Food and beverage vision inspection for filling and packing lines in South Africa
Camera checks on bottling lines and packing lines: filling, capping, labelling, coding and case packing.
Technical review: Frank GuoReviewed
Food and beverage vision inspection places camera checks along the bottling or packing line: after the filler for fill level, after the capper for caps and tamper bands, after the labeller for label position and SKU, after the coder for date and batch codes, and at the case packer for counts. Washdown, condensation, foam and frequent changeovers decide how the station is built. Vision does not replace food safety testing, leak testing or checkweighing.
Inspection points on a bottling line and packing line
A typical sequence for bottles and jars; your line may add or skip steps. Each check sits after the step that can cause the fault.
Swipe sideways to see the whole drawing →
What goes wrong at each step
Visible faults by step, and the application that checks for them.
| Production step | Typical visible faults | Inspection |
|---|---|---|
| Filling | Under-fill or over-fill; foam at the neck | Fill level, cap & seal |
| Capping | Missing, high or tilted caps; missing or broken tamper bands | Fill level, cap & seal |
| Labelling | Missing, crooked or flagging labels; the wrong label after a changeover | Label & print inspection |
| Date coding | Missing, faint or smudged codes; the wrong date or batch | OCR/OCV & date codes |
| Case packing | Empty positions in a case, tray or multipack | Presence, absence & counting |
Checks that apply on food and beverage lines
Together they cover most beverage inspection and food packaging inspection on the line. Several can share one station when the features are visible from one position. A food inspection machine that examines the product itself, such as X-ray or metal detection, is a different category.
Fill level, cap & seal
Fill level through PET or glass, cap presence and tilt, tamper bands. Not a leak test.
Label & print inspection
Label presence, position and SKU, including after flavour or pack-size changes.
OCR/OCV & date codes
Best-before dates and batch codes checked against the running product.
Presence & counting
Every position in a case, tray or multipack filled before it is closed.
Food and beverage inspection scenarios by product
Common products on South African food and beverage lines, what a camera checks on each, and the application page with the detail. The method in each row is a starting point, confirmed on your own samples. Weight, seal tightness and foreign bodies inside a closed pack need a checkweigher, leak tester, metal detector or X-ray.
| Product / line position | What is inspected | Typical fault caught | Inspection method | Related application |
|---|---|---|---|---|
| PET water bottlesafter the filler and capper | Fill level through the clear wall; cap height and tilt | Low or high fill; missing, high or cocked cap | Backlight behind the bottle; side camera at the neck | Fill level, cap & seal |
| Returnable glass beer bottlesempty, after the bottle washer | Base, sidewall and finish of the empty bottle | Chipped finish, residue or a foreign object in the base, the wrong bottle shape | Base camera lit from below; finish camera looking down with a ring light | Empty containers & preforms |
| Canned soft drinksafter the seamer and coder | Date and batch code on the can end or base | Missing, smudged or wrong code. The fill inside a can is not visible to a camera | Camera over the can end with dome light to calm the shiny metal; OCR/OCV | OCR/OCV & code inspection |
| Fresh milk bottlesafter the capper | Cap colour against the product being filled | The wrong-colour cap after a changeover between milk types | Colour camera above the cap with diffuse light | Fill level, cap & seal |
| Fruit juice cartonsafter the carton filler | Screw cap on the carton top | Missing or crooked cap | Camera looking down on the carton top, diffuse light | Presence & counting |
| Yoghurt pots with foil lidsafter the cup filler and sealer | Foil lid present and centred; the sealing flange; lid print | Missing or off-centre lid, product on the flange. Not a leak test | Dome light over the cups to calm foil glare | Fill level, cap & seal |
| Crisps (chips) and snack pouchesat the form-fill-seal bagger exit | Top seal area and the printed best-before code | Product trapped in the seal, creased seal, missing code | Camera at the jaw exit with light across the seal; OCR for the code | Fill level, cap & seal |
| Sliced bread bagsafter the bag closer | Closure clip or tag present and its printed day code | Missing clip, the wrong day on the clip | Camera at the closer with diffuse light; OCV on the clip | OCR/OCV & code inspection |
| Rolls and buns in bakery traysbefore trays are stacked | Every tray position filled | Empty or doubled positions, product on the tray rim | Overhead camera with even diffuse light | Presence & counting |
| Sauce and condiment sachetsafter the multi-lane sachet machine | Seal ends and print on every lane | Product in the seal, open end, misregistered print | One view across all lanes, with backlight or low-angle light | Label & print inspection |
| Wine bottlesafter the labeller | Front and back labels, neck capsule | Crooked or flagging label, the wrong back label for the vintage, missing capsule | Several cameras around the bottle, diffuse light | Label & print inspection |
| Ready-meal trays with printed sleevesafter sleeving | Sleeve matches the meal in the tray | The wrong sleeve on a tray after a changeover | Barcode read on the sleeve plus an artwork check | OCR/OCV & code inspection |
| Shrink-wrapped multipacksbefore the shrink tunnel | Bottle or can count in each pack | A missing unit in the pack | Overhead camera before the film goes on; opaque film hides units | Presence & counting |
| Shipping cases and palletsat the case sealer and stretch wrapper | Case and pallet labels present, readable and matching the product | Missing, unreadable or wrong label | Fixed code reader or camera beside the conveyor | Carton & pallet verification |
For date marking, start with best before vs use by in South Africa to separate the approved wording and shelf-life rule from the printed-code check.
