Rapid folding door for opening or closing bay to permit passage of e.g. vehicles, has cellular polyurethane foam layer rigidifying, weight-increasing and insulating each panel to maintain cross section of drape on surface of each post

摘要

The door has a flexible drape (4) occupying closing and open positions and with transversal reinforcement bars (19) whose crank shaped seats are respectively engaged in guiding sliders (5) of posts (2) of a support structure. A cross section (22) of the drape defined by the bars has panels (23) connected to each other by a hinge (24). Each panel is formed by two flexible clothes (25) between which a cellular polyurethane foam layer (26) is interposed. The layer rigidifies weight-increases and insulates each panel to maintain the section in support on a plane surface of each post.