Self-sealing sub-frame for window or door frame, has first inner chamber that is internally provided with capsule of expandable material, so that capsule is broken, and expanded material is released to expand to produce union and sealing between sub-frame

Abstract

The sub-frame has a first flange (1) that is provided with a profile (10) and a first inner chamber arranged inside profile. A second inner chamber (11) is delimited by a break element (4) attached to the first flange. The first inner chamber is internally provided with a capsule (3) of expandable material, so that capsule is broken, when breaking the breaking element by a mechanical drive. The expanded material is released to expand to produce union and sealing between sub-frame main portion and the window or door frame. A second flange (2) is provided with two elements (12) and an anchoring flap (13) joined together by insulating material (5). A tongue is provided with a perforating element attached to the break element and adapted to break the break element, and the capsule to release the expanded material. USE - Self-sealing sub-frame for window or door frame. ADVANTAGE - The sub-frame for doors guarantees self-sealing with carpentry frame and improves air impermeability and water tightness. The hermeticity and permeability to water of window or door that is placed on sub-frame is improved. DESCRIPTION Of DRAWING(S) - The drawing shows the sectional view of the self-sealing sub-frame.Flanges (1,2)Capsule (3)Break element (4)Insulating material (5)Profile (10)Inner chambers (11)Element (12)Anchoring flap (13)