What is reason of FFS bottle paneling?
bottles that are hot filled and sealed before cooling. As the product cools, the contents and/or the air in the headspace contract, creating a negative pressure within the bjottle. This negative pressure can cause the side panels to suck in to compensate for the loss of product volume.
Oxygen may also be reacting with one or more of the product’s ingredients. Since oxygen comprises about 16 percent of the volume of air, reducing its concentration can significantly reduce the bottle’s internal pressure, leading to bottle paneling.
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