Machine models: SP1, SP1DL, & SP1RB

The Butler SP1 Tension Adder Module is used to extend the output tension range of the SP1 Splicer. The Tension Adder Module is equipped with a pneumatically operated brake to provide 6-35 pounds (30-150N) of total film tension at the exit of the Splicer.

Functions and Features


  • Increases the SP1 maximum output tension


  • Provides 6-35 lbs. (30-150N) of total film tension to the exiting film


  • Brake tension regulator to adjust film tension
  • Nip regulator to control nipping force on brake roller
  • Pneumatics switch to engage/disengage module



  • Set brake and nip regulator pressure to achieve desired total film tension
  • Activate by manual pneumatic switch at device
  • Optional film tension monitoring system recommended for actual film tension reading
  • Cleanliness  of rollers within Tension Adder Module must be maintained for consistent and proper operation


  • Mounts to frame at output of splicer
  • Available  as factory option or can be field installed by Butler Field Service