Large deviations from the ideal gob shape and trajectory can have severe consequences on the penetration of the glass into the transfer equipment and moulds. Additionally, asymmetric loading of the gob into the blank moulds can cause uneven temperature and ware patterns on the mould interiors. In order to investigate how various feeder design and operating parameters affect gob shape and weight, a numerical study was performed. The numerical simulation modelled the formation of the gob at the feeder. In addition to "mesh-to-mesh" interpolation, mesh superposition, and remeshing techniques were used to allow a continuation of the calculations in spite of very sever mesh deformations. Of particular interest in this study were the effects feeder plunger motion and shape on gob properties.
