JPH05228177A - Panties-shaped physiological article having novel elastic composite in stretching part - Google Patents
Panties-shaped physiological article having novel elastic composite in stretching partInfo
- Publication number
- JPH05228177A JPH05228177A JP4035467A JP3546792A JPH05228177A JP H05228177 A JPH05228177 A JP H05228177A JP 4035467 A JP4035467 A JP 4035467A JP 3546792 A JP3546792 A JP 3546792A JP H05228177 A JPH05228177 A JP H05228177A
- Authority
- JP
- Japan
- Prior art keywords
- elastic
- elastic composite
- composite
- pants
- woven fabric
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、生理用品、例えば子供
用オムツ、大人用オムツ、パンツ型失禁処理用品に関す
るもので、新規な弾性複合体をその伸縮部に備えてなる
パンツ状生理用品である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sanitary products such as diapers for children, diapers for adults, and pants-type incontinence treatment products, and is a pants-like sanitary product comprising a novel elastic composite in its elastic portion. is there.
【０００２】[0002]
【従来の技術】市販されている弾性体を腰部に備えた生
理用品の代表として、小児用オムツを例にして説明する
と、粘着テープ等のいわゆる結束具５を備えた図３１の
ような構造を持ったものと、下着のような結束具のない
図３２のような構造を持ったものに大別される。即ち図
３１の左図のように１，２がそれぞれ背部、腹部に於け
る弾性体であり、これが前後の腰部端末部３，４に結合
され、背部の腰部側端部に結束具５である結束用テープ
がついている。この結束具を結束させると図３１の右図
のようにパンツに変化する。一方結束具のない型では図
３２のように背部、腹部端末部全域にわたって弾性体
６，７が備えられている。2. Description of the Related Art A diaper for a child will be described as a representative of commercially available sanitary products having an elastic body on the lower back, and a structure as shown in FIG. 31 having a so-called binding tool 5 such as an adhesive tape will be described. They are roughly divided into those with a structure as shown in FIG. 32 that does not have a binding tool such as underwear. That is, as shown in the left diagram of FIG. 31, 1 and 2 are elastic bodies in the back and abdomen, respectively, which are connected to the front and rear waist end portions 3 and 4, and a binding tool 5 at the waist end of the back. A binding tape is attached. When this binding tool is bound, it changes into pants as shown in the right figure of FIG. On the other hand, in the type without a binding tool, elastic bodies 6 and 7 are provided over the entire area of the back and abdominal end portions as shown in FIG.
【０００３】図３１および図３２のオムツの腰部の構成
を模式図によって示すと、図３３，図３４のようにな
る。即ち腰部に弾性体を備える範囲を考えると背部Ａ，
腹部Ｂ，腰部端末部Ｃ，結束部Ｄ，両側部Ｅとしたとき
に、 １）Ａ，Ｂ，Ｃ，Ｄ，Ｅの部分のみに弾性体を備えた製
品 ２）Ａ＋Ｂ，Ａ＋Ｃ，Ａ＋Ｄ，Ａ＋Ｅ２つの部位に渡っ
て弾性体を備えた製品 ３）Ａ＋Ｂ＋Ｃ，Ａ＋Ｂ＋Ｅの３つの部位に渡って弾性
体を備えた製品が考えられる。The constitution of the waist of the diaper shown in FIGS. 31 and 32 is schematically shown in FIGS. 33 and 34. That is, considering the range in which the waist has an elastic body, the back A,
When the abdomen B, the waist end portion C, the binding portion D, and the side portions E are defined as follows: 1) A, B, C, D, and E provided with elastic bodies only 2) A + B, A + C, A + D, A + E2 Product with elastic body over three parts 3) A product with elastic body over three parts A + B + C and A + B + E is conceivable.
【０００４】結束部Ｃにエラスチック性を備えた製品は
すでにヒンジテープとして市販されているが、本発明の
対象とは異なるのでＤの部位については除外することに
する。図３１のような結束具を備えた製品に於いては弾
性体の配座を最適にするためには図３３のＡ＋Ｃ，ある
いはＡ＋Ｂ＋Ｃの部位の伸縮性を最適ならしめることが
必要である。しかしＢの腹部に接する腰部端末部は結束
具が固定される部分（テープランディングゾーン）を有
するため伸縮性を大きくして変形を大きくすることは望
ましくない。従って結束具を備えた製品の場合には図３
３のＡ＋Ｃの伸縮性を最適化することになる。A product having an elastic property in the binding portion C is already marketed as a hinge tape, but since it is different from the object of the present invention, the portion D will be excluded. In a product provided with a binding tool as shown in FIG. 31, it is necessary to optimize the elasticity of the area A + C or A + B + C in FIG. 33 in order to optimize the conformation of the elastic body. However, since the waist end portion in contact with the abdomen of B has a portion (tape landing zone) to which the binding tool is fixed, it is not desirable to increase the elasticity and increase the deformation. Therefore, in the case of a product equipped with a tying device, the structure shown in FIG.
Therefore, the elasticity of A + C of 3 will be optimized.
【０００５】図３５にはＡ，Ｂ，Ｃ部分の切断図を示し
た。さて、もしＡ＋Ｃの伸縮性の最適化するためには
Ａ，Ｃ部分が収縮、伸展可能な状態に至らしめなければ
ならないが、Ａ部は図３５に示したように固い構造の吸
収体の影響とホットメルトにより結合されたバックシー
ト、トップシートの抵抗により、伸縮状態にするのは極
めてむずかしい。Ｃ部分もＡに比較すれば収縮しやすい
が、抵抗を有することになる。FIG. 35 shows a cutaway view of portions A, B and C. Now, in order to optimize the stretchability of A + C, the A and C parts must reach a state in which they can contract and extend, but the A part is affected by the absorber having a solid structure as shown in FIG. Due to the resistance of the backsheet and topsheet that are bonded together by hot melt, it is extremely difficult to make them stretchable. The C portion also tends to contract as compared with the A portion, but has resistance.
【０００６】図３２のような結束具を持たない製品に於
いても弾性体の配座を最適にするためには図３１のＡ＋
Ｂ＋Ｃの部位の伸縮性を最適ならしめることが必要にな
る。このためにはＡ，Ｂ，Ｃの部位が収縮、伸展可能な
状態に至らしめなければならないが図３５に示したよう
に、Ａ，Ｂは固い吸収体に加うるにホットメルトにより
結合されたバックシート、トップシートの抵抗により伸
縮状態をもたらすのは極めてむずかしい。Ｃ部分にして
もＡと比較すれば収縮しやすいが抵抗を持つことにな
る。そのためこのようなＡ，Ｂ，Ｃ部の影響をいかに排
除するかが、真に機能する弾性体を備えたオムツ設計に
関する最大の課題である。In order to optimize the conformation of the elastic body even in a product having no binding tool as shown in FIG. 32, A + in FIG.
It is necessary to optimize the elasticity of the B + C part. For this purpose, it is necessary to reach a state where the A, B and C parts can be contracted and stretched, but as shown in FIG. 35, A and B were bonded by a hot melt in addition to the solid absorbent body. It is extremely difficult to bring the stretched state by the resistance of the backsheet and topsheet. Compared to A, the C part easily contracts but has resistance. Therefore, how to eliminate such influences of the A, B, and C parts is the biggest problem regarding the design of a diaper having a truly functioning elastic body.
【０００７】Ａ，Ｂ，Ｃに充分伸縮弾性を与えて図３
６、図３７のような、可逆性を与えるためにはさまざま
な試みが行われてきた。その主な考え方を示すと下記表
１のとおりである。By giving sufficient expansion and contraction elasticity to A, B and C, FIG.
6, various attempts have been made to provide reversibility as shown in FIG. The main idea is shown in Table 1 below.
【０００８】[0008]
【表１】 [Table 1]
【０００９】[0009]
【発明が解決しようとする課題】それでは、吸収機能な
どの機能の低下をまねくことなく、しかもコストアップ
をもたらすことなく、これらの問題を解決するには、な
んらかの手段により腰部の端末部の基材と弾性体とも直
接接触させることなく、弾性体のもつ伸縮力を１００％
利用することができれば理想的である。それに近いやり
方とは、いわば端末部基材から弾性体を浮かすようにつ
り下げるフローティング構造を保つことが望ましい。フ
ローティング構造を形成するためには図３８の上に示す
ように支点はできるだけ少い方がよいが、全領域に渡っ
て均等な伸縮分布をもたせるためには図３８の下に示す
ように支点の数も必要になる。これらの支点の間隔につ
いては用いられる弾性体の性能、腰部端末部の性状によ
って異なってくる。SUMMARY OF THE INVENTION Then, in order to solve these problems without deteriorating the functions such as absorption function and increasing the cost, the base material of the terminal part of the lumbar region is to be solved by some means. The elastic force of the elastic body is 100% without directly contacting with the elastic body.
