3M™ Embossed Copper Foil EMI Shielding Tape 1245, 5/8 in x 18 yd, 3 in Paper Core, 15 Rolls/Case. 3M™ Embossed Copper Foil EMI Shielding Tape 1245 is an acrylic adhesive EMI shielding tape. This flame retardant tape is designed for applications that require outstanding electrical conductivity. It comes on a removable liner for easy die cutting and handling. The tape is rated for 600V dry applications.