This is an inclined packing shelf that can be installed in the machine chamber to replace the horizontal one.
It allows vacuum packing of liquids due to a purely physical feature. Gravity keeps the liquid on the bottom of the bag allowing the vacuum pump to remove the area that takes up the top of the bag.
However, the bag must not be over halfway full and particular attention must be paid to the temperature since the boiling point of water is drastically lowered in a vacuum.
Inclined packing shelves designed for models: