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.

Abstract: A bi-component fiber (1), in particular for the production of spunbond fabrics (4), with a first component (2) and a second component (3), whereby the first component (2) has a first polymer as an integral part and the second component has a second polymer as an integral part. The polymer of one of the two components (2, 3) has been polymerized with a metallocene catalyst and the polymer of the other component (2, 3) has been polymerized with a Ziegler-Natta catalyst and subjected to a subsequent visbreaking treatment.

Abstract: A bi-component fiber (1), in particular for the production of spunbond fabrics (4), with a first component (2) and a second component (3), whereby the first component (2) has a first polymer as an integral part and the second component has a second polymer as an integral part. The first component (2) has an additive, and the second component (3) has a percentage by weight of the additive that is smaller than that in the first component (2).

Abstract: A bi-component fiber (1), in particular for the production of spunbond fabrics (4), has a first component (2) and a second component (3), whereby the first component (2) has a first polymer as an integral part and the second component has a second polymer as an integral part. It is provided that the difference between the melting points of the first component (2) and the second component (3) is less than or equal to 8° C.

Abstract: A bi-component fiber (1), in particular for the production of spunbond fabrics (4), with a first component (2) and a second component (3), whereby the first component (2) has a first polymer as an integral part and the second component has a second polymer as an integral part. It is provided that the difference between the melt-flow indices of the first component (2) and the second component (3) is less than or equal to 25 g/10 minutes and that the melt-flow indices of the first component (2) and the second component (3) in each case are less than or equal to 50 g/10 minutes.

Abstract: A method for the production of a hydrophilic polymer membrane (1), in particular for the production of a porous membrane for filtration or for use in functional textiles, whereby at least one hydrophilization additive (3) is used as a starting material for the membrane production, optionally, at least one additional aggregate, is/are admixed into an in particular hydrophobic polymer membrane material (2), whereby the membrane material (4) that has the hydrophilization additive (3) and optionally the additional aggregate is extruded to form a polymer film (5) that is charged with the hydrophilization additive (3) and optionally the additional aggregate, and whereby the polymer film (5) is stretched, in particular in a monoaxial and/or biaxial manner for pore formation.