It would be ideal if it could be used. A method close to that is, so to speak, desirable to keep a floating structure in which an elastic body is suspended so as to float from the terminal base material. In order to form a floating structure, it is preferable that the number of fulcrums be as small as possible as shown in the upper part of FIG. 38. However, in order to have a uniform distribution of expansion and contraction over the entire region, the fulcrum of You also need a number. The distance between these fulcrums depends on the performance of the elastic body used and the properties of the waist terminal.
【００１０】本発明では、このようなフローティング構
造を保って弾性体を取付けることによって、オムツの吸
収機能はなんら損うことなく、十分な弾性機能をもた
せ、しかもこのような構成のものを安価に提供するもの
である。In the present invention, by attaching the elastic body while maintaining such a floating structure, the diaper can be provided with a sufficient elastic function without impairing the absorbing function, and such a structure can be manufactured at low cost. Is provided.
【００１１】[0011]
【課題を解決するための手段】本発明は、緩和状態のシ
ート状弾性体の両面又は片面に不織布基材を、結合部と
結合部との間にひだを形成する非結合部を有するように
複合してなる弾性複合体を、パンツの伸縮所望部位と、
不織布基材側において接合させてなることを特徴とする
新規な弾性複合体を伸縮部に備えたパンツ状生理用品で
ある。According to the present invention, a non-woven fabric substrate is provided on both sides or one side of a sheet-like elastic body in a relaxed state, and a non-bonding portion forming a fold is formed between the bonding portions. The elastic composite that is composited with the desired stretchable part of the pants,
A pants-like sanitary article having a stretchable part, which comprises a novel elastic composite characterized by being bonded on the side of a non-woven fabric substrate.
【００１２】これを具体的に図面によって説明すると、
図１において、端末部とは、前述したオムツにおける
Ａ，Ｂ，Ｃ，Ｅ部に相当し、これに弾性体を複数の支点
によって吊った状態を示しているが、本発明ではこの状
態を実現するために端末部に、緩和状態の弾性体の片側
に不織布基材がひだを形成するように結合部において結
合されている弾性体と不織布基材との弾性複合体を接合
させることによって、ひだの部分が上記の支点に相当す
るフローティング構造を形成する。これをフローティン
グギャザーという。しかしこの場合は、弾性体面が人体
の肌に直接接触することとなり、必ずしも快適でない場
合がある。これを防ぐために、図２に示すように、表面
シートと弾性体との間に同じようなフローティング構造
を形成させればよい。そのためには上記図１と同様の不
織布基材を弾性体の両面に形成すればよい。この場合に
は、不織布基材自体が肌触りがよいので、表面シートは
必ずしも貼着しなくてもよい。This will be specifically described with reference to the drawings.
In FIG. 1, the terminal portion corresponds to the A, B, C, and E portions of the diaper described above, and shows a state in which an elastic body is hung by a plurality of fulcrums, but this state is realized in the present invention. In order to do so, the pleats are joined by joining the elastic composite of the elastic body and the non-woven fabric base material, which are joined at the joint part so that the non-woven fabric base material forms pleats on one side of the elastic body in the relaxed state. Forms a floating structure corresponding to the above fulcrum. This is called floating gather. However, in this case, the elastic body surface comes into direct contact with the skin of the human body, which may not always be comfortable. In order to prevent this, as shown in FIG. 2, a similar floating structure may be formed between the topsheet and the elastic body. For that purpose, the same non-woven fabric substrate as shown in FIG. 1 may be formed on both sides of the elastic body. In this case, since the non-woven fabric base material itself has a good feel to the skin, the topsheet need not necessarily be attached.
【００１３】そのためには、緩和状態の弾性体の両側に
不織布基材がひだを形成するように結合されてなる弾性
体と不織布基材との弾性複合体を接合させることによっ
てフローティングギャザーを形成させることができる。
このようなフローティングギャザーをパンツの伸縮所望
部位例えば腰部端末部に形成するには、図３に示すよう
な工程を経て行なわれる。すなわち、パンツの腰部端末
部（１）に対して弾性複合体（２）を用意する。その弾
性複合体を緊張して、（３）に示すように、その緊張弾
性複合体を緊張下で腰部端末部と不端布基体側で接合す
る。この接合体の緊張状態を緩和すると（４）に示すフ
ローティングギャザーが形成される。To this end, a floating gather is formed by joining an elastic composite of an elastic body and a non-woven fabric base material, which are formed by connecting a nonwoven fabric base material on both sides of the elastic body in a relaxed state so as to form pleats. be able to.
In order to form such a floating gather on a desired stretchable portion of the underpants, for example, a waist end portion, a process as shown in FIG. 3 is performed. That is, the elastic composite body (2) is prepared for the waist end portion (1) of the pants. The elastic composite is tensioned, and as shown in (3), the elastic composite is joined to the waist end portion on the end cloth base side under tension. When the tension state of this joined body is relaxed, the floating gather shown in (4) is formed.
【００１４】フローティングギャザーの性能は用いられ
る両側にひだを有する弾性複合体の性能によって決定ず
けられる。まずこの弾性複合体について説明する。The performance of the floating gathers is determined by the performance of the elastic composite with the pleats on both sides used. First, the elastic composite will be described.
【００１５】弾性複合体とは図４に示したように不織布
１１，１２にシート状弾性体１３を部分的に接合してな
る複合体であり、この弾性複合体の性能は構成する素材
即ちひだになる不織布部分１１，１２と芯になる弾性体
１３とその接合状態即ち接合面積とひだの深さによって
決定される。As shown in FIG. 4, the elastic composite is a composite in which the sheet-like elastic body 13 is partially bonded to the nonwoven fabrics 11 and 12, and the performance of this elastic composite is a material or pleats constituting the elastic composite. It is determined by the non-woven fabric parts 11 and 12 to be the core, the elastic body 13 to be the core, the bonding state, that is, the bonding area and the depth of the folds.
【００１６】まず構成する素材について説明する。First, the constituent materials will be described.
【００１７】不織布部分を構成する不織布にはさまざま
なタイプ、即ち乾式、湿式、スパンボンド、水流交絡
法、メルトブローン等の後述のような製法によって、不
織布の適切な選択が必要になる。いわゆる延伸ラミネー
ト法による場合には伸びの少ない不織布が用いられ、特
公開昭５９−５９９０１（ＵＳ ５０２３６６）の方法
による場合には縦あるいは横方向に伸びの大きな不織布
を用いるのが好ましい。両面を形成する不織布は使用す
る状態、接着性、肌への刺激性等によって不織布の素材
を変えてもよいが、均一な収縮状態を保つには両側が同
じ素材が望ましい。芯になるシート状弾性体は、いわゆ
るゴム弾性を持つ素材から選ばれるが、それらは天然ゴ
ム、合成ゴム、ポリウレタン類、ポリオレフィンエラス
トマー類から単独あるいは複合ブレンドして構成される
フィルム状、不織布状、フォーム状等のシート状の弾性
体である。For the non-woven fabric forming the non-woven fabric portion, various types, that is, a dry process, a wet process, a spun bond, a hydroentangling process, a melt blown process, and the like, which will be described later, require proper selection of the non-woven fabric. In the case of the so-called stretch laminating method, a non-woven fabric having a small elongation is used, and in the case of the method of Japanese Patent Publication No. 59-59901 (US 502366), it is preferable to use a non-woven fabric having a large elongation in the longitudinal or transverse direction. The non-woven fabric forming both sides may be made of different materials depending on the condition of use, adhesiveness, irritation to the skin, etc. However, the same material on both sides is desirable to maintain a uniform contracted state. The sheet-like elastic body to be the core is selected from materials having so-called rubber elasticity. They are a natural rubber, a synthetic rubber, a polyurethane, a polyolefin elastomer, or a film or non-woven fabric composed of a single or a composite blend thereof. It is a sheet-like elastic body such as foam.
