Electromagnetic wave absorbing and shielding film, method of manufacturing the same, and cable including the same
First Claim
1. A method of manufacturing an electromagnetic absorbing and shielding film, in which the method comprises forming a plate-like metal flake using a spherical metal alloy by an attrition mill, which operates at a predetermined speed for a predetermined time, with the addition of steel use stainless (SUS) balls or ceramic balls and surfactants, and washing the plate-like metal flake with ethyl alcohol, methyl alcohol or water and drying the washed metal flake, the method comprising:
- dispersing powder capable of absorbing electromagnetic wave selected from the group consisting of Fe—
Si alloy, Fe—
Si—
Cr alloy, amorphous substance, sendust (SDST) alloy, High-Flux powder, molypermalloy powder (MPP), pure iron alloy (Fe—
Si, or Fe—
Si—
Cr), amorphous alloy (Fe—
Si—
Al—
Cr), carbon coated iron, Ni—
Zn ferrite powder, Mn—
Zn ferrite powder, and a mixture thereof, into a binder solution, thus forming electromagnetic wave absorbing paint; and
coating the electromagnetic wave absorbing paint on the surface of a film capable of shielding electromagnetic wave and drying the resulting film, thus forming an electromagnetic wave absorbing and shielding film, of which one side is an electromagnetic wave absorbing layer having a thickness in a range of 10 to 100 μ
m and the other side is an electromagnetic wave shielding layer.
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Accused Products
Abstract
Disclosed herein are an electromagnetic wave absorbing and shielding film, a method of manufacturing the same, and a cable including the electromagnetic wave absorbing and shielding film. The electromagnetic wave absorbing and shielding film includes an electromagnetic wave absorbing layer, in which a plate-like metal flake is formed using a metal powder in the form of a paste or ink, and an electromagnetic wave shielding layer attached to the electromagnetic wave absorbing layer, thus absorbing and shielding electromagnetic wave and reducing noise.
For this, the present invention provides a method of manufacturing an electromagnetic absorbing and shielding film, in which the method includes forming a plate-like metal flake using a spherical metal alloy by an attrition mill, which operates at a predetermined speed for a predetermined time, with the addition of steel use stainless (SUS) balls or ceramic balls and surfactants, and washing the plate-like metal flake with ethyl alcohol, methyl alcohol or water and drying the washed metal flake, the method including: mixing the metal flake powder with resin in a ratio of 30 to 95 wt %:70 to 5 wt % using a mixer and stirring the same to form a metal paste; and coating the metal paste on an electromagnetic wave shielding layer, and a communication cable including the thus formed electromagnetic wave absorbing and shielding film.
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Citations
5 Claims
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1. A method of manufacturing an electromagnetic absorbing and shielding film, in which the method comprises forming a plate-like metal flake using a spherical metal alloy by an attrition mill, which operates at a predetermined speed for a predetermined time, with the addition of steel use stainless (SUS) balls or ceramic balls and surfactants, and washing the plate-like metal flake with ethyl alcohol, methyl alcohol or water and drying the washed metal flake, the method comprising:
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dispersing powder capable of absorbing electromagnetic wave selected from the group consisting of Fe—
Si alloy, Fe—
Si—
Cr alloy, amorphous substance, sendust (SDST) alloy, High-Flux powder, molypermalloy powder (MPP), pure iron alloy (Fe—
Si, or Fe—
Si—
Cr), amorphous alloy (Fe—
Si—
Al—
Cr), carbon coated iron, Ni—
Zn ferrite powder, Mn—
Zn ferrite powder, and a mixture thereof, into a binder solution, thus forming electromagnetic wave absorbing paint; andcoating the electromagnetic wave absorbing paint on the surface of a film capable of shielding electromagnetic wave and drying the resulting film, thus forming an electromagnetic wave absorbing and shielding film, of which one side is an electromagnetic wave absorbing layer having a thickness in a range of 10 to 100 μ
m and the other side is an electromagnetic wave shielding layer. - View Dependent Claims (2, 3, 4, 5)
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Specification