Patent ID: 11951717
Assignee: TRELLEBORG RETFORD LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A tile for reducing a radar wave reflection from a surface, the tile being a flexible surface sheet which is adhesively attachable to the surface,
wherein the flexible surface sheet reduces the radar wave reflection from the surface at a frequency, the frequency being a frequency between 1 gigahertz (GHz) and 12 GHz; and,
wherein the flexible surface sheet is a laminate of layers, wherein both a top surface and a bottom surface of the flexible surface sheet are adapted to be adhesively attachable to the surface, and
wherein the laminate of layers comprises:
a first layer comprising a polymer matrix into which a particulate filler is dispersed, wherein the particulate filler has radar absorbing properties; and
a second layer comprising a polymer matrix, the second layer adjoining the first layer,

wherein the first layer is located closer to the top surface of the flexible surface sheet than the second layer and the second layer is located closer to the bottom surface of the flexible surface sheet than the first layer;
wherein the flexible surface sheet is either
adapted such that in case the bottom surface of the flexible surface sheet is adhesively attached to the surface an S-band radar reflection of the surface is reduced, and in case the top surface of the flexible surface sheet is adhesively attached to the surface an X-band radar reflection of the surface is reduced, the S-band radar reflection having a frequency between 2 GHz and 4 GHz, the X-band radar reflection having a frequency between 8 GHz and 12 GHz; or
adapted such that in case the bottom surface of the flexible surface sheet is adhesively attached to the surface an S-band radar reflection of the surface is reduced, and in case the top surface of the flexible surface sheet is adhesively attached to the surface a C-band radar reflection of the surface is reduced, the S-band radar reflection having a frequency between 2 GHz and 4 GHz, the C-band radar reflection having a frequency between 4 GHz and 8 GHz.