3M™ Circuit Plating Tape 1280
3M™ 1280 has a red color, 3.6 mil (0.091mm) total thickness and is a polyester film tape with silicone and rubber blend adhesive. This tape is used for printed circuit board masking during electroplating.
It is a low stretch polyester film for machine as well as hand application. Elongation (break or yield) is 125%. Backing thickness is 0.9mil (0.02mm). The polyester backing reduces stretch and recovery of tape and associated uneven “stop-off” line. 3″/76.2mm core size.
A thick adhesive coating reduces undercutting because adhesive helps block out solutions between fingers.