JPH0791752B2 - Composite sheet - Google Patents
Composite sheetInfo
- Publication number
- JPH0791752B2 JPH0791752B2 JP62169144A JP16914487A JPH0791752B2 JP H0791752 B2 JPH0791752 B2 JP H0791752B2 JP 62169144 A JP62169144 A JP 62169144A JP 16914487 A JP16914487 A JP 16914487A JP H0791752 B2 JPH0791752 B2 JP H0791752B2
- Authority
- JP
- Japan
- Prior art keywords
- woven fabric
- composite sheet
- sheet according
- fibers
- film
- 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 - Lifetime
Links
- 239000002131 composite material Substances 0.000 title claims description 14
- 239000004745 nonwoven fabric Substances 0.000 claims description 54
- 239000000835 fiber Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 229920000297 Rayon Polymers 0.000 claims description 3
- 239000002964 rayon Substances 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- -1 polyethylene Polymers 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 （１）発明の目的 （産業上の利用分野） 本発明は、防水フィルム積層用不織布に関する。さらに
詳しくは、衣類、防水カバー、紙オムツなどの衛生材、
手術着等の医療用品、使い捨てカイロ、合羽等の使い捨
て用途に適するドレープ性にすぐれた複合シートに関す
る。DETAILED DESCRIPTION OF THE INVENTION (1) Purpose of the Invention (Field of Industrial Application) The present invention relates to a nonwoven fabric for waterproof film lamination. More specifically, sanitary materials such as clothing, waterproof covers, and disposable diapers,
The present invention relates to a composite sheet having excellent drapeability suitable for medical supplies such as surgical gowns, disposable body warmers, disposable feathers and the like.
（従来の技術） 近年、前記使い捨て製品に布的外観や機械的強度を付与
するため、防水、通気防水性等の機能性合成樹脂基体に
不織布を積層一体化した複合シートが使用されるように
なってきた。(Prior Art) In recent years, in order to impart a cloth-like appearance and mechanical strength to the disposable products, a composite sheet in which a nonwoven fabric is laminated and integrated on a functional synthetic resin substrate such as waterproof and breathable waterproof has been used. It's coming.
例えば、特開昭56−26076号に通気防水性フィルムと不
織布積層一体化した防水衣料・カバーが開示されてい
る。使い捨てオムツのバックシートとしては、防水フィ
ルムと不織布の積層体が実開昭59−149903号に提案され
ている。また、最近の使い捨てカイロには、通気防水性
フィルムとスパンボンド不織布の積層体が被覆材として
使用されている。For example, Japanese Patent Application Laid-Open No. 56-26076 discloses a waterproof garment / cover in which a breathable waterproof film and a nonwoven fabric are integrally laminated. As a backsheet of a disposable diaper, a laminate of a waterproof film and a non-woven fabric is proposed in Japanese Utility Model Publication No. 59-149903. In recent disposable body warmers, a laminate of a breathable waterproof film and a spunbonded nonwoven fabric is used as a covering material.
不織布と合成樹脂フィルムとの積層は、防水または通気
防水性フィルム単体に欠ける特性を不織布により付与し
ようとするものであるから、フィルム単体が有する軽量
性・ドレープ性を阻害してしまうような不織布の使用は
好ましくなく、低目付でドレープ性および強度にすぐれ
た不織布の使用が好ましい。柔軟性またはドレープ性を
有する不織布としては、流体（液体または気体）で繊維
を交絡させる方法による不織布が一般的であるが、繊維
同士を交絡結合する方法でえられるため、低目付化を図
るのが難しく、軽量性の面で問題がある。The lamination of the non-woven fabric and the synthetic resin film is intended to impart the properties lacking in the waterproof or breathable waterproof film unit by the non-woven fabric. It is not preferable to use, and it is preferable to use a non-woven fabric having a low basis weight and excellent drape property and strength. As a non-woven fabric having flexibility or drape property, a non-woven fabric produced by a method of entanglement of fibers with a fluid (liquid or gas) is generally used. However, there is a problem in terms of lightness.
そのため、低目付で強度にすぐれたスパンボンド不織布
が積層用材として有用されている。Therefore, a spunbonded nonwoven fabric having a low basis weight and excellent strength is used as a material for lamination.
しかしながら、スパンボンド不織布は、その製法上、縦
方向強度にはすぐれるが、横方向破断強度が低い、さら
に、縦方向への柔軟性またはドレープ性に欠けるという
問題を有している。However, the spunbonded nonwoven fabric has a problem in that although it has excellent strength in the machine direction, it has a low breaking strength in the machine direction and lacks flexibility or drapability in the machine direction due to its manufacturing method.
なお、流体交絡不織布の低目付化を図るため、不織布の
形成後にその横方向に拡張する技術が知られているが、
特定の伸長率で伸長した特定の低目付を有する不織布を
防水性合成樹脂フィルムに積層すると、本発明の下記目
的を達成することができることを教示する文献は見当ら
ない。Incidentally, in order to reduce the basis weight of the fluid entangled nonwoven fabric, a technique of expanding the nonwoven fabric in the lateral direction after the formation is known,
No literature is found that the following objects of the present invention can be achieved by laminating a nonwoven fabric having a specific low basis weight stretched at a specific elongation rate on a waterproof synthetic resin film.
本発明の目的は、前述した従来技術の問題点に鑑み、軽
量であるにも拘らず、機械的強度およびドレープ性にす
ぐれた、不織布と合成樹脂フィルムとの複合シートを提
供することにある。An object of the present invention is to provide a composite sheet of a non-woven fabric and a synthetic resin film, which is excellent in mechanical strength and drapability in spite of its light weight, in view of the above-mentioned problems of the prior art.
（２）発明の構成 （問題点を解決するための手段） 本発明は、流体で繊維交絡させて形成した目付が25〜10
0g/m2の不織布をその横方向または縦方向に25〜500％拡
張した目付が５〜20g/m2の不織布を厚み50μ以下の防水
性合成樹脂フィルムに一体的に積層した複合シートに存
する。(2) Structure of the Invention (Means for Solving the Problems) The present invention has a basis weight of 25 to 10 formed by entanglement of fibers with a fluid.
A composite sheet in which a nonwoven fabric of 0 g / m 2 is expanded 25 to 500% in the transverse direction or the longitudinal direction and a fabric weight of 5 to 20 g / m 2 is integrally laminated on a waterproof synthetic resin film with a thickness of 50 μm or less .
（実施例） 本発明を実施例によってさらに説明すると、つぎのとお
りである。(Examples) The present invention will be described in more detail with reference to Examples.
積層基材としての防水性合成樹脂フィルムの材料として
は、ポリエチレン、ポリプロピレン等のポリオレフィン
系、ポリエステル系、ナイロン系、アクリル系、ウレタ
ン系などが好ましい。また、通気防水性フィルムとして
は、例えば、前記材料を延伸法、溶媒除去法、加硫化
法、発泡法などを用いて多孔質化したものが積層基材と
される。こうした防水または通気防水性フィルムの厚み
は50μ以下が、特に約５〜35μが軽量性、ドレープ性に
すぐれた積層基材として好ましい。As the material of the waterproof synthetic resin film as the laminated base material, polyolefin-based materials such as polyethylene and polypropylene, polyester-based materials, nylon-based materials, acrylic-based materials, urethane-based materials and the like are preferable. Further, as the breathable waterproof film, for example, a film obtained by making the above material porous by a stretching method, a solvent removal method, a vulcanization method, a foaming method or the like is used as the laminated base material. The thickness of such a waterproof or breathable waterproof film is preferably 50 μm or less, and more preferably about 5 to 35 μm as a laminated base material excellent in light weight and drapability.
前記フィルムの積層用不織布として、流体、好ましくは
噴射水流で繊維交絡させる方法（以下、流体交絡または
流体交絡法という）による不織布であって、目付が25〜
100g/m2のものをその横方向（CD）または縦方向（MD）
に25〜500％拡張した、目付が５〜20g/m2のものが使用
される。The non-woven fabric for laminating the film is a non-woven fabric produced by a method of entanglement of fibers with a fluid, preferably a jet of water (hereinafter referred to as fluid entanglement or a fluid entanglement method), having a basis weight of 25 to
100 g / m 2 in the horizontal direction (CD) or vertical direction (MD)
25 to 500% expanded and a basis weight of 5 to 20 g / m 2 is used.
