MB-70 is a modern aluminum system, used to perform architectural and external elements requiring thermal and acoustic insulation, for example: various types of windows, doors, vestibules, sites, spatial structures.
The system profiles have a three-chamber structure. The structural depth of the window sections is: 70 mm (frame), 79 mm (leaf), and the door is 70 mm and 70 mm, respectively. Such assumed depths of the sash and frame sections give the effect of one plane from the outside after closing – in the case of windows and the effect of flush surfaces of the sash and frame – in the case of doors. The shape of the profiles allows for slender and durable window and door constructions.
The MB-70 system is characterized by a sensationally low value of heat transfer coefficient U due to the use of special thermal breaks and gaskets. This is of great importance in the era of growing requirements in the field of energy management and environmental protection. The Uf factor for the construction of the MB-70 system depending on the profiles and accessories used is from 1.5 to 2.39 W / m2K. The system uses profiled thermal breaks in the shape of omega with a width of 34 (windows) and 24 (doors) mm made of polyamide reinforced with fiberglass. The offered shape of the spacers increases the stiffness of the profiles in relation to the flat spacers and facilitates drainage of sections thus ensuring proper thermal insulation in all weather conditions. Thermal separators used in windows have additionally a seal at the joint between the section and the dividers, as well as projections dividing the chamber between internal and external aluminum profiles into three parts.
Tightness is ensured by the use of special gaskets made of two-component synthetic EPDM rubber: solid and cellular, which guarantees resistance to aging during long-term operation and very good thermal insulation. MB-70 is the first system in which this kind of material was used to make the central gasket.