Multilayered coextruded geomembrane

  • US 5,221,570 A
  • Filed: 09/03/1991
  • Issued: 06/22/1993
  • Est. Priority Date: 09/03/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A multilayered coextruded geomembrane sheet material comprising:

  • two high density polyethylene outer layers; and

    one very low density polyethylene inner core layer.

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