发明名称 |
Electro-magnetic shielding structure and method for making the same. |
摘要 |
<p>An electro-magnetic shielding structure comprises three parallel layers. The outer (301) and inner (303) layers are of a polymeric base material in which is suspended an electrically conductive fill material, giving the surface layers relatively high electrical conductivity. The middle layer (302) is of a polymeric base material, in which is suspended fill material having high magnetic permeability, giving the middle layer relatively high magnetic permeability. The enclosure is constructed using a co-injection molding process. <IMAGE></p> |
申请公布号 |
EP0550373(A1) |
申请公布日期 |
1993.07.07 |
申请号 |
EP19920480186 |
申请日期 |
1992.11.30 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HIGHUM, EDWARD ALLAN;MUELLER, ALFRED WILHELM;NASH, THOMAS WILLIAM;THORVILSON, SCOTT MARVIN;STADLER, EWALD EMIL GOTTLOB |
分类号 |
B29C45/00;B29C45/16;B29C70/88;B32B5/00;B32B7/02;B32B27/18;H05K9/00 |
主分类号 |
B29C45/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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