FR2495875A1 - Laminated flexible covers for culinary heaters - involving aluminium foil coated with polyethylene and opt. polyester film - Google Patents

Laminated flexible covers for culinary heaters - involving aluminium foil coated with polyethylene and opt. polyester film Download PDF

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Publication number
FR2495875A1
FR2495875A1 FR8026242A FR8026242A FR2495875A1 FR 2495875 A1 FR2495875 A1 FR 2495875A1 FR 8026242 A FR8026242 A FR 8026242A FR 8026242 A FR8026242 A FR 8026242A FR 2495875 A1 FR2495875 A1 FR 2495875A1
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France
Prior art keywords
heating
layer
cord
sheets
heat
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Granted
Application number
FR8026242A
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French (fr)
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FR2495875B1 (en
Inventor
Alain Henri Cappe
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Thermobaby
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Thermobaby
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Priority to FR8026242A priority Critical patent/FR2495875A1/en
Publication of FR2495875A1 publication Critical patent/FR2495875A1/en
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Publication of FR2495875B1 publication Critical patent/FR2495875B1/fr
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Classifications

    • 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
    • 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
    • H05B2203/017—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
    • H05B2203/033—Heater including particular mechanical reinforcing means

Abstract

A flexible heating element has a resistive heating wire enclosed between laminated films involving a layer of Al foil bearing a thermoplastic coating which can be fused to bond the laminate interface surrounding the heater element. For making heated mats or covers for catering purposes, to heat croissants, dishes, etc. Esp. claims covers each made of three ply laminates where the Al foil, coated internally with polyethylene, is coated externally with a strong film, specifically polyethylene terephthalate. Covered heaters may be made by mounting a conductor (of e.g. Ni/Cr wire wound about a glass filament carrier and sheathed in silicone rubber) on pegs to maintain a serpentine grid and enclosing the central parts of the wire grid and between panels of the fusible laminates to maintain the heater layout while the grid is disengaged from the jig to allow the rest of the heater grid to be enveloped by laminations at e.g. 200 deg.C. and 2 kg/sq.cm. pressure.

Description

Elément de chauffage souple, et procédé et installation
de fabrication.Flexible heating element, and method and installation
Manufacturing.

La présente invention concerne un élément de chauffage souple, du type comprenant une corde chauffante placée à plat en sandwich entre des couches souples de matériaux différents
L'objet de l'invention est de présenter un élément du type précite, de fabrication aisée et de prix de revient faible, assurant une bonne diffusion de la chaleur, possédant une résistance mécanique convenable et suffisamment de souplesse pour pouvoir être enroulé et/ou replié sur lui-même en cas d'utilisation comme chauffe-assiettes ou chauffe-croissants par exemple.The present invention relates to a flexible heating element, of the type comprising a heating cord placed flat sandwiched between flexible layers of different materials
The object of the invention is to present an element of the aforementioned type, easy to manufacture and of low cost price, ensuring good heat distribution, having a suitable mechanical strength and sufficient flexibility to be able to be wound and / or folded in on itself when used as a plate warmer or croissant croissant for example.

L'objet de l'invention est atteint par le fait que la corde chauffante est placée entre deux feuilles composites résistantes, dont chacune comprend au moins une couche d'aluminium et une couche d'un matériau thermosoudable, les faces constituées de matériau thermosoudable des deux feuilles étant disposées en regard l'une de l'autre de chaque côté de la corde chauffante et thermosoudées l'une à l'autre sur leur surface en regard non occupée par la corde chauffante. The object of the invention is achieved by the fact that the heating cord is placed between two resistant composite sheets, each of which comprises at least one layer of aluminum and one layer of a heat-sealable material, the faces made of heat-sealable material of the two sheets being arranged opposite one another on each side of the heating cord and heat-sealed to each other on their facing surface not occupied by the heating cord.

Avantageusement, les deux feuilles composites sont identiques. Advantageously, the two composite sheets are identical.

