Every vacuum packaging machine on the market is one of these three, and the gap between them is bigger than any brand comparison.
UMEO builds one. We build vertical vacuum bag lines, which form a bag from roll film, fill it, draw the air out and seal it in one cycle. The page covers all three, then spends the rest of its time on the route we know.
The Three Routes to an Airtight Pack
"Vacuum" names a result, not a machine, which is how a buyer ends up comparing two machines that share almost nothing.
Route 1: Chamber and Nozzle Sealers
A chamber sealer puts the open bag inside a closed box, evacuates the box so the bag collapses with it, then seals the mouth. A nozzle sealer (also called external or snorkel) pushes a tube into the bag and draws the air out through it. Both run on pre-made pouches placed by hand.
A chamber or nozzle vacuum packaging machine is a batch process: load, close, wait, open, unload. The operator sets the pace, not the machine. It holds up at a few hundred packs a day and becomes the constraint sooner than most buyers expect.
Route 2: Vertical Vacuum Bag Lines
This is the route we build. A vertical vacuum packaging machine differs from the first step. Film unwinds from a roll, a forming collar folds it into a tube, the back seam and bottom seal close, product drops in from above, the air is drawn out, and the top jaw seals and cuts. No pre-made pouches, nobody loading each one.
Because the machine makes the bag, pack geometry stays consistent in a way hand-loaded pouches rarely do. The route suits dry, free-flowing product: rice, beans, sugar, grains, nuts, coffee, chia, quinoa.
Most enquiries start with a chamber unit in mind, because that is what a web search returns. The real comparison is a continuous process against a batch one.
Route 3: Skin and Stretch Trays
A tray skin vacuum packaging machine forms a rigid tray, drops the product in, and lids it under vacuum or skin film. It is what sits behind most fresh meat and cheese displays. Different investment class, different conversation, and not a machine we build. It appears here because buyers confuse it with the other two.
Route Products Pack format Output pattern Chamber or nozzle sealer Deli portions, marinated items, mixed small batches Pre-made pouch, loaded by hand Batch, operator-paced Vertical vacuum bag line Rice, beans, grains, nuts, coffee, chia Pillow, gusseted or quad seal brick Continuous, machine-paced Skin or stretch tray Fresh meat, cheese, retail display Rigid tray with lidding film Continuous, higher investment
Two of those rows describe machines we do not build. The vertical line is the only vacuum packaging machine in our range, and the rest of this page is about it.
Where the Air Leaves the Pack
Four stations do the work in a vertical vacuum packaging machine, and the one buyers forget about is the one that sets your output.
Film Pull and Forming
Film feeds off a roll and over a forming collar that folds it into a tube, leaving an open bag under the filler after the back seam and bottom cross seal close.
Two things go wrong here, both ordered before the machine arrives. Film structure matters more than thickness, and one chosen by micron gauge alone tends to disappoint. Roll size matters too, because the unwind has an outer diameter limit a cheap bulk roll can quietly exceed.
Dosing and Filling
Product is weighed and dropped from above, normally from a multihead weigher where accuracy and giveaway both come from. Free-flowing grains dose cleanly; oily or sticky blends do not, and they behave differently again once vacuum is applied.
The Vacuum Step
A pump pulls the air out of the formed, filled bag to a set level. This is where cycle time disappears, because a 2 kg bag holds far more air than a small pillow bag.
That one fact explains an output gap that looks wrong on paper. Our small-bag frame runs at 1,200 to 1,500 packs an hour; the brick frame at 60 to 150. Same technology, same air supply, and one is roughly eight to twenty-five times slower, depending on where you land in each range.
Sealing and Discharge
A pillow bag closes one back seam plus two cross seals. A brick pack uses a quad seal, four edges rather than three, which is what lets a 2 kg pack stand square and stack flat instead of slumping. Those extra seals take time, which is the second reason the brick frame runs slower.
Bag Width Decides the Frame
For a vacuum packaging machine for food such as rice, bag geometry, not budget, decides it. Width is the fastest number to check.
Up to about 200 mm wide, for rice, beans, sugar and similar small grains in pillow or gusseted form, the high-output small-bag frame is the right buy. Volume per shift is the pressure most buyers feel.
From roughly 200 to 250 mm, for chia, quinoa, nuts or coffee at 2 kg, the brick frame with a quad seal is the right buy. Only the quad seal holds the pack square and flat.
Wider than 250 mm, or a pack well beyond the 2 kg brick range, sits outside both frames. Ask us about a larger one.
Some products should not go near a vertical vacuum line at all:
Powders belong on a frame with an auger filler, sealed against dust.
Liquids, pastes and cooking oil belong on a four-side-seal sachet line built for them.
Anything fragile enough to break on the drop belongs on an inclined or horizontal machine.
Saying that costs us the occasional order, and prevents the installations that would have failed. For the product families that do fit, our page shows the range in context.
