WO2010029586A1 - Procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, et produit obtenu grâce au procédé - Google Patents

Procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, et produit obtenu grâce au procédé Download PDF

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Publication number
WO2010029586A1
WO2010029586A1 PCT/IT2008/000584 IT2008000584W WO2010029586A1 WO 2010029586 A1 WO2010029586 A1 WO 2010029586A1 IT 2008000584 W IT2008000584 W IT 2008000584W WO 2010029586 A1 WO2010029586 A1 WO 2010029586A1
Authority
WO
WIPO (PCT)
Prior art keywords
superficial portion
layer
nanocomposites
order
constituted
Prior art date
Application number
PCT/IT2008/000584
Other languages
English (en)
Inventor
Moreno Cremaschi
Original Assignee
Biotecnology Advice And Designer International S.R.L.
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 Biotecnology Advice And Designer International S.R.L. filed Critical Biotecnology Advice And Designer International S.R.L.
Priority to PCT/IT2008/000584 priority Critical patent/WO2010029586A1/fr
Publication of WO2010029586A1 publication Critical patent/WO2010029586A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/007—Fixing of chemicals, e.g. dyestuffs, on textile materials by application of electric energy
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
    • D06M10/025—Corona discharge or low temperature plasma
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/06—Inorganic compounds or elements
    • 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/08—Processes in which the treating agent is applied in powder or granular form

