An experimental study of the effect of mold surface roughness on in-process in-flow linear part shrinkage in injection molding has been carried out. The investigation is based on an experimental two-cavity tool, where the cavities have different surface topographies, but are otherwise identical. The study has been carried out for typical commercial polystyrene and polypropylene grades. The relationship between mold surface topography and linear shrinkage has been investigated with an experimental two-cavity mold producing simple rectangular parts with the nominal dimensions 1 x 25 x 50 mm (see figure 1). The cavities have different surface topographies on one side, but are otherwise identical (see discussion of other contribution factors).
|Title of host publication||ANTEC|
|Publication status||Published - 2003|
|Event||ANTEC 2003 Plastics: Annual Technical Conference - Nashville, TN, United States|
Duration: 4 May 2003 → 8 May 2003
|Conference||ANTEC 2003 Plastics|
|Period||04/05/2003 → 08/05/2003|