The Engineering Behind Stackable Chips

Have you ever opened a bag of potato chips eagerly anticipating a crisp snack, only to find a pile of shattered crumbs submerged in a pocket of air? For decades, this frustrating experience was an accepted reality for snack lovers. Traditional potato chips were inherently fragile. Because they were made from thin slices of raw potatoes, their irregular shapes made tight packaging impossible. During shipping, they bounced around inside flexible plastic bags, resulting in greasy fingers, broken chips, and product that quickly went stale when exposed to oxygen. In the mid-1950s, executives at Procter & Gamble set out to eliminate this persistent problem once and for all.

To revolutionize the snack industry, the company enlisted Dr. Fredric Baur, an organic chemist and food storage specialist. Baur approached the assignment not merely as a culinary challenge, but as a complex structural engineering puzzle. He quickly recognized that natural potato slices could never yield consistent results because potatoes vary naturally in size, moisture content, and shape. Instead, Baur developed an entirely new formula: he created a moldable dough using ground dehydrated potato flakes, cornstarch, water, and seasonings. This uniform dough could be rolled into thin sheets and stamped into identical shapes, laying the foundation for a completely re-engineered snack.

The true scientific triumph of Baur's invention was the specific geometry he selected for the chip. He chose a distinct mathematical shape known as a hyperbolic paraboloid, which resembles a smooth, double-curved saddle. This shape was a masterpiece of physical engineering. Because a hyperbolic paraboloid curves in two directions simultaneously, it possesses no single flat plane or linear weak point where a fracture can easily begin. When impact occurs during transport, the physical force distributes evenly across the entire surface of the chip. This structural stability allowed the chips to be stacked in tall, neat columns without the bottom chips crumbling under the weight.

To complement his engineered chips, Baur designed a revolutionary packaging system: a rigid, airtight cylindrical container made from cardboard lined with aluminum foil and sealed with a removable plastic lid. Unlike traditional flexible bags that offered no physical defense, Baur's sturdy tube acted as a protective shell, shielding the contents from being crushed. Furthermore, because the chips were packed tightly in a vertical column, minimal air remained inside the canister, keeping the chips fresh for unprecedented lengths of time. Although researcher Alexander Liepa later perfected the mass-production process and flavor profile, Baur’s physical design formed the foundation of the brand launched in 1968 under the name Pringles.

Baur was immensely proud of his structural design and considered the tubular container the crowning achievement of his career. His devotion to his creation culminated in one of the most unusual final requests in modern history. Before his death in 2008 at the age of 89, Baur instructed his family that he wished to be buried inside his signature creation. Honoring his extraordinary request, his children stopped at a grocery store on the way to the mortuary to purchase a classic Original flavor tube. They placed a portion of his cremated ashes inside the container and buried it alongside his main urn. Today, every time consumers pop open a tube of stackable chips, they enjoy a product born from organic chemistry, geometric architecture, and remarkable passion.