ここで、パラレルウエブやランダムウエブを流体交絡処
理した原反不織布はCD方向に、クロスパラレルウエブを
流体交絡処理した原反不織布はMD方向に拡張することで
目的とする不織布が形成される。このように流体交絡法
により製造された不織布は、繊維間交絡により結合され
ているため、拡張により交絡度低下による強度低下は生
じるものの、柔軟性またはドレープ性は向上する。こう
した点で、拡張により融着部分が切断される、融着法に
より製造されるメルトボンド不織布やスパンボンド不織
布などと異なる。このように拡張された不織布は、流体
交絡不織布に特有の非常にすぐれたドレープ性を有する
と同時に、ほぼ同目付のスパンボンド不織布よりもすぐ
れた破断強度を有する。拡張手段としては、テンター等
の種々の公知手段を使用することができる。Here, a target nonwoven fabric is formed by expanding a raw fabric non-woven fabric obtained by fluid entanglement processing of a parallel web or a random web in the CD direction, and a raw fabric non-woven fabric obtained by fluid entanglement processing of a cross parallel web in the MD direction. Since the non-woven fabric manufactured by the fluid entanglement method is bonded by the inter-fiber entanglement, the expansion causes a decrease in the entanglement degree but a reduction in the strength, but the flexibility or the drape property is improved. In this respect, it differs from a melt-bonded non-woven fabric or a spun-bonded non-woven fabric produced by the fusion-bonding method in which the fusion-bonded portion is cut by expansion. The thus expanded non-woven fabric has very excellent drapability characteristic of the fluid-entangled non-woven fabric, and at the same time, has a breaking strength superior to that of the spunbonded non-woven fabric having almost the same weight. As the expanding means, various known means such as a tenter can be used.
不織布の構成繊維としては、特に限定はなく、ポリエチ
レン、ポリプロピレン等のポリオレフィン系繊維、ポリ
エステル系繊維、ナイロン系繊維、ポリアクリル系繊
維、レーヨン系繊維などを用途に応じて単独または混繊
使用される。例えば、疎水性が望まれる場合にはポリオ
レフィン系繊維などが、親水性が望まれる場合にはレー
ヨン系繊維などが使用される。フィルムとの溶着性をよ
くするうえでは、これと同系の素材を使用することが好
ましい。また、前記繊維の繊度、繊維長は、特に限定さ
れないが、繊度は0.5〜15d、繊維長は40〜10mmのものが
使用される。The constituent fibers of the non-woven fabric are not particularly limited, and polyolefin fibers such as polyethylene and polypropylene, polyester fibers, nylon fibers, polyacrylic fibers, rayon fibers, etc. may be used alone or as mixed fibers depending on the application. . For example, when hydrophobicity is desired, polyolefin fiber or the like is used, and when hydrophilicity is desired, rayon fiber or the like is used. In order to improve the weldability with the film, it is preferable to use a material similar to this. The fineness and fiber length of the fibers are not particularly limited, but those having a fineness of 0.5 to 15 d and a fiber length of 40 to 10 mm are used.
