FIELD: production of constructional materials. SUBSTANCE: apparatus has press tips with cavity-forming members. Inner channels of cavity forming members are connected with screening substance source under pressure. Each cavity-forming member has nozzle disposed at its outlet end and provided with atomizing opening oriented towards inner surfaces of constructional product walls. Nozzle has two parts, which allow nozzle slit space to be regulated in accordance with type of substance used for building heat-reflecting screen. EFFECT: improved quality of product, wider operational capabilities of apparatus and enhanced reliability in operation. 4 cl, 3 dwg
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