REINFORCEMENT FOR HOLLOW PLASTIC WINDOW, DOOR OR SIMILAR ENCLOSING FRAME ELEMENTS Russian patent published in 2008 - IPC E06B3/22 

FIELD: construction.

SUBSTANCE: reinforcement is made of composite material on the base of artificial reinforcing fibre and polymeric binder in the form of pultrusion moulding. Moulding consists of at least one carrying part and at least one mount part with at least one projection when needed and one surface layer consisting of intertwining and/or intersecting threads when needed. Carrying part has high tensile insert if necessary. Moulding shape is limited by at least one closed in lateral direction shape-generating surface. This produces moulding with open, closed or combined of two mentioned cross section. Structure of moulding composite material is made on the base of reinforcing fiber of 5 to 30 mcm in diameter while its volume content in composite material is from 50 to 92%. The structure is selected with respect to providing ratio of toughness and stiffness of carrying parts to similar parameters of mounting parts ranging from 1:1 to 30:1. At least one carrying part is provided if necessary with at least one projection and surface layer consisting of intertwining and/or intersecting threads. Length of surface layer in lateral direction of at least one mounting and/or at least one carrying part of moulding ranges from 0.1 to 3.0 of specified moulding perimeter length.

EFFECT: increase of frame elements service reliability.

33 cl, 2 dwg