FIELD: treatment of synthetic materials. SUBSTANCE: hydraulic pulsation press has hydraulic plunger indexing drive and hydraulic drive for providing tangential-oscillating motion of plunger. This drive is made in the form of pulsed-action hydraulic engine driven by hydraulic pulsator. Hydraulic engine is incorporated in press hydraulic cylinder. EFFECT: increased efficiency and simplified construction. 3 cl, 4 dwg
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