Aluminum Jars, Aluminum Caps: Why Induction Sealing Fails — And The Foil Liner That Works 2026-11-09
Aluminum jars with matching aluminum caps are a familiar sight in skincare: horse oil balms, petroleum jelly, rich creams and ointments. The format looks substantial, feels cool in the hand, and gives a brand a clean all-metal presence on shelf. Yet one part of that package is usually decided by constraint rather than by design — the seal liner.
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