A die for coextruding a plurality of fluid layers, comprising: a. a primary forming stem; b. one or more distribution plates (32a-32e), each of said plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said plates being in fluid communication with said primary forming stem and structured to deposit a layer of fluid onto said primary forming stem; and c. a microlayer assembly, comprising a microlayer forming stem, and a plurality of microlayer distribution plates (48a-48o), each of said microlayer plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said microlayer plates being in fluid communication with said microlayer forming stem and structured to deposit a microlayer of fluid onto said microlayer forming stem, said microlayer plates being arranged to provide a predetermined order in which the microlayers are deposited onto said microlayer forming stem to form a substantially unified, microlayered fluid mass on said microlayer forming stem, wherein, said microlayer forming stem is in fluid communication with said primary forming stem such that said microlayered fluid mass flows from said microlayer forming stem and onto said primary forming stem; characterized in that the fluid outlet of each of said distribution plates (32a-32e) has a thickness ranging from 0.508 mm to 2.54 mm (20 to 100 mils); wherein the fluid outlet of each of said microlayer distribution plates (48a-48o) has a thickness ranging from 0.0254 mm to 0.508 mm (1 to 20 mils); and wherein the ratio between the thickness of the fluid outlet of the microlayer distribution plates (48a-48o) and the thickness of the fluid outlet of the distribution plates (32a-32e) ranges from 1:1.1 to 1:8. a. a primary forming stem; b. one or more distribution plates (32a-32e), each of said plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said plates being in fluid communication with said primary forming stem and structured to deposit a layer of fluid onto said primary forming stem; and c. a microlayer assembly, comprising a microlayer forming stem, and a plurality of microlayer distribution plates (48a-48o), each of said microlayer plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said microlayer plates being in fluid communication with said microlayer forming stem and structured to deposit a microlayer of fluid onto said microlayer forming stem, said microlayer plates being arranged to provide a predetermined order in which the microlayers are deposited onto said microlayer forming stem to form a substantially unified, microlayered fluid mass on said microlayer forming stem, wherein, said microlayer forming stem is in fluid communication with said primary forming stem such that said microlayered fluid mass flows from said microlayer forming stem and onto said primary forming stem; characterized in that the fluid outlet of each of said distribution plates (32a-32e) has a thickness ranging from 0.508 mm to 2.54 mm (20 to 100 mils); wherein the fluid outlet of each of said microlayer distribution plates (48a-48o) has a thickness ranging from 0.0254 mm to 0.508 mm (1 to 20 mils); and wherein the ratio between the thickness of the fluid outlet of the microlayer distribution plates (48a-48o) and the thickness of the fluid outlet of the distribution plates (32a-32e) ranges from 1:1.1 to 1:8. a microlayer forming stem, and a plurality of microlayer distribution plates (48a-48o), each of said microlayer plates having a fluid inlet and a fluid outlet, the fluid outlet from each of said microlayer plates being in fluid communication with said microlayer forming stem and structured to deposit a microlayer of fluid onto said microlayer forming stem, said microlayer plates being arranged to provide a predetermined order in which the microlayers are deposited onto said microlayer forming stem to form a substantially unified, microlayered fluid mass on said microlayer forming stem, wherein, said microlayer forming stem is in fluid communication with said primary forming stem such that said microlayered fluid mass flows from said microlayer forming stem and onto said primary forming stem; characterized in that the fluid outlet of each of said distribution plates (32a-32e) has a thickness ranging from 0.508 mm to 2.54 mm (20 to 100 mils); wherein the fluid outlet of each of said microlayer distribution plates (48a-48o) has a thickness ranging from 0.0254 mm to 0.508 mm (1 to 20 mils); and wherein the ratio between the thickness of the fluid outlet of the microlayer distribution plates (48a-48o) and the thickness of the fluid outlet of the distribution plates (32a-32e) ranges from 1:1.1 to 1:8.