Methods and apparatus for recycling asphalt shingle material into composite board products

摘要

Used and manufacturing scrap asphalt shingle material is processed into a relatively coarse material comprising pieces or flakes of a maximum predetermined size. The flakes are finish processed into a composite board product in a method that includes(i) mixing the flakes with a relatively high percentage content of solvent suffused fiber,(ii) grinding and heating the flakes and fiber to form a homogenous semi-liquid mixture,(iii) extruding and conveying the homogenous mixture to a board forming station, and(iv) compressing the mixture into the composite board product.