How can I stop images from being unloaded?

I am making an Airline on ROBLOX and all the objects keep unloading decals / image labels. I made a script that re loads the decals every minute but i still find it really annoying. But with image labels, i found an unchangeable property called IsLoaded. Is there any was at all to stop images from unloading or set specific images not to unload?

Heres the reloading script:

i = 1
repeat
script.Parent.Transparency = 1
wait(.1)
script.Parent.Transparency = 0
wait(60)
until i == 2

Thanks,