Why inside a bag of chips always foil?

Well, not necessarily paper, but in color and metallic reflective ..

Foil is a vapor barrier – he will not allow moisture to make the chips stale. But the cellophane does the same thing and it is quite a common packaging material for chips.

Tortilla Microwave Potato Bag Chili Pepper Blk Orange $8.50

Microwave potato WMN -Buy any 5 bags get a 6th bag free $5.50

Vintage INTERSTATE BISCUIT POTATO Chip Bag BRONX NY $8.95

Bag Lays CHILE LIMON Potato Chips ~ Crisp & FRESH Lime $5.50

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Sweet Potato & Duck Treat $8.07 Wash hands when handling any treat. Supervise your dog when giving him any treat. Duck Meat, Sweet Potato...

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