Avantageusement, chacune des deux feuilles est une feuille composite triple, dont la troisième couche assure la résistance mécanique de la feuille. Advantageously, each of the two sheets is a triple composite sheet, the third layer of which ensures the mechanical strength of the sheet.

Avantageusement, chacune des deux feuilles comprend, dans cet ordre, une couche de polyéthylène, une couche d'aluminium, et une couche de polyester, cette dernière assurant la résistance mécanique de la feuille. Advantageously, each of the two sheets comprises, in this order, a layer of polyethylene, a layer of aluminum, and a layer of polyester, the latter ensuring the mechanical strength of the sheet.

Avantageusement, la corde chauffante comprend une ame en fibre de verre sur laquelle est bobiné un fil nickel-chrome, l'ensemble étant gainé d'un caoutchouc de silicones.  Advantageously, the heating cord comprises a fiberglass core on which is wound a nickel-chrome wire, the assembly being sheathed with a silicone rubber.

A-ivatageusement, la corde chauffante est connectée à un cordon d'alimentation qui dupasse du sandwich, par l'intermédiaire d'un limiteur d température plat placé dans le sandwich. A-ivatagement, the heating cord is connected to a power cord which exceeds the sandwich, via a flat temperature limiter placed in the sandwich.

L'invention concerne également un procédé de fabrication d'un élément de chauffage du type précité. The invention also relates to a method of manufacturing a heating element of the aforementioned type.

Ce procédé est caractérisé par les étapes suivantes
- on place sur un socle une première feuille composite résistante, comprenant au moins une couche d'aluminium et, à sa surface supérieure, une couche d'un matériau thermosoudable,
- on place sur la première feuille composite la corde chauffante,
- on place au-dessus de la corde chauffante une seconde feuille composite résistante comprenant au moins une couche d'aluminium et, à sa surface inférieure, une couche d'un matériau thermosoudable, et
- on thermosoude les deux feuilles l'une à l'autre dans les régions de leur surface en regard non occupee par la corde chauffante.This process is characterized by the following steps
a first resistant composite sheet is placed on a base, comprising at least one layer of aluminum and, on its upper surface, a layer of a heat-sealable material,
- the heating cord is placed on the first composite sheet,
a second resistant composite sheet is placed above the heating cord comprising at least one layer of aluminum and, on its lower surface, a layer of a heat-sealable material, and
- the two sheets are heat sealed to each other in the regions of their facing surface not occupied by the heating cord.

De préférence, on place la première feuille composite sur un socle comprenant une rainure correspondant à la forme désirée de la corde chauffante dans l'élément de chauffage termite, on dispose la corde chauffante selon ladite forme désirée entre des plots situés sur les les branches d'un gabarit mobile en forme de U, on place le gabarit mobile sur la première feuille composite, de façon que la corde chauffante soit sensiblement audessus de la rainure du socle, on place au-dessus du gabarit la seconde feuille composite, on thermo-soude la seconde feuille à la première dans la zone située entre les branches du gabarit au moyen d'un dispositif chauffant qu'on applique sous pression dans ladite zone, on enlève le gabarit mobile, la corde chauffante restant prise dans le sandwich partiel des deux feuilles compo sites, on termine le thermo-soudage des deux feuilles en faisant progresser le dispositif chauffant de façon que la corde chauffante se positionne correctement dans la rainure du socle, et on enlève le produit fini du socle. Preferably, the first composite sheet is placed on a base comprising a groove corresponding to the desired shape of the heating rope in the termite heating element, the heating rope is arranged in said desired shape between studs located on the branches of '' a U-shaped mobile template, the mobile template is placed on the first composite sheet, so that the heating cord is substantially above the groove of the base, the second composite sheet is placed above the template, welds the second sheet to the first in the area between the branches of the template by means of a heating device which is applied under pressure in said area, the movable template is removed, the heating cord remaining caught in the partial sandwich of the two composite sheets, the heat sealing of the two sheets is completed by advancing the heating device so that the heating cord is positioned correctly in the groove of the s ocle, and remove the finished product from the base.

