Institut National Polytechnique De Toulouse

Authentic Material

Centre National De La Recherche Scientifique

Institut National De Recherche Pour L'agriculture

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnment

Toulouse Tech Transfer

Universidad Nacional Autónoma De México

Centro De Investigaciones Energeticas Medioambientales Y Tecnologicas

Virginie Vandenbossche

Antoine Rouilly

Alain Couret

Luc Rigal

Margaux Jumeaux

Vincent Menny

David Neumeyer

Paul Verniolle

Jean Monchoux

Dimitri Mazars

Foad Naimi

Julio Mata-segreda

Jaana Maria Uusitalo

Eric Lombard

Xavier Cameleyre

Gérard Vilarem

Oscar Hernandez Melendez

Eduardo Vivaldo Lima

Julien Brault

Stéphane Guillouet

Mercedes Ballesteros

Eduardo Barzana Garcia

Martin Hernandez Luna

Aleta Duque

Paloma Manzanares

Matti Samuel Siika-aho

A process for preparing a powder of a material of natural origin, which includes a step of treating a substance containing at least 70% by weight of one or more leather wastes in particle form in a twin-screw extruder, wherein a temperature profile is applied that increases from an initial temperature of between 10 and 40° C. up to a maximum temperature of between 60 and 120° C., in the presence of water in an amount such that the weight ratio of water to substance is between 0.20 and 6.

Process for preparing a powder of material of natural origin

A method for producing a part in the form of a solid block from a natural material in particulate form containing scleroproteins. A phase of heating the natural material, under compression at a pressure greater than or equal to 30 MPa, to a temperature greater than or equal to the denaturation temperature of the scleroproteins contained in the material. A phase of cooling the material thus obtained to a temperature less than 100&#xb0; C., while maintaining the compression during at least a part of the cooling phase.

Method for producing a part from a particulate natural material and part obtained by such a method

Growing community of inventors

Sainte-Foy-d'Aigrefeuille, France

Virginie Vandenbossche