In which decade was resealable zipper packaging (Ziploc-style) first introduced for widespread commercial food products?

The way products are packaged has evolved dramatically over time, with innovations that have changed how we interact with everyday items. Resealable packaging was a game-changer that extended product shelf life and improved consumer convenience. This poll tests your knowledge about when this revolutionary packaging innovation was first introduced to mainstream consumer products, transforming how we store and preserve goods after opening.

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1950s
1960s
1970s
1980s