Enfin, l'invention concerne également une installation de fabrication d'un élément de chauffage souple, pour la mise en oeuvre du procédé précité. Finally, the invention also relates to an installation for manufacturing a flexible heating element, for implementing the aforementioned method.

Cotte installation se caractérise en ce cu'elle comprend un socle rectangulaire plat comportant une rainure correspondant à la forme désirée de la corde chauffante dans l'élément de chauffage terminé, un gabarit mobile en U sur les branches duquel sont fixés des plots destinés à retenir la corde chauffante qu'on passe autour desdits plots selon ladite forme désirée, et un dispositif chauffant destiné au thermosoudage des feuilles de l'élément chauffant. This installation is characterized in that it includes a flat rectangular base comprising a groove corresponding to the desired shape of the heating cord in the heating element finished, a mobile U-shaped jig on the branches of which are studs intended to retain the heating cord which is passed around said studs according to said desired shape, and a heating device intended for heat sealing the sheets of the heating element.

Avantageusement, le socle et le gabarit sont en bois. Advantageously, the base and the template are made of wood.

Avantageusement, le gabarit est pivotant autour d'un axe parallèle et adjacent à un côté du socle. Advantageously, the template is pivotable about a parallel axis and adjacent to one side of the base.

Les caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un mode préféré de réalisation, faite en référence aux dessins annexés sur lesuels :
- la figure 1 est une vue en perspective d'un élément de chauffage souple conforme à l'invention
- la figure 2 est une vue en coupe II-II de l'élément de la fig. l
- la figure 3 est une vue en perspective de l'installation de fabrication conforme à l'invention, le gabarit ouvert
- la figure 4 est une vue en perspective de l'installation de la figure 3, le gabarit fermé.The characteristics and advantages of the invention will be better understood on reading the description which follows of a preferred embodiment, made with reference to the accompanying drawings on the books:
- Figure 1 is a perspective view of a flexible heating element according to the invention
- Figure 2 is a sectional view II-II of the element of FIG. l
- Figure 3 is a perspective view of the manufacturing installation according to the invention, the open template
- Figure 4 is a perspective view of the installation of Figure 3, the closed template.

La figure 1 représente un élément de chauffage rectangulaire 1 constitué de deux feuilles composites 2 et 3 (fig. 2) a l'intérieur desquelles est prise en sandwich une corde chauffante 4, reliée par l'interme- diaire d'un limiteur de température 5 à un cordon d'alimentation 6 munie d'une fiche 7. FIG. 1 represents a rectangular heating element 1 consisting of two composite sheets 2 and 3 (fig. 2) inside which a heating cord 4 is sandwiched, connected by means of a temperature limiter 5 to a power cord 6 provided with a plug 7.

Dans le mode de réalisation représenté, les deux feuilles composites 2 et 3 sont identiques, obtenues par le contrecollage de trois feuilles 8, 9, 10 de polyéthylène, d'aluminium et de polyester. In the embodiment shown, the two composite sheets 2 and 3 are identical, obtained by laminating three sheets 8, 9, 10 of polyethylene, aluminum and polyester.

Les épaisseurs respectives de ces matériaux sont,dans le cas d'un élément de chauffage, destinées au chauffage des assiettes de 65, 12 et 12 microns ; dans une réalisation destinée au chauffage des croissants, elles sont de 65, 15 et 23 microns. The respective thicknesses of these materials are, in the case of a heating element, intended for heating plates of 65, 12 and 12 microns; in an embodiment intended for heating croissants, they are 65, 15 and 23 microns.

Le polyéthylène assure par thermosoudage la liaison des deux feuilles composites 2 et 3, de part et d'autre de la corde chauffante 4, dans les régions telles que 11, régions des feuilles en regard non occupées par la corde chauffante 4. Le polyéthylène a aussi un rôle d ' isolation électrique supplémentaire. The polyethylene ensures by heat sealing the connection of the two composite sheets 2 and 3, on either side of the heating cord 4, in the regions such as 11, regions of the facing sheets not occupied by the heating cord 4. The polyethylene has also a role of additional electrical insulation.