【００１８】しかし本発明のフローティングギャザーの
特徴は弾性体の本来持つ性能を十二分に発揮できること
にあり、比較的コストの安い融点が低く、自己接着を起
こしやすくしかも扱いにくいポリオレフィン系エラスト
マーが本発明には好んで用いられる。However, the characteristic feature of the floating gather of the present invention is that the inherent performance of the elastic body can be fully exerted, and the relatively low cost, low melting point, easy self-adhesion and difficult to handle polyolefin elastomer is the main feature. It is preferably used in the invention.
【００１９】それらは例えばＥ．Ｖ．Ａ．ＶＬＬＤＰ
Ｅ，エチレン・プロピレンエラストマー，エチレン・メ
チルアクリシートエラストマー，ＳＥＢＳ等の単独フィ
ルムあるいはポリマーブレンドフィルム，あるいは上記
ウレタンとポリオレフィン系エラストマーとの共押出し
フィルム等である。それは本発明の特徴である不織布と
の複合により、大幅にハンドリング性能が向上するため
である。They are described, for example, in E. V. A. VLLDP
E, an ethylene / propylene elastomer, an ethylene / methylacrylate sheet elastomer, a single film such as SEBS or a polymer blend film, or a coextruded film of the above urethane and a polyolefin elastomer. This is because the handling performance is significantly improved by the combination with the nonwoven fabric, which is a feature of the present invention.
【００２０】ついで不織布と弾性体の接合状態について
説明する。Next, the bonded state of the nonwoven fabric and the elastic body will be described.
【００２１】図５で示すように不織布と弾性体の接合部
位（Ａ）と非接合部位（Ｂ）とから構成され、接合部と
非接合部との割合を示すＡ／Ａ＋Ｂ×１００（％）は５
０％以下、好ましくは４０％〜５％が望ましい。更に望
ましくは４０％〜１０％である。５％未満では接合強度
を維持することが難しく、又５０％を越えると伸縮性を
損なう結果となる。As shown in FIG. 5, it is composed of a bonded portion (A) and a non-bonded portion (B) of a non-woven fabric and an elastic body, and shows the ratio of the bonded portion and the non-bonded portion A / A + B × 100 (%) Is 5
0% or less, preferably 40% to 5% is desirable. More preferably, it is 40% to 10%. If it is less than 5%, it is difficult to maintain the bonding strength, and if it exceeds 50%, the stretchability is impaired.
【００２２】図６，図７はそれぞれ緩和状態と伸長状態
を示したものであり、伸縮能力の尺度となる、不織布の
ひだの長さ（Ｑ）と弾性体の緩和時の長さ（Ｐ）の割合
Ｑ／Ｐで示されるがその値は１．５以上あることが必要
であり、好ましくは２．０〜４．０である。１．５未満
であると弾性体としての魅力の乏しいものであり、４．
０を越えるのは理論上可能であるとしても実使用上の意
味は少ない。FIGS. 6 and 7 show the relaxed state and the stretched state, respectively. The length of the folds (Q) of the non-woven fabric and the length of the elastic body at the time of relaxation (P), which are measures of the stretchability, are shown. The ratio is represented by Q / P, but the value is required to be 1.5 or more, preferably 2.0 to 4.0. When it is less than 1.5, it is not attractive as an elastic body.
Even if it is theoretically possible to exceed 0, it has little meaning in practical use.
【００２３】弾性体に接合された不織布の形態は図８，
図９に示すように、その接合のピッチ、ひだの深さ等は
さまざまに変えることは可能であるが、一般的には上
面、下面の不織布とも同じピッチ、同じ深さを保ことが
効率的である。しかし後述するように、オムツの腰部の
構成材との接合を行う場合、腹部、背部に相当する部分
と側端部との伸長状態を調節するために、ひだの深さを
変えることや、腰部材料との接合強度を大きくし、一方
フローティングギャザーとしての機能を十分に発揮する
目的で、接合に関与する側のひだの深さを、接合に関与
しない側のひだの深さに対して深くすることも有効な方
法である。The form of the non-woven fabric bonded to the elastic body is shown in FIG.
As shown in FIG. 9, the pitch of the joint, the depth of the folds, etc. can be changed in various ways, but generally it is efficient to keep the same pitch and the same depth for both the upper and lower nonwoven fabrics. Is. However, as will be described later, when joining the components of the waist of the diaper, changing the depth of the folds and adjusting the waist to adjust the stretched state of the abdomen, the part corresponding to the back and the side end. The folds on the side involved in joining are deeper than the folds on the side not involved in joining for the purpose of increasing the joining strength with the material and at the same time exerting the function as a floating gather sufficiently. That is also an effective method.
【００２４】弾性体に対する上部不織布と、下部不織布
の接合点の相対的位置は生産性や装置精度上許容される
かぎりほぼ一致させることが望ましい。It is desirable that the relative positions of the joining points of the upper nonwoven fabric and the lower nonwoven fabric with respect to the elastic body are substantially the same as long as the productivity and the accuracy of the apparatus allow.
【００２５】しかし、後述する弾性体の存在状態によっ
ては、この相対的位置関係は、あまり重要ではない。こ
の間の理由を明確にするため、まず弾性体の存在状態に
ついて説明する。However, this relative positional relationship is not so important depending on the state of existence of the elastic body described later. In order to clarify the reason for this, the existence state of the elastic body will be described first.
【００２６】上下両面のひだを有する不織布に対して、
芯になる弾性体は図１０に示す一層である場合が一般的
であるが、図１１に示すように多層である場合もある。
これはたとえば片側にひだを有するような弾性体を弾性
体面で重ね合わせたり、接合したりした場合である。そ
の接合状態は、その接合面に自由度を持つような接合が
理想的であり、離れない程度の比較的弱い接合状態を保
つことによって、良好な伸縮弾性を保つことができる。
たとえば部分的な接着さらに望ましくは前述したような
ポリオレフィン系エラストマーの比較的低融点エラスト
マーの有する自己接着による自着性を利用すると極めて
良好な伸縮性を有する両面にひだを有する複合弾性体が
得られる。その材質、状態を示したのが表２である。す
なわち、単一層の弾性体の両面の不織布の接合点の位置
を変えると、弾性複合体の伸縮性は著しく阻害される
が、２層の自着性により重ね合わされた弾性体の場合は
両面の不織布の接合点を変えても殆ど影響がない。For a non-woven fabric having folds on both the upper and lower sides,
The elastic body to be the core is generally a single layer as shown in FIG. 10, but may be a multi-layer as shown in FIG.
This is the case, for example, when elastic bodies having pleats on one side are superposed or joined on the elastic body surface. Ideally, the joint state should be such that the joint surface has a degree of freedom, and by maintaining a relatively weak joint state that does not separate, good stretch elasticity can be maintained.
For example, partial adhesion, and more desirably, by utilizing the self-adhesiveness due to self-adhesion of the relatively low melting point elastomer of the polyolefin-based elastomer as described above, a composite elastic body having pleats on both sides having extremely good stretchability can be obtained. .. Table 2 shows the material and state. That is, if the positions of the joining points of the non-woven fabrics on both sides of the single-layer elastic body are changed, the elasticity of the elastic composite is significantly impaired, but in the case of the elastic body laminated by two layers of self-adhesiveness, Changing the joining point of the non-woven fabric has almost no effect.
【００２７】[0027]
【表２】 [Table 2]
【００２８】伸縮性のコントロールをするために部位に
よって伸長度をかえた弾性複合体の組合せの例として、
側端部（上下端部）と中央とを伸長度をかえる場合につ
いて説明する。As an example of a combination of elastic composites whose elongation is varied depending on the site for controlling stretchability,
A case in which the degree of extension is changed between the side end portions (upper and lower end portions) and the center will be described.
【００２９】表３は伸長状態と緩和状態とそれに伴う伸
長限界を示したものである。例えば側端部を低伸縮部、
中央部に高伸縮部を配するようにするには、図１２のよ
うな接合構造を持つ弾性複合体を利用することによっ
て、両端部は伸縮率が小さく、中央部が伸縮率の大きな
構造の複合弾性体が得られる。Table 3 shows the stretched state, the relaxed state, and the stretch limit associated therewith. For example, the side end part is a low elasticity part,
In order to arrange the high-elasticity part in the central part, by using an elastic composite having a joint structure as shown in FIG. 12, both ends have a small expansion-contraction ratio and a central part has a large expansion-contraction ratio. A composite elastic body is obtained.
