Membrane laminate

  • US 10,322,376 B2
  • Filed: 11/15/2016
  • Issued: 06/18/2019
  • Est. Priority Date: 05/17/2007
  • Status: Active Grant
First Claim
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1. A process of forming a filtration device comprising providing a at least one porous ultrafiltration membrane selected from the group consisting of polysulfone, polyethersulfone, blends thereof and copolymers thereof;

  • providing a first and a second support plate wherein the first and second support plates are formed of PVDF, the support plates having a first surface facing each other and a second surface opposite the first surface of each plate and the plates having at least one port formed from the first surface to the second surface of each plate respectively;

    heat bonding the at least one ultrafiltration membrane to a first surface of the first support plate such that the PVDF melts and the molten PVDF infiltrates into pores in the membrane; and

    heat bonding the first surface of the first plate to the first surface of the second plate in an area outside of the area of the first surface of the first plate to which the membrane has been bonded.

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