Cold-pressed juice
Making cold-pressed juice is a two-step process. The first stage is to shred the fruits and vegetables into a pulp. Typically the shredding process uses a steel rotating disc. Produce is loaded into a large hopper feeding tube and typically falls into a filter bag. The second process is the hydraulic press; this exposes the shredded produce to extreme pressures between two plates. The pressure causes the juice and water content from the produce to drip into a collection tray below, leaving behind the fibre content in the filter bag. The fibre left behind is generally composted, recycled in food products or discarded.
Pressing (wine)
Batch presses typically operate in a cycle that can be mechanized or manual. This involves the following steps:
The benefit or rotating the tank or breaking up the cake is to promote a more even pressing and formation of a regular-shape cake that will be easier to move. From the moment that grapes are filled into the tank or basket, juice is being released and extracted. This juice is usually drained by the tank into a waiting container or "press pan" that is then transferred or pumped into another container.