction W, a front part of a narrow constricted crotch part R is formed to constitute a constricted edge part 22d of the leg hole part S. Furthermore, the rear part of the outwardly bulging crotch part R continues to the front part of the thin constricted crotch part R over the entire lower diaper width direction W of the back part Q, and The outer edge of the rear part constitutes a bulging rear edge part 22c of the leg hole part S. And between the inner sheet 24 and the outer sheet 25 corresponding to the lower end of the front abdominal part P, that is, the front edge part 22b of the leg hole part S, a straight line is formed in the diaper width direction W along the front edge part 22b. A plurality of front leg elastic members 28A are attached in an extended state. In addition, a plurality of bulges are formed along the rear edge 22c between the outer sheet 25 and the outer sheet 25 corresponding to the rear edge of the crotch R, that is, the rear edge 22c of the leg hole S. The rear leg elastic member 28B is attached in an extended state. Note that no elastic member is attached to the front portion of the narrow constricted crotch portion R.

この後脚周り用弾性部材２８Ｂは、使い捨てパンツ型おむつ２１がおむつ幅方向Ｗに搬送される横流れ状態で製造されるときには、股部Ｒを横切るように連続した蛇行状で添設した後に、股部Ｒに配設される吸収性本体２３の吸液性コア３３に収縮力が及ばないように、後脚周り用弾性部材２８Ｂは、吸液性コア３３との重なり部では収縮力が発現しない（小さくする）ように設定することが好ましい。この後脚周り用弾性部材２８Ｂの収縮力が発現しないようにするには、（１）外側シート２５と内側シート２４との間に後脚周り用弾性部材２８Ｂを挟んで接着した後に、収縮力を発現させない部位の後脚周り用弾性部材２８Ｂを複数の細かい片に切断する方法、（２）外側シート２５と内側シート２４との間に後脚周り用弾性部材２８Ｂを挟んで接着せずに、外側シート２５と内側シート２４の外側から収縮力を発現させない部位の後脚周り用弾性部材２８Ｂを切断する方法、（３）収縮力を発現させない部位では、後脚周り用弾性部材２８Ｂを伸張しないように添設する方法、等から適切に選べば良い。そして、上記後脚周り用弾性部材２８Ｂが吸収性本体２３の吸液性コア３３に掛かる部位では収縮力が発現しないように設定するために、後脚周り用弾性部材２８Ｂの切断端２８ａを吸収性本体２３の吸液性コア３３に掛かる直前となるように構成することが望ましい。   When the disposable pants-type diaper 21 is manufactured in a lateral flow state in which the disposable pant-type diaper 21 is conveyed in the diaper width direction W, the rear leg elastic member 28B is attached in a continuous meandering shape so as to cross the crotch R. The rear leg elastic member 28 </ b> B does not exhibit a contraction force in an overlapping portion with the liquid absorbent core 33 so that the contraction force does not reach the liquid absorbent core 33 of the absorbent main body 23 disposed in the portion R. It is preferable to set so as to be small. In order to prevent the contraction force of the rear leg elastic member 28 </ b> B from appearing, (1) the rear leg elastic member 28 </ b> B is sandwiched between the outer sheet 25 and the inner sheet 24 and bonded. A method of cutting the elastic member 28B around the rear leg into a plurality of fine pieces, and (2) without attaching the elastic member 28B around the rear leg between the outer sheet 25 and the inner sheet 24 A method of cutting the rear leg elastic member 28B where the contraction force is not expressed from the outside of the outer sheet 25 and the inner sheet 24; (3) the rear leg elastic member 28B is extended where the contraction force is not expressed. Appropriately choose from the method of attaching so as not to. Then, in order to set so that the contraction force does not appear at the portion where the rear leg elastic member 28B is applied to the absorbent core 33 of the absorbent main body 23, the cut end 28a of the rear leg elastic member 28B is absorbed. It is desirable to configure so as to be immediately before it is applied to the liquid-absorbent core 33 of the conductive main body 23.

