EP0378479A1 - Enamelled iron sole plate - Google Patents

Enamelled iron sole plate Download PDF

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Publication number
EP0378479A1
EP0378479A1 EP90400076A EP90400076A EP0378479A1 EP 0378479 A1 EP0378479 A1 EP 0378479A1 EP 90400076 A EP90400076 A EP 90400076A EP 90400076 A EP90400076 A EP 90400076A EP 0378479 A1 EP0378479 A1 EP 0378479A1
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EP
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Prior art keywords
sole
enamel
strips
bands
layer
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Granted
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EP90400076A
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German (de)
French (fr)
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EP0378479B1 (en
Inventor
Bruno Maurin
Henri Piera
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SEB SA
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SEB SA
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/38—Sole plates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers

Definitions

  • the present invention relates to an iron soleplate, in particular a steam iron, the surface of which is intended to be applied to the articles to be ironed is coated with enamel.
  • the soles of the irons are made of metal (stainless steel or aluminum) whose surface is polished.
  • metal stainless steel or aluminum
  • Such polished soles are however sensitive to scratches and stains especially when they are made of aluminum.
  • the object of the present invention is to remedy the above drawbacks, by proposing an enameled sole having a markedly improved "glide”, insensitive to stains and inexpensive to manufacture.
  • the surface of the sole intended to be applied to the articles to be ironed has bands of enamel in relief substantially parallel and extending in the longitudinal direction of the sole.
  • the edge of the strips is rounded. This rounding clearly promotes sliding.
  • said enamel strips are applied to an enamel layer.
  • This characteristic makes it possible to obtain an excellent adhesion of the enamel strips, while making the entire surface of the sole insensitive to stains.
  • said enamel strips are applied by screen printing. This technique makes it possible to obtain bands of enamel having a very precise and clear outline, that is to say without burrs likely to reduce the slip of the sole.
  • said enamel strips are produced by vitrification of a composition of enamel particles.
  • This vitrification has the effect of rounding the edges of the strips and glazing the surface thereof, which also promotes sliding.
  • the soleplate of steam iron shown in the figures comprises a metal plate 1, for example of laminated aluminum, pierced with orifices 2 for the passage of steam.
  • This sole intended to come into contact with the articles to be ironed is covered with a continuous layer of enamel 3.
  • This layer of enamel 3 is itself covered with bands of enamel 4 in relief, parallel to each other to others and extending in the longitudinal direction of the sole. These relief bands 4 have a rounded profile in section.
  • the enamel layer 3 is applied by spraying an aqueous composition of vitrifiable enamel particles.
  • the enamel strips 4 are applied by screen printing on the enamel layer 3 from a composition of vitrifiable enamel particles at substantially the same temperature as those of said layer 3. This layer 3 and these strips 4 are fired simultaneously, which makes it possible to obtain excellent adhesion of these strips 4 to the enamel layer 3.
  • the relief enamel strips 4 can have a thickness of between 10 and 100 ⁇ m.
  • the width of the strips 4 can be between a few hundredths of a mm and a few millimeters.
  • the enamel strips 4 preferably have a cross section which gradually decreases from the front to the rear of the sole.
  • the coefficient of friction per unit area between the surface of the soleplate and the articles to be ironed decreases progressively from the front to the rear of the soleplate, which is favorable for obtaining good quality. ironing.
  • the Applicant has observed during tests that it was advantageous for the ratio of the surface of the raised bands 4 to the surface of the sole not covered by the bands to be between 0.5 and 2.5.
  • the wear of the raised bands is reduced to the detriment of that of the enamel layer on which the bands are applied. This faster wear of the enamel layer increases the amplitude of the relief of the bands and reduces slipping.
  • the hardness of the enamel of the relief bands 4 is at least 15% higher than that of the enamel of the underlying layer.
  • the hardness of the underlying enamel layer measured with a Vickers point applied under a force of 0.3 daN is preferably between 470 and 570, while that of the enamel of the relief bands is preferably between 540 and 650.
  • This layer is dried.
  • the two layers of enamel thus obtained are baked simultaneously at a temperature of the order of 550 ° C.
  • This cooking makes the enamel particles vitrify.
  • This sintering has the effect of rounding the edges of the enamel strips 4 and smoothing the surface thereof, removing any sharp angles and any roughness.
  • the enamel bands 4 formed on the surface of the sole significantly reduce the contact surface between the sole and the textiles to be ironed.
  • the "gliding" of the sole is significantly improved, in particular in its longitudinal direction which corresponds to the normal ironing direction.
  • the enamel strips 4 also have the effect of spacing a few tens of microns between the surface of the soleplate, from which the orifices 2 for the passage of steam open, with respect to the surface of the textile articles, which creates channels of diffusion of the vapor distributed on the whole of the sole, which favor the action of this vapor on textiles.
  • Table I below shows the surprising improvement in sliding of a sole according to the invention with regard to other soles.
  • TABLE I Iron reference 1 2 3 4 5 6 7 8 9 Sole coating
  • Weight of empty iron 1.375g 1,380g 1,400g 1.530g 1.130g 1.080g 1.510g 1.090g 1,380g Ironed fabrics Measured tensile force Polyester 309g 352g 331g 431g 346g 217g 456g 353g 232g Oldest boy 244g 192g 270g 324g 171g 203g 302g 385g 115g Polyester-cotton 50/50 300g 189g 228g 349g 179g 204g 338g 303g 129g
  • the iron No. 2 has an enameled sole, as described in French patent No. 2,581,402 of the applicant.
  • Iron No. 9 is equipped with an enameled aluminum soleplate and bearing enameled bands, in accordance with the present invention.
  • the values of the measured tensile force illustrate the sliding ability of the sole.
  • Table II above shows in particular that the sole with raised bands according to the present invention provides in all cases - whatever the ironed textile material, the lowest coefficients of friction.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Irons (AREA)
  • Coating Apparatus (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The iron sole plate has an enamel covering on its surface intended to be laid onto the articles to be ironed. <??>This surface comprises enamel strips (4) in relief which are substantially parallel and which extend in the longitudinal direction of the sole plate. <??>The invention is used for improving the sliding of the iron. <IMAGE>

