System and cover element for air sealing

Abstract

A system for air sealing of leaks in building corners in a wall portion made up by a framework, including a cover element with two overlapping and plane flexible film portions, which are connected to each other along a first edge portion. The film portions include linear folding lines to enable unfolding of the cover element for forming a three-dimensional geometry including a main surface and a collar which projects from the main surface and is formed integrally therewith and which corresponds to three sides of the beam portion.

1 . A cover element for airtight sealing of leaks at an intersection between a wall portion and a beam portion projecting from the wall portion, characterized by
 two overlapping and plane flexible film portions, which are connected to each other along a first edge portion,   the film portions comprising linear folding lines to enable unfolding of the cover element for forming a three-dimensional geometry including a main surface and a collar which projects from the main surface and is formed integrally therewith and which corresponds to three sides of said beam portion.   
     
     
         2 . A cover element as claimed in  claim 1 , wherein each film portion, in the non-unfolded state of the cover element, has the shape of two triangles, which along their respective bases form a first surface,
 said bases being linearly separated from one another by a distance corresponding to the width of said beam portion for forming an isosceles trapezoidal recess in the respective film portion.   
     
     
         3 . A cover element as claimed in  claim 2 , wherein said edge portions, along which said film portions are interconnected, form said isosceles trapezoidal recess, the short side of the isosceles trapezoidal recess having a length corresponding to the width of said beam portion. 
     
     
         4 . A cover element as claimed in any one of  claim 1 , wherein a first one of said two film portions of the cover element, in the unfolded state of the cover element, forms said collar and the first film portion in combination with the second film portion form said main surface.