また、脚穴部Ｓの前縁部２２ｂの複数本の前脚周り用弾性部材２８Ａは、この前縁部２２ｂからウエスト用弾性部材２６の方向に向かって収縮力が順次弱くなるように設定するのが望ましい。着用者の脚に弾性部材が食い込むのを防ぐことができる。この設定方法の一例として、複数本の前脚周り用弾性部材２８Ａの太さ（または幅）を前縁部２２ｂに近いほど大きくすれば、大きい方が収縮力が強くなる。従って、製造工程では、複数本の前脚周り用弾性部材２８Ａを同じ伸張倍率で引っ張った状態で添設するだけで収縮力を変えることができるので、収縮力を順次弱くする設定が容易になる。また、複数本の前脚周り用弾性部材２８Ａの間隔を前縁部２２ｂに近いほど狭くすれば、同じ太さの前脚周り用弾性部材２８Ａを同じ伸張倍率で引っ張った状態で添設するだけで、収縮力を変えることができるので、収縮力を順次弱くする設定が容易になる。   The plurality of front leg elastic members 28A of the front edge portion 22b of the leg hole S are set so that the contraction force gradually decreases from the front edge portion 22b toward the waist elastic member 26. Is desirable. It is possible to prevent the elastic member from biting into the wearer's leg. As an example of this setting method, if the thickness (or width) of the plurality of front leg-around elastic members 28A is made closer to the front edge portion 22b, the larger the contraction force becomes. Accordingly, in the manufacturing process, the contraction force can be changed simply by attaching the plurality of front leg-around elastic members 28A while being pulled at the same expansion ratio. Further, if the interval between the plurality of front leg elastic members 28A is made closer to the front edge portion 22b, the front leg elastic members 28A having the same thickness can be attached in a state where they are pulled at the same expansion ratio. Since the contraction force can be changed, it becomes easy to make the contraction force weaker in sequence.

吸収性本体２３は、トップシート３１とバックシート３２との間に吸液性コア３３が装填されていて、この吸液性コア３３の幅は、上記外装パンツ部材２の細い括れ状の股部Ｒの前部の幅２２ｅとほぼ同じ幅に設定されている。なお、吸液性コア３３がひょうたん型のような場合には、コア３３の最も括れた箇所が股部Ｒの前部の幅２２ｅとほぼ同じ幅になるように設定する。さらに、吸収性本体２３の両側には、延出部３４Ａと立体部３４Ｂとを形成するサイドシート３４が配置され、このサイドシート３４の下端部３４ａは上記バックシート３２の下面に接着され、この下端部３４ａに連なって外方に延出する延出部３４Ａが形成されている。吸収性本体２３は、上記外装パンツ部材２の股部Ｒの前部の幅２２ｅより広く形成されており、サイドシート３４の延出部３４Ａが股部Ｒの前部から外方に延出されることになる。このサイドシート３４の延出部３４Ａ内の幅方向端縁近傍には、延出用弾性部材３５がおむつ前後方向に伸張状態で添設されている。   The absorbent main body 23 is provided with a liquid absorbent core 33 between the top sheet 31 and the back sheet 32, and the width of the liquid absorbent core 33 is the narrow constricted crotch portion of the exterior pant member 2. The width is set to be substantially the same as the width 22e of the front portion of R. When the liquid-absorbing core 33 is a gourd type, it is set so that the most constricted portion of the core 33 is substantially the same width as the width 22e of the front portion of the crotch portion R. Further, on both sides of the absorbent main body 23, a side sheet 34 that forms an extending part 34A and a three-dimensional part 34B is disposed, and a lower end part 34a of the side sheet 34 is bonded to the lower surface of the back sheet 32, An extending portion 34A that extends outwardly from the lower end portion 34a is formed. The absorbent main body 23 is formed wider than the width 22e of the front portion of the crotch portion R of the exterior pant member 2, and the extending portion 34A of the side seat 34 extends outward from the front portion of the crotch portion R. It will be. In the vicinity of the edge in the width direction in the extending portion 34A of the side seat 34, an extending elastic member 35 is attached in a stretched state in the front-rear direction of the diaper.

