JP3457650B2 - Pants-type disposable diapers - Google Patents
Pants-type disposable diapersInfo
- Publication number
- JP3457650B2 JP3457650B2 JP2001099867A JP2001099867A JP3457650B2 JP 3457650 B2 JP3457650 B2 JP 3457650B2 JP 2001099867 A JP2001099867 A JP 2001099867A JP 2001099867 A JP2001099867 A JP 2001099867A JP 3457650 B2 JP3457650 B2 JP 3457650B2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- diaper
- strength
- pants
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Nonwoven Fabrics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、パンツ型おむつ、
具体的には、前身頃と後身頃との両脇縁部を接合するこ
となどにより形成されたウエスト開口部および左右一対
のレッグ開口部を有する後処理可能なパンツ型使い捨て
紙おむつに関する。TECHNICAL FIELD The present invention relates to a pants-type diaper,
Specifically, the present invention relates to a post-processable disposable disposable diaper having a waist opening and a pair of left and right leg openings formed by joining both side edges of a front body and a back body.
【０００２】[0002]
【従来の技術】従来のパンツ型使い捨て紙おむつは、腹
側の両側縁部と背側の両側縁部とがヒートシール等の熱
溶着によりそれぞれ接合され、ウエスト開口部および左
右一対のレッグ開口部が形成されている。2. Description of the Related Art In a conventional pants-type disposable paper diaper, both side edges on the abdomen side and both side edges on the back side are joined by heat welding such as heat sealing, and a waist opening and a pair of left and right leg openings are formed. Has been formed.
【０００３】そして、この種のパンツ型使い捨て紙おむ
つの使用方法の一つとして、使用後に側縁の接合部全体
を剥がして（または引き裂いて）被着体から紙おむつを
取り外すことがある。この手法は、特に老人のようにパ
ンツ型紙おむつを脱ぐのが難しい、あるいは脱がせるの
が難しい場合に適している。As one of the methods of using this type of pants-type disposable paper diaper, the paper diaper is removed from the adherend by peeling (or tearing) the entire side edge joint after use. This method is particularly suitable when it is difficult or difficult to remove the pants-type diaper, such as an old man.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
パンツ型紙おむつは、使用時における剥がれ難さしか重
視しておらず、側縁接合部の接合強度が強過ぎたため、
前述のような紙おむつ取り外しを行う場合には、力の弱
い女性や老人では側縁接合部を剥がし難いという問題点
を有していた。またそのため、はさみ等で接合部または
その近傍を切り裂く人もあり、使用者の肌を傷つける危
険があった。However, in the conventional pants-type paper diaper, only the difficulty of peeling during use is emphasized, and the joint strength of the side edge joint portion is too strong.
In the case of removing the paper diaper as described above, there is a problem that it is difficult for a woman or an elderly person with weak strength to peel off the side edge joint. For this reason, there are some people who cut the joint or the vicinity thereof with scissors, etc., which poses a risk of damaging the user's skin.
【０００５】そこで、本発明の主たる課題は、使用後に
おいては力の弱い女性や老人であっても側縁接合部を容
易に剥がすことができ、なおかつ使用時においては側縁
接合部が十分に剥がれ難い、パンツ型使い捨て紙おむつ
を提供することにある。Therefore, the main problem of the present invention is that even after weakening the strength of the side edge joint can be easily removed even by a weak woman or an elderly person, and at the time of use, the side edge joint can be sufficiently removed. It is to provide a pants-type disposable paper diaper that is hard to peel off.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決した本発
明は次記のとおりである。
＜請求項１記載の発明＞腹側の両側縁部と背側の両側縁
部とがそれぞれ接合され、ウエスト開口部および左右一
対のレッグ開口部が形成された、パンツ型使い捨て紙お
むつにおいて、前記接合部の接合強度が２．０〜６．０
ｋｇ／５０ｍｍとされ、前記接合部における、上端部の
接合強度をＸ、下端部の接合強度をＹ、およびこれら両
端部間の中間部の接合強度をＺとしたとき、
Ｘ＞Ｙ＞Ｚ
の強度関係を有するように構成された、ことを特徴とす
るパンツ型使い捨ておむつ。The present invention which has solved the above-mentioned problems is as follows. <Invention according to claim 1> In a pants-type disposable paper diaper, wherein both side edges on the ventral side and both side edges on the back side are respectively joined to form a waist opening and a pair of left and right leg openings. Joint strength of the part is 2.0 to 6.0
When the joint strength of the upper end portion is X, the joint strength of the lower end portion is Y, and the joint strength of the intermediate portion between these two end portions is Z, then X>Y> Z A pants-type disposable diaper characterized by having a strength relationship.
【０００７】（作用効果）パンツ型紙おむつを使用して
いるときに、側縁の接合部において最も剥がれやすい部
分は、上端部（ウエスト開口部がわの端部）であり、次
いで下端部（レッグ開口部がわの端部）が剥がれやす
く、これらの間の中間部は最も剥がれ難い。したがっ
て、上記課題を解決する上では、使用時において接合部
の剥がれやすさが縦方向に異なることに対応させて、接
合部の強度を２．０〜６．０ｋｇ／５０ｍｍの範囲で縦
方向に異ならしめるのが望ましい。これによって、使用
後においては力の弱い女性や老人であっても接合部を容
易に剥がすことができ、なおかつ使用時においては接合
部が剥がれ難いものとなる。(Advantageous effects) When using a pants-type diaper, the most easily peeled off portion at the side edge joint is the upper end (the waist opening is the end of the crochet), and then the lower end (leg). The opening portion is easily peeled off at the end of the hole, and the middle portion between them is the most difficult to peel off. Therefore, in solving the above-mentioned problems, the strength of the joint portion in the longitudinal direction is set in the range of 2.0 to 6.0 kg / 50 mm in correspondence with the ease of peeling of the joint portion in the longitudinal direction during use. It is desirable to make them different. As a result, after use, even a weak woman or an elderly person can easily peel off the joint portion, and at the time of use, the joint portion does not easily come off.
