Method for the continuous production of nonwoven fabric, and associated nonwoven fabric production apparatus and nonwoven board

A nonwoven fabric manufacturing apparatus (1) comprising:

• a supply arrangement (5, 5′) for carrier fibers;
• a supply arrangement (5, 5′) for binder fibers;
• at least one opening arrangement or opening/loosening combing arrangement or at least one fiber opener (6, 6′) for combing, separating, loosening and detaching the carrier fibers and/or binder fibers;
• at least one mixing system (7, 7′) for mixing the loosened or detached fibers;
• a transport system
• with air suction (8, 8′) in the front section of the transport system for aligning and depositing the fibers consisting of air guide channels and pressure control nozzles (15-1-15-4)
• and
• with a heat source (9) in the rear section of the transport system with subsequent cooling source (10) for thermal bonding of the resulting nonwoven fabric,
• wherein
• the front section of the transport system with air suction (8, 8′) consists of opposing air-permeable conveyor belts (4, 4′) running at the same speed, and the loosened and mixed fibers are conveyed between the opposing conveyor belts, and the fibers are arranged in different density over the width and length of the nonwoven fabric on the transport belts perpendicular to the conveyor belts due to the air suction (8, 8′) (8-1-8-10) from the outside.