EP0816556A1 - Process for treating knitted products to make them water-repellent and stain-resistant - Google Patents

Process for treating knitted products to make them water-repellent and stain-resistant Download PDF

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Publication number
EP0816556A1
EP0816556A1 EP97420074A EP97420074A EP0816556A1 EP 0816556 A1 EP0816556 A1 EP 0816556A1 EP 97420074 A EP97420074 A EP 97420074A EP 97420074 A EP97420074 A EP 97420074A EP 0816556 A1 EP0816556 A1 EP 0816556A1
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EP
European Patent Office
Prior art keywords
knitted
mesh
product
subjecting
bath
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP97420074A
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German (de)
French (fr)
Inventor
André Vernay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VERNAY GROUPE
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Financiere Vernay Sa Ste
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Filing date
Publication date
Application filed by Financiere Vernay Sa Ste filed Critical Financiere Vernay Sa Ste
Publication of EP0816556A1 publication Critical patent/EP0816556A1/en
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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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • 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
    • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
    • 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
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • 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
    • D06M15/70—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment combined with mechanical treatment

Definitions

  • the invention relates to the technical sector of knitting on rectilinear loom, for making clothes, of the pullover type and others.
  • the garment and more generally the mesh knitted can be subjected to additional treatments, to give it a specific visual appearance.
  • the mesh can be scraped to obtain a fabric with a velvety appearance.
  • the problem that we propose to solve the invention is to produce an article which is waterproof, anti-stain, while facilitating the circulation of air.
  • the fluorinated resin of TEFLON type is applied to the scarf by subjecting the knitted mesh in a bath of 50 g / l of oleophobol-S and 20 g / l of alcohol isopropyl, the pH adjustment of the bath being brought to 5 with 0.5 g acetic acid.
  • the take-up rate is set at around 80%.
  • Another problem which the invention proposes to solve is to submit the article obtained according to the process of the invention to one or more operations capable of giving it the appearance of a velvety fabric.
  • the fibers of the mesh to an elongation and de-stemming operation, then to a velvety and shaving operation.
  • Figures 1, 2, 3 and 4 are views of a purely character schematic of the treatment method according to the invention.
  • the treatment method according to the invention intervenes after knitting the mesh on a rectilinear loom.
  • the knitted mesh (M) is washed, in particular on an OVER-FLOW type machine. This washing is carried out in the middle alkaline with dispersing detergents to remove mesh, oils and other impurities resulting, for example, from the working of needles and needle beds.
  • the mesh is then rinsed and subjected to a treatment of the type ERONIAL, consisting of an electrolyte bath to facilitate attachment of the fluorinated resin on the knitted mesh, as will be indicated below from the description.
  • This eronal treatment makes it possible to obtain charges negative on the surface of the knitted mesh, thereby attracting positive charges presented by the fluorinated resin.
  • the knitted mesh thus washed, rinsed and treated, is then subjected to a wringing operation, using a wringer of all known and appropriate type.
  • the knitted mesh thus set is then subjected to a drying operation using a relaxing mat (T) ( Figure 3).
  • T a relaxing mat
  • This drying takes place at a temperature of around 145 ° C and at a speed about 10 m / min. Then just apply the fluoride resin in the conditions indicated below.
  • This resin is applied to the scarf, subjecting the knitted mesh in a bath of 50g / l of oleophobol-s and 20g / l of alcohol isopropyl.
  • the pH of the resin bath is adjusted to 5 with 0.5 g of acid acetic.
  • the take-up rate is set at around 80% by means of example, of two pressure rollers (P) (figure 4).
  • the take-up rate is the ratio of difference between the wet mass and the dry mass, on the wet mass. In other words, for an 80% take-up rate, 800 g of bath are taken resin for 1kg of fabric.
  • the fibers of the mesh thus treated can be subjected to an elongation and riddling operation, then a velvety and shaving operation.
  • the whole knitted and treated mesh according to the characteristics of the invention can be subjected to any of the characteristic steps, such as defined in patent application WO 9418368 of which the applicant for the present also holds.