【０００８】＜請求項２記載の発明＞前記接合部におけ
る、上端部の接合強度をＸ、下端部の接合強度をＹ、お
よびこれら両端部間の中間部の接合強度をＺとしたと
き、
１．２Ｚ≦Ｘ≦３．０Ｚ
１．０Ｚ＜Ｙ≦２．０Ｚ
の強度関係を有するように構成された、請求項１記載の
パンツ型使い捨て紙おむつ。<Invention of Claim 2> When the joint strength at the upper end of the joint is X, the joint strength at the lower end is Y, and the joint strength at the intermediate portion between these two ends is Z, 1 The pants-type disposable paper diaper according to claim 1, which is configured to have a strength relationship of 2Z ≦ X ≦ 3.0Z 1.0Z <Y ≦ 2.0Z.
【０００９】（作用効果）かかる大小関係に基づいて接
合部の強度を縦方向に異ならしめることによって、使用
後においては力の弱い女性や老人であっても側縁接合部
をより容易に剥がすことができ、なおかつ使用時におい
ては側縁接合部がより剥がれ難いものとなる。(Effect) By making the strength of the joint different in the longitudinal direction based on the magnitude relation, the side edge joint can be peeled off easily even after use, even for a weak woman or an elderly person. In addition, the side edge joints are more difficult to peel off during use.
【００１０】＜請求項３記載の発明＞前記接合される背
側及び腹側の両側縁部を含むおむつ最外面を構成する最
外面シートが複数種の繊維を混合状態で含有するエアス
ルー不織布シートにより形成され、この最外面シートの
背側および腹側が前記ウエスト開口部においておむつ最
内面にそれぞれ折り返され、その折り返し内面部分の縦
方向幅が３０〜７０ｍｍとされ、前記接合部における上
端部は、前記最外面シートのおむつ外面部分および前記
折り返し内面部分を含み、その他の部分は前記最外面シ
ートのおむつ外面部分は含むが折り返し内面部分は含ま
ないように構成された、請求項１または２記載のパンツ
型使い捨て紙おむつ。<Invention of Claim 3> The outermost sheet constituting the outermost surface of the diaper including both edges of the back side and the ventral side to be joined is an air-through nonwoven fabric sheet containing a plurality of kinds of fibers in a mixed state. Formed, the back side and the abdomen side of this outermost sheet are respectively folded back to the innermost surface of the diaper at the waist opening, and the longitudinal width of the folded back inner surface portion is 30 to 70 mm, and the upper end portion of the joint portion is the The pants according to claim 1 or 2, wherein the outermost sheet includes a diaper outer surface portion and the folded back inner surface portion, and the other portion includes the outermost diaper outer surface portion but does not include the folded back inner surface portion. Type disposable paper diapers.
【００１１】（作用効果）従来のパンツ型使い捨て紙お
むつを構成する不織布としては、ポリプロピレン繊維を
用いてスパンボンド法により形成したＰＰスパンボンド
不織布や、エアスルー法によるエアスルー不織布、ポイ
ントボンド法によるポイントボンド不織布が知られてい
る。本発明は、このうちエアスルー不織布が本来的に有
する特性としての強度の低さ、ならびに複数種の繊維を
混合状態で用いることによる強度調節の容易性に着目し
てなされたものであり、接合部の強度に寄与する最外面
シートを、複数種の繊維を混合状態で含有するエアスル
ー不織布シートにより形成して、接合部の接合強度を前
述のように調節するところに、主要ポイントを有するも
のである。特に最外面シートをおむつ最内面に折り返す
ことにより、接合部の上端部において比較的低強度のシ
ート数が増加することとなるため、強度を微妙に増加さ
せることができ、剥がれ難くなることもない。(Function and effect) As a non-woven fabric which constitutes a conventional pants-type disposable paper diaper, a PP spun-bonded non-woven fabric formed by a spun bond method using polypropylene fiber, an air-through non-woven fabric by the air through method, a point bond non-woven fabric by the point bond method. It has been known. The present invention has been made paying attention to low strength as a characteristic that the air-through nonwoven fabric originally has, and easiness of strength adjustment by using plural kinds of fibers in a mixed state. The outermost sheet that contributes to the strength of is formed by an air-through non-woven fabric sheet containing a plurality of types of fibers in a mixed state, and the main point is to adjust the bonding strength of the bonded portion as described above. . In particular, by folding the outermost sheet back to the innermost surface of the diaper, the number of relatively low-strength sheets increases at the upper end portion of the joint, so the strength can be slightly increased, and peeling does not occur easily. .
【００１２】＜請求項４記載の発明＞前記エアスルー不
織布として、太さが４ｄｔｅｘ以下のＰＥ／ＰＥＴ繊維
を６０〜９０重量％および太さが４ｄｔｅｘ以下のＰＥ
／ＰＰ繊維を４０〜１０重量％それぞれ含有するエアス
ルー不織布を用いた、請求項３記載のパンツ型使い捨て
紙おむつ。<Invention of Claim 4> As the air-through nonwoven fabric, PE / PET fiber having a thickness of 4 dtex or less is 60 to 90% by weight and PE having a thickness of 4 dtex or less.
The pants-type disposable paper diaper according to claim 3, wherein an air-through nonwoven fabric containing 40 to 10% by weight of / PP fiber is used.
【００１３】（作用効果）特にかかるエアスルー不織布
を用いることにより、使用後においては力の弱い女性や
老人であっても側縁接合部をより容易に剥がすことがで
き、なおかつ使用時においては側縁接合部がより剥がれ
難いものとできるだけでなく、おむつ最外面が非常に柔
らかく、肌触りも良好となる利点がもたらされる。な
お、いうまでもないが、ＰＥはポリエチレン、ＰＥＴは
ポリエチレンテレフタレート、ＰＰはポリプロピレンを
それぞれ意味する（以下同じ）。(Effect) Particularly, by using such an air-through nonwoven fabric, the side edge joint can be more easily peeled off even after use, even for a weak woman or an elderly person, and at the time of use, the side edge joint can be removed. Not only can the joints be harder to peel off, but the outermost surface of the diaper is also very soft and the touch is good. Needless to say, PE means polyethylene, PET means polyethylene terephthalate, and PP means polypropylene (hereinafter the same).