【００３０】[0030]
【表３】 [Table 3]
【００３１】上述した弾性複合体と求める製品本体の必
要とされる部位に対する接合について説明する。表４は
弾性体をオムツの腰部に接合した場合の伸長前（Ｌ1）
と伸長後（Ｌ2）と前後の伸長率を比較したものであ
る。Joining of the above-described elastic composite to a required portion of the desired product body will be described. Table 4 shows the elastic body joined to the waist of the diaper before stretching (L 1 ).
And the elongation rate before and after stretching (L 2 ) are compared.
【００３２】[0032]
【表４】 [Table 4]
【００３３】（１）はいわゆる市販のオムツに見られる
ようなストレッチ ラミネートで得られる状態であり、
（２）と（３）は全く同じ構造を持った片側にひだを持
った弾性体を（２）は通常の方法で接合した場合、
（３）はひだを持った不織布側フローティング構造を持
つように接合した場合であり、（４）は両側にひだを持
った本発明の弾性複合体を接合した場合を示す。接合方
法によって（２）のような効果しか持たないものが、フ
ローティング構造を持たせることによって（３）、
（４）のように大幅に伸長率の増大を見せることがよく
わかる。これが本発明のフローティング・ギャザーの一
番大きな特徴である。(1) is a state obtained by a stretch laminate such as that found in so-called commercial diapers,
(2) and (3) are exactly the same structure, and one side has an elastic body with a fold, (2) is joined by the usual method,
(3) shows a case where the elastic composite of the present invention having pleats on both sides is joined, and (4) shows a case where the elastic composite of the present invention having pleats on both sides is joined. Depending on the joining method, it has only the effect of (2), but by providing a floating structure (3),
It can be clearly seen that the expansion rate greatly increases as in (4). This is the greatest feature of the floating gather of the present invention.
【００３４】本発明になる弾性複合体と製品本体部位と
結合させて、フローティング構造を持った弾性体を形成
する場合、図１３ののように弾性複合体のどちらかの
片面の不織布のひだ部分と結合し、他の不織布は露出さ
せて、そのソフトでパルキーな不織布の感触を利用する
場合もあるが、のように両側の不織布に結合する場合
もある。When the elastic composite according to the present invention and the product main body are combined to form an elastic body having a floating structure, as shown in FIG. 13, a fold portion of the nonwoven fabric on one side of the elastic composite. In some cases, the other non-woven fabric is exposed and the feel of the soft and bulky non-woven fabric is utilized, but in some cases, the non-woven fabric is bonded to both non-woven fabrics.
【００３５】製品本体部位と不織布部分との結合状態は
その結合面積を加えることによって、弾性複合体のひだ
構造を製品本体部位に転写することも可能である。その
状態を示したのが図１４である。It is also possible to transfer the fold structure of the elastic composite to the product body part by adding the bonding area of the bonded state of the product body part and the non-woven fabric part. FIG. 14 shows this state.
【００３６】本発明になるフローティング状弾性体に用
いられる弾性複合体の製造例について説明する。A production example of an elastic composite body used for the floating elastic body according to the present invention will be described.
【００３７】製造すべき弾性複合体は、その使用部位、
目的によって縦方向に伸縮性を持つものと、横方向に伸
縮性を持つものに分けられる。図１５はそれを模式的に
示したものである。図１５（ａ）は縦方向に伸縮性をも
ち、たとえばオムツの股ギャザー部に用いられ、図１５
（ｂ）は横方向に伸縮性をもち、たとえば腰部ギャザー
部に用いられる。さてこれら弾性複合体の製造法の１つ
としては図１６に示したような工程で製造する場合であ
って、その製造プロセスとしては図１７に示したものに
なる。即ち弾性基材をロール１４、ロール１５で引き出
し、ロール１４、１５とロール１６、１７との間のスピ
ードをかえて伸長する。伸長状態で不織布を上、下に重
ね合せたのち凸起を有し、しかも加熱された図１８のよ
うなパターンを持ったロール１８、１９を用いて、横方
向に間欠的に熱結合あるいは超音波接着を行う。これを
緩和すると本発明に用いられる弾性複合体が得られる。
図１９に示した工程は伸長性の不織布の特性を利用した
製法であって、製造プロセスとしては図２０に示したも
のになる。The elastic composite to be produced has a site of use,
Depending on the purpose, it is divided into those that have elasticity in the vertical direction and those that have elasticity in the horizontal direction. FIG. 15 schematically shows it. FIG. 15 (a) has elasticity in the vertical direction, and is used, for example, in the crotch gather portion of a diaper.
(B) has elasticity in the lateral direction and is used, for example, in the waist gather portion. Now, as one of the manufacturing methods of these elastic composites, there is a case of manufacturing by the process as shown in FIG. 16, and the manufacturing process is as shown in FIG. That is, the elastic base material is pulled out by the rolls 14 and 15, and stretched by changing the speed between the rolls 14 and 15 and the rolls 16 and 17. Using the rolls 18 and 19 that have the protrusions and have the pattern shown in FIG. Apply sonic bonding. When this is relaxed, the elastic composite used in the present invention is obtained.
The process shown in FIG. 19 is a manufacturing method utilizing the characteristics of a stretchable nonwoven fabric, and the manufacturing process is as shown in FIG.
【００３８】即ち弾性部材を芯にして２枚の不織布を供
給する。その状態で図２１で示すような表面を持った加
熱突起ロールを通過させ、冷却ロールにより構造固定し
たのち、延伸ロールにより不織布伸長限界に近い点まで
延伸する。そののち緩和すると本発明に用いられる弾性
複合体が得られる。図２２に示した工程は片側にのみひ
だのある弾性複合体をまずつくり、それを２枚接合する
ことによって、両側にひだを持つ弾性複合体をつくる方
法である。この方法のフローシートは図２２に示した
が、まず緩和した状態の片側にひだを持った弾性複合体
をつくり、それをまた伸長し、弾性部材面相互を結合
し、緩和する方法であるが、図２２の矢印で示すよう
に、まず片側に不織布基材と弾性基材とを部分結合し、
伸長時に２層を結合する方法もある。しかし更に簡単な
工程は図２３に示すように部分結合した不織布と弾性部
材との結合体をそのまま２層を弾性部材面で接合しその
のち伸長、緩和すれば極めて簡単に目的とする弾性複合
体が得られる。図２４の工程は上記部分結合した不織布
と弾性部材との結合体の連続製造法を示した。即ち２
１、２２より溶融押出しされた弾性部材を２３で冷却
後、不織布を圧着ののち図２５のようなグリッド表面を
持った加熱ロール２６を通過させると、不織布と弾性部
材の結合体が得られる。この結合体を２層接合後伸長、
緩和すれば目的とする弾性複合体が得られる。That is, two non-woven fabrics are fed with the elastic member as a core. In this state, a heating projection roll having a surface as shown in FIG. 21 is passed through, the structure is fixed by a cooling roll, and then stretching is performed by a stretching roll to a point close to the nonwoven fabric stretching limit. When it is then relaxed, the elastic composite used in the present invention is obtained. The process shown in FIG. 22 is a method of first forming an elastic composite having pleats on only one side, and then joining two of the elastic composites to form an elastic composite having pleats on both sides. The flow sheet of this method is shown in FIG. 22. First, an elastic composite body having a fold on one side in a relaxed state is formed, and the elastic composite body is stretched again to bond the elastic member surfaces to each other. As shown by the arrow in FIG. 22, first, a non-woven fabric substrate and an elastic substrate are partially bonded to one side,
There is also a method of joining two layers during stretching. However, in a simpler process, as shown in FIG. 23, a combination of a partially bonded non-woven fabric and an elastic member is bonded to two layers of the elastic member surface as they are, and then stretched and relaxed, so that the desired elastic composite is obtained. Is obtained. The process of FIG. 24 shows a continuous manufacturing method of the joined body of the partially joined nonwoven fabric and the elastic member. Ie 2
After the elastic member melt-extruded from Nos. 1 and 22 is cooled at 23, the nonwoven fabric is pressure-bonded and then passed through a heating roll 26 having a grid surface as shown in FIG. 25 to obtain a bonded body of the nonwoven fabric and the elastic member. This bonded body is stretched after joining two layers,
When relaxed, the desired elastic composite is obtained.
