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How does that work?

The www.howstuffworks.com Web site is both interesting and informative, and it offers packaging information.

Jan 31, 2004

Pw 13478 Nl Pi Rl Howstuffworks

I came across the site while conducting a search for UPC (Universal Product Code), and found the article How UPC Bar Codes Work .

The article was utterly fascinating, and told me things about the UPC I’d never known. I never knew how the check digit worked, yet this explains it in five easy-to-follow steps.

Out of curiosity, I typed in "packaging" and found articles including these: "How MREs (Meal, Ready-to-Eat) Work," and "How Offset Printing Works." The latter is a multipage primer filled with images.

The article "Why does lettuce in a bag stay fresh longer than a head of lettuce?" offers links to a number of articles about modified atmosphere packaging. Chock full of pictures, this selection may be helpful for someone in marketing.

There are many more pages for packaging-related things, such as "irradiation," which linked to a 10 different articles on food preservation.

If you’re in production or engineering, skimming through "How Marketing Plans Work" may be enlightening, even if only for the length of this scratching-the-surface summary.

The site is only fractionally as exhaustive in packaging as Packworld.com, for instance, but you may find something useful here. But watch out for getting sidetracked. I confess I searched using the keyword "URL" and found this: "How an Internet Search Engine Works." Gosh, I didn’t know that…

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Packaging World Annual Outlook Report 2026

Packaging World Annual Outlook Report 2026

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(from l. to r.) Moderator Matt Reynolds, Packaging World; Sarah Pamplona Santos, Closed Loop Partners; Scott DeFife, Glass Packaging Institute; and Kenneth Laverdure, Estée Lauder Companies.

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25+ vetted systems for cups, tubs, and bottles — shrink, paperboard, banding, clip, and more. Free download.

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Campbell's Revolution

Campbell Wrapper Debuts Updates to Revolution Flow Wrapper at PACK EXPO International 2026

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