FIELD: separating material. SUBSTANCE: diaphragm has two half-round portions facing the end faces of the reservoir of the press and middle rectangular portion of the diaphragm connected with them from both sides. The diaphragm is made up as a cloth covered with synthetic material from both sides. The half-round portions of the diaphragm are separated into segments by radially passing bisectors. EFFECT: enhanced reliability. 9 cl, 5 dwg
