FIELD: process engineering.
SUBSTANCE: fiber glass tubular high-density insulator is fabricated by producing fiber glass needled mat with its opposite sides furnished with cutouts made in positions shifted relative to each other. Note here that at least one surface of aforesaid mat is coated with binder prepared by mixing organic and inorganic substances, fire retardant and water, and selective mixing of substance that features water repellant properties with mix obtained there before. Aforesaid mat is pressed with the help of pressing roller to allow winding the mat onto forming roll. Pressed glass fiber tubular insulator is dried prior to removing it from aforesaid forming roll and cut at its center. Aluminium tape reinforced by crossed glass fiber is applied to insulator outer surface and insulator end faces are cut off.
EFFECT: higher adhesion at higher temperatures with no coking.
7 cl, 13 dwg
