Vacuum sealing machine

The welding and closing machine model STV 2200 has been specially developed for sealing large containers. The machine can seal octabins with inliner, big bags or cartons with inliner and suck off the residual air. Due to the wide bag dimensions the machine has a clamping and spreading device to make the application easy and safe for the operator.

Machine components:

The welding and closing machine consists of the following main components:

  • Base frame with hydraulic lift truck
  • Bag clamping system with mounted rollers
  • Bag spreading system with force control
  • Welding head with rear welding cheek and underlying sealing strip
  • Lifting unit for front sealing and sealing strip
  • Front welding cheek and sealing strip underneath
  • Suction lance with pneumatic lifting system
  • Control with central operation


Machine features:

  • Front operation, easy bag/inliner attachment
  • Optimized bag holding and spreading system
  • Pneumatically operated opening and welding system
  • 100% fully viewable work area
  • High operational reliability
  • Very fast operation
  • Ergonomic working environment


Operation of the stand welding machine:

After the container has been placed centrally under the machine, the operator must clamp the container inliner to be welded in the quick-release clamps. The expanding bolts and the suction lance head must be located in the inner area of the Inliner. The operator can now start the sealing cycle at the external operating point outside the protected area. The spreading device is moved apart by motor until the bag has reached a sufficient spreading force. An overrun mechanism detects a tearing of the inliner. When the motorized spreading has been completed, the suction lance moves into the container to the set dimension. The front sealing and welding cheeks are lowered and the sealing jaws close. The vacuum generator starts and the residual air extraction is started over the set suction time. After the suction time has expired, the suction lance moves out of the bag and the sealing jaws close. The sack is sealed with the set sealing time. The sealing jaws and sealing jaws open with a delay after this procedure and the front cheeks move to the upper position. The entire welding head lifts to the set extension position. The container can be extended. As soon as a new pack is inserted, the welding head lowers and signals that a new inliner can be positioned.

The machine has a touch panel where the individual operating steps can be seen. Parameters and operating modes can be set. Error and monitoring messages and safety instructions are displayed in plain text. In manual mode, each individual step can be approached (step chain function). The welding current is monitored and displayed via the control.

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