JPH08199465A - Production of fiber nonwoven sheet excellent in surface flatness - Google Patents
Production of fiber nonwoven sheet excellent in surface flatnessInfo
- Publication number
- JPH08199465A JPH08199465A JP7006606A JP660695A JPH08199465A JP H08199465 A JPH08199465 A JP H08199465A JP 7006606 A JP7006606 A JP 7006606A JP 660695 A JP660695 A JP 660695A JP H08199465 A JPH08199465 A JP H08199465A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- fiber
- roll
- web sheet
- fiber web
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 8
- 239000005060 rubber Substances 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 239000000470 constituent Substances 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- -1 polyethylene Polymers 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 6
- 229920000573 polyethylene Polymers 0.000 abstract description 6
- 239000002344 surface layer Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 25
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000003490 calendering Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱可塑性高分子繊維か
らなる表面平坦性に優れた不透明性を有する繊維不織シ
ートの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a non-woven fiber sheet made of a thermoplastic polymer fiber having excellent surface flatness and opacity.
【０００２】[0002]
【従来の技術】不透明性が高く、且つ、高度な表面平坦
性を有する繊維シートを製造する方法としては、従来か
らテンター法や、熱ロール法、及びフェルトカレンダー
法など加工方法がある。一方、熱処理時の繊維シートの
幅方向での収縮を防止するためには、熱ロール上の繊維
シートをフェルトで拘束するフェルトカレンダー法が好
ましいとされている。更に、特公昭４３−２１１１２号
公報によれば、冷却固化する過程における繊維シートの
幅方向での収縮を防止することができるとされている。
しかしながら、この方法では、加熱拘束された繊維シー
トが、直接冷却ロールで拘束冷却されにくいために、加
熱、冷却時に幅方向の不均一な収縮が発生し、高度な平
坦性を有し、シート幅方向における寸法安定性に優れた
繊維不織シートを製造するには充分ではなかった。2. Description of the Related Art As a method for producing a fiber sheet having high opacity and a high degree of surface flatness, there have conventionally been processing methods such as a tenter method, a heat roll method, and a felt calender method. On the other hand, in order to prevent shrinkage of the fiber sheet in the width direction during heat treatment, a felt calendering method in which the fiber sheet on the heat roll is constrained with felt is preferred. Furthermore, according to Japanese Patent Publication No. 43-21112, it is possible to prevent shrinkage in the width direction of the fiber sheet during the process of cooling and solidifying.
However, in this method, since the heat-constrained fiber sheet is hard to be restrained and cooled directly by the cooling roll, uneven shrinkage in the width direction occurs during heating and cooling, and the sheet has a high flatness and a sheet width. It was not sufficient to produce a fiber nonwoven sheet having excellent dimensional stability in the direction.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、従来のシー
ト加熱冷却法を用いた場合の上記欠点を解決し、高度な
平坦性を有し、幅方向にも均一な寸法安定性があると同
時に、高度な不透明性を有する繊維不織シートを提供す
ることを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks when the conventional sheet heating / cooling method is used, has high flatness, and has uniform dimensional stability in the width direction. At the same time, it aims to provide a fibrous non-woven sheet having a high degree of opacity.
【０００４】[0004]
【課題を解決するための手段】本発明者等は、鋭意上記
課題の解決に取組んだ結果、加熱後の繊維ウエブシート
の冷却方法を工夫することにより上記課題が解決できる
ことを見出し本発明を完成した。すなわち、本発明は熱
可塑性高分子の繊維からなる繊維ウエブシートの少くと
もその表面の繊維の一部を融着せしめてなる表面を有す
る熱可塑性高分子繊維の繊維不織シートの製造方法にお
いて、繊維ウエブシートを加熱し、その表面構成繊維の
少くとも一部を軟化若しくは融解せしめた後、前記ウエ
ブシートを静摩擦係数０．５以上の平滑表面を有する冷
却体に接触させることを特徴とする繊維不織シートの製
造方法である。As a result of earnest efforts to solve the above-mentioned problems, the present inventors have found that the above-mentioned problems can be solved by devising a method of cooling a fibrous web sheet after heating, thereby completing the present invention. did. That is, the present invention is a method for producing a fiber non-woven sheet of a thermoplastic polymer fiber having a surface obtained by fusing at least a part of the fiber on the surface of a fiber web sheet made of a fiber of a thermoplastic polymer, A fiber characterized by comprising heating a fibrous web sheet to soften or melt at least a part of its surface constituent fibers, and then bringing the web sheet into contact with a cooling body having a smooth surface having a static friction coefficient of 0.5 or more. It is a method for manufacturing a non-woven sheet.