Description

La présente invention concerne une semelle de fer à repasser, notamment à vapeur, dont la surface destinée à être appliquée sur les articles à repasser est revêtue d'émail.The present invention relates to an iron soleplate, in particular a steam iron, the surface of which is intended to be applied to the articles to be ironed is coated with enamel.

Actuellement, les semelles des fers à repasser sont réalisées en métal (acier inoxydable ou aluminium) dont la surface est polie. On a pensé en effet que le meilleur moyen d'obtenir une bonne qualité de repassage était d'utiliser une semelle à surface la moins rugueuse possible, de façon à obtenir un bon transfert thermique entre la semelle et les articles à repasser, tout en réduisant le coefficient de frottement, ce qui améliore la "glisse" du fer sur les articles.Currently, the soles of the irons are made of metal (stainless steel or aluminum) whose surface is polished. We thought that the best way to obtain good quality ironing was to use a sole with the least rough surface possible, so as to obtain good heat transfer between the sole and the articles to be ironed, while reducing the coefficient of friction, which improves the "sliding" of the iron on the articles.

De telles semelles polies sont cependant sensibles aux rayures et aux taches surtout lorsqu'elles sont en aluminium.Such polished soles are however sensitive to scratches and stains especially when they are made of aluminum.

La demanderesse a éliminé cet inconvénient en proposant des semelles de fer revêtues d'une couche d'émail, comme décrit dans son brevet français 2 581 402.The Applicant has eliminated this drawback by proposing iron soles coated with a layer of enamel, as described in its French patent 2,581,402.

Elle a constaté par ailleurs que cette couche d'émail améliorait de façon surprenante la "glisse" de la semelle du fer, notamment à chaud.It also found that this layer of enamel surprisingly improved the "glide" of the soleplate of the iron, especially when hot.

La demanderesse a poursuivi ses recherches dans le but d'améliorer la qualité du repassage et en particulier la glisse de la semelle des fers à repasser.The applicant continued its research in order to improve the quality of ironing and in particular the sliding of the soleplate of irons.

De nombreuses tentatives ont été effectuées dans cette voie. En particulier, le brevet américain 2 270 316 décrit une semelle de fer à repasser dont la surface comporte une multitude de sillons microscopiques obtenus par abrasion à la toile émeri ou analogue, et s'étendant dans la direction longitudinale de la semelle. La surface ainsi gravée est revêtue d'une fine couche de chrome qui épouse le profil des sillons sous-jacents.Many attempts have been made in this direction. In particular, American patent 2,270,316 describes an iron soleplate whose surface comprises a multitude of microscopic grooves obtained by abrasion with emery cloth or the like, and extending in the longitudinal direction of the soleplate. The engraved surface is coated with a thin layer of chrome which follows the profile of the underlying grooves.

Le brevet précité indique que la semelle ainsi traitée présente une résistance à la friction réduite par rapport à la surface à repasser.The aforementioned patent indicates that the sole thus treated has a reduced resistance to friction compared to the surface to be ironed.

Toutefois, une telle semelle est très coûteuse à réaliser et elle est très sensible aux taches qui sont difficiles à nettoyer, de sorte que l'amélioration de la glisse qu elle permet théoriquement d'obtenir aboutit très rapidement à un résultat inverse.However, such a sole is very expensive to produce and it is very sensitive to stains which are difficult to clean, so that the improvement in gliding which it theoretically allows to obtain very quickly leads to an opposite result.

