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How to close the lid? and UN certification? Mar 21, 2018

Lids and closures

RL lidRL lidTT lidTT lid

In principle, the cylindrical tin containers can be closed by hand. A lid shutting unit can relatively easily be integrated into the filling line at greater filling speeds. The smaller sizes (up to 1 litre) generally have RL closing. In this closing, the lid falls onto the inside of the ring and closes there as well. Some 500 ml and 750 ml tin containers have a TT closing. A TT closing has a double shape in the top of the ring, and the lid falls into the ring. The TT closing is particularly suited to adding colour to paints and lacquers (colour mixing system), because resealing is easiest and the quality of the reseal is highest. The car paintwork industry often works with a mixing lid. These generally connect best to TT closings.

In absolute terms of airtightness, the RL closing is a tighter closing than the TT closing. However, both varieties are very suitable for the packaging of paints and lacquers.

Transport and UN certification

UN certificationUN certification

We are able to offer a UN certified version for the transport of hazardous materials in cylindrical tin containers. The UN certification is obtained through a special adhesive compound that is applied in the TT ring of the tin container. This sticks the lid even firmer onto the paint tin than normal.