a non - yellowing pressure - sensitive adhesive tape with a polyolefin film layer and a fibrous web layer . a propylene film layer has an an antioxidant package of : 0 . 004 to 0 . 04 weight percent of irganox ™ 1010 ; 0 . 03 to 0 . 2 weight percent of a solid phosphite antioxidant ; 0 . 05 to 0 . 4 weight percent of a thioester ; and 0 . 05 to 0 . 4 weight percent of an inorganic acid scavenger ; the tackified synthetic rubber pressure - sensitive adhesive layer comprises 100 parts of a polystyrene - polydiene block copolymer , and 20 to 300 parts of a compatible tackifying agent and an antioxidant package , based on 100 parts of the polystyrene - polydiene block copolymer , comprising : 0 . 1 to 0 . 6 parts irganox ™ 1010 ; 0 . 1 to 0 . 6 parts irganox ™ 565 ; 0 . 0 to 0 . 6 parts of a phosphite antioxidant .