EP0200647A1 - Iron sole plate covered by an enamel coating - Google Patents

Iron sole plate covered by an enamel coating Download PDF

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Publication number
EP0200647A1
EP0200647A1 EP19860400913 EP86400913A EP0200647A1 EP 0200647 A1 EP0200647 A1 EP 0200647A1 EP 19860400913 EP19860400913 EP 19860400913 EP 86400913 A EP86400913 A EP 86400913A EP 0200647 A1 EP0200647 A1 EP 0200647A1
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EP
European Patent Office
Prior art keywords
sole
enamel coating
enamel
iron
aluminum alloy
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Granted
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EP19860400913
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German (de)
French (fr)
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EP0200647B2 (en
EP0200647B1 (en
Inventor
Henri Piera
Bernard Louison
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SEB SA
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SEB SA
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Application filed by SEB SA filed Critical SEB SA
Priority to AT86400913T priority Critical patent/ATE46376T1/en
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    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • the present invention relates to an iron soleplate, in particular a steam sole.
  • the invention also relates to irons, comprising such a sole.
  • the iron soles, dry or steam, are currently made of aluminum alloy molded in particular by pressure injection.
  • These aluminum alloys have a relatively low hardness, so that the surface of the iron soles is easily scratched when ironing textile articles comprising hard objects such as buttons, zippers, staples, etc.
  • the object of the present invention is to remedy all the aforementioned drawbacks.
  • the soleplate of iron in particular steam, is characterized in that at least its surface intended to be applied to the articles to be ironed, is covered by an enamel coating.
  • this enamel coating effectively protects the soleplate against oxidation caused by water vapor and other chemicals.
  • the stains caused by lime caused by the evaporation of water or by the carbonization of organic matter from ironed articles do not offer any grip on the enamel coating, so that the soleplate is easily cleaned .
  • the enamel coating thus not only prolongs the life of the iron, makes it easier to use and clean, but also reduces the cost of this iron.
  • the sole can be made of aluminum alloy, molded for example by pressure injection, vacuum or molded in a shell and containing silicon. This type of aluminum alloy is economical, but relatively soft. The enamel coating, however, gives the surface of the sole a largely sufficient hardness.
  • the aforementioned drawback is eliminated by forming the enamel coating from a sintered enamel frit at a temperature below 500 ° C.
  • the Applicant has found that the emissivity of a polished aluminum soleplate was of the order of 0.1, while that of an enamel coating was approximately 0.8.
  • a more favorable transfer corresponding to 40 Watts is obtained when the soleplate is at 225 ° C. in the case of dry ironing, the consumption being of the order of 630 Watts during this ironing.
  • the temperature drop caused by the enamel coating is around 3 ° C, which is negligible.
  • We can therefore consider that the ironing performance with an enameled soleplate is 40/630, that is 6% better than that of a polished aluminum soleplate, not coated with enamel. This result is surprising, knowing that the enamel is thermally insulating, so that one could expect a decrease in ironing performance.
  • the soleplate 1 of an iron is made of aluminum alloy injection molded under pressure, under vacuum or in shell, such as AS 9 U 3 , ASgG, l 'AU 4 G, AS 12 or AG 5 (A denotes aluminum, S denotes silicon, U denotes copper and G denotes magnesium).
  • a resistance, armored tubular heating element 2 is embedded by overmolding.
  • the boss 3 surrounding the resistor 2 defines an interior vaporization chamber 4 and a peripheral chamber 5 for distributing the vapor. These two chambers 4, 5 are intended to be covered by a sealed cover, not shown.
  • the peripheral steam distribution chamber 5 opens to the outside via steam distribution channels 6 passing through the soleplate 1.
  • the surface 7 of the sole 1 which is intended to be applied to the articles to be ironed is covered by an enamel coating 8.
  • This enamel coating 8 is produced by projecting onto the surface 7 of the sole, an enamel frit slip which is then dried and then baked to make the mineral particles (Si0 2 and other metal oxides) contained in this slip vitrify.
  • a sintered enamel frit is used at a temperature below 500 ° C such as the frit sold by FERRO under the designation GL 43-48 which sintered at 480-490 ° C.
  • the thickness of the enamel coating 8 is generally between 20 and 100 microns.
  • Excellent adhesion of the enamel coating 8 is obtained by subjecting the surface 7 of the sole to mechanical or chemical abrasion intended to form micro-asperities or micro-cavities on this surface. It is also advantageous to apply to the surface 7 of the sole a bonding undercoat formed for example by chromating.
  • the enamel coating 8 can also partially or entirely cover the interior surface of the steam distribution channels 6, so as to limit the adhesion of the limescale formed by evaporation of the water and liable to obstruct these canals.
  • the enamel coating can be formed from two layers of enamel 8a, 8b (see Figure 2) fired simultaneously according to the process described in French patent application No. 83 06178 of April 15, 1983 in the name of the applicant, replacing the enamel frit described in this patent application by that mentioned above which sintered at 480-490 ° C.
  • At least the outer layer 8b can contain colored pigments 9 (see FIG. 2) or can be applied by screen printing if a pattern or a decoration is to be formed on the surface of the sole 1.
  • the enamel coating 8 had, taking into account its thinness, no harmful influence on the thermal conductivity of the sole. Thus, there is no need to load this enamel coating with conductive particles.
  • Figures 3 and 4 describe two examples of iron soleplate using a laminated aluminum alloy sheet.
  • the laminated alloy sheet 1a is assembled with an upper part 1b produced by injection, as in the case of the embodiment according to FIG. 1.
  • This assembly can be carried out for example by hot stamping.
  • the enamel coating 8c applied to the surface of the aluminum alloy sheet 1a can be obtained from a conventional enamel composition for aluminum, sinterable at a temperature between 500 and 600 ° C. It would of course be appropriate for the assembly to withstand this temperature.
  • the sole also comprises an aluminum alloy sheet 1c comprising an enamel coating 8d.
  • a flat resistor 10 coated in an insulating material.
  • This flat resistor 10 is pressed against the sheet 1c by means of a backing plate 11, by means of a crimping 12 carried out along the edges of the sheet 1c.
  • the invention also applies to the soles of irons in cast iron.
  • enamel coating 8, 8a, 8b, 8c could also be applied to the lateral faces of the sole.
  • the enamel coating could also cover the interior of the vaporization and steam distribution chambers 4, 5.
  • the deposit of tartar or lime in these chambers would have reduced adhesion and could therefore be removed more easily than in conventional soles.

