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    • 8. 发明申请
    • EMI GASKET FOR SHIELDING ELECTROMAGNETIC WAVE
    • 用于屏蔽电磁波的EMI垫片
    • US20160021798A1
    • 2016-01-21
    • US14463320
    • 2014-08-19
    • ICH CO., LTD.
    • YOUNG HUN KIM
    • H05K9/00B32B37/24B32B37/12B32B37/14
    • H05K9/0015B32B37/1284B32B2037/243B32B2307/212B32B2457/00
    • The present invention provides a gasket formed by applying an adhesive on four sides of an elastic body of a closed cell polyurethane material, wrapping a copper film around the elastic body other than a bottom bonding surface, forming a coating layer by depositing or plating nickel on a surface exposing the copper film, forming a resin coating layer on the nickel coating layer, and applying a conductive adhesive on the bottom surface. The present invention may drastically decrease thickness of the gasket by using closed cell polyurethane instead of conventional open cell polyurethane and may completely prevent oxidation and corrosion of copper by depositing or plating nickel on the exposed portions of the copper film and coating resin thereon. Furthermore, since a fiber material is not used, conductive powders are not generated, and thus short circuits or malfunctions can be reduced.
    • 本发明提供一种垫片,其通过在闭孔聚氨酯材料的弹性体的四面上涂布粘合剂,将铜膜包覆在除了底部粘结面以外的弹性体周围的铜膜上,通过将镍沉积或镀镍形成涂层 暴露铜膜的表面,在镍涂层上形成树脂涂层,并在底面上涂布导电粘合剂。 本发明可以通过使用闭孔聚氨酯代替传统的开孔聚氨酯来大大降低垫片的厚度,并且可以通过在铜膜和涂层树脂的暴露部分上沉积或镀镍来完全防止铜的氧化和腐蚀。 此外,由于不使用纤维材料,不会产生导电粉末,因此可以减少短路或故障。