PEAT PRESSING DIE Russian patent published in 1994 - IPC

FIELD: peat working. SUBSTANCE: die has a body with a channel and two helical grooves along the entire length of the channel. A converging buckle section is made at the inlet of the channel, and a diverging outlet section - at the outlet of the channel. The surfaces of the buckle and outlet sections have curvilinear generatrices. The helical groove has a variable slope angle at the channel section with constant cross section, the slope angle smoothly transits from 8at the buckle section to 10-12- at the outlet section. EFFECT: improved structure. 2 cl, 4 dwg