I've had good luck with Westley's Bleach White as a general purpose cleaner. I haven't used it on PPF for sap, but I have used it to remove sap on a car that was covered by it. Westley's has no effect on PPF so I'd assume that it can also be used to take sap off.
Tree Sap
in Paint Protection Film, Clear Bra Forum
Posted
I've had good luck with Westley's Bleach White as a general purpose cleaner. I haven't used it on PPF for sap, but I have used it to remove sap on a car that was covered by it. Westley's has no effect on PPF so I'd assume that it can also be used to take sap off.