Le but de la présente invention est de remédier aux inconvénients ci-dessus, en proposant une semelle émaillée présentant une "glisse" nettement améliorée, insensible aux taches et peu coûteuse à fabriquer.The object of the present invention is to remedy the above drawbacks, by proposing an enameled sole having a markedly improved "glide", insensitive to stains and inexpensive to manufacture.

Suivant l'invention, la surface de la semelle destinée à être appliquée sur les articles à repasser comporte des bandes d'émail en relief sensiblement parallèles et s'étendant dans la direction longitudinale de la semelle.According to the invention, the surface of the sole intended to be applied to the articles to be ironed has bands of enamel in relief substantially parallel and extending in the longitudinal direction of the sole.

Ces bandes d'émail en relief permettent de réduire la surface de contact de la semelle avec les textiles à repasser et donc de réduire le coefficient de frottement, notamment dans la direction longitudinale de la semelle, c'est-à-dire dans la direction dans laquelle doit être déplacée la semelle pour obtenir une bonne qualité de repassage.These bands of enamel in relief make it possible to reduce the contact surface of the soleplate with the textiles to be ironed and therefore to reduce the coefficient of friction, in particular in the longitudinal direction of the soleplate, that is to say in the direction in which the soleplate must be moved to obtain a good quality of ironing.

Ces bandes d'émail, contrairement aux micro­sillons gravés dans le métal de la semelle connue, ne rendent pas la semelle sensible aux taches.These enamel bands, unlike the microgrooves engraved in the metal of the known sole, do not make the sole sensitive to stains.

Du fait que ces bandes d'émail n'exigent aucune préparation particulière de la surface de la semelle, elles n'affectent pas le coût de fabrication de celle-ci.Because these enamel strips do not require any special preparation of the surface of the sole, they do not affect the cost of manufacturing it.

De plus, dans le cas d'une semelle à vapeur, ces bandes d'émail en relief favorisent la diffusion de la vapeur entre la semelle et les textiles.In addition, in the case of a steam soleplate, these relief enamel strips promote the diffusion of steam between the soleplate and the textiles.

Selon une version préférée de l'invention, le bord des bandes est arrondi. Cet arrondi favorise nettement la glisse.According to a preferred version of the invention, the edge of the strips is rounded. This rounding clearly promotes sliding.

Selon une version avantageuse de l'invention, lesdites bandes d'émail sont appliquées sur une couche d'émail.According to an advantageous version of the invention, said enamel strips are applied to an enamel layer.

Cette caractéristique permet d'obtenir une excellente adhérence des bandes d'émail, tout en rendant l'ensemble de la surface de la semelle insensible aux taches.This characteristic makes it possible to obtain an excellent adhesion of the enamel strips, while making the entire surface of the sole insensitive to stains.

De préférence, lesdites bandes d'émail sont appliquées par sérigraphie. Cette technique permet d'obtenir des bandes d'émail ayant un tracé très précis et net, c'est-à-dire sans bavures susceptibles de réduire la glisse de la semelle.Preferably, said enamel strips are applied by screen printing. This technique makes it possible to obtain bands of enamel having a very precise and clear outline, that is to say without burrs likely to reduce the slip of the sole.

De préférence également, lesdites bandes d'émail sont réalisées par vitrification d'une composition de particules d'émail.Also preferably, said enamel strips are produced by vitrification of a composition of enamel particles.

Cette vitrification a pour effet d'arrondir les bords des bandes et de glacer la surface de celle-ci, ce qui favorise également la glisse.This vitrification has the effect of rounding the edges of the strips and glazing the surface thereof, which also promotes sliding.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-­après.Other features and advantages of the invention will appear in the description below.

Aux dessins annexés donnés à titre d'exemples non limitatifs :

  • - la figure 1 est une vue en plan de la semelle émaillée conforme à l'invention,
  • - la figure 2 est une vue en coupe à plus grande échelle suivant le plan II-II de la figure 1.
In the appended drawings given by way of nonlimiting examples:
  • FIG. 1 is a plan view of the enamelled soleplate according to the invention,
  • - Figure 2 is a sectional view on a larger scale along the plane II-II of Figure 1.

La semelle de fer à vapeur représentée sur les figures comprend une plaque métallique 1, par exemple en aluminium laminé, percée d'orifices 2 pour le passage de la vapeur.The soleplate of steam iron shown in the figures comprises a metal plate 1, for example of laminated aluminum, pierced with orifices 2 for the passage of steam.

La surface de cette semelle destinée à venir en contact avec les articles à repasser est recouverte d'une couche continue d'émail 3. Cette couche d'émail 3 est elle-­même recouverte de bandes d'émail 4 en relief, parallèles les unes aux autres et s'étendant dans la direction longitudinale de la semelle. Ces bandes en relief 4 présentent en section un profil arrondi.The surface of this sole intended to come into contact with the articles to be ironed is covered with a continuous layer of enamel 3. This layer of enamel 3 is itself covered with bands of enamel 4 in relief, parallel to each other to others and extending in the longitudinal direction of the sole. These relief bands 4 have a rounded profile in section.

