Patent ID: 11945196
Assignee: PEAK NANO FILMS, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A sheet, comprising:
a plurality of layers, including at least one A layer and a plurality of B layers;
wherein the at least one A layer comprises virgin polymer;
wherein the virgin polymer is virgin low-density polyethylene or virgin polypropylene;
wherein the plurality of B layers comprise recycled polymer;
wherein the recycled polymer is recycled low-density polyethylene or recycled polypropylene;
wherein the recycled polymer includes post-consumer recycled material;
wherein each of the plurality of layers has a thickness between about 100 nm and about 3 microns;
wherein the plurality of layers includes a simple alternating pattern between the at least one A layer and the plurality of B layers;
wherein the sheet has a total thickness of between approximately 25 microns and 100 microns;
wherein the sheet is formed via a flat casting process;
wherein the sheet consists solely of the plurality of layers; and
wherein the sheet has a greater ultimate stress and a greater tensile modulus than a second sheet consisting of the virgin polymer and the recycled polymer, wherein the second sheet is substantially as thick as the sheet, and wherein the second sheet includes layers with a thickness greater than 10 microns or wherein the second sheet is an unlayered blend of the virgin polymer and the-recycled polymer, and wherein the total percentage weight of the virgin polymer and the recycled polymer is substantially the same between the sheet and the second sheet.