Integrity testable filtration unit using supported hydrophilic porous membranes
AssigneeSartorius AG
InventorsPeter Konstantin, Oscar-Werner Reif, Jürgen Rupp, Peter Soelkner
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Abstract
The hydrophilicity of porous separation membranes is maintained by bonding the membranes to thermoplastic fiber substrates at least on their peripheries before the membrane peripheries are sealed in a thermoplastic resin. The membranes are capable of being integrity tested.
Claims15
A filtration module comprising a porous, entirely hydrophilic membrane sealed along its periphery by embedment in a thermoplastic resin and at least one porous thermoplastic polymeric substrate bonded to said membrane at least along said periphery and on at least one side of said membrane, whereby said filtration module is made by the process of the following, steps:
- (a) bonding said porous hydrophilic membrane at least along its said periphery and on its said at least one side to said at least one substrate, and
- (b) embedding said membrane in said thermoplastic resin,
- wherein step (a) precedes step (b) such that said hydrophilic membrane retains its hydrophilic nature.
Dependencies are inferred from the claim text.