JPH06328601A - Air permeable sheet like structure and production thereof - Google Patents
Air permeable sheet like structure and production thereofInfo
- Publication number
- JPH06328601A JPH06328601A JP5139865A JP13986593A JPH06328601A JP H06328601 A JPH06328601 A JP H06328601A JP 5139865 A JP5139865 A JP 5139865A JP 13986593 A JP13986593 A JP 13986593A JP H06328601 A JPH06328601 A JP H06328601A
- Authority
- JP
- Japan
- Prior art keywords
- elastic sheet
- sheet
- nonwoven fabric
- bonding
- 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、衛生用品に有利に使用
される、弾性シートと不織布とを複合させた複合体から
なる通気性シート状構造体、およびその製造方法に関
し、さらに詳しくは、優れた液体不透過性と通気性とを
兼ね備えており、したがって身体に接触した状態で使用
される不透過性素材として、とくに生理用品やオムツ等
の吸収体製品に有利に使用できる通気性シート状構造
体、およびこのシート状構造体を製造する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breathable sheet-like structure comprising a composite of an elastic sheet and a non-woven fabric, which is advantageously used for sanitary goods, and a method for producing the same. A breathable sheet that has both excellent liquid impermeability and breathability, and therefore can be used advantageously as an impermeable material used in contact with the body, especially for absorbent products such as sanitary products and diapers. The present invention relates to a structure and a method for manufacturing the sheet-shaped structure.
【０００２】[0002]
【従来の技術】使い捨てオムツのような吸収体製品、伸
縮性包帯、外科用ガウン等を含む多くの衛生用品は、適
度な伸縮性を有していることはもちろん、液体の透過を
許容しない液体不透過性の素材で構成することが望まれ
る。またこれらの物品は、人体に直接に接触し、もしく
は人体の少なくとも一部を覆う形態で使用されるため
に、布のような良好な感触を有していることが必要とさ
れる。このような要求にもとづいて、天然ゴム、合成ゴ
ム、ウレタン樹脂等のシート状素材に不織布を貼合わせ
た複合シートが開発されている。BACKGROUND OF THE INVENTION Many hygiene products, including absorbent products such as disposable diapers, elastic bandages, surgical gowns, etc., are liquids that do not allow liquids to permeate, let alone have moderate elasticity. It is desired to be composed of an impermeable material. Further, since these articles are used in a form of directly contacting or covering at least a part of the human body, it is necessary that they have a good feel like a cloth. Based on these requirements, composite sheets have been developed in which a non-woven fabric is attached to a sheet material such as natural rubber, synthetic rubber, or urethane resin.
【０００３】不織物は一般に、その製造機械における走
行方向すなわちマシン方向にはほとんど延びないが、こ
れと直交する方向すなわちクロスマシン方向には比較的
大きい伸縮性を有しているので、このような不織布と不
透過性シート状弾性体とを貼合わせた複合シートは、少
なくとも一方向には伸縮性であり、また不織布の側は布
様の良好な感触を有しているため、上記のような物品の
ための素材として広く使用されている。Nonwoven fabrics generally do not extend very much in the running or machine direction of their manufacturing machines, but have such a high degree of stretchability in the direction orthogonal thereto, ie in the cross machine direction, that such A composite sheet obtained by laminating a non-woven fabric and an impermeable sheet-like elastic body is stretchable in at least one direction, and since the non-woven fabric side has a good cloth-like touch, Widely used as a material for goods.
【０００４】[0004]
【発明が解決しようとしている課題】しかしながら前述
のような複合シートは、ほとんど、もしくは全く通気性
を持たないという重大な欠陥を有している。たとえばこ
のような複合シートを、使い捨てオムツのような吸収体
製品において皮膚に接触する部分の材料として使用した
場合、良好な感触および防水性は満足されるが、通気性
の欠如による不都合、主として蒸れることによる不快感
を使用者に与えるのを免れない。However, the composite sheet as described above has a serious defect that it has little or no air permeability. For example, when such a composite sheet is used as a material of a part that comes into contact with the skin in an absorbent product such as a disposable diaper, good feel and waterproofness are satisfied, but disadvantageous due to lack of breathability, mainly stuffy. It is unavoidable to give the user discomfort.