Definitions

  • the present invention relates to a surface treatment method, particularly for materials, fabrics and other laminar elements having similar properties, and to a product obtained with the method.
  • Background art Offers of so-called "technical" clothing products, designed mainly for sports or professional use, which have additional properties such as for example impermeableness to atmospheric agents or high-level antibacterial and antimycotic properties, currently exist on the market.
  • the aim of the present invention is to solve the above-mentioned drawbacks, by providing a surface treatment method that allows effective and durable application of specific properties to materials and fabrics of various types.
  • an object of the invention is to provide a method that can be applied to both raw and previously processed materials and fabrics.
  • Another object of the invention is to provide a method that can be performed with low costs.
  • a surface treatment method particularly for materials, fabrics and other laminar elements having similar properties, which consists in striking at least one substantially superficial portion of the material with electromagnetic radiation of preset frequency, in order to break up and remove organic and inorganic impurities that are present in the material itself; subjecting the superficial portion of the material to a stream of plasma, in order to modify its shape; interpenetrating the superficial portion of the material with a layer such as a matrix, having a substantially lattice-like configuration and a thickness of no more than a few millionths of a meter.
  • a surface treatment method particularly for materials, fabrics and other laminar elements having similar properties, which consists in striking at least one substantially superficial portion of the material with electromagnetic radiation of preset frequency, in order to break up and remove organic and inorganic impurities that are present in the material itself; subjecting the superficial portion of the material to a stream of plasma, in order to modify its shape; interpenetrating
  • the surface treatment method provides initially a step A for striking at least one substantially superficial portion of a material, a fabric or other laminar element having similar properties with electromagnetic radiation having a preset frequency.
  • This operation allows to break up and thus remove the impurities that are present in such material.
  • the method according to the invention can be applied usefully in order to give specific antibacterial properties to wrapping films and sheets or to paper tablecloths of various shapes and sizes.
  • the preset frequency of the electromagnetic radiation is comprised between 20 kHz and 2 MHz, so as to define substantially an electromagnetic radiation of the type of ultrasound.
  • Ultrasound (but the use of different types of electromagnetic radiation is not excluded) produces a high local increase in temperature, which allows to break up and remove the impurities caused by the production processes with which the fabrics have been obtained and previously processed.
  • the superficial portion is struck in step A by electromagnetic radiation of the type of ultrasound at high intensity, above 10 W/cm 2 .
  • This operation produces a cavitational collapse with consequent local increase in temperature up to 5000 K (at a rate of even more than 109 K/s), and in pressure up to 1000 atm. Further, during this step, physical effects such as shear forces, bonds, Shockwaves and microjets occur due to the ultrasound.
  • step A fabrics having a composition of polyamides (72%) and elastane (28%), of which many products designed for underwear are made: the action of the ultrasound is aimed at the simultaneous breakup of both inorganic impurities formed by silicone treatment waste and organic residues.
  • step B After striking with ultrasound, during step A, the superficial portion, and practically in line with such step, the superficial portion is subjected in a step B to a stream of plasma, which changes its configuration, preparing the fabric for the subsequent step, as will become better apparent hereinafter.
  • plasma stream is of the type of cold plasma in vacuum and comprises an oxygen-nitrogen mixture.
  • plasma is constituted substantially by a plurality of charged particles (electrons and other positively or negatively charged particles), which as a whole have no charge.
  • This modification affects only the superficial portion of the fabric and does not alter substantially the inherent properties of the processed material.
  • the surface treatment method provides for the interpenetration, in a step C, of the superficial portion of the material with a layer, such as a matrix, that has a substantially lattice-like configuration.
  • Such layer has a thickness which does not exceed a few millionths of a meter and is for example on the order of five millionths of a meter.
  • the preliminary step described above for removing impurities is necessary indeed due to the thickness of the layer, which is so low; otherwise the impurities would in fact hinder its complete adhesion.
  • step C the superficial portion of the material with a layer of predefined material having such a low thickness therefore achieves the proposed aim and objects.
  • the presence of such layer in fact allows to utilize fully the properties given by the elements that compose such layer (as will be described hereinafter).
  • the low thickness ensures compliance with the inherent properties of the fabric to which the method relates, such as for example elasticity and color.
  • the steps that precede the interpenetration step C which act substantially only on the superficial portion of the fabric, again respect its integrity, facilitating and inducing at the same time the effective adhesion of the layer thereto.
  • the three steps presented above are provided with the aid of known technologies, such as ultrasound, plasma and the use of sol gel, but each one is functional to the purpose and is implemented in the subsequent process, so that the application of the three concatenated steps is new and with results that are targeted to the aim of the patent. These techniques are used in other applications, but individually with different targets. In this concatenation and characterization of passages, results of products that cannot be obtained according to the background art are achieved.
  • the interpenetration step C consists first of all of a step C 1 for immersing at least the superficial portion of fabric in a bath, at an input rate that is predefined according to a suitable rule of motion.
