Sheet exhibiting dielectric or magneto-dielectric properties

Patent metadata

Field	Value
Publication number	US-2020168986-A1
Application number	US-201916697443-A
Country	US
Kind code	A1
Filing date	Nov 27, 2019
Priority date	Nov 28, 2018
Publication date	May 28, 2020
Grant date	—

Abstract

Sheet comprising a flexible support and a coating at least partially covering at least one face of the support, the support being made of a support material exhibiting dielectric properties, the coating being made of a coating material different from the support material and exhibiting magneto-dielectric properties or dielectric properties.

First claim

1 . Sheet comprising a flexible support and a coating at least partially covering at least one face of the support, the support being made of a support material exhibiting dielectric properties, the coating being made of a coating material different from the support material and exhibiting magneto-dielectric properties or dielectric properties.

2 . Sheet according to claim 1 , the support material being a thermoplastic or thermosetting polymer.

3 . Sheet according to claim 1 , the coating material exhibiting magneto-dielectric properties.

4 . Sheet according to claim 1 , wherein the coating entirely covers at least one face of the support.

5 . Sheet according to claim 1 , wherein the coating partially covers one face of the support.

6 . Sheet according to claim 5 , the elementary patterns defining a regular arrangement according to at least one direction.

7 . Sheet according to claim 5 , the coating covering less than 90% of the area of a face of the support.

8 . Sheet according to claim 1 , comprising, a metallic layer at least partially covering one face of the support.

9 . Method for manufacturing a sheet according to claim 1 , comprising the deposition of an ink comprising the coating material on at least one face of the support, to form the coating.

10 . Method according to claim 9 , wherein the ink is deposited by means of a technique chosen from among screen printing, spin coating, blade coating, ultrasonic spray coating, slot-die coating, inkjet printing, flexography and photogravure.

11 . Composite structure comprising a sheet according claim 1 , the sheet being wound on itself around a winding axis or folded on itself.

12 . Composite structure according to claim 11 , the sheet being wound along a winding path defining a spiral at right angles to the winding axis.

13 . Composite structure according to claim 12 , having a generally tubular form extending along the winding axis.

14 . Device for emitting or picking up an electromagnetic wave, the device comprising an electromagnetic antenna comprising a composite structure according to claim 13 .

15 . Method for forming a sheet according to claim 1 , comprising winding of the sheet on itself around a winding axis, or the folding of the sheet on itself, or the cutting of the sheet into small plates and the stacking of the small plates one on top of the other according to a stacking direction.

16 . Sheet according to claim 2 , where the thermoplastic or thermosetting polymer is selected from a group consisting of a polyimide, polyvinyl siloxane, polyethylene, polypropylene, polystyrene, acrylonitrile butadiene styrene and mixtures thereof, or a glass fiber-based composite.

Assignees

• Commissariat Energie Atomique

Inventors

• Pintos Jean-François
• Benwadih Mohammed

Classifications

• H05K3/1233

  Methods or means for supplying the conductive material and for forcing it through the screen or stencil · CPC title

• H05K3/1225

  Screens or stencils; Holders therefor · CPC title

• H05K2201/10098

  Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas · CPC title

• H05K2201/0154

  Polyimide · CPC title

• B29C53/04

  of plates or sheets {(B29C63/04 takes precedence; bending or folding paper B31F1/0003; folding films B65H45/00)} · CPC title