Hollow fiber membrane bundle

Patent metadata

Field	Value
Publication number	US-2021106950-A1
Application number	US-201816497607-A
Country	US
Kind code	A1
Filing date	Mar 28, 2018
Priority date	Mar 29, 2017
Publication date	Apr 15, 2021
Grant date	—

Abstract

The present disclosure relates to bundles of hollow fiber membranes and a process for their production. The bundles are used for the manufacture of filtration and/or diffusion devices, e.g., capillary dialyzers.

First claim

1 . A bundle of hollow fiber membranes enveloped in a plastic film sealed by a magnetic closure.

2 . The bundle of claim 1 , wherein the plastic film comprises a polyolefin.

3 . The bundle of claim 2 , wherein the polyolefin is polyethylene.

4 . The bundle of claim 1 , wherein the plastic film comprises a ferrimagnetic material.

5 . The bundle of claim 1 , wherein the ferrimagnetic material comprises a ferrite.

6 . The bundle of claim 4 , wherein the ferrite is a hard ferrite.

7 . The bundle of claim 5 , wherein the hard ferrite is selected from the group consisting of a strontium ferrite, a barium ferrite, or a cobalt ferrite.

8 . The bundle of claim 6 , wherein the hard ferrite is SrO*6Fe 2 0 3 .

9 . A process for preparing a bundle of hollow fiber membranes enveloped in a plastic film sealed by a magnetic closure, comprising the steps of wrapping a bundle of laterally aligned hollow fiber membranes with a sheet of plastic film comprising means for forming a magnetic closure; and sealing the film by a magnetic closure.

10 . The process of claim 9 , wherein the magnetically seal-able sheet of plastic film comprises a ferrimagnetic material and the magnetic closure is formed by overlapping edges of the sheet.

11 . The process of claim 9 , wherein the sheet of plastic film features ferrimagnetic zones along the edges of the sheet.

12 . The process of claim 9 , wherein the ferrimagnetic material is evenly distributed throughout the sheet of plastic film.

13 . The process of claim 10 , wherein the ferromagnetic material is a hard ferrite.

14 . A process for the production of a filtration and/or diffusion device, comprising transfer of a bundle according to claim 1 into a housing; and removal of the plastic film from the bundle.

15 . The process of claim 14 , further comprising opening the magnetic closure of the plastic film and reusing the sheet of plastic film in the production of another bundle of hollow fiber membranes enveloped in a plastic film sealed by a magnetic closure.

16 . The process of claim 10 , wherein the sheet of plastic film features ferrimagnetic zones along the edges of the sheet.

17 . The process of claim 10 , wherein the ferrimagnetic material is evenly distributed throughout the sheet of plastic film.

18 . The process of claim 11 , wherein the ferromagnetic material is a hard ferrite.

19 . The process of claim 12 , wherein the ferromagnetic material is a hard ferrite.

Assignees

• Gambro Lundia Ab

Inventors

• Baumeister Franz

Classifications

• B01D2313/04

  Specific sealing means · CPC title

• B01D2313/23

  Specific membrane protectors, e.g. sleeves or screens · CPC title

• B01D69/08

  Hollow fibre membranes (manufacture of hollow fibres D01D5/24, D01F1/08) · CPC title

• A61M2207/00

  Methods of manufacture, assembly or production · CPC title

• A61M2205/0272

  Electro-active or magneto-active materials · CPC title