Patent ID: 7329112

Claim:
A nozzle and drop tip assembly for an injection molding system for injection molding a plurality of molten materials into a mold cavity comprising: a nozzle with an outer surface; a drop tip operatively supported by said nozzle; a central bore extending through said nozzle and said drop tip and defining a gate in fluid communication with the mold cavity, said central bore adapted to operatively receive a valve member for movable operation therein; a first flow passage extending through said nozzle, so as to define a first nozzle flow passage, and through said drop tip, so as to define a first drop tip flow passage, wherein said first drop tip flow passage includes a plurality of first branching portions that each define a first junction at which said first flow passage communicates fluidly with said central bore; a second flow passage extending through said nozzle, so as to define a second nozzle flow passage, and through said drop tip, so as to define a second drop tip flow passage, wherein said second drop tip flow passage includes a plurality of second branching portions that each define a second junction at which said second flow passage communicates fluidly with said central bore; and wherein said first junctions are disposed at substantially equal distances from said gate relative to each other and said second junctions are disposed as substantially equal distances from said gate relative to each other but said first junctions are disposed at a different distance from said gate relative to said second junctions to enable molten material to flow independently from said first junctions and said second junctions.