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Laminates of asymmetric membranes

  • US 6,596,112 B1
  • Filed: 10/20/2000
  • Issued: 07/22/2003
  • Est. Priority Date: 10/20/2000
  • Status: Expired due to Term
First Claim
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1. A method of making a filter laminate, comprising the steps of:

  • 1) providing a first plurality of discreet layers of material, wherein at least one of the layers comprises an asymmetric membrane;

    2) contacting the layers to form a first stack, wherein each layer is adjacent at least one other layer in the stack;

    3) forming a bond between adjacent layers in the first stack, wherein the bond is formed after the formation of the material of the layers, thereby forming a first laminated stack layer;

    4) contacting the first laminated stack with a second layer of material; and

    5) forming a bond between the first laminated stack layer and the second layer, wherein the bond is formed after the formation of the material of the layers, thereby forming a filter laminate.

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