Sealed Protection: The Birth of Tamper-Evident Packaging

In the fall of 1982, a terrifying wave of random poisonings struck Chicago. Seven people died after consuming over-the-counter Tylenol capsules that had been laced with potassium cyanide. The terrifying reality was that the poison had not been introduced at the factory, but by an unknown killer who simply pulled the bottles off pharmacy shelves, tampered with the pills, and put them back.



The incident sparked nationwide hysteria and threatened to destroy Johnson & Johnson. Instead of hiding behind lawyers, the company initiated a massive, unprecedented recall of 31 million bottles. More importantly, this tragedy forced the entire global retail industry to fundamentally redesign how consumer goods were sealed.



This text explores the rapid engineering of tamper-evident packaging. You will examine the invention of foil seals, shrink bands, and blister packs that immediately became the global standard for pharmaceutical safety.



Understand the dark origins of modern retail security. Learn how a single string of unsolved murders permanently altered the physical architecture of every product we consume today.



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