To provide the friction material for the disc brake pad manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. The NAO friction material composition does not contain the copper component but contains, relative to the entire amount of the friction material composition, 5-9 weight % of the binder with 1-4 weight % of the silicone rubber modified phenol resin as a part of the binder, the fiber base, 1-4 weight % of a cashew dust as the organic friction modifier, 0.5-3 weight % of a fused silica with the average particle diameter of 15-40 m as the inorganic friction modifier, and 0.1-2 weight % of the electromelting zirconium silicate beads with the average particle diameter of 10-30 m as the lubricant.

In a method for curing mineral wool that is mixed with binder through microwaves, generating additional heat through installation of microwave active substances is performed through curing the binder material.

In a method for curing mineral wool that is mixed with binder through microwaves, generating additional heat through installation of microwave active substances is performed through curing the binder material.

The present invention relates to a fiber board product comprising fibers in an amount from 50.0 to 99.0 parts by weight (d/d), at least one particulate calcium carbonate-containing material in an amount from 1.0 to 50.0 parts by weight (d/d), at least one binder in an amount from 0.05 to 25.0 parts by weight (d/d), at least one wax in an amount from 0 to 5.0 parts by weight (d/d), wherein the sum of the fibers and the at least one particulate calcium carbonate-containing material is 100.0 parts by weight (d/d), a process for manufacturing such a fiber board product as well as an use of at least one particulate calcium carbonate-containing material having a weight median particle size d.sub.50 of 0.5 to 150.0 m as fiber replacement in a fiber board product, preferably in a high-density fiber (HDF) board, medium-density fiber (MDF) board, low-density fiber (LDF) board or particle board.

The present invention relates to a fiber board product comprising fibers in an amount from 50.0 to 99.0 parts by weight (d/d), at least one particulate calcium carbonate-containing material in an amount from 1.0 to 50.0 parts by weight (d/d), at least one binder in an amount from 0.05 to 25.0 parts by weight (d/d), at least one wax in an amount from 0 to 5.0 parts by weight (d/d), wherein the sum of the fibers and the at least one particulate calcium carbonate-containing material is 100.0 parts by weight (d/d), a process for manufacturing such a fiber board product as well as an use of at least one particulate calcium carbonate-containing material having a weight median particle size d.sub.50 of 0.5 to 150.0 m as fiber replacement in a fiber board product, preferably in a high-density fiber (HDF) board, medium-density fiber (MDF) board, low-density fiber (LDF) board or particle board.