EP3995625B1 - Verfahren zum hydrophobieren von kleidungsstücken - Google Patents

Verfahren zum hydrophobieren von kleidungsstücken Download PDF

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Publication number
EP3995625B1
EP3995625B1 EP21201022.7A EP21201022A EP3995625B1 EP 3995625 B1 EP3995625 B1 EP 3995625B1 EP 21201022 A EP21201022 A EP 21201022A EP 3995625 B1 EP3995625 B1 EP 3995625B1
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Prior art keywords
textile products
bath
weight
amount
washing
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EP21201022.7A
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English (en)
French (fr)
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EP3995625A1 (de
EP3995625C0 (de
Inventor
Pino GIDARO
Arianna VALSECCHI
Marco GEROSA
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Ratti SpA Benefit Soc
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Ratti SpA Benefit Soc
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    • 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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/395—Isocyanates
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties

Definitions

  • the present invention relates to a method for waterproofing fabric products, in particular garments, in particular for restoring the water-repellent functionality of used garments.
  • Waterproofed garments are widely known and used. However, the water-repellent functionality degrades due to the number of washes to which the garment is subjected, exposure to atmospheric agents and use.
  • Products are available on the market which, applied to the used garment in a spraying mode or in a domestic washing machine, restore the water-repellent functionality.
  • the known household methods give a water-repellency of poor duration over time, expose the user in the domestic environment to potentially harmful effluents, and if carried out in a washing machine, include an excessive consumption of water.
  • WO 2016/061099 A1 discloses a method for giving water-repellant properties to textile products comprising the steps of the preamble of claim 1.
  • the present invention relates to a method for giving water-repellent properties to textile products according to the invention and comprises the following operating steps:
  • figure 1 depicts a diagrammatic view of a plant for carrying out the method according to the invention
  • the method for giving water-repellent properties to textile products according to the invention comprises the following operating steps:
  • textile products means in particular items of clothing, such as raincoats, coats, down jackets, anoraks, capes, hats, caps, shawls, duster coats, jackets, pants, padded or unpadded vests, etc.
  • textile products further includes blankets, sleeping bags, tents, curtains, and any other used fabric products which require a waterproofing treatment.
  • giving water-repellent properties means both a first waterproofing on a new or used product which has not been previously waterproofed, and a restoration of the waterproofing properties which may have faded following prolonged use or washing.
  • Figure 1 diagrammatically shows a plant 1 for carrying out the method of the invention.
  • Step B) of washing is especially important in the case of used items as, in order to obtain a good water-repellent effect on a fabric, it is essential to eliminate the substances from the fabric which could interfere with the waterproofing treatment.
  • the interfering substances resulting from daily use can be:
  • the washing step B) can be carried out in an oval machine 2, for example an AOM-C WOOL machine from FLAINOX.
  • an oval machine for example an AOM-C WOOL machine from FLAINOX.
  • Such an apparatus operates discontinuously and consists of an oval stainless steel container into which the textile products to be treated are manually loaded.
  • the movement of the bath is imparted by four stainless steel blades which rotate inside the oval container, on a horizontal shaft driven by an electric motor, with the aim of circulating the bath and the textile products to be treated in the same direction.
  • the bath temperature can be increased by indirect heating, obtained with heat exchange through the passage of steam inside a coil placed on the bottom of the oval container.
  • the bath temperature can also be decreased by passing cold water inside the heat exchanger.
  • the washing step B) preferably comprises the following steps:
  • Step b1) is preferably carried out with an aqueous mixture of fatty acid starches and dispersants.
  • An example is the commercial product Tanaterge EF from the company New Tanatex S.p.A.
  • Tanaterge EF from the company New Tanatex S.p.A.
  • Such a detergent features excellent emulsifying power towards oils and paraffins, excellent suspending power for the removed impurities, a good soaping effect, good biodegradability, is low foaming and has low wetting power.
  • the concentration of detergent in water is preferably between 1 g and 3 g per liter of water.
  • Step b3) is preferably carried out with a condensation product of aromatic sulfonic acids and formaldehyde comprising sodium naphthalene sulfonate.
  • a condensation product of aromatic sulfonic acids and formaldehyde comprising sodium naphthalene sulfonate is the commercial product Erional RF from the company Huntsman, which comprises synthetic tannin and has a strong dispersing power so as to solubilize and extract the surfactants blocked inside the fibers.
  • the concentration of extracting agent in water is preferably between 1 g and 3 g of extracting agent per L of water.
  • step b3) it is important that the pH of the bath is about 5.
  • 80% acetic acid can be used as an acidifying agent.
  • Steps b2), b4) and b5) of rinsing are carried out with water.
  • the third rinsing step b5) is optional and will be carried out for example if the weight of the textile products being processed is high.
  • step B) includes:
  • washing step B) can also be carried out in a site other than that in which the remaining steps of the method are carried out.
  • the washing step B) can be carried out in specialized laundries, for example industrial laundries.
  • Step C) of drying preferably comprises the following steps:
  • step c1) can be carried out in a centrifuge 3 for fabrics, for example an ESH.CC hydroextractor from the company Pozzi Leopoldo s.r.l.
  • the hydroextractor is a machine for discontinuous processing, consisting of a stainless steel body provided with an openable upper lid, inside which a perforated basket is inserted which rotates on a vertical axis driven by an electric motor.
  • the spinning speed in step c1) is no higher than 500 rpm.
  • step c2) can be carried out in a dryer 4 for fabrics, for example a dryer D 110 from the company Renzacci S.p.A.
  • the dryer or tumbler is a machine for discontinuous processing, consisting of a closed and heated metal body, in which a perforated metal basket is inserted which rotates on a horizontal axis driven by an electric motor.
