Film force is the tension created in the film due to the films attempt
to return to its original state after having been stretched.
What
Is Film Force ? (film
tension)
Film force
is the tension created in the film due to the films attempt to
return to its original state after having been stretched.
A rubber
band is a good analogy.
Why Have
Film Force ?
A low film
force inhibits the film from returning back towards its original
state.
Increasing
this force will cause the film to stretch (post stretch).
How To Create
Film Force ?
Film Force
is produced by creating a drag or tension between the load and
the film carriage and can be produced both mechanically and electrically.
Electrically
reducing the film feed or speed of the film leaving the carriage
compared to what the load demands increases the film force causes
the film to stretch between the load and the carriage.
Mechanically
delaying the dancer arm which measures the speed demand of the
load will reduce the film feed leaving the carriage which increases
the force.
Content and descriptions used in coordination with Phoenix Wrappers