【０００５】すなわち従来の技術では、液体不透過性に
優れているシート状材料は、ほとんど、もしくは全く通
気性を持たないというのが常識となっており、十分な液
体不透過性を維持しながら、適度な通気性を有する弾性
シートの開発が強く望まれている。That is, in the prior art, it is common knowledge that a sheet material having excellent liquid impermeability has little or no air permeability, and while maintaining sufficient liquid impermeability. It is strongly desired to develop an elastic sheet having appropriate air permeability.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、熱圧着
可能な材料からなる弾性シートと、この弾性シートの少
なくとも一方の面に配置された不織布とを備え、前記弾
性シートおよび前記不織布は、所望のパターンの結合部
において熱圧着により結合されており、前記結合部にお
いて前記弾性シートに形成された通気孔を有しているこ
とを特徴とする通気性シート状構造体が提供される。According to the present invention, there is provided an elastic sheet made of a thermocompression-bondable material, and a nonwoven fabric arranged on at least one surface of the elastic sheet. A breathable sheet-like structure is provided, which is joined by thermocompression bonding at a joining portion having a desired pattern and has a vent hole formed in the elastic sheet at the joining portion.
【０００７】このような本発明方法により製造されたシ
ート状構造体は、弾性シートと不織布との結合部におい
て、熱圧着およびこれにつづく延伸の過程で形成された
多数の微小通気孔とを有している。熱圧着条件、たとえ
ば熱圧着機材の温度、あるいはその圧着温度等を適切な
値に設定することにより、微小通気孔の大きさを、空気
の流通は許容するが、水、体液その他の液体の透過は許
容しない程度の大きさにすることが可能である。The sheet-like structure produced by the method of the present invention has a large number of minute vent holes formed in the process of thermocompression bonding and subsequent stretching at the joint between the elastic sheet and the nonwoven fabric. is doing. By setting the thermocompression bonding conditions, such as the temperature of the thermocompression bonding equipment or the temperature of the thermocompression bonding, to an appropriate value, the size of the micro-vents allows air to pass, but allows the passage of water, body fluids and other liquids. Can be unacceptable.
【０００８】したがって本発明のシート状構造体は、身
体に接触した状態で使用される不透過性素材として、生
理用品やオムツ等の衛生用品に使用した場合、十分な通
気性を維持しながら、良好な液体不透過性を発揮し、き
わめて良好な使用感を与える。Therefore, when the sheet-like structure of the present invention is used as an impermeable material used in contact with the body for sanitary items such as sanitary items and diapers, while maintaining sufficient air permeability, It exhibits good liquid impermeability and gives a very good feeling during use.
【０００９】また本発明は、熱圧着可能な材料からなる
弾性シートの少なくとも一方の面に不織布を重ね、前記
弾性シートおよび前記不織布を、互いに対向する２つの
熱圧着機材を圧着させることにより互いに結合する工程
を備え、前記熱圧着は、前記結合部において、前記弾性
シートに微小通気孔を形成するような条件で行なわれる
ことを特徴とする通気性シート状構造体の製造方法をも
提供する。Further, according to the present invention, a nonwoven fabric is laminated on at least one surface of an elastic sheet made of a thermocompression-bondable material, and the elastic sheet and the nonwoven fabric are bonded to each other by pressure-bonding two thermocompression-bonding devices facing each other. Also provided is a method for producing a breathable sheet-like structure, characterized in that the thermocompression bonding is performed under the conditions such that minute vent holes are formed in the elastic sheet at the joint portion.
【００１０】弾性シートと不織布とを所望の結合部で熱
圧着することによって多数の通気孔が形成されるメカニ
ズムは、ランダムに配向する多数の繊維の集合体である
不織布がその表面に多数の微細な凹凸を有しており、不
織布が弾性シートに加熱下で圧着されたときに、不織布
の凸部に対応する部分で弾性シートに熱と圧力が集中
し、この部分で弾性シートが熱収縮することである。し
たがって熱圧着の加熱および加圧条件を適当に選択すれ
ば、本来は非通気性である弾性シートに多数の通気孔を
形成することが可能である。The mechanism by which a large number of air holes are formed by thermocompression bonding an elastic sheet and a nonwoven fabric at a desired joint is that a nonwoven fabric, which is an aggregate of randomly oriented fibers, has many fine particles on its surface. When the non-woven fabric is pressure-bonded to the elastic sheet under heating, heat and pressure are concentrated on the elastic sheet at the part corresponding to the convex part of the non-woven fabric, and the elastic sheet heat-shrinks at this part. That is. Therefore, by appropriately selecting the heating and pressurizing conditions for thermocompression bonding, it is possible to form a large number of vent holes in the elastic sheet which is originally impermeable.
