ES2616956T3 - Red no tejida y fibras con propiedades de electreto, procesos de fabricación de las mismas y su uso - Google Patents

Red no tejida y fibras con propiedades de electreto, procesos de fabricación de las mismas y su uso Download PDF

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Publication number
ES2616956T3
ES2616956T3 ES11745976.8T ES11745976T ES2616956T3 ES 2616956 T3 ES2616956 T3 ES 2616956T3 ES 11745976 T ES11745976 T ES 11745976T ES 2616956 T3 ES2616956 T3 ES 2616956T3
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Prior art keywords
fibers
additive
manufacturing processes
woven net
water
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ES11745976.8T
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English (en)
Inventor
Ralph Berkemann
Patrick Lauffenburger
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Fiberweb Holdings Ltd
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Fiberweb Holdings Ltd
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
    • D06M11/05—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof with water, e.g. steam; with heavy water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0435—Electret
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/603—Including strand or fiber material precoated with other than free metal or alloy
    • Y10T442/607—Strand or fiber material is synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/626—Microfiber is synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]

Abstract

Una red de electreto no tejida que comprende fibras hechas a partir de un material de polímero termoplástico que comprende un polímero, un primer aditivo (a) y un segundo aditivo (b), en el que el primer aditivo (a) comprende una amina impedida y el segundo aditivo (b) comprende una bisamida orgánica obtenida a partir de diaminas orgánicas que se hacen reaccionar con dos ácidos carboxílicos.

