attached container onto the neck can be sealed further this method does not require a volumetric adjustment of the intermediate chamber 3 by means of e g an adjustable sidewall because there is no need for the intermediate chamber to hold a defined portion of the dropped material but in general receives the entire material being dropped and the intermediate chamber 3 becomes insensitive against fluctuation in apparent density and thus volume as oftentimes the compaction characteristic of the product changes it is furthermore possible to equip the installation preferably with the advantageous sensor 10 which detects the fill level of the product below the neck outlet 11 with this technique it becomes possible to control the dosing device such that no overfilling can occur otherwise provision of a safety distance would have been necessary between the product level and the neck outlet 11 which would result in a decrease of the compaction speed a further important fact is the transfer of the filled container 7 to a sealed stage in order to ensure a secure closure of the container 7 a certain free space must exist above the product level to enable a reasonable engagement of the tools for sealing the bag also in this case the afore described sensor 10 provides benefits because of its ability to control the compaction process so that the presence of the required free space.