Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Societe Detechnologie Michelin

Armines

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Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels

Frédéric Pialot

Gilles Walrand

Jose Merino Lopez

Christophe Bessac

Bozena Voge

Albin Effernelli

Pierre Wiel

José Merino Lopez

Miguel Torres-Castellano

Damien Fombelle

Thomas Fabre

Didier Vasseur

Luc Bestgen

Sébastien Rigo

Michel Ahouanto

Gérard Bor

Alain Sevaille

Alain Faugeras

Pierre Lesage

Henri Hinc

Nathalie Coste

Olivia Cuscito

Marc Greiveldinger

Jacques Fages

Thomas Simonelli

Benoît Pourcher

Christian Geay

Franck Daumas

Bertrand Boisdon

Christophe Hombert

Martial Sauceau

Stephanie Verleene

Clement Dubois

Christophe De Lajudie

Gilles Mioche

Olivier Fuchs

Maxime Pras

Clément Dubois

Jean-Jacques Letourneau

Gérard Buvat

François Lallet

José´ Merino Lopez

Frédéric Ramz

Fabrice Surleau

Stephane Nebout

Miguel Torres-Catellano

Mathieu Delbos

Yu Shiraishi

Salvatore Pagano

Jean-Luc Veronnet

Stéphanie Brochet

Stéphane Nebout

A method for manufacturing a composite airtight layer () used in the composition of a tire () comprises: a film () made of thermoplastic material is heated such that the film is able to plastically deform; the film is deformed () with the aid of corrugating means, the thickness of the film () being in a range from 0.01 to 0.2 mm, and the film having corrugations with a pitch and amplitude chosen in a range from 0.1 to 10 mm so as to give the film a given elongation capacity; the film is cooled such that the corrugated film is no longer able to be plastically deformed; and the corrugated film is coated in a matrix () of elastomer material, so as to form a composite airtight layer ().

Method for manufacturing an airtight layer used in the composition of a tire

The cutting system is configured to cut a continuous strip which extends lengthwise in a longitudinal direction and widthwise between a first edge and a second edge into strips. The cutting system includes a drive device which imparts to the continuous strip a feed speed, a first cutting roller and a contrarotating second cutting roller that cooperate to cut the continuous strip across its full width. The first cutting roller is provided with a first helical blade and is driven in rotation A variable synchronizer makes it possible to select and to modify the synchronization ratio between the rotational speed of the first cutting roller and the non-zero forward speed of the continuous strip in such a way as to be able to adjust the cutting angle according to which the cross-section of the continuous strip is oriented with respect to the longitudinal direction of the continuous strip.

System for cutting strips using helical knives and corresponding cutting method

The manipulator device includes a pedestal and a carrying mechanism which carries a platform and which forms an articulated triangle comprising: a first arm borne by a first carriage with a first pivot link whose axis forms a first vertex of the triangle, a second arm borne by a second carriage with a second pivot link whose axis forms a second vertex of the triangle, a seat situated at the intersection of the first arm and of the second arm, which forms a third pivot link whose axis is parallel to the first pivot axis and the second pivot axis and forms a third vertex of the triangle. A module is provided for servocontrolling the translational movements of the first carriage and the second carriage with respect to the pedestal. A yaw orientation interface comprises a fourth pivot link, by which the platform is articulated on the seat, both relative to the first arm and relative to the second arm, about a fourth pivot axis which is coaxial to the third pivot axis.

Manipulator device having a triangular architecture and installation for manufacturing tires using such a manipulator device for placing strips

The reinforcing structure for a tire is in the form of a stratified assembly formed of two layers of reinforcing strips of completely connected cross section, and flattened in shape. According to the method, the strips of each layer are laid side by side in a main direction of laying. The strips of the first layer are spaced apart by a distance that is less than the width of the strips of the second layer and in such a way that the edges of the strips of the first layer overlap the edges of the strips of the second layer. The two layers of strips are separated by a layer of uncoupling rubber.

Method for producing a reinforcement structure for a tire

A process for manufacturing an article made of recovered rubber crumb is provided. According to the process:

Method for manufacturing articles made from crumb rubber

The method comprises the steps of a) forming a carcass composed of a cured rubber material and b) overmolding, on the carcass, at least one thermoplastic elastomer material in order to finish the pneumatic tire.

Method for manufacturing a pneumatic tire with an improved tread

The method includes the step of forming a carcass from at least one first material based on a thermoplastic elastomer. The method continues with the step of forming, on the carcass, at least bead zone from at least one second material based on a thermoplastic elastomer to form an assembly. The method proceeds with the step of forming, on the assembly an additional part from at least one third material based on a thermoplastic elastomer.

Method for manufacturing an improved pneumatic tire

A device is provided for conveying additive manufacturing container/tray assemblies or additive manufacturing trays, the conveying device including at least two chambers for conveying an additive manufacturing container/tray assembly, each conveying chamber including at least one opening allowing the entry/exit of an additive manufacturing container/tray assembly, and each opening being provided with a door for closing the conveying chamber in a sealed manner.

Device for conveying additive manufacture container/plate assemblies

A curing bladder () for a tire has a shape of revolution about a central axis and a flexible wall made of crosslinked rubber, the external surface of which is intended to come into contact with the internal surface of a green tire during curing, the external surface having a relief structure having a plurality of air evacuation channels. The relief structure has first channels forming air evacuation grooves () arranged at a distance of between 2 and 5 mm, and having a depth of between 0.4 and 1 mm, two adjacent grooves defining, between one another, an inter-groove zone () having second channels forming air channelling furrows () made so as to communicate with one another and with at least one of the grooves (), the furrows each having a depth of between 0.01 and 0.4 mm and being situated at a distance of between 0.2 and 1 mm from one another.

Curing membrane for a tire

An additive manufacturing facility operating in an automated and contained manner. The facility includes a containment chamber inside which a plurality of additive manufacturing machines is installed, each machine comprising a manufacturing chamber, inside the containment chamber, a supply device and a supply circuit for supplying the various machines of the facility with an additive manufacturing powder, a conveying device for conveying additive manufacturing container/tray assemblies comprising at least one conveying chamber circulating between the various machines, and (4) a cleaning device comprising at least one cleaning chamber for cleaning, in an automated and contained manner, the additive manufacturing trays in the cleaning chamber.

Additive manufacturing facility with successive nested confinement chambers

A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave () containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle ().

Method for producing rubber crumb, and rubber crumb

The curing bladder for a tire has a shape of revolution around a central axis and comprises a flexible wall made of crosslinked rubber. The surface of the wall is covered with a coating film made of a non-stick composition. When the bladder is non-inflated, the coating film has a variable thickness over the surface.

A method is provided for dry cleaning a plate used in an additive manufacturing process involving a powder. According to the method, unconsolidated powder is separated from a plate and collected by imposing vibrations on the plate and causing the plate to experience shocks.

Method for the dry-cleaning of additive manufacturing plates

The invention relates in particular to a machine () for additive manufacturing by the sintering or melting of powder () using an energy beam () acting on a powder layer () in a working zone (), said machine comprising a device for producing a layer of said powder, said device comprising:

Machine and process for powder-based additive manufacturing

A process and device continuously prepare a filled rubber masterbatch. The process comprises bringing into contact, in a mixing zone, a first liquid-phase flow and a second liquid-phase flow, the first flow being an elastomer emulsion, the second flow being an aqueous suspension of filler particles, such that one of the two flows emerges inside the other flow and that the two flows are transported at low pressure before they are brought into contact.

Method and device for producing a rubber mixture in a liquid phase

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Clermont-Ferrand, France

Frédéric Pialot