Sheet type magnetic substance and method of manufacturing the same

A manufacturing method and sheet-like technology, applied in the fields of magnetic field/electric field shielding, electrical components, printed circuits, etc., can solve the problems of thinning and disappearing characters, and achieve the effect of reducing uneven coating and improving the effect of electromagnetic interference.

Inactive Publication Date: 2008-11-12
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the characters printed on this sheet magnet become thinner or disappear due to friction or the like.

Method used

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  • Sheet type magnetic substance and method of manufacturing the same
  • Sheet type magnetic substance and method of manufacturing the same
  • Sheet type magnetic substance and method of manufacturing the same

Examples

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Embodiment Construction

[0047] Hereinafter, preferred embodiments of a chip magnet and a method of manufacturing the chip magnet according to the present invention will be described with reference to the accompanying drawings. As an example, a strip-shaped chip magnet that can be applied to a mobile phone to suppress the electromagnetic wave from interfering with other internal circuits except the antenna part that receives electromagnetic waves from an external reader and writer, and The elongated strip-shaped sheet magnet produced in this elongated sheet magnet will be described as an example.

[0048] First, the structure of the elongated sheet magnet 1 will be described with reference to the drawings.

[0049] figure 1 , 2 The shown sheet magnet 1 is a sheet magnet that shields electromagnetic waves, such as figure 2As shown, the structure includes a translucent resin body 2 , a printed portion 3 , a clear coating layer (coating layer in the present invention) 4 , a magnetic layer 5 , an adhe...

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PUM

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Abstract

To provide a sheet-like magnetic material whose printed part such as characters is protected from being rubbed, and which is inexpensive and thin.The sheet-like magnetic material is provided with: a sheet-like translucent resin body 2 wherein a printed part 3 including at least one kind of characters, symbols and figures printed in ink is formed on its one surface; and a magnetic layer 5 that includes at least a soft magnetic metallic magnetic powder and a binder. The material is also formed on one surface of the translucent resin body 2. In addition, a clear painting layer 4 covering the printed part 3 is formed on one surface of the translucent resin body 2.

Description

technical field [0001] The present invention relates to a sheet magnet for shielding electromagnetic waves and a manufacturing method thereof. Background technique [0002] As such a chip magnet, there is known a chip magnet (electromagnetic interference suppressor) disclosed in JP-A-11-68379. This kind of sheet magnet is an electromagnetic interference suppression body composed of at least soft magnetic powder and an organic binder. Conductors are arranged on the surface of the electromagnetic interference suppression body in the form of a sheet. The surface of the conductors is printed and formed with characters, At least one of symbols, numbers and graphics. Therefore, by combining the electromagnetic interference suppressor and the conductor with the sheet magnet, it is possible to control the transmission level and coupling level of electromagnetic waves. In addition, by printing characters, etc., it can become a magnet with a display function. [0003] Patent Docume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B7/02B32B7/12
CPCC08J5/18H05K9/0092H05K2201/083
Inventor 池辺优小野康德武石实岩田昭雄山田博幸佐藤由智
Owner TDK CORPARATION
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