JP2010136789A

JP2010136789A - Wearing article

Info

Publication number: JP2010136789A
Application number: JP2008314009A
Authority: JP
Inventors: Toshiaki Ichimada; 俊明一萬田
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2008-12-10
Filing date: 2008-12-10
Publication date: 2010-06-24
Anticipated expiration: 2028-12-10
Also published as: JP5147665B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wearing article having uniform fitting property around circumferences of the legs and suppressing or preventing marks of gathers on local parts of the skin of a wearer, slipping down of a diaper and leakage of excrement wherein such properties are achieved by making parts of the wearing article around the circumferences of the legs conform to the figure of the wearer while focusing attention on the figure of the wearer of a diaper or the like, namely to a difference in roundness of the skin surface of the leg circumferences between the abdominal side and the back side, and also to provide a method for producing the same. <P>SOLUTION: Elastic extendable band materials are arranged on an article body so that their longitudinal direction strides across a crotch center line dividing the article body in two parts in the longitudinal direction. An effective extendable width of a band material abdominal part located on the abdominal side with respect to the crotch center line is smaller than that of a band material back part located on the back side. The elastic extendable band material is incorporated in the article body under an unfolded condition by pulling the longitudinal direction of the band material in the longitudinal direction of the wearing article in such a way that an extension amount of the band material abdominal part is larger than that of the band material back part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、使い捨ておむつやおむつカバー等の着用物品に関する。 The present invention relates to wearing articles such as disposable diapers and diaper covers.

使い捨ておむつや吸収性本体を内側に沿わせこれを覆うようにして着用するおむつカバーにおいて、着用者の股間に対応するレッグ開口部ないし胴周りに対応するウエスト開口部の周辺に、弾性伸縮部材を組み込んだものがある。典型的なものとしては、上記レッグ開口部ないしウエスト開口部の周縁に輪をなすよう、あるいはその一部をなすように一条又は複数条の長尺の弾性伸縮部材が取り付けられたものである。このようにすることで、おむつ等の腹周りや脚ぐりにおいて着用者のからだを締め付けてそのズレや形くずれを防ぎ、また股間や背中からの汚物の漏れを抑えることができる。 In a disposable diaper or a diaper cover that is worn so as to cover an absorbent main body along the inside, an elastic elastic member is provided around a leg opening corresponding to the crotch of the wearer or a waist opening corresponding to the waist. Some are built in. As a typical example, one or a plurality of long elastic elastic members are attached so as to form a ring around the leg opening or the waist opening or to form a part thereof. By doing so, the body of the wearer can be tightened around the belly and under the legs of diapers and the like to prevent the displacement and deformation, and the leakage of filth from the crotch and back can be suppressed.

パンツ型のおむつのレッグ開口部の付近に上記のような弾性伸縮部材を配設したものとして、レッグ開口部の周縁前部と周縁後部に区分して２つの弾性伸縮部材を取り付け、上記周縁前部と周縁後部の間の股下直下に弾性伸縮部材のない領域を広く確保した使い捨ておむつが開示されている（特許文献１参照）。これにより、着用者がおむつを穿くために脚をおむつのレッグ開口部に通すときに、その脚先がおむつ内部の防漏カフなどに引掛かかることをなくし、穿きやすくすることができるとされる。このような点は特に成人用のおむつとして効果的であり、たとえばおむつを自分で穿くことができる、あるいはそのトレーニングが必要な要介護者等がおむつを穿くときの転倒をふせぐことができる。 Assuming that the elastic elastic member as described above is disposed in the vicinity of the leg opening of the pant-type diaper, two elastic elastic members are attached to the front edge and the rear edge of the leg opening. A disposable diaper is disclosed in which a region without an elastic elastic member is secured widely just below the crotch between the portion and the peripheral rear portion (see Patent Document 1). Accordingly, when the wearer passes the leg through the leg opening of the diaper in order to wear the diaper, the leg tip is not caught on the leak-proof cuff inside the diaper, and the wearer can easily wear it. . Such a point is particularly effective as a diaper for adults. For example, the diaper can be worn by itself, or the fall of a care recipient who needs training can wear the diaper.

このほか、展開型のおむつにおいてレッグ開口部をなす周縁部分に３つの異なる引張応力を有する弾性伸縮部材を直列に連設して適用したものが開示されている（特許文献２参照）。具体的には、展開したおむつの長手方向の中間になる部分の周辺に第１弾性伸縮部材を配置し、その前後両側の腹側と背側とにそれぞれ第２弾性伸縮部材と第３弾性伸縮部材とが配置されている。そして、上記各弾性伸縮部材の引張応力を異にし、股下直下に配置される第１弾性伸縮部材においてこれを最大にすることにより、弾性伸縮部材による圧迫跡が付き難くかつ排泄物の漏れを防ぐことができるとされる。 In addition, an unfolded diaper is disclosed in which three elastic elastic members having different tensile stresses are connected in series to a peripheral edge portion forming a leg opening (see Patent Document 2). Specifically, the first elastic stretchable member is disposed around the middle part of the developed diaper in the longitudinal direction, and the second elastic stretchable member and the third elastic stretchable member are respectively provided on the front and back sides of the belly side and the back side. Members are arranged. Then, by making the tensile stresses of the elastic elastic members different from each other and maximizing this in the first elastic elastic member arranged just below the crotch, it is difficult to attach a compression mark by the elastic elastic member and prevent excrement leakage. It is said that you can.

特開２００１−３７８０７号公報JP 2001-37807 A 特開２００２−６５７３２号公報JP 2002-65732 A

ところで、おむつ等の着用物品が装着される部分の着用者の体形は単調ではなく、とくに幼児の体型にあっては腹側よりも臀部側の方が下方に向け張り出して膨らんでいる。図９は乳幼児のからだを横から見た部分斜視図である。同図においては、新生児が脚を蛙のようにした状態（フロッグ・レッグ・ポジション）において典型的である、やや大腿部を前に突き出したときの体形として示している。図示した乳幼児９０のからだでみて、おむつ等のレッグ開口部の周縁は、その前側部分である股下前部Ｃｆ（図２参照）の縁が股間９７において股下直下ｊから腹部９２に向けて「Ｖ」字状に延びるやや溝状の腿の付根にそった股間線ｐ_１に沿うよう配置され概ね円弧状になって沿わされる。その後側部分である股下後部Ｃｒ（図２参照）は臀部９６のなかでやや外方のおしり稜線ｐ_２に即して概ね円弧状になって沿わされる（おむつの着用時の形状については図１参照）。この股下部分には排尿ポイント９５および排便ポイント９４があり言うまでもないが排泄物の吸収保持にとてって重要な部分である。 By the way, the body shape of the wearer at the portion where the wearing article such as a diaper is mounted is not monotonous, and particularly in the body shape of the infant, the buttock side projects downward and swells more than the abdomen side. FIG. 9 is a partial perspective view of the infant's body as seen from the side. In the figure, it is shown as a body shape when the thigh is protruded forward, which is typical in a state where a newborn has a leg like a heel (frog leg position). As shown in the figure of the infant 90, the periphery of the leg opening of a diaper or the like is such that the edge of the front crotch portion Cf (see FIG. 2), which is the front side thereof, is located at the crotch 97 from directly under the crotch j toward the abdomen 92. arranged "shape extending slightly grooved thigh as along the crotch line p ₁ along the root is generally along with an arc shape. Figure The shape generally is along in an arc shape (when worn the diaper in line slightly posterior ridge p ₂ of the outer among crotch rear Cr (see FIG. 2) is buttocks 96 is then side portion 1). Needless to say, there are a urination point 95 and a defecation point 94 in the crotch portion, which are important for absorption and retention of excrement.

ところで、おむつ着用時にレッグ開口部の脚周りギャザーがあたる部分は後部側と前部側とでからだのかたちが異なり、具体的に股間線ｐ_１のあたりのからだのまるみ（曲率半径Ｒ_１）と、おしりの稜線ｐ_２付近のからだのまるみ（曲率半径Ｒ_２）とは異なる。特に腹側の股間線ｐ_１はおしりの肌面に比しやや起伏があり、特に排尿ポイント９５に対応する股関節位置には大きな靭帯があるなど、その程度は着用者の性別や乳幼児の年齢（月齢）にもよるが、この部分がやや突出した曲率半径の小さい輪郭形状になる（曲率半径Ｒ_１＜曲率半径Ｒ_２）。 By the way, when the diaper is worn, the part of the leg opening where the leg circumference gathers is different in the shape of the body on the rear side and the front side, and specifically, the rounded body (curvature radius R ₁ ) around the crotch line p ₁ This is different from the rounded body (curvature radius R ₂ ) in the vicinity of the ridgeline p _{2 of} the buttocks. In particular, the ventral crotch line p ₁ is slightly undulated compared to the skin surface of the buttocks, and in particular, there is a large ligament in the hip joint position corresponding to the urination point 95, such as the gender of the wearer and the age of the infant ( Although it depends on the age of the moon, this portion has a slightly protruding contour shape with a small curvature radius (curvature radius R ₁ <curvature radius R ₂ ).

