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US 12,702,953 B2Granted
Hot melt adhesive for spiral wound membrane bonding
AssigneeHenkel AG & Co. KGaA
InventorsAdam D. Holliday, Dwight Heinrich, Michael M. Izzo, Nicole Smith
Life of this patent
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Abstract
Disclosed is a high-penetration hot melt adhesive for separation apparatus, such as thin film composite reverse osmosis filtration membranes. Also disclosed is a method of using these hot melt adhesives to bond these membranes to one or more other components of a separation apparatus.
Claims15
A separation apparatus including:
- a first composite membrane capable of separating a first constituent from a feed fluid mixture and having a barrier layer with a barrier surface and an opposing support layer with a support surface;
- a second composite membrane capable of separating the first constituent from the feed fluid mixture and having a barrier layer with a barrier surface and an opposing support layer with a support surface;
- a fluid permeable permeate carrier sheet having opposing first and second surfaces;
- wherein the first composite membrane and the second composite member are arranged to that the support surface of the first composite membrane is adjacent the fluid permeable permeate carrier sheet first surface and the support surface of the second composite membrane support surface is adjacent the fluid permeable permeate carrier sheet second surface;
- and
- a thermoplastic hot melt adhesive disposed in one or more discrete areas between the first composite membrane, the fluid permeable permeate carrier sheet and the second composite membrane, the adhesive forming a fluid impermeable bonded area between a portion of the first composite membrane support surface, the fluid permeable permeate carrier sheet and a portion of the second composite membrane support surface.
3 more elements
A separation apparatus including:
- a first composite membrane capable of separating a first constituent from a feed fluid mixture and having a barrier layer with a barrier surface and an opposing support layer with a support surface;
- a second composite membrane capable of separating the first constituent from the feed fluid mixture and having a barrier layer with a barrier surface and an opposing support layer with a support surface;
- a fluid permeable permeate carrier sheet having opposing first and second surfaces;
- wherein the first composite membrane and the second composite membrane are arranged so that the support surface of the first composite membrane is adjacent the fluid permeable permeate carrier sheet first surface and the support surface of the second composite membrane is adjacent the fluid permeable permeate carrier sheet second surface;
- and
- a thermoplastic hot melt adhesive disposed in one or more discrete areas of the first membrane layer, the carrier sheet and/or the second membrane layer.
3 more elements
Dependencies are inferred from the claim text.