De préférence, la couche d'émail 3 est appliquée par pulvérisation d'une composition aqueuse de particules d'émail vitrifiables. Les bandes d'émail 4 sont appliquées par sérigraphie sur la couche d'émail 3 à partir d'une composition de particules d'émail vitrifiables sensiblement à la même température que celles de ladite couche 3. Cette couche 3 et ces bandes 4 sont cuites simultanément, ce qui permet d'obtenir une excellente adhérence de ces bandes 4 à la couche d'émail 3.Preferably, the enamel layer 3 is applied by spraying an aqueous composition of vitrifiable enamel particles. The enamel strips 4 are applied by screen printing on the enamel layer 3 from a composition of vitrifiable enamel particles at substantially the same temperature as those of said layer 3. This layer 3 and these strips 4 are fired simultaneously, which makes it possible to obtain excellent adhesion of these strips 4 to the enamel layer 3.

Les bandes d'émail en relief 4 peuvent présenter une épaisseur comprise entre 10 et 100 µm.The relief enamel strips 4 can have a thickness of between 10 and 100 μm.

La largeur des bandes 4 peut être comprise entre quelques centièmes de mm et quelques millimètres.The width of the strips 4 can be between a few hundredths of a mm and a few millimeters.

Par ailleurs, les bandes d'émail 4 ont de préférence une section transversale qui diminue progressivement de l'avant vers l'arrière de la semelle.Furthermore, the enamel strips 4 preferably have a cross section which gradually decreases from the front to the rear of the sole.

De ce fait, le coefficient de frottement par unité de surface entre la surface de la semelle et les articles à repasser diminue progressivement de l'avant vers l'arrière de la semelle, ce qui est favorable à l'obtention d'une bonne qualité de repassage.As a result, the coefficient of friction per unit area between the surface of the soleplate and the articles to be ironed decreases progressively from the front to the rear of the soleplate, which is favorable for obtaining good quality. ironing.

D'autre part, la demanderesse a constaté lors d'essais qu'il était avantageux que le rapport surface des bandes en relief 4 sur surface de la semelle non recouverte par les bandes soit compris entre 0,5 et 2,5.On the other hand, the Applicant has observed during tests that it was advantageous for the ratio of the surface of the raised bands 4 to the surface of the sole not covered by the bands to be between 0.5 and 2.5.

Les meilleurs résultats ont été obtenus lorsque ledit rapport est compris entre 1,8 et 2 à l'avant de la semelle, entre 0,75 et 0,85 au centre de la semelle et entre 0,6 et 0,7 à l'arrière de la semelle. De plus, il a été établi qu'il était avantageux que la surface de la semelle qui présente les bandes en relief 4 présente une cavité centrale qui couvre entre 25 et 70% de la surface de la semelle et dont la profondeur varie progressivement entre 0 près des bords de la semelle et une valeur comprise entre 0,3 et 1 mm près du centre de la semelle. Cette cavité permet encore de réduire davantage la glisse de la semelle de fer sur les articles à repasser. Il a également été constaté qu'il était avantageux que la dureté de l'émail constituant les bandes en relief 4 soit plus élevée que celle de l'émail 3 sur laquelle lesdites bandes 4 sont appliquées.The best results have been obtained when said ratio is between 1.8 and 2 at the front of the sole, between 0.75 and 0.85 at the center of the sole and between 0.6 and 0.7 at the rear of the sole. In addition, it has been established that it was advantageous for the surface of the sole which has the raised bands 4 to have a central cavity which covers between 25 and 70% of the surface of the sole and whose depth varies progressively between 0 near the edges of the sole and a value between 0.3 and 1 mm near the center of the sole. This cavity further reduces the sliding of the iron soleplate on ironing items. It has also been found that it is advantageous that the hardness of the enamel constituting the relief bands 4 is higher than that of the enamel 3 on which said bands 4 are applied.

De ce fait, on réduit l'usure des bandes en relief au détriment de celle de la couche d'émail sur laquelle sont appliquées les bandes. Cette usure plus rapide de la couche d'émail augmente l'amplitude du relief des bandes et réduit la glisse.Therefore, the wear of the raised bands is reduced to the detriment of that of the enamel layer on which the bands are applied. This faster wear of the enamel layer increases the amplitude of the relief of the bands and reduces slipping.

Il est avantageux que la dureté de l'émail des bandes en relief 4 soit supérieure d'au moins 15% de celle de l'émail de la couche sous-jacente.It is advantageous that the hardness of the enamel of the relief bands 4 is at least 15% higher than that of the enamel of the underlying layer.

Ainsi, la dureté de la couche d'émail sousjacente mesurée avec une pointe Vickers appliquée sous une force de 0,3 daN est de préférence comprise entre 470 et 570, tandis que celle de l'émail des bandes en relief se situe de préférence entre 540 et 650.Thus, the hardness of the underlying enamel layer measured with a Vickers point applied under a force of 0.3 daN is preferably between 470 and 570, while that of the enamel of the relief bands is preferably between 540 and 650.

