EP0145560A2 - Treating process for leather, particularly for leather shoe-uppers, shoe-uppers and shoes manufactured according to this process - Google Patents

Treating process for leather, particularly for leather shoe-uppers, shoe-uppers and shoes manufactured according to this process Download PDF

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Publication number
EP0145560A2
EP0145560A2 EP84402324A EP84402324A EP0145560A2 EP 0145560 A2 EP0145560 A2 EP 0145560A2 EP 84402324 A EP84402324 A EP 84402324A EP 84402324 A EP84402324 A EP 84402324A EP 0145560 A2 EP0145560 A2 EP 0145560A2
Authority
EP
European Patent Office
Prior art keywords
leather
reinforcements
shoe
layer
appliques
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.)
Granted
Application number
EP84402324A
Other languages
German (de)
French (fr)
Other versions
EP0145560B1 (en
EP0145560A3 (en
Inventor
Jacques Pouget
Vincent Lipovac
Yves De Maudit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hexion Inc
Original Assignee
Borden Inc
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Filing date
Publication date
Priority claimed from FR8318232A external-priority patent/FR2554689B1/en
Priority claimed from FR8417139A external-priority patent/FR2573093B2/en
Application filed by Borden Inc filed Critical Borden Inc
Priority to AT84402324T priority Critical patent/ATE50124T1/en
Publication of EP0145560A2 publication Critical patent/EP0145560A2/en
Publication of EP0145560A3 publication Critical patent/EP0145560A3/en
Application granted granted Critical
Publication of EP0145560B1 publication Critical patent/EP0145560B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A43B23/0245—Uppers; Boot legs characterised by the constructive form
    • A43B23/0255—Uppers; Boot legs characterised by the constructive form assembled by gluing or thermo bonding
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A43B23/0205—Uppers; Boot legs characterised by the material
    • A43B23/021—Leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00—Surface finishing of leather
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/904—Artificial leather

Definitions

  • the invention relates to the shaping of leather, more particularly for the manufacture of shoe uppers.
  • shoes are made by assembling a shoe upper with a sole; for this assembly, the upper is placed on a shape, one face of which adjacent to the edge of the upper acts as a wall of a molding cavity into which the plastic material intended to constitute the sole is injected, thus secured to the upper by its edge during the very molding; or else the rod having been placed on the form and coated with an adhesive on its edge, the sole is applied to it, in leather or in plastic, thus assembled with the rod by gluing or welding.
  • the shoe manufacturer receives hides from the tanner from which he cuts the uppers. Before delivery, however, the tanner treats the leather by applying the finishing layer desired by the manufacturer to give the upper the desired end look for the shoe upper, from the point of view of color and / or view of the surface finish.
  • the invention relates in particular to a process which, taking the opposite view from what has been proposed hitherto, namely eliminating, before joining with the sole, the product received by the skin, plans to bring on it here a deposit chosen to obtain the desired final effect, namely a bonding of the leather thus treated with the sole at least as good as with a leather stripped of all products by glassing or carding.
  • the process is particularly advantageous for the manufacture of sports shoes, such as so-called jogging or training shoes, in which the leather constituting the upper must be light in color, even white, the irregularities of the glassing or carding then being reduced. res, especially when the sole includes a peripheral projection intended to partially cover the upper.
  • a deposit adhering to the leather is formed on the surface of the leather, by adding material, allowing, without carding or locking the leather, the attachment of a leather shoe upper thus treated with a sole, either by direct injection of the material of the sole, either by welding or gluing on a prefabricated sole.
  • the shoe manufacturer thus has no prior operation to perform on the leather delivered to him by the tanner, after having undergone the surface treatment according to the invention. Furthermore, the latter does not imply an increase in cost for the tanner, since this treatment replaces the finishing operations which were previously necessary to obtain the surface appearance and mechanical properties of the leather which are desired by the shoe manufacturer. .
  • the deposit is formed on the surface of the leather by a multiplicity of superimposed layers, each of which is chosen to be adherent to the underlying layer.
  • the leather receives a prefond, advantageously constituted by a polyurethane emulsion containing pigments and a crosslinking agent, in a sufficiently diluted form, as presented by the acrylic prefonds usually used to ensure its good impregnation in the dermis.
  • a prefond advantageously constituted by a polyurethane emulsion containing pigments and a crosslinking agent, in a sufficiently diluted form, as presented by the acrylic prefonds usually used to ensure its good impregnation in the dermis.
  • the process provides, before the introduction of the prefond, a synthetic retanning of the skin using chemicals usually used by the tanner, such as condensed phenolic sulfonated and anionic derivatives, phosphoric esters and polyglycol esters, etc. , excluding all products of plant or animal origin.
  • chemicals usually used by the tanner such as condensed phenolic sulfonated and anionic derivatives, phosphoric esters and polyglycol esters, etc. , excluding all products of plant or animal origin.
  • the bond between the deep and the fibers of the leather is then not only mechanical, but the adhesion is considerably increased by the chemical bonds of the hydrogen type occurring between the polyurethane binder of the prefond and certain functional groups of the retanning product.
  • the method also provides that it will very advantageously be possible to sand the skin flower before the introduction of the prelude.
  • the skin receives an "inter" which has a composition similar to that of the foreground, but which is of a greater concentration both in emulsion and in pigments, the emulsion also being added with crosslinking agent.
  • the skin thus treated is subjected to a first hot plating to ensure complete chemical crosslinking of the two layers thus provided and also adhesion and cohesion perfect sion of the whole leather, prefund and inter, while preparing the desired surface appearance for the upper of the shoe.
  • a surface finish layer is then applied, which consists of a solvent-phase dissolution of a polyurethane resin, pigment and a crosslinking agent.
  • the appearance of this finish can be glossy or satin. It adheres well to leather due to the prior treatment of the latter.
  • the leather is ready for delivery by the tanner to the shoe manufacturer.
  • composition is as follows (by weight) Apply 4 to 6 g of dry product per square foot of leather.
  • composition is as follows (by weight):
  • composition is as follows (by weight):
  • Hot plating It is carried out on conventional tanning equipment (heating presses) at 100 ° C for 2 to 4 seconds.
  • shoe uppers with the external appearance of leather are produced from sheet materials of which at least the face facing outwards is not of leather, such as fabrics coated with polyvinyl chloride or plastisols lined with a fabric or split leather previously glued.
  • the imprint of a model obtained by flattening a leather shoe stem from the disassembly of a shoe is taken.
  • a sheet of the type mentioned above is placed on which it is desired to give the appearance of natural leather in the mold thus produced and the sheet is passed through by a high-frequency electric current, which causes the sheet to soften or melt. , the surface of which then follows the irregularities of the mold wall and thus acquires the surface configuration of the natural leather upper which has been imprinted.
  • a high frequency current also allows heat sealing, on the face of the sheet facing outwards, of appliques or reinforcements made of a material having suitable dielectric properties.
  • the mold containing the sheet to be treated and, if necessary, the appliques or reinforcements to be placed are placed between two electrically conductive plates and a high frequency current is passed through. between the two plates through the mold and its contents.
  • upper is used here to denote both a part of the finished shoe and a cut sheet intended to constitute, after shaping, this part of the shoe.
  • Another object of the invention is then to allow the application, to the uppers of leather shoes, of the high frequency process, and this with the same economic advantages as those which it presents in its known application to uppers of synthetic materials
  • the appliques and / or reinforcements can be made of synthetic materials having a suitable dielectric permeability, for example plastisols, polyvinyl chloride and vinyl copolymers, as in the prior art.
  • the invention also provides for the application of leather appliques and / or reinforcements after their faces are turned.
  • leather appliques and / or reinforcements after their faces are turned.
  • the face to be decorated should also have undergone the surface treatment described above.
  • a decoration is for example an imitation of seams, obtained by taking the imprint of a model comprising appliques and / or reinforcements fixed by seams.
  • the invention provides, in the implementation of the high-frequency process to take into account the fact that the resistivity of the leather is a function of the tanning conditions and the humidity level, and can be very high, to compensate for the resistivity of the leather by reducing that of the mold, for example by incorporating into the constituent material of the latter conductive particles such as metal powder particles.
  • a shoe upper having undergone the surface treatment according to the invention can be directly secured to a sole, either that it is mounted on a form forming part of 'A mold which receives the sole in PU, TR, PVC, etc., by injection, as usual, either that, on a form, a previously manufactured sole is attached to it by bonding or welding.
  • no treatment of the leather by the shoe manufacturer is necessary and, in particular, no glazing or carding, and the adhesion of the sole takes place over the entire surface in contact with the leather, in the case of an injected sole, or over the entire surface of the leather which will have received the glue, in the case of a glued or welded sole.
  • the manufacture of the shoe is simplified. Rejects are avoided as well as rework.
  • the cost price of the set is reduced.
  • the invention also provides that the treatment of the face of the leather intended to be turned towards the exterior comprises the application not of three layers, as described above, but of only two layers, the prelude or the inter being omitted. Such treatment is provided, whether or not the leather thus treated is intended to be subjected subsequently to the high-frequency shaping treatment.
  • the invention also provides a surface treatment of the leather which comprises the application to the leather of a single layer, then relatively large, of prefund to allow a shaping of the leather analogous to that of the leather on which three successive layers have been applied as described above.
  • the invention also relates to a shoe upper, the manufacture of which uses the shaping process which has just been defined, and a shoe comprising such a upper.
  • the invention applies to the different kinds of leather used in the shoe industry, both those called “skin” and those called “crust”. It finds a particularly interesting application for the manufacture of sports shoes.
  • the invention also applies in fields other than that of shoe uppers, in particular for the use of leather in clothing, furniture, luggage, saddlery. It also generally provides for the application of high frequency treatment for the assembly of leather elements after they have undergone an appropriate surface treatment or for their welding to themselves after folding.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

