Flame retardant, clear pressure-sensitive adhesive tape comprises clear polyether-based polyurethane backing film and clear, polyether-based polyurethane pressure sensitive adhesive coated on one side of the backing film. Flame retardant is incorporated into the polyurethane backing film and the polyurethane adhesive to render the tape substantially flame retardant without causing a loss of the substantial transparency of the tape. The tape meets the following flame retardancy requirements: maximum average burn extinguishing time of 15 seconds, maximum average burn length of 8 inches and maximum average drip extinguishing time of 5 seconds, measured in accordance with defined test methods.
A double-sided single-liner pressure-sensitive adhesive tape has a first pressure-sensitive adhesive, preferably an acrylic pressure-sensitive adhesive, on one side of a carrier web, and a silicone pressure-sensitive adhesive on the other side of the carrier web. The tape is single-liner in that a double-sided release liner is wound with the double-sided tape, such that only a single release liner is required. A layer of first release material, preferably a silicone release material, is disposed on a first side of a release liner web facing the acrylic or other first pressure-sensitive adhesive. Fluorosilicone release material is disposed on the opposite surface of the release liner web facing the silicone pressure-sensitive adhesive. Preferred embodiments exhibit fluorosilicone unwind along with good balance of tack, adhesion and shear.