Abstract

Method for treatment of article, knitted on straight machine, in order to obtain stitched product e.g. pullover which is impermeable and stain-resistant, comprises, after knitting, washing and rinsing article and subjecting to "ERIONAL" treatment; spin-drying stitched; unlooping and forming large pleats, drying, applying fluorinated resin of "TEFLON" type, drying, and polymerising. Also claimed is a knitted article subjected to treatment.

Description

L'invention se rattache au secteur technique du tricotage sur métier rectiligne, pour la réalisation de vêtements, du type pull-over et autres.The invention relates to the technical sector of knitting on rectilinear loom, for making clothes, of the pullover type and others.

Il est notoirement connu de réaliser sur des métiers rectilignes, le tricotage de mailles entrelacées au moyen d'aiguilles spéciales pour réaliser des pulls-over ou autres vêtements.It is well known to carry out on rectilinear trades, knitting of interwoven stitches using special needles to make sweaters or other clothing.

Après tricotage, le vêtement et plus généralement la maille tricotée, peut être soumise à des traitements complémentaires, pour lui conférer un aspect visuel spécifique. Par exemple, la maille peut être grattée pour obtenir un tissu ayant un aspect velouteux.After knitting, the garment and more generally the mesh knitted, can be subjected to additional treatments, to give it a specific visual appearance. For example, the mesh can be scraped to obtain a fabric with a velvety appearance.

A partir d'une technique de tricotage parfaitement connue sur un métier rectiligne, le problème que se propose de résoudre l'invention, est de réaliser un article qui soit imperméable, anti-tâches, tout en facilitant la circulation de l'air.From a knitting technique perfectly known on a rectilinear profession, the problem that we propose to solve the invention is to produce an article which is waterproof, anti-stain, while facilitating the circulation of air.

Pour résoudre ce problème, il est apparu important de pouvoir soumettre la maille tricotée à un bain d'une résine fluorée, notamment du type de celle connue sous la marque Téflon®. Cette incorporation d'une résine fluorée a nécessité la mise au point d'un procédé spécifique comportant plusieurs étapes qui interviennent après tricotage de la maille.To solve this problem, it appeared important to be able to subjecting the knitted mesh to a bath of a fluorinated resin, in particular of the type of that known under the brand Teflon®. This incorporation of a fluorinated resin required the development of a specific process with several steps involved after knitting the stitch.

Dans ce but, selon l'invention, il a été conçu et mis au point un procédé de fabrication d'un produit tricoté sur métier rectiligne, remarquable en ce que après tricotage :

  • on lave et on rince le produit en le soumettant à un traitement de type ERONIAL
  • on essore la maille tricotée
  • on réalise un dévrillage et une mise au large en plis
  • on sèche
  • on applique une résine fluorée du type TEFLON®
  • on sèche
  • on polymérise.
For this purpose, according to the invention, a method has been devised and developed for manufacturing a knitted product on a straight loom, remarkable in that after knitting:
  • the product is washed and rinsed by subjecting it to an ERONIAL type treatment
  • we spin the knitted mesh
  • we realize a twisting and setting off in folds
  • we dry
  • applying a TEFLON® fluorine resin
  • we dry
  • we polymerize.

Pour résoudre le problème posé d'assurer la fixation du "TEFLON"®, sur la maille à tricoter, on lave le produit dans un milieu alcalin avec détergent dispersant puis, après rinçage, on soumet ledit produit à un bain électrolyte pour faciliter la fixation de la résine fluorée sur la maille tricotée.To resolve the problem posed of securing the "TEFLON" ®, on the knitting stitch, we wash the product in a alkaline medium with dispersing detergent then, after rinsing, subject said product to an electrolyte bath to facilitate the fixing of the resin fluorinated on knitted mesh.

Pour résoudre le problème posé d'appliquer la résine fluorée du type TEFLON, cette dernière est appliquée au foulard en soumettant la maille tricotée à un bain de 50 g/l d'oléophobol-S et de 20 g/l d'alcool iso-propylique, le réglage du pH du bain étant porté à 5 avec 0,5 g d'acide acétique. On règle le taux d'emport à environ 80 %.To solve the problem of applying the fluorinated resin of TEFLON type, the latter is applied to the scarf by subjecting the knitted mesh in a bath of 50 g / l of oleophobol-S and 20 g / l of alcohol isopropyl, the pH adjustment of the bath being brought to 5 with 0.5 g acetic acid. The take-up rate is set at around 80%.

