Barrier for preventing plastic bag bursting and mounting method therof

Application Number: 00104975
Application Date: 2000.04.06
Publication Number: 1269457
Publication Date: 2000.10.11
Priority Information: 1999/4/6 DE 19915196.2; 1999/9/21 DE 19945108.7
International: E21F5/14
Applicant(s) Name: Laoeders-Montan AG
Inventor(s) Name: K. Schurt
Patent Agency Code: 72001
Patent Agent: zhao xin
Abstract The barrier against underground gas and coal dust explosions comprises a plurality of plastic bags (2, 3, 6) which are suspended from carrier beams (7) or frames, contain substances retarding or extinguishing flames, have a wall thickness of 70-120 mu m, and are provided with integrated streak-like weakened zones (10, 11). The bag material is a polyethylene foil which is compatible with conditions prevalent in mines, and is self-adhering when wound around carrier beams. Also claimed is a method for installing such an explosion barrier.