Patco 565SB Screenblock Tape A low density polyethylene film with acrylic adhesive designed to be used as a protective mask exhibiting excellent chemical, moisture, and abrasion resistance on a split back release liner. Applications For use as a border and block-out tape for screenprinting applications. Border tape - It works by forming a well preventing ink from penetrating beyond the image area. Block-out tape - Can be adhered directly to the mesh allowing muli-colored printing and to cover pinholes. Features & Benefits ---Superior conformability. ---Stretches with screen during frame retension. ---Prevents leakage from inks & cleaners. ---500% elongation capacity. ---Good tack and moderate adhesion. ---------Provides clean removal from most surfaces. ---Easy to apply.