L'invention concerne un procédé de façonnage du cuir, dans lequel on forme à la surface du cuir, par apport de matière, un dépôt adhérant au cuir et permettant, sans cardage ni verrage du cuir, la solidarisation d'une tige de chaussure en cuir ainsi traité avec une semelle, soit par injection directe du matériau constitutif de la semelle, soit par soudage ou collage sur une semelle préfabriquée et/ou permettant le façonnage du cuir par un courant à haute fréquence.The invention relates to a method of shaping leather, in which a deposit adhering to the leather is formed on the surface of the leather, by adding material, permitting, without carding or locking the leather, the attachment of a shoe upper in leather thus treated with a sole, either by direct injection of the material constituting the sole, or by welding or gluing on a prefabricated sole and / or allowing the leather to be shaped by a high frequency current.

Description

L'invention concerne le façonnage du cuir, plus particulièrement en vue de la fabrication de tiges de chaussures.The invention relates to the shaping of leather, more particularly for the manufacture of shoe uppers.

De très nombreuses chaussures sont fabriquées par l'assemblage d'une tige de chaussure avec une semelle; pour cet assemblage, la tige est placée sur une forme, dont une face adjacente au bord de la tige joue le rôle de paroi d'une cavité de moulage dans laquelle est injectée la matière plastique destinée à constituer la semelle, ainsi solidarisée avec la tige par son bord au cours même du moulage; ou bien la tige ayant été placée sur la forme et enduite d'une colle sur son bord, on applique sur celui-ci la semelle, en cuir ou en matière plastique,ainsi assemblée avec la tige par collage ou soudage.Many shoes are made by assembling a shoe upper with a sole; for this assembly, the upper is placed on a shape, one face of which adjacent to the edge of the upper acts as a wall of a molding cavity into which the plastic material intended to constitute the sole is injected, thus secured to the upper by its edge during the very molding; or else the rod having been placed on the form and coated with an adhesive on its edge, the sole is applied to it, in leather or in plastic, thus assembled with the rod by gluing or welding.

Pour la fabrication de chaussures à tige de cuir, le fabricant de chaussures reçoit du tanneur des peaux dans lesquelles il découpe les tiges. Avant la livraison toutefois, le tanneur traite le cuir en lui appliquant la couche de finition que souhaite le fabricant pour donner à la tige l'aspect final recherché pour la tige de chaussure, au point de vue de la couleur et/ou au point de vue de l'état de surface.For the manufacture of shoes with leather uppers, the shoe manufacturer receives hides from the tanner from which he cuts the uppers. Before delivery, however, the tanner treats the leather by applying the finishing layer desired by the manufacturer to give the upper the desired end look for the shoe upper, from the point of view of color and / or view of the surface finish.

Après avoir constaté que, trop souvent, la semelle adhérait d'une manière insuffisante à la tige provenant d'un cuir ainsi traité et déterminé que ce défaut provenait d'une mauvaise liaison entre la couche de finition et le cuir, le fabricant de chaussure a pris l'habitude, avant l'assemblage, de débarrasser de la couche de finition la zone marginale de la tige destinée à venir en contact avec la semelle. Ce traitement s'opère habituellement par verrage ou cardage.After having found that, all too often, the sole adhered insufficiently to the upper coming from a leather thus treated and determined that this defect came from a bad bond between the finishing layer and the leather, the shoe manufacturer has become accustomed, before assembly, to rid the finishing layer of the marginal area of the upper intended to come into contact with the sole. This treatment is usually done by glassing or carding.

Mais, très fréquemment, il arrive alors que la zone cardée ou verrée ne coïncide pas avec la partie de la tige qui, par la suite, vient en contact avec la semelle. Si la zone verrée ou cardée est trop large, alors la chaussure, après solidarisation de la semelle, montre une lisière plus ou moins régulière dépourvue de couche de finition. Cette lacune oblige à l'exécution de retouches à la main, dispendieuses. Si par contre la partie verrée ou cardée est trop étroite, la semelle aura une adhésion insuffisante avec la lisière non verrée ou cardée et la chaussure devra être trop souvent mise au rebut. Dans tous les cas, l'adhérence de la semelle sur la tige est limitée à la partie de la surface qui a été verrée ou cardée.But, very often, it happens that the carded or glassed area does not coincide with the part of the upper which, subsequently, comes into contact with the sole. If the glassed or carded area is too wide, then the shoe, after the sole has been secured, shows a more or less regular selvedge devoid of topcoat. This shortcoming requires costly manual touch-ups. If, on the other hand, the locked or carded part is too narrow, the sole will have insufficient adhesion with the edge not locked or carded and the shoe will have to be discarded too often. In all cases, the grip of the sole on the upper is limited to the part of the surface that has been locked or carded.

