Hermetic bag heat sealer DS-21-HE

The DS-21-HE automatically decuffs, stretches and heat seals the bag. With its typical features such as hermetic heat sealing, vacuumizing, gas flushing, cleanability and crate handling, the bag sealing machine meets the needs of the high demanding industries.

The DS-21-HE standard runs one case footprint with variable heights. Upgradeable to multi case footprint.

Combine the hermetic bag heat sealing machine with a Pattyn case erector, bag inserter, filler and case closer to profit from a fully automated bulk packaging line.

  • Benefits
  • Technical specifications
  • Containers
  • Consumables
  • Options


Protect your product

  • Shelf life extension and 100% product protection thanks to the hermetic heat sealing, vacuum packing and gas flushing.
  • Two double sided impulse heat seals.
  • Minimal moving parts above the filled case.

Easy to use, easy to clean

  • Elimination of operator mistakes thanks to the fully automatic format change.
  • Random case height modus.
  • Tool-free changeover of vacuum probe for cleaning.
  • Special cleaning mode to hose down conveyors.

Technical specifications

A perfect hermetic seal

  • Vacuum decuffer hooks for full and optimised decuffing.
  • Stepper motor driven stretcher plates with integrated decuffer control and electronic tension regulation for constant film stretching, independent from film diameter variations.
  • Two double sided impulse heat seals with upper and lower clamping device to keep film stress-free during sealing.

Vacuumize and gas flush installation
Tool-free exchangeable vacuum probe to:

  • Excess air removal.
  • Vacuumize until a set under pressure is reached.
  • Vacuumize and gas flush for shelf life extension.

100% product protection thanks to hermetic heat sealing, vacuum packing and gas flushing


  • Without vacuum and/or gas flush installation: up to 10 c/min and up to 8 c/min for semi liquids.



Container specifications (outside dimensions in mm)

Standard mono footprint with variable case heights

  • Min. L.280 x W.240 x H.190
  • Max. L.600 x W.400 // D.650

For other dimensions, please contact us.

Film specifications

  • PE based film
  • Film thickness: as from 15 µm to 70 µm


  • Vacuum installation.
  • Vacuum & gas flush installation.
  • Multi-footprint / variable case heights.
  • Hose down execution.
  • Gusset sealing for crates and trays or when S > 900 mm.
  • Perforation module for perforation below the seal for easy opening.
  • Access point for remote support.

For other options, please contact Pattyn.