Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin

E.i. Dupont De Nemours and Company

Compagnie Generale Des Etablissments Michelin

Michelin Recherche Et Techniques S.a.

Sébastien Rigo

Emmanuel Custodero

Vincent Abad

Bastien Limozin

Jérémy Toussain

Jose Merino Lopez

Frédéric Pialot

Florian Vilcot

Richard Cornille

Magaly Brousseau

Christophe Chouvel

Gael Pataut

Gregor Hug

Daniel Beaulaton

Julien Thuilliez

Michel Ahouanto

Quentin P Pineau

Thibaud Pottier

Sebastien Noel

Aurore Lardjane

Thomas Simonelli

Sébastien Noel

Nicole Dajoux

Loïc Albert

Peter Laszlo Szekely

Vincent Lemal

Sylvain Petitjean

Damien Fombelle

Damien Van Der Zyppe

Guy Cagneaux

Adam J Van Der Lelij

Fabien Mondini

Clément Nagode

Sandrine Braud

Cecile Barbier

Benjamin I Kaplan

Fanny Hosdez

Xavier Brouwers

Jérémy Guillaumain

Gaël Pataut

Alain Chevalier

Patrice Rousseau

Jos Merino Lopez

Cécile Barbier

Benjamin Kaplan

An assembly () comprises: a first structure () formed by first filamentary elements (), a second structure () formed by second filamentary elements (), a supporting structure () comprising supporting filamentary elements linking the first filamentary elements () and the second filamentary elements (), and at least one filamentary securing element () interlaced with the first filamentary elements () and the second filamentary elements (), one of the ends () of the securing element () being free to slip relative to the first and second filamentary elements ().

Assembly for a tire comprising a three-dimensional fabric or knit and a securing element

An assembly () for a tire comprises a first structure (), a second structure () and bearing cord elements. The assembly comprises a gimped securing element () comprising a core () around which a gimp yarn () is wound. The core () exhibits an elongation at rupture Aand the gimp yarn () exhibits an elongation at rupture Asuch that: A<A=h/(E+e+e) and A>A=h/(E+e+e) in which h is the conformation height of the assembly, eis the thickness of the first structure (), eis the thickness of the second structure (), and E is the lock length.

Assembly for a tire, tire and associated manufacturing methods

The tire comprises a carcass ply connecting two beads via two sidewalls, the carcass ply being surmounted radially towards the outside of the tire by a crown reinforcing zone which is itself surmounted radially towards the outside of the tire by a tread, the crown reinforcing zone comprising a plurality of reinforcing strips arranged over at least one ply of strips. The strips are arranged so that they are juxtaposed and at an angle less than or equal to 15° with respect to the circumferential direction. Each reinforcing strip is made up of a laminate of at least 3 composite layers, each composite layer containing oriented fibers having a tensile modulus less than or equal to 30 GPa, which are parallel to one another and coated in a polymer matrix.

Tire comprising reinforcing elements in the form of laminated strips

A method for manufacturing (S) a subassembly () for a tire () comprising the following substeps: providing an assembly comprising a supporting structure () comprising supporting filamentary elements linking a first structure () of filamentary elements and a second structure () of filamentary elements, aligning (S) the first structure () and the second structure (), securely fixing (S) the first structure () onto the second structure () using a securing element (), and cutting (S) the assembly () along the securing element () so as to separate said securing element () from the rest of the assembly () and to obtain at least one subassembly () without securing element ().

Method for manufacturing a sub-assembly for a tire comprising a three-dimensional fabric or knitted material and using a securing element

A non-pneumatic wheel () comprises a crown reinforcing region () itself radially on the inside of a tread (), the crown reinforcing region () comprising a plurality of reinforcing strips () arranged in at least three layers of strips () arranged in such a way that a virtual axis C-C substantially perpendicular to the strips intersects at least two strips in any axial position of the virtual axis in the crown reinforcing region.

Non-pneumatic wheel comprising a circumferential reinforcement structure

The assembly () comprises: a woven first fabric () comprising filamentary warp elements () comprising first and second filamentary members, a woven second fabric (), a bearing structure () comprising filamentary bearing elements () connecting the woven first and second fabrics together. For a length at rest L of the woven first fabric (): for any elongation of the woven first fabric () less than or equal to (2&#x3c0;&#xd7;H)/L, the first filamentary member has a non-zero elongation and is not broken; there is an elongation of the woven first fabric (), less than or equal to (2&#x3c0;&#xd7;H)/L, and beyond which the second filamentary member is broken, in which H0&#xd7;K&#x2264;H where H0 is the distance between the woven first and second fabrics () when each filamentary bearing portion () is at rest, and K=

Assembly comprising a partially breakable fabric and a supporting structure

The assembly () comprises: a first structure () extending in a first overall direction (G), a second structure (), and a bearing structure () comprising filamentary bearing elements () comprising at least one filamentary bearing portion () extending between the first structure () and the second structure (), the first structure () being arranged such that, for a length at rest L of the first structure () in the first overall direction (G), the elongation at maximum force Art of the first structure in the first overall direction (G) satisfies: Art&#x2264;(2&#x3c0;&#xd7;H)/L, in which H&#xd7;K&#x2264;H where His the mean straight-line distance between an internal face () of the first structure () and an internal face () of the second structure () when each filamentary bearing portion () is at rest, and K=0.50.

