Saint-gobain Vetrotex France S.a.

Saint-gobain Vetrotex France

Vetrotex France

Jean-Paul Debalme

Gilles Rocher

Jacques Voiron

Dominique Loubinoux

Alexandre Cividino

Charles Saint-John

Gerard Gandre

A method for making a composite material by continuously depositing glass yarns on a moving substrate, at least 80 wt % of the yarns being blended yarns consisting of intimately mixed glass filaments and thermoplastic organic material filaments, and the amount of deposited glass being equal to over 40 wt % of the total amount of material deposited in the form of glass yarns and organic material; transferring the combined glass yarns and organic material to a number of areas where they are heated, compressed and cooled, and specifically heated and/or cooled while simultaneously being compressed; and cutting the resulting assembly into plates or winding it onto a revolving drum.

Process and device for the manufacture of a composite material

A method for filling a receiver with expanded fibers includes the steps of feeding at least one bundle of fibers from at least one roving; introducing the at least one bundle into a portable tool having a manual gripping element, a spray nozzle, an air supply device connected for supplying air to the nozzle, an extraction system configured to hold the at least one bundle and feed the at least one bundle to the nozzle, and an inlet guide positioned to guide the at least one bundle to the extraction system; and using the air supply device to expand the fibers of the at least one bundle in said spray nozzle, and spray the expanded fibers into the receiver.

Method and device for inserting fibers in expanded form into a cavity or depositing them on a surface

A hollow composite body includes a thermoplastic internal layer as a liner, a thermoplastic interlayer with embedded reinforcing fibers, and a thermoplastic external layer. The hollow body is made by furnishing the liner as a preform; introducing the preform into a mold, an inflatable bladder having been inserted into the preform; heating the preform and inflating the bladder to apply pressure against the internal wall of the preform. A space between the external wall of the preform and the internal wall of the mold is tailored to the thickness of the external layer of the hollow body to be obtained, so as to allow migration of the thermoplastic of the interlayer, and possible of the liner, beyond the interlayer.

Hollow composite body and its manufacturing process

Method for sealing a bared section ( ) in the wall of a hollow body based on a thermoplastic and on reinforcing fibers, the hollow body being especially intended for conveying or containing a pressurized fluid. The surface and the contours of the section ( ) are coated with a protective thermoplastic ( ) which is heated while it is being deposited and is compatible with the said thermoplastic of the hollow body in order to achieve complete adhesion.

Method for sealing a bared section of the wall of a hollow body made of a composite based on a reinforced thermoplastic

A device for coupling two pipes made of composite material based on a reinforced thermoplastic, includes a sleeve ( ) threaded on its internal wall and intended to be joined to an end ( ) of the first pipe ( ) and to an end ( ) of the second pipe ( ). A sealing element ( ) creates a seal in the coupling zone. A first end-piece ( ) is intended to be fastened to the end ( ) of the first pipe and a second end-piece ( ) is intended to be fastened to the end ( ) of the second pipe. Each end-piece has over at least part of its external surface ( ) a screw thread ( ) intended to engage in a complementary manner with the screw thread ( ) of the sleeve ( ).

Coupling device for two pipes made of composite material based on a thermoplastic

The present invention relates to a hollow body of revolution ( ), the wall of which comprises an internal first region (a) made, at least on its external periphery, of a single thermoplastic organic material A, and a second region having a first part (b), arranged so as to be continuous with the first region (a) and made of a thermoplastic material identical to the material A and of continuous glass yarns embedded in the said thermoplastic material, and a second part (c) forming the external periphery of the hollow body and made only of thermoplastic material. According to the invention, the wall has a volume void content V of less than 0.5%, preferably less than 0.2%.

Method for making hollow solid generated by rotation

A process for manufacturing composite sheets. The sheets are made of at least one ply of yarn with this ply having at least two materials with different melting points. The ply is introduced continuously into a zone where it is heated to a temperature between the two melting points and below the degradation temperature of the material having the lower melting point. This ply is then passed over at least one rotating bar heated to a temperature lying between the melting points and below the degradation temperature of the material with the lower melting point. The ply is then compressed on leaving the rotating bar and is cooled to form a composite web. The web is collected in the form of one or more composite plies.

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Chambery, France

Jean-Paul Debalme