L'invention vise notamment un procédé qui, prenant le contre- pied de ce qui est proposé jusqu'ici,à savoir d'éliminer, avant la solidarisation avec la semelle, le produit reçu par la peau, prévoit d'apporter sur celle-ci un dépôt choisi pour obtenir l'effet final recherché, à savoir une solidarisation du cuir ainsi traité avec la semelle au moins aussi bonne qu'avec un cuir débarrassé de tous produits par verra-- ge ou cardage.The invention relates in particular to a process which, taking the opposite view from what has been proposed hitherto, namely eliminating, before joining with the sole, the product received by the skin, plans to bring on it here a deposit chosen to obtain the desired final effect, namely a bonding of the leather thus treated with the sole at least as good as with a leather stripped of all products by glassing or carding.

Le procédé est particulièrement intéressant pour la fabrication de chaussures de sport, comme des chaussures dites de jogging ou de training,dans lesquelles le cuir constitutif de la tige doit être de couleur claire, voire blanche, les irrégularités du verrage ou cardage étant alors rédhibitoires, notamment lorsque la semelle comprend une saillie périphérique destinée à recouvrir partiellement la tige.The process is particularly advantageous for the manufacture of sports shoes, such as so-called jogging or training shoes, in which the leather constituting the upper must be light in color, even white, the irregularities of the glassing or carding then being reduced. res, especially when the sole includes a peripheral projection intended to partially cover the upper.

Selon l'invention, on forme à la surface du cuir, par apport de matière, un dépôt adhérant au cuir et permettant,sans cardage ni verrage du cuir, la solidarisation d'une tige de chaussure en cuir ainsi traité avec une semelle, soit par injection directe du matériau constitutif de la semelle, soit par soudage ou collage sur une semelle préfabriquée.According to the invention, a deposit adhering to the leather is formed on the surface of the leather, by adding material, allowing, without carding or locking the leather, the attachment of a leather shoe upper thus treated with a sole, either by direct injection of the material of the sole, either by welding or gluing on a prefabricated sole.

Le fabricant de chaussures n'a ainsi aucune opération préalable à réaliser sur le cuir qui lui est livré par le tanneur, après avoir subi le traitement de surface selon l'invention. Par ailleurs, ce dernier n'implique pas un accroissement de coût pour le tanneur, car ce traitement remplace les opérations de finition qui étaient auparavant nécessaires pour obtenir l'aspect de surface et les propriétés mécaniques du cuir qui sont souhaités par le fabricant de chaussures.The shoe manufacturer thus has no prior operation to perform on the leather delivered to him by the tanner, after having undergone the surface treatment according to the invention. Furthermore, the latter does not imply an increase in cost for the tanner, since this treatment replaces the finishing operations which were previously necessary to obtain the surface appearance and mechanical properties of the leather which are desired by the shoe manufacturer. .

On supprime,pour la mise en place des semelles, l'opération de cardage ou de verrage, les rebuts de fabrication et également la nécessité de retouches tout en conservant la même versatilité quant aux modèles de chaussures fabriquées.We eliminate, for the establishment of soles, the carding or glassing operation, manufacturing waste and also the need for touch-ups while retaining the same versatility as for the models of shoes manufactured.

Selon un mode de réalisation de l'invention, le dépôt est formé à la surface du cuir par une multiplicité de couches superposées,dont chacune est choisie pour être adhérente à la couche sous-jacente.According to one embodiment of the invention, the deposit is formed on the surface of the leather by a multiplicity of superimposed layers, each of which is chosen to be adherent to the underlying layer.

A titre d'exemple, dans une première phase du procédé le cuir reçoit un préfond, avantageusement constitué par une émulsion de polyuréthane contenant des pigments et un agent de réticulation, sous une forme suffisamment diluée, comme présenté par les préfonds acryliques utilisés habituellement pour assurer sa bonne imprégnation dans le derme.By way of example, in a first phase of the process, the leather receives a prefond, advantageously constituted by a polyurethane emulsion containing pigments and a crosslinking agent, in a sufficiently diluted form, as presented by the acrylic prefonds usually used to ensure its good impregnation in the dermis.

Le procédé prévoit, avant l'apport du préfond, un retannage synthétique de la peau à l'aide des produits chimiques habituellement utilisés par le tanneur, tels que les dérivés phénoliques condensés sulfonés et anioniques, les esters phosphoriques et les esters de polyglycols, etc, à l'exclusion de tous produits d'origine végétale ou animale. La liaison entre le profond et.les fibres du cuir n'est pas alors seulement mécanique, mais l'adhésion se trouve considérablement augmentée par les liaisons chimiques du type hydrogène intervenant entre le liant polyuréthane du préfond et certains groupements fonctionnels du produit de retannage.The process provides, before the introduction of the prefond, a synthetic retanning of the skin using chemicals usually used by the tanner, such as condensed phenolic sulfonated and anionic derivatives, phosphoric esters and polyglycol esters, etc. , excluding all products of plant or animal origin. The bond between the deep and the fibers of the leather is then not only mechanical, but the adhesion is considerably increased by the chemical bonds of the hydrogen type occurring between the polyurethane binder of the prefond and certain functional groups of the retanning product.

Le procédé prévoit également qu'on pourra très avantageusement effectuer un ponçage de la fleur de la peau avant l'apport du préfond.The method also provides that it will very advantageously be possible to sand the skin flower before the introduction of the prelude.

Selon une seconde phase du procédé, la peau reçoit un "inter" qui a une composition analogue à celle du préfond, mais qui est d'une plus grande concentration tant en émulsion qu'en pigments, l'émulsion étant également additionnée de l'agent de réticulation.According to a second phase of the process, the skin receives an "inter" which has a composition similar to that of the foreground, but which is of a greater concentration both in emulsion and in pigments, the emulsion also being added with crosslinking agent.

On soumet la peau ainsi traitée à un premier placage à chaud pour assurer une complète réticulation chimique des deux couches ainsi apportées et aussi une adhésion et une cohésion parfaites de l'ensemble cuir, préfond et inter, tout en préparant l'aspect de surface recherché pour la tige de la chaussure.The skin thus treated is subjected to a first hot plating to ensure complete chemical crosslinking of the two layers thus provided and also adhesion and cohesion perfect sion of the whole leather, prefund and inter, while preparing the desired surface appearance for the upper of the shoe.

On applique ensuite une couche de finition de surface qui est constituée d'une dissolution en phase solvant d'une résine polyuréthane, de pigment et d'un agent de réticulation. L'aspect de cette finition peut être brillant ou satiné. Celle-ci adhère bien au cuir en raison du traitement préalable de ce dernier.A surface finish layer is then applied, which consists of a solvent-phase dissolution of a polyurethane resin, pigment and a crosslinking agent. The appearance of this finish can be glossy or satin. It adheres well to leather due to the prior treatment of the latter.

