Patent ID: 11904593
Assignee: ROGERS CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A multilayer material, comprising
a first polymer foam layer having
a density of less than 481 kg/m3,
a compression force deflection of 5 to 1,035 kPa, at 25% deflection determined in accordance with ASTM D3574-17, and
a thickness of less than 3.5 millimeters; and

a second polymer foam layer disposed on a first side of the first polymer foam layer, wherein the second polymer foam layer has a density of greater than 240 kg/m3, wherein the density of the second polymer foam layer is at least two times greater than the density of the first polymer foam layer,
wherein the thickness of the first polymer foam layer is at least two times greater than the thickness of the second polymer foam layer;
wherein each of the first polymer foam layer and the second polymer foam layer comprises a flame retardant composition, and
wherein the multilayer material has
a thickness of 3.5 millimeters or less, and

a UL-94 rating of V1, HF1, or a combination thereof.