Abstract

The iron baseplate (1) has an enamel coating (8) on its surface (7) intended to be applied to the articles for ironing. This enamel coating (8) provides inter alia an improved coefficient of friction between the baseplate and the textile articles for ironing. Use inter alia in steam irons.

Description

La présente invention concerne une semelle de fer à repasser, notamment à vapeur.The present invention relates to an iron soleplate, in particular a steam sole.

L'invention vise également les fers à repasser, comportant une telle semelle.The invention also relates to irons, comprising such a sole.

Les semelles de fer à repasser, à sec ou à vapeur, sont actuellement réalisées en alliage d'aluminium moulé notamment par injection sous pression.The iron soles, dry or steam, are currently made of aluminum alloy molded in particular by pressure injection.

Ces -alliages d'aluminium présentent une dureté relativement faible, de sorte que la surface des semelles de fer à repasser est facilement rayée lors du repassage d'articles textiles comportant des objets durs tels que boutons, fermetures éclair, agrafes, etc.These aluminum alloys have a relatively low hardness, so that the surface of the iron soles is easily scratched when ironing textile articles comprising hard objects such as buttons, zippers, staples, etc.

Ces rayures provoquent une usure de la semelle qui a pour effet d'augmenter le coefficient de glissement de celle-ci par rapport aux articles textiles à repasser en rendant ainsi le repassage de plus en plus pénible pour l'utilisateur.These scratches cause wear of the sole which has the effect of increasing the sliding coefficient of the latter relative to the textile articles to be ironed, thus making ironing more and more difficult for the user.

Par ailleurs, ces semelles en alliage d'aluminium deviennent, en fonction de l'usage, de plus en plus sensibles au tachage dû à l'oxydation provoquée notamment par la vapeur d'eau et aux matières organiques carbonisées provenant des articles textiles.Furthermore, these aluminum alloy soles become, depending on the use, more and more sensitive to staining due to the oxidation caused in particular by water vapor and carbonized organic materials coming from textile articles.

Ces taches salissent les articles textiles si la semelle de fer à repasser n'est pas fréquemment nettoyée.These stains dirty textile articles if the iron soleplate is not cleaned frequently.

Bien entendu, la présence de rayures à la surface de la semelle de fer favorise l'adhérence de ces taches et celles-ci deviennent très difficiles à nettoyer lorsque la semelle est fortement rayée.Of course, the presence of scratches on the surface of the iron sole promotes the adhesion of these spots and these become very difficult to clean when the sole is heavily scratched.

