ELECTROMAGNETIC SHIELDING WITH DISCONTINUOUS ADHESIVE

摘要

A shield blocks passage of electromagnetic energy through a seam of indefinite length between conductive elements and is adhesively attached to at least one of the elements. A preferably nonconductive adhesive is disposed on a conductive surface of a seal in a discontinuous pattern along the length of the seam, defining areas of 5-40% adhesive for physically attaching the conductive surface, separated by 60-95% exposed areas for direct electrical contact. The seal can include a compressible body or can be defined by a conductive sheet, for example a fabric provided with a plating or other conductive coating. The areas of adhesive preferably define longitudinally non-overlapping inclined lines extending laterally across the seam. A release liner can removably attach to the adhesive. In a preferred embodiment the conductive surface is the surface of a compressible seal body, such as a conductive sheath on a compressible core. A conductive path extends without interruption along the length of the seam and across the lateral width of the seam at the adhesive lines, providing improved physical attachment and conductivity characteristics for the shielded seam as a whole.