Enfin, on procède à un second placage à chaud suivi d'un grainage donnant au cuir son aspect de surface définitif.Finally, we proceed to a second hot plating followed by graining giving the leather its final surface appearance.

Le cuir est prêt pour la livraison par le tanneur au fabricant de chaussures.The leather is ready for delivery by the tanner to the shoe manufacturer.

Dans ce qui suit, on donne quelques exemples de traitement d'un cuir permettant la fabrication de la chaussure en y solidarisant une semelle sans autre traitement préalable du cuir.In what follows, we give some examples of treatment of a leather allowing the manufacture of the shoe by joining a sole therewith without any other prior treatment of the leather.

Exemple de préfondPreliminary example

La composition est la suivante (en poids)

Figure imgb0001
On applique 4 à 6 g de produit sec par pied carré de cuir.The composition is as follows (by weight)
Figure imgb0001
 Apply 4 to 6 g of dry product per square foot of leather.

Exemple d' " inter"Example of "inter"

La composition est la suivante(en poids):

Figure imgb0002
The composition is as follows (by weight):
Figure imgb0002

On applique 9 à 12 g de produit sec par pied carré de cuir ayant reçu le préfond.9 to 12 g of dry product are applied per square foot of leather which has received the prefond.

Exemple de finition de surfaceExample of surface finish

La composition est la suivante (en poids):

Figure imgb0003
The composition is as follows (by weight):
Figure imgb0003

On applique 2 à 3 g de produit sec par pied carré de cuir ayant reçu le préfond et l'inter.2 to 3 g of dry product are applied per square foot of leather having received the prefond and the inter.

Placage à chaud : Il est effectué sur un matériel classique de tannerie (presses chauffantes) à 100°C pendant 2 à 4 secondes.Hot plating: It is carried out on conventional tanning equipment (heating presses) at 100 ° C for 2 to 4 seconds.

Les exemples ci-dessus n'ont aucun caractère limitatif.The above examples are in no way limiting.

Par ailleurs, on sait que, pour des raisons d'ordre économique, on utilise fréquemment dans la fabrication de tiges de chaussures, à la place du cuir naturel, des matériaux synthétiques ou des matériaux composites dont au moins la partie tournée vers l'extérieur est synthétique, auxquels on cherche à donner l'apparence du cuir naturel.Furthermore, it is known that, for economic reasons, synthetic materials or composite materials are used frequently in the manufacture of shoe uppers, instead of natural leather, at least the part facing outwards. is synthetic, which we seek to give the appearance of natural leather.

On réalise notamment, par le procédé dit "haute fréquence", des tiges de chaussures présentant l'aspect extérieur du cuir à partir de matériaux en feuilles dont au moins la face tournée vers l'extérieur n'est pas en cuir, tels que des tissus enduits de chlorure de polyvinyle ou des plastisols doublés d'un tissu ou d'un cuir refendu préalablement encollé.In particular, by the so-called "high frequency" process, shoe uppers with the external appearance of leather are produced from sheet materials of which at least the face facing outwards is not of leather, such as fabrics coated with polyvinyl chloride or plastisols lined with a fabric or split leather previously glued.

A cet effet, on prend par exemple, au moyen d'un élastomère de silicone réticulable, l'empreinte d'un modèle obtenu en mettant à plat une tige de chaussure en cuir provenant du désassemblage d'une chaussure. On place une feuille du type ci-dessus mentionné à laquelle on désire donner l'apparence du cuir naturel dans le moule ainsi réalisé et on fait traverser la feuille par un courant électrique à haute fréquence, lequel provoque un ramollissement ou une fusion de la feuille, dont la surface épouse alors les irrégularités de la paroi du moule et acquiert ainsi la configuration de surface de la tige en cuir naturel dont on a pris l'empreinte.To this end, for example, by means of a crosslinkable silicone elastomer, the imprint of a model obtained by flattening a leather shoe stem from the disassembly of a shoe is taken. A sheet of the type mentioned above is placed on which it is desired to give the appearance of natural leather in the mold thus produced and the sheet is passed through by a high-frequency electric current, which causes the sheet to soften or melt. , the surface of which then follows the irregularities of the mold wall and thus acquires the surface configuration of the natural leather upper which has been imprinted.

La mise en oeuvre d'un courant à haute fréquence permet également le thermosoudage, sur la face de la feuille tournée vers l'extérieur, d'appliques ou de renforts en un matériau ayant des propriétés diélectriques convenables.The use of a high frequency current also allows heat sealing, on the face of the sheet facing outwards, of appliques or reinforcements made of a material having suitable dielectric properties.

Ces appliques ou renforts sont habituellement mis en place dans des logements correspondants du moule, ces logements ayant été avantageusement ménagés par les empreintes d'appliques ou de renforts présents sur la tige en cuir naturel utilisée comme modèle.These sconces or reinforcements are usually placed in corresponding housings of the mold, these housings having been advantageously provided by the imprints of the app. ques or reinforcements on the natural leather upper used as a model.

Habituellement, la modification de la configuration de surface de la feuille et le thermosoudage sont réalisés au cours d'une même opération.Usually, the modification of the surface configuration of the sheet and the heat sealing are carried out in the same operation.

Pour la mise en oeuvre de ce procédé, on dispose le moule contenant la feuille à traiter et, le cas échéant, les appliques ou renforts à mettre en place, entre deux plaques conductrices de l'électricité et on fait passer un courant à haute fréquence entre les deux plaques à travers le moule et son contenu.For the implementation of this process, the mold containing the sheet to be treated and, if necessary, the appliques or reinforcements to be placed, are placed between two electrically conductive plates and a high frequency current is passed through. between the two plates through the mold and its contents.

Ce procédé, très peu coûteux, permet de fabriquer des tiges de chaussures ayant l'aspect du cuir et éventuellement munies d'appliques et/ou renforts dans des conditions particulièrement économiques.This process, very inexpensive, makes it possible to manufacture shoe uppers having the appearance of leather and possibly provided with appliques and / or reinforcements under particularly economical conditions.

Malgré les efforts accomplis dans ce domaine, on n'a pas pu jusqu'à présent, en utilisant un courant à haute fréquence, modifier la configuration de surface du cuir, ce terme désignant ici exclusivement le cuir naturel par opposition aux produits de synthèse.Despite the efforts made in this area, it has not been possible until now, using a high frequency current, to modify the surface configuration of the leather, this term designating here exclusively natural leather as opposed to synthetic products.

Quant à la solidarisation d'appliques et/ou renforts de surface discontinue sur des tiges de chaussures en cuir en mettant en oeuvre un courant à haute fréquence, elle est actuellement matériellement impossible à réaliser.As for the joining of discontinuous surface reinforcements and / or reinforcements on leather shoe uppers by implementing a high frequency current, it is currently physically impossible to achieve.