Actuellement, les mesures suivantes sont adoptées pour limiter la formation de rayures sur les semelles de fers à repasser :

  • - les fers à repasser sont livrés aux utilisateurs avec une protection provisoire qui met la semelle à l'abri des chocs mécaniques engendrés lors de la manutention et du transport ; cette mesure grève le prix de revient des fers,
  • - les--semelles sont réalisées en alliage d'aluminium renfermant du magnésium, qui est plus dur mais plus onéreux que les alliages d'aluminium plus courants renfermant du silicium,
  • - la surface de la semelle subit un polissage soigné pour réduire le plus possible son coefficient de glissement par rapport aux articles à repasser ; cette opération est également coûteuse.
Currently, the following measures are adopted to limit the formation of scratches on the soles of irons:
  • - the irons are delivered to the users with a temporary protection which puts the sole sheltered from mechanical shock generated during handling and transport; this measure strikes the cost price of irons,
  • - the - soles are made of aluminum alloy containing magnesium, which is harder but more expensive than the more common aluminum alloys containing silicon,
  • - the surface of the sole undergoes a careful polishing to reduce as much as possible its sliding coefficient compared to the articles to be ironed; this operation is also costly.

Le but de la présente invention est de remédier à tous les inconvénients précités.The object of the present invention is to remedy all the aforementioned drawbacks.

Suivant l'invention, la semelle de fer à repasser, notamment à vapeur, est caractérisée en ce qu'au moins sa surface destinée à être appliquée sur les articles à repasser, est recouverte par un revêtement d'émail.According to the invention, the soleplate of iron, in particular steam, is characterized in that at least its surface intended to be applied to the articles to be ironed, is covered by an enamel coating.

Grâce à ce revêtement d'émail, on augmente considérablement la dureté de la semelle, de sorte que celle-ci résiste remarquablement bien à l'abrasion provoquée par les parties métalliques des articles textiles.Thanks to this enamel coating, the hardness of the sole is considerably increased, so that it resists remarkably well the abrasion caused by the metallic parts of textile articles.

De plus, ce revêtement d'émail protège efficacement la semelle à l'égard de l'oxydation provoquée par la vapeur d'eau et autres produits chimiques.In addition, this enamel coating effectively protects the soleplate against oxidation caused by water vapor and other chemicals.

Par ailleurs, les taches provoquées par le calcaire engendrées par l'évaporation de l'eau ou par la carbonisation des matières organiques provenant des articles repassés, n'offrent aucune prise sur le revêtement d'émail, de sorte que la semelle est aisément nettoyable.In addition, the stains caused by lime caused by the evaporation of water or by the carbonization of organic matter from ironed articles, do not offer any grip on the enamel coating, so that the soleplate is easily cleaned .

D'autre part, on a constaté que le revêtement d'émail permettait de réduire de façon substantielle le coefficient de glissement de la semelle sur les articles à repasser, ce qui permet aux utilisateurs de repasser sans effort. Cette propriété est surprenante étant donné qu'elle ne résulte pas des propriétés connues des revêtements d'émail. C'est ce qui explique d'ailleurs la,raison pour laquelle des revêtements en émail n'ont jamais été utilisés pour améliorer le coefficient de glissement. En outre, ce revêtement d'émail résiste aux chocs mécaniques et permet par conséquent d'éviter l'emploi d'une protection provisoire. Il permet également d'utiliser pour la semelle des alliages moins coûteux et de remplacer le polissage coûteux de la semelle, par une simple abrasion mécanique à l'aide d'une toile abrasive.On the other hand, it was found that the coating of enamel made it possible to substantially reduce the coefficient of sliding of the sole on the ironing items, allowing users to iron effortlessly. This property is surprising since it does not result from the known properties of enamel coatings. This also explains the reason why enamel coatings have never been used to improve the sliding coefficient. In addition, this enamel coating resists mechanical shock and therefore avoids the use of temporary protection. It also makes it possible to use less expensive alloys for the sole and to replace the costly polishing of the sole, by simple mechanical abrasion using an abrasive cloth.

Le revêtement d'émail permet ainsi, non seulement de prolonger la durée de vie du fer à repasser, de rendre son utilisation et son nettoyage plus aisés, mais permet également de diminuer le coût de ce fer a repasser.The enamel coating thus not only prolongs the life of the iron, makes it easier to use and clean, but also reduces the cost of this iron.

La semelle peut être réalisée en alliage d'aluminium, moulé par exemple par injection sous pression, sous vide ou moulé en coquille et renfermant du silicium. Ce type d'alliage d'aluminium est économique, mais relativement mou. Le revêtement d'émail confère toutefois à la surface de la semelle une dureté largement suffisante.The sole can be made of aluminum alloy, molded for example by pressure injection, vacuum or molded in a shell and containing silicon. This type of aluminum alloy is economical, but relatively soft. The enamel coating, however, gives the surface of the sole a largely sufficient hardness.

Ces alliages d'aluminium moulés présentent la particularité qu'il subsiste au sein de l'alliage des microbulles d'air. Dans les semelles classiques, non revêtues d'émail, la présence de ces microbulles d'air n'est pas néfaste.These cast aluminum alloys have the particularity that there remains within the alloy of air microbubbles. In conventional soles, not coated with enamel, the presence of these microbubbles of air is not harmful.

