Distributor layer

A crosslapper comprising:

• at least two endless conveyor belts which together define, for a web of fibers, a transportation path extending between an entry zone and a lapping slot;
• at least one lapping carriage bearing rollers for guiding the two conveyor belts and on which the lapping slot is formed;
• and
• an output apron which is movable beneath the lapping slot and along a direction which is substantially parallel to the axes of the guide rollers,
• the transportation path forming at least one turn against the external surface of one of the conveyor belts in a zone where the internal surface of said one conveyor belt rests on an internal guide roller, the web being exposed in a first angular area of the turn, then being limited radially outwards by a support zone belonging to the other conveyor belt in a second angular area of the turn,
• wherein with respect to the web path along said turn, said one conveyor belt is a radially internal conveyor belt and said other conveyor belt is a radially external conveyor belt, and
• wherein the support zone is guided according to a curvature ranging from convex with a radius greater than the internal guide roller, to concave substantially matching the external circumference of the web.