  • the internal heating of the machine is obtained by a heat exchanger, inside which steam circulates.
  • the drying temperature in step c2) is preferably not more than 40°C.
  • Step D) of waterproofing is carried out using a waterproofing composition comprising or consisting of:
  • the waterproofing composition preferably comprises or consists of:
  • the waterproofing composition consists of:
  • Nanopool ® Fibre Protect is marketed by APC Italia s.r.l. Silicon oxide simultaneously gives the fabric hydrophobicity and oleophobicity, is safe for both humans and the environment and can be used on practically all fabrics with natural fibers, but when used alone, it shows poor resistance to maintaining the performance thereof on synthetic fibers, especially polyamides.
  • the waterproofing composition of the present invention solves such a technical problem by virtue of the components ii) and iii) described above, which give rise to a low temperature cross-linking, compatible with the treatment of the used textile products according to the invention.
  • the product Ruco-Dry ® DHY is marketed by the company Rudolf Group.
  • Arkophob ® XLR is marketed by the company Archroma.
  • the amount of waterproofing composition used in step C) is preferably 70-90% by weight, more preferably about 80% by weight, with respect to the weight of the dry textile products.
  • the application of the waterproofing composition is preferably carried out by spraying and can be done with the following methods:
  • the application of the waterproofing composition on the washed and dried textile products is carried out by means of a spraying machine 5 for discontinuous processing, consisting of a closed chamber where the waterproofing product is sprayed.
  • the chamber consists of a closed metal body inside which a perforated drum is placed, rotating on a horizontal axis driven by an electric motor, with a spray nebulization system installed on the closing door and powered by a dedicated external system.
  • the machine can be set, creating customized cycles, by means of a special PLC installed on the machine itself.
  • the basket can contain up to a maximum of 4 kg of dry fabric/garments, but a maximum load of 3 kg is used in the method according to the invention, so that the distribution of the waterproofing product is carried out uniformly on the textile products being processed.
  • a spray machine useable for the present invention is the model G1 35 HD/HW with Core system from the company Tonello s.r.l.
  • step C) includes the following operating parameters:
  • Step E) of drying the waterproofed textile products is carried out by hanging the waterproofed and wet textile product and allowing it to dry in a heated and ventilated place, for example in a forced air circulation oven or, with reference to figure 1 , in a heated chamber 6.
  • the drying has the purpose of "wilting" the waterproofing resin before the cross-linking step, with the purpose of preserving it from the friction imparted by the machine used for the subsequent cross-linking, which otherwise could partially remove it.
  • Step F) of heat-treating the waterproofed and dried textile products comprises treating said textile products at a temperature between 40°C and 80°C and for a time between 15 and 40 minutes.
  • the selection of the temperature/time combination will be made based on the different features of the textile products and in particular of the resistance thereof to heat treatment, as reported on the textile product label or tag. For example, the most delicate textile products will undergo a treatment at no more than 45°C for a longer time, for example 35 minutes. Conversely, the most resistant textile products will undergo a treatment at 60°C or even up to 80°C, but for shorter times, for example about 15 minutes.
  • the heat treatment allows the cross-linking of the aminated dendrimers with the poly-isocyanates, so as to form a protective resin on the treated fabric.
  • step C) is carried out using a dryer 7 (or tumbler), for example the dryer model Essicat SW 50 from the company Renzacci S.p.A.
  • a dryer 7 or tumbler
  • Such a machine is configured for discontinuous processing, and consists of a closed and heated metal body, in which a perforated metal basket is inserted which rotates on a horizontal axis driven by an electric motor. The internal heating of the machine is obtained by a heat exchanger, inside which steam circulates.
  • Tests were carried out on the same garment (ski suit) with an initial spray test of 0, comparing the treatment according to the method of the invention with the main products (consumers) on the market for domestic use (TX direct spray Nikwax on, TX direct wash Nikwax, Organotex Wash In and Grangers Performance Repel Plus).
  • a ski suit was instead subjected to the method of the invention for comparison.
  • the samples thus obtained were evaluated by spray test, according to the standard ISO 4920:2013, i.e., by spraying 250 ml of distilled or completely deionized water on the sample to be tested which must be fixed on a circle and placed at an angle of 45° so that the center of the sample is 150 mm from the center of the spray nozzle surface.
  • the spray test level is determined by visually comparing the sample with photographic or descriptive standards.
  • the classification according to the spray test can be defined as follows: 0 Complete wetting of the entire sample surface 50 Complete wetting of the entire sample surface beyond the spray points 70 Partial wetting of the sample surface beyond the spray points 80 Wetting of the sample surface at the spray points 90 Light and random wetting of the sample surface 100 No wetting
  • the tests carried out not only show a better waterproofing effect at time 0 (i.e., immediately after the application of the method of the invention), but above all a greater persistence of the effect (increased resistance to washing).
  • the waterproofing step is carried out without the use of water, while for two of the domestic products tested (Organotex and Nikwax Wash On) the waterproofing application is carried out during a washing cycle in the washing machine with consequent water consumption (average water consumption: 40-50 liters per cycle).
  • the product for domestic use with spray application (Nikwax spray) instead does not require the use of water from the washing cycle in the washing machine, but includes the exposure of the user to the possible vapors deriving from the spray itself. Furthermore, the spray application does not allow to have a precise control of the amount of product used.
  • the waterproofing according to the method of the invention occurs in a closed environment, without exposure of the worker to possible vapors, and with a precise dosage of the waterproofing composition.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Details Of Garments (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Outer Garments And Coats (AREA)