また、吸収性本体２３には、サイドシート３４の延出部３４Ａに連なって上方に立ち上がる立体部３４Ｂが形成されている。この立体部３４Ｂは、起立基端部３４ｂが上記トップシート３１にホットメルト接着剤３６で接着され、立体部３４Ｂの起立自由端部３４ｃは、外向きに折り返されて、この折り返し部分には、立体用弾性部材３７がおむつ前後方向Ｘに伸張状態で添設されているので、立体部３４Ｂは、起立基端部３４ｂからおむつ幅方向Ｗの外方に向かって立ち上がるように構成されている。なお、立体部３４Ｂの前後端部は、外面が起立基端部３４ｂよりも幅方向外側にあるサイドシート３４の上面に接着されている。なお、延出部３４Ａおよび立体部３４Ｂは、サイドシート３４に一体に形成した例を示したが、別部材としてそれぞれ吸収性本体２３に接着するようにしても良い。   In addition, the absorbent main body 23 is formed with a three-dimensional portion 34B that rises upward in continuation with the extending portion 34A of the side seat 34. In the three-dimensional part 34B, the standing base end part 34b is bonded to the top sheet 31 with the hot melt adhesive 36, and the standing free end part 34c of the three-dimensional part 34B is folded outward, and the folded part includes Since the three-dimensional elastic member 37 is attached in a stretched state in the diaper front-rear direction X, the three-dimensional portion 34B is configured to rise outward from the standing base end portion 34b in the diaper width direction W. Note that the front and rear end portions of the three-dimensional portion 34B are bonded to the upper surface of the side sheet 34 whose outer surface is on the outer side in the width direction than the upright base end portion 34b. In addition, although the extension part 34A and the three-dimensional part 34B showed the example formed integrally in the side seat | sheet 34, you may make it adhere | attach to the absorptive main body 23 as another member, respectively.

上記吸収性本体２３は、上記外装パンツ部材２２に図７（ａ）のような位置関係で、適宜ホットメルト接着剤等により接着される。上記吸収性本体２３の前後端部は、前押さえシート２９と後押さえシート３０とで覆われるようになる。この前押さえシート２９と後押さえシート３０とは、外装パンツ部材２２に全面接着しても良いが、前後漏れの尿等をキープするためのポケットに形成することも可能である。   The said absorptive main body 23 is suitably adhere | attached with the hot-melt-adhesive etc. with the positional relationship like FIG. The front and rear end portions of the absorbent main body 23 are covered with the front pressing sheet 29 and the rear pressing sheet 30. The front presser sheet 29 and the rear presser sheet 30 may be bonded to the exterior pant member 22 in their entirety, but can also be formed in a pocket for keeping urine leaking from the front and rear.

この使い捨てパンツ型おむつ２１においても、脚穴部Ｓの直線状前縁部２２ｂ、股部Ｒの前部の括れ状縁部２２ｄおよび外方膨らみ状後縁部２２ｃの各縁部から少なくとも３ｃｍ内側までを、捲縮繊維を含む不織布で形成する。脚周りに嵩高な不織布を配することで、着用者に漏れにくいとの安心感を与えるためである。脚穴部Ｓの直線状前縁部２２ｂから少なくとも３ｃｍ前腹部Ｐ側に入り込んだＷ方向のラインから、後脚周り用弾性部材２８Ｂが配設されている部分までの全て（おおむね、前押さえシート２９の股部Ｒ寄りの端縁部から、後押さえシート３０の股部Ｒ寄りの端縁部まで）を、捲縮繊維を含む不織布で形成することが望ましく、内側シート２４の全体を捲縮繊維を含む不織布で形成することが最も好ましい。   Also in the disposable pants-type diaper 21, the straight front edge portion 22b of the leg hole S, the constricted edge portion 22d of the front portion of the crotch portion R, and the outwardly bulging rear edge portion 22c are at least 3 cm inside. Is formed of a nonwoven fabric containing crimped fibers. This is because a bulky nonwoven fabric is arranged around the legs to give the wearer a sense of security that it is difficult to leak. Everything from the line in the W direction that has entered the front abdomen P side at least 3 cm from the straight front edge 22b of the leg hole S to the part where the elastic member 28B for the rear leg is disposed (generally, the front presser sheet) 29 from the end edge portion near the crotch portion R to the end edge portion near the crotch portion R of the rear presser sheet 30 is desirably formed of a nonwoven fabric including crimped fibers, and the entire inner sheet 24 is crimped. Most preferably, it is formed of a nonwoven fabric containing fibers.

