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Heat  Sealing  Equipment  for  Mil-Spec &  Industrial  Bag  Packaging  Applications

Doboy HA-720 Hot Air Sealer

The Doboy HA-720 was Doboy's most rugged industrial hot air bag sealer.  It has been replaced by the HA-500 and HA-800 Hot Air sealers.

Hot Air Sealers are especially effective in corrosive or gritty packaging environments.

Typical applications include Salt, Calcium Chloride, Stone, Mulch, Firewood, Soils, Asphalt, Fertilizer, & Chemicals.

Doboy HA-720 Hot Air Bag Sealer
Doboy HA-720 Hot Air Bag Sealer

Machine Features

  • Welds Plastic Together with Hot Air (No Sealing Bands)
  • Ideal for Gritty and Harsh Products & Packaging Environments
  • Full-Length Flat Top Carrier Chain for Bag Top Control
  • Digital Temperature Controller
  • Stainless Steel Heat Manifold
  • Variable Speed Drive
  • Knurled Compression Rollers
  • Air Cooling Insures Seal Integrity
  • Rugged Two-Post Adjustable-Height Floor Stand
  • Auto-Shutdown to Maximize Heat Element Life
  • Self Contained Air Source (NO need for compressed air)
  • Made in the USA

Options / Accessories

  • Casters for Portability (adds 5" to machine height)
  • Markem Touch-Dry™ Ink Coder
  • Left to Right Feed Direction
  • Bag Top Trimmer
  • Extended Height Floor Stand
  • Corrosion Resistant (Stainless Steel) Package

Machine Machine Specifications

Bag Type
Poly Pillow or Tube Style Only
Bag Thickness
3-8 mil
Machine Speed
350 - 750 IPM
Seal Height (Adjustable with Hand Crank)
22" to 57"
Seal Width
Feed Direction (Standard)
Right to Left
Overall Length
Overall Width
Overall Height
Machine Weight
620 lbs (281 kg)
NOT Required
230 V / 60 Hz / 1 Phase