JP6951395B2 - 繊維から不織布ウェブを製造するための方法及び装置 - Google Patents
繊維から不織布ウェブを製造するための方法及び装置 Download PDFInfo
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Description
この際、不織布ウェブの予固定化のための少なくとも一つの予固定化デバイスが設けられており、及び前記予固定化デバイスの下流の、不織布ウェブの固定化のための少なくとも一つの第一のカレンダーローラが存在しており、
この際、前記第一のカレンダーローラは、プロセス稼働中に第二のカレンダーローラと交換され(カレンダーローラ交換)、この際、前記第一のカレンダーローラは不織布ウェブから離され、ここで、カレンダーローラの交換の間に、不織布ウェブの予固定化が強化され、そして第二のカレンダーローラを導入した後、不織布ウェブの予固定化が再び弱められる、上記方法を教示するものである。
この際、不織布ウェブの予固定化のための少なくとも一つの予固定化デバイスが存在し、並びに前記予固定化デバイスの下流の、不織布ウェブの固定化のための少なくとも一つのカレンダーローラが存在し、
この際、第一のカレンダーローラを第二のカレンダーローラと交換するための少なくとも一つのカレンダーローラ交換デバイスが存在し、及び更に、
− カレンダーローラ交換の間の、予固定化の強さの制御及び/または調節のための、及び好ましくは、不織布ウェブのウェブ速度及び/または不織布ウェブのウェブ張力の制御及び/または調節のための少なくとも一つの制御及び/または調節デバイス、
及び/または
− カレンダーローラ交換の間の不織布ウェブの追加的な予固定化のための少なくとも一つの追加的な予固定化コンポーネント、
及び/または
− カレンダーローラ交換の間の堆積スクリーンベルトからの不織布ウェブの剥離を支援するための少なくとも一つの剥離デバイス、
を備える、前記装置である。
Claims (15)
- 繊維、特にプラスチック繊維から不織布ウェブ(1)を製造する方法であって、繊維が紡糸及び冷却され、そして繊維堆積物としてまたは不織布ウェブ(1)として、堆積場上に、特に堆積ベルト上に堆積され、
この際、不織布ウェブ(1)の予固定化のための少なくとも一つの予固定化デバイス(10)が設けられ、及び前記予固定化デバイス(10)の下流の、不織布ウェブの固定化のための少なくとも一つの第一のカレンダーローラ(13)が存在し、
この際、前記第一のカレンダーローラ(13)は、プロセスの稼働中に、第二のカレンダーローラ(15)と交換され(カレンダーローラ交換)、この際、前記第一のカレンダーローラ(13)は不織布ウェブ(1)から離され、ここで、カレンダーローラ交換の間に、不織布ウェブ(1)の予固定化が強化され、そして第二のカレンダーローラ(15)を導入した後、不織布ウェブ(1)の予固定化が再び弱められる、前記方法。 - 堆積の前に繊維が延伸される、請求項1に記載の方法。
- 繊維としてエンドレスフィラメント(2)が紡糸され、そしてスパンボンド不織布ウェブまたはメルトブロー不織布ウェブとして堆積される、請求項1または2に記載の方法。
- 前記予固定化デバイス(10)が、不織布ウェブ(1)上に作用する少なくとも一つの押し圧ローラ(11)を有し、この際、押し圧ローラ(11)を用いた予固定化が、カレンダーローラ交換の間に増強され、及びこの目的のために、好ましくは押し圧ローラ(11)の温度及び/または圧密化圧力もしくは線圧力が高められる、請求項1〜3のいずれか一つに記載の方法。
- 前記予固定化デバイス(10)が、少なくとも一つの追加的な予固定化コンポーネントを有し、ここで、前記少なくとも一つの追加的な予固定化コンポーネントが、カレンダーローラ交換の間に、不織布ウェブ(1)の追加的な予固定化のために始動される、請求項1〜4のいずれか一つに記載の方法。
