The know-how about twist off caps
Metal cap plays important role in canning industry, for example, the glass jars are usually packaged with metal caps, like twist off caps (also named as lug caps), BRP caps, ROPP caps, aluminum caps, RO caps, screw caps. Among the caps, twist lug cap is the most popular metal closure for food and beverages, BRP cap is the high quality closure with superior oxygen barrier properties, continuous thread tinplate screw cap is old fashioned style and excellent in sealing properties, continuous thread aluminum screw cap is light in weight, with organic aesthetic appeal, classic canner cap is popular in the market and becomes the iconic home canning design, unishell cap is designed with clean lines, smooth finish and high-end appeal, omnia closures is made of aluminum, RO cap and ROPP cap are used widely in glass bottles and jars. In this article, we will explain the classifications of twist off caps.
Metal Lug caps (also known as twist off bottle caps) have a unique threading system which only requires a partial turn to open or close. A bottle cap or bottle top is a closure for the top opening of a bottle. A cap is sometimes colorfully decorated with the logo of the brand of contents.
In twist off cap sector, the lug caps are commonly named as abbreviated name as below.
RTO RTB RTS RSB MTO MTB DWO DWB DTO DDO FAS FAO FAB FSB EDGE
RTO (regular twist off cap)
RTB (regular twist off cap with safety button)
RTS (regular twist off cap with step)
RSB (regular twist off cap with step and safety button)
MTB (twist off medium wide mouth cap with safety button)
MTO (twist off medium wide mouth cap)
DWB (twist off deep drawn cap with step)
DWO (twist off deep drawn cap)
FTO (twist off fluted cap without step)
FSO (twist off fluted cap with step, without button)
FTB (twist off fluted cap without step, with button)
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