A device may include a chamber configured to aerate a wool suitable for an insulating product; an air jet configured to introduce a turbulent gaseous flow into the chamber and entrain the wool within the chamber an entrainment of the wool in one sense in a direction A, and in a direction B that is the opposite of the direction A, such that within the chamber there is at least one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.

Disclosed is a chute carding machine used in a recycled carbon fiber nonwoven fabric manufacturing system, wherein the chute carding machine includes a main chamber oriented in a vertical direction and having an inner space formed therein, a mixed raw material introduction unit is installed at the uppermost part of an inner space of the main chamber, a first carding unit is installed under the mixed raw material introduction unit, a second carding unit is installed under the first carding unit, and a web shaping unit is installed under the second carding unit.

Disclosed is a chute carding machine used in a recycled carbon fiber nonwoven fabric manufacturing system, wherein the chute carding machine includes a main chamber oriented in a vertical direction and having an inner space formed therein, a mixed raw material introduction unit is installed at the uppermost part of an inner space of the main chamber, a first carding unit is installed under the mixed raw material introduction unit, a second carding unit is installed under the first carding unit, and a web shaping unit is installed under the second carding unit.