La couche extérieure de polyester assure l'essentiel de la résistance mécanique du matériau, et la protection des feuilles. The outer layer of polyester provides most of the mechanical strength of the material, and the protection of the sheets.

L'aluminium joue surtout le rôle de diffuseur de chaleur. C'est pourquoi on l'utilise des deux côtés de la résistance chauffante. Aluminum mainly plays the role of heat diffuser. This is why it is used on both sides of the heating element.

Les éléments de chauffage conformes à l'invention, s'ils sont utilisés en chauffe-croissanXs, peuvent avoir une dimension de 25 x 50 cm, par exemple, et s'ils sont utilisés en chauffe-assiettes, une dimension de 22 x 145 cm, par exemple. La corde chauffante atteint dans le premier cas une température de 1300C et, dans le second, de 1100C. Une housse décorative en tissu recouvre l'élément de chauffage.  The heating elements according to the invention, if they are used in croissants, can have a dimension of 25 x 50 cm, for example, and if they are used in plate heaters, a dimension of 22 x 145 cm, for example. The heating cord reaches in the first case a temperature of 1300C and, in the second, of 1100C. A decorative fabric cover covers the heating element.

L'installation de fabrication d'un élément de
chauffage conforme a l'invention comprend (fig.3 et 4)
- un socle 20, de préférence en bois, dans leauel a été creusée lne rainure 21 de 6mm de large et 3 mm de profondeur, rut 5 sur lequel de baguettes 22 mar- quent l'emplacement t-e la première f- ille composite 3 préalablement coupée La rainure 2 reproduit la configuration qu'on veut donner à la corde chauffante dans l'élément de chauffage
- un gabarit mobile 23 en U, de préférence en bois, sur les deux branches 23a et 23b duquel sont fixés des plots cylindriques 24 entre et autour desquels on peut tendre la corde chauffante 4 selon la même configuration que la rainure 21.The installation for manufacturing an element of
heating according to the invention includes (fig. 3 and 4)
- a base 20, preferably made of wood, in the water has been dug a groove 21 6mm wide and 3mm deep, rut 5 on which rods 22 mark the location of the first composite wire 3 previously cut Groove 2 reproduces the configuration that we want to give to the heating cord in the heating element
a movable jig 23 in a U, preferably made of wood, on the two branches 23a and 23b of which cylindrical studs 24 are fixed between and around which the heating cord 4 can be stretched in the same configuration as the groove 21.

Le gabarit 23 pivote sur une charnière non représentée autour d'un axe 25 horizontal, parallèle et adjacent au grand côté du socle. The template 23 pivots on a hinge, not shown, around a horizontal axis 25, parallel and adjacent to the long side of the base.

La hauteur des plots 24 et la position de la charnière sonttellesque ceux-ci se posent à plat sur la feuille 3 (fig. 4) quand le gabarit pivotant 23 est en position horizontale basse. The height of the studs 24 and the position of the hinge are such that they are laid flat on the sheet 3 (FIG. 4) when the pivoting jig 23 is in the low horizontal position.

La position et le diamètre de ces plots sont tels que la corde chauffante 4 enroulée autour d'eux vienne, en position basse, s'appliquer sensiblement au centre de la rainure 21 du socle 20. The position and the diameter of these studs are such that the heating cord 4 wound around them comes, in the low position, to be applied substantially to the center of the groove 21 of the base 20.

