Each day, J.R. Simplot's Caldwell, ID, plant produces more than two million lb of frozen french fries and hash browns for major nationwide foodservice accounts like McDonald's and Burger King. The fries are packed into bags that hold between 41/2 and 61/2 lb of product. Six bags are loaded into an outer corrugated shipper holding either 27, 30, 36 or 39 lb. Until last year, cases containing as much as 2 oz more than these targeted weights were tolerated by Boise, ID-based Simplot. even with the lightest case size, 2 oz represents less than 1/2 of 1% of the total case weight. But small as that may be, more accurate checkweighing was sought. It wasn't just overweights that were problematic, either. The occasional underweight case also posed difficulties, particularly because cases were checkweighed after they were sealed. "If a case fell below a customer's specification, we'd have to tear it apart and repack it with bags that would meet the case-weight requirement. That would waste the finished case," says Martin Greenbank, Simplot's packaging maintenance manager. Opening sealed cases and repacking the bags also upped labor costs. To improve the accuracy of its case weights, Simplot added Model HW-15 checkweighing systems from All-Fill (Exton, PA). These checkweighers provide ±1/2 oz per case accuracy, a 75% improvement from the checkweighers used previously. Simplot now has two checkweighers on each of the three lines where inaccurate case weights had been a problem. Using two machines per line means that if one checkweigher goes down, it won't stop the line. This is the kind of redundancy that Simplot values and has incorporated throughout the three lines (see sidebar, page 24). Simplot made one other key change to its checkweighing process. Unlike its previous arrangement, Simplot now weighs cases before they're sealed, eliminating the previously costly step of opening and repacking cases whose weights fell outside acceptable tolerances.
J.R. Simplot weighs accuracy's advantages
Checkweighers improve accuracy by 75% on cases containing bagged frozen french fries for foodservice.
Mar 31, 1997
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