Back to results
US 12,600,846 B2Granted
Polymeric substrate including a barrier layer
AssigneeINV Polypropylene, LLC
InventorsBilly R. Bodiford, Ross Michael Mahan
Life of this patent
Estimating the term…
Abstract
A polymeric substrate is disclosed. The polymeric substrate comprises a barrier layer including a polymeric material comprising about 50 wt. % or more of at least one polyolefin polymer and 50 wt. % or less of a hydrocarbon resin. The polymeric material exhibits a DTUL of 30° C. or more and a tensile modulus of 500 MPa or more and/or a flexural secant modulus of 500 MPa or more. The barrier layer has a thickness of greater than 200 μm to 6,500 μm. A shaped polymeric article comprising the polymeric substrate is also disclosed.
Claims18
A barrier layer comprising:
- a polymeric material comprising about 50 wt. % or more to about 95 wt. % or less of at least one polyolefin polymer and about 30 wt. % or more to about 50 wt. % or less of a hydrocarbon resin,
- wherein the polymeric material exhibits a DTUL of 70° C. or more and
- a flexural secant modulus of 2,000 MPa or more, and a tensile strength at yield of 40 MPa or more,
- wherein the barrier layer exhibits a percent haze of 10% or less when measured at a thickness of 25 mils in accordance with ASTM D1003,
- wherein the propylene polymer comprises a propylene homopolymer or a propylene polyolefin copolymer, and
- wherein the barrier layer has a thickness of greater than 400 um to 6,500 um, and
- wherein the barrier layer exhibits a water vapor transmission rate of 3.0 cm3/m2/day or less and an oxygen transmission rate of 60 cm3/100 in2/day or less.
4 more elements
A barrier layer comprising:
- a polymeric material comprising about 50 wt. % or more to about 95 wt. % or less of at least one polyolefin polymer and about 30 wt. % or more to about 50 wt. % or less of a hydrocarbon resin, wherein the polymeric material exhibits a DTUL of 70° C. or more and a flexural secant modulus of 2,000 MPa or more, and a tensile strength at yield of 40 MPa or more,
- wherein the barrier layer has a water vapor transmission rate of 3.0 cm3/m2/day or less and an oxygen transmission rate of 60 cm3/100 in2/day or less, and
- wherein the propylene polymer comprises a propylene homopolymer or a propylene polyolefin copolymer, wherein the barrier layer has a thickness of greater than 400 μm to 6,500 μm
- wherein the barrier layer exhibits a percent haze of 10% or less when measured at a thickness of 25 mils in accordance with ASTM D1003.
1 more element
Dependencies are inferred from the claim text.