  • Such bath contains a colloidal suspension, such as sol gel, which carries doping particles, such as nanocomposites, having a thickness of no more than approximately 100 nanometers, for example 10 run.
  • a colloidal suspension such as sol gel
  • doping particles such as nanocomposites
  • the doping particles carried by the colloidal suspension are nanocomposites selected among zinc oxide, titanium dioxide, cadmium telluride, silver, carbon.
  • the doping particles can be brought into contact with the colloidal suspension beforehand and subsequently introduced in the bath intended to receive the fabric.
  • the doping particles and the colloidal suspension can meet directly in the bath in which the two elements are introduced separately.
  • the superficial portion is extracted in a step C2 from such bath, at an exit speed that is predefined according to a suitable rule of motion.
  • the exit speed can be constant and equal for example to 0.7 m/s.
  • step C3 for heating the film is performed in order to cause its cross-linking and polymerization, consequently obtaining the lattice-like layer fixed to the superficial portion of the fabric.
  • the heating C3 consists of a step C3.a for drying the gel film, bringing the temperature to an evacuation value comprised between 40° and 60°. In this manner, evacuation of the liquids contained in the gel and cross-linking of the film are produced: a pre-layer that is substantially deposited on the superficial portion of the material is thus obtained.
  • such evacuation value is equal to 50 0 C.
  • Cross-linking is due to the presence, in the colloidal suspension described above, of a silicon precursor, which due to the drying C3.a is arranged according to a plurality of interwoven fibers, contained in the colloidal suspension in the amount of 15 g/1.
  • the heating C3 increases further, in a step C3.b, the temperature at least of the superficial portion, until a polymerization value comprised between 150 0 C and 250 0 C is reached; the superficial portion is kept at this polymerization value in a step C3.c for a time comprised between 1 second and 1 minute.
  • the polymerization value is equal to 178°C and at this temperature the superficial portion is kept in step C3.c for 16 seconds.
  • Fixing is facilitated by the previous stream of plasma to which the fabric was subjected in step B, since the modification of the geometry alters the surface gradient between the fabric and the layer, ensuring mutual adhesion.
  • Polymerization and consequent, shrinkage at the molecular level of the mesh formed by the lattice-like configuration of the layer in fact cause the fixation, by means of an atomic bond of the covalent type, of such layer to the superficial portion of the fabric, which, as already noted, is shaped complementarily.
  • fixing obtained at high temperatures is stable even if the fabric is subsequently brought again to temperatures that are similar to the polymerization temperatures, after the cooling that follows the end of the retention step C3.c.
  • the layer thus obtained has a thickness of no more than a few millionths of a meter and comprises the above cited doping particles brought into contact with the fabric by means of the colloidal suspension.
  • the method according to the invention can be applied effectively both to raw fabrics (or other materials) and to fabrics that have been subjected to previous processes.
  • the fabric (or another material or laminar element having similar properties) obtained by means of the method described above comprises a layer that is capable of giving such fabric specific mechanical, chemical, electromagnetic, technical properties.
  • This layer which has a thickness of no more than a few millionths of a meter, interpenetrates in step C a substantially superficial portion of the fabric, which has a modified configuration.
  • the layer and the superficial portion are mutually and rigidly coupled by means of an atomic bond of the covalent type, in the manner described previously.
  • the layer comprises doping particles, such as nanocomposites, having a thickness of no more than approximately one hundred nanometers.
  • the nanocomposites are constituted by zinc oxide hydrocolloids, which are capable of giving the fabric the ability to shield electromagnetic emissions, such as for example ultraviolet and/or infrared radiation.
  • the nanocomposites are constituted by titanium dioxide hydrocolloids, which catalyze the reaction of decomposition of the organic compounds that are present on the superficial portion; this embodiment therefore facilitates the removal of stains formed accidentally on the fabric.
  • the nanocomposites are instead constituted by cadmium telluride hydrocolloids; this compound gives the fabric the ability to induce a luminescence of such fabric which is activated as a consequence of exposure to ultraviolet radiation.
  • the nanocomposites comprised within the layer are constituted by silver hydrocolloids, which give the fabric antibacterial, antimycotic and antifermentation properties.
  • a colloidal suspension such as a sol gel, after receiving the addition (doping) with silver hydrocolloids in the amount, by way of example, of 3 g/1, is introduced in the bath.
  • the nanocomposites are constituted by carbon nanotubes.
  • the protective scope claimed herein includes embodiments that provide for the superficial interpenetration of layers (with a thickness of no more than a few millionths of a meter) composed of doping particles of various kinds, in order to give other specific properties, even in mutual combination.
  • the method according to the invention is applied to fabrics having various compositions (as well as to other types of material); these compositions include, merely by way of non-limiting example of the application of the invention, synthetic fibers based on polyester or polyamide, celluloids, pure or non-pure cotton. These fabrics can thus be used for the manufacture of items of clothing for any use: sports clothing, swimming costumes, underwear (daytime and night underwear), generic clothing, shoes, accessories.
  • the surface treatment method according to the invention fully achieves the proposed aim, since by forming a layer of the type of a lattice-like matrix with a thickness of no more than a few millionths of a meter, which interpenetrates a substantially superficial portion of a material, of a fabric or of another laminar element, previously struck by electromagnetic radiation having a preset frequency and subjected to a stream of plasma, an effective and durable application of specific properties to such fabric is achieved.
  • the invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.