Toutefois, l'expérience a montré que si on applique sur ces semelles un émail classique pour aluminium frittable à une température de l'ordre de 600°C, bien que le revêtement d'émail présente une bonne adhérence, on obtient un taux de refus très élevé, ce que la demanderesse explique de la façon suivante : lorsqu'on chauffe la semelle à une température supérieure à 350°C, les microbulles d'air précitées s'échappent de l'alliage. A partir de 500°C ce phénomène est suffisant pour cloquer le revêtement d'émail. De plus, au-delà de cette température, on constate une déformation des semelles.However, experience has shown that if a conventional sintered aluminum enamel is applied to these soles at a temperature of the order of 600 ° C., although the enamel coating has good adhesion, a refusal rate is obtained. very high, what the Applicant explains in the following way: when the soleplate is heated to a temperature above 350 ° C., the aforementioned microbubbles of air escape from the alloy. From 500 ° C this phenomenon is sufficient to blister the enamel coating. In addition, beyond this temperature, there is a deformation of the soles.

Selon une caractéristique importante de la présente invention, l'inconvénient précité est supprimé en formant le revêtement d'émail à partir d'une fritte d'émail frittable à une température inférieure à 500°C.According to an important characteristic of the present invention, the aforementioned drawback is eliminated by forming the enamel coating from a sintered enamel frit at a temperature below 500 ° C.

Par ailleurs, la demanderesse a constaté que l'émissi- vité d'une semelle en aluminium poli était de l'ordre de 0,1, tandis que celle d'un revêtement d'émail était égale à environ 0,8. Ainsi dans le cas d'une semelle d'aluminium revêtue d'émail on obtient un transfert plus favorable correspondant à 40 Watts lorsque la semelle est à 225°C dans le cas d'un repassage à sec, la consommation étant de l'ordre de 630 Watts lors de ce repassage. La chute de température causée par le revêtement d'émail est de l'ordre de 3°C, ce qui est négligeable. On peut donc considérer que les performances du repassage avec une semelle émaillée sont de 40/630 soit 6% supérieures à celles d'une semelle en aluminium poli, non revêtue d'émail. Ce résultat est surprenant, sachant que l'émail est thermiquement isolant, de sorte qu'on pouvait s'attendre à une diminution des performances du repassage.Furthermore, the Applicant has found that the emissivity of a polished aluminum soleplate was of the order of 0.1, while that of an enamel coating was approximately 0.8. Thus in the case of an aluminum soleplate coated with enamel, a more favorable transfer corresponding to 40 Watts is obtained when the soleplate is at 225 ° C. in the case of dry ironing, the consumption being of the order of 630 Watts during this ironing. The temperature drop caused by the enamel coating is around 3 ° C, which is negligible. We can therefore consider that the ironing performance with an enameled soleplate is 40/630, that is 6% better than that of a polished aluminum soleplate, not coated with enamel. This result is surprising, knowing that the enamel is thermally insulating, so that one could expect a decrease in ironing performance.

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 coupe transversale d'une semelle de fer à repasser comportant un revêtement d'émail,
  • - la figure 2 est une coupe à grande échelle et partielle d'un revêtement d'émail composé de deux couches,
  • - la figure 3 est une vue analogue à la figure 1 concernant une variante de réalisation,
  • - la figure 4 es.t une vue analogue à la figure 1 concernant une autre variante de réalisation.
In the accompanying drawings, given by way of nonlimiting examples
  • FIG. 1 is a cross-sectional view of an iron soleplate comprising an enamel coating,
  • FIG. 2 is a large-scale and partial section of an enamel coating composed of two layers,
  • FIG. 3 is a view similar to FIG. 1 concerning an alternative embodiment,
  • - Figure 4 es.t a view similar to Figure 1 relating to another alternative embodiment.

Dans la réalisation de la figure 1, la semelle 1 de fer à repasser est en alliage d'aluminium moulé par injection sous pression, sous vide ou en coquille, tel que de 1'AS9U3, de l'ASgG, de l'AU4G, de l'AS12 ou de 1'AG5 (A désigne l'aluminium, S le silicium, U le cuivre et G le magnésium). Dans l'alliage d'aluminium de la semelle 1, est noyée par surmoulage, une résistance, tubulaire blindée de chauffage 2.In the embodiment of FIG. 1, the soleplate 1 of an iron is made of aluminum alloy injection molded under pressure, under vacuum or in shell, such as AS 9 U 3 , ASgG, l 'AU 4 G, AS 12 or AG 5 (A denotes aluminum, S denotes silicon, U denotes copper and G denotes magnesium). In the aluminum alloy of the sole 1, a resistance, armored tubular heating element 2 is embedded by overmolding.