【００１１】熱圧着時の最適温度は、使用される弾性シ
ートの材質、厚さ等に応じて変動するが、一般的には１
００〜１４０℃である。また圧力は、たとえば１〜２０
ｋｇ／ｃｍ2の範囲から選択される。一般に熱圧着時の
温度および圧力が高くなるにしたがって、結合部の開孔
度すなわち通気度が大きくなる。このような熱圧着の最
適条件は、簡単な実験を行なうことにより、当業者であ
れば容易に見出すことができる。The optimum temperature for thermocompression bonding varies depending on the material and thickness of the elastic sheet used, but is generally 1
It is 00-140 degreeC. The pressure is, for example, 1 to 20.
It is selected from the range of kg / cm 2 . Generally, as the temperature and pressure during thermocompression bonding increase, the openness of the joint, that is, the air permeability, increases. The optimum conditions for such thermocompression bonding can be easily found by those skilled in the art by conducting a simple experiment.
【００１２】本発明方法において、弾性シートと不織布
との結合部においてさらに大きい通気性を望む場合に
は、熱圧着の完了後に、形成された結合部を１軸方向ま
たは２軸方向に延伸することができる。この延伸によ
り、熱圧着時に弾性シートに形成されたが、開孔するに
は至っていない肉薄部が破れて開孔し、熱圧着時にすで
に開孔していた通気孔と合わせて、より多数の通気孔が
形成される。In the method of the present invention, if greater air permeability is desired at the joint between the elastic sheet and the nonwoven fabric, the formed joint may be uniaxially or biaxially stretched after completion of thermocompression bonding. You can By this stretching, a thin portion that was formed on the elastic sheet during thermocompression bonding but has not yet been opened is torn and opened, and a larger number of holes are added together with the ventilation holes that were already opened during thermocompression bonding. Pores are formed.
【００１３】さらに、弾性シートとして、あらかじめ多
数の微小孔を形成したものを使用することができる。こ
の微小孔は、たとえば弾性シートに針を突き刺すことに
より形成した、実際には弾性シートの復元性により塞が
った通気性のないものであってもよい。この孔あき弾性
シートを使用した場合には、不織布との熱圧着時に、弾
性シートの熱収縮により孔が拡大され、大きい通気性を
有するものとなる。Further, as the elastic sheet, it is possible to use an elastic sheet in which a large number of minute holes are formed in advance. The minute holes may be, for example, formed by piercing the elastic sheet with a needle, and may actually be closed due to the resilience of the elastic sheet and have no air permeability. When this perforated elastic sheet is used, the pores are expanded due to the thermal contraction of the elastic sheet during thermocompression bonding with the non-woven fabric, so that the sheet has large air permeability.
【００１４】この孔あき弾性シートを使用した場合に得
られる利点は、比較的加熱温度および圧着圧力が低い条
件でも、所望の数の通気孔が確実に形成されるというこ
とである。加えて、熱圧着時に弾性シートが熱収縮する
際に、孔の周縁が溶融してリング状の肉厚部を形成し、
これにより結合部の強度が向上するという利点も得られ
る。An advantage obtained by using this perforated elastic sheet is that a desired number of vent holes can be reliably formed even under conditions of relatively low heating temperature and pressure bonding pressure. In addition, when the elastic sheet thermally contracts during thermocompression bonding, the periphery of the hole melts to form a ring-shaped thick portion,
This also has the advantage of increasing the strength of the joint.
【００１５】本発明方法により結合部に形成された通気
孔は、きわめて微細なものであり、空気の流通は許容す
るが、液体の透過は実質的に許容しない。したがって得
られたシート状構造体は、液体不透過性を保持しなが
ら、熱圧着された結合部で大きい通気性を示す。The ventilation holes formed in the joint portion by the method of the present invention are extremely fine and allow the passage of air but substantially not the passage of liquid. Therefore, the obtained sheet-like structure exhibits high air permeability at the thermocompression bonded joint while maintaining liquid impermeability.