【００３９】上述した弾性複合体を用いひだになった不
織布と製品本体とを結合すれば、いわゆるフローティン
グ構造を持った弾性体が得られるわけであるが、工業的
製造工程への応用例を図で説明しておく。An elastic body having a so-called floating structure can be obtained by connecting the pleated non-woven fabric with the product body using the elastic composite described above. I will explain.
【００４０】図２６は紙おむつ製造時の股部ギャザー部
の形成に際して、縦方向に伸縮性を有する本発明になる
弾性複合体を応用する工程図の一例を示したものであ
る。FIG. 26 shows an example of a process diagram for applying the elastic composite of the present invention having stretchability in the longitudinal direction when forming the crotch gather portion in the production of a paper diaper.
【００４１】即ちテープ状にスリットした弾性複合体を
伸長下で、弾性複合体の不織布部分と紙おむつの股部に
接する位置のサイドフラップの表面材とを、たとえば公
開平３−２１８７５２のような形でホットメルトを用い
て接着させると、伸縮性に極めてすぐれたフローティン
グ股ギャザーが形成される。That is, while stretching the elastic composite slit in the form of a tape, the non-woven fabric portion of the elastic composite and the surface material of the side flap at the position in contact with the crotch portion of the disposable diaper are shaped as shown in, for example, Japanese Laid-Open Publication No. 3-218752. When bonded with hot melt, a floating crotch gather with excellent elasticity is formed.
【００４２】図２７は紙おむつの製造時の腰部ギャザー
部の形成に際して、横方向に伸縮性を有する本発明にな
る弾性複合体を応用する工程図の一例を示したものであ
る。即ち横方向に短冊状に切断した弾性複合体をベルト
により両端部を把持しながら、横方向に拡張しつつ伸長
し、把持した状態を保ちつつ、おむつ腰部に相当する部
位にホットメルトを用いて接合する。その後に腰部相当
部を切離し、緊張をとり除くと伸縮性に極めてすぐれた
フローティング腰部ギャザーが形成される。FIG. 27 shows an example of a process diagram for applying the elastic composite according to the present invention having lateral stretchability in the formation of the waist gather portion during the production of a paper diaper. That is, while holding the both ends of the elastic composite cut in the shape of a strip in the lateral direction with the belt, it expands and expands in the lateral direction, while maintaining the grasped state, using hot melt in the part corresponding to the waist of the diaper. To join. After that, the waist is cut off and the tension is removed to form a floating waist gather with excellent elasticity.
【００４３】なお、工業的な取扱いの効率性を考えた場
合、弾性複合体と製造工程と当該弾性複合体を製品への
結合工程とは判然と区別されるべきものでなく、弾性複
合体の製造工程の一部を製品本体への結合工程を持ちこ
むことも重要である。実施例２にはその例を示してい
る。Considering the efficiency of industrial handling, the elastic composite, the manufacturing process, and the process of connecting the elastic composite to a product should not be clearly distinguished. It is also important to incorporate a part of the manufacturing process into the product body. Example 2 shows the example.
【００４４】以下実施例によって説明する。An example will be described below.
【００４５】[0045]
実施例１ ｛弾性複合体｝弾性基材としてポリエーテルポリウレタ
ン樹脂フィルム２０ｍμを芯にしてＳＥＢＳ樹脂（三菱
油化製ラバロン）フィルム約１５μを両側に３層押出し
フィルムの約５０μの厚さを持つフィルム１４ロールを
用意する。本フィルムは破断伸度が縦方向４２０％であ
った。同時にこのフィルムは良好な超音波シール性を持
つ。不織布部材として乾式スポットボンドＰ，Ｐ不織布
（米社ベルデックス社製）２０Ｒ／ｍ2を２ロール用意
する。この不織布の縦方向破断伸度は３８％であった。
図１７のようなプロセスによりロール１４（約２０ｍ／
ｍｉｎ）、ロール１５（約６０ｍ／ｍｉｎ）の間で上記
弾性部材を約３倍に伸長し、ロール１６、１７のところ
に弾性部材をサンドイッチするように上、下２層の不織
布を供給する。この３層シートを回転式超音波融着装置
（ブランソン社製）を備え、アンビルに２５ｍ／ｍ間隔
にグリットをもつロールを用意し、約６２ｍ／ｍｉｎの
速度で通過させ、伸長状態で巻き取った。この３層部分
結合シートを切りとりＴｅｎｔｉｏｎ Ｆｒｅｅの状態
で緩和させたところ、縦方向の限界伸長率は１８５％を
有する両側にひだを有する弾性複合体が得られた。な
お、結合部の面積比｛（Ａ＋Ｂ）／Ａ｝×１００（％）
は約２０％、Ｑ／Ｐは約２．７倍であった。Example 1 {Elastic composite} A polyether polyurethane resin film 20 mμ as an elastic base material and a SEBS resin (Ravalon made by Mitsubishi Petrochemical) film having a thickness of about 50 μ of a three-layer extruded film on both sides of about 15 μ Prepare 14 rolls. The breaking elongation of this film was 420% in the machine direction. At the same time, the film has good ultrasonic sealing properties. As a non-woven fabric member, two rolls of dry spot bond P, P non-woven fabric (manufactured by Verdex Co., USA) 20 R / m 2 are prepared. The longitudinal elongation at break of this nonwoven fabric was 38%.
Roll 14 (about 20 m /
min) and the roll 15 (about 60 m / min), the elastic member is stretched about 3 times, and the upper and lower two layers of non-woven fabric are supplied so that the elastic member is sandwiched between the rolls 16 and 17. This three-layer sheet is equipped with a rotary ultrasonic fusing device (manufactured by Branson), a roll having grit at 25 m / m intervals is prepared on the anvil, passed at a speed of about 62 m / min, and wound in an elongated state. It was When this three-layer partially bonded sheet was cut and relaxed in the state of Tension Free, an elastic composite having pleats on both sides having a critical elongation in the longitudinal direction of 185% was obtained. The area ratio of the joint portion {(A + B) / A} × 100 (%)
Was about 20% and Q / P was about 2.7 times.
【００４６】｛弾性複合体と製品本体との結合｝製品と
して市販の紙おむつ（ＰＧ社製パンパースＭサイズ）の
外側の線状ギャザーを除去し、ギャザー形成部になるサ
イドクラップ部位の上層トップシートと上記弾性複合体
の不織布のひだ部分とをひだを伸長する状態で永久粘着
型ホットメルト接着剤により結合させた。その股部に形
成されたギャザーは約１８０％の伸長率を持ち、殆ど弾
性複合体の性能が損なわれることがなかった。約３０ピ
ースをつくり赤ちゃん５名でテストし、母親にインタビ
ューしたところもれも少なく極めて表面がソフトである
との結果を得た。{Coupling of elastic composite and product body} A linear diaper on the outside of a commercially available paper diaper (Pampers M size manufactured by PG Co.) is removed to form an upper layer topsheet of a side clap portion which becomes a gather forming portion. The folds of the nonwoven fabric of the elastic composite were bonded with a permanent tacky hot melt adhesive in a state where the folds were extended. The gather formed on the crotch portion had an elongation rate of about 180%, and the performance of the elastic composite was hardly impaired. We made about 30 pieces and tested them with 5 babies, and when we interviewed the mother, we found that the surface was very soft and the surface was very soft.
【００４７】実施例２ ｛弾性複合体｝弾性部材としてＥ．Ｕ．ＡとＢｕｔａｄ
ｉｅｎｅを主成分とするポリオレフィンエラストマー
（東燃化学製ラプレーズ）を用いてインフレーション法
により３０μの厚さをもつ筒状のフィルムを成形する。
この弾性部材は破断伸度５２０％であり、フィルムを重
ね合わせて圧搾すると自己接着を容易に起こすような性
質を持っている。Example 2 {Elastomeric composite} E. U. A and Butad
A tubular film having a thickness of 30 μ is formed by an inflation method using a polyolefin elastomer containing iene as a main component (Laprise manufactured by Tonen Kagaku).
This elastic member has a breaking elongation of 520% and has a property of easily causing self-adhesion when the films are stacked and pressed.
【００４８】インフレーションした筒状フィルムをその
まま巻きとりロール状で保存する。一方伸長性不織布は
次のようにして製造される。The inflated tubular film is wound as it is and stored in a roll form. On the other hand, the extensible nonwoven fabric is manufactured as follows.
