Guides

A clear guide to standard ROPP cap sizes, expressed as diameter by height in mm. See the size chart, how to measure a bottle neck, and how to specify a size.

A clear guide to the main types of bottle caps, their materials, uses, and tamper-evidence, written for Indian brands choosing closures for water, beverages, and more.

ROPP capping forms threads and a tamper-proof band from a plain aluminium shell onto the bottle. Learn how the process works, its equipment, and uses.

A clear guide to ROPP cap parts: the aluminium shell, top panel, liner, knurls, threads, pilfer-proof band and skirt, with a parts-at-a-glance table.

ROPP cap full form explained: ROPP stands for Roll-On Pilfer-Proof. Learn what each word means, why the name exists, and where the term is used.

A ROPP cap is an aluminium closure threaded onto the bottle during capping. Learn how it works, its tamper-evident band, liners, and common uses.