Heat Seal HDX 350

Heavy Duty Combo Shrink System

Access System Layout Here

The HDX 350 is a robust and efficient combo shrink system designed to meet the demands of high-volume packaging operations. This advanced machine combines precise sealing and efficient shrinking capabilities, making it ideal for a wide range of packaging applications.

Key Features:

• Control Panel:
  • Conveniently positioned digital controller for easy operation.
  • Meets UL 508A standards.
  • Simple operation with precise temperature controls.
    
  • Standard cycle counter with reset function.
    
  • Single cord 220V single-phase power supply.
• Sealing Area:
  • Hot knife exact seal system with multiple profile options.
  • Large 21” W by 25” L seal area.
  • Heavy-duty cast aluminum seal head with stainless film clamps.
  • Balanced magnetic hold-down for strong, consistent seals.
  • Seal conveyor ensures smooth product transfer from the seal area to the tunnel.
• Shrink Tunnel:
  • Non-stick mesh tunnel belt with adjustable riser bar for improved bottom shrink.
  • 12" H tunnel opening.
  • Efficient MaxAir tunnel triples airflow and evenly wraps air around the package.
  • Automatic cool-down feature extends the life of the heating element.
• Additional Features:
  • Package centering system for even shrink; sealing and tunnel conveyor move in tandem vertically.
  • Tunnel horizontal quick slide adjustment.
  • Two-year warranty.
  • Four individually adjustable perforating wheels.
  • Auto-tensioning film cradle.
  • Heavy-duty casters and levelers.

Specifications:

• Film Capacity: 25” Wide (64 cm)
• L Bar Sealing Area: 21” W, 25” L (53 W, 64 L cm)
• Inside Tunnel Dimensions: 27” L, 20” W, 12” H (69 L, 51 W, 30.5 H cm)
  
• Tunnel Conveyor Speed: 0-20 feet per minute (0-6 meters per minute)
  
• Overall Dimensions: 95” L, 35” W, 63” H (241 L, 89 W, 150 H cm)
• Working Height: 38” (97 cm)
• Power Requirements: 220 Volts, 48 Amp, Single Phase
• Tunnel Wattage: 6,200
• Weight: 1080 lbs. (490 kg)

Available Options:

• Fully stainless-steel construction.
• Reverse flow.
• Powered conveyor lift.
• Air actuated sealing head.
• Added heated hole punch.
• Tunnel belt options: stainless steel wire mesh or PTFE non-stick mesh belt.
• Spare parts kit (5820-020).
• Powered film unwind with perforating roller and 10-inch high adjustable inverting head.
• GTC180/22 - 180-degree gravity turn around conveyor.
• GTC90/22 - 90-degree gravity turn around conveyor.
• AT36 - 36" rotary accumulator table.
• AT48 - 48" rotary accumulator table.

HDX 350 at a glance

• Combo system that seals and shrinks in one pass, built for high-volume packaging runs.
• RS-5 Plus digital controller that meets UL 508A, with precise temperature control and a reset-able cycle counter.
• 21" W by 25" L hot-knife seal area with a cast aluminum seal head and stainless film clamps.
• MaxAir shrink tunnel with a 12" high opening and an adjustable riser bar for even bottom shrink.
• Auto-tensioning film cradle and product loading tray to center film across package sizes.
• Runs on 220V single-phase power and ships as freight at 1,080 lbs.

How to choose an HDX combo shrink system

Heat Seal builds three HDX combo systems that Mid-State Litho carries, and the right one comes down to run volume and how much automation you want at the infeed.

• HDX250: the compact combo system, a fit for shops moving into in-house shrink packaging or running shorter jobs.
• HDX 350 (this page): the mid step, with a larger 21" by 25" seal area and the MaxAir tunnel for steady higher-volume work.
• HDX250A: the automatic combo system for the highest throughput, where hand-loading each package becomes the bottleneck.

If you are not sure which size matches your run lengths, our team can walk through the three over a quick call.

About Heat Seal packaging systems

Heat Seal is a long-running US manufacturer of shrink-packaging equipment, and Mid-State Litho carries the line as an authorized dealer. The catalog spans HSE L-bar sealers, T-series shrink tunnels, and the HDX combo systems that pair a sealer and a tunnel in one frame. That range lets you match a standalone sealer, a standalone tunnel, or a full combo to the way your packaging line is laid out.

Why buy from Mid-State Litho

Mid-State Litho is an authorized Heat Seal dealer, so every HDX 350 ships new with full manufacturer warranty. We arrange freight delivery and setup support, and we supply the shrink film and consumables from the same place, so you are not chasing parts across vendors. When a line needs separate stations, pair the HDX 350 with a standalone HSE 100 sealer or a T3417 heat tunnel, and see the full range on our shrink wrapping equipment hub.

Frequently asked questions

What is the Heat Seal HDX 350?

It is a heavy-duty combo shrink system that seals and shrinks in one machine, built for high-volume packaging.

What controller does the HDX 350 use?

An RS-5 Plus digital controller that meets UL 508A, with precise temperature control.

What package sizes can it run?

A film cradle and product loading tray center the film so the machine handles a range of package sizes.

How does the HDX 350 compare to the HDX250 and HDX250A?

The HDX250 is the smaller combo system and the HDX250A is the larger automatic system; the HDX 350 sits between them in throughput.

Does Mid-State Litho deliver and install shrink systems?

Yes. We ship these as freight and support setup; request a quote for freight cost and lead time.