【００１４】[0014]
【発明の実施の形態】以下、本発明を図面に示す実施の
形態によってさらに詳説する。
＜本発明が対象とするパンツ型紙おむつの例＞
図１はパンツ型おむつ例の展開状態を示し、図２は図１
のII−II線矢視図、図３は図１のIII−III線矢視図、図
４は製品の斜視図である。ここに、図１を用いておむつ
各部名称の意味について説明すると、先ず、「縦方向」
とは、腹側と背側を結ぶ方向を意味し、「周方向」とは
前記縦方向と直交する方向（または製品幅方向）を意味
する。図４に示すとおり、「ウエスト開口縁」とはウエ
スト開口部ＷＯの縁を意味し、「レッグ開口縁」とはレ
ッグ開口部ＬＯの縁を意味する。「レッグ開口始端」と
はレッグ開口部ＬＯのレッグ開口縁と接合部３０と交差
する位置を意味し、レッグ開口縁の始まり個所の意味で
ある。「胴周り領域」Ｔとは、ウエスト開口縁からレッ
グ開口始端に至る長さ範囲の全体領域を意味する。胴周
り領域Ｔは、概念的に「ウエスト部」Ｗと「腰下部」Ｕ
とに分けることができる。これらの縦方向の長さは、製
品のサイズによって異なるが、ウエスト部Ｗは３０〜７
０ｍｍ、腰下部Ｕは４５〜２２０ｍｍである。「股部領
域」Ｌとは、レッグ開口部を形成する範囲、すなわち前
身頃側のレッグ開口始端から後身頃側のレッグ開口始端
に至る長さ範囲の全体領域を意味する。また、「中央
部」とは、製品の中央線を含む側部を除く中間領域を意
味する。「脇部」とは、胴周り領域Ｔにおける両側部を
意味する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. <Example of pants-type diaper to which the present invention is applied> FIG. 1 shows a developed state of an example of pants-type diaper, and FIG.
II-II line arrow view of FIG. 3, FIG. 3 is a III-III line arrow view of FIG. 1, and FIG. 4 is a perspective view of the product. Here, the meaning of each part name of the diaper will be described with reference to FIG.
Means the direction connecting the ventral side and the dorsal side, and the "circumferential direction" means the direction orthogonal to the longitudinal direction (or the product width direction). As shown in FIG. 4, the “waist opening edge” means the edge of the waist opening WO, and the “leg opening edge” means the edge of the leg opening LO. The “leg opening start end” means a position where the leg opening edge of the leg opening LO intersects with the joint portion 30, and means the starting point of the leg opening edge. The “trunk region” T means the entire region in the length range from the waist opening edge to the leg opening start end. The waist region T is conceptually “waist part” W and “lower waist part” U
Can be divided into The length in the vertical direction varies depending on the size of the product, but the waist portion W has a width of 30 to 7
0 mm, the lower waist U is 45 to 220 mm. "Crotch region" L means the entire region of the range forming the leg opening, that is, the length range from the front end of the front leg to the start of the rear leg opening. Further, the "central portion" means an intermediate region excluding the side portion including the center line of the product. The “side part” means both side parts in the waist region T.
【００１５】次に構造について説明すると、本例の紙お
むつは、おむつ外形をなす最外面シート５と、この最外
面シート５の内面にウエスト部Ｗを除く部分を覆うよう
に固定された押えシート６と、この押えシート６の内面
に固定され、おむつ幅方向中央において股間部４を中心
として前後方向に延在する吸収体ＡＢと、吸収体ＡＢの
前端部および後端部のそれぞれからウエスト部Ｗまで且
つ外形に沿う幅で延在する前後漏れ防止シート１１と、
を主体として構成されている。Explaining the structure, the paper diaper of the present example has an outermost sheet 5 having an outer shape of the diaper, and a holding sheet 6 fixed to the inner surface of the outermost sheet 5 so as to cover the portion excluding the waist portion W. And an absorbent body AB that is fixed to the inner surface of the presser sheet 6 and extends in the front-rear direction around the crotch portion 4 at the center of the diaper width direction, and the waist portion W from the front end portion and the rear end portion of the absorbent body AB. Front and rear leakage prevention sheet 11 extending up to the width along the outer shape,
It is mainly composed of.
【００１６】また特に本例では、最外面シート５の背側
および腹側がウエスト開口部ＷＯにおいておむつ最内面
にそれぞれ折り返され、その折り返し部分５ｉが漏れ防
止シートのウエスト部Ｗの上面に固定されている。この
折り返し内面部分５ｉの縦方向幅は、３０〜７０ｍｍと
するのが望ましい。Further, particularly in this embodiment, the back side and the abdomen side of the outermost sheet 5 are folded back to the innermost surface of the diaper at the waist opening portion WO, and the folded back portion 5i is fixed to the upper surface of the waist portion W of the leakproof sheet. There is. The vertical width of the folded back inner surface portion 5i is preferably 30 to 70 mm.
【００１７】また、良く知られているように使い捨て紙
おむつにおいては、体へのフィット性を高めるために、
適所に糸ゴム等の弾性伸縮部材が配置固定される。本例
では図３にも示すように、ウエスト部Ｗにおいては、最
外面シート５における外面部分と折り返し内面部分５ｉ
との間、ならびに最外面シート５の外面部分と漏れ防止
シート６との間に、５〜１０本程度のウエスト伸縮部材
８が縦方向に１〜１０ｍｍ程度の間隔をおいて周方向に
沿って伸張下に配置固定されている。また、腰下部Ｕに
おいては、胴周りのフィット性を高め尿の前後漏れを防
止するために、最外面シート５と押えシート６との間
に、周方向に沿って５〜１５本程度の腰下部伸縮部材７
が縦方向に５〜１５ｍｍ程度の間隔をおいて周方向に沿
って伸張下に配置固定されている。さらに、脚周りのフ
ィット性を高めるために、腹側および背側のそれぞれに
おいて一方側の側縁接合部３０から脚周りを通り、股間
部４を通り、他方側の脚周りを通り他方側の側縁接合部
３０まで延在する３〜５本程度の脚周り伸縮部材９が、
側縁接合部３０および股間部４においては間隔をあけず
に且つ脚周り部においては３〜５ｍｍの間隔をあけて、
最外面シート５と押えシート６との間に配置固定されて
いる。Further, as is well known, in the disposable paper diaper, in order to improve the fit to the body,
Elastic elastic members such as rubber thread are arranged and fixed in place. In the present example, as shown in FIG. 3, in the waist portion W, the outer surface portion of the outermost sheet 5 and the folded back inner surface portion 5i.
