It will be really fast to remove it if you heat it with electric hair drier at the same time.
Actually, qualified protective film products won't have the problems above. The protective film is required to be easy to stick and remove. Generally, it won't be difficult to remove within half a year or so.
It can not be heated. The consequence of heating it is the glue on the film will remain on the panel. And it will get difficult to clean it up.
Blowing it! Dismantling the panel to remove the film and installing it again is really troublesome! You can heat the film with high-power electric hair drier or fire. And then put somewhere cold to cool it down for a night. Then it will be easy to remove.