【００４９】即ちＰ，Ｐ（ポリプロピレン）のＳｉｄｅ
ｂｙ ｓｉｄｅ型Ｃｏｎｊｕｇａｔｅ繊維（チッソ社
製ＥＳ複合繊維）２ｄ×５１ｍ／ｍからランダム状繊維
ウエブ（ヘルゲス社製ランダムカード）を開孔ベルトで
高圧水流で処理し、繊維相互と交絡された不織布を製造
する。これを加圧脱水後１３０℃の熱気乾燥機中を１．
６倍にオードフィードした状態で通過させる乾燥収縮を
起こし極めて伸長性に富んだ不織布が得られた。この不
織布の破断伸度は１９０％であった。この不織布を２ロ
ール用意する。That is, Side of P, P (polypropylene)
A random fiber web (random card made by Helges Co.) from a by side type Conjugate fiber (ES composite fiber made by Chisso Co.) 2d × 51 m / m is treated with a high-pressure water stream by an opening belt to produce a non-woven fabric entangled with each other. To do. After pressurizing and dehydrating this, the inside of the hot air dryer at 130 ° C. was
A non-woven fabric having an extremely high stretchability was obtained by causing drying shrinkage to pass through in a state where it was fed 6 times. The breaking elongation of this nonwoven fabric was 190%. Two rolls of this non-woven fabric are prepared.
【００５０】図１９に示したフローシートにより上記弾
性部材を芯にして上、下に２層の伸長性不織布をサンド
イッチした状態で、図２０、２１のようなプロセスと表
面を持った１００℃に加熱されたロール間を３０ｍ／ｍ
ｉｎ．の速度で通過させ、横しま状の熱接着パターンを
有する３層の複合シートが得られた。熱接着部分（Ａ）
は３ｍ／ｍ、未接着部分（Ｂ）は８ｍ／ｍであった。こ
の複合シートを約２．５倍に伸長したところ未接着部分
が不織布と弾性部材ともに伸長された。この状態の複合
シートをテンションを除き緩和させると約１５０％程度
の伸長性を有する弾性複合体が得られる。Ｑ／Ｐは約
２．５倍であった。この弾性複合体は弾性部材が２層に
なり、相互が自着状に接合されており、その両側に不織
布のひだが形成された構造を持っていた。With the flow sheet shown in FIG. 19, with the elastic member as a core, and sandwiching two layers of stretchable nonwoven fabric underneath, the process is carried out at 100 ° C. with the process and surface as shown in FIGS. 30m / m between heated rolls
in. And a three-layer composite sheet having a striped heat-bonding pattern was obtained. Heat bonded part (A)
Was 3 m / m, and the unbonded portion (B) was 8 m / m. When this composite sheet was stretched by a factor of about 2.5, both the non-bonded portion and the elastic member were stretched. When the composite sheet in this state is relaxed by removing the tension, an elastic composite having an extensibility of about 150% is obtained. Q / P was about 2.5 times. This elastic composite had two layers of elastic members, which were bonded to each other in a self-adhesive manner, and had a structure in which folds of non-woven fabric were formed on both sides thereof.
【００５１】｛弾性複合体の製品部位への結合｝上記の
ような工程で得られる、伸長前の不織布と弾性部材との
複合シートをスリットして、テープ状に加工したロール
状に巻取ったシートを得た。（伸長後巻取ると、伸長テ
ンションにより弾性部材が応力緩和を生起し経時的に伸
縮性を喪失する。一方伸長後の緩和状態の複合弾性体を
無緊張で巻取ると極めてバルキーなものになり経済性に
そぐわない。）上述したような１５ｍ／ｍのテープ状シ
ートを図２７に示すような工程で、上記複合シートを
２．４倍に伸長しながら、所定の長さに切断して、オム
ツの股ギャザー相当部位に不織布面とおむつの表面材料
とをホットメルトで接着したのち、無緊張状態にしたと
ころ１４０％の伸長性を有する伸縮の極めてすぐれた弾
性体が得られた。[Binding of Elastic Composite to Product Site] The composite sheet of the non-stretched non-woven fabric and the elastic member obtained in the above steps was slit and wound into a tape-shaped roll. Got the sheet. (When wound after stretching, the elastic member causes stress relaxation due to the stretching tension and loses elasticity over time. On the other hand, when the relaxed composite elastic body is wound without tension, it becomes extremely bulky. It is not economically suitable.) The above composite sheet is cut into a predetermined length while being stretched 2.4 times in a step as shown in FIG. After bonding the non-woven fabric surface and the surface material of the diaper to the part corresponding to the crotch gather by hot melt, the elastic body having a stretchability of 140% and having an excellent expansion and contraction was obtained.
【００５２】実施例３ ｛弾性複合体｝弾性部材としてＶ．Ｌ．Ｌ．Ｄ．Ｐ．Ｅ
を主成分とするポリオレフィンエラストマー弾性シート
（三井東圧化学製）を溶融ダイスからの押出し成形によ
り３０ｍのフィルムを成形する。このフィルムは縦方向
に延伸されていて、縦方向（ＭＤ）の破断伸度は１８０
％前後であったが、横方向（ＣＤ）の破断伸度は４２０
％で極めて横方向に伸縮しやすい構造を持っていた。Example 3 {Elastic composite} As an elastic member, V. L. L. D. P. E
A polyolefin elastomer elastic sheet (made by Mitsui Toatsu Kagaku Co., Ltd.) containing as a main component is extruded from a melt die to form a 30 m film. This film is stretched in the machine direction and has a breaking elongation in the machine direction (MD) of 180.
%, But the breaking elongation in the transverse direction (CD) was 420.
It had a structure that it was extremely easy to expand and contract in the lateral direction in%.
【００５３】一方不織布としてポリプロピレン繊維（大
和紡製）２．２ｄ×４５ｍ／ｍから約３５ｇ／ｍ2のパ
ラレル状（ホリングスワース社製タンデムマスターカー
ド使用）のウエブを多数の組孔と脱水ゾーンを備えた円
柱状シリンダー上で、高圧の水流（５０〜６０ｋｇ／ｃ
ｍ2）で繊維相互を交絡させ、後乾燥すると２５ｇ／ｍ2
のソフトな感触を有する不織布が得られる。この不織布
は縦方向の破断伸度は約５８％であったが、横方向の破
断伸度は２２０％であり極めて横方向に伸長しやすい構
造を持っていた。図２４で示したようなプロセスにより
上記弾性部材を溶融押出し後のフィルムを約５０ｍ／ｍ
ｉｎで冷却後まず上記不織布をロールに導き不織布とフ
ィルムを圧着するとフィルムと不織布が仮圧着状態に至
る。この複合シートを片側に図２５に示すようなグリッ
ト状に加熱ロールを通過させた。表面が約１１０℃に加
熱された溝付ロールは不織布側から接触させた。結合部
（Ａ）は約２ｍ／ｍ非結合部の巾（Ｂ）は約６ｍ／ｍで
あった。これによって不織布と弾性フィルム部材が部分
的線状に熱結合された複合シートが得られる。これを横
方向に伸長すると約２．８倍（１８０％）まで伸長さ
れ、これを無緊張状態にして緩和すると片側に不織布の
ひだを有する伸縮性に極めてすぐれた弾性複合体が得ら
れる。Ｑ／Ｐは約２．８倍であった。On the other hand, as the non-woven fabric, a polypropylene web (manufactured by Daiwabo Co., Ltd.) 2.2d × 45 m / m to about 35 g / m 2 in parallel (using a tandem master card manufactured by Holling Swarth) is provided with a large number of assembling holes and a dehydration zone. On a cylindrical cylinder equipped with a high pressure water flow (50-60 kg / c
25 g / m 2 when the fibers are entangled with each other by m 2 ) and then dried.
A non-woven fabric having a soft touch is obtained. The nonwoven fabric had a breaking elongation in the machine direction of about 58%, but had a breaking elongation in the transverse direction of 220% and had a structure that was extremely easy to expand in the transverse direction. About 50 m / m of the film after melt extruding the elastic member by the process as shown in FIG.
After cooling with in, the non-woven fabric is first introduced to a roll and the non-woven fabric and the film are pressure-bonded to each other, so that the film and the non-woven fabric reach a temporary pressure-bonded state. This composite sheet was passed through a heating roll on one side in the shape of a grit as shown in FIG. The grooved roll whose surface was heated to about 110 ° C. was contacted from the nonwoven fabric side. The bonded part (A) had a width of about 2 m / m and the non-bonded part had a width (B) of about 6 m / m. As a result, a composite sheet in which the nonwoven fabric and the elastic film member are partially linearly thermally bonded is obtained. When this is stretched in the transverse direction, it is stretched up to about 2.8 times (180%), and when it is relaxed in a tension-free state, an elastic composite having a fold of a nonwoven fabric on one side and having excellent elasticity is obtained. Q / P was about 2.8 times.
