FIELD: construction materials, in particular, roofing sheet used in construction of storehouses in industrial and agricultural production.
SUBSTANCE: roofing sheet is made in the form of laminated fiber glass plastic manufactured by vacuum molding method. Fiber glass plastic has fiber glass sheets impregnated with binder. Layer of dry fiber glass is arranged between binder-impregnated fiber glass layers.
EFFECT: reduced porosity of outer layer surfaces and, as a consequence, improved water absorption of fiber glass plastic material.
2 dwg
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