Back to results
US 11,602,091 B2Granted
Electromagnetic wave shielding film
AssigneeLG Chem, Ltd.
InventorsJong Min Shin, Dong Woo Yoo, Jin Kyu Lee
Life of this patent
Estimating the term…
Abstract
The present application relates to an electromagnetic wave shielding film, which can provide an electromagnetic wave shielding film having excellent mechanical strength, flexibility, electrical insulation properties, bonding properties with other constituents, oxidation and high-temperature stability and the like, while having excellent electromagnetic shielding ability.
Claims15
An electromagnetic wave shielding film, comprising:
- a metal foam in the form of a film;
- and
- a polymer component on a surface of the metal foam and inside the metal foam,
- wherein 80% or more of total pores in the metal foam have a pore size of 100 μm or less, and
- wherein the electromagnetic wave shielding efficiency at 100 kHz to 3 GHz is 85 dB or greater, and an electromagnetic wave shielding efficiency at 1.5 to 18 GHz is 70 dB or greater, as measured in accordance with ASTM D4935 or ASTM ES7 standard.
2 more elements
A method of producing an electromagnetic wave shielding film, the method comprising:
- forming a metal foam from a slurry that comprises a metal powder and polymer beads, wherein the metal foam is in the form of a film;
- applying a curable polymer composition on a surface of and/or inside the metal foam;
- and
- curing the curable polymer composition on the surface of and/or inside the metal foam to form a polymer component on the surface of and/or inside the metal foam, thus forming the electromagnetic wave shielding film.
1 more element
A method of producing an electromagnetic wave shielding film, the method comprising:
- providing a metal foam in a form of a film;
- immersing the metal foam into the curable polymer composition so that the curable polymer composition is on a surface of and/or inside the metal foam;
- and
- removing a portion of the curable polymer composition using a film applicator;
- and
- curing the curable polymer composition on the surface of and/or inside the metal foam to form a polymer component on the surface of and/or inside the metal foam, thus forming the electromagnetic wave shielding film.
3 more elements
Dependencies are inferred from the claim text.