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US 4,183,147 AGranted
Dehydration apparatus for fabrics
AssigneeKabushiki Kaisha San Giken
InventorYukiyoshi Kawaguchi
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AssigneeKabushiki Kaisha San Giken
InventorYukiyoshi Kawaguchi
Estimating the term…
A fabric drying method is disclosed in which compressed air or vapor is blown at high or supersonic speed from a slit toward a fabric sheet passing over the curved surface of a back-up roll or bar. By the impact pressure of said high speed air, moisture in the fabric sheet is blown out with a part of said high speed air passing through the fabric sheet and, when necessary, the remaining moisture is suctioned through ports in said back-up roll or bar. Apparatus for dehydrating fabrics, including a compressed air chamber with a slit discharge and a fabric support and back-up roll having a point of tangency with the fabric offset downstream from the slit with respect to the direction of fabric movement is also disclosed. The apparatus has means for exposing the fabric to negative air pressure at a point offset upstream from the slit with respect to the direction of movement of the fabric.
Dehydration apparatus for fabrics having means for moving the fabric as a web therethrough, said apparatus comprising:
The method of drying fabric as a continuously moving web, including the steps of passing said web in tangential contact with an arcuate surface having the cross-sectional shape of a segment of a circle, directing a jet of high pressure air against a surface of the fabric at a first point offset upstream with respect to the fabric's direction of movement from said point of tangential contact, said surface of the fabric facing the jet being the one facing away from said arcuate surface, and applying a vacuum to said fabric on the surface thereof opposite from said jet for withdrawing liquids from the opposite surface of the fabric at at second point closely adjacent to but offset upstream of said first point.
The method of drying fabric as a continuously moving web, including the steps of passing the web as a planar sheet upwardly past an arcuate surface having the cross-sectional shape of a segment of a circle and maintaining contact with said arcuate surface substantially only at the point of tangency between the web and surface, directing a jet of high pressure air against the surface of the fabric at a point offset upstream from said point of tangential contact with respect to the fabric's direction of movement, said jet being directed against the surface of the fabric facing away from said arcuate surface, confining a substantial portion of the air released by the jet to a narrow passage extending parallel to the fabric and in the direction from which the web approaches the surface for forcing liquid out of the fabric and in the direction of movement of the air in the passage.
Dependencies are inferred from the claim text.