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.
How to Freeze Sweet Corn Kernels and Cream-Style Corn: 1  Obtain Fresh Sweet Corn. Select the best corn on the cob you can get your hands on. 2  Prepare Containers and Boiling Water. Get your freezer containers out and make sure they are clean and ready to use. 3  Blanch the Corn. Submerge the ears in the boiling water.  Cold Water Bath.