【００１６】本発明において、弾性シートと不織布との
熱圧着は、結合すべき領域の全体にわたって均一に行な
われてもよいが、メッシュ状、梨地状、あるいは線状等
のような任意のパターンでエンボスすることにより行な
うことも可能である。このような部分的熱圧着は、相対
向する２つの熱圧着機材の少なくとも一方に所望のパタ
ーンで凹部もしくは凸部を設けておくことにより容易に
行なうことが可能であり、結合部全面を平坦に熱圧着す
る場合と比較して、均一な結合が得やすい場合もある。In the present invention, the thermocompression bonding of the elastic sheet and the non-woven fabric may be performed uniformly over the entire region to be bonded, but may be performed in any pattern such as mesh, satin or linear. It can also be done by embossing. Such partial thermocompression bonding can be easily performed by providing a concave portion or a convex portion in a desired pattern on at least one of two opposing thermocompression bonding equipments, and flattening the entire joint surface. In some cases, it is easier to obtain a uniform bond as compared with the case of thermocompression bonding.
【００１７】本発明に用いる弾性シートとしては、合成
ゴム、ポリウレタン、スチレン・ブタジエンブロックポ
リマー、ポリオレフィン系エラストマー等の、熱圧着が
可能な材料で構成されたフィルム状または不織布状弾性
シートの全てを使用できる。とくに好ましい材料は、Ｅ
ＶＡ、超低密度のＬＬＤＰＥ、エチレン・プロピレンエ
ラストマー、エチレン・メチルアクリレートエラストマ
ー等のポリオレフィンエラストマー；あるいポリオレフ
ィンエラストマーと合成ゴム、スチレンエチレンブタジ
エン・スチレンブロックポリマー（ＳＥＢＳ）とのブレ
ンド体；およびポリウレタン系エラストマーとポリオレ
フィン系エラストマーとの共押出しフィルム等の、１軸
または２軸延伸されたフィルム状または不織布状のもの
である。本発明に使用される不織布としては、シート状
構造体の用途に適合するものであれば、いかなる種類の
不織布でもよいが、パラレルカードウェブを高圧水流に
より結合してなる不織布、あるいはフィラメントやトウ
を分織してなるスパンボンド方式の不織布は、繊維が相
対的にマシン方向に配向しているために、マシン方向に
較べてクロスマシン方向における伸張度が著しく大き
く、とくに好ましい不織布である。中でも水流交絡法に
よって得られる不織布は、伸度が大きく、しかも強度お
よびねばりのあるタフネスの高い不織布で、本発明に使
用するのに適している。また不織布の原料繊維として
は、水濡れ性が少なく、肌に対する刺激性も少なく、し
かも安全性の高い疎水性繊維であるＰＥ，ＰＰ，ＰＥＴ
等の、１．５ｄ〜３ｄの合成繊維ステープルが望まし
い。As the elastic sheet used in the present invention, all film-like or non-woven sheet-like elastic sheets made of a material capable of thermocompression bonding such as synthetic rubber, polyurethane, styrene-butadiene block polymer, and polyolefin elastomer are used. it can. A particularly preferred material is E
VA, ultra low density LLDPE, polyolefin elastomer such as ethylene / propylene elastomer, ethylene / methyl acrylate elastomer; or blend of polyolefin elastomer and synthetic rubber, styrene ethylene butadiene / styrene block polymer (SEBS); and polyurethane elastomer A uniaxially or biaxially stretched film or non-woven fabric such as a coextruded film of a polyolefin elastomer. The non-woven fabric used in the present invention may be any kind of non-woven fabric as long as it is suitable for the application of the sheet-like structure, but a non-woven fabric obtained by binding parallel card webs by a high-pressure water stream, or a filament or tow The spunbonded non-woven fabric obtained by weaving is a particularly preferred non-woven fabric because the fibers are relatively oriented in the machine direction, and therefore the degree of extension in the cross machine direction is significantly larger than that in the machine direction. Among them, the non-woven fabric obtained by the hydroentangling method is a non-woven fabric having high elongation and high strength and tenacity, and is suitable for use in the present invention. Further, as the raw material fibers of the non-woven fabric, PE, PP and PET which are hydrophobic fibers having low water wettability, low irritation to the skin and high safety
Etc., 1.5d-3d synthetic fiber staples are preferred.