Le bossage 3 entourant la résistance 2 délimite une chambre intérieure 4 de vaporisation et une chambre périphérique 5 de distribution de la vapeur. Ces deux chambres 4, 5 sont destinées à être recouvertes par un capot étanche non représenté. La chambre périphérique 5 de distribution de la vapeur débouche à l'extérieur par des canaux 6 de distribution de la vapeur traversant la semelle 1.The boss 3 surrounding the resistor 2 defines an interior vaporization chamber 4 and a peripheral chamber 5 for distributing the vapor. These two chambers 4, 5 are intended to be covered by a sealed cover, not shown. The peripheral steam distribution chamber 5 opens to the outside via steam distribution channels 6 passing through the soleplate 1.

Conformément à l'invention, la surface 7 de la semelle 1 qui est destinée à être appliquée sur les articles à repasser, est recouverte par un revêtement d'émail 8.According to the invention, the surface 7 of the sole 1 which is intended to be applied to the articles to be ironed, is covered by an enamel coating 8.

Ce revêtement d'émail 8 est réalisé en projetant sur la surface 7 de la semelle, une barbotine de fritte d'émail qui est ensuite séchée puis cuite pour faire vitrifier les particules minérales (Si02 et autres oxydes métalliques) contenues dans cette barbotine.This enamel coating 8 is produced by projecting onto the surface 7 of the sole, an enamel frit slip which is then dried and then baked to make the mineral particles (Si0 2 and other metal oxides) contained in this slip vitrify.

, Pour éviter le phénomène de cloquage et la déformation de la semelle évoqués plus haut, dûs à la libération de l'air des microbulles d'air emprisonnées dans l'allïage d'aluminium, on utilise une fritte d'émail frittable à une température inférieure à 500°C telle que la fritte commercialisée par la société FERRO sous la dénomination GL 43-48 qui fritte à 480-490°C. L'épaisseur du revêtement d'émail 8 est généralement comprise entre 20 et 100 microns.To avoid the blistering phenomenon and the deformation of the sole mentioned above, due to the release of air from the air microbubbles trapped in the aluminum alloy, a sintered enamel frit is used at a temperature below 500 ° C such as the frit sold by FERRO under the designation GL 43-48 which sintered at 480-490 ° C. The thickness of the enamel coating 8 is generally between 20 and 100 microns.

Un excellent accrochage du revêtement d'émail 8 est obtenu en soumettant la surface 7 de la semelle à une abrasion mécanique ou chimique destinée à former des micro-aspérités ou micro-cavités sur cette surface. Il est également avantageux d'appliquer sur la surface 7 de la semelle une sous-couche d'accrochage formée par exemple par chromatation.Excellent adhesion of the enamel coating 8 is obtained by subjecting the surface 7 of the sole to mechanical or chemical abrasion intended to form micro-asperities or micro-cavities on this surface. It is also advantageous to apply to the surface 7 of the sole a bonding undercoat formed for example by chromating.

Le revêtement d'émail 8 peut également recouvrir en partie ou en totalité la surface intérieure des canaux 6 de distribution de la vapeur, de façon à limiter l'adhérence du calcaire ou tartre formé par évaporation de l'eau et susceptible d'obstruer ces canaux.The enamel coating 8 can also partially or entirely cover the interior surface of the steam distribution channels 6, so as to limit the adhesion of the limescale formed by evaporation of the water and liable to obstruct these canals.

Le revêtement d'émail peut être formé de deux couches d'émail 8a, 8b (voir figure 2) cuites simultanément conformément au procédé décrit dans la demande de brevet français n° 83 06178 du 15 avril 1983 au nom de la demanderesse, en remplaçant la fritte d'émail décrite dans cette demande de brevet par celle mentionnée plus haut qui fritte à 480-490°C.The enamel coating can be formed from two layers of enamel 8a, 8b (see Figure 2) fired simultaneously according to the process described in French patent application No. 83 06178 of April 15, 1983 in the name of the applicant, replacing the enamel frit described in this patent application by that mentioned above which sintered at 480-490 ° C.

Au moins la couche extérieure 8b peut renfermer des pigments colorés 9 (voir figure 2) ou peut être appliquée par sérigraphie si l'on veut former un motif ou un décor sur la surface de la semelle 1.At least the outer layer 8b can contain colored pigments 9 (see FIG. 2) or can be applied by screen printing if a pattern or a decoration is to be formed on the surface of the sole 1.

On a constaté par ailleurs que le revêtement d'émail 8 n'avait, compte tenu de sa minceur, aucune influence néfaste sur la conductibilité thermique de la semelle. Ainsi, il est inutile de charger ce revêtement d'émail de particules conductrices.It was also found that the enamel coating 8 had, taking into account its thinness, no harmful influence on the thermal conductivity of the sole. Thus, there is no need to load this enamel coating with conductive particles.

