FR2553029A1 - Article, which can be thermoformed under pressure, having an incorporated electrical-heating body, and method for manufacturing this article - Google Patents

Article, which can be thermoformed under pressure, having an incorporated electrical-heating body, and method for manufacturing this article Download PDF

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Publication number
FR2553029A1
FR2553029A1 FR8315963A FR8315963A FR2553029A1 FR 2553029 A1 FR2553029 A1 FR 2553029A1 FR 8315963 A FR8315963 A FR 8315963A FR 8315963 A FR8315963 A FR 8315963A FR 2553029 A1 FR2553029 A1 FR 2553029A1
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FR
France
Prior art keywords
support
article
sheet
thermoformable
metal sheet
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.)
Pending
Application number
FR8315963A
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French (fr)
Inventor
Jacques Trinchet
Herve Fugier
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Allibert SA
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Allibert SA
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Filing date
Publication date
Application filed by Allibert SA filed Critical Allibert SA
Priority to FR8315963A priority Critical patent/FR2553029A1/en
Publication of FR2553029A1 publication Critical patent/FR2553029A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole of the foot
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/738—Thermoformability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/036—Heaters specially adapted for garment heating

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The article comprises a support 25 made from polyolefin foam, such as in particular a polyethylene foam, and a resistive circuit formed from a thin metal sheet adhesively bonded to the said support. The invention is particularly applicable to the production of inner thermoformable soles for shoes.

Description

L'invention a pour objet des articles thermoformables sous pression à corps de chauffe électrique incorporé et un procédé de fabrication de tels articles. The subject of the invention is thermoformable articles under pressure with incorporated electric heating body and a method for manufacturing such articles.

On connaît des articles thermoformables sous pression à corps de chauffe électrique incorporé formé par un circuit électrique résistant appliqué au contact dudit article. De tels articles sont notamment utilisés pour constituer des semelles thermoformables pour chaussures de sport ou de ski permettant l'adaptation et la conformation parfaite de l'intérieur de la chaussure au pied de l'utilisateur. Pour ce faire il suffit au moment de la première utilisation de chauffer la semelle thermoformable à la température adéquate permettant à la matière de la semelle de fluer aux endroits voulus en épousant étroitement le pied. There are known thermoformable articles under pressure with incorporated electric heating body formed by a resistant electrical circuit applied in contact with said article. Such articles are used in particular to constitute thermoformable soles for sports or ski boots allowing the adaptation and the perfect conformation of the interior of the boot at the foot of the user. To do this, it is sufficient at the time of the first use to heat the thermoformable sole to the appropriate temperature allowing the material of the sole to creep in the desired places by closely hugging the foot.

D'autres applications de tels articles peuvent être envisagées, et notamment chaque fois que l'on veut qu'un corps logé à l'intérieur d'un boîtier de volume plus grand puisse Autre convenablement maintenu et soutenu à l'intérieur du bottier. Other applications of such articles can be envisaged, and in particular whenever it is desired that a body housed inside a larger volume case can be suitably maintained and supported inside the case.

L'article thermoformable sous pression à corps de chauffe électrique incorporé conforme à l'invention se caractérise en ce qu'il comprend un support en mousse de polyoléfine thermoformable, telle notamment qu'un polyéthylène et un circuit résistif formé d'une feuille métallique mince collée sur ledit support, telle qu'une feuille d'aluminium. The thermoformable article under pressure with incorporated electric heating body according to the invention is characterized in that it comprises a support in thermoformable polyolefin foam, such as in particular a polyethylene and a resistive circuit formed by a thin metallic sheet. glued to said support, such as aluminum foil.

De façon exemplaire, ledit support est constitué par une feuille de polyéthylène de densité voisine de 33 Kg/m3.  In an exemplary manner, said support is constituted by a polyethylene sheet with a density close to 33 Kg / m3.

L'avantage d'un tel article thermoformable est que sa fabrication est simplifiée, qu' il peut être facilement fabriqué en grande série avec les avantages de fiabilités dans la qualité et de prix de revient abaissé de l'article. The advantage of such a thermoformable article is that its manufacture is simplified, that it can be easily mass produced with the advantages of reliability in quality and lower cost price of the article.

