(57) A hydraulic bale press and a method for compressing bulky goods into bales. The bale
press comprises an inlet section (2), a prepress chamber (3) and a main press chamber
(4). The prepress chamber (3) comprises a prepress (7) having a prepress unit (8)
arranged on a carriage (11) and pivotable around an axis (9). The carriage is reciprocable
between a retracted position leaving the prepress chamber (3) essentially free, and
an extended position in which a first precompression takes place. A second precompression
is made by pivoting the prepress unit (8) around the axis (9) to the position shown
in broken lines, thereby compressing the goods down into the main press chamber. During
the two steps of the precompression, goods are continuously infed. After performing
one or several precompression operations, a main compression is made by means of a
main compression plunger (16), thereby feeding the material into a baling channel
(18), where the bale is formed and treated in a conventional way (Figure 2).
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