したがって、一般のおむつのように脚周り弾性伸縮部材を前後方向にわたって一様な状態で配設したものでは、脚周りギャザーの後ろは弾性体の締め付けが強く、一方、前側は締め付けがゆるくなってしまいがちである。そのため、後ろ側部分でのギャザーの跡付きや、肌へのくい込み、ずり落ちが生じやすい。前側部分に関しては、特に脚周りが小さめの乳幼児などでギャザーの収縮が足りず、この部分にできた隙間によるモレが懸念される。これに対し、上記特許文献１のものは、そもそも排泄物の吸収保持との関係で重要となる股下直下の周辺部分に弾性伸縮部材がない。特許文献２のおむつは、曲率半径の必ずしも大きくない股下直下部分で弾性伸縮部材の引張応力を最も高めており、この部分で局所的に肌への締め付けが強くなれば跡付きなどの心配が生じる。また、上記特許文献のいずれも、脚周りギャザーに適用する弾性体の引張応力を区分ごとに変化させることを開示するにとどまり、弾性伸縮部材の伸張量ないしおむつに組み込まれたときの収縮状態については言及されていない。 Therefore, in the case where elastic elastic members around the legs are arranged in a uniform state in the front-rear direction like a general diaper, the elastic body is strongly tightened behind the gathers around the legs, while the tightening is loose on the front side. It tends to end up. For this reason, there is a tendency for gather marks on the back side, biting into the skin, and slipping off. With regard to the front portion, particularly in infants with smaller legs, the gathers are not sufficiently contracted, and there is a concern about leakage due to gaps formed in this portion. On the other hand, the thing of the said patent document 1 does not have an elastic expansion-contraction member in the peripheral part just under a crotch important in relation to the absorption holding | maintenance of excretion in the first place. In the diaper of Patent Document 2, the tensile stress of the elastic elastic member is maximized at the portion directly below the crotch where the radius of curvature is not necessarily large. . In addition, all of the above-mentioned patent documents only disclose that the tensile stress of the elastic body applied to the gathers around the legs is changed for each section, and the contraction state when the elastic stretch member is incorporated into the diaper. Is not mentioned.

本発明は、上記のようにおむつ等の着用者の体形をみると脚周りの腹側と背側とで肌面のまるみに差があることに着目し、この部分の着用者のからだのかたちに適合するようにして、脚周りに均一なフィット性を付与し、着用者の肌面に対する局部的なギャザーの跡付きや、おむつのずり落ち、排泄物のモレを抑制ないし防止する着用物品及びこの製造方法の提供を目的とする。 The present invention pays attention to the fact that there is a difference in the roundness of the skin surface between the abdominal side and the back side around the legs when looking at the wearer's body shape such as diapers as described above, and the body shape of the wearer of this part Wearing articles that provide uniform fit around the legs, and suppress or prevent localized gather marks on the wearer's skin, diaper slipping, and excretion leakage. An object is to provide this manufacturing method.

本発明の上記の目的は、腹側部分と背側部分と該両部分の中間に配置された股下部分とを長手方向にもつ物品本体に、この幅方向の左右両側であって前記股下部分にあたる位置に前記物品本体の長手方向に延びる一対の弾性伸縮帯材が配設された着用物品であって、該弾性伸縮帯材は、その長手方向が前記物品本体を長手方向に二分する股下中間線を跨ぐように配置されており、かつ、前記股下中間線より腹側の帯材腹側部分における下記有効伸縮幅がその背側の帯材背側部分における下記有効伸縮幅より小さく、前記弾性伸縮帯材は、その長手方向が着用物品の長手方向にそって引張され、その帯材腹側部分の伸張量が帯材背側部分の伸張量より大きくなるようにされて、展張状態の前記物品本体に組み込まれてなる着用物品［有効伸縮幅（Ｗ）：物品本体に組み込む前の自然形状の弾性伸縮帯材において、物品本体に組み込まれた後に伸縮に関与しうる領域の所定の部分の平面視における面積（Ｓ）を、該弾性伸縮帯材を引張する方向の前記帯材所定部分の長さ（Ｌ）で除した値。］によって達成される。 The above object of the present invention corresponds to an article body having a ventral part, a dorsal part, and a crotch part arranged in the middle of the two parts in the longitudinal direction, corresponding to the crotch part on both the left and right sides in the width direction. A crotch intermediate line in which a pair of elastic elastic band members extending in the longitudinal direction of the article main body is disposed at a position, and the elastic elastic band member bisects the article main body in the longitudinal direction. The elastic expansion and contraction is less than the effective expansion and contraction width below in the back side of the band material on the back side of the belt material on the ventral side of the crotch middle line. The strip is stretched so that the longitudinal direction of the strip is pulled along the longitudinal direction of the wearing article, and the stretch amount of the strip material abdomen is larger than the stretch amount of the strip back portion. Wearable articles incorporated in the main body [effective stretch width W): In the elastic elastic band having a natural shape before being incorporated into the article main body, the area (S) in a plan view of a predetermined portion of the region that can be involved in the expansion / contraction after being incorporated into the article main body is represented by the elastic elastic band material. Divided by the length (L) of the predetermined portion of the strip in the direction of pulling. ] Is achieved.

また上記の着用物品は、腹側部分と背側部分と該両部分の中間に配置された股下部分とを長手方向にもつ物品本体に、この幅方向の左右両側であって前記股下部分にあたる位置に前記物品本体の長手方向に延びる一対の弾性伸縮帯材が配設された着用物品を製造する方法であって、連続弾性伸縮帯材を未伸張状態で所定の形状に切り欠く工程、前記切り欠きのある連続弾性伸縮帯材を一様な張力で長手方向に引張する工程、前記連続弾性伸縮帯材の伸張状態を保持したままこれを長手方向の所定長さに切断し伸張状態の弾性伸縮帯材とする工程、及び、前記弾性伸縮帯材の伸張状態を保持しながらこれを物品本体を構成するシート部材に取り付ける工程を有する着用物品の製造方法。によって好適に製造される。 In addition, the above-mentioned wearing article is an article main body having in the longitudinal direction an abdominal part, a dorsal part, and a crotch part arranged between the two parts, and a position corresponding to the crotch part on both the left and right sides in the width direction. A method of manufacturing a wearing article provided with a pair of elastic elastic band members extending in the longitudinal direction of the article main body, the step of cutting the continuous elastic elastic band material into a predetermined shape in an unstretched state, A step of pulling a continuous elastic stretch band material having a notch in the longitudinal direction with a uniform tension, and maintaining the stretched state of the continuous elastic stretch band material by cutting it into a predetermined length in the longitudinal direction. The manufacturing method of the wearing article which has the process which attaches this to the sheet | seat member which comprises this article main body, maintaining the expansion | extension state of the said elastic elastic band material, and the process made into a strip | belt material. It is suitably manufactured by.

本発明の着用物品は、着用者の脚周りのからだのかたちに適合するようにして均一なフィット性を付与し、着用者の肌面に対する局部的なギャザーの跡付きや、おむつのずり落ち、この部分からの排泄物のモレを抑制ないし防止するという優れた作用効果を奏する。
また、本発明の製造方法によれば、上記着用物品を、安定した品質で高速に生産することができ、工業的な大量生産にも好適に対応することができる。 The wearing article of the present invention provides a uniform fit so as to conform to the shape of the body around the wearer's leg, with traces of local gathers on the wearer's skin surface, and diaper slipping, There is an excellent effect of suppressing or preventing the excretion of excrement from this portion.
Moreover, according to the manufacturing method of this invention, the said wearing article can be manufactured at high speed with stable quality, and it can respond suitably also to industrial mass production.

以下、本発明の着用物品について図面を参照しながら説明する。
図１は、本発明の好ましい実施形態である乳幼児用の展開型使い捨ておむつ（実施形態１）を、概ね着用したときの形態で模式的に示した斜視図である。図２は本実施形態１の使い捨ておむつを展開した状態で表面シート（着用者の肌面側のシート）側からみた平面図である。図３は図２のIII−III線断面の拡大断面図である。 Hereinafter, the wearing article of the present invention will be described with reference to the drawings.
FIG. 1: is the perspective view which showed typically the expansion | deployment type disposable diaper for infants (Embodiment 1) which is preferable embodiment of this invention with the form when generally worn. FIG. 2: is the top view seen from the surface sheet (sheet | seat of a wearer's skin side) side in the state which expand | deployed the disposable diaper of this Embodiment 1. FIG. FIG. 3 is an enlarged cross-sectional view taken along line III-III in FIG.

本実施形態の使い捨ておむつ１０は装着形状において、おむつ腹側部分Ｆと背側部分Ｒとが一体となって胴周り部Ｄをなす。その左右両側の下方には上記レッグ開口部Ｌｏがあり、その間において着用者の股間直下ｊを介して上記腹側部分Ｆから背側部分Ｒへとつながる股下部分Ｃがある。上記のおむつ腹側部分Ｆと背側部分Ｒないしこれらがなす胴周り部分Ｄと股下部分Ｃとは分割基線ｋ_１、ｋ_３において機能的に区分して示しているが、この位置は特に限定されない。 The disposable diaper 10 of the present embodiment has a waist shape portion D in which the diaper belly side portion F and the back side portion R are integrated with each other in the wearing shape. Below the left and right sides, there is the leg opening Lo, and there is a crotch portion C between the abdomen portion F and the back portion R via the wearer's crotch j. The diaper belly side portion F and the back side portion R or the waistline portion D and the crotch portion C formed by these are shown functionally separated on the divided base lines k ₁ and k ₃ , but this position is particularly limited. Not.

本実施形態１の展開型おむつ１０には、左右２つが一対となった面状のファスニングテープ６が、おむつ本体１１のサイドフラップＳｒに取り付けられている。乳幼児等に着用させるときには、この背側部分Ｒを着用者の背側に配し、さらに、おむつ股下部分Ｃが股間に沿うように渡し、腹側部分Ｆを着用者の下腹部にあてる。このとき、おむつ背側部分ＲのサイドフラップＳｒを背中の方から腹側に渡し、背側サイドフラップＳｒで腹側部分ＦのサイドフラップＳｆを覆うようにする。そして、ファスニングテープ６をランディングテープ（ファスナー受け部）７に圧し付けると、ファスニングテープ１に設けられた面状ファスナー６２の鉤状ないしフック上の突起がランディングテープ７の表面と機械的に接合して係着する。このようにして、パンツ型にされたおむつのウエスト開口部Ｗｏに着用者の胴まわりをとおし、一対のレッグ開口部Ｌｏに腿をとおして着用する。 In the unfolded diaper 10 according to the first embodiment, a planar fastening tape 6 having a pair of right and left is attached to a side flap Sr of a diaper main body 11. When the baby is to be worn by an infant or the like, the back portion R is placed on the back side of the wearer, and the diaper crotch portion C is passed along the crotch, and the ventral portion F is applied to the lower abdomen of the wearer. At this time, the side flap Sr of the diaper back side portion R is passed from the back to the abdomen, and the back side flap Sr covers the side flap Sf of the abdominal side portion F. When the fastening tape 6 is pressed against the landing tape (fastener receiving portion) 7, the hooks or protrusions on the hook of the planar fastener 62 provided on the fastening tape 1 are mechanically joined to the surface of the landing tape 7. I will be engaged. In this way, the pants-shaped diaper waist opening Wo is passed through the wearer's waist, and the pair of leg openings Lo are worn through the thighs.