【００５４】上記連続して得られる複合シートは伸長す
ることなく、そのまま巻とり５００ｍ巻ロールを製造し
た。このロールからは不織布層があるため自着すること
なく安定に再巻出しが可能であった。このシートを切取
り、露出している弾性部材面を重ね合わせるように、２
枚を重ね合わせ常温で圧着すると、フィルム同志が自着
状態を起こし接合した。この重ね合わせた状態で横方向
に伸長すると約２．７倍伸長され（１７０％）た。これ
を無緊張状態にして緩和すると両側に不織布ひだを有す
る伸縮性に極めてすぐれた弾性複合体が得られた。The continuously obtained composite sheet was wound up without being stretched to manufacture a 500 m roll. Since there was a non-woven fabric layer from this roll, it could be stably unwound without self-adhesion. Cut off this sheet and stack the exposed elastic member surfaces together.
When the sheets were stacked and pressure-bonded at room temperature, the films became self-adhesive and joined. When it was stretched in the lateral direction in this superposed state, it was stretched by about 2.7 times (170%). When this was relaxed in a tension-free state, an elastic composite having nonwoven fabric folds on both sides and having excellent stretchability was obtained.
【００５５】｛弾性複合体の製品部位への結合｝上記複
合シートをスリットして、約巾１８０ｍ／ｍのシートロ
ール２本を用意する。１８０ｍ／ｍのシート２枚を弾性
部材を接合するように２枚重ね合わせ、加圧すると２枚
のシートは自着現象により仮接着状態となる（図２
８）。[Binding of Elastic Composite to Product Site] The above composite sheet is slit to prepare two sheet rolls having a width of about 180 m / m. Two sheets of 180 m / m are superposed on each other so as to join the elastic members, and when pressure is applied, the two sheets are temporarily bonded due to the self-adhesion phenomenon (Fig. 2).
8).
【００５６】次に両側端部から３０ｍ／ｍの部分を１２
０℃の表面平滑な表面ロールで両サイドを加熱加圧する
と図２９のように両サイド３０ｍ／ｍの部分は完全に熱
圧着され、中央部１２０ｍ／ｍは仮接着状態の複合シー
トを図２７のようなプロセスによって巾５０ｍ／ｍの短
冊状に切断しつつ、両側端の圧着部をベルトに挿んで全
体が約２倍になるように横に拡張、伸長した。その変化
を図３０に示した。伸長により両端の３０ｍ／ｍ（６０
ｍ／ｍ）は伸長せず中央の１２０ｍ／ｍの部分が約３０
０ｍ／ｍ即ち２．５倍に伸長された。その伸長状態のま
ま連続的に走行する使い捨てのおむつの腰部相当部位の
表面材に、弾性複合体の不織布を結合させ、更に側端３
０ｍ／ｍの完全圧着に結束具である粘着テープをとりつ
け、単一おつむに切断、緊張をとりのぞき緩和すると極
めて良好な伸縮性を有する弾性体とテープを備えた腰部
構造を持った子供用おむつが製造された。Next, 12 parts of 30 m / m from both ends are
When both sides are heated and pressed by a surface roll having a smooth surface at 0 ° C., 30 m / m on both sides are completely thermocompression bonded as shown in FIG. 29, and 120 m / m in the central portion is a temporarily bonded composite sheet. While being cut into strips having a width of 50 m / m by the above process, the pressure-bonded portions at both ends were inserted into a belt and laterally expanded and stretched so that the entire length was doubled. The change is shown in FIG. 30m / m (60
(m / m) does not extend and the central 120 m / m part is about 30
It was extended to 0 m / m or 2.5 times. The elastic composite non-woven fabric is bonded to the surface material of the waist equivalent portion of the disposable diaper that continuously runs in the stretched state, and the side end 3
A diaper for children with a waist structure that has an elastic body and tape that has extremely good elasticity when the adhesive tape, which is a binding tool, is attached to the full pressure bond of 0 m / m, and it is cut into a single diaper and removes tension to relieve tension. Was manufactured.
【００５７】[0057]
【発明の効果】本発明は、オムツの如きパンツ型生理用
品において、その伸縮所望部位に新規な弾性複合体を配
して、スムースな伸縮性を得ると共に安価に提供するこ
とができるものである。INDUSTRIAL APPLICABILITY According to the present invention, in a pants-type sanitary article such as a diaper, a novel elastic composite body is arranged at a desired stretchable portion to obtain smooth stretchability and can be provided at a low cost. ..
【図１】本発明のフローティングギャザーの構成の説明
図である。FIG. 1 is an explanatory diagram of a configuration of a floating gather of the present invention.
【図２】本発明のフローティングギャザーの他の構成の
説明図である。FIG. 2 is an explanatory diagram of another configuration of the floating gather of the present invention.
【図３】フローティングギャザーの製造の説明図であ
る。FIG. 3 is an explanatory view of manufacturing a floating gather.
【図４】弾性複合体の構成の説明図である。FIG. 4 is an explanatory diagram of a configuration of an elastic composite body.
【図５】弾性複合体の結合部とひだ部との関係の説明図
である。FIG. 5 is an explanatory diagram of a relationship between a joint portion and a fold portion of the elastic composite body.
【図６】弾性複合体の緩和と伸長の関係の説明図であ
る。FIG. 6 is an explanatory diagram of a relationship between relaxation and elongation of the elastic composite.
【図７】弾性複合体の緩和と伸長の説明図である。FIG. 7 is an explanatory diagram of relaxation and extension of the elastic composite.
【図８】弾性複合体の構成の変化例の説明図である。FIG. 8 is an explanatory diagram of a modified example of the configuration of the elastic composite body.
【図９】弾性複合体の構成の変化例の説明図である。FIG. 9 is an explanatory diagram of a modified example of the configuration of the elastic composite body.
【図１０】弾性複合体の構成の説明図である。FIG. 10 is an explanatory diagram of a configuration of an elastic composite body.
【図１１】弾性複合体の他の構成の説明図である。FIG. 11 is an explanatory diagram of another configuration of the elastic composite body.
【図１２】中央部が高伸縮、両端部が低伸縮部の弾性複
合体の説明図である。FIG. 12 is an explanatory diagram of an elastic composite body in which the central portion has high elasticity and the both ends have low elasticity.
【図１３】弾性複合体と製品本体との結合状態の説明図
である。FIG. 13 is an explanatory diagram of a combined state of the elastic composite body and the product body.
【図１４】弾性複合体と製品主体との結合状態の説明図
である。FIG. 14 is an explanatory view of a combined state of the elastic composite and the product main body.
【図１５】弾性複合体の縦方向と横方向伸縮性の説明図
である。FIG. 15 is an explanatory diagram of longitudinal and lateral stretchability of the elastic composite.
【図１６】弾性複合体の製造工程の説明図である。FIG. 16 is an explanatory diagram of the manufacturing process of the elastic composite body.
【図１７】弾性複合体の製造装置の説明図である。FIG. 17 is an explanatory diagram of an elastic composite manufacturing apparatus.
【図１８】製造装置におけるロールの説明図である。FIG. 18 is an explanatory diagram of rolls in the manufacturing apparatus.
【図１９】弾性複合体の他の製造法の説明図である。FIG. 19 is an explanatory view of another method for manufacturing the elastic composite body.
【図２０】弾性複合体の他の製造装置の説明図である。FIG. 20 is an explanatory diagram of another manufacturing apparatus of the elastic composite body.
【図２１】製造装置におけるロールの説明図である。FIG. 21 is an explanatory diagram of a roll in the manufacturing apparatus.
【図２２】弾性複合体の他の製造法の説明図である。FIG. 22 is an explanatory diagram of another method for manufacturing the elastic composite body.
【図２３】弾性複合体の他の製造法の説明図である。FIG. 23 is an explanatory diagram of another method for manufacturing the elastic composite body.
【図２４】弾性複合体の他の製造装置の説明図である。FIG. 24 is an explanatory view of another manufacturing apparatus of the elastic composite body.
【図２５】弾性複合体の他の製造装置のロールの説明図
である。FIG. 25 is an explanatory diagram of a roll of another apparatus for manufacturing the elastic composite.