For film-fed packs, use sachet date-code and seal checks to plan inspection around forming, sealing and film changes, with a clear boundary between visible faults and pack integrity.
South African food rules that inspection supports
R146, R638, legal metrology, FSSC 22000 and GS1: what they require on the pack, and which parts a camera can check.
South African food rules set what must be on the pack and in what condition; none of them prescribes camera inspection. Vision is one way to check, on every unit, the visible parts of what the rules require. The main rules a food or beverage plant works to:
- R146 (labelling, 2010): a batch number on every container (regulation 11); a clearly indicated date with “best before”, “use by” or “sell by”, numeric dates in day-month-year order (regulation 12); label information clearly visible, legible and indelible (regulation 7); common allergens declared (regulation 43). Label, date code and batch code checks cover the visible side of these.
- R638 (hygiene, 2018): contamination includes foreign matter; prepacked food must be sealed so it cannot be removed without the seal being broken; records are kept for at least six months after shelf life, with a traceability system and a recall procedure. Cap, tamper band and seal checks, and results stored per batch, support these.
- Legal metrology: quantities within the SANS 458 tolerances, and a duty for users of automatic fillers outside the “e” mark scheme to detect incorrect quantities and keep check records. Fill level checks catch under-filled containers; weighing proves quantity.
- FSSC 22000 version 6: products labelled to the law of the country of sale, including allergens (2.5.2(a)); quantity control (2.5.9(b)); changeover controls that remove the previous run’s labels and packaging (2.5.9(c)).
- GS1 South Africa: many retailers require its barcode test report, to ISO/IEC 15416, when a product is listed.
- BRCGS guidance (Issue 8 FAQ, clause 6.2.4): online label and code verification equipment should be challenged with incorrect packs, including the reject and the no-read alarm.
Wrong-pack and allergen incidents on shared lines
The National Consumer Commission’s published recall notices include a case where a food product was packed into the packaging of a different variant, so its allergens were not declared. Lines that run several flavours or recipes in similar packaging carry exactly this risk at every changeover. A label check that reads the pack’s barcode or artwork and compares it with the product being run stops the first wrong pack; it cannot tell whether the product inside matches a correct pack.
Cans: dents and damaged ends, and what a camera cannot see
R638 prohibits selling canned food in a container that is blown, badly dented or damaged, leaking or unsealed. The NRCS lists seam defects, leaking cans and cans with pinholes among the non-conformances it finds. A camera can find visible dents, damaged ends and missing or wrong codes on cans. It cannot see inside a double seam or find a pinhole; those need seam inspection and leak testing.
Sources for this section
- Regulations relating to the labelling and advertising of foodstuffs (R146, 2010) (gazette copy, read 2026-09-25)
- Regulations governing general hygiene requirements for food premises (R638, 2018) (gazette, read 2026-09-25)
- Legal Metrology Regulations (Government Gazette 41854, 2018) (gazette, read 2026-09-25)
- FSSC 22000 Scheme Version 6, Part 2 (scheme document, read 2026-09-25)
- GS1 South Africa: barcode verification service (read 2026-09-25)
- BRCGS Food Safety Issue 8 FAQs (read 2026-09-25)
- National Consumer Commission: product recalls administered in Q1 2024/25 (read 2026-09-25)
- NRCS food inspection presentation (canned product non-conformances) (read 2026-09-25)
Conditions specific to food and beverage lines
These decide whether a station keeps working through cleaning and changeovers.
