Formed sheet membrane element and filtration system
AssigneeFibracast Ltd.
InventorsIonel Tomescu, Rafael Simon
Life of this patent
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Abstract
A piece of substrate material is formed under heat and pressure against a cavity 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, if not formed with pre-coated substrate material, is coated with a dope and quenched to form a filtering membrane. A plurality of membranes may be placed side by side to form a bundle with permeating ends of the membrane, which are open to the one or more interior channels, separated by gaps or spacers. The bundle is connected to a header to produce a module. The module can be assembled into a cassette.
Claims14
A device comprising,
- two sheets of a substrate material, each of the two sheets of substrate material having four edges, an inner surface extending between the four edges on one side of the sheet of substrate material and an outer surface extending between the four edges on the opposite side of the sheet of substrate material, at least one of the sheets of substrate material having depressions defined by its inner surface and corresponding ridges defined by its outer surface, the depressions extending to an edge of the at least one of the sheets of substrate material, the two sheets of substrate material having their inner surfaces bonded together along two of their four edges, which two edges are parallel to the depressions, and along one or more lines between the depressions,
- whereby the depressions form internal permeate channels between the two sheets of substrate material, the internal permeate channels being open to at least one of the edges of the at least one of the sheets of substrate material and;
- a filtration membrane material coated on the outer surfaces of the two sheets of substrate material.
Dependencies are inferred from the claim text.