On donne ci-après un exemple de mise en oeuvre du revêtement d'émail de la semelle conforme à l'invention.An example of implementation of the enamel coating of the soleplate according to the invention is given below.

On pulvérise sur la surface de la plaque en aluminium 1 de la semelle une barbotine aqueuse de fritte d'émail (pour aluminium) pour constituer la première couche 3. Après séchage de cette première couche 3, on applique sur celle-ci, à travers un masque sérigraphique reproduisant les bandes 4, une seconde couche d'émail sous la forme d'une pâte huileuse qui renferme:

  • a) 100 parties en poids d'une fritte d'émail pour aluminium renfermant par exemple :
    34% de SiO₂
    20% de Na₂O
    10% de K₂O
    2% de Li₂O
    20% de TiO₂
    2% de Al₂O₃
    2% de P₂O₅
    10% de V₂O₅
  • b) 5 à 10 parties de pigments minéraux résistant à une température au moins égale à 600°C.
  • c) 25 à 45 parties d'huile de pin.
An aqueous slip of enamel frit (for aluminum) is sprayed onto the surface of the aluminum plate 1 of the sole to form the first layer 3. After drying of this first layer 3, it is applied to it, through a serigraphic mask reproducing the bands 4, a second layer of enamel in the form of an oily paste which contains:
  • a) 100 parts by weight of an enamel frit for aluminum containing for example:
    34% SiO₂
    20% Na₂O
    10% of K₂O
    2% Li₂O
    20% TiO₂
    2% Al₂O₃
    2% P₂O₅
    10% V₂O₅
  • b) 5 to 10 parts of mineral pigments resistant to a temperature at least equal to 600 ° C.
  • c) 25 to 45 parts of pine oil.

Cette couche est séchée.This layer is dried.

Les deux couches d'émail ainsi obtenues sont cuites simultanément à une température de l'ordre de 550°C.The two layers of enamel thus obtained are baked simultaneously at a temperature of the order of 550 ° C.

Cette cuisson fait vitrifier les particules d'émail. Ce frittage a pour effet d'arrondir les bords des bandes d'émail 4 et de lisser la surface de celles-ci, en supprimant tout angle vif et toute aspérité.This cooking makes the enamel particles vitrify. This sintering has the effect of rounding the edges of the enamel strips 4 and smoothing the surface thereof, removing any sharp angles and any roughness.

Les bandes en émail 4 formées sur la surface de la semelle réduisent notablement la surface de contact entre la semelle et les textiles à repasser. De plus, grâce au profil arrondi et lisse de ces bandes 4, la "glisse" de la semelle est nettement améliorée, notamment dans son sens longitudinal qui correspond au sens normal de repassage.The enamel bands 4 formed on the surface of the sole significantly reduce the contact surface between the sole and the textiles to be ironed. In addition, thanks to the rounded and smooth profile of these bands 4, the "gliding" of the sole is significantly improved, in particular in its longitudinal direction which corresponds to the normal ironing direction.

Les bandes d'émail 4 ont également pour effet d'espacer de quelques dizaines de microns la surface de la semelle, de laquelle débouchent les orifices 2 de passage de la vapeur, par rapport à la surface des articles textiles, ce qui crée des canaux de diffusion de la vapeur répartis sur l'ensemble de la semelle, qui favorisent l'action de cette vapeur sur les textiles.The enamel strips 4 also have the effect of spacing a few tens of microns between the surface of the soleplate, from which the orifices 2 for the passage of steam open, with respect to the surface of the textile articles, which creates channels of diffusion of the vapor distributed on the whole of the sole, which favor the action of this vapor on textiles.

Le tableau I ci-après, démontre l'amélioration surprenante de glisse d'une semelle conforme à l'invention à l'égard d'autres semelles. TABLEAU I Référence du fer 1 2 3 4 5 6 7 8 9 Revêtement de la semelle Aluminium Email Acier inox Acier chromé Email PTFE Acier chromé Laiton chromé Email+bandes Poids du fer vide 1,375g 1,380g 1,400g 1,530g 1,130g 1,080g 1,510g 1,090g 1,380g Tissus repassés Effort de traction mesuré Polyester 309g 352g 331g 431g 346g 217g 456g 353g 232g Laine 244g 192g 270g 324g 171g 203g 302g 385g 115g Polyester-coton 50/50 300g 189g 228g 349g 179g 204g 338g 303g 129g Coton 312g 157g 283g 336g 143g 295g 244g 401g 85g Coton avec vapeur 347g 210g 298g 392g 274g 245g 378g 176g Table I below shows the surprising improvement in sliding of a sole according to the invention with regard to other soles. TABLE I Iron reference 1 2 3 4 5 6 7 8 9 Sole coating Aluminum E-mail Stainless steel Chrome steel E-mail PTFE Chrome steel Chrome-plated brass Email + tapes Weight of empty iron 1.375g 1,380g 1,400g 1.530g 1.130g 1.080g 1.510g 1.090g 1,380g Ironed fabrics Measured tensile force Polyester 309g 352g 331g 431g 346g 217g 456g 353g 232g Oldest boy 244g 192g 270g 324g 171g 203g 302g 385g 115g Polyester-cotton 50/50 300g 189g 228g 349g 179g 204g 338g 303g 129g Cotton 312g 157g 283g 336g 143g 295g 244g 401g 85g Cotton with steam 347g 210g 298g 392g 274g 245g 378g 176g

