Cored plastics profiles and manufacture of frames for windows and the like therefrom

Claim 1

A cored extruded plastics profile suitable for use in the manufacture of frames for panels including wndows and comprising a core of shape-retaining material and a cladding of plastics material extruded therearound, characterized in that the core (1) is of generally rectangular cross sectional shape and in that the cladding (3) provides (a) along one surface of the profile at a locality adjacent one edge of said surface a retaining member (9) for a panel, which retaining member (9) extends inwardly over said surface and is inclined at an angle thereto and (b) along said surface of the profile, at a locality spaced from the retaining member, a rib (11) having an undercut face (23) inclined to said surface at an angle at least substantially corresponding to the angle of inclination of the retaining member (9), the retaining member (9) being severable from the profile to form the profile into an outer frame (42) and being utilized as glazing strips (9') in the manufacture of a corresponding inner frame (40), the glazing strips (9') being arranged, after the insertion of a panel, to abut against the undercut face (23) of the rib (11) of the profile and to be supported by supporting members (47) mounted on said surface of the profile.