おむつの使用後には、逆にファスニングテープ６をランディングテープ７から引き剥がし、後部のサイドフラップＳｒを観音開きにして展開し、乳幼児等からだから脱がせることができる。なお、前記サイドフラップは本実施形態のように前記腹側部分Fあるいは前記背側部分Ｒの一部として一体に構成されていても、別部材としてもよい。 After using the diaper, the fastening tape 6 can be peeled off from the landing tape 7, and the rear side flap Sr can be opened with the double doors open, so that it can be removed from an infant or the like. The side flaps may be integrally configured as a part of the ventral portion F or the back portion R as in this embodiment, or may be separate members.

本実施形態の展開型おむつ１０は、液透過性の表面シート１、液不透過性の裏面シート２及び両シート１，２間に介在された液保持性の吸収体４を有する。ここで、表面シート１側が着用者の肌に当たる側であり、裏面シート２側が着用したときの外面側となる。さらに、おむつの肌側面であって幅方向の両側にはサイドシート３が配設されており、上記表面シート１、裏面シート２、サイドシート３、及び吸収体４からなり、おむつの骨格をなすおむつ本体１１を構成している。このおむつ本体１１は全体の展開形状として、図示するような実質的に縦長の砂時計形状、すなわち、その長手方向の両端部（腹側部分Ｆ，背側部分Ｒ）が幅広にされ、股下部分Ｃが括れる形状とされている。本実施形態１においておむつ本体１１の背側部分Ｆには、上述した一対のファスニングテープ６が組み入れられている。また、裏面シート２は内層の多孔性フィルム２ａと外層の不織布からなる外装材２ｂとからなる（図３参照）。 The deployable diaper 10 of the present embodiment includes a liquid-permeable top sheet 1, a liquid-impermeable back sheet 2, and a liquid-retaining absorbent body 4 interposed between both sheets 1 and 2. Here, the top sheet 1 side is the side that contacts the wearer's skin, and the back sheet 2 side is the outer surface side when worn. Further, side sheets 3 are disposed on the skin side of the diaper and on both sides in the width direction. The side sheet 3 includes the top sheet 1, the back sheet 2, the side sheet 3, and the absorber 4, and forms a diaper skeleton. The diaper main body 11 is comprised. This diaper main body 11 has a substantially vertically long hourglass shape as shown in the figure, that is, its both longitudinal ends (abdominal side portion F, back side portion R) are widened, and a crotch portion C is shown. It is a shape that can be wrapped. In the first embodiment, the pair of fastening tapes 6 described above is incorporated in the back portion F of the diaper main body 11. The back sheet 2 is composed of an inner layer porous film 2a and an outer layer outer packaging material 2b (see FIG. 3).

図２，３に示すように、使い捨ておむつ１０には、吸収体４における幅方向の両側部からおむつ本体の幅方向両側縁１１ａにかけて、物品長手方向に延びる、一対のサイドシート３が配設されている。このサイドシート３は基底線ｇ_ｉの外方になる領域において表面シート１、裏面シート２、及びファスニングテープ６の基材シート６１の一部に接着されている。他方、サイドシート３の基底線ｇ_ｉより物品本体の内方においては表面シートに対して非接着の状態とされている。そして、このサイドシートとの内方で非接着とされた自由端ｇ_ｊの近傍で、おむつ長手方向の広い領域にわたって、糸状ないし細紐状の弾性伸縮部材９が組み込まれている。 As shown in FIGS. 2 and 3, the disposable diaper 10 is provided with a pair of side sheets 3 extending in the longitudinal direction of the article from both side portions in the width direction of the absorbent body 4 to both side edges 11 a in the width direction of the diaper body. ing. The side sheet 3 is bonded to a part of the baseline g topsheet 1 in the region to become the outside of _i, the backsheet 2 and the base sheet 61 of the fastening tape 6. On the other hand, there is a non-adhesive state to the surface sheet in the inside of the article body from baseline g _i of the side sheet 3. In addition, a thread-like or string-like elastic elastic member 9 is incorporated over a wide region in the longitudinal direction of the diaper in the vicinity of the free end g _j that is not adhered to the inside of the side sheet.

このようにサイドシート３と弾性伸縮部材９との複合構造とすることにより、自然形状ないし着用時の形状にしたときに、おむつ本体が長手方向にそって表面シート側に全体的に凹となるように緩やかに湾曲すると、上記サイドシートの自由端ｇ_ｊ側が起立して防漏カフとなる起立ギャザー部Ｇ_２をなす（図１参照。図１は装着時のおむつの形状を示しており、このとき起立ギャザー部Ｇ_２の部分は着用者の肌面に押され潰されるが、同図では理解のため起立した状態で示している。）。このように弾性伸縮部材とシート材との複合部材において、弾性伸縮部材の収縮にあわせてシート部材に皺ないし襞（ギャザー）が形成されながら複合部材全体としての長さが減少する部材部分を「ギャザー部」という。本実施形態においては、上記吸収体の両側で起立して防漏カフをなす起立ギャザー部Ｇ_２と、その幅方向外方でレッグ開口部の周縁部に配置された後述するレッグギャザー部Ｇ_１とがある。この他、ウエスト開口部の周縁に弾性伸縮部材を組み込んでエストギャザー部を構成したり、ファスニングテープの止着性及びサイドフラップの部分での柔軟性を高めるためにフィット性のギャザー部を構成したりしてもよい。 Thus, by setting it as the natural shape thru | or the shape at the time of wearing by setting it as the composite structure of the side seat | sheet 3 and the elastic elastic member 9, a diaper main body becomes a concave generally on the surface sheet side along a longitudinal direction. When gently curved to said free end g _j of the side sheet forms a standing gather part G ₂ as the leak-barrier cuffs are erected (see Figure 1. Figure 1 shows the shape of the diaper when worn, this time portion of the standing gather part G ₂ is crushed pushed to the skin surface of the wearer, in the figure shows a state in which standing for understanding.). In this way, in the composite member of the elastic stretchable member and the sheet material, a member portion whose length as the entire composite member is reduced while a wrinkle or a gather (gather) is formed on the sheet member in accordance with the shrinkage of the elastic stretchable member. It is called "gather part". In the present embodiment, a leg gather section G ₁ to the standing gather part G ₂ forming the leak-barrier cuffs are erected at both sides of the absorbent body will be described later are disposed on the periphery of the leg openings in the width direction outward There is. In addition, an elastic stretch member is incorporated in the periphery of the waist opening to form an est gathered portion, or a fitting gathered portion is formed to increase fastening tape fastening and side flap flexibility. Or you may.

表面シート１は、液透過性であり肌への当りのソフトな材料からなることが好ましい。例えばコットン等の天然繊維を材料とする不織布や、各種合成繊維に親水化処理を施したものを材料とする不織布を用いることができる。裏面シート２を構成する多孔性シートは液不透過性のものであることが好ましい。具体的に十分な水蒸気透過性を得るために、炭酸カルシウム等のフィラーからなる微粉を分散させたポリエチレン等の合成樹脂製のフィルムを延伸し、微細な孔をあけた多孔質フィルムを用いることが好ましい。サイドシート３としては、不織布、フィルムシート、紙等が挙げられる。防漏性の観点からは、サイドシートを液不透過性又は難透過性である疎水性不織布、防漏性のフィルムシート等により形成することが好ましい。上記シートは一枚でもよいし、さらに機能性のシート等と組み合わせて２枚以上のものとしてもよい。吸収体４の形成材料としては、通常吸収性物品に用いられるものを用いることができる。具体的には例えば、繊維集合体又はこれと高分子吸水ポリマーとを併用させたもの等を用いることができる。繊維集合体を構成する繊維としては、パルプ繊維等の親水性天然繊維や、合成繊維（好ましくは親水化処理を施したもの）等を用いることができる。吸収体４は台紙となる繊維シート等で包み込むようにしてもよい。起立ギャザー部を構成するためにサイドシートに組み込まれる長尺弾性部材９は、どのような材料のもので形成してもよいが、後述する弾性伸縮帯材について列挙した材料を好適に用いることができる。 The top sheet 1 is preferably made of a soft material that is liquid-permeable and hits the skin. For example, a non-woven fabric made of natural fibers such as cotton or a non-woven fabric made of various synthetic fibers subjected to hydrophilic treatment can be used. The porous sheet constituting the back sheet 2 is preferably liquid-impermeable. Specifically, in order to obtain sufficient water vapor permeability, a film made of synthetic resin such as polyethylene in which fine powder made of a filler such as calcium carbonate is dispersed is stretched and a porous film having fine holes is used. preferable. Examples of the side sheet 3 include a nonwoven fabric, a film sheet, and paper. From the viewpoint of leakage prevention, it is preferable that the side sheet is formed of a liquid non-permeable or hardly permeable hydrophobic nonwoven fabric, a leak-proof film sheet, or the like. One sheet may be used, or two or more sheets may be combined with a functional sheet. As a material for forming the absorbent body 4, those normally used for absorbent articles can be used. Specifically, for example, a fiber aggregate or a combination of this and a polymer water-absorbing polymer can be used. As the fibers constituting the fiber assembly, hydrophilic natural fibers such as pulp fibers, synthetic fibers (preferably subjected to hydrophilic treatment), and the like can be used. The absorber 4 may be wrapped with a fiber sheet or the like serving as a mount. The long elastic member 9 incorporated in the side sheet to constitute the standing gathers may be formed of any material, but preferably use the materials listed for the elastic stretch band material described later. it can.

