Patent ID: 7238632

Claim:
An electromagnetic wave shielding material consisting essentially of: a fibrous structure base material and a conductive metal layer, wherein the fibrous structure base material is a three dimensionally knitted base material having a heat-fusing thread in at least a portion of the three dimensionally knitted base material, said heat-fusing thread is fuse-bonded at at least one contacting point, the three dimensionally knitted base material further comprising an upper ground structure ( 1 ), a lower ground structure ( 1 ) and connecting thread ( 2 ) interconnecting the upper ground structure ( 1 ) and the lower ground structure ( 1 ), the conductive metal layer is constituted by subjecting the three dimensionally knitted base material to an electroless plating with at least one conductive metal, and the connecting thread ( 2 ) of the three dimensionally knitted base material comprising portions ( 3 ) that extend in a sectional direction of the three dimensionally knitted base material, between the upper and lower ground structures ( 1 , 1 ), the portions ( 3 ) extending between the upper and lower ground structures ( 1 , 1 ) are entirely void of connecting thread ( 2 ) from both ground structures ( 1 , 1 ) and are situated between segments of the wave shielding material containing the connecting thread ( 2 ) extending between and interconnecting both the upper and lower ground structures ( 1 , 1 ), whereby minimizing debris upon cutting the electromagnetic wave shield material in the portions ( 3 ).