L'invention se rapporte également à un procédé de fabrication d'un tel article, caractérisé en ce qu'on procède dans l'ordre aux opérations suivantes
- on colle sur une face du support en mousse thermoformable une feuille métallique mince d'aluminium ou analogue,
- on recouvre la feuille métallique par un procédé sérigraphique d'un cache ou masque recouvrant le métal tout le long du trajet électrique résistif,
- on attaque le film mdtallpeaumoyen d'un agent chimique susceptible de l'attaquer et vis-à-vis duquel le masque est sensiblement inerte,
- on élimine les traces d'agent chimique d'attaque.The invention also relates to a method of manufacturing such an article, characterized in that the following operations are carried out in order
- a thin metal foil of aluminum or the like is bonded to one face of the thermoformable foam support,
the metallic sheet is covered by a screen printing process with a mask or mask covering the metal all along the resistive electrical path,
- the mdtallpeaumoyen film is attacked with a chemical agent capable of attacking it and vis-à-vis which the mask is substantially inert,
- traces of chemical attack agent are eliminated.

Pour effectuer le collage, on utilise de préférence une colle de liaison du type réactivable à deux composants déposée sur la feuille métallique avant réactivation et mise en contact avec la feuille support. To carry out the bonding, a bonding adhesive of the reactivable type with two components is preferably used, deposited on the metal sheet before reactivation and brought into contact with the support sheet.

D'autres caractéristiques objets et avantages de l'invention apparaîtront plus clairement à l'aide de la description qui va suivre faite en référence aux dessins annexés dans lesquels
- la figure 1 est un schéma illustrant un procédé de traitement appliqué de préférence à la feuille support avant qu'elle ne soit encollée à la feuille métallique,
- la figure 2 illustre schématiquement le procédé d'encollage permettant la réunion de la feuille métallique et du support,
- la figure 3 montre en vue par dessus l'aspect présenté par l'article avec le chemin résistif métallique déposé sur la feuille support, l'article constituant une paire de semelles pour chaussures.Other features and advantages of the invention will appear more clearly with the aid of the description which follows, given with reference to the appended drawings in which
FIG. 1 is a diagram illustrating a treatment method preferably applied to the support sheet before it is glued to the metal sheet,
FIG. 2 schematically illustrates the gluing process allowing the metal sheet and the support to be united,
- Figure 3 shows in top view the appearance presented by the article with the metal resistive path deposited on the support sheet, the article constituting a pair of soles for shoes.

On décrira maintenant un procédé de fabrication d'articles thermoformablesà corps de chauffe électrique incoporé conforme à l'invention. We will now describe a process for manufacturing thermoformable articles with an incorporated electric heating body according to the invention.

Comme mentionné précédemment, on réunit par collage un support en mousse de polyoléfine tel notamment qu'un polyéthylène et une feuille métallique mince, avantageusement d'aluminium. As mentioned above, a support made of polyolefin foam such as polyethylene and a thin metal sheet, advantageously aluminum, is bonded together.

Dans un exemple d'application destiné à constituer des semelles thermoformables intérieures pour chaussures, on utilise comme support une feuille de polyéthylène de densité voisine de 33 Kg/m3 présentant une épaisseur par exemple de 2 millimètres et demi. Cette feuille de polyéthylène peut être obtenue par exemple par refendage d'une plaque de polyéthylène de 5 millimètres obtenue par extrusion. Dans ce cas, la feuille refendue présente un côté lisse dit dans la technique "peau". C'est sur le côté "peau" du support que l'on collera de préférence la feuille métallique afin d'obtenir une meilleure liaison. In an example of an application intended to constitute thermoformable inner soles for shoes, a polyethylene sheet of density close to 33 Kg / m3 is used as support, having a thickness for example of 2 and a half millimeters. This polyethylene sheet can be obtained for example by slitting a 5-millimeter polyethylene plate obtained by extrusion. In this case, the split sheet has a smooth side called in the "skin" technique. It is on the "skin" side of the support that the metal sheet will preferably be glued in order to obtain a better bond.

Avantageusement cependant avant de procéder au collage, on procédera à un traitement supplémentaire de la feuille comme illustré à la figure 1, de façon à "durcir" la peau. Pour ce faire on utilisera par exemple un traitement dit "corona" dans lequel la peau est soumise à un arc électrique entre l'électrode de traitement et la masse. Advantageously, however, before proceeding to bonding, an additional treatment of the sheet will be carried out as illustrated in FIG. 1, so as to "harden" the skin. To do this, for example, a so-called "corona" treatment will be used in which the skin is subjected to an electric arc between the treatment electrode and the mass.