Claims (10)

  1. Verfahren zum Verleihen von wasserabweisenden Eigenschaften an Textilprodukte, umfassend die folgenden Arbeitsschritte:
    A) Bereitstellen von neuen oder gebrauchten Textilprodukten;
    B) Waschen der Textilprodukte;
    C) Trocknen der gewaschenen Textilprodukte;
    D) Wasserabdichten der getrockneten Textilprodukte;
    E) Trocknen der wasserabgedichteten Textilprodukte;
    F) Wärmebehandlung der wasserabgedichteten und getrockneten Textilprodukte,
    dadurch gekennzeichnet, dass der Wasserabdichtungsschritt D), vorzugsweise durch Sprühen, unter Verwendung einer Wasserabdichtungs-Zusammensetzung durchgeführt wird, die Folgendes umfasst oder daraus besteht:
    i) eine Suspension oder Nanosuspension von Siliziumdioxid;
    ii) Kohlenwasserstoff-Dendrimere oder aminierte Kohlenwasserstoff-Dendrimere in einer Kohlenwasserstoffmatrix;
    iii) polyfunktionelles Isocyanatpolymer, das Hexamethylendiisocyanat enthält.
  2. Verfahren nach Anspruch 1, wobei der Waschschritt B) die folgenden Schritte umfasst:
    b1) Waschen der Textilprodukte mit einem Detergens auf der Basis einer wässrigen Mischung aus Fettsäurestärken und Dispergiermitteln
    b2) erste Spülung
    b3) Waschen mit einem Tensid-Extraktionsmittel auf der Basis eines Kondensationsprodukts von aromatischen Sulfonsäuren und Formaldehyd, das Natriumnaphthalinsulfonat umfasst
    b4) zweite Spülung
    b5) gegebenenfalls dritte Spülung.
  3. Verfahren nach Anspruch 2, wobei das Detergens auf Basis einer wässrigen Mischung aus Fettsäurestärken und Dispergiermitteln in einer Menge zwischen 1 g und 3 g pro Liter Wasser verwendet wird.
  4. Verfahren nach Anspruch 2 oder 3, wobei das Tensid-Extraktionsmittel in einer Menge zwischen 1 g und 3 g pro Liter Wasser verwendet wird, vorzugsweise bei einem pH-Wert von etwa 5.
  5. Verfahren nach Anspruch 4, wobei Schritt B) beinhaltet:
    i) Wiegen der trockenen Textilprodukte
    ii) Befüllen der Maschine mit einer Menge an enthärtetem Wasser in einem Verhältnis von 40 : 1 zum Gewicht des trockenen Textilprodukts
    iii) Zugeben einer Menge von 2 g Detergens, vorzugsweise Tanaterge EF, für jeden L des Bades
    iv) Betätigen des Badbewegungsflügels, um das Waschbad umzuwälzen und zu homogenisieren
    v) Zugeben der Textilprodukte, vorzugsweise eines nach dem anderen, so dass sie gleichmäßig im Tank verteilt werden
    vi) Heizen des Bades auf eine Temperatur von 30-40°C, z.B. in Abhängigkeit von der Pflegekennzeichnung der Textilprodukte
    vii) nach Erreichen der Behandlungstemperatur Umwälzen des Bades und der Textilprodukte für etwa 20 Minuten
    viii) nach dieser Zeit Ablassen des Bades, wobei die Textilprodukte darin verbleiben
    ix) Spülen der gewaschenen Textilprodukte durch Befüllen der Maschine mit unbehandeltem Wasser in einem Verhältnis von 40 : 1 zum Gewicht der trockenen Textilprodukte, bei Raumtemperatur und für eine Verweildauer von etwa 10 Minuten
    x) Entnehmen der Textilprodukte aus dem Tank
    xi) Ablassen des Bades
    xii) Befüllen der Maschine mit einer Menge enthärteten Wassers in einem Verhältnis von 40 : 1 zum Gewicht der trockenen Textilprodukte
