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do these snack bags have metalic material in them strictly for the graphics to have gloss and shine? What purpose does it serve?
by jxramos 9y ago
do these snack bags have metalic material in them strictly for the graphics to have gloss and shine? What purpose does it serve?
- THE_PUN_STOPS 9y agoPorosity. The metallic material is to cut down on air transfer.
- jxramos 9y agoI love being surprised, I would have never guessed that. Very cool. Porosity of bicycle inner tubes is an inconvenient problem for me and others, I don't suppose a metalic layer would work in that application however with the expansion and all. Cool to know though.
- namibj 9y agoYou could make it being crumpled and that way being flexible. The expansion is not that bad.