【０００５】本発明の繊維不織シートの製造方法は、所
定の厚さ、目付に調製された繊維ウエブシートをその少
くとも表面を加熱する加熱手段と前記加熱手段を経た繊
維ウエブシートの表面に接触してその表面を冷却する冷
却ロール等の冷却手段とよりなる装置を用いて実施され
る。このような装置としては、フェルトカレンダーに冷
却ロールを付加した装置が好ましく用いられるが、ピン
テンター、クリップテンター、熱ロール若しくは対をな
す熱ロール等の加熱手段の出口側に冷却ロールを付加し
た装置を用いて実施することができる。The method for producing a non-woven fiber sheet according to the present invention comprises a heating means for heating at least the surface of a fibrous web sheet having a predetermined thickness and a basis weight, and a surface of the fibrous web sheet after the heating means. It is carried out by using an apparatus including a cooling means such as a cooling roll that comes into contact with the surface to cool its surface. As such a device, a device in which a cooling roll is added to a felt calender is preferably used, but a device in which a cooling roll is added to the outlet side of heating means such as a pin tenter, a clip tenter, a heat roll or a pair of heat rolls is preferably used. Can be carried out.
【０００６】図１は、フェルトカレンダーを用いた本発
明の繊維不織シートの製造の実施態様を示す。図１は、
所定厚さ、目付に調製された繊維ウエブシート（４）が
無端の環状フェルト帯（２）と内部にスチーム等の熱媒
体を通して加熱される周面が平滑な加熱用シリンダーロ
ール（１）とで形成されるフェルトカレンダーの閉じ込
め加熱帯域（拘束加熱帯域）に導入され、加熱ドラムの
周面に環状フェルト帯（２）で押しつけられて搬送され
る間に加熱され、少くとも表面層の構成繊維が軟化若し
くは半融解状態とされる。加熱帯域を通過した後、繊維
ウエブシートは静摩擦係数０．５以上を有する材料で被
覆した冷却ロール（５）の周面上Ｃでニップされ、ここ
で繊維ウエブシートの表面構成繊維が積極的に冷却固化
される間に、繊維ウエブシートの表面における構成繊維
間の融着状態が固定される。冷却ロール（５）は、内部
に水等の冷却媒体が導入され、積極的に所定の冷却温度
に保たれる。冷却効果を高めるために、冷却ロール
（５）の周面での繊維ウエブシート（４）のテンシヨシ
や接触圧を高めることが有効である。なお、図中
（３1）〜（３5 ）は、無端の環状フェルト帯（２）を
加熱ドラム（１）の周面に沿って押付けガイドするため
の遊びロールであり、（３6 ）は加工の完了した表面平
滑な繊維不織シート（４′）を送り出す偏向デリベリー
ロールである。通常、加熱用シリンダーロール（１）、
冷却ロール（５）及び偏向デリベリーロール（３ 6 ）
は、図示していない駆動手段により駆動される。[0006] FIG.
1 illustrates an embodiment of making a light fibrous nonwoven sheet. Figure 1
A fiber web sheet (4) prepared to have a predetermined thickness and weight is
Endless annular felt belt (2) and heat medium such as steam inside
Cylinder for heating with a smooth surface that is heated through the body
Closure of felt calender formed with
Is introduced into the heating zone (restraint heating zone) and
It is transported by being pressed against the peripheral surface with an annular felt belt (2).
It is heated during heating, and at least the constituent fibers of the surface layer soften
It is in a semi-molten state. Fibers after passing through the heating zone
The web sheet is coated with a material that has a coefficient of static friction of 0.5 or more.
