Inventors:
Raymond C. Swann - Kansas City MO, US
Klaus Friedrich Gleich - Highlands Ranch CO, US
Walter Alexander Johnson - Centennial CO, US
Michael John Block - Centennial CO, US
John VanNice - Lenexa KS, US
Assignee:
Johns Manville - Denver CO
International Classification:
C08L 95/00, C08L 31/02
US Classification:
1062811, 366 89, 524 69, 524 59, 524 70
Abstract:
Provided is a method of mixing a modified bitumen composition and feeding one or more polymeric materials to an extruder, together with asphalt fed at more than one location along a length of the extruder. Improved mixing and elimination of asphalt melting in the production of rolled goods and other products is improved.