BR112022019036A2 - Tecido multicamadas composto transparente à base de nanofibras - Google Patents

Tecido multicamadas composto transparente à base de nanofibras

Info

Publication number
BR112022019036A2
BR112022019036A2 BR112022019036A BR112022019036A BR112022019036A2 BR 112022019036 A2 BR112022019036 A2 BR 112022019036A2 BR 112022019036 A BR112022019036 A BR 112022019036A BR 112022019036 A BR112022019036 A BR 112022019036A BR 112022019036 A2 BR112022019036 A2 BR 112022019036A2
Authority
BR
Brazil
Prior art keywords
nanofibers
multilayer fabric
layer
composite multilayer
support layer
Prior art date
Application number
BR112022019036A
Other languages
English (en)
Inventor
Barana Davide
Fortunato Giuseppino
Géraldine Guex Anne
Rossi René
Pelet Thierry
Schönenberger Klaus
Sidjanski Sacha
Baatard Diane
Original Assignee
Empa Eidgenoessische Mat & Forschungsanstalt
Ecole Polytechnique Fed Lausanne Epfl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Empa Eidgenoessische Mat & Forschungsanstalt, Ecole Polytechnique Fed Lausanne Epfl filed Critical Empa Eidgenoessische Mat & Forschungsanstalt
Publication of BR112022019036A2 publication Critical patent/BR112022019036A2/pt

Links

Classifications

    • 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
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
    • D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
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    • 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
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    • B01D39/1692—Other shaped material, e.g. perforated or porous sheets
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    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment

Abstract

TECIDO MULTICAMADAS COMPOSTO TRANSPARENTE À BASE DE NANOFIBRAS. Tecido multicamadas composto (1), que compreende pelo menos uma camada de nanofibras (11) com nanofibras com diâmetros abaixo de 100 nm e uma camada de suporte (12) com microfibras com diâmetros abaixo de três mícrons, em que as camadas (11, 12) foram produzidas por eletrofiação e o tecido multicamadas (1) apresenta uma transmitância geral (T%) em ¿ = 550 nm maior que 60%, é divulgado, o que apresenta propriedades melhoradas em relação à transparência, respirabilidade e robustez. Isto é conseguido em que a pelo menos uma camada de nanofibras (11) e a camada de suporte (12) são fundidas, formando domínios sólidos (Ds) no tecido multicamadas (1), em áreas fechadas de um padrão usado no processo de produção, em que os domínios sólidos (Ds) são separados uns dos outros ou conectados, apresentando formas definidas, com distribuição espacial regular ou irregular, enquanto a morfologia da fibra de nanofibras da camada de nanofibras (11) e microfibras da camada de suporte (12) é preservada na parte superior das áreas abertas ao lado dos domínios sólidos (Ds), atingindo uma transmitância geral maior do que a dada pela soma das camadas individuais (11, 12).
BR112022019036A 2020-03-23 2021-03-18 Tecido multicamadas composto transparente à base de nanofibras BR112022019036A2 (pt)

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