FIELD: manufacture of gypsocardboard sheets. SUBSTANCE: sheets of facing paper of gypsocardboard sheets are insulators and the gypsum suspension contained between the sheets of facing paper has a high conductance, at a detection of electric current flowing between the upper molding block and the lower molding block it becomes possible to quickly find the localized rupture in the upper sheet of paper and/or in the lower sheet of paper caused by getting of an undesirable objective between the mentioned blocks in the course of continuous manufacture of gypsocardboard sheet, and what is more, to easily eliminate the cause of rupture without breaking the continuous process of manufacture of gypsocardboard sheets by letting the undesirable objective pass between the mentioned blocks due to the increase of the gap, at a simultaneous prevention of spreading of the rupture over the entire width of paper. EFFECT: minimized issue of defective products, provided stable and continuous manufacture of gypsocardboard sheets. 6 cl, 6 dwg, 3 ex _