フィルムと拡張不織布との接着は、不織布をテンター等
で拡張した状態においてフィルムと接着してもよいし、
拡張作用の解放後、フィルムと接着してもよい。拡張作
用の解放後における拡張不織布は、10％以内の収縮を示
すが、この収縮が好ましくない場合には、拡張状態にお
いて80℃以上で熱セットすれば、拡張作用の解放後も収
縮が生じない。また、この際、10％（重量）以下、好ま
しくは５％（重量）以下の熱融着を混繊した不織布を拡
張後、熱セットすることもできる。熱セットされた拡張
不織布は、熱処理を受けないものに比べ、強度はまさる
が、ドレープ性で劣る。それでも、スパンボンドよりも
良好な強度とドレープ性を示す。熱セットした拡張不織
布と未処理の拡張不織布のいずれを使用するかは、その
用途に応じて使い分けることができる。なお、前記熱セ
ットにかえて不織布の拡張状態を安定的に維持し、前記
熱セットによるドレープ性の劣化を防止し、所要の強度
を付与するには、その不織布の拡張状態で再度これを流
体交絡法により処理することもできる。また、不織布の
強度をさらに向上させるだけの目的からすれば、前記再
交絡処理後、前記熱セットすることもできる。The adhesion of the film and the expanded nonwoven may be adhered to the film in a state where the nonwoven is expanded with a tenter or the like,
After releasing the expanding action, it may be adhered to the film. The expanded non-woven fabric shows a shrinkage of 10% or less after releasing the expansion action. If this shrinkage is not preferable, if heat setting is performed at 80 ° C or higher in the expanded state, the shrinkage does not occur even after the expansion action is released. . Further, at this time, it is also possible to heat-set after expanding the nonwoven fabric mixed with 10% (weight) or less, preferably 5% (weight) or less of heat fusion. The heat-set expanded nonwoven fabric is superior in strength to the non-heat treated nonwoven fabric but inferior in drape property. Nevertheless, it shows better strength and drape than spunbond. Whether to use the heat-set expanded non-woven fabric or the untreated expanded non-woven fabric can be used properly according to the application. In order to maintain the expanded state of the non-woven fabric stably in place of the heat set, prevent deterioration of the drape property due to the heat set, and impart a required strength, apply the fluid again in the expanded state of the non-woven fabric. It can also be processed by the confounding method. Further, for the purpose of only further improving the strength of the nonwoven fabric, the heat setting can be performed after the re-entanglement treatment.
フィルムと拡張不織布は、熱溶着や接着剤などの適宜手
段で全面接着またはパターン状に部分接着される。通気
防水性フィルムと拡張不織布の積層にあっては、接着部
における通気性阻害を考慮すると部分接着が好ましい。
延伸によりヒビ割れを形成するEVA層を両者の接着層に
用いれば、ヒビ割れ部が通気チャネルとなるため、接着
力および通気度にすぐれた積層体が得られる。具体的に
は、（１）原反不織布とEVA層をエンボス接着した後、
両者を所定量拡張し、そしてフィルムと接合する法と、
（２）延伸してヒビ割れを形成したEVA層をフィルムと
拡張不織布間に介在させて三者を接合一体化する法が挙
げられる。The film and the expanded non-woven fabric are entirely bonded or partially bonded in a pattern by an appropriate means such as heat welding or an adhesive. In the lamination of the breathable waterproof film and the expanded non-woven fabric, partial adhesion is preferable in consideration of the obstruction of air permeability at the adhesion part.
If an EVA layer that forms a crack by stretching is used as the adhesive layer between the two, the cracked portion serves as a ventilation channel, so that a laminate having excellent adhesive strength and air permeability can be obtained. Specifically, (1) after embossing the original fabric and EVA layer,
A method of expanding both of them by a predetermined amount and joining them with a film,
(2) A method may be mentioned in which an EVA layer that has been stretched to form cracks is interposed between the film and the expanded non-woven fabric to join and integrate the three.
流体交絡不織布を得るには、例えば、特開昭57−39268
号、同59−125954号の各公報などに開示された技術を利
用することができる。To obtain a fluid entangled nonwoven fabric, for example, JP-A-57-39268
The technology disclosed in each of the publications, No. 59-125954, etc. can be used.
表１に不織布の強度と剛軟度の関係を、また、表２に不
織布とポリエチレンフィルムとの積層体の剛軟度を示
す。Table 1 shows the relationship between the strength and bending resistance of the nonwoven fabric, and Table 2 shows the bending resistance of the laminate of the nonwoven fabric and the polyethylene film.