Le mot "tige" est employé ici pour désigner aussi bien une partie de chaussure terminée qu'une feuille découpée destinée à constituer, après mise en forme, cette partie de chaussure.The word "upper" is used here to denote both a part of the finished shoe and a cut sheet intended to constitute, after shaping, this part of the shoe.

Un autre but de l'invention est alors de permettre l'application, aux tiges de chaussures en cuir, du procédé haute fréquence, et ceci avec les mêmes avantages économiques que ceux qu'il présente dans son application connue à des tiges en matériaux synthétiquesAnother object of the invention is then to allow the application, to the uppers of leather shoes, of the high frequency process, and this with the same economic advantages as those which it presents in its known application to uppers of synthetic materials

Or, il a maintenant été constaté que,d'une manière surprenante,il est possible, grâce à un dépôt formé.à la surface du cuir, comme défini ci-dessus, non seulement d'obtenir une liaison entre le cuir 3t une semelle aussi bonne que celle obtenue en éliminant partielLement la fleur (épiderme) du cuir, mais aussi d'obtenir, par le procédé haute fréquence, une modification de la configuration de surface d'un tel dépôt d'une part,et son adhésion directe,sans traitement mécanique ni intervention d'adhésifs, à des appliques )u des renforts d'autre part.Now, it has now been found that, surprisingly, it is possible, thanks to a deposit formed on the surface of the leather, as defined above, not only to obtain a bond between the leather 3 t a sole as good as that obtained by partially eliminating the flower (epidermis) of the leather, but also obtaining, by the high frequency process, a modification of the surface configuration of such a deposit on the one hand, and its direct adhesion , without mechanical treatment or intervention of adhesives, to sconces) or reinforcements on the other hand.

Les appliques et/ou renforts peuvent être en des matériaux synthétiques présentant une perméabilité diélectrique convenable, par exemple les plastisols, le chlorure de polyvinyle et les copolymères vinyliques, comme dans la technique antérieure.The appliques and / or reinforcements can be made of synthetic materials having a suitable dielectric permeability, for example plastisols, polyvinyl chloride and vinyl copolymers, as in the prior art.

L'invention prévoit d'autre part de mettre en place des appliques et/ou renforts en cuir, après que leur face tournée vers . ce qui constituera la tige de chaussure, que celle-ci soit en un matériau en feuille non en cuir, ou en cuir traité, ait également été soumise au traitement de surface défini ci-dessus.The invention also provides for the application of leather appliques and / or reinforcements after their faces are turned. what will constitute the shoe upper, whether the latter is made of a sheet material not of leather, or of treated leather, has also been subjected to the surface treatment defined above.

Il est également possible de réaliser un décor en relief sur la face destinée à être tournée vers l'extérieur des appliques et/ou renforts, c'est-à-dire leur face opposée à celle en contact avec la tige, en prévoyant des irrégularités de surface dans les évidements du moule.It is also possible to create a relief decoration on the face intended to be turned towards the outside of the appliques and / or reinforcements, that is to say their face opposite to that in contact with the rod, by providing surface irregularities in the recesses of the mold.

Lorsque les appliques et/ou renforts sont en cuir, il convient alors que la face à décorer ait également subi le traitement de surface décrit plus haut. Un tel décor est par exemple une imitation de coutures, obtenue en prenant l'empreinte d'un modèle comportant des appliques et/ou renforts fixés par coutures.When the appliques and / or reinforcements are made of leather, the face to be decorated should also have undergone the surface treatment described above. Such a decoration is for example an imitation of seams, obtained by taking the imprint of a model comprising appliques and / or reinforcements fixed by seams.

L'invention prévoit, dans la mise en oeuvre du procédé haute-fréquence pour tenir compte du fait que la résistivité du cuir est fonction des conditions de tannage et du degré hygrométrique,et peut être très élevée, de compenser la résistivité du cuir en réduisant celle du moule, par exemple en incorporant au matériau constitutif de ce dernier des particules conductrices telles que des particules de poudre métallique.The invention provides, in the implementation of the high-frequency process to take into account the fact that the resistivity of the leather is a function of the tanning conditions and the humidity level, and can be very high, to compensate for the resistivity of the leather by reducing that of the mold, for example by incorporating into the constituent material of the latter conductive particles such as metal powder particles.

Il importe en outre de maintenir le moule sous pression pendant le passage du courant et pendant le refroidissement.It is also important to keep the mold under pressure during current flow and during cooling.

Une tige de chaussure ayant subi le traitement de surface selon l'invention(et, le cas échéant, un traitement de façonnage par haute-fréquence)peut être directement solidarisée à une semelle, soit qu'elle soit montée sur une forme faisant partie d'un moule qui reçoit la semelle en PU, TR, PVC, etc, par injection, comme habituel, soit que, sur une forme, une semelle fabriquée antérieurement y soit rapportée par collage ou soudage. Dans l'un et l'autre cas, aucun traitement du cuir par le fabricant de chaussures n'est nécessaire et, en particulier, ni verrage ni cardage, et l'adhésion de la semelle a lieu sur toute la surface en contact avec le cuir, dans le cas d'une semelle injectée,ou sur toute la surface du cuir qui aura reçu la colle,dans le cas d'une semelle collée ou soudée.A shoe upper having undergone the surface treatment according to the invention (and, where appropriate, a high-frequency shaping treatment) can be directly secured to a sole, either that it is mounted on a form forming part of 'A mold which receives the sole in PU, TR, PVC, etc., by injection, as usual, either that, on a form, a previously manufactured sole is attached to it by bonding or welding. In either case, no treatment of the leather by the shoe manufacturer is necessary and, in particular, no glazing or carding, and the adhesion of the sole takes place over the entire surface in contact with the leather, in the case of an injected sole, or over the entire surface of the leather which will have received the glue, in the case of a glued or welded sole.

L'expérience montre que l'adhésion de la semelle à un tel cuir constitutif d'une tige simplement découpée, non verrée ni cardée, est au moins aussi bonne que celle qui était obtenue après cardage ou verrage.Experience shows that the adhesion of the sole to such a leather constituting a simply cut upper, not locked or carded, is at least as good as that obtained after carding or locking.

La fabrication de la chaussure est simplifiée. Les rebuts sont évités ainsi que les retouches.The manufacture of the shoe is simplified. Rejects are avoided as well as rework.

Le prix de revient de l'ensemble est réduit.The cost price of the set is reduced.

L'invention envisage des modifications par rapport au traitement de surface décrit dans les exemples.The invention contemplates modifications with respect to the surface treatment described in the examples.

Il est en particulier possible, et même avantageux dans le cas où le cuir doit être ensuite façonné au moyen d'un courant haute-fréquence, de supprimer les opérations de placage à chaud et/ou d'augmenter la quantité du produit destiné à former l'une au moins des couches successives, par exemple la seconde couche appelée inter, de façon à obtenir un relief plus accentué sur la tige de chaussure.It is in particular possible, and even advantageous in the case where the leather must then be shaped by means of a high-frequency current, to eliminate the hot plating operations and / or to increase the quantity of the product intended to form at least one of the successive layers, for example the second layer called inter, so as to obtain a more accentuated relief on the shoe upper.

