Influence of molecular structure on secondary flow of polyolefin melts as investigated by laser-Doppler velocimetry

Dependence of the secondary flow of a lo

Dependence of the secondary flow of a low-density polyethylene on processing parameters as investigated by laser-Doppler velocimetry

✍ D. Hertel; H. Münstedt 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 461 KB

The flow of a low-density polyethylene (LDPE) in the entry regions of slit dies with various contraction ratios was studied experimentally for difference temperatures and throughputs. Laser-Doppler velocimetry was used to investigate the flow kinematics upstream of the contraction plane. For the LDP