It is nipped at C on the peripheral surface of the covered cooling roll (5),
The surface constituent fibers of the fiber web sheet are actively cooled and solidified by
While being formed, the constituent fibers on the surface of the fiber web sheet
The fused state between them is fixed. Cooling roll (5) is inside
A cooling medium such as water is introduced into the
Kept in. Cooling roll to enhance the cooling effect
Tenshiyoshi of the fiber web sheet (4) on the peripheral surface of (5)
It is effective to increase the contact pressure. In the figure
(31) ~ (3Five) Is an endless annular felt belt (2)
To guide pressing along the peripheral surface of the heating drum (1)
Play roll of (36) Is the flat surface after processing
Deflection delivery delivering smooth non-woven fiber sheet (4 ')
It is a roll. Usually, heating cylinder roll (1),
Cooling roll (5) and deflection delivery roll (3 6)
Are driven by driving means (not shown).
【０００７】前記の繊維ウエブシートの加熱は、熱可塑
性高分子の繊維を繊維ウエブシートの少くとも表面層に
おいて軟化若しくは融解させるに必要な温度、熱量を加
熱シリンダーロールから供給することが必要である。繊
維を形成している熱可塑性高分子の軟化点〜融点温度に
加熱するに要する熱量は、繊維ウエブシートの目付、厚
さ及び所望の融着の程度等加工目的に応じて、加熱用シ
リンダーロールの温度、周面速度を適宜選択して調整す
ることによって与えられる。冷却ロール（５）は、無端
の環状フェルト帯と加熱用シリンダーロール（１）とで
形成される加熱帯域を放れた繊維シートの温度が８０℃
以上であれば、どこに置いても効果があるが、好ましく
は加熱帯域の離れる位置から１０〜１０００mmに配置さ
れるが、より効果を高めるためには、できるだけ繊維シ
ートが拘束加熱帯域から離れた直後に近い位置に配置さ
れることが好ましい。シートの温度が８０℃以下である
と幅方向に不均一な収縮が発生し、平坦性に優れたシー
トを得ることができない。The heating of the above-mentioned fiber web sheet requires that the temperature and the amount of heat necessary for softening or melting the fibers of the thermoplastic polymer in at least the surface layer of the fiber web sheet are supplied from the heating cylinder roll. . The amount of heat required to heat the thermoplastic polymer forming the fiber to a softening point to a melting point temperature is a cylinder roll for heating depending on the processing purpose such as the basis weight of the fiber web sheet, the thickness and the desired degree of fusion. It is given by appropriately selecting and adjusting the temperature and the peripheral surface speed. In the cooling roll (5), the temperature of the fiber sheet released from the heating zone formed by the endless annular felt band and the heating cylinder roll (1) is 80 ° C.
If it is above, it is effective wherever it is placed, but it is preferably placed 10 to 1000 mm from the position where the heating zone is separated, but in order to enhance the effect further, immediately after the fiber sheet is separated from the restrained heating zone as much as possible. It is preferable to be arranged at a position close to. When the temperature of the sheet is 80 ° C. or less, uneven shrinkage occurs in the width direction, and a sheet having excellent flatness cannot be obtained.
【０００８】冷却ロール（５）は、無端の環状フェルト
帯と加熱シリンダーロールで形成される拘束加熱帯域を
離れた直後の繊維ウエブシートの軟化若しくは融解繊維
をできるだけ早期に冷却する位置に設置されるのが好ま
しく、冷却ロール（５）が加熱帯域を離れた繊維ウエブ
シートに例えばニップ線Ｃで押圧力０．１ｇ／cm2 以上
の加圧下で接触することが表面平坦性の高い繊維不織シ
ートを得る上で望ましい。冷却ロール（５）は、軟化点
温度未満好ましくは軟化点よりも５℃低い温度まで繊維
ウエブシートの表層を冷却することによって、構成繊維
間の急速に融着固化させることが好ましい。冷却温度は
低ければ低いほどよい。軟化点以下５℃程度低い温度で
の冷却では、得られた繊維不織シートの熱収縮率が大き
くなり、また平坦性良好な繊維不織シートを得ることが
難しい。The cooling roll (5) is installed at a position for cooling the softened or melted fiber of the fibrous web sheet immediately after leaving the confined heating zone formed by the endless annular felt belt and the heating cylinder roll. It is preferable that the chill roll (5) is in contact with the fibrous web sheet leaving the heating zone, for example, at the nip line C under a pressing force of 0.1 g / cm 2 or more and the surface of the non-woven fabric is highly flat. Is desirable in obtaining. The chill roll (5) preferably cools the surface layer of the fibrous web sheet to a temperature below the softening point, preferably 5 ° C. below the softening point, to rapidly fuse and solidify the constituent fibers. The lower the cooling temperature, the better. Cooling at a temperature about 5 ° C. below the softening point increases the heat shrinkage rate of the obtained fibrous nonwoven sheet, and it is difficult to obtain a fibrous nonwoven sheet having good flatness.