En se reportant à la figure 1 on a illustré un tel traitement. La feuille de polyéthylène est dérouléeàpartir d'un cylindre 1 et passe, après un cylindre de renvoi 2 sur le cylindre de traitement 3 entre une électrode externe 4 et une électrode 5 reliée à la masse qui peut être formée par l'axe du cylindre 3. Les électrodes 4,5 sont reliées à une source d'énergie électrique réglable dont la tension et la densité sont ajustées en fonction de la densité,de l'épaisseur de la feuille du matériau à traiter et également de la vitesse de défilement de la feuille devant l'électrode 4. La feuille traitée est ensuite reprise sur un rouleau de reprise 6 après passage sur les rouleaux de renvoi 7,8. Referring to Figure 1 there is illustrated such treatment. The polyethylene sheet is unwound from a cylinder 1 and passes, after a return cylinder 2 on the treatment cylinder 3 between an external electrode 4 and an electrode 5 connected to the ground which can be formed by the axis of the cylinder 3 The electrodes 4,5 are connected to an adjustable source of electrical energy, the voltage and density of which are adjusted as a function of the density, of the thickness of the sheet of material to be treated and also of the speed of travel of the sheet in front of the electrode 4. The treated sheet is then taken up on a take-up roller 6 after passing over the return rollers 7,8.

Pour assurer le collage de la feuille métallique, par exemple d'aluminium sur la feuille support en mousse thermoplastique, on procède avantageusement comme illustré à la figure 2. Un rouleau de feuille d'aluminium 9 est déroulé de façon à passer après renvoi sur des cylindres 10,11 entre deux cylindres 12, 13, le cylindre 12 trempant dans de la colle qui assurera la liaison entre la feuille d'aluminium et le support. L'épaisseur de la couche de colle est réglée au moyen d'une racle ou d'un cylindre racleur 14. To ensure the bonding of the metal sheet, for example of aluminum on the support sheet of thermoplastic foam, the procedure is advantageously as illustrated in FIG. 2. A roll of aluminum sheet 9 is unwound so as to pass after returning to cylinders 10,11 between two cylinders 12, 13, the cylinder 12 dipping in glue which will ensure the connection between the aluminum foil and the support. The thickness of the adhesive layer is adjusted by means of a doctor blade or a scraper cylinder 14.

A titre de colle on utilise avantageusement une colle du type polyuréthane à deux composants réactivable à chaud. L'enduction de colle est avantageusement réglée de façon qu'on ait un film de 15 grammes de colle environ par m2 de surface d'application (poids de la colle à sec). As an adhesive, an adhesive of the polyurethane type with two components which can be reactivated hot is advantageously used. The adhesive coating is advantageously adjusted so that there is a film of approximately 15 grams of adhesive per m2 of application surface (weight of the adhesive dry).

Après passage entre les rouleaux 12,13, la colle est séchée sur le parcours 15 avant de pénétrer en étant guidée par le rouleau 16 à l'intérieur d'un four 17 de réactivation. A la sortie du four 17 la feuille d'aluminium revêtue du film de colle chauffé est guidée par le cylindre 18 entre les deux rouleaux 19, 20 de calendrage du produit composite. Entre les rouleaux 19,20 estconduite la feuille 21 du support de mousse qui est déroulée à partir du rouleau de stockage 22 en présentant son côté "peau" 23 vers la feuille d'aluminium encollée comme mentionné ci-dessus. A la sortie des rouleaux de calandrage 19,20 on enroule et reprend sur un tambour 24 la feuille composite. After passing between the rollers 12, 13, the glue is dried on the path 15 before entering, being guided by the roller 16 inside a reactivation oven 17. At the outlet of the oven 17, the aluminum sheet coated with the heated adhesive film is guided by the cylinder 18 between the two rollers 19, 20 for calendering the composite product. Between the rollers 19, 20 is led the sheet 21 of the foam support which is unwound from the storage roller 22 with its "skin" side 23 towards the aluminum sheet glued as mentioned above. At the outlet of the calendering rollers 19.20, the composite sheet is wound and taken up on a drum 24.

Le film d'aluminium utilisé est avantageusement un film recuit d'une épaisseur d'environ 50 microns donnant les résultats les plus satisfaisants. The aluminum film used is advantageously an annealed film with a thickness of approximately 50 microns giving the most satisfactory results.

