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US 9,527,040 B2Granted
Process for continuously washing a hollow fiber membrane for depleting residuals
AssigneeGambro Lundia AB
InventorsBernd Krause, Carina Zweigart, Christof Beck, Bernd Hertzler, Steffen Wagner, Joachim Loercher
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Abstract
Continuous processes for depleting residuals in hollow fiber membranes comprising polysulfone or polyethersulfone and polyvinylpyrrolidone by rinsing the membranes while compressing them in a pinching device comprising grooved rollers.
Claims19
A process for removing residuals from hollow fiber membranes by enforced convective transport of a washing fluid through a membrane wall, said process comprising the step of
- bringing the hollow fiber membranes to a bath of the washing fluid prior to mechanically compressing the hollow fiber membranes,
- wherein the hollow fiber membranes are rinsed with the washing fluid during mechanical compression, and
- wherein the hollow fiber membranes are guided through a pinching device comprising a roller bearing a groove having a width smaller than the outer diameter of the membranes, and
- guiding the hollow fiber membranes over the roller bearing the groove having a width smaller than the outer diameter of the membranes, the hollow fiber membranes being passed through the groove.
1 more element
Dependencies are inferred from the claim text.