【０００９】冷却ロール（５）は、その表面が平滑ロー
ル、あるいはエンボス、梨地等の凹凸があってもよいが
表面の静摩擦係数が０．５以上より好ましくは０．６以
上に設定される。静摩擦係数が０．５以下では、繊維不
織シートに平坦性を充分に付与することができない。静
摩擦係数が、０．５以上の材質としては、ガラス、金
属、皮革、セルロース物質、合成高分子、ゴムなどがあ
るが、本発明は静摩擦係数が０．５以上であれば材質に
ついては当事者が必要に応じて単品、あるいはブレンド
品で作成することができる。より一般的にはゴム材質を
使用するのがよい。ゴムロール材質としては、天然ゴ
ム、スチレンブタジエンゴム、ブタジエンゴム、ブチル
ゴム、エチレンプロピレンゴム、クロロプレンゴム、ク
ロロスルホン化ポリエチレンゴム、ニトリルゴム、ウレ
タンゴム、多硫化ゴム、アクリルゴム、エピクロルヒド
リンゴム、シリコーンゴム、フッ素ゴム等があるが、必
要に応じて単体叉は複合品も使用することができる。ま
た、加硫ゴム硬度はＪＩＳ−Ａ型硬度計で３０°〜１０
０°の範囲が好ましい。ロールの材料は、実用上３０℃
〜３００℃の温度に耐えるものとするのが好ましい。The surface of the cooling roll (5) may be smooth, or may have irregularities such as emboss or satin finish, but the coefficient of static friction of the surface is set to 0.5 or more, preferably 0.6 or more. If the coefficient of static friction is 0.5 or less, it is not possible to sufficiently impart flatness to the fiber nonwoven sheet. Materials having a static friction coefficient of 0.5 or more include glass, metal, leather, cellulosic materials, synthetic polymers, rubbers, etc. It can be made as a single item or a blended item as required. More generally, it is better to use a rubber material. Rubber roll materials include natural rubber, styrene butadiene rubber, butadiene rubber, butyl rubber, ethylene propylene rubber, chloroprene rubber, chlorosulfonated polyethylene rubber, nitrile rubber, urethane rubber, polysulfide rubber, acrylic rubber, epichlorohydrin rubber, silicone rubber, fluorine. Although there is rubber or the like, a single piece or a composite piece can be used if necessary. The vulcanized rubber hardness is 30 ° to 10 by JIS-A type hardness tester.
A range of 0 ° is preferred. Roll material is practically 30 ℃
It preferably withstands temperatures up to 300 ° C.
【００１０】本発明の繊維不織シートの製造方法に用い
る繊維ウエブは、熱可塑性の繊維形成性高分子の繊維、
例えば、ポリエチレン、ポリプロピレン等のポリオレフ
ィン繊維、ナイロン６、ナイロン６６等のポリアミド繊
維、ポリエチレンテレフタレート等のポリエステル系繊
維が代表的なものである。これら熱可塑性高分子の繊維
からなる原料繊維ウエブシートは、湿式法、ケミカルボ
ンド法、サーマルボンド法、エアレイ法等の乾式不織製
造法、スパンレース法、スパンボンド法、メルトブロー
法、ニードルパンチ法、スティッチボンド法、フラッシ
ュ紡糸法等既知の不織布製造技術の適用により得ること
ができる。The fibrous web used in the method for producing the fibrous nonwoven sheet of the present invention is a fiber of thermoplastic fiber-forming polymer,
Typical examples are polyolefin fibers such as polyethylene and polypropylene, polyamide fibers such as nylon 6 and nylon 66, and polyester fibers such as polyethylene terephthalate. A raw material fiber web sheet made of these thermoplastic polymer fibers is prepared by a wet method, a chemical bond method, a thermal bond method, a dry non-woven manufacturing method such as an air lay method, a spun lace method, a spun bond method, a melt blow method, a needle punch method. It can be obtained by applying known non-woven fabric manufacturing techniques such as the stitch bond method and flash spinning method.