Cleaning regime
Housings with a suitable IP rating (IP67 or higher where washdown hits them), cable glands and cable routes in the wash zone are chosen for your cleaning method and chemicals.
Cold containers sweating
Droplets on cold-filled containers scatter light and can look like defects. Lighting angle and check position are chosen to limit this.
Foam and moving product
Foam can hide the true fill level, and liquid still moving after the filler leaves an uneven surface. The check goes where the level has settled.
Glass, PET and cans
Clear containers usually need a backlight to show the fill line. Glass reflects; aluminium cans and opaque containers hide the level altogether, so cans are checked on the lid, end and code.
Many SKUs, frequent changes
Each product needs a recipe. Selecting it from the line PLC at changeover avoids checking a new product against the old reference.
Mounting around open product
Brackets above open product are agreed with your hygiene team so they can be cleaned. Where possible, equipment sits after the product is closed.
What vision does not do on a food line
We agree these boundaries before a project starts.
Needs another method
- Food safety testing. A camera does not test the product or replace microbiological or chemical testing.
- Foreign bodies inside the pack. These need metal detection or X-ray inspection.
- Seal integrity. A cap can be present and straight yet not sealed. Leak tightness needs a leak tester.
- Net content. Fill level is not weight; declared quantity is proven with a checkweigher.
Works reliably when
- Containers arrive consistently. Stable spacing, with a trigger at the inspection point.
- Lighting is shielded. A shroud keeps daylight and wet reflections out of the image.
- Recipes follow the product. Selected by the PLC when the SKU changes.
What to send for a sample test
We test your own containers before proposing a station; quantities and shipping are agreed first. The same samples later define acceptance.
Sample preparation guideGood product
Units from normal production, covering each container and label on the line.
Defect samples
Under-filled, badly capped, mislabelled and miscoded units, each marked.
Product behaviour
Whether it foams, is filled cold or hot, and arrives wet at the check.
Acceptance
False rejects on good product and missed defects on marked samples, at line speed; levels agreed per project.
Food and beverage lines in detail
Three groups of lines with their own stations, South African rules and budgets.
Bottling and canning
Returnable crates, multipacks, can-end codes and dents, wine labels.
Dairy, juice and bakery
Yoghurt cup lids and dates, straws on portion packs, bread bag closures.
Meat, staples and dry goods
Weigh-price labels on trays, sachet and pouch codes, maize meal bags.
Why manual inspection struggles on these lines
Conditions on food and beverage lines that make checking by eye unreliable over a full shift.
- Speed. Filled and capped containers pass faster than anyone can look at each one, so manual checks become samples, and faults between two samples go on.
- Washdown and condensation. Wet, sweating containers and spray from cleaning make labels, codes and fill lines harder to judge by eye at the line.
- Foam and moving product. Right after the filler the surface is still moving and may foam, so a fill level judged by eye is a guess on an unsettled surface.
- Many SKUs. Flavours and pack sizes share similar labels and caps; after a changeover the wrong label can look almost right.
- Shift fatigue. Wrong codes and missing caps are rare, so hours of watching correct packs make the one faulty pack easier to miss.
These are reasons to automate the checks that are defined and visible, and to keep people for judgement and for fixing causes. The guide to manual or automated camera inspection compares the two.