Pour remédier aux difficultés posées par le phénomène de micro-bullage évoqué ci-dessus, on peut utiliser, pour réaliser la semelle, une tôle d'alliage d'aluminium laminée.To remedy the difficulties posed by the micro-bubbling phenomenon mentioned above, it is possible to use a sheet of laminated aluminum alloy to make the sole.

Les figures 3 et 4 décrivent deux exemples de semelle de fer à repasser utilisant une tôle d'alliage d'aluminium laminée.Figures 3 and 4 describe two examples of iron soleplate using a laminated aluminum alloy sheet.

Dans la réalisation de la figure 3, la tôle d'alliage laminée la est assemblée avec une partie supérieure 1b réalisée par injection, comme dans le cas de la réalisation selon la figure 1. Cet assemblage peut être effectué par exemple par frappe à chaud.In the embodiment of FIG. 3, the laminated alloy sheet 1a is assembled with an upper part 1b produced by injection, as in the case of the embodiment according to FIG. 1. This assembly can be carried out for example by hot stamping.

Le revêtement d'émail 8c appliqué sur la surface de la tôle d'alliage d'aluminium la peut être obtenu à partir d'une composition d'émail classique pour aluminium, frittable à une température comprise entre 500 et 600°C. Il conviendrait bien entendu que l'ensemble supporte cette température.The enamel coating 8c applied to the surface of the aluminum alloy sheet 1a can be obtained from a conventional enamel composition for aluminum, sinterable at a temperature between 500 and 600 ° C. It would of course be appropriate for the assembly to withstand this temperature.

Dans la réalisation de la figure 4, la semelle comprend également une tôle d'alliage d'aluminium 1c comprenant un revêtement d'émail 8d.In the embodiment of Figure 4, the sole also comprises an aluminum alloy sheet 1c comprising an enamel coating 8d.

Sur la face de cette tôle le opposée à celle portant le revêtement d'émail 8d, est appliquée une résistance plate 10, enrobée dans une matière isolante. Cette résistance plate 10 est pressée contre la tôle 1c au moyen d'une contreplaque 11, grâce à un sertissage 12 pratiqué le long des bords de la tôle 1c.On the face of this sheet opposite to that carrying the enamel coating 8d, is applied a flat resistor 10, coated in an insulating material. This flat resistor 10 is pressed against the sheet 1c by means of a backing plate 11, by means of a crimping 12 carried out along the edges of the sheet 1c.

Bien entendu, l'invention n'est pas limitée aux exemples que l'on vient de décrire, et on peut apporter à ceux-ci de nombreuses modifications sans sortir du cadre de l'invention.Of course, the invention is not limited to the examples just described, and many modifications can be made to them without departing from the scope of the invention.

Ainsi, l'invention s'applique également aux semelles de fers à repasser en fonte de fer.Thus, the invention also applies to the soles of irons in cast iron.

Par ailleurs, le revêtement d'émail 8, 8a, 8b, 8c pourrait également être appliqué sur les faces latérales de la semelle.Furthermore, the enamel coating 8, 8a, 8b, 8c could also be applied to the lateral faces of the sole.

D'autre part, le revêtement d'émail pourrait également recouvrir l'intérieur des chambres de vaporisation et de distribution de la vapeur 4, 5. Dans ce cas, le dépôt de tartre ou de calcaire dans ces chambres présenterait une adhérence réduite et pourrait donc être enlevé plus facilement que dans les semelles classiques.On the other hand, the enamel coating could also cover the interior of the vaporization and steam distribution chambers 4, 5. In this case, the deposit of tartar or lime in these chambers would have reduced adhesion and could therefore be removed more easily than in conventional soles.

Claims (9)

