Anisotropy Development During Processing

The mechanical properties and dimensional stability of a molded polymer part are strongly dependent upon the anisotropy of the finished part1. The structure of the final part, in turn, is influenced by the design of the mold cavity, e. g., the type and position of the gate, and by the various processing conditions, such as injection speed, melt or compound temperatures, mold cooling or heating rates, and others. The amount and type of filler or reinforcing material also has a great influence on the quality of the final part.