Optimizing a French Fry or Chips Line, Stage by Stage
Efficiency on a fry or chips line rarely comes from one machine. It comes from every stage running at the same throughput, with steady feed and few stops. Here is where to look, stage by stage.
Bigtem USA engineering guide · updated October 2026
Receiving and size grading
Even feeding sets the rhythm of the whole line. A hopper with a controlled belt avoids surges into the washer and peeler. Grading out undersize and oversize tubers early protects yield in cutting.
Washing and stone removal
Stones damage peelers and knives. A destoner and drum washer ahead of the peeler protect everything downstream, and water re-circulation keeps consumption in check.
Peeling
Peel loss is raw material lost. Steam peeling with PLC recipes per variety keeps the peel consistent; abrasive peeling suits smaller lines and chips lines. See steam vs abrasive.
Cutting
Water-knife cutting with a dual head that switches automatically when a knife is dull or blocked keeps the line running and strip quality even. Sliver removal right after cutting keeps short pieces out of the fryer.
Blanching, dewatering and drying
Two-stage blanching sets texture and color. Dewatering and belt drying control surface moisture before frying, which steadies the fryer load and oil use.
Sorting
Where defects must be removed automatically, an optical sorter integrated from a partner manufacturer can be placed after cutting or blanching. Bigtem integrates it into the line.
Frying and cooling
A continuous fryer with oil filtration holds oil quality. Ambient cooling ahead of the freezer drains oil and lowers the freezer load.
Freezing and packing
Freezing uses an IQF freezer integrated from a partner manufacturer, selected to fit your line. Packing can start manual and be automated later with Bigtem weighing, bagging, metal detection and robot palletizing.
Chips lines
Chips lines share the front end (washing, peeling) but slice thin, wash off starch, fry in a continuous or batch fryer, de-oil, season and pack. See the chips line.
Where the gains really come from
Most gains come from steady feed, consistent peeling, sharp knives, controlled moisture before the fryer, and few stops. Build your own numbers with the free ProcessorROI calculator.
Build your equipment ROI case with the free ProcessorROI calculator. A free online tool for rough labor, yield, energy and payback estimates you can bring to a capex meeting. Enter your own plant numbers.
Open the ProcessorROI calculator (external site, opens in a new tab) ↗
Related: French fry line, machine by machine · Layout guide
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