Information about the Sieg-Mi-Flex
By using the migration cell System-Siegwerk (Sieg-Mi-Flex), a migration estimate of the packaging contents from food packaging can already be conducted using the finished rolls of material.
Tests have shown that the diffusion-induced temperature compensation is sufficient if a Siegwerk (Sieg-Mi-Flex) migration cell system filled with a simulant stays upright for 24 hours.
No rotation is required. The Siegwerk (Sieg-Mi-Flex) migration cell system can be easily opened and closed using stainless steel knurled screws. During temperature conditioning in drying cabinets or bath/circulating thermal regulators, its compact design enables it to be stored both horizontally and vertically.
The Sieg-Mi-Flex migration cell system can be used to test many packaging sizes and strengths with the broadest range of material properties with all liquid and solid food simulants.
For tests with solid food simulants (E) poly(2,6-diphenyl-p-phenylene oxide) (MPPO), the Tenax kit is used. Some customers also use the Tenax kit for migration tests with oil as the fixing plate with the GL45 connecting pieces is easier to clean in a dishwasher than the central rings with GL14 cast-in and cast-out connecting pieces.
In this case, the Siegwerk (Sieg-Mi-Flex) migration cell system is subjected to the test conditions while positioned horizontally one test specimen at a time. Thanks to the high temperature resistance (-20 °C to 180 °C) and the high pressure seal up to 9 bar, stainless steel Siegwerk (Sieg-Mi-Flex) migration cell systems can also be used for liquid food simulants under testing conditions above their boiling point.
Pressure test for a stainless steel Siegwerk (Sieg-Mi-Flex) migration cell system
A fixing plate made from V4A stainless steel has been subjected to 10 bar pressure using the finite element method (FEM).
Result:
The maximum deflection in the centre of the fixing plate was < 0.2 mm. A liquid pressure test was also carried out under at least 1.33 times the test pressure of 9 bar at room temperature, and at the test pressure of 13 bar. The pressure test did not result in any objections.