【００１８】不織布は、弾性シートの片面のみに設けて
もよいが、必要に応じて両面に設けることもできる。ま
たそれぞれ片面に不織布を設けた２枚の弾性シートを重
ね合わせて１枚シート状構造体とすることもできる。こ
のような両面に不織布が設けられた複合体は、たとえば
使い捨てオムツの本体を構成する材料として最適であ
る。The non-woven fabric may be provided on only one side of the elastic sheet, but may be provided on both sides as required. Alternatively, two elastic sheets each provided with a non-woven fabric on one side may be superposed to form a single sheet structure. Such a composite having a nonwoven fabric on both sides is optimal as a material for forming the main body of a disposable diaper, for example.
【００１９】以下に本発明の実施例について図面を参照
して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２０】[0020]
（実施例１）図１は、本発明にしたがって構成されたシ
ート状構造体の一例を示す平面図、図２は図１のＡ−Ａ
線に沿った断面図である。図において、本発明のシート
状構造体１０を構成する弾性シート１１および不織布１
２は、互いに重ね合わされ、相互に平行に延びるストラ
イプ状結合部１３において熱圧着により貼合わされてい
る。(Embodiment 1) FIG. 1 is a plan view showing an example of a sheet-like structure constructed according to the present invention, and FIG. 2 is AA of FIG.
It is sectional drawing which followed the line. In the figure, an elastic sheet 11 and a non-woven fabric 1 constituting a sheet-like structure 10 of the present invention
The two are superposed on each other and bonded by thermocompression bonding at a striped joint portion 13 extending in parallel with each other.
【００２１】この例で使用された弾性シート１１は、厚
さ約４０μｍのＥＶＡシートからなる。また不織布１２
は、ポリプロピレンのスパンレース（３０ｇ／ｍ2）
１．５ｄ〜３ｄのポリエチレンステープルを水流交絡法
によって不織布としたものである。図１には、この弾性
シート１１および不織布１２が、結合部１３において熱
圧着された状態が示されている。The elastic sheet 11 used in this example is an EVA sheet having a thickness of about 40 μm. Non-woven fabric 12
Is polypropylene spunlace (30 g / m 2 )
The polyethylene staple of 1.5d-3d was made into the nonwoven fabric by the hydroentangling method. FIG. 1 shows a state in which the elastic sheet 11 and the non-woven fabric 12 are thermocompression bonded at the joint portion 13.
【００２２】このシート状構造体１０は、下記の条件で
熱圧着して結合部を形成した。The sheet-like structure 10 was thermocompression bonded under the following conditions to form a joint.
【００２３】圧力 １．０ｋｇ／ｃｍ2 温度 １３０℃ 時間 ０．５秒 このようにして形成されたシート状構造体において、そ
の結合部の透気度は３００ｓｅｃ／１００ｃｃ、耐水圧
は２０００ｍｍ／Ｈ2Ｏ以上であり、各種衛生用品のた
めの素材として十分な通気性と液体不透過性を有してい
た。Pressure 1.0 kg / cm 2 Temperature 130 ° C. Time 0.5 seconds In the sheet-like structure thus formed, the air permeability of the joint portion is 300 sec / 100 cc, and the water pressure resistance is 2000 mm / H 2. It was O or more, and had sufficient air permeability and liquid impermeability as a material for various sanitary products.
【００２４】（実施例２）厚さ約２０μｍのＥＤＰＭフ
ィルムに、直径０．２ｍｍのニードルを貫通させること
により、１ｃｍ2あたり約１０個の微小孔（実際にはフ
ィルムの弾性により孔は塞がった状態である）を形成し
た弾性シートを用意した。この弾性シートに、ポリプロ
ピレンのスパンレース（２５ｇ／ｍ2）不織布を重ね、
下記の条件で熱圧着して結合部を形成した。(Example 2) Approximately 10 micropores per cm 2 were made by penetrating a needle having a diameter of 0.2 mm through an EDPM film having a thickness of about 20 μm (actually, the pores were closed due to the elasticity of the film). The elastic sheet having the state (1) is prepared. A polypropylene spunlace (25 g / m 2 ) non-woven fabric is layered on this elastic sheet,
The bonded portion was formed by thermocompression bonding under the following conditions.