Description

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La presente invención también proporciona una lámina de múltiples capas en la que al menos una capa está formada a partir de una red de electreto no tejida de la presente invención. En una realización preferente de la presente invención, las láminas de múltiples capas comprenden una capa de trama o malla no tejida de endurecimiento para hacerla plegable, capa que contiene en al menos una de sus superficies una capa de una red que comprende microfibras y/o nanofibras. Preferentemente, tal capa contiene fibras sopladas en estado fundido hechas de polímeros termoplásticos que contienen un primer aditivo (a) que comprende una amina impedida y un segundo aditivo (b) que comprende una bisamida orgánica obtenida a partir de diaminas orgánicas que se hacen reaccionar con dos ácidos carboxílicos.
En otra realización preferente de la presente invención, las láminas de múltiples capas comprenden una combinación de una capa de red de electreto protegida y una capa de filtro gruesa que se selecciona entre el grupo que consiste en papel de alta capacidad preparado por vía húmeda, papel de alta capacidad preparado por vía seca, material no tejido soplado en estado fundido de masa elevada, material no tejido de hilatura directa modular y una capa no tejida de hilatura directa microdenier, capa de filtro gruesa que se ubica corriente arriba en la dirección de flujo de aire de la capa de red de electreto no tejida. Tales capas de filtro gruesas se describen, por ejemplo, en el documento de Patente EP 0 960 645 A2. La capa de filtro gruesa es una capa hecha de fibras gruesas y tiene por lo general una baja densidad.
La invención también se refiere a un proceso para fabricar la red de electreto no tejida de la presente invención. Por lo tanto, la presente invención también se refiere un proceso para fabricar una red de electreto no tejida, proceso que comprende las etapas de:
i) proporcionar un material de polímero termoplástico que comprende un polímero, un primer aditivo (a) y un segundo aditivo (b), en el que el primer aditivo (a) comprende una amina impedida, y el segundo aditivo (b) comprende una bisamida orgánica obtenida a partir de diaminas orgánicas que se hacen reaccionar con dos ácidos carboxílicos; ii) formar fibras a partir del material de polímero termoplástico; iii) formar una red no tejida a partir de las fibras que se forman en la etapa (ii); y iv) tratar las fibras que se forman en la etapa (ii) y/o la red no tejida que se forma en la etapa (iii) con un líquido polar para obtener un material no tejido con una carga de electreto.
El material de polímero termoplástico, el primer aditivo (a) y el segundo aditivo (b) que se pueden usar de forma adecuada en el proceso se han definido anteriormente en el presente documento.
En la etapa (iii), se puede hacer uso de cualquier proceso conocido de formación de redes.
En la etapa (iii), se usa preferentemente un proceso por vía húmeda. Preferentemente, en la etapa (ii) se usa un proceso de hilatura directa o un proceso de soplado en estado fundido. Más preferentemente, en la etapa (ii) se usa un proceso de soplado en estado fundido.
En la etapa (iv), las fibras que se forman en la etapa (ii) y/o la red no tejida que se forman la etapa (iii) se tratan con una cantidad eficaz de un líquido polar de un modo tal que se obtenga una red no tejida con una carga de electreto. De forma adecuada, tal tratamiento se lleva a cabo por medio de un tratamiento de pulverización. El líquido polar puede ser un alcohol líquido o agua. Preferentemente, se usa agua como líquido polar. Preferentemente, se usa agua destilada o desionizada. También se pueden usar mezclas de líquidos polares. El líquido polar se pulveriza preferentemente sobre las fibras que se forman en la etapa (ii) y/o sobre el material no tejido que se forma en la etapa (iii) por medio de una boquilla o cualquier otro dispositivo formador de gotitas, que sea capaz de formar gotitas que comprendan fracciones de diferentes diámetros de gotita.
De forma adecuada, el líquido polar se pulveriza sobre las fibras inmediatamente después de que estas se hayan formado, por ejemplo, inmediatamente después de que las fibras hayan abandonado la boquilla de hilado. Como líquido de enfriamiento se conoce el uso de líquidos polares, tales como agua, para enfriar las fibras inmediatamente después de su formación. En el caso en el que se use agua como líquido de enfriamiento, tal etapa de enfriamiento se denomina enfriamiento con agua.
A este respecto, se observa que el documento de Patente US 3.959.421 desvela un molde convencional de soplado en estado fundido y un aparato colector con boquillas de pulverización de agua ubicadas entre los mismos. Las boquillas, son boquillas accionadas por aire que usan aire comprimido para dispersar, o atomizar, el agua líquida para producir una pulverización de gotitas de agua. Las gotitas se dirigen hacia lados opuestos de las fibras extruidas en una posición corriente arriba a donde la incidencia formaría de otro modo un proceso sin enfriamiento. Las gotitas de agua enfrían las fibras principalmente a través de enfriamiento por evaporación en el que las gotitas de líquido se vaporizan, retirando de ese modo el calor latente de vaporización de las fibras. La solicitud desvelada de fluido de enfriamiento permite una tasa de producción de hasta aproximadamente 3,0 Ib/h/in. La tasa de producción está limitada por la tasa de agua de enfriamiento máxima permisible sin la formación de una denominada red húmeda. En este contexto, se observa que una red húmeda es una red que tiene agua líquida atrapada entre los huecos del tejido. Además, el documento de Patente US 4.594.202 desvela el uso de boquillas atomizadoras de
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Claims (1)

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ES11745976.8T 2010-08-23 2011-08-18 Red no tejida y fibras con propiedades de electreto, procesos de fabricación de las mismas y su uso Active ES2616956T3 (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP10008742 2010-08-23
EP10008742 2010-08-23
EP11164767 2011-05-04
EP11164767 2011-05-04
PCT/EP2011/064214 WO2012025451A1 (en) 2010-08-23 2011-08-18 Nonwoven web and fibers with electret properties, manufacturing processes thereof and their use

Publications (1)

Publication Number Publication Date
ES2616956T3 true ES2616956T3 (es) 2017-06-14

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ES11745976.8T Active ES2616956T3 (es) 2010-08-23 2011-08-18 Red no tejida y fibras con propiedades de electreto, procesos de fabricación de las mismas y su uso

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Country Link
US (1) US10036107B2 (es)
EP (1) EP2609238B1 (es)
JP (2) JP2013540904A (es)
CN (1) CN103348048B (es)
BR (1) BR112013004279B1 (es)
CA (1) CA2809200C (es)
DK (1) DK2609238T3 (es)
ES (1) ES2616956T3 (es)
HK (1) HK1188265A1 (es)
HU (1) HUE031927T2 (es)
MX (1) MX349639B (es)
PL (1) PL2609238T3 (es)
PT (1) PT2609238T (es)
TW (1) TWI601769B (es)
WO (1) WO2012025451A1 (es)

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