【００１１】[0011]
【実施例】以下、本発明を実施例により具体的に説明す
るが、実施例は本発明を限定するものではない。実施例
における繊維不織シートの性能評価データは、以下に定
義する測定方法によるものである。 （１）表面平坦性の評価方法 本発明の特殊被覆ロールを使用して製造された繊維不織
シート（目付６０ｇ／ｍ2 、厚み０．２０mm）を１ｍ×
１ｍのサイズでカットして平面上に置きシートの起伏の
高さを測定した。 （２）収縮率の評価方法 本発明の特殊被覆ロールを使用して製造されるシートの
幅方向の収縮率の測定は、熱可塑性高分子の繊維からな
る繊維ウエブシートの幅方向に５cm間隔で線を引き、フ
ェルトカレンダーに特殊被覆冷却ロールを付加した装置
にて、加熱冷却処理した後、繊維不織シート上の加熱前
に線を引いた間隔の距離を測定して次式で収縮率を算出
した。EXAMPLES The present invention will be specifically described below with reference to examples, but the examples do not limit the present invention. The performance evaluation data of the fiber nonwoven sheet in the examples is based on the measuring method defined below. (1) Surface Flatness Evaluation Method A fiber non-woven sheet (weight per unit area: 60 g / m 2 , thickness: 0.20 mm) produced by using the special coating roll of the present invention is 1 m ×
The sheet was cut into a size of 1 m and placed on a flat surface to measure the height of the undulations. (2) Method of evaluating shrinkage The shrinkage in the width direction of a sheet produced using the special coating roll of the present invention is measured at 5 cm intervals in the width direction of a fiber web sheet made of thermoplastic polymer fibers. After drawing a wire and heating and cooling with a device with a special coating cooling roll added to the felt calender, measure the distance of the line drawing interval before heating on the fiber non-woven sheet and calculate the shrinkage ratio with the following formula. It was calculated.
【００１２】幅方向の収縮率（％）＝｛１−（処理後の
長さ（cm）／５（cm）｝×１００ （３）不透明性の評価方法 繊維不織シートを１４cm×１４cmのサイズでカット後、
タングステンランプを光源としてシートの１０cm×１０
cmに光をあて、フォーメーションテスターＦＭＴ−１０
００Ａ（野村商事（株）製）で繊維不織シートの透過光
量を測定し下記の式で算出し不透明性とした。Shrinkage rate (%) in the width direction = {1- (length after treatment (cm) / 5 (cm)} × 100 (3) Evaluation method of opacity The fiber non-woven sheet has a size of 14 cm × 14 cm After cutting with
10 cm x 10 sheets using tungsten lamp as light source
Applying light to cm, formation tester FMT-10
00A (manufactured by Nomura Shoji Co., Ltd.) was used to measure the amount of transmitted light of the fiber non-woven sheet, and calculated by the following formula to obtain opacity.
【００１３】不透明性（％）＝（１−透過率）×１００
＝（１−サンプルの透過光量／サンプル無しの透過光
量）×１００ （４）繊維不織シートを幅３０mm、長さ２００mmのサイ
ズにカットして、把持長１００mm 、引張スピード２０
０mm／分でＪＩＳ−Ｌ１０９６に準拠して測定した。幅
方向、長さ方向それぞれの強度を各１５点測定し、その
算術平均値を求めた。 ＜実施例＞図１の冷却ロール（５）を付設したフェルト
カレンダー処理機に目付６０ｇ／ｍ2 、厚さ０．２４m
m、幅１３００mmのフラッシュ紡糸法により得たポリエ
チレン繊維ウエブシート（繊維の融点温度１３９℃）を
供給し、表面層の繊維の一部が熱により融着した目付６
０ｇ／ｍ2 、厚さ０．２mmの各種のポリエチレン繊維不
織シートを調製した。各々の繊維不織シートの性能評価
結果を表１に示す。Opacity (%) = (1-transmittance) × 100
= (1-amount of transmitted light of sample / amount of transmitted light without sample) × 100 (4) A non-woven fiber sheet is cut into a size of 30 mm in width and 200 mm in length, a gripping length of 100 mm and a pulling speed of 20.