Between, and between the outer surface portion of the outermost sheet 5 and the leakage prevention sheet 6, about 5 to 10 waist elastic members 8 are longitudinally spaced at intervals of about 1 to 10 mm along the circumferential direction. Placed and fixed under extension. Further, in the lower waist U, in order to improve fit around the waist and prevent leakage of urine in the front and back, between the outermost surface sheet 5 and the presser sheet 6 about 5 to 15 waists along the circumferential direction. Lower elastic member 7
Are arranged and fixed under extension along the circumferential direction at intervals of about 5 to 15 mm in the vertical direction. Furthermore, in order to improve the fit around the legs, the legs are passed from the side edge joints 30 on one side to the legs, to the crotch portion 4, and to the legs on the other side on the ventral side and the dorsal side, respectively. About 3 to 5 leg elastic members 9 extending to the side edge joint portion 30,
In the side edge joint portion 30 and the crotch portion 4, there is no space, and in the leg surroundings, there is a space of 3 to 5 mm,
It is arranged and fixed between the outermost sheet 5 and the pressing sheet 6.
【００１８】なお、以上に説明したシート相互の固定な
らびにシートに対する伸縮部材の固定は、ホットメルト
接着剤等の接着剤を用いて行うことができる。The fixing of the sheets to each other and the fixing of the elastic member to the sheets described above can be performed using an adhesive such as a hot melt adhesive.
【００１９】他方、吸収体ＡＢは、図２及び図３に示す
ように、たとえば、不織布などからなり着用者の肌に直
接触れる透液性トップシート１と、ポリエチレンなどの
プラスチックフィルムや撥水処理を施した不織布からな
る不透液性バックシート２との間に、綿状パルプを主体
とする吸収コア３を必要によりこれを吸収紙３Ａ，３Ｂ
で包み、周縁部分を例えばホットメルト接着剤などによ
り接着して一体化したものとして形成することができ
る。On the other hand, as shown in FIGS. 2 and 3, the absorbent body AB is made of, for example, a non-woven fabric or the like, a liquid-permeable top sheet 1 that comes into direct contact with the wearer's skin, a plastic film such as polyethylene or a water repellent treatment. The absorbent core 3 mainly composed of cotton-like pulp is provided between the liquid-impermeable back sheet 2 and the liquid-impervious back sheet 2 which has been treated with the absorbent paper 3A, 3B.
It can be formed by wrapping with, and adhering the peripheral portion by, for example, a hot melt adhesive or the like to be integrated.
【００２０】さらに本例では、図２にも示すように、か
かる吸収体ＡＢの両側部には脚周りバリヤーカフス２
０，２０が設けられている。このバリヤーカフス２０
は、折り返して二重にしたバリヤーシート２１から構成
されており、バリヤーシート２１の内側面の基端部がバ
ックシート２にホットメルト接着剤により固定されてい
る。 Further, in this example, as shown in FIG. 2, the leg-barrier cuffs 2 are provided on both sides of the absorbent body AB.
0 and 20 are provided. This barrier cuff 20
Is composed of a barrier sheet 21 which is folded back and doubled, and the base end portion of the inner surface of the barrier sheet 21 is fixed to the back sheet 2 by a hot melt adhesive.
It
【００２１】バリヤーシート２１の折り返し自由縁部の
近傍には、帯状ゴムや糸状ゴムなどからなる単数又は複
数の先端部伸縮部材２２が伸長下でホットメルト接着剤
などにより固定されている。また図示のようにバリヤー
カフス２０は起立する自由部のほぼ中央において先端側
が外側に折り返されて外向き部が形成されており、この
折り返しがなされていない内向きの基端部側（根元側）
に単数又は複数の基端部伸縮部材２２Ａが伸長下でホッ
トメルト接着剤などにより固定されている。In the vicinity of the folded back free edge portion of the barrier sheet 21, a single or plural distal end elastic members 22 made of band-shaped rubber or thread-shaped rubber are fixed by stretching with a hot melt adhesive or the like. Further, as shown in the figure, the barrier cuff 20 has an outward facing portion formed by folding the tip end side outwardly at approximately the center of the free standing portion, and this inward facing base end portion side (root side) is not folded back.
Further, a single or a plurality of base end elastic members 22A are fixed by a hot melt adhesive or the like under extension.
【００２２】さらに本例では、この種のパンツ型使い捨
て紙おむつにおいて良く見るように、後身頃の腰下部外
面には、使用後に紙おむつを丸めた状態で止着するため
の後処理テープ７０が取り付けられている。Further, in this example, as is often seen in this type of pants-type disposable paper diaper, a post-treatment tape 70 for attaching the paper diaper in a rolled state after use is attached to the outer surface of the lower waist of the rear body. ing.
【００２３】このような構成で、図１に示す展開状態の
おむつ半製品を製造した後の製造工程の最終段階で、前
身頃Ｆと後身頃Ｂとの両側縁部の長手方向全体を超音波
シールや熱溶融などの繊維溶着手段により接合する（こ
の接合部を符号３０としてある）ことにより、図４に示
されているようにウエスト開口部ＷＯおよび左右一対の
レッグ開口部ＬＯが形成される。In the final stage of the manufacturing process after manufacturing the semi-finished product of the diaper shown in FIG. 1 with such a configuration, ultrasonic waves are applied to the entire longitudinal direction of both side edges of the front body F and the back body B. The waist opening WO and the pair of left and right leg openings LO are formed as shown in FIG. 4 by joining with a fiber welding means such as sealing or heat melting (this joining portion is denoted by reference numeral 30). .
