A melt conveyor, particularly a melt distributor or melt mixer, for an extrusion tool of an extrusion system, comprising a melt conveyor block with a multi-channel system, wherein the multi-channel system is arranged so as to extend three-dimensionally within the melt conveyor block and has at least one inlet and at least one outlet for polymer melt, wherein a plurality of branches arranged one after the other and a plurality of generations (9a, 9b, 9c) of further branches are formed over multiple generations (12a, 12b) of distributed melt channels (11a, 11b) between an inlet and an outlet fluidly connected to the inlet, wherein m melt channels of a-th generation having x-th local cross sections and n melt channels of b-th generation having y-th local cross sections are provided, wherein n>m, if b>a, wherein the y-th local cross sections of the melt channels of the b-th generation are smaller than the x-th local cross sections of the melt channels of the a-th generation, and wherein the melt channels of a-th generation are oriented toward the inlet and the melt channels of b-th generation are oriented toward the outlet in the designated flow direction of the polymer melt so that the melt conveyor serves as a melt distributor for a designated melt flow of the polymer melt, or the melt channels of a-th generation are oriented toward the outlet and the melt channels of b-th generation are oriented toward the inlet in the designated flow direction of the polymer melt so that the melt conveyor serves as a melt mixer for a designated melt flow of the polymer melt, characterized in that a circumference (U 2) and a cross-sectional area (A 2) of at least two melt channels originating and split from a common melt channel are dimensioned subject to U 1 x A 1 x + 1 = 1 n K ∗ U 2 x A 2 x + 1 wherein U 1 is the first circumference and A 1 is the first cross-sectional area of the common melt channel, wherein U 2 is the second circumference and A 2 is the second cross-sectional area of one of the split melt channels, wherein n K is the total number of split melt channels, and wherein x is greater than or equal to -0.5, preferably is at least a value of 0.5, preferentially at least a value of 0.75, and wherein x is at most a value of 4, preferentially at most a value of 2.5, further preferentially at the most a value of 1.5 comprising a melt conveyor block with a multi-channel system, wherein the multi-channel system is arranged so as to extend three-dimensionally within the melt conveyor block and has at least one inlet and at least one outlet for polymer melt, wherein a plurality of branches arranged one after the other and a plurality of generations (9a, 9b, 9c) of further branches are formed over multiple generations (12a, 12b) of distributed melt channels (11a, 11b) between an inlet and an outlet fluidly connected to the inlet, wherein m melt channels of a-th generation having x-th local cross sections and n melt channels of b-th generation having y-th local cross sections are provided, wherein n>m, if b>a, wherein the y-th local cross sections of the melt channels of the b-th generation are smaller than the x-th local cross sections of the melt channels of the a-th generation, and wherein the melt channels of a-th generation are oriented toward the inlet and the melt channels of b-th generation are oriented toward the outlet in the designated flow direction of the polymer melt so that the melt conveyor serves as a melt distributor for a designated melt flow of the polymer melt, or the melt channels of a-th generation are oriented toward the outlet and the melt channels of b-th generation are oriented toward the inlet in the designated flow direction of the polymer melt so that the melt conveyor serves as a melt mixer for a designated melt flow of the polymer melt, characterized in that a circumference (U 2) and a cross-sectional area (A 2) of at least two melt channels originating and split from a common melt channel are dimensioned subject to U 1 x A 1 x + 1 = 1 n K ∗ U 2 x A 2 x + 1 wherein U 1 is the first circumference and A 1 is the first cross-sectional area of the common melt channel, wherein U 2 is the second circumference and A 2 is the second cross-sectional area of one of the split melt channels, wherein n K is the total number of split melt channels, and wherein x is greater than or equal to -0.5, preferably is at least a value of 0.5, preferentially at least a value of 0.75, and wherein x is at most a value of 4, preferentially at most a value of 2.5, further preferentially at the most a value of 1.5