【００２５】圧力 ５ｋｇ／ｃｍ2 温度 １２０℃ 時間 ０．５秒 このようにして形成されたシート状構造体において、そ
の結合部の透気度は２００ｓｅｃ／１００ｃｃ、耐水圧
は１０００ｍｍ／Ｈ2Ｏ以上であり、各種衛生用品のた
めの素材として十分な通気性と液体不透過性を有してい
た。Pressure 5 kg / cm 2 Temperature 120 ° C. Time 0.5 seconds In the sheet-like structure thus formed, the air permeability of the joint is 200 sec / 100 cc, and the water pressure resistance is 1000 mm / H 2 O or more. And had sufficient air permeability and liquid impermeability as a material for various hygiene products.
【００２６】（実施例３）実施例１で得られたシート状
構造体１０を、ストライプ状結合部１３の長さ方向と直
交する方向に、弾性シート１１および不織布１２の弾性
限界内で、かつ熱圧着された結合部１３における弾性シ
ート１１の弾性限界以上の長さで延伸し、ついで開放し
た。(Example 3) The sheet-shaped structure 10 obtained in Example 1 was applied in the direction perpendicular to the lengthwise direction of the striped joints 13 within the elastic limits of the elastic sheet 11 and the nonwoven fabric 12, and The elastic sheet 11 in the thermocompression bonded portion 13 was stretched to a length not less than the elastic limit and then released.
【００２７】この延伸処理により、延伸前には３００ｓ
ｅｃ／１００ｃｃであった結合部１３の透気度が、１５
０ｓｅｃ／１００ｃｃに増大した。By this stretching treatment, 300 seconds before stretching
The air permeability of the joint portion 13 which was ec / 100 cc is 15
It increased to 0 sec / 100 cc.
【００２８】（実施例４）実施例１で得られたシート状
構造体１０について、結合部１３の長さ方向と直交する
方向に、弾性シート１１の弾性限界内で、かつ不織布１
３の弾性限界以上の長さまで延伸し、ついで開放する延
伸処理を施して不織布１２を伸張させることにより、図
３に示すようなシート状構造体２０を得た。(Example 4) Regarding the sheet-like structure 10 obtained in Example 1, the nonwoven fabric 1 is within the elastic limit of the elastic sheet 11 in the direction orthogonal to the length direction of the joint portion 13.
The sheet-like structure 20 as shown in FIG. 3 was obtained by stretching the nonwoven fabric 12 to a length not less than the elastic limit of 3 and then subjecting it to a stretching treatment for opening.
【００２９】この例のシート状構造体２０では、互いに
隣接する結合部１３，１３間において、弾性シート１１
の幅よりも不織布１２の幅が大きく、これにより弾性シ
ート１１と不織布１２との間にチャンネル１５が形成さ
れている。In the sheet-shaped structure 20 of this example, the elastic sheet 11 is provided between the connecting portions 13, 13 adjacent to each other.
The width of the non-woven fabric 12 is larger than the width of the non-woven fabric, whereby the channel 15 is formed between the elastic sheet 11 and the non-woven fabric 12.
【００３０】図３のような、不織布１２のひだを有する
シート状構造体は、不織布１２のソフトで柔軟な感触が
さらに改善され、種々の衛生製品にとくに有利に適用で
きる。The sheet-like structure having the folds of the non-woven fabric 12 as shown in FIG. 3 is further improved in the soft and soft feeling of the non-woven fabric 12 and can be particularly advantageously applied to various sanitary products.
【００３１】さらに本発明において、シート状構造体
は、図１に示したように、弾性シート１１の一方の面の
みに不織布１２を設ける他、図４に示すように、両側に
不織布１２Ａおよび１２Ｂそれぞれ設けたサンドイッチ
構造のシート状構造体３０とすることも可能である。こ
の構造のシート状構造体３０は、ひだを有する不織布１
２Ａ，１２Ｂが両面に位置しているために、とくに幼児
用の使い捨てオムツの素材として最適である。Further, in the present invention, the sheet-like structure is provided with the non-woven fabric 12 only on one surface of the elastic sheet 11 as shown in FIG. 1, and also the non-woven fabrics 12A and 12B are provided on both sides as shown in FIG. It is also possible to use a sheet-like structure 30 having a sandwich structure provided respectively. The sheet-like structure 30 of this structure is a nonwoven fabric 1 having pleats.
Since 2A and 12B are located on both sides, it is particularly suitable as a material for disposable diapers for infants.