- 前記少なくとも一つの追加的な予固定化コンポーネントが、少なくとも一つのプレスローラであり、該少なくとも一つのプレスローラが、カレンダーローラ交換の間に、不織布ウェブ(1)の追加的な圧密化のために不織布ウェブ(1)と接触させられる、請求項5に記載の方法。
- 前記少なくとも一つの追加的な予固定化コンポーネントが、接着剤塗布デバイス、特にスプレー接着剤塗布デバイスであり、これらのデバイスを用いて、カレンダーローラ交換の間に、不織布ウェブ(1)の追加的な予固定化のために、接着剤またはスプレー接着剤が不織布ウェブ(1)上に塗布される、請求項5または6に記載の方法。
- 前記少なくとも一つの追加的な予固定化コンポーネントが、熱風式固定化デバイス(16)であり、このデバイスを用いて、カレンダーローラ交換の間に、追加的な予固定化のために不織布ウェブ(1)に熱風が当てられる、請求項5〜7のいずれか一つに記載の方法。
- カレンダーローラ交換の間に、不織布ウェブ(1)のウェブ速度が、堆積場と不織布ウェブ(1)のための収容デバイス(特に不織布ウェブ(1)の巻きデバイス)との間で高められることを特徴とする、請求項1〜8のいずれか一つに記載の方法。
- カレンダーローラ交換の間に、堆積場と収容デバイスまたは巻きデバイスとの間に設置された、不織布ウェブ(1)と接触している回転する装置コンポーネント、特にローラの少なくとも一部の回転速度が高められる、請求項9に記載の方法。
- カレンダーローラ交換の間に、不織布ウェブの一セクションが、少なくとの一つのダンサーローラを備えたダンサーデバイス中で、連続的に緩衝される、請求項1〜10のいずれか一つに記載の方法。
- カレンダーローラ交換の間に、不織布ウェブのテンションが測定または観察され、そして制御及び/または調節される、請求項1〜11のいずれか一つに記載の方法。
- 繊維の堆積場として堆積スクリーンベルト(9)が使用され、この際、不織布ウェブは、前記少なくとも一つのカレンダーローラ(13、14)に移送される前に、堆積スクリーンベルト(9)から剥離され、及びカレンダーローラ交換の間に、不織布ウェブ(1)の剥離が、追加的な剥離デバイスを用いて支援される、請求項1〜12のいずれか一つに記載の方法。
- カレンダーローラ交換の間の堆積スクリーンベルト(9)からの不織布ウェブ(1)の剥離の支援のために、少なくとも一つの追加的な引き取りローラが接続され、そして不織布ウェブと接触させられ、及び好ましくは前記追加的な引き取りローラが、不織布ウェブ(1)のための引き取りニップを形成して、不織布ウェブ(1)の冷却のための冷却ローラと接触させられる、請求項1〜13のいずれか一つに記載の方法。
- 繊維から、好ましくはプラスチック繊維から不織布ウェブ(1)を製造するための装置、特に請求項1〜14のいずれか一つに記載の方法を実施するための装置であって、繊維を紡糸するための紡糸デバイス及び繊維を冷却するための冷却デバイス(4)が存在し、並びに不織布ウェブ(1)の繊維の堆積のための堆積場が設けられており、
この際、不織布ウェブの予固定化のための少なくとも一つの予固定化デバイス(10)が存在し、並びに前記予固定化デバイス(10)の下流の、不織布ウェブ(1)の固定化のための少なくとも一つのカレンダーローラ(13)が設けられており、
この際、第一のカレンダーローラ(13)を第二のカレンダーローラ(15)と交換するための少なくとも一つのカレンダー交換デバイスが存在し、及び更に、
− カレンダーローラ交換の間の、予固定化の強さの制御及び/または調節のための及び好ましくは、不織布ウェブ(1)のウェブ速度及び/または不織布ウェブ(1)のウェブ張力の制御及び/または調節のための少なくとも一つの制御及び/または調節デバイス、
及び/または
− カレンダーローラ交換の間の不織布ウェブ(1)の追加的な予固定化のための少なくとも一つの追加的な予固定化コンポーネント、
及び/または
− カレンダーローラ交換の間の堆積スクリーンベルト(9)からの不織布ウェブ(1)の剥離を支援するための少なくとも一つの剥離デバイス、
を備える前記装置。
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