Un autre problème que se propose de résoudre l'invention, est de soumettre l'article obtenu selon le procédé de l'invention à une ou des opérations aptes à lui conférer l'aspect d'un tissu velouteux.Another problem which the invention proposes to solve is to submit the article obtained according to the process of the invention to one or more operations capable of giving it the appearance of a velvety fabric.

Pour résoudre un tel problème, on soumet les fibres de la maille à une opération d'allongement et d'ébourriffage, puis à une opération de veloutage et de rasage.To solve such a problem, the fibers of the mesh to an elongation and de-stemming operation, then to a velvety and shaving operation.

L'invention est exposée, ci-après plus en détail à l'aide des dessins annexés, dans lesquels :The invention is explained below in more detail using the annexed drawings, in which:

Les figures 1, 2, 3 et 4 sont des vues à caractère purement schématique du procédé de traitement selon l'invention. Figures 1, 2, 3 and 4 are views of a purely character schematic of the treatment method according to the invention.

Comme indiqué, le procédé de traitement selon l'invention intervient après tricotage de la maille sur un métier rectiligne.As indicated, the treatment method according to the invention intervenes after knitting the mesh on a rectilinear loom.

L'opération de tricotage en tant que telle n'est pas décrite étant donné qu'elle est parfaitement connue pour un homme du métier et qu'elle ne fait pas partie de l'objet spécifique de l'invention.The knitting operation as such is not described since it is perfectly known to a person skilled in the art and that it is not part of the specific object of the invention.

Après tricotage, la maille tricotée (M) est lavée, notamment sur une machine du type OVER-FLOW. Ce lavage est effectué en milieu alcalin avec détergents dispersants pour enlever de la maille, les huiles et autres impuretés résultant par exemple, du travail des aiguilles et des fontures. La maille est ensuite rincée et soumise à un traitement du type ERONIAL, constitué par un bain électrolyte pour faciliter la fixation de la résine fluorée sur la maille tricotée, comme il sera indiqué dans la suite de la description. Ce traitement éronial permet d'obtenir des charges négatives à la surface de la maille tricotée, permettant ainsi d'attirer les charges positives que présente la résine fluorée.After knitting, the knitted mesh (M) is washed, in particular on an OVER-FLOW type machine. This washing is carried out in the middle alkaline with dispersing detergents to remove mesh, oils and other impurities resulting, for example, from the working of needles and needle beds. The mesh is then rinsed and subjected to a treatment of the type ERONIAL, consisting of an electrolyte bath to facilitate attachment of the fluorinated resin on the knitted mesh, as will be indicated below from the description. This eronal treatment makes it possible to obtain charges negative on the surface of the knitted mesh, thereby attracting positive charges presented by the fluorinated resin.

La maille tricotée ainsi lavée, rincée et traitée, est ensuite soumise à une opération d'essorage, au moyen d'une essoreuse de tout type connu et approprié.The knitted mesh thus washed, rinsed and treated, is then subjected to a wringing operation, using a wringer of all known and appropriate type.

A ce stade, la maille n'est pas ordonnée et se trouve entassée. Il convient donc de la soumettre à un dévrillage et à une mise au large en formant une pluralité de plis superposés (figure 2).At this stage, the mesh is not ordered and is piled up. It is therefore advisable to subject it to a twisting and setting off by forming a plurality of superimposed folds (Figure 2).

La maille tricotée ainsi mise en plis, est alors soumise à une opération de séchage au moyen d'un tapis relaxant (T) (figure 3). Ce séchage s'effectue à une température d'environ 145°C et à une vitesse d'environ 10 m/mn. Il suffit ensuite d'appliquer la résine fluorée dans les conditions indiquées ci-après. The knitted mesh thus set, is then subjected to a drying operation using a relaxing mat (T) (Figure 3). This drying takes place at a temperature of around 145 ° C and at a speed about 10 m / min. Then just apply the fluoride resin in the conditions indicated below.

