Method for applying barrier before or behind door of building, involves forming slider and bellows near lateral sides, and injecting foam in bottom of shot extending cavity after placing shot, such that bellows expand against strips

摘要

The method involves installing strips (11) on either sides of a door against an embrasure of a doorway bounding wall, where each strip is equipped with a hole. A shot (13) is placed between the strips, where the shot has main surfaces (17), transverse planes and top and bottom. One of the main surfaces is formed in the bottom of a shot extending cavity. A slider and bellows (45) are formed near lateral sides. Foam is injected in bottom of the shot extending cavity present in the bellows after placing the shot, such that the bellows expand against the strips.