上記のおむつ本体１１を構成する表面シート１、裏面シート２、サイドシート３、及び吸収体４の接合方法は特に限定されないが、例えば、面状、線状ないし散点状に塗付したホットメルトにより接着する方法や、それらの要所を熱エンボス加工によりシールする方法が挙げられる。 The method for joining the top sheet 1, the back sheet 2, the side sheet 3, and the absorbent body 4 constituting the diaper main body 11 is not particularly limited. For example, hot melt applied in a planar shape, a linear shape, or a dotted shape And a method of sealing those points by hot embossing.

上述のような使い捨ておむつの基本構造はこの種のものに通常のものであり、本実施形態を変形して適宜一般的なおむつの構造とすることができ、例えば上記した各部材を分割したり、これら以外の機能性の部材やシート等を適宜組み合わせたりしてもよい。 The basic structure of the disposable diaper as described above is normal to this type, and this embodiment can be modified to a general diaper structure as appropriate. For example, the above-described members can be divided. Further, functional members and sheets other than these may be appropriately combined.

本実施形態の使い捨ておむつ１０においては、外形において短冊状の弾性伸縮性の部材であって、その長手方向の片側に偏在させた長方形の切り欠きが施された弾性伸縮帯材５が、おむつ本体１１を構成する表面シート１と裏面シート２との間に挟持し固定されている。上記弾性伸縮性帯材５は、おむつの左右両側の股下部分Ｃにおいて腹側部分Ｆから背側部分Ｒに向かう（あるいはその逆といってもよい。）物品長手方向に延びるように配設されており、その腹側の股下前部Ｃｆに切り欠き５１が位置するようにされている。 In the disposable diaper 10 of the present embodiment, the elastic elastic band member 5 which is a strip-like elastic stretchable member in the outer shape and is provided with a rectangular cutout unevenly distributed on one side in the longitudinal direction is a diaper main body. 11 is sandwiched and fixed between the top sheet 1 and the back sheet 2 constituting the head 11. The elastic stretchable strip 5 is disposed so as to extend in the longitudinal direction of the article from the abdominal part F to the back part R (or vice versa) in the crotch part C on both the left and right sides of the diaper. A notch 51 is positioned at the front crotch portion Cf on the ventral side.

本実施形態において、上記弾性伸縮帯材５はおむつ本体を長手方向に二分する股下中間線ｋ_２を跨ぐようにして配置されている（股間中間線ｋ_２および前記分割基線ｋ_１、ｋ_３は着用物品の各領域を区分して説明するための仮想線であり、物品の一部をなすものではない。）。この股下中間線ｋ_２は、本実施形態において具体的にいうと、展張状態のおむつ（図２参照）の長手方向の全長Ｔｄを前方長さＦｄと後方長さＲｄに２等分（Ｆｄ＝Ｒｄ）する位置として設定される（本発明において展張状態とは着用物品ないしその部材を展開して伸張した状態をいう。）。本実施形態のおむつ１０においては、上記のように特有の形態的特徴を有する弾性伸縮帯材５を、股下中間線ｋ_２を跨ぐ特定の位置に配置し、後述するように一様な力で引張しながら展張状態のおむつ本体に組み込んだため、着用者の股下の腿の付根からおしりにかけて広範にわたって、従来にないほどにピッタリとフィットし、肌への跡付きや型崩れをしにくい良好な着用感と、この部分での高い漏れ防止性とを両立して実現することができる。 In the present embodiment, the elastic elastic band member 5 is disposed so as to straddle the crotch intermediate line k ₂ that bisects the diaper body in the longitudinal direction (the crotch intermediate line k ₂ and the divided base lines k ₁ and k ₃ are This is a virtual line for categorizing and explaining each region of the worn article, and does not form a part of the article. The crotch median line k ₂ is Specifically in this embodiment, two equal parts in the longitudinal direction of the full-length Td forward length Fd and rear length Rd diaper stretched state (see FIG. 2) (Fd = Rd) is set as the position (in the present invention, the stretched state refers to a state where the worn article or its member is expanded and expanded). In the diaper 10 of the present embodiment, the elastic stretchable strip 5 with unique morphological features, as described above, arranged in a particular position across the crotch median line k _2, a uniform force as described below Since it is incorporated into the diaper body in a stretched state while pulling, it fits over a wide area from the root of the thigh of the wearer's inseam to the butt, and it fits better than ever, making it difficult to leave marks and lose shape A feeling of wearing and a high leakage prevention property at this part can be realized at the same time.

本実施形態において、弾性伸縮帯材５の両端部５ａはおむつ本体に組み込まれた後に伸縮性を実質的に滅失する状態で、たとえば裏面シート２ならびに表面シート１に接着固定されていない状態でおむつ本体に組み込まれている。また、幾分硬化されながら強固に裏面シート２及び／又は表面シート１側に接着固定されていてもよい（図２参照）。このときの接着加工法は特に限定されないが、例えば、弾性伸縮帯材５が表面シート１及び裏面シート２の内部に接着剤層を介して組み込まれた後に、これらの部材を併せて加熱押圧する加工法が挙げられる。一方、弾性伸縮帯材５の中央要部５ｂは伸縮可能に維持されており、着用中に接合状態が解かれない程度の強さで表面シート１及び裏面シート２に接着固定されている。このときの接着加工は、例えば、この種の製品に一般的に用いられる接着剤を弾性部材側またはシート材側に面状、線状、もしくは散点状に塗付して、軽く押圧して適度な接着状態を得ることができる。 In this embodiment, the both ends 5a of the elastic stretchable strip 5 are in a state where the stretchability is substantially lost after being incorporated into the diaper body, for example, in a state where the elastic stretchable strip 5 is not adhesively fixed to the backsheet 2 and the topsheet 1, for example. Built into the body. Further, it may be firmly fixed to the back sheet 2 and / or the top sheet 1 side while being cured somewhat (see FIG. 2). The adhesive processing method at this time is not particularly limited. For example, after the elastic stretchable band material 5 is incorporated into the top sheet 1 and the back sheet 2 via an adhesive layer, these members are heated and pressed together. A processing method is mentioned. On the other hand, the central main portion 5b of the elastic stretchable band material 5 is maintained so as to be stretchable, and is adhered and fixed to the topsheet 1 and the backsheet 2 with such a strength that the joined state is not unraveled during wearing. The bonding process at this time is, for example, by applying an adhesive generally used for this type of product to the elastic member side or the sheet material side in a planar shape, a linear shape, or a dotted shape, and lightly pressing it. An appropriate adhesion state can be obtained.

本実施形態においておむつ１０は、上述のように、その製造時に、上記の弾性伸縮帯材５が長手方向に一様に引帳され、図２に示したような展張したおむつ本体１１に組み込まれたようになるよう取り付けられている。このように一様な引張状態を得るために、本実施形態に採用されたような形状の弾性伸縮帯材５でいえばその両端部５ａを摘持し、中央要部５ｂは固定せずに自由に伸縮しうる状態とし、上記両端部５ａを離す方向に引っ張ることが挙げられる。このとき、弾性伸縮帯材５の要部前部５ｂ_ｆには切り欠き５１があるため、上記引張時に要部後部５ｂ_ｒより伸張量が大きくなる。この引張状態が維持されたまま、おむつ本体１１にその全面において接着固定して組み込まれる。これを脱力して自然形状にもどすと弾性伸縮帯材５が収縮し、これが配置された領域の表面シート１、裏面シート２、及び弾性伸縮部材５からなる複合部材部分が緩やかに面内の襞を形成しながら縮み、レッグギャザー部Ｇ_１を構成する。このとき、弾性伸縮帯材５の伸張量は相対的に要部前部５ｂ_ｆ側が大きくなり、したがって要部後部５ｂ_ｒ側よりも要部前部５ｂ_ｆ側がより大幅に収縮して襞の間隔の狭いギャザーをなす。 In the present embodiment, as described above, the diaper 10 is incorporated in the diaper main body 11 which is stretched as shown in FIG. It is attached so that it looks like. In order to obtain a uniform tensile state as described above, the elastic stretch band material 5 having a shape as employed in the present embodiment grips both end portions 5a without fixing the central main portion 5b. For example, pulling in a direction in which the both end portions 5a are separated can be mentioned. At this time, because of the cutout 51 in the main part front 5b _f of the elastic stretchable strip 5, the amount of extension from the main portion rear 5b _r when pulling the increases. While this tension state is maintained, the diaper main body 11 is incorporated and fixed on the entire surface thereof. When this is weakened and returned to its natural shape, the elastic stretchable band material 5 contracts, and the composite member portion consisting of the topsheet 1, the backsheet 2 and the elastic stretchable member 5 in the area where the elastic stretchable strip 5 is disposed is gently in-plane. shrinkage while forming, forming the leg gather section G _1. In this case, the interval of extension of the elastic stretchable strip 5 increases relatively main part front 5b _f side, thus essential front part 5b _f side of the main portion rear 5b _r side is more greatly contracted folds A narrow gathering.