Le mode operatoire est le suivant
La corde chauffante 4 est coupée à la longueur voulue. Elle est ensuite connectée avec un cordon d'alimentaticn 6 et un limiteur de température 5 très plat (e 3mm). Puis, on la dispose sur les plots 24, en positionnant correctement le cordon 6 et le limiteur 5, et on branche le cordon à une prise de courant 26.The operating mode is as follows
The heating cord 4 is cut to the desired length. It is then connected with a power cord 6 and a very flat temperature limiter 5 (e 3mm). Then, it is placed on the studs 24, correctly positioning the cord 6 and the limiter 5, and the cord is connected to an electrical outlet 26.

On dispose la première feuille-enveloppe 3, face 8 en polyéthylène en haut, on rabat la plaque pivotante 23 et on applique dans son évidement la seconde feuille-enveloppe 2, la face polyéthylène 8 étant en dessous. On positionne celle-ci grâce à un repère mare au moment de sa découpe. The first sheet-envelope 3, face 8 of polyethylene is placed at the top, the pivoting plate 23 is folded down and the second sheet-envelope 2 is applied in its recess, the polyethylene face 8 being below. We position it thanks to a pond mark at the time of its cutting.

On colle alors dans la zone 27, située entre les deux branches du gabarit 23, les deux feuilles 2 et 3 grâce à un dispositif chauffant dont la plaque est à plus de 200 C et qui permet d'exercer une pression d'environ 2 kg/cm2. Ce dispositif chauffant peut être manoeuvré la main, et être semblable à un fer à repasser. La corde chauffante 4 rentre dans la rainure 21 sous la pression et on obtient ainsi un collage en un seul passage sur ue surface assez étendue pour que le positionnement de la corde chauffante 4 soit précis. Then glue in the area 27, located between the two branches of the template 23, the two sheets 2 and 3 thanks to a heating device whose plate is at more than 200 C and which allows to exert a pressure of about 2 kg / cm2. This heating device can be operated by hand, and can be similar to an iron. The heating cord 4 enters the groove 21 under pressure and a bonding is thus obtained in a single pass over a sufficiently large surface for the positioning of the heating cord 4 to be precise.

Tout le centre étant collé, on relève le gabarit 23 et,en faisant progresser le dispositif chauffant dans le sens de l'axe de l'élément chauffant, les divers brins de la corde chauffante se positionnent dans les rainures et on achève ainsi la fabrication du corps. All the center being glued, the template 23 is raised and, by advancing the heating device in the direction of the axis of the heating element, the various strands of the heating cord are positioned in the grooves and the manufacturing is thus completed. from the body.

On débranche la prise, et on enlève l'élément du socle, l'élément de chauffage étant alors prêt à recetroir sa hcusse de tissu le cas échéant. The plug is disconnected, and the element is removed from the base, the heating element then being ready to receive its fabric cover if necessary.

L'invention n'est naturellement pas limitée à ce mode particulier de réalisation, mais en recouvre au contraire toutes les variantes, sa portée étant définie par les revendications annexes.  The invention is naturally not limited to this particular embodiment, but on the contrary covers all variants, its scope being defined by the appended claims.

Claims (13)

