Systems and methods for liquid dosing of material in a blender system

A method of liquid dosing in a blender system comprising the steps of:

• providing one or more individual metering devices, each metering device comprising an individual material hopper for containing a granular polymer material ingredient to be blended;
• a starve-fed mixing chamber operably coupled to the metering devices, the starve-fed mixing chamber configured to receive the granular material ingredients from each metering device and mix the ingredients, wherein the starve-fed mixing chamber is a gravimetric mixing chamber that operates on a basis where the ingredients to freely fall through and out of the starve-fed mixing chamber by gravity and do not accumulate in the starve-fed mixing chamber;
• and a liquid ingredient dosing device disposed within the starve-fed mixing chamber for injecting a liquid ingredient into the path of the granular material ingredients as they fall through or out of the starve-fed mixing chamber;
• introducing granular material ingredients into the starve-fed mixing chamber via at least one metering device;
• and
• liquid dosing the granular material ingredients with a liquid additive as the granular material ingredients pass through or out of the mixing chamber.