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.
Most brands of peanut butter don't need to be refrigerated. For at least three months, their flavor quality will remain unchanged. However, this isn't true for many natural peanut butters -- those should be refrigerated after opening.hile you may not store your pancake syrup in the fridge, 100 percent pure maple syrup should be refrigerated after opening to prevent mold from forming. Honey will stay good indefinitely out of the fridge. And if it is refrigerated, it will become so thick that it's difficult to pour.