K Show Report: Micromolding at its smallest

It’s day one at the K Show, and Boy is laying early claim to what may be the smallest part ever injection molded. The company is using a Boy 12 A, 129 kN machine with a two-cavity mold to produce miniature toothed wheels weighing 0.0009 g. A plasticating unit with a 12 mm diameter precisely reproduces dosing of extremely small injection volumes down to 0.09 cubic centimeters. A shot size of 0.0985 g is used to produce the part. Dwell time of the material in the plasticating unit is reduced by 50% compared to a 14 mm plasticating unit, resulting in less thermal stress in the material.