Blister protection for spiral wound elements
A method for preventing osmotic blistering in spirally-wound elements of semipermeable membrane sheet material ( 14 ) by applying an effective coating of a sealant ( 41, 43, 45 ) to the upstream surface of such membrane material in regions where such potential for blistering exists and thereby preve...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method for preventing osmotic blistering in spirally-wound elements of semipermeable membrane sheet material ( 14 ) by applying an effective coating of a sealant ( 41, 43, 45 ) to the upstream surface of such membrane material in regions where such potential for blistering exists and thereby preventing the permeation of liquid into the surface of the semipermeable membrane in these regions. |
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