Multilayer flame retardant barrier films and fabrics
AssigneeTriton Systems, Inc.
InventorsShah Apoorva, Giaya Arjan, Kim Yoojeong
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Abstract
The invention relates to polymer nanocomposites including either silica or non-platelet metal oxide particle and the use of these polymer noncomposites in the core layer of multilayer barrier films and laminates. The polymer nanocomposites provide high-barrier properties and low gas permeation.
Claims31
A polymer nanocomposite comprising, ethylene vinyl alcohol having from about 5 mol % to about 95 mol % ethylene, and substantially spherical silica particles, wherein the particles are about 1 nm to about 500 nm in diameter and about 0.5 wt % to about 2 wt % of the total polymer nanocomposite, wherein the polymer nanocomposite includes no organosilane, and wherein said polymer nanocomposite is a cast or blown film up to about 10 mils thick.
A barrier film comprising one or more layers of a polymer nanocomposite, said polymer nanocomposite comprising, ethylene vinyl alcohol having from about 5 mol % to about 95 mol % ethylene, and substantially spherical silica particles, wherein the particles are about 1 nm to about 500 nm in diameter and about 0.5 wt % to about 2 wt % of the total polymer nanocomposite, wherein the polymer nanocomposite includes no organosilane, and wherein said barrier film is a cast or blown film up to about 10 mils thick.
A multi-layer barrier film comprising:
- at least one core layer of a polymer nanocomposite having an upper surface and a lower surface, said polymer nanocomposite comprising, ethylene vinyl alcohol having from about 5 mol % to about 95 mol % ethylene, and substantially spherical silica particles, wherein the particles are about 1 nm to about 500 nm in diameter and about 0.5 wt % to about 2 wt % of the total polymer nanocomposite, wherein the polymer nanocomposite includes no organosilane, and wherein said core layer is a cast or blown film up to about 10 mils thick;
- and
- at least one second layer adjacent to the upper surface of the at least one core layer;
- and
- at least one third layer adjacent to the lower surface of the at least one core layer;
- wherein said at least one second layer and at least one third layer are independently comprised of a polymer other than the polymer nanocomposite of the core layer;
- and
- wherein adjacent layers are attached.
Dependencies are inferred from the claim text.