    xiii) Zugeben einer Menge von 2 g Tensid-Extraktionsmittel, vorzugsweise Erional RF, das im Verhältnis 1 : 1 mit kaltem, enthärtetem Wasser vorverdünnt ist, für jeden L Bad
    xiv) Kontrolle des pH-Wertes des Bades, z.B. mit einem Lackmuspapier
    xv) falls erforderlich, Einstellen des Bades auf einen pH-Wert von ~ 5 durch Zugabe einer entsprechenden Menge 80%iger Essigsäure
    xvi) Einbringen der in Schritt 10 entnommenen nassen Textilprodukte in den Tank
    xvii) Erhöhen der Temperatur auf nicht mehr als 40°C
    xviii) Wenden der Textilprodukte im Bad bei dieser Temperatur für etwa 30 Minuten
    xix) Ablassen des Bades
    xx) Befüllen der Maschine mit einer Menge an unbehandelten Wassers in einem Verhältnis von 40 : 1 zum Gewicht der trockenen Textilprodukte
    xxi) Kaltbehandlung der Textilprodukte für etwa 10 Minuten
    xxii) je nach Art der verarbeiteten Textilprodukte Prüfen, ob eine weitere Spülung erforderlich ist
    xxiii) Entnehmen der Textilprodukte aus dem Tank und Platzierung auf speziellen Wagen.
  6. Verfahren nach einem der Ansprüche 1 bis 5, wobei der Trocknungsschritt C) die folgenden Schritte umfasst:
    c1) Spinnen der gemäß Schritt B) gewaschenen Textilprodukte
    c2) Trocknen der gesponnenen Textilprodukte.
  7. Verfahren nach Anspruch 6, wobei:
    - in Schritt c1) die Spinngeschwindigkeit nicht höher als 500 U/min ist, und/oder
    - in Schritt c2) die Trocknungstemperatur nicht höher als 40°C ist.
  8. Verfahren nach Anspruch 1, wobei die wasserabdichtende Zusammensetzung umfasst oder besteht aus:
    - 75-85 Gew.-% Siliciumdioxid-Suspension oder -Nanosuspension
    - 14-23 Gew.-% Kohlenwasserstoff-Dendrimere oder aminierte Kohlenwasserstoff-Dendrimere in einer Kohlenwasserstoffmatrix
    - 0,5-3 Gew.-% einer polyfunktionellen Isocyanat-Polymerlösung, die Hexamethylendiisocyanat enthält.
  9. Verfahren nach einem der Ansprüche 1 bis 8, wobei die Menge der in Schritt C) verwendeten wasserabdichtenden Zusammensetzung 70-90 Gew.-% oder etwa 80 Gew.-% beträgt, bezogen auf das Gewicht der trockenen Textilprodukte.
  10. Verfahren nach einem der Ansprüche 1 bis 9, wobei der Schritt F) der Wärmebehandlung der wasserabgedichteten und getrockneten Textilprodukte die Behandlung der Textilprodukte bei einer Temperatur zwischen 40°C und 80°C und für eine Zeit zwischen 15 und 40 Minuten umfasst.
EP21201022.7A 2020-11-04 2021-10-05 Verfahren zum hydrophobieren von kleidungsstücken Active EP3995625B1 (de)

Applications Claiming Priority (1)

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IT102020000026272A IT202000026272A1 (it) 2020-11-04 2020-11-04 Procedimento per la impermeabilizzazione di capi manufatti in tessuto

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EP3995625A1 EP3995625A1 (de) 2022-05-11
EP3995625B1 true EP3995625B1 (de) 2024-04-03
EP3995625C0 EP3995625C0 (de) 2024-04-03

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4376989B2 (ja) * 1998-12-22 2009-12-02 東レ・ダウコーニング株式会社 固体材料用撥水処理剤
US20160108577A1 (en) * 2014-10-17 2016-04-21 Barley & Britches, Inc. Water-repellent fabrics

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