Filter media and elements

Filter media and elements

  • CN 105,209,147 B
  • Filed: 03/05/2014
  • Issued: 07/03/2020
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. A filter media, comprising:

  • a meltblown filtration layer comprising meltblown fibers having an average diameter greater than 1.5 microns;

    wherein the melt-blown filter layer is 1.24kg/cm2Has a compressibility of more than 40% at a pressure of (a);

    a high efficiency glass-containing filtration layer comprising glass fibers having an average diameter of less than 2 microns and multi-component binder fibers; and

    a spunbond support layer;

    wherein the melt blown filtration layer is the most upstream layer and the filtration medium is water tight.

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