Sur ce tableau, le fer n° 2 comporte une semelle émaillée, comme décrite dans le brevet français n° 2 581 402 de la demanderesse.In this table, the iron No. 2 has an enameled sole, as described in French patent No. 2,581,402 of the applicant.

Le fer n° 9 est équipé d'une semelle en aluminium émaillée et portant des bandes émaillées, conformément à la présente invention.Iron No. 9 is equipped with an enameled aluminum soleplate and bearing enameled bands, in accordance with the present invention.

Les valeurs de l'effort de traction mesuré illustrent l'aptitude au glissement de la semelle.The values of the measured tensile force illustrate the sliding ability of the sole.

Ces valeurs montrent que la semelle selon l'invention glisse nettement mieux que les autres, quelle que soit la nature du textile repassé, la température de repassage et avec ou sans vapeur.These values show that the sole according to the invention slides clearly better than the others, whatever the nature of the ironed textile, the ironing temperature and with or without steam.

Cette amélioration surprenante de la glisse est également démontrée par le tableau II ci-après, sur lequel on a représenté les coefficients de frottement obtenus pour différents revêtements de semelles de fer. TABLEAU II Référence du fer 1 2 3 4 5 Revêtement de la semelle aluminium émail acier inox chrome émail + bandes (invention) Tissus repassés Coefficient de frottement Polyester 0,225 0,255 0,24 0,33 0,18 Coton 0,225 0,11 0,205 0,185 0,06 Laine 0,175 0,14 0,195 0,22 0,09 Coton avec vapeur 0,25 0,155 0,22 0,195 0,135 Polyester-coton 50/50 0,22 0,14 0,16 0,24 0,10 This surprising improvement in sliding is also demonstrated by Table II below, on which the friction coefficients obtained for different coatings of iron soles are shown. TABLE II Iron reference 1 2 3 4 5 Sole coating aluminum E-mail stainless steel chromium enamel + bands (invention) Ironed fabrics Coefficient of friction Polyester 0.225 0.255 0.24 0.33 0.18 Cotton 0.225 0.11 0.205 0.185 0.06 Oldest boy 0.175 0.14 0.195 0.22 0.09 Cotton with steam 0.25 0.155 0.22 0.195 0.135 Polyester-cotton 50/50 0.22 0.14 0.16 0.24 0.10

Le tableau II ci-dessus montre en particulier que la semelle à bandes en relief selon la présente invention, fournit dans tous les cas - quelle que soit la matière textile repassée, les coefficients de friction les plus faibles.Table II above shows in particular that the sole with raised bands according to the present invention provides in all cases - whatever the ironed textile material, the lowest coefficients of friction.

Claims (13)