Tire assembly comprising a breakable structure and a supporting structure

A reinforced product, which can be used in particular for the reinforcing of a finished rubber article, comprises one or more textile or metallic reinforcing threads, the said thread or threads being covered individually or collectively with a sheath comprising a sheathing composition comprising one or more block copolymers comprising at least one polyamide block and at least one polyolefin block, the sheathed thread or threads being themselves embedded in a rubber composition.

Reinforced product comprising a self-adhesive composite reinforcement containing a block copolymer

A process is provided for manufacturing a tire assemblage that includes a first woven or knitted fabric including first threadlike elements, a second woven or knitted fabric including second threadlike elements, and a bearing structure including bearing elements connecting the first and second woven or knitted fabric together. The process includes coating each first threadlike element with a layer of a first adhesive composition and coating each second threadlike element with a layer of a second adhesive composition, heat treating each coated first threadlike element and each coated second threadlike element to crosslink the first adhesive composition and the second adhesive composition, and assembling the bearing elements with each heat-treated and coated first and second threadlike element to form part or all of the tire assemblage.

Assembly intended for a tire and including woven or knitted fabric(s) including pre-adhered wire elements

A tire assembly includes an assemblage formed of first and second impregnated woven or knitted structures, a bearing structure, and at least one sacrificial holder. The first impregnated woven or knitted structure includes a first woven or knitted fabric and a first layer of a first polymeric composition. The second impregnated woven or knitted structure includes a second woven or knitted fabric and a second layer of a second polymeric composition. The bearing structure includes bearing elements connecting the first and second woven or knitted fabrics together. Each sacrificial holder is structured to hold temporarily the first and second impregnated structures in contact with each other, connecting the first and second woven or knitted fabrics together. When the first and second impregnated woven or knitted structures are separated from each other, each sacrificial holder breaks before any breakage of the bearing elements.

Assembly for tire including impregnated woven or knitted fabric(s) and a sacrificial holder

Bearing structure () has identical bearing elements () in tension outside contact patch (A) with the ground and in compression in the contact patch (A). Bearing elements () are filamentary and are connected to radially inner face () of radially outer structure of revolution () by radially outer fabric () and to radially outer face () of radially inner structure of revolution () by radially inner fabric (), respectively. Furthermore, mean surface density D of bearing elements () per unit area of radially outer structure of revolution (), expressed in 1/m, is at least equal to (S/S)*Z/(A*F), where S is area, in m, of radially inner face () of radially outer structure of revolution (), Sis connecting area, in m, of radially outer fabric () with radially inner face () of radially outer structure of revolution (), Z is nominal radial load, in N, A is area of contact with the ground, in m, and Fis the force at break, in N, of bearing element ().

Tire-type device for a vehicle

A reinforced product () comprises: an elastomer matrix (), several reinforcing elements () embedded in the elastomer matrix (), the reinforcing elements () being arranged side by side in a main direction (X), Each reinforcing element () comprises: several filamentary elements (), and at least one communal sheath collectively coating the filamentary elements () and comprising at least one layer of a thermoplastic polymer composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product () is less than or equal to 0.17, the mean minimum thickness of elastomer ODO and mean thickness E of the reinforced product () being measured in a direction substantially perpendicular to the main direction (X).

Thin reinforced product and tire comprising said product

A reinforced product () comprises: an elastomer matrix (), several reinforcing elements () embedded in the elastomer matrix (), the reinforcing elements () being arranged side by side in a main direction (X). Each reinforcing element () comprises: at least one filamentary element () comprising a single monofilament, and at least one sheath coating the filamentary elements () and comprising at least one layer of a thermoplastic polymer composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product () is less than or equal to 0.17, the mean minimum thickness of elastomer ODO and mean thickness E of the reinforced product () being measured in a direction (Y) substantially perpendicular to the main direction (X).

A reinforced product () comprises: an elastomer matrix (), several reinforcing elements () embedded in the elastomer matrix (), the reinforcing elements () being arranged side by side in a main direction (X). Each reinforcing element () comprises: at least one filamentary element, and at least one sheath coating the filamentary element and comprising at least one layer of a thermoplastic polymer composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product () is less than or equal to 0.17.

A composite reinforcer that can adhere directly to a diene rubber matrix is usable as a reinforcing element for a pneumatic tire. The composite reinforcer includes at least one reinforcing thread, such as a carbon steel cord. Covering each thread individually or several threads collectively is a layer of a thermoplastic polymer composition. The thermoplastic polymer composition includes at least one thermoplastic polymer have a glass transition temperature that is positive, a poly(p-phenylene ether) (PPE), and a functionalized unsaturated thermoplastic styrene (TPS) elastomer having a glass transition temperature that is negative. The TPS elastomer includes a functional group selected from: an epoxide group, a carboxyl group, an acid anhydride group, and an ester group. A process for manufacturing such a composite reinforcer is presented, as well as a process for producing a rubber article, especially a pneumatic tire, incorporating such a composite reinforcer.

Composite reinforcer sheathed with a layer of polymer that is self-adhesive to rubber

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Clermont-Ferrand, France

Sébastien Rigo