Abstract

L’invention concerne un procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, comprenant les étapes consistant à : exposer (A) au moins une partie sensiblement superficielle du matériau à un rayonnement électromagnétique de fréquence prédéterminée, afin de fractionner et de retirer les impuretés organiques et inorganiques présentes dans le matériau ; soumettre (B) la partie superficielle du matériau à un flux de plasma, afin de modifier sa forme ; faire pénétrer (C) dans la partie superficielle du matériau une couche telle qu’une matrice, présentant une configuration sensiblement sous forme de réseau et une épaisseur ne dépassant pas quelques millionièmes de mètre.
PCT/IT2008/000584 2008-09-11 2008-09-11 Procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, et produit obtenu grâce au procédé WO2010029586A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000584 WO2010029586A1 (fr) 2008-09-11 2008-09-11 Procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, et produit obtenu grâce au procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000584 WO2010029586A1 (fr) 2008-09-11 2008-09-11 Procédé de traitement de surface, en particulier pour des matériaux, tissus et autres éléments laminaires présentant des propriétés similaires, et produit obtenu grâce au procédé

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WO2010029586A1 true WO2010029586A1 (fr) 2010-03-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015092135A1 (fr) * 2013-12-16 2015-06-25 Teknologian Tutkimuskeskus Vtt Oy Revêtement sol-gel assisté par plasma pour structures alvéolaires et tissus non tissés

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6146462A (en) * 1998-05-08 2000-11-14 Astenjohnson, Inc. Structures and components thereof having a desired surface characteristic together with methods and apparatuses for producing the same
DE10127957A1 (de) * 2001-06-08 2002-12-12 Feinchemie Gmbh Sebnitz Antistatische Beschichtung
US20020192385A1 (en) * 2001-01-05 2002-12-19 Degussa Ag Method of applying a fluoroalkyl-functional organopolysiloxane coationg having durable water and oil repellent properties to polymeric substrates
US20030013369A1 (en) * 1999-07-19 2003-01-16 Soane David S. Nanoparticle-based permanent treatments for textiles
DE10213080A1 (de) * 2002-03-23 2003-10-16 Werner Schmitz Mit nanodünnen Funktionsschichten versehene flexible Substratbahnen
US20040117915A1 (en) * 2002-12-19 2004-06-24 The Hong Kong Polytechnic University Multifunctional surface treatment for textiles
WO2005123891A2 (fr) * 2004-05-14 2005-12-29 Reckitt Benckiser (Uk) Limited Ameliorations de produits ou associees a ces produits
WO2006049478A1 (fr) * 2004-11-08 2006-05-11 Bio Dreams Co. Ltd. Produits fibreux antimicrobiens
US20060166003A1 (en) * 2003-06-16 2006-07-27 William Marsh Rice University Fabrication of carbon nanotube reinforced epoxy polymer composites using functionalized carbon nanotubes
US20070259196A1 (en) * 2006-05-03 2007-11-08 Carl Freudenberg Kg Antimicrobial sheet and use of said sheet

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6146462A (en) * 1998-05-08 2000-11-14 Astenjohnson, Inc. Structures and components thereof having a desired surface characteristic together with methods and apparatuses for producing the same
US20030013369A1 (en) * 1999-07-19 2003-01-16 Soane David S. Nanoparticle-based permanent treatments for textiles
US20020192385A1 (en) * 2001-01-05 2002-12-19 Degussa Ag Method of applying a fluoroalkyl-functional organopolysiloxane coationg having durable water and oil repellent properties to polymeric substrates
DE10127957A1 (de) * 2001-06-08 2002-12-12 Feinchemie Gmbh Sebnitz Antistatische Beschichtung
DE10213080A1 (de) * 2002-03-23 2003-10-16 Werner Schmitz Mit nanodünnen Funktionsschichten versehene flexible Substratbahnen
US20040117915A1 (en) * 2002-12-19 2004-06-24 The Hong Kong Polytechnic University Multifunctional surface treatment for textiles
US20060166003A1 (en) * 2003-06-16 2006-07-27 William Marsh Rice University Fabrication of carbon nanotube reinforced epoxy polymer composites using functionalized carbon nanotubes
WO2005123891A2 (fr) * 2004-05-14 2005-12-29 Reckitt Benckiser (Uk) Limited Ameliorations de produits ou associees a ces produits
WO2006049478A1 (fr) * 2004-11-08 2006-05-11 Bio Dreams Co. Ltd. Produits fibreux antimicrobiens
US20070259196A1 (en) * 2006-05-03 2007-11-08 Carl Freudenberg Kg Antimicrobial sheet and use of said sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015092135A1 (fr) * 2013-12-16 2015-06-25 Teknologian Tutkimuskeskus Vtt Oy Revêtement sol-gel assisté par plasma pour structures alvéolaires et tissus non tissés

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