What is Ropp Cap / Closures?First, let us understand regarding the ROPP Closure. The Full form of the ROPP Cap is Roll-on-Pilfer-Proof Caps.ROPP Caps are generally made from Aluminium Material. ROPP Caps offer a high level of Protection / tamper proof Security & provide an appropriate and easiest way to seal bottle.Conventional ROPP Caps are available in sizes from 18 mm to 38 mm diameter. Machinery for sealing ROPP Cap over th ... Continue