A method for preparing an insulating product based on wool includes an aeration step inside a device, the device including a chamber and at least one structure capable of generating a turbulent gaseous flow, during the aeration step. A stream of carrier gas is introduced into the chamber and a wool in the form of nodules or flakes is subjected to the turbulent flow of this carrier gas with entrainment in one sense in a direction A and in the opposite sense in a direction B that is the opposite to the direction A so that within the chamber there is at least in one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.

A method for preparing an insulating product based on wool includes an aeration step inside a device, the device including a chamber and at least one structure capable of generating a turbulent gaseous flow, during the aeration step. A stream of carrier gas is introduced into the chamber and a wool in the form of nodules or flakes is subjected to the turbulent flow of this carrier gas with entrainment in one sense in a direction A and in the opposite sense in a direction B that is the opposite to the direction A so that within the chamber there is at least in one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.

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.

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.

A method of manufacturing a synthetic bale, including the steps of heating a mixture of a first plurality of fibers with a second plurality of fibers to cause the first plurality of fibers and the second plurality of fibers to thermally bond with one another to create bonded fibers, directing the bonded fibers into a forming chamber, and outputting the bonded fibers into a sheath configured for use as a synthetic ground-based bale.

A method for manufacturing at least one of fibers and yarn from natural fibers includes providing at least one of technical fibers, elementary fibers, meso fibrils, and micro fibrils. Greater than or equal to 80% of the at least one of the technical fibers, the elementary fibers, the meso fibrils, and the micro fibrils are short natural fibers having a length that is less than or equal to 12.7 mm. The method includes creating at least one of a dispersion, a gel, a solution, a paste, and a dough including the at least one of the technical fibers, the elementary fibers, the meso fibrils and the micro fibrils; and spinning filaments of the at least one of fibers and yarn using the at least one of the dispersion, the gel, the solution, the paste, and the dough.