Plant for producing a web-shaped product of fibers and powder
AssigneeM&J Fibretech A/S
InventorBirger Elmgaard Sørensen
Life of this patent
Estimating the term…
Abstract
This invention relates to a plant used to form an air-laid web of fibers and a powder on a running endless forming wire that is air-permeable and operates mainly horizontally, wherein the plant includes a suction unit positioned under the forming wire; a forming head with a perforated base positioned above the forming wire; at least one fiber feed duct using air flow from the fiber source to feed the fiber into the forming head; and at least one powder feed duct to feed powder by means of air flow from the powder source into the forming head.
Claims22
A plant for forming an air-laid web of fibers and powder comprising:
- an endless forming wire, wherein the wire is air-permeable and operates mainly horizontally;
- a suction unit positioned under the forming wire;
- a forming head positioned above the forming wire having a top and a perforated base, wherein at least one bushing is provided in the top;
- at least one fiber feed duct, wherein a first air flow carries a fiber source into a fiber inlet duct in the forming head;
- at least one powder feed duct, wherein a second air flow carries a powder source into the forming head;
- and
- at least one powder distributor located in the at least one powder feed duct, configured and dimensioned to divide the second air flow into a plurality of finer jets of air,
- wherein the plurality of finer jets of air are introduced into the forming head.
A device for producing a web of fibers and powder, comprising:
- a fiber feed duct for transporting a fiber feed;
- a powder feed duct;
- a powder distributor located in the powder feed duct to divide an air flow into a plurality of air flows;
- a forming head, having a perforated base, associated with the fiber feed duct and powder feed duct, capable of receiving and homogeneously mixing the plurality of air flows and fiber feed;
- and
- a continuous and air-permeable wire, upon which the homogenous mixture falls through the perforated base.
A method for forming a web of fibers and powder comprising:
- providing at least one fiber feed in a first air flow and at least one powder feed in a second air flow;
- dividing the second air flow into a plurality of finer jets of air, wherein the jets of air are guided into a forming zone;
- mixing the jets of air and the at least one fiber feed in the forming zone to form a homogeneous mixture, and
- directing the mixture downward onto a continuous and air-permeable wire.
Dependencies are inferred from the claim text.