It is sometimes convenient to categorize packages by layer or function: primary, secondary, etc. 1  Primary packaging is the material that first envelops the product and holds it. 2  Secondary packaging is outside the primary packaging, and may be used to prevent pilferage or to group primary packages together.
Does Corn Need To Be Refrigerated? Corn does not typically need to be refrigerated in order for it to be safe to eat. You will want to be aware of the fact that the longer you keep your corn in the refrigerator, the more flavor and vitamins you will lose, so it will not have quite as much nutritional value or taste to it.
Properly stored, raw corn on the cob will usually keep well for about 1 to 3 days in the refrigerator. How long does corn on the cob last in the fridge once it has been cooked? Cooked corn on the cob will usually stay good for 3 to 5 days in the refrigerator and 10 to 12 months in the freezer.