Filling, capping, labeling, and sealing machines work as a system. A choice at the filler affects the capper, and a wet or cold bottle affects the labeler. These guides explain how each machine type works and how it connects to its neighbors.
They are written for people preparing to talk to equipment suppliers. Each ends with questions to ask and with the items that need a sample trial or a drawing before you commit.
A packaging machine is rarely bought alone. The filler sets the container handling for the capper, a wet or cold bottle changes what the labeler can do, and a cup sealer inherits the product state the filler delivers. Treating each machine as an isolated purchase tends to push problems into the gaps between suppliers. The guides in this section explain how each machine type works, then repeat one question: what does this machine need from its neighbors, and what does it hand to them?
At each interface in the diagram, there are three things to confirm. Speed means the assumptions behind each machine’s rated output, since a line delivers what its slowest station and its stoppages allow. Container handling means how bottles, cups or pouches are presented, supported and transferred. Control signals means how machines tell each other to run, slow, stop and reject. None of the guides gives speed or accuracy figures of its own, and each one ends with items that need a drawing, a document or a sample trial before you commit.
“Packaging machine” covers very different equipment. Sorting by the job the machine does, rather than by product or brand, shows which guide answers which question and where this section stops.
Scroll horizontally for any hidden columns →
| Function | Machine types | What it does | Where to read |
|---|---|---|---|
| Filling | Time or level fillers, piston fillers, flowmeter fillers, in inline or rotary layouts | Meters a set amount of liquid or paste into a container | Liquid filling machine selection, filling methods |
| Closing | Capping machines with heads matched to the closure | Applies and tightens the cap on a bottle finish | Bottle capping machine selection |
| Tray sealing | Manual, rotary table and inline automatic tray sealers | Heat seals lidding film to rigid trays with optional MAP or vacuum skin pack | Food tray sealing machines |
| Cup filling and sealing | Fill-seal and form-fill-seal cup machines | Denests pre-formed cups or forms them from roll stock, fills them and heat seals a lid | Yogurt cup filling and sealing |
| Labeling and coding | Labelers and coders | Applies labels and date or lot codes | Cold and wet bottle labeling |
| Forming, filling and sealing from film | Vertical or horizontal form-fill-seal machines | Builds the package from reel film, fills it and seals it in one machine | Bottle vs. pouch packaging |
| Secondary and transport packaging | Case packers, multipackers, palletizers | Groups finished packs into cases and stacks them for shipping | Bottled water packaging line |
The last two rows have no dedicated guide here. For form-fill-seal machines, Viking Masek’s “How do Vertical Form Fill Seal Machines Work?” describes the principle: film is pulled from a roll, folded around a forming tube, sealed lengthwise, filled through the tube and then closed with horizontal jaws that make the top seal of one bag and the bottom seal of the next before a knife separates them. That is one machine doing what a bottle line spreads across container supply, filler and capper, which is why a change between bottles and pouches changes the whole line rather than one station.
Suppliers use these words loosely, so the guides in this section use a working definition based on what the operator does for each package, not on how much the machine costs.
Scroll horizontally for any hidden columns →
| Level | Who presents the container and starts each cycle | What the operator still does |
|---|---|---|
| Manual or tabletop | The operator, by hand, with a simple tool or device | Places, fills or closes each package, inspects by eye |
| Semi-automatic | The operator places the container and triggers the cycle; the machine meters, caps or seals | Loads and unloads every package and keeps pace with the machine |
| Automatic | Conveyors or indexing systems feed containers and the machine cycles without a per-package action | Supplies containers and materials, monitors, clears stops, runs changeovers and cleaning |
The definitions describe a station, not a line. A plant can run an automatic filler with a semi-automatic capper and hand labeling, and many small lines grow that way. When two quotes use the same word for different things, ask each supplier to describe the operator’s task per package and per shift, and compare those descriptions.
Small food producers asking which packaging machine to buy often start from a catalog of small machines. The more useful starting point is the bottleneck: which step in your current packing, by hand or by machine, limits the output you need, and what happens to that limit when you change products. The diagram turns that into a sequence of questions.
Questions to put to suppliers of small machines:
To turn the answers into a request that several suppliers can price on the same basis, use the RFQ checklist, and plan acceptance with the FAT checklist.
Scroll horizontally for any hidden columns →
| If your question is… | Start with | Then read |
|---|---|---|
| Which filler type fits my product and container? | Liquid filling machine selection | Liquid filling methods |
| What is the difference between metering principle and machine layout? | Liquid filling methods | Liquid filling machine selection |
| How do I match a cap, finish and capping head? | Bottle capping machine selection | FAT checklist |
| Why do labels fail on cold, wet bottles? | Cold and wet bottle labeling | Bottle capping machine selection |
| What stations are on a yogurt cup line? | Yogurt cup filling and sealing | Yogurt packaging |
The filler selection guide defines six inputs: product, container, fill volume and accuracy, output, process conditions, and cleaning and changeover. It advises writing them as ranges, marking which are fixed, building a shortlist of approaches, and running a sample trial with your own product and containers. It also asks you to settle the hygiene and cleaning requirement early.
Because three separate categories get mixed. The filling methods guide separates the metering principle (time or level, piston, flowmeter), the product feed method and the machine structure (inline or rotary), and suggests asking every supplier to state all three in the same order. It adds that hygienic class is a separate matter from all of them.
The closure as well as the bottle. According to the capping guide, cap, bottle finish and capping head form one matched system. The guide explains that application torque and removal torque are different things, and that changeover and change parts are part of the purchase and should be timed at the factory acceptance test.
The cold and wet labeling checklist groups checks into container surface, label stock, adhesive and machine, and states that the trial that matters is one on production-condition bottles, not room-temperature dry samples. It recommends measuring bottle temperature, room temperature and humidity at the labeling station.
When the machine types are clear, the practical work is documentation. The buying guides cover how to write a request for quotation, budget the whole project and plan acceptance testing.
For an announced aseptic-carton platform, the SIG Neo review separates catalog output from the food, pack-format and process checks needed for a line assessment.
A buyer's framework for choosing a liquid filling machine: project inputs, filling approaches compared, what to validate with samples, and supplier questions.
Read the guideCompare liquid filling methods by metering principle, product feed and machine structure: gravity, overflow, piston and flowmeter systems and their limits.
Read the guideHow to match a capping machine to the closure and bottle finish: cap types, application vs removal torque, heads, change parts and pre-purchase validation.
Read the guideA technical checklist for labeling cold, condensing bottles: container surface, label stock, adhesive and labeler settings, plus a trial on production bottles.
Read the guideA buyer's checklist for yogurt cup filling and sealing machines: stations, cup and lid compatibility, seal checks, cleaning, and questions to put to suppliers.
Read the guideA technical guide to selecting food tray sealers: manual vs inline automation, vacuum MAP gas flush technology, tray and lidding compatibility, and seal integrity validation.
Read the guideRead SIG’s new carton-filler announcement through food category, pack format, catalog-speed baselines and the validation records still needed for a project.
Read the guide