It was measured according to JIS-L1096 at 0 mm / min. The strength in each of the width direction and the length direction was measured at each of 15 points, and the arithmetic mean value was calculated. <Example> A felt calendering machine equipped with the cooling roll (5) of FIG. 1 has a basis weight of 60 g / m 2 and a thickness of 0.24 m.
A polyethylene fiber web sheet (melting point temperature of the fiber: 139 ° C.) obtained by a flash spinning method having a width of 1300 mm and a width of 1300 mm was supplied, and part of the fiber of the surface layer was fused by heat.
Various polyethylene fiber nonwoven sheets having a thickness of 0 g / m 2 and a thickness of 0.2 mm were prepared. Table 1 shows the performance evaluation results of the respective fiber nonwoven sheets.
【００１４】この実施例においてカレンダー処理機に付
設した冷却ロールは、自己駆動ロールとし閉じ込め加熱
帯域の終点から４５０mmの位置に設置した。冷却ロール
（５）は、表１に示す材料で被覆して形成した平滑周面
を有する外径３５０mmのロールであり、内部に冷却水を
通すことにより表面の冷却温度を調整できる設計とし
た。一方、加熱用シリンダーロールは、直径１４５０mm
の円筒形で自己駆動した。閉じ込め加熱帯域は、加熱用
シリンダーロールの周面と無端環状フェルト、加熱ドラ
ム／遊びロール（３1 ）のニップ線（Ａ）から加熱ドラ
ムの遊びロール（３5 ）のニップ線（Ｂ）の間で形成さ
れる。In this example, the cooling roll attached to the calendering machine was a self-driven roll and was installed at a position 450 mm from the end point of the confinement heating zone. The cooling roll (5) is a roll having an outer diameter of 350 mm, which has a smooth peripheral surface formed by coating with the material shown in Table 1, and is designed so that the cooling temperature of the surface can be adjusted by passing cooling water inside. On the other hand, the heating cylinder roll has a diameter of 1450 mm.
It was self-driven with a cylindrical shape. The confinement heating zone is between the peripheral surface of the heating cylinder roll and the endless annular felt, between the nip line (A) of the heating drum / idling roll (3 1 ) and the nip line (B) of the idling roll (3 5 ) of the heating drum. Is formed by.
【００１５】 カレンダーの運転条件 加熱シリンダーロールの表面温度 １３５℃ 繊維ウエブシートの搬送速度 ８５ｍ／min 〃 加熱帯域通過時間 ２．４sec 冷却ロールの表面温度 １５℃ なお、繊維ウエブシート（４）は、結晶性ポリエチレン
（Ｍ１値＝０．９６）をトリクロロフルオロメタンに高
温高圧下で溶解し、相分離させた後、大気にフラッシュ
させて繊維ウエブを得、前記目付、厚さのウエブシート
に調製したものである。Calender operating conditions Surface temperature of heating cylinder roll 135 ° C. Conveying speed of fiber web sheet 85 m / min 〃 Heating zone transit time 2.4 sec Surface temperature of cooling roll 15 ° C. The fiber web sheet (4) is crystalline. Prepared by dissolving a water-soluble polyethylene (M1 value = 0.96) in trichlorofluoromethane under high temperature and high pressure, phase separation, and flashing to the atmosphere to obtain a fiber web, and a web sheet having the above-mentioned weight and thickness. Is.