なお、この使い捨てパンツ型おむつ２１は、前記したように、股部Ｒの前部が非常に狭幅に形成され、吸収性本体２３の延出部３４Ａが股部Ｒの前部から外方に延出されて、着用者の脚周りに接することとなる。従って、吸収性本体２３のサイドシート３４の延出部３４Ａも、捲縮繊維を含む不織布によって形成することが好ましい。延出部３４Ａ以外のサイドシート３４は、捲縮繊維を含む不織布であっても、通常の通気性・撥水性不織布（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）であってもいずれでもよい。目付は１０〜２５ｇ／ｍ２が好ましい。 As described above, the disposable pants-type diaper 21 has the front portion of the crotch portion R formed with a very narrow width, and the extending portion 34A of the absorbent main body 23 extends outward from the front portion of the crotch portion R. It extends and touches around the wearer's leg. Therefore, it is preferable that the extending portion 34A of the side sheet 34 of the absorbent main body 23 is also formed of a nonwoven fabric containing crimped fibers. The side sheet 34 other than the extending portion 34A may be a non-woven fabric containing crimped fibers, or a normal breathable / water-repellent non-woven fabric (spunbond non-woven fabric, melt blown non-woven fabric, SMS non-woven fabric, etc.). The basis weight is preferably 10 to 25 g / m 2 .

この使い捨てパンツ型おむつ２１の立体部３４に添設される立体用弾性部材３７や、延出部３４Ａに添設される延出用弾性部材３５は、天然ゴムや合成ゴム（ポリウレタンや熱可塑性エラストマー等）製の糸状部材、帯状部材、フィルム状部材が使用可能である。立体用弾性部材３７には、３００〜２０００ｄｔｅｘのポリウレタン糸を倍率１．１〜４．０倍に伸張して添設する構成が望ましい。また、延出用弾性糸３５は、前記使い捨てパンツ型おむつ１における脚部用弾性部材と同等の構成が望ましい。   The three-dimensional elastic member 37 attached to the three-dimensional portion 34 of the disposable pants-type diaper 21 and the extending elastic member 35 attached to the extending portion 34A are natural rubber or synthetic rubber (polyurethane or thermoplastic elastomer). Etc.) A thread-like member, a strip-like member, or a film-like member made of a material can be used. The three-dimensional elastic member 37 preferably has a configuration in which a 300 to 2000 dtex polyurethane yarn is stretched at a magnification of 1.1 to 4.0 times. The extending elastic yarn 35 preferably has the same configuration as the leg elastic member in the disposable pants-type diaper 1.