L'invention prévoit également que le traitement de la face du cuir destinée à être tournée vers l'extérieur comprend l'application non pas de trois couches,comme décrit ci-dessus, mais de deux couches seulement, le préfond ou l'inter étant omis. Un tel traitement est prévu, que le cuir ainsi traité soit destiné ou non à être soumis ultérieurement au traitement de façonnage par haute-fréquence.The invention also provides that the treatment of the face of the leather intended to be turned towards the exterior comprises the application not of three layers, as described above, but of only two layers, the prelude or the inter being omitted. Such treatment is provided, whether or not the leather thus treated is intended to be subjected subsequently to the high-frequency shaping treatment.

L'invention prévoit aussi un traitement de surface du cuir qui comporte l'application sur le cuir d'une seule couche, alors relativement importante, de préfond pour permettre un façonnage du cuir analogue à celui du cuir sur lequel on a appliqué trois couches successives comme décrit plus haut.The invention also provides a surface treatment of the leather which comprises the application to the leather of a single layer, then relatively large, of prefund to allow a shaping of the leather analogous to that of the leather on which three successive layers have been applied as described above.

L'invention vise également une tige de chaussure dont la fabrication fait appel au procédé de façonnage qui vient d'être défini, et une chaussure comprenant une telle tige.The invention also relates to a shoe upper, the manufacture of which uses the shaping process which has just been defined, and a shoe comprising such a upper.

L'invention s'applique aux différentes sortes de cuir utilisées dans l'industrie de la chaussure, aussi bien celles appelées "peau" que celles appelées "croûte". Elle trouve une application particulièrement intéressante pour la fabrication de chaussures de sport.The invention applies to the different kinds of leather used in the shoe industry, both those called "skin" and those called "crust". It finds a particularly interesting application for the manufacture of sports shoes.

L'invention s'applique également dans des domaines autres que celui des tiges de chaussures, notamment pour l'utilisation du cuir dans l'habillement, l'ameublement, la bagagerie, la sellerie. Elle prévoit également d'une manière générale l'application du traitement par haute fréquence pour l'assemblage d'éléments en cuir après que ceux-ci aient subi un traite ment de surface approprié ou pour leur soudage sur eux-mêmes après pliage.The invention also applies in fields other than that of shoe uppers, in particular for the use of leather in clothing, furniture, luggage, saddlery. It also generally provides for the application of high frequency treatment for the assembly of leather elements after they have undergone an appropriate surface treatment or for their welding to themselves after folding.

Claims (33)