【００２４】＜本発明の特徴構成＞さて、以上に説明し
たパンツ型紙おむつ例において本発明の特徴構成（接合
部強度２．０〜６．０ｋｇ／５０ｍｍ、および上端部の
接合強度Ｘ＞下端部の接合強度Ｙ＞中間部の接合強度
Ｚ）を具備せしめるためには、上記の最外面シート５
（折り返し部分５ｉを含む）として、複数種の繊維から
なるエアスルー不織布を用いることを推奨する。これに
対して、押えシート６および前後漏れ防止シート１１と
しては、同種の又は繊維種の異なるエアスルー不織布を
用いることもできるが、スパンボンド不織布等を用いる
のが望ましい。<Characteristic Configuration of the Present Invention> Now, in the example of the pants-type paper diaper described above, the characteristic configuration of the present invention (joint strength 2.0 to 6.0 kg / 50 mm, and upper joint strength X> lower end) In order to provide the joint strength Y of the above> the joint strength Z of the intermediate portion, the above-mentioned outermost sheet 5
It is recommended to use an air-through non-woven fabric composed of plural kinds of fibers as (including the folded-back portion 5i). On the other hand, as the pressing sheet 6 and the front-rear leakage prevention sheet 11, air-through nonwoven fabrics of the same type or different fiber types may be used, but spunbonded nonwoven fabrics or the like are preferably used.
【００２５】本発明で用いるエアスルー不織布の具体例
としては、ＰＥ／ＰＥＴ繊維及びＰＥ／ＰＰ繊維を混合
して用いた、ＰＥ／ＰＥＴ−ＰＥ／ＰＰ混合単層エアス
ルー不織布が望ましいが、本発明の範囲において他の繊
維の組み合わせも可能である。他の繊維としてはＰＰ／
ＰＰ繊維等がある。エアスルー不織布シートの坪量とし
ては、１５〜４５ｇ／ｍ2が好ましい。As a specific example of the air-through nonwoven fabric used in the present invention, a PE / PET-PE / PP mixed single-layer air-through nonwoven fabric obtained by mixing PE / PET fiber and PE / PP fiber is preferable. Other fiber combinations are also possible in the range. PP / as other fiber
There are PP fibers and the like. The basis weight of the air-through nonwoven fabric sheet is preferably 15 to 45 g / m 2 .
【００２６】また、エアスルー不織布シートの原反は長
手方向（ＭＤ方向）に沿う繊維配向を有しており、これ
を通常の紙おむつ製造ラインに供給した場合、エアスル
ー不織布シートの繊維配向方向がおむつ周方向に沿うこ
とになる。エアスルー不織布シートは繊維配向方向の強
度は比較的に高いものの、これと直交するＣＤ方向の強
度は比較的に低くなるので、これを用いた場合、最外面
シートのおむつ周方向の強度は比較的に高くなる。Further, the original fabric of the air-through nonwoven fabric sheet has a fiber orientation along the longitudinal direction (MD direction), and when it is supplied to an ordinary paper diaper production line, the fiber orientation direction of the air-through nonwoven fabric sheet is around the diaper. It will follow the direction. Although the strength of the air-through nonwoven fabric sheet is relatively high in the fiber orientation direction, the strength in the CD direction orthogonal thereto is relatively low. Therefore, when this is used, the strength of the outermost sheet in the diaper circumferential direction is relatively high. Become higher.
【００２７】そして、かかるエアスルー不織布を前述の
紙おむつに適用した場合、接合部３０は図５に示すよう
に縦方向に異なるシート構成を有するようになる。すな
わち、（ｘ）接合部３０における上端部３０Ｕは、最外
面シート５のおむつ外面部分と、折り返し内面部分５ｉ
と、それらの間に配された、ウエスト伸縮部材８と、漏
れ防止シート１１のウエスト部相当部と、これら要素相
互を接着する接着剤（図示せず）とから構成され、その
縦方向幅は例えば３０〜７０ｍｍ程度とされ、（ｙ）下
端部３０Ｂは、最外面シート５のおむつ外面部分と、漏
れ防止シート１１と、それらの間に配された押えシート
６と、最外面シート５のおむつ外面部分および押えシー
ト６間に配された脚周り伸縮部材９と、これら要素相互
を接着する接着剤（図示せず）とから構成され、その縦
方向幅は例えば８０〜１５０ｍｍ程度とされ、（ｚ）中
間部３０Ｍは、最外面シート５のおむつ外面部分と、漏
れ防止シート１１と、それらの間に配された押えシート
６と、最外面シート５のおむつ外面部分および押えシー
ト６間に配された腰下部伸縮部材７と、これら要素相互
を接着する接着剤（図示せず）とから構成され、その縦
方向幅は例えば２０〜５０ｍｍ程度とされる。When the air-through nonwoven fabric is applied to the above-mentioned disposable diaper, the joint portion 30 has a different sheet structure in the longitudinal direction as shown in FIG. That is, (x) the upper end portion 30U of the joint portion 30 has the diaper outer surface portion of the outermost sheet 5 and the folded back inner surface portion 5i.
And a waist elastic member 8 arranged between them, a waist equivalent portion of the leak prevention sheet 11, and an adhesive (not shown) that bonds these elements to each other. For example, the length is about 30 to 70 mm, and (y) the lower end portion 30B includes the outer surface portion of the outermost sheet 5, the leak prevention sheet 11, the holding sheet 6 disposed between them, and the outermost sheet 5 diaper. It is composed of leg elastic members 9 arranged between the outer surface portion and the pressing sheet 6 and an adhesive (not shown) for adhering these elements to each other, and the vertical width thereof is, for example, about 80 to 150 mm. z) The intermediate portion 30M is disposed between the outer surface portion of the outermost sheet 5, the leakage prevention sheet 11, the holding sheet 6 arranged between them, and the outer portion of the outermost sheet 5 and the holding sheet 6. Was done A lower elastic member 7 is constituted from a bonding agent for bonding these elements cross (not shown), the longitudinal width is, for example 20~50mm about.
