Blenders are used in shingle production for controlled application of mixed colored granules in a precise pattern to the upper surface of the coated sheet. This precision application of granules is what gives each manufactures shingle a unique look.
The blender plays a direct role in the color pattern and appearance of the finished shingles. Instead of dropping one uniform curtain of granules, the system delivers colored granules through multiple, defined drop locations, which allows manufacturers to place color in targeted areas of the sheet. Each drop point consists of two partitioned zones that can be switched between for color changes. This allows for the ability to change product color during production with minimal down time. In practice, this is how plants create and maintain repeatable surface color zones and visual effects across the shingle width.
Reichel & Drews blenders are designed to support a steady, controlled flow of properly conditioned granules throughout production, helping maintain predictable surfacing behavior over long runs and through changeovers.
