| abstract |
The invention relates to a method for manufacturing a mat of mineral fibres (F), wherein the fibres (F) are formed and a sizing composition obtained from mixing a binder composition with dilution water is applied to the fibres (F), the fibres impregnated with the sizing composition are collected on an open-worked receiving device (52) provided with a fibre-receiving surface and, under the surface, at least one suction sheath (54), and the mat is thermally treated. The method according to the invention comprises a step of determining an optimal amount of dilution water according to the humidity of the air on the fiberising station (12), the humidity of the air drawn in and the flow of air drawn into the at least one suction sheath (54), and the amount of water desired in the mat at the outlet of the receiving chamber (50), and a step of adjusting the amount of dilution water according to the optimal amount thus determined. |