1. Semelle de fer à repasser dont la surface destinée à être appliquée sur les articles à repasser est revêtue ou non d'émail, caractérisée en ce que ladite surface comporte des bandes d'émail (4) en relief sensiblement parallèles et s'étendant dans la direction longitudinale de la semelle.1. Iron soleplate whose surface intended to be applied to the articles to be ironed or not coated with enamel, characterized in that said surface comprises bands of enamel (4) in relief substantially parallel and extending in the longitudinal direction of the sole. 2. Semelle conforme à la revendication 1, caractérisée en ce que le bord des bandes (4) est arrondi.2. Sole according to claim 1, characterized in that the edge of the strips (4) is rounded. 3. Semelle conforme à l'une des revendications 1 ou 2, caractérisée en ce que lesdites bandes d'émail (4) sont appliquées sur une couche d'émail (3).3. Sole according to one of claims 1 or 2, characterized in that said enamel strips (4) are applied to an enamel layer (3). 4. Semelle conforme à l'une des revendications 1 à 3, caractérisée en ce que lesdites bandes d'émail (4) sont appliquées par sérigraphie.4. Sole according to one of claims 1 to 3, characterized in that said enamel strips (4) are applied by screen printing. 5. Semelle conforme à l'une des revendications 1 à 4, caractérisée en ce que lesdites bandes d'émail (4) sont réalisées par frittage d'une composition de particules d'émail.5. Sole according to one of claims 1 to 4, characterized in that said enamel strips (4) are produced by sintering a composition of enamel particles. 6. Semelle conforme à l'une des revendications 3 à 5, caractérisée en ce que ladite couche d'émail (3) est appliquée par pulvérisation d'une composition de particules d'émail vitrifiables, les bandes d'émail (4) étant appliquées par sérigraphie sur ladite couche (3) à partir d'une composition de particules d'émail vitrifiables sensiblement à la même température que celles de ladite couche (3), cette couche (3) et ces bandes (4) étant cuites simultanément.6. Sole according to one of claims 3 to 5, characterized in that said enamel layer (3) is applied by spraying a composition of vitrifiable enamel particles, the enamel strips (4) being applied by screen printing on said layer (3) from a composition of vitrifiable enamel particles at substantially the same temperature as those of said layer (3), this layer (3) and these strips (4) being baked simultaneously. 7. Semelle conforme à l'une des revendications 1 à 6, caractérisée en ce que lesdites bandes (4) présentent une épaisseur comprise entre 10 et 100 µm.7. Sole according to one of claims 1 to 6, characterized in that said strips (4) have a thickness between 10 and 100 µm. 8. Semelle conforme à l'une des revendications 1 à 7, caractérisée en ce que la largeur des bandes (4) est comprise entre quelques centièmes de mm et quelques millimètres.8. Sole according to one of claims 1 to 7, characterized in that the width of the strips (4) is between a few hundredths of a mm and a few millimeters. 9. Semelle conforme à l'une des revendications 1 à 8, caractérisée en ce que les bandes (4) ont une section transversale qui diminue progressivement de l'avant vers l'arrière de la semelle.9. Sole according to one of claims 1 to 8, characterized in that the bands (4) have a cross section which gradually decreases from the front to the rear of the sole. 10. Semelle conforme à l'une des revendications 1 à 9, caractérisée en ce que le rapport surface des bandes en relief (4) sur surface de la semelle non recouverte par les bandes, est compris entre 0,5 et 2,5.10. Sole according to one of claims 1 to 9, characterized in that the surface area of the raised bands (4) on the surface of the sole not covered by the bands, is between 0.5 and 2.5. 11. Semelle conforme à la revendication 10, caractérisée en ce que ledit rapport est compris entre 1,8 et 2 à l'avant de la semelle, entre 0,75 et 0,85 au centre de la semelle et entre 0,6 et 0,7 à l'arrière de la semelle.11. Sole according to claim 10, characterized in that said ratio is between 1.8 and 2 at the front of the sole, between 0.75 and 0.85 at the center of the sole and between 0.6 and 0.7 at the back of the sole. 12. Semelle conforme à l'une des revendications 1 à 11, caractérisée en ce que la surface de la semelle qui présente les bandes en relief (4) présente une cavité centrale qui couvre entre 25 et 70% de la surface de la semelle et dont la profondeur varie progressivement entre 0 près des bords de la semelle et une valeur comprise entre 0,3 et 1 mm près du centre de la semelle.12. Sole according to one of claims 1 to 11, characterized in that the surface of the sole which has the raised bands (4) has a central cavity which covers between 25 and 70% of the surface of the sole and the depth of which varies gradually between 0 near the edges of the sole and a value between 0.3 and 1 mm near the center of the sole. 13. Semelle conforme à l'une des revendications 3 à 12, caractérisée en ce que la dureté de l'émail constituant les bandes en relief (4) est plus élevée que celle de l'émail (3) sur laquelle lesdites bandes (4) sont appliquées.13. Sole according to one of claims 3 to 12, characterized in that the hardness of the enamel constituting the raised bands (4) is higher than that of the enamel (3) on which said bands (4 ) are applied.
EP90400076A 1989-01-11 1990-01-10 Enamelled iron sole plate Expired - Lifetime EP0378479B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900251 1989-01-11
FR8900251A FR2641553B1 (en) 1989-01-11 1989-01-11 ENAMELLED IRON SOLE

Publications (2)

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EP0378479A1 true EP0378479A1 (en) 1990-07-18
EP0378479B1 EP0378479B1 (en) 1993-08-18

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US (1) US5014454A (en)
EP (1) EP0378479B1 (en)
JP (1) JPH02264699A (en)
CA (1) CA2007293C (en)
DE (1) DE69002771T2 (en)
ES (1) ES2044456T3 (en)
FR (1) FR2641553B1 (en)

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EP0457678A1 (en) * 1990-05-18 1991-11-21 Seb S.A. Iron sole plate with a non-stick coating
EP0711863A1 (en) 1994-11-14 1996-05-15 Koninklijke Philips Electronics N.V. Iron having an anti-friction layer
EP0712954A1 (en) 1994-11-18 1996-05-22 ARIETE S.r.l. Method for manufacturing irons with steel sole plate
EP0713937A1 (en) * 1994-11-25 1996-05-29 Seb S.A. Iron soleplate
EP0869215A1 (en) * 1997-03-25 1998-10-07 Krainel, S.A. Clothes iron sole
WO2012052940A3 (en) * 2010-10-22 2012-06-21 BSH Bosch und Siemens Hausgeräte GmbH Method for applying colour graphics to the sole plate of an iron
EP1988295B1 (en) * 2007-05-04 2013-06-26 Bümach Engineering International B.V. Surface-coated machine elements

