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US 12,053,743 B2Granted
Formed sheet membrane element and filtration system
AssigneeFibracast Ltd.
InventorsIonel John Tomescu, Rafael Simon
Life of this patent
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Abstract
A piece of substrate material is formed under heat and pressure by a roller against a cavity or platen into a shaped substrate sheet having one or more depressions. Two substrate sheets are bonded together to form a substrate wherein the one or more depressions form one or more interior channels. The substrate is coated with a dope in a casting device having a guide portion corresponding to the shape of the substrate sheets and quenched to form a filtering membrane.
Claims4
A process for forming a permeate sheet, the process comprising steps of:
- a) heating a substrate material;
- b) shaping the heated substrate material to have a plurality of parallel spaced depressions separated by connectors, the depressions defined by the inner surface of the substrate material and corresponding ridges defined by the outer surface of the substrate material;
- c) bonding the inner surface of the substrate material at its connectors to another substrate material to provide a permeate sheet having one or more internal channels;
- and
- d) coating the permeate sheet by passing the permeate sheet in a generally downward direction through a coating die having a shape generally matching that of the permeate sheet.
2 more elements
Dependencies are inferred from the claim text.