【００２８】このように構成することによって、各部の
構成要素等が異なるために、前述のように、
上端部接合強度Ｘ＞下端部接合強度Ｙ＞中間部接合強度
Ｚ
という関係が成り立つようになる。また特にこの場合に
は、
１．２Ｚ≦Ｘ≦３．０Ｚ
１．０Ｚ＜Ｙ≦２．０Ｚ
の強度関係を有するようになる。さらに、接合部３０の
全ての部位３０Ｕ，３０Ｍ，３０Ｂに共通の要素として
含まれる最外面シート５として前述のように柔らかいエ
アスルー不織布シートを用いることにより、接合部強度
が２．０〜６．０ｋｇ／５０ｍｍ、特に２．１〜４．２
ｋｇ／５０ｍｍと、微妙に低くすることができ、よって
使用後においては力の弱い女性や老人であっても側縁接
合部３０を容易に剥がすことができ、なおかつ使用時に
おいては側縁接合部３０がより剥がれ難いという相反す
る特性を両立させることができるようになる。With this structure, since the constituent elements of the respective parts are different, as described above, the relationship of upper end joining strength X> lower end joining strength Y> intermediate portion joining strength Z is established. . Further, particularly in this case, the strength relationship of 1.2Z ≦ X ≦ 3.0Z 1.0Z <Y ≦ 2.0Z is obtained. Furthermore, by using the soft air-through nonwoven fabric sheet as described above as the outermost sheet 5 included as a common element in all the portions 30U, 30M, 30B of the joint portion 30, the joint strength is 2.0 to 6.0 kg. / 50 mm, especially 2.1 to 4.2
It can be delicately lowered to 50 kg / 50 mm, so that the side edge joint portion 30 can be easily peeled off even after use, even for a woman or an elderly person with weak strength, and the side edge joint portion can be used at the time of use. The contradictory characteristics that 30 is more difficult to peel off can be achieved at the same time.
【００２９】ここに、本発明にいう接合部の強度は、次
のようにして測定することができる。すなわち図６に示
すように、（Ａ）先ず接合部３０の上端部３０Ｕ、中間
部３０Ｍおよび下端部３０Ｂにおいて、腹側および背側
にそれぞれ周方向長さ６０ｍｍかつ幅５０ｍｍの部分を
切り取り、これを試験片ＴＳとする。（Ｂ）次いで、こ
の試験片ＴＳをおむつ周方向に相当する方向へ引っ張る
ように引張試験機にセットする。この際、幅１０ｍｍの
上下各端部ｅ１，ｅ２を図示しない引張試験機の上下チ
ャックにそれぞれ挟み固定する。また試験機の作動条件
を、クロスヘッドスピード５００ｍｍ／ｍｉｎ、チャッ
ク間距離１００ｍｍにセットする。しかる後、引張試験
機を作動させて接合部が破断するまで測定を行い、その
結果得られるチャートから破断点を読み取り、これを接
合部強度とする。Here, the strength of the joint portion according to the present invention can be measured as follows. That is, as shown in FIG. 6, (A) First, in the upper end portion 30U, the intermediate portion 30M, and the lower end portion 30B of the joint portion 30, a portion having a circumferential length of 60 mm and a width of 50 mm is cut out on the ventral side and the dorsal side, respectively. Is a test piece TS. (B) Next, the test piece TS is set in a tensile tester so as to be pulled in a direction corresponding to the circumferential direction of the diaper. At this time, the upper and lower end portions e1 and e2 having a width of 10 mm are respectively sandwiched and fixed by the upper and lower chucks of a tensile tester (not shown). The operating conditions of the tester are set to a crosshead speed of 500 mm / min and a chuck distance of 100 mm. After that, the tensile tester is operated to perform measurement until the joint is broken, and the breaking point is read from the chart obtained as a result, which is taken as the joint strength.
【００３０】他方、上述のような手法以外にも、接合部
３０の構成要素（上記例では、最外面シート５、押えシ
ート６、漏れ防止シート１１、伸縮部材７，８，９およ
び接着剤）の種類、有無、数、材質や、接合温度等を適
宜変更することによって本発明の条件を満足するパンツ
型紙おむつを製造することが可能であり、それらも本発
明に含まれることはいうまでもない。例えば、後述の実
施例からも明らかなように、接合部におけるシート相互
等の接着のための接着剤の使用量を減らすと、接合強度
を増加させることができる。よって、前述のような不織
布の選定と組み合わせて或いは単独で、接着剤の使用量
を縦方向に変化させることによって、具体的には接着剤
の使用量が上端部＞中間部＞下端部となるように構成す
ることによって本発明の条件を満足するパンツ型紙おむ
つとすることもできる。本発明における好ましい接着剤
の使用量は５〜１０ｇ／ｍ2である。On the other hand, in addition to the above method, the constituent elements of the joint portion 30 (in the above example, the outermost sheet 5, the pressing sheet 6, the leak prevention sheet 11, the elastic members 7, 8, 9 and the adhesive). It is possible to manufacture a pant-type disposable diaper satisfying the conditions of the present invention by appropriately changing the type, presence, number, material, joining temperature and the like, and it goes without saying that they are also included in the present invention. Absent. For example, as will be apparent from the examples described below, the bonding strength can be increased by reducing the amount of the adhesive used for bonding the sheets to each other at the bonding portion. Therefore, by changing the amount of adhesive used in the longitudinal direction in combination with the selection of the above-mentioned non-woven fabric or alone, specifically, the amount of adhesive used is: upper end>middle> lower end. With such a structure, a pants-type paper diaper satisfying the conditions of the present invention can be obtained. The preferable amount of the adhesive used in the present invention is 5 to 10 g / m 2 .