上記各材料の接合は、ホットメルト接着剤、ヒートシール、超音波溶着等の方法が適宜用いられる。ホットメルト接着剤については、ゴム系、ポリオレフィン系、酢酸ビニル系等のホットメルト接着剤から適切に選定して、直接的なコーター塗布、間接的なスパイラル塗布、メルトブロー（カーテンスプレー）塗布、ビード塗布等の方法で塗布する。なお、サイド部２２ａについては、熱接合が好ましい。なお、使い捨てパンツ型おむつ２１における各種素材は、前記使い捨てパンツ型おむつ１における対応する素材と同等の構成が望ましいので、説明を省略する。   For joining the above materials, methods such as hot melt adhesive, heat sealing, ultrasonic welding and the like are appropriately used. For hot melt adhesives, select from hot melt adhesives such as rubber, polyolefin, vinyl acetate, etc., direct coater coating, indirect spiral coating, melt blow (curtain spray) coating, bead coating. Apply by the method. In addition, about the side part 22a, thermal bonding is preferable. In addition, since the various materials in the disposable pants-type diaper 21 preferably have the same configuration as the corresponding materials in the disposable pants-type diaper 1, the description thereof is omitted.

本発明は、各図に示した使い捨てパンツ型おむつ１や２１の形態・構成に限られず、適宜変更実施することが可能である。使い捨ておむつ分野において公知の各種部材をさらに付加してもよい。   The present invention is not limited to the form and configuration of the disposable pants-type diapers 1 and 21 shown in the drawings, and can be appropriately modified. Various members known in the field of disposable diapers may be further added.

本発明の使い捨てパンツ型おむつは、着用者の脚周り周囲に当接する部位にボリューム感のある嵩高不織布を配設しているので、着用者に対し、漏れ易いという不安感を抱かせることがなくなった。本発明の使い捨てパンツ型おむつは、大人用、子供用、乳幼児用の使い捨てのおむつとして好適に利用することができる。   Since the disposable pants-type diaper of the present invention has a bulky nonwoven fabric with a sense of volume at the portion that contacts the circumference of the wearer's leg, the wearer does not feel uneasy about leaking easily. It was. The disposable pants-type diaper of the present invention can be suitably used as a disposable diaper for adults, children, and infants.

本発明の使い捨てパンツ型おむつの正面図である。It is a front view of the disposable underpants type diaper of the present invention. 図１に示した使い捨てパンツ型おむつの一部切欠き展開図である。FIG. 2 is a partially cutout development view of the disposable pants-type diaper shown in FIG. 1. （ａ）は図２のＡ−Ａ線断面図、（ｂ）はＢ−Ｂ線断面図である。(A) is the sectional view on the AA line of FIG. 2, (b) is the sectional view on the BB line. 外装パンツ部材の展開図である。It is an expanded view of exterior pants member. 異形断面繊維の断面模式図である。It is a cross-sectional schematic diagram of an irregular cross-section fiber. 本発明の他の使い捨てパンツ型おむつの正面図である。It is a front view of the other disposable pants type diaper of this invention. （ａ）は図６に示した使い捨てパンツ型おむつの展開図、（ｂ）は（ａ）のおむつの外装パンツ部材の展開図である。(A) is an expanded view of the disposable pants type diaper shown in FIG. 6, (b) is an expanded view of the exterior pants member of the diaper of (a). （ａ）は図７（ａ）のＡ−Ａ線断面図、（ｂ）はＢ−Ｂ線断面図である。(A) is the sectional view on the AA line of Fig.7 (a), (b) is sectional drawing on the BB line.

符号の説明Explanation of symbols

１，２１ 使い捨てパンツ型おむつ
２，２２ 外装パンツ部材
３，２３ 吸収性本体
４，２４ 内側シート
５，２５ 外側シート
６，２６ ウエスト用弾性部材
７ 胴部用弾性部材
８ 脚部用弾性部材
１１，３１ トップシート
１２，３２ トップシート
１３，３３ 吸液性コア
１６ 脚穴部側縁
２２ｂ 直線状前縁部
２２ｃ 外方膨らみ状後縁部
２２ｄ 括れ状縁部
３４ サイドシート
Ｐ 前腹部
Ｑ 後背部
Ｒ 股部
Ｓ 脚穴部
Ｗ おむつ幅方向
Ｘ おむつ前後方向 DESCRIPTION OF SYMBOLS 1,21 Disposable pants type diaper 2,22 Exterior pants member 3,23 Absorbent main body 4,24 Inner sheet 5,25 Outer sheet 6,26 Elastic member for waist 7 Elastic member for trunk 8 Elastic member for leg 11 31 Top sheet 12, 32 Top sheet 13, 33 Liquid absorbing core 16 Leg hole side edge 22b Linear front edge 22c Outwardly bulging rear edge 22d Constricted edge 34 Side sheet P Front abdomen Q Rear back R Crotch S Leg hole W Diaper width direction X Diaper front and back direction