Film: Structure Before Thickness
On a vacuum packaging machine that makes its own bag, film is closer to a machine setting than a consumable. Laminated structures with a barrier layer are the requirement, not the upgrade. Our small-bag frame runs OPP/CPP, OPP/CE, PET/PE and aluminium foil laminates. The brick frame runs OPP/CPP, PET/PE, BOPP/ALU/LDPE and NYLON/PE.
Single layer film vacuums down, looks right on the day, then lets oxygen back through in storage. Barrier is what makes the vacuum step worth paying for, and the cheapest place to lose the benefit.
Two more things belong on the film order: each frame has a hard outer diameter limit and a minimum core size, so a bulk roll can arrive unusable; and if your film carries registered print, say so early because it adds a constraint plain film does not have.
Air, Power, and Floor Load
Site requirements are where vacuum packaging machine projects slip, because nobody checks them while the machine is still on a boat.
Compressed air: both frames want 0.8 MPa. A compressor that cannot hold it gives you drifting vacuum depth and packs that leave the line looking sealed and arrive soft.
Power: 8.5 kW on the small-bag frame, 5.5 kW on the brick frame. Single or three phase has to be settled before the machine ships.
Weight: 765 kg and 1,050 kg. Fine on a ground slab, worth a call to your landlord on a mezzanine.
Changeover: with four SKUs, the minutes between them shape your real daily output more than the rated speed does.
For the full spec sheet, our puts the two frames side by side.
What a Quote Should Put in Writing
Nobody can price a vacuum packaging machine honestly off a page. The figure moves with bag format, film structure, dosing method and daily target. Ask any supplier, us included, to commit these in writing:
Rated output at your fill weight, not the fastest bag the frame can run
The film structure and roll dimensions the price assumes
Dosing method and the accuracy quoted with it
Installation, commissioning and operator training, and who pays travel
Warranty term in writing, plus spare parts lead times
A factory test running your film and your product, with video
A quote that arrives as one figure and a model number is a guess, and guesses get renegotiated after you have signed.
Faults That Trace Back to the Quote
Nearly every complaint in month three was decided before delivery: an undersized compressor, a film roll ordered before anyone checked the diameter limit, barrier specified by thickness, a production plan built around the small-bag number when half the output is bricks, single phase power assumed, a product blend changed after commissioning that behaves differently in both the filler and the vacuum stage.
All of these are cheap to fix on paper and expensive to fix on site.
FAQs
Chamber or Vertical Line: Which One Do I Need?
Pick a chamber sealer for mixed small batches, wet or marinated product, or anything that changes shape every hour. Pick a vertical line for dry, free-flowing product in one or two bag sizes with output paced by the machine. The boundary is throughput, not money.
How Is a Brick-Shaped Vacuum Pack Made?
A quad seal closes four edges instead of one back seam plus two cross seals on a pillow bag. Together with the vacuum step pulling film tight against the product, that gives a pack which stands square and stacks flat. It also costs cycle time.
Can Liquids or Sauces Run on This Line?
No. Free liquid near a vacuum stage causes trouble for the pump and for seal quality. Liquids, pastes and cooking oil belong on a four-side-seal sachet line designed for them, and we will say so at quote stage rather than after.
How Much Longer Does Vacuum Keep Food Fresh?
There is no general multiple, and anyone who quotes one is guessing. Shelf life depends on the product, the film's barrier structure and your storage temperature together. Vacuum slows oxidation and freezer burn. It does not stop either, and it is not a substitute for a cold chain.
Does UMEO Build Chamber Vacuum Sealers?
No. We build vertical vacuum bag lines that form the bag from roll film, fill it, evacuate it and seal it. Chamber and nozzle sealers run on pre-made pouches loaded by hand, a batch process we do not manufacture. If that is what your product needs, buy it from a maker who specialises in it.
What Film Works on a Vacuum Bag Line?
Laminated film with a barrier layer. The small-bag frame runs OPP/CPP, OPP/CE, PET/PE and aluminium foil laminates. The brick frame runs OPP/CPP, PET/PE, BOPP/ALU/LDPE and NYLON/PE. Single layer film vacuums down neatly, then lets oxygen back through in storage.
What Does a Vacuum Packaging Line Cost?
No useful list price exists, because bag format, film structure, dosing method and daily target move the number more than the frame does. Ask for a written quote built on your bag and your fill weight, then compare suppliers against the same specification rather than a headline figure.
Start From a Sample, Not a Catalogue
There is no best vacuum packaging machine in the abstract, only the one that matches your bag, product and shift. Work out which of the three routes you are on before you compare brands, because the wrong route costs more than the wrong supplier inside the right one.
Send us 5 kg of your product, the bag size and the daily count. We will run it on the frame we think fits, record the cycle at your fill weight and send the numbers back. If a vertical line is wrong for you, we will say so.