De façon à former sur le support composite le chemin résistif désiré, on procède ensuite par un procédé sérigraphique à la pose, côté métallique, d'un masque formé par une encre sérigraphique et dessinant le chemin résistif désiré. A la figure 3 on aperçoit une feuille de support 25 sur laquelle on a appliqué une encre sérigraphique en dessinant deux chemins continus 25,27 contenus à l'intérieur de la surface d'une semelle gauche et droite de chaussure
Après déposede l'encre sérigraphique selon les trajets 26,27 dessinés, on peut attaquer la feuille d'aluminium déposée sur le support 25 là où l'encre est absente, en attaquant par exemple la feuille d'aluminium par du perdiorure de fer qui n'attaque pas l'encre sérigraphique et quidissout par contre le film d'aluminium là où il n'a pas été protégé par le masque. On obtient ainsi comme illustré à la figure 3 une feuille de support 25 comportant sous le cache d'encre sérigraphique une feuille d'aluminSum découpée exactement selon le traient du dessin.In order to form the desired resistive path on the composite support, a screen printing process is then carried out, on the metal side, of a mask formed by a screen printing ink and drawing the desired resistive path. In FIG. 3 we see a support sheet 25 on which a screen printing ink has been applied by drawing two continuous paths 25, 27 contained inside the surface of a left and right shoe sole
After depositing the screen printing ink along the paths 26, 27 drawn, the aluminum sheet deposited on the support 25 can be attacked where the ink is absent, for example by attacking the aluminum sheet with iron perdiorure which does not attack the screen printing ink and does dissolve, on the other hand, the aluminum film where it has not been protected by the mask. As shown in FIG. 3, a support sheet 25 is thus obtained comprising, under the screen printing ink cover, an aluminSum sheet cut exactly according to the drawing.

On peut à volonté soit éliminer le film sérigraphique, par exemple par lavage au moyen d'un solvant cétonique, soit de préférence laisser subsister le film sérigraphique qui protège le film d'aluminium sousjacent. It is possible either to remove the screen printing film, for example by washing with a ketone solvent, or preferably to leave the screen printing film which protects the underlying aluminum film.

Cependant dans ce cas, il est nécessaire que le film sérigraphique ait des qualités de souplesse particulièrespour ne pas se rompre lorsque la semelle viendra à être pliée notamment au moment de son introduction dans la chaussure. A cet effet, au moment où l'on dépose le masque sérigraphique, on dilue avantageusement l'encre sérigraphique en augmentant très notablement les quantités de catalyseur par rapport aux quantités minimales normalement utilisées. However, in this case, it is necessary for the screen printing film to have particular flexibility qualities in order not to break when the sole comes to be folded, in particular at the time of its introduction into the shoe. To this end, when the screen printing mask is deposited, the screen printing ink is advantageously diluted by very significantly increasing the amounts of catalyst compared to the minimum amounts normally used.

De ce fait, on obtient un film d'encre sérigraphique extrêmement mince, par exemple d'une épaisseur de 0,2 micron (au lieu de 2 microns habituellement) qui présente une souplesse accrue et ne risque donc pas de se rompre.As a result, an extremely thin screen printing ink film is obtained, for example with a thickness of 0.2 microns (instead of usually 2 microns) which has increased flexibility and therefore does not risk breaking.

De façon à éviter le vieillissement du produit, on élimine très soigneusement toutes les traces de produit chimique et notamment d'agent chimique d'attaque du film métallique et éventuellement d'agent chimique d'attaque du film sérigraphique, ceci pouvant se faire avantageusement par mise sous cloche à vide des articles aprs fabrication. In order to avoid aging of the product, all traces of chemical product and in particular of chemical agent for attacking the metal film and possibly chemical agent for attacking the screen printing film are very carefully removed, this being advantageously possible by vacuum packing of articles after manufacture.

Bien entendu l'invention n'est nullement limitée au mode de réalisation illustré et décrit. Of course, the invention is in no way limited to the embodiment illustrated and described.

C'est ainsi qu'à la place du film d'aluminium recuit on peut utiliser un film d'aluminium écroui ou un film de cuivre. Thus, instead of the annealed aluminum film, a work hardened aluminum film or a copper film can be used.