【００３１】[0031]
【実施例】表１に示すように、各種製造条件を変更しな
がら、前述の図１〜図４に示す構造のパンツ型使い捨て
紙おむつを各種製造し、ヒートシール接合部の強度測定
試験および接合部の剥離感の官能評価等を行った。EXAMPLES As shown in Table 1, various kinds of pants-type disposable paper diapers having the structures shown in FIGS. 1 to 4 were manufactured while changing various manufacturing conditions, and the strength measurement test of the heat-sealed joint and the joint were performed. The sensory evaluation of the peeling feeling was performed.
【００３２】特に表１における最外面シートの種類は、
下記のとおりである。
（従来例）ＰＰ繊維を用いスパンボンド法により形成し
た単層の不織布。
（比較例１，２及び実施例３）ＰＥ／ＰＥＴ繊維からな
る層とＰＰ／ＰＰ繊維からなる層とを有するようにエア
スルー法により形成した二層の不織布。
（実施例１）ＰＰ繊維を用いスパンボンド法により形成
した単層の不織布。
（実施例２）ＰＥ／ＰＥＴ繊維を用いエアスルー法によ
り形成した単層の不織布。
（実施例４，５）ＰＥ／ＰＥＴ繊維及びＰＥ／ＰＰ繊維
を混合して用いエアスルー法により形成した単層の不織
布。In particular, the types of outermost sheets in Table 1 are
It is as follows. (Conventional example) A single-layer non-woven fabric formed by a spun bond method using PP fibers. (Comparative Examples 1 and 2 and Example 3) A two-layer nonwoven fabric formed by an air-through method so as to have a layer made of PE / PET fiber and a layer made of PP / PP fiber. (Example 1) A single-layer non-woven fabric formed by a spun bond method using PP fibers. (Example 2) A single-layer nonwoven fabric formed by an air-through method using PE / PET fibers. (Examples 4 and 5) Single-layer nonwoven fabrics formed by an air-through method using PE / PET fibers and PE / PP fibers mixed.
【００３３】[0033]
【表１】 [Table 1]
【００３４】その結果を表２に示す。The results are shown in Table 2.
【表２】 [Table 2]
【００３５】このように、ＰＥ／ＰＥＴ−ＰＥ／ＰＰ混
合単層エアスルー不織布を用いた場合等、特定の場合に
おいて本発明の条件を満たすパンツ型紙おむつを製造す
るこができる。また、かかる本発明の条件を満たすパン
ツ型紙おむつは、その他の例と比べて接合部を剥離しや
すいことが判明した。As described above, a pant-type disposable diaper satisfying the conditions of the present invention can be manufactured in a specific case such as the case of using the PE / PET-PE / PP mixed single-layer air-through nonwoven fabric. Further, it has been found that the underpants-type paper diaper satisfying the conditions of the present invention is more likely to peel off the joint portion than other examples.
【００３６】[0036]
【発明の効果】以上のとおり、本発明によれば、使用後
においては力の弱い女性や老人であっても側縁接合部を
容易に剥がすことができ、なおかつ使用時においては側
縁接合部が十分に剥がれ難い、パンツ型使い捨て紙おむ
つとなる。As described above, according to the present invention, the side edge joint can be easily peeled off even after use, even for a weak woman or an elderly person, and the side edge joint can be used at the time of use. It is a pants-type disposable paper diaper that is hard to peel off.
【図１】パンツ型使い捨て紙おむつ例の内面側展開図で
ある。FIG. 1 is an inner side development view of an example of a pants-type disposable paper diaper.
【図２】図１のII−II線矢視図である。FIG. 2 is a view taken along the line II-II of FIG.
【図３】図１のIII−III線矢視図である。FIG. 3 is a view taken along the line III-III in FIG.
【図４】パンツ型使い捨て紙おむつ例の正面斜視図であ
る。FIG. 4 is a front perspective view of an example of a pants-type disposable paper diaper.
【図５】図１のV−V線矢視図である。5 is a view taken along the line VV of FIG.
【図６】側縁部接合強度測定試験の試験要領を概略的に
示す図である。FIG. 6 is a diagram schematically showing a test procedure of a side edge joint strength measurement test.
ＡＢ…吸収体、Ｆ…前身頃、Ｂ…後身頃、ＷＯ…ウエス
ト開口部、ＬＯ…レッグ開口部、１…透液性トップシー
ト、２…不透液性バックシート、３…吸収コア、５…最
外面シート、５ｉ…折り返し部分、６…押えシート、７
…腰下部伸縮部材、８…ウエスト伸縮部材、９…脚周り
伸縮部材、１１…漏れ防止シート、２０…バリヤーカフ
ス、２１…バリヤーシート、２６…背漏れガード部、３
０…側縁接合部、３０Ｕ…上端部、３０Ｂ…下端部、３
０Ｍ…中間部、７０…後処理テープ。AB ... Absorber, F ... Front body, B ... Back body, WO ... Waist opening, LO ... Leg opening, 1 ... Liquid-permeable topsheet, 2 ... Liquid-impermeable backsheet, 3 ... Absorption core, 5 ... outermost sheet, 5i ... folded portion, 6 ... presser sheet, 7
... lower waist elastic member, 8 waist elastic member, 9 leg elastic member, 11 leakage preventing sheet, 20 barrier cuffs, 21 barrier sheet, 26 back leakage guard portion, 3
0 ... side edge joining portion, 30U ... upper end portion, 30B ... lower end portion, 3
0M ... intermediate part, 70 ... post-processing tape.
