FIELD: manufacture of building materials. SUBSTANCE: when switch 6 in the source output of high-voltage pulses 5 is switched on high-voltage appears which generates electric current in high-voltage cables located on the surface of shields or inside them. In so doing the mechanical clutch between the plate and the mold shields is disrupted. The article is removed from the mold with less effort. EFFECT: facilitated manufacture. 2 dwg
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