【図２６】オムツ製造時の股部ギャザー部形成の応用例
を示す説明図である。FIG. 26 is an explanatory view showing an application example of forming a crotch part gather portion at the time of manufacturing a diaper.
【図２７】オムツギャザー部の応用に際して伸長する方
式の説明図である。FIG. 27 is an explanatory diagram of a method of expanding when applying a diaper gather part.
【図２８】弾性複合体の仮接合の説明図である。FIG. 28 is an explanatory diagram of temporary joining of elastic composites.
【図２９】両サイドを低伸縮部とした弾性複合体の説明
図である。FIG. 29 is an explanatory diagram of an elastic composite body having low expansion and contraction portions on both sides.
【図３０】中央部と両端部と伸縮度の違う例の変化の状
態を示す説明図である。FIG. 30 is an explanatory diagram showing a change state in an example in which the degree of expansion and contraction differs between the central portion and both end portions.
【図３１】従来のオムツの一例の説明図である。FIG. 31 is an explanatory diagram of an example of a conventional diaper.
【図３２】従来のオムツの他の例の説明図である。FIG. 32 is an explanatory diagram of another example of a conventional diaper.
【図３３】図３１の従来のオムツの構成の概念図であ
る。FIG. 33 is a conceptual diagram of the configuration of the conventional diaper of FIG. 31.
【図３４】図３２の従来のオムツの構成の概念図であ
る。FIG. 34 is a conceptual diagram of the configuration of the conventional diaper of FIG. 32.
【図３５】従来のオムツの各部の構成の説明図である。FIG. 35 is an explanatory diagram of a configuration of each part of a conventional diaper.
【図３６】図３１の従来のオムツの伸張前後の態様の説
明図である。FIG. 36 is an explanatory diagram of a state before and after the extension of the conventional diaper of FIG. 31.
【図３７】図３２の従来のオムツの伸張前後の態様の説
明図である。FIG. 37 is an explanatory diagram of a state before and after the extension of the conventional diaper of FIG. 32.
【図３８】フローティング構造の概念の説明図である。FIG. 38 is an explanatory diagram of a concept of a floating structure.
１ 弾性体 ２ 弾性体 ３ 腰部端末部 ４ 腰部端末部 ５ 結束部 ６ 弾性体 ７ 弾性体 １１ 不織布 １２ 不織布 １３ 弾性体 DESCRIPTION OF SYMBOLS 1 elastic body 2 elastic body 3 waist terminal part 4 waist terminal part 5 binding part 6 elastic body 7 elastic body 11 non-woven fabric 12 non-woven fabric 13 elastic body
【手続補正書】[Procedure amendment]
【提出日】平成４年２月２６日[Submission date] February 26, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ａ６１Ｆ 13/72 Ｂ３２Ｂ 5/04 7016−4Ｆ 2119−3Ｂ Ａ４１Ｂ 13/02 Ｓ 2119−3Ｂ Ｔ 7729−4Ｃ Ａ６１Ｆ 13/16 ３００ Ｚ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical display location A61F 13/72 B32B 5/04 7016-4F 2119-3B A41B 13/02 S 2119-3B T 7729- 4C A61F 13/16 300 Z
Claims (9)
面に不織布基材を、結合部と結合部との間にひだを形成
する非結合部を有するように複合してなる弾性複合体
を、パンツの伸縮所望部位と、不織布基材側において接
合させてなることを特徴とする新規な弾性複合体を伸縮
部に備えたパンツ状生理用品。1. An elastic composite body comprising a sheet-like elastic body in a relaxed state and a non-woven fabric base material on both sides or one side thereof having a non-bonding portion forming a fold between the bonding portions. , A pants-like sanitary article comprising a novel elastic composite, which is formed by joining the desired stretchable part of the pants on the side of the non-woven fabric substrate in the stretchable part.
の腰部被覆部端部に接合されてなる新規な弾性複合体を
伸縮部に備えたパンツ状生理用品。2. The pants-like sanitary article according to claim 1, wherein the elastic part is provided with a novel elastic composite obtained by joining the elastic composite to the end of the waist portion of the pants.
分れた腰部被覆部端部の全体に渡って配置され、かつ、
前後の腰部被覆部相互はその側端部に備えられた結束体
によって結束されるように構成されている新規な弾性複
合体を伸縮部に備えたパンツ状生理用品。3. The elastic composite body according to claim 2, wherein the elastic composite body is arranged over the entire waist end portion divided into front and rear, and
A pant-like sanitary article having a stretchable part including a novel elastic composite configured such that the front and rear waist covering parts are bound together by a binding member provided on the side ends thereof.
の腰部被覆部端部の全周に渡って切断部がないように接
合されている新規な弾性複合体を伸縮部に備えたパンツ
状生理用品。4. The pant-like shape according to claim 2, wherein the elastic composite body is joined to the elastic covering portion along the entire circumference of the waist covering end portion of the pants so that there is no cut portion. Sanitary items.
面に不織布基材結合する場合に、弾性体とひだになる不
織布の結合点が両面ともほぼ同一の位置で結合されてな
る新規な弾性複合体を伸縮部に備えたパンツ状生理用
品。5. The novel elasticity according to claim 1, wherein when the nonwoven fabric base material is bonded to both surfaces of the sheet-like elastic material, the elastic material and the pleated nonwoven material are bonded at substantially the same position on both surfaces. A pants-like sanitary product with a composite in the stretchable part.
合体のひだの高さを結束部を設置する両側端部において
低くし、背部および／あるいは腹部の中央部分において
高く形成してなる新規な弾性複合体を伸縮部に備えたパ
ンツ状生理用品。6. A novel structure according to claim 3, wherein the height of the pleats of the elastic composite having pleats is made low at both end portions where the binding portion is installed, and is made high at the central portion of the back and / or abdomen. Pants-like sanitary product with elastic composite in the stretchable part.
高さが、背部および／あるいは腹部の中央部分において
高くし、両脇部分において低く形成してなる新規な弾性
複合体を伸縮部に備えたパンツ状生理用品。7. The elastic composite according to claim 4, wherein the height of the folds of the elastic composite is high in the central portion of the back and / or abdomen and low in both sides, and the elastic portion is a stretchable portion. Pants-like sanitary goods provided.
有するポリオレフィンエラストマーである新規な弾性複
合体を伸縮部に備えたパンツ状生理用品。8. A pants-like sanitary article according to claim 1, wherein the elastic part is provided with a novel elastic composite body in which the elastic body is a polyolefin elastomer having self-adhesiveness.
高い部分における緩和状態の弾性体の部分長Ｐとひだの
全長Ｑとの関係がＱ／Ｐ≧１．５である新規な弾性複合
体を伸縮部に備えたパンツ状生理用品。9. The novel elasticity according to claim 6 or 7, wherein the relation between the partial length P of the elastic body in a relaxed state and the total length Q of the folds in the high fold height is Q / P ≧ 1.5. A pants-like sanitary product with a composite in the stretchable part.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03546792A JP3573761B2 (en) | 1992-02-24 | 1992-02-24 | Pant-shaped sanitary products with a new elastic composite in the elastic part |
| ES93102261T ES2101885T3 (en) | 1992-02-13 | 1993-02-12 | ELASTIC COMPOSITE MATERIAL OF SHEETS FOR HYGIENIC ITEMS, PROCEDURE FOR ITS MANUFACTURE AND USES. |
| DE69310406T DE69310406T2 (en) | 1992-02-13 | 1993-02-12 | Compound elastic sheet for hygiene articles, their manufacturing process and their use |
| US08/017,505 US5576090A (en) | 1992-02-13 | 1993-02-12 | Sheet elastic complex used in sanitary products its manufacturing process, and its usages |
| EP93102261A EP0556749B1 (en) | 1992-02-13 | 1993-02-12 | A sheet elastic complex used in sanitary products, its manufacturing process, and its usages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03546792A JP3573761B2 (en) | 1992-02-24 | 1992-02-24 | Pant-shaped sanitary products with a new elastic composite in the elastic part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05228177A true JPH05228177A (en) | 1993-09-07 |
| JP3573761B2 JP3573761B2 (en) | 2004-10-06 |
Family
ID=12442589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03546792A Expired - Fee Related JP3573761B2 (en) | 1992-02-13 | 1992-02-24 | Pant-shaped sanitary products with a new elastic composite in the elastic part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3573761B2 (en) |
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