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US 2021/0275970 A1Published application
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.
Claims13
A process for coating a permeate sheet having protrusions formed on the permeate sheet, the process comprising the steps of,
- a) locating the permeate sheet relative to a coating knife, the coating knife having a pattern corresponding to the permeate sheet;
- b) providing generally equal amounts of a dope simultaneously to both sides of the permeate sheet;
- and,
- c) drawing the permeate sheet through the coating knife at a controlled speed.
1 more element
Dependencies are inferred from the claim text.