De même, au lieu d'utiliser un traitement corona pour durcir le côté peau de la mousse de polyoléfine utilisée, on peut utiliser d'autres techniques de durcissemment tel que le "flammage" consistant à passer le film côté peau devant une flamme à intensité et distance convenablement réglées
De même la qualité du support peut être variable et notamment la densité de la mousse ou même sa nature suivant les applications de l'article et le résultat que l'on veut finalement obtenir d'un article plus ou moins souple ou plus ou moins résistant. Similarly, instead of using a corona treatment to harden the skin side of the polyolefin foam used, it is possible to use other hardening techniques such as "flaming" consisting in passing the film side skin in front of an intense flame. and distance suitably set
Likewise, the quality of the support can be variable and in particular the density of the foam or even its nature depending on the applications of the article and the result which we ultimately want to obtain from an article which is more or less flexible or more or less resistant. .

Claims (10)

REVENDICATIONS 1. Article thermoformable sous pression à corps de chauffe électrique incorporé formé par un circuit électrique résistant appliqué au contact dudit article caractérisé en ce qu'il comprend  1. Thermoformable article under pressure with incorporated electric heating body formed by a resistant electrical circuit applied in contact with said article characterized in that it comprises - un support en mousse de polyoléfine thermoformable, telle notamment qu'un polyéthylène, a support made of thermoformable polyolefin foam, such as in particular a polyethylene, - et un circuit résistif formé d'une feuille métallique mince collée sur ledit support, telle qu'une feuille d'aluminium. - And a resistive circuit formed of a thin metal sheet bonded to said support, such as an aluminum sheet. 2. Article thermoformable selon la revendication 1 caractérisé en ce que ledit support est une feuille de polyéthylène de densité voisine de 33 Kg/m3. 2. thermoformable article according to claim 1 characterized in that said support is a polyethylene sheet of density close to 33 Kg / m3. 3. Article thermoformable selon la revendication î ou la revendication 2 caractérisé en ce que ledit article se présente sous la forme d'une semelle intérieure pour chaussures. 3. thermoformable article according to claim 1 or claim 2 characterized in that said article is in the form of an insole for shoes. 4. Procédé de fabrication d'un article thermoformable selon l'une des revendications précédentes caractérisé en ce que 4. Method for manufacturing a thermoformable article according to one of the preceding claims, characterized in that - on colle sur une face (23) du support en mousse thermoformable (21) une feuille métallique mince d'aluminium ou analogue (15), on recouvre la feuille métallique par un procédé sérigraphique d'un cache ou d'un masque (26,27) recouvrant le métal tout le long du trajet électrique résistif, - A thin metal foil of aluminum or the like (15) is bonded to a face (23) of the thermoformable foam support (21), the metal foil is covered by a screen printing process with a mask or a mask (26 , 27) covering the metal along the resistive electrical path, - on attaque le film métallique au moyen d'un agent chimique suseeptible de l'attaquer et vis-à-vis duquel le masque est sensiblement inerte, the metallic film is attacked by means of a chemical agent capable of attacking it and vis-à-vis which the mask is substantially inert, - on élimine les traces d'agent chimique d'attaque. - traces of chemical attack agent are eliminated. 5. Procédé selon la revendication 4 caractérisé en ce quon effectue préalablement au collage de la feuille métallique sur le support un traitement de surface de la face du support qui recevra la feuille métallique, tel qu'un traitement Coron (4,5) améliorant l'adhérence de la colle de liaison entre support et feuille métallique. 5. Method according to claim 4 characterized in that prior to bonding the metal sheet to the support is carried out a surface treatment of the face of the support which will receive the metal sheet, such as a Coron treatment (4,5) improving the adhesion of the bonding adhesive between support and metal sheet. 6. Procédé selon la revendication 4 ou la revendication 5 caractérisé en ce qu'on utilise comme colle de liaison une colle réactivable à deux composants déposée sur la feuille métallique (15) avant réactivation et mise en contact avec la feuille support (21). 6. Method according to claim 4 or claim 5 characterized in that one uses as bonding adhesive a reactivable adhesive with two components deposited on the metal sheet (15) before reactivation and brought into contact with the support sheet (21). 7. Procédé selon l'une des revendications 4 à 6 caractérisé en qu'on utilise comme feuille métallique une feuille d'aluminium recuit 7. Method according to one of claims 4 to 6 characterized in that an annealed aluminum foil is used as the metallic sheet. 8. Procédé selon l'une des revendications 4 à 7 caractérisé en ce qu'on mélange à l'encre sérigraphique un catalyseur en augmentant très notablement les quantités de catalyseur par rapport aux quantités minimales normalement utilisées. 8. Method according to one of claims 4 to 7 characterized in that a catalyst is mixed with screen printing ink by very significantly increasing the amounts of catalyst compared to the minimum amounts normally used. 9. Procédé selon l'une des revendications 4 à 8 caractérisé en ce qu'on élimine le masque (26,27) après attaque de la feuille métallique par lavage au moyen d'un solvant par exemple cétonique. 9. Method according to one of claims 4 to 8 characterized in that the mask (26,27) is removed after attacking the metal sheet by washing with a solvent, for example ketone. 10. Procédé selon l'une des revendications 4 à 9 caractérisé en ce qu'après fabrication de l'article on le maintient un certain temps sous croche à vide.  10. Method according to one of claims 4 to 9 characterized in that after manufacture of the article it is maintained for a certain time under an open hook.
FR8315963A 1983-10-07 1983-10-07 Article, which can be thermoformed under pressure, having an incorporated electrical-heating body, and method for manufacturing this article Pending FR2553029A1 (en)

