The potato chips and snacks line, station by station.

A potato chip line turns raw potatoes into sealed, seasoned bags of crisps, and every station on it affects the colour, crunch, oil content and weight of the final pack. The line starts with peeling. After intake, washing and destoning, potatoes pass through a steam or abrasive peeler. Peel loss matters here because every piece of good flesh removed is lost yield, while skin left on shows up as dark specks in the finished chip. Inspection belts and trimming follow. Slicing comes next. Centrifugal slicers cut potatoes into thin, even slices, flat or crinkle. Slice thickness consistency is critical, because thin and thick slices fry at different rates. Slices are then washed to remove surface starch and dewatered to remove surface water before frying. The fryer is the heart of the line. Continuous fryers carry slices through hot oil on paddles and submerger belts, driving off moisture and developing colour and crunch; batch kettle fryers give a harder bite for premium ranges. Oil turnover, filtration and temperature control decide product quality, shelf life and acrylamide levels. After frying, de-oiling and optical sorting remove excess oil and dark or defective chips. Seasoning follows, either centrally or on-machine in front of each packer. Tumble drums coat warm chips with powder, sometimes with oil sprays or electrostatic assistance, and must do so evenly without breakage. Packing starts with the multihead weigher, which combines weigh buckets to hit the target bag weight with little giveaway, feeding a vertical form-fill-seal machine that makes pillow bags from film and flushes them with nitrogen to keep chips fresh and cushioned. Finally, the checkweigher confirms each bag is within weight limits and the metal detector checks for metal contamination, rejecting failed bags before case packing and palletising. Where bags use metallised film, which limits standard metal detection, plants fit a gravity-fall metal detector above the bagger or use X-ray inspection on the sealed bags instead. On a well-balanced line, each station is sized so the fryer runs steadily and the packing hall never starves or floods.