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Jason		 Why is mayo and ketchup packaged in those little tin/film like layers? View All


17 years ago - 8 months left to answer. - 2 responses - Report Abuse
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tom tom
 There are two layers: First layer is the LDPE and it is mainly used as a heat sealer. The second layer is the thin metal foil and it is used to slow down and stop light decomposition. Moreover, foil is a sufficient and cost effective material to prevent leakage.



17 years ago

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MR
 The tin does not cost a lot
MR

17 years ago

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