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FR8315963A FR2553029A1 (en) 1983-10-07 1983-10-07 Article, which can be thermoformed under pressure, having an incorporated electrical-heating body, and method for manufacturing this article

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665815A1 (en) * 1989-01-03 1992-02-14 Balzano Alfiero Heating member with flexible circuit for gloves and shoes
AT1701U1 (en) * 1996-08-09 1997-10-27 Fancyform Design Engineering INNER SHOE, ESPECIALLY FOR SKI SHOES, MOUNTAIN SHOES OR THE LIKE.
EP0805193A1 (en) * 1996-04-29 1997-11-05 HAWE NEOS DENTAL Dr. H. V. WEISSENFLUH AG Method for bonding a metal sheet with a plastic film
EP0948271A1 (en) * 1996-10-01 1999-10-13 Perfect Impression Footwear Company Custom-fitting footwear

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Publication number Priority date Publication date Assignee Title
US3813315A (en) * 1968-12-18 1974-05-28 Valyi Emery I Method of laminating plastic to metal
US3946193A (en) * 1973-11-15 1976-03-23 Giese Erik O Heated inner sole and battery case for use in boot construction
EP0004829A2 (en) * 1978-04-06 1979-10-17 Lange International S.A. Process for fitting an article of dress or accessory to a part of the human body and article or accessory for carrying out the process
GB2050705A (en) * 1977-06-03 1981-01-07 Angstrohm Precision Inc Metal foil resistor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813315A (en) * 1968-12-18 1974-05-28 Valyi Emery I Method of laminating plastic to metal
US3946193A (en) * 1973-11-15 1976-03-23 Giese Erik O Heated inner sole and battery case for use in boot construction
GB2050705A (en) * 1977-06-03 1981-01-07 Angstrohm Precision Inc Metal foil resistor
EP0004829A2 (en) * 1978-04-06 1979-10-17 Lange International S.A. Process for fitting an article of dress or accessory to a part of the human body and article or accessory for carrying out the process

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665815A1 (en) * 1989-01-03 1992-02-14 Balzano Alfiero Heating member with flexible circuit for gloves and shoes
EP0805193A1 (en) * 1996-04-29 1997-11-05 HAWE NEOS DENTAL Dr. H. V. WEISSENFLUH AG Method for bonding a metal sheet with a plastic film
US5951801A (en) * 1996-04-29 1999-09-14 Hawe Neos Dental Dr. H. V. Weissenfluh Ag Method for joining a metal foil with a foil of a synthetic material
AT1701U1 (en) * 1996-08-09 1997-10-27 Fancyform Design Engineering INNER SHOE, ESPECIALLY FOR SKI SHOES, MOUNTAIN SHOES OR THE LIKE.
EP0824874A2 (en) * 1996-08-09 1998-02-25 Fancyform Design Engineering Entwicklungs- und Vertriebs GmbH Innerboot, in particular for skibooth or mountainboots
EP0824874A3 (en) * 1996-08-09 1999-01-13 Fancyform Design Engineering Entwicklungs- und Vertriebs GmbH Innerboot, in particular for skibooth or mountainboots
US6003248A (en) * 1996-08-09 1999-12-21 Fancyform Design Engineering Heatable liner for footwear
EP0948271A1 (en) * 1996-10-01 1999-10-13 Perfect Impression Footwear Company Custom-fitting footwear
EP0948271A4 (en) * 1996-10-01 2002-09-04 Perfect Impression Footwear Co Custom-fitting footwear

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