A roll-on pilfer-proof (ROPP) finish design for aluminum screw-cap PET bottles is now available to meet growing market demand for premium packaging for the wine and spirits segments. These new 1.75L and 750ml stock PET bottles are light weight and, with the ROPP finish design, enable a smooth conversion from glass to PET with minimal changes on the glass filling line. The ROPP finish bottle design also permits the elimination of a neck support ring which enhances aesthetics. For the 1.75L stock bottle, a standard plastic pour restrictor—typically used for glass bottles—is incorporated inside the bottle neck to prevent spillage.
Source:
http://www.packagingdigest.com/article/522867-Screw_cap_finish_on_spirits_bottles.php