このように、自然形状において収縮したときのおむつにおける弾性伸縮帯材５の要部前部５ｂ_ｆの収縮量は要部後部５ｂ_ｒのそれより大きくなり、伸張時の股下全部Ｃｆの長さ（Ｌｆ_ｆ）と股下後部Ｃｒの長さ（Ｌｒ_ｆ）とが等しいとしていえば、股下前部Ｃｆの自然形状長さ（Ｌｆ_ｎ）は股下後部Ｃｆの自然形状長さ（Ｌｒ_ｎ）よりも短くなる。その結果、おむつ中間線ｋ_２はおむつを装着したきの股下直下ｊ（図１参照）よりやや前方（腹側）に移行する。なお、弾性伸縮帯材５について図２では模式化して長方形の外形で長方形の切り欠きのものとして示しているが、実際には、たとえば図４（ｂ）に示したもののように長手方向の中央部分が細められややいびつになったり、また切り欠きが楕円形になったりする。 Thus, the amount of shrinkage of a main portion front 5b _f of resilient and elastic strips 5 in the diaper when contracted in natural shape is larger than that of the main portion rear 5b _r, the length of the elongation at the crotch all Cf ( Supposing that Lf _f ) is equal to the length (Lr _f ) of the crotch rear portion Cr, the natural shape length (Lf _n ) of the crotch front portion Cf is shorter than the natural shape length (Lr _n ) of the crotch rear portion Cf. Become. As a result, the diaper intermediate line k ₂ moves forward slightly from the crotch just below j Kino wearing the diaper (see Figure 1) (ventral). Note that the elastic elastic band member 5 is schematically shown in FIG. 2 as a rectangular cutout with a rectangular outer shape. However, in actuality, for example, as shown in FIG. The part is thinned and slightly distorted, and the notch becomes elliptical.

図４は本実施形態における弾性伸縮帯材５を伸張したときの寸法の変化をより具体化して説明するためにモデル化した平面図である。図４（ａ）はその伸張前の状態（帯材５Ｉ）を示し、図４（ｂ）は伸張後の状態（帯材５Ｆ）を示す。図４において弾性伸縮帯材５の両端５ａは伸縮不可能な状態に固定されている。他方、中央要部５ｂは非固定で伸縮自在な状態とされており、上記実施形態に対応していえば、おむつ本体に組み込む前の状態として示している。この両端部５ａを摘持しこの部分を引き離す方向に力ｎをかけて、おむつ中間線ｋ_２に対応する位置を動かさずに、引張したと想定すると、図４（ｂ）の引張後の帯材５Ｆのようになる。このとき、摘持された端部５ａの長手方向の長さは変わらないが、伸張前の帯材５Ｉの要部前部５ｂ_ｆの長手方向長さＬｆ_ｉは長さＬｆ_ｆに伸ばされ、要部後部５ｂ_ｒの長手方向長さＬｒ_ｉはＬｒ_ｆに伸ばされることとなる。 FIG. 4 is a plan view that is modeled in order to more specifically describe the change in dimensions when the elastic elastic band member 5 in the present embodiment is stretched. FIG. 4A shows a state before the extension (strip material 5I), and FIG. 4B shows a state after the extension (strip member 5F). In FIG. 4, both ends 5a of the elastic elastic band member 5 are fixed in a non-extensible state. On the other hand, the central main part 5b is in a non-fixed and expandable state, and is shown as a state before being incorporated into the diaper body if it corresponds to the above embodiment. Assuming that the _two ends 5a are gripped and a force n is applied in a direction to separate the two portions 5a and the position corresponding to the diaper intermediate line k2 is not moved, the tensioned band shown in FIG. It looks like material 5F. At this time, does not change the longitudinal length of the gripper to end 5a, the longitudinal length Lf _i of a main portion front 5b _f of strip 5I before stretching is stretched to a length Lf _f, longitudinal length Lr _i of a main portion rear 5b _r becomes be stretched Lr _f.

上記の伸びの長さ（伸張量）は、切り欠き５１があるために長手方向において均等ではなく要部後部５ｂ_ｒより要部前部５ｂ_ｆがより大幅に伸び、すなわち伸張量ΔＬｆ（Ｌｆ_ｆ−Ｌｆ_ｉ）は伸張量ΔＬｒ（Ｌｒ_ｆ−Ｌｒ_ｉ）より大きくなる（ΔＬｆ＞ΔＬｒ）。このことを、理想的な伸長性を示すとして、より寸法的に定量化して示すと下記のように説明することができる。伸張前の帯材５Ｉにおける長方形の切り欠き５１の後方端５１ｔ（補助線ｑ_５）から補助線ｑ_３で示される切り欠き前方端５１ｓまでの距離を２とおく（数値は長さを表わすが単位はなく、図４中では他の符号と区別するよう＜＞を付した。）。一方、帯材要部後部５ｂ側の任意の位置（補助線ｑ_２）から補助線ｑ_５までの距離を３とおく。すなわち、要部前部５ｂ_ｆ側で切り欠きのある部分の長手方向長さ（ｑ_５−ｑ_３）と、これに対応して設定された切り欠き後方端５１ｔから要部後部５ｂ_ｒ側にわたる所定部分までの長さ（ｑ_５−ｑ_２）とが、２：３の比率に設定されている。補助線ｑ_２から上方の端部５ａ（補助線ｑ_１）までの距離、補助線ｑ_３から下方の帯材端部５ａ（補助線ｑ_４）までの距離はいずれも１とおく。 The length of the elongation (elongation amount), cutouts 51 evenly elongation main part rear 5b _r than main portion front 5b _f Gayori substantially not in the longitudinal direction in order there, i.e. the expansion amount ΔLf (Lf _f -Lf _i) is greater than the expansion amount _{_{ΔLr (Lr f -Lr i) (}} ΔLf> ΔLr). This can be explained as follows if it is quantified more dimensionally to show ideal stretchability. Rear end 51t of the rectangular notch 51 in the strip 5I before stretching is denoted by 2 the distance from the (auxiliary line q ₅₎ to notch forward end 51s represented by auxiliary line q ₃ (although numbers represent the length There are no units, and in FIG. 4, <> is added to distinguish from other symbols. On the other hand, a distance from an arbitrary position (auxiliary line q ₂ ) on the belt material main part rear part 5 b side to the auxiliary line q ₅ is set to 3. That is, the longitudinal length of a portion of the notched at main portion front 5b _f side (q 5 _-q _3), over the main part rear 5b _r side notch from the rear end 51t is set to correspond to The length to the predetermined portion (q ₅ -q ₂ ) is set to a ratio of 2: 3. Distance from the auxiliary line q ₂ to the upper end 5a (auxiliary line q _1), the distance from the auxiliary line q ₃ to strip the end 5a of the lower (auxiliary line q ₄₎ is put as 1 none.

伸張前の帯材５Ｉの幅は全体において総幅ｗ_１とされており、切り欠きを設けられた部分の部材幅は、そこから切り欠き幅ｗ_７を減じた、部材幅ｗ_２とｗ_３との和となる（ｗ_１＝ｗ_２＋ｗ_３＋ｗ_７）。本実施形態のモデルでは両者の幅の比（（ｗ_２＋ｗ_３）／ｗ_１）を２／３となるように設定し、部材の厚さ及び素材は均一で弾性率が変わらないことを前提とする。そのため、伸張前の帯材５Ｉの両端を一様な張力で引っ張ると、計算上、上記両者の部材幅の比と反比例して伸びが生じ、すなわち切り欠き５１のある部分に対してきり欠きのある部分は３／２倍の伸度を示すこととなる。この状態を示したのが伸張後の帯材５Ｆのモデルであり、切り欠きのない部分の長さ（ｑ_５−ｑ_２）が４に伸張し、切り欠き５１のある部分の長さ（ｑ_５−ｑ_３）も４に伸張している。ただし、上記のモデルは説明のためのものであり、本発明において、寸法や伸張率の関係、素材の均質性等がこれにより限定して解釈されるものではない。帯材の寸法は特に限定されず、着用者または要求される製品性能等に応じて適宜設定すればよいが、例えば乳幼児用おむつに適用される場合、部材総幅ｗ_１は２０〜４０ｍｍであることが好ましく、切り欠き幅ｗ_７は１０〜２０ｍｍであることが好ましい。部材総幅ｗ_１と切り欠き幅ｗ_７の比は０．２＜（ｗ_７/ｗ_１）＜０．６であることが好ましい。また部材長さＬｒ_ｉの好ましい範囲は４０〜８０ｍｍであり、部材長さＬｆ_ｉの好ましい範囲は２５〜６５ｍｍである。 The width of the strip 5I before stretching is the total width w ₁ in the whole, member width of a portion which is provided a notch, the less the width w ₇ cutout therefrom member width w ₂ and w ₃ (W ₁ = w ₂ + w ₃ + w ₇ ). In the model of this embodiment, the ratio of the widths ((w ₂ + w ₃ ) / w ₁ ) is set to be 2/3, and it is assumed that the thickness and material of the member are uniform and the elastic modulus does not change. And Therefore, if the both ends of the strip 5I before stretching are pulled with a uniform tension, the elongation occurs in inverse proportion to the ratio of the two member widths, that is, the notch 51 has a notch. A certain part will show the elongation of 3/2 times. This state is shown in the model of the strip 5F after stretching, in which the length (q ₅ -q ₂ ) of the portion without the notch is expanded to 4, and the length of the portion with the notch 51 (q ₅ −q ₃ ) also extends to 4. However, the above model is for explanation, and in the present invention, the relationship between the dimensions and the stretch ratio, the homogeneity of the material, and the like are not limited and interpreted. The dimensions of the strip is not particularly limited and may be set as appropriate depending on the wearer or the required product performance, etc., but for example, when applied to infant diapers, members total width w ₁ is a 20~40mm it is preferred, the width _{w 7} notch is preferably 10 to 20 mm. The ratio between the total member width w ₁ and the notch width w ₇ is preferably 0.2 <(w ₇ / w ₁ ) <0.6. The members preferred range of length Lr _i is 40 to 80 mm, the preferred range of member length Lf _i is 25～65Mm.