REVENDICATIONS 1. Elément de chauffage souple du type comprenant une corde chauffante placée à plat en sandwich entre des couches souples de matériaux différents, caractérisé en ce que la corde chauffante (4) est placée entre deux feuilles composites résistantes (2 et 3), dont chacune comprend au moins une couche d'aluminium (9) et une couche d'un matériau thermosoudabie (8), les faces cons tituées de matériau thermosoudable (8) des deux feuilles (2, 3) étant disposées en regard l'une de l'autre de chaque côté de la corde chauffante et thermosoudees l'une à l'autre sur leur surface (11) en regard non occu pee par la corde chauffante.1. Flexible heating element of the type comprising a heating cord placed flat in sandwich between flexible layers of different materials, characterized in that the heating cord (4) is placed between two resistant composite sheets (2 and 3), each of which comprises at least one layer of aluminum (9) and one layer of a heat-weldable material (8), the faces made up of heat-sealable material (8) of the two sheets (2, 3) being arranged facing one of the 'other on each side of the heating cord and heat sealed to each other on their surface (11) facing unoccupied by the heating cord. 2. Elément selon la revendication 1, caractérisé en ce que les deux feuilles composites (2, 3) sont identiques.2. Element according to claim 1, characterized in that the two composite sheets (2, 3) are identical. 3. Elément selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que chacune des deux feuilles (2, 3) est une feuille composite triple, dont la troisième couche (10) assure la résistance mécanique ce la feuille.3. Element according to any one of claims 1 or 2, characterized in that each of the two sheets (2, 3) is a triple composite sheet, the third layer (10) of which ensures the mechanical strength of the sheet. 4. Elément selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chacune des deux feuilles comprend, dans cet ordre, une couche de polyéthylène (8), une couche d'aluminium (9), et une couche de polyester (10), cette dernière assurant la résistance mécanique de la feuille.4. Element according to any one of claims 1 to 3, characterized in that each of the two sheets comprises, in this order, a layer of polyethylene (8), a layer of aluminum (9), and a layer of polyester (10), the latter ensuring the mechanical strength of the sheet. 5. Elément selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la corde chauffante (4) comprend une âme en fibre de verre sur laquelle est bobiné un fil nickel-chrome , l'ensemble étant gainé d'un caoutchouc de silicone.5. Element according to any one of claims 1 to 4, characterized in that the heating cord (4) comprises a fiberglass core on which is wound a nickel-chrome wire, the assembly being sheathed in rubber silicone. 6. Elément de chauffage souple selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la corde chauffante (4) est connectée à un cordon d'alimentation (6) qui dépasse du sandwich, par l'intermé diaire d'un limiteur (5) de température plat placé dans le sandwich.6. Flexible heating element according to any one of claims 1 to 5, characterized in that the heating cord (4) is connected to a power cord (6) which protrudes from the sandwich, by means of a flat temperature limiter (5) placed in the sandwich. - on place au-dessus de la corde chauffante(4) une seconde feuille composite résistante (2) comprenant au moins une couche d'aluminium (9) et, à sa surface inférieure, une couche d'un matériau thermosoudable (S) et on thermosoude les deux feuilles l'une à l'autre dans les régions (11) de leur surface en regard non occupée par la corde chauffante. a second resistant composite sheet (2) is placed above the heating cord (4) comprising at least one layer of aluminum (9) and, on its lower surface, a layer of a heat-sealable material (S) and the two sheets are heat sealed to each other in the regions (11) of their facing surface not occupied by the heating cord. - on place sur la première feuille composite la corde chauffante (4), - the heating cord (4) is placed on the first composite sheet, - on place sur un socle (20) une première feuille composite (3) résistante, comprenant au moins une couche d'aluminium (9) et, à sa surface supérieure, une couche (8) d'un matériau thermosoudable, - a resistant first composite sheet (3) is placed on a base (20), comprising at least one layer of aluminum (9) and, on its upper surface, a layer (8) of a heat-sealable material, 7. Procéde de fabrication d'un élément de chauffage souple, du type comprenant une corde chauffante placée en sandwich entre des couches souples de matériaux différents, caractérisé en ce que 7. Method for manufacturing a flexible heating element, of the type comprising a heating cord sandwiched between flexible layers of different materials, characterized in that 8. Procédé selon la revendication 4, caractérisé en ce que l'on place la première feuille composite (3) sur un socle comprenant une rainure (21) correspondant à la forme désirée de la corde chauffante (4) dans l'élément de chauffage terminé (1), on