Lafarge Platres

Siniat

Jean-Louis Laurent

Emmanuel Vial

Michel Rigaudon

Paul Jallon

Roger Arese

Frederic Peronnet

Jean Paul Solomut

Lionel Zbinden

Loic Martin

José Madeira

Stéphane Mettavant

Dominique Ribas

The subject of the invention is a novel plasterboard and its manufacturing processes. The novel board comprises, on one side, two first parallel feathered edges and, on the other side, two other, second, parallel feathered edges that are perpendicular to the first ones; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said other parallel feathered edges having a width of between 100 and 200 mm; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said second parallel feathered edges having a width such that the ratio of the width of the said second parallel feathered edges to the width of the said first parallel feathered edges is between 1.5 and 5.

Production line for hydraulic binder-based, tapered-edge boards

A production process is provided for a board of hydraulic binder with a facing on each of its sides. The process includes on one side first tapered parallel edges and on the same side or the other side, two second tapered parallel edges perpendicular to the first. The process also includes the use of a forming lath having at least two distal parts. The process can be used in a production line that includes a specific lath.

Production process for hydraulic binder-based boards with four tapered edges, production line of such boards

Production method for hydraulic binder-based, tapered-edge boards

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Bayas, France

Jean-Louis Laurent