RHO III - Direktsiegelmaschine

RHO III - Metal Can Sealer


  • modular machine for heat-sealing of peelable composite membranes onto
    - welded metal or deep-drawn metal cans without additional ring end 
    - cardboard and plastic cans (optional)
    - circular and non-circular formats
  • up to eight working stations on a turret
  • up to 300 cans per minute
  • enormous poential for cost savings compared to the use of conventional peel-off-ends while maintaining comparable barrier and convenience properties
  • eliminating the tinplate from the ring
  • tight seal even in the area of the welding seam


Infeed of can bodies

  • can body separation by driven stop star and acceleration by infeed screw
  • inductive pre-heating and transfer to the heat-sealing station

Membrane feed

  • effective material utilization using optimised coil layout
  • double-sided decoiler for stop-free coil change
  • servo-driven take-off rolls for smooth decoiling
  • automatic scrap web discharge
  • patented servo transfer system using vacuum handling


  • heat-sealing of cans under adjustable pressure
  • creation of hermetically tight seal
  • long times of operation and trouble-free production
  • aligning of upper and lower sealing tool using high-precision linear guidings and cam-driven advance
  • isolation of the tooling and the guidance with high quality polymeric material for high thermal load
  • long sealing times of more than 0.6s
  • equalization of discntinuities in the area of the welding seam using an elastic sealing stamp

Technical Data

RHO IIIVRZS1 100/4VRZS1 100/8
number of modules**1 (standart verson ) or 2 (plastic cap application)
stations per module48
performance max. [cpm]*150300
productswelded cans (tinplate),
drawn cans (aluminum, tinplate),
cardboard and plastic cans
can diameter**50...99mm
can height80...250 mm (305...913)
can material***Weißblech (lackiert / unlackiert)
sheet thickness***0,13...0,35 mm
membrane material**Aluminiummembran mit PE-Siegelschicht

* depending on product dimensions
** other formats on request
*** for welded can bodies

Fast format change

  • fully automatic height change without need for changing parts
  • short changeover time by using pre-set sealing heads
  • easy access for service jobs
  • low maintenance through the use of wear resistant materials

Product samples