フロントページの続き (56)参考文献 特開 平９−238980（ＪＰ，Ａ) 特開2000−166969（ＪＰ，Ａ) 特開 平８−182704（ＪＰ，Ａ) 特開 平７−227407（ＪＰ，Ａ) 特開 平７−75653（ＪＰ，Ａ) 特開 平10−137289（ＪＰ，Ａ) 特開2001−37810（ＪＰ，Ａ) 特開 平９−56747（ＪＰ，Ａ) 特開 平11−93054（ＪＰ，Ａ) 特開 平11−290381（ＪＰ，Ａ) 特開 平11−323663（ＪＰ，Ａ) 特開2000−140014（ＪＰ，Ａ) 特開2001−80016（ＪＰ，Ａ) 実開 平２−69906（ＪＰ，Ｕ) 特公 平３−21648（ＪＰ，Ｂ２) 特公 昭52−37097（ＪＰ，Ｂ１) 特表2000−510403（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A61F 13/15 - 13/84 A61F 5/44 Continuation of the front page (56) References JP-A-9-238980 (JP, A) JP-A 2000-166969 (JP, A) JP-A 8-182704 (JP, A) JP-A-7-227407 (JP, A) A) JP-A-7-75653 (JP, A) JP-A-10-137289 (JP, A) JP-A-2001-37810 (JP, A) JP-A-9-56747 (JP, A) JP-A-11- 93054 (JP, A) JP 11-290381 (JP, A) JP 11-323663 (JP, A) JP 2000-140014 (JP, A) JP 2001-8016 (JP, A) Flat 2-69906 (JP, U) Japanese Patent 3-21648 (JP, B2) Japanese Patent 52-37097 (JP, B1) Special Table 2000-510403 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) A61F 13/15-13/84 A61F 5/44
Claims (4)
ぞれ接合され、ウエスト開口部および左右一対のレッグ
開口部が形成された、パンツ型使い捨て紙おむつにおい
て、 前記接合部の接合強度が２．０〜６．０ｋｇ／５０ｍｍ
とされ、 前記接合部における、上端部の接合強度をＸ、下端部の
接合強度をＹ、およびこれら両端部間の中間部の接合強
度をＺとしたとき、 Ｘ＞Ｙ＞Ｚ の強度関係を有するように構成された、 ことを特徴とするパンツ型使い捨ておむつ。1. A pants-type disposable paper diaper in which both ventral side edges and dorsal side edges are joined together to form a waist opening and a pair of left and right leg openings. Strength is 2.0-6.0kg / 50mm
When the joint strength at the upper end of the joint is X, the joint strength at the lower end is Y, and the joint strength at the intermediate portion between the both ends is Z, the strength relationship of X>Y> Z A pants-type disposable diaper, which is configured to have.
Ｘ、下端部の接合強度をＹ、およびこれら両端部間の中
間部の接合強度をＺとしたとき、 １．２Ｚ≦Ｘ≦３．０Ｚ １．０Ｚ＜Ｙ≦２．０Ｚ の強度関係を有するように構成された、請求項１記載の
パンツ型使い捨て紙おむつ。2. When the joint strength of the upper end portion of the joint portion is X, the joint strength of the lower end portion thereof is Y, and the joint strength of the intermediate portion between the both end portions is Z, 1.2Z ≦ X ≦ 3 The pants-type disposable paper diaper according to claim 1, configured to have a strength relationship of 0.0Z 1.0Z <Y ≦ 2.0Z.
含むおむつ最外面を構成する最外面シートが複数種の繊
維を混合状態で含有するエアスルー不織布シートにより
形成され、この最外面シートの背側および腹側が前記ウ
エスト開口部においておむつ最内面にそれぞれ折り返さ
れ、その折り返し内面部分の縦方向幅が３０〜７０ｍｍ
とされ、 前記接合部における上端部は、前記最外面シートのおむ
つ外面部分および前記折り返し内面部分を含み、その他
の部分は前記最外面シートのおむつ外面部分は含むが折
り返し内面部分は含まないように構成された、 請求項１または２記載のパンツ型使い捨て紙おむつ。3. The outermost surface sheet forming the outermost surface of the diaper including both side edges on the back side and the ventral side to be joined is formed of an air-through nonwoven fabric sheet containing a plurality of kinds of fibers in a mixed state, and the outermost surface is formed. The back side and the ventral side of the seat are folded back to the innermost surface of the diaper at the waist opening, and the width of the folded back inner surface portion in the longitudinal direction is 30 to 70 mm.
And the upper end portion of the joint portion includes the diaper outer surface portion and the folded inner surface portion of the outermost sheet, and the other portions include the diaper outer surface portion of the outermost sheet but do not include the folded inner surface portion. The pants-type disposable paper diaper according to claim 1 or 2, which is configured.
ｔｅｘ以下のＰＥ／ＰＥＴ繊維を６０〜９０重量％およ
び太さが４ｄｔｅｘ以下のＰＥ／ＰＰ繊維を４０〜１０
重量％それぞれ含有するエアスルー不織布を用いた、請
求項３記載のパンツ型使い捨て紙おむつ。4. The air-through nonwoven fabric has a thickness of 4d.
60 to 90% by weight of PE / PET fiber of tex or less and 40 to 10 of PE / PP fiber of 4 dtex or less in thickness.
The pants-type disposable paper diaper according to claim 3, wherein the air-through non-woven fabrics each containing by weight are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001099867A JP3457650B2 (en) | 2001-03-30 | 2001-03-30 | Pants-type disposable diapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001099867A JP3457650B2 (en) | 2001-03-30 | 2001-03-30 | Pants-type disposable diapers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002291801A JP2002291801A (en) | 2002-10-08 |
| JP3457650B2 true JP3457650B2 (en) | 2003-10-20 |
Family
ID=18953364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001099867A Expired - Fee Related JP3457650B2 (en) | 2001-03-30 | 2001-03-30 | Pants-type disposable diapers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3457650B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4490405B2 (en) | 2006-09-29 | 2010-06-23 | 大王製紙株式会社 | Pants-type disposable diapers |
| JP4986596B2 (en) * | 2006-12-11 | 2012-07-25 | 花王株式会社 | Pants-type disposable diapers |
| JP5075901B2 (en) * | 2009-09-30 | 2012-11-21 | 大王製紙株式会社 | Absorbent articles |
| JP6419012B2 (en) * | 2015-03-31 | 2018-11-07 | ユニ・チャーム株式会社 | Disposable wearing items |
-
2001
- 2001-03-30 JP JP2001099867A patent/JP3457650B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002291801A (en) | 2002-10-08 |
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