Tiny technology is secret behind many of 3M's biggest products

MPR uncovers some fascinating facts in a feature on 3M's microreplication technology: A microreplication machine is large enough to fill a house, but even most of the company's own employees aren't allowed to see them. The technology can make road signs better reflect headlights and dramatically improve abrasives, and now the company hopes to use it to develop patches of microscopic needles that would deliver vaccines painlessly.
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MPR uncovers some fascinating facts in a feature on 3M's microreplication technology: A microreplication machine is large enough to fill a house, but even most of the company's own employees aren't allowed to see them. The technology can make road signs better reflect headlights and dramatically improve abrasives, and now the company hopes to use it to develop patches of microscopic needles that would deliver vaccines painlessly.

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