【００１６】表１から明らかなように、静摩擦係数が
０．５と大きい冷却ロールを使用して製造したポリエチ
レン繊維不織シートは、平坦性に優れ不透明性が高く幅
方向における熱収縮率が低いものである。As is apparent from Table 1, the polyethylene fiber non-woven sheet produced by using the cooling roll having a large static friction coefficient of 0.5 has excellent flatness, high opacity and low heat shrinkage in the width direction. It is a thing.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】本発明の方法により、繊維不織シートの
加熱、冷却時に発生する幅方向の不均一な収縮が抑制さ
れるために、平坦性が著しく改善された繊維不織シート
が得られる。かくして、高品質の不透明度を有する繊維
不織シートを製造工程においても無駄なく製造すること
ができる。According to the method of the present invention, since the non-uniform shrinkage in the width direction which occurs during heating and cooling of the fibrous non-woven sheet is suppressed, a fibrous non-woven sheet having significantly improved flatness can be obtained. . Thus, a high-quality fiber non-woven sheet having opacity can be manufactured without waste even in the manufacturing process.
【図１】本発明の一実施例の側面図である。FIG. 1 is a side view of an embodiment of the present invention.
１…加熱用シリンダーロール ２…無端の環状フェルト帯 ３1 〜３5 …遊びロール ３6 …偏向ロール ４…繊維ウエブシート ４′…繊維不織シート ５…冷却ロール1 ... heating cylinder roll 2 ... endless annular felt band 3 1 to 3 5 ... idler rolls 3 6 ... deflection roll 4 ... fiber web sheet 4 '... fibrous nonwoven sheet 5 ... cooling roll
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年２月８日[Submission date] February 8, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図１[Name of item to be corrected] Figure 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 FIG.
Claims (3)
ブシートの少くともその表面の繊維の一部を融着せしめ
てなる表面を有する熱可塑性高分子繊維の繊維不織シー
トの製造方法において、繊維ウエブシートを加熱し、そ
の表面構成繊維の少くとも一部を軟化若しくは融解せし
めた後、前記ウエブシートを静摩擦係数０．５以上の平
滑表面を有する冷却体に接触させることを特徴とする繊
維不織シートの製造方法。1. A method for producing a fibrous nonwoven sheet of thermoplastic polymer fibers having a surface formed by fusing at least some of the fibers on the surface of a fibrous web sheet made of thermoplastic polymer fibers, A fiber characterized by comprising heating a fibrous web sheet to soften or melt at least a part of its surface constituent fibers, and then bringing the web sheet into contact with a cooling body having a smooth surface having a static friction coefficient of 0.5 or more. Nonwoven sheet manufacturing method.
覆面である請求項１記載の繊維不織シートの製造方法。2. The method for producing a fiber non-woven sheet according to claim 1, wherein the surface of the cooling body is a surface coated with a rubber elastic material.
却体と接触させる請求項１記載の繊維不織シートの製造
方法。3. The method for producing a fibrous nonwoven sheet according to claim 1, wherein the fibrous web sheet after heating is brought into contact with the cooling body while being pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7006606A JPH08199465A (en) | 1995-01-19 | 1995-01-19 | Production of fiber nonwoven sheet excellent in surface flatness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7006606A JPH08199465A (en) | 1995-01-19 | 1995-01-19 | Production of fiber nonwoven sheet excellent in surface flatness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08199465A true JPH08199465A (en) | 1996-08-06 |
Family
ID=11643013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7006606A Withdrawn JPH08199465A (en) | 1995-01-19 | 1995-01-19 | Production of fiber nonwoven sheet excellent in surface flatness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08199465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090801A1 (en) * | 2009-06-30 | 2012-04-19 | Andritz Kusters Gmbh | Calender for treating a product web |
| JP2013129925A (en) * | 2011-12-20 | 2013-07-04 | Kao Corp | Spunbond nonwoven fabric manufacturing method |
-
1995
- 1995-01-19 JP JP7006606A patent/JPH08199465A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090801A1 (en) * | 2009-06-30 | 2012-04-19 | Andritz Kusters Gmbh | Calender for treating a product web |
| US8545677B2 (en) * | 2009-06-30 | 2013-10-01 | Andritz Kusters Gmbh | Calender for treating a product web |
| JP2013129925A (en) * | 2011-12-20 | 2013-07-04 | Kao Corp | Spunbond nonwoven fabric manufacturing method |
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