Customizable apparatus and method for transporting and depositing fluids

A method of delivering a High Internal Phase Emulsion to a substrate, the method comprising:

• (a) providing a rotating roll, wherein the rotary unit comprises a central longitudinal axis, wherein the rotating roll rotates about the central longitudinal axis;
• an exterior surface defining an interior region and substantially surrounding the central longitudinal axis;
• a vascular network configured for transporting the one or more fluids in a predetermined path from the interior region to the exterior surface of the rotating roll, the vascular network comprising a plurality of main arteries, a plurality of capillaries and a plurality of fluid exits on the exterior surface, wherein:
• each main artery comprises an inlet and is substantially parallel to the central longitudinal axis of the rotating roll, wherein the fluid enters the vascular network at the inlet;
• wherein the each capillary is attached to one of the main arteries and is in fluid communication with the one of the main arteries and at least one fluid exit through a substantially radial fluid path in a first tree expanding radially and three-dimensionally;
• (b) providing a High Internal Phase Emulsion to the rotating roll vascular network;
• (c) contacting a substrate with the rotating roll;
• and
• (d) contacting the substrate with the High Internal Phase Emulsion;
• either in any sequence of (a) then (b) followed by (c) before (d), or (d) before (c), or (d) and (c) simultaneously, provided that the substrate contacts the High Internal Phase Emulsion prior to the High Internal Phase Emulsion vertically protruding from the surface of the rotating roll at a height of greater than 0.1 mm.