초록 ▼

This invention relates to improved aerodynamics in dry fiber web forming machines and particularly to airlays which form high quality webs. The invention includes a disperser roll for feeding fibers into the air stream and a second roll opposite to the disperser roll for balancing the disruptive eff

This invention relates to improved aerodynamics in dry fiber web forming machines and particularly to airlays which form high quality webs. The invention includes a disperser roll for feeding fibers into the air stream and a second roll opposite to the disperser roll for balancing the disruptive effects of long stationary walls and rotating members in the air duct. In one alternative arrangement of the invention, the fibers are also fed to the air stream by a second disperser roll opposite the first disperser roll.

대표청구항 ▼

[ We claim:] [1.] A process for forming a web of generally randomly oriented fibers comprising the steps of:dispersing fibers from a rotating disperser roll arranged generally adjacent to an air duct into an air stream within the air duct and wherein the rotating disperser roll creates a boundary la

[ We claim:] [1.] A process for forming a web of generally randomly oriented fibers comprising the steps of:dispersing fibers from a rotating disperser roll arranged generally adjacent to an air duct into an air stream within the air duct and wherein the rotating disperser roll creates a boundary layer of air which follows the periphery of the rotating disperser roll;directing the fibers and air stream to a consolidation screen to form a web of randomly oriented fibers on the consolidation screen; androtating a roll positioned generally adjacent and generally across the air duct from the disperser roll to provide a balancing effect on the air stream in the air duct which at least partially offsets the unbalancing effects of the disperser roll.