Food packaging

What is food packaging?

Food packaging is the work of taking finished food products, whether bulk items, individually wrapped packs, bottles, cans, or loose pieces, and placing them into the containers that carry them to stores or warehouses. These containers include corrugated cases, folding cartons, trays, bowls, and clamshells. The job starts after the product leaves the production or wrapping line and ends with a closed, sealed container ready to be stacked on a pallet.

A finished unit must hold the correct number or weight of product, arranged in the pattern the case or carton calls for, with no damaged or missing items. Cartons and cases must be formed or erected to the right size before loading, then sealed so the contents stay clean and secure during shipping. For portioned items such as produce or deli cuts, the filled weight must match the number printed on the label within the plant's tolerance.

Workers have traditionally done this job by hand: picking items off a moving line and placing them in boxes one at a time, or feeding tray formers and case erectors manually. This pace limits how fast a packaging line can run and exposes workers to repetitive strain from constant reaching and lifting. Plants that need higher speed, consistent pack patterns, or washdown-safe equipment for wet, sanitary rooms look to automate this step, while the end requirement stays the same: a correctly filled, sealed container that meets the receiver's weight, count, and size specification.

Who relies on food packaging?

• Food manufacturers: plants that make meat, bakery, cheese and frozen-food products for retail and food-service customers. They own the production and packaging lines and buy equipment to fill cases and cartons at the end of the line, so the finished product meets the weight, count and carton style that their distributors and retail customers require.
• Beverage producers: bottling and canning operations that fill containers with drinks and must load them into shipping cases at the same pace as the filling line. They own the bottling equipment and add case-packing machinery so output is not slowed by manual loading.
• Fresh produce packing houses: operations that wash, sort and pack fruits and vegetables into trays, bowls or clamshells for retail sale. They commission packaging equipment because pack weight must match the label, and the container size and crop mix change often with the season.
• Contract packaging providers: businesses that pack food on behalf of brand owners who do not run their own packaging lines. They sell packaging as a service, so they need equipment that switches quickly between products, pack patterns and container types to serve many different customers.

How food packaging robots work

Robots that pack food use a camera or laser to find each item on a moving conveyor, then a gripper or vacuum tool that lifts it into the waiting container. One system first handles product that arrives in a loose pile: a spinning bowl feeder spreads items such as sausages so they fall into a single line on a conveyor, ready for a robot arm to load.

Most packing robots then follow a similar pattern: a vision system locates each product in real time, and the robot arm picks it up and sets it into a case or carton in a pre-programmed pattern, repeating the cycle as products flow past. Some arms use laser guidance to find frozen patties reliably even when lighting or stacking varies. Others use interchangeable grippers to pick one or two cylindrical packages at a time and arrange them inside a shipping case. Food-grade arms built for wet, washdown environments carry out this picking safely next to people, who load empty containers, clear jams, and check pack quality through a touch screen or tablet.

One machine handles the packaging box itself: it forms a flat carton blank into shape, loads the product inside, then folds and seals the carton closed in one pass, working with baked goods, cheese, frozen items and meats. A separate system fills compartmented trays, bowls, or clamshells rather than rigid cases: it uses vision to find each cell and a precision scale to measure the right weight of produce or dairy product before moving to the next cell. Another robot works earlier in the line, before filling starts: it erects flat case and box blanks into their finished shape, adjusting automatically to different box sizes, and passes ready-to-load cases down the line. Operators oversee these systems, prepare incoming product, and change settings when the pack size or product type changes.