弾性伸縮帯材５の幅については、伸縮に関与する部材幅をおむつに組み込んだときの機能との関係で、伸縮前の帯材５Ｉが股下直下ｋ_２で区分される帯材要部前部５ｂ_ｆと帯材要部後部５ｂ_ｒとにおける有効伸縮幅Ｗを規定する。この有効伸縮幅Ｗは、着用物品に組み込む前の自然形状の弾性伸縮帯材において、この伸縮性を示す所定の部分の平面視における面積Ｓを、該弾性伸縮帯材を引張する方向の前記帯材所定部分の長さＬで除した値として定義される。具体的に上記モデルについていうと、上記帯材要部前部５ｂ_ｆにおける有効伸縮幅Ｗｆはこの部分の面積Ｓｆを有効伸縮長さＬｆ_ｉで除した値となり（Ｗｆ＝Ｓｆ／Ｌｆ_ｉ）、上記帯材要部後部５ｂ_ｒにおける有効伸縮幅Ｗｒはこの部分の面積Ｓｒを有効伸縮長さＬｒ_ｉで除した値となる（Ｗｒ＝Ｓｒ／Ｌｒ_ｉ）。そして、本実施形態において要部前部の有効伸縮幅Ｗｆは要部後部の有効伸縮幅Ｗｒより小さくされており（Ｗｆ＜Ｗｒ）、その結果、弾性伸縮帯材が一様な引張を受けると要部後部より要部前部の伸張量が大きくなる（ΔＬｆ＞ΔＬｒ）。 The width of the elastic stretchable strip 5, the member width involved in expansion and contraction in relation to the function when incorporated into a diaper, the strip main part front portion strip 5I before expansion is divided by the crotch just below k ₂ It defines the effective expansion width W in the 5b _f and the strip main portion rear 5b _r. This effective expansion / contraction width W is an area S in a plan view of a predetermined portion showing the stretchability of the elastic stretch band material having a natural shape before being incorporated into a wearing article, and the band in the direction in which the elastic stretch band material is pulled. It is defined as a value divided by the length L of the predetermined part of the material. Specifically for the above model, the effective stretching width in the strip main part front 5b _f Wf is the value obtained by dividing the area Sf effective stretching length Lf _i of this portion _{(Wf = Sf / Lf i)} , effective stretch width Wr of the strip main portion rear 5b _r is a value obtained by dividing the area Sr of the portion effective stretching length _{_{Lr i (Wr = Sr / Lr}} i). In this embodiment, the effective expansion / contraction width Wf at the front part of the main part is made smaller than the effective expansion / contraction width Wr at the rear part of the main part (Wf <Wr). The extension amount of the front part of the main part is larger than the rear part of the main part (ΔLf> ΔLr).

図５は本実施形態のおむつ１０を乳幼児９０が着用しＭ字型に脚をまげた状態で股間側からみて模式的に示した斜視図である。ただし同図は弾性伸縮帯材５の形態及び作用を説明するためのものであり、この部材のみを実線で示し、その他の部材は省略しておむつの外形を一点鎖線で示している。本実施形態のおむつは、上述のように弾性伸縮帯材５がその前後において伸張量の異なる特有の形態とされ組み込まれたため、おむつ中間線ｋ_２が着用されたときに股下直下ｊよりやや着用者の腹側に移行するようになっている。そして、その股下前部Ｃｆが股下後部Ｃｒより縮んだ細かい襞目の脚周りギャザー部の状態とされることにより、乳幼児等の股間線においてややまるみがなく曲率半径（Ｒ_１）の小さい肌面部分にも好適に追従し、隙間のない良好なフィット性が実現される。とくにこの部分は、排尿ポイント９５に対応する位置となり横漏れ防止のための高いフィット性が求められる。しかも、図示したような蛙のように脚を曲げた体勢でこの部分の靭帯９８が隆起したようになれば、この部分の肌面の曲率半径Ｒ_１は一層小さくなりまるみを失う。このような条件においても本実施形態のおむつの脚周りギャザー部は好適に肌面に追従して対応し高いフィット性を示す。 FIG. 5 is a perspective view schematically showing the diaper 10 of the present embodiment as viewed from the crotch side in a state where the infant 90 wears and legs are folded in an M shape. However, this figure is for explaining the form and action of the elastic stretchable strip material 5, and only this member is shown by a solid line, and the outer shape of the diaper is omitted by a dashed line. Diaper of this embodiment, slightly worn than the crotch just below j when since the elastic stretchable strip 5 as described above is incorporated is a specific form of different expansion amount at before and after the diaper median line k ₂ being worn Shifts to the ventral side. Then, the crotch front part Cf is in a gathered state around the legs of the fine crotch, which is smaller than the crotch rear part Cr, so that the skin surface with a small curvature radius (R ₁ ) is present in the crotch line of an infant or the like. The part is also suitably followed, and good fit without gaps is realized. In particular, this portion is a position corresponding to the urination point 95, and a high fit for preventing side leakage is required. Moreover, if such ligaments 98 of this portion in posture with bent legs as frog as illustrated is raised, the radius of curvature R ₁ of the skin surface of the part loses much smaller becomes rounded. Even under such conditions, the gathered part around the leg of the diaper of the present embodiment suitably follows the skin surface and exhibits high fit.

着用者のおしりの方においては、股下後部Ｃｒの収縮が適度に抑えられ緩やかな襞目の脚周りギャザー部が構成されて、その部分の肌面の曲率半径（Ｒ_２）、つまり大きく緩やかに肌面が張り出したおしりのまるみに沿ってゆったりと追従する。これにより脚周りの締め付け具合のバランスが好適化され、前述のように股下前部Ｃｆでは尿等の横漏れをしっかりと防止するようにフィットし、他方、このおしりの部分では柔らかく適合して、強く食い込んで肌に深い跡を残すようなことを防止することができる。 In the wearer's hip, the shrinkage of the crotch rear part Cr is moderately suppressed, and a loosely gathered leg-around gather part is formed, and the radius of curvature (R ₂ ) of the skin surface of that part, that is, a large and gentle Follows the lumps of the buttocks overhanging the skin. Thereby, the balance of the tightening degree around the leg is optimized, and as described above, the crotch front part Cf fits so as to prevent side leakage such as urine firmly, while the buttocks part fits softly, It is possible to prevent a strong bite from leaving a deep mark on the skin.

さらに、本実施形態においては面状の弾性伸縮帯材５を適用し、かつその要部後部５ｂ_ｒには切り欠きがないため、股下後部Ｃｒにおいて着用者の肌面に当たる面積が広く確保される。そのため、おしりへの当たりの柔らかさが一層増し好ましい。また、着用者の殿溝や殿裂といった肌面の溝状の起伏に対しても、上記のように面で広く当たるため、この部分に食い込んだりしにくく、着用者にいやな感じを与えることを防ぐことができる。さらに、後述するような厚さのあるフォーム材料をこの弾性伸縮帯材５に用いれば、これが厚みをもって殿溝や殿裂の溝に良好にフィットしうるため好ましい。また、その厚みは１ｍｍ以上あることが良好なフィットをうるために好ましい。 Further, in the present embodiment applies the elastic stretchable strip 5 of the planar, and because there is no notch in the main portion rear 5b _r, the area which corresponds to the skin surface of the wearer in the crotch rear Cr is widely secured . For this reason, the softness against the buttocks is further increased, which is preferable. In addition, because it hits the surface of the skin, such as a groove or crevice of the wearer, on the surface as described above, it is difficult to bite into this part, giving the wearer an unpleasant feeling. Can be prevented. Furthermore, it is preferable to use a foam material having a thickness as will be described later for the elastic stretchable band material 5 because it can fit well into a groove or a groove of a crevice with a thickness. The thickness is preferably 1 mm or more in order to obtain a good fit.

また、股下前部においては、内部の帯材５に切り欠き５１があるため、この切り欠きが閉じるように幅方向の変形にも好適に対応することができる。これにより、脚の開閉動作など、大きな動きをうけるこの部分において、脚周りのギャザーがうまく変形しながら動的に追従し、良好なフィット性を維持することができる。さらには排尿ポイント９５からレッグ開口部の方（方向ｍ_１）に漏れ出てこようとするほどの多量の排泄があっても、切り欠き５１の両側の内側部分５ｔと外側部分５ｓとが二重の防漏壁となり確実に堰き止めることができる。さらに、厚さのあるフォーム材料をこの弾性伸縮帯材５に用いれば、高い防漏壁を形成できるため、より確実な堰き止め効果を得ることができ、その厚みは１ｍｍ以上あることが好ましい。 Moreover, since there is a notch 51 in the inner band member 5 at the crotch front, it is possible to suitably cope with deformation in the width direction so that the notch is closed. Thereby, in this part which receives a large movement such as the opening / closing operation of the leg, the gathers around the leg can dynamically follow while deforming well, and good fit can be maintained. Furthermore, even if there is a large amount of excretion that tends to leak from the urination point 95 toward the leg opening (direction m ₁ ), the inner portion 5t and the outer portion 5s on both sides of the notch 51 are doubled. It becomes a leak-proof wall and can be reliably dammed up. Furthermore, if a foam material having a thickness is used for the elastic stretchable band material 5, a high leak-proof wall can be formed, so that a more reliable damming effect can be obtained, and the thickness is preferably 1 mm or more.

弾性伸縮帯材としては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る。なかでもフォーム材料を用いることが好ましく、ウレタンフォーム材料を用いることがより好ましい。 As the elastic stretch band material, a normal elastic material can be used. Examples of the material include synthetic rubbers such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane. it can. Among them, it is preferable to use a foam material, and it is more preferable to use a urethane foam material.