1. Semelle (1) de fer à repasser, notamment à vapeur, caractérisée en ce qu'au moins sa surface (7) destinée à être appliquée sur les articles à repasser est recouverte par un revêtement d'émail(8, 8a, 8b, 8c, 8d).1. Sole (1) of iron, in particular steam, characterized in that at least its surface (7) intended to be applied to the articles to be ironed is covered by an enamel coating (8, 8a, 8b , 8c, 8d). 2. Semelle conforme à la revendication 1, caractérisée en ce qu'elle est réalisée en alliage d'aluminium moulé.2. Sole according to claim 1, characterized in that it is made of cast aluminum alloy. 3. Semelle conforme à la revendication 1, caractérisée en ce qu'elle comprend une tôle (la, lc) d'alliage d'aluminium laminée.3. Sole according to claim 1, characterized in that it comprises a sheet (la, lc) of laminated aluminum alloy. 4. Semelle conforme à la revendication 2, caractérisée en ce que l'alliage d'aluminium renferme du silicium.4. Sole according to claim 2, characterized in that the aluminum alloy contains silicon. 5. Semelle conforme à la revendication 2, caractérisée en ce que l'émail (8) est obtenue à partir d'une composition de fritte d'émail frittable à une température inférieure à 500°C.5. Sole according to claim 2, characterized in that the enamel (8) is obtained from a sintered enamel frit composition at a temperature below 500 ° C. 6. Semelle conforme à l'une des revendications 1. à 5, caractérisée en ce que le revêtement d'émail comprend deux couches (8a, 8b), au moins la couche extérieure (8b) renfermant des pigments de coloration.6. Sole according to one of claims 1 to 5, characterized in that the enamel coating comprises two layers (8a, 8b), at least the outer layer (8b) containing coloring pigments. 7. Semelle conforme à l'une des revendications 1 à 6, caractérisée en ce que la surface (7) de la semelle (1) est abrasée, mais non polie.7. Sole according to one of claims 1 to 6, characterized in that the surface (7) of the sole (1) is abraded, but not polished. 8. Semelle conforme à l'une des revendications 1 à 7, caractérisée en ce que la surface de la semelle comporte une sous-couche d'accrochage du revêtement d'émail (8), cette sous-couche étant réalisée par chromatation.8. Sole according to one of claims 1 to 7, characterized in that the surface of the sole has a bonding undercoat of the enamel coating (8), this undercoat being produced by chromating. 9. Fer à repasser comportant une semelle conforme à l'une des revendications 1 à 8.9. Iron comprising a soleplate according to one of claims 1 to 8.
EP19860400913 1985-05-02 1986-04-24 Iron sole plate covered by an enamel coating Expired - Lifetime EP0200647B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400913T ATE46376T1 (en) 1985-05-02 1986-04-24 IRON PLATE COVERED WITH A LAYER OF ENAMEL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8506684 1985-05-02
FR8506684A FR2581402B1 (en) 1985-05-02 1985-05-02 IRON SOLE COVERED BY AN EMAIL COATING

Publications (3)

Publication Number Publication Date
EP0200647A1 true EP0200647A1 (en) 1986-11-05
EP0200647B1 EP0200647B1 (en) 1989-09-13
EP0200647B2 EP0200647B2 (en) 1996-03-27

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US (1) US4822686A (en)
EP (1) EP0200647B2 (en)
JP (1) JPS61263500A (en)
AT (1) ATE46376T1 (en)
AU (1) AU579011B2 (en)
CA (1) CA1269037A (en)
DE (1) DE3665615D1 (en)
ES (1) ES8801717A1 (en)
FR (1) FR2581402B1 (en)

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FR2641553A1 (en) * 1989-01-11 1990-07-13 Seb Sa EMBOSSED IRON SOLE
US4959256A (en) * 1987-12-30 1990-09-25 Seb S.A. Enamel coating charged with glass beads for the bottom of cooking utensils and utensils coated in this manner
EP0457689A1 (en) * 1990-05-18 1991-11-21 Seb S.A. Iron sole plate with a friction reducing coating
EP0854226A1 (en) * 1997-01-21 1998-07-22 Oficina De Investigacion Agrupada, S.A. Improvements in processes for obtaining steam iron soles
EP0869215A1 (en) * 1997-03-25 1998-10-07 Krainel, S.A. Clothes iron sole
RU2501899C2 (en) * 2008-05-16 2013-12-20 Конинклейке Филипс Электроникс Н.В. Iron comprising plate of stainless steel with coating and method of its manufacturing

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DE3918824A1 (en) * 1988-08-25 1990-03-08 Braun Ag IRON SOLE
FR2662189A1 (en) * 1990-05-18 1991-11-22 Seb Sa IRON IRON WITH AN INSOLE COVERED BY ANTI-ADHESIVE COATING.
DE4316280C2 (en) * 1993-05-14 2002-12-12 Bsh Bosch Siemens Hausgeraete Electrical heat treatment device with a worktop
BE1007457A3 (en) * 1993-08-23 1995-07-04 Philips Electronics Nv Iron with sliding low.
BE1008961A3 (en) * 1994-11-14 1996-10-01 Philips Electronics Nv IRON WITH SLIDE LAYER.
FR2743578B1 (en) * 1996-01-17 1999-06-11 Moulinex Sa IRON SOLE
EP0998604B2 (en) * 1996-09-24 2008-01-16 Koninklijke Philips Electronics N.V. Iron and soleplate for an iron
US5937552A (en) * 1997-01-10 1999-08-17 Hp Intellectual Corp. Iron soleplate with a soleplate bottom cover
DE602004031007D1 (en) * 2003-04-25 2011-02-24 Koninkl Philips Electronics Nv COATING FOR STEAM GENERATING DEVICE
ES2278539B1 (en) * 2006-01-31 2008-07-16 Celaya, Emparanza Y Galdos, Internacional, S.A. SOLE OF IRON AND IRON THAT CONTAINS IT.
JP5208771B2 (en) * 2006-02-23 2013-06-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Iron shoe
ES2366512B1 (en) * 2009-10-09 2012-09-06 Bsh Electrodomésticos España, S.A. IRON SOLE, IN SPECIAL, FOR A STEAM IRON.
CN101962907B (en) * 2010-09-03 2012-05-16 沙建岳 Base of steam iron and preparation method thereof
ES2387962B1 (en) 2010-10-22 2013-08-20 Bsh Electrodomésticos España, S.A. Procedure for applying color graphics on an iron sole, especially for a steam 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
FR3029543B1 (en) * 2014-12-08 2017-07-07 Seb Sa IRON COMPRISING A BODY AND A PLATE OF METAL SOLE REPORTED AGAINST THE BODY
FR3049962B1 (en) 2016-04-08 2019-05-03 Bernard Louison STEEL IRON INSOLE WITH STEAM
FR3093114B1 (en) 2019-02-22 2021-03-05 Bernard Louison STEAM IRON SOLE