dispose la corde chauffante (4) selon ladite forme désirée entre des plots (24) situes sur les branches (23a, 23b) d'un gabarit mobile (23) en forme de U, on place le gabarit mobile (23) sur la première feuille composite (3), de façon que la corde chauffante (4) soit sensiblement au-dessus de la rainure (21) du socle (20), on place au-dessus du gabarit (23) la seconde feuille composite (2), on thermosoude la seconde feuille (2) à la première (3) dans la zone (27) située entre les branches du gabarit (23) au moyen d'un dispositif chauffant qu'on applique sous pression dans ladite zone (27), on enlève le gabarit mcbile (23), la corde chauffante (4) restant prise dans 1 sandwich partiel des deux feuilles composites (2,3), on termine le thermosoudage des deux feuilles(2,3) en faisant progresser le dispositif chauffant de façon que la corde chauffanfr- (4) se positionne correctement dans lc rainure (21) da socle (20), et on enlève le produit fili (1) du socle (20).8. Method according to claim 4, characterized in that the first composite sheet (3) is placed on a base comprising a groove (21) corresponding to the desired shape of the heating cord (4) in the heating element finished (1), the heating cord (4) according to said desired shape is placed between studs (24) located on the branches (23a, 23b) of a movable template (23) in the shape of a U, the movable template is placed (23) on the first composite sheet (3), so that the heating cord (4) is substantially above the groove (21) of the base (20), the second is placed above the template (23) composite sheet (2), the second sheet (2) is heat sealed to the first (3) in the zone (27) located between the branches of the template (23) by means of a heating device which is applied under pressure in said area (27), we remove the mcbile template (23), the heating cord (4) remaining caught in 1 partial sandwich of the two composite sheets (2,3), we end the thermos weaving of the two sheets (2,3) by advancing the heating device so that the heating cord (4) is positioned correctly in the groove (21) of the base (20), and the threaded product (1) is removed from the base (20). 9. Procédé selon l'une quelconque des revendications 7 ou 3, caractérisé en ce que l'on utilise deux feuilles composites (2, 3) triples semblables constituées d'une couche de polyéthylène (8), d'une couche d'aluminium (9) et d'une couche de polyester (10).9. Method according to any one of claims 7 or 3, characterized in that two similar triple composite sheets (2, 3) are used consisting of a polyethylene layer (8), an aluminum layer (9) and a layer of polyester (10). 10. Procédé selon l'une quelconque des revendications 7 à 9, caractérisé en ce que le matériau thermo-soudable de chaque feuille est du polyéthylène (8) que l'on thermo-soude à une température d'environ 2O00C et sous une pression d'environ 2 kg/cm2.10. Method according to any one of claims 7 to 9, characterized in that the heat-sealable material of each sheet is polyethylene (8) which is heat-sealed at a temperature of about 2O00C and under pressure about 2 kg / cm2. 11. Installation de fabrication d'un élément de chauffage souple pour la mise en oeuvre du procédé selon l'une quelconque des revendications 7 à 9, caractérisée en ce qu'elle comprend11. Installation for manufacturing a flexible heating element for implementing the method according to any one of claims 7 to 9, characterized in that it comprises - un socle rectangulaire (20) plat comportant une rainure (21) correspondant à la forme désirée de la corde chauffante (4) dans l'élément de chauffage terminé (1) - a rectangular rectangular base (20) comprising a groove (21) corresponding to the desired shape of the heating cord (4) in the finished heating element (1) - un gabarit mobile (23) en U sur les branches (23a, 23b) duquel sont fixés des plots (24) destinés à retenir la corde chauffante (4) que l'on passe autour desdits plots (24) selon ladite forme désirée  - A movable template (23) in U on the branches (23a, 23b) of which are fixed studs (24) intended to retain the heating cord (4) which are passed around said studs (24) according to said desired shape - et un dispositif chauffant destiné au thermosoudage des feuilles (2,3) de l'élément chauffant.  - And a heating device for heat sealing the sheets (2,3) of the heating element. 12. Installation selon la revendication 11, caractérisée en ce que le socle (20) et le gabarit (23) sont en bois.12. Installation according to claim 11, characterized in that the base (20) and the template (23) are made of wood. 13. Installation selon l'une quelconque des rc vendications ll ou 12, caractérisée en ce que le gabarit (23) est pivotant autour d'un axe (25) parallèle et adjacent à un côté du socle (20). 13. Installation according to any one of rc vendications ll or 12, characterized in that the template (23) is pivotable about an axis (25) parallel and adjacent to one side of the base (20).
FR8026242A 1980-12-10 1980-12-10 Laminated flexible covers for culinary heaters - involving aluminium foil coated with polyethylene and opt. polyester film Granted FR2495875A1 (en)

