| The rate of
conditioning depends on the thickness of the film
that is available to the air, the temperature and
air velocity. A single layer of acetate film of
normal motion picture thickness (.006) freely exposed
to circulating air reaches equilibrium in approximately
one hour. The same film wound in a 35mm x 1000ft.
roll at 24 ounce tension takes approximately four
weeks. Two alternate
methods of conditioning film are suggested:
1. Wind the roll onto a loop
rack and leave it for the specified time in a
conditioned room
2. Put the roll through a conditioning
chamber having controlled air velocity, temperature,
and humidity. |
