Injection molding of nano-features - A study on filling and birefringence Conference Paper uri icon


  • The ability of the polymer melt to enter into the micro- or nano-structures is a crucial factor for successful molding operations and their final usability. When molding a rectangular plate with nano-features on top of it, it was observed that the nano-features are filled completely, away from the fan gate and only partially filled near the gate. A fundamental understanding based hypothesis driven approach helps to understand and solve the non-uniform filling behavior and leverage existing commercial modeling tools effectively. Based on the hypothesis, recommendations were made for further experimental studies, which showed a significant improvement in the filling of the nano-features completely throughout the part. Further studies focused on reducing the non-uniform birefringence by optimizing the gate design, using Moldflow and Abaqus.

published proceedings

  • Annual Technical Conference - ANTEC, Conference Proceedings

author list (cited authors)

  • Vaddiraju, S., Vasudeo, N., Cadotte, J., & Rammohan, A.

complete list of authors

  • Vaddiraju, S||Vasudeo, N||Cadotte, J||Rammohan, A

publication date

  • January 2015