Polyethylene membrane acoustic assembly
AssigneeW. L. Gore & Associates, Inc.
InventorsJason Strid, Guy Sbriglia, Thomas Tolt, Scott Zero
Life of this patent
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Abstract
An assembly includes an acoustic device. The acoustic device can include a polyethylene membrane. The polyethylene membrane can have first direction and a second direction, the second direction being orthogonal to the first direction. The polyethylene membrane can have a surface area per volume of at least 39×106/m. The polyethylene membrane can have a geometric mean tensile modulus of 250 to 750 MPa. The polyethylene membrane can have a maximum tensile modulus in the first direction of 440 to 915 MPa. The polyethylene membrane can have a maximum tensile modulus in the second direction of 275 to 515 MPa. The polyethylene membrane can be an expanded polyethylene membrane.
Claims15
An assembly comprising:
- an acoustic device, wherein the acoustic device comprises:
- a polyethylene membrane having:-
- a thickness of 0.5 μm to 14 μm, the thickness defining a thickness direction;
- a surface area per volume of at least 39×106/m;
- a geometric mean tensile modulus of 250 to 750 MPa;
- a maximum tensile modulus in a first direction of 440 to 915 MPa, wherein the first direction is orthogonal to the thickness direction;
- and
- a maximum tensile modulus in a second direction of 275 to 515 MPa, wherein the second direction is orthogonal to the thickness direction and the first direction.
Dependencies are inferred from the claim text.