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FR575630A (en) * 1924-01-10 1924-08-02 Appliance for ironing laundry, clothing, fabrics, etc.
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US3333955A (en) * 1964-09-30 1967-08-01 Int Nickel Co Aluminum alloy and sole plate for electric iron and the like made therefrom
DE1952846A1 (en) * 1969-10-21 1971-04-29 Licentia Gmbh Iron sole
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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
DE2616286A1 (en) * 1976-04-13 1977-10-27 Baumgartner IRON SOLE
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US1376242A (en) * 1920-03-09 1921-04-26 Fritz L Ast Flatiron
FR575630A (en) * 1924-01-10 1924-08-02 Appliance for ironing laundry, clothing, fabrics, etc.
DE529412C (en) * 1926-04-16 1931-07-13 Berta Beck Geb Bienz Electrical ironing plate manufactured according to the method of patent 452275
FR57460E (en) * 1947-07-22 1953-01-28 Thomson Houston Comp Francaise Improvements to electric irons
US3333955A (en) * 1964-09-30 1967-08-01 Int Nickel Co Aluminum alloy and sole plate for electric iron and the like made therefrom
DE1952846A1 (en) * 1969-10-21 1971-04-29 Licentia Gmbh Iron sole
FR2289627A1 (en) * 1974-10-31 1976-05-28 Sitram Improved enamel for aluminium used in cooking utensils - produced by adding quartz powder to the enamel frit
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
DE2616286A1 (en) * 1976-04-13 1977-10-27 Baumgartner IRON SOLE
US4460630A (en) * 1978-03-15 1984-07-17 Matsushita Electric Industrial Co., Ltd. Method of forming porcelain enamels on aluminized steel
EP0127489A1 (en) * 1983-04-15 1984-12-05 Seb S.A. Method of enamelling the bottom of a cooking vessel, and such a cooking vessel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959256A (en) * 1987-12-30 1990-09-25 Seb S.A. Enamel coating charged with glass beads for the bottom of cooking utensils and utensils coated in this manner
FR2641553A1 (en) * 1989-01-11 1990-07-13 Seb Sa EMBOSSED IRON SOLE
EP0378479A1 (en) * 1989-01-11 1990-07-18 Seb S.A. Enamelled iron sole plate
EP0457689A1 (en) * 1990-05-18 1991-11-21 Seb S.A. Iron sole plate with a friction reducing coating
FR2662188A1 (en) * 1990-05-18 1991-11-22 Seb Sa IRON IRONING WITH AN INSOLE COVERED BY A COATING REDUCING FRICTION.
US5165184A (en) * 1990-05-18 1992-11-24 Seb S.A. Ironing device sole-plate with coated ribs
EP0854226A1 (en) * 1997-01-21 1998-07-22 Oficina De Investigacion Agrupada, S.A. Improvements in processes for obtaining steam iron soles
EP0869215A1 (en) * 1997-03-25 1998-10-07 Krainel, S.A. Clothes iron sole
RU2501899C2 (en) * 2008-05-16 2013-12-20 Конинклейке Филипс Электроникс Н.В. Iron comprising plate of stainless steel with coating and method of its manufacturing

Also Published As

Publication number Publication date
AU5677686A (en) 1986-11-06
ES8801717A1 (en) 1988-02-16
DE3665615D1 (en) 1989-10-19
CA1269037A (en) 1990-05-15
EP0200647B2 (en) 1996-03-27
FR2581402A1 (en) 1986-11-07
JPS6344400B2 (en) 1988-09-05
ATE46376T1 (en) 1989-09-15
JPS61263500A (en) 1986-11-21
ES554552A0 (en) 1988-02-16
AU579011B2 (en) 1988-11-10
EP0200647B1 (en) 1989-09-13
FR2581402B1 (en) 1988-03-25
US4822686A (en) 1989-04-18

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