発明の効果 本発明に係る複合シートによれば、防水性合成樹脂フィ
ルムに積層した不織布が低目付であるにもかかわらず、
流体交絡不織布に特有の非常にすぐれたドレープ性を有
すると同時に、柔軟性・強度にすぐれているから、前記
フィルムの軽量性・ドレープ性を阻害することがない。
したがって、積層体全体としてもそうしたすぐれた性能
を有する。 Effects of the Invention According to the composite sheet of the present invention, the nonwoven fabric laminated on the waterproof synthetic resin film has a low basis weight,
The fluid entangled non-woven fabric has very good drapability, and at the same time has excellent flexibility and strength, so that it does not impair the lightness and drapability of the film.
Therefore, the laminated body as a whole has such excellent performance.
Claims (8)
100g/m2の不織布をその横方向または縦方向に25〜500％
拡張した目付が５〜20g/m2の不織布を厚み50μ以下の防
水性合成樹脂フィルムに一体的に積層した複合シート。1. A basis weight of 25 to 25 is formed by entanglement of fibers with a fluid.
25-500% of 100g / m 2 non-woven fabric in its transverse or longitudinal direction
A composite sheet in which an expanded non-woven fabric having a basis weight of 5 to 20 g / m 2 is integrally laminated on a waterproof synthetic resin film having a thickness of 50 μm or less.
許請求の範囲第１項記載の複合シート。2. The composite sheet according to claim 1, wherein the non-woven fabric is composed of hydrophobic fibers.
ある特許請求の範囲第２項記載の複合シート。3. The composite sheet according to claim 2, wherein the hydrophobic fiber is a polyolefin fiber.
許請求の範囲第１項記載の複合シート。4. The composite sheet according to claim 1, wherein the non-woven fabric is composed of hydrophilic fibers.
許請求の範囲第４項記載の複合シート。5. The composite sheet according to claim 4, wherein the hydrophilic non-woven fabric is rayon fiber.
トされたものである特許請求の範囲第１項記載の複合シ
ート。6. The composite sheet according to claim 1, wherein the nonwoven fabric is heat-set at 80 ° C. or higher after the expansion.
特許請求の範囲第６項記載の複合シート。7. The composite sheet according to claim 6, wherein the non-woven fabric contains 10% or less of heat fusion fibers.
維交絡されて前記拡張状態が維持されている特許請求の
範囲第１項記載の複合シート。8. The composite sheet according to claim 1, wherein the non-woven fabric is entangled with a fluid again in the expanded state to maintain the expanded state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169144A JPH0791752B2 (en) | 1987-07-07 | 1987-07-07 | Composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169144A JPH0791752B2 (en) | 1987-07-07 | 1987-07-07 | Composite sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6414358A JPS6414358A (en) | 1989-01-18 |
| JPH0791752B2 true JPH0791752B2 (en) | 1995-10-04 |
Family
ID=15881102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62169144A Expired - Lifetime JPH0791752B2 (en) | 1987-07-07 | 1987-07-07 | Composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791752B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103062U (en) * | 1990-02-03 | 1991-10-25 | ||
| US5151320A (en) * | 1992-02-25 | 1992-09-29 | The Dexter Corporation | Hydroentangled spunbonded composite fabric and process |
| JP5730637B2 (en) * | 2011-03-25 | 2015-06-10 | 七王工業株式会社 | Wet tarpaulin |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4942970A (en) * | 1972-08-30 | 1974-04-23 | ||
| JPS5590664A (en) * | 1978-12-28 | 1980-07-09 | Teijin Ltd | Long fiber parallel sheet and long fiber extended sheet |
| JPS6041222Y2 (en) * | 1981-12-04 | 1985-12-14 | 花王株式会社 | sanitary napkin |
| JPS59204960A (en) * | 1983-05-04 | 1984-11-20 | 旭化成株式会社 | Production of long fiber nonwoven fabric |
| US4578066A (en) * | 1984-05-29 | 1986-03-25 | Kimberly-Clark Corporation | Incontinent garment, catamenial device or wound dressing |
| JPS6156646A (en) * | 1984-08-27 | 1986-03-22 | 三井東圧化学株式会社 | Sanitary napkin |
-
1987
- 1987-07-07 JP JP62169144A patent/JPH0791752B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6414358A (en) | 1989-01-18 |
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