図６（ａ）〜（ｈ）は弾性伸縮帯材５の変形例を、これをおむつ本体に組み込む前でありかつ伸張前の状態で模式的に示した平面図である。図６（ａ）は図１〜図５で示したものと同様の形態を有する弾性伸縮帯材である。図６（ｂ）に示したものは、この切り欠き５１の後方端５ｔがおむつの中央補助線ｋ_２を越えるようにしたものである。図６（ｃ）に示したものは、切り欠き５１を楕円形としたものである。図６（ｄ）に示したものは、切り欠き５１を、左右の半円形のものとして形成したものである。図６（ｅ）に示したものは、左右に長方形の切り欠きを設け、全体として倒伏した「凸」字状としたものである。図６（ｆ）に示したものは、切り欠き５１として多数の楕円形穴部を設けたものである。図６（ｇ）に示したものは、左右の一方に長方形の切り欠きを設け全体として横長の「Ｌ」字状としたものである。図６（ｈ）に示したものは、長方形の切り欠き２つを組み合わせて設け全体として横長の逆「Ｆ」字状としたものである。 6 (a) to 6 (h) are plan views schematically showing a modification of the elastic elastic band member 5 before being incorporated into the diaper body and before being stretched. FIG. 6A shows an elastic stretchable band material having the same form as that shown in FIGS. FIG 6 (b) to that shown are those rear end 5t of the notch 51 has to exceed the central auxiliary line k ₂ of the diaper. In FIG. 6C, the notch 51 has an oval shape. In FIG. 6D, the notch 51 is formed as a left and right semicircular shape. In FIG. 6E, rectangular cutouts are provided on the left and right sides, and the overall shape is a “convex” character that is lying down. In FIG. 6 (f), a large number of elliptical holes are provided as the notches 51. In FIG. 6G, a rectangular notch is provided on one of the left and right sides to form a horizontally long “L” shape as a whole. In FIG. 6 (h), two rectangular cutouts are combined to form a horizontally long inverted "F" shape as a whole.

図７は本発明の別の実施形態（実施形態２）の使い捨ておむつの構造を説明するための部分断面図であり、図３に対応する断面として示している。本実施形態のおむつ２０においては、吸収体４が表面シート１に包まれて吸収性本体４１を構成している。そして、この非肌面側にサイドカバーシート８が配設され、この吸収性本体４１の幅方向外方に延在する部分で基底線ｇ_ｉの外方部分は非接着で変形可能な状態にされている。そして、サイドカバーシート８の基底線ｇ_ｉの外方部分には３本の長尺弾性部材９（９ａ、９ｂ、９ｃ）が組み込まれ、自由端ｇ_ｊを含むこの部分が起立し防漏壁をなすようにされている。裏面シート２は多孔性シート２ａおよび不織布からなる外装材２ｂから構成され、弾性伸縮帯材５は上記多孔性シート２ａ及び不織布外装材２ｂの間に挟持され固定されている。本実施形態２の各部材の形成材料として用いられるものは本実施形態１で説明したものと同様であり、サイドカバーシート８については、サイドシート３で用いられるものを好適に用いることができる。 FIG. 7 is a partial cross-sectional view for explaining the structure of a disposable diaper according to another embodiment (Embodiment 2) of the present invention, and shows a cross-section corresponding to FIG. In the diaper 20 of this embodiment, the absorbent body 4 is wrapped in the top sheet 1 to constitute the absorbent main body 41. Then, the side cover sheet 8 on the non-skin side is disposed, the outer portion of the baseline g _i at a portion extending outward in the width direction of the absorbent body 41 in the deformable state in a non-adhesive Has been. Then, the outer portion of the baseline g _i of the side cover sheet 8 three elongated elastic member 9 (9a, 9b, 9c) is incorporated, the portion including the free end g _j is erected leakage preventing walls It is made to make. The back sheet 2 is composed of a porous sheet 2a and an exterior material 2b made of a nonwoven fabric, and the elastic stretch band material 5 is sandwiched and fixed between the porous sheet 2a and the nonwoven fabric exterior material 2b. What is used as a forming material of each member of the second embodiment is the same as that described in the first embodiment, and the side cover sheet 8 can be preferably used for the side sheet 3.

次に、上記本実施形態１の使い捨ておむつの製造方法の好ましい実施態様について説明する。図８は、本実施態様の製造工程の一部を模式化して示す工程説明図である。同図においては、おむつ本体を構成する表面シート及び裏面シートの素材となる表面シート連続素材３３と裏面シート連続素材３２との間に弾性伸縮帯材５を組み込む工程を示している。本実施態様においては、まず弾性伸縮帯材５の材料となる連続帯材３５が帯材ロール２１よりＭＤ（ＭａｃｈｉｎｅＤｉｒｅｃｔｉｎ）方向に供給される。この連続帯材は未伸張状態、つまり装置内を搬送するのに必要な程度で張力がかかることがあったとしても実質的には自然形状の状態でカッターロール２２ａとアンビルロール２２ｂの間へと送られる。ここでカッターロールの刃２２ｃにより所定の形状に切り欠き５１が設けられる。図中の（Ａ）にはこのときの平面視による形態を模式化して示している。次いで、前記切り欠きのある連続弾性帯材３５を一様な張力で伸張する。この伸張状態の付与は、一方においてフラットロール２３ａ及び２３ｂで連続帯材３５を挟持し、他方において後述する吸引ロールで連続帯材３５を固定しながら送るときに、両者の回転速度を調節することにより行うことができる。具体的にはフラットロール２３ａ及び２３ｂの回転速度（ｖ_１）を吸引ロール２５の回転速度（ｖ_２）より遅く設定する（ｖ_１＜ｖ_２）。なお、図中の（Ｂ）はここで、切り欠き５１とともに連続弾性帯材３５が引き伸ばされていることを、部材の平面視の形態により模式的に示している。 Next, the preferable embodiment of the manufacturing method of the disposable diaper of the said Embodiment 1 is demonstrated. FIG. 8 is a process explanatory view schematically showing a part of the manufacturing process of the present embodiment. In the same figure, the process of incorporating the elastic elastic band material 5 between the surface sheet continuous material 33 used as the material of the surface sheet and back surface sheet which comprise a diaper main body, and the back surface sheet continuous material 32 is shown. In the present embodiment, first, the continuous band material 35 that is the material of the elastic stretchable band material 5 is supplied from the band material roll 21 in the MD (Machine Directin) direction. Even if this continuous band is in an unstretched state, that is, tension may be applied to the extent necessary for transporting the inside of the apparatus, it is substantially in a natural shape between the cutter roll 22a and the anvil roll 22b. Sent. Here, the notch 51 is provided in a predetermined shape by the blade 22c of the cutter roll. (A) in the drawing schematically shows the form in plan view at this time. Next, the continuous elastic band member 35 having the notches is stretched with a uniform tension. The extension state is provided by adjusting the rotational speed of the continuous band member 35 while holding the continuous band member 35 between the flat rolls 23a and 23b on one side and fixing the continuous band member 35 with a suction roll, which will be described later. Can be performed. Specifically, the rotational speed (v ₁ ) of the flat rolls 23a and 23b is set slower than the rotational speed (v ₂ ) of the suction roll 25 (v ₁ <v ₂ ). Here, (B) in the drawing schematically shows that the continuous elastic band member 35 is stretched together with the notch 51 in a plan view of the member.

吸引ロール２５に送られてきた切り欠きを有する連続弾性帯材３５は、伸張状態が維持され、吸引ロール２５の吸引力ｕによりロール面に固定され搬送される。このような吸引は、ロール面に多数の吸引孔（図示せず）を設けて、通常この種の物品の製造に適用される吸気手段等により行うことができる。上記のように伸張状態が維持された連続弾性帯材３５は、カッターロール２７の刃２７ａにより所定の長さに裁断され弾性伸縮帯材５とされる。 The continuous elastic band member 35 having the notch sent to the suction roll 25 is maintained in an expanded state, and is fixed to the roll surface by the suction force u of the suction roll 25 and conveyed. Such suction can be performed by an intake means or the like that is usually applied to manufacture of this type of article by providing a large number of suction holes (not shown) on the roll surface. The continuous elastic band member 35 maintained in the stretched state as described above is cut into a predetermined length by the blade 27a of the cutter roll 27 to form the elastic elastic band member 5.

上記吸引ロール面上で伸張状態を保持された弾性伸縮帯材５は、その伸張状態を解かずに物品本体を構成するシート部材、本実施態様においては裏面シート連続素材３２に貼付される。裏面シート連続素材３２には、あらかじめ接着剤塗布機２６により接着剤３１が塗布されており、この接着剤３１がＭＤ方向に送られてくるタイミングに合わせて、上記弾性伸縮帯材５が貼り付けられる。このとき、本実施態様において、接着剤３１は弾性伸縮帯材５の中央要部５ｂと一致する位置ならびに長さで塗布されており、その部分で弾性伸縮帯材５は裏面シート連続素材３２に接着固定される。連続伸縮帯材５の両端部５ａは、連続伸縮帯材５が吸引ロール２５から裏面シート連続素材３２に転写されると、その部分で接着剤３１が塗布されていないので収縮した状態となり、おむつ本体に組み込まれた状態では伸縮性を実質的に滅失する状態となる。
上記とは別の実施態様として、上記接着剤の塗布機２６を２６ａの位置に設置し、連続弾性帯材３５側に接着材を塗付するようにしてもよい。なお、前記切り欠き５１のある弾性伸縮帯材５をシート材に取り付けるに当たり、切り欠き５１がおむつ本体の股下部分となる位置においてその腹側部分に偏在するように取り付けるように装置条件を設定することが好ましい。 The elastic elastic band material 5 held in the stretched state on the suction roll surface is affixed to the sheet member constituting the article main body, in the present embodiment, the backsheet continuous material 32 without unraveling the stretched state. An adhesive 31 is applied to the back sheet continuous material 32 in advance by an adhesive applicator 26, and the elastic elastic band material 5 is attached in accordance with the timing when the adhesive 31 is sent in the MD direction. It is done. At this time, in the present embodiment, the adhesive 31 is applied at a position and length that coincides with the central main portion 5b of the elastic stretchable band material 5, and the elastic stretchable band material 5 is applied to the back sheet continuous material 32 at that portion. Bonded and fixed. When the continuous elastic band material 5 is transferred from the suction roll 25 to the back sheet continuous material 32, the both ends 5a of the continuous elastic band material 5 are in a contracted state because the adhesive 31 is not applied at that portion, and the diaper When incorporated in the main body, the stretchability is substantially lost.
As an embodiment different from the above, the adhesive applicator 26 may be installed at the position 26a, and the adhesive may be applied to the continuous elastic band member 35 side. In addition, when attaching the elastic elastic band material 5 with the notch 51 to the sheet material, the apparatus conditions are set so that the notch 51 is attached so as to be unevenly distributed on the abdomen side portion at the position where it becomes the crotch portion of the diaper body. It is preferable.

