FIELD: package and storage.
SUBSTANCE: according to the present invention, new cover and crown designs are proposed, suitable for small and light weight carbonated carbonation packages, which provide unexpectedly improved retention of carbon dioxide and longer storage life, while still providing light weight.
EFFECT: these cover and rim presented in this document are suitable, in particular, for small PET containers for carbonated beverages, for example, with volume less than or approximately 400 ml, and provide good retention of carbon dioxide and storage life.
12 cl, 27 dwg, 6 tbl
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