Claims (5)

前腹部と後背部と両者の間の股部とからなり、前記股部の両側に脚穴部が形成された外装パンツ部材と、この外装パンツ部材の股部内側に設けられて、おむつ前後方向に延在する吸収性本体とで構成されている使い捨てパンツ型おむつにおいて、
上記外装パンツ部材は、外側シートと内側シートとを構成素材として有していて、上記外装パンツ部材の股部は、上記吸収性本体よりも狭幅に形成されており、且つ、この内側シートの少なくとも脚穴部周囲は、捲縮繊維を含む不織布で形成されており、
上記吸収性本体は、トップシートとバックシートとの間に吸収性コアを有すると共に、上記吸収性本体の両側に、延出部と立体部とを形成するサイドシートを有しており、上記延出部は、上記外装パンツ部材の股部幅方向端部よりも外方に位置しており、
上記サイドシートの少なくとも延出部が、捲縮繊維を含む不織布で形成されており、且つ、当該延出部には弾性部材が設けられていることを特徴とする使い捨てパンツ型おむつ。 An outer pants member comprising a front abdomen, a rear portion, and a crotch portion between the two, and a leg hole portion formed on both sides of the crotch portion; In a disposable pants-type diaper composed of an absorbent main body extending to
The exterior pant member has an outer sheet and an inner sheet as constituent materials, and the crotch portion of the exterior pant member is formed narrower than the absorbent main body, and the inner sheet At least the periphery of the leg hole is formed of a nonwoven fabric containing crimped fibers,
The absorbent body, which has an absorbent core between the topsheet and the backsheet, on both sides of the absorbent body has a side sheet to form the extending portion and the solid portion, the extension The projecting part is located outside the crotch width direction end of the exterior pants member,
A disposable pants-type diaper, wherein at least the extension part of the side sheet is formed of a nonwoven fabric containing crimped fibers, and the extension part is provided with an elastic member. 上記捲縮繊維を含む不織布が、捲縮繊維からなるスパンボンド不織布である請求項１に記載の使い捨てパンツ型おむつ。   The disposable pants-type diaper according to claim 1, wherein the nonwoven fabric containing the crimped fibers is a spunbond nonwoven fabric made of crimped fibers. 上記サイドシート全体が、捲縮繊維からなるスパンボンド不織布で形成されている請求項１または２に記載の使い捨てパンツ型おむつ。   The disposable pants-type diaper according to claim 1 or 2, wherein the entire side sheet is formed of a spunbonded nonwoven fabric made of crimped fibers. 上記捲縮繊維が異形断面繊維である請求項１〜３のいずれかに記載の使い捨てパンツ型おむつ。   The disposable pants-type diaper according to any one of claims 1 to 3, wherein the crimped fiber is a modified cross-section fiber. 上記吸収性本体の前後方向端部が、上記内側シートと、前押さえシートと後押さえシートとの間に挟まれているものである請求項１〜４のいずれかに記載の使い捨てパンツ型おむつ。   The disposable pants-type diaper according to any one of claims 1 to 4, wherein an end portion in the front-rear direction of the absorbent main body is sandwiched between the inner sheet, the front pressing sheet, and the rear pressing sheet.
JP2007327747A 2007-12-19 2007-12-19 Disposable pants-type diapers Expired - Fee Related JP4966841B2 (en)

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