上記弾性伸縮帯材５が取り付けられた裏面シート連続素材３２がさらに次工程に送られ、他方より送られてくる表面シート連続素材３３と対面するように、すなわち弾性伸縮帯材５を挟持するように積層して、おむつ本体を構成する複合部材３４が形成される。この複合部材３４としたときにも伸張状態が維持されていることが好ましく、吸収体を上記両シート連続素材の積層の前又は後に取り付けて、おむつ本体のかたちに裁断し伸張を解くことが好ましい。このようにして展張した状態のおむつ本体に伸張状態を維持された弾性伸縮性帯材が組み込まれたおむつを作製することができる。さらにファスニングテープ等を適宜取り付け、必要によりその他の加工を適宜施して、自然形状ないし着用状態において上記弾性伸縮帯材５が上述した前後に差のある収縮挙動を示し、脚周りギャザー部が着用者のからだのかたちにフィットする本実施形態のおむつが得られる。 The back sheet continuous material 32 to which the elastic elastic band material 5 is attached is further sent to the next process, and faces the continuous surface sheet material 33 sent from the other side, that is, the elastic elastic band material 5 is sandwiched. The composite member 34 which comprises a diaper main body is laminated | stacked on this. Even when the composite member 34 is formed, it is preferable that the stretched state is maintained, and it is preferable that the absorbent body is attached before or after the lamination of the two sheets of continuous material, and is cut into a diaper body shape to release the stretch. . In this way, a diaper in which an elastic stretchable band material maintained in an expanded state is incorporated into a diaper body in a stretched state can be produced. Furthermore, a fastening tape or the like is appropriately attached, and other processing is appropriately performed, and the elastic elastic band material 5 exhibits a contraction behavior having a difference before and after as described above in a natural shape or wearing state, and a leg gathered portion is a wearer. The diaper of this embodiment that fits the shape of the body can be obtained.

本発明の着用物品は上記実施形態のような幼児用の展開型使い捨ておむつに限定されるものではなく、パンツ型のものであっても、大人用のおむつであってもよい。また、尿とりパッド等の吸収パッドと組み合わせて用いる展開型おむつカバーであってもよく、この場合にも吸収パッドに配設された吸収体を、上記展開型おむつに係る実施形態の吸収体４としてみることができる。具体的には、吸収パッドの吸収体がおむつカバーの腹側部分Ｆから背側部分Ｒに股下部分Ｃを介して配置されるように吸収パッドとおむつカバーを組み合わせて装着する。このとき、おむつカバーの股下部に取り付けられた弾性伸縮帯材が上記実施形態において示したのと同様の機能を果たし、装着者の体形に合った理想的なフィット性を実現することができる。 The wearing article of the present invention is not limited to the deployment disposable diaper for infants as in the above embodiment, and may be a pants type or an adult diaper. Moreover, the expansion | deployment type diaper cover used in combination with absorption pads, such as a urine pad, may be sufficient, and the absorber 4 arrange | positioned in the absorption pad also in this case is the absorber 4 of embodiment concerning the said expansion | deployment type diaper. Can be seen as Specifically, the absorbent pad and the diaper cover are mounted in combination so that the absorbent body of the absorbent pad is disposed from the ventral part F to the dorsal part R of the diaper cover via the crotch part C. At this time, the elastic elastic band member attached to the crotch part of the diaper cover performs the same function as shown in the above embodiment, and can realize an ideal fit that matches the body shape of the wearer.

本発明の好ましい実施形態である乳幼児用の展開型使い捨ておむつ（実施形態１）を模式的に示した斜視図である。It is the perspective view which showed typically the expansion | deployment type disposable diaper (Embodiment 1) for infants which is preferable embodiment of this invention. 本実施形態１の使い捨ておむつを展開した状態で表面シート側からみた平面図である。It is the top view seen from the surface sheet side in the state which developed the disposable diaper of this Embodiment 1. 図２のIII−III線断面の拡大断面図である。It is an expanded sectional view of the III-III line cross section of FIG. 弾性伸縮帯材の伸張したときの形状の変化をより定量化して説明するためにモデル化した本実施形態における弾性伸縮帯材の平面図である。It is a top view of the elastic elastic band material in this embodiment modeled in order to quantify and explain the change of the shape when the elastic elastic band material is extended. 本実施形態のおむつを乳幼児に着用した状態を股間側からみて模式的に示した斜視図である。It is the perspective view which showed typically the state which wore the diaper of this embodiment to the infant, seeing from the crotch side. 図６（ａ）〜（ｈ）は弾性伸縮帯材の変形例を模式的に示した平面図である。FIGS. 6A to 6H are plan views schematically showing modified examples of the elastic stretchable band material. 図７は本発明の別の実施形態（実施形態２）の使い捨ておむつの構造を説明するための部分断面図である。FIG. 7: is a fragmentary sectional view for demonstrating the structure of the disposable diaper of another embodiment (Embodiment 2) of this invention. 本実施態様の製造工程の一部を模式化して示す工程説明図である。It is process explanatory drawing which shows a part of manufacturing process of this embodiment typically. は乳幼児のからだを横から見た部分斜視図である。FIG. 2 is a partial perspective view of an infant's body as seen from the side.

Explanation of symbols

１表面シート
２裏面シート
３サイドシート
４吸収体
４１吸収性本体
５弾性伸縮性帯材
５１切り欠き
６ファスニングテープ
７ランディングテープ
８サイドカバーシート
９長尺弾性部材
１０、２０使い捨ておむつ（着用物品）
１１使い捨ておむつ本体（物品本体）
９０乳幼児（着用者）
９１大腿部
９２腹部
９３背部
９４便排泄ポイント
９５尿排泄ポイント
９７股間
９８靭帯部分 DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Side sheet 4 Absorber 41 Absorbent main body 5 Elastic elastic band material 51 Notch 6 Fastening tape 7 Landing tape 8 Side cover sheet 9 Long elastic member 10, 20 Disposable diaper (wearing article)
11 Disposable diaper body (article body)
90 Infants (wearers)
91 thigh 92 abdomen 93 back 94 stool excretion point 95 urine excretion point 97 crotch 98 ligament part

Claims

An article body having a ventral part, a dorsal part, and a crotch part disposed between the two parts in the longitudinal direction, and the longitudinal direction of the article body at a position corresponding to the crotch part on both the left and right sides in the width direction. A wearing article provided with a pair of elastic stretch bands extending to
The elastic stretch band material is arranged so that its longitudinal direction straddles a crotch intermediate line that bisects the article main body in the longitudinal direction, and the following effective in the abdomen of the band material on the abdomen side of the crotch intermediate line The expansion / contraction width is smaller than the following effective expansion / contraction width in the back side of the band material on the back side,
The elastic stretch band material is stretched so that its longitudinal direction is stretched along the longitudinal direction of the wearing article, and the stretch amount of the belt material belly side portion is larger than the stretch amount of the belt material back side portion. A worn article incorporated in the article main body.
[Effective expansion / contraction width (W): In a natural elastic stretch band before being incorporated into the article body, an area (S) in a plan view of a predetermined portion of a region that can be involved in the expansion / contraction after being incorporated into the article body, A value obtained by dividing the elastic stretchable strip by the length (L) of the predetermined portion of the strip in the direction of pulling. ]

The wearing article according to claim 1, wherein the elastic elastic band member is a single long flat plate-like member, and a notch is formed on the belt side of the band member.

The wearable article includes an absorbent body that extends from the abdomen portion to the back portion through a crotch portion, and the absorbent body is bound so as to enter inward in the width direction at the crotch portion. 3. The wearing article according to 1 or 2.

The wearing article according to any one of claims 1 to 3, wherein the elastic elastic band member has a thickness of 1 mm or more and is made of a foam material.

The wearing article according to any one of claims 1 to 4, wherein the elastic elastic band member extends from a belly side portion to a back side portion of the article main body via a crotch portion.

An article body having a ventral part, a dorsal part, and a crotch part disposed between the two parts in the longitudinal direction, and the longitudinal direction of the article body at a position corresponding to the crotch part on both the left and right sides in the width direction. A method for producing a worn article provided with a pair of elastic elastic band members extending to
A step of cutting the continuous elastic elastic band material into a predetermined shape in an unstretched state, a step of pulling the continuous elastic elastic band material having the notch in the longitudinal direction with a uniform tension, and an extended state of the continuous elastic elastic band material Cutting the sheet into a predetermined length in the longitudinal direction while holding the elastic elastic band material in the stretched state, and the sheet member constituting the article body while maintaining the stretched state of the elastic elastic band material The manufacturing method of the wearing article which has the process of attaching.

7. When attaching the elastic elastic band member with the cutout to the sheet member, the elastic elastic band material is attached so as to be unevenly distributed on the ventral side portion at a position where the cutout part of the article main body becomes a crotch part. The manufacturing method of the wearing article as described in any one of.