B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
B29B7/00—Mixing; Kneading
B29B7/80—Component parts, details or accessories; Auxiliary operations
B29B7/88—Adding charges, i.e. additives
B29B7/90—Fillers or reinforcements, e.g. fibres
B29B7/905—Fillers or reinforcements, e.g. fibres with means for pretreatment of the charges or fibres
Procede de fabrication de structures de revolution tridimensionnelles par aiguilletage de couches de materiau fibreux et materiau utilise pour la mise en oeuvre du procede