Cette résine est appliquée au foulard, en soumettant la maille tricotée à un bain de 50g/l d'oléophobol-s et de 20g/l d'alcool isopropylique. Le PH du bain de résine est réglé à 5 avec 0,5 g d'acide acétique. Le taux d'emport est réglé à environ 80 % au moyen par exemple, de deux rouleaux presseurs (P) (figure 4).This resin is applied to the scarf, subjecting the knitted mesh in a bath of 50g / l of oleophobol-s and 20g / l of alcohol isopropyl. The pH of the resin bath is adjusted to 5 with 0.5 g of acid acetic. The take-up rate is set at around 80% by means of example, of two pressure rollers (P) (figure 4).

On rappelle que le taux d'emport est le rapport de la différence entre la masse humide et la masse sèche, sur la masse humide. Autrement dit, pour un taux d'emport de 80 %, on prélève 800 g de bain de résine pour 1kg de tissu.Remember that the take-up rate is the ratio of difference between the wet mass and the dry mass, on the wet mass. In other words, for an 80% take-up rate, 800 g of bath are taken resin for 1kg of fabric.

La maille tricotée ainsi traitée avec la résine est ensuite de nouveau soumise à l'action d'un séchoir relaxant, comme illustré figure 3.The knitted mesh thus treated with the resin is then again subjected to the action of a relaxing dryer, as illustrated in figure 3.

Enfin, la maille est soumise à une opération de polymérisation. On renvoie à la figure 3.Finally, the mesh is subjected to an operation of polymerization. We refer to Figure 3.

Avantageusement, les fibres de la maille ainsi traitée, peuvent être soumise à un opération d'allongement et d'ébouriffage, puis à une opération de veloutage et de rasage. Notamment, l'ensemble de la maille tricotée et traitée selon les caractéristiques de l'invention, peut être soumis à l'une quelconque des étapes caractéristiques, telles que définies dans la demande de brevet WO 9418368 dont le demandeur de la présente est également titulaire.Advantageously, the fibers of the mesh thus treated, can be subjected to an elongation and riddling operation, then a velvety and shaving operation. In particular, the whole knitted and treated mesh according to the characteristics of the invention, can be subjected to any of the characteristic steps, such as defined in patent application WO 9418368 of which the applicant for the present also holds.

Les avantages ressortent bien de la description, en particulier on souligne et on rappelle les qualités de l'article obtenu, à savoir : l'imperméabilité et l'anti-tâches.The advantages are apparent from the description, in particular the qualities of the article obtained are emphasized and recalled, namely: impermeability and anti-stain.

Claims (7)

