Rheological effect in film blowing

Abstract

Modeling film blowing process -- Rheological properties and their effects of on film process and film properties -- Birefringence measurements -- Apparatus and materials -- Rheological measurements -- Measurement of densities of molten polymers -- Measurement of temperature profile -- Measurement of strain rate -- On-line birefringence measurement -- Determination of stresses -- Biaxial elongational viscosity -- Bubble stabilities -- Results of rheological behavior Results temperature profile -- Results of strain rates -- Birefringence results -- Machine and transverse stresses -- Biaxial elongational viscosity -- Results of bubble stabilities -- Relationship between polymer processability and its rheological behavior.