Which food company first introduced the resealable 'Zipper' packaging for shredded cheese that later became an industry standard?

Product packaging in the food industry has evolved dramatically over the decades, often with innovations that changed how we consume everyday items. Some packaging designs have become iconic, while others have solved major distribution or freshness problems. Test your knowledge about a revolutionary food packaging innovation that transformed an entire product category!

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Kraft Foods
Sargento
Tillamook
Borden Cheese