【００３２】[0032]
【発明の効果】以上に説明したように本発明の通気性の
シート状構造体は、弾性シートと、その少なくとも一方
の面に熱圧着により貼合わされた不織布とを備え、この
弾性シートに、結合部において多数の微小通気孔が形成
されている。このため弾性シートは、結合部において大
きい通気性を有し、また不織布の側では柔軟な感触を与
えるという特性を有する。したがって、特に肌に接触し
た状態で使用される種々の製品、たとえば生理用ナプキ
ンや使い捨てオムツ等に適用するのに最適である。As described above, the breathable sheet-like structure of the present invention comprises an elastic sheet and a nonwoven fabric laminated on at least one surface thereof by thermocompression bonding, and bonded to this elastic sheet. A large number of minute vent holes are formed in the part. Therefore, the elastic sheet has a property that it has a large air permeability at the joint portion and gives a soft feeling on the nonwoven fabric side. Therefore, it is most suitable for various products used especially in contact with the skin, such as sanitary napkins and disposable diapers.
【００３３】また本発明の方法によれば、弾性シート不
織布とを所望の結合部において熱圧着し、さらに必要に
応じてこの部分を延伸するという簡単な手段で、液体不
透過性でありながら十分な通気性をもつシート状構造体
を容易に得ることができる。According to the method of the present invention, the elastic sheet non-woven fabric is thermo-compressed at a desired joint portion, and further, this portion is stretched if necessary. A sheet-like structure having excellent breathability can be easily obtained.
【図１】本発明の一実施例によるシート状構造体の一部
を示す平面図。FIG. 1 is a plan view showing a part of a sheet-like structure according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線に沿った拡大断面図。FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.
【図３】本発明の他の実施例によるシート状構造体の断
面図。FIG. 3 is a sectional view of a sheet-like structure according to another embodiment of the present invention.
【図４】本発明のさらに他の実施例によるシート状構造
体の断面図。FIG. 4 is a cross-sectional view of a sheet-shaped structure according to still another embodiment of the present invention.
１０，２０，３０ シート状構造体 １１ 弾性体 １２，１２Ａ，１２Ｂ 不織布 １３ 結合部 １４ 通気孔 １５ チャンネル 10, 20, 30 Sheet-like structure 11 Elastic body 12, 12A, 12B Nonwoven fabric 13 Coupling part 14 Vent hole 15 Channel
Claims (4)
と、この弾性シートの少なくとも一方の面に配置された
不織布とを備え、前記弾性シートおよび前記不織布は、
所望のパターンの結合部において熱圧着により結合され
ており、前記弾性シートは、前記結合部において形成さ
れた通気孔を有していることを特徴とする通気性シート
状構造体。1. An elastic sheet made of a thermocompression-bondable material, and a nonwoven fabric arranged on at least one surface of the elastic sheet, wherein the elastic sheet and the nonwoven fabric are:
A breathable sheet-like structure characterized in that the elastic sheet is joined by thermocompression bonding in a desired pattern, and the elastic sheet has a vent hole formed in the joint.
少なくとも一方の面に不織布を重ね、前記弾性シートお
よび前記不織布を、互いに対向する２つの熱圧着機材を
圧着させることにより互いに結合する工程を備え、前記
熱圧着は、前記結合部において、前記弾性シートに微小
通気孔を形成するような条件で行なわれることを特徴と
する通気性シート状構造体の製造方法。2. A step of laminating a non-woven fabric on at least one surface of an elastic sheet made of a thermocompression-bondable material, and bonding the elastic sheet and the non-woven fabric to each other by crimping two thermocompression-bonding devices facing each other. The method for producing a breathable sheet-like structure, characterized in that the thermocompression bonding is performed under conditions such that minute vent holes are formed in the elastic sheet at the joint portion.
部に対応する位置においてあらかじめ形成された多数の
微小孔を有している請求項２に記載の方法。3. The method according to claim 2, wherein the elastic sheet has a large number of micropores formed in advance at least at positions corresponding to the joint portions.