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FR8026242A FR2495875A1 (en) 1980-12-10 1980-12-10 Laminated flexible covers for culinary heaters - involving aluminium foil coated with polyethylene and opt. polyester film

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FR8026242A FR2495875A1 (en) 1980-12-10 1980-12-10 Laminated flexible covers for culinary heaters - involving aluminium foil coated with polyethylene and opt. polyester film

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FR2495875A1 true FR2495875A1 (en) 1982-06-11
FR2495875B1 FR2495875B1 (en) 1984-08-10

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986006242A1 (en) * 1985-04-16 1986-10-23 Per Wesseltoft A/S Sheet-formed heater
WO1990013986A1 (en) * 1989-05-08 1990-11-15 Per Wesseltoft Flat electric heating arrangement
US5406930A (en) * 1993-08-10 1995-04-18 Atd Corporation Outdoor cooking device
US5408071A (en) * 1992-06-11 1995-04-18 Atd Corporation Electric heater with heat distributing means comprising stacked foil layers
US6276356B1 (en) 1998-07-09 2001-08-21 Atd Corporation Portable gas grill
WO2006097930A1 (en) * 2005-03-15 2006-09-21 I.D.L. Heaters Thermal Products Ltd. Grounded crystalline heating ribbon

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439046B1 (en) 1990-01-22 1993-09-22 Atd Corporation Pad including heat sink and thermal insulation areas and laminate having shapability

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958185A (en) * 1950-03-04
GB838497A (en) * 1955-08-22 1960-06-22 Charles Ashton Waller Improvements in or relating to electrically-heated carpets or floor coverings
US3031739A (en) * 1958-06-02 1962-05-01 Wiegand Co Edwin L Electric heating units and method of making the same
US3153140A (en) * 1961-09-12 1964-10-13 Electric Parts Corp Radiant heating panel
FR2069257A5 (en) * 1969-11-11 1971-09-03 Schneeberger Kork Ag
DE2908576A1 (en) * 1979-03-05 1980-09-11 Kabel Metallwerke Ghh Planar electric heating element - with zigzag loops embedded between two plastic fibre mats, used e.g. for car seats

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958185A (en) * 1950-03-04
GB838497A (en) * 1955-08-22 1960-06-22 Charles Ashton Waller Improvements in or relating to electrically-heated carpets or floor coverings
US3031739A (en) * 1958-06-02 1962-05-01 Wiegand Co Edwin L Electric heating units and method of making the same
US3153140A (en) * 1961-09-12 1964-10-13 Electric Parts Corp Radiant heating panel
FR2069257A5 (en) * 1969-11-11 1971-09-03 Schneeberger Kork Ag
DE2908576A1 (en) * 1979-03-05 1980-09-11 Kabel Metallwerke Ghh Planar electric heating element - with zigzag loops embedded between two plastic fibre mats, used e.g. for car seats

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986006242A1 (en) * 1985-04-16 1986-10-23 Per Wesseltoft A/S Sheet-formed heater
WO1990013986A1 (en) * 1989-05-08 1990-11-15 Per Wesseltoft Flat electric heating arrangement
US5408071A (en) * 1992-06-11 1995-04-18 Atd Corporation Electric heater with heat distributing means comprising stacked foil layers
US5406930A (en) * 1993-08-10 1995-04-18 Atd Corporation Outdoor cooking device
US6276356B1 (en) 1998-07-09 2001-08-21 Atd Corporation Portable gas grill
WO2006097930A1 (en) * 2005-03-15 2006-09-21 I.D.L. Heaters Thermal Products Ltd. Grounded crystalline heating ribbon

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