Cascading orifice mixer

An apparatus for mixing a viscoelastic material comprising:

• a plurality of generally cylindrical chambers connected in series, including a first chamber, at least one intermediate chamber and a last chamber, wherein each chamber is oriented such that the cylinder axis of the chamber is substantially orthogonal to the cylinder axis of the next adjacent chamber,
• each chamber comprising an orifice wherein said orifice provides direct fluid communication between adjacent chambers thereby defining a flow path from said first chamber through said at least one intermediate chamber to said last chamber,
• each chamber having a variable volume, said variable volume ranging from a minimum volume to a maximum volume, the plurality of chambers being adapted to transport the viscoelastic material along said flow path by transporting the viscoelastic material from a filled chamber containing a quantity of the viscoelastic material to a next adjacent empty chamber, the filled chamber and the next adjacent empty chamber each being at or near the maximum volume for the respective chamber, wherein the volume of the filled chamber is reduced to the minimum volume thereby forcing the viscoelastic material through the respective filled chamber orifice and into the next adjacent chamber.