Procédé de traitement d'un produit tricoté sur métier rectiligne pour obtenir un article en mailles notamment du type pull-over qui soit imperméable et anti-tâches, caractérisé en ce que après tricotage : on lave et on rince le produit en le soumettant à un traitement de type ERONIAL on essore la maille tricotée on réalise un dévrillage et une mise au large en plis on sèche on applique une résine fluorée du type TEFLON® on sèche on polymérise. Process for treating a knitted product on a rectilinear loom to obtain a knitted article, in particular of the pullover type which is waterproof and anti-stain, characterized in that after knitting: the product is washed and rinsed by subjecting it to an ERONIAL type treatment we spin the knitted mesh we realize a twisting and setting off in folds we dry applying a TEFLON® fluorine resin we dry we polymerize. Procédé selon la revendication 1, caractérisé en ce qu'on lave le produit dans un milieu alcalin avec détergent dispersant, puis après rinçage, on soumet ledit produit à un bain électrolyte pour faciliter la fixation de la résine fluorée sur la maille tricotée.Method according to claim 1, characterized in that washing the product in an alkaline medium with dispersing detergent, then after rinsing, subjecting said product to an electrolyte bath to facilitate fixation of the fluorinated resin on the knitted mesh. Procédé selon la revendication 1, caractérisé en ce qu'on sèche la maille sur un séchoir à tapis relaxant à une température d'environ 145°C et à une vitesse d'environ 10 m/mn.Method according to claim 1, characterized in that dries the mesh on a relaxing carpet dryer at a temperature about 145 ° C and at a speed of about 10 m / min. Procédé selon la revendication 1, caractérisé en ce qu'on applique la résine fluorée au foulard en soumettant la maille tricotée à un bain de 50 g/l d'oléophobol-S et de 20 g/l d'alcool iso-propylique, le réglage du pH du bain étant porté à 5 avec 0,5 g d'acide acétique.Method according to claim 1, characterized in that apply the fluoride resin to the scarf by subjecting the knitted mesh to a bath of 50 g / l of oleophobol-S and 20 g / l of isopropyl alcohol, the adjusting the pH of the bath being brought to 5 with 0.5 g of acetic acid. Procédé selon la revendication 1, caractérisé en ce qu'on règle le taux d'emport à environ 80 %.Method according to claim 1, characterized in that one adjusts the take-up rate at around 80%. Procédé selon la revendication 1, caractérisé en ce qu'on soumet les fibres de la maille à une opération d'allongement et d'ébourriffage, puis à une opération de veloutage et de rasage.Method according to claim 1, characterized in that subjects the fibers of the mesh to an elongation operation and and then to a velvety and shaving operation. Article tricoté obtenu selon l'une quelconque des revendications 1 à 6.Knitted article obtained according to any one of claims 1 to 6.
EP97420074A 1996-05-21 1997-05-20 Process for treating knitted products to make them water-repellent and stain-resistant Withdrawn EP0816556A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9606535 1996-05-21
FR9606535A FR2749028B1 (en) 1996-05-21 1996-05-21 PROCESS FOR TREATING A KNITTED PRODUCT ON A STRETCHED MATERIAL SO THAT IT IS WATERPROOF AND STAIN-RESISTANT

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EP0816556A1 true EP0816556A1 (en) 1998-01-07

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EP97420074A Withdrawn EP0816556A1 (en) 1996-05-21 1997-05-20 Process for treating knitted products to make them water-repellent and stain-resistant

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FR (1) FR2749028B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876131A (en) * 1954-11-23 1959-03-03 Du Pont Coating of fibrous structrues with tetrafluoroethylene polymer
EP0320257A2 (en) * 1987-12-09 1989-06-14 Pall Corporation Compositions for use with fabrics
WO1992010532A1 (en) * 1990-12-07 1992-06-25 Vascutek Limited Fluorinating polymer surfaces
WO1994018368A1 (en) * 1993-02-02 1994-08-18 A. Vernay Et Fils Sarl Method for producing a 'polar' fabric, and resulting fabric

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876131A (en) * 1954-11-23 1959-03-03 Du Pont Coating of fibrous structrues with tetrafluoroethylene polymer
EP0320257A2 (en) * 1987-12-09 1989-06-14 Pall Corporation Compositions for use with fabrics
WO1992010532A1 (en) * 1990-12-07 1992-06-25 Vascutek Limited Fluorinating polymer surfaces
WO1994018368A1 (en) * 1993-02-02 1994-08-18 A. Vernay Et Fils Sarl Method for producing a 'polar' fabric, and resulting fabric

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Protection Teflon de Du Pont-Ciba", INDUSTRIE TEXTILE, no. 1250, 1 January 1994 (1994-01-01), pages 31, XP000436502 *
DR. DIETER LÄMMERMANN: "Moderne Fleckschutzausrüstung von Textilien", MELLIAND TEXTILBERICHTE, vol. 74, no. 9, September 1993 (1993-09-01), HEIDELBERG DE, pages 883 - 889, XP000394776 *
PETER M. & ROUETTE H.K.: "Grundlagen der Textilveredlung (Handbuch der Technologie, Verfahren und Maschinen)", 1989, DEUTSCHER FACHVERLAG, FRANKFURT,DE, XP002027810, 017450 *

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FR2749028B1 (en) 1998-08-21
FR2749028A1 (en) 1997-11-28

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