Line solutions for food and beverage
Complete stations for lines in this industry, with hardware and installation scope; sourced indicative budgets are in rand excluding VAT, and other scopes are quoted after sample assessment. All line solutions →
| Line solution | Faults it catches | HIKROBOT configuration | Indicative budget (excl. VAT) |
|---|---|---|---|
| Crate inspection | Missing, foreign and capped bottles; debris in empty crates | Overhead camera + VisionMaster, crate diverter | R 250 000 – R 1 370 000 |
| Multipack inspection | Missing bottles or cans, missing caps, wrong product in the pack | Top-view vision sensor, or top + side cameras, pusher | R 80 000 – R 660 000 |
| Can inspection | Missing, smudged or wrong can-end codes; visible dents in the can body | OCR vision sensor; four side cameras + VisionMaster DL | R 100 000 – R 1 180 000 |
| Straw applicator inspection | Straw missing, doubled or skew; cap missing; date code missing or unreadable | Two HIKROBOT vision sensors after the applicator, air jet | R 110 000 – R 390 000 |
| Yoghurt cup inspection | Foil lid missing or lifted; best-before and batch code missing or wrong | Vision sensor or two cameras + VisionMaster over the lanes | R 110 000 – R 680 000 |
| Bread bag closure inspection | No clip or tag; date on the bag missing, unreadable or wrong | OCR vision sensor, or colour camera + VisionMaster DL OCR | R 80 000 – R 540 000 |
| Weigh price label verification | Missing or wrong labels, wrong product, unreadable barcode, wrong date | Code reader + vision sensor or colour camera, tray pusher | R 160 000 – R 740 000 |
| Wine bottle label inspection | Missing, skewed or wrong labels; capsule or seal missing; code unreadable | 4–6 area cameras around the bottle + VisionMaster, reject | R 350 000 – R 1 170 000 |
| Pouch inspection | Missing or smeared codes; product in seal, folds, open edges; short cartons | Vision sensor on the code, line scan over seals, air-jet reject | R 80 000 – R 930 000 |
| Maize meal bag inspection | Wrong bag stock for the grade; missing or unreadable code; bag not closed | Vision sensor or 2 cameras in dust housings, bag reject | R 110 000 – R 770 000 |
| Egg pack inspection | Missing eggs, open lids, missing grade or date mark, visibly cracked eggs | Two vision sensors or two cameras with deep learning | R 180 000 – R 850 000 |
| Bottled water line inspection | Missing or crooked caps, broken bands, short fills, skewed labels, missing codes | Two vision sensors with backlight, or four views on a controller | R 190 000 – R 930 000 |
| Food tray seal inspection | Food reaches the tray flange; Film is folded or off-centre | HIKROBOT area-scan cameras with task-specific lighting and PLC quality release | Quotation after sample assessment |
| Food packaging version verification | The previous product’s labels remain on the line; The barcode is right but the artwork is old | HIKROBOT camera/reader selected for the actual identifying feature with task-specific lighting and PLC quality release | Quotation after sample assessment |
| Bakery product vision inspection | Broken biscuits reach packing; Surface appearance varies | HIKROBOT area-scan cameras with task-specific lighting and PLC quality release | Quotation after sample assessment |
| Returnable glass bottle inspection | A mouth is visibly chipped; Something remains at the base | HIKROBOT cameras positioned for mouth, base or sidewall tasks with task-specific lighting and PLC quality release | Quotation after sample assessment |
Food and beverage inspection questions
Can a camera detect under-filled bottles?
How are date and batch codes checked on a bottling line?
Can units in a case or multipack be counted before it is sealed?
What are common food labelling mistakes?
How does inspection help if there is a recall?
Does vision inspection replace food safety checks?
What does a bottle cap inspection system check?
Can yoghurt cups and foil lids be inspected on the line?
Choose a food or beverage inspection by process step
Separate product appearance, packaging identity and package integrity when defining the project. Each has different sample needs and a different acceptance question; one camera result should not silently stand for all of them.
| Decision or event | Check or action | Acceptance boundary |
|---|---|---|
| Before packaging | Inspect visible product shape, breakage and arrangement | Appearance is not a microbiological or hidden-contaminant test. |
| Sealing | Inspect accessible flange/lid regions and visible folds | Retain the required leak and seal-strength methods. |
| Packaging changeover | Match label, film and case versions with the approved order | The station enforces approval; it does not approve artwork. |
| Returnable bottle preparation | Check specified visible mouth/base/wall defects after washing | Chemical cleanliness and microbiology need separate controls. |
At assessment, provide real pack materials, normal variation, defective samples, line spacing, moisture and cleaning conditions, and the physical reject route. New scopes are quoted from that evidence rather than assigned a generic camera price.
Tray seals · Packaging versions · Bakery appearance · Returnable bottles
Request an assessment for your line
Tell us the containers, SKUs, faults and cleaning regime. We will say which checks apply and what a sample test needs.