永久的な伸びを生じさせ、これにより前記弾性シートと
前記不織布との間にチャンネル状の空間を形成すること
を特徴とする請求項２に記載の方法。4. The stretching after the thermocompression bonding causes permanent elongation of the nonwoven fabric, thereby forming a channel-shaped space between the elastic sheet and the nonwoven fabric. The method described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13986593A JP3470321B2 (en) | 1993-05-20 | 1993-05-20 | Breathable sheet-like structure and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13986593A JP3470321B2 (en) | 1993-05-20 | 1993-05-20 | Breathable sheet-like structure and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06328601A true JPH06328601A (en) | 1994-11-29 |
| JP3470321B2 JP3470321B2 (en) | 2003-11-25 |
Family
ID=15255354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13986593A Expired - Lifetime JP3470321B2 (en) | 1993-05-20 | 1993-05-20 | Breathable sheet-like structure and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3470321B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0921941A1 (en) * | 1996-08-29 | 1999-06-16 | BBA Nonwovens Simpsonville, Inc. | Cross-directionally stretchable elastomeric fabric laminated by thermal spot bonding |
| WO2000020207A1 (en) * | 1998-10-02 | 2000-04-13 | The Procter & Gamble Company | Elastic laminates and disposable garment employing the same |
| WO2000020205A1 (en) * | 1998-10-02 | 2000-04-13 | The Procter & Gamble Company | Elastic laminates and method for making the same |
| WO2000023273A1 (en) * | 1998-10-20 | 2000-04-27 | Exxon Chemical Patents Inc. | Breathable elastic laminates |
| JP2003103740A (en) * | 2001-09-27 | 2003-04-09 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Composite sheet of paper layer and fibrous web layer and manufacturing method therefor, multi-functional top sheet, absorber finished product and manufacturing method therefor, absorptive composite sheet and manufacturing method therefor |
| JP2003103677A (en) * | 2001-09-27 | 2003-04-09 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Composite sheet of nonwoven fabric and fiber web, absorber product and method for manufacturing composite sheet |
| US7204907B2 (en) | 2002-12-02 | 2007-04-17 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
| EP1634698A3 (en) * | 2004-09-10 | 2008-05-21 | Kenneth Cheng | Breathable elastic film and elastic nonwoven multilayer laminate and method for making same |
| JP2011025710A (en) * | 2001-11-30 | 2011-02-10 | Tredegar Film Products Corp | Absorbent article with double-sided soft and elastic components |
| JP2013126431A (en) * | 2011-12-16 | 2013-06-27 | Three M Innovative Properties Co | Diaper |
| JP2020121556A (en) * | 2019-01-29 | 2020-08-13 | 積水フーラー株式会社 | Extensible composite material |
-
1993
- 1993-05-20 JP JP13986593A patent/JP3470321B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0921941A1 (en) * | 1996-08-29 | 1999-06-16 | BBA Nonwovens Simpsonville, Inc. | Cross-directionally stretchable elastomeric fabric laminated by thermal spot bonding |
| EP0921941A4 (en) * | 1996-08-29 | 2002-06-12 | Bba Nonwovens Simpsonville Inc | Cross-directionally stretchable elastomeric fabric laminated by thermal spot bonding |
| WO2000020207A1 (en) * | 1998-10-02 | 2000-04-13 | The Procter & Gamble Company | Elastic laminates and disposable garment employing the same |
| WO2000020205A1 (en) * | 1998-10-02 | 2000-04-13 | The Procter & Gamble Company | Elastic laminates and method for making the same |
| WO2000023273A1 (en) * | 1998-10-20 | 2000-04-27 | Exxon Chemical Patents Inc. | Breathable elastic laminates |
| JP2003103740A (en) * | 2001-09-27 | 2003-04-09 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Composite sheet of paper layer and fibrous web layer and manufacturing method therefor, multi-functional top sheet, absorber finished product and manufacturing method therefor, absorptive composite sheet and manufacturing method therefor |
| JP2003103677A (en) * | 2001-09-27 | 2003-04-09 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Composite sheet of nonwoven fabric and fiber web, absorber product and method for manufacturing composite sheet |
| JP2011025710A (en) * | 2001-11-30 | 2011-02-10 | Tredegar Film Products Corp | Absorbent article with double-sided soft and elastic components |
| US7204907B2 (en) | 2002-12-02 | 2007-04-17 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
| EP1634698A3 (en) * | 2004-09-10 | 2008-05-21 | Kenneth Cheng | Breathable elastic film and elastic nonwoven multilayer laminate and method for making same |
| JP2013126431A (en) * | 2011-12-16 | 2013-06-27 | Three M Innovative Properties Co | Diaper |
| JP2020121556A (en) * | 2019-01-29 | 2020-08-13 | 積水フーラー株式会社 | Extensible composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3470321B2 (en) | 2003-11-25 |
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