Years ago, aluminium roll-on pilfer-proof (ROPP) closures, a valuable but unheralded part of the metal packaging world, started to disappear from two-litre soft drink bottles because of consumer injuries caused by closure blow-offs.
Years ago, aluminium roll-on pilfer-proof (ROPP) closures, a valuable but unheralded part of the metal packaging world, started to disappear from two-litre soft drink bottles because of consumer injuries caused by closure blow-offs.
