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Die, system, and method for coextruding a plurality of fluid layers

  • US 20100173031A1
  • Filed: 03/16/2010
  • Published: 07/08/2010
  • Est. Priority Date: 09/23/2008
  • Status: Active Grant
First Claim
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1. A die for coextruding a plurality of fluid layers, comprising:

  • a. a primary fluid passage;

    b. one or more distribution plates, each of said plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said plates being in fluid communication with said primary fluid passage and structured to deliver a layer of fluid to said primary fluid passage; and

    c. a microlayer assembly, comprising(1) a microlayer fluid passage, and(2) a plurality of microlayer distribution plates, each of said microlayer plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said microlayer plates being in fluid communication with said microlayer fluid passage and structured to deliver a microlayer of fluid to said microlayer fluid passage, said microlayer plates being arranged to provide a predetermined order in which the microlayers are delivered to said microlayer fluid passage to form a substantially unified, microlayered fluid mass in said microlayer fluid passage,wherein, said microlayer fluid passage is in fluid communication with said primary fluid passage such that said microlayered fluid mass flows from said microlayer fluid passage and into said primary fluid passage.

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