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FR2662188B1 (en) * 1990-05-18 1992-09-04 Seb Sa IRON WITH SOLE COVERED BY A COATING REDUCING FRICTION.
US5146700A (en) * 1991-10-31 1992-09-15 Coors Technical Ceramics Company Steam iron with bonded ceramic and aluminum components
ES1035560Y (en) * 1996-11-18 1997-11-16 Agrupada Invest Off PERFECTED IRON SOLE.
FR2825385B1 (en) * 2001-06-01 2003-09-12 Seb Sa IRON WITH SELF-CLEANING SOLE
DE102009045522A1 (en) * 2009-10-09 2011-04-14 BSH Bosch und Siemens Hausgeräte GmbH Iron sole plate, particularly for steam iron, has surface, which is provided for placement on objects to be ironed, where surface is made of anodized aluminum or is coated with anodized aluminum layer
ES2366512B1 (en) * 2009-10-09 2012-09-06 Bsh Electrodomésticos España, S.A. IRON SOLE, IN SPECIAL, FOR A STEAM IRON.
JP2011239963A (en) * 2010-05-18 2011-12-01 Toshiba Home Technology Corp Iron
ES2390028B1 (en) * 2011-04-08 2013-10-21 BSH Electrodomésticos España S.A. Procedure for coating an aluminum surface of an aluminum element, aluminum element and aluminum plate sole
US10053814B2 (en) * 2014-07-15 2018-08-21 Sunbeam Products, Inc. Iron with steam channels and textured soleplate
USD804131S1 (en) * 2016-10-17 2017-11-28 Sunbeam Products, Inc. Iron soleplate
USD804132S1 (en) * 2016-10-18 2017-11-28 Sunbeam Products, Inc. Iron soleplate

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DE2508479A1 (en) * 1975-02-27 1976-09-02 Philips Patentverwaltung Sole plate for iron with glass-like carbon surface - resistant to scratching, wear and heat
DE2616168A1 (en) * 1976-04-13 1977-10-27 Keramail Silikat Glasur Gmbh & Enamelled cooking pan highly resistant to corrosion - has extra outer covering of enamel containing different substances from inner layer
GB2091527A (en) * 1981-01-14 1982-07-28 Boussois Sa Heatable Panels
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457678A1 (en) * 1990-05-18 1991-11-21 Seb S.A. Iron sole plate with a non-stick coating
FR2662189A1 (en) * 1990-05-18 1991-11-22 Seb Sa IRON IRON WITH AN INSOLE COVERED BY ANTI-ADHESIVE COATING.
US5165185A (en) * 1990-05-18 1992-11-24 Seb S.A. Ironing device sole-plate with resin projections
US5943799A (en) * 1994-11-14 1999-08-31 U.S. Philips Corporation Iron having an anti-friction layer
BE1008961A3 (en) * 1994-11-14 1996-10-01 Philips Electronics Nv IRON WITH SLIDE LAYER.
EP0711863A1 (en) 1994-11-14 1996-05-15 Koninklijke Philips Electronics N.V. Iron having an anti-friction layer
EP0712954A1 (en) 1994-11-18 1996-05-22 ARIETE S.r.l. Method for manufacturing irons with steel sole plate
EP0713937A1 (en) * 1994-11-25 1996-05-29 Seb S.A. Iron soleplate
FR2727440A1 (en) * 1994-11-25 1996-05-31 Seb Sa IRON CONTAINING AN IMPROVED SOLE
EP0869215A1 (en) * 1997-03-25 1998-10-07 Krainel, S.A. Clothes iron sole
EP1988295B1 (en) * 2007-05-04 2013-06-26 Bümach Engineering International B.V. Surface-coated machine elements
WO2012052940A3 (en) * 2010-10-22 2012-06-21 BSH Bosch und Siemens Hausgeräte GmbH Method for applying colour graphics to the sole plate of an iron
ES2387962A1 (en) * 2010-10-22 2012-10-04 BSH Electrodomésticos España S.A. Method for applying colour graphics to the sole plate of an iron

Also Published As

Publication number Publication date
US5014454A (en) 1991-05-14
FR2641553B1 (en) 1991-08-23
CA2007293A1 (en) 1990-07-11
ES2044456T3 (en) 1994-01-01
CA2007293C (en) 1998-05-12
EP0378479B1 (en) 1993-08-18
DE69002771D1 (en) 1993-09-23
JPH02264699A (en) 1990-10-29
FR2641553A1 (en) 1990-07-13
DE69002771T2 (en) 1994-02-24

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