Film feed is the ability to provide the film required to wrap a load
while keeping the tension of the film constant.
What
Is Film Feed?
Film feed is the ability to provide the film required to wrap a load while keeping the tension of the film constant.
As the load rotates the carriage must vary the supply of film with the demand of the load.
A dancer roller reads the demand of the load and is the input for the control of the film feed.
Controlling this constantly varying demand is critical to proper operation.
How To Control Film Feed?
ANALOG SENSOR : The dancer arm rotates a cam which sends a varying signal to the drive board which then sends a varying voltage to the motor. The larger the dancer displacement the larger the output voltage. The larger the output voltage the faster the film is fed.
Content and descriptions used in coordination with Phoenix Wrappers
