Method for the production of a filter membrane and filter membrane
AssigneeEwald Dörken AG
InventorsJörn Schröer, Daniel Placke
Life of this patent
Estimating the term…
Abstract
A method for the production of a filter membrane (1), whereby as starting material for the membrane production, at least one filler (3) and, optionally, at least one additional aggregate are admixed into a polymer membrane material (2), whereby the membrane material (4) that has the filler (3), and optionally the additional aggregate, is extruded to form a polymer film (5) that is charged with the filler (3), and optionally, the additional aggregate, after which the polymer film (5) is then stretched in a particularly monoaxial and/or biaxial manner for pore formation.
Claims16
1-11. (canceled)
Method for the production of a filter membrane, comprising the steps of:
- admixing at least one filler into a polymer membrane material as a starting material for membrane production,
- extruding the membrane material with the admixed at least one filler to form a polymer film that is charged with the at least one filler, and
- stretching the polymer film in at least one of a monoaxial and biaxial manner to form pores.
Dependencies are inferred from the claim text.