1. Procédé de traitement de surface d'un cuir, notamment d'un cuir pour tige de chaussure, caractérise en ce qu'on applique sur le cuir une multiplicité de couches superposées dont la première est propre a adhérer au cuir, éventuellement après retannage de ce dernier, la ou les autres couches étant propres à adhérer à la couche sous-jacente, la couche externe étant propre à être solidarisée directement à une semelle.1. A method of surface treatment of a leather, in particular a leather for a shoe upper, characterized in that a multiplicity of superimposed layers is applied to the leather, the first of which is capable of adhering to the leather, possibly after retanning of the latter, the other layer or layers being able to adhere to the underlying layer, the external layer being suitable for being joined directly to a sole. 2. Procédé selon la revendication 1, caractérisé en ce qu'un retannage et un ponçage de la fleur du cuir sont effectués avant le dépôt de la première couche.2. Method according to claim 1, characterized in that a retanning and a sanding of the leather grain are carried out before the deposition of the first layer. 3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que le retannage préalable du cuir est effectué à l'aide de produits chimiques de synthèse tels que les dérivés phénoliques condensés sulfonés et anioniques, les esters phosphoriques et les esters de polyglycol, etc.. à l'exclusion de tous produits d'origine végétale ou animale.3. Method according to one of claims 1 and 2, characterized in that the preliminary retanning of the leather is carried out using synthetic chemicals such as the sulfonated and anionic condensed phenolic derivatives, the phosphoric esters and the esters of polyglycol, etc., excluding all products of plant or animal origin. .4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on dépose sur le cuir une première couche diluée, ou préfond, contenant des pigments de la couleur souhaitée..4. Method according to one of the preceding claims, characterized in that a first diluted, or primer, layer containing pigments of the desired color is deposited on the leather. 5. Procédé selon la revendication 4, caractérisée en ce qu'on applique ensuite une seconde couche, ou inter, plus concentrée que le préfond.5. Method according to claim 4, characterized in that one then applies a second layer, or inter, more concentrated than the prelude. 6. Procédé selon la revendication 5, caractérisé en ce que l'application de la seconde couche est suivie d'un placage.6. Method according to claim 5, characterized in that the application of the second layer is followed by plating. 7. Procédé selon l'une des revendications 4 à 6, caractérisé en ce que le préfond et le cas échéant l'inter sont constitués par une émulsion de polyuréthane contenant des pigments et un agent de réticulation.7. Method according to one of claims 4 to 6, characterized in that the prefond and if necessary the inter consist of a polyurethane emulsion containing pigments and a crosslinking agent. 8. Procédé selon la revendication 7, caractérisé en ce que la structure chimique du liant polyuréthane du préfond est choisie de telle manière que la liaison mécanique entre les fibres du cuir et le liant soit considérablement augmentée par adhésion spécifique due à la formation de liaisons chimiques du type hydrogène entre le liant polyuréthane et des groupements fonctionnels du produit de retannage.8. Method according to claim 7, characterized in that the chemical structure of the polyurethane binder of the prefond is chosen so that the mechanical bond between the leather fibers and the binder is considerably increased by specific adhesion due to the formation of chemical bonds of the hydrogen type between the polyurethane binder and functional groups of the retanning product. 9. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il comporte le dépôt d'une couche de finition propre à donner au cuir l'aspect de surface souhaité brillant ou satiné.9. Method according to one of the preceding claims, characterized in that it comprises the deposition of a finish layer capable of giving the leather the desired surface appearance of gloss or satin. 10. Procédé selon la revendication 9, caractérisé en ce que la couche de finition est constituée par une dissolution en phase solvant d'une résine polyuréthane, de pigments et d'un agent de réticulation.10. Method according to claim 9, characterized in that the finishing layer consists of a dissolution in solvent phase of a polyurethane resin, pigments and a crosslinking agent. 11. Procédé selon l'une des revendications 9 et 10, caractérisé en ce que l'application de la couche de finition est suivie d'un placage et d'un grainage.11. Method according to one of claims 9 and 10, characterized in that the application of the finishing layer is followed by plating and graining. 12. Procédé selon l'une des revendications 6 et 11, caractérisé en ce que les placages ont lieu a chaud.12. Method according to one of claims 6 and 11, characterized in that the plating takes place hot. 13.Procédé de façonnage du cuir, caractérisé en ce qu'on traite d'abord superficiellement le cuir par le procédé selon l'une des revendications précédentes et en ce qu'on applique ensuite au cuir ainsi traité un traitement de façonnage par un courant haute fréquence.13. Leather shaping process, characterized in that the leather is first treated superficially by the method according to one of the preceding claims and in that a current shaping treatment is then applied to the leather thus treated high frequency. 14.Procédé selon la revendication 13, caractérisé en ce que le façonnage comporte la formation de creux ou reliefs.14. Method according to claim 13, characterized in that the shaping includes the formation of hollows or reliefs. 15. Procédé selon la revendication 14, caractérisé en ce qu'on modifie la configuration de surface du cuir par ramollissement ou fusion superficiel au moyen du courant haute fréquence, sur sa face ayant subi ledit traitement de surface.15. The method of claim 14, characterized in that the surface configuration of the leather is modified by softening or surface fusion by means of high frequency current, on its face having undergone said surface treatment. 16. Procédé selon l'une des revendications 13 à 15, caractérisé en ce que le façonnage comporte l'apport par soudage d'appliques ou renforts.16. Method according to one of claims 13 to 15, characterized in that the shaping comprises the contribution by welding of appliques or reinforcements. 17. Procédé selon la revendication 16, caractérisé en ce qu'on soude directement, au moyen du courant haute fréquence, sans opérations mécaniques préalables et sans intervention d'adhésifs,sur la face du cuir ayant subi ledit traitement de surface, des appliques et/ou renforts en matériaux synthétiques présentant une perméabilité diélectrique convenable.17. The method of claim 16, characterized in that it is welded directly, by means of high frequency current, without prior mechanical operations and without the intervention of adhesives, on the face of the leather having undergone said surface treatment, appliques and / or reinforcements of synthetic materials having a suitable dielectric permeability. 18· Procédé selon l'une des revendications 16 et 17, caractérisé en ce qu'on soude au cuir des appliques et/ou renforts en matériaux choisis parmi les plastisols, le chlorure de polyvinyle et les copolymères vinyliques.18 · Method according to one of claims 16 and 17, characterized in that the leather is applied to the appliques and / or reinforcements in materials chosen from plastisols, polyvinyl chloride and vinyl copolymers. 19. Procédé selon l'une des revendications 16 à 18, caractérisé en ce qu'on soude au cuir des appliques et/ou renforts en cuir dont la face à souder a également été soumise au traitement de surface selon l'une des revendications 1 à 12.19. Method according to one of claims 16 to 18, characterized in that leather appliques and / or leather reinforcements are welded to the leather whose face to be welded has also been subjected to the surface treatment according to one of claims 1 at 12. 20. Procédé selon l'une des revendications précédentes, caractérisé en ce que le cuir a été préparé pour son utilisation en tant que tige de chaussure.20. Method according to one of the preceding claims, characterized in that the leather has been prepared for its use as a shoe upper. 21. Procédé de façonnage d'une feuille en un matériau différent du cuir, caractérisé en ce qu'on y soude par haute fréquence des appliques et/ou renforts en cuir ayant subi au préalable le traitement selon l'une des revendications 1 à 12.21. A method of shaping a sheet of a material different from leather, characterized in that it is welded by high frequency to the appliques and / or leather reinforcements having previously undergone the treatment according to one of claims 1 to 12 . 22. Procédé selon la revendication 21, caractérisé en ce que la feuille a été préparée pour son utilisation en tant que tige de chaussure.22. Method according to claim 21, characterized in that the sheet has been prepared for its use as a shoe upper. 23. Procédé selon l'une des revendications 13 à 22, caractérisé en ce que le courant haute fréquence est appliqué dans un moule dont la paroi présente des irrégularités complémentaires de la configuration de surface à obtenir et/ou porte les appliques et/ou renforts à souder. 23 . Method according to one of claims 13 to 22 , characterized in that the high frequency current is applied in a mold, the wall of which has irregularities complementary to the surface configuration to be obtained and / or carries the appliques and / or reinforcements to be welded. . 24. Procédé selon la revendication 23, caractérisé en ce que le moule est réalisé en prenant l'empreinte d'un modèle de tige en cuir de chaussure à reproduire, préalablement mis à plat.24. Method according to claim 23, characterized in that the mold is produced by taking the imprint of a model of leather shoe upper to be reproduced, previously laid flat. 25. Procédé selon la revendication 23, caractérisé en ce que le moule est réalisé en élastomère de silicone.25. The method of claim 23, characterized in that the mold is made of silicone elastomer. 26.' Procédé selon l'une des revendications 23 à 25 , caractérisé en ce que des particules conductrices de l'électricité sont incorporées au matériau du moule.26. ' Method according to one of claims 23 to 25 , characterized in that electrically conductive particles are incorporated in the mold material. 27. Procédé selon l'une des revendications 23 à 26, caractérisé en ce que la paroi du moule présente des irrégularités en regard des appliques et/ou renforts de façon à réaliser un décor en relief sur la face de ceux-ci opposée à la feuille.27. Method according to one of claims 23 to 26, characterized in that the wall of the mold has irregularities facing the appliques and / or reinforcements so as to produce a relief decoration on the face of the latter opposite to the leaf. 28. Procédé selon l'une des revendications 19 et 21 et la revendication 27, caractérisé en ce que la face des appliques et/ou renforts en cuir en contact avec le moule a également été soumise au traitement superficiel selon l'une des revendications 1 à 12.28. Method according to one of claims 19 and 21 and claim 27, characterized in that the face of the appliques and / or leather reinforcements in contact with the mold has also been subjected to the surface treatment according to one of claims 1 to 12. 29. Procédé selon l'une des revendications 23 à 28, caractérisé en ce qu'on maintient le moule sous pression pendant le passage du courant et pendant le refroidissement.29. Method according to one of claims 23 to 28, characterized in that the mold is kept under pressure during the passage of the current and during cooling. 30. Procédé selon l'une des revendications précédentes, caractérisé en ce que ledit traitement de surface ne comporte pas de placage à chaud.30. Method according to one of the preceding claims, characterized in that said surface treatment does not include hot plating. 31. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on applique sur le cuir une couche unique relativement importante de préfond.31. Method according to one of the preceding claims, characterized in that a relatively large single layer of prelude is applied to the leather. 32. Tige de chaussure obtenue par la mise en oeuvre du procédé selon l'une des revendications précédentes.32. Shoe upper obtained by implementing the method according to one of the preceding claims. 33. Chaussure comprenant une tige selon la revendication 32.33. Shoe comprising an upper according to claim 32.
EP84402324A 1983-11-16 1984-11-14 Treating process for leather, particularly for leather shoe-uppers, shoe-uppers and shoes manufactured according to this process Expired - Lifetime EP0145560B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402324T ATE50124T1 (en) 1983-11-16 1984-11-14 METHOD OF WORKING LEATHER, IN PARTICULAR LEATHER SHOE UPPER, SHOE UPPER, AND SHOE MADE BY THIS METHOD.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8318232A FR2554689B1 (en) 1983-11-16 1983-11-16 METHOD FOR MANUFACTURING SKIN FOR CUTTING FOLLOWING UPPER SHOES TO BE SOLIDARIZED WITH SOLE
FR8318232 1983-11-16
FR8417139 1984-11-09
FR8417139A FR2573093B2 (en) 1984-11-09 1984-11-09 PROCESS FOR SHAPING LEATHER, IN PARTICULAR FOR A LEATHER SHOE SHOE, SHOE SHOE AND SHOE OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS

Publications (3)

Publication Number Publication Date
EP0145560A2 true EP0145560A2 (en) 1985-06-19
EP0145560A3 EP0145560A3 (en) 1985-09-18
EP0145560B1 EP0145560B1 (en) 1990-02-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402324A Expired - Lifetime EP0145560B1 (en) 1983-11-16 1984-11-14 Treating process for leather, particularly for leather shoe-uppers, shoe-uppers and shoes manufactured according to this process

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US (1) US4705586A (en)
EP (1) EP0145560B1 (en)
KR (1) KR880001826B1 (en)
AU (1) AU568171B2 (en)
BR (1) BR8407171A (en)
CA (1) CA1258953A (en)
DE (1) DE3481267D1 (en)
ES (1) ES8603252A1 (en)
MX (1) MX163029B (en)
NZ (1) NZ210229A (en)
OA (1) OA07866A (en)
PT (1) PT79502B (en)
WO (1) WO1985002095A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580908A1 (en) * 1985-04-27 1986-10-31 Sandoz Sa METHOD FOR MANUFACTURING SHOES WITH RODS COMPRISING A FINISHING COATING
FR2596065A1 (en) * 1986-03-21 1987-09-25 Kelian Stephane Sa METHOD FOR MANUFACTURING A LEATHER ARTICLE, IN PARTICULAR A SHOE

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8914514U1 (en) * 1989-12-09 1991-04-04 Schaefer, Helmut, Mercogliano, Avellino Shoe with pigskin upper
GB0407701D0 (en) * 2004-04-05 2004-05-12 Johnson Matthey Plc Adhesion promoting compound
US9241537B2 (en) 2013-01-15 2016-01-26 Nike, Inc. Spacer textile material with tensile strands that intersect
US9132601B2 (en) 2013-01-15 2015-09-15 Nike, Inc. Spacer textile material with tensile strands having multiple entry and exit points
US9474328B2 (en) 2013-01-15 2016-10-25 Nike, Inc. Spacer textile material with tensile strands in non-linear arrangements
US9226548B2 (en) 2013-01-15 2016-01-05 Nike, Inc. Spacer textile material with channels having multiple tensile strands
BR102016005628B1 (en) * 2016-03-15 2022-01-04 Orisol Do Brasil Indústria E Comércio De Máquinas Ltda CONFORMATION PROCESS OF POLYMERIC SOLE AND MIDDLE USING HIGH FREQUENCY
WO2020173532A2 (en) * 2019-02-26 2020-09-03 Ecco Sko A/S Method of manufacturing a footwear

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE594605C (en) * 1934-03-19 Carl Krug Dr Ing Composite material with high ductility
GB1354621A (en) * 1971-01-26 1974-06-05 Shoe & Allied Trades Res Ass Shoe-making
DE2336957A1 (en) * 1973-07-20 1975-02-06 Artos Meier Windhorst Kg One-step mfr. of (partly) synthetic shoe uppers - by combined shaping, heating and punching-out
FR2461008A1 (en) * 1979-07-10 1981-01-30 Quinn Peyrache Sa Leather which changes colour with temp. - prepd. by coating with cholesteric liquid crystals on an interlayer
JPS5753840A (en) * 1980-09-17 1982-03-31 Mitsubishi Electric Corp Tracking device
FR2507444A1 (en) * 1981-06-12 1982-12-17 Anver Moulds for laminating uppers to soles fused by dielectric heating - to eliminate an independent assembly stage

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US2828224A (en) * 1955-03-21 1958-03-25 Rohm & Haas Method of coating leather with polymers containing ureido groups and the resulting article
US3178310A (en) * 1962-03-01 1965-04-13 Du Pont Aqueous polyurethane coating emulsions
US3245827A (en) * 1964-01-02 1966-04-12 Phelan Faust Paint Mfg Company Polyurethane coated substrate and method of coating
US3298856A (en) * 1965-02-12 1967-01-17 Miljo Chemical Company Inc Methods of finishing leather, and products thereby obtained
US3761304A (en) * 1971-09-17 1973-09-25 A Hansson Treatment of leather
US4256809A (en) * 1979-02-02 1981-03-17 Rohm And Haas Company Ambient or low-temperature curable coatings for leather and other flexible substrates

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE594605C (en) * 1934-03-19 Carl Krug Dr Ing Composite material with high ductility
GB1354621A (en) * 1971-01-26 1974-06-05 Shoe & Allied Trades Res Ass Shoe-making
DE2336957A1 (en) * 1973-07-20 1975-02-06 Artos Meier Windhorst Kg One-step mfr. of (partly) synthetic shoe uppers - by combined shaping, heating and punching-out
FR2461008A1 (en) * 1979-07-10 1981-01-30 Quinn Peyrache Sa Leather which changes colour with temp. - prepd. by coating with cholesteric liquid crystals on an interlayer
JPS5753840A (en) * 1980-09-17 1982-03-31 Mitsubishi Electric Corp Tracking device
FR2507444A1 (en) * 1981-06-12 1982-12-17 Anver Moulds for laminating uppers to soles fused by dielectric heating - to eliminate an independent assembly stage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 98, no. 24, juin 1983, page 97, no. 200181v, Columbus, Ohio, US; & JP-A-57 053 840 (T. MITANI) 15-11-1982 *
JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION, vol. 73, no. 3, mars 1978, page 131, article 2, Cincinnati, Ohio, US; F. SAMLOT: "Method of finishing leather and the resultant product" & REV. TECH. INDS. CUIR., 68, 354-356, 1976 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580908A1 (en) * 1985-04-27 1986-10-31 Sandoz Sa METHOD FOR MANUFACTURING SHOES WITH RODS COMPRISING A FINISHING COATING
FR2596065A1 (en) * 1986-03-21 1987-09-25 Kelian Stephane Sa METHOD FOR MANUFACTURING A LEATHER ARTICLE, IN PARTICULAR A SHOE
EP0239482A1 (en) * 1986-03-21 1987-09-30 Stephane Kelian S.A. Process for the manufacture of a leather article, especially a shoe

Also Published As

Publication number Publication date
BR8407171A (en) 1985-10-08
AU3614084A (en) 1985-06-03
MX163029B (en) 1991-08-05
ES537732A0 (en) 1985-12-16
CA1258953A (en) 1989-09-05
KR850700104A (en) 1985-10-25
AU568171B2 (en) 1987-12-17
PT79502B (en) 1986-07-22
US4705586A (en) 1987-11-10
OA07866A (en) 1986-11-20
EP0145560B1 (en) 1990-02-07
EP0145560A3 (en) 1985-09-18
DE3481267D1 (en) 1990-03-15
WO1985002095A2 (en) 1985-05-23
WO1985002095A3 (en) 1985-07-18
ES8603252A1 (en) 1985-12-16
PT79502A (en) 1984-12-01
NZ210229A (en) 1988-01-08
KR880001826B1 (en) 1988-09-20

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